CN216342748U - One-way valve of plunger pump - Google Patents

Abstract

The application discloses a one-way valve of a plunger pump, which relates to the field of plunger pumps and comprises a first cavity, wherein the bottom of the first cavity is connected with a second cavity, the bottom of the second cavity is provided with a liquid outlet, the second cavity is connected with a limiting pipe, the limiting pipe is provided with a first expansion spring, the top of the first expansion spring is fixedly connected with a first sealing ball, the bottom end of the first cavity is fixedly connected with a connecting port, the outer annular surface of the connecting port, which is opposite to the limiting pipe, is connected with a sealing pipe, the sealing pipe extends into the second cavity, the position of the second cavity, which is opposite to the sealing pipe, is provided with a circular pressure relief groove, and the pressure relief groove is arranged in the second cavity, so that the pressure change in the first cavity can be controlled by a plunger, the two sealing balls can be synchronously controlled to block a pipeline, and the flowing speed of the device to a medium can be accelerated, thereby improving the working efficiency of the device.

Description

One-way valve of plunger pump

Technical Field

The application relates to the field of plunger pumps, in particular to a one-way valve of a plunger pump.

Background

The plunger pump is an important device of the hydraulic system. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity so as to absorb and press oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like, and is widely applied to occasions with high pressure, large flow and flow regulation, such as hydraulic machines, engineering machinery and ships. The check valve is commonly called as a check valve, fluid can only flow along the water inlet, and the medium at the water outlet cannot flow back. Check valves are also known as check valves or check valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems.

In the actual use process, because the one-way valve is mostly a single-port valve, the discharge rate of the medium is slow. Therefore, there is a need for an improved structure of a check valve, and a check valve for a plunger pump is provided to better solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The purpose of this application lies in: in order to solve the problem that the medium is discharged slowly by the one-way valve, the application provides the one-way valve of the plunger pump.

The technical scheme adopted by the application is as follows:

a one-way valve of a plunger pump comprises a first cavity, wherein a through groove is formed in the top of the first cavity, a plunger is inserted in a barrel groove, a sealing gasket is fixedly connected at the joint of the upper surface of the first cavity and the plunger, the bottom end of the plunger extends to an inner cavity of the first cavity, the bottom of the first cavity is connected with a second cavity, a liquid outlet is formed in the bottom of the second cavity, a cylindrical limiting pipe is fixedly connected to the position of the inner cavity of the second cavity relative to the liquid outlet, a first expansion spring is fixedly installed on the position of the inner cavity of the limiting pipe relative to the liquid outlet, a first sealing ball is fixedly connected to the top of the first expansion spring, the upper inner wall of the limiting pipe extends inwards to form a bulge, the first sealing ball is located below the bulge, a connecting port extending downwards is fixedly connected to the bottom end of the first cavity, and the connecting port extends to the inside of the second cavity, the connector is fixedly connected with a sealing pipe which is circularly arranged relative to the outer annular surface of the limiting pipe, the sealing pipe extends into the second cavity, and the second cavity is provided with a pressure relief groove which is circularly arranged relative to the sealing pipe.

In a preferred embodiment, the connecting port is located above the limiting tube, and the connecting port and the limiting tube are located on the same axis.

In a preferred embodiment, the inside fixedly connected with solid fixed ring of sealed tube, and the top fixedly connected with second expanding spring of solid fixed ring, and the top fixedly connected with second ball sealer of second expanding spring, the sealed tube is for the top fixedly connected with sealing plate of second ball sealer, and the first half and the sealing plate of second ball sealer closely laminate.

In a preferred embodiment, the first sealing ball is hemispherical, and the upper half part of the first sealing ball is tightly attached to the protrusion on the inner wall of the limiting pipe.

In a preferred embodiment, the diameter of the bottom surface of the first cavity is larger than that of the bottom surface of the second cavity, the bottom surface of the first cavity is fixedly connected with a positioning plate relative to the outer annular surface of the second cavity, the position of the outer annular surface of the second cavity relative to the positioning plate is fixedly connected with an annular base, the annular base and the positioning plate are provided with positioning holes arranged in a cross shape, and fixing bolts are connected to the positioning holes in a threaded manner.

In a preferred embodiment, the bottom end of the positioning plate extends towards the inside, and one end of the positioning plate close to the second cavity is fixedly connected with a buffer spring arranged in a ring shape, and one end of the buffer spring far away from the positioning plate is fixedly connected with the outer wall of the second cavity.

