Backwash filter

Abstract

The utility model relates to the technical field of backwashing filters, and discloses a backwashing filter which comprises a shell, a bottom plate is arranged below the shell, a filtering device is arranged in the shell, the filtering device comprises a filtering part, and the filtering part is provided with a motor, a mounting rod, a filtering cylinder, a spiral scraper blade, a sleeve, a spring, a sliding ring and a second gasket. According to the backwashing filter, the motor, the mounting rod, the filter cartridge and the spiral scraper are arranged, the filter cartridge is used for filtering a water body, and the motor is started to drive the mounting rod and the spiral scraper, so that the spiral scraper cleans the outer surface of the filter cartridge; by arranging a spray head, a circular pipe, a connecting pipe and a water pump, the water pump is started, filtered water is pumped out, and the water is introduced into the circular pipe through the connecting pipe and sprayed out of the spray head, so that the water penetrates through the outer side of the filter cartridge from the interior of the filter cartridge, impurities adhered to the outer surface of the filter cartridge are flushed down from the filter cartridge, and the impurities float in the water outside the filter cartridge; and impurities can be conveniently discharged along the drain outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of backwashing filters, in particular to a backwashing filter. Background Art

[0002] Backwash filter is a precision equipment that uses filter to directly intercept impurities in water, remove suspended solids and particulate matter in water, reduce turbidity, purify water quality, reduce system dirt, bacteria, algae, rust, etc., to purify water quality and protect the normal operation of other equipment in the system.

[0003] A Chinese patent discloses a backwash filter with a publication number of CN211097838U, comprising a shell, an electric mechanism, a filtering mechanism and a sewage discharge mechanism; the electric mechanism is arranged on the outside of the shell, the filtering mechanism is arranged in a cavity inside the shell, and the sewage discharge mechanism is connected to one side of the filtering mechanism; the filtering mechanism comprises a coarse filter chamber, a fine filter chamber and a clean water chamber, the coarse filter chamber and the fine filter chamber are separated by a flow control plate, and the fine filter chamber and the clean water chamber are separated by a fine filter plate; a water inlet connected to the coarse filter chamber, a sewage discharge port connected to the fine filter chamber and a water outlet connected to the clean water chamber are provided on the shell, and the electric mechanism is connected to the flow control plate; the sewage discharge mechanism comprises a hydraulic cylinder arranged on one side of the clean water chamber and a pressure block connected to the hydraulic cylinder and facing the clean water chamber side. The utility model applies reverse pressure to the water in the clean water chamber through the sewage discharge mechanism so that the dirt on the fine filter plate is discharged along with the water flow, and more dirt is taken away by a small amount of water.

[0004] However, it still includes the following disadvantages: when the device cleans the filter screen, the second choke valve is closed and the third choke valve is opened, so that the water inlet pipe is connected to the sewage outlet, and the impurities on the left side of the fine filter plate are discharged from the sewage outlet, but some impurities are adsorbed on the left end surface of the fine filter plate, which reduces the self-cleaning ability of the device. Therefore, we propose a backwash filter to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to provide a backwash filter to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a backwash filter, comprising a housing, a bottom plate is arranged below the housing, a filter device is arranged inside the housing, and the filter device comprises a filter part;

[0007] The filter part is provided with a motor, a mounting rod, a filter cartridge, a spiral scraper, a sleeve, a spring, a slip ring and a second gasket. The bottom surface of the filter cartridge is fixedly connected to the top surface of the sleeve. A slide groove is provided on the bottom surface of the sleeve. The outer surface of the top of the slip ring extends into the inside of the slide groove and is slidably connected to the inner wall of the slide groove. The outer surface of the slip ring is interference fit with the inner wall of the slide groove.

[0008] A flushing portion is provided below the housing;

[0009] The flushing part includes a nozzle, a circular tube, a connecting pipe and a water pump. The top surface of the water pump is fixedly connected to the bottom surface of the base plate. The top outer surface of the water pump inlet pipe is fixedly penetrated through the bottom surface of the base plate and extends above the base plate. The top outer surface of the connecting pipe is fixedly penetrated through the bottom surface of the base plate and extends above the base plate. The bottom surface of the water pump outlet pipe and the top surface of the left end of the connecting pipe are both provided with flanges.

