Submersible pump integrated end cover integrated with water inlet section and submersible pump adopting end cover

Abstract

The utility model discloses a submersible pump integrated end cover integrated with a water inlet joint. The submersible pump integrated end cover comprises an end cover body. The end cover body is circular and is further connected with a water inlet joint, and the water inlet joint and the end cover body are integrally formed through injection molding; a concave bearing groove is formed in the axis of the end cover body; a bearing seat insert for mounting a bearing is embedded in the bearing groove; the bearing seat insert and the end cover body are integrated through injection molding to form a rigid end cover; a cable threading opening is formed in the rigid end cover corresponding to the cable gland at the side part of the water inlet joint; a group of convex ribs for mounting and fixing are uniformly arranged on the inner wall of the water inlet joint in the axial direction; mounting holes are formed in the convex ribs in the axial direction. According to the integrated end cover of the submersible pump, the water inlet section is integrated with the end cover body through injection molding, the water inlet section and the end cover body are integrally formed through injection molding, the bearing seat insert is arranged for reinforcement, the corrosion resistance is high, the structural design is reasonable, the strength meets the use requirement, the purpose of light weight is achieved, and assembly errors during part assembly are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible pumps, in particular to an integrated end cover for a submersible pump and a submersible pump using the end cover. Background Art

[0002] A submersible pump refers to a pump in which the pump body impeller and the motor driving the impeller are both submerged in water. In existing submersible pumps, the end cover and the water inlet section are cast from all-metal materials, and the end cover and the water inlet section are usually connected by bolts. The following defects and deficiencies exist in the use process:

[0003] 1) In the prior art, both the end cover and the water inlet section of the submersible pump are castings, and there is a lower limit to the wall thickness of the casting. Coupled with the high density of the metal itself, the weight is relatively large. Now, there is a demand in the market for submersible pumps with a light overall weight. Therefore, each part has a need for weight reduction.

[0004] 2) With the rise of coastal aquaculture, it has become common for submersible pumps to transport seawater. Cast iron has poor performance in resisting seawater corrosion, often causing the pump to be scrapped due to premature corrosion.

[0005] 3) The end cover and the water inlet section are two independent parts and are independently processed and manufactured, resulting in assembly errors during the assembly process, affecting the performance and reliability of the submersible pump. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the above technical defects in the background art and provide an end cover for a submersible pump that can reduce weight, reduce assembly errors, and ensure corrosion resistance, as well as a submersible pump using the end cover.

[0007] For the end cover, the technical solution provided by the utility model is as follows:

[0008] An integrated end cover of a submersible pump integrating a water inlet section, including an end cover body; the end cover body is circular and a water inlet section is further connected and provided on the end cover body. The water inlet section and the end cover body are integrally formed by injection molding; an inner concave bearing seat installation groove is provided at the axis of the end cover body; a bearing seat insert for installing a bearing is embedded in the bearing seat installation groove; the bearing seat insert and the end cover body are formed into one body by injection molding to form a rigid end cover; a circular stop is provided in the bearing seat installation groove along its circumferential direction. Correspondingly, a circular limiting structure matching the circular stop is provided on the outer peripheral surface of the bearing seat insert; a cable gland is provided on the side of the water inlet section. Correspondingly, a cable through hole is provided on the rigid end cover; a group of convex ribs for installation and fixation are uniformly provided on the inner wall of the water inlet section along the axial direction. Installation holes are provided on the convex ribs along the axial direction, and the installation holes penetrate through the end cover body.

[0009] Compared with the prior art, the water inlet section integrated in the integrated end cover of the submersible pump of the present utility model is integrally formed by injection molding with the end cover body, and the plastic is strengthened by setting a bearing seat insert, with strong corrosion resistance. At the same time, the structure is reasonably designed, the strength meets the use requirements, and the purpose of light weight is achieved. Moreover, the injection-molded integrated structure avoids the assembly error during part assembly. In addition, the present utility model reduces the use of cast iron parts, thereby reducing the waste gas, dust, and waste residue in the casting process.

[0010] As an improvement, in the integrated end cover of the submersible pump integrated with the water inlet section, the side surface of the water inlet section is formed into a grid structure by rib strips arranged in groups along the horizontal and vertical directions. This structure is easy to injection mold, with high strength while being lightweight.

[0011] As an improvement, in the integrated end cover of the submersible pump integrated with the water inlet section, a gland groove for installing a cable gland is provided on the side of the water inlet section, and the cable gland is fixedly connected to the gland groove by screws. Thus, the disassembly and assembly of the cable gland are very convenient, and it is easy to manufacture, which is beneficial to cost control.

[0012] As an improvement, in the integrated end cover of the submersible pump integrated with the water inlet section, the end cover body and the water inlet section are made of the same material, which is reinforced nylon PA66. The reinforced nylon PA66 material is easily available, which is beneficial to cost control.

[0013] As an improvement, in the integrated end cover of the submersible pump integrated with the water inlet section, the bearing seat insert can be made of cast iron HT200 material.

