Water replenishing assembly of deep-well pump motor

Abstract

The utility model provides a water replenishing assembly of a deep-well pump motor, and belongs to the technical field of water pumps. The problem that an existing water supplementing device is inconvenient to maintain is solved. In the deep-well pump motor water replenishing assembly, a motor comprises a front end cover and a water replenishing hole axially penetrating through the front end cover, and a water inlet cylinder, a valve plate and a spring are sequentially arranged in the water replenishing hole from front to back; the water inlet cylinder is detachably fixed in the front end of the water inlet cylinder; the outer wall of the water inlet cylinder and the inner wall of the water replenishing hole are sealed; the valve plate is matched with the water replenishing hole in shape and size, the valve plate can axially slide along the water replenishing hole, a sealing gasket is fixed to the middle of the front side of the valve plate, a circle of notch axially penetrates through the edge of the valve plate, and a water passing channel is formed between the notch and the inner wall of the water replenishing hole; the spring is used for pushing the valve plate to move forwards so that the sealing gasket can press the water inlet cylinder to seal the rear port of the water inlet cylinder. The water replenishing assembly of the deep-well pump motor is convenient to maintain.

Description

Technical Field

[0001] This utility model belongs to the field of water pump technology, and relates to a deep well pump motor, particularly a deep well pump motor water supply component. Background Technology

[0002] The motor of a deep well pump is the core power component of a deep well pump. It is usually designed as an integral part of the pump and works underwater for extended periods. It is suitable for extracting water from sources such as deep wells, lakes, and rivers.

[0003] To meet the needs of motor bearing lubrication and sufficient rotor heat dissipation, some existing deep well pump motors are equipped with a structure that injects coolant into the motor. One such structure is an automatic water replenishment device for a shielded motor (application number: 201020263715.3) disclosed in the Chinese Patent Database. This device includes a water replenishment channel running through the upper bearing housing of the motor, and a one-way valve and a honeycomb filter fixed together within the water replenishment channel. The one-way valve is located closer to the inner side of the upper bearing housing, and the honeycomb filter is located closer to the outer side of the upper bearing housing. The one-way valve includes a one-way valve sleeve and a one-way valve spring seat. The system includes a one-way valve spring and a one-way valve core. The one-way valve sleeve is a sleeve with a small water passage hole at the upper end and a valve core hole communicating with the small water passage hole at the lower end. The one-way valve spring seat is a frustoconical cylinder with a vertically extended flange at the top. The one-way valve core is a bowl-shaped body with a spring fixing post at the bottom. The one-way valve core is placed inside the valve core hole to block the small water passage hole. One end of the one-way valve spring is sleeved on the spring fixing post, and the other end is sleeved on the vertically extended flange of the one-way valve spring seat. The one-way valve spring seat is fixed to the outer end of the valve core hole.

[0004] In the aforementioned water replenishment device, the spring and elastic cup are prone to aging and replacement after long-term use. When replacing the water replenishment device, it is necessary to first remove the upper bearing seat and then knock out the entire one-way valve, which is cumbersome and inconvenient to use. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a water supply component for a deep well pump motor that is easy to maintain.

[0006] The objective of this utility model can be achieved through the following technical solution: A deep well pump motor water supply assembly, the motor including a front end cover and a water supply hole axially penetrating the front end cover, characterized in that, from front to back, a water inlet cylinder, a valve plate and a spring are arranged sequentially inside the water supply hole; the water inlet cylinder is detachably fixed inside the front end of the water inlet cylinder, and a seal is formed between the outer wall of the water inlet cylinder and the inner wall of the water supply hole; the shape and size of the valve plate are matched with the water supply hole, the valve plate can slide along the axial direction of the water supply hole, a sealing gasket is fixed in the middle of the front side of the valve plate, and a notch is axially penetrating along the edge of the valve plate, and a water passage is formed between the notch and the inner wall of the water supply hole; the spring is used to push the valve plate forward so that the sealing gasket presses on the water inlet cylinder to seal the rear port of the water inlet cylinder.

[0007] When in use, if the motor is short of water, the external pressure of the motor is greater than the internal pressure of the motor, causing the valve plate to overcome the spring force and move backward to open the rear port of the water inlet cylinder. Water flows into the motor through the water inlet cylinder, the water passage, and finally through the rear port of the water replenishment hole, thus achieving the purpose of replenishing water.

[0008] The water inlet cylinder, valve plate, and spring are arranged sequentially along the axial direction in the water inlet hole, and the water inlet cylinder can be detachably fixed inside the front end of the water inlet hole. This way, only the water inlet cylinder needs to be removed before the valve plate and spring can be taken out in sequence. The entire process does not require removing the front end cover, which effectively omits the disassembly and assembly steps during maintenance and has the advantages of convenient and easy maintenance.

[0009] In the aforementioned deep well pump motor water supply assembly, the water inlet cylinder is fixed in the water supply hole by means of threads, so as to facilitate the disassembly and assembly of the water inlet cylinder and further facilitate maintenance.

[0010] In the aforementioned deep well pump motor water supply assembly, the inner hole at the front end of the water inlet cylinder is a polygonal hole, which further facilitates the disassembly and assembly of the water inlet cylinder.

