A pump chamber grinding machine

Abstract

This invention discloses a novel pump chamber grinding machine, relating to the field of plunger pump parts processing technology. It includes: a housing, a three-jaw chuck, an operating table, a first lifting device, a support arm, a motor, a connecting rod, a distribution plate tensioning fixture, a tensioning seat bracket, and a second lifting device. The support arm is vertically and fixedly connected to the top of the lifting device. The motor is fixedly connected to the end of the support arm away from the lifting device, and the motor's output shaft is collinear with the central axis of the three-jaw chuck. The top of the connecting rod is universally connected to the motor's output shaft, enabling the motor to drive the connecting rod to rotate and thus rotate the distribution plate. One end of the tensioning seat bracket is universally connected to the fixed end of the first lifting device, and the middle part of the tensioning seat bracket is rotatably connected to the distribution plate tensioning fixture. An adjustable counterweight is provided at the end of the tensioning seat bracket away from the first lifting device to adjust the force applied during grinding of the distribution plate. The structure is simple, effectively improving grinding efficiency and grinding precision.

Description

Technical Field

[0001] This invention relates to the field of plunger pump parts processing technology, and in particular to a pump chamber grinding machine. Background Technology

[0002] Currently, plunger pumps rely on the reciprocating motion of a plunger within the cylinder block to change the volume of the sealed working cavity, thereby achieving the oil suction and pressure process. The oil pressured out by the plunger enters and exits through the oblong orifice on the distributor plate. Before mass production, a plunger pump needs to undergo multiple repeated tests until it reaches the expected output power. Each time the expected output power is not achieved during a test, the plunger pump needs to be disassembled to inspect the curved contact area between the cylinder block and the distributor plate for scratches. Because the cylinder block is mostly made of steel with a copper alloy cladding on the contact surface, and the distributor plate is made of steel, the hardness of the distributor plate is greater than that of the cylinder block. Therefore, the scratches on the distributor plate are not dents, but rather marks left by the rotational friction of the cylinder block material on the distributor plate. The output power of a plunger pump is largely affected by the contact precision between the cylinder block and the distributor plate. Technicians can determine the fit between the distributor plate and the cylinder block by observing the contact marks. Before reassembling the distributor plate onto the plunger pump, it needs to be ground to remove scratches and reduce its thickness. The pump is then reassembled and tested until it reaches the expected output power. Once the expected output power is achieved, the thickness of the distributor plate is measured, and this thickness is used for mass production of distributor plates, completing the batch assembly of the plunger pumps. While distributor plates are typically ground in batches using a grinding machine, grinding a single distributor plate during testing requires manual grinding. Manual grinding is inefficient, and prolonged grinding can lead to fatigue and reduced grinding precision. Therefore, an electric grinding machine is needed to improve efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a pump chamber grinding machine to solve the problems existing in the prior art. It has a simple structure, effectively improves grinding efficiency, and effectively improves grinding accuracy.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a pump cylinder grinding machine, comprising: a housing, a three-jaw chuck, an operating table, a first lifting device, a support arm, a motor, a connecting rod, an oil distribution plate tensioning fixture, a tensioning seat bracket, and a second lifting device. The three-jaw chuck is used to fix the cylinder body. The operating table is fixedly disposed above the housing and has a gap between it and the housing. A circular hole for the cylinder body to pass through is provided in the middle of the operating table. The bottom of the first lifting device is vertically fixedly connected to one side of the top of the operating table. The support arm is vertically fixedly connected to the top of the first lifting device. The motor is fixedly connected to the end of the support arm away from the lifting device, and the output shaft of the motor is collinear with the central axis of the three-jaw chuck. The top of the connecting rod is universally connected to the output shaft of the motor, and the bottom of the connecting rod is provided with an internal hexagonal sleeve. The oil distribution plate tensioning fixture is used to connect with the oil distribution plate tensioning device. The disc is detachably fixedly connected. The top of the oil distribution disc tensioning fixture is provided with a locking cap, which is used to connect with the internal hexagonal sleeve. The motor can drive the connecting rod to rotate, thereby driving the oil distribution disc to rotate. The connecting rod is universally connected to the output shaft of the motor to accommodate the shaking that occurs when the oil distribution disc rotates. One end of the tensioning seat bracket is universally connected to the fixed end of the first lifting device. The middle part of the tensioning seat bracket is rotatably connected to the oil distribution disc tensioning fixture. An adjustable counterweight is provided at the end of the tensioning seat bracket away from the first lifting device to adjust the appropriate force applied when grinding the oil distribution disc. The second lifting device is located at the end of the operating table away from the first lifting device. The top of the second lifting device is used to connect to the end of the tensioning seat bracket away from the first lifting device to adjust the height of the tensioning seat bracket.

