Mechanical part cleaning equipment

By designing a mechanical parts cleaning equipment with a circulating water pump, filtration system, and quick-installation device, the problems of low cleaning efficiency, resource waste, and complex nozzle installation in traditional equipment have been solved, achieving efficient cleaning, resource conservation, and safe and reliable cleaning results.

CN224010597UActive Publication Date: 2026-03-20SOPHIE INTELLIGENT TECH (YANCHENG) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-03
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

Traditional mechanical parts cleaning equipment suffers from problems such as low cleaning efficiency, waste of resources, complex and time-consuming nozzle installation and disassembly, significant safety hazards, and high equipment maintenance costs.

Method used

A mechanical parts cleaning device was designed, comprising a circulating water pump, a filtration system, and a quick-installation device. The circulating water pump enables continuous supply of cleaning fluid and multi-stage filtration, the quick-installation device enables rapid installation and removal of the nozzles, and the limiting device ensures the stability and sealing of the nozzles.

Benefits of technology

It improves cleaning efficiency, reduces resource consumption, lowers operating costs, simplifies nozzle maintenance, and enhances equipment reliability and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses mechanical part cleaning equipment which comprises a cleaning box, a cleaning device is arranged in the cleaning box, the cleaning device comprises a drainage pipe, a circulating water pump, a circulating pipe, a corrugated pipe, a handle pipe and a spray head, the drainage pipe is arranged on one side of the cleaning box, the circulating water pump is installed on the side wall of the cleaning box, and the corrugated pipe is installed on the side wall of the cleaning box. The circulating pipe is connected with the water drainage pipe and the circulating water pump, the corrugated pipe is installed on the circulating water pump, the handle pipe is installed at the top end of the corrugated pipe, the spray head is installed at the top end of the handle pipe through the quick assembly device, and the quick assembly device comprises a clamping pipe, a clamping groove, a fixing sleeve, a clamping block, a locking sleeve, an abutting wheel and a threaded sleeve. The clamping groove is formed in the outer wall of the clamping pipe, the fixing sleeve is installed at the top end of the handle pipe, and the multiple sets of clamping blocks are rotationally installed on the fixing sleeve, so that the technical problems that in the background technology, the cleaning efficiency is low, resources are wasted, and the mounting and dismounting processes of the spray head are usually complex and time-consuming are solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical parts technical field more specifically, it relates to a mechanical parts cleaning equipment. BACKGROUND

[0002] In the prior art, in industrial production, the cleanliness of mechanical parts directly affects product quality and equipment performance, and traditional mechanical parts cleaning equipment often has problems such as low cleaning efficiency and resource waste, these devices usually adopt the cleaning method of unidirectional flow, and the cleaning liquid is directly discharged after use, which not only causes a large amount of waste of water resources and cleaning agent, but also may cause environmental pollution problems, in addition, due to the lack of effective circulation system, the impurities in the cleaning liquid cannot be filtered in time, which easily leads to secondary pollution of the parts, this cleaning method not only increases the operating cost of enterprises, but also is difficult to meet the requirements of modern industry on clean production and environmental protection, at the same time, the cleaning effect of traditional equipment is often not ideal, especially for parts with complex shape or serious pollution, the problem of incomplete cleaning is widespread, which affects the smooth progress of subsequent production processes.

[0003] And, in terms of maintenance and operation, the spray head system of traditional mechanical parts cleaning equipment also has many deficiencies, the spray head as the key component of the cleaning equipment, its installation and disassembly process is usually complex and time-consuming, which needs professional tools and skills, this not only increases the downtime of the equipment, reduces the production efficiency, but also increases the maintenance cost, more seriously, the traditional spray head fixing method is often difficult to adapt to the high-pressure cleaning environment, there is the risk of loosening or falling off, under the impact of high-pressure water flow, the unstable spray head may suddenly fall off, which not only affects the cleaning effect, but also may cause equipment damage or personnel injury, this safety hazard seriously restricts the application range and cleaning intensity of the cleaning equipment, makes some stubborn stains that need high-pressure cleaning difficult to remove effectively, in addition, frequent manual installation and disassembly also aggravates the wear and tear of the spray head and connecting parts, shortens the service life of the equipment, increases the equipment updating cost of enterprises. UTILITY MODEL CONTENTS

[0004] In view of the problems existing in the prior art, the utility model provides a mechanical parts cleaning equipment to solve the technical problems of low cleaning efficiency, resource waste and the process of spray head installation and disassembly being usually complex and time-consuming mentioned in the background art.

