Pump casing

Abstract

A pump casing comprises a casing body and a foot stool arranged at the bottom of the casing body, a water chamber is formed between a motor body of the casing body and a casing bottom cover arranged at the bottom of the motor body, a water inlet communicated with the water chamber is formed in the casing bottom cover, and the foot stool comprises an annular frame body. The waterproof gasket and the foot stool sealing pad are arranged on the inner ring portion and the outer ring portion of the annular frame body respectively, the foot stool sealing pad or the waterproof gasket can be replaced individually when materials are aged, a filter is arranged in a channel of the annular frame body, the annular frame body is locked to the bottom of the cover shell bottom cover through a locking element, and the locking element is located between the inner ring portion and the outer ring portion. The inner ring part is combined with the frame body positioning part at the bottom of the housing bottom cover, the waterproof gasket is arranged between the top of the inner ring part and the frame body positioning part, and the top of the foot stool sealing pad is in sealing contact with the housing body, so that the sealing performance of the foot stool and the bottom of the housing body is improved, and the low-absorption performance of the pump is ensured; and good mechanical strength is provided.

Description

Technical Field

[0001] This utility model relates to a pump, and more particularly to a pump housing. Background Technology

[0002] The existing pump structure consists of a casing installed on the outside of the pump unit. The motor body inside the casing provides waterproof protection for the pump unit's motor. The impeller, driven by the motor, is located in a water chamber between the bottom of the motor body and the bottom cover of the casing. The bottom cover of the casing has an inlet that connects to the water chamber, and the casing has an outlet that connects to the water chamber. A stand is installed below the casing, and a filter is installed in the stand's frame plate. The frame plate, combined with a waterproof ring and a sealing gasket, is tightly sealed to the casing and secured with screws. The filter is located below the inlet, placing the pump in a water-rich environment. The driven rotating impeller creates a negative pressure in the water chamber. Water passing through the filter is drawn into the water chamber through the inlet of the casing and, under the thrust of the rotating impeller, is pumped to the outlet for discharge.

[0003] While the aforementioned existing pumps provide a device with a water-pumping function, low-suction performance is a crucial factor affecting this function. In the existing pump's structure, the legs located at the bottom of the casing, secured to the bottom of the casing with screws on their plate-like panels, suffer from insufficient mechanical strength. Furthermore, the proximity of the sealing gasket and waterproof ring on the plate-like panel results in poor sealing performance. During pumping, external air can easily be drawn into the water chamber through the sealing gasket and waterproof ring, affecting the pump's low-suction function. Secondly, the legs are of a one-piece construction, meaning the sealing gasket and waterproof ring are directly formed into the plate-like panel, lacking replaceability. Therefore, when any material in the sealing gasket or waterproof ring on the legs ages, the entire leg must be replaced, resulting in waste. Furthermore, based on the aforementioned pump assembly structure, when the bracket secures its plate-shaped frame to the bottom of the housing with screws, it is prone to deformation due to insufficient mechanical strength of the frame or poor assembly condition, resulting in assembly defects. Utility Model Content

[0004] The purpose of this utility model is to provide a pump housing that solves the technical problems of existing pump housings, such as the waste of replacing the entire one-piece stand when the material ages, poor sealing performance of the waterproof gasket and sealing gasket of the stand with the bottom of the housing body, and the easy generation of assembly defects during the assembly process.

[0005] To achieve the aforementioned objectives, the present invention proposes the following technical solution:

[0006] A pump housing includes a housing body and a bracket assembled at the bottom of the housing body. The housing body has a water chamber and an outlet and an inlet communicating with the water chamber. The bottom of the housing body has the inlet and a bracket positioning part located around the inlet.

[0007] The tripod includes:

[0008] A ring-shaped frame is secured to the bottom of the housing body by a locking element, and has an inner ring and an outer ring located around the inner ring. The locking element is located between the inner ring and the outer ring. The inner ring is combined with the frame positioning part, and the inner ring has a channel communicating with the water inlet.

[0009] An annular waterproof gasket is tightly fitted into the inner ring of the annular frame and is tightly disposed between the top of the inner ring and the positioning part of the frame.

