An integrated arcuate plunger pump housing

Abstract

The application relates to the technical field of plunger pump housings, in particular to a one-piece arc plunger pump housing which comprises the following: 1. the housing body is integrally connected with a concave arc part; 2. the housing body is provided with an oil passing channel, and the swash plate is provided with an oil groove, high-pressure oil flows into the oil passing channel and enters the oil groove to form oil support, thereby reducing abrasion; 3. the housing body is provided with a fourth drill hole, a fifth drill hole, a sixth drill hole and a profiling pipe, and after filling the oil groove, the high-pressure oil can flow into the fourth drill hole, the fifth drill hole and the profiling pipe and flow out, thereby providing oil cooling and taking away the heat of the profiling wear-resistant sheet; 4. the profiling pipe is provided with a brake part and an electromagnetic valve, when the electromagnetic valve is closed, the brake part extends and abuts against the rotating shaft of the plunger pump, thereby facilitating the disassembly and assembly of the plunger during maintenance, and the application has the advantages of one-piece arc, lower processing cost and convenient maintenance.

Description

Technical Field

[0001] This application relates to the field of plunger pump housing technology, and more specifically to a plunger pump housing with an integral arc track. Background Technology

[0002] A swashplate piston pump is an axial piston hydraulic pump that uses a swashplate with a fixed or adjustable angle to interact with multiple pistons evenly distributed along the pump axis. This interaction converts the rotational motion of the drive shaft into the reciprocating linear motion of the pistons, thereby periodically changing the volume of the sealed working chamber and achieving the functions of oil suction and oil pressure.

[0003] There is a housing for a swashplate piston pump, such as Figure 10 As shown, the device includes a housing body, an arc-shaped rocker seat 90, and a swashplate. The arc-shaped rocker seat 90 is fixedly mounted on the housing body. The end of the arc-shaped rocker seat 90 facing away from the housing body has a concave arc portion, and the end of the swashplate near the arc-shaped rocker seat 90 has a convex arc portion. The convex arc portion slides along the concave arc portion. However, because the arc-shaped rocker seat 90 and the housing body are separate designs, after the arc-shaped rocker seat 90 is assembled with the housing body, due to the thin wall of the arc-shaped rocker seat 90, it deforms significantly after heat treatment, resulting in unstable dimensions after precision machining and poor sealing of the bottom plane. After a period of use, the arc-shaped rocker of the variable displacement component mechanism adheres to the rocker seat, leading to poor volumetric efficiency and an inability to guarantee normal service life. Furthermore, when repairing or replacing the plunger of the plunger pump, the plunger pump shaft is unrestricted and will rotate during the replacement process, affecting maintenance work and reducing maintenance efficiency.

[0004] Therefore, there is a need for a plunger pump housing that features an integrated arc flow, lower processing costs, and easier maintenance. Summary of the Invention

[0005] The main objective of this application is to provide an integrated arc-shaped plunger pump housing, wherein the integrated arc-shaped plunger pump housing includes a housing body, a contoured wear-resistant plate, a swashplate, and a movable component. The housing body has a receiving cavity and a movable cavity. One end of the receiving cavity has two spaced-apart concave arc portions, and the receiving cavity communicates with the movable cavity. The contoured wear-resistant plate is detachably mounted on each of the concave arc portions. One end of the swashplate has a contact surface, and the other end of the swashplate has two spaced-apart convex arc portions. The movable component is movably disposed within the movable cavity, and the movable component is connected to a ball joint on one side of the swashplate. When the movable component moves, the convex arc portions of the swashplate slide along the contoured wear-resistant plate, causing the swashplate to swing. By integrating the concave arc portions with the housing body, the advantages of an integrated arc-shaped design and lower processing costs are achieved.

