Water pump impeller wear ring sealing structure
By setting up wear -resistant rings and waveform springs between the pump leaf wheels and the pump shell, the problem of liquid medium return during the pump work is solved, and higher efficiency is achieved.
Patent Information
- Application Number
- CN202420731135.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-10
AI Technical Summary
When the existing water pump is working, part of the liquid medium is returned due to the gap between the impeller and the pump housing, causing internal leakage, affecting the efficiency of the high-head water pump.
Adopt the tightly seal structure of the water pump -leaf wheel, the first and second wear -resistant rings are set between the pump shell and the impeller, and a waveform spring is set at the first abrasion ring to increase the axial force to ensure that the wear -resistant rings are between the wear -resistant ring. Tight contact to prevent the flow of water from flowing.
Effectively avoid the leakage of the water flow from the outlet to the water inlet, reducing the phenomenon of internal leakage, and greatly improving the efficiency of the pump.
Smart Images
Figure CN222415330U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sealing structure of a high-lift water pump, in particular to a sealing structure of a water pump impeller ring. Background Art
[0002] Generally, the gap between the impeller and the pump casing is 0.5mm. When the pump is working, part of the liquid medium flows back from the outlet to the inlet through this gap, forming internal leakage. This leakage has a great influence on the efficiency of high-lift pumps, so it is necessary to improve it. Summary of the invention
[0003] The utility model aims to solve the deficiencies and defects of the prior art and provides a water pump impeller ring sealing structure, which can avoid internal leakage caused by water leaking from the water outlet to the water inlet and improve the efficiency of the water pump.
[0004] The basic concept of the technical solution adopted by the utility model is: a water pump impeller mouth ring sealing structure, including a pump casing and an impeller, one end of the pump casing has a cavity, the impeller is arranged in the cavity, the impeller includes a body, one end of the body has blades, the upper end of the blades has an impeller cover, the impeller cover is opposite to the inner wall of the cavity, the pump casing has a circle of first grooves, the first groove has a circle of first wear-resistant rings, the impeller cover has a circle of second grooves, the second groove is arranged opposite to the first groove, the second groove has a circle of second wear-resistant rings, the first wear-resistant ring and the second wear-resistant ring are in close contact. Due to the sealing of the first wear-resistant ring and the second wear-resistant ring, when the water flows from the gap between the impeller and the inner wall of the pump casing to the water inlet, it will be blocked by the first wear-resistant ring and the second wear-resistant ring to avoid the formation of backflow, which greatly improves the efficiency of the water pump.
[0005] In the above technical solution, preferably, the bottom of the first groove has a circle of elastic body, and the first wear-resistant ring is in close contact with the second wear-resistant ring under the action of the elastic body. The existence of the elastic body can exert an axial force toward the second wear-resistant ring on the first wear-resistant ring, so that the seal between the first wear-resistant ring and the second wear-resistant ring can be more reliable, and when the end face of the impeller wear-resistant ring is slightly tilted, the ceramic wear-resistant ring is subjected to the axial force and can automatically adjust its contact surface with the second wear-resistant ring to ensure the reliability of the seal.
[0006] In the above technical solution, specifically, the elastic body is a wave spring.
[0007] In the above technical solution, preferably, the inner ring of the pump housing has a slot communicating with the first groove, and the first wear-resistant ring is provided with a protrusion matching with the slot, and the protrusion is inserted into the slot. The cooperation between the protrusion and the slot is mainly to prevent the first wear-resistant ring from rotating.
[0008] In the above technical solution, preferably, the outer ring of the first wear-resistant ring has a sealing ring, and the sealing ring forms a seal with the inner wall of the first groove. The sealing ring prevents water from leaking from the first groove to the impeller water inlet.
[0009] Compared with the prior art, the utility model has the following beneficial effects:
[0010] Due to the sealing of the first wear-resistant ring and the second wear-resistant ring, when water flows from the gap between the impeller and the inner wall of the pump casing to the water inlet, it will be blocked by the first wear-resistant ring and the second wear-resistant ring to avoid backflow, thereby greatly improving the efficiency of the water pump.
[0011] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the present invention.
[0013] Figure 2 It is a partial schematic diagram of the present invention.
[0014] Figure 3 Schematic diagram of a wave spring.
[0015] Figure 4 It is a schematic diagram of the first wear-resistant ring.
