Submersible electric pump with pressure reduction protection

Abstract

The utility model relates to the technical field of electric pumps, in particular to a submersible electric pump with pressure reduction protection, which comprises a pressure reduction bin, a driving component is arranged at the top end of the pressure reduction bin, a pump body component is arranged at the bottom end of the pressure reduction bin, a plurality of water permeable holes are arranged on the pressure reduction bin, and an adjusting bin is arranged inside the pressure reduction bin. Fixing blocks are symmetrically arranged on the side wall of the inner side of the adjusting bin, the fixing blocks are connected with tension springs, one ends of the tension springs are connected with elastic blocks, the elastic blocks are connected with guide rails, the guide rails are connected with a pressure bearing sleeve, a rotating groove is formed in the side wall of the inner side of the pressure bearing sleeve, and a plurality of balls are arranged in the rotating groove; the problems that the aperture of the pressure reduction bin cannot be adjusted, and the pressure reduction effect of the pressure reduction bin cannot adapt to different working conditions and pressure changes are solved through the structures of the water permeable holes, the adjusting bin, the fixing block, the tension spring, the elastic block, the guide rail, the pressure bearing sleeve, the rotating groove and the balls.

Description

Technical Field

[0001] The utility model relates to the technical field of electric pumps, in particular to a submersible electric pump with decompression protection. Background Technique

[0002] A submersible electric pump combines a motor and a water pump directly into one unit and dives into water together, forming a unique pump with simple operation and compact structure. The submersible electric pump is mainly applicable to transporting sewage or mixed liquids containing insoluble solids such as sediment, and is especially suitable for industrial and mining, construction, and domestic sewage discharge. It can also be used for flood control and pumping general clear water. The submersible electric pump eliminates many management devices and buildings above water, operates with low noise underwater, and is very suitable for places with quiet working environment requirements, such as water supply and drainage in schools, hospitals, hotels, etc.

[0003] Moreover, in the application document with the publication number CN2553146Y, a submersible electric pump with decompression protection is mentioned. This device adds a connection section between the water pump and the motor and drills holes (it can be one hole or multiple holes) on the connection section. The connection section with holes forms a decompression chamber. When the dynamic seal at the pump shaft extension is damaged, the high-pressure water in the pump body is not directly pressed into the motor interior but is pressed into the connection section. Since there are holes on the connection section and these holes are connected to the well water, the high-pressure water pressed into the connection section quickly communicates with the well water and thus becomes normal-pressure water. In this way, the dynamic seal at the motor shaft extension is avoided from the impact of high-pressure water, the service life of the dynamic seal is improved, and water is not allowed to enter the motor cavity. In this way, the motor will not be burned out due to short circuit. However, there are still certain defects that need to be optimized. The specific defects are as follows: The aperture of the decompression chamber cannot be adjusted, and the decompression effect of the decompression chamber cannot adapt to different working conditions and pressure changes.

[0004] Therefore, it is particularly important to design a submersible electric pump with decompression protection to change the above technical defects and improve the overall practicability. Content of the Utility Model

[0005] The purpose of the utility model is to provide a submersible electric pump with decompression protection to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A submersible electric pump with decompression protection, including a decompression chamber. The top end of the decompression chamber is provided with a driving assembly, the bottom end of the decompression chamber is provided with a pump body assembly, the decompression chamber is provided with a plurality of water-permeable holes, the inside of the decompression chamber is provided with an adjustment chamber, the inner side walls of the adjustment chamber are symmetrically provided with fixing blocks, the fixing blocks are connected with tension springs, one end of the tension spring is connected with an elastic block, the elastic block is connected with a guide rail, the guide rail is connected with a pressure-bearing sleeve, and the inner side wall of the pressure-bearing sleeve is provided with a rotating groove, and a plurality of balls are arranged inside the rotating groove.

[0008] As a preferred solution of the present utility model, the decompression chamber is connected to the driving assembly and the pump body assembly through flanges.