[0006] Another objective of this application is to provide an integral arc-shaped plunger pump housing, wherein the housing body has two oil passages, the swash plate has an oil groove on the side near the conformal wear-resistant plate, the oil passages communicate with the oil groove, one end of the housing body with the concave arc portion also has a bearing hole and a sealing hole, the bearing hole near the sealing hole has an internal groove on the hole wall, the integral arc-shaped plunger pump housing further includes two fourth drill holes, two fifth drill holes, two sixth drill holes and a conformal tube, the fourth drill holes communicate with the oil passages, the fifth drill holes... The hole is connected to the fourth drill hole, and the sixth drill hole is connected to the inner groove. The conformal tube includes a curved section and two insertion sections. The two insertion sections extend into the corresponding sixth drill hole, and the curved section extends into the inner groove. Both ends of the curved section are connected to the corresponding fifth drill hole. A second plug is provided at one end of the fourth drill hole. A normally closed one-way valve is provided at the connection between the fourth drill hole and the oil passage. After the high-pressure oil fills the oil groove, the normally closed one-way valve can be opened and enter the fourth and fifth drill holes, flow into the conformal tube, and flow out from the insertion section to provide heat dissipation.

[0007] Another objective of this application is to provide an integral arc-shaped plunger pump housing, wherein a bearing is fixedly installed in the bearing hole, the inner groove and the contour tube are both located at the end of the bearing near the sealing hole, each of the insertion parts is provided with a solenoid valve, the contour tube also has an extension, and a braking element is raised and lowered on the extension, one end of the braking element extending out of the extension, so that the solenoid valve can be closed during maintenance, causing the braking element to abut against the plunger pump shaft to prevent it from rotating.

[0008] To achieve at least one of the above-mentioned inventive objectives, this application provides a one-piece arc-track plunger pump housing, wherein the one-piece arc-track plunger pump housing comprises: The outer shell body has a receiving cavity and a moving cavity. One end of the receiving cavity has two spaced concave arc portions, and the receiving cavity is in communication with the moving cavity. The contoured wear-resistant sheet is detachably mounted on each of the concave arc portions; A swash plate, one end of which has a contact surface and the other end of which has two spaced-apart convex arc portions; A movable component is movably disposed within the movable cavity and is connected to a ball joint on one side of the swashplate. When the movable component moves, the convex arc portion of the swashplate slides along the contoured wear-resistant plate, causing the swashplate to swing.

[0009] In one or more embodiments of this application, the outer casing has two oil passages, and the swash plate has an oil groove on the side near the conformal wear-resistant plate. The oil passages include a first drilled hole, a second drilled hole, and a third drilled hole. The first drilled hole extends from one end of the outer casing away from the concave arc portion toward the concave arc portion. The second drilled hole extends upward from the bottom of one end of the outer casing near the concave arc portion and communicates with the first drilled hole. The third drilled hole penetrates the conformal wear-resistant plate and extends to the second drilled hole. The end of the third drilled hole away from the second drilled hole communicates with the oil groove. The two ends of the second drilled hole communicate with the first drilled hole and the third drilled hole, respectively. A first plug is provided at the end of the second drilled hole near the first drilled hole.

[0010] In one or more embodiments of this application, the outer casing body has a bearing hole and a sealing hole at one end of the concave arc portion. The bearing hole has an inner groove on the hole wall near the sealing hole. The integrated arc-shaped plunger pump casing also includes two fourth drill holes, two fifth drill holes, two sixth drill holes, and a contour tube. The fourth drill hole extends from the bottom wall of the sealing hole toward the second drill hole and communicates with the second drill hole. The fifth drill hole extends from the side wall of the bearing hole toward the fourth drill hole and communicates with the fourth drill hole. The sixth drill hole extends upward from the side of the outer casing body with the second drill hole and communicates with the inner groove. The contour tube includes a curved portion and two insertion portions. The two insertion portions extend into the corresponding sixth drill hole. The curved portion extends into the inner groove, and both ends of the curved portion communicate with the corresponding fifth drill hole. A second plug is provided at the end of the fourth drill hole away from the second drill hole. A normally closed one-way valve is provided at the connection between the fourth drill hole and the second drill hole.

