A water pump housing assembly

Abstract

The utility model provides a kind of water pump pump shell assembly, belong to mechanical technical field.It solves the problem of existing water pump inconvenient assembly.This water pump pump shell assembly includes bucket-shaped pump shell, pump shell left end is closed, right end is open, filter bucket is vertically arranged in pump shell, annular flanging is formed on the outer wall of filter bucket upper end, water inlet hole and water outlet hole are arranged on the top of pump shell, pump shell is integrated structure, the inner chamber of pump shell is composed of water inlet cavity and impeller cavity which are continuously distributed from left to right, the size of water inlet cavity right side is less than impeller cavity;Water inlet hole and water outlet hole are respectively connected with water inlet cavity and impeller cavity, water guide cover made of transparent material is detachably fixed on the water inlet hole of pump shell, water inlet hole is formed in the side wall of water guide cover, and the water inlet hole is connected with the outside;Filter bucket is arranged in water inlet cavity, annular positioning step is formed on the inner wall of water inlet hole upper end, positioning step is composed of annular side wall and annular bottom wall, and annular flanging is clamped between annular bottom wall and water guide cover.This water pump pump shell assembly is convenient to assemble.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a water pump, particularly a water pump casing assembly. Background Technology

[0002] A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, thereby increasing the liquid's energy.

[0003] An existing water pump structure, such as the one disclosed in the Chinese Patent Database (CN 203285758U) for a swimming pool, includes a pump body and a pump motor connected to each other. The pump body has the characteristic that a filter device is connected to its inlet. The filter device includes an inlet channel, a filter bucket, a filter screen, a transparent cover, and an outlet channel. The inlet channel and the outlet channel are respectively located on opposite side walls of the filter bucket. The filter screen is located between the inlet channel and the outlet channel within the filter bucket. The transparent cover is located at the open end of the filter bucket. The outlet channel is connected to the inlet of the pump body.

[0004] In the aforementioned water pump, the filter device and the pump body are separate structures, and connecting the two involves multiple assembly processes, making operation relatively inconvenient. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a water pump casing assembly that is easy to assemble.

[0006] The objective of this utility model can be achieved through the following technical solution: A water pump casing assembly includes a horizontally arranged, barrel-shaped pump casing, with the left end closed and the right end open. A filter barrel is vertically arranged inside the pump casing, and the upper outer wall of the filter barrel has an annular flange. The top of the pump casing has an inlet hole and an outlet hole. The pump casing is characterized by being an integral structure, with its inner cavity consisting of an inlet cavity and an impeller cavity continuously distributed from left to right, and the right side of the inlet cavity being smaller than that of the impeller cavity. The inlet hole and the outlet hole are respectively connected to the inlet cavity and the impeller cavity. A water guide cover made of transparent material is detachably fixed to the pump casing at the inlet hole. A water inlet hole is penetrating the side wall of the water guide cover, and the inlet hole is connected to the outside through the aforementioned water inlet hole. The filter barrel is arranged in the inlet cavity and faces the water guide cover. An annular positioning step is formed on the upper inner wall of the inlet hole. The positioning step is composed of an annular side wall and an annular bottom wall. The annular flange is located in the positioning step and clamped between the annular bottom wall and the water guide cover.

[0007] In actual products, water pumps also include impeller assemblies and pump covers. The impeller assembly includes a volute and an impeller housed inside the volute. During installation, the pump cover is fixed at the right port of the pump casing, the volute is fixed inside the pump cover, and the impeller assembly is installed into the impeller cavity through the right port of the pump casing.

[0008] During use, water flows into the filter bucket through the inlet hole and the inner cavity of the water guide cover. After being filtered by the filter bucket, it flows into the inlet chamber and is pressurized by the impeller assembly before finally being discharged through the outlet hole.

[0009] The pump casing is designed as a single piece to avoid assembly. The filter barrel is positioned between the annular base plate and the water guide cover by being clamped by an annular flange, so that the water guide cover and the filter barrel are positioned synchronously. This greatly reduces the assembly steps of the pump casing components and has the advantages of convenient and easy assembly.

[0010] At the same time, the filter cartridge is positioned directly opposite the water guide cover, which is made of transparent material. This allows the filter cartridge's usage status to be observed through the water guide cover from outside the pump casing, facilitating subsequent filter cartridge cleaning.

[0011] In the aforementioned water pump casing assembly, the water guide cover includes a cover-shaped main body coaxial with the water inlet. The water inlet is located at the upper end of the cover-shaped main body, and the lower end of the cover-shaped main body is detachably fixed to the pump casing. A pressure ring is formed on the bottom wall of the cover-shaped main body, and the pressure ring is pressed against the annular flange. This design optimizes the shape of the water guide cover and facilitates its design and manufacturing.

