A water inlet filter connector for a submersible pump

Abstract

The utility model provides a water inlet filter connector for a submersible pump, belonging to the technical field of mechanical equipment. It solves the technical problems of inconvenient installation of the existing water inlet filter connector for submersible pumps. The submersible pump includes a pump assembly and a motor assembly, and a water inlet filter connector is fixedly connected between the pump assembly and the motor assembly. The water inlet filter connector includes an upper flange for fixing with the pump assembly, a connecting rib plate formed by stainless steel stamping, and a lower flange for fixing with the motor assembly. The upper flange and the connecting rib plate and the connecting rib plate and the lower flange are welded and fixed, and the connecting rib plate is provided with a plurality of orderly arranged water inlet filter holes and a plurality of reinforcing ribs. The utility model reduces the cost and makes installation more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical equipment, in particular to a water inlet filter connector of a submersible pump. Background Art

[0002] QY oil-immersed submersible pump is a portable shallow water irrigation and drainage equipment that integrates pump and motor. Its characteristic is that the motor is filled with mechanical oil, which improves the working conditions of the mechanical seal and makes it more difficult for external water to enter the motor. It generally includes a water outlet shell, a pump head, a connector and a motor assembly arranged in sequence from top to bottom. An impeller is installed in the pump head, and a plurality of water inlet holes are opened on the connector. The filter device is arranged on the connector relative to the water inlet holes. The central axis of the motor assembly passes through the connector and is connected to the impeller. The motor drives the impeller to rotate so that water enters from the water inlet device and goes out of the water outlet shell.

[0003] For example, the Chinese patent application number 2022235696263, entitled "An Oil-immersed Submersible Pump", discloses that the water inlet mechanism includes a mounting seat, a protective cover, a water inlet, a filter screen and a first sealing gasket. The outer upper portion of the mounting seat is threadedly connected with a protective cover, and a water inlet is provided in the middle of the surface of the protective cover, and the water inlet is distributed in a ring shape with respect to the protective cover, and a filter screen is provided on the inner surface of the protective cover. In the prior art, a filter screen is basically provided in the water inlet mechanism to filter water. This structure increases the cost of components and also adds several assembly steps, which affects the overall efficiency of product assembly production. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a water inlet filter connector for a submersible pump. The technical problem to be solved by the utility model is: how to reduce the number of parts to reduce costs while making the water inlet filter connector not only connect other parts but also play the role of water inlet and filtration, facilitate installation, and improve assembly efficiency.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a water inlet filter connector for a submersible pump, the submersible pump includes a pump assembly and a motor assembly, a water inlet filter connector is fixedly connected between the pump assembly and the motor assembly, the water inlet filter connector includes an upper flange for fixing to the pump assembly, a connecting rib plate formed by stamping of stainless steel and a lower flange for fixing to the motor assembly, the upper flange and the connecting rib plate and the connecting rib plate and the lower flange are welded and fixed, and the connecting rib plate is provided with circumferentially evenly distributed water inlet filter holes and a plurality of reinforcing ribs.

[0006] The submersible pump includes a pump assembly and a motor assembly. The pump assembly includes a pump housing, and the pump housing is equipped with a guide vane for guiding flow, an impeller and an impeller cover plate for sucking in liquid and conveying it under pressure; the motor assembly is used to drive the impeller to rotate. The motor assembly can refer to the permanent magnet synchronous motor. The motor assembly includes a motor cover and a rotor shaft. The upper end of the rotor shaft extends out of the motor cover and is fixed to the impeller. The water inlet filter connector of this scheme adopts a stainless steel stamped connecting rib plate. The upper flange and the lower flange are welded at the upper and lower ends of the connecting rib plate. The overall shape and size are stable, the parts have good rigidity, and the strength is guaranteed. There is sufficient strength and high dimensional accuracy to connect the pump assembly and the motor assembly; the water inlet filter holes arranged in an orderly manner on the connecting rib plate have certain requirements for the aperture size to ensure the filtering effect. It has a water inlet filtering effect. The holes can be accurately taken by laser cutting, which will not cause the deformation of the connecting rib plate. The size is stable, and there are certain reinforcing ribs on the connecting rib plate to ensure the strength of the connecting rib plate. The water inlet filter connector of this solution is integrated, taking into account the functions of water inlet, filtering and connection, and also eliminating the original separate water inlet filter component, which is convenient for production and assembly, reduces costs, and is also convenient for users to use and maintain.

