Magnetic drive pump with filter screen

Abstract

The utility model relates to the technical field of magnetic pumps, in particular to a magnetic pump with a filter screen, which comprises a magnetic pump body and a filter mechanism arranged on one side of the magnetic pump body. The filtering mechanism comprises a filtering barrel, communicating pipes connected to the two ends of the filtering barrel respectively, a first-stage filtering net and a second-stage filtering net which are arranged in the filtering barrel at intervals, an electric cleaning assembly arranged on the top wall of the filtering barrel, and a collecting assembly arranged on the lower side of the filtering barrel. The electric cleaning assembly acts on one side of the primary filter screen and one side of the secondary filter screen; the magnetic drive pump further comprises a pressure sensing device and a controller which are arranged on the water outlet of the magnetic drive pump body, and the controller is electrically connected with the pressure sensing device and the magnetic drive pump body. One communicating pipe is connected with a water inlet in one side of the magnetic pump body; furthermore, the magnetic drive pump can monitor the liquid outlet condition of the pump body in real time, so that whether the magnetic drive pump is blocked or not is judged for cleaning; and impurities on one side of the first-stage filter screen and one side of the second-stage filter screen can be conveniently and automatically cleaned and scraped off.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic pumps, in particular to a magnetic pump provided with a filter screen. Background Art

[0002] The magnetic pump is different from the traditional sealed pump. The motor shaft and the pump shaft are not directly connected. Instead, the motor shaft drives the outer magnetic rotor to rotate. The outer magnetic rotor cooperates with the inner magnetic rotor to drive the inner magnetic rotor to rotate through magnetic force. The inner magnetic rotor drives the pump shaft to rotate, so that the impeller rotor on the pump shaft rotates. A sealed cavity formed by an isolation sleeve is provided between the inner magnetic rotor and the outer magnetic rotor of the magnetic pump. The pump shaft and the inner magnetic rotor are enclosed in the sealed cavity. First, it can prevent the liquid from leaking from the pump shaft end to the outside, and second, it can cool the pump shaft and the inner magnetic rotor. Therefore, there is no need to adopt traditional dynamic sealing for the pump shaft to obtain very excellent leakage-free characteristics. Therefore, it is widely used to transport various highly toxic, flammable, explosive and other dangerous media, and plays an important role in the fields of petroleum, chemical industry, medicine, nuclear power, ships, seawater desalination, national defense, etc.

[0003] At present, when a magnetic pump is transporting a medium containing impurities, a filter is set to prevent the impurities from clogging the magnetic pump. However, after long-term use, impurities are easily attached to one side of the filter, causing the filter to be blocked, affecting the magnetic pump's transportation of the medium. In addition, when the magnetic pump is blocked, it cannot be discovered in time, which can easily cause damage to the magnetic pump. Utility Model Content

[0004] The utility model aims to provide a magnetic pump with a filter screen, which is used to solve the problems that impurities are easily attached to one side of the filter screen and cause the filter screen to be blocked during the use of the existing magnetic pump, and the blockage of the magnetic pump cannot be discovered in time.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic pump provided with a filter screen, comprising a magnetic pump body, a filtering mechanism arranged on one side of the magnetic pump body, the filtering mechanism comprising a filter barrel, a connecting pipe respectively connected to the two ends of the filter barrel, a primary filter screen and a secondary filter screen arranged in the filter barrel and arranged at intervals, an electric cleaning component arranged on the top wall of the filter barrel, and a collecting component arranged on the lower side of the filter barrel; the electric cleaning component acts on one side of the primary filter screen and the secondary filter screen; the magnetic pump also includes a pressure sensor device and a controller arranged on the water outlet of the magnetic pump body, and the controller is electrically connected to the pressure sensor device and the magnetic pump body; one of the connecting pipes is connected to the water inlet on one side of the magnetic pump body.

[0006] Furthermore, the electric cleaning assembly includes a U-shaped frame arranged on the upper side of the filter barrel, a motor arranged on the upper side of the U-shaped frame, a threaded rod connected to the output end of the motor, a lifting plate threadedly engaged with the threaded rod, two guide rods arranged on the lower side of the lifting plate, scrapers respectively arranged at one end of the two guide rods, and springs respectively sleeved on the outer walls of the guide rods, one end of the threaded rod is rotatably connected to the upper side of the filter barrel, and the threaded rod is located between the two guide rods, one end of the two guide rods passes through and extends to the interior of the filter barrel, one side of the two scrapers respectively slides with the mesh surface of the primary filter and the secondary filter, and the two springs are located outside the filter barrel; the motor is electrically connected to the controller.