[0005] TECHNICAL SCHEME

[0006] To achieve the above object, the utility model provides the following technical scheme: A kind of mechanical parts cleaning equipment, including cleaning tank, cleaning device is arranged in the cleaning tank, the cleaning device includes drain pipe, circulating water pump, circulating pipe, bellows, pipe and spray head, the drain pipe is arranged in cleaning tank side, the circulating water pump is installed in cleaning tank side wall, the circulating pipe is connected drain pipe and circulating water pump, the bellows is installed on circulating water pump, the pipe is installed in bellows top end, the spray head is installed in pipe top end by quick mounting device, the quick mounting device includes clamping pipe, clamping groove, fixed sleeve, lock block, lock sleeve, stop wheel and screw sleeve, the clamping pipe is installed in spray head top end, the clamping groove is arranged in the outer wall of clamping pipe, the fixed sleeve is installed in pipe top end, the lock block is arranged with multiple rotationally installed on fixed sleeve, the lock sleeve is slidingly installed on the outer wall of fixed sleeve, the stop wheel is arranged with multiple installations on lock sleeve, the screw sleeve is rotationally installed on fixed sleeve and is connected with the top end of lock sleeve by screw thread.

[0007] The utility model further sets up, install the sieve plate in the cleaning tank, the setting effectively prevents that large particle impurity enters circulation system, reduces the risk of pipeline blockage, also reduces the burden of filtration system, prolongs the service life of filtration equipment.

[0008] The utility model further sets up, install the filter box on the circulating pipe, be equipped with filter block in the filter box, this design realizes multistage filtration of cleaning fluid, significantly improves the cleanliness of cleaning fluid, ensures the quality of cleaning fluid for circulation, reduces the replacement frequency of cleaning fluid, reduces operating cost.

[0009] The utility model further sets up, the inner wall of fixed sleeve is equipped with positioning groove, the positioning groove is equipped with multiple groups, the outer wall of clamping pipe is equipped with positioning strip, the positioning strip is equipped with multiple groups and is matched with multiple positioning grooves, this design ensures the accurate installation position of spray head, prevents misplacement or rotation in installation process, the setting of multiple positioning grooves and positioning strips increases the stability of connection, can bear greater working pressure.

[0010] The utility model further sets up, the top of clamping pipe is equipped with sealing ring, the setting effectively prevents that cleaning fluid leaks under high pressure, improves the sealing performance of equipment.

[0011] The utility model further sets up, the filter block is set as activated carbon block, this design not only improves the purity of cleaning fluid, but also can remove dissolved pollutants that can affect cleaning effect, prolongs the service life of cleaning fluid, reduces environmental pollution.

[0012] The utility model further sets up, the fixed sleeve outside sets up the stop device, the stop device includes elastic sheet, limit sleeve, press block and screw rod, the elastic sheet is provided with multiple groups and is installed in the outer wall of thread sleeve, the limit sleeve sets up in multiple the elastic sheet outside, the press block is provided with multiple groups and is installed in the inside of limit sleeve, the screw rod is provided with multiple groups and is rotatably installed on the fixed sleeve and is connected with the limit sleeve screw, this design ensures that the thread sleeve does not loosen in the fastening process, improves the stability of shower head installation, and the elastic sheet provides appropriate elastic pressure, and the press block and limit sleeve provide adjustable limiting function, so that the whole limiting process is more accurate and controllable.

