Centrifugal pump

Abstract

A centrifugal pump comprises a pump body, a volute and a driving impeller, the volute is arranged on the pump body, the driving impeller is arranged at the power output end of the pump body and located in the volute, the centrifugal pump is characterized by further comprising a pipe connector arranged at the water outlet end of the volute, and the water flowing direction of the pipe connector is perpendicular to the water outlet direction of the volute. And a filter material for purifying water is arranged in the pipe joint. The water purification function is integrated in the pipe joint, 90-degree turning in the water flow direction is completed through the pipe joint, the overall structure is compact, and arrangement in the gas water heater is facilitated.

Description

Technical Field

[0001] The utility model relates to a water pump, in particular to a centrifugal pump which can be suitable for pressurizing a gas water heater. Background Art

[0002] The zero cold water function of the gas water heater allows users to have hot water when they turn on the tap, but this requires a water pump to circulate the water so that the machine can heat the cold water in the pipe. At the same time, some users have low water flow and low water pressure, so a water pump is also used to increase the water flow. Therefore, the performance of the water pump plays a key role in the comfort of users' hot water use.

[0003] Existing water heaters generally use centrifugal pumps, which include a pump body, an impeller arranged on a pump body rotor, and a volute arranged on the periphery of the impeller. The volute has a water inlet port corresponding to the central cavity and an output port for receiving the water outlet end of the impeller.

[0004] Existing water heaters have diversified functions, and more and more water heaters have water purification functions. However, the existing water purification function is often achieved by installing a filter element on the water inlet pipe or the water outlet pipe, which occupies the internal space of the water heater. In addition, among the user pain points of water heaters, water channel noise has always been an industry problem, and the water outlet end of the centrifugal pump often changes the flow channel angle, which is the source of noise. How to reduce the noise caused by the water outlet end of the centrifugal pump has always been the research direction of technical personnel in this field. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a centrifugal pump integrating a water purification function in view of the above technical status quo.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a centrifugal pump, including a pump body, a volute and a driving impeller, the aforementioned volute is arranged on the pump body, the aforementioned driving impeller is arranged at the power output end of the pump body and is located in the volute, and is characterized in that the centrifugal pump also includes a pipe joint arranged on the water outlet end of the aforementioned volute, the water flow direction of the pipe joint is perpendicular to the water outlet direction of the volute, and a filter material for purifying water is arranged in the pipe joint.

[0007] In order to make the structure compact, the pipe joint is arranged on one side of the pump body and parallel to the central axis of the driving impeller.

[0008] The pipe joint is provided with blades capable of generating swirls, which are located at the water inlet end of the filter material. The blades can comb the chaotic and disordered water flow into swirls, which can make the contact with the filter material more complete; noise reduction is achieved by generating damping through the collision and friction between the filter materials and between the filter materials and the wall surface, thereby achieving vibration reduction and noise reduction. Therefore, the filter material and the blades can be used together to achieve a stronger water purification effect.

[0009] Furthermore, the blades are arranged in a sleeve, the sleeve is arranged in a pipe joint, and a filter box for accommodating filter material is arranged at the bottom of the sleeve.

[0010] Preferably, the bottom of the sleeve has a lateral opening, the water flow direction of the water outlet port of the pipe joint is perpendicular to the water flow direction of the inner cavity of the pipe joint, and the inner end of the water outlet port of the pipe joint is arranged opposite to the lateral opening of the sleeve.

[0011] The filter box and the sleeve are preferably assembled in the following manner: a support ring is detachably provided at the bottom of the sleeve, and the bottom of the filter box is arranged on the support ring.

[0012] Furthermore, a steering member is provided on the water outlet port of the volute, and the steering member has a horizontal channel and a vertical channel connected to and perpendicular to the horizontal channel, the water inlet end of the horizontal channel is connected to the water outlet end of the volute, and the water outlet end of the vertical channel is connected to the water inlet end of the pipe joint. The steering member can reduce the length of the outlet section of the water pump and rectify and reduce losses, adjust the speed, direction and turbulence of the water flow, and cut off the noise transmission path.

[0013] Preferably, the diverting member further comprises a diverter channel perpendicular to the horizontal channel, the diverter channel has a smaller diameter than the vertical channel and is connected to the water inlet end of the pipe joint.

[0014] Preferably, the cross-section of the vertical channel is semicircular, and the water outlet of the horizontal channel is located on one side of the vertical channel.