[0010] An annular footplate is tightly fitted onto the outer ring of the annular frame. The top of the footplate contacts the housing body, and the bottom extends below the bottom of the outer ring. The bottom of the footplate has a plurality of spaced-apart water inlets.

[0011] A filter is installed in the inner ring of the annular frame and located below the channel. The filter is located inside the foot sealing pad, and the bottom surface of the filter is higher than the bottom surface of the foot sealing pad. The filter has a water inlet area below it that connects to the plurality of water inlet tanks.

[0012] Furthermore, the housing body includes a motor body and a cover bottom cover that is tightly assembled at the bottom of the motor body. The bottom of the motor body has a body base plate, and the water chamber is formed between the body base plate and the cover bottom cover. The housing body has a water outlet communicating with the water chamber, and the cover bottom cover has a water inlet communicating with the water chamber. A water outlet is formed on one side of the cover bottom cover, and the water outlet has a water outlet channel extending from the water chamber in a tangential direction. The end of the water outlet channel forms the water outlet.

[0013] Furthermore, a fitting recess is formed at the top of the outer ring portion of the annular frame, the foot sealing pad covers the outer ring portion of the annular frame, and the top of the foot sealing pad is embedded in the fitting recess, and the top of the foot sealing pad is in close contact with the housing body.

[0014] Furthermore, the housing body includes a motor body and a cover bottom that is tightly fitted to the bottom of the motor body. The bottom of the motor body has a body base plate, and the water chamber is formed between the body base plate and the cover bottom. The housing body has a water outlet communicating with the water chamber, and the cover bottom has a water inlet communicating with the water chamber. An outer cover is fitted over the outside of the motor body. The outer cover and the motor body have a water outlet channel communicating with the water chamber and forming an upwardly extending water outlet channel. The water outlet channel extends upward to the top of the outer cover to form the water outlet. One side of the cover bottom has a water outlet channel extending tangentially from the water chamber, and the water outlet channel communicates with the bottom end of the water outlet channel.

[0015] Furthermore, the bottom cover of the casing is located inside the bottom end of the outer casing, and a fitting recess is formed at the top of the outer ring portion of the annular frame. The bottom end of the outer casing extends into the fitting recess, and the leg sealing pad covers the outer ring portion of the annular frame. The top of the leg sealing pad is embedded in the fitting recess, and the top of the leg sealing pad is in close contact with the outer peripheral surface of the bottom end of the outer casing.

[0016] Furthermore, the frame positioning part is an annular protrusion that surrounds the periphery of the water inlet and extends downward. The top surface of the inner ring of the annular frame is formed with an interlocking annular groove. The waterproof gasket is installed in the interlocking annular groove. The top surface of the waterproof gasket is in close contact with the bottom surface of the housing body, and the inner ring edge of the waterproof gasket is in close contact with the outer peripheral surface of the frame positioning part.

[0017] The bottom of the housing body forms a downwardly protruding annular flange at the periphery of the bottom end of the water inlet. The annular flange extends into the channel of the annular frame and is close to the filter.

[0018] Furthermore, the top surface of the footplate sealing pad forms a raised annular flange, and the footplate sealing pad is locked to the bottom of the housing body along with the annular frame. The annular flange can be squeezed and deformed to tightly contact the bottom surface of the housing body.

[0019] By creating the front-mounted pump housing, it possesses at least the following technical advantages:

[0020] 1. Reduce unnecessary waste: The pump housing of this utility model utilizes a modular leg structure, in which the leg sealing gasket and waterproof gasket are detachably installed on the outer ring and inner ring of the annular frame, respectively. When the material of the leg sealing gasket or waterproof gasket ages, only the aged leg sealing gasket or waterproof gasket can be replaced without replacing the annular frame and filter, thus reducing unnecessary waste.

