CN220036920U - Emulsion pump parallel structure fluid end - Google Patents

Abstract

The utility model relates to a fluid end of an emulsion pump parallel structure, which comprises a pump head body, wherein one side of the pump head body connected with a power end is provided with a large-volume pressure cavity corresponding to a plunger, and the other side of the pump head body is provided with a fluid end air vent; the pump head body comprises a liquid inlet valve group and a liquid outlet valve group, and the liquid inlet valve group and the liquid outlet valve group are arranged in the pump head body in a parallel structure. The hydraulic end adopts a parallel structure, the hydraulic end liquid inlet valve bank and the liquid outlet valve bank are arranged in parallel, the structure is simple, the functions of the liquid inlet valve bank and the liquid outlet valve bank are clear, the faults can be independently removed when the hydraulic end meets the faults, and the hydraulic end liquid inlet valve bank and the liquid outlet valve bank are more convenient to maintain and assemble.

Description

Emulsion pump parallel structure fluid end

Technical Field

The utility model relates to the technical field of emulsion pumps in coal mines, in particular to a hydraulic end with an emulsion pump parallel structure.

Background

The emulsion pump is used for producing a heart in a coal mine underground in a fully-mechanized mining face hydraulic system, and comprises a hydraulic support system and a liquid supply system, wherein the hydraulic support is used for cutting coal with a coal mining machine and moving along with the coal in time so as to ensure that a roof of the working face supports a coal bed and is normally propelled; the liquid supply system provides power for the hydraulic support, and the main core equipment is an emulsion pump. The emulsion pump comprises a power end and a hydraulic end. Because the emulsion pump is used for the coal face and provides hydraulic power for the hydraulic support, the continuous working time is long, and the reliability requirement on parts of the emulsion pump is high. In the existing emulsion pump, the hydraulic end part is most likely to generate a fatigue part in the coal mine production process, the frequency of replacing spare parts is high, for example, when a spring in the hydraulic end is broken, a valve core and a valve seat are worn, the hydraulic end part needs to be replaced, the labor intensity is high when the hydraulic end part is replaced in a limited working environment, the existing hydraulic end part is difficult to disassemble and assemble, and the time and the cost for maintenance are high.

A fluid end is disclosed in patent CN104747430a, comprising: the valve body is provided with a plunger cavity and a suction-discharge liquid valve cavity, and the plunger cavity is communicated with the suction-discharge liquid valve cavity; the cylinder sleeve is positioned in the suction and discharge liquid valve cavity, and a suction and discharge liquid valve assembly is arranged in the cylinder sleeve; a stuffing box assembly located in the plunger cavity of the valve body, the stuffing box assembly comprising a stuffing box body; the plunger, the one end of plunger is located in the packing box body, the other end of plunger with the transmission shaft of emulsion pump is connected, the transmission shaft rotates to drive the plunger is in the reciprocating motion is carried out in the packing box body. Accordingly, an emulsion pump is also provided. The hydraulic end structure is optimized, so that the hydraulic end is convenient to maintain, disassemble, assemble and maintain, the hydraulic end is stable in work and low in failure rate, and the product performance of the hydraulic end is effectively improved through the selection of new structural materials, so that the service life of the hydraulic end is prolonged. There is also patent CN213574494U that proposes an improved generation emulsion pump, including organism and wear to establish the central pivot on the organism, the interval is fixed with a plurality of eccentric wheel in the central pivot, wear to be equipped with a plurality of and the perpendicular horizontal chamber of central pivot on the organism, every horizontal intracavity is all worn to be equipped with the plunger, the first end of plunger passes through the connecting pin and connects on the eccentric wheel, be equipped with on the organism with horizontal coaxial ladder pore canal of penetrating of chamber, the ladder pore canal is kept away from the fixed imbibition case that is equipped with in one end of horizontal chamber, still be equipped with the vertical pore canal of penetrating of perpendicular to ladder pore canal on the organism, the one end that vertical pore canal was kept away from the ladder pore canal is fixed and is equipped with the flowing back case. The suction valve of the right-angle hydraulic end is perpendicular to the axis of the discharge valve, so that the valve is convenient to assemble, disassemble, replace and overhaul, and the residual volume ratio is small and the utilization rate is increased when the hydraulic end is converted from liquid suction work to liquid discharge work. However, the fluid end is divided into two parts, namely a lower fluid inlet part and an upper fluid outlet part. If the lower liquid inlet part fails during operation, the lower thread bush needs to be disassembled. In extreme environments, disassembly is very difficult.