[0006] Preferably, the first lifting device includes a lifting sleeve, a lifting rod, a lifting screw, and a lifting rocker arm. The bottom end of the lifting sleeve is fixedly connected to the operating table, the lifting rod is slidably connected to the lifting sleeve, the lifting screw is threadedly connected to the lifting rod, the bottom of the lifting screw is rotatably connected to the bottom of the lifting sleeve, and the lifting rocker arm is fixedly connected to the top of the lifting screw.

[0007] Preferably, it also includes a slider, and the outer side wall of the lifting sleeve is provided with a vertical groove. The slider is fixedly connected to the lifting rod, and the slider passes through the groove and is slidably connected to the groove to restrict the relative rotation of the lifting rod and the lifting sleeve.

[0008] Preferably, it further includes a first set screw, and a motor universal joint is provided at the top of the connecting rod. A first threaded hole is provided on the side wall of the motor universal joint. The first set screw is used to pass through the first threaded hole and abut against the output shaft of the motor.

[0009] Preferably, it also includes multiple fixing bolts and mounting bases. The mounting base is fixedly connected to the end of the support arm away from the lifting rod at its center. The four corners of the mounting base are provided with through holes. One side of the motor is provided with multiple fixing screw holes corresponding to the through holes. Each fixing bolt is used to pass through the through hole and be threadedly connected to the fixing screw hole.

[0010] Preferably, the oil distribution plate expansion fixture further includes an expansion seat and an expansion bolt. The expansion seat has a conical hole in the middle, and the expansion bolt has a cone at the bottom. The expansion bolt is used to pass through the conical hole and be threaded to the locking cap. The bottom of the expansion seat has multiple expansion platforms, which are used to expand and connect with the inner hole of the oil distribution plate. The middle part of the expansion seat is used to rotatably connect with the middle part of the expansion seat bracket.

[0011] Preferably, the oil distribution plate tightening fixture further includes a hexagonal platform, a bearing platform, and a bearing. The hexagonal platform is disposed above the expansion seat, the bearing platform is disposed above the hexagonal platform, the bearing is sleeved on the bearing platform, and the locking cap is used to clamp the bearing with the hexagonal platform. The expansion seat bracket has an inner ring in the middle, which is used to fix and connect with the outer ring of the bearing.

[0012] Preferably, the tensioning seat bracket further includes a bracket connecting rod, a universal joint connecting rod, a bracket universal joint, a second set screw, a third set screw, and a counterweight. Multiple positioning pins are provided in the vertical direction of the lifting sleeve rod. A second threaded hole and a third threaded hole are respectively provided at both ends of the bracket universal joint. The second set screw is used to thread into the second threaded hole and press against the positioning pin. The third set screw is used to thread through the third threaded hole and press against the universal joint connecting rod. One end of the universal joint connecting rod away from the bracket universal joint is fixedly connected to the inner ring. One end of the bracket connecting rod is fixedly connected to the end of the inner ring away from the universal joint connecting rod, and the other end is fixedly connected to the counterweight.

[0013] Preferably, the counterweight part includes a counterweight sleeve, a limiting ring, multiple counterweight blocks, a baffle plate, and a locking knob. The counterweight sleeve is fixedly connected to the support rod, and the limiting ring is fixedly connected to one end of the counterweight sleeve near the support rod. Each counterweight block is used to be sleeved on the outside of the counterweight sleeve. A locking screw hole is provided on the side of the counterweight sleeve away from the support rod. The locking knob is used to be threadedly connected to the locking screw hole. The baffle plate is disposed between the locking knob and the counterweight sleeve.