[0021] 2. Improve the tightness between the legs and the bottom of the housing body to ensure the pump's low-suction performance: In the structure of the pump housing of this utility model, the waterproof gasket and the leg sealing gasket are not only tightly fitted to the inner and outer rings of the annular frame, but the top of the legs and the bottom of the housing body's cover are also connected by the waterproof gasket and the leg sealing gasket located in the inner and outer rings of the annular frame to the bottom of the cover, respectively, increasing the tightness range of the double-locking structure between the legs and the housing body; on the other hand, the annular frame utilizes multiple locks When the locking element is secured to the bottom of the cover, the locking position of the locking element is located between the waterproof gasket and the foot sealing gasket, which further ensures the tightness between the foot sealing gasket, the waterproof gasket and the bottom of the cover. The waterproof gasket is tightly fitted between the top of the inner ring of the ring frame and the frame positioning part at the bottom of the cover, which increases the difficulty of external air being sucked into the machine body through the foot sealing gasket and the waterproof gasket. At the same time, the water inlet groove design of the foot sealing gasket can effectively further improve the low suction performance of the pump.

[0022] 3. The stand has good mechanical strength: The stand of the pump housing of this utility model uses a ring frame to provide a plate-shaped filter assembly, and waterproof gaskets and stand sealing gaskets are respectively tightly fitted on the inner ring and outer ring of the ring frame. In this way, the pre-formed ring frame is used as a basic component to provide good mechanical strength in the stand assembly structure.

[0023] 4. Reduce pump assembly defects; As mentioned above, the pump housing of this utility model uses a ring frame to provide a plate-shaped filter assembly, and waterproof gaskets and foot sealing gaskets are tightly fitted on the ring frame. After the foot is locked to the bottom of the housing body, each component can be accurately positioned in the predetermined position, thereby effectively reducing the problem of defects in the pump assembly process.

[0024] The pump housing of this utility model can further form a downwardly protruding annular flange at the bottom edge of the water inlet of the bottom cover of the housing body, thereby reducing the effective water inlet height and enabling the pump to continue to drain water even at extremely low water levels, thus improving low-suction performance.

[0025] The pump housing of this utility model can further form a raised annular flange on the top surface of the foot sealing pad. When the foot sealing pad, which is tightly fitted to the outer ring of the annular frame, is locked to the bottom of the cover as the annular frame is secured, the annular flange is squeezed and deformed to tightly contact the bottom surface of the cover, increasing the difficulty for air to enter from the outside to the inside.

[0026] The pump housing of this utility model can be further configured such that a water outlet is formed on one side of the bottom cover of the housing body, the water outlet having a water channel extending tangentially from the water chamber, and the water outlet forming at the end of the water channel; or, the housing body is fitted with an outer cover outside the motor body, the outer cover and the motor body having a water channel connecting the water chamber and forming an upward-extending water channel, the water channel extending upward to the top of the outer cover to form the water outlet, and one side of the bottom cover of the cover having a water channel extending tangentially from the water chamber, the water channel connecting to the bottom end of the water channel. In this way, when the impeller driven by the pump unit rotates in the water chamber to perform the drainage action, the water channel extending tangentially relative to the circular water chamber improves the smoothness of drainage. Attached Figure Description

[0027] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the pump housing of this utility model, which is combined with a pump unit to form a pump.

[0028] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0029] Figure 3 for Figure 1 , Figure 2 A partial perspective view of an embodiment of the pump housing shown.

[0030] Figure 4 for Figure 1 , Figure 2 A perspective view of a portion of the pump housing embodiment shown.

[0031] Figure 5 for Figure 3 and Figure 4 The diagram shows a partial exploded perspective view of the pump housing embodiment.

[0032] Figure 6 for Figure 5 The diagram shows a three-dimensional view of the tripod sealing pad from another perspective.

[0033] Figure 7 for Figure 3 and Figure 4 A partial top view of the pump housing embodiment shown.

[0034] Figure 8 This is a cross-sectional schematic diagram of another embodiment of the pump housing of this utility model, which is combined with a pump unit to form a pump.

[0035] Figure 9 for Figure 8 A magnified view of a portion of the image.

