CN211474413U - Combined integrated valve of plunger type reciprocating pump - Google Patents

Abstract

The application belongs to the technical field of oil field water injection, and particularly relates to a combined integrated valve of a plunger type reciprocating pump. In oilfield flooding development, plunger reciprocating pumps are widely used in order to deliver water to subterranean formations. The hydraulic end of the plunger type reciprocating pump which is commonly used at present adopts a flat valve combination, so that the durability is poor, and the sealing is easy to lose efficacy. The application provides a combined integrated valve of a plunger type reciprocating pump, which comprises a valve body, a liquid inlet valve component and a liquid outlet valve component; the valve plate is omitted, the valve plate is replaced by a conical valve core assembly, the conical surface is used for sealing, the sealing surface is reduced, the movement resistance is reduced, the closing speed of the valve core is increased, and the sealing effect is obviously improved; meanwhile, the phenomenon that the liquid inlet valve core and the liquid discharge valve core are subjected to water hammer is eliminated, and liquid enters the liquid discharge cavity through the liquid discharge through hole at the side position of the end face of the valve body and is discharged through the liquid discharge valve. The service life of the integrative valve of combination is showing to improve in this application, and the life is changed in the extension maintenance, practices thrift economic cost, work load is little and the installation is convenient.

Description

Combined integrated valve of plunger type reciprocating pump

Technical Field

The application relates to the technical field of oilfield water injection, in particular to a combined integrated valve of a plunger type reciprocating pump.

Background

In oilfield flooding development, plunger reciprocating pumps are widely used in order to deliver water to subterranean formations. The hydraulic end of the plunger type reciprocating pump commonly used at present adopts a flat valve combination, and the components of the flat valve combination are as follows: the pump body (the periphery is provided with a plurality of liquid inlet holes), a liquid inlet spring, a liquid inlet valve plate, a flat valve, a valve core rubber gasket, a liquid discharge spring, a liquid discharge valve core, a valve cover and the like. When the plunger moves backwards, the liquid discharge sheet is closed with the plane of the flat valve under the pressure of the liquid discharge spring; the pressure in the liquid inlet cavity is lower than the pressure in the inlet pipe, the liquid inlet spring and the liquid inlet valve plate move backwards under the action of the hydraulic pressure, so that the liquid inlet valve plate and the flat valve form relative displacement, and liquid enters the suction cavity through the liquid inlet hole on the periphery of the flat valve. When the plunger moves forwards, the pressure in the liquid inlet cavity is higher than that in the inlet pipe along with the forward movement of the plunger, the liquid inlet spring and the liquid inlet valve plate form relative displacement under the action of liquid pressure, the displacement is reduced until the two planes are overlapped to form a closed pressure cavity, the pressure in the liquid inlet cavity is increased along with the forward movement of the plunger, and when the pressure in the liquid discharge cavity reaches a certain pressure value, the liquid discharge valve plate is opened, and liquid is discharged from the liquid discharge hole in the middle of the flat valve and enters the high pressure cavity until reaching an outlet pipeline.

However, in actual oilfield water injection operation, the injected water source is generally stratum produced water which is high in salt content and many in impurities, and meanwhile, particle sand stones are also accompanied, so that the water quality is poor, and the plane corrosion of the flat valve and the sealing failure caused by the puncture of the valve plate are often caused; meanwhile, due to the existence of impurities and granular sand stones, the failure of the plane seal of the valve plate and the flat valve is easy to happen, the pump efficiency is reduced, and the maintenance is frequent, so that the normal production of the oil field is influenced.

The failure of the flat valve mainly results from the failure of the sealing surface between the valve plate and the flat surface of the flat valve. The main failure mode is that the sealing surface of the valve plate is provided with a groove, and the sealing surface of the flat valve is provided with a groove or a pit. The reason for the occurrence of grooves and pits on the sealing surface is mainly formed by the impact of solid particles contained in the liquid on the sealing surface and the scouring during the flowing of the liquid; meanwhile, the sealing surface of the flat valve is a plane, and when the direction of the reciprocating movement of the plunger is converted, the flowing direction of liquid is also converted at the same time, so that the water hammer effect is generated on the surface of the flat valve, and the damage speed of the sealing surface is increased; meanwhile, due to the water hammer effect, the closing time of the valve plate is delayed, and the pumping displacement of the whole valve body is reduced.