[0011] In one or more embodiments of this application, a bearing is fixedly installed in the bearing hole, the inner groove and the contour tube are both located at the end of the bearing near the sealing hole, each of the insertion parts is provided with a solenoid valve, the contour tube also has an extension, a braking element is raised and lowered on the extension, and one end of the braking element extends out of the extension.

[0012] In one or more embodiments of this application, the connection between the inner groove and the fifth borehole also has a slot, and the integrated arc-shaped plunger pump housing also includes a transition plug, which is inserted into the slot. The transition plug has a contour hole, and both ends of the transition plug are respectively sealed to the contour tube and the housing body.

[0013] In one or more embodiments of this application, the sidewall of the transition plug has a sealing groove, and a sealing strip is provided in the sealing groove.

[0014] In one or more embodiments of this application, the brake member has an annular groove, one end of the brake member having the annular groove extends into the extension, and one end of the extension away from the curved portion has a reduced diameter portion, which extends into the annular groove.

[0015] In one or more embodiments of this application, the end of the sixth borehole facing away from the curved portion has an enlarged diameter portion, the radial dimension of which is larger than the diameter of the sixth borehole.

[0016] In one or more embodiments of this application, the braking element includes a brake column and a brake block, wherein the brake block is detachably connected to the brake column.

[0017] In one or more embodiments of this application, the outer casing body has an oil suction hole and an oil discharge hole at one end away from the concave arc portion, and the oil suction hole and the oil discharge hole are located on both sides of the accommodating cavity and communicate with the accommodating cavity.

[0018] In this embodiment, firstly, the outer shell body and the concave arc portion are integrally connected, achieving the advantages of an integrated arc track and lower processing costs; secondly, the outer shell body has an oil passage, and the swashplate has an oil groove. High-pressure oil flows into the oil passage and enters the oil groove to form oil support, reducing wear; thirdly, the outer shell body has a fourth drilled hole, a fifth drilled hole, a sixth drilled hole, and a contour tube. High-pressure oil can flow into the fourth drilled hole, the fifth drilled hole, and the contour tube after filling the oil groove and then flow out, providing oil cooling and carrying away the heat of the contour wear-resistant plate; fourthly, the contour tube is equipped with a brake and a solenoid valve. When the solenoid valve is closed, the brake extends and abuts against the shaft of the plunger pump, facilitating the disassembly and assembly of the plunger during maintenance, thus providing the advantage of easy maintenance. Attached Figure Description

[0019] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein: Figure 1 The figure shows a structural schematic diagram of an integral arc-shaped plunger pump housing according to this application; Figure 2 The illustration shows a cross-sectional view of a piston pump housing with an integral arc track; Figure 3 The figure shows a schematic diagram of the structure of an integrated arc-shaped plunger pump housing at a certain angle; Figure 4 The diagram shows... Figure 3 A magnified view of section AA; Figure 5 The diagram shows... Figure 4 A magnified view of a portion at point C; Figure 6 The diagram illustrates the structure of the swashplate. Figure 7 The illustration shows a structural schematic diagram of a piston pump housing with an integrated arc track from another angle; Figure 8 The diagram shows... Figure 7 A magnified view of the area at BB; Figure 9 The diagram shows... Figure 8 A magnified view of a portion at point D; Figure 10 The illustration shows the housing of an existing swashplate piston pump. Detailed Implementation

[0020] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0021] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0022] While ordinal numbers such as "first," "second," etc., will be used to describe various components, this does not limit which components are used. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0024] Schematic illustration of a one-piece arc-shaped plunger pump housing, reference Figures 1 to 9 According to any preferred embodiment of the present invention, an integral arc-shaped plunger pump housing includes a housing body 10, a contoured wear-resistant plate 20, a swashplate 30, and a moving part 40.

