1. A double-cylinder oil production device of a direct current electromagnetic pump for underground use comprises an oil storage tube body and is characterized in that, the oil storage pipe body is connected with a left mounting pipe body and a right mounting pipe body, a left electromagnetic coil is arranged at the bottom of the left mounting pipe body, a left static magnet is arranged in the center of the left electromagnetic coil, a left movable component is arranged right above the left static magnet, the left movable component comprises a left moving magnet and a left plunger structure, the left moving magnet is arranged right above the left static magnet, the left plunger structure is fixed on the top of the left moving magnet, the left plunger structure divides the left mounting tube body into an upper left compression cavity at the upper part and a lower left compression cavity at the lower part, a first liquid outlet one-way valve communicated with the upper left compression cavity is arranged at the top of the left mounting pipe body, and a first liquid inlet one-way valve communicated with the upper left compression cavity is arranged at the side part of the left mounting pipe body;

a right electromagnetic coil is arranged at the bottom of the right installation pipe body, a right static magnet is arranged in the center of the right electromagnetic coil, a right movable assembly is arranged right above the right static magnet and comprises a right movable magnet and a right plunger structure, the right movable magnet is arranged right above the right static magnet, the right plunger structure is fixed at the top of the right movable magnet and divides the right installation pipe body into an upper right compression cavity at the upper part and a lower right compression cavity at the lower part, a second liquid outlet one-way valve communicated with the upper right compression cavity is arranged at the top of the right installation pipe body, and a second liquid inlet one-way valve communicated with the upper right compression cavity is arranged at the side part of the right installation pipe body;

an opening is formed between the left mounting pipe body and the right mounting pipe body, the opening is communicated with the left lower compression cavity and the right lower compression cavity, the left electromagnetic coil is used for driving the left moving magnet to move towards the left static magnet after being electrified, and the right electromagnetic coil is used for driving the right moving magnet to move towards the right static magnet after being electrified.

2. The direct current electromagnetic pump dual cylinder production apparatus for underground use of claim 1, wherein the left plunger structure comprises:

the left connecting column is arranged at the top of the left moving magnet; and

the left plunger head is arranged at the top of the left connecting column; wherein the content of the first and second substances,

the left plunger head divides the mounting tube body into an upper left compression chamber and a lower left compression chamber.

3. The direct current electromagnetic pump dual cylinder production unit for subterranean use of claim 2, wherein said right plunger structure comprises:

the right connecting column is arranged at the top of the right moving magnet; and

the right plunger head is arranged at the top of the right connecting column; wherein the content of the first and second substances,

the right plunger head divides the mounting tube body into an upper right compression chamber and a lower right compression chamber.

4. The underground direct current electromagnetic pump double-cylinder oil production device according to claim 3, wherein the inner wall of the left mounting pipe body is provided with a left upper limit buffer and a left lower limit buffer, the left upper limit buffer is positioned above the left plunger head, and the left lower limit buffer is positioned below the left plunger head.

5. The underground direct current electromagnetic pump double-cylinder oil production device according to claim 3, wherein a right upper limit buffer and a right lower limit buffer are arranged on the inner wall of the right installation pipe body, the right upper limit buffer is positioned above the right plunger head, and the right lower limit buffer is positioned below the right plunger head.

6. The underground direct current electromagnetic pump double-cylinder oil production device according to any one of claims 1 to 5, characterized in that a left mounting rack is connected to the left electromagnetic coil, and the left mounting rack is arranged on the inner wall of the left lower compression cavity.

7. The underground direct current electromagnetic pump double-cylinder oil production device according to any one of claims 1 to 5, characterized in that a right mounting rack is connected to the right electromagnetic coil, and the right mounting rack is arranged on the inner wall of the right lower compression cavity.

8. The underground direct current electromagnetic pump double cylinder oil production device according to any one of claims 1 to 5, wherein the left and right mounting pipes are provided with guides at the bottom.