SUMMERY OF THE UTILITY MODEL

The application provides a combined integrated valve of a plunger type reciprocating pump, which aims to solve the problems that the existing flat valve of the plunger type reciprocating pump is poor in durability and easy to lose effectiveness in sealing.

The technical scheme adopted by the application is as follows:

a combined integrated valve of a plunger type reciprocating pump comprises a valve body, a liquid inlet valve component and a liquid discharge valve component;

the outer side wall of the valve body is provided with a liquid inlet through hole, the liquid inlet valve component is communicated with a liquid inlet pipeline through the liquid inlet through hole, the end face, close to the liquid inlet valve component, of the valve body is provided with a liquid discharge through hole, the liquid inlet valve component is communicated with the liquid discharge valve component through the liquid discharge through hole, one end of the valve body is provided with a horn-shaped opening in sealing connection with the liquid inlet valve component, and the other end of the valve body is provided with a horn-shaped opening in sealing connection with the liquid discharge valve component;

the liquid inlet valve assembly comprises a liquid inlet valve core and a liquid inlet spring, and the liquid inlet valve core is fixedly connected with the liquid inlet spring;

the liquid discharge valve component comprises a liquid discharge valve core, a liquid discharge spring and a liquid discharge cover, wherein a columnar protruding portion is arranged on the end face of the liquid discharge end of the liquid discharge valve core, the liquid discharge spring is sleeved on the outer side of the columnar protruding portion, the liquid discharge spring is connected with the liquid discharge cover, the liquid discharge cover is in threaded connection with the valve body, and a liquid discharge channel is arranged on the liquid discharge cover.

Optionally, the inner end surface of the liquid inlet valve core is provided with liquid inlet blades, the inner end surface of the liquid discharge valve core is provided with liquid discharge blades, and the liquid inlet blades and the liquid discharge blades are obliquely arranged.

Optionally, a concave part connected with the liquid inlet pipeline is arranged on the outer side wall of the valve body.

Optionally, the liquid discharge cover is provided with a hollowed-out side wall.

Optionally, the liquid inlet valve assembly further comprises a polyurethane pad, a liquid inlet recessed portion is arranged on a sealing contact surface of the liquid inlet valve core, and the polyurethane pad is nested on the liquid inlet recessed portion;

the liquid discharge valve assembly further comprises a polyurethane pad, a liquid discharge concave part is arranged on the sealing contact surface of the liquid discharge valve core, the polyurethane pad is nested on the liquid discharge concave part, and an opening of the liquid inlet through hole is formed in the bottom surface of the concave part.

Optionally, the trumpet-shaped openings of the valve body are all set to be 45 degrees, the sealing contact surface of the liquid inlet valve core is set to be 45 degrees, and the sealing contact surface of the liquid discharge valve core is set to be 45 degrees.

Optionally, a thrust bearing and a bearing ring sheet are arranged on the liquid discharge end face of the liquid discharge valve core, and one end of the liquid discharge spring is rotatably connected with the thrust bearing through the bearing ring sheet.

Optionally, one end of the liquid inlet spring is also provided with a radial rotating roller, and the liquid inlet spring radially rotates in the pipeline through the radial rotating roller.

Optionally, the feed liquor through-hole sets up to 6, the feed liquor through-hole evenly sets up on the radial outer wall of valve body, the flowing back through-hole sets up to 6, the flowing back through-hole evenly sets up the valve body is close to on the terminal surface of feed liquor case.

Optionally, the valve body is cylindrical.

