Integrated pressure-adjustable rotor pump

Abstract

The utility model discloses an integrated pressure-adjustable rotor pump, and belongs to the technical field of rotor pump equipment. Comprising a base and a pressure regulating pipe mechanism, a rotor pump body is fixedly connected to the front portion of the upper surface of the base, and the pressure regulating pipe mechanism is arranged at the outer end of an outlet pipe of the rotor pump body. A diaphragm is arranged in the pressure regulating pipe mechanism, when the conveying pipeline is blocked or under other conditions, the pressure in the pipeline is increased, fluid can jack up the diaphragm, the pressure applied to the pressure sensor by the pressure spring is increased, the sensor can transmit a signal to a control unit of the variable frequency motor, and the rotating speed of the variable frequency motor is correspondingly reduced; and the flow conveying of the rotor pump main body is correspondingly slowed down, so that the pressure in the conveying pipeline is reduced, and the condition that the pipeline or the pump body is damaged is prevented.

Description

An integrated adjustable pressure rotor pump Technical Field

[0001] This utility model belongs to the technical field of rotor pump equipment, specifically relating to an integrated adjustable pressure rotor pump. Background Technology

[0002] A rotary pump is a pump that increases the energy of a liquid by changing its working volume through the relative motion between the rotor and the pump body. A rotary pump is a rotating positive displacement pump with positive displacement characteristics; its flow rate does not change with back pressure.

[0003] A rotary pump is a type of positive displacement pump. It consists of a rotating rotor and a stationary pump body. It lacks suction and discharge valves, changing its working volume through the relative movement between the rotor and the pump body. The rotating rotor's squeezing action discharges the liquid, while simultaneously creating a low-pressure space on the other side to allow for continuous liquid intake. Most current rotary pumps have a relatively standardized and simple structure, lacking automatic pressure regulation. During operation, if the outlet pipe becomes blocked or other issues arise, the pressure in the pipe will increase rapidly. Since the flow rate of a rotary pump does not change with back pressure, this can easily damage the outlet pipe or the pump body itself, resulting in property damage. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art and provide an integrated adjustable pressure rotor pump.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: an integrated adjustable pressure rotor pump, including a base and a pressure regulating pipe mechanism;

[0006] The rotor pump body is fixedly connected to the front of the upper surface of the base, and the pressure regulating pipe mechanism is located at the outer end of the outlet pipe of the rotor pump body.

[0007] The pressure regulating pipe mechanism includes a connecting pipe fixedly connected to the outer end of the outlet pipe of the rotor pump body. An extension pipe is vertically connected to the top of the middle part of the upper surface of the connecting pipe. The bottom of the extension pipe expands outward to form an expansion cavity. A retaining ring is fixedly connected to the inner surface of the expansion cavity. A diaphragm is provided inside the retaining ring. A gasket is fixedly connected to the upper surface of the diaphragm. An external thread is provided on the upper part of the outer surface of the extension pipe. A cap is threaded to the top of the extension pipe. A pressure sensor is fixedly connected to the top of the inside of the cap. A compression spring is vertically fixedly connected between the pressure sensor and the gasket.

[0008] Preferably, a support base is vertically fixedly connected to the rear part of the upper surface of the base, and a variable frequency motor is horizontally fixedly connected to the upper surface of the support base. The output shaft of the variable frequency motor is fixedly connected to the input shaft of the rotor pump body.

[0009] Preferably, the control unit of the variable frequency motor is connected to the pressure sensor signal.

[0010] Preferably, the central axes of the pressure sensor, the compression spring, the gasket, and the diaphragm are located on the same straight line.

[0011] Preferably, the diaphragm is made of rubber.

[0012] Preferably, the upper surface of the base has multiple vertically penetrating mounting holes.

