Centrifugal water pump for heat supply network circulation

Abstract

The utility model relates to the related field of centrifugal water pumps, in particular to a centrifugal water pump for heat supply network circulation, which comprises a fixing frame, a centrifugal pump body, a water inlet pipe, a water outlet pipe, a pretreatment mechanism, a fixing cylinder, a filter screen, an electric motor, a protective cover, a worm, a worm gear, a transmission shaft, a sleeve, a fixing rod, an adhesive cylinder, a cleaning port, a sealing plate and the like. According to the centrifugal pump, the mucilage glue cylinder is arranged, the sleeve drives the fixing rod to rotate, the fixing rod drives the mucilage glue cylinder to rotate, light impurities such as batting in water flow are attached to the mucilage glue cylinder, the amount of batting attached to the filter screen and entering the centrifugal pump body is reduced, and the water flow can stably enter the centrifugal pump; meanwhile, the pollution load borne by the filter screen is reduced, so that the cleaning or replacing period of the filter screen is prolonged, the maintenance workload can be reduced, and the practicability of the centrifugal pump is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal water pumps, and in particular to a centrifugal water pump for heating network circulation. Background Technology

[0002] The heating network circulation system typically refers to the hot water circulation system in a city's centralized heating system. This system is mainly responsible for transporting the heat generated by the heat source to the user end through hot water as a medium to meet the demand for heating or domestic hot water. Afterward, the cooled water is returned to the heat source for reheating, forming a closed loop process. Centrifugal water pumps are usually used in the heating network circulation system to drive the hot water or heat energy medium to circulate in the heating network, ensuring that heat can be effectively transported from the heat source to each user end.

[0003] The existing publication number CN220487953U discloses a multi-stage centrifugal pump with a filter device, which filters the water flow through a filter screen to prevent dust from adhering to the rotating blades, inlet pipe and outlet pipe, thus saving cleaning workload.

[0004] The existing patent has a poor filtration effect on water flow. When the water source is not pure, especially in an open system, the water flow may contain light impurities such as lint. These impurities can easily clog the filter holes and affect the stable flow of water. In addition, some of the lint is so small that it can easily pass through the filter holes and enter the centrifugal pump, which may affect the stability of the centrifugal pump during use. Furthermore, the pollution load on the filter screen will increase, which will increase the maintenance workload and reduce the practicality of the centrifugal pump. Summary of the Invention

[0005] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a centrifugal water pump for heating network circulation to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a centrifugal water pump for heat network circulation, comprising a fixed frame, a centrifugal pump body installed in the fixed frame, an inlet pipe and an outlet pipe respectively provided at the inlet and outlet ends of the centrifugal pump body, and a pretreatment mechanism installed on the inlet pipe, the pretreatment mechanism comprising a fixed cylinder installed on the inlet pipe and communicating with the inside of the inlet pipe, a filter screen and an electric motor respectively installed on the inside and bottom end face of the fixed cylinder;

[0007] A protective cover is fixedly installed on the end face of the filter screen near the water inlet pipe;

[0008] A worm is coaxially mounted on the output shaft of the electric motor. The worm moves through the bottom end face of the protective cover and is rotatably connected to the inside of the protective cover. A worm wheel is provided on one side of the worm to mesh with it. A transmission shaft that is rotatably connected to the inside of the protective cover is installed on the inner ring of the worm wheel.

[0009] The drive shaft extends through the inner side of the protective cover and the side surface of the filter screen. A sleeve is fitted on the end of the drive shaft away from the worm gear. Several fixing rods located on the outer side of the filter screen are installed on the side surface of the sleeve. Each fixing rod is fitted with an adhesive tube that is movably connected to the inner wall of the fixing tube.

[0010] Preferably, the top surface of the fixed cylinder is provided with a cleaning port, the inner side of which completely covers the top of the filter screen and the upper adhesive tube, and a sealing plate is locked and fixed inside the cleaning port.

[0011] Preferably, the bottom end face of the sealing plate is arc-shaped, and the bottom end face of the sealing plate is flush with the top of the inner side of the fixed cylinder.

[0012] Preferably, the fixing rods on the side surface of the sleeve are distributed in an equally spaced ring.

[0013] Preferably, the adhesive tube and the side surface of the filter screen are spaced apart, and the adhesive tube and the filter screen are parallel.