[0014] Preferably, the device further includes a base plate, a first fastening bolt, a first adjusting bolt, a first fixed baffle, a first adjusting screw hole, a first movable baffle, a first retaining ring, a second fastening bolt, a second adjusting bolt, a second fixed baffle, a second adjusting screw hole, a second movable baffle, and a second retaining ring. The second lifting device includes a fixed sleeve, a telescopic rod, and a fourth setter screw. The fixed sleeve has a fourth threaded hole, and the fourth setter screw is used to thread into the fourth threaded hole and tighten the telescopic rod. The base plate is fixedly connected to the top of the telescopic rod, and the top of the base plate has a dovetail groove. The first movable baffle and the second movable baffle are fitted and fixed in the dovetail groove and can move along... The first fixed baffle is fixedly connected to one end of the base plate by the first fastening bolt, and the second fixed baffle is fixedly connected to the other end of the base plate by the second fastening bolt. A first trapezoidal hole is provided in the middle of the first movable baffle, and the first retaining ring is rotatably connected to the first trapezoidal hole. The first retaining ring is fixedly connected to one end of the first adjusting bolt that passes through the first adjusting screw hole. A second trapezoidal hole is provided in the middle of the second movable baffle, and the second retaining ring is rotatably connected to the second trapezoidal hole. The second retaining ring is fixedly connected to one end of the second adjusting bolt that passes through the second adjusting screw hole.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] This invention provides a pump cylinder grinding machine. The cylinder body is fixed on a three-jaw chuck, and the oil distribution plate expansion clamping fixture is connected and fixed together with the oil distribution plate. Then, the oil distribution plate and the cylinder body are brought to the grinding position. The counterweight set on the left side of the expansion seat bracket can better control the grinding force to achieve a better grinding effect. The position of the motor is adjusted by the first lifting device. The oil distribution plate expansion clamping fixture is universally connected to the motor output shaft at the top through the connecting rod, so that the oil distribution plate and the cylinder body can move relative to each other, further improving the grinding efficiency. The structure is simple and effectively improves the grinding work efficiency and grinding precision. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the pump chamber grinding machine is provided for this invention;

[0019] Figure 2 This invention provides a schematic diagram of the structure of the first lifting device and the motor in the pump grinding machine;

[0020] Figure 3 This invention provides a structural schematic diagram of the expansion seat bracket and the oil distribution plate expansion fixture in a pump chamber grinding machine;

[0021] Figure 4 This invention provides a structural schematic diagram of the expansion seat bracket and the second lifting device in a pump grinding machine;

[0022] In the diagram: 1. Chassis; 101. Foot; 102. Control area; 103. Support rod; 104. Control panel; 105. Three-jaw chuck; 2. Lifting rod; 201. Lifting rod; 202. Motor; 203. Lifting screw; 204. Lifting rocker arm; 205. Support arm; 206. Fixing bolt; 207. Mounting base; 208. Fixing screw hole; 209. Output shaft; 3. Motor universal joint; 301. First set screw; 302. Hex socket sleeve; 4. Locking cap; 5. Expansion seat bracket; 501. Inner ring; 502. Bracket connecting rod; 503. Universal joint connecting rod; 504. Bracket universal joint; 505. Second set screw; 506. Third set screw; 507. Positioning pin; 508. Locking screw hole; 6. Bearing base; 601. Tapered hole; 602. Bearing; 603. Hexagonal platform; 604. Expansion seat; 605. Expansion bolt; 606. Cone; 7. Oil distribution plate; 701. Inner hole; 8. Cylinder body; 801. Cylinder body grinding surface; 9. Fixing sleeve; 901. Telescopic rod; 902. Base plate; 903. First fastening bolt; 904. First adjusting bolt; 905. First fixing baffle; 906. First adjusting screw hole; 907. First trapezoidal hole; 908. First movable baffle; 909. First retaining ring; 10. Counterweight sleeve; 1001. Counterweight block; 1002. Baffle plate; 1003. Locking knob. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The purpose of this invention is to provide a pump chamber grinding machine to solve the problems existing in the prior art. It has a simple structure, effectively improves grinding efficiency, and effectively improves grinding accuracy.

