CN210409726U

CN210409726U - Numerical control opposite-nozzle type backwashing self-cleaning filter

Info

Publication number: CN210409726U
Application number: CN201921321043.4U
Authority: CN
Inventors: 叶保良; 郭鹏
Original assignee: Zibo Yujiang Industry Co ltd
Current assignee: Zibo Yujiang Industry Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-04-28
Anticipated expiration: 2029-08-14

Abstract

The utility model relates to the technical field of filters, in particular to a numerical control opposite-nozzle type backwashing self-cleaning filter, which comprises a cylindrical shell, wherein a filter screen is arranged in the cylindrical shell, a partition plate is arranged at the upper side in the cylindrical shell, a sewage discharge cavity is formed between the cylindrical shell and the partition plate, a back filter cavity is formed between the cylindrical shell and the filter screen, a front filter cavity is formed in the filter screen, the front filter cavity and the sewage discharge cavity are separated by the partition plate, a hollow rotor is arranged in the middle of the cylindrical shell, a transmission device is arranged at the outer side of the top of the cylindrical shell, the transmission device is in transmission connection with the hollow rotor, the hollow interior of the hollow rotor is hollow, one side of the upper; the utility model discloses numerical control design is advanced, and the self-cleaning effect of back flush is obvious, and is safe and stable, need not manual operation, and the cycle length is long, has obtained general user's approval. And the filter screen does not need to be disassembled for cleaning, so that the backwashing function can be realized while filtering, and the manpower and material resources are saved.

Description

Numerical control opposite-nozzle type backwashing self-cleaning filter

Technical Field

The utility model relates to the technical field of filters, concretely relates to self-cleaning filter of numerical control counter-nozzle type back flush.

Background

At present, the backwashing self-cleaning filter is widely applied to the industries of petrochemical industry, medicine, sulfur production, water treatment process systems and the like. The filter screen is one of indispensable equipment in the industries, the existing backwashing self-cleaning filter generally has the defect of poor self-cleaning effect, the filter screen is usually disassembled to be cleaned, and the filter screen cannot be cleaned in the running process at the same time, so that the investment of manpower and material resources is increased to a great extent.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the technical problem, the utility model aims to provide a: the numerical control opposite-nozzle type backwashing self-cleaning filter is long in operation time, good in self-cleaning effect, free of disassembling and cleaning of the filter element and capable of saving manpower and material resources.

The utility model discloses a solve the technical scheme that its technical problem adopted and do:

numerical control is to self-cleaning filter of mouth formula back flush, including the barrel, the lower part of barrel sets up the entrance, and the lateral part of barrel sets up the export, and the inside of barrel sets up the filter screen, and the inside upside of barrel sets up the baffle, form the blowdown chamber between barrel and the baffle, form between barrel and the filter screen and strain the back chamber, the inside of filter screen forms strains the ante chamber, strains the ante chamber and passes through baffle looks interval with the blowdown chamber, strain the ante chamber and be linked together with the entrance, strain the back chamber and be linked together with the export, the middle part of barrel sets up hollow rotor, and the outside at barrel top sets up transmission, transmission is connected with hollow rotor transmission, hollow rotor's inside cavity, one side on hollow rotor upper portion sets up the through-hole, and hollow rotor's the outside sets up a plurality of blowdown mouths, and the outside.

During the filtration, the medium gets into the inlet chamber by the entry before straining, and the medium gets into the preceding chamber of straining through the sediment, filters through the filter screen, gets into and strains the back chamber and via the export discharge, and here is because the pressure of straining the preceding chamber is greater than the pressure of straining the back chamber, therefore can guarantee that the medium flows into by straining the preceding chamber of straining and strain the back chamber through the filter screen.

During back flushing, the blowoff valve is automatically opened, the filtered cavity medium backflushes to the blowoff nozzle at the position of the hollow rotor through the filter screen, the blowoff nozzle is tightly attached to the surface of the filter screen through the thrust of a spring, the difference value of the pressure of the filtered cavity medium and the outlet pressure of the blowoff valve is used as backflushing power, the backflushing power is directly discharged into the blowoff cavity through the cavity in the hollow rotor and the through hole and is discharged by the blowoff valve, and the blowoff valve is automatically closed after the backflushing is finished. In the process, the filter screen can be comprehensively backwashed in a certain range by the limitation of the limit switch through the lifting of the lifting screw rod, impurities in media precipitate in an inlet cavity when the pre-filter cavity runs for a long time, the impurities can be discharged by the slag discharge valve in a set period, and meanwhile, the inlet cavity is provided with a sight glass and can also be directly discharged manually on site.

Preferably, the sewage discharge nozzle is positioned in the front filtering cavity and is divided into a plurality of sewage discharge nozzles which are uniformly distributed, so that the filter screen can be cleaned comprehensively.

Preferably, the through hole is located the blowdown intracavity, and one side in blowdown chamber sets up the blowoff valve, and one side in entrance chamber sets up slag discharging valve and sight glass, but the observation of being convenient for, but on-the-spot manual operation.