[0014] As an improvement, in the integrated end cover of the submersible pump integrated with the water inlet section, the annular stop includes an inward concave female stop and an outward convex male stop. Correspondingly, the annular limiting structure includes an annular boss that cooperates with the female stop and an annular groove that cooperates with the male stop. Using both the male stop and the female stop simultaneously is beneficial to improving the bonding strength between the bearing seat insert and the end cover body.

[0015] As an improvement, in the integrated end cover of the submersible pump integrated with the water inlet section, a group of convex heads are provided along the circumferential direction at the upper end of the bearing seat insert. The convex heads play a role in circumferentially limiting the bearing seat insert and improving the bonding strength.

[0016] As an improvement, in the integrated end cover of the submersible pump integrated with the water inlet section, threaded holes for installing a sealing cover are provided on the convex heads. Providing the threaded holes for installing the sealing cover on the convex heads has the characteristic of being easy to implement.

[0017] For the submersible pump, the technical solution of this application is:

[0018] A submersible pump, comprising a motor; an end of the housing of the motor is connected to the above-mentioned integrated submersible pump integral end cover with a water inlet section.

[0019] Compared with the prior art, the submersible pump of the present utility model adopts an integrated submersible pump integral end cover with a water inlet section, which has good strength, corrosion resistance, light weight, low cost, and at the same time avoids assembly errors during the assembly of the water inlet section and the end cover. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram (front view) of the integrated submersible pump integral end cover with a water inlet section of the present utility model.

[0021] Figure 2 It is a schematic structural diagram (three-dimensional view) of the submersible pump integral end cover of the present utility model.

[0022] Figure 3 It is a schematic structural diagram of the cross-sectional view of the submersible pump integral end cover of the present utility model.

[0023] Figure 4 It is Figure 3 The enlarged structural diagram of the part of circle A in

[0024] Figure 5 It is the top view of the submersible pump integral end cover of the present utility model.

[0025] Figure 6 It is a schematic structural diagram of the bearing seat insert of the submersible pump integral end cover of the present utility model.

[0026] Figure 7 It is a schematic partial structural diagram of the submersible pump of the present utility model.

[0027] Markings in the drawings: 1. End cover body; 2. Water inlet section; 201. Rib; 3. Bearing seat installation groove; 4. Stopper; 401. Female stopper; 402. Male stopper; 5. Cable gland; 6. Bearing seat insert; 601. Convex head; 7. Cable; 8. Gland groove; 9. Cable threading port; 10. Annular limiting structure; 1001. Annular boss; 1002. Annular groove; 11. Rib; 1101. Installation hole; 12. Sealing cover; 13. Housing; 14. Sealing sleeve. Detailed Embodiments

[0028] The following further describes the detailed embodiments of the present utility model with reference to the drawings. The same components are denoted by the same reference numerals.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] In order to make the content of this utility model easier to be clearly understood, the following will clearly and completely describe the technical solutions in the embodiments of this utility model with reference to the accompanying drawings in the embodiments of this utility model.

[0031] Embodiment (see Figure 1-7 ):

[0032] In the embodiment, the integrated submersible pump one-piece end cover with a water inlet section includes an end cover body 1; the end cover body 1 is circular and a water inlet section 2 is further connected to the end cover body 1, and the water inlet section 2 and the end cover body 1 are integrally formed by injection molding; a concave bearing seat installation groove 3 is provided at the axis of the end cover body 1; a bearing seat insert 6 for installing a bearing is embedded in the bearing seat installation groove 3; the bearing seat insert 6 and the end cover body 1 are integrally formed by injection molding to form a rigid end cover; an annular stop 4 is provided in the bearing seat installation groove 3 along its circumferential direction, and correspondingly, an annular limiting structure 10 is provided on the outer peripheral surface of the bearing seat insert 6 that cooperates with the annular stop 4; a cable gland 5 is provided on the side of the water inlet section 2, and correspondingly, a cable through hole 9 is provided on the rigid end cover; a group of convex ribs 11 for installation and fixation are uniformly provided on the inner wall of the water inlet section 2 along the axial direction, and mounting holes 1101 are provided on the convex ribs 11 along the axial direction, and the mounting holes 1101 penetrate through the end cover body 1. When in use, the integrated submersible pump end cover is fixedly connected to the housing 13 of the submersible pump motor by long bolts passing through the mounting holes 1101. The power supply cable is led out through the cable through hole 9 and the cable gland 5, and the motor bearing is installed in the bearing seat insert 6.

[0033] In the embodiment, the side of the water inlet section 2 is formed with a grid structure by ribs 201 arranged in groups along the horizontal and vertical directions. The grid structure can prevent floating objects, garbage, etc. in the water from entering the pump head, playing a protective role, and the grid formed by injection molding has guaranteed bonding strength and a long service life.

[0034] In the embodiment, a gland groove 8 for installing the cable gland 5 is provided on the side of the water inlet section 2, and the cable gland 5 is fixedly connected to the gland groove 8 by screws.

[0035] In the embodiment, the end cover body 1 and the water inlet section 2 are made of the same material, which is reinforced nylon PA66. The bearing seat insert 6 is made of cast iron HT200 material.