In summary, the hydraulic end used in the existing emulsion pump is mainly composed of an upper part and a lower part, the lower part liquid inlet part and the upper part liquid outlet part adopt a screw fixing structure, the disassembly and assembly are inconvenient, in the underground limiting environment of a coal mine, once the hydraulic end appears in a humid environment, screw threads cannot be normally opened, the maintenance is very difficult, and the equipment failure rate is high. Therefore, how to solve the problems of complex structure, inconvenient disassembly and assembly, difficult maintenance, failure rate reduction and the like of the hydraulic end of the emulsion pump has great significance for the technical development in the field.

Disclosure of Invention

Therefore, the utility model provides the following technical scheme:

the side-by-side structure hydraulic end of the emulsion pump comprises a pump head body, wherein one side of the pump head body connected with the power end is provided with a large-volume pressure cavity corresponding to the plunger, and the other side of the pump head body is provided with a hydraulic end air vent; the pump head body comprises a liquid inlet valve group and a liquid outlet valve group, and the liquid inlet valve group and the liquid outlet valve group are arranged in the pump head body in a parallel structure.

The liquid inlet valve group comprises a liquid inlet valve assembly and a liquid inlet valve positioning cylinder, and the liquid inlet valve positioning cylinder is arranged at the upper part of the liquid inlet valve assembly; the liquid inlet valve assembly comprises a liquid inlet valve core, a liquid inlet valve seat, a liquid inlet valve spring, a liquid inlet valve positioning sleeve and a liquid inlet valve semicircular clamping ring, the liquid inlet valve core is arranged on the liquid inlet valve seat, one end of the liquid inlet valve spring is connected with the liquid inlet valve seat, the other end of the liquid inlet valve spring is connected with the liquid inlet valve positioning sleeve, and the liquid inlet valve positioning sleeve and the liquid inlet valve semicircular clamping ring are sequentially arranged at the lower end of the liquid inlet valve core.

Preferably, the first sealing element is arranged on two sides of the liquid inlet valve seat, and the liquid inlet valve core is a valve core with a conical umbrella-shaped structure.

The liquid inlet valve group further comprises a liquid suction valve sleeve, the liquid suction valve sleeve is arranged at the upper end of the liquid inlet valve assembly, and a liquid inlet valve cover is arranged on the liquid suction valve sleeve.

The liquid draining valve group comprises a liquid draining valve assembly and a liquid draining valve positioning cylinder, and the liquid draining valve positioning cylinder is arranged at the upper end of the liquid draining valve assembly; the liquid draining valve assembly comprises a liquid draining valve core, a liquid draining valve seat, a liquid draining valve spring, a liquid draining valve positioning sleeve and a liquid draining valve semicircular clamping ring, the liquid draining valve core is arranged on the liquid draining valve seat, one end of the liquid draining valve spring is connected with the liquid draining valve seat, the other end of the liquid draining valve spring is connected with the liquid draining valve positioning sleeve, and the liquid draining valve positioning sleeve and the liquid draining valve semicircular clamping ring are sequentially arranged at the lower end of the liquid draining valve core.

Preferably, the drain valve group further comprises a drain valve sleeve, and the drain valve sleeve is arranged at the upper end of the drain valve assembly and is connected with the drain valve seat; the liquid discharge valve sleeve is provided with a liquid discharge valve cover.

Preferably, two sides of the liquid discharge valve seat are provided with sealing elements II; the liquid draining valve core is a valve core with a conical umbrella-shaped structure.

Preferably, through power transmission of the power end, the plunger reciprocates in the large-volume pressure cavity, and a sealing assembly is arranged between the plunger and the large-volume pressure cavity and is adjustable.

Preferably, the bottom of the hydraulic end is provided with a liquid inlet box to form a large-volume liquid inlet cavity.