To sum up, the beneficial effect of this application is:

1. in this application, through be provided with the pressure release groove in the second cavity, can change through the inside atmospheric pressure of first cavity of plunger control to two sealed balls of synchro control block up the pipeline, thereby accelerated this device to the flow velocity of medium, and then improved the work efficiency of this device.

2. In this application, through locating plate and cyclic annular base with first cavity and second cavity zonulae occludens, increased the seal of this device, simultaneously because buffer spring's existence, can reduce vibrations effectively at the medium through the in-process that this device flows, prolong the life of this device.

Drawings

Fig. 1 is a schematic structural diagram of the present application.

Fig. 2 is an enlarged view of the structure at a in fig. 1 of the present application.

Fig. 3 is a bottom view of the present application.

Description of reference numerals:

1. a first cavity; 2. a plunger; 3. a gasket; 4. a second cavity; 5. a liquid outlet; 6. a limiting pipe; 7. a first extension spring; 8. a first sealing ball; 9. a connecting port; 10. a sealing tube; 11. a pressure relief groove; 12. a second extension spring; 13. a second sealing ball; 14. positioning a plate; 15. an annular base; 16. a fixing bolt; 17. a buffer spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.

A check valve of a plunger pump according to an embodiment of the present application will be described in detail with reference to fig. 1 to 3.

Referring to fig. 1-3, the application discloses a check valve of a plunger pump, which comprises a first cavity 1, wherein a through groove is formed at the top of the first cavity 1, a plunger 2 is inserted in the barrel groove, a sealing gasket 3 is fixedly connected at the joint of the upper surface of the first cavity 1 and the plunger 2 to maintain the sealing performance of the device, the bottom end of the plunger 2 extends to an inner cavity of the first cavity 1, a second cavity 4 is connected at the bottom of the first cavity 1, a liquid outlet 5 is formed at the bottom of the second cavity 4 to facilitate discharging media, a cylindrical limiting pipe 6 is fixedly connected at the position of the inner cavity of the second cavity 4 relative to the liquid outlet 5, a first expansion spring 7 is fixedly installed at the position of the inner cavity of the limiting pipe 6 relative to the liquid outlet 5, a first sealing ball 8 is fixedly connected at the top of the first expansion spring 7, and the upper inner wall of the limiting pipe 6 extends inwards to form a bulge, and first ball sealer 8 is located bellied below, and first ball sealer 8 is the hemisphere type, and the upper half of first ball sealer 8 closely laminates with the arch on the spacing pipe 6 inner wall, when plunger 2 rebound, will drive first ball sealer 8 and rise to block up spacing pipe 6, and will drive first ball sealer 8 and descend when plunger 2 descends, thereby open liquid outlet 5.

Referring to fig. 1-3, a connecting port 9 extending downward is fixedly connected to the bottom end of the first cavity 1, the connecting port 9 extends into the second cavity 4, the connecting port 9 is located above the limiting tube 6, and the connecting port 9 and the limiting tube 6 are located on the same axis, so that a medium can conveniently fall down, a sealing tube 10 arranged in a circular shape is fixedly connected to the connecting port 9 relative to the outer annular surface of the limiting tube 6, the sealing tube 10 extends into the second cavity 4, the top of the sealing tube 10 is arranged on the connecting port 9, and the connecting port is arranged in an inclined shape, so that the medium can conveniently flow into the sealing tube 10 when the medium is too much, a fixing ring is fixedly connected to the inside of the sealing tube 10, the fixing ring is hollow and does not affect the medium flow, a second expansion spring 12 is fixedly connected to the top of the fixing ring, and a second sealing ball 13 is fixedly connected to the top of the second expansion spring 12, sealing tube 10 is for the top fixedly connected with sealing plate of second sealing ball 13, and the first half and the sealing plate of second sealing ball 13 closely laminate, when plunger 2 rebound, will drive second sealing ball 13 and rise, thereby will block up sealing tube 10, and will drive second sealing ball 13 and descend when plunger 2 descends, thereby make the medium pass through sealing tube 10, the pressure release groove 11 of circular setting is seted up for sealing tube 10's position to second cavity 4, last medium can be discharged through pressure release groove 11, the bore increases has kept the leakproofness of this device simultaneously.