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This invention provides a pump cylinder grinding machine, comprising: a housing 1, a three-jaw chuck 105, an operating table 104, a first lifting device, a support arm 205, a motor 202, a connecting rod, an oil distribution plate tensioning fixture, a tensioning seat bracket 5, and a second lifting device. The three-jaw chuck 105 is used to fix the cylinder 8. The operating table 104 is fixedly disposed above the housing 1 and has a gap between it and the housing 1. A circular hole for the cylinder 8 to pass through is provided in the middle of the operating table 104. The bottom of the first lifting device is vertically fixedly connected to one side of the top of the operating table 104. The support arm 205 is connected to the first lifting device. The top of the device is vertically fixed; the motor 202 is fixedly connected to the end of the support arm 205 away from the lifting device, and the output shaft 209 of the motor 202 is collinear with the central axis of the three-jaw chuck 105; the top of the connecting rod is universally connected to the output shaft 209 of the motor 202, and the bottom of the connecting rod is provided with an internal hexagonal sleeve 302; the oil distribution plate tightening fixture is used to detachably and fixedly connect with the oil distribution plate 7, and the top of the oil distribution plate tightening fixture is provided with a locking cap 4, which is used to cooperate with the internal hexagonal sleeve 302. The motor 202 can drive the connecting rod to rotate, thereby driving the oil distribution plate 7 to rotate. Furthermore, the connecting rod is universally connected to the output shaft 209 of the motor 202 to accommodate the shaking that occurs when the oil distribution plate 7 rotates; one end of the tensioning seat bracket 5 is universally connected to the fixed end of the first lifting device, the middle part of the tensioning seat bracket 5 is rotatably connected to the oil distribution plate tensioning fixture, and an adjustable counterweight is provided at the end of the tensioning seat bracket 5 away from the first lifting device to adjust the appropriate force applied when grinding the oil distribution plate 7; the top of the second lifting device, located at the end of the operating table 104 away from the first lifting device, is used to connect to the end of the tensioning seat bracket 5 away from the first lifting device to adjust the height of the tensioning seat bracket 5. The cylinder body 8 is fixed on the three-jaw chuck 105, and the oil distribution plate expansion fixture is connected and fixed together with the oil distribution plate 7. Then, the oil distribution plate 7 and the cylinder body 8 are brought to the grinding position. The counterweight set on the left side of the expansion seat bracket 5 can better control the grinding force to achieve a better grinding effect. The position of the motor 202 is adjusted by the first lifting device. The oil distribution plate expansion fixture is universally connected to the output shaft 209 of the motor 202 at the top through the connecting rod, so that the oil distribution plate 7 and the cylinder body 8 move relative to each other, further improving the grinding efficiency. The structure is simple and effectively improves the grinding work efficiency and grinding precision.

[0027] In a preferred embodiment, the chassis 1 is a square chassis 1 with four feet 101 at the bottom. A control area 102 is provided on the side of the chassis 1 for controlling and adjusting the rotation speed and duration of the motor 202 inside the chassis 1 and the motor 202 at the top of the grinder. A support rod 103 is provided at each of the four corners of the upper part of the chassis 1 to support a circular operating table 104 with a circular hole in the middle.

[0028] In a preferred embodiment, the first lifting device includes a lifting sleeve 2, a lifting rod 201, a lifting screw 203, and a lifting rocker arm 204. The bottom end of the lifting sleeve 2 is fixedly connected to the operating table 104. The lifting rod 201 is slidably connected to the lifting sleeve 2. The lifting screw 203 is threadedly connected to the lifting rod 201. The bottom of the lifting screw 203 is rotatably connected to the bottom of the lifting sleeve 2. The lifting rocker arm 204 is fixedly connected to the top of the lifting screw 203. The structure is simple and easy to use. The lifting rod 201 can be raised or lowered by rotating the lifting rocker arm 204.

[0029] In a preferred embodiment, a slider is also included. The outer wall of the lifting sleeve 2 is provided with a vertical groove. The slider is fixedly connected to the lifting rod 201, and the slider slides through the groove to restrict the relative rotation of the lifting rod 201 and the lifting sleeve 2. The structure is simple and easy to use.

[0030] In a preferred embodiment, the pump grinding machine further includes a first set screw 301, a motor universal joint 3 is provided at the top of the connecting rod, and a first threaded hole is provided on the side wall of the motor universal joint 3. The first set screw 301 is used to pass through the first threaded hole and abut against the output shaft 209 of the motor 202. The structure is simple and easy to use.

[0031] In a preferred embodiment, the pump grinding machine further includes multiple fixing bolts 206 and a mounting base 207. The mounting base 207 is fixedly connected to the end of the support arm 205 away from the lifting rod 201. Through holes are provided at the four corners of the mounting base 207. Multiple fixing screw holes 208 corresponding to the through holes are provided on one side of the motor 202. Each fixing bolt 206 is used to pass through the through hole and be threadedly connected to the fixing screw hole 208. The structure is simple and easy to use.

