High-pressure pump power end structure

Abstract

The utility model discloses a power end structure of a high-pressure pump, which comprises a crankcase provided with a pump head component and a transmission component. The crank case comprises a lower case body and an upper case body, the upper case body is detachably arranged on the lower case body, the pump head assembly is arranged on the lower case body, and the transmission assembly is arranged between the lower case body and the upper case body; the lower box body comprises a lower box shell, the pump head assembly is installed in an inner cavity of the lower box shell, a through hole allowing a pump head of the pump head assembly to penetrate through is formed in one side of the lower box shell, and a first inclined face is arranged on the side, facing the upper box body, of the lower box shell. The lower box body is formed by the lower box body and the upper box body, when the transmission assembly is installed, the transmission assembly can be directly installed on the lower box body firstly, then the upper box body and the lower box body are connected and fixed, and the assembling operation of the crankcase and the transmission assembly can be completed; according to the high-pressure pump power end structure, the crankcase is arranged in a split mode, so that assembling operation of the crankcase and the transmission assembly is more convenient and labor-saving, and the assembling efficiency of the high-pressure pump power end structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure pump technology, and in particular to a power end structure of a high-pressure pump. Background Technology

[0002] High-pressure pumps are devices that provide high-pressure power for high-pressure jet grouting cement slurry. They are used for foundation reinforcement in buildings, highways, and other applications. They can also be used for high-pressure water jetting to assist in rock breaking and coal extraction, supplying fluid to underground hydraulic supports, pumping high-pressure water into hydraulically expandable metal anchor bolts, and dredging and cleaning large underground pipelines.

[0003] High-pressure pumps mainly consist of a power end and a hydraulic end. The power end is used to transfer the energy of the prime mover to the hydraulic end, while the hydraulic end is used to convert mechanical energy into liquid pressure energy. Its working principle relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber, thereby achieving the intake and compression of the medium. It has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment.

[0004] like Figure 3 As shown, the crankcase of the existing high-pressure pump power end is an integral structure. When installing the crankshaft, it is necessary to tilt the crankshaft at a certain angle before it can be put into the housing, which makes the assembly difficult and results in low installation efficiency and long installation time.

[0005] Therefore, a high-pressure pump power end structure is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a high-pressure pump power end structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A high-pressure pump power end structure, comprising:

[0009] The crankcase houses the pump head assembly and the transmission assembly, wherein:

[0010] The crankcase includes a lower housing and an upper housing. The upper housing is detachably mounted on the lower housing. The pump head assembly is mounted on the lower housing. The transmission assembly is located between the lower housing and the upper housing.

[0011] The lower housing includes a lower housing shell, the pump head assembly is installed in the inner cavity of the lower housing shell, and a through hole is provided on one side of the lower housing shell for the pump head of the pump head assembly to pass through. The lower housing shell has a first inclined surface on the side facing the upper housing.

[0012] The upper housing includes an upper housing shell, and a cavity is formed between the upper housing shell and the lower housing shell. The upper housing shell has a second inclined surface on the side facing the lower housing shell, which has the same inclination angle as the first inclined surface. The first inclined surface and the second inclined surface are in contact. The lower housing shell and the upper housing shell are provided with a bearing hole for the end of the transmission assembly to pass through.

[0013] As a preferred technical solution, the lower housing further includes a lower through hole A and a lower through hole B. The lower through hole A and the lower through hole B are respectively provided on both sides of the lower housing, and the centers of the lower through holes A and B are on the same plane as the first inclined surface.

[0014] As a preferred technical solution, the upper housing also includes an upper through hole A and an upper through hole B. The upper through hole B and the screw hole B are respectively provided on both sides of the upper housing. The centers of the upper through hole A and the upper through hole B are on the same plane as the second inclined surface.

[0015] As a preferred technical solution, the lower through hole A, the lower through hole B, the upper through hole A, and the upper through hole B are all connected to the cavity, and the diameters of the upper through hole A and the lower through hole A, and the upper through hole B and the lower through hole B are the same.

[0016] As a preferred technical solution, the upper through hole A and the lower through hole A are arranged in a corresponding manner, the upper through hole B and the lower through hole B are arranged in a corresponding manner, a first bearing hole is formed between the upper through hole A and the corresponding lower through hole A, and a second bearing hole is formed between the upper through hole B and the corresponding lower through hole B.

[0017] As a preferred technical solution, the horizontal line of the first inclined surface and the second inclined surface facing the through hole is higher than the horizontal line of the opposite side, and the axis of the first bearing hole is lower than the axis of the second bearing hole.

[0018] As a preferred technical solution, the lower housing is provided with a plurality of regularly distributed screw holes A, and a group of screw holes A is provided on the upper and lower parts of the first inclined surface, and a plurality of screw holes A are regularly distributed in each group. The upper housing is provided with screw holes B that are correspondingly provided with screw holes A.