[0036] Label Explanation:

[0037] 1: Pump unit

[0038] 10: Motor

[0039] 11: Impeller

[0040] 2: Pump housing

[0041] 20: Chassis Body

[0042] 200: Water Chamber

[0043] 201: Outlet

[0044] 21: Motor body

[0045] 21A: Motor frame

[0046] 21B: Top Cover

[0047] 21C: Bearing housing

[0048] 21D: Shaft Seal Seat

[0049] 210:Body base plate

[0050] 22: Bottom cover of the casing

[0051] 22A: Water inlet shell

[0052] 22B: Bottom cover shell

[0053] 220:Water inlet

[0054] 221: Frame positioning section

[0055] 222: Annular flange

[0056] 223: Water outlet section

[0057] 2230:Water outlet

[0058] 23: Outer casing

[0059] 230: Water outlet channel

[0060] 30: Tripod

[0061] 31: Circular frame

[0062] 311: Inner Ring Road

[0063] 312: Outer Ring Road

[0064] 313: Channel

[0065] 314: Fitting recess

[0066] 315: Fitting ring groove

[0067] 32: Waterproof gasket

[0068] 33: Tripod Sealing Pads

[0069] 331: Water inlet tank

[0070] 332: Annular flange

[0071] 34: Filter

[0072] 340: Water Entry Area

[0073] 341: Filter Plate Section

[0074] 342: Circumferential edge

[0075] 35: Locking element. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0077] like Figure 1 and Figure 8 The figures illustrate two embodiments of the pump housing 2 of this utility model. As can be seen from these figures, the pump housing 2 provides waterproof protection for a pump unit 1 and effectively performs pumping operations. The pump unit 1 is a prior art product, and its specific components will not be described in detail. Basically, the pump unit 1 includes a motor 10 and an impeller 11 driven by the motor 10. The pump housing 2 includes a housing body 20 and a support 30. The specific components of the housing body 20 and the support 30 will be further described below.

[0078] like Figures 1 to 2 and Figures 8 to 9 As shown, the housing body 20 includes a motor body 21 and a cover bottom cover 22. The bottom of the motor body 21 has a body base plate 210. The cover bottom cover 22 is tightly assembled to the bottom of the motor body 21, and a water chamber 200 is formed between the body base plate 210 and the cover bottom cover 22. The motor 10 of the pump unit 1 is sealed and waterproofly installed in the motor body 21. The impeller 11 that can be driven by the motor 10 is located in the water chamber 200. A water inlet 220 communicating with the water chamber 200 is formed in the middle of the cover bottom cover 22. The bottom of the cover bottom cover 22 has a frame positioning part 221. The housing body 20 also has a water outlet 201 communicating with the water chamber 200.

[0079] like Figure 1 and Figure 2 In the embodiment shown, the motor body 21 of the housing body 20 includes a motor frame 21A, an upper cover 21B disposed on the top of the motor frame 21A, and a bearing seat 21C disposed at the bottom of the motor frame 21A. The motor 10 of the pump unit 1 is disposed in the space between the motor frame 21A, the upper cover 21B and the bearing seat 21C. The body base plate 210 is a part of the bearing seat 21C. The spindle of the motor 10 passes through the body base plate 210 of the bearing seat 21C and is assembled with the impeller 11 below the body base plate 210.

[0080] like Figures 1 to 4 and Figure 7 In the embodiment shown, a water outlet 223 is formed on one side of the bottom cover 22 of the housing. The water outlet 223 has a water outlet channel 2230 extending from the water chamber 200 in a tangential direction, and a water outlet 201 is formed at the end of the water outlet channel 2230. In this way, when the impeller 11 driven by the motor 10 in the pump unit 1 rotates in the water chamber 200 to perform the drainage action, the smoothness of drainage is improved by utilizing the water outlet channel 2230 extending in a tangential direction relative to the water chamber 200.

[0081] like Figures 1 to 4 and Figure 7 In the embodiment shown, the bottom cover 22 of the casing is a single component and has a water inlet shell 22A, which forms the water chamber 200 between the water inlet shell 22A and the bottom plate 210 of the main body.