Referring to fig. 1-3, the diameter of the bottom surface of the first chamber 1 is larger than that of the bottom surface of the second chamber 4, and the bottom surface of the first chamber 1 is fixedly connected with a positioning plate 14 relative to the outer annular surface of the second chamber 4, the outer annular surface of the second chamber 4 is fixedly connected with an annular base 15 relative to the positioning plate 14, the annular base 15 and the positioning plate 14 are provided with positioning holes arranged in a cross shape, and fixing bolts 16 are connected to the positioning holes in a threaded manner, so as to tightly connect the first chamber 1 and the second chamber 4, thereby increasing the sealing performance of the device, the bottom end of the positioning plate 14 extends inwards, and one end close to the second chamber 4 is fixedly connected with a buffer spring 17 arranged in an annular manner, one end of the buffer spring 17 far from the positioning plate 14 is fixedly connected with the outer wall of the second chamber 4, and in the process of medium flowing through the device, the buffer spring 17 can effectively reduce vibration, the service life of the device is prolonged.

The implementation principle of the application is as follows: when the plunger 2 ascends, the first sealing ball 8 and the second sealing ball 13 are driven to ascend, so that the limiting pipe 6 and the sealing pipe 10 are blocked, and when the plunger 2 descends, the first sealing ball 8 and the second sealing ball 13 are driven to descend, so that a medium passes through the liquid outlet 5 and the pressure relief groove 11.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (6)

1. A check valve of a plunger pump comprises a first cavity (1), and is characterized in that: the top of the first cavity (1) is provided with a through groove, a plunger (2) is inserted in the barrel groove, a sealing gasket (3) is fixedly connected at the joint of the upper surface of the first cavity (1) and the plunger (2), the bottom end of the plunger (2) extends to the inner cavity of the first cavity (1), the bottom of the first cavity (1) is connected with a second cavity (4), the bottom of the second cavity (4) is provided with a liquid outlet (5), the position of the inner cavity of the second cavity (4) relative to the liquid outlet (5) is fixedly connected with a cylindrical limiting pipe (6), the position of the inner cavity of the limiting pipe (6) relative to the liquid outlet (5) is fixedly provided with a first telescopic spring (7), the top of the first telescopic spring (7) is fixedly connected with a first sealing ball (8), and the upper inner wall of the limiting pipe (6) extends inwards to form a protrusion, and first ball sealer (8) are located bellied below, the bottom fixedly connected with of first cavity (1) is the connector (9) that extends downwards, and connector (9) extend to the inside of second cavity (4), connector (9) are for the sealed tube (10) of the outer anchor ring fixedly connected with circular setting of spacing pipe (6), and the inside of extending to second cavity (4) of sealed tube (10), circular setting's pressure release groove (11) is seted up for the position of sealed tube (10) in second cavity (4).

2. The check valve of a plunger pump according to claim 1, wherein: the connecting port (9) is positioned above the limiting pipe (6), and the connecting port (9) and the limiting pipe (6) are positioned on the same axis.

3. The check valve of a plunger pump according to claim 1, wherein: the utility model discloses a sealed water-stop pipe, including sealed tube (10), the fixed ring of inside fixedly connected with of sealed tube (10), and fixed ring's top fixedly connected with second expanding spring (12), and the top fixedly connected with second ball sealer (13) of second expanding spring (12), sealed tube (10) are for the top fixedly connected with sealing plate of second ball sealer (13), and the first half and the sealing plate of second ball sealer (13) closely laminate.

4. The check valve of a plunger pump according to claim 1, wherein: first ball sealer (8) are the hemisphere type, and the first half of ball sealer (8) closely laminates with the arch on spacing pipe (6) inner wall.

5. The check valve of a plunger pump according to claim 1, wherein: the diameter of the bottom surface of the first cavity (1) is larger than that of the bottom surface of the second cavity (4), the bottom surface of the first cavity (1) is fixedly connected with a positioning plate (14) relative to the outer annular surface of the second cavity (4), the outer annular surface of the second cavity (4) is fixedly connected with an annular base (15) relative to the positioning plate (14), positioning holes which are arranged in a cross shape are formed in the annular base (15) and the positioning plate (14), and fixing bolts (16) are connected to the positioning holes in a threaded mode.

6. The check valve of a plunger pump according to claim 5, wherein: the bottom of locating plate (14) extends to inside, and is close to buffer spring (17) that the one end fixedly connected with ring type of second cavity (4) set up, the outer wall fixed connection of one end and second cavity (4) that locating plate (14) were kept away from in buffer spring (17).

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