JPS586648B2 - Filter attachment/detachment device for pneumatic powder transport vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter attachment/detachment device for a pneumatic transport type powder/granular material transport vehicle.

Conventionally, filters used in powder and granular transport vehicles become clogged after a certain period of use, and when replacing or cleaning the filters, the filters are fixed in the mixed phase chamber with bolts, etc., so it is difficult to replace them. It takes time to
The work was complicated because the mixed phase chamber space was small.

Therefore, in the present invention, the filter is formed integrally and is configured to be detachable by a simple operation of inserting the filter into the multiphase chamber.

The present invention will be described below with reference to examples. Reference numeral 1 denotes a powder storage tank, which is mounted on a vehicle frame (not shown) and has a support shaft 2.
It can be tilted backwards by a hydraulic cylinder 3.

A discharge chamber 4 that slopes downward is installed at the lower rear end of the powder tank 1, and a mixed phase chamber 5 is installed at the end of the discharge chamber 4 to fluidize and float the powder inside. A flange 6 fixed to the end of the chamber 4 and a flange 7 of the multiphase chamber 5 are removably connected by bolts 8.

Further, a valve body 11 is connected in the extending direction of the guide passage 10 formed with the end l of the multiphase chamber 5, and together forms a discharge pipe 9. A filter 12 is removably inserted into the outer panel 1 of the mixed phase chamber 5.
An air chamber 1 is provided in a space surrounded by 3 and the filter 12.
4 is formed.

This filter 12 is fixed to a punched metal 15 having a large number of through holes, a canvas 16, and a holder 17 with bolts 18 so that they can be held in a truncated cone shape by overlapping them.

In addition, as another embodiment of the filter 12, an air-permeable sintered metal wall plate 12' may be used instead, and in this case, the punching metal 15 and holder 17 are unnecessary, and furthermore, as shown in FIG. (It is also possible to fit the packings 19 and 20 into both ends of the sintered metal wall plate 12' so that they come into contact between the flange 6 of the discharge chamber 4 and the guide passage 10 of the mixed phase chamber 5.

On the other hand, the outer peripheral end 17a of the holder 17 is bent outward and comes into contact with the packing 19 bonded to the end surface of the flange 6 of the discharge chamber 4, while the inner peripheral end 17b is bent inward and the guide It is inserted so that its end is in contact with the packing 20 fitted around the outer periphery of the passage 10.

Further, compressed air is supplied into the powder tank 1 through a pipe 21 from an air source such as a compressor (not shown), and similarly, compressed air is supplied to the air chamber 14 through a pipe 22 in order to fluidize the powder. .

23 is a secondary air supply pipe to the discharge pipe 9, and these pipes 2L22 and 23 are provided with on-off valves 24 and 25, respectively.
．． 26 are provided, and these on-off valves adjust the respective air supply amounts.

Next, to explain the operation, when transferring the powder and granular material in the powder and granular material tank 1 to receiving equipment such as a silo, first connect the discharge pipe 9 to the receiving equipment, and then open the valve body 11 and press the Supply pipe 2 while extending cylinder 3 and tilting tank 1.
1. When the on-off valves 24 and 25 of 22 are opened, the inside of the powder tank is pressurized to promote sliding of the powder to the rear of the tank, while the compressed air supplied to the air chamber 14 is transferred to the discharge chamber 4 and the mixed phase chamber. The powder and granular material in the container 5 is fluidized and floated, and then transferred to the receiving facility to complete the unloading operation.

Furthermore, in order to assist the fluidization phenomenon in the discharge chamber 4 and the multiphase chamber 5, the on-off valve 26 may be opened to supply secondary air into the discharge pipe 9.

Such unloading work will cause the filter 12 to become clogged, and in order to prevent this, the filter 12 will be removed after a certain period of time.
Clean or replace.

At this time, the bolts 8 installed between the flanges 6 and 7 of the discharge chamber 4 and the multiphase chamber 5 are loosened to disconnect the multiphase chamber 5 and the discharge pipe 9 connected integrally with the multiphase chamber 5. After removal, pull out the old set of filters 12 from the guide passage 10, replace and insert the new set of integrated filters 12, or clean it, and then tighten the bolts 8 again by reversing the steps above. In accordance with this tightening, the end portions of the holder 17 of the filter 12 are fitted with the packing 19 of the discharge chamber 4 and the packing 20 of the guide passage 10, respectively.
It automatically comes into contact with and is held in a fixed position.

As described above, according to the present invention, the filter is integrally formed in the shape of a truncated cone, so when replacing the filter or cleaning the filter, simply removing the multiphase chamber from the discharge chamber automatically removes the filter. The filter is automatically fixed when attached to the discharge chamber of the multiphase chamber, and there is no need to secure anything between the filter itself and the multiphase chamber or the discharge chamber, and the filter is clamped and stabilized. State supported.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view of the powder transport vehicle, Fig. 2 is a partial sectional view showing the main parts of the present invention, Fig. 3 is a partial front view taken from the line 3-3 in Fig. 2, and Fig. 4 is a partial sectional view showing the main parts of the present invention. FIG. 2 is a partially enlarged view, and FIG. 5 is a sectional view showing another embodiment. In the figure, 1 is a powder tank, 4 is a guide chamber, 5 is a mixed phase chamber, 12
is a filter.

Claims (1)

[Scope of Claims] 1. A mixed phase chamber 5 is detachably provided in the discharge chamber 4 of the powder tank 1 mounted on the vehicle body, and is integrally formed between the discharge chamber 4 and the mixed phase chamber 5 in the shape of a truncated cone. At the same time, the inner and outer circumferential ends of the filter are supported under pressure between the discharge chamber 4 and the multiphase chamber 5 in connection with the attachment of the filter to the discharge chamber 4 of the multiphase chamber 5. Filter attachment/detachment device for pneumatic transport type powder and granular transport vehicles. 2. A filter attachment/detachment device for a pneumatic transport type powder/granular material transport vehicle according to claim 1, wherein the filter 12 is formed by integrally polymerizing a punching metal 15, a canvas 16, and a canvas holder 17. 3. According to claim 1 or 2, the outer peripheral end 17a of the canvas holder 17 is bent outward, and the bent part is configured to abut against a packing 19 bonded to the end surface of the discharge chamber 4. A filter attachment/detachment device for pneumatic transport type powder and granular material transport vehicles. 4. The inner peripheral end portion 17b of the canvas holder 17 is bent inward, and the bent portion is configured to abut against a packing 20 fitted into the outer periphery of the guide passage 10 of the mixed phase chamber 5, or 2. A filter attachment/detachment device for a pneumatic transport type powder/granular material transport vehicle according to item 2.