Water purification backwashing pre-filter capable of automatically scraping and washing

Abstract

The utility model relates to the technical field of water purification backwash prefilters, and discloses an automatic scraping water purification backwash prefilter, which comprises a pressure gauge and a motor, a water pipe is fixedly mounted on the lower surface of the pressure gauge, and a valve head is arranged on the outer surface of the water pipe. The driving gear drives the driven bevel gear to rotate, the driven bevel gear drives the inner sealing piece to rotate, the inner sealing piece drives the outer framework to rotate, and therefore the scraping strip installed on the outer framework is driven to scrape and wash impurities adhering to the filter cover, and the motor drives the outer framework and the ball valve to work synchronously. When the motor drives the ball valve to rotate, the internal filter element is driven to move downwards, the internal backwashing spring is in a compressed state, automatic backwashing is achieved, when the motor drives the ball valve to be closed, the internal filter element moves upwards under the elastic force of the backwashing spring and is in a filtering state, and therefore the effect that the surfaces of the filter casing and the filter element are automatically scraped and washed is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a water purification backwashing pre-filter, in particular to an automatic scraping and washing water purification backwashing pre-filter. Background Art

[0002] The pre-filter is the first coarse filtration device for the water used in the whole house. It can filter out mud, rust, and large particles in tap water. It is usually installed behind the water meter of the water inlet pipe to ensure that the large amount of precipitated impurities produced in the pipe network will not cause harm to the human body, and it plays an active protective role in concealed pipes, faucets, electrical appliances, etc. However, as the impurities on the filter cover increase, it will affect the filtration efficiency and filtration effect, and the impurities on the filter cover need to be scraped and washed.

[0003] At present, impurities on the filter cover of the scrapeable pre-filter are generally removed by manual scraping, but the manual scraping has low efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an automatic scraping and backwashing pre-filter for clean water to solve the problem mentioned in the above background technology that impurities on the filter cover of the scrapable pre-filter are generally removed by manual scraping, and the manual scraping has low efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic scraping and backwashing pre-filter for purified water, comprising a pressure gauge and a motor, a water pipe is fixedly mounted on the lower surface of the pressure gauge, a valve head is arranged on the outer surface of the water pipe, a filter cover is fixedly mounted on the lower surface of the valve head, an outer seal is arranged on the filter cover away from the lower surface of the valve head, an inner seal is arranged inside the outer seal, a gear cover connecting frame is fixedly mounted on the outer surface of the outer seal, a gear cover is arranged on the outer surface of the gear cover connecting frame, a protective shell is fixedly connected to the outer surface of the gear cover, and the output of the motor The end is fixedly connected with a connecting rod through the inside of a protective shell, a main gear is fixedly installed on the outer surface of the connecting rod, a driven helical gear and a driven spur gear are meshed and connected on the outer surface of the main gear, an inner seal is fixedly connected to the middle part of the driven helical gear, the outer surface of the upper end of the inner seal is fixedly connected with an exoskeleton through the inside of a filter cover, a scraper strip is provided on the outer surface of the exoskeleton, a filter element is provided inside the filter cover, a sewage ball valve is fixedly installed on the output end of the driven spur gear, a ball valve connector is fixedly installed inside the protective shell, and the outer surface of the sewage ball valve is movably connected to the outer surface of the ball valve connector.

[0006] By adopting the above technical scheme, the active gear drives the driven bevel gear to rotate, the driven bevel gear drives the inner seal to rotate, the inner seal drives the outer frame to rotate, thereby driving the scraper installed on the outer frame to scrape and wash the impurities stuck on the filter cover, and the motor drives the outer frame and the ball valve to work synchronously. When the ball valve is opened, the internal filter element will be driven downward under the pressure of the water flow, and the internal backwashing spring will be in a compressed state to achieve automatic backwashing. When the motor drives the ball valve to close, the internal filter element moves upward under the elastic force of the backwashing spring and is in a filtering state, thereby achieving the effect of automatically scraping and washing the outer surface of the filter cover and the filter element.

[0007] Preferably, the driven helical gear is arranged inside the gear cover and the gear cover connecting frame.

[0008] By adopting the above technical solution, the driven helical gear is provided inside the gear cover and the gear cover connecting frame, so as to protect the driven helical gear.

[0009] Preferably, a slot is provided on the outer surface of the outer skeleton, a scraper strip is movably connected inside the slot, and the outer surface of the scraper strip is in interference contact with the inner surface of the filter cover and the outer surface of the filter element.

[0010] By adopting the above technical scheme, a card slot is opened on the outer surface of the outer frame, and a scraper strip is movably connected inside the card slot. The outer surface of the scraper strip is in interference contact with the inner surface of the filter cover and the outer surface of the filter element under the drive of the motor. The outer frame rotates, driving the scraper strip to scrape the surface of the filter cover and the filter element, driving impurities to fall off. At the same time, a card-engaging connection is adopted, which makes it easier and faster to replace the scraper strip when necessary.