[0016] The numbers and corresponding parts names of the accompanying drawings are as follows:
[0017] Pump housing 1, cavity 11, water inlet 12, water outlet 13, first groove 14, slot 141, impeller 2, body 21, blade 22, impeller cover 23, second groove 231, first wear-resistant ring 3, wave spring 31, protrusion 32, sealing ring 33, second wear-resistant ring 4, DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.
[0019] like Figures 1 to 4 As shown, a water pump impeller seal structure includes a pump casing 1 and an impeller 2. One end of the pump casing 1 has a cavity 11, and the impeller 2 is arranged in the cavity 11. The top of the pump casing 1 is a water inlet 12, and the bottom of the pump casing is a water outlet 13.
[0020] The impeller 2 comprises a body 21, one end of which has blades 22, and the outer ring of the blades 22 has an impeller cover 23, and the impeller cover 23 is opposite to the inner wall of the cavity 11. There is a gap of 0.5 mm between the impeller cover 23 and the inner wall of the cavity 11.
[0021] The pump housing 1 has a circle of first grooves 14, and the first grooves 14 have a circle of first wear-resistant rings 3. The impeller cover 23 has a circle of second grooves 231, which are arranged opposite to the first grooves 14, and the second grooves 231 have a circle of second wear-resistant rings 4, and the first wear-resistant rings and the second wear-resistant rings are in close contact.
[0022] The bottom of the first groove 14 has a circle of elastic body, and in this embodiment, the elastic body is a wave spring 31. The first wear-resistant ring 3 is in close contact with the second wear-resistant ring 4 under the action of the wave spring 31. The existence of the elastic body can exert an axial force toward the second wear-resistant ring on the first wear-resistant ring, so that the seal between the first wear-resistant ring and the second wear-resistant ring is more reliable, and when the end face of the impeller wear-resistant ring is slightly tilted, the ceramic wear-resistant ring is subjected to the axial force and can automatically adjust its contact surface with the second wear-resistant ring to ensure the reliability of the seal.
[0023] The inner ring of the pump housing 1 has a slot 141 communicating with the first groove 14, and the first wear-resistant ring 3 is provided with a protrusion 32 matching with the slot 141, and the protrusion 32 is inserted into the slot 141. The cooperation between the protrusion and the slot is mainly to prevent the first wear-resistant ring from rotating.
[0024] The outer ring of the first wear-resistant ring 3 has a sealing ring 33, and the sealing ring 33 forms a seal with the inner wall of the first groove 14. The sealing ring prevents water from leaking from the first groove to the impeller water inlet.
[0025] Due to the sealing of the first wear-resistant ring and the second wear-resistant ring, when water flows from the gap between the impeller and the inner wall of the pump casing to the water inlet, it will be blocked by the first wear-resistant ring and the second wear-resistant ring to avoid backflow, thereby greatly improving the efficiency of the water pump.
Claims
1. A water pump impeller ring sealing structure, comprising a pump casing and an impeller, wherein one end of the pump casing has a cavity, the impeller is arranged in the cavity, the impeller comprises a body, one end of the body has blades, the upper end of the blades has an impeller cover, the impeller cover is opposite to the inner wall of the cavity, and is characterized in that: The pump housing has a circle of first grooves, the first grooves have a circle of first wear-resistant rings, the impeller cover has a circle of second grooves, the second grooves are arranged opposite to the first grooves, the second grooves have a circle of second wear-resistant rings, and the first wear-resistant rings are in close contact with the second wear-resistant rings.
2. A water pump impeller ring sealing structure according to claim 1, characterized in that: The bottom of the first groove has a circle of elastic body, and the first wear-resistant ring is in close contact with the second wear-resistant ring under the action of the elastic body.
3. A water pump impeller ring sealing structure according to claim 2, characterized in that: The elastic body is a wave spring.
4. A water pump impeller ring sealing structure according to claim 1, characterized in that: The inner ring of the pump housing is provided with a slot communicating with the first groove, and the first wear-resistant ring is provided with a protrusion matching with the slot, and the protrusion is inserted into the slot.
5. A water pump impeller ring sealing structure according to claim 1, characterized in that: The outer ring of the first wear-resistant ring has a sealing ring, and the sealing ring forms a seal with the inner wall of the first groove.