Pump sealing element with high safety

Abstract

The sealing element comprises a waterproof shell, an annular installation groove is formed in the position, corresponding to an opening of the waterproof shell, of the inner wall of the waterproof shell, an annular cover plate is arranged in the annular installation groove, a convex shell is integrally formed on the top of the annular cover plate, and the convex shell is provided with a sealing ring. A pressing cylinder is arranged in the annular mounting groove and located above the annular cover plate, locking mechanisms for fixing the annular cover plate and the pressing cylinder are symmetrically mounted on the outer side of the waterproof shell, a lower supporting plate is in threaded connection with the inner side of the annular cover plate, and water absorption cotton is bonded to the inner side of the convex shell and located above the lower supporting plate. According to the high-safety sealing element for the pump, the structural design is reasonable, all the assemblies are connected in a clamping or threaded mode, disassembly and assembly are convenient, an internal motor is maintained, meanwhile, a multi-layer sealing structure is arranged, water is not prone to entering the sealing element, the situation that the internal motor is short-circuited is avoided, the safety performance is improved, and the service life of the sealing element is prolonged. And the use effect is excellent.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically to a pump seal with high safety. Background Technology

[0002] A search revealed a patent document CN201720912268.1 disclosing a "sealing component for a water pump," comprising a protective shell, a motor, a sealing cover plate, a sealing gasket, and a shock-absorbing spring. The tail end of the motor is fitted inside the protective shell, and the opening of the protective shell has multiple threaded connection holes evenly distributed. By setting the sealing mechanism on the side of the sealing cover plate, the sealing cover plate can be fixedly connected to the opening of the protective shell by bolts, thus making the water pump sealing component easy to install and use, and also convenient, simple, efficient, and quick to maintain.

[0003] This patent has some problems in actual use. It uses bolts to connect the sealing cover to the protective shell, which is prone to corrosion after long-term use. Moreover, when the internal motor is damaged by water or the water suction gasket fails, it requires tools to disassemble, which is very inconvenient. In addition, it does not have a multi-layer sealing structure, which makes it easy for water to enter and cause short circuits in the motor, posing certain safety hazards. To address these issues, we propose a high-safety pump seal to solve the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to provide a highly safe pump seal to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-safety pump seal, comprising a waterproof shell, an annular mounting groove being formed on the inner wall of the waterproof shell corresponding to its opening, an annular cover plate being provided in the annular mounting groove, a convex shell being integrally formed on the top of the annular cover plate, a clamping cylinder being provided in the annular mounting groove above the annular cover plate, a locking mechanism being symmetrically installed on the outer side of the waterproof shell for fixing the annular cover plate and the clamping cylinder, a lower support plate being threadedly connected to the inner side of the annular cover plate, absorbent cotton being adhered to the inner side of the convex shell above the lower support plate, a rotating shaft being rotatably connected inside the waterproof shell, the top end of the rotating shaft passing through the lower support plate and the absorbent cotton sequentially from bottom to top and extending to the outside of the convex shell, and a first sealing ring being installed on the top of the convex shell corresponding to the position of the rotating shaft.

[0006] Furthermore, the locking mechanism includes a side connecting shell, which is fixedly installed on the outer surface of the waterproof shell. A screw is provided on the left side of the side connecting shell, and a rotating block is fixedly connected to the right end of the screw through the interior of the side connecting shell. The screw is threadedly connected to the side connecting shell. A translation plate is movably connected to the outside of the rotating block. The outside of the translation plate is slidably connected to a groove on the inner wall of the side connecting shell through a guide slider. Locking rods and locking blocks are fixedly connected to the right side of the translation plate at positions corresponding to the annular cover plate and the pressing cylinder, respectively, for their fixation.

[0007] Furthermore, a first positioning block is symmetrically installed at the bottom of the inner wall of the annular mounting groove, and the first positioning block is inserted into the bottom of the annular cover plate. A second positioning block is symmetrically installed at the bottom of the clamping cylinder, and the second positioning block is inserted into the top of the annular cover plate.

[0008] Furthermore, a sealing ring is threadedly connected to the inner side of the clamping cylinder and above the annular cover plate, and a rotating handle is fixedly connected to the inner side of the sealing ring and the bottom of the lower support plate.

