1. The utility model provides a ball buffer gear of shuttle valve, includes valve body (1), first opening (2) have been seted up at the middle part on valve body (1) right side, second opening (3) have been seted up at the left middle part of valve body (1), discharge gate (4) have been seted up at the middle part of valve body (1) upper end, ball (5) have been placed in the middle part activity of valve body (1) inner chamber, the inner chamber fixed mounting of valve body (1) has and is located first opening (2) and second opening (3) inboard sealing washer (6), its characterized in that: the inner chamber movable mounting of valve body (1) has rolling disc (7) that is located first opening (2) and second opening (3) outside, the middle part of rolling disc (7) is the blade form of certain angle distortion, and the blade form is located the middle part of first opening (2) and second opening (3), the inner chamber activity of valve body (1) has been cup jointed and is located movable block (8) in the rolling disc (7) outside, the middle part of movable block (8) and valve body (1) inner chamber pass through first spring (9) swing joint, stay cord (10) swing joint is passed through in the inboard of movable block (8) and the outside of rolling disc (7), the inner chamber fixed mounting of ball (5) has fixed block (11), and fixed block (11) encircle the central point of ball (5) and the equiangular arrangement, movable block (8) and fixed block (11) are magnetic material and make, and the magnetic pole at the inner side of the first spring (9) is different from the magnetic pole at the outer side of the fixed block (11).

2. A ball cushion mechanism of a shuttle valve as claimed in claim 1, wherein: the middle part activity of valve body (1) inner chamber is cup jointed and is located buffer rod (12) at first opening (2) and second opening (3) middle part, and the inboard of buffer rod (12) is made for rubber materials, the middle part swing joint of buffer rod (12) has a movable section of thick bamboo (14), the inboard of a movable section of thick bamboo (14) and the outside at rolling disc (7) middle part are through second spring (13) swing joint.

3. A ball cushion mechanism of a shuttle valve as claimed in claim 1, wherein: the pull rope (10) is made of elastic materials.

4. A ball cushion mechanism of a shuttle valve as claimed in claim 2, wherein: the movable connection part of the buffer rod (12) and the movable cylinder (14) is in a screw rod shape, and the buffer rod (12) moves transversely.

5. A ball cushion mechanism of a shuttle valve as claimed in claim 2, wherein: the outer side of the buffer rod (12) is conical, and the angle of the cone is smaller than ninety degrees.

Background

The shuttle valve belongs to a straight stroke valve and is a valve with a valve body and an actuator which are combined into a whole. Its advantage is small, simple to operate, and in addition the particularity of inside piston structure for medium pressure does not have more resistance to the piston and disturbs hardly, thereby realizes quick switch, and the outstanding quality that the pressure loss is little, shuttle valve are through when carrying out the pan feeding at different openings, under the effect that fluid material pressure is different, make the less one side opening of pressure seal through the ball, thereby accomplish the work of reloading.

Traditional shuttle valve is when normal use, because when the shuttle valve is initial to start, only have one side and open and have the material circulation in, lead to the ball under fluid material impact, can be to opposite side quick travel, and cause great impact, thereby make the valve body take place great vibration, influence the normal use of equipment, and when the shuttle valve carries out the work of reloading, because the ball can remove about, thereby lead to the shuttle valve when the switching-over each time, all can take place the vibration, and produce wearing and tearing to the sealing washer, thereby influence shuttle valve life, and when the pressure of both sides fluid material is the same, the ball can appear and be in the intermediate position, lead to the condition emergence of both sides material pan feeding simultaneously, thereby influence the accuracy of pan feeding volume.

Disclosure of Invention

Aiming at the defects of the existing shuttle valve in the background technology in the using process, the invention provides the ball buffering mechanism of the shuttle valve, which has the advantages of starting buffering and material changing buffering and solves the technical problems that the feeding accuracy is influenced by the vibration and the same fluid material pressure caused by the left and right movement of the ball when the shuttle valve is in normal use.