[0019] As a preferred technical solution, the transmission assembly includes a crankshaft and a drive shaft disposed in a cavity. The two ends of the crankshaft pass through corresponding first bearing holes, and the two ends of the drive shaft pass through corresponding second bearing holes. The crankshaft and the drive shaft are connected by a reducer, and the crankshaft is connected to the pump head assembly.

[0020] This utility model has at least the following beneficial effects:

[0021] In this application, the lower housing is composed of a lower housing and an upper housing. When installing the transmission component, the transmission component can be directly installed on the lower housing first, and then the upper housing is connected and fixed to the lower housing to complete the assembly of the crankcase and the transmission component. The crankcase is set in a split configuration, which makes the assembly operation of the crankcase and the transmission component more convenient and labor-saving, thereby helping to improve the assembly efficiency of the power end structure of the high-pressure pump. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the existing technology.

[0025] In the diagram: 100, crankcase; 110, lower housing; 111, lower casing; 112, through hole; 113, lower through hole A; 114, lower through hole B; 115, screw hole A; 120, upper housing; 121, upper casing; 122, upper through hole A; 123, upper through hole B; 124, screw hole B; 200, pump head assembly; 300, transmission assembly; 310, crankshaft; 320, drive shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-2This utility model provides a high-pressure pump power end structure, including a crankcase 100, a pump head assembly 200, and a transmission assembly 300. Both the pump head assembly 200 and the transmission assembly 300 are mounted on the crankcase 100. The crankcase 100 includes a lower housing 110 and an upper housing 120, with the upper housing 120 detachably mounted on the lower housing 110. The pump head assembly 200 is mounted on the lower housing 110, and the transmission assembly 300 is located between the lower housing 110 and the upper housing 120. The lower housing 110 includes a lower casing 111, on which the pump head assembly 200 is mounted. The inner cavity of the housing 111, and a through hole 112 for the pump head of the pump head assembly 200 to pass through is provided on one side of the lower housing 111. The lower housing 111 has a first inclined surface on the side facing the upper housing 120. The upper housing 120 includes an upper housing 121, and a cavity is formed between the upper housing 121 and the lower housing 111. The upper housing 121 has a second inclined surface on the side facing the lower housing 111 with an inclination angle consistent with the first inclined surface. The first inclined surface contacts the second inclined surface. The lower housing 111 and the upper housing 121 have a bearing hole for the end of the transmission assembly 300 to pass through.

[0028] The lower housing 110 also includes a lower through hole A113 and a lower through hole B114. A lower through hole A113 and a lower through hole B114 are respectively provided on both sides of the lower housing 111. The centers of the lower through holes A113 and B114 are on the same plane as the first inclined surface.

[0029] The upper housing 120 also includes an upper through hole A122 and an upper through hole B123. An upper through hole B123 and a screw hole B124 are respectively provided on both sides of the upper housing 121. The centers of the upper through holes A122 and B123 are on the same plane as the second inclined surface.

[0030] The lower through hole A113, lower through hole B114, upper through hole A122, and upper through hole B123 are all connected to the cavity. The upper through hole A122 and the lower through hole A113, and the upper through hole B123 and the lower through hole B114 have the same diameter, so that after the upper box 120 and the lower box 110 are connected, the upper through hole A122 and the corresponding lower through hole A113, and the upper through hole B123 and the corresponding lower through hole B114 can form a complete circular hole.

[0031] The upper through hole A122 and the lower through hole A113 are respectively arranged in a corresponding manner, the upper through hole B123 and the lower through hole B114 are respectively arranged in a corresponding manner, the upper through hole A122 and the corresponding lower through hole A113 form a first bearing hole, and the upper through hole B123 and the corresponding lower through hole B114 form a second bearing hole.

[0032] Among them, the horizontal line of the first inclined surface and the second inclined surface facing the through hole 112 is higher than the horizontal line of the opposite side, and the axis of the first bearing hole is lower than the axis of the second bearing hole.

[0033] The lower housing 111 has multiple regularly distributed screw holes A115. Each set of screw holes A115 is located on the upper and lower parts of the first inclined surface, and each set of screw holes A115 has multiple screw holes in a regular distribution. The upper housing 121 has screw holes B124 that are correspondingly arranged to the screw holes A115. By placing the bolt in the screw hole B124 and screwing it in until the end of the bolt is screwed into the screw hole A115, the lower housing 110 and the upper housing 120 can be connected and fixed.

[0034] The transmission assembly 300 includes a crankshaft 310 and a transmission shaft 320 disposed in a cavity. The two ends of the crankshaft 310 pass through the corresponding first bearing holes, and the two ends of the transmission shaft 320 pass through the corresponding second bearing holes. The crankshaft 310 and the transmission shaft 320 are connected by a reducer, and the crankshaft 310 is connected to the pump head assembly 200.

