A practical leak-proof water pump
By separating the power and execution design and optimizing the motion conversion, the problems of leak-proof pump seal wear and cylinder wall wear have been solved, resulting in a longer service life and greater safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DANJIANGKOU SHICHENG AUTO PARTS IND & TRADE CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-07-03
Smart Images

Figure CN224453114U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-leakage pump technology, specifically to a practical anti-leakage pump. Background Technology
[0002] Leak-proof pumps are specialized pumps designed specifically to solve liquid leakage problems. Their core advantage lies in achieving zero-leakage operation through multiple sealing technologies. Taking the ProWock series as an example, its pump cover uses vacuum sealing technology, combined with a special material isolator, which not only prevents high-pressure liquid leakage but also effectively intercepts impurities to avoid blockage, extending its service life by more than three times compared to traditional pumps. In the chemical industry, Shanghai Yanai Pump & Valve's leak-proof chemical pumps use a magnetic drive principle, transmitting power through magnetic field coupling between inner and outer magnetic rotors, completely isolating the pump shaft from contact with the medium. This allows for the stable delivery of highly corrosive liquids such as sulfuric acid and hydrochloric acid, with operating noise below 60 decibels.
[0003] A search revealed that CN209654182U discloses a practical leak-proof water pump, comprising a pump body, an inlet valve, and an outlet valve. A motor is located on the right side of the pump body cavity, a motor gear is located at the left end of the motor, and an eccentric gear is located to the left of the motor gear. A cylinder is located at the left end of the pump body, and a piston body is installed inside the cylinder. A transmission rod is located in the center of the piston body, and the right end of the transmission rod is sleeved on the eccentric gear shaft. The right end of the transmission rod is fixedly connected to the shaft hole in the middle of the eccentric gear through the gear shaft. This practical leak-proof water pump utilizes a motor to drive the motor gear, which in turn drives the eccentric gear. The eccentric gear drives the connecting rod and the piston body to reciprocate, causing a change in the cylinder volume, drawing water in through the inlet valve, thus forming a sealed cavity within the pump body and preventing water from entering the motor. The overall structure is simple, effectively preventing leakage and greatly improving the safety of the water pump.
[0004] The aforementioned practical anti-leakage water pump relies on an eccentric gear to directly drive the piston rod, resulting in excessive lateral force on the piston, accelerating the wear of the sealing ring. At the same time, the piston's movement trajectory is singular and cannot adaptively adjust its yaw, making it prone to uneven wear of the cylinder wall due to assembly errors. Utility Model Content
[0005] This invention proposes a practical leak-proof water pump that solves the problems of accelerated wear of the sealing ring and uneven wear of the cylinder wall caused by assembly errors in the prior art.
[0006] The technical solution of this utility model is as follows: a practical leak-proof water pump, including a mounting plate, on the front of which the water pump body is fixedly mounted;
[0007] The drive assembly is located in the middle of the mounting plate;
[0008] The drive assembly includes a motor that is fixedly mounted on the back of the mounting plate;
[0009] The drive assembly also includes a turntable capable of rotating horizontally under the drive of the drive assembly;
[0010] Linkage components are installed on the outside of the turntable;
[0011] A reciprocating drive component is installed on the side of the linkage component away from the turntable;
[0012] The reciprocating drive assembly includes a sleeve that is fixedly connected to the telescopic end of the water pump body and can drive the telescopic end of the water pump body to achieve reciprocating vertical movement.
[0013] Preferably, the driving component further includes:
[0014] A first rotating shaft fixedly connected to the output end of the motor;
[0015] The first gear disk is fixedly connected to the outside of the first rotating shaft.
[0016] Preferably, the driving component further includes:
[0017] The first bearing is located in the middle of the mounting plate;
[0018] The outer ring of the first bearing is fixedly connected to the mounting plate;
[0019] A second rotating shaft is fixedly connected to the inner ring of the first bearing.
[0020] Preferably, the driving component further includes:
[0021] A second geared disc is fixedly connected to one end of the second rotating shaft;
[0022] The second toothed disc is in contact with the first toothed disc and is rotatably connected; the other end of the second rotating shaft is fixedly connected to the turntable.
[0023] Preferably, the linkage component includes:
[0024] A first rotating rod is fixedly connected to the front edge of the turntable;
[0025] A second bearing is located on the outside of the first rotating rod;
[0026] The inner ring of the second bearing is fixedly connected to the first rotating rod.
[0027] Preferably, the linkage component further includes:
[0028] A connecting plate fixedly connected to the outer ring of the second bearing;
[0029] The third bearing is installed at the slot on one side of the connecting plate;
[0030] The outer ring of the third bearing is fixedly connected to the connecting plate.
[0031] Preferably, the linkage component further includes:
[0032] The second rotating rod is fixedly connected to the inner ring of the third bearing.
[0033] Preferably, the reciprocating drive component includes:
[0034] A limiting seat fixedly connected to the front side of the mounting plate;
[0035] The guide grooves are symmetrically opened on the inner wall of the limiting seat.
