Low-energy-consumption variable-speed circulating pump

Abstract

The utility model relates to a low-energy-consumption variable-speed circulating pump, which belongs to the technical field of circulating pumps and comprises a pump body, an input pipe is fixedly mounted on one side of the pump body, a filter main pipe is fixedly mounted at one end of the input pipe, and a backflushing filter is fixedly mounted on the surface of the filter main pipe. According to the low-energy-consumption variable-speed circulating pump, the branch pipes located at the two ends of the backflushing filter are arranged on the surface of the filtering main pipe, and the one-way valves are arranged on the surfaces of the branch pipes, so that when the backflushing filter needs to be cleaned, one part of a medium flows to the input pipe through the branch pipes, and the other part of the medium flows back to the backflushing filter from the output end of the backflushing filter; according to the filter device, the backflushing filter element in the backflushing filter is cleaned, and impurities in the backflushing filter element are flushed off and discharged through the blow-off pipe, so that the problems that the filter device of a common low-energy-consumption variable-speed circulating pump needs to be replaced or cleaned after being used for a period of time, a circulating system needs to be stopped at the moment, and the cost is high are solved. And normal operation of the circulating system is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating pumps, in particular to a low-energy variable-speed circulating pump. Background Art

[0002] A circulating pump is a device used for liquid circulation and transportation, and is widely used in multiple fields such as industry, medical treatment, and laboratories. The circulating pump can quickly and efficiently transport liquids, ensuring their stability and accuracy, and working in various complex environments. The circulating pump mainly consists of parts such as a motor, an impeller, a pump shell, and a sealing device. The motor drives the impeller to rotate, generating a pressure difference to make the liquid flow, and completing the entire transportation process. The circulating pump can operate manually or automatically.

[0003] Among them, a variable-speed circulating pump is a special type of circulating pump, and its characteristic is that it can adjust the operating speed according to the needs of the system, so as to achieve precise control of flow and pressure. By adjusting the rotational speed of the motor, the variable-speed circulating pump can flexibly adapt to the changes in the demand for liquid transportation volume in the system, thereby optimizing the overall energy efficiency of the system, adjusting the flow and pressure according to actual needs, and achieving higher energy efficiency and better system performance. By adjusting the frequency and voltage of the motor according to the system requirements, thereby changing the rotational speed of the motor, the variable-speed circulating pump can automatically adjust the operating speed according to actual needs, reduce energy consumption, improve system efficiency, and at the same time, variable-speed operation can also reduce mechanical wear and extend the service life of the equipment.

[0004] The input end of a common low-energy variable-speed circulating pump usually needs to be equipped with a filtering device to filter impurities in the medium and prevent the impurities from flowing through, which affects the performance of the low-energy variable-speed circulating pump. However, for the filtering device of a common low-energy variable-speed circulating pump, after using it for a period of time, the filtering device needs to be replaced or cleaned. At this time, the circulating system needs to be stopped, which affects the normal operation of the circulating system. In view of this, this application proposes a low-energy variable-speed circulating pump. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a low-energy variable-speed circulating pump, which has the advantages of cleaning the filtering device by using a backwashing structure without stopping the machine, etc., and solves the problem that the filtering device of a common low-energy variable-speed circulating pump needs to be replaced or cleaned after using it for a period of time. At this time, the circulating system needs to be stopped, which affects the normal operation of the circulating system.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A low-energy variable-speed circulating pump, comprising a pump body, on one side of the pump body is fixedly installed an input pipe, at one end of the input pipe is fixedly installed a main filter pipe, on the surface of the main filter pipe is fixedly installed a backflush filter, on the surface of the main filter pipe is fixedly installed a branch pipe, both ends of the branch pipe are respectively located at both ends of the backflush filter, at the bottom of the backflush filter near the input end is fixedly installed a sewage discharge pipe, on the surface of the branch pipe near one end of the input pipe is fixedly installed a check valve;

[0007] The check valve includes a valve body fixedly installed on the surface of the branch pipe, on the inner bottom wall of the valve body is fixedly installed a valve block, on the inner top wall of the valve body is fixedly installed a spring, and at the bottom of the spring is fixedly installed a sphere adapted to the valve block.

[0008] Further, a backflush filter element is fixedly installed inside the backflush filter, and the sewage discharge pipe is located on the side of the backflush filter element away from the input pipe.

[0009] Further, a first solenoid valve is fixedly installed on the surface of the main filter pipe, the first solenoid valve is located at the input end of the backflush filter, a second solenoid valve is fixedly installed on the surface of the branch pipe, and a sewage discharge valve is fixedly installed on the surface of the sewage discharge pipe.

