CN211724872U

CN211724872U - Back-flushing anti-blocking device of precision filter

Info

Publication number: CN211724872U
Application number: CN201922330781.1U
Authority: CN
Inventors: 赵利强; 费国祥; 沈国江; 王建平
Original assignee: Zhejiang Daneng Textile Printing And Dyeing Co ltd
Current assignee: Zhejiang Daneng Textile Printing And Dyeing Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-10-23
Anticipated expiration: 2029-12-23

Abstract

The utility model belongs to the technical field of the sewage treatment technique and specifically relates to a stifled device is prevented to precision filter's recoil, including an inclosed jar body, be provided with the one deck baffle inside the body, it crosses the filter bag to be provided with a plurality of on the baffle, be provided with the inlet tube on the lateral wall that the cavity of jar body below corresponds, inside the cavity of inlet tube extension to baffle top, be provided with the water intaking valve on the inlet tube, be provided with the recoil pipe on the jar body that the cavity corresponds below the baffle, be provided with the recoil valve on the recoil pipe, be provided with the outlet pipe on the jar side wall that the cavity corresponds below the baffle, be provided with the outlet valve on the outlet pipe, be provided with the blow off pipe on the jar side wall that the cavity corresponds above the baffle, be. The utility model provides a stifled device is prevented in precision filter's back flush, it can effectively realize the back flush to crossing the filter bag through reasonable structural design to ensure the life and the performance of crossing the filter bag.

Description

Back-flushing anti-blocking device of precision filter

Technical Field

The utility model belongs to the technical field of sewage treatment technique and specifically relates to a stifled device is prevented to precision filter's recoil.

Background

In the printing and dyeing industry, the production wastewater needs to be recycled. At present, many enterprises can treat sewage and then use reverse osmosis membranes to filter. Because reverse osmosis membrane filtration is costly and has a limited service life, it is necessary to filter suspended solids in the water before the water enters the reverse osmosis membrane filtration by using a precision filter to prolong the service life of the reverse osmosis membrane. However, in the actual use process, the suspended matters in the precision filter can be quickly accumulated on the filter bag, so that the filter bag is blocked, the filter bag needs to be frequently replaced, and the treatment efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical defects and providing a backflushing anti-blocking device of a precision filter, which can backflush suspended matters on a filter bag.

In order to achieve the purpose, the utility model relates to a backflushing anti-blocking device of a precision filter, which comprises a closed tank body, a layer of baffle is arranged in the pipe body, the baffle divides the tank body into an upper cavity and a lower cavity which are independent, a plurality of filter bags are arranged on the baffle, the filter bags are positioned in the lower cavity, the inner parts of the filter bags are communicated with the upper cavity, a water inlet pipe is arranged on the side wall corresponding to the lower cavity of the tank body, the water inlet pipe extends into the upper cavity of the baffle, a water inlet valve is arranged on the water inlet pipe, a backflushing pipe is arranged on the tank body corresponding to the lower cavity of the baffle, a backflushing valve is arranged on the backflushing pipe, a water outlet pipe is arranged on the side wall of the tank body corresponding to the lower cavity of the baffle, a water outlet valve is arranged on the water outlet pipe, a supporting framework is arranged inside each filter bag.

Above-mentioned technical scheme, in the normal use process, blowoff valve, recoil valve are closed, and the inlet tube will wait to cross the water and carry to the cavity of the inside baffle top of jar, utilize water pressure to filter water from the filter bag in, and the water after the filtration gets into the cavity of baffle below to export reverse osmosis membrane from the outlet pipe and handle. After a certain period of filtration, more suspended matters are accumulated in the filter bag, so that the filter bag is blocked. At the moment, the water inlet valve and the water outlet valve can be closed, the backflushing valve and the blow-down valve are opened at the same time, high-pressure clean water is introduced into the backflushing pipe, so that water flow in the filter bag reversely flows, suspended matters in the filter bag are flushed away, and finally the water is discharged from the blow-down pipe. In the process of high-pressure reverse flushing, the filter bag is not combined because the support framework is arranged in the filter bag, the reverse flushing effect on suspended matters in the filter bag is good, and the filter bag can be quickly and cleanly flushed.