Background

Oil extraction refers to the act of excavating and extracting oil in places where oil is stored. The current oil recovery mode mostly erects large-scale beam-pumping unit on ground, oil reservoir pump that connects several kilometers in the underground through long heavy sucker rod carries out oil recovery, because beam-pumping unit equipment fixing is on ground, the size is big, take up an area of much, in addition link the sucker rod of several kilometers in the underground deep oil reservoir pump, long-term and oil pipe wall friction in the operation process, collision even, if not in time maintain just cause accidents such as oil pipe damage oil gas leakage, and beam-pumping unit equipment is heavy to reach dozens of tons, mechanical efficiency is low, the loss is high, need great driving motor and power, every well must erect high voltage power supply circuit, set up facilities such as transformer. With the development and progress of society, the national requirements on environmental protection are higher and higher, the oil extraction mode obviously has a plurality of defects, firstly, the large-scale oil pumping unit has a complex and heavy structure, a plurality of unsafe factors exist in the operation process, accidents such as hurting people by the oil pumping unit often occur, secondly, a large amount of friction loss of a sucker rod and an oil pipe wall, a polished rod and a packing, a walking beam, a gearbox and the like and unbalance of a balance weight and the like cause extremely low mechanical efficiency in the operation process of the oil pumping unit, waste of driving energy is brought, the crude oil recovery ratio is lower, the requirements cannot be met, and finally, the operation process has larger noise pollution accompanied with leakage of inflammable and explosive harmful gases and the like, which are serious challenges for the civilized development of the current society.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an underground direct current electromagnetic pump double-cylinder oil production device, which adopts a direct current electromagnetic coil and an electromagnet as driving devices, is respectively provided with a left group of driving devices and a right group of driving devices with U-shaped structures, and the two groups of driving devices are alternately electrified and run in a reciprocating manner to achieve the aim of oil production.

A double-cylinder oil production device of a direct current electromagnetic pump for underground use comprises an oil storage pipe body, wherein the oil storage pipe body is connected with a left mounting pipe body and a right mounting pipe body, the bottom of the left mounting pipe body is provided with a left electromagnetic coil, the center of the left electromagnetic coil is provided with a left static magnet, a left movable component is arranged right above the left static magnet and comprises a left movable magnet and a left plunger piston structure, the left moving magnet is arranged right above the left static magnet, the left plunger structure is fixed at the top of the left moving magnet, the left plunger structure divides the left mounting tube body into an upper left compression cavity at the upper part and a lower left compression cavity at the lower part, a first liquid outlet one-way valve communicated with the upper left compression cavity is arranged at the top of the left mounting pipe body, and a first liquid inlet one-way valve communicated with the upper left compression cavity is arranged at the side part of the left mounting pipe body; a right electromagnetic coil is arranged at the bottom of the right installation pipe body, a right static magnet is arranged in the center of the right electromagnetic coil, a right movable assembly is arranged right above the right static magnet and comprises a right movable magnet and a right plunger structure, the right movable magnet is arranged right above the right static magnet, the right plunger structure is fixed at the top of the right movable magnet and divides the right installation pipe body into an upper right compression cavity at the upper part and a lower right compression cavity at the lower part, a second liquid outlet one-way valve communicated with the upper right compression cavity is arranged at the top of the right installation pipe body, and a second liquid inlet one-way valve communicated with the upper right compression cavity is arranged at the side part of the right installation pipe body; an opening is formed between the left mounting pipe body and the right mounting pipe body, the opening is communicated with the left lower compression cavity and the right lower compression cavity, the left electromagnetic coil is used for driving the left moving magnet to move towards the left static magnet after being electrified, and the right electromagnetic coil is used for driving the right moving magnet to move towards the right static magnet after being electrified. The left electromagnetic coil and the right electromagnetic coil are respectively and electrically connected with different direct current power supplies, and the left electromagnetic coil and the right electromagnetic coil are not in an open state at the same time; insulating liquid substances are arranged inside the left lower compression cavity and the right lower compression cavity.

Preferably, the left plunger structure comprises: the left connecting column is arranged at the top of the left moving magnet; and a left plunger head arranged at the top of the left connecting column; wherein the left plunger head divides the mounting tube body into an upper left compression chamber and a lower left compression chamber. Left spliced pole one end is connected and is moved magnet on a left side, and left plunger head is connected to the other end, and left plunger head external diameter equals with left installation body internal diameter to install the body with a left side and separate for upper left compression chamber and left lower compression chamber.