[0082] like Figure 8 and Figure 9 In another embodiment shown, the motor body 21 of the housing body 20 includes a motor frame 21A, a top cover 21B disposed on the top of the motor frame 21A, and a shaft seal seat 21D disposed at the bottom of the motor frame 21A. The body base plate 210 is part of the shaft seal seat 21D. The motor 10 of the pump unit 1 is disposed in the space between the motor frame 21A, the top cover 21B and the shaft seal seat 21D. The spindle of the motor 10 passes through the body base plate 210 of the shaft seal seat 21D and the impeller 11 is assembled below the body base plate 210.

[0083] like Figure 8 and Figure 9As shown, the housing body 20 is also fitted with an outer cover 23 on the outside of the motor body 21. The bottom cover 22 of the cover is located inside the bottom end of the outer cover 23. The outer cover 23 and the motor body 21 have a water chamber 200 connected and form an upwardly extending water outlet channel 230. The water outlet channel 230 extends to the top of the outer cover 23 to form a water outlet 201. One side of the bottom cover 22 has a water outlet channel 2230 extending from the water chamber 200 in a tangential direction. The water outlet channel 2230 is connected to the bottom end of the water outlet channel 230 to facilitate smooth drainage.

[0084] like Figures 8 to 9 In the embodiment shown, the bottom cover 22 is a combination structure of two parts, which has a water inlet shell 22A and a bottom cover shell 22B provided on the water inlet shell 22A. The bottom cover shell 22B is connected to the shaft seal seat 21D of the motor body 21, and the water chamber 200 is formed between the water inlet shell 22A and the bottom plate 210 of the body.

[0085] At Figure 2 and Figure 9 In the disclosed embodiment, the frame positioning part 221 is an annular protrusion that surrounds the periphery of the water inlet 220 and extends downward, thereby providing a structure that facilitates the positioning of the tripod 30.

[0086] At Figure 2 and Figure 9 In the disclosed embodiment, the bottom of the water inlet shell 22A of the cover bottom cover 22 forms a downwardly protruding annular flange 222 at the periphery of the bottom end of the water inlet 220, thereby reducing the effective water inlet height position of the water inlet 220, so that the pump can continue to drain water even when the water level is extremely low.

[0087] like Figures 2 to 6 and Figure 9 As shown, the stand 30 includes an annular frame 31, a waterproof gasket 32, a stand sealing gasket 33, and a filter 34. The annular frame 31 is made of metal and manufactured by casting, forging, or other molding methods, providing the necessary mechanical strength to the stand 30. The annular frame 31 has an inner ring portion 311 and an outer ring portion 312 located around the inner ring portion 311. A channel 313 is formed within the inner ring portion 311. The annular frame 31 is locked to the bottom of the water inlet portion 22A of the cover bottom cover 22 by a plurality of locking elements 35, so that the channel 313 connects to the water inlet 220. An annular flange 222 protruding downwards from the bottom periphery of the water inlet 220 extends into the channel 313. The plurality of locking elements 35 are located between the inner ring portion 311 and the outer ring portion 312. The inner ring portion 311 is combined with the frame positioning portion 221. Figure 2 and Figure 9As shown, a fitting recess 314 is formed at the top of the outer ring portion 312 of the ring frame 31.

[0088] like Figures 2 to 6 and Figure 9 As shown, the waterproof gasket 32 ​​is an annular soft ring. The waterproof gasket 32 ​​is tightly fitted onto the inner ring portion 311 of the annular frame 31 and is tightly disposed between the top of the inner ring portion 311 and the frame positioning portion 221. In this embodiment, the top surface of the inner ring portion 311 of the annular frame 31 forms a fitting annular groove 315. The waterproof gasket 32 ​​is a ring with a rectangular cross-section and is installed in the fitting annular groove 315. The top surface of the waterproof gasket 32 ​​is in close contact with the bottom surface of the water inlet shell portion 22A, and the inner ring edge of the waterproof gasket 32 ​​is in close contact with the outer peripheral surface of the frame positioning portion 221 of the water inlet shell portion 22A.