[0025] Specifically, such as Figure 1 and Figure 2As shown, the outer casing 10 has a receiving cavity 101 and a moving cavity 102. One end of the receiving cavity 101 has two spaced-apart concave arc portions 1011, and the receiving cavity 101 communicates with the moving cavity 102; additionally, as Figures 2 to 5 As shown, the contour-following wear-resistant plate 20 is detachably mounted on each of the concave arc portions 1011; additionally, as Figure 2 and Figure 6 As shown, one end of the swashplate 30 has a contact surface 301, and the other end of the swashplate 30 has two spaced-apart convex arc portions 302; additionally, as Figure 2 As shown, the movable component 40 is movably disposed within the movable cavity 102, and the movable component 40 is connected to one side ball head of the swashplate 30. When the movable component 40 moves, the convex arc portion 302 of the swashplate 30 slides along the contour wear-resistant plate 20 and causes the swashplate 30 to swing.

[0026] It should be noted that the piston pump shaft is rotatably mounted on the housing body 10, and multiple pistons are fixedly mounted on the piston pump shaft. The movable end of each piston contacts the contact surface 301 of the swashplate 30. By causing the moving member 40 to move axially, the swashplate 30 swings along the contour wear-resistant plate 20. When the swashplate 30 swings at an angle, the convex arc portion 302 of the swashplate 30 slides against the side of the contour wear-resistant plate 20 opposite to the concave arc portion 1011 in the form of surface friction. It should be pointed out that by integrating the arc-shaped swing seat of the prior art with the housing body 10 in an integrated design, the problem of separate components is solved. The poor sealing of the lower plane effectively reduces the risk of internal leakage in the hydraulic piston pump. Furthermore, since the concave arc portion 1011 is integrally connected to the outer shell body 10, its mechanical properties meet the requirements, eliminating the need for heat treatment to improve mechanical properties as required by the separate design in existing technologies. Compared to existing technologies, this helps reduce production costs, processing time, and shorten the production cycle. It should also be noted that the overall shape of the contour wear-resistant plate 20 is crescent-shaped, conforming to the design of the concave arc portion 1011. By providing the contour wear-resistant plate 20, when it wears out, it can be replaced, reducing overall replacement costs. Clearly, compared to existing technologies, this application has the advantages of an integrated arc design and lower processing costs.

[0027] Furthermore, such as Figure 3 and Figure 4As shown, the outer casing 10 has two oil passages 103, which are symmetrically arranged around a central plane of the outer casing 10. The swash plate 30 has an oil groove 303 on the side near the contour wear-resistant plate 20. The oil passages 103 include a first drill hole 1031, a second drill hole 1032, and a third drill hole 1033. The first drill hole 1031 extends from one end of the outer casing 10 away from the concave arc portion 1011 towards the concave arc portion 1011. The second drill hole 1032 extends from the outer casing 10 away from the concave arc portion 1011 towards the concave arc portion 1011. The bottom of the shell body 10 near the concave arc portion 1011 extends upward and communicates with the first drill hole 1031. The third drill hole 1033 penetrates the contour wear-resistant plate 20 and extends to the second drill hole 1032. The end of the third drill hole 1033 away from the second drill hole 1032 communicates with the oil groove 303. The two ends of the second drill hole 1032 communicate with the first drill hole 1031 and the third drill hole 1033 respectively. The end of the second drill hole 1032 near the first drill hole 1031 is provided with a first plug.

[0028] It should be noted that by injecting high-pressure oil into the oil passage 103, the high-pressure oil flows from the first drill hole 1031 into the second drill hole 1032, and from the third drill hole 1033 into the oil groove 303. The high-pressure oil flowing into the oil groove 303 provides an oil body support, which can be regarded as the high-pressure oil flowing into the oil groove 303 as a buffer oil pad, effectively reducing the friction between the convex arc portion 302 and the contour wear-resistant plate 20. In addition, since the outer shell body 10 is cast, the oil passage 103 cannot be obtained by casting. The oil passage 103 is obtained by machining through the first drill hole 1031, the second drill hole 1032, and the third drill hole 1033. By setting the first plug on the second drill hole 1032, high-pressure oil is prevented from flowing out of the outlet of the second drill hole 1032.

