Lifting type filter with backwashing function

Abstract

The utility model relates to a lifting type filter with a backwashing function, which belongs to the technical field of filter equipment and comprises an outer barrel and a frame, and a filter component is mounted above the frame. The filtering assembly comprises a filtrate collecting pipe and a plurality of filters, the filters are communicated with the filtrate collecting pipe through collecting branch pipes, and the filtrate collecting pipe is in sealed connection with a filtrate outlet in the frame body through a butt flange; the frame body is also provided with a discharging back-flushing pipe, and the filtrate collecting pipe is communicated with the discharging back-flushing pipe through a filtrate outlet; according to the utility model, the discharging back-flushing pipe is arranged, and the filter is reversely flushed by back-flushing water, so that solid impurities on the surface of a filter material can be quickly removed, the machine does not need to be disassembled for manual cleaning, and the cleaning efficiency is greatly improved; the backwashing process can be completed in a short time, so that the downtime is reduced, and the production continuity is guaranteed; the filter is convenient to operate, the outer barrel can be automatically lifted through the lifting air cylinder, maintenance and replacement of the filter assembly are facilitated, and the labor intensity of maintenance is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of lifting filter with backwashing function, belong to filter equipment technical field. BACKGROUND

[0002] The production of medium-chain triglyceride (MCT) needs to go through two key links of decolorization filtration and clarification filtration to remove solid impurities such as clay, activated carbon and catalyst in MCT refining process, so as to ensure the purity and transparency of the product.

[0003] The lifting filter is commonly used in MCT clarification filtration, but the filter material of the existing lifting filter does not have automatic cleaning function. After the filter material is blocked after a period of use, the outer cylinder of the lifting filter needs to be disassembled, and the filter material needs to be cleaned manually to restore its filtering performance. This way is complicated to operate and time-consuming, which seriously affects the production efficiency and continuous operation capacity. SUMMARY

[0004] In view of the above problems in the prior art, the utility model solves the problem of manual cleaning of the filter material of the existing lifting filter after blockage, simplifies the cleaning operation process and shortens the cleaning time of the filter material.

[0005] The lifting filter with backwashing function comprises an outer cylinder and a frame body. The outer cylinder is detachably mounted above the frame body. The outer cylinder and the frame body are in sealing contact after installation. A filter assembly is also mounted above the frame body. The filter assembly is located inside the outer cylinder.

[0006] The filter assembly comprises a filtrate manifold and a plurality of filters. The filters are arranged in a circular array around the filtrate manifold. The filters are connected to the filtrate manifold through a plurality of manifold branches. The filtrate manifold is sealingly connected to a filtrate outlet on the frame body through a butt flange.

[0007] The frame body is also provided with a discharge backflush pipe. The discharge backflush pipe is connected below the filtrate outlet. The filtrate manifold is connected to the discharge backflush pipe through the filtrate outlet. The discharge backflush pipe is provided with a discharge port and a backwashing port. A discharge valve is mounted on the discharge port. A backwashing valve is mounted on the backwashing port. The backwashing valve is connected to an external water source.

[0008] Preferably, the filters are of hollow structure and are provided with porous filter plates on both sides to realize solid-liquid separation. Each set of filters is connected to the filtrate manifold through a plurality of manifold branches to ensure uniform flow of filtrate and uniform coverage of backwashing water on each filter hole during backwashing.

[0009] Preferably, the frame body is provided with a slag discharge port. A slag discharge valve is fixedly connected below the slag discharge port.

[0010] Furthermore, the discharge backflushing pipe is also equipped with an observation window made of transparent glass, which allows for real-time observation of the filtrate color to determine whether filtration is complete.

[0011] Preferably, a cylinder mounting seat is provided on one side of the frame, and a lifting cylinder is fixedly installed above the cylinder mounting seat. A lifting beam is fixedly connected to the first end of the cylinder rod of the lifting cylinder. The lifting beam is connected to the outer cylinder through a lifting ring and is used to drive the outer cylinder to lift and lower, which facilitates internal maintenance and replacement of filter components. The bottom of the frame is provided with casters for easy movement.