Preferably, the right plunger structure comprises: the right connecting column is arranged at the top of the right moving magnet; and a right plunger head arranged at the top of the right connecting column; wherein the right plunger head divides the mounting tube body into the upper right compression chamber and the lower right compression chamber. Similarly, the right moving magnet is connected to right spliced pole one end, and right plunger head is connected to the other end, and right plunger head external diameter equals with right installation body internal diameter to install the body with the right side and separate for upper right compression chamber and right compression chamber down.

Preferably, a left upper limit buffer and a left lower limit buffer are arranged on the inner wall of the left mounting pipe body, the left upper limit buffer is located above the left plunger head, and the left lower limit buffer is located below the left plunger head. The upper left limit buffer and the lower left limit buffer are both arranged through elastic materials, and the inner wall of the left installation pipe body is arranged, so that the upper left limit buffer can abut against the upper surface of the plunger head, the lower left limit buffer can abut against the lower surface of the plunger head, and the whole plunger head is prevented from continuously moving upwards or downwards from the upper limit buffer and the lower limit buffer.

Preferably, the inner wall of the right mounting pipe body is provided with a right upper limit buffer and a right lower limit buffer, the right upper limit buffer is located above the right plunger head, and the right lower limit buffer is located below the right plunger head. Similarly, the upper right limit buffer and the lower right limit buffer are both arranged through elastic materials, and the upper right limit buffer and the lower right limit buffer are arranged on the inner wall of the right mounting pipe body, so that the upper right limit buffer can abut against the upper surface of the plunger head, and the lower right limit buffer can abut against the lower surface of the plunger head, and the whole plunger head is prevented from continuously moving upwards or downwards from the upper limit buffer and the lower limit buffer.

Preferably, left solenoid is connected with left mounting bracket, left mounting bracket sets up left side compression chamber inner wall down. The structural reliability of the oil extraction device can be improved due to the arrangement of the left mounting frame.

Preferably, the right electromagnetic coil is connected with a right mounting rack, and the right mounting rack is arranged on the inner wall of the right lower compression cavity. Similarly, the right mounting frame can improve the structural reliability of the oil extraction device.

Preferably, the bottom of the left mounting tube body and the bottom of the right mounting tube body are provided with a guider. Through the arrangement of the guider, the oil extraction device can move underground more reliably; it is also necessary that the left mounting pipe body and the right mounting pipe body are equally divided into two parts, and the two parts are connected into a whole by the assembling joints, so that the production and the use are facilitated, and at the same time, the left mounting pipe body, the right mounting pipe body and the oil storage pipe body are also connected into a whole by the assembling joints.

The invention has the beneficial effects that:

