Centrifugal pump pressure reducing device

Abstract

The utility model discloses a centrifugal pump pressure reducing device, which belongs to the field of centrifugal pumps and comprises a centrifugal pump body, the back of the centrifugal pump body is fixedly communicated with a pressure relief cylinder, the inner side wall of the pressure relief cylinder is fixedly connected with a pressure relief spring, and the front end of the pressure relief spring is fixedly connected with a pressure relief block. According to the centrifugal pump pressure reducing device, the centrifugal pump machine body, the pressure relief cylinder, the pressure reducing spring and the pressure reducing block are arranged, the pressure resistance and resilience force of the pressure reducing spring are utilized, the pressure reducing block is in sliding connection with the pressure relief cylinder, primary pressure relief can be conveniently conducted on the centrifugal pump machine body, and the motor can be automatically started to work when the pressure of the centrifugal pump machine body exceeds the pressure; and meanwhile, the rotating lead screw can be driven to rotate in the inner ring of the sealing bearing in cooperation with rotation of the motor, in addition, in combination with threaded connection of the rotating lead screw and the pressure relief block and the pressure relief hole, the pressure in the centrifugal pump body can be relieved to the specified pressure, secondary pressure relief is conducted on the centrifugal pump body, the functionality of the equipment is improved, and the situation that the equipment is damaged due to overpressure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pumps, specifically a centrifugal pump pressure reducing device. Background Technology

[0002] A centrifugal pump is a pump that uses the centrifugal force generated by the rotation of an impeller to transport liquids. Centrifugal pumps come in various forms, including vertical, horizontal, single-stage, multi-stage, single-suction, double-suction, and self-priming pumps. Vertical centrifugal pumps are also known as submersible pumps or molten salt submersible pumps.

[0003] Currently, when a centrifugal pump operates, it needs to be depressurized when the water pressure inside the pump exceeds the safe operating limit. Existing depressurization measures are inefficient, failing to reduce pressure promptly. Furthermore, they lack the ability to perform graded depressurization based on the actual pressure conditions. When the pump pressure significantly exceeds the safe operating limit, existing depressurization devices require a prolonged period to restore the pressure to within the safe operating limit, impacting operational efficiency. Therefore, those skilled in the art have developed a centrifugal pump depressurization device to address the problems described in the background section. Utility Model Content

[0004] The purpose of this invention is to provide a centrifugal pump pressure reducing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A centrifugal pump pressure reducing device includes a centrifugal pump body, a pressure relief cylinder fixedly connected to the back of the centrifugal pump body, a pressure reducing spring fixedly connected to the inner wall of the pressure relief cylinder, a pressure reducing block fixedly connected to the front end of the pressure reducing spring, a pressure discharge cylinder fixedly connected to the bottom surface of the pressure relief cylinder, a sealed bearing fixedly embedded in the inner bottom wall of the pressure discharge cylinder, a rotating screw fixedly connected to the inner ring of the sealed bearing, a pressure relief block threadedly connected to the outer surface of the rotating screw, a motor fixedly connected to the bottom surface of the pressure discharge cylinder, the output end of the motor fixedly connected to the bottom end of the rotating screw, a pressure sensing controller fixedly connected to the upper surface of the pressure relief block, and a pressure relief hole formed on the outer surface of the pressure discharge cylinder.

[0007] As a further embodiment of this utility model: a reinforcing block is fixedly connected to the outer surface of the motor, and the upper surface of the reinforcing block is fixedly connected to the bottom surface of the pressure discharge cylinder.

[0008] As a further improvement of this utility model: a limiting pad is fixedly connected to the inner wall of the pressure relief cylinder, and the motor is connected to a power source via a wire.

[0009] As a further scheme of the utility model: the bottom surface of centrifugal pump body is fixedly connected with two L-shaped supporting legs, two mounting holes are arranged on the bottom surface of each L-shaped supporting leg.

[0010] As a further scheme of the utility model: the front surface of centrifugal pump body is fixedly connected with a set display screen, and the outer surface of centrifugal pump body is sprayed with an anti-rust layer.

[0011] As a further scheme of the utility model: the outer surface of centrifugal pump body is fixedly connected with two handles, and the outer surface of each handle is provided with anti-skid lines.