[0011] In the aforementioned deep well pump motor water supply assembly, a copper sintered filter element is embedded inside the water inlet cylinder, and the copper sintered filter element is located behind the polygonal holes to filter impurities in the water entering the motor.

[0012] In the aforementioned deep well pump motor water supply assembly, an annular limiting seat is formed on the inner wall of the front end of the water inlet cylinder, and the inner hole of the limiting seat is the aforementioned polygonal hole. The limiting seat is provided to make the front end of the water inlet cylinder constricted, facilitating the assembly and disassembly of the water inlet cylinder with the aid of tools.

[0013] In the aforementioned deep well pump motor water supply assembly, the front end of the copper sintered filter element is pressed onto the limiting seat. The limiting seat is designed to press the copper sintered filter element into place in one go, facilitating assembly.

[0014] In the aforementioned deep well pump motor water supply assembly, an annular groove is provided on the outer wall of the water inlet cylinder, and an O-ring is provided in the annular groove. The outer circumferential surface of the O-ring presses against the inner wall of the water supply hole to enhance the sealing performance between the water inlet cylinder and the inner wall of the water supply hole.

[0015] In the aforementioned deep well pump motor water supply assembly, a guide post matching the spring is formed on the rear side of the valve plate, and the front end of the spring is sleeved on the guide post to enhance the stability of the spring operation.

[0016] In the aforementioned deep well pump motor water supply assembly, an annular positioning seat is formed on the inner wall of the water supply hole, and the rear end of the spring presses against the positioning seat.

[0017] Compared with existing technologies, this deep well pump motor water supply assembly has the following advantages:

[0018] 1. The water inlet cylinder, valve plate, and spring are arranged sequentially along the axial direction in the water inlet hole, and the water inlet cylinder can be detachably fixed inside the front end of the water inlet hole. In this way, only the water inlet cylinder needs to be removed to remove the valve plate and spring in sequence. The entire process does not require removing the front end cover, which effectively omits the disassembly and assembly steps during maintenance and has the advantages of convenient and easy maintenance.

[0019] 2. A limit seat is provided so that the front end of the water inlet cylinder is constricted, making it easy to assemble and disassemble the water inlet cylinder with tools. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the location of the water supply component for the deep well pump motor.

[0021] Figure 2 This is a schematic diagram of the water supply component for a deep well pump motor.

[0022] Figure 3 This is a schematic diagram of the valve plate.

[0023] In the diagram, 1. Front cover; 1a. Water inlet hole; 1b. Positioning seat; 2. Water inlet cylinder; 2a. Limiting seat; 3. Valve plate; 3a. Notch; 3b. Guide post; 4. Spring; 5. Sealing gasket; 6. Water passage; 7. O-ring; 8. Copper sintered filter element. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] like Figure 1 As shown, in the deep well pump motor water supply assembly, the motor includes a front end cover 1 and a water supply hole 1a that axially penetrates the front end cover 1.

[0027] Specifically

[0028] like Figures 1 to 3 As shown, the water inlet hole 1a contains, from front to back, an inlet cylinder 2, a valve plate 3, and a spring 4. The inlet cylinder 2 is detachably fixed inside its front end, and a seal is formed between the outer wall of the inlet cylinder 2 and the inner wall of the water inlet hole 1a. The shape and size of the valve plate 3 match the water inlet hole 1a, and the valve plate 3 can slide axially along the water inlet hole 1a. A sealing gasket 5 is fixed to the center of the front side of the valve plate 3, and a notch 3a runs axially through the edge of the valve plate 3, forming a water passage 6 between the notch 3a and the inner wall of the water inlet hole 1a. The spring 4 pushes the valve plate 3 forward so that the sealing gasket 5 presses against the inlet cylinder 2 to seal the rear port of the inlet cylinder 2. In the actual product, the sealing gasket 5 presses against the rear end face of the inlet cylinder 2 to seal the rear port of the inlet cylinder 2.

[0029] When in use, when the motor is short of water, the external pressure of the motor is greater than the internal pressure of the motor, so that the valve plate 3 overcomes the elastic force of the spring 4 and moves backward to open the rear port of the water inlet cylinder 2. Water flows into the motor through the water inlet cylinder 2, the water passage 6 and finally through the rear port of the water replenishment hole 1a, thus achieving the purpose of replenishing water.

[0030] The water inlet cylinder 2, valve plate 3, and spring 4 are arranged sequentially along the axial direction in the water supply hole 1a. The water inlet cylinder 2 can be detachably fixed inside the front end of the water supply hole 1a. In this way, only the water inlet cylinder 2 needs to be removed before the valve plate 3 and spring 4 can be taken out in sequence. The entire process does not require removing the front end cover 1, which effectively omits the disassembly and assembly steps during maintenance. It has the advantages of convenient and easy maintenance.

[0031] In this embodiment,

[0032] The sealing gasket 5 is pressed onto the front side of the valve plate 3 and the two are bonded and fixed together.