[0013] The utility model further sets up, the fixed sleeve top end outer wall rotatably is equipped with the rotating sleeve, the rotating sleeve bottom end is equipped with the main gear, multiple the screw rod top end is equipped with the pinion, multiple the pinion all is engaged with main gear, this design realizes accurate synchronous control to multiple screw rods, ensures the even function of stop device. Beneficial effects

[0014] Compared with the prior art, the utility model provides a kind of mechanical parts cleaning equipment, with following beneficial effects:

[0015] 1, the beneficial effects of cleaning device reflect its efficient cleaning capacity and the function of recycling cleaning liquid, by circulating water pump, it is extracted from drain pipe and is transported to the spray head, ensure the continuous supply and recycling use of cleaning liquid, so not only reduce the consumption of cleaning liquid, also reduce environmental pollution, the design of corrugated pipe and tube allows the flexible adjustment of position and angle of spray head, so as to realize the overall cleaning of different shape and size parts, in addition, the use of filter box and filter block ensures the cleanliness of cleaning liquid, avoids the secondary pollution of impurities to parts.

[0016] 2, the beneficial effects of quick mounting device are that it is convenient to quickly install and dismount spray head, by the ingenious design of clamping pipe, clamping groove, fixed sleeve, clamping block, lock sleeve, stop wheel and thread sleeve, operating personnel can quickly complete the installation of spray head, improve maintenance and replacement efficiency, the setting of sealing ring ensures the sealing of connecting portion, prevents the leakage of cleaning liquid, this kind of quick installation design greatly reduces downtime, improves the use efficiency of cleaning equipment.

[0017] 3, the beneficial effects of limiting device are that it can accurately control the rotation of thread sleeve, so as to ensure the stability of spray head installation, by the cooperation of elastic sheet, limit sleeve, press block and screw rod, limiting device can effectively prevent the excessive rotation of thread sleeve, avoid damaging device, the design of rotating sleeve and main gear makes the limit sleeve can move up and down, so as to accurately control the rotation of screw rod, ensure the correct position and firmness of spray head, this design improves the reliability and durability of equipment, reduces maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic view of a mechanical part cleaning equipment in the utility model;

[0019] Figure 2 It is the connecting structure schematic view of quick mounting device and spray head in the utility model;

[0020] Figure 3 It is the sectional structure schematic view of filter box in the utility model;

[0021] Figure 4 It is the sectional structure schematic view of quick mounting mechanism in the utility model;

[0022] Figure 5 It is the sectional structure schematic view of thread sleeve and lock sleeve in the utility model;

[0023] Figure 6 It is the sectional structure schematic view of fixed sleeve and limiting device in the utility model.

[0024] In the drawing: 1, cleaning box; 2, drain pipe; 3, circulating water pump; 4, circulating pipe; 5, corrugated pipe; 6, pipe; 7, spray head; 8, clamping pipe; 9, clamping groove; 10, fixed sleeve; 11, clamping block; 12, lock sleeve; 13, abutting wheel; 14, thread sleeve; 15, sieve plate; 16, filter box; 17, filter block; 18, positioning groove; 19, positioning strip; 20, sealing ring; 21, elastic sheet; 22, limiting sleeve; 23, pressing block; 24, screw rod; 25, rotating sleeve; 26, main gear; 27, from gear. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0027] In the present application, unless otherwise specified, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravitational direction. Similarly, for the convenience of understanding and description, "left, right" are generally with respect to the left and right shown in the drawings; "inner, outer" refer to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0028] Please refer to Figures 1-6The utility model provides a kind of mechanical parts cleaning equipment, including cleaning tank 1, cleaning device is provided in cleaning tank 1, and cleaning device includes drain pipe 2, circulating water pump 3, circulating pipe 4, bellow 5, pipe 6 and shower head 7, drain pipe 2 is arranged in cleaning tank 1 side, circulating water pump 3 is installed in cleaning tank 1 side wall, circulating pipe 4 is connected drain pipe 2 with circulating water pump 3, bellow 5 is installed on circulating water pump 3, pipe 6 is installed at the top of bellow 5, shower head 7 is installed at the top of pipe 6 by quick mounting device, quick mounting device includes clamping pipe 8, clamping groove 9, fixed sleeve 10, clamping block 11, lock sleeve 12, abutting wheel 13 and threaded sleeve 14, clamping pipe 8 is installed at the top of shower head 7, clamping groove 9 is arranged in the outer wall of clamping pipe 8, fixed sleeve 10 is installed at the top of pipe 6, clamping block 11 is provided with multiple groups of rotation and is installed on fixed sleeve 10, lock sleeve 12 is slidably installed on the outer wall of fixed sleeve 10, abutting wheel 13 is provided with multiple groups of installation on lock sleeve 12, threaded sleeve 14 is rotationally installed on fixed sleeve 10 and is threadedly connected with the top of lock sleeve 12.

