1. The utility model provides a valve that relies on negative pressure to open, removes accessory (4) including fixed accessory (1), water service pipe (2), negative pressure response accessory (3) and negative pressure, its characterized in that: fixing parts (1) one end joint is fixed with water service pipe (2), fixing parts (1) inboard is located water service pipe (2) one end joint has negative pressure response accessory (3), negative pressure response accessory (3) inboard runs through the joint and has case (301), water service pipe (2) have negative pressure removal accessory (4) for fixing parts (1) other end joint.

2. The valve opened by the negative pressure as claimed in claim 1, wherein the fixing fitting (1) is provided with a fixing port (101) at the other end relative to the water pipe (2), the fixing fitting (1) is positioned at one end of the water pipe (2) and is clamped and fixed with a first limiting pipe (102), and one end of the valve core (301) is inserted into the inner side of the first limiting pipe (102).

3. The negative pressure-dependent opening valve according to claim 1, wherein one end of the water pipe (2) is provided with a water outlet (201), the other end of the water pipe (2) is provided with a water inlet (202), and the water inlet (201) and the water outlet (202) are communicated.

4. The negative pressure opening valve according to claim 1, wherein a sealing fitting (302) is clamped on the outer peripheral surface of the valve core (301), the valve core (301) is clamped inside the water through pipe (2) in a penetrating way, and the sealing fitting (302) is positioned inside the water through pipe (2).

5. The valve which can be opened by negative pressure according to claim 1, wherein the negative pressure moving accessory (4) is provided with a second limiting pipe (402) at one side of the water pipe (2), a clamping groove (401) is clamped at the inner side of the second limiting pipe (402), and the other end of the valve core (301) opposite to the negative pressure sensing accessory (3) is clamped at the inner side of the clamping groove (401).

Background

The valve is a pipeline accessory used for opening and closing a pipeline, controlling the flow direction, adjusting and controlling parameters of a conveying medium, is a control component in a fluid conveying system, and can be divided into the following parts according to the functions: shut-off valves, check valves, regulating valves and the like, have the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, and can control various types of fluids, such as: air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, wherein the on-off valve is most commonly used in life and production, is a valve for controlling the on-off of the media, is commonly used in a pipeline with a pressurizing device, such as a water pump and the like, and has the following disadvantages in practical use:

1. according to the prior published document, CN 206845953U-valve, a circular groove is formed in the end of the valve plate, an anti-deviation gasket is arranged in the circular groove, the valve rod passes through the valve body and abuts against the anti-deviation gasket, the valve cover passes through the valve rod and is fixedly connected with the valve body, most of the prior valves are of the structure, although the structure is simple and the cost is low, the valve needs to be opened and closed by manual operation of a user, and time and labor are wasted;

2. the existing valve can only control the on-off of the valve, and has no way to ensure that a medium behind the valve is always at relatively stable pressure, so that the problem that the pressure and the flow are difficult to control when a pump body is used for pressurizing can occur, the water pressure is unstable, and the use experience is greatly reduced.

Therefore, the existing valve which is opened by the negative pressure cannot meet the requirement in practical use, so that the market urgently needs improved technology to solve the problems.

Disclosure of Invention

The invention aims to provide a valve which is opened by means of negative pressure, and solves the problems that although the existing valve is simple in structure and low in cost, the valve wastes time and labor during use, the valve cannot ensure that a medium is always at relatively stable pressure, and the use experience is reduced through a fixed fitting, a water pipe, a negative pressure sensing fitting and a negative pressure moving fitting.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a valve which is opened by negative pressure, comprising a fixed fitting, a water pipe, a negative pressure sensing fitting and a negative pressure moving fitting, wherein one end of the fixed fitting is clamped and fixed with the water pipe, the position of the valve in use can be fixed by the fixed fitting, the valve is kept stable, unnecessary loss caused by looseness after long-time use is avoided, the service life of the valve is prolonged, the position of the negative pressure sensing fitting can be fixed by the fixed fitting, the valve can be opened and closed according to the pressure of a water outlet, the negative pressure sensing fitting is clamped at one end of the water pipe at the inner side of the fixed fitting, a medium can flow through the water pipe when the valve is subjected to pressure by the water pipe, a valve core is clamped at the inner side of the negative pressure sensing fitting, and the negative pressure moving fitting is clamped at the other end of the water pipe relative to the fixed fitting, the valve core can move in the invention, so that the invention can be sealed when no negative pressure exists, the medium is prevented from flowing through, and when the negative pressure is generated, the medium flows into the valve body to form a passage.