[0012] As a further scheme of the utility model: the upper surface of centrifugal pump body is fixedly connected with a high-pressure prompt lamp, and the outer surface of pressure relief block is slidably connected with the inner wall of pressure relief cylinder.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The centrifugal pump pressure relief device is provided with a centrifugal pump body, a pressure relief cylinder, a pressure relief spring and a pressure relief block, and the pressure relief spring is used for preliminary pressure relief of the centrifugal pump body.

[0015] The centrifugal pump pressure relief device is provided with a pressure relief cylinder, a sealing bearing, a rotating screw rod, a pressure relief block, a motor, a pressure sensing controller and a pressure relief hole, and the pressure sensing controller is used for controlling the motor to work automatically when the centrifugal pump body is over-pressured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structure schematic view of a centrifugal pump body in a centrifugal pump pressure relief device.

[0017] Fig. 2 It is a rear view of a centrifugal pump body in a centrifugal pump pressure relief device.

[0018] Fig. 3 It is a sectional view of a pressure relief cylinder side view in a centrifugal pump pressure relief device.

[0019] Fig. 4 It is a centrifugal pump pressure relief device Fig. 3 The enlarged schematic view of structure A.

[0020] In the figure: 1, centrifugal pump body; 2, pressure relief cylinder; 3, pressure relief spring; 4, pressure relief block; 5, pressure relief cylinder; 6, sealed bearing; 7, rotating screw; 8, pressure relief block; 9, motor; 10, pressure sensing controller; 11, pressure relief hole; 12, reinforcing block; 13, limit pad; 14, L-shaped support leg; 15, handle; 16, high pressure prompt lamp; 17, setting display screen. DETAILED DESCRIPTION

[0021] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Please refer to Figs. 1-4The utility model discloses a centrifugal pump pressure reducing device, including centrifugal pump body 1, the back of centrifugal pump body 1 is fixedly connected with the pressure relief cylinder 2, the inner side wall of pressure relief cylinder 2 is fixedly connected with pressure relief spring 3, the front end of pressure relief spring 3 is fixedly connected with pressure relief block 4, utilizes the pressure resistance and resilience of pressure relief spring 3, cooperation pressure relief block 4 can conveniently carry out the preliminary pressure relief of centrifugal pump body 1, and simultaneously can make it automatic pressure relief, the bottom of pressure relief cylinder 2 is fixedly connected with the pressure relief cylinder 5, the inner bottom wall of pressure relief cylinder 5 is fixedly embedded with sealed bearing 6, the inner ring of sealed bearing 6 is fixedly connected with rotating lead screw 7, and the outer surface of rotating lead screw 7 is threadedly connected with pressure relief block 8, and the bottom of the output end of motor 9 is fixedly connected with rotating lead screw 7, the upper surface of pressure relief block 8 is fixedly connected with pressure sensing controller 10, and the outer surface of pressure relief cylinder 5 is provided with pressure relief hole 11, utilizes the control ability of pressure sensing controller 10, can conveniently start motor 9 work when centrifugal pump body 1 overpressure, simultaneously cooperation motor 9's rotation can drive rotating lead screw 7 rotate in the inner ring of sealed bearing 6, and in addition the threaded connection of rotating lead screw 7 and pressure relief block 8 and pressure relief hole 11, can conveniently pressure relief to the pressure of centrifugal pump body 1 inside specified, carries out secondary pressure relief, improves the functionality of the equipment, avoids the emergence of its overpressure damage.

[0024] The outer surface of motor 9 is fixedly connected with reinforcing block 12, the upper surface of reinforcing block 12 is fixedly connected with the bottom of pressure relief cylinder 5, utilizes reinforcing block 12 to be able to improve the stability of motor 9, avoids the emergence of its shaking, the inner side wall of pressure relief cylinder 2 is fixedly connected with limit pad 13, and motor 9 is connected with power supply through wire, utilizes limit pad 13 to be able to avoid the emergence of the damage of pressure relief spring 3 pressure too big, the bottom of centrifugal pump body 1 is fixedly connected with two L type support legs 14, and two mounting holes are formed in the bottom of each L type support leg 14, utilizes L type support leg 14 and mounting hole, can conveniently support and fix the equipment, improves its stability.