[0036] Preferably, the reciprocating drive component further includes:
[0037] A slide seat located inside the limiting seat;
[0038] The slide block and the sleeve are fixedly connected;
[0039] The top of the slide block is fixedly connected to the second rotating rod.
[0040] Preferably, the reciprocating drive component further includes:
[0041] symmetrically rotating ball bearings connected to both sides of the slide block;
[0042] The slide block is slidably connected to the limit seat at the rail groove via ball bearings.
[0043] The beneficial effects of this utility model are as follows:
[0044] 1. Power-Execution Separation Design: The motor indirectly drives the water pump piston through a gear set → turntable → linkage mechanism, isolating the motor from the water pump body and eliminating the risk of water entering the motor.
[0045] II. Motion Conversion Optimization: Turntable rotation → connecting plate hinge → slide vertical linear motion diagram, eliminating piston lateral force and reducing seal wear.
[0046] 3. Improved guiding accuracy: The limit seat and ball guide rail ensure that the slide moves purely vertically, avoiding uneven wear of the seal caused by wobble. Attached Figure Description
[0047] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0048] Figure 1 This is a side view of the overall device of this utility model;
[0049] Figure 2 This is a front view of the overall device of this utility model;
[0050] Figure 3 This is a schematic diagram showing the connection between the linkage component and the reciprocating drive component of this utility model;
[0051] Figure 4 This is a schematic diagram showing the disassembled linkage component and reciprocating drive component of this utility model;
[0052] In the diagram: 1. Mounting plate; 11. Pump body; 2. Drive assembly; 21. Motor; 22. First rotating shaft; 221. First gear plate; 23. Second rotating shaft; 231. Second gear plate; 232. First bearing; 24. Turntable; 3. Linkage assembly; 31. Connecting plate; 32. First rotating rod; 321. Second bearing; 33. Second rotating rod; 331. Third bearing; 4. Reciprocating drive assembly; 41. Slide; 411. Ball bearing; 42. Sleeve; 43. Limit seat; 431. Rail groove. Detailed Implementation
[0053] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0054] Please see Figures 1-4 This utility model provides a technical solution: a practical leak-proof water pump, including a mounting plate 1, on the front of which a water pump body 11 is fixedly mounted;
[0055] The drive assembly 2 is located in the middle of the mounting plate 1;
[0056] Drive assembly 2 includes a motor 21 that is fixedly mounted on the back of mounting plate 1;
[0057] The drive assembly 2 also includes a turntable 24 that can rotate horizontally under the drive of the drive assembly 2;
[0058] Linkage component 3 is located on the outside of turntable 24;
[0059] The reciprocating push component 4 is located on the side of the linkage component 3 away from the turntable 24;
[0060] The reciprocating drive assembly 4 includes a sleeve 42 that is fixedly connected to the telescopic end of the water pump body 11 and can drive the telescopic end of the water pump body 11 to achieve reciprocating vertical movement.
[0061] This design addresses the problems of accelerated seal wear and cylinder wall wear caused by assembly errors in existing technologies through power-actuation separation design and motion conversion optimization.
[0062] Please see Figures 1-4 Driver component 2 also includes:
[0063] The first rotating shaft 22 is fixedly connected to the output end of the motor 21;
[0064] The first gear plate 221 is fixedly connected to the outside of the first rotating shaft 22.
[0065] Driver component 2 also includes:
[0066] The first bearing 232 is located in the middle of the mounting plate 1;
[0067] The outer ring of the first bearing 232 is fixedly connected to the mounting plate 1;
[0068] The second rotating shaft 23 is fixedly connected to the inner ring of the first bearing 232.
[0069] Driver component 2 also includes:
[0070] The second gear disk 231 is fixedly connected to one end of the second rotating shaft 23;
[0071] The second gear disk 231 is in contact with the first gear disk 221 and is meshed and rotatably connected; the other end of the second rotating shaft 23 is fixedly connected to the turntable 24.
[0072] Linkage component 3 includes:
[0073] The first rotating rod 32 is fixedly connected to the front edge of the turntable 24;
[0074] The second bearing 321 is disposed on the outer side of the first rotating rod 32;
[0075] The inner ring of the second bearing 321 is fixedly connected to the first rotating rod 32.
[0076] Linkage component 3 also includes:
[0077] The connecting plate 31 is fixedly connected to the outer ring of the second bearing 321;
[0078] A third bearing 331 is installed at a slot on one side of the connecting plate 31;
[0079] The outer ring of the third bearing 331 is fixedly connected to the connecting plate 31.
[0080] Linkage component 3 also includes:
[0081] The second rotating rod 33 is fixedly connected to the inner ring of the third bearing 331.
[0082] Reciprocating drive component 4 includes:
[0083] The limiting seat 43 is fixedly connected to the front of the mounting plate 1;
[0084] The track grooves 431 are symmetrically opened on the inner wall of the limiting seat 43.