[0009] Furthermore, a second sealing ring is fixedly installed on the inner side of the lower support plate, and the inner sides of both the first and second sealing rings are in contact with the surface of the rotating shaft.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] During assembly, the absorbent cotton is first placed inside the convex shell. The lower support plate is then screwed into the convex shell using its threads, providing support for the absorbent cotton. The first positioning block is used for positioning. After the annular cover plate is inserted into the annular mounting groove, the rotating shaft will also pass through the top of the convex shell. The clamping cylinder is then inserted into the annular mounting groove, and its bottom second positioning block is inserted into the slot at the top of the annular cover plate. Rotating the screws on both sides, through the threaded connection with the side connecting shell, causes the rotating block to rotate and move towards the waterproof shell. The guide slider limits the movement, pushing the translation plate towards the waterproof shell. Lateral translation, locking rod and locking block are inserted into the annular cover plate and clamping cylinder respectively to form a fixed shape. Finally, they are screwed into the inner side of the clamping cylinder with the thread on the outside of the sealing ring. While providing a certain sealing effect, it further improves the stability of the annular cover plate installation. This high-safety pump seal has a reasonable structural design. The components are connected by snap-fit ​​or thread, which facilitates disassembly and assembly for maintenance of the internal motor. At the same time, a multi-layer sealing structure is set to prevent water from entering, thereby avoiding short circuits in the internal motor, improving safety performance, and having excellent performance. Attached Figure Description

[0012] Figure 1 This is a partial structural cross-sectional view of the present invention;

[0013] Figure 2 This is a cross-sectional view of the locking mechanism of this utility model;

[0014] Figure 3 This is a cross-sectional view of the annular cover plate and the convex shell of this utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the clamping cylinder of this utility model;

[0016] Figure 5 This is a partial three-dimensional structural diagram of the waterproof shell of this utility model.

[0017] In the diagram: 1 Waterproof shell, 2 Annular mounting groove, 3 Annular cover plate, 4 Protruding shell, 5 Pressing cylinder, 6 Locking mechanism, 61 Side connecting shell, 62 Screw, 63 Rotating block, 64 Translation plate, 65 Guide slider, 66 Locking rod, 67 Locking block, 7 Lower support plate, 8 Absorbent cotton, 9 Rotating shaft, 10 First sealing ring, 11 First positioning block, 12 Second positioning block, 13 Sealing pressure ring, 14 Second sealing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5A high-safety pump seal includes a waterproof housing 1. An annular mounting groove 2 is formed on the inner wall of the waterproof housing 1, corresponding to its opening. An annular cover plate 3 is installed within the annular mounting groove 2. An annular mechanism on the outer edge of the annular cover plate 3 engages with the interior of the annular mounting groove 2. This annular mounting structure provides a certain sealing effect. A convex shell 4 is integrally formed on the top of the annular cover plate 3. A clamping cylinder 5 is located within the annular mounting groove 2 and above the annular cover plate 3. The clamping cylinder 5 can be used to clamp and fix the annular cover plate 3 from above. A locking mechanism 6 is symmetrically installed on the outer side of the waterproof housing 1 to fix the annular cover plate 3 and the clamping cylinder 5. A lower threaded connection is formed on the inner side of the annular cover plate 3. A water-absorbing cotton 8 is adhered to the inner side of the support plate 7 and the convex shell 4, and is located above the lower support plate 7. The water-absorbing cotton 8 can absorb a small amount of water that seeps into the convex shell 4. After the water-absorbing cotton 8 has been soaked in water for a long time, the lower support plate 7 can be unscrewed and replaced. A rotating shaft 9 is rotatably connected inside the waterproof shell 1. A motor is installed inside the waterproof shell 1, and one end of the rotating shaft 9 is connected to the motor. The top of the rotating shaft 9 passes through the lower support plate 7 and the water-absorbing cotton 8 from bottom to top and extends to the outside of the convex shell 4. A first sealing ring 10 is installed on the top of the convex shell 4 at the position corresponding to the rotating shaft 9. The first sealing ring 10 can seal from the top position of the convex shell 4 to prevent water from seeping in from the gap between the convex shell 4 and the rotating shaft 9.

[0020] Specifically, the locking mechanism 6 includes a side connecting shell 61, which is fixedly installed on the outer surface of the waterproof shell 1. A screw 62 is provided on the left side of the side connecting shell 61. The right end of the screw 62 passes through the inside of the side connecting shell 61 and is fixedly connected to a rotating block 63. The screw 62 and the side connecting shell 61 are threadedly connected. A translation plate 64 is movably connected to the outside of the rotating block 63. The outside of the translation plate 64 is slidably connected to the groove on the inner wall of the side connecting shell 61 through a guide slider 65. A locking rod 66 and a locking block 67 are fixedly connected to the right side of the translation plate 64 at the positions corresponding to the annular cover plate 3 and the pressing cylinder 5, respectively.

[0021] Specifically, a first positioning block 11 is symmetrically installed at the bottom of the inner wall of the annular mounting groove 2. The first positioning block 11 is inserted into the bottom of the annular cover plate 3. A second positioning block 12 is symmetrically installed at the bottom of the clamping cylinder 5. The second positioning block 12 is inserted into the top of the annular cover plate 3. The first positioning block 11 and the second positioning block 12 can ensure that after the annular cover plate 3 and the clamping cylinder 5 are installed, the positioning holes on their outer sides are directly opposite the locking rod 66 and the locking block 67.