[0033] The water inlet cylinder 2 is fixed in the water supply hole 1a by threads to facilitate disassembly and assembly, and further simplify maintenance. To elaborate, an annular groove is formed on the outer wall of the water inlet cylinder 2, and an O-ring 7 is installed within the groove. The outer circumferential surface of the O-ring 7 presses against the inner wall of the water supply hole 1a to enhance the sealing performance between the water inlet cylinder 2 and the inner wall of the water supply hole 1a.

[0034] The spring 4 is installed as follows: A ring-shaped positioning seat 1b is formed on the inner wall of the water inlet hole 1a. The positioning seat 1b and the water inlet hole 1a are coaxially arranged, and the rear end of the spring 4 presses against the positioning seat 1b. Further, a guide post 3b matching the spring 4 is formed on the rear side of the valve plate 3. The axes of the guide post 3b and the water inlet hole 1a are parallel, and the front end of the spring 4 is sleeved on the guide post 3b to enhance the operational stability of the spring 4.

[0035] like Figure 2 As shown, the inner hole at the front end of the water inlet cylinder 2 is a polygonal hole, which further facilitates the assembly and disassembly of the water inlet cylinder 2. Preferably, the polygonal hole is a quadrilateral hole. A copper sintered filter element 8 is embedded inside the water inlet cylinder 2, and the copper sintered filter element 8 is located behind the polygonal hole, used to filter impurities in the water entering the motor. The copper sintered filter element 8 is an existing product and will not be described in detail here.

[0036] To further explain, an annular limiting seat 2a is formed on the inner wall of the front end of the water inlet cylinder 2. The limiting seat 2a and the water inlet cylinder 2 are coaxially arranged, and the inner hole of the limiting seat 2a is the aforementioned polygonal hole. The limiting seat 2a is provided so that the front end of the water inlet cylinder 2 is constricted, which facilitates the assembly and disassembly of the water inlet cylinder 2 with the help of tools. The front end of the aforementioned copper sintered filter element 8 is pressed onto the limiting seat 2a. The limiting seat 2a is provided so that the copper sintered filter element 8 can be pressed into place in one go, which is conducive to assembly.

[0037] Example 2

[0038] The structure and principle of this embodiment are basically the same as those of embodiment one. The difference is that the water inlet tube 2 has a water supply hole 1a extending from its front end, and a ring-shaped connecting seat is formed on the outer wall of the front end of the water inlet tube 2. The connecting seat is pressed on the front end cover 1, and the connecting seat is detachably fixed to the front end cover 1 by a ring of screws.

[0039] 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 replenishing assembly for a deep-well pump motor, the motor comprising a front end cover (1) and a water replenishing hole (1a) axially penetrating through the front end cover (1), characterized in that, The water inlet hole (1a) is sequentially provided with a water inlet cylinder (2), a valve plate (3) and a spring (4) from front to back; the water inlet cylinder (2) is detachably fixed in the front end of the water inlet cylinder (2), and a seal is formed between the outer wall of the water inlet cylinder (2) and the inner wall of the water inlet hole (1a); the shape and size of the valve plate (3) are matched with the water inlet hole (1a), the valve plate (3) can slide axially along the water inlet hole (1a), the front side of the valve plate (3) is fixed with a sealing gasket (5), the edge of the valve plate (3) is axially penetrated by a ring of notches (3a), and a water passage (6) is formed between the notches (3a) and the inner wall of the water inlet hole (1a); the spring (4) is used to push the valve plate (3) to move forward so that the sealing gasket (5) is pressed on the water inlet cylinder (2) to close the rear end of the water inlet cylinder (2).

2. The deep-well pump motor water replenishing assembly of claim 1, wherein, The water inlet cylinder (2) is fixed in the water inlet hole (1a) by a threaded mode.

3. The deep-well pump motor water replenishing assembly of claim 2, wherein, The front end inner hole of the water inlet cylinder (2) is a polygonal hole.

4. The deep-well pump motor make-up assembly of claim 3, wherein, The copper sintered filter element (8) is embedded in the water inlet cylinder (2), and the copper sintered filter element (8) is located at the rear side of the polygonal hole.

5. The deep-well pump motor make-up assembly of claim 4, wherein, The front end inner wall of the water inlet cylinder (2) is formed with a ring-shaped limiting seat (2a), and the inner hole of the limiting seat (2a) is the polygonal hole.

6. The deep-well pump motor make-up assembly of claim 5, wherein, The front end of the copper sintered filter element (8) is pressed on the limiting seat (2a).

7. The deep-well pump motor make-up assembly of claim 2, wherein, The outer side wall of the water inlet cylinder (2) is provided with an annular groove, and the annular groove is provided with an o-ring (7), and the outer circumferential surface of the o-ring (7) is pressed on the inner side wall of the water inlet hole (1a).

8. The deep-well pump motor make-up assembly of claim 1, wherein, The rear side of the valve plate (3) is formed with a guide column (3b) matched with the spring (4), and the front end of the spring (4) is sleeved on the guide column (3b).

9. The deep-well pump motor make-up assembly of claim 1, wherein, The inner wall of the water inlet hole (1a) is formed with a ring-shaped positioning seat (1b), and the rear end of the spring (4) is pressed on the positioning seat (1b).

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