[0015] Furthermore, the volute is extended with a mounting portion, the steering member is arranged in the mounting portion, and the volute is connected to the pipe joint via the mounting portion.

[0016] Considering the convenience of installing the centrifugal pump inside the gas water heater, a first mounting plate is provided on one side of the volute, and a second mounting plate is provided on one side of the pump body. Further, the mounting surface of the first mounting plate and the mounting surface of the second mounting plate are in the same plane.

[0017] Compared with the prior art, the utility model has the advantages of integrating a water purification function in the pipe joint, completing a 90° turn in the water flow direction through the pipe joint, and having a compact overall structure, which is convenient for arrangement in a gas water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of an embodiment.

[0019] Figure 2 for Figure 1 Exploded diagram of .

[0020] Figure 3 for Figure 1 An enlarged stereoscopic cross-sectional view of .

[0021] Figure 4 for Figure 2 Enlarged disassembled assembly drawing of the middle sleeve and filter box.

[0022] Figure 5 for Figure 4 Schematic diagram of the structure of the middle sleeve from another perspective.

[0023] Figure 6 Enlarged perspective view of the steering component.

[0024] Figure 7 It is a schematic diagram of the structure of the steering member from another perspective. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the centrifugal pump in this embodiment includes a pump body 1, a volute 2, a driving impeller 11, a sleeve 3, a filter box 5, a pipe joint 6 and a steering member 4. A first mounting plate 71 is provided on one side of the volute 2, and a second mounting plate 72 is provided on one side of the pump body 1. The mounting surface of the first mounting plate 71 and the mounting surface of the second mounting plate 72 are in the same plane.

[0027] The volute 2 is mounted on the pump body 1 by means of screws 12, and the water inlet direction of the water inlet port 22 of the volute 2 is perpendicular to the water outlet direction. The driving impeller 11 is arranged at the power output end of the pump body 1 and is located in the volute 2, and the volute 2 is extended with a mounting portion 21, and the steering member 4 is arranged in the mounting portion 21, and the volute 2 is connected to the pipe joint 6 through the mounting portion 21.

[0028] The water flow direction of the pipe joint 6 is perpendicular to the water outlet direction of the volute 2. The pipe joint 6 is provided with a filter material (not shown in the figure) for water purification. The filter material can be IPSE, activated carbon, etc. The pipe joint 6 is provided on one side of the pump body 1 and parallel to the central axis of the driving impeller 11.

[0029] Combination Figure 4 and Figure 5 As shown, the sleeve 3 is arranged in the pipe joint 6, and a filter box 5 for accommodating filter material is arranged at the bottom of the sleeve 3. The blades 8 are formed in the inner cavity at the upper end of the sleeve 3, and the blades 8 can generate swirl blades 8. The blades 8 are located at the water inlet end of the filter material. The blades 8 can be made of magnetic materials to achieve magnetization treatment. The bottom of the sleeve 3 has a lateral opening 32, and the water flow direction of the water outlet port of the pipe joint 6 is perpendicular to the water flow direction of the inner cavity of the pipe joint 6, and the inner end of the water outlet port of the pipe joint 6 is arranged opposite to the lateral opening 32 of the sleeve 3. A support ring 31 is detachably arranged at the bottom of the sleeve 3, and the bottom of the filter box 5 is arranged on the support ring 31.

[0030] The combination of filter media and blades can achieve a stronger water purification effect, because the blades can comb the chaotic and disordered water flow into a vortex, which is in more complete contact with the filter media. Noise reduction can be achieved by generating damping through the collision and friction between the filter media and between the filter media and the wall, thereby achieving vibration reduction and noise reduction.

[0031] The sleeve 3 , the blades 8 and the filter box 5 in this embodiment can be made into a component, which is convenient for installation in the pipe joint 6 .

[0032] Combination Figure 6 and Figure 7 As shown, a steering member 4 is provided on the water outlet port of the volute 2, and the steering member 4 has a horizontal channel 41 and a vertical channel 42 connected to and perpendicular to the horizontal channel 41. The water inlet end of the horizontal channel 41 is connected to the water outlet end of the volute 2, and the water outlet end of the vertical channel 42 is connected to the water inlet end of the pipe joint 6. The steering member 4 also has a diversion channel 43 perpendicular to the horizontal channel 41, the diameter of the diversion channel 43 is smaller than that of the vertical channel 42 and is connected to the water inlet end of the pipe joint 6. The cross section of the vertical channel 42 is semicircular, and the water outlet of the horizontal channel 41 is located on one side of the vertical channel 42.