[0009] As a preferred solution of the present utility model, the driving assembly includes a motor, a transmission device, and a handle. The motor provides power, and the power is transmitted to the pump body assembly through the transmission device to drive the pump body assembly to perform pumping operations. The pump body assembly includes an impeller and a pump casing. The impeller rotates under the drive of the motor, generates centrifugal force, and discharges the inhaled water from the water outlet of the pump casing. The pump casing is used to fix the impeller, guide the water flow, and increase the water pressure.

[0010] As a preferred solution of the present utility model, the pressure-bearing sleeve is arranged outside the output shaft of the transmission device, and the output shaft of the transmission device is provided with a fixing groove adapted to the balls. Dynamic seals are provided inside both the driving assembly and the pump body assembly.

[0011] As a preferred solution of the present utility model, the top bottom surface of the decompression chamber is provided with a rotating groove, and the adjustment chamber is adapted to the rotating groove.

[0012] As a preferred solution of the present utility model, the water-permeable holes are circular holes and are arranged at equal intervals. The adjustment chamber includes a plurality of circular blocks adapted to the water-permeable holes. The plurality of circular blocks are connected by vertical rods. The decompression chamber and the adjustment chamber are in the shape of an inverted bucket.

[0013] As a preferred solution of the present utility model, the elastic block is in a U shape, and the guide rail is in an inverted T shape. The elastic block is adapted to the guide rail, and friction pads are provided on the elastic block and the guide rail.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. In the present utility model, a submersible electric pump with decompression protection is provided. By using the structure of water permeable holes, adjustment chambers, fixing blocks, tension springs, elastic blocks, guide rails, pressure-bearing sleeves, rotating grooves, and ball bearings, the motor drives the impeller of the pump body to rotate for drainage. When the dynamic seal of the pump shaft is damaged, high-pressure water is pressed into the decompression chamber and decompressed to normal-pressure water through the water permeable holes. An adjustable adjustment chamber is arranged in the decompression chamber, and the decompression effect is adjusted by covering the water permeable holes with circular blocks. The adjustment chamber is fixed by the elastic block and the guide rail. After releasing the elastic block, the adjustment chamber can be rotated to adjust the decompression. After completion, the elastic block is tightened again to maintain stability. The entire device is tightly flange-connected, effectively protecting the motor from the impact of high-pressure water, extending the service life of the dynamic seal, preventing water from entering the motor and causing a short circuit, and solving the problem that the aperture of the decompression chamber cannot be adjusted and the decompression effect of the decompression chamber cannot adapt to different working conditions and pressure changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall planar structure diagram of the present utility model;

[0017] Figure 2 is the specific internal schematic diagram of the decompression chamber of the present utility model;

[0018] Figure 3 is the external schematic diagram of the inverted adjustment chamber and decompression chamber of the present utility model;

[0019] Figure 4 is the partial sectional schematic diagram of the adjustment chamber and decompression chamber of the present utility model.

[0020] In the figure: 1. Decompression chamber; 101. Driving assembly; 102. Pump body assembly; 103. Water permeable holes; 104. Adjustment chamber; 105. Fixing block; 106. Tension spring; 107. Elastic block; 108. Guide rail; 109. Pressure-bearing sleeve; 2. Rotating groove; 201. Ball bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively with reference to the relevant drawings. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0024] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in the specification of this utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0025] For the embodiments, please refer to Figures 1-4 , this utility model provides a technical solution:

