Water pump flow guide shell

Abstract

The water pump flow guide shell comprises a pump shell, a lining layer and a noise elimination ring fixedly installed at the liquid outlet end of the pump shell, the lining layer is of a two-section structure and is fixedly installed on the surface of the inner wall of the pump shell, a water outlet end connected to the liquid outlet end of the pump shell in a sleeved mode is arranged on one side of the lining layer, one end of the water outlet end abuts against one side of the noise elimination ring, and the other end of the water outlet end abuts against the other side of the noise elimination ring. Rifling is arranged on the inner side of the water outlet end, the noise elimination ring comprises a ring base and a flow guide strip, and the flow guide strip is in a spiral strip shape and is fixedly installed on the inner side of the ring base. According to the utility model, through the arrangement of the lining layer structure and the rubber lining layer, the effects of buffering and absorbing impact energy can be achieved, and the cavitation effect is reduced, so that the impact force generated when water flow is rapidly closed or cavitation is generated is reduced, the impact noise and the risk of equipment damage are reduced, and the rifling is formed in the water outlet end, so that the service life is prolonged. The spiral rifling can change the flowing mode of water flow, can improve the stability of the water flow, reduces vortex and turbulent flow of the water flow, and facilitates reduction of vibration and noise of the water flow.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a water pump guide shell. Background Art

[0002] As a common fluid conveying equipment, water pumps are widely used in industry, agriculture, construction and other fields. Water pumps are usually composed of water inlet, impeller, pump casing, water outlet, etc. Among them, the pump casing, as one of the important components of the pump, undertakes the function of containing, protecting and guiding the fluid. Traditional water pump casings are usually made of metal materials, such as cast iron, stainless steel, etc., which have certain strength and corrosion resistance. However, there are some problems with traditional water pump casings during use: water flow is obstructed and rubbed when passing through the inside of the pump casing, causing vibration and sound when the fluid moves. Especially in the case of high-speed operation or high working pressure, the noise will be more obvious; the gas dissolved in the fluid precipitates and forms bubbles when the pressure decreases, and then is compressed and dissolved again in the high-pressure area. The cavitation effect will cause the pumping performance to decrease, the vibration to increase, the noise to increase, and may cause damage to the water pump equipment and pipelines. In view of this, the existing problems are studied and improved, and a water pump guide casing is provided to solve the current problems, aiming to achieve the purpose of solving the problem and improving the practical value through this technology. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted by the utility model is: a water pump guide shell, comprising: a pump shell, an inner lining layer and a noise-damping ring fixedly installed on the liquid outlet end of the pump shell, the inner lining layer is a two-petal structure and is fixedly installed on the inner wall surface of the pump shell, one side of the inner lining layer is provided with a water outlet end which is sleeved on the liquid outlet end of the pump shell, and one end of the water outlet end is abutted against one side of the noise-damping ring, the inner side of the water outlet end is provided with rifling, the noise-damping ring comprises a ring seat and a guide strip, the guide strip is in the shape of a spiral strip and is fixedly installed on the inner side of the ring seat, the guide strip is arranged in an oblique cone shape and the inner eaves is inclined along the liquid outlet direction of the pump shell.

[0005] In a preferred example, the utility model can be further configured as follows: the inner lining layer is a rubber material component, and the shape structure of the inner lining layer is compatible with the shape structure of the pump casing.

[0006] In a preferred example, the utility model can be further configured as follows: a lining pressure plate is provided on the inner side of the inner lining layer, and a surface of the lining pressure plate is provided with rifling that penetrates the inner lining layer and the pump casing, and one end of the rifling penetrates to the outer side of the pump casing.

[0007] In a preferred example, the utility model can be further configured as follows: one side of the inner lining layer is in the shape of a flat disc and is symmetrically arranged with respect to the central plane of the pump casing, and the lining pressure plate is a component made of polytetrachloroethylene.

[0008] In a preferred example, the utility model can be further configured as follows: the rifling is a spiral structure, the rifling on the surfaces of the two water outlet ends is continuous and the inner side of the rifling is in a smooth surface shape.