The invention provides the following technical scheme: a ball buffering mechanism of a shuttle valve comprises a valve body, wherein a first opening is formed in the middle of the right side of the valve body, a second opening is formed in the middle of the left side of the valve body, a discharge hole is formed in the middle of the upper end of the valve body, balls are movably placed in the middle of an inner cavity of the valve body, sealing rings located on the inner sides of the first opening and the second opening are fixedly installed in the inner cavity of the valve body, a rotating disc located on the outer sides of the first opening and the second opening is movably installed in the inner cavity of the valve body, the middle of the rotating disc is in a blade shape twisted at a certain angle, the blade shape is located in the middle of the first opening and the second opening, a movable block located on the outer side of the rotating disc is movably sleeved in the inner cavity of the valve body, the middle of the movable block and the inner cavity of the valve body are movably connected through a first spring, the inner side of the movable block and the outer side of the rotating disc are movably connected through a pull rope, and a fixed block is fixedly installed in the inner cavity of the balls, and the fixed blocks are arranged around the central points of the balls at equal angles, the movable blocks and the fixed blocks are made of magnetic materials, and the inner magnetic poles of the first springs are different from the outer magnetic poles of the fixed blocks.

Preferably, the middle part of the inner cavity of the valve body is movably sleeved with a buffer rod positioned in the middle of the first opening and the second opening, the inner side of the buffer rod is made of rubber materials, the middle part of the buffer rod is movably connected with a movable barrel, and the inner side of the movable barrel and the outer side of the middle part of the rotating disc are movably connected through a second spring.

Preferably, the pull rope is made of elastic materials.

Preferably, the movable connection part of the buffer rod and the movable cylinder is in a screw rod shape, and the buffer rod moves transversely.

Preferably, the outer side of the buffer rod is conical, and the angle of the cone is less than ninety degrees.

The invention has the following beneficial effects:

1. according to the shuttle valve, the material changing buffer mechanism is arranged, so that the shuttle valve is normally used, when materials are fed into the opening at one side, fluid materials impact the blades at the inner side of the rotating disc, the rotating disc vertically rotates, the movable block is close to the inner side under the action of the pull rope, when the materials are changed, the ball is moved to the opening at one side of the previous material feeding by increasing the pressure in the opening at one side of the required materials or reducing the pressure at the other side, and under the action that the magnetic poles at the outer side of the fixed block in the inner cavity of the ball are the same as the magnetic poles at the inner side of the movable block, the ball is subjected to outward magnetic repulsion force, so that the ball can be buffered through the magnetic repulsion force when the materials are changed, and the problem that when the materials are changed, the multi-valve body is moved left and right by the ball to generate impact;

2. according to the invention, the starting buffer mechanism is arranged, so that when the shuttle valve is initially started and material is fed through the first opening or the second opening, fluid materials impact the ball, the ball moves to the other side and impacts the inner side of the buffer rod, so that the buffer rod drives the movable barrel to overcome the elastic force of the second spring and move outwards, and the impact force of the ball on the valve body is reduced under the actions of the rubber material on the inner side of the buffer rod and the buffering of the second spring, so that the problem that the ball impacts the valve body greatly when the shuttle valve is initially started is avoided;

3. according to the invention, the pressure adjusting mechanism is arranged, so that when the shuttle valve is used for changing materials, the materials can be changed only when the pressure of fluid materials at two sides has a certain difference, in the process of changing the materials, the impact force applied to the inner side of the rotating disc at the changed side is gradually reduced, so that the pulling force of the rotating disc on the pulling rope is gradually reduced, and under the action of the pulling rope made of an elastic material, the movable block is slowly moved outwards under the action of the first spring, so that the magnetic repulsion force applied to the ball at the changed side is reduced, the ball can be gradually moved towards the changed side, and the material changing is further completed;