[0029] Furthermore, such as Figure 2 , Figure 5 and Figure 9As shown, the outer casing 10 has a bearing hole 104 and a sealing hole 105 at one end of the concave arc portion 1011. The bearing hole 104 has an inner groove 106 on the wall near the sealing hole 105. The integrated arc-shaped plunger pump casing also includes two fourth drill holes 1071, two fifth drill holes 1072, two sixth drill holes 108, and a contour tube 50. The fourth drill hole 1071 extends from the bottom wall of the sealing hole 105 toward the second drill hole 1032 and communicates with the second drill hole 1032. The fifth drill hole 1072 extends from the side wall of the bearing hole 104 toward the fourth drill hole 1071 and communicates with the fourth drill hole 1032. The hole 1071 is connected, and the sixth drill hole 108 extends upward from the side of the outer shell body 10 with the second drill hole 1032 and is connected to the inner groove 106. The contour tube 50 includes a curved part 501 and two insertion parts 502. The two insertion parts 502 respectively extend into the corresponding sixth drill hole 108. The curved part 501 extends into the inner groove 106, and the two ends of the curved part 501 are respectively connected to the corresponding fifth drill hole 1072. The end of the fourth drill hole 1071 opposite to the second drill hole 1032 is provided with a second plug. A normally closed one-way valve is provided at the connection between the fourth drill hole 1071 and the second drill hole 1032.

[0030] It should be noted that the sealing hole is used to place the external oil seal cap, which is detachably connected to the outer casing 10. The fourth drilled hole 1071 and the fifth drilled hole 1072 together form a cooling channel. By setting the inner groove 106 and placing the contour tube 50 in the inner groove 106, with both ends of the contour tube 50 communicating with the two cooling channels respectively, and by setting the sixth drilled hole 108 and allowing the insertion part 502 of the contour tube 50 to extend into and pass through the sixth drilled hole 108, high-pressure oil fills the oil tank 3. After 03, the normally closed one-way valve is pushed open, and the oil flows into the fourth drill hole 1071, and then into the contour tube 50 along the fifth drill hole 1072. The oil then flows along the bend 501 to the insertion part 502. It should be noted that the end of the insertion part 502 away from the bend 501 is connected to the external oil tank, so that the high-pressure oil flows back into the tank. Through the circulation of the high-pressure oil, the heat transferred from the swash plate 30 to the outer shell body 10 is carried away, thereby reducing the overall temperature of the contour wear-resistant plate 20 and helping to extend the service life of the contour wear-resistant plate 20.

[0031] Furthermore, a bearing is fixedly installed inside the bearing hole 104, such as... Figure 9As shown, the inner groove 106 and the contour tube 50 are both located at one end of the bearing near the sealing hole 105. Each insertion part 502 is provided with a solenoid valve (not shown in the figure). The contour tube 50 also has an extension part 503. A braking element 504 is raised and lowered on the extension part 503. One end of the braking element 504 extends out of the extension part 503.

[0032] It should be noted that, to achieve the circulation of the high-pressure oil, the solenoid valve is open during circulation to allow the high-pressure oil to flow back to the external oil tank. When performing maintenance and removing the plunger on the shaft, to prevent the shaft from rotating, the operator closes the solenoid valve and injects high-pressure oil into the oil passage 103. After the high-pressure oil pushes the normally closed check valve open and flows into the cooling passage, it cannot flow back to the oil tank from the insertion part 502. Therefore, the high-pressure oil will flow... The brake is pushed upward by a force applied to the middle section of the curved portion 501 and the brake 504. It should be noted that the brake 504 is located below the shaft of the plunger pump. After the brake 504 moves upward a predetermined distance, it abuts against the shaft of the plunger pump and restricts the shaft from rotating circumferentially. This makes it easier for maintenance personnel to remove the worn plunger from the shaft and replace it with a new plunger. Compared with the prior art, this has the advantage of being easier to maintain.