[0009] In a preferred example, the utility model can be further configured as follows: the guide strips are rubber components and are arranged in a spiral direction, spiral gaps are provided between the guide strips, and the gap width is less than or equal to the width of the guide strips.

[0010] In a preferred example, the utility model can be further configured as follows: the inner diameter of the guide strip is greater than or equal to the inner diameter of the water outlet port.

[0011] The beneficial effects achieved by the utility model are:

[0012] 1. In the utility model, by setting the inner lining structure, the rubber inner lining can buffer and absorb the impact energy, reduce the cavitation effect, thereby reducing the impact force when the water flow is quickly closed or cavitation occurs, reducing the impact noise and the risk of equipment damage, and rifling is opened inside the water outlet. The spiral rifling can change the flow pattern of the water flow, improve the stability of the water flow, reduce the vortex and turbulence of the water flow, and help reduce the vibration and noise of the water flow.

[0013] 2. In the utility model, a noise reduction ring structure is added to the end of the water outlet, and the flexible structure of the guide strip is used to perform radial and spiral water diversion when the water is eroded by the side water flow, thereby reducing the impact of the water on the water outlet wall, thereby further improving the water hammer effect and eliminating water flow noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the inner lining structure of an embodiment of the utility model;

[0017] Figure 4 The figure is a schematic diagram of the noise reduction ring structure of one embodiment of the utility model.

[0018] Reference numerals:

[0019] 100, pump casing; 200, inner lining; 210, water outlet; 220, lining pressure plate; 211, rifling; 221, threaded pull rod; 300, noise reduction ring; 310, ring seat; 320, guide strip. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0021] A water pump guide shell provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0022] Combination Figure 1-4 As shown, the utility model provides a water pump guide shell, comprising: a pump shell 100, an inner lining layer 200 and a noise-absorbing ring 300 fixedly installed on the liquid outlet end of the pump shell 100, the inner lining layer 200 is a two-petal structure and is fixedly installed on the inner wall surface of the pump shell 100, one side of the inner lining layer 200 is provided with a water outlet end 210 sleeved on the liquid outlet end of the pump shell 100, and one end of the water outlet end 210 abuts against one side of the noise-absorbing ring 300, and the inner side of the water outlet end 210 is provided with rifling 211, the noise-absorbing ring 300 includes a ring seat 310 and a guide strip 320, the guide strip 320 is in the shape of a spiral strip and is fixedly installed on the inner side of the ring seat 310, the guide strip 320 is arranged in an oblique cone shape and the inner eaves are inclined along the liquid outlet direction of the pump shell 100.

[0023] In this embodiment, the inner lining layer 200 is a rubber material component, and the shape and structure of the inner lining layer 200 is compatible with the shape and structure of the pump housing 100 .

[0024] In this embodiment, a lining plate 220 is provided on the inner side of the inner lining layer 200 , and a surface of the lining plate 220 is provided with rifling 211 penetrating the inner lining layer 200 and the pump casing 100 , and one end of the rifling 211 penetrates to the outer side of the pump casing 100 .

[0025] Specifically, the rifling 211 on the surface of the lining plate 220 penetrates to the outside of the pump housing 100 , and the lining plate 220 is pressed against the surface of the inner lining layer 200 to fix the inner lining layer 200 .

[0026] In this embodiment, one side of the inner liner 200 is in the shape of a flat disc and is symmetrically arranged with respect to the central plane of the pump housing 100 , and the lining plate 220 is a component made of polytetrachloroethylene.

[0027] Specifically, the surface planar structure of the lining plate 220 is used to face the water pump impeller, and the surface planar structure can effectively reduce the scouring of the centrifugal water.

[0028] In this embodiment, the rifling 211 is a spiral structure, and the rifling 211 on the surfaces of the two water outlet ends 210 is continuous and the inner side of the rifling 211 is in a smooth surface shape.

[0029] Specifically, the spiral rifling 211 structure is used to guide the water, thereby improving the flow stability of the water and reducing the impact of the water.