[0010] A further improvement is that a water inlet pipe is fixedly connected to the left end face of the shell, a water outlet pipe and a sewage pipe are fixedly connected to the bottom face of the base plate, the top of the water outlet pipe is arranged on the inner side of the slip ring, and a solenoid valve is arranged on the sewage pipe. By arranging a filter cartridge, it is convenient to filter the water flow introduced by the water inlet pipe and discharge it from the water outlet pipe.

[0011] A further improvement is that a first gasket is fixedly connected to the top surface of the base plate, and mounting bolts are provided on the shell and the base plate. By providing the first gasket and the mounting bolts, the base plate and the shell are easily connected and installed.

[0012] A further improvement is that the outer surface of the bottom end of the motor output shaft rotates through the top surface of the shell and extends to the inside of the shell through the first bearing, the mounting rod is fixedly sleeved on the outer surface of the motor output shaft, the top surface of the spiral scraper is fixedly connected to the bottom surface of the mounting rod, and the outer surface of the spiral scraper is slidably connected to the outer surface of the filter cartridge. By setting the motor, the mounting rod and the spiral scraper, the motor is started to make the spiral scraper clean the outer surface of the filter cartridge.

[0013] A further improvement is that the top end of the spring is fixedly connected to the inner wall of the sleeve, the bottom end of the spring is fixedly connected to the top surface of the slip ring, and the top surface of the second gasket is fixedly connected to the bottom surface of the slip ring. By arranging the spring, sleeve, slip ring and second gasket, the elastic force of the spring is utilized to make the bottom surface of the second gasket squeeze into contact with the top surface of the base plate.

[0014] A further improvement is that the outer surface of the top end of the connecting pipe rotates through the second bearing to penetrate the bottom surface of the circular tube and is connected to the inside of the circular tube, and the outer surface of the nozzle is fixedly connected to the outer surface of the circular tube. By arranging a water pump, a circular tube, a connecting pipe and a nozzle, the water pump is started to draw out the water passing through the filter cartridge and spray it out from the nozzle, thereby facilitating the separation of impurities adhering to the outer surface of the filter cartridge from the filter cartridge.

[0015] A further improvement is that the outer surface of the bottom end of the motor output shaft rotates through the third bearing to penetrate the top surface of the filter cartridge and extend into the interior of the filter cartridge. The bottom surface of the motor output shaft is fixedly connected to the top surface of the circular tube. The motor is used to drive the circular tube to rotate and drive the nozzle to flush the filter cartridge.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the backwash filter, by arranging a motor, a mounting rod, a filter cartridge, and a spiral scraper, uses the filter cartridge to filter the water body, starts the motor, and the motor drives the mounting rod and the spiral scraper, so that the spiral scraper cleans the outer surface of the filter cartridge; by arranging a nozzle, a circular pipe, a connecting pipe, a water pump and a flange, starts the water pump, extracts the filtered water body, and replaces the water body into the circular pipe through the connecting pipe, and sprays it out from the nozzle, so that the water body passes through the outer side of the filter cartridge from the inside of the filter cartridge, so that the impurities adhered to the outer surface of the filter cartridge are washed off from the filter cartridge, and the impurities are floated in the water body outside the filter cartridge, so that the impurities are discharged along the sewage outlet; by arranging a sleeve, a spring, a slip ring and a second gasket, the elastic force of the spring is used to move the slip ring downward, so that the bottom surface of the second gasket is squeezed and contacted with the top surface of the bottom plate, so that the bottom plate is separated from the shell and the device is assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a sectional view of the three-dimensional structure of the utility model;

[0019] Figure 3 for Figure 2 A magnified view of the structure at center;

[0020] Figure 4 for Figure 2 A magnified view of the structure at B in the middle;

[0021] Figure 5 for Figure 2 Enlarged view of the structure at point C in the middle.