[0011] Preferably, grooves are provided at both upper and lower ends of the inner seal, and O-rings are provided inside the grooves to seal the outer seal and the ball valve connector respectively.

[0012] By adopting the above technical solution, grooves are provided at both the upper and lower ends of the inner seal, and O-rings are provided inside the grooves to seal the outer seal and the ball valve connector respectively, making the structure safer and more efficient.

[0013] Preferably, a rubber piece is tightly arranged between the gear cover connecting frame and the bottom surface of the filter cover, and the friction force F1 generated by the rubber piece is greater than the force F2 exerted on the driven helical gear when the motor drives it.

[0014] By adopting the above technical solution, a rubber part is pressed between the gear cover connecting frame and the bottom surface of the filter cover. The friction force F1 generated by the rubber part is greater than the force F2 that the driven bevel gear is subjected to when the motor drives the driven bevel gear, so that the gear cover connecting frame and the filter cover will not fall off during operation, and the operation is safer and more efficient.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The automatic scraping and backwashing pre-filter of the clean water drives the driven bevel gear to rotate through the active gear, the driven bevel gear drives the inner seal to rotate, the inner seal drives the outer frame to rotate, thereby driving the scraper installed on the outer frame to scrape the impurities stuck on the filter cover, and the motor drives the outer frame and the ball valve to work synchronously. When the ball valve is opened, the internal filter element will be driven downward under the pressure of the water flow, and the internal backwashing spring will be in a compressed state to achieve automatic backwashing. When the motor drives the ball valve to close, the internal filter element moves upward under the elastic force of the backwashing spring and is in a filtering state, thereby achieving the effect of automatically scraping and washing the surface of the filter cover and the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 3 This is a front cross-sectional schematic diagram of the structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the driven helical gear of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the driven spur gear of the utility model.

[0022] In the figure: 1. pressure gauge; 2. valve head; 3. filter cover; 4. outer seal; 5. inner seal; 6. gear cover connecting frame; 7. gear cover; 8. motor; 9. connecting rod; 10. main gear; 11. driven helical gear; 12. outer frame; 13. scraper bar; 14. driven spur gear; 15. sewage ball valve; 16. ball valve connector; 17. filter element. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] Please refer to Figure 1-5 ,

[0026] A valve head 2 is provided on the outer surface of the water pipe, a filter cover 3 is fixedly installed on the lower surface of the valve head 2, an outer seal is provided on the lower surface of the filter cover 3 away from the valve head 2, an inner seal is provided inside the outer seal, grooves are provided at both upper and lower ends of the inner seal, O-rings are provided inside the grooves, respectively sealing the outer seal and the ball valve connector 16, making the structure safer and more efficient, a gear cover connecting frame 6 is fixedly installed on the outer surface of the outer seal, a gear cover 7 is provided on the outer surface of the gear cover connecting frame 6, a protective shell is fixedly connected to the outer surface of the gear cover 7, a rubber part is pressed between the gear cover connecting frame 6 and the bottom surface of the filter cover 3, and the friction force F generated by the rubber part 1 is greater than the force F2 that the motor 8 drives the driven helical gear 11 to receive, so that the gear cover connecting frame 6 and the filter cover 3 will not fall off when they are in operation, and the operation is safer and more efficient. The output end of the motor 8 is fixedly connected with a connecting rod 9 through the inside of the protective shell, and a main gear 10 is fixedly installed on the outer surface of the connecting rod 9. The outer surface of the main gear 10 is meshed and connected with the driven helical gear 11 and the driven spur gear 14. The middle part of the driven helical gear 11 is fixedly connected with an inner seal. The outer surface of the upper end of the inner seal is fixedly connected with an outer frame 12 through the inside of the filter cover 3. The outer surface of the outer frame 12 is provided with a scraper strip 13. The inside of the filter cover 3 is provided with a filter. The output end of the driven spur gear 14 is fixedly installed with a sewage discharge ball valve 15, and the inside of the protective shell is fixedly installed with a ball valve connector 16. The outer surface of the sewage discharge ball valve 15 is movably connected with the outer surface of the ball valve connector 16. Because the motor 8 can drive the driving gear to rotate, the driving gear cooperates with the driven spur gear 14 and the driven bevel gear 11, the driven spur gear 14 cooperates with the sewage discharge ball valve 15, the driving gear drives the driven spur gear 14 to rotate, and the driven spur gear 14 drives the sewage discharge ball valve 15 to switch between opening and closing. The driven bevel gear 11 cooperates with the inner seal, and the inner seal cooperates with the outer frame 12. When the driving gear rotates, the driving gear The driven gear drives the driven bevel gear 11 to rotate, the driven bevel gear 11 drives the inner seal to rotate, the inner seal drives the outer frame 12 to rotate, thereby driving the scraper 13 installed on the outer frame 12 to scrape the impurities stuck on the filter cover 3, the motor 8 drives the outer frame 12 and the ball valve to work synchronously, when the ball valve is opened, under the pressure of the water flow, the internal filter element 17 will be driven to move downward, the internal backwashing spring is in a compressed state, and automatic backwashing is realized, when the motor 8 drives the ball valve to close, the internal filter element 17 moves upward under the elastic force of the backwashing spring, and is in a filtering state, thereby achieving the effect of automatically scraping and washing the outer surface of the filter cover 3 and the filter element 17.