Preferably, the filter screen is in a circumferential cylinder shape, and is fixed in an upper and lower sealing manner by adopting a screen mesh, a framework and a sintering net. The working temperature is-30 ℃ to 200 ℃, and the precision is 5mm to 5 u.

Preferably, the transmission device comprises a servo motor and a reduction gearbox, the motor is respectively connected with the hollow rotor and the lifting screw rod through a hexagonal shaft, the motor is externally connected with a PLC (programmable logic controller), and the running speed of the hollow rotor can be adjusted at any time according to different filter media. According to the size of the cylinder, the vertical lifting height of the screw rod can be freely set. The opening time of the sewage draining valve can be optimized when the filter media are different and the back washing time is different. The discharge time of the slag discharging valve is set according to different filter media and different sediments in the inlet cavity.

Preferably, limit switch and limiting alarm check ring are respectively arranged at the upper end of the gearbox, the limit switch is divided into an upper group and a lower group, the limiting alarm check ring is located between the two groups of limit switches, and when the limiting alarm check ring touches the limit switch, an alarm can be sent out.

Preferably, the pre-filter cavity and the post-filter cavity are respectively provided with a differential pressure gauge, the differential pressure gauges are electrically connected with the PLC, when the index of the differential pressure gauge is larger than or equal to 0.05MPa, the back washing system is automatically started, when the upper dead point and the lower dead point are in failure, the automatic alarm is stopped, and the PLC numerical control operation system is divided into a field and an operation room for observing operation and use at the same time.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses numerical control design is advanced, and the self-cleaning effect of back flush is obvious, and is safe and stable, need not manual operation, and the cycle length is long, has obtained general user's approval. The filter screen does not need to be detached for cleaning, the backwashing function can be realized while filtering, manpower and material resources are saved, and the effect on a sewage treatment and regeneration device of a water supply and drainage plant, a water supply device of a power plant boiler and the like is remarkable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. an inlet chamber; 2. a pre-filter chamber; 3. an outlet; 4. a post-filter cavity; 5. a blowdown chamber; 6. a servo motor; 7. a reduction gearbox; 8. a limit switch; 9. a limit alarm check ring; 10. lifting a screw rod; 11. a through hole; 12. a blowoff valve; 13. a partition plate; 14. a spring; 15. a sewage draining nozzle; 16. a filter screen; 17. a hollow rotor; 18. a barrel; 19. a slag discharge valve; 20. a sight glass.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings:

example 1

As shown in figure 1, the utility model relates to a numerical control counter-nozzle type backwashing self-cleaning filter, which comprises a cylinder body 18, an inlet cavity 1 is arranged at the lower part of the cylinder body 18, an outlet 3 is arranged at the side part of the cylinder body 18, connecting flanges are arranged at the inlet cavity 1 and the outlet 3, a filter screen 16 is arranged in the cylinder body 18, a partition plate 13 is arranged at the upper side in the cylinder body 18, a sewage discharge cavity 5 is formed between the cylinder body 18 and the partition plate 13, a post-filter cavity 4 is formed between the cylinder body 18 and the filter screen, a pre-filter cavity 2 is formed in the filter screen, the pre-filter cavity 2 and the sewage discharge cavity 5 are separated by the partition plate 13, specifically, the filler is sealed by the partition plate 13 to form two cavities, the hollow rotor 17 is ensured to normally rotate, the axis of the hollow rotor 17 rotates and is sealed when the hollow rotor goes up and down, the pressure of the sewage discharge cavity 5 is, the middle part of barrel 18 sets up hollow rotor 17, and the outside at barrel 18 top sets up transmission, transmission is connected with hollow rotor 17 transmission, hollow rotor 17's inside cavity, one side on hollow rotor 17 upper portion sets up through-hole 11, through-hole 11 is located blowdown chamber 5, and one side of blowdown chamber 5 sets up blowoff valve 12, and one side of entrance 1 sets up slag-off valve 19 and sight glass 20, is convenient for observe, but on-the-spot manual operation. The outside of hollow rotor 17 sets up a plurality of blowdown mouths 15, and the outside suit spring 14 of blowdown mouth 15, filter screen 16 is hugged closely to the one end of blowdown mouth 15, blowdown mouth 15 is located and strains preceding chamber 2, divide into a plurality ofly, evenly arranges, helps carrying out comprehensive washing to filter screen 16.

Wherein, the filter screen 16 is a circumference cylinder shape, adopts a screen mesh, a framework and a sintering net, and is sealed and fixed up and down. The working temperature is-30 ℃ to 200 ℃, and the precision is 5mm to 5 u.