[0089] like Figures 2 to 6 and Figure 9 As shown, the leg sealing pad 33 is an annular pad and is tightly fitted onto the outer ring portion 312 of the annular frame 31. The leg sealing pad 33 covers the outer ring portion 312 of the annular frame 31, the top of the leg sealing pad 33 is embedded in the fitting recess 314, and the top of the leg sealing pad 33 is in close contact with the housing body 20. The bottom of the leg sealing pad 33 extends to below the bottom of the outer ring portion 312, and the bottom of the leg sealing pad 33 has a plurality of spaced water inlets 331.

[0090] like Figure 2 As shown, in the embodiment where a water outlet 223 with a water outlet channel 2230 is directly formed on one side of the bottom cover 22 of the housing, the top surface of the foot sealing pad 33 directly and tightly contacts the bottom surface of the water inlet shell portion 22A of the bottom cover 22. Figure 6 As shown, preferably, the top surface of the leg sealing pad 33 forms a raised annular flange 332. When the leg sealing pad 33, which is tightly fitted to the outer ring portion 312 of the annular frame 31, is locked to the bottom of the water inlet shell portion 22A along with the annular frame 31, the annular flange 332 is further squeezed and deformed to tightly contact the bottom surface of the water inlet shell portion 22A.

[0091] like Figure 8 and Figure 9 As shown, in an embodiment where the housing body 20 is fitted with an outer cover 23 on the outside of the motor body 21, the bottom end of the outer cover 23 extends into the fitting recess 314, the top of the leg sealing pad 33 is embedded in the fitting recess 314 of the annular frame 31, and the inner circumferential surface of the top of the leg sealing pad 33 is in close contact with the outer wall surface of the bottom end of the outer cover 23.

[0092] like Figure 2 and Figure 9As shown, the filter 34 is installed in the inner ring portion 311 of the annular frame 31 and is located below the channel 313. The filter 34 is located inside the foot sealing pad 33 and the bottom surface of the filter 34 is higher than the bottom surface of the foot sealing pad 33. Below the filter 34 is a water inlet area 340 that communicates with the plurality of water inlet tanks 331.

[0093] like Figure 2 , Figure 5 and Figure 9 As shown, the filter 34 can be a component formed from a metal sheet, having a plurality of small-diameter filter holes arranged at intervals. The filter 34 includes a filter plate portion 341 and an annular edge portion 342 extending upward from the outer periphery of the filter plate portion 341. The filter plate portion 341 is provided with a plurality of small-diameter filter holes at intervals. The annular edge portion 342 is fixed between the annular frame 31 and the frame positioning portion 221. The bottom surface of the filter plate portion 341 is slightly higher than the bottom surface of the foot sealing pad 33. The space below the filter plate portion 341 is the water inlet area 340.

[0094] When the pump housing 2 of this utility model is equipped with the pump unit 1, the pump can be placed in a water-containing working environment to perform water pumping operations. Figures 1 to 2 Taking the pump embodiment shown as an example, the water in the working environment is exposed to the ground (or bottom surface) by the foot sealing pad 33 of the foot 30. After the water in the working environment is filtered out by the multiple water inlet grooves 331 at the bottom of the foot sealing pad 33 and the filter 34, the water enters the channel 313 of the inner ring 311 of the annular frame 31 and reaches the effective water inlet height position of the water inlet 220 of the water inlet shell 22A. The impeller 11 driven to rotate creates a negative pressure in the water chamber 200, so that the water inlet 220 of the water inlet shell 22A is sucked into the water chamber 200, and the thrust of the impeller 11 pushes the water toward the outlet 201.