[0007] Furthermore, the collecting assembly includes a collecting shell arranged on the lower side of the filter barrel, a sewage pipe arranged on the lower side of the collecting shell and connected to a sealing cover at one end, and two sewage outlets are arranged at positions corresponding to the lower side of the filter barrel and the collecting shell, and the two sewage outlets are respectively located on one side of the primary filter screen and the secondary filter screen.

[0008] Furthermore, the magnetic pump body includes a suspension, a pump casing connected to one side of the suspension, a sealing gasket arranged at the connection between the suspension and the pump casing, a water inlet pipe connected to one end of the pump casing, and a water outlet pipe connected to one side of the pump casing; one end of one of the connecting pipes is connected to one end of the water inlet pipe through a flange.

[0009] Furthermore, the pressure sensing device includes a pressure sensor arranged on the water outlet pipe and a pressure detector electrically connected to the pressure sensor; the pressure detector is electrically connected to the controller.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The utility model has the following beneficial effects:

[0012] When the magnetic pump body is clogged with impurities, the pressure sensor device transmits the collected signal to the controller, and the controller controls the magnetic pump body to stop running. The controller controls the motor to start, and the blocked impurities are cleaned in time through the electric cleaning component; the impurities attached to one side of the primary filter and the secondary filter are scraped down and cleaned by the electric cleaning component; thus, the magnetic pump can not only monitor the liquid discharge of the pump body in real time, so as to determine whether the magnetic pump is clogged and clean it; but also facilitate the automatic cleaning and scraping of impurities on one side of the primary filter and the secondary filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of a magnetic pump provided with a filter screen according to the utility model;

[0014] Figure 2 It is a partially enlarged cross-sectional schematic diagram of the filtering mechanism of the utility model;

[0015] Figure 3It is a side view schematic diagram of the filter barrel of the utility model;

[0016] Figure 4 The utility model is a system block diagram of a magnetic pump provided with a filter.

[0017] In the figure: 1. suspension; 2. pump housing; 3. outlet pipe; 4. inlet pipe; 5. filter mechanism; 6. filter barrel; 7. connecting pipe; 8. primary filter screen; 9. secondary filter screen; 10. collecting shell; 11. drain pipe; 12. electric cleaning assembly; 13. lifting plate; 14. guide rod; 15. scraper; 16. spring; 17. sealing gasket; 18. pressure sensor; 19. drain port; 20. U-shaped frame; 21. motor; 22. threaded rod. DETAILED DESCRIPTION