In addition, the transmission device comprises a servo motor 6 and a reduction gearbox 7, the motor is respectively connected with the hollow rotor 17 and the lifting screw rod 10 through a hexagonal shaft, the motor is externally connected with a PLC (programmable logic controller), and the running speed of the hollow rotor 17 can be adjusted at any time according to different filter media. The vertical lifting height of the screw rod can be freely set according to the size of the cylinder 18. The opening time of the blowoff valve 12 can be optimized by different filter media and different backwashing time. Setting the discharge time of the slag discharge valve 19 according to different filter media and different sediments in the inlet cavity 1; the upper end of the gearbox is respectively provided with a limit switch 8 and a limit alarm check ring 9, the limit switches 8 are divided into an upper group and a lower group, the limit alarm check ring 9 is positioned between the two groups of limit switches 8, and when the limit alarm check ring 9 touches the limit switches 8, an alarm can be given; differential pressure meters are respectively arranged in the pre-filtering cavity 2 and the post-filtering cavity 4 and are electrically connected with a PLC (programmable logic controller), when the index of the differential pressure meter is more than or equal to 0.05MPa, the backwashing system is automatically started, when upper and lower dead points break down, the automatic alarm is stopped, and the PLC numerical control operating system is divided into a field and an operating room for observing operation and use at the same time.

The utility model discloses a concrete use:

during the filtration, the medium gets into inlet chamber 1 by the entry before straining, and the medium gets into before straining chamber 2 through the sediment, filters through filter screen 16, gets into and strains back chamber 4 and discharge through export 3, and here because the pressure of straining preceding chamber 2 is greater than the pressure of straining back chamber 4, therefore can guarantee that the medium flows into after straining chamber 4 through filter screen 16 by straining preceding chamber 2.

During back flushing, the blow-down valve 12 is automatically opened, the medium in the filtered cavity 4 backflushes the blow-down nozzle 15 at the position of the hollow rotor 17 through the filter screen 16, the blow-down nozzle 15 is tightly attached to the surface of the filter screen 16 by the thrust of the spring 14, the difference value between the medium pressure in the filtered cavity 4 and the pressure at the outlet 3 of the blow-down valve 12 is used as backflush power, the medium is directly discharged into the blow-down cavity 5 through the cavity in the hollow rotor 17 and the through hole 11 and is discharged from the blow-down valve 12, and the blow-down valve 12 is automatically closed after the. In the process, the filter screen 16 can be subjected to comprehensive backwashing within a certain range by the limitation of the limit switch 8 through the lifting of the lifting screw rod 10, impurities in media are precipitated in the inlet cavity 1 when the pre-filter cavity 2 runs for a long time, the impurities can be discharged by the slag discharge valve 19 in a set period, and meanwhile, the inlet cavity 1 is provided with the sight glass 20 and can also be directly discharged manually on site.

Claims

1. The utility model provides a self-cleaning filter of numerical control counter-jet back flush, includes barrel (18), and the lower part of barrel (18) sets up entrance chamber (1), and the lateral part of barrel (18) sets up export (3), and characterized in that, the inside of barrel (18) sets up filter screen (16), and the inside upside of barrel (18) sets up baffle (13), form blowdown chamber (5) between barrel (18) and baffle (13), form between barrel (18) and the filter screen and strain back chamber (4), the inside of filter screen forms and strains preceding chamber (2), strains preceding chamber (2) and passes through baffle (13) looks interval with blowdown chamber (5), it is linked together to strain preceding chamber (2) and entrance chamber (1), strains back chamber (4) and export (3) and is linked together, and the middle part of barrel (18) sets up hollow rotor (17), and the outside at barrel (18) top sets up transmission, transmission is connected with hollow rotor (17) transmission, the hollow rotor (17) is hollow, a through hole (11) is formed in one side of the upper portion of the hollow rotor (17), a plurality of sewage discharging nozzles (15) are arranged on the outer side of the hollow rotor (17), springs (14) are sleeved on the outer sides of the sewage discharging nozzles (15), and one end of each sewage discharging nozzle (15) is tightly attached to a filter screen (16).

2. The numerical control counter-nozzle type backwashing self-cleaning filter of claim 1, wherein the blowdown nozzle (15) is positioned in the pre-filter cavity (2) and is divided into a plurality of parts which are uniformly distributed.

3. The numerical control counter-mouth type backwashing self-cleaning filter of claim 1, wherein the through hole (11) is positioned in the sewage cavity (5), a sewage valve (12) is arranged at one side of the sewage cavity (5), and a slag discharge valve (19) and a sight glass (20) are arranged at one side of the inlet cavity (1).

4. The numerical control counter-nozzle type backwashing self-cleaning filter of claim 1, wherein the filter screen (16) is of a circumferential cylinder shape, and a screen mesh, a framework and a sintering mesh are adopted.

5. The numerical control counter-nozzle type backwashing self-cleaning filter of claim 1, wherein the transmission device comprises a servo motor (6) and a reduction box (7), the motor is respectively connected with the hollow rotor (17) and the lifting screw (10) through a hexagonal shaft, and the motor is externally connected with a PLC controller.

6. The numerical control counter-nozzle type backwashing self-cleaning filter of claim 5, wherein the upper end of the gearbox is respectively provided with a limit switch (8) and a limit alarm check ring (9).

7. The numerical control counter-nozzle type backwashing self-cleaning filter of claim 5, wherein differential pressure gauges are respectively arranged in the pre-filter cavity (2) and the post-filter cavity (4), and the differential pressure gauges are electrically connected with a PLC (programmable logic controller).