Self-cleaning cloth bag filtering tank

Abstract

The utility model relates to a self-cleaning cloth bag filtering tank, which belongs to the technical field of filtering equipment and comprises a filtering tank body, a filtering cloth bag is arranged in the filtering tank body, and a pressing plate connected with the filtering tank body is arranged at the upper end of the filtering cloth bag. A liquid inlet pipeline which is positioned below the pressing plate and is communicated with the filtering cloth bag is arranged on the outer wall of the filtering tank body, a liquid outlet pipeline which is positioned above the pressing plate and is communicated with the filtering cloth bag is arranged on the outer wall of the filtering tank body, and a pressure difference alarm which is lower than the liquid inlet pipeline and is communicated with the filtering tank body is arranged on the other side of the filtering tank body; a cover plate is arranged at the upper end of the filtering tank body, and an air inlet pipeline which is communicated with the differential pressure alarm through a circuit and is communicated with the filtering cloth bag is arranged on the cover plate. The device has the characteristics of compact structure, good operation stability and high efficiency. And gas is filled into the tank body for back flushing after pressure difference alarming, so that the problem that the filtering is influenced by the blockage of the cloth bag is solved. The frequency of replacing the filtering cloth bag is reduced and the filtering effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter equipment technical field, concretely relates to a self-cleaning cloth bag filter tank. BACKGROUND

[0002] Cloth bag filter is one kind of filter equipment that appears early. Now has become one of filter equipment that industrial department uses in large quantities. The filtering mechanism of cloth bag filter is when the gas containing dust (or solid particle) passes through filter material layer, only let the gas penetrate past, and the dust is detained on the filter material surface, but common cloth bag filter is low in work efficiency, and the inside of cloth bag filter is usually filtered through filter bag.

[0003] When the filter bag is blocked, the use of the cloth bag filter needs to be stopped to disassemble and clean the filter bag, thereby affecting the normal use of the cloth bag filter and reducing the work efficiency, and the process of disassembling the filter bag is complex and troublesome, greatly increasing the work load, affecting the dust removal performance of the filter bag, greatly reducing the practicality, and bringing great inconvenience to the user.

[0004] The bag filter is a multi-purpose filter equipment with novel structure, small size, simple and flexible operation, energy saving, high efficiency, closed work and strong applicability. The bag filter is a new type of filtering system. The inside of the bag filter is supported by a metal mesh basket, liquid flows into the inlet, and after being filtered by the filter bag, the liquid flows out of the outlet, and impurities are intercepted in the filter bag. After replacing the filter bag, the bag filter can continue to be used. SUMMARY

[0005] The utility model mainly solves the insufficient of prior art, provides a self-cleaning cloth bag filter tank, it has compact structure, good and efficient characteristics of stable operation. After differential pressure alarm, the gas is filled into the tank body to backflush, solve the problem of cloth bag blockage affecting filtration. Reduce the frequency of replacing filter cloth bag, improve the filtering effect.

[0006] The above technical problems of the utility model are mainly solved by the following technical schemes:

[0007] A self-cleaning cloth bag filter tank, comprising a filter tank body, a filter cloth bag is arranged in the filter tank body, a pressing plate is arranged on the upper end of the filter cloth bag and connected with the filter tank body, a liquid inlet pipeline is arranged on the outer wall of the filter tank body below the pressing plate and connected with the filter cloth bag, a liquid outlet pipeline is arranged on the outer wall of the filter tank body above the pressing plate and connected with the filter cloth bag, a differential pressure alarm is arranged on the other side of the filter tank body below the liquid inlet pipeline and connected with the filter tank body, a cover plate is arranged on the upper end of the filter tank body, an air inlet pipeline is arranged on the cover plate and connected with the differential pressure alarm and the filter cloth bag.

[0008] The filter bag is used as the filter medium to remove the solid particles in the liquid. The particles are intercepted on the surface of the filter bag to form a sludge layer, and the clean liquid flows out through the pores of the filter bag. The filter bag is blocked by monitoring the value change of the differential pressure alarm, and the filter tank is filled with gas through the air inlet pipeline to make the filter bag shed the attachments and discharge the residual liquid from the contaminated liquid pipeline.

[0009] Preferably, the filter bag is integrated in a multi-bag structure to increase the filterable flow.

[0010] Preferably, the upper end of the cover plate is provided with a pressure gauge connected with the filter tank.

[0011] Preferably, the two ends of the cover plate are provided with handles, and the handles are provided with lifting rings fixed on the two sides of the cover plate in a threaded sleeve joint manner. When the filter bag needs to be replaced, the cover plate is opened through the handle. The lifting rings are used for lifting when the equipment needs to be moved and assembled.