[0013] The beneficial effects of this utility model are as follows: By setting up a variable frequency motor and a pressure regulating pipe mechanism, the fluid is introduced into the delivery pipeline through the pressure regulating pipe mechanism during operation. The pressure regulating pipe mechanism is equipped with a diaphragm. When the delivery pipeline is blocked or other situations occur, the internal pressure of the pipeline increases, and the fluid will push up the diaphragm. The height of the gasket at the top of the diaphragm rises, and the distance between it and the pressure sensor decreases. The pressure applied to the pressure sensor by the compression spring increases, and the sensor will transmit a signal to the control unit of the variable frequency motor. The speed of the variable frequency motor will decrease accordingly, and the delivery of flow by the rotor pump body will also slow down accordingly, thereby reducing the pressure inside the delivery pipeline and preventing damage to the pipeline or pump body. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 is a front view of the structure of this utility model;

[0016] Figure 3 is a structural schematic diagram of the pressure regulating tube mechanism in this utility model.

[0017] In the diagram: 1. Base; 2. Rotary pump body; 3. Support base; 4. Variable frequency motor; 5. Pressure regulating pipe mechanism; 51. Connecting pipe; 52. Extension pipe; 53. Snap ring; 54. Diaphragm; 55. Gasket; 56. Cap; 57. Pressure sensor; 58. Compression spring; 59. Wire hole; 6. Mounting hole. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0019] Example: An integrated adjustable pressure rotor pump, as shown in Figures 1-3, includes a base 1 and a pressure regulating pipe mechanism 5;

[0020] The front part of the upper surface of the base 1 is fixedly connected to the rotor pump body 2, and the pressure regulating pipe mechanism 5 is set at the outer end of the outlet pipe of the rotor pump body 2.

[0021] The pressure regulating pipe mechanism 5 includes a connecting pipe 51 fixedly connected to the outer end of the outlet pipe of the rotor pump body 2. The top end of the middle part of the upper surface of the connecting pipe 51 is vertically connected to an extension pipe 52. The bottom of the extension pipe 52 expands outward to form an expansion cavity. A retaining ring 53 is fixedly connected to the inner surface of the expansion cavity. A diaphragm 54 is provided inside the retaining ring 53. A gasket 55 is fixedly connected to the upper surface of the diaphragm 54. An external thread is provided on the upper part of the outer surface of the extension pipe 52. A cap 56 is threadedly connected to the top end of the extension pipe 52. A pressure sensor 57 is fixedly connected to the top end inside the cap 56. A compression spring 58 is vertically fixedly connected between the pressure sensor 57 and the gasket 55.

[0022] A support base 3 is vertically fixed to the rear part of the upper surface of the base 1, and a variable frequency motor 4 is horizontally fixed to the upper surface of the support base 3. The output shaft of the variable frequency motor 4 is fixedly connected to the input shaft of the rotor pump body 2.

[0023] The control unit of the variable frequency motor 4 is connected to the pressure sensor 57.

[0024] When the device is running, it transports fluid through the rotor pump body 2. When the transport pipeline is blocked or other situations occur, the internal pressure of the pipeline increases, and the pressure inside the pressure regulating pipe mechanism 5 also increases synchronously. The fluid will push the diaphragm 54 upward, and the height of the gasket 55 at the top of the diaphragm 54 will rise synchronously. The distance between it and the pressure sensor 57 will decrease. At this time, the pressure applied to the pressure sensor 57 by the compression spring 58 will increase, and the pressure sensor 57 will transmit the signal to the control unit of the variable frequency motor 4. The control unit controls the speed of the variable frequency motor 4 to decrease, and the rotor speed in the rotor pump body 2 will also decrease synchronously. Its flow rate will also slow down accordingly, thereby reducing the pressure inside the transport pipeline and preventing damage to the pipeline or pump body.

[0025] Since the cap 56 is installed on the top of the extension tube 52 by means of a threaded connection, the distance between the top of the cap 56 and the gasket 55 can be adjusted by rotating the cap 56, thereby changing the distance between the pressure sensor 57 and the gasket 55, and thus changing the upper limit of the outlet pressure of the device. The larger the distance between the two, the larger the upper limit, and vice versa.