[0014] Preferably, the side surface of the fixing rod is provided with a positioning protrusion, and the inner ring of the adhesive tube is provided with a positioning groove corresponding to the positioning protrusion.

[0015] The beneficial effects of this utility model are:

[0016] This invention incorporates an adhesive tube, which, through a sleeve, drives a fixed rod to rotate. The fixed rod, in turn, causes the adhesive tube to rotate, adhering light impurities such as lint in the water flow to adhere to the adhesive tube. This reduces the amount of lint adhering to the filter screen and entering the centrifugal pump body, facilitating a stable water flow into the centrifugal pump. Simultaneously, it reduces the contamination load on the filter screen, extending its cleaning or replacement cycle. This reduces maintenance workload and enhances the practicality of the centrifugal pump. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the pretreatment mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the adhesive tube distribution structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the positioning protrusion connection structure of this utility model.

[0021] The components include: a fixed frame-1, a centrifugal pump body-2, an inlet pipe-3, an outlet pipe-4, a pretreatment mechanism-5, a fixed cylinder-51, a filter screen-52, an electric motor-53, a protective cover-54, a worm gear-55, a worm wheel-56, a drive shaft-57, a sleeve-58, a fixed rod-59, an adhesive tube-510, a cleaning port-511, a sealing plate-512, and a positioning protrusion-513. Detailed Implementation

[0022] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0023] like Figure 1 As shown, this utility model provides a centrifugal water pump for heating network circulation, including a fixed frame 1 and a centrifugal pump body 2 locked and fixed in the fixed frame 1. The inlet end and outlet end of the centrifugal pump body 2 are respectively provided with an inlet pipe 3 and an outlet pipe 4.

[0024] like Figures 2 to 4 As shown, this embodiment also includes a pretreatment mechanism 5 installed on the water inlet pipe 3. The pretreatment mechanism 5 includes a fixed cylinder 51 coaxially fixedly installed on the left end of the water inlet pipe 3 and communicating with the inside of the water inlet pipe 3, a filter screen 52 locked and fixed to the inside and bottom surface of the fixed cylinder 51 respectively, and an electric motor 53.

[0025] A protective cover 54 is fixedly installed in the middle of the right end face of the filter screen 52;

[0026] A worm 55 is coaxially mounted on the output shaft of the electric motor 53. The worm 55 moves vertically through the bottom end face of the protective cover 54 and is rotatably connected to the top of the inner side of the protective cover 54. A worm wheel 56 is provided on one side of the worm 55 to mesh with it. A drive shaft 57 is mounted on the inner ring of the worm wheel 56 and is rotatably connected to the inner side of the protective cover 54, so that the drive shaft 57 can be driven to rotate synchronously by the worm 55 and the worm wheel 56.

[0027] The drive shaft 57 moves through the inner side of the protective cover 54 and the side surface of the filter screen 52, and the left end of the drive shaft 57 is fixedly sleeved with a sleeve 58. The sleeve 58 is equipped with 6 fixing rods 59 located on the left side of the filter screen 52 along the circumferential side surface. Each fixing rod 59 is fitted with an adhesive tube 510 that is movably connected to the inner wall of the fixing tube 51.

[0028] Among them, the fixing rods 59 on the side surface of the sleeve 58 are distributed in an equally spaced ring shape, which makes it easier for the adhesive tube 510 outside the fixing rods 59 to more stably intercept light impurities in the water.

[0029] The adhesive tube 510 and the side surface of the filter screen 52 are provided with a gap, and the adhesive tube 510 and the filter screen 52 are parallel to each other to reduce the friction between the adhesive tube 510 and the filter screen 52.

[0030] In this embodiment, the top surface of the fixed cylinder 51 is provided with a cleaning port 511. The inner side of the cleaning port 511 completely covers the top of the filter screen 52 and the upper adhesive cylinder 510. A sealing plate 512 is locked and fixed inside the cleaning port 511, which facilitates cleaning impurities on the filter screen 52 and the adhesive cylinder 510 after the sealing plate 512 is removed. It also facilitates pulling the adhesive cylinder 510 upward through the cleaning port 511 to detach it from the fixed rod 59 after the sealing plate 512 is removed, so as to facilitate the replacement of the adhesive cylinder 59.