The utility model discloses a filter bag, including support frame, bracing piece, connecting rod and bracing piece, the support frame includes a bracing piece, and the interval is provided with a plurality of support ring on the bracing piece, the bracing piece is located inside the support ring, and through connecting rod fixed connection between support ring and the bracing piece, is provided with the spacing ring in the upper end of bracing piece, also through connecting rod fixed connection between spacing ring and the bracing piece, the diameter of support ring is less than the diameter of crossing the filter bag, and the diameter of spacing ring is greater than the diameter of crossing the filter bag. The design of the structure can completely support the filter bag, so that the stability of the filtering effect and the backwashing effect can be ensured no matter in the filtering process or the backwashing process, the backwashing time is shortened, the efficiency is improved, the flow of water passing through the filter bag cannot be influenced, and the reliability is high.

The top of the support rod is provided with a support ball. In the back washing process, when the top of the supporting rod is contacted with the top of the tank body, the supporting ball is also contacted, so that the safety is high.

The utility model provides a stifled device is prevented in precision filter's back flush, it can effectively realize the back flush to crossing the filter bag through reasonable structural design to ensure the life and the performance of crossing the filter bag.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the supporting framework of the present invention.

Detailed Description

The invention is further described by the following embodiments in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 1, the backflushing anti-blocking device of a precision filter described in this embodiment includes a closed tank 1, a partition plate 2 is disposed inside the tank, the tank 1 is divided into two independent upper and lower chambers by the partition plate 2, a plurality of filter bags 3 are disposed on the partition plate 2, the filter bags 3 are disposed in the lower chamber, the filter bags 3 are communicated with the upper chamber, a water inlet pipe 6 is disposed on the side wall corresponding to the lower chamber of the tank 1, the water inlet pipe 6 extends into the upper chamber of the partition plate 2, a water inlet valve 7 is disposed on the water inlet pipe 6, a backflushing pipe 4 is disposed on the tank 1 corresponding to the lower chamber of the partition plate 2, a backflushing valve 5 is disposed on the backflushing pipe 4, a water outlet pipe 8 is disposed on the side wall of the tank 1 corresponding to the lower chamber of the partition plate 2, a water outlet valve 9 is disposed on the water outlet pipe 8, a drain pipe 10, a blow-off valve 11 is arranged on the blow-off pipe 10, and a supporting framework 12 is arranged inside each filter bag 3.

As shown in fig. 2, the supporting framework 12 includes a supporting rod 13, a plurality of supporting rings 14 are arranged on the supporting rod 13 at intervals, the supporting rod 13 is located inside the supporting ring 14, the supporting ring 14 and the supporting rod 13 are fixedly connected through a connecting rod 17, a limiting ring 15 is arranged at the upper end of the supporting rod 13, the limiting ring 15 and the supporting rod 13 are also fixedly connected through a connecting rod 17, the diameter of the supporting ring 14 is smaller than that of the filtering bag 3, the diameter of the limiting ring 15 is larger than that of the filtering bag 3, and the upper end of the supporting rod 13 below the limiting ring 15 is smaller than the depth of the filtering bag 3. A support ball 16 is provided on top of the support bar 13.

Claims

1. A backflushing anti-blocking device of a precision filter is characterized in that: the water inlet valve is arranged on the water inlet pipe, a backwashing pipe is arranged on the tank body corresponding to the cavity below the partition plate, a backwashing valve is arranged on the backwashing pipe, a water outlet pipe is arranged on the tank body side wall corresponding to the cavity below the partition plate, a water outlet valve is arranged on the water outlet pipe, a sewage discharge pipe is arranged on the tank body side wall corresponding to the cavity above the partition plate, a sewage discharge valve is arranged on the sewage discharge pipe, and a support framework is arranged in each filter bag.

2. A backflushing anti-clogging device for a precision filter according to claim 1, wherein: the utility model discloses a filter bag, including support frame, bracing piece, connecting rod and bracing piece, the support frame includes a bracing piece, and the interval is provided with a plurality of support ring on the bracing piece, the bracing piece is located inside the support ring, and through connecting rod fixed connection between support ring and the bracing piece, is provided with the spacing ring in the upper end of bracing piece, also through connecting rod fixed connection between spacing ring and the bracing piece, the diameter of support ring is less than the diameter of crossing the filter bag, and the diameter of spacing ring is greater than the diameter of crossing the filter bag.

3. A backflushing anti-clogging device for a precision filter according to claim 2, wherein: the top of the support rod is provided with a support ball.