[0010] Further, a controller is fixedly installed at the bottom of the first solenoid valve through a wire, and the controller is connected to the second solenoid valve and the sewage discharge valve through wires.

[0011] Further, a spare filter is fixedly installed on the surface of the branch pipe, and the spare filter is located between the check valve and the second solenoid valve.

[0012] Further, the top of the spare filter is flange-connected to a top plate, and a spare filter element is fixedly installed at the bottom of the top plate.

[0013] Further, a speed reducer is fixedly installed on the top of the pump body, a variable-frequency motor is fixedly installed on the top of the speed reducer, and an output pipe is fixedly installed on one side of the pump body.

[0014] Compared with the prior art, the present utility model provides a low-energy variable-speed circulating pump, having the following

[0015] Beneficial effects:

[0016] The low - energy variable - speed circulating pump is provided with branch pipes at both ends of the back - flush filter on the surface of the main filter pipe. One - way valves are arranged on the surfaces of the branch pipes. During daily use, the medium passes through the main filter pipe and enters the back - flush filter. Under the action of the one - way valves, it will not flow into the branch pipes. When it is necessary to clean the back - flush filter, part of the medium flows through the branch pipes towards the input pipe, and part of it flows back from the output end of the back - flush filter into the back - flush filter to clean the back - flush filter element inside the back - flush filter, wash off the impurities in the back - flush filter element, and discharge them through the sewage discharge pipe, solving the problem that the filtering device of a common low - energy variable - speed circulating pump needs to be replaced or cleaned after being used for a period of time. At this time, the circulating system needs to be stopped, which affects the normal operation of the circulating system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present utility model;

[0018] Figure 2 It is a schematic diagram of the main filter pipe and the branch pipes of the present utility model;

[0019] Figure 3 It is a three - dimensional sectional view of the one - way valve of the present utility model.

[0020] In the figure: 1, pump body; 2, input pipe; 3, main filter pipe; 4, back - flush filter; 41, back - flush filter element; 5, branch pipe; 6, sewage discharge pipe; 7, one - way valve; 71, valve body; 72, valve block; 73, spring; 74, sphere; 8, first solenoid valve; 9, second solenoid valve; 10, sewage discharge valve; 11, controller; 12, spare filter; 13, top plate; 14, spare filter element; 15, reduction gearbox; 16, variable - frequency motor; 17, output pipe. 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 accompanying drawings in 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] Please refer to Figures 1 to 3 , a low - energy variable - speed circulating pump, including a pump body 1. An input pipe 2 is fixedly installed on one side of the pump body 1. One end of the input pipe 2 is fixedly installed with a main filter pipe 3. A back - flush filter 4 is fixedly installed on the surface of the main filter pipe 3. A branch pipe 5 is fixedly installed on the surface of the main filter pipe 3. Both ends of the branch pipe 5 are respectively located at both ends of the back - flush filter 4. A sewage discharge pipe 6 is fixedly installed at the bottom of the back - flush filter 4 near the input end. A one - way valve 7 is fixedly installed on the surface of the branch pipe 5 near one end of the input pipe 2.

[0023] Among them, the one-way valve 7 includes a valve body 71 fixedly installed on the surface of the branch pipe 5. A valve block 72 is fixedly installed on the inner bottom wall of the valve body 71. A spring 73 is fixedly installed on the inner top wall of the valve body 71. The bottom of the spring 73 is fixedly installed with a sphere 74 adapted to the valve block 72.

[0024] When the medium flows from left to right in the main filter pipe 3, under the action of the one-way valve 7, the medium will not flow into the branch pipe 5, which does not affect the flow rate. When the medium flows from the left side of the branch pipe 5, a part directly flows to the pump body 1, and a part flows back to the backwash filter 4 through the right end of the main filter pipe 3 to backwash the backwash filter 4, and the impurities are washed off and discharged through the sewage pipe 6.

[0025] Secondly, a backwash filter element 41 is fixedly installed inside the backwash filter 4. The sewage pipe 6 is located on the side of the backwash filter element 41 away from the input pipe 2.

[0026] At the same time, a first solenoid valve 8 is fixedly installed on the surface of the main filter pipe 3. The first solenoid valve 8 is located at the input end of the backwash filter 4. A second solenoid valve 9 is fixedly installed on the surface of the branch pipe 5. A sewage valve 10 is fixedly installed on the surface of the sewage pipe 6.

[0027] Among them, the bottom of the first solenoid valve 8 is fixedly installed with a controller 11 through a wire. The controller 11 is connected to the second solenoid valve 9 and the sewage valve 10 through wires. By controlling the first solenoid valve 8, the second solenoid valve 9 and the sewage valve 10 through the controller 11, in daily use, the first solenoid valve 8 is opened, and the second solenoid valve 9 and the sewage valve 10 are closed, and the medium directly enters the pump body 1 through the main filter pipe 3 and the backwash filter 4.

