Water pump high in sealing performance and easy to maintain

Abstract

The utility model provides a water pump high in sealing performance and easy to maintain, and belongs to the technical field of fluid conveying equipment. The problem that in the prior art, a water pump is insufficient in sealing performance or high in maintenance cost is solved. The pump comprises a front outer pump shell, a rear outer pump shell, a pump body, a pump shaft and a sealing assembly, the front outer pump shell is fixedly connected with the rear outer pump shell, the pump body is fixedly installed in the front outer pump shell and the rear outer pump shell, the rear outer pump shell extends out of an installation ring body, and the pump shaft sequentially penetrates through the front outer pump shell, the pump body and the rear outer pump shell. The sealing assembly comprises a sealing support, a compression spring and a sealing lock ring, the sealing support is installed in the installation ring body, the pump shaft penetrates through the sealing support, a fixing ring is formed in the sealing support, the two ends of the compression spring are installation planes, and the installation planes are attached and fixed to the inner side of the fixing ring. The sealing lock ring is fixedly installed on the pump shaft on the rear side of the sealing support, a connecting plane is formed on the end face of the sealing lock ring, the compression spring is installed in the sealing support and arranged on the outer side of the pump shaft in a sleeving mode, and an installation plane at the other end of the compression spring is attached and fixed to the connecting plane. The sealing device has the advantages of being good in sealing performance and easy to maintain.

Description

Technical Field

[0001] This utility model belongs to the technical field of fluid transport equipment and relates to a water pump with high sealing performance and easy maintenance. Background Technology

[0002] Among the water pumps currently on the market, some do not have a sealing mechanism between the pump body and the shaft, resulting in substandard sealing performance in actual use. Alternatively, the installation of a sealing mechanism can be very costly, significantly increasing the production cost of the water pump due to poor sealing.

[0003] Chinese patent publication number CN213928756U discloses a water pump, including an outer shell with a receiving cavity; the outer shell has an inlet and an outlet; an inner shell disposed in the receiving cavity; the inner shell has a waterproof cavity; a water flow channel is provided between the inner shell and the outer shell, and the water flow channel is connected to the inlet and the outlet respectively; an impeller assembly disposed in the water flow channel; a motor assembly disposed in the inner shell; the motor assembly is used to drive the impeller assembly; and an electrical control device disposed in the waterproof cavity; the electrical control device is electrically connected to the motor assembly.

[0004] The water pump provided by this patent lacks a sealing mechanism between the shaft and the pump body, resulting in insufficient sealing. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a water pump with high sealing performance and easy maintenance.

[0006] The objective of this utility model can be achieved through the following technical solution: A water pump with high sealing performance and easy maintenance includes a front outer pump casing, a rear outer pump casing, a pump body, a pump shaft, and a sealing assembly. The front and rear outer pump casings are fixedly connected. The pump body is fixedly installed inside the front and rear outer pump casings. The rear outer pump casing extends into an mounting ring. The pump shaft passes through the front outer pump casing, the pump body, and the rear outer pump casing in sequence. The sealing assembly includes a sealing support, a compression spring, and a sealing locking ring. The sealing support is installed inside the mounting ring, and the pump shaft passes through the sealing support. A fixing ring is formed inside the sealing support. Both ends of the compression spring are mounting planes. The mounting planes are fitted and fixed to the inner side of the fixing ring. The sealing locking ring is fixedly installed on the pump shaft on the rear side of the sealing support. A connecting plane is formed on the end face of the sealing locking ring. The compression spring is installed inside the sealing support and sleeved on the outer side of the pump shaft. The mounting plane at the other end of the compression spring is fitted and fixed to the connecting plane.

[0007] In the aforementioned high-sealing and easy-to-maintain water pump, a support housing is provided on the outside of the pump shaft, and a housing end cover is fixedly connected to the end of the support housing. The housing end cover has a through hole in the center and a mechanical seal is sealed in the housing end cover.

[0008] In the aforementioned high-sealing and easy-to-maintain water pump, the sealing support has several reinforcing ribs formed on its exterior.

[0009] In the aforementioned high-sealing and easy-to-maintain water pump, a liner is provided at one end of the pump body, and a sealing ring is connected between the liner and the pump body.

[0010] Compared with the prior art, the water pump with high sealing performance and easy maintenance provided by this utility model has the following beneficial effects: the compression spring in the sealing assembly has mounting planes at both ends. One end is fitted and fixed to the inner side of the fixing ring inside the sealing support, and the other end is fitted and fixed to the connecting plane on the end face of the sealing lock ring. The compression spring is installed inside the sealing support and sleeved on the outside of the pump shaft. It can use its own elasticity to always apply axial pressure to the sealing lock ring. When the pump shaft has a small axial displacement during operation or the sealing components are worn, the compression spring can compensate in time to ensure a tight fit between the sealing lock ring and related components, thereby preventing liquid from leaking from the gap between the pump shaft and the sealing components and maintaining a good sealing effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the sealing assembly structure.