The technical scheme of the application has the following beneficial effects:

the combined integrated valve of the plunger type reciprocating pump comprises a valve body, a liquid inlet valve component and a liquid discharge valve component; the outer side wall of the valve body is provided with a liquid inlet through hole, the liquid inlet valve assembly is communicated with a liquid inlet pipeline through the liquid inlet through hole, the end surface of the valve body, which is close to the liquid inlet valve assembly, is provided with a liquid discharge through hole, the liquid inlet valve assembly is communicated with the liquid discharge valve assembly through the liquid discharge through hole, one end of the valve body is provided with a horn-shaped opening which is hermetically connected with the liquid inlet valve assembly, and the other end of the valve body is provided with a horn; the liquid inlet valve assembly comprises a liquid inlet valve core and a liquid inlet spring, and the liquid inlet valve core is fixedly connected with the liquid inlet spring; the liquid discharge valve assembly comprises a liquid discharge valve core, a liquid discharge spring and a liquid discharge cover, a columnar protruding portion is arranged on the end face of the liquid discharge end of the liquid discharge valve core, the liquid discharge spring is sleeved on the outer side of the columnar protruding portion, the liquid discharge spring is connected with the liquid discharge cover, the liquid discharge cover is in threaded connection with the valve body, and a liquid discharge channel is arranged on the liquid discharge cover.

According to the technical scheme, the valve plate is omitted, the conical valve core assembly is used instead, compared with the prior art, the sealing surface is reduced, the movement resistance is reduced, the closing speed of the valve core is accelerated, and the sealing effect of the valve body and the valve core is obviously improved; meanwhile, the phenomenon that the liquid inlet valve core is subjected to water hammer is eliminated, and liquid enters the liquid discharging cavity through the liquid discharging through hole at the side position of the end face of the valve body after the pressure is increased and is discharged through the liquid discharging valve. This application can show the life who improves the integrative valve of combination, and the life is changed in the extension maintenance. In addition, compared with the replacement of pump heads, the pump head has the advantages of economic cost saving, small workload and convenient installation.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1A is a schematic structural diagram of an application scenario of the present application;

FIG. 1B is a schematic structural diagram of one embodiment of the present application;

FIG. 2 is a schematic structural diagram of another embodiment of the present application;

FIG. 3A is a schematic structural diagram of a valve body according to an embodiment of the present disclosure;

FIG. 3B is a schematic view of the cross-sectional structure A-A of FIG. 3A;

FIG. 4A is a schematic diagram of a drain valve core according to an embodiment of the present disclosure;

FIG. 4B is a schematic view of the angled blade of FIG. 4A;

fig. 5A is a schematic diagram of a liquid inlet valve core according to an embodiment of the present application;

FIG. 5B is a schematic view of the angled blade of FIG. 5A;

FIG. 6 is a schematic view of a polyurethane pad structure according to an embodiment of the present application;

FIG. 7A is a schematic view of an end structure of a drainage cover according to an embodiment of the present disclosure;

fig. 7B is a schematic structural view of the liquid discharge cover according to the embodiment of the present application.

Illustration of the drawings:

the liquid inlet valve comprises a valve body 1, a liquid inlet through hole 11, a liquid outlet through hole 12, a liquid inlet valve component 2, a liquid inlet valve core 21, a liquid inlet spring 22, a liquid inlet polyurethane cushion 23, a liquid inlet blade 24, a liquid outlet valve component 3, a liquid outlet valve core 31, a liquid outlet spring 32, a liquid outlet cover 33, a liquid outlet polyurethane cushion 34, a liquid outlet blade 35, a thrust bearing 36 and a bearing ring sheet 37.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.

Referring to fig. 1A, a schematic structural diagram of an application scenario of the present application is shown to facilitate understanding of the technical solutions of the following embodiments.