[0012] In the aforementioned water pump casing assembly, an annular mounting groove is coaxially formed on the annular bottom wall. A sealing ring is provided inside the mounting groove, and the two sides of the sealing ring respectively contact and seal with the bottom wall of the mounting groove and the annular flange.

[0013] In the aforementioned water pump casing assembly, an annular groove is provided on the outer wall of the pressure ring, and an O-ring is provided in the annular groove, with the outer circumferential surface of the O-ring in contact with and sealing the annular sidewall.

[0014] With the cooperation of the sealing ring and O-ring, a reliable seal can be formed between the water guide cover and the filter barrel and the pump casing, preventing water leakage and ensuring stable operation of the water pump.

[0015] In the aforementioned water pump casing assembly, a pull rod is vertically fixed to the annular flange, with its upper end extending out of the water inlet. The pull rod provides a gripping position, facilitating the removal of the filter canister after the water guide cover is removed.

[0016] In the aforementioned water pump casing assembly, the main body of the casing is conical and its diameter gradually increases from top to bottom.

[0017] In the above-mentioned pump casing assembly, a ring-shaped positioning seat is formed on the lower outer wall of the cover-shaped main body, and the positioning seat and the cover-shaped main body are coaxially arranged; the positioning seat is pressed against the top of the pump casing, and the positioning seat is fixed to the pump casing by a ring of bolts, which has the advantages of simple structure and convenient installation.

[0018] In the aforementioned pump casing assembly, an annular sealing step is formed on the inner wall of the pump casing at the left opening of the impeller cavity, and the sealing step is coaxially arranged with the impeller cavity. In actual products, an annular step is formed on the outer wall of the aforementioned volute casing. The annular step and the sealing step cooperate to form a tortuous channel to achieve a labyrinth seal, prevent fluid backflow and leakage, and improve the pump's operating efficiency.

[0019] In the aforementioned water pump casing assembly, a straight pipe is horizontally formed on the upper outer wall of the cover-shaped main body. External threads are provided on the outer wall of the straight pipe, and the inner hole of the straight pipe serves as the aforementioned water inlet. This design facilitates the connection of the water pump to the water inlet pipe.

[0020] Compared with existing technologies, this water pump casing assembly has the following advantages: 1. The pump casing is designed as a single piece to avoid assembly. The filter barrel is positioned between the annular base plate and the water guide cover by being clamped by an annular flange, so that the water guide cover and the filter barrel are positioned synchronously. This greatly reduces the assembly steps of the pump casing components and has the advantages of convenient and easy assembly.

[0021] 2. The filter cartridge is positioned directly opposite the water guide cover, which is made of transparent material. This allows the filter cartridge's operating status to be observed through the water guide cover from outside the pump casing, facilitating subsequent filter cartridge cleaning. Attached Figure Description

[0022] Figure 1 This is a cross-sectional schematic diagram of the water pump casing assembly.

[0023] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0024] Figure 3 This is a three-dimensional schematic diagram of the pump casing.

[0025] In the diagram, 1. Pump casing; 1a. Inlet chamber; 1b. Impeller chamber; 1c. Sealing step; 1d. Inlet hole; 1e. Outlet hole; 1f. Annular side wall; 1g. Annular bottom wall; 2. Filter barrel; 2a. Annular flange; 3. Water guide cover; 3a. Inlet hole; 3b. Cover-shaped body; 3c. Pressure ring; 3d. Positioning seat; 4. Bolt; 5. Sealing ring; 6. O-ring; 7. Tie rod. Detailed Implementation

[0026] 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.

[0027] like Figure 1As shown, the pump casing assembly includes a barrel-shaped pump casing 1, which is horizontally positioned during actual use, with the left end closed and the right end open. A filter barrel 2 is vertically installed inside the pump casing 1, with its opening facing upwards. The side and bottom walls of the filter barrel 2 are densely covered with filter holes for water filtration.

[0028] Specifically like Figure 1 and Figure 3 As shown, the pump casing 1 is a one-piece structure, and preferably a cast integral part. The inner cavity of the pump casing 1 consists of an inlet cavity 1a and an impeller cavity 1b continuously distributed from left to right. The right side of the inlet cavity 1a is smaller than that of the impeller cavity 1b, and the right side of the inlet cavity 1a is directly connected to the left side of the impeller cavity 1b. Further, an annular sealing step 1c is formed on the inner wall of the pump casing 1 at the left opening of the impeller cavity 1b, and the sealing step 1c is coaxially arranged with the impeller cavity 1b. In actual products, an annular step is formed on the outer wall of the pump volute. The annular step and the sealing step 1c cooperate to form a tortuous channel to achieve a labyrinth seal, prevent fluid backflow and leakage, and improve the pump's operating efficiency. The tortuous channel forming method is existing; for details, please refer to a centrifugal pump head disclosed in the Chinese Patent Database (CN221723110U).

