Water pump sealing assembly and water pump

Abstract

The utility model provides a water pump sealing assembly which comprises a sealing moving ring and a sealing static ring, the sealing moving ring comprises a sealing piece, a first connecting piece and a second connecting piece, and the sealing piece slides on the first connecting piece and the second connecting piece to form a moving ring body; one end of the sealing piece extends out of the movable ring body from the second connecting piece to be in contact connection with the sealing static ring, a guide rod is arranged at the end, away from the sealing static ring, of the sealing piece and inserted into a guide groove formed in the second connecting piece, and a locking bolt and a spring are arranged in the guide groove. The locking bolt is screwed into the guide groove from the end face, away from the sealing static ring, of the second connecting piece to be in contact connection with the spring, and the spring abuts against the tail end, inserted into the guide groove, of the guide rod through the locking bolt. When the elasticity of the spring is reduced and the sealing effect is insufficient, the sealing moving ring is prevented from being disassembled to complete overhaul, the equipment structure is optimized, the equipment maintenance efficiency is improved, and the equipment maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of water pumps, and in particular relates to a water pump sealing component and a water pump. Background Technology

[0002] Pump sealing components are typically installed between the pump shaft and the pump body to prevent liquid inside the pump body from leaking outward from the pump shaft. Usually, a dynamic sealing ring is installed on the pump shaft and a stationary sealing ring is installed on the pump body. A seal is formed by the contact between the dynamic sealing ring and the stationary sealing ring.

[0003] Most of the sealing rings on the dynamic sealing ring can move along the axial direction. The principle is mainly to achieve contact connection with the stationary sealing ring by providing elastic force through a spring. During long-term operation, the sealing effect will decrease due to the spring force decay and other reasons. The existing spring structure makes it inconvenient to disassemble the internal parts of the dynamic sealing ring. When maintenance is required, a large number of parts need to be disassembled to replace and maintain the spring structure. Utility Model Content

[0004] This utility model provides a water pump sealing assembly, which aims to solve the problem that when the sealing effect decreases due to factors such as elasticity decay, the current spring structure is inconvenient to disassemble inside the sealing ring, and a large number of parts need to be disassembled to replace and maintain the spring structure when maintenance is required.

[0005] This utility model is implemented as follows: a water pump sealing assembly, comprising:

[0006] A sealing rotating ring and a sealing stationary ring, wherein the sealing rotating ring includes a sealing element, a first connecting element, and a second connecting element, and the sealing element slides between the first connecting element and the second connecting element to form the rotating ring body;

[0007] One end of the sealing element extends from the second connector to form a moving ring body that contacts and connects with the sealing stationary ring. The end of the sealing element away from the sealing stationary ring is provided with a guide rod. The guide rod is inserted into a guide groove provided in the second connector. A locking bolt and a spring are provided in the guide groove. The locking bolt is screwed into the guide groove from the end face of the second connector away from the sealing stationary ring and contacts and connects with the spring. The locking bolt holds the spring against the end of the guide rod inserted into the guide groove.

[0008] Preferably, the sealing element includes a sealing ring and a sliding frame. The sliding frame includes a sealing ring support, an embedded ring, and a sliding ring. The sealing ring support and the embedded ring are connected to each other. The sliding ring is located at the outer edge of the connection between the sealing ring support and the embedded ring. The guide rod is disposed on the end face of the embedded ring away from the sealing ring support. The sealing ring is assembled on the sealing ring support.

[0009] Preferably, one end of the first connector is provided with a sliding cavity, and the other end of the first connector is provided with a sliding shaft hole communicating with the sliding cavity. The sealing ring support extends from the sliding shaft hole to form the first connector, and the sealing ring is assembled on the part of the sealing ring support extending from the first connector. The sliding ring slides in the sliding cavity.

[0010] Preferably, the end face of the second connector connected to the first connector is provided with an embedded ring groove, and the end face of the second connector away from the first connector is connected to the embedded ring groove through a guide groove. The embedded ring is inserted into the embedded ring groove, and the guide rod provided on the end face of the embedded ring is inserted into the guide groove.