Claims

1. A pump housing, comprising a housing body and legs assembled at the bottom of the housing body, characterized in that: The casing body has a water chamber, and an outlet and an inlet communicating with the water chamber; the bottom of the casing body has the inlet, and a frame positioning part located around the inlet. The tripod includes: A ring-shaped frame is secured to the bottom of the housing body by a locking element, and has an inner ring and an outer ring located around the inner ring. The locking element is located between the inner ring and the outer ring. The inner ring is combined with the frame positioning part, and the inner ring has a channel communicating with the water inlet. An annular waterproof gasket is tightly fitted into the inner ring of the annular frame and is tightly disposed between the top of the inner ring and the positioning part of the frame. An annular footplate is tightly fitted onto the outer ring of the annular frame. The top of the footplate contacts the housing body, and the bottom extends below the bottom of the outer ring. The bottom of the footplate has a plurality of spaced-apart water inlets. A filter is installed in the inner ring of the annular frame and located below the channel. The filter is located inside the foot sealing pad, and the bottom surface of the filter is higher than the bottom surface of the foot sealing pad. The filter has a water inlet area below it that connects to the plurality of water inlet tanks.

2. The pump housing according to claim 1, characterized in that: The housing body includes a motor body and a cover bottom that is tightly fitted to the bottom of the motor body. The bottom of the motor body has a body base plate, and the water chamber is formed between the body base plate and the cover bottom. The housing body has a water outlet communicating with the water chamber, and the cover bottom has a water inlet communicating with the water chamber. A water outlet is formed on one side of the cover bottom, and the water outlet has a water channel extending from the water chamber in a tangential direction. The end of the water channel forms the water outlet.

3. The pump housing according to claim 1, characterized in that: The outer ring of the ring frame has a fitting recess at the top. The foot sealing pad covers the outer ring of the ring frame, and the top of the foot sealing pad is embedded in the fitting recess. The top of the foot sealing pad is in close contact with the housing body.

4. The pump housing according to claim 1, characterized in that: The housing body includes a motor body and a cover bottom that is tightly fitted to the bottom of the motor body. The bottom of the motor body has a body base plate, and the water chamber is formed between the body base plate and the cover bottom. The housing body has a water outlet communicating with the water chamber, and the cover bottom has a water inlet communicating with the water chamber. An outer cover is fitted over the motor body, and the outer cover and the motor body have a water outlet channel communicating with the water chamber and forming an upwardly extending water outlet channel. The water outlet channel extends upward to the top of the outer cover to form the water outlet. One side of the cover bottom has a water outlet channel extending tangentially from the water chamber, and the water outlet channel communicates with the bottom end of the water outlet channel.

5. The pump housing according to claim 4, characterized in that: The bottom cover of the casing is located inside the bottom end of the outer casing. The top of the outer ring of the annular frame forms a fitting recess. The bottom end of the outer casing extends into the fitting recess. The foot sealing pad covers the outer ring of the annular frame. The top of the foot sealing pad is embedded in the fitting recess, and the top of the foot sealing pad is in close contact with the outer peripheral surface of the bottom end of the outer casing.

6. The pump housing according to any one of claims 1 to 5, characterized in that: The frame positioning part is an annular protrusion that surrounds the water inlet and extends downward. The top surface of the inner ring of the annular frame is formed with an interlocking groove. The waterproof gasket is installed in the interlocking groove. The top surface of the waterproof gasket is in close contact with the bottom surface of the housing body, and the inner ring edge of the waterproof gasket is in close contact with the outer peripheral surface of the frame positioning part.

7. The pump housing according to any one of claims 1 to 5, characterized in that: The bottom of the housing body forms a downwardly protruding annular flange at the periphery of the bottom end of the water inlet. The annular flange extends into the channel of the annular frame and is close to the filter.

8. The pump housing according to claim 6, characterized in that: The bottom of the housing body forms a downwardly protruding annular flange at the periphery of the bottom end of the water inlet. The annular flange extends into the channel of the annular frame and is close to the filter.

9. The pump housing according to any one of claims 1 to 5, characterized in that: The top surface of the footplate sealing pad forms a raised annular flange, and the footplate sealing pad is locked to the bottom of the housing body along with the annular frame. The annular flange can be squeezed and deformed to tightly contact the bottom surface of the housing body.

10. The pump housing according to claim 6, characterized in that: The top surface of the footplate sealing pad forms a raised annular flange, and the footplate sealing pad is locked to the bottom of the housing body along with the annular frame. The annular flange can be squeezed and deformed to tightly contact the bottom surface of the housing body.

Images