[0025] The front of centrifugal pump body 1 is fixedly connected with setting display screen 17, and the outer surface of centrifugal pump body 1 is sprayed with rustproof layer, utilizes setting display screen 17 to be able to conveniently set the work of electric appliance, and the outer surface of centrifugal pump body 1 is fixedly connected with two handles 15, and anti -skid lines are formed in the outer surface of each handle 15, utilizes handle 15 and anti -skid lines, can conveniently carry the equipment, and reduce its carrying in the probability of hand off, the upper surface of centrifugal pump body 1 is fixedly connected with high pressure prompt light 16, and the outer surface of pressure relief block 4 is slidably connected with the inner wall of pressure relief cylinder 2, utilizes high pressure prompt light 16 to be able to conveniently know that the equipment is in high pressure state, and pay attention to away.

[0026] The working principle of the utility model is: first, the centrifugal pump body 1 is moved to the installation site by the handle 15, and the L-shaped supporting leg 14 is fixed to the ground by the installation hole and the installation screw, and the electrical device is connected to the power supply, then the setting display screen 17 is pressed to set the automatic work of the electrical device, and when the internal pressure of the centrifugal pump body 1 is too large, the pressure relief spring 3 is automatically compressed and the pressure relief block 4 is moved backward, and the high-pressure gas enters the inside of the pressure relief cylinder 5, then when the pressure inside the centrifugal pump body 1 is qualified, the pressure relief spring 3 pushes the pressure relief block 4 to reset, and when the pressure is too large, the pressure sensing controller 10 starts the motor 9 to work, and the rotation of the motor 9 drives the rotating lead screw 7 to drive the pressure relief block 8 to descend, and then the high-pressure gas is discharged through the pressure relief hole 11, and when the pressure is qualified, the pressure relief block 4 is reset first, and the motor 9 drives the pressure relief block 8 to reset, and the above is the whole use process of the device.

[0027] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

[0028] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by those skilled in the art.

Claims

1. A centrifugal pump pressure reducing device comprising a centrifugal pump body (1), characterized in that, The back of the centrifugal pump body (1) is fixedly connected with a pressure relief cylinder (2), the inner side wall of the pressure relief cylinder (2) is fixedly connected with a pressure relief spring (3), the front end of the pressure relief spring (3) is fixedly connected with a pressure relief block (4), the bottom surface of the pressure relief cylinder (2) is fixedly connected with a pressure relief cylinder (5), the inner bottom wall of the pressure relief cylinder (5) is fixedly embedded with a sealing bearing (6), the inner ring of the sealing bearing (6) is fixedly connected with a rotating lead screw (7), the outer surface of the rotating lead screw (7) is threadedly connected with a pressure relief block (8), the bottom surface of the pressure relief cylinder (5) is fixedly connected with a motor (9), the output end of the motor (9) is fixedly connected with the bottom end of the rotating lead screw (7), the upper surface of the pressure relief block (8) is fixedly connected with a pressure sensitive controller (10), and the outer surface of the pressure relief cylinder (5) is provided with a pressure relief hole (11).

2. A centrifugal pump pressure relief device according to claim 1, wherein The outer surface of the motor (9) is fixedly connected with a reinforcing block (12), and the upper surface of the reinforcing block (12) is fixedly connected with the bottom surface of the pressure relief cylinder (5).

3. A centrifugal pump pressure relief device according to claim 1, wherein The inner side wall of the pressure relief cylinder (2) is fixedly connected with a limiting pad (13), and the motor (9) is connected with a power source through wires.

4. A centrifugal pump pressure relief device according to claim 1, wherein The bottom surface of the centrifugal pump body (1) is fixedly connected with two L-shaped supporting legs (14), and the bottom surface of each L-shaped supporting leg (14) is provided with two mounting holes.

5. A centrifugal pump pressure relief device according to claim 1, wherein, The front surface of the centrifugal pump body (1) is fixedly connected with a setting display screen (17), and the outer surface of the centrifugal pump body (1) is sprayed with an anti-rust layer.

6. A centrifugal pump pressure relief device according to claim 1, wherein The outer surface of the centrifugal pump body (1) is fixedly connected with two handles (15), and the outer surface of each handle (15) is provided with anti-skid lines.

7. A centrifugal pump pressure relief device according to claim 1, wherein The upper surface of the centrifugal pump body (1) is fixedly connected with a high-pressure prompt lamp (16), and the outer surface of the pressure relief block (4) is slidably connected with the inner wall of the pressure relief cylinder (2).

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