[0033] It is evident that by setting up the oil passage 103, the cooling passage, and the contour tube 50, one function is to allow high-pressure oil to enter the oil sump 303 and form an oil support, thereby reducing the wear at the contour wear-resistant plate 20; another function is to form a circulating oil cooling circuit when the solenoid valve is open, thereby reducing the heat at the contour wear-resistant plate 20; and a third function is to keep the solenoid valve in a normally closed state during maintenance, and to allow the high-pressure oil entering the contour tube 50 to lift the brake component 504, so that the piston pump shaft remains stationary during maintenance.

[0034] In addition, to prevent high-pressure oil from flowing into the extension 503 and pushing the brake 504 when the solenoid valve is open, thus affecting the oil delivery of the plunger pump, another normally closed solenoid valve can be provided at one end of the extension 503 near the bend 501, and this normally closed solenoid valve is only opened during maintenance.

[0035] Furthermore, to improve the sealing performance of the two ends of the curved portion 501 at the connection points with the fifth drilled hole 1072, such as... Figure 9As shown, the inner groove 106 and the fifth drill hole 1072 are connected by a slot 109. The integrated arc-shaped plunger pump housing also includes a transition plug 60. The transition plug 60 is inserted into the slot 109. The transition plug 60 has a contour hole. The two ends of the transition plug 60 are respectively sealed to the contour tube 50 and the housing body 10. More specifically, this includes, but is not limited to, having the two ends of the transition plug 60 respectively engage with the contour tube 50 and the housing body 10, and then sealing the gap between the contour tube 50 and the housing body 10 with sealant.

[0036] It should be noted that, in addition to sealing the transition plug 60 to the contour tube 50 and the outer shell body 10 respectively, after the contour tube 50 extends into the inner groove 106, the outer wall of the contour tube 50 is also sealed to the outer shell body 10.

[0037] Furthermore, to improve sealing, the sidewall of the transition plug 60 has a sealing groove, and a sealing strip is provided in the sealing groove.

[0038] Furthermore, to prevent the brake member 504 from dislodging from the extension portion 503, the brake member 504 has an annular groove, one end of the brake member 504 having the annular groove extends into the extension portion 503, and the end of the extension portion 503 facing away from the curved portion 501 has a reduced diameter portion 5031, the reduced diameter portion 5031 extending into the annular groove.

[0039] Furthermore, to provide placement and clearance space for the solenoid valve, such as... Figure 9 As shown, the sixth borehole 108 has an enlarged diameter portion 1081 at one end opposite to the curved portion 501. The radial dimension of the enlarged diameter portion 1081 is larger than the diameter of the sixth borehole 108, and the enlarged diameter portion 1081 is implemented as a countersunk hole.

[0040] Furthermore, to facilitate the replacement of the worn brake component 504, the braking part of the brake component 504 is designed separately from the main body. Specifically, the brake component 504 includes a brake pin and a brake block, and the brake block is detachably connected to the brake pin.

[0041] Furthermore, in this application, such as Figure 1 As shown, the outer shell body 10 has an oil suction hole 1091 and an oil discharge hole 1092 at one end away from the concave arc portion 1011. The oil suction hole 1091 and the oil discharge hole 1092 are located on both sides of the accommodating cavity 101 and communicate with the accommodating cavity 101.

[0042] In summary, the integrated arc-shaped plunger pump housing based on the embodiments of this application is explained, which provides advantages such as an integrated arc-shaped plunger pump housing, lower processing costs, and easier maintenance.

[0043] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from these principles.

Claims

1. A one-piece arc-shaped plunger pump housing, characterized in that: The integrated arc-shaped plunger pump housing includes The outer shell body has a receiving cavity and a moving cavity. One end of the receiving cavity has two spaced concave arc portions, and the receiving cavity is in communication with the moving cavity. The contoured wear-resistant sheet is detachably mounted on each of the concave arc portions; A swash plate, one end of which has a contact surface and the other end of which has two spaced-apart convex arc portions; A movable component is movably disposed within the movable cavity and is connected to a ball joint on one side of the swashplate. When the movable component moves, the convex arc portion of the swashplate slides along the contoured wear-resistant plate, causing the swashplate to swing.