[0007] Furthermore, the connecting rib is stamped into a flared shape by a stainless steel tube, the upper part of the connecting rib is a flared part and the lower part is a constricted part, and the flared part and the constricted part are connected by a straight transition. The flared part and the constricted part are connected in a straight line, inclined and smooth manner, and the flared part and the constricted part of the connecting rib form a truncated cone shape, which is convenient for subsequent process processing and has good stability because of the truncated cone structure. The upper part of the connecting rib is a flared part opposite to the impeller cover plate, which increases the amount of water flowing from the connecting rib to the impeller; the constricted part at the lower part of the connecting rib disperses the force on the motor assembly, enhancing stability. The truncated cone structure has good space utilization, which not only connects the pump assembly and the motor assembly but also saves space.

[0008] Furthermore, the water inlet filter hole includes a plurality of triangular combination holes and a plurality of quadrilateral combination holes arranged in an orderly manner, the corner tips of every two groups of triangular combination holes are evenly distributed on the connecting rib plate relative to the circumference, and there is a group of quadrilateral combination holes in the middle of every four groups of triangular combination holes, and the connection between the quadrilateral combination holes and the triangular combination holes is a reinforcing rib. The quadrilateral combination hole is arranged in the middle as the main water inlet, and the triangular combination holes are distributed at the upper and lower ends of the quadrilateral combination hole, making good use of the space to cut more holes, increasing the water inlet while ensuring the overall rigidity and strength.

[0009] Furthermore, the water inlet filter hole is formed by laser cutting, the water inlet filter hole in the triangular combination hole is a circular hole, and the water inlet filter hole in the quadrilateral combination hole is a strip hole, and the area of ​​the circular hole is smaller than the area of ​​the strip hole. In order to ensure the simultaneous effects of filtering and water inlet, there are certain requirements for the aperture size of the water inlet filter hole. Through laser cutting, the hole can be accurately selected, the size is guaranteed, and the connection rib plate will not be deformed.

[0010] Furthermore, the connecting rib plate is extended upward to form a large cylindrical mounting portion, the upper flange is a large circular ring plate formed by laser cutting of stainless steel sheet, the large cylindrical mounting portion is welded and fixed to the large circular ring plate, and the large circular ring plate is laser cut to form a plurality of fixed through holes evenly distributed around the circumference. The upper flange is a large circular ring plate formed by laser cutting of stainless steel sheet, and fastener through holes are laser cut at the same time. Laser cutting can make the size more accurate, and welding can make the connecting rib plate and the upper flange more firmly connected.

[0011] Furthermore, the outer circumferential surface of the large circular plate is provided with threads, the inner circumferential surface of the large cylinder mounting portion is provided with threads, and the large circular plate extends into the large cylinder mounting portion and is fixedly engaged with the threads of the large cylinder mounting portion. In this solution, threads are machined on the outer circumferential surface of the large circular plate, threads are machined on the inner circumferential surface of the large cylinder mounting portion, and the large circular plate is fixedly engaged with the threads of the large cylinder mounting portion and then laser welded, so that the upper flange and the connecting rib plate are more firmly connected.

[0012] Furthermore, the pump assembly includes a pump housing and an impeller cover plate installed in the pump housing, the inner circumference of the large circular plate is provided with a step portion, the upper end face of the large circular plate is against the lower end face of the pump housing, the lower part of the impeller cover plate protrudes outward with a mounting boss, the mounting boss is embedded in the step portion, and the large circular plate is fixed to the lower part of the pump housing through a fixing through hole 1 and a fixing member 1. The water inlet filter connector takes into account the functions of water inlet filtration, connecting the pump assembly and the motor assembly, and fixing and installing the impeller cover plate, which facilitates production and assembly, improves assembly efficiency, and also facilitates user use and maintenance, and the overall appearance of the product is more concise and beautiful.