4. according to the invention, the contact part of the buffer rod and the movable cylinder is in a screw rod shape, so that when the buffer mechanism is started to normally use, the buffer rod and the movable cylinder can be synchronously moved through screw rod-shaped connection, and are in rotary connection through the screw rod, so that when the material changing buffer mechanism normally works, the buffer rod on the reversed side moves outwards, thereby reducing the pressure difference required during material changing, and when reversing is slowly completed, the movable block drives the pull rope to slowly reset the rotating disc, the buffer rod can move inwards, thereby further reducing the impact force of the ball when the ball is in contact with the sealing ring, and further avoiding the problem that the sealing ring is damaged due to larger impact force when the ball moves leftwards and rightwards, and the service life of the shuttle valve is influenced.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a perspective view of the rotary plate of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. a valve body; 2. a first opening; 3. a second opening; 4. a discharge port; 5. a ball bearing; 6. a seal ring; 7. rotating the disc; 8. a movable block; 9. a first spring; 10. pulling a rope; 11. a fixed block; 12. a buffer rod; 13. a second spring; 14. a movable barrel.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-3, a ball buffering mechanism of a shuttle valve comprises a valve body 1, a first opening 2 is disposed in the middle of the right side of the valve body 1, a second opening 3 is disposed in the middle of the left side of the valve body 1, a discharge hole 4 is disposed in the middle of the upper end of the valve body 1, a ball 5 is movably disposed in the middle of the inner cavity of the valve body 1, a sealing ring 6 located inside the first opening 2 and the second opening 3 is fixedly installed in the inner cavity of the valve body 1, a rotating disc 7 located outside the first opening 2 and the second opening 3 is movably installed in the inner cavity of the valve body 1, the middle of the rotating disc 7 is in a blade shape twisted at a certain angle, the blade shape is located in the middle of the first opening 2 and the second opening 3, the material is transported through the shuttle valve by the arrangement of the rotating disc 7, when the material passes through the first opening 2 or the second opening 3, the fluid material can impact the blade twisted at a certain angle in the middle of the blade, the rotating disc 7 is enabled to vertically rotate, the movable block 8 positioned on the outer side of the rotating disc 7 is movably sleeved in the inner cavity of the valve body 1, the movable block 8 moves transversely, the middle part of the movable block 8 is movably connected with the inner cavity of the valve body 1 through the first spring 9, after the movable block 8 moves a certain distance to the inner side under the action of external force, when the external force is weakened or disappears, the movable block 8 can automatically reset through the first spring 9, the inner side of the movable block 8 is movably connected with the outer side of the rotating disc 7 through the pull rope 10, after the middle part of the rotating disc 7 is impacted by fluid materials to vertically rotate, the pull rope 10 can be continuously wound on the inner side of the cavity where the rotating disc 7 is located, so that the pull rope 10 pulls the movable block 8 to move to the inner side against the elastic force of the first spring 9, the fixed block 11 is fixedly installed in the inner cavity of the ball 5, and the fixed blocks 11 are arranged around the central point of the ball 5 at equal angles, make when ball 5 receives fluid material impact, no matter it rotates to arbitrary angle, fixed block 11 homoenergetic is in relatively fixed position, movable block 8 and fixed block 11 are magnetic material and make, and the inboard magnetic pole of first spring 9 and the 11 outside magnetic poles of fixed block are different, make movable block 8 draw close the back to the inboard of valve body 1 under the pulling force effect of stay cord 10, ball 5 is receiving fluid material impact, make the distance between its and the movable block 8 reduce the back, impact to valve body 1 when ball 5 lateral shifting is alleviated to magnetic repulsion between the two.

Wherein, the buffer rod 12 that is located first opening 2 and second opening 3 middle part is cup jointed in the middle part activity of 1 inner chamber of valve body, and the inboard of buffer rod 12 is made for rubber materials, make when there is no fluid material at one side opening part, buffer rod 12 is in the state of stretching out one side of rubber to the inboard all the time, the middle part swing joint of buffer rod 12 has a movable section of thick bamboo 14, the inboard of movable section of thick bamboo 14 and the outside at rolling disc 7 middle part pass through second spring 13 swing joint, make when the shuttle valve is initial to be started, under the impact of first opening 2 or 3 one side materials of second opening, when making ball 5 remove to the opposite side fast, can pass through ball 5 striking buffer rod 12's rubber one side, make buffer rod 12 drive movable section of thick bamboo 14 overcome the inboard outside movement of second spring 13, thereby alleviate the impact of ball 5 to 1 inner chamber of valve body.

The pull rope 10 is made of an elastic material, so that when the flow rate of fluid materials in the first opening 2 or the second opening 3 changes, the pull rope can slowly reset under the action of the first spring 9 through the movable block 8, and the pressure on the material-changed side is slowly reduced when the material is changed.