The application provides a combined integrated valve of a plunger type reciprocating pump, which comprises a valve body 1, a liquid inlet valve component 2 and a liquid outlet valve component 3;

the outer side wall of the valve body 1 is provided with a liquid inlet through hole 11, the liquid inlet valve component 2 is communicated with a liquid inlet pipeline through the liquid inlet through hole 11, the end surface of the valve body 1 close to the liquid inlet valve component 2 is provided with a liquid discharge through hole 12, the liquid inlet valve component 2 is communicated with the liquid discharge valve component 3 through the liquid discharge through hole 12, one end of the valve body 1 is provided with a horn-shaped opening hermetically connected with the liquid inlet valve component 2, and the other end of the valve body 1 is provided with a horn-shaped opening hermetically connected with the liquid discharge valve component 3;

the liquid inlet valve assembly 2 comprises a liquid inlet valve core 21 and a liquid inlet spring 22, and the liquid inlet valve core 21 is fixedly connected with the liquid inlet spring 22;

the liquid discharge valve component 3 comprises a liquid discharge valve core 31, a liquid discharge spring 32 and a liquid discharge cover 33, a columnar protruding portion is arranged on the end face of the liquid discharge end of the liquid discharge valve core 31, the liquid discharge spring 32 is sleeved on the outer side of the columnar protruding portion, the liquid discharge spring 32 is connected with the liquid discharge cover 33, the liquid discharge cover 33 is in threaded connection with the valve body 1, and a liquid discharge channel is arranged on the liquid discharge cover 33.

Referring to fig. 1B, which is a schematic structural diagram of an embodiment of the present application, and referring to fig. 3A and 3B, in the present embodiment, a specific configuration of a combined integral valve of a plunger type reciprocating pump is improved: firstly, the opening position of a liquid inlet is improved, the existing commonly existing central liquid inlet is improved to feed liquid from the side wall of a valve body 1, the original liquid inlet channel is further changed, and the peripheral liquid inlet channel is changed into the central liquid inlet channel of a liquid inlet valve core 21; the position of the liquid discharge through hole 12 is improved, the liquid discharge through hole 12 is arranged at the side position of the end surface of the valve body 1 surrounding the liquid inlet valve core 21, and the phenomena of untight closing of the liquid inlet valve core 21, puncture damage of the valve plate and the valve body 1 and corrosion failure are effectively eliminated.

In the embodiment, the end faces of the valve body 1, the liquid inlet valve core 21 and the liquid discharge valve core 31 which are in sealing connection are arranged in a horn shape, so that the sealing surface is reduced, the movement resistance is correspondingly reduced, the closing and opening and closing speeds of the valve cores are accelerated, and the sealing effect of the valve body 1 and the valve cores is obviously improved; meanwhile, the phenomenon that the liquid inlet valve core 21 and the liquid outlet valve core 31 are subjected to water hammer is eliminated.

Optionally, the inner end surface of the liquid inlet valve core 21 is provided with liquid inlet blades 24, the inner end surface of the liquid discharge valve core 31 is provided with liquid discharge blades 35, and the liquid inlet blades 24 and the liquid discharge blades 35 are arranged in an inclined manner.

Referring to fig. 2, 4A, 4B, 5A and 5B, which are schematic structural views of another embodiment of the present disclosure, in this embodiment, inclined blades are disposed on inner end surfaces of the liquid inlet valve core 21 and the liquid discharge valve core 31, when a fluid passes through, the power of the fluid rotates the liquid inlet valve core 21 and the liquid discharge valve core 31, so that impact damage of the fluid on the valve cores can be effectively reduced, the service lives of the liquid inlet valve core 21 and the liquid discharge valve core 31 can be prolonged,

optionally, be provided with the depressed part that links to each other with the feed liquor pipeline on the lateral wall of valve body 1, the opening setting of feed liquor through-hole 11 is in on the bottom surface of depressed part.

