JPH0645616U - Precoating device for filters in dust collectors - Google Patents

Abstract

(57) [Summary] [Purpose] The precoat agent contained in the container is allowed to rise evenly and adhere to the filter without providing a large number of injection nozzles. [Structure] The tip of a compressed air supply pipe 9 inserted into the body 1 of a dust collector is projected to the upper side of a dust bucket 10 containing a precoat agent PC, and a flexible tube 11 is attached to the tip of this supply pipe 9. The flexible tube 11 is hung inside the dust bucket 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is used in the technical field of a dust collector that collects and filters fine and sticky dust or mist, and specifically, captures the dust and mist described above. The present invention relates to a precoating device for a filter that attaches a precoating agent to a collecting filter (bug filter).

[0002]

[Prior art]

 A powdery precoating agent such as calcium carbonate is previously attached to the filter of the dust collector, and the harmful gas components such as tar and oil mist contained in the gas are adsorbed to this precoating layer, so that the filter can be used. It has been conventionally practiced to prevent the clogging of water and to collect (absorb) harmful gas components. As a device for adhering a precoating agent to a filter, for example, Japanese Patent Publication No. 2-2603. As disclosed in the official gazette, high pressure air is jetted from a high pressure air jet nozzle to a container containing the precoat agent so that the precoat agent rises into the dust collecting chamber and adheres to the filter. The device exists.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional device, the high-pressure air injection nozzle is fixed and always injects high-pressure air in a fixed direction. Therefore, when the pre-coating work is started, the pre-coating agent is effectively blown up. However, only the part where the injection nozzle is facing, that is, the part where the high-pressure air is directly injected and the precoating agent in the vicinity of it disappears, and the precoating agent in the part where the injection nozzle is not facing remains as it is. As a result, all the pre-coating agents contained in the container cannot be evenly blown up, or the amount of pre-coating agent that is blown up by the compressed air is insufficient, so that the pre-coating agent adheres sufficiently to the filter. There was a problem that I could not do it.

The above-mentioned problem can be solved by providing a large number of compressed air jet nozzles over the entire container containing the precoat agent. However, providing such a large number of jet nozzles is the only device. However, since it becomes complicated and a large amount of compressed air is required, and the equipment such as a compressor for supplying the compressed air needs to be enlarged, there is a problem that the cost is increased.

Therefore, the technical problem of the present invention is to raise the precoating agent in the container uniformly without leaving a large number of injection nozzles and attach it to the filter.

[0006]

[Means for Solving the Problems]

 Means taken in the present invention to solve the above technical problems are as follows. In a dust collector in which a container containing a pre-coating agent is provided in a dust collecting chamber in which a filter is suspended, and the pre-coating agent is blown up into the dust collecting chamber by jetting compressed air and adheres to the filter.

(1) A flexible tube is attached to the tip of a pipe that supplies compressed air, and the flexible tube is hung inside a container containing a precoat agent.

(2) A precoating agent is contained in a dust collection bucket that is freely retracted in the inner bottom of the dust collection chamber, and a flexible tube for injecting compressed air is hung in the bucket.

[0009]

[Action]

 The above means operate as follows. According to the means described in the above (1), when compressed air is jetted from the flexible tube through the pipe, the flexible tube irregularly and violently operates in the container due to the force of jetting the compressed air. Compressed air is jetted in all directions inside to allow all precoat agents in the container to rise evenly and adhere securely to the filter.

According to the means described in (2) above, since the dust collecting bucket stored in the inner bottom portion of the dust collector can be used as it is as a container for storing the precoat agent, a dedicated container for the precoat agent is separately provided in the dust collector. As a result, it is possible to easily and inexpensively implement the precoating device for the dust collector. As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

[0011]

【Example】

 Hereinafter, a preferred embodiment of the filter precoat device in the dust collector according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side sectional view of a pulse jet type dust collector in which a precoat device according to the present invention is implemented. In the figure, 1 is the body of the dust collector, 2 is the inside of the body 1 and a clean room 3 and a dust collector. A partition plate for partitioning the chamber 4 into two chambers, an upper chamber and a lower chamber 4. A dust collecting fan 5 rotated by a motor 5M is installed in the clean chamber 3, and a dust collecting air suction port 4a is provided. A plurality of bag filters 8 are hung from the partition plate 2 inside the chamber 4, and are sucked into the dust collecting chamber 4 from the suction port 4a by receiving the suction force by the rotation of the dust collecting fan 5. The dust-containing air thus obtained has a structure in which dust, mist and the like are collected by each filter 8 ... And filtered, and then discharged through the clean room 3 to the outside of the machine.