Wherein, buffer rod 12 and a movable section of thick bamboo 14 swing joint department are the screw rod form, and the movable mode of buffer rod 12 is lateral shifting, through the screw rod shape setting, make buffer rod 12 and a movable section of thick bamboo 14 be in the connection of relative fastening when starting buffer status, make buffer rod 12 can drive a movable section of thick bamboo 14 synchronous motion after receiving the impact, and when the buffer gear of reloading normally works, can be under the effect of rolling disc 7, make buffer rod 12 slowly outwards remove, thereby make the inboard and ball 5 separation of buffer rod 12, and then reduced the shuttle valve when reloading, the required pressure differential between first opening 2 and the second opening 3, and when accomplishing the switching-over, cooperate rolling disc 7 automatic re-setting through stay cord 10, thereby further reduce the impact force of ball 5 when contacting with sealing washer 6.

Wherein, the outside of buffer lever 12 is coniform, and the angle of circular cone is less than ninety degrees for when first opening 2 or second opening 3 are failed, the thrust that receives in the buffer lever 12 outside is less, thereby has avoided because fluid material promotes buffer lever 12 and draws close to the middle part, and the condition that leads to a movable section of thick bamboo 14 and buffer lever 12 screw rod form junction constantly to bump takes place.

The using method of the invention is as follows: connecting a first opening 2 of a valve body 1 with one fluid material, connecting a second opening 3 with another fluid material, connecting a discharge port 4 with a discharge position, controlling the pressure of the fluid materials in the first opening 2 and the second opening 3 by controlling the rotating speed of a pump, enabling a ball 5 to transversely move under the action of pressure, closing the side with smaller pressure and further controlling the feeding amount of the materials;

material changing and buffering: when the shuttle valve is normally used, when materials are fed into an opening at one side, fluid materials impact blades at the inner side of the rotating disc 7, so that the rotating disc 7 vertically rotates, the movable block 8 overcomes the elastic force of the first spring 9 to be close to the inner side under the action of the pull rope 10, when materials are changed, the ball 5 moves to the opening at one side of the previous fed materials under the action of pressure by increasing the pressure in the opening at one side of the required materials or reducing the pressure at the other side, and under the action that the magnetic pole at the outer side of the fixed block 11 in the inner cavity of the ball 5 is the same as the magnetic pole at the inner side of the movable block 8, the ball 5 is subjected to outward magnetic repulsion force, so that the ball 5 can be buffered through the magnetic repulsion force when materials are changed;

starting buffering: when the shuttle valve is initially started, when materials are fed through the first opening 2 or the second opening 3, the fluid materials impact the ball 5, the ball 5 moves to the other side and impacts the inner side of the buffer rod 12, so that the buffer rod 12 drives the movable barrel 14 to move outwards by overcoming the elastic force of the second spring 13, and the impact force of the ball 5 on the valve body 1 is reduced under the action of the rubber material on the inner side of the buffer rod 12 and the buffer of the second spring 13;

the pressure regulating mechanism: when the shuttle valve is used for changing materials, the materials can be changed only when the pressure of fluid materials at two sides has a certain difference, in the process of changing the materials, the pulling force of the rotating disc 7 on the pulling rope 10 is gradually reduced by gradually reducing the impact force applied to the inner side of the rotating disc 7 at the material changing side, and under the action of the pulling rope 10 made of elastic materials, the movable block 8 slowly moves towards the outer side under the action of the first spring 9, so that the magnetic repulsion force applied to the balls 5 at the material changing side is reduced, and the balls 5 can gradually move towards the direction changed side to finish the material changing;

when starting buffer gear normal use, the connected mode through buffer rod 12 and movable cylinder 14 is the screw rod form and connects, make the two can synchronous motion, and change the connection through the screw rod, make when buffer gear normal work reloads, buffer rod 12 by the switching-over side moves to the outside, thereby reduce the required pressure differential when reloading, and when slowly accomplishing the switching-over, when the movable block 8 drives stay cord 10 and makes rolling disc 7 slowly reset, enable buffer rod 12 to move to the inside, thereby further reduce the impact force of ball 5 when contacting with sealing washer 6.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.