[0032] In a preferred embodiment, the oil distribution plate expansion fixture further includes an expansion seat 604 and an expansion bolt 605. The expansion seat 604 has a tapered hole 601 in the middle, and the expansion bolt 605 has a cone 606 at the bottom. The expansion bolt 605 is used to pass through the tapered hole 601 and be threaded to the locking cap 4. The bottom of the expansion seat 604 has multiple expansion platforms, which are used to expand and connect with the inner hole 701 of the oil distribution plate 7. The middle part of the expansion seat 604 is used to rotatably connect with the middle part of the expansion seat bracket 5. The structure is simple and easy to use.

[0033] In a preferred embodiment, the oil distribution plate expansion clamping fixture further includes a hexagonal platform 603, a bearing platform 6, and a bearing 602. The hexagonal platform 603 is positioned above the expansion seat 604, and the bearing platform 6 is positioned above the hexagonal platform 603. The bearing 602 is sleeved on the bearing platform 6, and the locking cap 4 is used to clamp the bearing 602 with the hexagonal platform 603. An inner ring 501 is provided in the middle of the expansion seat bracket 5, and the inner ring 501 is used to fix and connect with the outer ring of the bearing 602. The structure is simple and easy to use.

[0034] In a preferred embodiment, the tensioning seat bracket 5 further includes a bracket connecting rod 502, a universal joint connecting rod 503, a bracket universal joint, a second set screw 504, a bracket universal joint 505, a third set screw 506, and a counterweight. Multiple positioning pins 507 are provided in the vertical direction of the lifting sleeve rod 2. A second threaded hole and a third threaded hole are respectively provided at both ends of the bracket universal joint. The second set screw 504 and the bracket universal joint 505 are used to thread into the second threaded hole and tighten the positioning pins 507. The third set screw 506 is used to thread through the third threaded hole and tighten the universal joint connecting rod 503. One end of the universal joint connecting rod 503 away from the bracket universal joint is fixedly connected to the inner ring 501. One end of the bracket connecting rod 502 is fixedly connected to the end of the inner ring 501 away from the universal joint connecting rod 503, and the other end is fixedly connected to the counterweight. The structure is simple and easy to use.

[0035] In a preferred embodiment, the counterweight part includes a counterweight sleeve 10, a limiting ring, multiple counterweight blocks 1001, a baffle plate 1002, and a locking knob 1003. The counterweight sleeve 10 is fixedly connected to the support rod 502, and the limiting ring is fixedly connected to one end of the counterweight sleeve 10 near the support rod 502. Each counterweight block 1001 is used to be sleeved on the outside of the counterweight sleeve 10. A locking screw hole 508 is provided on the side of the counterweight sleeve 10 away from the support rod 502. The locking knob 1003 is used to be threadedly connected to the locking screw hole 508. The baffle plate 1002 is disposed between the locking knob 1003 and the counterweight sleeve 10. The structure is simple and easy to use.

[0036] In a preferred embodiment, the pump grinding machine further includes a base plate 902, a first fastening bolt 903, a first adjusting bolt 904, a first fixed baffle 905, a first adjusting screw hole 906, a first movable baffle 908, a first retaining ring 909, a second fastening bolt, a second adjusting bolt, a second fixed baffle, a second adjusting screw hole, a second movable baffle, and a second retaining ring. The second lifting device includes a fixed sleeve 9, a telescopic rod 901, and a fourth set screw. The fixed sleeve 9 is provided with a fourth threaded hole, and the fourth set screw is used to thread into the fourth threaded hole and tighten the telescopic rod 901. The base plate 902 is fixedly connected to the top of the telescopic rod 901, and the top of the base plate 902 is provided with a dovetail groove. The first movable baffle 908 and the second... The movable baffle is fitted and fixed in the dovetail groove and can slide along the dovetail groove. The first fixed baffle 905 is fixedly connected to one end of the base plate 902 by the first fastening bolt, and the second fixed baffle is fixedly connected to the other end of the base plate 902 by the second fastening bolt. The first movable baffle 908 has a first trapezoidal hole 907 in the middle, and the first retaining ring 909 is rotatably connected to the first trapezoidal hole 907. The first retaining ring 909 is fixedly connected to one end of the first adjusting bolt 904 that passes through the first adjusting screw hole 906. The second movable baffle has a second trapezoidal hole in the middle, and the second retaining ring is rotatably connected to the second trapezoidal hole. The second retaining ring is fixedly connected to one end of the second adjusting bolt that passes through the second adjusting screw hole. The structure is simple and easy to use.