Referring to fig. 2 and 3A, in this embodiment, in order to connect pipes conveniently in the process, a concave portion connected to the liquid inlet pipe is provided on the outer side wall of the valve body 1, and the opening of the liquid inlet through hole 11 is provided on the bottom surface of the concave portion. Because the integrative valve of the combination of plunger type reciprocating pump of this application when the installation, need with the integrative valve of combination installation to the pump line of plunger type reciprocating pump, owing to belong to airtight laminating formula installation, the lateral wall of the integrative valve of combination closely laminates with the pump line inner wall of plunger type reciprocating pump, for making things convenient for the feed liquor pipeline to the integrative valve transport fluid of the combination of the plunger type reciprocating pump of this application, set up the depressed part, do not laminate with the inner wall of pump line, set up the tee bend export again, can realize providing the fluid to the integrative valve of the combination of plunger type reciprocating pump.

Optionally, the liquid discharge cover 33 is provided with a hollow sidewall.

Referring to fig. 7A and 7B, in the present embodiment, the liquid discharge cover 33 is provided with a hollowed-out side wall, which is beneficial to radial multi-directional liquid discharge during liquid discharge, and enlarges the liquid discharge channel, thereby reducing the impact force on the liquid discharge valve core 31 and prolonging the service life and the replacement cycle of the liquid discharge valve core 31.

Optionally, the liquid inlet valve assembly 2 further includes a liquid inlet polyurethane pad 23, a liquid inlet recessed portion is arranged on a sealing contact surface of the liquid inlet valve core 21, and the liquid inlet polyurethane pad 23 is nested on the liquid inlet recessed portion;

the drain valve assembly 3 further comprises a drain polyurethane pad 34, a drain concave part is arranged on the sealing contact surface of the drain valve core 31, and the drain polyurethane pad 34 is nested on the drain concave part.

Referring to fig. 2 and 6, in this embodiment, set up feed liquor depressed part and flowing back depressed part and all be for the installation polyurethane pad, feed liquor depressed part and flowing back depressed part hold the polyurethane pad, play the effect of supporting, fixed polyurethane pad, have reduced the impact of liquid and solid particle to the polyurethane pad to guarantee the intensity of valve block subassembly. The outer end face of the polyurethane cushion is in contact with the conical surface of the valve body 1 to form a sealing surface, so that the impact of the metal valve plate is reduced, and the service life of the valve plate assembly is effectively prolonged.

Optionally, the trumpet-shaped openings of the valve body 1 are all set to be 45 degrees, the sealing contact surface of the liquid inlet valve core 21 is set to be 45 degrees, and the sealing contact surface of the liquid outlet valve core 31 is set to be 45 degrees.

Referring to fig. 3A, fig. 4A and fig. 5A, in the present embodiment, the sealing contact surfaces of the valve body 1, the liquid inlet valve core 21 and the liquid discharge valve core 31 are all set to 45 degrees, which is convenient for manufacturing process and forming industrial product standardization; on the other hand, the setting at 45 degrees angle is favorable to reducing impact and the damage to valve body 1, feed liquor case 21 and flowing back case 31, prolongs the life of valve body 1, feed liquor case 21 and flowing back case 31, promotes the result of use.

Optionally, a thrust bearing 36 and a bearing ring piece 37 are arranged on the liquid discharge end face of the liquid discharge valve core 31, and one end of the liquid discharge spring 32 is rotatably connected with the thrust bearing 36 through the bearing ring piece 37.

Referring to fig. 2 and 4A, in the present embodiment, in order to enable the drain valve core 31 to rotate under the fluid pressure and overcome a smaller rotation resistance, a thrust bearing 36 is provided, on one hand, the thrust bearing 36 transmits the fluid pressure to a bearing ring sheet 37, and the bearing ring sheet 37 transmits the fluid pressure to the drain spring 32, so that the drain valve core 31 is opened and closed; on the other hand, the liquid discharge valve core 31 overcomes smaller resistance, and the rotation effect is better.

Optionally, one end of the liquid inlet spring 22 is further provided with a radial rotating roller, and the liquid inlet spring 22 radially rotates in the pipeline through the radial rotating roller.