[0011] The guide groove includes a limiting section and a threaded section. The cross-section of the guide rod is adapted to the limiting section in the guide groove, and the locking bolt is disposed in the threaded section in the guide groove.

[0012] Preferably, the second connector has a first shaft channel at its center to accommodate the water pump shaft, and a first shaft sealing ring is provided in the first shaft channel. The sealing ring support has a second shaft channel at its center to accommodate the water pump shaft, and a second shaft sealing ring is provided in the second shaft channel. The inner edges of the first shaft sealing ring and the second shaft sealing ring are in contact with the water pump shaft.

[0013] Preferably, the connecting end faces of the first connector and the second connector are provided with end face sealing rings.

[0014] Preferably, the outer edge of the sliding ring is provided with a sliding sealing ring, and the sliding ring is in contact with the inner wall of the sliding cavity through the sliding sealing ring.

[0015] A water pump employing the water pump sealing assembly described above.

[0016] Compared with the prior art, the embodiments of this application have the following main advantages:

[0017] The water pump sealing assembly provided by this utility model supports the guide rod by a number of springs set on the end face of the second connector. The other end of the guide groove is sealed by a locking bolt. In the actual sealing process, the spring force is adjusted by screwing in the locking bolt. The locking bolt structure design facilitates the adjustment of the spring force and reduces the need for disassembly in the later maintenance process. When the spring force decreases and the sealing effect is insufficient, it avoids disassembling the sealing ring to complete the maintenance. The optimized equipment structure improves the equipment maintenance efficiency and reduces the equipment maintenance cost. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a water pump sealing assembly provided by this utility model.

[0019] Figure 2This is an exploded view of the sealing dynamic ring of a water pump sealing assembly provided by this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of a sealing element in a water pump sealing assembly provided by this utility model.

[0021] Figure 4 This is a schematic diagram of the internal structure of the sealing ring of a water pump sealing assembly provided by this utility model.

[0022] Figure 5 This is a schematic diagram of the embedded annular groove structure of a water pump sealing assembly provided by this utility model.

[0023] Figure 6 This is a schematic diagram of the guide groove structure of a water pump sealing assembly provided by this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Sealing element; 101. First shaft sealing ring; 102. End face sealing ring; 103. Sliding sealing ring; 104. Second shaft sealing ring; 110. Sealing ring; 120. Sliding frame; 121. Sealing ring support; 122. Embedded ring; 123. Sliding ring; 124. Guide rod; 200. First connecting piece; 210. Sliding cavity; 300. Second connecting piece; 310. Embedded ring groove; 320. Guide groove; 321. Limiting section; 322. Threaded section; 330. Locking bolt; 340. Spring; 400. Sealing stationary ring; 500. Limiting bolt. Detailed Implementation

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] This utility model embodiment provides a water pump sealing assembly, such as Figures 1-6 As shown, the water pump sealing assembly, applied to the water pump shaft and pump body, includes:

[0029] A sealing rotating ring and a sealing stationary ring 400 are provided. The sealing rotating ring is assembled on the water pump shaft, and the sealing stationary ring 400 is assembled on the pump body. The sealing rotating ring includes a sealing element 100, a first connecting element 200, and a second connecting element 300. The sealing element 100 slides on the first connecting element 200 and the second connecting element 300 to form the main body of the rotating ring.

[0030] One end of the sealing element 100 extends from the second connector 300 to form a moving ring body that contacts and connects with the sealing stationary ring 400. The end of the sealing element 100 away from the sealing stationary ring 400 is provided with a guide rod 124. The guide rod 124 is inserted into a guide groove 320 provided in the second connector 300. A locking bolt 330 and a spring 340 are provided in the guide groove 320. The locking bolt 330 is screwed into the guide groove 320 from the end face of the second connector 300 away from the sealing stationary ring 400 and contacts and connects with the spring 340. The locking bolt 330 holds the spring 340 against the end of the guide rod 124 inserted into the guide groove 320.