[0014] In the diagram: 1. Front outer pump casing; 2. Rear outer pump casing; 21. Mounting ring; 3. Pump body; 31. Liner; 32. Sealing ring; 4. Pump shaft; 5. Sealing assembly; 51. Sealing support; 511. Fixing ring; 512. Reinforcing rib; 52. Compression spring; 521. Mounting plane; 53. Sealing locking ring; 531. Connecting plane; 6. Support housing; 61. Housing end cover; 62. Mechanical seal. Detailed Implementation

[0015] 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.

[0016] like Figures 1 to 3As shown, this embodiment includes a front outer pump housing 1, a rear outer pump housing 2, a pump body 3, a pump shaft 4, and a sealing assembly 5. The front outer pump housing 1 and the rear outer pump housing 2 are fixedly connected by several bolts. The pump body 3 is fixedly installed inside the cavity formed by the connection of the front outer pump housing 1 and the rear outer pump housing 2. The pump shaft 4 passes through the front outer pump housing 1, the pump body 3, and the rear outer pump housing 2 in sequence. The rear outer pump housing 2 extends rearward to form an mounting ring 21. The sealing assembly 5 includes a sealing support 51, a compression spring 52, and a sealing locking ring 53. The sealing support 51 is installed inside the mounting ring 21, and the sealing locking ring 53 is fixedly installed on the pump shaft 4 on the rear side of the sealing support 51. A fixing ring 51 is formed inside the sealing support 51. 1. Both ends of the compression spring 52 are mounting planes 521. The compression spring 52 is installed inside the sealing support 51 and the mounting plane 521 is attached to the inner side of the fixing ring 511. The compression spring 52 and the sealing support 51 are fixedly connected by bolts. The compression spring 52 is sleeved on the outside of the pump shaft 4. The compression spring 52 can use its own elasticity to always apply axial pressure to the sealing lock ring 53. A connecting plane 531 is formed on the end face of the sealing lock ring 53. The pump shaft 4 passes through the sealing support 51. The sealing lock ring 53 is sleeved on the outside of the pump shaft 4 behind the sealing support 51. The mounting plane 521 of the other end of the compression spring 52 is attached and fixed to the connecting plane 531.

[0017] like Figures 1 to 2 As shown, a support box 6 is provided on the outside of the pump shaft 4. A box end cover 61 is fixedly connected to the end of the support box 6 near the rear outer pump housing 2. A through hole is opened in the center of the box end cover 61, and a mechanical seal 62 is sealed in the through hole. The mechanical seal 62 ensures the sealing of the inside of the support box 6.

[0018] To elaborate further, such as Figures 1 to 2 As shown, a liner 31 is provided at one end of the pump body 3 near the rear outer pump cover. A sealing ring 32 is connected between the liner 31 and the pump body 3. When the liner 31 is worn, it can be disassembled and replaced separately, avoiding the need to replace the entire pump body 3 and reducing maintenance costs.

[0019] To elaborate further, such as Figures 1 to 2 As shown, the sealing support 51 has several reinforcing ribs 512 arranged in a circumferential array on its exterior. Each reinforcing rib 512 has a threaded hole that can cooperate with a locating pin to ensure the coaxiality and perpendicularity of the sealing support 51 during installation, and to avoid sealing failure due to installation deviation.

[0020] 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.

[0021] Although this document uses a variety of 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 water pump with high sealing performance and easy maintenance, comprising a front outer pump housing (1), a rear outer pump housing (2), a pump body (3), a pump shaft (4), and a sealing assembly (5), wherein the front outer pump housing (1) and the rear outer pump housing (2) are fixedly connected, and the pump body (3) is fixedly installed inside the front outer pump housing (1) and the rear outer pump housing (2), characterized in that: The rear outer pump housing (2) extends into an mounting ring (21). The pump shaft (4) passes through the front outer pump housing (1), the pump body (3), and the rear outer pump housing (2) in sequence. The sealing assembly (5) includes a sealing support (51), a compression spring (52), and a sealing locking ring (53). The sealing support (51) is installed inside the mounting ring (21), and the pump shaft (4) passes through the sealing support (51). A fixing ring (511) is formed inside the sealing support (51). Both ends of the compression spring (52) are... The mounting plane (521) is fitted and fixed to the inner side of the fixing ring (511). The sealing locking ring (53) is fixedly installed on the pump shaft (4) on the rear side of the sealing support (51). A connecting plane (531) is formed on the end face of the sealing locking ring (53). The compression spring (52) is installed inside the sealing support (51) and sleeved on the outside of the pump shaft (4). The mounting plane (521) at the other end of the compression spring (52) is fitted and fixed to the connecting plane (531).

2. The water pump with high sealing performance and easy maintenance according to claim 1, characterized in that: A support box (6) is provided on the outside of the pump shaft (4). A box end cover (61) is fixedly connected to the end of the support box (6). A through hole is opened in the center of the box end cover (61), and a mechanical seal (62) is sealed in the box end cover (61).

3. The water pump with high sealing performance and easy maintenance according to claim 1, characterized in that: The sealing support (51) has several reinforcing ribs (512) formed on its exterior.

4. A water pump with high sealing performance and easy maintenance according to claim 1, characterized in that: A liner (31) is provided at one end of the pump body (3), and a sealing ring (32) is connected between the liner (31) and the pump body (3).

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