Sealing structure of plastic pump

Abstract

The utility model provides a sealing structure of a plastic pump, and belongs to the technical field of water pump instruments. The plastic pump solves the problems that an existing plastic pump is poor in sealing performance, and once water and particles enter the plastic pump, a motor cannot operate normally, a bearing is damaged, noise is increased and the like. The sealing structure of the plastic pump comprises a plastic pump body, the plastic pump body comprises a base, a motor assembly and a sealing cover, the motor assembly is sleeved with the sealing cover, the sealing cover is detachably connected with the base, a supporting sealing seat is further arranged between the sealing cover and the base, and a first sealing structure is arranged between the sealing seat and the base; and a second sealing structure and a third sealing structure are arranged between the sealing cover and the supporting sealing seat. The utility model has the advantage that the sealing performance is higher than that of other plastic pumps.

Description

Technical Field

[0001] This utility model belongs to the field of water pump equipment technology, and specifically relates to a sealing structure for a plastic pump. Background Technology

[0002] Plastic pumps are a member of the water pump family. Practical use shows that these pumps have advantages such as corrosion resistance, wear resistance, high temperature resistance, non-aging, high mechanical strength, stable operation, advanced and reasonable structure, strict and reliable sealing performance, convenient disassembly and maintenance, and long service life.

[0003] However, existing plastic pumps generally have poor sealing performance. Once water or particulate matter gets in, it can easily cause the motor to malfunction, damage the bearings, and increase noise. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a sealing structure for a plastic pump.

[0005] The objective of this utility model can be achieved through the following technical solution: a sealing structure for a plastic pump, comprising a plastic pump body, the plastic pump body comprising a base, a motor assembly and a sealing cover, the sealing cover being fitted over the motor assembly, the sealing cover being detachably connected to the base, a supporting sealing seat being provided between the sealing cover and the base, a first sealing structure being provided between the sealing seat and the base, and a second sealing structure and a third sealing structure being provided between the sealing cover and the supporting sealing seat.

[0006] The working principle of this utility model is as follows: During production, the support sealing seat is first installed on the base, then the motor assembly is installed on the support sealing seat, and finally the sealing cover is installed on the base. The support sealing seat also serves to support the motor assembly. By setting the first sealing structure, the second sealing structure and the third sealing structure, it is ensured that external water and particles cannot enter the inside of the sealing cover, ensuring that the motor assembly can operate normally.

[0007] In the sealing structure of the plastic pump described above, the first sealing structure includes an extended sealing ring, which is disposed on the sealing cover. The base is provided with multiple threaded grooves, and the extended sealing ring is provided with multiple first threaded holes. The extended sealing ring and the base are detachably connected by threaded parts.

[0008] In the sealing structure of the plastic pump described above, the supporting sealing seat is provided with a plurality of second threaded holes, which are located between the threaded groove and the first threaded hole.

[0009] In the above-mentioned sealing structure of the plastic pump, the second sealing structure includes a plug, a sealing ring, and a slot on the sealing cover. The plug is used to insert into the slot, and the sealing ring is disposed between the plug and the slot.

[0010] In the sealing structure of the plastic pump described above, two elastic protruding rings are provided on both sides of the sealing ring near the insert and the slot.

[0011] In the sealing structure of the plastic pump described above, the third sealing structure includes two sealing protrusions disposed on the supporting sealing seat.

[0012] In the sealing structure of the plastic pump described above, an extension block is provided at the bottom of the support sealing seat, and the extension block is used to insert into the base.

[0013] Compared with existing technologies, this invention has the advantage of superior sealing performance compared to other plastic pumps. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0015] Fig. 2 This is a schematic diagram of the structure of the support sealing seat of this utility model.

[0016] Fig. 3 This is a schematic diagram of the sealing ring of this utility model.

[0017] In the diagram, 1. Plastic pump body; 2. Base; 3. Motor assembly; 4. Sealing cover; 5. Supporting sealing seat; 6. First sealing structure; 7. Second sealing structure; 8. Third sealing structure; 9. Extended sealing ring; 10. Threaded groove; 11. First threaded hole; 12. Second threaded hole; 13. Insert block; 14. Sealing ring; 15. Slot; 16. Elastic convex ring; 17. Sealing convex ring; 18. Extension block. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figs. 1-3 As shown, the sealing structure of this plastic pump includes a plastic pump body 1, which includes a base 2, a motor assembly 3, and a sealing cover 4. The sealing cover 4 is used to fit over the motor assembly 3. The sealing cover 4 is detachably connected to the base 2. A supporting sealing seat 5 is also provided between the sealing cover 4 and the base 2. A first sealing structure 6 is provided between the sealing seat and the base 2. A second sealing structure 7 and a third sealing structure 8 are provided between the sealing cover 4 and the supporting sealing seat 5.