[0018] See also Figure 1-4A magnetic pump with a filter screen comprises a magnetic pump body, a filter mechanism 5 arranged on one side of the magnetic pump body, the filter mechanism 5 comprises a filter barrel 6, a connecting pipe 7 respectively connected to both ends of the filter barrel 6, a primary filter screen 8 and a secondary filter screen 9 connected to the filter barrel 6 and arranged at intervals, an electric cleaning component 12 arranged on the top wall of the filter barrel 6, and a collecting component arranged on the lower side of the filter barrel 6. The cross-section of the filter barrel 6 is rectangular, and the impurities in the medium are filtered through the primary filter screen 8 and the secondary filter screen 9 to prevent the impurities from entering the magnetic pump body; the electric cleaning component 12 acts on one side of the primary filter screen 8 and the secondary filter screen 9; the electric cleaning component 12 comprises a U-shaped frame 20 welded on the upper side of the filter barrel 6, and a A motor 21, a threaded rod 22 connected to the output end of the motor 21, a lifting plate 13 threadedly engaged with the threaded rod 22, two guide rods 14 connected to the lower side of the lifting plate 13, scrapers 15 respectively arranged at one end of the two guide rods 14, and springs 16 respectively sleeved on the outer walls of the guide rods 14, one end of the threaded rod 22 is rotatably connected to the upper side of the filter barrel 6, and the threaded rod 22 is located between the two guide rods 14, one end of the two guide rods 14 penetrates and extends to the inside of the filter barrel 6, one side of the two scrapers 15 is respectively slidably engaged with the mesh surfaces of the primary filter screen 8 and the secondary filter screen 9, and the two springs 16 are both located outside the filter barrel 6; the motor 21 is electrically connected to the controller; the controller controls the motor 21 to turn on, and the motor 21 drives the threaded rod 22 to rotate, The lifting plate 13 and the threaded rod 22 move downward in threaded cooperation, the two guide rods 14 move downward, the two springs 16 contract, and drive the two scrapers 15 to move downward, scraping down and cleaning the impurities attached to one side of the primary filter 8 and the secondary filter 9, and then automatically cleaning and scraping off the impurities attached to the primary filter 8 and the secondary filter 9; when the motor 21 drives the lifting plate 13 to rise to the original position, the two springs 16 make the two scrapers 15 close to the top side of the inner wall of the filter barrel 6, thereby improving the sealing between the scrapers 15 and the top side of the inner wall of the filter barrel 6; the magnetic pump also includes a pressure sensor device 18 and a controller arranged on the water outlet of the magnetic pump body, and the controller is electrically connected to the pressure sensor device and the magnetic pump body; a connecting pipe 7 The pressure sensor 18 is connected to the water inlet on one side of the magnetic pump body; the pressure sensing device 18 includes a pressure sensor arranged on the water outlet pipe 3, a pressure detector electrically connected to the pressure sensor, and the pressure detector is electrically connected to the controller; the pressure sensor is used to detect the pressure difference of the liquid transported by the water outlet pipe 3 of the magnetic pump body, and the pressure tester is used to display the pressure value of the fluid detected by the pressure sensor; the A / D converter converts the signal collected by the pressure sensor into a digital signal and transmits it to the display on the pressure detector, the display analyzes the signal collected by the pressure sensor and displays it as a digital value, and displays the digital value of the magnetic pump body through the display, so as to realize real-time monitoring of the liquid discharge of the magnetic pump body, thereby judging whether the magnetic pump body is blocked and cleaning it;If the pressure value decreases significantly or fails to reach the expected pressure, it indicates that the operation of the magnetic pump body is blocked or other abnormal conditions occur. At this time, the controller controls the magnetic pump body to stop running and controls the motor 21 to start, and clean up the blocked impurities in time; when the operation of the magnetic pump body returns to normal, the controller controls the magnetic pump body to start and the motor 21 to turn off. ;

[0019] The collecting assembly includes a collecting shell 10 welded to the lower side of the filter barrel 6, a drain pipe 11 connected to the lower side of the collecting shell 10 and having a sealing cover at one end, and two drain ports 19 are provided at the lower side of the filter barrel 6 and at positions corresponding to the collecting shell 10. The two drain ports 19 are respectively located on one side of the primary filter screen 8 and the secondary filter screen 9; when cleaning one side of the primary filter screen 8 and the secondary filter screen 9, the impurities scraped off enter the collecting shell 10 through the two drain ports 19, and the impurities in the collecting shell 10 are discharged through the drain pipe 11 by rotating and removing the sealing cover.

[0020] The magnetic pump body includes a suspension 1, a pump casing 2 connected to one side of the suspension 1, a sealing gasket 17 arranged at the connection between the suspension 1 and the pump casing 2, a water inlet pipe 4 connected to one end of the pump casing 2, and a water outlet pipe 3 connected to one side of the pump casing 2; one end of one of the connecting pipes 7 is connected to one end of the water inlet pipe 4 through a flange; through the setting of the sealing gasket 17, the sealing gasket 17 can prevent impurities from entering the inside of the magnetic cylinder in the suspension 1, thereby preventing impurities from entering between the two magnetic rotors and causing blockage and damage to the magnetic rotors, thereby avoiding blockage of the magnetic pump body.