Furthermore, the fixing fitting is provided with a fixing port opposite to the other end of the water service pipe, the fixing fitting is positioned at one end of the water service pipe and is clamped and fixed with the first limiting pipe, one end of the valve core is inserted into the inner side of the first limiting pipe, and the position of the water service pipe can be fixed through the fixing port, so that the falling and damage of the water service pipe due to aging and loosening after long-time use are avoided, accidents are avoided, and the service life of the water service pipe is prolonged.

Furthermore, a water outlet is formed in one end of the water service pipe, a water inlet is formed in the other end of the water service pipe, the water inlet and the water outlet are communicated in a penetrating mode, a medium can enter the inner side of the water service pipe through the water inlet, water pressure is stabilized through the water inlet, the reduction of use experience caused by unstable water pressure is avoided, and the medium with stable pressure and flow can flow out through the water outlet.

Furthermore, the outer peripheral surface of the valve core is clamped with a sealing fitting, the valve core is clamped inside the water pipe in a penetrating way, the sealing fitting is positioned inside the water pipe, when negative pressure is generated at one end of the water outlet, the negative pressure sensing fitting senses the pressure generated by the negative pressure, so that the negative pressure sensing fitting generates pressure to enable the valve core, the sealing fitting and the clamping groove to move towards one end of the negative pressure moving fitting, a gap is generated between the sealing fitting and the water pipe, a water inlet is communicated to enable a medium to flow into the water pipe and flow out from the water outlet, when no negative pressure is generated at one end of the water outlet, the negative pressure sensing fitting drives the valve core, the sealing fitting and the clamping groove to move towards one end of the fixing fitting, so that the sealing fitting and the water pipe are attached and sealed, the medium is sealed to form a closed state, the medium cannot flow into the valve body, the closed state is formed, and the pressurizing device connected at the water outlet end can work under the same inlet pressure environment all the time, the flow and the pressure of the medium entering the supercharging device are always kept stable, the output is stable according to the change of the set requirement, parameters such as the flow and the pressure of the medium are easier to control, and the influence of the pressure change at an inlet is avoided.

Furthermore, a second limiting pipe is arranged on one side, located on the water service pipe, of the negative pressure moving accessory, a clamping groove is clamped on the inner side of the second limiting pipe, the valve element is clamped on the inner side of the clamping groove relative to the other end of the negative pressure sensing accessory, and the negative pressure moving accessory can move along with the pressure applied to one end of the water outlet, so that the inner side of the water-saving valve is kept sealed, the stability of the water-saving valve in use is improved, the experience feeling of a product is improved, manual opening and closing of a user are not needed, and time and labor are saved.

The invention has the following beneficial effects:

1. the invention solves the problems that most of the existing valves are simple in structure and low in cost, but the valves need to be opened and closed manually by a user, and time and labor are wasted by arranging the water service pipe, the negative pressure sensing part and the negative pressure moving part.

2. The invention solves the problems that the existing valve can only control the on-off of the valve, the medium behind the valve is always in a relatively stable pressure, the pressure and the flow are difficult to control when the pump body is used for pressurizing, the water pressure is unstable, and the use experience is greatly reduced by arranging the water pipe, the negative pressure sensing accessory and the negative pressure moving accessory.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a structural effect diagram of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a cross-sectional view of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a fixed fitting; 101. a fixed port; 102. a first limit tube; 2. a water pipe; 201. a water outlet; 202. a water inlet; 3. a negative pressure sensing fitting; 301. a valve core; 302. a sealing fitting; 4. a negative pressure moving fitting; 401. a card slot; 402. and a second limiting pipe.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, the invention is a valve opening by negative pressure, comprising a fixed fitting 1, a water pipe 2, a negative pressure sensing fitting 3 and a negative pressure moving fitting 4, wherein one end of the fixed fitting 1 is fixed with the water pipe 2 in a clamping manner, the position of the valve in use can be fixed by the fixed fitting 1, the valve is kept stable, unnecessary loss caused by looseness after long-time use is avoided, the position of the negative pressure sensing fitting 3 can be fixed by the fixed fitting 1, the valve can be opened and closed according to the pressure of a water outlet 201, the negative pressure sensing fitting 3 is clamped at one end of the water pipe 2 at the inner side of the fixed fitting 1, a medium can flow through the water pipe 2 when the valve is pressurized by the water pipe 2, a valve core 301 is clamped at the inner side of the negative pressure sensing fitting 3, the negative pressure moving fitting 4 is clamped at the other end of the water pipe 2 relative to the fixed fitting 1, the valve core 301 can move in the invention, so that the invention can seal when no negative pressure exists, and avoid the circulation of the medium, and when the negative pressure is generated, the medium flows into the invention to form a passage, so that the invention can ensure that the water pressure of the medium passing through the water pipe 2 is not influenced by the pressure change in the water inlet connecting pipeline, and the output of the medium is stable.