[0013] Furthermore, the connecting rib plate extends downward to form a small cylindrical mounting portion, the lower flange is formed by stamping of stainless steel sheet material, the lower flange has a coaxial outer peripheral side wall and an inner peripheral side wall, the upper ends of the outer peripheral side wall and the inner peripheral side wall are connected by a flat top wall, a plurality of fixed through holes 2 evenly distributed around the circumference are stamped on the flat top wall, and the inner peripheral surface of the small cylindrical mounting portion is welded and fixed to the outer peripheral surface of the outer peripheral side wall. The lower flange is a cover plate stamped of stainless steel sheet material, and the fastener through hole 2 is stamped and formed at the same time, which reduces machining and other process processes, and can also ensure the dimensional accuracy and overall strength.

[0014] Furthermore, the motor assembly includes a motor cover, the outer peripheral side wall and the inner peripheral side wall are against the motor cover, and the lower flange is fixed to the upper part of the motor cover through the second fixing through hole through the second fixing piece. The water inlet filter connector takes into account the functions of water inlet filtration, connecting the pump assembly and the motor assembly, and fixing and installing the motor cover, which is convenient for production and assembly, improves assembly efficiency, and is also convenient for users to use and maintain, and the overall appearance of the product is more concise and beautiful.

[0015] Furthermore, the connecting ribs are stamped from stainless steel tubes into a cylindrical shape. The cylindrical shape is suitable for the case where the pump assembly and the motor assembly have similar dimensions. The cylindrical connecting ribs are convenient for production and processing, improve assembly efficiency, and are also convenient for users to use and maintain.

[0016] Compared with the prior art, the technical effects of the utility model are:

[0017] 1. The water inlet filter connector consists of three parts: the upper flange, the connecting rib plate and the lower flange. The upper flange is a large circular ring plate formed by laser cutting of stainless steel sheet, and the fastener through hole 1 is laser cut to ensure the dimensional accuracy and overall strength; the lower flange is a cover plate stamped and formed by stainless steel sheet, and the fastener through hole 2 is stamped and formed at the same time, which reduces the machining process and other processes, and can also ensure the dimensional accuracy and overall strength; the connecting rib plate in the water inlet filter connector is stamped and expanded by stainless steel pipe material, with stable overall dimensions, good rigidity of parts and guaranteed strength; the upper part of the connecting rib plate is a truncated cone with an expanded part and a contracted part at the lower part. The truncated cone structure has good stability, increases the water inlet space in the connecting rib plate, and provides convenience for subsequent process processing.

[0018] 2. The water inlet filter connector takes into account the functions of water inlet filtration, connecting the pump assembly and the motor assembly, fixing the impeller cover and fixing the motor cover, which facilitates production and assembly, improves assembly efficiency, and also facilitates user use and maintenance.

[0019] 3. The water inlet filter hole is formed by laser cutting on the connecting rib plate. The size is guaranteed and the connecting rib plate will not be deformed. The original separate water inlet filter component is eliminated, reducing parts and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a cross-sectional view Figure 1 .

[0021] Figure 2 The utility model is a cross-sectional view Figure 2 .

[0022] Figure 3 The utility model is a three-dimensional Figure 1 .

[0023] Figure 4 The utility model is a three-dimensional Figure 2 .

[0024] Figure 5 It is a stereoscopic diagram of the water inlet filter connector and the motor cover of the utility model.

[0025] Figure number marking: 1, pump housing; 2, impeller cover; 201, mounting boss; 3, motor cover; 301, wire plug;

[0026] 4. Water inlet filter connector; 41. Upper flange; 41-1. Large circular ring plate; 41-2. Fixed through hole 1; 41-3. Step portion;

[0027] 42, connecting rib plate; 42-1, large cylinder mounting part; 42-2, small cylinder mounting part; 42-3, water inlet filter hole; 42-3a, triangular combination hole; 42-3b, quadrilateral combination hole; 42-4, reinforcing ribs;

[0028] 43, lower flange; 43-1, outer peripheral side wall; 43-2, inner peripheral side wall; 43-3, flat top wall; 43-4, second fixing through hole;