2. The integrated arc-shaped plunger pump housing according to claim 1, characterized in that: The outer casing has two oil passages. The swash plate has an oil groove on the side near the contour wear-resistant plate. The oil passages include a first drilled hole, a second drilled hole, and a third drilled hole. The first drilled hole extends from one end of the outer casing away from the concave arc portion toward the concave arc portion. The second drilled hole extends upward from the bottom of one end of the outer casing near the concave arc portion and communicates with the first drilled hole. The third drilled hole penetrates the contour wear-resistant plate and extends to the second drilled hole. The end of the third drilled hole away from the second drilled hole communicates with the oil groove. The two ends of the second drilled hole communicate with the first drilled hole and the third drilled hole, respectively. A first plug is provided at the end of the second drilled hole near the first drilled hole.

3. The integrated arc-shaped plunger pump housing according to claim 2, characterized in that: The outer casing body has a bearing hole and a sealing hole at one end of the concave arc portion. The bearing hole has an inner groove on the wall of the end near the sealing hole. The integrated arc-shaped plunger pump casing also includes two fourth drill holes, two fifth drill holes, two sixth drill holes, and a contour tube. The fourth drill hole extends from the bottom wall of the sealing hole toward the second drill hole and communicates with the second drill hole. The fifth drill hole extends from the side wall of the bearing hole toward the fourth drill hole and communicates with the fourth drill hole. The sixth drill hole extends upward from the side of the outer casing body with the second drill hole and communicates with the inner groove. The contour tube includes a curved portion and two insertion portions. The two insertion portions extend into the corresponding sixth drill hole, and the curved portion extends into the inner groove. Both ends of the curved portion communicate with the corresponding fifth drill hole. A second plug is provided at the end of the fourth drill hole away from the second drill hole. A normally closed one-way valve is provided at the connection between the fourth drill hole and the second drill hole.

4. The integrated arc-shaped plunger pump housing according to claim 3, characterized in that: A bearing is fixedly installed in the bearing hole. The inner groove and the contour tube are both located at the end of the bearing near the sealing hole. Each insertion part is provided with a solenoid valve. The contour tube also has an extension. A braking element is raised and lowered on the extension. One end of the braking element extends out of the extension.

5. The integrated arc-shaped plunger pump housing according to claim 4, characterized in that: The inner groove and the fifth borehole are connected by a slot. The integrated arc-shaped plunger pump housing also includes a transition plug. The transition plug is inserted into the slot. The transition plug has a contour hole. The two ends of the transition plug are respectively sealed to the contour tube and the housing body.

6. The integrated arc-shaped plunger pump housing according to claim 5, characterized in that: The sidewall of the transition plug has a sealing groove, and a sealing strip is provided in the sealing groove.

7. The integrated arc-shaped plunger pump housing according to claim 6, characterized in that: The brake element has an annular groove, one end of the brake element having the annular groove extends into the extension, and the end of the extension away from the curved portion has a reduced diameter portion, which extends into the annular groove.

8. The integrated arc-shaped plunger pump housing according to claim 7, characterized in that: The sixth borehole has an enlarged diameter section at one end away from the curved section, and the radial dimension of the enlarged diameter section is larger than the diameter of the sixth borehole.

9. The integrated arc-shaped plunger pump housing according to claim 8, characterized in that: The braking component includes a brake column and a brake block, wherein the brake block is detachably connected to the brake column.

10. The integrated arc-shaped plunger pump housing according to claim 9, characterized in that: The outer casing body has an oil suction hole and an oil discharge hole at one end away from the concave arc portion. The oil suction hole and the oil discharge hole are located on both sides of the accommodating cavity and communicate with the accommodating cavity.

Images