[0029] Screen plate 15 is installed in cleaning tank 1, and the screen plate 15 is installed inside the cleaning tank 1, for filtering large particle impurities generated in the cleaning process, and the screen plate 15 can also be used as a support platform for the parts, to facilitate uniform distribution and recovery of the cleaning liquid.

[0030] Filter box 16 is installed on circulating pipe 4, and filter block 17 is arranged in the filter box 16, the filter box 16 is installed on the circulating pipe 4, and the filter block 17 is arranged inside the filter box 16, for further filtering small impurities in the cleaning liquid, the combination of the filter box 16 and the filter block 17 can not only effectively remove suspended solids in water, but also adsorb part of the dissolved pollutants.

[0031] Positioning grooves 18 are formed in the inner wall of the fixed sleeve 10, the positioning grooves 18 are provided in multiple groups, positioning strips 19 are arranged on the outer wall of the clamping pipe 8, the positioning strips 19 are provided in multiple groups and are matched with the multiple positioning grooves 18, the fixed sleeve 10 and the clamping pipe 8 are precisely positioned by the cooperation of the multiple positioning grooves 18 and the positioning strips 19, and the multiple positioning grooves 18 and the positioning strips 19 increase the stability of the connection.

[0032] A sealing ring 20 is arranged at the top of the clamping pipe 8, and the sealing ring 20 is installed at the top of the clamping pipe 8 to seal the connection, and the sealing ring 20 effectively prevents leakage of the cleaning liquid under high pressure.

[0033] The filter block 17 is made of activated carbon block, and the activated carbon has excellent adsorption capacity, which can effectively remove organic matter, odor and part of heavy metal ions in water.

[0034] In this embodiment, first in the cleaning tank 1 quantitative addition of cleaning fluid, water pump from the drain pipe 2 pumping cleaning fluid, through the circulation pipe 4 delivery, cleaning fluid continues through the corrugated pipe 5 to the pipe 6, and finally from the nozzle 7, the nozzle 7 can be adjusted according to the angle of need to ensure comprehensive cleaning parts, after cleaning the liquid falls into the sieve plate 15 at the bottom of the cleaning tank 1, sieve plate 15 filter out large particles of impurities, and then the cleaning tank 1 in the cleaning fluid through the drain pipe 2 and circulation pipe 4 delivery, process through the filter box 16, and by the filter block 17 of the impurities in the cleaning fluid filtering, when the need to install the nozzle 7, first the nozzle 7 top joint pipe 8 inserted into the fixed sleeve 10 at the top of the pipe 6, the positioning strip 19 of the outer wall of the joint pipe 8 and the positioning groove 18 of the inner wall of the fixed sleeve 10 align to ensure the correct position, rotate the threaded sleeve 14, and the top of the lock sleeve 12 threaded connection, control the lock sleeve 12 movement, so that the lock sleeve 12 set on the multiple sets of resistance wheel 13 on the outer end of the multiple sets of clamping block 11 to exert the pressure, so that the multiple sets of clamping block 11 clamping in the clamping groove 9 outside the wall of the clamping block, and then through the limiting device for fixing the threaded sleeve 14, the sealing ring 20 at the top of the joint pipe 8 to ensure the sealing of the connection, the disassembly process is the reverse order of operation.