The utility model has at least one of the following advantages:

1) The hydraulic end with the emulsion pump parallel structure has the advantages that the hydraulic end liquid inlet valve group and the liquid outlet valve group are arranged in parallel, the structure is simple, the emulsion pump hydraulic end can be independently removed from faults when the faults are encountered, the emulsion pump hydraulic end can be directly detached in the maintenance process, the problem of inconvenience in disassembly and assembly is avoided, and the emulsion pump hydraulic end is convenient to work and use.

2) The valve core of the liquid inlet and outlet valve group of the hydraulic end adopts a conical umbrella-shaped structure, so that the flow area is large, and the opening and closing performance is good.

3) An adjustable plunger sealing component is arranged between the plunger and the pump head body, the sealing component is arranged in the pump head body, the disassembly and the assembly are convenient, the sealing performance is improved, and the service life is prolonged due to the adjustable design.

4) The liquid inlet box is arranged at the bottom of the hydraulic end to form a liquid inlet cavity with large volume, so that the volumetric efficiency is improved, and the suction is prevented.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the technical means of the present utility model, so that the present utility model may be practiced according to the teachings of the present specification, and so that the above-mentioned and other objects, features and advantages of the present utility model may be better understood, and the following detailed description of the preferred embodiments of the present utility model will be presented in conjunction with the accompanying drawings.

The above and other objects, advantages and features of the present utility model will become more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present utility model when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic illustration of a side-by-side hydraulic end of an emulsion pump of the present disclosure;

FIG. 2 is a schematic view of a valve assembly according to the present disclosure;

FIG. 3 is a schematic view of a drain valve assembly according to the present disclosure;

FIG. 4 is a schematic view of a liquid inlet box according to the present disclosure;

in the above figures: 1. a pump head body; 2. a liquid inlet valve assembly; 21. a liquid inlet valve core; 22. a liquid inlet valve seat; 221. a first sealing element; 23. a liquid inlet valve spring; 24. a liquid inlet valve positioning sleeve; 25. semicircular clamping ring of liquid inlet valve; 3. a drain valve assembly; 31. a liquid discharge valve core; 32. a liquid discharge valve seat; 321. a second sealing element; 33. a liquid discharge valve spring; 34. a liquid discharge valve positioning sleeve; 35. semicircular clamping ring of liquid discharge valve; 4. a liquid inlet valve positioning cylinder; 5. a liquid discharge valve positioning cylinder; 6. a liquid suction valve column; 61. a liquid inlet valve cover; 7. a liquid discharge valve sleeve; 71. a liquid discharge valve cover; 8. a plunger; 9. a fluid end bleed hole; 10. a liquid inlet box; 11. a large volume pressure chamber.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the utility model. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the utility model. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.

It is further noted that relational terms such as first and second, and the like are 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. Moreover, the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion.

Example 1

The embodiment introduces a schematic structural diagram of a fluid end with a parallel structure of an emulsion pump. Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural diagram of a parallel structure fluid end of an emulsion pump according to the present disclosure, fig. 2 is a schematic structural diagram of a liquid inlet valve assembly according to the present disclosure, and fig. 3 is a schematic structural diagram of a liquid outlet valve assembly according to the present disclosure.

The hydraulic end is connected with a power end, the hydraulic end comprises a pump head body 1, a large-volume pressure cavity 11 corresponding to a plunger 8 is arranged on one side, connected with the power end, of the pump head body 1, and a hydraulic end air bleed hole 9 is arranged on the other side of the pump head body 1; the pump head body 1 comprises a liquid inlet valve group and a liquid outlet valve group, and the liquid inlet valve group and the liquid outlet valve group are arranged in the pump head body 1 in a parallel structure.

The liquid inlet valve group comprises a liquid inlet valve assembly 2 and a liquid inlet valve positioning cylinder 4, and the liquid inlet valve positioning cylinder 4 is arranged at the upper part of the liquid inlet valve assembly 2; the feed liquor valve assembly 2 comprises a feed liquor valve core 21, a feed liquor valve seat 22, a feed liquor valve spring 23, a feed liquor valve positioning sleeve 24 and a feed liquor valve semicircular snap ring 25, wherein the feed liquor valve core 21 is arranged on the feed liquor valve seat 22, one end of the feed liquor valve spring 23 is connected with the feed liquor valve seat 22, the other end is connected with the feed liquor valve positioning sleeve 24, and the feed liquor valve positioning sleeve 24 and the feed liquor valve semicircular snap ring 25 are sequentially arranged at the lower end of the feed liquor valve core 21.