[0026] A submersible electric pump with decompression protection, comprising a decompression chamber 1. At the top of the decompression chamber 1, a drive assembly 101 is provided. At the bottom of the decompression chamber 1, a pump body assembly 102 is provided. A number of water-permeable holes 103 are provided on the decompression chamber 1. An adjustment chamber 104 is provided inside the decompression chamber 1. Fixed blocks 105 are symmetrically provided on the inner side wall of the adjustment chamber 104. The fixed blocks 105 are connected to tension springs 106. One end of the tension spring 106 is connected to an elastic block 107. The elastic block 107 is connected to a guide rail 108. The guide rail 108 is connected to a pressure-bearing sleeve 109. A rotating groove 2 is provided on the inner side wall of the pressure-bearing sleeve 109. A number of ball bearings 201 are provided inside the rotating groove 2. The motor drives the impeller in the pump body assembly 102 to rotate through a transmission device, generating a centrifugal force to discharge water from the water outlet of the pump casing. When the dynamic seal at the pump shaft extension is damaged, the high-pressure water in the pump body will not directly press into the interior of the motor, but will be pressed into the decompression chamber 1, where it converges with the water flow through the water-permeable holes 103 to turn the high-pressure water into normal-pressure water. An adjustable adjustment chamber 104 is provided inside the decompression chamber 1. By controlling the covering degree between the circular block on the adjustment chamber 104 and the water-permeable holes 103, the decompression effect of the high-pressure water entering the decompression chamber can be controlled. The position of the adjustment chamber 104 is fixed by the cooperation between the elastic block 107 and the guide rail 108. When it is necessary to adjust the decompression effect, the tension of the elastic block 107 can be released first to separate it from the guide rail 108, and then the adjustment chamber 104 can be rotated by an external force to make the circular block on it cover or expose more water-permeable holes 103, so as to achieve the adjustment of the decompression effect. After the adjustment is completed, the elastic block 107 is pulled again to make it closely cooperate with the guide rail 108, and the position of the adjustment chamber 104 is kept stable through the friction pads between them to ensure the continuous effectiveness of the decompression effect. The whole device ensures the close cooperation between components through flange connection. Through this process, the submersible electric pump can effectively avoid the impact of high-pressure water on the dynamic seal at the pump shaft extension, improve the service life of the dynamic seal, and prevent water from entering the motor cavity, thus ensuring that the motor will not burn out due to short circuit;

[0027] Among them, the decompression chamber 1 is flange-connected to the driving assembly 101 and the pump body assembly 102, and is tightly connected by the flange. The driving assembly 101 includes a motor, a transmission device, and a handle. The motor provides power and transmits the power to the pump body assembly 102 through the transmission device for driving the pump body assembly 102 to perform the pumping operation. The pump body assembly 102 includes an impeller and a pump casing. The impeller rotates under the drive of the motor to generate centrifugal force, and discharges the sucked water from the water outlet of the pump casing. The pump casing is used to fix the impeller, guide the water flow, and increase the water pressure, facilitating the operation of the pump body. The pressure-bearing sleeve 109 is arranged outside the output shaft of the transmission device, and a fixing groove adapted to the ball 201 is provided on the output shaft of the transmission device. Dynamic seals are provided inside both the driving assembly 101 and the pump body assembly 102, which does not hinder the normal operation of the pump body. A rotating groove is provided on the bottom surface of the top end of the decompression chamber 1, and the adjusting chamber 104 is adapted to the rotating groove, facilitating the directional rotation of the adjusting chamber 104. The water-permeable holes 103 are circular holes and are arranged at equal intervals. The adjusting chamber 104 includes a number of circular blocks adapted to the water-permeable holes 103, and the number of circular blocks are connected by vertical rods. The decompression chamber 1 and the adjusting chamber 104 are in the shape of an inverted barrel, and the decompression effect is controlled by covering and adjusting between the circular blocks and the circular hole-shaped water-permeable holes. The elastic block 107 is in a U shape, and the guide rail 108 is in the shape of an inverted T. The elastic block 107 is adapted to the guide rail 108, and friction pads are provided on the elastic block 107 and the guide rail 108. The position of the adjusting chamber 104 is fixed by the cooperation between the elastic block 107 and the guide rail 108.