[0029] The upper outer wall of the filter barrel 2 has an annular flange 2a, which is coaxial with the filter barrel 2 and the two are integral structures. The top of the pump casing 1 is provided with an inlet hole 1d and an outlet hole 1e. The axes of the inlet hole 1d and the outlet hole 1e are both vertically arranged, and the inlet hole 1d and the outlet hole 1e are respectively connected to the inlet chamber 1a and the impeller chamber 1b. Preferably, the outlet hole 1e is provided with an internal thread to facilitate the connection of the outlet hole 1e to the outlet pipe.

[0030] like Figure 1 and Figure 2 As shown, a water guide cover 3 made of transparent material is detachably fixed to the pump casing 1 at the water inlet 1d. The water guide cover 3 is located on the top of the pump casing 1 and is coaxially arranged with the water inlet 1d. A water inlet hole 3a is penetrating the side wall of the water guide cover 3, and the water inlet 1d communicates with the outside through the water inlet hole 3a. The filter barrel 2 is placed in the water inlet chamber 1a and faces the water guide cover 3. An annular positioning step is formed on the upper inner wall of the water inlet 1d, and the positioning step is coaxially arranged with the water inlet 1d. The positioning step is composed of an annular side wall 1f and an annular bottom wall 1g, and the annular side wall 1f and the annular bottom wall 1g are arranged perpendicularly. An annular flange 2a is located in the positioning step and clamped between the annular bottom wall 1g and the water guide cover 3. At this time, the two ends of the annular flange 2a are in close contact with the annular bottom wall 1g and the water guide cover 3, respectively.

[0031] In the actual product, the water pump also includes an impeller assembly and a pump cover. The impeller assembly includes a volute and an impeller disposed inside the volute. During installation, the pump cover is fixed at the right port of the pump casing 1, the volute is fixed inside the pump cover, and the impeller assembly is installed into the impeller cavity 1b through the right port of the pump casing 1.

[0032] During use, water flows into the filter bucket 2 through the water inlet 3a and the inner cavity of the water guide cover 3. After being filtered by the filter bucket 2, it flows into the water inlet chamber 1a and is pressurized by the impeller assembly before finally being discharged through the water outlet 1e.

[0033] The pump casing 1 is designed as a single piece to avoid assembling the pump casing 1. The filter barrel 2 is clamped between the annular base plate and the water guide cover 3 by the annular flange 2a for positioning, so that the water guide cover 3 and the filter barrel 2 are positioned synchronously. This greatly reduces the assembly steps of the pump casing 1 assembly and has the advantages of convenient and easy assembly.

[0034] Meanwhile, the filter cartridge is positioned directly opposite the water guide cover 3, and the water guide cover 3 is made of transparent material. This allows the filter cartridge 2 to be observed from outside the pump housing 1 through the water guide cover 3, so that the filter cartridge 2 can be cleaned later.

[0035] In this embodiment, The transparent material can be plastic or glass, preferably the water guide cover 3 is made of plastic, and the specific structure of the water guide cover 3 is as follows: the water guide cover 3 includes a cover-shaped body 3b coaxial with the water inlet 1d, the water inlet 3a is located at the upper end of the cover-shaped body 3b, and the lower end of the cover-shaped body 3b is detachably fixed to the pump housing 1. A pressure ring 3c is formed on the bottom wall of the cover-shaped body 3b, and the pressure ring 3c is pressed against the annular flange 2a. The above design optimizes the shape of the water guide cover 3 and facilitates the design and processing of the water guide cover 3.

[0036] in, A straight tube is horizontally formed on the upper outer wall of the cover-shaped main body 3b. The outer wall of the straight tube has external threads, and the inner hole of the straight tube is the aforementioned water inlet 3a. This design facilitates the connection of the water pump to the water inlet pipe.

[0037] The connection between the cover-shaped body 3b and the pump casing 1 is as follows: A ring-shaped positioning seat 3d is formed on the lower outer wall of the cover-shaped body 3b, and the positioning seat 3d and the cover-shaped body 3b are coaxially arranged. The positioning seat 3d is pressed against the top of the pump casing 1, and the positioning seat 3d is fixed to the pump casing 1 by a ring of bolts 4, which has the advantages of simple structure and convenient installation.