As shown in fig. 2-3, the other end of the fixing fitting 1 opposite to the water pipe 2 is provided with a fixing port 101, the fixing fitting 1 is positioned at one end of the water pipe 2 and is clamped and fixed with a first limit pipe 102, one end of the valve core 301 is inserted into the inner side of the first limit pipe 102, one end of the water pipe 2 is provided with a water outlet 201, the other end of the water pipe 2 is provided with a water inlet 202, the water inlet 201 and the water outlet 202 are communicated in a penetrating manner, the position of the water pipe can be fixed through the fixing port 101, the falling and damage of the water pipe due to aging and loosening after long-time use are avoided, accidents are avoided, a medium can enter the inner side of the water pipe 2 through the water inlet 202, the water pressure is stabilized through the water pipe, the decline of the use experience due to unstable water pressure is avoided, and the medium with stable pressure and stable flow can flow out through the water outlet 201.

As shown in fig. 3, a sealing fitting 302 is clamped on the outer peripheral surface of the valve core 301, the valve core 301 is clamped inside the water pipe 2 in a penetrating way, the sealing fitting 302 is positioned inside the water pipe 2, when negative pressure is generated at one end of the water outlet 201, the negative pressure sensing fitting 3 senses pressure generated by the negative pressure, the negative pressure sensing fitting 3 generates pressure to move the valve core 301, the sealing fitting 302 and the clamping groove 401 to one end of the negative pressure moving fitting 4, so that a gap is generated between the sealing fitting 302 and the water pipe 2, the water inlet 202 is conducted to enable a medium to flow into the water pipe 2 and flow out from the water outlet 201, when no negative pressure is generated at one end of the water outlet 201, the negative pressure sensing fitting 3 drives the valve core 301, the sealing fitting 302 and the clamping groove 401 to move to one end of the fixing fitting 1, so that the sealing fitting 302 and the water pipe 2 are attached and sealed to form a closed state, so that the medium cannot flow into the water pipe 2, and form a closed state, guarantee to work under the same inlet pressure environment at the supercharging device that delivery port 201 end is connected all the time, let in the flow and the pressure of supercharging device interior medium and remain stable all the time to can require to change the output stability according to setting for, change the flow pressure isoparametric of management and control medium, do not receive the influence of import department pressure variation.

As shown in fig. 3, the negative pressure moving fitting 4 is provided with a second limiting pipe 402 at one side of the water pipe 2, a clamping groove 401 is clamped at the inner side of the second limiting pipe 402, the valve core 301 is clamped at the inner side of the clamping groove 401 relative to the other end of the negative pressure sensing fitting 3, and the negative pressure moving fitting 4 can move along with the pressure applied to one end of the water outlet 201, so that the inner side of the water outlet 201 is kept sealed, the stability of the water outlet 201 is improved, the water outlet is high in automation degree, and a user does not need to manually open and close the water outlet.

One specific application of this embodiment is: one end of a water outlet 201 of the invention is fixed at the inlet end of a pressurizing device, and the invention is fixed through a fixing port 101, so that the stability of the invention in use is improved, the occurrence of accidents caused by aging and loosening after long-time use is avoided, the service life of the invention is prolonged, one end of the water outlet 201 of the invention is pressurized through a pressurizing device such as a water pump and the like, after a negative pressure induction fitting 3 induces the pressure generated by negative pressure, the negative pressure induction fitting 3 generates pressure to enable a valve core 301, a sealing fitting 302 and a clamping groove 401 to move towards one end of a negative pressure moving fitting 4, so that a gap is generated between the sealing fitting 302 and a water pipe 2, a water inlet 202 is conducted to enable a medium to flow into the water pipe 2 and flow out from the water outlet 201, the invention ensures that the water pump connected at the end of the water outlet 201 can always work under the same inlet pressure environment, and the flow and the pressure of the medium introduced into the water pump are always stable, the booster can change the boosting size according to the input voltage of the water pump, the flow of the medium is further controlled, after the water pump is turned off, no negative pressure is generated at one end of the water outlet 201, the negative pressure sensing fitting 3 drives the valve core 301, the sealing fitting 302 and the clamping groove 401 to move towards one end of the fixed fitting 1, so that the sealing fitting 302 and the water pipe 2 are attached and sealed, the medium is sealed to form a closed state, the medium cannot flow into the booster, and the closed state is formed.

The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made to the technical solutions described in the above embodiments, and to some of the technical features thereof, are included in the scope of the present invention.