[0026] The top of the cap 56 has a through hole 59, through which the signal line of the pressure sensor 57 can extend outward and connect to the control unit of the variable frequency motor 4.

[0027] The central axes of the pressure sensor 57, the compression spring 58, the gasket 55, and the diaphragm 54 are located on the same straight line.

[0028] The fact that the central axes of the four components are aligned on the same straight line ensures stable pressure transmission, allowing the pressure sensor 57 to receive force precisely, thereby ensuring the accuracy of its output signal and thus the accuracy of flow regulation.

[0029] The diaphragm 54 is made of rubber.

[0030] The rubber material is stable and has good deformation and resilience, making it suitable for use in the diaphragm 54 structure.

[0031] The upper surface of the base 1 has multiple vertical mounting holes 6.

[0032] Multiple mounting holes 6 facilitate the installation and fixation of the device on the mounting structure or other mounting surface.

[0033] The principle of this invention is as follows: When the conveying pipeline is blocked or other conditions occur, the internal pressure of the pipeline increases, and the pressure inside the pressure regulating pipe mechanism 5 also increases synchronously. The fluid will push the diaphragm 54 upward, and the height of the gasket 55 at the top of the diaphragm 54 will rise synchronously. The distance between it and the pressure sensor 57 will decrease. At this time, the pressure applied to the pressure sensor 57 by the compression spring 58 will increase, and the pressure sensor 57 will transmit the signal to the control unit of the variable frequency motor 4. The control unit controls the speed of the variable frequency motor 4 to decrease, and the rotor speed in the rotor pump body 2 will also decrease synchronously. Its flow delivery will also slow down accordingly, thereby reducing the pressure inside the conveying pipeline and preventing damage to the pipeline or pump body.

[0034] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. An integrated adjustable pressure rotor pump, characterized in that, The system includes a base (1) and a pressure regulating pipe mechanism (5); a rotor pump body (2) is fixedly connected to the front of the upper surface of the base (1), and the pressure regulating pipe mechanism (5) is located at the outer end of the outlet pipe of the rotor pump body (2); the pressure regulating pipe mechanism (5) includes a connecting pipe (51) fixedly connected to the outer end of the outlet pipe of the rotor pump body (2), and an extension pipe (52) is vertically connected to the top of the middle part of the upper surface of the connecting pipe (51). The bottom of the extension pipe (52) expands outward to form an expansion cavity. A retaining ring (53) is fixedly connected to the inner surface of the extension tube (52). A diaphragm (54) is provided inside the retaining ring (53). A gasket (55) is fixedly connected to the upper surface of the diaphragm (54). An external thread is provided on the upper part of the outer surface of the extension tube (52). A cap (56) is threadedly connected to the top end of the extension tube (52). A pressure sensor (57) is fixedly connected to the top end inside the cap (56). A compression spring (58) is vertically fixedly connected between the pressure sensor (57) and the gasket (55).

2. The integrated adjustable pressure rotor pump as described in claim 1, characterized in that, A support base (3) is vertically fixed to the rear part of the upper surface of the base (1), and a variable frequency motor (4) is horizontally fixed to the upper surface of the support base (3). The output shaft of the variable frequency motor (4) is fixedly connected to the input shaft of the rotor pump body (2).

3. An integrated adjustable pressure rotor pump as described in claim 2, characterized in that, The control unit of the variable frequency motor (4) is connected to the pressure sensor (57) via signal connection.

4. An integrated adjustable pressure rotor pump as described in claim 1, characterized in that, The central axes of the pressure sensor (57), the compression spring (58), the gasket (55), and the diaphragm (54) are located on the same straight line.

5. An integrated adjustable pressure rotor pump as described in claim 1, characterized in that, The diaphragm (54) is made of rubber.

6. An integrated adjustable pressure rotor pump as described in claim 1, characterized in that, The upper surface of the base (1) is provided with multiple vertical mounting holes (6).

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