A first seal 221 is provided on both sides of the inlet valve seat 22.

The liquid inlet valve group further comprises a liquid suction valve sleeve 6, the liquid suction valve sleeve 6 is arranged at the upper end of the liquid inlet valve assembly 2, and a liquid inlet valve cover 61 is arranged on the liquid suction valve sleeve 6.

The liquid draining valve group comprises a liquid draining valve assembly 3 and a liquid draining valve positioning cylinder 5, and the liquid draining valve positioning cylinder 5 is arranged at the upper end of the liquid draining valve assembly 3; the liquid discharge valve assembly 3 comprises a liquid discharge valve core 31, a liquid discharge valve seat 32, a liquid discharge valve spring 33, a liquid discharge valve positioning sleeve 34 and a liquid discharge valve semicircular clamping ring 35, wherein the liquid discharge valve core 31 is arranged on the liquid discharge valve seat 32, one end of the liquid discharge valve spring 33 is connected with the liquid discharge valve seat 32, the other end of the liquid discharge valve spring 33 is connected with the liquid discharge valve positioning sleeve 34, and the liquid discharge valve positioning sleeve 34 and the liquid discharge valve semicircular clamping ring 35 are sequentially arranged at the lower end of the liquid discharge valve core 31. Two sealing elements 321 are arranged on two sides of the liquid draining valve seat 32.

The drainage valve group further comprises a drainage valve sleeve 7, and the drainage valve sleeve 7 is arranged at the upper end of the drainage valve assembly 3 and is connected with a drainage valve seat 32; the drain valve cover 71 is mounted on the drain valve sleeve 7.

In the utility model, the liquid inlet valve core 21 and the liquid outlet valve core 31 are both valve cores with conical umbrella structures, and compared with the condition that the equipment failure rate is higher due to the valve plate in the prior art, the valve core with the conical umbrella structure is large in overflow area and good in opening and closing performance, and the failure rate is reduced.

The parallel hydraulic end integrated linear structure is adopted, the liquid inlet and outlet valve has definite function, convenient disassembly and assembly and strong replaceability, and the service life of the emulsion pump is prolonged.

Example 2

The present utility model further describes the structure of the parallel structure fluid end on the basis of example 1. As shown in fig. 1, fig. 1 is a schematic structural diagram of a parallel structure fluid end of an emulsion pump of the present disclosure.

In the known emulsion pump power end and fluid end working principle, the power end is connected with the fluid end, the plunger 8 on one side of the power end is transmitted to the fluid end through the power of the power end, and the plunger 8 reciprocates in the oil pressure changing cavity on the corresponding side of the fluid end. The pump head body 1 of the hydraulic end is provided with the large-volume pressure cavity 11 at the side corresponding to the power end, when the plunger 8 of the power end extrudes hydraulic oil in the large-volume pressure cavity 11 under the action of transmission power, the contained oil is increased, the volumetric efficiency is high, and the power of the hydraulic end is greatly improved.

Example 3

The structure of the fluid end will be described in addition to examples 1 and 2.

And a sealing component is further arranged between the plunger 8 and the pressure cavity 11, the sealing component is adjustable, and in power transmission, the sealing performance in the pressure-changing cavity is good, and the disassembly and the assembly are convenient. The bottom of the fluid end is provided with a fluid inlet box 10 which forms a large-volume fluid inlet cavity, and in a certain preferred embodiment, a power end lubricating oil cooling device can be built in due to the large volume cavity of the fluid inlet box.

The specific working principle of the hydraulic end connecting the power end and the connection relation of each component in the present utility model are well known to those skilled in the art, so that repeated description is omitted.

The hydraulic end device has a simple integral structure, and the difficulty in maintaining and checking hydraulic end devices in a limit working environment is greatly solved.

The above description is only of the preferred embodiments of the present utility model and it is not intended to limit the scope of the present utility model, but various modifications and variations can be made by those skilled in the art. Variations, modifications, substitutions, integration and parameter changes may be made to these embodiments by conventional means or may be made to achieve the same functionality within the spirit and principles of the present utility model without departing from such principles and spirit of the utility model.