[0029] 44. Arc groove;

[0030] 5. Fixing part 1; 6. Fixing part 2. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0032] according to Figures 1 to 5 As shown: a water inlet filter connector 4 of a submersible pump, the submersible pump includes a pump assembly and a motor assembly, the pump assembly includes a pump housing 1, the pump housing 1 is equipped with a guide vane for guiding flow, an impeller and an impeller cover plate 3 for sucking liquid and conveying it under pressure; the motor assembly is used to drive the impeller to rotate, the motor assembly can refer to a permanent magnet synchronous motor, and the motor assembly includes a motor cover 3. A water inlet filter connector 4 is fixedly connected between the pump assembly and the motor assembly. The water inlet filter connector 4 includes an upper flange 41 for fixing to the pump assembly, a connecting rib plate 42 formed by stamping and expanding of stainless steel pipe material, and a lower flange 43 for fixing to the motor assembly. The upper flange 41 and the connecting rib plate 42, as well as the connecting rib plate 42 and the lower flange 43 are welded and fixed.

[0033] The connecting rib plate is stamped into a flared shape by a stainless steel tube. The upper part of the connecting rib plate 42 is a flared part and the lower part is a constricted part. The flared part and the constricted part are connected in a straight line to form a truncated cone. The connecting rib plate 42 is provided with water inlet filter holes 42-3 and reinforcing ribs 42-4 evenly distributed around the circumference. The connecting rib plate 42 and the lower flange 43 are provided with an integral arc groove 44, and the motor cover 3 is provided with a wire plug 301 opposite to the arc groove 44.

[0034] The water inlet filter connector 4 is fixedly connected between the pump housing 1 and the motor cover 3, so the water inlet filter connector 4 not only connects the pump assembly and the motor assembly but also takes into account the function of water inlet filtration, and also cancels the original separate water inlet filter component, which is convenient for production and assembly, reduces costs, and is also convenient for users to use and maintain. The connecting rib plate 42 in the water inlet filter connector 4 is formed by stamping and expanding of stainless steel pipe material, and the overall shape and size are stable, the parts have good rigidity, and the strength is guaranteed; the upper part of the connecting rib plate 42 is a flared part and the lower part is a truncated part. The truncated structure has good stability, which increases the water inlet amount in the connecting rib plate 42. The upper part of the connecting rib plate 42 is a flared part opposite to the impeller cover plate 2, which increases the water inlet amount flowing from the connecting rib plate 42 to the impeller; the shrinking part at the lower part of the connecting rib plate 42 disperses the force on the motor cover 3, which enhances stability. The truncated structure has good space utilization, which not only connects the pump housing 1 and the motor cover 3 but also saves space. The water inlet filter holes 42-3 uniformly distributed on the circumference of the connecting rib plate 42 are precisely cut by laser cutting, which will not cause deformation of the connecting rib plate 42 and has stable dimensions. The water inlet filter holes 42-3 can be a single geometric shape hole arranged in an orderly manner or a group of holes composed of multiple geometric shapes arranged in an orderly manner.

[0035] Here is one embodiment of the arrangement of the water inlet filter holes 42-3, the water inlet filter holes 42-3 include a plurality of triangular combination holes 42-3a and a plurality of quadrilateral combination holes 42-3b arranged in order, the corner tips of each two groups of triangular combination holes 42-3a are evenly distributed on the connecting rib plate 42 relative to the circumference, there is a group of quadrilateral combination holes 42-3b in the middle of each four groups of triangular combination holes 42-3a, and the connection between the quadrilateral combination holes 42-3b and the triangular combination holes 42-3a is a reinforcing rib 42-4. The water inlet filter holes 42-3 are formed by laser cutting, preferably the water inlet filter holes in the triangular combination holes 42-3a are circular holes, and preferably the water inlet filter holes in the quadrilateral combination holes 42-3b are strip holes, and the area of ​​the circular holes is smaller than the area of ​​the strip holes. The quadrilateral combination hole 42-3b is set in the middle, and the triangular combination holes 42-3a are distributed at the upper and lower ends of the quadrilateral combination hole 42-3b. By making good use of the space to dig more holes, it can play a filtering role, increase the water intake and ensure the overall rigidity and strength.