[0031] The bottom surface of the sealing plate 512 is arc-shaped, and the bottom surface of the sealing plate 512 is flush with the top of the inner side of the fixing cylinder 51, which makes it easy for the adhesive cylinder 510 to rotate inside the sealing plate 512 and the fixing cylinder 51.

[0032] In this embodiment, a positioning protrusion 513 is provided on the side surface of the fixing rod 59, and a positioning groove corresponding to the positioning protrusion 513 is provided on the inner ring of the adhesive tube 510, which improves the stability of the adhesive tube 51 connecting the fixing rod 59.

[0033] In this embodiment, the adhesive cartridge 510 is made of silicone material coated with environmentally friendly adhesive, which has good heat resistance and is more environmentally friendly.

[0034] Specifically, during use, the fixing frame 1 is installed in the heating network circulation system, and the fixing cylinder 51 is connected to the water inlet of the heating network circulation system, while the water outlet pipe 4 is connected to the water outlet of the heating network circulation system. By starting the centrifugal pump body 2 in conjunction with the water inlet pipe 3 and the fixing cylinder 51, hot water is drawn from the heating network, and the hot water is transported outward through the water outlet pipe 4, so that the hot water flows in the heating network.

[0035] Furthermore, when hot water flows into the centrifugal pump body 2 through the fixed cylinder 51, it filters impurities in the water through the filter screen 52. At the same time, the electric motor 53 can be started to drive the worm gear 55 to rotate. The worm gear 55, in conjunction with the worm wheel 56, drives the drive shaft 57 to rotate. The drive shaft 57 drives the sleeve 58, the fixed rod 59, and the adhesive tube 510 to rotate. Floss and other light impurities in the water flow are adhered to the adhesive tube 510, thereby reducing the amount of impurities entering the centrifugal pump body 2, which is beneficial to the stable use of the centrifugal pump body 2 in the heating network circulation system.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centrifugal water pump for heating network circulation, comprising a fixed frame and a centrifugal pump body installed in the fixed frame, wherein the inlet end and outlet end of the centrifugal pump body are respectively provided with an inlet pipe and an outlet pipe; Its features are: It also includes a pretreatment mechanism installed on the water inlet pipe, the pretreatment mechanism including a fixed cylinder installed on the water inlet pipe and communicating with the inside of the water inlet pipe, a filter screen installed on the inside of the fixed cylinder and the bottom end face respectively, and an electric motor. A protective cover is fixedly installed on the end face of the filter screen near the water inlet pipe; A worm is coaxially mounted on the output shaft of the electric motor. The worm moves through the bottom end face of the protective cover and is rotatably connected to the inside of the protective cover. A worm wheel is provided on one side of the worm to mesh with it. A transmission shaft that is rotatably connected to the inside of the protective cover is installed on the inner ring of the worm wheel. The drive shaft extends through the inner side of the protective cover and the side surface of the filter screen. A sleeve is fitted on the end of the drive shaft away from the worm gear. Several fixing rods located on the outer side of the filter screen are installed on the side surface of the sleeve. Each fixing rod is fitted with an adhesive tube that is movably connected to the inner wall of the fixing tube.

2. The centrifugal water pump for heating network circulation according to claim 1, characterized in that: The top surface of the fixed cylinder has a cleaning port, the inside of which completely covers the top of the filter screen and the adhesive tube at the top. A sealing plate is locked and fixed inside the cleaning port.

3. The centrifugal water pump for heating network circulation according to claim 2, characterized in that: The bottom surface of the sealing plate is arc-shaped, and the bottom surface of the sealing plate is flush with the top of the inner side of the fixed cylinder.

4. The centrifugal water pump for heating network circulation according to claim 1, characterized in that: The fixing rods on the side surface of the sleeve are distributed in an equally spaced ring.

5. A centrifugal water pump for heating network circulation according to claim 1, characterized in that: The adhesive tube is spaced apart from the side surface of the filter screen, and the adhesive tube is parallel to the filter screen.

6. A centrifugal water pump for heating network circulation according to claim 1, characterized in that: The side surface of the fixing rod is provided with a positioning protrusion, and the inner ring of the adhesive tube is provided with a positioning groove corresponding to the positioning protrusion.

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