[0028] When cleaning the backwash filter 4, the first solenoid valve 8 is closed, and the second solenoid valve 9 and the sewage valve 10 are opened. The medium flows through the left side of the branch pipe 5. A part directly flows to the pump body 1, and a part flows back to the backwash filter 4 through the right end of the main filter pipe 3 to backwash the backwash filter 4, and the impurities are washed off and discharged through the sewage pipe 6.

[0029] At the same time, a spare filter 12 is fixedly installed on the surface of the branch pipe 5. The spare filter 12 is located between the one-way valve 7 and the second solenoid valve 9. During backwash cleaning, the spare filter 12 temporarily filters the medium.

[0030] Among them, the top of the spare filter 12 is flange-connected with a top plate 13. A spare filter element 14 is fixedly installed at the bottom of the top plate 13.

[0031] Secondly, a speed reducer 15 is fixedly installed on the top of the pump body 1. A variable-frequency motor 16 is fixedly installed on the top of the speed reducer 15. An output pipe 17 is fixedly installed on one side of the pump body 1.

[0032] In the use of this embodiment, the first solenoid valve 8, the second solenoid valve 9 and the sewage valve 10 are controlled by the controller 11. When cleaning the backflush filter 4, the first solenoid valve 8 is closed, the second solenoid valve 9 and the sewage valve 10 are opened. The medium flows through the left side of the branch pipe 5. A part of the medium directly flows to the pump body 1 without affecting the system circulation. A part of the medium flows back to the backflush filter 4 through the right end of the filter main pipe 3 to backflush the backflush filter element 41 inside the backflush filter 4. After the impurities are flushed down, they are discharged through the sewage pipe 6.

[0033] All the electrical components mentioned in the text are electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer for control. The existing publicly known electrical connection technologies are not described in detail in the text.

[0034] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-energy variable-speed circulating pump, comprising a pump body (1), characterized in that: One side of the pump body (1) is fixedly installed with an input pipe (2). One end of the input pipe (2) is fixedly installed with a main filter pipe (3). The surface of the main filter pipe (3) is fixedly installed with a backwash filter (4). The surface of the main filter pipe (3) is fixedly installed with a branch pipe (5). Both ends of the branch pipe (5) are respectively located at both ends of the backwash filter (4). The bottom of the backwash filter (4) near the input end is fixedly installed with a sewage discharge pipe (6). The surface of the branch pipe (5) near one end of the input pipe (2) is fixedly installed with a check valve (7). The check valve (7) includes a valve body (71) fixedly installed on the surface of the branch pipe (5). The inner bottom wall of the valve body (71) is fixedly installed with a valve block (72). The inner top wall of the valve body (71) is fixedly installed with a spring (73). The bottom of the spring (73) is fixedly installed with a sphere (74) adapted to the valve block (72).

2. The low-energy variable-speed circulating pump according to claim 1, characterized in that: The inside of the backwash filter (4) is fixedly installed with a backwash filter element (41). The sewage discharge pipe (6) is located on the side of the backwash filter element (41) away from the input pipe (2).

3. A low-energy variable-speed circulating pump according to claim 1, characterized in that: The surface of the main filter pipe (3) is fixedly installed with a first solenoid valve (8). The first solenoid valve (8) is located at the input end of the backwash filter (4). The surface of the branch pipe (5) is fixedly installed with a second solenoid valve (9). The surface of the sewage discharge pipe (6) is fixedly installed with a sewage discharge valve (10).

4. The low-energy variable-speed circulation pump according to claim 3, wherein: The bottom of the first solenoid valve (8) is fixedly installed with a controller (11) through a wire. The controller (11) is connected to the second solenoid valve (9) and the sewage discharge valve (10) through wires.

5. The low-energy consumption variable-speed circulation pump according to claim 3, characterized in that: The surface of the branch pipe (5) is fixedly installed with a spare filter (12). The spare filter (12) is located between the check valve (7) and the second solenoid valve (9).

6. The low-energy variable-speed circulating pump according to claim 5, characterized in that: The top of the spare filter (12) is flange-connected with a top plate (13). The bottom of the top plate (13) is fixedly installed with a spare filter element (14).

7. A low-energy variable-speed circulating pump according to claim 1, characterized in that: The top of the pump body (1) is fixedly installed with a speed reducer (15). The top of the speed reducer (15) is fixedly installed with a variable-frequency motor (16). One side of the pump body (1) is fixedly installed with an output pipe (17).

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