In this embodiment, since the combined integral valve of the plunger type reciprocating pump of the present application needs to be installed in the pump pipe, there are at least two setting methods for the liquid inlet spring 22: firstly, fix feed liquor spring 22's one end in the pump line, but feed liquor spring 22 will be unable rotatory, another kind is the method of this embodiment promptly, one end at feed liquor spring 22 sets up radial rotatory gyro wheel, set up gyro wheel fixed ring shape spout in the pump line supporting ground, make radial rotatory gyro wheel only do radial rotation and can not follow pump line axial displacement, the holding power that can provide feed liquor case 21 makes feed liquor case 21 can open and shut, it is rotatory at the in-process that opens and shuts to make feed liquor case 21 again, weaken the impact and the damage to feed liquor case 21.

Optionally, the feed liquor through-hole 11 sets up to 6, the feed liquor through-hole 11 evenly sets up on the radial outer wall of valve body 1, flowing back through-hole 12 sets up to 6, flowing back through-hole 12 evenly sets up valve body 1 is close to on the terminal surface of feed liquor case 21.

Referring to fig. 3A and 3B, in this embodiment, the liquid inlet through holes 11 and the liquid discharge through holes 12 are arranged in 6 and are uniformly arranged, so that the process manufacturing is facilitated, the liquid inlet and discharge flow rates are increased, and the fluid pumping efficiency is higher.

Alternatively, the valve body 1 is provided in a cylindrical shape.

In this embodiment, set up valve body 1 into cylindrical, be favorable to production and installation on the technology, strengthen the actual use effect of this application.

The combined integrated valve of the plunger type reciprocating pump comprises a valve body 1, a liquid inlet valve component 2 and a liquid outlet valve component 3; the outer side wall of the valve body 1 is provided with a liquid inlet through hole 11, the liquid inlet valve assembly 2 is communicated with a liquid inlet pipeline through the liquid inlet through hole 11, the end surface of the valve body 1 close to the liquid inlet valve assembly 2 is provided with a liquid outlet through hole 12, the liquid inlet valve assembly 2 is communicated with the liquid outlet valve assembly 3 through the liquid outlet through hole 12, one end of the valve body 1 is provided with a horn-shaped opening hermetically connected with the liquid inlet valve assembly 2, and the other end of the valve body 1 is provided with a horn-shaped opening hermetically connected with the liquid; the liquid inlet valve assembly 2 comprises a liquid inlet valve core 21 and a liquid inlet spring 22, and the liquid inlet valve core 21 is fixedly connected with the liquid inlet spring 22; the liquid discharge valve component 3 comprises a liquid discharge valve core 31, a liquid discharge spring 32 and a liquid discharge cover 33, a columnar protruding part is arranged on the end face of the liquid discharge end of the liquid discharge valve core 31, the liquid discharge spring 32 is sleeved on the outer side of the columnar protruding part, the liquid discharge spring 32 is connected with the liquid discharge cover 33, the liquid discharge cover 33 is in threaded connection with the valve body 1, and a liquid discharge channel is arranged on the liquid discharge cover 33.

According to the technical scheme, the valve plate is omitted, the conical valve core assembly is used instead, compared with the prior art, the sealing surface is reduced, the movement resistance is reduced, the closing speed of the valve core is accelerated, and the sealing effect of the valve body 1 and the valve core is obviously improved; meanwhile, the phenomenon that the liquid inlet valve core 21 is subjected to water hammer is eliminated, and liquid enters the liquid discharging cavity through the liquid discharging through hole 12 at the side position of the end face of the valve body 1 after the pressure is increased and is discharged through the liquid discharging valve. This application can show the life who improves the integrative valve of combination, and the life is changed in the extension maintenance. In addition, compared with the replacement of pump heads, the pump head has the advantages of economic cost saving, small workload and convenient installation.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims (10)