[0031] In this embodiment, the sealing stationary ring 400 adopts the structure of a sealing stationary ring in the prior art. The second connecting member 300 is provided with a limiting bolt 500 that penetrates the side wall of the connecting member 300. The limiting bolt 500 abuts against a pre-set plane on the water pump shaft to complete the connection between the water pump shaft and the sealing moving ring. The number of guide rods 124 is several sets, and the number of guide grooves 320 provided in the second connecting member 300 is adapted to the number of guide rods 124. Here, the other end of the guide groove 320 is blocked by a locking bolt 330. In the actual sealing process, the elastic force of the spring 340 is adjusted by screwing in the locking bolt 330. The elastic pressure is provided by multiple sets of springs 340, which can make up for the situation where the seal fails immediately after the single spring assembly is damaged by using the advantage of quantity. At the same time, the structural design of the locking bolt 330 facilitates the adjustment of the elastic force of the spring 340, reduces the need for disassembly in the later maintenance process, and avoids disassembly when the sealing effect decreases.

[0032] In a preferred embodiment of this invention, the sealing element 100 includes a sealing ring 110 and a sliding frame 120. The sliding frame 120 includes a sealing ring support 121, an embedded ring 122, and a sliding ring 123. The sealing ring support 121 and the embedded ring 122 are connected to each other. The sliding ring 123 is located at the outer edge of the connection between the sealing ring support 121 and the embedded ring 122. The sealing ring support 121 has a second rotating shaft channel, and the water pump shaft is assembled in the second rotating shaft channel. The inner diameter of the embedded ring 122 needs to be larger than the inner diameter of the second rotating shaft channel, and the water pump shaft does not contact the embedded ring 122. The guide rod 124 is disposed on the end face of the embedded ring 122 away from the sealing ring support 121. The sealing ring 110 is assembled on the sealing ring support 121. The sealing ring 110 is in contact with the sealing stationary ring 400. The connection method and structure of the sealing ring 110 and the sealing stationary ring 400 adopt existing technology.

[0033] The first connector 200 has a sliding cavity 210 at one end and a sliding shaft hole communicating with the sliding cavity 210 at the other end. The sealing ring support 121 extends from the sliding shaft hole to the first connector 200. The sealing ring 110 is assembled on the part of the sealing ring support 121 that extends from the first connector 200. The sliding ring 123 slides in the sliding cavity 210.

[0034] The end face of the second connector 300 connected to the first connector 200 is provided with an embedded annular groove 310. The second connector 300 is provided with a first shaft channel for accommodating the water pump shaft. The embedded annular groove 310 is distributed on the annular side of the first shaft channel. The first shaft channel is not connected to the embedded annular groove 310. The end face of the second connector 300 away from the first connector 200 is connected to the embedded annular groove 310 through a guide groove 320. The embedded ring 122 is inserted into the embedded annular groove 310. The guide rod 124 provided on the end face of the embedded ring 122 is inserted into the guide groove 320.

[0035] The function of inserting the embedded ring 122 into the embedded ring groove 310 is to provide circumferential support for the guide rod 124, because the seal 100 will slide during actual use, and the guide rod 124 is prone to breakage if it is directly subjected to pressure without nesting protection.

[0036] In a preferred embodiment of this invention, a first shaft sealing ring 101 is provided in the first shaft channel, and a second shaft sealing ring 104 is provided in the second shaft channel. The inner edges of the first shaft sealing ring 101 and the second shaft sealing ring 104 are in contact with the water pump shaft.

[0037] In this embodiment, the first shaft sealing ring 101 and the second shaft sealing ring 104 seal the pump shaft axially to reduce leakage. At the same time, in order to increase the sealing performance of the dynamic sealing ring, the connecting end face of the first connector 200 and the second connector 300 is provided with an end face sealing ring 102. The outer edge of the sliding ring 123 is provided with a sliding sealing ring 103. The sliding ring 123 is in contact with the inner wall of the sliding cavity 210 through the sliding sealing ring 103. The position of the limiting bolt 500 needs to avoid the first shaft sealing ring 101 and the guide groove 320. The limiting bolt 500 is usually set on the side of the first shaft sealing ring 101 away from the first connector 200.