[0036] In the embodiment, the annular rabbet 4 includes a concave female rabbet 401 and a convex male rabbet 402. Correspondingly, the annular limiting structure 10 includes an annular boss 1001 that cooperates with the female rabbet 401 and an annular groove 1002 that cooperates with the male rabbet 402. The female rabbet 401 cooperates with the annular boss 1001, and the male rabbet 402 cooperates with the annular groove 1002, resulting in a relatively high bonding strength.

[0037] In the embodiment, a set of convex heads 601 are provided along the circumference at the upper end of the bearing seat insert 6. The provision of the convex heads 601 can improve the bonding strength between the bearing seat insert 6 and the end cover body 1. Threaded holes for installing the sealing cover 12 are provided on the convex heads 601. The submersible pump needs to isolate the motor and the pump head with the sealing cover 12, and providing threaded holes for installing the sealing cover 12 on the convex heads 601 has the characteristics of being easy to implement.

[0038] In the embodiment, the submersible pump includes a motor; an end of the housing 13 of the motor is connected to a submersible pump integrated end cover integrating an inlet section. Refer to the attached Figure 5 , a sealing cover 12 is provided on the outer side of the bearing seat insert 6, and the cable 7 passes out through the cable threading opening 9 and is sealed by a sealing sleeve 14. Thus, during use, only the plastic of the entire submersible pump integrated end cover is in contact with seawater, having good corrosion resistance and a long service life.

[0039] The submersible pump integrated end cover of the present utility model is relatively light in weight. The density of reinforced nylon PA66 is only about 18% of that of cast iron HT200. In this way, the weight of the integrated end cover of the present utility model is reduced by about 50% compared to the previous cast iron end cover plus the cast iron inlet section. The use of the submersible pump integrated end cover of the present utility model can reduce the weight of the submersible pump, making it more portable and convenient to use.

[0040] The above describes the present utility model and its embodiments. Such a description is not restrictive. What is shown in the drawings is only one of the embodiments of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the creative concept of the present utility model, design similar structural forms and embodiments to this technical solution without creative efforts, they shall all fall within the protection scope of the present utility model.

Claims

1. The integrated end cover of the submersible pump with integrated water inlet section is characterized by: It comprises an end cover body (1); the end cover body (1) is circular and a water inlet joint (2) is connected to the end cover body (1); the water inlet joint (2) and the end cover body (1) are integrally formed by injection molding; The end cover body (1) is provided with an inwardly concave bearing seat installation groove (3) at the axis center; a bearing seat insert (6) for installing a bearing is embedded in the bearing seat installation groove (3); the bearing seat insert (6) and the end cover body (1) are formed into one piece by injection molding to form a rigid end cover; the bearing seat installation groove (3) is provided with an annular stopper (4) distributed along its circumferential direction, and correspondingly, an annular limiting structure (10) cooperating with the annular stopper (4) is provided on the outer circumferential surface of the bearing seat insert (6); The side cable gland (5) of the water inlet node (2) corresponds to a cable threading port (9) provided on the rigid end cover; The inner wall of the water inlet joint (2) is evenly provided with a group of convex ribs (11) for installation and fixing along the axial direction, and the convex ribs (11) are provided with installation holes (1101) along the axial direction, and the installation holes (1101) penetrate the end cover body (1).

2. The integrated end cover of a submersible pump with an integrated water inlet node according to claim 1, characterized in that: The side surface of the water inlet joint (2) is formed into a grid structure by ribs (201) arranged in groups along the transverse direction and the longitudinal direction.

3. The integrated end cover of a submersible pump with an integrated water inlet node according to claim 1, characterized in that: The side of the water inlet node (2) is provided with a gland groove (8) for installing a cable gland (5), and the cable gland (5) is fixedly connected to the gland groove (8) by screws.

4. The integrated end cover of a submersible pump with an integrated water inlet node according to claim 1, characterized in that: The end cover body (1) and the water inlet joint (2) are made of the same material, which is reinforced nylon PA66.

5. The integrated end cover of a submersible pump with an integrated water inlet node according to claim 1, characterized in that: The bearing seat insert (6) is made of cast iron HT200.

6. The integrated end cover of a submersible pump with an integrated water inlet node according to claim 5, characterized in that: The annular stop (4) includes an inwardly concave female stop (401) and an outwardly convex male stop (402), and correspondingly, the annular limiting structure (10) includes an annular boss (1001) cooperating with the female stop (401) and an annular groove (1002) cooperating with the male stop (402).

7. The integrated end cover of a submersible pump with an integrated water inlet node according to claim 1, characterized in that: The upper end of the bearing seat insert (6) is provided with a group of protrusions (601) along the circumferential direction.

8. The integrated end cover of a submersible pump with an integrated water inlet node according to claim 7, characterized in that: The protrusion (601) is provided with a threaded hole for mounting the sealing cover (12).

9. A submersible pump, comprising a motor; characterized in that: The end of the housing (13) of the motor is connected to an integrated end cover of a submersible pump with an integrated water inlet node as described in any one of claims 1 to 8.

Images