[0036] The flared portion on the connecting rib plate 42 extends upward to form a large cylindrical mounting portion 42-1. The upper flange 41 is a large circular plate 41-1 formed by laser cutting of stainless steel sheet material. The large cylindrical mounting portion 42-1 is welded and fixed to the large circular plate 41-1. The large circular plate 41-1 is laser cut to form a number of fixed through holes 41-2 evenly distributed around the circumference. The outer circumference of the large circular plate 41-1 is provided with threads, and the inner circumference of the large cylindrical mounting portion 42-1 is provided with threads. The large circular plate 41-1 and the large cylindrical mounting portion 42-1 are threadedly engaged and fixed, and then laser welded and fixed, so that the upper flange and the connecting rib plate are more firmly connected.

[0037] The inner circumference of the large circular plate 41-1 is provided with a step portion 41-3, the upper end surface of the large circular plate 41-1 is against the lower end surface of the pump housing 1, and the lower part of the impeller cover plate 2 protrudes outward with a mounting boss 201, which is embedded in the step portion, and the fixing member 5 passes through the mounting hole on the pump housing 1 and the through hole 41-2 on the large circular plate 41-1 to fix the pump housing 1 and the large circular plate 41-1. The water inlet filter connector 4 takes into account the functions of water inlet filtration, fixing the pump housing 1 and the motor cover 3, and fixing the impeller cover plate 2, which is convenient for production and assembly, improves assembly efficiency, and is also convenient for users to use and maintain, and the overall appearance of the product is more concise and beautiful.

[0038] The constricted portion on the connecting rib plate 42 extends downward to form a small cylindrical mounting portion 42-2. The lower flange 43 is formed by stamping of stainless steel sheet material. The lower flange 43 has a coaxial outer peripheral side wall 43-1 and an inner peripheral side wall 43-2. ​​The upper ends of the outer peripheral side wall 43-1 and the inner peripheral side wall 43-2 are connected by a flat top wall 43-3. The flat top wall 43-3 is stamped with a plurality of fixed through holes 43-4 evenly distributed around the circumference. The inner peripheral surface of the small cylindrical mounting portion 42-2 is welded and fixed to the outer peripheral surface of the outer peripheral side wall 43-1. The lower flange 43 is a cover plate stamped of stainless steel sheet material, and the fastener through hole 2 is stamped and formed at the same time, which reduces the machining process and can also ensure the dimensional accuracy and overall strength.

[0039] The outer peripheral side wall 43-1 and the inner peripheral side wall 43-2 are against the motor cover 3, and the lower flange 43 is fixed to the upper part of the motor cover 3 through the second fixing through hole 43-4 through the second fixing member 6. The water inlet filter connector 4 takes into account the functions of water inlet filtration, connecting the pump housing 1 and the motor cover 3, and fixing and installing the motor cover 3, which is convenient for production and assembly, improves assembly efficiency, and is also convenient for users to use and maintain, and the overall appearance of the product is more concise and beautiful.

[0040] The connecting rib plate 42 may also be cylindrical. The cylindrical shape is suitable for the case where the pump assembly and the motor assembly have similar external dimensions. The cylindrical connecting rib plate is convenient for production and processing, improves assembly efficiency, and is also convenient for users to use and maintain.

[0041] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope defined by the claims of the present invention.

Claims

1. A water inlet filter connector for a submersible pump, the submersible pump comprising a pump assembly and a motor assembly, characterized in that: A water inlet filter connector (4) is fixedly connected between the pump assembly and the motor assembly, and the water inlet filter connector (4) comprises an upper flange (41) for fixing to the pump assembly, a connecting rib plate (42) formed by stamping of stainless steel, and a lower flange (43) for fixing to the motor assembly, the upper flange (41) and the connecting rib plate (42) as well as the connecting rib plate (42) and the lower flange (43) are fixed by welding, and the connecting rib plate (42) is provided with a plurality of orderly arranged water inlet filter holes (42-3) and a plurality of reinforcing ribs (42-4).