[0035] Please see Figures 4-5 , as a kind of mechanical parts cleaning equipment embodiment: the fixed sleeve 10 outside is provided with a limiting device, the limiting device includes a plurality of sets of elastic sheet 21, limiting sleeve 22, pressing block 23 and screw 24, the elastic sheet 21 is provided with a plurality of sets of installation on the outer wall of the threaded sleeve 14, the limiting sleeve 22 is arranged outside the plurality of elastic sheet 21, the pressing block 23 is provided with a plurality of sets of installation in the inner side of the limiting sleeve 22, the screw 24 is provided with a plurality of sets of rotationally installed on the fixed sleeve 10 and is screw connected with the limiting sleeve 22, the elastic sheet 21 provides appropriate elastic pressure, the pressing block 23 and the limiting sleeve 22 provide adjustable limiting function, so that the whole limiting process is more accurate and controllable.

[0036] The outer wall of the fixed sleeve 10 is rotatably provided with a rotating sleeve 25, the main gear 26 is installed at the bottom of the rotating sleeve 25, a plurality of screws 24 are provided with a plurality of from gear 27 at the top, a plurality of from gear 27 are engaged with the main gear 26, the main gear 26 is driven to rotate by rotating the rotating sleeve 25, thereby driving a plurality of from gear 27 to rotate synchronously, realizing the synchronous adjustment of a plurality of screws 24, the operator only needs to rotate one rotating sleeve 25, which can adjust a plurality of screws 24 at the same time.

[0037] More specifically, in operation, the rotating sleeve 25 is rotated to drive the main gear 26 to rotate, the main gear 26 is engaged with the slave gears 27 at the top ends of the plurality of screws 24 to drive the screws 24 to rotate synchronously, the rotation of the screws 24 drives the limiting sleeve 22 to move up and down, the pressing block 23 inside the limiting sleeve 22 blocks the opposite direction of the elastic sheet 21, so that the threaded sleeve 14 will not be loosened during the tightening process, and reverse rotation of the rotating sleeve 25 can drive the screws 24 and the limiting sleeve 22 to be screwed with each other through the main gear 26 and the slave gears 27, so that the limiting sleeve 22 moves to release the restriction of the plurality of elastic sheets 21 on the outer wall of the threaded sleeve 14, which ensures the accuracy and stability of the rotation of the threaded sleeve 14 and prevents the device from being damaged due to excessive rotation.

[0038] In summary, when the overall device is in use or operation: first, a certain amount of cleaning liquid is added into the cleaning tank 1, the water pump draws the cleaning liquid from the drain pipe 2, transports it through the circulating pipe 4, and the cleaning liquid continues to flow to the pipe 6 through the corrugated pipe 5, and finally is sprayed out from the spray head 7, which can be adjusted in angle as needed to ensure comprehensive cleaning of the parts, and the cleaned liquid falls onto the sieve plate 15 at the bottom of the cleaning tank 1, which filters out large particles of impurities, and then the cleaning liquid in the cleaning tank 1 is transported again through the drain pipe 2 and the circulating pipe 4, during which it passes through the filter box 16 and is filtered by the filter block 17, when it is necessary to install the spray head 7, first, the clamping pipe 8 at the top end of the spray head 7 is inserted into the fixed sleeve 10 at the top end of the pipe 6, the positioning strip 19 on the outer wall of the clamping pipe 8 is aligned with the positioning groove 18 on the inner wall of the fixed sleeve 10 to ensure correct position, the threaded sleeve 14 is rotated and screwed with the top end of the lock sleeve 12, the lock sleeve 12 is controlled to move, a plurality of sets of abutting wheels 13 provided on the lock sleeve 12 apply downward pressure to the outer ends of a plurality of sets of clamping blocks 11, so that the clamping blocks 11 are clamped in the clamping grooves 9 provided on the outer wall of the clamping block, and then the threaded sleeve 14 is fixed by the limiting device, and the sealing ring 20 at the top end of the clamping pipe 8 ensures the sealing of the connection, and the disassembly process is in reverse order of the installation.