[0012] Preferably, the top of the outer cylinder is provided with a feed inlet and a water inlet, and the bottom of the outer cylinder is detachably connected to the frame through several latches.

[0013] The advantages of this utility model compared with the prior art are:

[0014] This invention features a discharge backwash pipe that uses backwash water to flush the filter, quickly removing solid impurities from the filter media surface without requiring manual cleaning, thus significantly improving cleaning efficiency. The backwashing process can be completed in a short time, reducing downtime and ensuring continuous production. This invention is also easy to operate, with a lifting cylinder that automatically lifts the outer cylinder, facilitating maintenance and filter component replacement, and reducing the labor intensity of maintenance. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0016] Figure 2 This is the second structural schematic diagram of this utility model;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 This is a schematic diagram of the filter assembly;

[0019] Figure 5 This is a schematic diagram of the outer cylinder structure;

[0020] Figure 6 This is a structural diagram of the frame.

[0021] In the diagram: 1. Outer cylinder; 11. Feed inlet; 12. Lifting ring; 13. Water inlet; 2. Frame; 21. Discharge backflushing pipe; 22. Filtrate outlet; 23. Slag discharge port; 24. Observation window; 25. Cylinder mounting base; 3. Casters; 4. Lifting cylinder; 41. Lifting beam; 5. Filter assembly; 51. Filter; 52. Filtrate manifold; 521. Manifold branch pipe; 522. Connecting flange; 6. Slag discharge valve; 7. Backflushing valve; 8. Discharge valve. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments.

[0023] like Figures 1-6 As shown, this embodiment is achieved through the following technical solution: it includes an outer cylinder 1 and a frame 2. The outer cylinder 1 is detachably installed on top of the frame 2. After installation, the outer cylinder 1 and the frame 2 are in sealed contact. A filter assembly 5 is also installed on top of the frame 2. The filter assembly 5 is located inside the outer cylinder 1. The filter assembly 5 includes a filtrate manifold 52 and a plurality of filters 51. The filters 51 are arranged in a circumferential array around the filtrate manifold 52. The filters 51 are connected to the filtrate manifold 52 through a manifold branch pipe 521. The filtrate manifold 52 is sealed to the filtrate outlet 22 on the frame 2 through a connecting flange 522.

[0024] The frame 2 is also equipped with a discharge backflushing pipe 21, which is connected below the filtrate outlet 22. The filtrate manifold 52 is connected to the discharge backflushing pipe 21 through the filtrate outlet 22. The discharge backflushing pipe 21 has a discharge port and a backflushing port. A discharge valve 8 is installed on the discharge port, and a backflushing valve 7 is installed on the backflushing port. The backflushing valve 7 is connected to an external water source. The frame 2 is also equipped with a slag discharge port 23, and a slag discharge valve 6 is fixedly connected below the slag discharge port 23.

[0025] In this embodiment, the filter 51 has a hollow structure and porous filter plates are provided on both sides of the filter 51 to achieve solid-liquid separation. Each filter 51 is connected to the filtrate manifold 52 through multiple manifold branches 521 to ensure uniform flow of filtrate and to ensure that backwash water evenly covers each filter hole during backwashing.

[0026] The discharge backflushing pipe 21 is also provided with an observation window 24, which is made of transparent glass, allowing real-time observation of the filtrate color and determination of whether filtration is complete.

[0027] The frame 2 is provided with a cylinder mounting seat 25 on one side, and a lifting cylinder 4 is fixedly installed on the top of the cylinder mounting seat 25. The cylinder rod of the lifting cylinder 4 is fixedly connected to a lifting beam 41. The lifting beam 41 is connected to the outer cylinder 1 through a lifting ring 12 and is used to drive the outer cylinder 1 to lift and lower, which facilitates internal maintenance and replacement of the filter assembly 5. The bottom of the frame 2 is provided with casters 3 for easy movement.

[0028] The outer cylinder 1 is provided with a feed inlet 11 and a water inlet 13 at the top, and the bottom of the outer cylinder 1 is detachably connected to the frame 2 by several latches.