in the invention, the whole oil extraction device is arranged in underground crude oil, before oil extraction operation, because a left lower compression cavity and a right lower compression cavity are mutually communicated through an opening, under the condition of equal external pressure, a left plunger piston structure and a right plunger piston structure tend to be equal in height, when oil extraction operation is carried out, a left electromagnetic coil is electrified and a right electromagnetic coil is powered off, an electromagnetic field is formed around the left electromagnetic coil, so that a left moving magnet and a left static magnet are mutually attracted, because the left static magnet is fixed and the left moving magnet is not fixed, the left moving magnet moves towards the left static magnet, the left moving magnet drives the left plunger piston structure to move downwards, the volume of an upper left compression cavity is increased, at the moment, a first liquid inlet one-way valve is opened, and a first liquid outlet one-way valve is closed, so that external crude oil is sucked into the upper left compression cavity from the first liquid inlet one-way valve, and simultaneously, the left plunger piston structure moves downwards, the volume of the left lower compression cavity is reduced, so that insulating liquid substances in the left lower compression cavity enter the right lower compression cavity from the opening, the volume of the right lower compression cavity is increased, the right plunger piston structure is lifted, the volume of the right upper compression cavity is reduced, the second liquid inlet one-way valve is closed, the second liquid outlet one-way valve is opened, and crude oil sucked in the right upper compression cavity is discharged from the second liquid outlet one-way valve and enters the oil storage tube body; after a preset time period, the left electromagnetic coil is powered off and the right electromagnetic coil is powered on, similarly, an electromagnetic field is formed around the right electromagnetic coil, so that the right moving magnet and the right static magnet are mutually attracted, the right static magnet is fixed and the right moving magnet is not fixed, so that the right moving magnet moves towards the right static magnet, the right moving magnet drives the right plunger structure to move downwards, the volume of an upper right compression cavity is increased, at the moment, the second liquid inlet one-way valve is opened, the second liquid outlet one-way valve is closed, so that external crude oil is sucked into the upper right compression cavity from the second liquid inlet one-way valve, meanwhile, the volume of a lower right compression cavity is reduced due to the downward movement of the right plunger structure, so that insulating liquid substances in the lower right compression cavity enter the lower left compression cavity from the opening, the volume of the lower left compression cavity is increased, so that the left plunger structure is lifted, and the volume of the upper left compression cavity is reduced, at the moment, the first liquid inlet one-way valve is closed and the first liquid outlet one-way valve is opened, so that crude oil sucked in the upper left compression cavity is discharged from the first liquid outlet one-way valve and enters the oil storage pipe body, after a preset time period, the right electromagnetic coil is continuously powered off and the left electromagnetic coil is powered on, so that the circulating operation is realized, the whole oil production device adopts the direct current electromagnetic coil and the electromagnet as driving devices, the left and right driving devices with U-shaped structures are respectively arranged, the two groups of driving devices are powered on alternately and run in a reciprocating mode, so that the oil production purpose is realized, the device does not need to arrange large-scale oil production equipment on the ground and erect a high-voltage power grid, does not need a high-power driving motor, omits a long sucker rod, meets the environmental requirements of the ground, can transmit a long-distance direct current power supply, saves energy, reduces loss, can uninterruptedly perform oil production operation on the whole oil production device, and realizes safe, environment-friendly and stable crude oil collection and transmission, the recovery efficiency of crude oil is improved.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a perspective view of the left solenoid coil of the present invention after it has been energized;

FIG. 2 is a perspective view of the right solenoid coil of the present invention after it has been energized.

Reference numerals:

1-oil storage tube body, 2-left installation tube body, 21-left electromagnetic coil, 211-left installation frame, 22-left static magnet, 23-left moving magnet, 24-left plunger structure, 241-left connection column, 242-left plunger head, 25-left upper compression chamber, 26-left lower compression chamber, 27-first liquid outlet one-way valve, 28-first liquid inlet one-way valve, 29-left upper limit buffer, 210-left lower limit buffer, 3-right installation tube body, 31-right electromagnetic coil, 311-right installation frame, 32-right static magnet, 33-right moving magnet, 34-right plunger structure, 341-right connection column, 342-right plunger head, 35-right upper compression chamber, 36-right lower compression chamber, 37-second liquid outlet one-way valve, 38-second inlet check valve, 39-upper right buffer, 310-lower right buffer, 4-opening, 5-insulating liquid substance, 6-guider, 7-assembling joint.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operated, and thus, cannot be construed as limiting the present invention.

As shown in fig. 1 and 2, a double-cylinder oil production device of a direct current electromagnetic pump for underground use comprises an oil storage tube body 1, wherein the oil storage tube body 1 is connected with a left installation tube body 2 and a right installation tube body 3, a left electromagnetic coil 21 is arranged at the bottom of the left installation tube body 2, a left static magnet 22 is arranged in the center of the left electromagnetic coil 21, a left movable component is arranged right above the left static magnet 22 and comprises a left movable magnet 23 and a left plunger structure 24, the left movable magnet 23 is arranged right above the left static magnet 22, the left plunger structure 24 is fixed at the top of the left movable magnet 23, the left plunger structure 24 divides the left installation tube body 2 into an upper left compression cavity 25 at the upper part and a lower left compression cavity 26 at the lower part, a first liquid outlet one-way valve 27 communicated with the upper left compression cavity 25 is arranged at the top of the left installation tube body 2, and a first liquid inlet one-way valve 28 communicated with the upper left compression cavity 25 is arranged at the side of the left installation tube body 2; the bottom of the right mounting pipe body 3 is provided with a right electromagnetic coil 31, the center of the right electromagnetic coil 31 is provided with a right static magnet 32, a right movable component is arranged right above the right static magnet 32 and comprises a right movable magnet 33 and a right plunger structure 34, the right movable magnet 33 is arranged right above the right static magnet 32, the right plunger structure 34 is fixed at the top of the right movable magnet 33, the right plunger structure 34 divides the right mounting pipe body 3 into an upper right compression cavity 35 at the upper part and a lower right compression cavity 36 at the lower part, the top of the right mounting pipe body 3 is provided with a second liquid outlet one-way valve 37 communicated with the upper right compression cavity 35, and the side of the right mounting pipe body 3 is provided with a second liquid inlet one-way valve 38 communicated with the upper right compression cavity 35; an opening 4 is arranged between the left mounting tube body 2 and the right mounting tube body 3, the opening 4 is communicated with the left lower compression cavity 26 and the right lower compression cavity, the left electromagnetic coil 21 is used for driving the left moving magnet 23 to move towards the left static magnet 22 after being electrified, and the right electromagnetic coil 31 is used for driving the right moving magnet 33 to move towards the right static magnet 32 after being electrified.