[0022] In the figure: 1 housing, 2 filtering device, 21 filtering part, 22 flushing part, 211 motor, 212 mounting rod, 213 filter cartridge, 215 spiral scraper, 216 sleeve, 217 spring, 218 slip ring, 219 second gasket, 221 nozzle, 222 circular pipe, 223 connecting pipe, 224 water pump, 225 flange, 3 bottom plate, 4 first gasket. 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] See also Figure 1-Figure 5, the utility model provides a technical solution: a backwash filter, comprising a housing 1, a bottom plate 3 is arranged below the housing 1, a filter device 2 is arranged inside the housing 1, and the filter device 2 includes a filter part 21;

[0025] The filter part 21 is provided with a motor 211, a mounting rod 212, a filter cartridge 213, a spiral scraper 215, a sleeve 216, a spring 217, a slip ring 218 and a second gasket 219. The bottom surface of the filter cartridge 213 is fixedly connected to the top surface of the sleeve 216. A slide groove is provided on the bottom surface of the sleeve 216. The outer surface of the top end of the slip ring 218 extends to the inside of the slide groove and is slidably connected to the inner wall of the slide groove. The outer surface of the slip ring 218 is interference fit with the inner wall of the slide groove. The left end surface of the shell 1 is fixedly connected with a water inlet pipe, the bottom surface of the bottom plate 3 is fixedly connected with a water outlet pipe and a sewage pipe, the top of the water outlet pipe is arranged on the inner side of the slip ring 218, the sewage pipe is provided with a solenoid valve, the top surface of the bottom plate 3 is fixedly connected with a first gasket 4, and mounting bolts are provided on the shell 1 and the bottom plate 3;

[0026] The outer surface of the bottom end of the output shaft of the motor 211 rotates through the top surface of the housing 1 and extends to the inside of the housing 1 through the first bearing. The mounting rod 212 is fixedly sleeved on the outer surface of the output shaft of the motor 211. The top surface of the spiral scraper 215 is fixedly connected to the bottom surface of the mounting rod 212. The outer surface of the spiral scraper 215 is slidably connected to the outer surface of the filter cartridge 213. By setting the motor 211, the mounting rod 212, the filter cartridge 213, and the spiral scraper 215, the filter cartridge 213 is used to filter the water body. The motor 211 is started, and the motor 211 drives the mounting rod 212 and the spiral scraper 215, so that the spiral scraper 215 cleans the outer surface of the filter cartridge 213.

[0027] The top of the spring 217 is fixedly connected to the inner wall of the sleeve 216, the bottom of the spring 217 is fixedly connected to the top surface of the slip ring 218, and the top surface of the second gasket 219 is fixedly connected to the bottom surface of the slip ring 218. By arranging the sleeve 216, the spring 217, the slip ring 218 and the second gasket 219, the elastic force of the spring 217 is utilized to move the slip ring 218 downward, so that the bottom surface of the second gasket 219 is pressed and contacted with the top surface of the bottom plate 3, so that the bottom plate 3 is separated from the housing 1 and the device is assembled.

[0028] A flushing portion 22 is provided below the housing 1;

[0029] The flushing part 22 includes a nozzle 221, a circular tube 222, a connecting tube 223 and a water pump 224. The top surface of the water pump 224 is fixedly connected to the bottom surface of the bottom plate 3. The top outer surface of the water inlet pipe of the water pump 224 is fixedly penetrated through the bottom surface of the bottom plate 3 and extends to the top of the bottom plate 3. The top outer surface of the connecting tube 223 is fixedly penetrated through the bottom surface of the bottom plate 3 and extends to the top of the bottom plate 3. The bottom surface of the water outlet pipe of the water pump 224 and the top surface of the left end of the connecting tube 223 are both provided with a flange 225.

[0030] The outer surface of the top end of the connecting pipe 223 rotates through the bottom surface of the circular pipe 222 through the second bearing and is connected to the inside of the circular pipe 222. The outer surface of the nozzle 221 is fixedly connected to the outer surface of the circular pipe 222.

[0031] The outer surface of the bottom end of the output shaft of the motor 211 rotates through the third bearing to penetrate the top surface of the filter cartridge 213 and extend into the interior of the filter cartridge 213. The bottom surface of the output shaft of the motor 211 is fixedly connected to the top surface of the circular tube 222 by arranging a nozzle 221, a circular tube 222, a connecting pipe 223, a water pump 224 and a flange 225. The water pump 224 is started to extract the filtered water, and the water is replaced into the interior of the circular tube 222 through the connecting pipe 223 and sprayed out from the nozzle 221, so that the water passes through the outside of the filter cartridge 213 from the inside of the filter cartridge 213, and the impurities adhered to the outer surface of the filter cartridge 213 are washed off from the filter cartridge 213, and the impurities float in the water outside the filter cartridge 213, so that the impurities are discharged along the sewage outlet.