[0028] The working process of the present utility model: When using this submersible electric pump with decompression protection, first, the motor drives the impeller in the pump body assembly 102 to rotate through the transmission device, generating centrifugal force to discharge water from the water outlet of the pump casing. When the dynamic seal at the pump shaft extension is damaged, the high-pressure water in the pump body is not directly pressed into the interior of the motor, but is pressed into the decompression chamber 1, and converges with the water flow through the water-permeable holes 103, making the high-pressure water become normal-pressure water. An adjustable adjusting chamber 104 is provided inside the decompression chamber 1. By adjusting the covering degree between the circular blocks on the adjusting chamber 104 and the water-permeable holes 103, the decompression effect after the high-pressure water enters the decompression chamber can be controlled. The position of the adjusting chamber 104 is fixed by the cooperation between the elastic block 107 and the guide rail 108. When it is necessary to adjust the decompression effect, the elastic block 107 can be released first, and then the adjusting chamber 104 is rotated by an external force, so that the circular blocks on it cover or expose more water-permeable holes, thereby realizing the adjustment of the decompression effect. After the adjustment is completed, the elastic block 107 is pulled so that the elastic block 107 is adapted to the guide rail 108, and the friction pads between them can keep the position of the adjusting chamber 104 stable, ensuring the continuous effectiveness of the decompression effect. Then, through flange connection, through this process, this submersible electric pump can effectively avoid the impact of high-pressure water on the dynamic seal at the motor shaft extension, improve the service life of the dynamic seal, prevent water from entering the motor cavity, and ensure that the motor will not be burned out due to short circuit.

[0029] The standard parts used in this application document can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Among them, the drive assembly and the pump body assembly are conventional pump body structures in the prior art, which belong to the common general knowledge in this field. Therefore, the principles and specific structures will not be explained in detail in this application document.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A submersible electric pump with decompression protection, comprising a decompression chamber (1), characterized in that: A drive assembly (101) is provided at the top of the pressure reduction chamber (1), a pump body assembly (102) is provided at the bottom of the pressure reduction chamber (1), a plurality of water permeable holes (103) are provided on the pressure reduction chamber (1), an adjustment chamber (104) is provided inside the pressure reduction chamber (1), fixing blocks (105) are symmetrically provided on the inner side wall of the adjustment chamber (104), the fixing blocks (105) are connected to tension springs (106), one end of the tension spring (106) is connected to an elastic block (107), the elastic block (107) is connected to a guide rail (108), the guide rail (108) is connected to a pressure bearing sleeve (109), a rotating groove (2) is provided on the inner side wall of the pressure bearing sleeve (109), and a plurality of balls (201) are provided inside the rotating groove (2).

2. The submersible electric pump with decompression protection according to claim 1, characterized in that: The pressure reduction chamber (1) is connected to the drive assembly (101) and the pump body assembly (102) by flanges.

3. A submersible electric pump with decompression protection according to claim 1, characterized in that: The drive assembly (101) includes a motor, a transmission device, and a handle. The motor provides power, and the power is transmitted to the pump body assembly (102) through the transmission device to drive the pump body assembly (102) to perform pumping operations. The pump body assembly (102) includes an impeller and a pump casing. The impeller rotates under the drive of the motor to generate centrifugal force, and the suction water is discharged from the water outlet of the pump casing. The pump casing is used to fix the impeller, guide the water flow, and increase the water pressure.

4. The submersible electric pump with decompression protection according to claim 3, characterized in that: The pressure bearing sleeve (109) is arranged outside the output shaft of the transmission device, and a fixing groove adapted to the balls (201) is provided on the output shaft of the transmission device. Dynamic seals are provided inside both the drive assembly (101) and the pump body assembly (102).

5. The submersible electric pump with decompression protection according to claim 1, characterized in that: A rotating groove is provided on the bottom surface of the top end of the pressure reduction chamber (1), and the adjustment chamber (104) is adapted to the rotating groove.

6. The submersible electric pump with decompression protection according to claim 1, characterized in that: The water permeable holes (103) are circular holes and are arranged at equal intervals. The adjustment chamber (104) includes a plurality of circular blocks adapted to the water permeable holes (103). The plurality of circular blocks are connected by vertical rods. The pressure reduction chamber (1) and the adjustment chamber (104) are in the shape of an inverted barrel.

7. The submersible motor pump with decompression protection according to claim 1, characterized in that: The elastic block (107) is in a U shape, and the guide rail (108) is in the shape of an inverted T. The elastic block (107) is adapted to the guide rail (108), and friction pads are provided on the elastic block (107) and the guide rail (108).

Images