Further, in the figure, reference numeral 7 denotes a blow pipe for backwashing which is horizontally installed in the above-mentioned clean room 3. When the above-mentioned backwash of each filter 8 is carried out, the blowpipe 7 is passed from the header pipe 6 through the valve 6a. The compressed air sent to the blower is blown from the injection nozzles 7a into the venturi pipes 8a attached to the upper ends of the respective filters 8 ... And the pressure of the blown compressed air causes the surface of each filter 8 to flow. The structure is such that dust or mist adhering to the dust is removed and collected in the lower dust bucket 10.

Next, the upper end of 9 is connected to the above-mentioned header pipe 6 via the valve 6b, and the lower end is inserted into the machine body 1 and positioned at the upper part of the dust bucket 10 described above. A compressed air supply pipe, 11 is a flexible tube attached to the front end 9a of the compressed air supply pipe 9, and the lower end side of the tube 11 made of rubber or synthetic resin to have a flexible structure as a whole is As shown in the drawing, it is suspended inside the dust bucket 10 described above.

Further, PC is a precoat agent housed in the above-mentioned dust bucket 10 that is housed in the inner bottom of the machine body 1 so as to be freely drawn out, and 8b is a filter gauge mounted in each filter 8.

The precoat device for a filter in the dust collector according to the present invention is configured as described above, and in operating the dust collector, first, the precoat agent PC is housed in the dust bucket 10 and then The dust collecting operation is performed by rotating the dust collecting fan 5, and the valve 6b is opened to inject the compressed air through the supply pipe 9 into the dust bucket 10 through the flexible tube 11.

Then, the flexible tube 11 irregularly violently operates in the dust bucket 10 as shown in FIG. 2 due to the momentum of the compressed air jetting, and the compressed air is jetted in all directions in the dust bucket 10. As a result, all the precoat agent PC contained in the dust bucket 10 can be evenly raised and adhered to the filters 8 ... As a result.

When the precoating work is completed in this way, the valve 6b is closed to stop the supply of the compressed air to the supply pipe 9, and thereafter, dust or mist is sucked by the dust collecting fan 5 to filter each filter 8a. Can be attached to and collected from the precoat layer.

[0018]

[Effect of device]

 As described above, according to the filter precoat device in the dust collector according to the present invention, it is extremely easy to install a flexible tube in one supply pipe without providing a large number of compressed air injection nozzles. Depending on the configuration, all the precoating agent can be raised evenly and adhered to the filter, and the precoat layer can be surely adhered and formed on the filter surface, and the dust bucket serves as a container for the precoating agent. Combined with the fact that it can be used as it is, it is extremely practical with respect to various dust collectors such as the pulse jet dust collector shown in the figure.

[Brief description of drawings]

FIG. 1 is a side sectional view of a dust collector in which a precoat device according to the present invention is implemented.

FIG. 2 is a cross-sectional view of a main part of the dust collector showing a state in which a precoat agent is being lifted up by compressed air injected from a flexible tube.

[Explanation of symbols]

 1 Body of dust collector 4 Dust collection chamber 8 Filter 9 Compressed air supply pipe 10 Dust bucket 11 Flexible tube PC Pre-coating agent

Claims (2)

[Scope of utility model registration request] 1. A dust collector in which a container containing a pre-coating agent is provided in a dust-collecting chamber in which a filter is suspended, and the pre-coating agent is soared into the dust-collecting chamber by spraying compressed air to adhere to the filter. A precoat device for a filter in a dust collector, characterized in that a flexible tube is attached to the tip of a pipe for supplying compressed air, and the flexible tube is hung inside a container containing a precoat agent. 2. A precoat agent is housed in a dust collecting bucket housed in the dust collecting chamber so as to be freely drawn out at an inner bottom portion of the dust collecting chamber.
2. A precoat device for a filter in a dust collector according to claim 1, wherein a flexible tube for injecting compressed air is suspended in the bucket.