[0038] In a further preferred embodiment of this utility model, the guide groove 320 is internally composed of a limiting section 321 and a threaded section 322. The cross-section of the limiting section 321 in the guide groove 320 is an arc-shaped structure. The cross-section of the guide rod 124 is adapted to the limiting section 321 in the guide groove 320. The locking bolt 330 is disposed in the threaded section 322 in the guide groove 320.

[0039] In this application, the limiting segment 321 and the guide rod 124 can adopt an arc-shaped structure to achieve axial limiting. Even when a set of springs 340 loses its activity, the sealing ring 110 will not shift due to uneven force due to elastic force deviation, thus affecting the sealing effect.

[0040] This utility model embodiment also provides a water pump employing the water pump sealing assembly described above.

[0041] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A water pump sealing assembly applied to a water pump rotating shaft and a pump body, characterized in that, The utility model relates to a sealing assembly for water pump, comprising: a sealing dynamic ring and a sealing static ring, the sealing dynamic ring comprises a sealing part, a first connecting part and a second connecting part, the sealing part slides in the first connecting part and the second connecting part to form a dynamic ring main body; one end of the sealing part extends out of the dynamic ring main body and is connected with the sealing static ring, a guide rod is arranged at the end of the sealing part away from the sealing static ring, the guide rod is inserted into a guide groove arranged in the second connecting part, a locking bolt and a spring are arranged in the guide groove, the locking bolt is screwed into the guide groove from the end of the second connecting part away from the sealing static ring and is connected with the spring, and the locking bolt supports the spring against the end of the guide rod inserted into the guide groove.

2. A water pump seal assembly as claimed in claim 1, wherein, The sealing part comprises a sealing ring and a sliding frame, the sliding frame comprises a sealing ring support and an embedded ring and a sliding ring, the sealing ring support and the embedded ring are connected with each other, the sliding ring is located at the outer edge of the connection between the sealing ring support and the embedded ring, the guide rod is arranged at the end face of the embedded ring away from the sealing ring support, and the sealing ring is assembled on the sealing ring support.

3. A water pump seal assembly as claimed in claim 2, wherein, One end of the first connecting part is provided with a sliding cavity, the other end of the first connecting part is provided with a sliding shaft hole in communication with the sliding cavity, the sealing ring support extends out of the first connecting part from the sliding shaft hole, the sealing ring is assembled on the part of the sealing ring support extending out of the first connecting part, and the sliding ring slides in the sliding cavity.

4. A water pump seal assembly as claimed in claim 3, wherein, The end face of the second connecting part connected with the first connecting part is provided with an embedded ring groove, the end face of the second connecting part away from the first connecting part is in communication with the embedded ring groove through the guide groove, the embedded ring is inserted into the embedded ring groove, and the guide rod arranged at the end face of the embedded ring is inserted into the guide groove. The guide groove comprises a limiting section and a threaded section, the cross section of the guide rod is matched with the limiting section in the guide groove, and the locking bolt is arranged in the threaded section in the guide groove.

5. A water pump seal assembly as claimed in claim 4, wherein, The second connecting part is provided with a first shaft passage in the center for accommodating the water pump rotating shaft, the first shaft passage is provided with a first shaft rod sealing ring, the sealing ring support is provided with a second shaft passage in the center for accommodating the water pump rotating shaft, the second shaft passage is provided with a second shaft rod sealing ring, and the inner edges of the first shaft rod sealing ring and the second shaft rod sealing ring are connected with the water pump rotating shaft.

6. A water pump seal assembly as claimed in claim 5, wherein, The connecting end faces of the first connecting part and the second connecting part are provided with end face sealing rings.

7. A water pump seal assembly as claimed in claim 6, wherein, The outer edge of the sliding ring is provided with a sliding sealing ring, and the sliding ring is connected with the inner wall of the sliding cavity through the sliding sealing ring.

8. A water pump characterized by comprising: The water pump adopts the sealing assembly for water pump.

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