[0027] Working principle: the output end of the motor 8 is fixedly connected with a connecting rod 9 through the inside of the protective shell, and a main gear 10 is fixedly installed on the outer surface of the connecting rod 9. The outer surface of the main gear 10 is meshed with a driven helical gear 11 and a driven spur gear 14. The middle part of the driven helical gear 11 is fixedly connected with an inner seal, and the outer surface of the upper end of the inner seal is fixedly connected with an outer skeleton 12 through the inside of the filter cover 3. The outer surface of the outer skeleton 12 is provided with a scraper strip 13, and a filter element 17 is provided inside the filter cover 3. A sewage ball valve 15 is fixedly installed on the output end of the driven spur gear 14, and a ball valve connector 16 is fixedly installed inside the protective shell. The outer surface of the sewage ball valve 15 is movably connected with the outer surface of the ball valve connector 16. Because the motor 8 can drive the driving gear to rotate, the driving gear cooperates with the driven spur gear 14 and the driven helical gear 11, and the driven spur gear 14 cooperates with the sewage ball valve 15. The driving gear drives the driven spur gear 14 to rotate, and the driven spur gear 14 drives the sewage ball valve 15 to switch between opening and closing. The driven bevel gear 11 cooperates with the inner seal, and the inner seal cooperates with the outer skeleton 12. When the driving gear rotates, the driving gear drives the driven bevel gear 11 to rotate, and the driven bevel gear 11 drives the inner seal to rotate, and the inner seal drives the outer skeleton 12 to rotate, thereby driving the scraper 13 installed on the outer skeleton 12 to scrape and wash the impurities stuck on the filter cover 3. The motor 8 drives the outer skeleton 12 and the ball valve to work synchronously. When the ball valve is opened, under the pressure of the water flow, the internal filter element 17 will be driven to move downward, and the internal backwashing spring is in a compressed state to achieve automatic backwashing. When the motor 8 drives the ball valve to close, the internal filter element 17 moves upward under the elastic force of the backwashing spring and is in a filtering state, thereby achieving the effect of automatically scraping and washing the outer surface of the filter cover 3 and the filter element 17. Compared with the relevant technology, the utility model provides an automatic scraping and washing water purification backwashing pre-filter with automatic scraping and washing, which has the following beneficial effects: thereby achieving the effect of automatically scraping and washing the surface of the filter cover 3 and the filter element 17, and improving the cleaning efficiency.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic scraping and backwashing pre-filter for clean water, comprising a pressure gauge (1) and a motor (8), characterized in that: A water pipe is fixedly mounted on the lower surface of the pressure gauge (1), a valve head (2) is arranged on the outer surface of the water pipe, a filter cover (3) is fixedly mounted on the lower surface of the valve head (2), an outer seal (4) is arranged on the filter cover (3) away from the lower surface of the valve head (2), an inner seal (5) is arranged inside the outer seal (4), a gear cover connecting frame (6) is fixedly mounted on the outer surface of the outer seal (4), a gear cover (7) is arranged on the outer surface of the gear cover connecting frame (6), a protective shell is fixedly connected to the outer surface of the gear cover (7), an output end of the motor (8) is fixedly connected to a connecting rod (9) through the inside of the protective shell, and a main gear (10), the outer surface of the main gear (10) is meshingly connected with a driven helical gear (11) and a driven spur gear (14), the middle part of the driven helical gear (11) is fixedly connected with an inner seal (5), the outer surface of the upper end of the inner seal (5) is fixedly connected with an outer frame (12) through the inside of the filter cover (3), the outer surface of the outer frame (12) is provided with a scraper strip (13), the inside of the filter cover (3) is provided with a filter element (17), the output end of the driven spur gear (14) is fixedly installed with a sewage discharge ball valve (15), the inside of the protective shell is fixedly installed with a ball valve connector (16), and the outer surface of the sewage discharge ball valve (15) is movably connected to the outer surface of the ball valve connector (16); The driven helical gear (11) is arranged inside the gear cover (7) and the gear cover connecting frame (6); The outer surface of the outer frame (12) is provided with a slot, the interior of the slot is movably connected with a scraper strip (13), and the outer surface of the scraper strip (13) is in interference contact with the inner surface of the filter cover (3) and the outer surface of the filter element (17); The inner sealing member (5) is provided with grooves at both the upper and lower ends, and O-rings are provided inside the grooves to seal the outer sealing member (4) and the ball valve connector (16) respectively; A rubber piece is pressed between the gear cover connecting frame (6) and the bottom surface of the filter cover (3), and the friction force F1 generated by the rubber piece is greater than the force F2 exerted on the driven bevel gear (11) when the motor (8) drives it.

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