[0037] During operation, first select the oil distribution plate 7 and cylinder body 8, insert the expansion bolt 605 upward into the tapered hole 601, install the bearing 602 into the bearing seat 6, and put the locking cap 4 onto the expansion bolt 605. Then, align the expansion seat 604 with the inner hole 701 of the oil distribution plate 7. At this time, one set of expansion seats on the expansion seat 604 will be close to the inner hole 701 of the oil distribution plate 7. Then, use a tool to control the hexagonal platform 603 to prevent rotation. While tightening the locking cap 4, the cone 606 moves upward to expand the tapered hole 601. The expansion seat 604 will tighten the inner hole 701 of the oil distribution plate 7. Finally, the cylinder body 8 is clamped onto the three-jaw chuck 105. According to the different specifications of the cylinder body 8, select the universal joint of the bracket and connect it to the positioning column 507 of different heights. Then lift the bracket connecting rod 502 and connect the assembled oil distribution plate 7, expansion seat 604 and bearing 602 to the inner ring 501 through the bearing 602. Lower the bracket connecting rod 502 so that it is between the first movable baffle 908 and the second movable baffle. At this time, the lower part of the oil distribution plate 7 is in contact with the grinding surface 801 of the cylinder body. Then select an appropriate number of counterweights 1001 and move them onto the counterweight sleeve 10. Use the locking knob 1003 to pass through the baffle 1002 and lock it with the locking screw hole 508. Then adjust the height of the motor 202 so that the inner hexagonal sleeve 302 is fitted into the locking cap 4. Finally, after adjusting the distance between the baffles, the equipment can be started to work.

[0038] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A pump bowl grinder characterized by: include: Chassis, A three-jaw chuck is used to fix the cylinder body; An operating table is fixedly installed above the chassis and is spaced apart from the chassis. A circular hole for the cylinder to pass through is provided in the middle of the operating table. A first lifting device, the bottom of which is vertically fixed to one side of the top of the operating table; A support arm, which is vertically and fixedly connected to the top of the first lifting device; The motor is fixedly connected to the end of the support arm away from the lifting device, and the output shaft of the motor is collinear with the central axis of the three-jaw chuck. A connecting rod, the top end of which is universally connected to the output shaft of the motor, and the bottom end of which is provided with an internal hexagonal sleeve; An oil distribution plate tightening fixture is provided, which is used to detachably and fixedly connect to the oil distribution plate. The top of the oil distribution plate tightening fixture is provided with a locking cap, which is used to cooperate with the internal hexagonal sleeve. The motor can drive the connecting rod to rotate to drive the oil distribution plate to rotate. The connecting rod is universally connected to the output shaft of the motor to accommodate the shaking that occurs when the oil distribution plate rotates. The tensioning seat bracket has one end universally connected to the fixed end of the first lifting device, and the middle part of the tensioning seat bracket is rotatably connected to the oil distribution plate tensioning fixture. An adjustable counterweight is provided at the end of the tensioning seat bracket away from the first lifting device to adjust the appropriate force applied when grinding the oil distribution plate. as well as A second lifting device is disposed on the operating platform at one end away from the first lifting device. The top of the second lifting device is used to connect to the end of the tensioning seat bracket away from the first lifting device to adjust the height of the tensioning seat bracket.

2. The pump bowl grinder of claim 1, wherein: The first lifting device includes a lifting sleeve, a lifting rod, a lifting screw, and a lifting rocker arm. The bottom end of the lifting sleeve is fixedly connected to the operating table. The lifting rod is slidably connected to the lifting sleeve. The lifting screw is threadedly connected to the lifting rod. The bottom of the lifting screw is rotatably connected to the bottom of the lifting sleeve. The lifting rocker arm is fixedly connected to the top of the lifting screw.

3. The pump bowl grinder of claim 2, wherein: It also includes a slider, and the outer wall of the lifting sleeve is provided with a vertical groove. The slider is fixedly connected to the lifting rod, and the slider passes through the groove and is slidably connected to the groove to restrict the relative rotation of the lifting rod and the lifting sleeve.

4. The pump bowl grinder of claim 3, wherein: It also includes a first set screw, and a motor universal joint is provided at the top of the connecting rod. A first threaded hole is provided on the side wall of the motor universal joint. The first set screw is used to pass through the first threaded hole and abut against the output shaft of the motor.