[0021] Working principle: The pressure sensor is used to detect the pressure difference of the liquid transported by the outlet pipe 3 of the magnetic pump body, and the pressure tester is used to display the pressure value of the fluid detected by the pressure sensor; the A / D converter converts the signal collected by the pressure sensor into a digital signal and transmits it to the display on the pressure tester. The display analyzes the signal collected by the pressure sensor and displays it as a digital value. The digital value of the pump body displayed on the display is used to monitor the liquid discharge of the magnetic pump body in real time, so as to determine whether the magnetic pump body is blocked and clean it; if the pressure value is significantly reduced or cannot reach the expected pressure, this indicates that the operation of the magnetic pump body is blocked or other abnormal conditions occur. At this time, the controller controls the magnetic pump body to stop running, and controls the motor 21 to start, and clean it in time. Blocked impurities; the motor 21 drives the threaded rod 22 to rotate, the lifting plate 13 and the threaded rod 22 move downward in threaded cooperation, the two guide rods 14 move downward, and the two springs 16 contract, driving the two scrapers 15 to move downward, and the impurities attached to one side of the primary filter 8 and the secondary filter 9 are scraped down and cleaned, and then the impurities attached to the primary filter 8 and the secondary filter 9 are automatically cleaned and scraped off, and the cleaned and scraped impurities enter the collection shell 10 through the two sewage outlets 19, and the sealing cover is removed by rotation, and the impurities in the collection shell 10 are discharged through the sewage pipe 11, and then the impurities attached to the primary filter 8 and the secondary filter 9 are automatically cleaned and scraped off; when the operation of the magnetic pump body returns to normal, the controller controls the magnetic pump body to start and the motor 21 to close.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic pump with a filter screen, comprising a magnetic pump body and a filter mechanism (5) arranged on one side of the magnetic pump body, characterized in that: The filtering mechanism (5) comprises a filtering barrel (6), a connecting pipe (7) respectively connected to both ends of the filtering barrel (6), a primary filter screen (8) and a secondary filter screen (9) arranged in the filtering barrel (6) and arranged at intervals, an electric cleaning component (12) arranged on the top wall of the filtering barrel (6), and a collecting component arranged on the lower side of the filtering barrel (6); the electric cleaning component (12) acts on one side of the primary filter screen (8) and the secondary filter screen (9); the magnetic pump further comprises a pressure sensing device (18) and a controller arranged on the water outlet of the magnetic pump body, the controller being electrically connected to the pressure sensing device and the magnetic pump body; and one of the connecting pipes (7) is connected to the water inlet on one side of the magnetic pump body.

2. A magnetic pump with a filter screen as claimed in claim 1, characterized in that: The electric cleaning assembly (12) comprises a U-shaped frame (20) arranged on the upper side of the filter barrel (6), a motor (21) arranged on the upper side of the U-shaped frame (20), a threaded rod (22) connected to the output end of the motor (21), a lifting plate (13) threadedly engaged with the threaded rod (22), two guide rods (14) arranged on the lower side of the lifting plate (13), scrapers (15) respectively arranged at one end of the two guide rods (14), and springs (16) respectively sleeved on the outer walls of the guide rods (14), one end of the threaded rod (22) being rotatably connected to the upper side of the filter barrel (6), and the threaded rod (22) being located between the two guide rods (14), one end of the two guide rods (14) both passing through and extending into the interior of the filter barrel (6), one side of the two scrapers (15) respectively slidingly engaging with the mesh surfaces of the primary filter screen (8) and the secondary filter screen (9), the two springs (16) both being located outside the filter barrel (6), and the motor (21) being electrically connected to a controller.

3. A magnetic pump with a filter as claimed in claim 2, characterized in that: The collecting assembly comprises a collecting shell (10) arranged at the lower side of the filter barrel (6), and a sewage discharge pipe (11) arranged at the lower side of the collecting shell (10) and connected to a sealing cover at one end. Two sewage discharge ports (19) are arranged at positions corresponding to the collecting shell (10) at the lower side of the filter barrel (6), and the two sewage discharge ports (19) are respectively located at one side of the primary filter screen (8) and the secondary filter screen (9).

4. A magnetic pump with a filter as claimed in claim 1, characterized in that: The magnetic pump body comprises a suspension (1), a pump casing (2) connected to one side of the suspension (1), a sealing gasket (17) provided at the connection between the suspension (1) and the pump casing (2), a water inlet pipe (4) connected to one end of the pump casing (2), and a water outlet pipe (3) connected to one side of the pump casing (2); one end of one of the connecting pipes (7) is connected to one end of the water inlet pipe (4) via a flange.

5. A magnetic pump with a filter screen as claimed in claim 4, characterized in that: The pressure sensing device (18) comprises a pressure sensor arranged on the water outlet pipe (3) and a pressure detector electrically connected to the pressure sensor; the pressure detector is electrically connected to the controller.

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