2. The water inlet filter connector of a submersible pump according to claim 1, characterized in that: The connecting rib plate (42) is punched from a stainless steel tube into a flared shape, the upper portion of the connecting rib plate (42) is a flared portion and the lower portion is a contracted portion, and the flared portion and the contracted portion are connected in a straight line transition.

3. The water inlet filter connector of a submersible pump according to claim 2, characterized in that: The water inlet filter holes (42-3) include a plurality of triangular combination holes (42-3a) and a plurality of quadrilateral combination holes (42-3b) arranged in order, the corner tips of every two groups of triangular combination holes (42-3a) are evenly distributed on the connecting rib plate (42) relative to the circumference, there is a group of quadrilateral combination holes (42-3b) in the middle of every four groups of triangular combination holes (42-3a), and the connection between the quadrilateral combination holes (42-3b) and the triangular combination holes (42-3a) is a reinforcing rib (42-4).

4. The water inlet filter connector of a submersible pump according to claim 3, characterized in that: The water inlet filter hole (42-3) is formed by laser cutting, the water inlet filter hole (42-3) in the triangular combination hole (42-3a) is a circular hole, and the water inlet filter hole (42-3) in the quadrilateral combination hole (42-3b) is a strip hole, and the area of ​​the circular hole is smaller than the area of ​​the strip hole.

5. A water inlet filter connector for a submersible pump according to any one of claims 1 to 4, characterized in that: The connecting rib plate (42) extends upward to form a large cylindrical mounting portion (42-1), the upper flange (41) is a large circular ring plate (41-1) formed by laser cutting of stainless steel sheet material, the large cylindrical mounting portion (42-1) is welded and fixed to the large circular ring plate (41-1), and the large circular ring plate (41-1) is laser cut to form a plurality of fixed through holes (41-2) evenly distributed around the circumference.

6. The water inlet filter connector of a submersible pump according to claim 5, characterized in that: The outer circumferential surface of the large annular plate (41-1) is provided with threads, the inner circumferential surface of the large cylindrical mounting portion (42-1) is provided with threads, and the large annular plate (41-1) extends into the large cylindrical mounting portion (42-1) and is threadedly engaged and fixed with the large cylindrical mounting portion (42-1).

7. The water inlet filter connector of a submersible pump according to claim 6, characterized in that: The pump assembly comprises a pump casing (1) and an impeller cover plate (2) installed in the pump casing (1); a step portion (41-3) is provided on the inner circumference of the large circular plate (41-1); the upper end surface of the large circular plate (41-1) abuts against the lower end surface of the pump casing (1); a mounting boss (201) protrudes outward from the lower portion of the impeller cover plate (2); the mounting boss (201) is embedded in the step portion (41-3); the large circular plate (41-1) is fixed to a fixing member (5) provided at the lower portion of the pump casing (1) via a fixing through hole (41-2).

8. A water inlet filter connector for a submersible pump according to any one of claims 1 to 4, characterized in that: The connecting rib plate (42) extends downward to form a small cylindrical mounting portion (42-2), and the lower flange (43) is formed by stamping a stainless steel sheet. The lower flange (43) has a coaxial outer peripheral side wall (43-1) and an inner peripheral side wall (43-2), and the upper ends of the outer peripheral side wall (43-1) and the inner peripheral side wall (43-2) are connected by a flat top wall (43-3). The flat top wall (43-3) is stamped with a plurality of circumferentially evenly distributed fixing through holes (43-4), and the inner peripheral surface of the small cylindrical mounting portion (42-2) is welded and fixed to the outer peripheral surface of the outer peripheral side wall (43-1).

9. The water inlet filter connector of a submersible pump according to claim 8, characterized in that: The motor assembly comprises a motor cover (3), the outer peripheral side wall (43-1) and the inner peripheral side wall (43-2) abut against the motor cover (3), and the lower flange (43) is fixed to the upper part of the motor cover (3) through a second fixing through hole (43-4) through a second fixing member (6).

10. The water inlet filter connector of a submersible pump according to claim 1, characterized in that: The connecting rib plate (42) is punched from a stainless steel tube into a cylindrical shape.

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