[0022] Specifically, a sealing ring 13 is threadedly connected to the inner side of the clamping cylinder 5 and above the annular cover plate 3. A rotating handle is fixedly connected to the inner side of the sealing ring 13 and the bottom of the lower support plate 7. After the outer thread of the sealing ring 13 is tightened to the inner side of the clamping cylinder 5, it not only provides a certain sealing effect but also further improves the stability of the installation of the annular cover plate 3. The rotating handle facilitates the rotation of the sealing ring 13 and the lower support plate 7.

[0023] Specifically, a second sealing ring 14 is fixedly installed on the inner side of the lower support plate 7. The second sealing ring 14 can prevent water from seeping into the interior of the waterproof shell 1 from the gap between the lower support plate 7 and the rotating shaft 9. The inner sides of the first sealing ring 10 and the second sealing ring 14 are both in contact with the surface of the rotating shaft 9.

[0024] This highly safe pump seal features a reasonable structural design, with each component connected by snap-fit ​​or threaded connections, facilitating disassembly and assembly for maintenance of the internal motor. It also incorporates a multi-layered sealing structure to prevent water ingress, thus avoiding short circuits in the internal motor, enhancing safety performance, and providing excellent performance.

[0025] Working principle: During assembly, the absorbent cotton 8 is first placed inside the convex shell 4. The thread on the surface of the lower support plate 7 is screwed into the inside of the convex shell 4 to support the absorbent cotton 8. The first positioning block 11 is used for positioning. After the annular cover plate 3 is inserted into the annular mounting groove 2, the rotating shaft 9 will also pass through the top of the convex shell 4. Then, the clamping cylinder 5 is inserted into the annular mounting groove 2. The second positioning block 12 at its bottom is inserted into the slot at the top of the annular cover plate 3. After rotating the screws 62 on both sides, the rotating block 63 is driven to rotate and move towards the waterproof shell 1 through the threaded connection with the side connecting shell 61. Through the limit of the guide slider 65, the translation plate 64 can be pushed to move towards the waterproof shell 1. The locking rod 66 and the locking block 67 are respectively inserted into the annular cover plate 3 and the clamping cylinder 5 to form a fixation. Finally, the threads on the outside of the sealing ring 13 are screwed into the inside of the clamping cylinder 5. While providing a certain sealing effect, the stability of the annular cover plate 3 installation is further improved. Similarly, when removing it, the above steps are simply reversed.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-safety pump seal, comprising a waterproof housing (1), characterized in that: The waterproof shell (1) has an annular mounting groove (2) on its inner wall corresponding to its opening. An annular cover plate (3) is provided in the annular mounting groove (2). A convex shell (4) is integrally formed on the top of the annular cover plate (3). A clamping cylinder (5) is provided in the annular mounting groove (2) above the annular cover plate (3). A locking mechanism (6) for fixing the annular cover plate (3) and the clamping cylinder (5) is symmetrically installed on the outer side of the waterproof shell (1). A lower support plate (7) is threadedly connected to the inner side of the annular cover plate (3). A water-absorbing cotton (8) is adhered to the inner side of the convex shell (4) above the lower support plate (7). A rotating shaft (9) is rotatably connected inside the waterproof shell (1). The top of the rotating shaft (9) passes through the lower support plate (7) and the water-absorbing cotton (8) from bottom to top and extends to the outside of the convex shell (4). A first sealing ring (10) is installed on the top of the convex shell (4) corresponding to the position of the rotating shaft (9).

2. The pump seal with high safety according to claim 1, characterized in that: The locking mechanism (6) includes a side connecting shell (61), which is fixedly installed on the outer surface of the waterproof shell (1). A screw (62) is provided on the left side of the side connecting shell (61). The right end of the screw (62) passes through the inside of the side connecting shell (61) and is fixedly connected to a rotating block (63). The screw (62) is threadedly connected to the side connecting shell (61). A translation plate (64) is movably connected to the outside of the rotating block (63). The outside of the translation plate (64) is slidably connected to the sliding groove on the inner wall of the side connecting shell (61) through a guide slider (65). A locking rod (66) and a locking block (67) are fixedly connected to the right side of the translation plate (64) at the positions corresponding to the annular cover plate (3) and the pressing cylinder (5) for fixing.

3. A high-safety pump seal according to claim 2, characterized in that: The bottom of the inner wall of the annular mounting groove (2) is symmetrically equipped with a first positioning block (11), which is inserted into the bottom of the annular cover plate (3). The bottom of the pressing cylinder (5) is symmetrically equipped with a second positioning block (12), which is inserted into the top of the annular cover plate (3).

4. A high-safety pump seal according to claim 3, characterized in that: A sealing ring (13) is threadedly connected to the inner side of the pressing cylinder (5) and above the annular cover plate (3). A rotating handle is fixedly connected to the inner side of the sealing ring (13) and the bottom of the lower support plate (7).

5. A high-safety pump seal according to claim 4, characterized in that: The inner side of the lower support plate (7) is fixedly installed with a second sealing ring (14), and the inner sides of the first sealing ring (10) and the second sealing ring (14) are both in contact with the surface of the rotating shaft (9).

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