[0032] When in use, water is introduced into the shell 1 from the water inlet pipe, the water passes through the filter cartridge 213, and the filtered water is discharged from the water outlet pipe. At the same time, impurities adhere to the outer surface of the filter cartridge 216. The water pump 224 is started, and the water pump 224 extracts the filtered water, and introduces it into the circular tube 222 along the connecting pipe 223, and sprays it out from the nozzle 221. The water passes through the inner wall of the filter cartridge 213 to the outside of the filter cartridge 213, and the water impacts the impurities adhered to the outer surface of the filter cartridge 213, so that the impurities float in the water outside the filter cartridge 213. The motor 211 is started, and the solenoid valve on the sewage pipe is opened. The output shaft of the motor 211 drives the mounting rod 212 and the spiral scraper 215 to rotate, pushing the impurities downward, and the impurities are discharged from the sewage pipe along with the water.

[0033] Although the 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. A backwash filter, comprising a housing (1), characterized in that: A bottom plate (3) is arranged below the housing (1), a filter device (2) is arranged inside the housing (1), and the filter device (2) comprises a filter portion (21); The filter portion (21) is provided with a motor (211), a mounting rod (212), a filter cartridge (213), a spiral scraper (215), a sleeve (216), a spring (217), a slip ring (218) and a second gasket (219); the bottom surface of the filter cartridge (213) is fixedly connected to the top surface of the sleeve (216); the bottom surface of the sleeve (216) is provided with a slide groove; the top outer surface of the slip ring (218) extends into the interior of the slide groove and is slidably connected to the inner wall of the slide groove; the outer surface of the slip ring (218) is interference fit with the inner wall of the slide groove; A flushing portion (22) is provided below the housing (1); The flushing portion (22) comprises a spray head (221), a circular tube (222), a connecting tube (223) and a water pump (224); the top surface of the water pump (224) is fixedly connected to the bottom surface of the bottom plate (3); the top outer surface of the water inlet pipe of the water pump (224) is fixedly penetrated through the bottom surface of the bottom plate (3) and extends to above the bottom plate (3); the top outer surface of the connecting tube (223) is fixedly penetrated through the bottom surface of the bottom plate (3) and extends to above the bottom plate (3); the bottom surface of the water outlet pipe of the water pump (224) and the top surface of the left end of the connecting tube (223) are both provided with a flange (225).

2. A backwash filter according to claim 1, characterized in that: The left end surface of the shell (1) is fixedly connected with a water inlet pipe, the bottom surface of the bottom plate (3) is fixedly connected with a water outlet pipe and a sewage pipe, the top of the water outlet pipe is arranged on the inner side of the slip ring (218), and the sewage pipe is provided with a solenoid valve.

3. A backwash filter according to claim 1, characterized in that: A first gasket (4) is fixedly connected to the top surface of the bottom plate (3), and mounting bolts are provided on the shell (1) and the bottom plate (3).

4. A backwash filter according to claim 1, characterized in that: The outer surface of the bottom end of the output shaft of the motor (211) rotates through the top surface of the housing (1) through the first bearing and extends into the interior of the housing (1); the mounting rod (212) is fixedly sleeved on the outer surface of the output shaft of the motor (211); the top surface of the spiral scraper (215) is fixedly connected to the bottom surface of the mounting rod (212); and the outer surface of the spiral scraper (215) is slidably connected to the outer surface of the filter cartridge (213).

5. A backwash filter according to claim 1, characterized in that: The top end of the spring (217) is fixedly connected to the inner wall of the sleeve (216), the bottom end of the spring (217) is fixedly connected to the top surface of the slip ring (218), and the top surface of the second gasket (219) is fixedly connected to the bottom surface of the slip ring (218).

6. A backwash filter according to claim 1, characterized in that: The outer surface of the top end of the connecting tube (223) rotates through the bottom surface of the circular tube (222) via a second bearing and is connected to the inside of the circular tube (222); the outer surface of the nozzle (221) is fixedly connected to the outer surface of the circular tube (222).

7. A backwash filter according to claim 1, characterized in that: The outer surface of the bottom end of the output shaft of the motor (211) rotates through the top surface of the filter cartridge (213) via a third bearing and extends into the interior of the filter cartridge (213), and the bottom surface of the output shaft of the motor (211) is fixedly connected to the top surface of the circular tube (222).

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