[0038] To further explain, an annular mounting groove is coaxially formed on the annular bottom wall 1g, and a sealing ring 5 is installed within the mounting groove. The two sides of the sealing ring 5 respectively contact and seal with the bottom wall of the mounting groove and the annular flange 2a. An annular groove is formed on the outer side wall of the pressure ring 3c, and an O-ring 6 is installed within the annular groove. The outer circumferential surface of the O-ring 6 contacts and seals with the annular side wall 1f. With the cooperation of the sealing ring 5 and the O-ring 6, a reliable seal can be formed between the water guide cover 3 and the filter barrel 2 and the pump casing 1, preventing water leakage and ensuring stable operation of the water pump.

[0039] In the actual product, the main body 3b of the cover is conical with its diameter gradually increasing from top to bottom. A pull rod 7 is vertically fixed on the annular flange 2a, with the upper end of the pull rod 7 extending out of the water inlet hole 1d. The pull rod 7 is provided to offer a gripping position, making it easy to pull out the filter canister 2 after the water guide cover 3 is removed.

[0040] 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.

Claims

1. A water pump casing assembly, comprising a horizontally arranged, barrel-shaped pump casing (1), the left end of the pump casing (1) being closed and the right end being open, a filter barrel (2) being vertically arranged inside the pump casing (1), and an annular flange (2a) being provided on the upper outer wall of the filter barrel (2), and an inlet hole (1d) and an outlet hole (1e) being provided on the top of the pump casing (1), characterized in that, The pump casing (1) is a one-piece structure. The inner cavity of the pump casing (1) consists of an inlet chamber (1a) and an impeller chamber (1b) continuously distributed from left to right, and the right side of the inlet chamber (1a) is smaller than that of the impeller chamber (1b). The inlet hole (1d) and the outlet hole (1e) are respectively connected to the inlet chamber (1a) and the impeller chamber (1b). A water guide cover (3) made of transparent material is detachably fixed to the pump casing (1) at the inlet hole (1d). The side wall of the water guide cover (3) The filter barrel (2) is installed in the water inlet (1a) and is connected to the outside through the water inlet (3a). The filter barrel (2) is installed in the water inlet chamber (1a) and is directly opposite the water guide cover (3). The upper inner wall of the water inlet (1d) is formed with an annular positioning step. The positioning step is composed of an annular side wall (1f) and an annular bottom wall (1g). The annular flange (2a) is located in the positioning step and is clamped between the annular bottom wall (1g) and the water guide cover (3).

2. The water pump casing assembly according to claim 1, characterized in that, The aforementioned water guide cover (3) includes a cover-shaped body (3b) coaxial with the water inlet (1d), the aforementioned water inlet (3a) is located at the upper end of the cover-shaped body (3b), and the lower end of the cover-shaped body (3b) is detachably fixed to the pump casing (1); a pressure ring (3c) is formed on the bottom wall of the cover-shaped body (3b), and the pressure ring (3c) is pressed against the annular flange (2a).

3. The water pump casing assembly according to claim 2, characterized in that, An annular mounting groove is coaxially provided on the annular bottom wall (1g), and a sealing ring (5) is provided in the mounting groove. The two sides of the sealing ring (5) are in contact with the bottom wall of the mounting groove and the annular flange (2a) respectively for sealing.

4. The water pump casing assembly according to claim 3, characterized in that, An annular groove is provided on the outer side wall of the pressure ring (3c), and an O-ring (6) is provided in the annular groove. The outer circumferential surface of the O-ring (6) is in contact with the annular side wall (1f) for sealing.

5. The water pump casing assembly according to claim 1, 2, 3, or 4, characterized in that, A ring of pull rods (7) is vertically fixed on the annular flange (2a), with the upper end of the pull rods (7) extending out of the water inlet hole (1d).

6. The water pump casing assembly according to claim 2, characterized in that, The main body of the cover (3b) is conical and its diameter gradually increases from top to bottom.

7. The water pump casing assembly according to claim 6, characterized in that, A ring-shaped positioning seat (3d) is formed on the lower outer wall of the cover-shaped body (3b), and the positioning seat (3d) and the cover-shaped body (3b) are coaxially arranged; the positioning seat (3d) is pressed on the top of the pump casing (1), and the positioning seat (3d) is fixed to the pump casing (1) by a ring of bolts (4).

8. The water pump casing assembly according to claim 1, characterized in that, The inner wall of the pump casing (1) has an annular sealing step (1c) formed at the left side opening of the impeller cavity (1b), and the sealing step (1c) is coaxially arranged with the impeller cavity (1b).

9. The water pump casing assembly according to claim 2, characterized in that, A straight tube is horizontally formed on the upper outer wall of the cover-shaped body (3b). The outer wall of the straight tube is provided with external threads, and the inner hole of the straight tube is the aforementioned water inlet hole (3a).

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