In the present embodiment, different dc power supplies are electrically connected to the left electromagnetic coil 21 and the right electromagnetic coil 31, respectively, and the left electromagnetic coil 21 and the right electromagnetic coil 31 are not in the on state at the same time; the lower left compression chamber 26 and the lower right compression chamber 36 are internally provided with an insulating liquid substance 5. The whole oil extraction device is arranged in underground crude oil, before oil extraction operation, because the left lower compression cavity 26 and the right lower compression cavity 36 are mutually communicated through the opening 4, under the condition that the external pressure is equal, the left plunger structure 24 and the right plunger structure 34 tend to be equal in height, when the oil extraction operation is carried out, the left electromagnetic coil 21 is electrified, the right electromagnetic coil 31 is powered off, an electromagnetic field is formed around the left electromagnetic coil 21, so that the left moving magnet 23 and the left static magnet 22 are mutually attracted, because the left static magnet 22 is fixed and the left moving magnet 23 is not fixed, the left moving magnet 23 moves towards the left static magnet 22, so that the left moving magnet 23 drives the left plunger structure 24 to move downwards, the volume of the left upper compression cavity 25 is increased, at the moment, the first liquid inlet one-way valve 28 is opened, and the first liquid outlet one-way valve 27 is closed, so that the external crude oil is sucked into the left upper compression cavity 25 from the first liquid inlet one-way valve 28, meanwhile, as the left plunger structure 24 moves downwards, the volume of the left lower compression cavity 26 is reduced, so that the insulating liquid substance 5 in the left lower compression cavity 26 enters the right lower compression cavity 36 from the opening 4, the volume of the right lower compression cavity 36 is increased, the right plunger structure 34 is lifted, the volume of the right upper compression cavity 35 is reduced, at the moment, the second liquid inlet one-way valve 38 is closed, and the second liquid outlet one-way valve 37 is opened, so that the crude oil sucked in the right upper compression cavity 35 is discharged from the second liquid outlet one-way valve 37 and enters the oil storage tube body 1; after a preset time period, the left electromagnetic coil 21 is de-energized and the right electromagnetic coil 31 is energized, and similarly, an electromagnetic field is formed around the right electromagnetic coil 31, so that the right moving magnet 33 and the right static magnet 32 attract each other, because the right static magnet 32 is fixed and the right moving magnet 33 is not fixed, the right moving magnet 33 moves towards the right static magnet 32, so that the right moving magnet 33 drives the right plunger structure 34 to move downwards, so that the volume of the upper right compression cavity 35 is increased, at this time, the second liquid inlet check valve 38 is opened, and the second liquid outlet check valve 37 is closed, so that the external crude oil is sucked into the upper left compression cavity 25 from the first liquid inlet check valve 28, and simultaneously, because the right plunger structure 34 moves downwards, the volume of the lower right compression cavity 36 is reduced, so that the insulating liquid substance 5 in the lower right compression cavity 36 enters the lower left compression cavity 26 from the opening 4, so that the volume of the lower left compression cavity 26 is increased, therefore, the left plunger structure 24 is lifted, the volume of the upper left compression cavity 25 is reduced, the first liquid inlet one-way valve 28 is closed and the first liquid outlet one-way valve 27 is opened at the moment, crude oil sucked in the upper left compression cavity 25 is discharged from the first liquid outlet one-way valve 27 and enters the oil storage tube body 1, the right electromagnetic coil 31 is continuously powered off and the left electromagnetic coil 21 is powered on after a preset time period, circulation operation is achieved, the whole oil extraction device can carry out oil extraction operation uninterruptedly by alternately powering on the left electromagnetic coil 21 and the right electromagnetic coil 31, crude oil is collected and conveyed stably, and crude oil recovery efficiency is improved.