1. A combined integrated valve of a plunger type reciprocating pump is characterized by comprising a valve body (1), a liquid inlet valve component (2) and a liquid outlet valve component (3);

the liquid inlet valve is characterized in that a liquid inlet through hole (11) is formed in the outer side wall of the valve body (1), the liquid inlet valve component (2) is communicated with a liquid inlet pipeline through the liquid inlet through hole (11), a liquid discharge through hole (12) is formed in the end face, close to the liquid inlet valve component (2), of the valve body (1), the liquid inlet valve component (2) is communicated with the liquid discharge valve component (3) through the liquid discharge through hole (12), a horn-shaped opening in sealing connection with the liquid inlet valve component (2) is formed in one end of the valve body (1), and a horn-shaped opening in sealing connection with the liquid discharge valve component (3) is formed in the other end of the valve body;

the liquid inlet valve assembly (2) comprises a liquid inlet valve core (21) and a liquid inlet spring (22), and the liquid inlet valve core (21) is fixedly connected with the liquid inlet spring (22);

the liquid drainage valve assembly (3) comprises a liquid drainage valve core (31), a liquid drainage spring (32) and a liquid drainage cover (33), a columnar protruding part is arranged on the end face of one liquid drainage end of the liquid drainage valve core (31), the liquid drainage spring (32) is sleeved on the outer side of the columnar protruding part, the liquid drainage spring (32) is connected with the liquid drainage cover (33), the liquid drainage cover (33) is in threaded connection with the valve body (1), and a liquid drainage channel is arranged on the liquid drainage cover (33).

2. A combined integral valve of plunger type reciprocating pump according to claim 1, characterized in that the inner end face of the liquid inlet valve core (21) is provided with liquid inlet vanes (24), the inner end face of the liquid discharge valve core (31) is provided with liquid discharge vanes (35), and the liquid inlet vanes (24) and the liquid discharge vanes (35) are obliquely arranged.

3. Plunger type reciprocating pump combined one-piece valve according to claim 1, characterized in that the valve body (1) is provided on its outer side wall with a recess connected to the inlet channel, and the opening of the inlet through hole (11) is provided on the bottom surface of the recess.

4. A combined integral valve for a plunger-type reciprocating pump according to claim 1, characterized in that the drain cover (33) is provided with hollowed out side walls.

5. The combined integral valve of a plunger type reciprocating pump as claimed in claim 1, wherein the liquid inlet valve component (2) further comprises a liquid inlet polyurethane gasket (23), a liquid inlet concave part is arranged on the sealing contact surface of the liquid inlet valve core (21), and the liquid inlet polyurethane gasket (23) is nested on the liquid inlet concave part;

the liquid discharge valve assembly (3) further comprises a liquid discharge polyurethane pad (34), a liquid discharge concave part is arranged on the sealing contact surface of the liquid discharge valve core (31), and the liquid discharge polyurethane pad (34) is nested on the liquid discharge concave part.

6. A combined integral valve for plunger type reciprocating pump according to claim 1 characterized in that the trumpet shaped openings of the valve body (1) are all set to 45 degrees, the sealing contact surface of the liquid inlet spool (21) is set to 45 degrees and the sealing contact surface of the liquid outlet spool (31) is set to 45 degrees.

7. A combined integral valve of a plunger type reciprocating pump according to claim 1, characterized in that a thrust bearing (36) and a bearing ring sheet (37) are arranged on the liquid discharge end face of the liquid discharge spool (31), and one end of the liquid discharge spring (32) is rotatably connected with the thrust bearing (36) through the bearing ring sheet (37).

8. A combined integral valve for plunger type reciprocating pump according to claim 1, characterized in that one end of the liquid inlet spring (22) is further provided with a radial rotating roller, by which the liquid inlet spring (22) is radially rotated in the pipe.

9. A combined integral valve of plunger type reciprocating pump according to claim 1, characterized in that the liquid inlet through holes (11) are arranged in 6, the liquid inlet through holes (11) are uniformly arranged on the radial outer wall of the valve body (1), the liquid discharge through holes (12) are arranged in 6, and the liquid discharge through holes (12) are uniformly arranged on the end surface of the valve body (1) close to the liquid inlet valve core (21).

10. A combined one-piece valve for a plunger-type reciprocating pump according to claim 1, characterized in that the valve body (1) is arranged in a cylindrical shape.

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