[0039] In operation, the rotating sleeve 25 is rotated to drive the main gear 26 to rotate, the main gear 26 is engaged with the slave gears 27 at the top ends of the plurality of screws 24 to drive the screws 24 to rotate synchronously, the rotation of the screws 24 drives the limiting sleeve 22 to move up and down, the pressing block 23 inside the limiting sleeve 22 blocks the opposite direction of the elastic sheet 21, so that the threaded sleeve 14 will not be loosened during the tightening process, and reverse rotation of the rotating sleeve 25 can drive the screws 24 and the limiting sleeve 22 to be screwed with each other through the main gear 26 and the slave gears 27, so that the limiting sleeve 22 moves to release the restriction of the plurality of elastic sheets 21 on the outer wall of the threaded sleeve 14, which ensures the accuracy and stability of the rotation of the threaded sleeve 14 and prevents the device from being damaged due to excessive rotation.

[0040] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical parts cleaning device, comprising a cleaning tank (1), characterized in that: The cleaning tank (1) is equipped with a cleaning device, which includes a drain pipe (2), a circulating water pump (3), a circulating pipe (4), a corrugated pipe (5), a handle pipe (6), and a nozzle (7). The drain pipe (2) is located on one side of the cleaning tank (1), the circulating water pump (3) is installed on the side wall of the cleaning tank (1), the circulating pipe (4) connects the drain pipe (2) and the circulating water pump (3), the corrugated pipe (5) is installed on the circulating water pump (3), the handle pipe (6) is installed at the top of the corrugated pipe (5), and the nozzle (7) is installed at the top of the handle pipe (6) by a quick-installation device. The quick-installation device includes a clamping pipe (8) and a clamping pipe (9). The nozzle includes a groove (9), a fixed sleeve (10), a locking block (11), a locking sleeve (12), a stop wheel (13), and a threaded sleeve (14). The locking tube (8) is installed on the top of the nozzle (7). The locking groove (9) is located on the outer wall of the locking tube (8). The fixed sleeve (10) is installed on the top of the handle (6). The locking block (11) is provided with multiple sets of rotating installations on the fixed sleeve (10). The locking sleeve (12) is slidably installed on the outer wall of the fixed sleeve (10). The stop wheel (13) is provided with multiple sets of installations on the locking sleeve (12). The threaded sleeve (14) is rotatably installed on the fixed sleeve (10) and threadedly connected to the top of the locking sleeve (12).

2. The mechanical parts cleaning equipment according to claim 1, characterized in that: The cleaning tank (1) is equipped with a sieve plate (15).

3. The mechanical parts cleaning equipment according to claim 2, characterized in that: A filter box (16) is installed on the circulation pipe (4), and a filter block (17) is provided inside the filter box (16).

4. The mechanical parts cleaning equipment according to claim 3, characterized in that: The inner wall of the fixed sleeve (10) is provided with a positioning groove (18), and there are multiple sets of positioning grooves (18). The outer wall of the snap tube (8) is provided with a positioning strip (19), and there are multiple sets of positioning strips (19) that are adapted to the multiple sets of positioning grooves (18).

5. A mechanical parts cleaning device according to claim 4, characterized in that: The top of the card tube (8) is provided with a sealing ring (20).

6. A mechanical parts cleaning device according to any one of claims 3-5, characterized in that: The filter block (17) is set as an activated carbon block.

7. A mechanical parts cleaning device according to claim 6, characterized in that: The fixed sleeve (10) is provided with a limiting device on its outer side. The limiting device includes an elastic sheet (21), a limiting sleeve (22), a pressure block (23), and a screw (24). The elastic sheet (21) is provided with multiple sets installed on the outer wall of the threaded sleeve (14). The limiting sleeve (22) is provided on the outer side of multiple sets of the elastic sheet (21). The pressure block (23) is provided with multiple sets installed on the inner side of the limiting sleeve (22). The screw (24) is provided with multiple sets rotatably installed on the fixed sleeve (10) and threadedly connected to the limiting sleeve (22).

8. A mechanical parts cleaning device according to claim 7, characterized in that: The top outer wall of the fixed sleeve (10) is provided with a rotating sleeve (25), and the bottom end of the rotating sleeve (25) is provided with a main gear (26). The top ends of the multiple sets of screws (24) are fixed with driven gears (27), and the multiple sets of driven gears (27) mesh with the main gears (26).