[0029] The working process of this utility model is as follows:

[0030] During normal operation, the discharge valve 8 is open, while the slag discharge valve 6 and the backwash valve 7 are closed. The material to be filtered enters the outer cylinder 1 through the feed inlet 11 under the action of the pressure pump. Due to the continuous delivery of the pressure pump, the material in the outer cylinder accumulates continuously, and the pressure increases accordingly. Under the action of pressure, the material passes through the filter holes on the filter 51, enters the filtrate manifold 52 through the manifold branch pipe 521, and the filtered filtrate flows through the discharge backwash pipe 21 and is finally discharged through the discharge valve 8. Solid impurities in the material are intercepted by the filter 51.

[0031] To reduce material residue in the outer cylinder 1, the pressure pump stops working after all the material has entered the outer cylinder 1. Then, pure water is injected into the outer cylinder 1 through the water inlet 13 to continue pressurizing and filtering the material. Since MCT is immiscible with water and has a color difference (MCT is pale yellow), when the filtrate changes from pale yellow to transparent through the observation window 24, it proves that the material has been completely filtered, and the water injection is stopped at this time.

[0032] When the filter 51 needs to be cleaned, the backwash valve 7 and the slag discharge valve 6 are opened, and the discharge valve 8 is closed. Backwash water is injected through the backwash valve 7 and enters the filtrate manifold 52 along the discharge backwash pipe 21. Then, it enters the interior of the filter 51 through the manifold branch pipe 521 and flows out from the filter holes on both sides of the filter, flushing down the intercepted solid impurities to achieve backwash cleaning. The flushed solid impurities are discharged and collected after passing through the slag discharge port 23 and the slag discharge valve 6.

[0033] When internal maintenance or replacement of filter assembly 5 is required, open the connecting latch between outer cylinder 1 and frame 2, and lift outer cylinder 1 using lifting cylinder 4 to perform maintenance or replacement of filter assembly 5.

Claims

1. A lift-type filter with backwashing function, characterized in that, It includes an outer cylinder (1) and a frame (2). The outer cylinder (1) is detachably installed on top of the frame (2). The outer cylinder (1) and the frame (2) are in sealed contact after installation. A filter assembly (5) is also installed on top of the frame (2). The filter assembly (5) is located inside the outer cylinder (1). The filter assembly (5) includes a filtrate manifold (52) and several filters (51). The filters (51) are arranged in a circumferential array around the filtrate manifold (52). The filters (51) are connected to the filtrate manifold (52) through a manifold branch pipe (521). The filtrate manifold (52) is sealed to the filtrate outlet (22) on the frame (2) through a connecting flange (522). The frame (2) is also provided with a discharge backflushing pipe (21), which is connected to the bottom of the filtrate outlet (22). The filtrate manifold (52) is connected to the discharge backflushing pipe (21) through the filtrate outlet (22). The discharge backflushing pipe (21) is provided with a discharge port and a backflushing port. A discharge valve (8) is installed on the discharge port, and a backflushing valve (7) is installed on the backflushing port. The backflushing valve (7) is connected to an external water source.

2. The lift filter with backwashing function according to claim 1, characterized in that, The filter (51) has a hollow structure and porous filter plates are provided on both sides of the filter (51); each filter (51) is connected to the filtrate manifold (52) through multiple manifold branches (521).

3. The lift filter with backwashing function according to claim 1, characterized in that, The frame (2) is provided with a slag discharge port (23), and a slag discharge valve (6) is fixedly connected below the slag discharge port (23).

4. The lift filter with backwashing function according to claim 1, characterized in that, The discharge backflushing pipe (21) is also provided with an observation window (24).

5. The lift filter with backwashing function according to claim 3, characterized in that, The frame (2) is provided with a cylinder mounting seat (25) on one side, and a lifting cylinder (4) is fixedly installed above the cylinder mounting seat (25). The cylinder rod of the lifting cylinder (4) is fixedly connected to a lifting beam (41), and the lifting beam (41) is hooked to the outer cylinder (1) through a lifting ring (12). The bottom of the frame (2) is provided with casters (3) for easy movement.

6. The lift filter with backwashing function according to claim 1, characterized in that, The top of the outer cylinder (1) is provided with a feed inlet (11) and a water inlet (13), and the bottom of the outer cylinder (1) is detachably connected to the frame (2) by several latches.

Images