[0012] Preferably, the lower part of the filter tank is provided with a contaminated liquid pipeline connected with the lower part of the filter bag, and the contaminated liquid pipeline is provided with a blowdown valve.

[0013] The self-cleaning filter tank with a filter bag can achieve the following effects:

[0014] The self-cleaning filter tank with a filter bag provided by the present application has the characteristics of compact structure, good running stability and high efficiency compared with the prior art. The gas is filled into the tank for backflushing after the differential pressure alarm, which solves the problem of filter bag blockage affecting the filtration. The frequency of replacing the filter bag is reduced, and the filtration effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the present application.

[0016] Figure 2 is a side view structural schematic view of the present application.

[0017] Figure 3 is a structural sectional view of the present application.

[0018] Figure 4 is a top view structural schematic view of the present application.

[0019] In the figure: filter tank 1, cover plate 2, pressure gauge 3, handle 4, air inlet pipeline 5, lifting ring 6, liquid inlet pipeline 7, blowdown valve 8, liquid outlet pipeline 9, contaminated liquid pipeline 10, differential pressure alarm 11, pressing plate 12, filter bag 13. DETAILED DESCRIPTION

[0020] The technical scheme of the present application will be further specifically described below by combining with the drawings.

[0021] Example: Figures 1-4 As shown, a self-cleaning bag filter canister includes a filter canister 1, inside which a filter bag 13 is provided. The filter bag 13 adopts a multi-bag integrated structure. A pressure plate 12 connected to the filter canister 1 is provided at the upper end of the filter bag 13. An inlet pipe 7, located below the pressure plate 12 and connected to the filter bag 13, is provided on the outer wall of the filter canister 1. An outlet pipe 9, located above the pressure plate 12 and connected to the filter bag 13, is provided on the outer wall of the filter canister 1. A differential pressure alarm 11, lower than the inlet pipe 7 and connected to the filter canister 1, is provided on the other side of the filter canister 1. A cover plate 2 is provided at the upper end of the filter canister 1. An air inlet pipe 5, electrically connected to the differential pressure alarm 11 and the filter bag 13, is provided on the cover plate 2. A pressure gauge 3, connected to the filter canister 1, is provided at the upper end of the cover plate 2. The pressure gauge 3 is electrically connected to the differential pressure alarm 11. The cover plate 2 has handles 4 at both ends, and each handle 4 has a lifting ring 6 on both sides that is threadedly connected to the cover plate 2. The lower part of the filter tank 1 has a sewage pipe 10 that is connected to the bottom of the filter bag 13, and a drain valve 8 is provided on the sewage pipe 10.

[0022] In summary, this self-cleaning bag filter canister features a compact structure, good operational stability, and high efficiency. Backflushing by injecting gas into the canister after a differential pressure alarm solves the problem of bag clogging affecting filtration. This reduces the frequency of filter bag replacements and improves filtration effectiveness.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A self-cleaning filter bag canister, characterized in that: The filter includes a filter tank (1), which contains a filter bag (13). The filter bag (13) has a pressure plate (12) connected to the filter tank (1) at its upper end. The filter tank (1) has an inlet pipe (7) located below the pressure plate (12) and connected to the filter bag (13) on its outer wall. The filter tank (1) has an outlet pipe (9) located above the pressure plate (12) and connected to the filter bag (13) on its outer wall. The filter tank (1) has a differential pressure alarm (11) located below the inlet pipe (7) and connected to the filter tank (1) on its other side. The filter tank (1) has a cover plate (2) at its upper end. The cover plate (2) has an air inlet pipe (5) connected to the differential pressure alarm (11) and connected to the filter bag (13) on its circuit.

2. The self-cleaning bag filter canister according to claim 1, characterized in that: The filter bag (13) adopts a multi-bag integrated structure.

3. The self-cleaning bag filter canister according to claim 1, characterized in that: The cover plate (2) is equipped with a pressure gauge (3) that is connected to the filter tank (1) at its upper end.

4. The self-cleaning bag filter canister according to claim 1, characterized in that: The cover plate (2) is provided with handles (4) at both ends, and the handles (4) are provided with lifting rings (6) on both sides that are threadedly connected and fixed to the cover plate (2).

5. The self-cleaning bag filter canister according to claim 1, characterized in that: The filter tank (1) is provided with a sewage pipe (10) at the bottom, which is connected to the bottom of the filter bag (13), and a drain valve (8) is provided on the sewage pipe (10).

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