5. The pump chamber grinding machine according to claim 4, characterized in that: It also includes multiple fixing bolts and mounting bases. The mounting base is fixedly connected to the end of the support arm away from the lifting rod in the middle. The four corners of the mounting base are provided with through holes. One side of the motor is provided with multiple fixing screw holes corresponding to the through holes. Each fixing bolt is used to pass through the through hole and be threadedly connected to the fixing screw hole.

6. The pump chamber grinding machine according to claim 5, characterized in that: The expansion and tightening fixture for the oil distribution plate also includes an expansion seat and an expansion bolt. The expansion seat has a conical hole in the middle, and the expansion bolt has a cone at the bottom. The expansion bolt is used to pass through the conical hole and be threaded to the locking cap. The bottom of the expansion seat has multiple expansion platforms, which are used to be expanded and tightened to the inner hole of the oil distribution plate. The middle part of the expansion seat is used to be rotatably connected to the middle part of the expansion seat bracket.

7. The pump chamber grinding machine according to claim 6, characterized in that: The oil distribution plate expansion clamping fixture also includes a hexagonal platform, a bearing platform, and a bearing. The hexagonal platform is located above the expansion seat, and the bearing platform is located above the hexagonal platform. The bearing is sleeved on the bearing platform, and the locking cap is used to clamp the bearing with the hexagonal platform. The expansion seat bracket has an inner ring in the middle, which is used to fix and connect with the outer ring of the bearing.

8. The pump chamber grinding machine according to claim 7, characterized in that: The expansion seat bracket further includes a bracket connecting rod, a universal joint connecting rod, a bracket universal joint, a second set screw, a third set screw, and a counterweight. Multiple positioning pins are arranged vertically on the lifting sleeve rod. A second threaded hole and a third threaded hole are respectively provided at both ends of the bracket universal joint. The second set screw is used to thread into the second threaded hole and tighten the positioning pin. The third set screw is used to thread through the third threaded hole and tighten the universal joint connecting rod. One end of the universal joint connecting rod away from the bracket universal joint is fixedly connected to the inner ring. One end of the bracket connecting rod is fixedly connected to the end of the inner ring away from the universal joint connecting rod, and the other end is fixedly connected to the counterweight.

9. The pump chamber grinding machine according to claim 8, characterized in that: The counterweight unit includes a counterweight sleeve, a limiting ring, multiple counterweight blocks, a baffle plate, and a locking knob. The counterweight sleeve is fixedly connected to the support rod, and the limiting ring is fixedly connected to the end of the counterweight sleeve near the support rod. Each counterweight block is used to be sleeved on the outside of the counterweight sleeve. A locking screw hole is provided on the side of the counterweight sleeve away from the support rod. The locking knob is used to be threadedly connected to the locking screw hole. The baffle plate is disposed between the locking knob and the counterweight sleeve.

10. The pump chamber grinding machine according to claim 9, characterized in that: It also includes a base plate, a first fastening bolt, a first adjusting bolt, a first fixed baffle, a first adjusting screw hole, a first movable baffle, a first retaining ring, a second fastening bolt, a second adjusting bolt, a second fixed baffle, a second adjusting screw hole, a second movable baffle, and a second retaining ring. The second lifting device includes a fixed sleeve, a telescopic rod, and a fourth setter screw. The fixed sleeve is provided with a fourth threaded hole, and the fourth setter screw is used to thread into the fourth threaded hole and tighten the telescopic rod. The base plate is fixedly connected to the top of the telescopic rod, and the top of the base plate is provided with a dovetail groove. The first movable baffle and the second movable baffle are fitted and fixed in the dovetail groove and can move along the... The dovetail groove slides, the first fixed baffle is fixedly connected to one end of the base plate by the first fastening bolt, the second fixed baffle is fixedly connected to the other end of the base plate by the second fastening bolt, the first movable baffle is provided with a first trapezoidal hole in the middle, the first retaining ring is rotatably connected to the first trapezoidal hole, and the first retaining ring is fixedly connected to one end of the first adjusting bolt passing through the first adjusting screw hole. The second movable baffle is provided with a second trapezoidal hole in the middle, the second retaining ring is rotatably connected to the second trapezoidal hole, and the second retaining ring is fixedly connected to one end of the second adjusting bolt passing through the second adjusting screw hole.

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