[0020] To elaborate further, the first sealing structure 6 includes an extended sealing ring 9, which is disposed on the sealing cover 4. The base 2 is provided with multiple threaded grooves 10, and the extended sealing ring 9 is provided with multiple first threaded holes 11. The extended sealing ring 9 and the base 2 are detachably connected by threaded parts. This arrangement is used for the first sealing protection. The installation via threaded parts facilitates quick installation and disassembly for maintenance.

[0021] To elaborate further, the support sealing seat 5 is provided with a plurality of second threaded holes 12, which are located between the threaded groove 10 and the first threaded hole 11. This arrangement is used to ensure that the support sealing seat 5 can also be fixed after the sealing cover 4 is installed.

[0022] To elaborate further, the second sealing structure 7 includes an insert 13, a sealing ring 14, and a slot 15 on the supporting sealing seat 5, all disposed on the sealing cover 4. The insert 13 is used to insert into the slot 15, and the sealing ring 14 is disposed between the insert 13 and the slot 15. This configuration provides a second layer of sealing protection. At the same time, the sealing ring 14 has a certain degree of elasticity, which reduces the gap between the insert 13 and the slot 15.

[0023] To elaborate further, two elastic protruding rings 16 are provided on both sides of the sealing ring near the insert 13 and the slot 15. This arrangement is used to further increase the sealing performance of the second sealing structure 7.

[0024] To elaborate further, the third sealing structure 8 includes two sealing protrusions 17 disposed on the supporting sealing seat 5, which serve as a third layer of sealing protection.

[0025] To elaborate further, the bottom of the support sealing seat 5 is provided with an extension block 18, which is used to insert into the base 2. This setting serves two purposes: firstly, it supports the installation and positioning of the sealing seat 5; secondly, it allows water or particles that may enter through the gaps to enter the space below and not enter the click component.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0027] Although this document uses a large number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A sealing structure for a plastic pump, characterized in that, The pump body (1) includes a base (2), a motor assembly (3) and a sealing cover (4). The sealing cover (4) is used to fit over the motor assembly (3). The sealing cover (4) is detachably connected to the base (2). A supporting sealing seat (5) is provided between the sealing cover (4) and the base (2). A first sealing structure (6) is provided between the sealing seat and the base (2). A second sealing structure (7) and a third sealing structure (8) are provided between the sealing cover (4) and the supporting sealing seat (5).

2. The sealing structure of a plastic pump according to claim 1, characterized in that, The first sealing structure (6) includes an extended sealing ring (9), which is disposed on the sealing cover (4). The base (2) is provided with a plurality of threaded grooves (10), and the extended sealing ring (9) is provided with a plurality of first threaded holes (11). The extended sealing ring (9) and the base (2) are detachably connected by threaded parts.

3. The sealing structure of a plastic pump according to claim 2, characterized in that, The support sealing seat (5) is provided with a plurality of second threaded holes (12), which are located between the threaded groove (10) and the first threaded hole (11).

4. The sealing structure of a plastic pump according to claim 3, characterized in that, The second sealing structure (7) includes a plug (13) disposed on the sealing cover (4), a sealing ring (14) and a slot (15) disposed on the support sealing seat (5). The plug (13) is used to insert into the slot (15), and the sealing ring (14) is disposed between the plug (13) and the slot (15).

5. The sealing structure of a plastic pump according to claim 4, characterized in that, The sealing ring (14) has two elastic protruding rings (16) on both sides near the insert (13) and the slot (15).

6. The sealing structure of a plastic pump according to claim 5, characterized in that, The third sealing structure (8) includes two sealing protrusions (17) disposed on the support sealing seat (5).

7. The sealing structure of a plastic pump according to claim 1, characterized in that, The bottom of the support sealing seat (5) is provided with an extension block (18), which is used to insert into the base (2).

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