[0030] In this embodiment, the guide strips 320 are rubber components and are arranged in a spiral direction. Spiral gaps are provided between the guide strips 320 , and the width of the gaps is less than or equal to the width of the guide strips 320 .

[0031] Furthermore, the inner diameter of the guide strip 320 is greater than or equal to the inner diameter of the port of the water outlet end 210 .

[0032] Specifically, the flexible structure of the guide strip 320 is utilized to guide the water radially and helically when being washed by the side water flow, thereby reducing the impact of the water on the outlet wall.

[0033] The working principle and use process of this utility model:

[0034] During operation of the pump casing, water or other media enters the chamber from one side of the pump casing 100 under the action of the centrifugal impeller and is discharged from the water outlet 210. The material flexibility of the lining layer 200 inside the pump casing 100 is used to reduce the impact effect of the water on the inner wall of the pump casing 100, which can play a role in buffering and absorbing impact energy, thereby reducing the impact force when the water flow is quickly closed or cavitation occurs, reducing the risk of impact noise and equipment damage, and rifling 211 is opened inside the water outlet 210. The spiral rifling 211 can change the flow mode of the water flow, which can improve the water flow. The stability of the water flow is improved, the eddy current and turbulence of the water flow are reduced, and the vibration and noise of the water flow are reduced; when the water flow is directed out of the water outlet end 210, the conical oblique arrangement of the ring seat 310 causes the water liquid impacting the inner wall of the ring seat 310 to be radially guided, and the spiral water liquid guided by the rifling 211 can flow in the spiral gap of the guide strip 320, and this part of the water liquid and the guide strip 320 together form an isolation layer between the main water flow and the inner wall of the ring seat 310, avoiding the noise caused by the friction and scouring between the water liquid and the inner wall of the ring seat 310, and making the main water flow converge to avoid turbulence and other movement noise.

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water pump guide shell, characterized in that: include: A pump casing (100), an inner lining layer (200), and a noise reduction ring (300) fixedly mounted on the liquid outlet end of the pump casing (100); the inner lining layer (200) is in a two-petal structure and is fixedly mounted on the inner wall surface of the pump casing (100); one side of the inner lining layer (200) is provided with a water outlet end (210) sleeved on the liquid outlet end of the pump casing (100), and one end of the water outlet end (210) is in contact with one side of the noise reduction ring (300); the inner side of the water outlet end (210) is provided with rifling (211); the noise reduction ring (300) comprises a ring seat (310) and a guide strip (320); the guide strip (320) is in a spiral strip shape and is fixedly mounted on the inner side of the ring seat (310); the guide strip (320) is arranged in an oblique conical shape and the inner eaves are inclined along the liquid outlet direction of the pump casing (100).

2. A water pump guide shell according to claim 1, characterized in that: The inner lining layer (200) is a rubber material component, and the shape and structure of the inner lining layer (200) are compatible with the shape and structure of the pump casing (100).

3. A water pump guide shell according to claim 1, characterized in that: A lining pressure plate (220) is provided on the inner side of the inner lining layer (200), and a surface of the lining pressure plate (220) is provided with rifling (211) penetrating the inner lining layer (200) and the pump casing (100), and one end of the rifling (211) penetrates to the outer side of the pump casing (100).

4. A water pump guide shell according to claim 3, characterized in that: One side of the inner lining layer (200) is in the shape of a flat disc and is arranged symmetrically with respect to the central plane of the pump casing (100); the lining pressure plate (220) is a component made of polytetrachloroethylene.

5. A water pump guide shell according to claim 1, characterized in that: The rifling (211) is a spiral structure, the rifling (211) on the surfaces of the two water outlet ends (210) is continuous, and the inner side of the rifling (211) is in the shape of a smooth surface.

6. A water pump guide shell according to claim 1, characterized in that: The guide strips (320) are rubber material components and are arranged in a spiral direction; spiral gaps are provided between the guide strips (320), and the width of the gaps is less than or equal to the width of the guide strips (320).

7. A water pump guide shell according to claim 1, characterized in that: The inner diameter of the guide strip (320) is greater than or equal to the inner diameter of the port of the water outlet end (210).

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