[0085] Reciprocating drive component 4 also includes:
[0086] A slide 41 is located inside the limiting seat 43;
[0087] The slide block 41 and the sleeve 42 are fixedly connected;
[0088] The top of the slide block 41 is fixedly connected to the second rotating rod 33.
[0089] Reciprocating drive component 4 also includes:
[0090] The ball bearings 411 are symmetrically rotated and connected to both sides of the slide block 41;
[0091] The slide block 41 is slidably connected to the limiting seat 43 at the rail groove 431 via ball bearings 411;
[0092] By starting the motor 21, the first rotating shaft 22 and the first gear disk 221 can be driven to rotate. Under the meshing and rotation of the first gear disk 221 and the second gear disk 231, the first bearing 232 located inside the second gear disk 231 can drive the turntable 24 to rotate on the front of the mounting plate 1. The first bearing 232 between the second rotating shaft 23 and the mounting plate 1 in this design can increase the smoothness of rotation.
[0093] When the turntable 24 rotates, the first rotating rod 32 located on the outer side of the turntable 24 can drive the connecting plate 31 and the slide 41 to slide within the limiting seat 43. This design can convert the rotational motion of the turntable 24 driven by the motor 21 into reciprocating linear motion. In particular, this design provides a second bearing 321 and a third bearing 331 on both sides of the connecting plate 31 to increase the smoothness of rotation. In this design, the slide 41 is limited and slid at the limiting seat 43 and the rail groove 431 by the ball bearing 411. This design can avoid the positional deviation of the slide 41 during the reciprocating vertical movement, thereby effectively increasing the service life of the slide 41 and the water pump body 11.
[0094] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A practical water leakage proof pump comprising a mounting plate (1) characterized in that: The water pump body (11) is fixedly installed on the front of the mounting plate (1); The drive assembly (2) is located in the middle of the mounting plate (1); The drive assembly (2) includes a motor (21) fixedly mounted on the back of the mounting plate (1); The drive assembly (2) also includes a turntable (24) that can rotate horizontally under the drive of the drive assembly (2); Linkage assembly (3) is located on the outside of the turntable (24); A reciprocating push component (4) is disposed on the side of the linkage component (3) away from the turntable (24); The reciprocating drive assembly (4) includes a sleeve (42) that is fixedly connected to the telescopic end of the water pump body (11) and can drive the telescopic end of the water pump body (11) to achieve reciprocating vertical movement.
2. A practical water-tight pump according to claim 1, characterized in that The driving component (2) also includes: The first rotating shaft (22) is fixedly connected to the output end of the motor (21); The first gear plate (221) is fixedly connected to the outside of the first rotating shaft (22).
3. A practical water-tight pump according to claim 1, characterized in that, The driving component (2) also includes: The first bearing (232) is located in the middle of the mounting plate (1); The outer ring of the first bearing (232) is fixedly connected to the mounting plate (1); A second rotating shaft (23) is fixedly connected to the inner ring of the first bearing (232).
4. A practical water-tight pump according to claim 3, characterized in that The driving component (2) also includes: A second gear disk (231) is fixedly connected to one end of the second rotating shaft (23); The second toothed disc (231) is in contact with the first toothed disc (221) and is in a meshing rotatable connection; The other end of the second rotating shaft (23) is fixedly connected to the turntable (24).
5. A practical water-tight pump according to claim 1, characterized in that, The linkage component (3) includes: A first rotating rod (32) is fixedly connected to the front edge of the turntable (24); A second bearing (321) is provided on the outside of the first rotating rod (32); The inner ring of the second bearing (321) is fixedly connected to the first rotating rod (32).
6. A practical water-tight pump according to claim 5, characterized in that The linkage component (3) also includes: A connecting plate (31) is fixedly connected to the outer ring of the second bearing (321); The third bearing (331) is installed at the slot on one side of the connecting plate (31); The outer ring of the third bearing (331) is fixedly connected to the connecting plate (31).
7. A practical water-tight pump according to claim 6, characterized in that The linkage component (3) also includes: The second rotating rod (33) is fixedly connected to the inner ring of the third bearing (331).
8. A practical water-tight pump according to claim 1, characterized in that, The reciprocating drive component (4) includes: A limiting seat (43) is fixedly connected to the front of the mounting plate (1); The guide groove (431) is symmetrically opened on the inner wall of the limiting seat (43).
9. A practical water-tight pump according to claim 8, characterized in that The reciprocating drive component (4) also includes: A slide (41) is provided inside the limiting seat (43); The slide (41) and the sleeve (42) are fixedly connected; The top of the slide block (41) is fixedly connected to the second rotating rod (33).
10. A practical water-tight pump according to claim 9, characterized in that The reciprocating drive component (4) also includes: The ball bearings (411) are symmetrically rotated on both sides of the slide (41); The slide (41) is slidably connected to the limiting seat (43) at the rail groove (431) by ball bearings (411).