In particular, it should be noted that the whole double-cylinder oil extraction device has the characteristics of long-distance direct-current power transmission, economy, practicality, cleanness and easy control and conversion, thereby reducing energy loss, simultaneously making the structure of the whole oil extraction device more compact, convenient control and prolonging service life.

Specifically, the left plunger structure 24 includes: a left connecting column 241 arranged at the top of the left moving magnet 23; and a left plunger head 242 disposed at the top of the left connecting post 241; wherein the left plunger head 242 divides the mounting tube into an upper left compression chamber 25 and a lower left compression chamber 26.

In the present embodiment, the left connecting column 241 has one end connected to the left moving magnet 23 and the other end connected to the left plunger head 242, and the left plunger head 242 has an outer diameter equal to the inner diameter of the left mounting tube 2, thereby dividing the left mounting tube 2 into the upper left compression chamber 25 and the lower left compression chamber 26.

Specifically, the right plunger structure 34 includes: a right connection post 341 provided on the top of the right moving magnet 33; and a right plunger head 342 provided on the top of the right connecting post 341; wherein the right plunger head 342 divides the mounting tube into an upper right compression chamber 35 and a lower right compression chamber 36.

In the present embodiment, similarly, the right connecting column 341 has one end connected to the right moving magnet 33 and the other end connected to the right plunger head 342, and the right plunger head 342 has an outer diameter equal to the inner diameter of the right mounting tube 3 to divide the right mounting tube 3 into the upper right compression chamber 35 and the lower right compression chamber 36.

Specifically, the inner wall of left mounting pipe body 2 is provided with left upper limit bumper 29 and left lower limit bumper 210, and left upper limit bumper 29 is located above left plunger head 242, and left lower limit bumper 210 is located below left plunger head 242.

In this embodiment, the upper left limit buffer 29 and the lower left limit buffer 210 are both made of an elastic material and are disposed on the inner wall of the left mounting tube 2, so that the upper left limit buffer 29 can abut against the upper surface of the plunger head, and the lower left limit buffer 210 can abut against the lower surface of the plunger head, thereby preventing the entire plunger head from moving up or down from the upper limit buffer and the lower limit buffer.

Specifically, the right mounting pipe body 3 is provided on the inner wall thereof with a right upper limit bumper 39 and a right lower limit bumper 310, the right upper limit bumper 39 being located above the right plunger head 342, and the right lower limit bumper 310 being located below the right plunger head 342.

In the present embodiment, similarly, the upper right limit bumper 39 and the lower right limit bumper 310 are both made of an elastic material and are disposed on the inner wall of the right mounting tube 3, so that the upper right limit bumper 39 can abut against the upper surface of the plunger head and the lower right limit bumper 310 can abut against the lower surface of the plunger head, thereby preventing the entire plunger head from moving up or down from the upper limit bumper and the lower limit bumper.

Specifically, the left electromagnetic coil 21 is connected with a left mounting bracket 211, and the left mounting bracket 211 is disposed on the inner wall of the lower left compression chamber 26.

In the present embodiment, the installation of the left mount 211 can improve the structural reliability of the oil recovery device.

Specifically, the right solenoid coil 31 is connected with a right mounting bracket 311, and the right mounting bracket 311 is disposed on the inner wall of the right lower compression chamber 36.

In the present embodiment, similarly, the installation of the right mount bracket 311 can improve the structural reliability of the oil recovery device.

Specifically, the bottom of the left mounting pipe body and the bottom of the right mounting pipe body are provided with a guider.

In the present embodiment, it should be noted that the oil recovery device can be moved more reliably in the ground by the installation of the guide.

It is also necessary that the left mounting pipe body and the right mounting pipe body are equally divided into two parts, and the two parts are connected into a whole by the assembling joints, so that the production and the use are facilitated, and at the same time, the left mounting pipe body, the right mounting pipe body and the oil storage pipe body are also connected into a whole by the assembling joints.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.