[0035] The working principle of this utility model is as follows: the end of the crankshaft 310 is placed in the lower through hole A113, and the end of the transmission shaft 320 is placed in the lower through hole B114, so that the crankshaft 310 and the transmission shaft 320, and the crankshaft 310 and the pump head assembly 200 are respectively connected for transmission. Then, the upper housing 121 can be placed on the lower housing 111, so that the upper through hole A122 and the lower through hole A113, and the upper through hole B123 and the lower through hole B114 are aligned, until the first inclined surface contacts the second inclined surface. Finally, the bolt can be placed on the upper housing 121 and screwed in, so that the end of the bolt is screwed into the corresponding screw hole A115, thus completing the assembly operation of the crankcase 100 and the transmission assembly 300. The crankcase 100 adopts a split setting, which makes the assembly operation of the crankcase 100 and the transmission assembly 300 more convenient and labor-saving, thereby helping to improve the assembly efficiency of the power end structure of the high-pressure pump.

[0036] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure pump power end structure, characterized in that, include: A crankcase (100) is provided with a pump head assembly (200) and a transmission assembly (300), wherein: The crankcase (100) includes a lower housing (110) and an upper housing (120). The upper housing (120) is detachably mounted on the lower housing (110). The pump head assembly (200) is mounted on the lower housing (110). The transmission assembly (300) is located between the lower housing (110) and the upper housing (120). The lower housing (110) includes a lower housing shell (111), the pump head assembly (200) is installed in the inner cavity of the lower housing shell (111), and a through hole (112) for the pump head of the pump head assembly (200) to pass through is provided on one side of the lower housing shell (111), and a first inclined surface is provided on the side of the lower housing shell (111) facing the upper housing (120); The upper housing (120) includes an upper housing shell (121), and a cavity is formed between the upper housing shell (121) and the lower housing shell (111). The upper housing shell (121) has a second inclined surface on the side facing the lower housing shell (111) with the same inclination angle as the first inclined surface. The first inclined surface is in contact with the second inclined surface. The lower housing shell (111) and the upper housing shell (121) are provided with a bearing hole through which the end of the transmission assembly (300) passes.

2. The high-pressure pump power end structure according to claim 1, characterized in that: The lower housing (110) also includes a lower through hole A (113) and a lower through hole B (114). The lower through hole A (113) and the lower through hole B (114) are respectively provided on both sides of the lower housing (111). The centers of the lower through holes A (113) and B (114) are on the same plane as the first inclined surface.

3. The high-pressure pump power end structure according to claim 2, characterized in that: The upper housing (120) also includes an upper through hole A (122) and an upper through hole B (123). The upper through hole B (123) and the screw hole B (124) are respectively provided on both sides of the upper housing (121). The centers of the upper through holes A (122) and B (123) are on the same plane as the second inclined surface.

4. The high-pressure pump power end structure according to claim 3, characterized in that: The lower through hole A (113), lower through hole B (114), upper through hole A (122) and upper through hole B (123) are all connected to the cavity, and the diameters of the upper through hole A (122) and lower through hole A (113), and the upper through hole B (123) and lower through hole B (114) are the same.

5. The high-pressure pump power end structure according to claim 4, characterized in that: The upper through hole A (122) and the lower through hole A (113) are arranged in a corresponding manner, the upper through hole B (123) and the lower through hole B (114) are arranged in a corresponding manner, a first bearing hole is formed between the upper through hole A (122) and the corresponding lower through hole A (113), and a second bearing hole is formed between the upper through hole B (123) and the corresponding lower through hole B (114).

6. The high-pressure pump power end structure according to claim 5, characterized in that: The horizontal line of the first inclined surface and the second inclined surface facing the through hole (112) is higher than the horizontal line of the opposite side, and the axis of the first bearing hole is lower than the axis of the second bearing hole.

7. The high-pressure pump power end structure according to claim 1, characterized in that: The lower housing (111) has a plurality of regularly distributed screw holes A (115). The screw holes A (115) are provided in a group at the upper part and the lower part of the first inclined surface, and there are a plurality of screw holes A (115) in each group. The upper housing (121) has screw holes B (124) that are corresponding to the screw holes A (115).

8. The high-pressure pump power end structure according to claim 5, characterized in that: The transmission assembly (300) includes a crankshaft (310) and a drive shaft (320) disposed in a cavity. Both ends of the crankshaft (310) pass through corresponding first bearing holes, and both ends of the drive shaft (320) pass through corresponding second bearing holes. The crankshaft (310) and the drive shaft (320) are connected by a reducer. The crankshaft (310) is connected to the pump head assembly (200).

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