[0033] The steering piece can not only reduce the length of the outlet section of the water pump, but also rectify and reduce losses, adjust the speed, direction and turbulence of the water flow, and cut off the noise transmission path. After flowing through the driving impeller, it flows into the steering piece and is diverted and diverted inside the steering piece. The water flows into the steering piece from the horizontal channel, part of the water flows into the diversion channel in advance, and the remaining water flows into the vertical channel. The water flows in the diversion channel and the vertical channel merge in the pipe joint.

[0034] The vertical channel can complete a 90° turn, and the diversion channel can divert the water flow in advance, thereby reducing the impact of the turbulent and rapid water flow on the inner wall surface and preventing a large amount of energy from being lost. After the diversion, the speed of the water flow will be weakened, and the turn can be completed more gently in the vertical channel, reducing energy loss and also helping to reduce water flow noise and vibration noise.

[0035] The diameter of the horizontal channel to the vertical channel increases gradually, releasing the pressure step by step. Each stage passes a different frequency to further reduce the noise. At the same time, the space expands step by step, which can also better rectify and decelerate, reduce the generation of eddy currents, and help reduce noise.

Claims

1. A centrifugal pump, comprising a pump body (1), a volute (2) and a driving impeller (11), wherein the volute (2) is arranged on the pump body (1), and the driving impeller (11) is arranged at the power output end of the pump body (1) and located in the volute (2), characterized in that The centrifugal pump further comprises a pipe joint (6) arranged on the water outlet end of the volute (2), the water flow direction of the pipe joint (6) being perpendicular to the water outlet direction of the volute (2), and a filter material for purifying water being arranged inside the pipe joint (6).

2. The centrifugal pump according to claim 1, characterized in that The pipe joint (6) is arranged on one side of the pump body (1) and is parallel to the central axis of the driving impeller (11).

3. The centrifugal pump according to claim 1, characterized in that The pipe joint (6) is provided with a blade (8) capable of generating a swirling flow, and the blade (8) is located at the water inlet end of the filter material.

4. The centrifugal pump according to claim 3, characterized in that The blades (8) are arranged in a sleeve (3), the sleeve (3) is arranged in a pipe joint (6), and a filter box (5) for accommodating filter material is provided at the bottom of the sleeve (3).

5. The centrifugal pump according to claim 4, characterized in that The bottom of the sleeve (3) has a lateral opening (32), the water flow direction of the water outlet port of the pipe joint (6) is perpendicular to the water flow direction of the inner cavity of the pipe joint (6), and the inner end of the water outlet port of the pipe joint (6) is arranged opposite to the lateral opening (32) of the sleeve (3).

6. The centrifugal pump according to claim 4, characterized in that The bottom of the sleeve (3) is detachably provided with a support ring (31), and the bottom of the filter box (5) is arranged on the support ring (31).

7. The centrifugal pump according to claim 1, characterized in that A steering member (4) is provided on the water outlet port of the volute (2), and the steering member (4) has a horizontal channel (41) and a vertical channel (42) which is connected to and perpendicular to the horizontal channel (41), the water inlet end of the horizontal channel (41) is connected to the water outlet end of the volute (2), and the water outlet end of the vertical channel (42) is connected to the water inlet end of the pipe joint (6).

8. The centrifugal pump according to claim 7, characterized in that The diverting member (4) also has a diverting channel (43) perpendicular to the horizontal channel (41); the diverting channel (43) has a smaller diameter than the vertical channel (42) and is connected to the water inlet end of the pipe joint (6).

9. The centrifugal pump according to claim 7, characterized in that The cross section of the vertical channel (42) is semicircular, and the water outlet of the horizontal channel (41) is located on one side of the vertical channel (42).

10. The centrifugal pump according to claim 7, characterized in that The volute (2) is extended to be provided with a mounting portion (21), the steering member (4) is arranged in the mounting portion (21), and the volute (2) is connected to the pipe joint (6) via the mounting portion (21).

11. The centrifugal pump according to claim 1, characterized in that A first mounting plate (71) is provided on one side of the volute (2), and a second mounting plate (72) is provided on one side of the pump body (1).

12. The centrifugal pump according to claim 11, characterized in that The mounting surface of the first mounting plate (71) and the mounting surface of the second mounting plate (72) are located in the same plane.

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