Claims (10)

1. The emulsion pump parallel structure hydraulic end is characterized by comprising a pump head body (1), wherein one side of the pump head body (1) connected with a power end is provided with a large-volume pressure cavity (11) corresponding to a plunger (8), and the other side of the pump head body (1) is provided with a hydraulic end air vent (9);

the pump head body (1) comprises a liquid inlet valve group and a liquid outlet valve group, and the liquid inlet valve group and the liquid outlet valve group are arranged in the pump head body (1) in a parallel structure.

2. The fluid end of an emulsion pump parallel structure according to claim 1, wherein the liquid inlet valve group comprises a liquid inlet valve assembly (2) and a liquid inlet valve positioning cylinder (4), and the liquid inlet valve positioning cylinder (4) is arranged at the upper part of the liquid inlet valve assembly (2);

the liquid inlet valve assembly (2) comprises a liquid inlet valve core (21), a liquid inlet valve seat (22), a liquid inlet valve spring (23), a liquid inlet valve positioning sleeve (24) and a liquid inlet valve semicircular clamping ring (25), the liquid inlet valve core (21) is arranged on the liquid inlet valve seat (22), one end of the liquid inlet valve spring (23) is connected with the liquid inlet valve seat (22), the other end of the liquid inlet valve spring is connected with the liquid inlet valve positioning sleeve (24), and the liquid inlet valve positioning sleeve (24) and the liquid inlet valve semicircular clamping ring (25) are sequentially arranged at the lower end of the liquid inlet valve core (21).

3. The fluid end with the emulsion pump parallel structure according to claim 2, wherein sealing elements I (221) are arranged on two sides of a fluid inlet valve seat (22), and the fluid inlet valve core (21) is a valve core with a conical umbrella-shaped structure.

4. The fluid end of an emulsion pump parallel structure according to claim 2, wherein the fluid inlet valve group further comprises a fluid suction valve sleeve (6), the fluid suction valve sleeve (6) is arranged at the upper end of the fluid inlet valve assembly (2), and a fluid inlet valve cover (61) is arranged on the fluid suction valve sleeve (6).

5. The fluid end of an emulsion pump parallel structure according to claim 1, wherein the drain valve group comprises a drain valve assembly (3) and a drain valve positioning cylinder (5), and the drain valve positioning cylinder (5) is arranged at the upper end of the drain valve assembly (3);

the liquid draining valve assembly (3) comprises a liquid draining valve core (31), a liquid draining valve seat (32), a liquid draining valve spring (33), a liquid draining valve positioning sleeve (34) and a liquid draining valve semicircular clamping ring (35), wherein the liquid draining valve core (31) is arranged on the liquid draining valve seat (32), one end of the liquid draining valve spring (33) is connected with the liquid draining valve seat (32), the other end of the liquid draining valve spring is connected with the liquid draining valve positioning sleeve (34), and the liquid draining valve positioning sleeve (34) and the liquid draining valve semicircular clamping ring (35) are sequentially arranged at the lower end of the liquid draining valve core (31).

6. The fluid end of an emulsion pump parallel structure according to claim 1 or 5, wherein the drainage valve group further comprises a drainage valve sleeve (7), and the drainage valve sleeve (7) is arranged at the upper end of the drainage valve assembly (3) and is connected with a drainage valve seat (32); a liquid discharge valve cover (71) is arranged on the liquid discharge valve sleeve (7).

7. The fluid end with the emulsion pump parallel structure according to claim 5, wherein two sides of the liquid discharge valve seat (32) are provided with sealing elements II (321); the liquid draining valve core (31) is a valve core with a conical umbrella-shaped structure.

8. A fluid end of a side-by-side structure of an emulsion pump according to claim 1, characterized in that the plunger (8) reciprocates in the large-volume pressure chamber (11) through power transmission of the power end, and a sealing assembly is arranged between the plunger (8) and the large-volume pressure chamber (11).

9. The fluid side-by-side emulsion pump fluid end of claim 8 wherein said seal assembly is adjustable.

10. The fluid end with the emulsion pump parallel structure according to claim 1, wherein a fluid inlet box (10) is arranged at the bottom of the fluid end to form a large-volume fluid inlet cavity.