JPH0966210A - Dust collector - Google Patents

Abstract

(57) [Summary] [Purpose] It is easy to replace the filter paper so that there is no individual difference in the replacement. [Structure] Suction hole 1a with wire mesh for preventing deformation of filter paper 12
A door 2 having a rotary shaft 1c with a part of the main body 1 having an O-ring 1b is provided with a vent hole 2a, a spring 2b, and a cutout 2c. The filter paper holder 3 is inserted and the filter paper holder 3 is fixed in position by the spring 2b to integrate the door 2 with the main body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector which can collect dust contained in air to be sucked and passed through a filter paper in a facility using a radioactive substance.

[0002]

2. Description of the Related Art A dust collector according to the present invention is, for example,
It is a device that can collect dust in the air at facilities that handle radioactive materials such as nuclear fuel, and it is used for radiation monitoring that measures radiation and radioactive contamination in the controlled area and compares it with control standards. FIG. 2 is a view showing the structure of a conventional dust collector,
(a) is a sectional view and (b) is a front partial view. The main body 11 is a wire mesh 11b that prevents the filter paper 12 from being deformed by suction of air.
Groove for fitting with the attached pressing plate 11a, and filter paper holder 12
There is a screw portion that can be screwed to the cover 14 that holds the ring a and the ring 13. The filter paper 12 is fixed by screwing the cover 14 into the main body 11. When suctioned from the other end of the main body in this state, the air near the cover 14 passes through the filter paper 12 to collect dust that cannot pass through the gaps in the filter paper.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the area where many dust collectors described in the prior art are installed, when replacing the filter paper,
Lots of effort is required to loosen and tighten the screws.
When the filter paper was attached and then the cover was screwed and tightened to make the area around the filter paper almost airtight, it was determined by the tightening torque felt by the fingers, so there were times when individual variations occurred and the airtightness could not be made close to airtight. .

An object of the present invention is to provide a dust collector that facilitates replacement of filter paper and does not cause individual differences in replacement work.

[0005]

SUMMARY OF THE INVENTION The present invention is a dust collector that has a filter paper, a fixture for fixing the periphery of the filter paper, and a suction port for preventing the filter paper from coming off and leaving dust on the filter paper by suction of air. There is a main body that is integral with the suction port, a vent that is provided at a position facing the suction port, and a door that can be integrated with the main body, and a filter paper holder with a vent hole that is fitted with a filter paper inside the door. The filter paper is fixed at the suction port when the door is integrated with the main body.

According to the present invention, in the dust collector according to claim 1, the main body is provided with an airtight member for airtightly fixing the periphery of the filter paper, a rotating part when integrated with the door, and an elastic member to raise the upper part. There is a lock shaft that is located at the position that can be engaged with and disengaged from the door by pressing it down. It has a rotating part when it is integrated with the main body, and a stop part that determines the full open angle from the main body, the full open angle is an acute angle, and the filter paper holder has a groove part for inserting the filter paper.

Further, according to the present invention, in the dust collector according to claim 2, the elastic body of the door has such strength that it can be automatically opened when the door is separated from the main body by pushing down the lock shaft, and the full opening angle of the door is from 40 to 40. The structure is 80 degrees.

[0008]

According to the present invention, since the filter paper is mounted on the filter paper holder and inserted into the door, and when the door is integrated with the main body, the filter paper is fixed around the periphery by the suction port with the stopper.
The flexible filter paper can hold its position and leave a dust of a size determined by the filter paper. According to the invention,
In the dust collector that leaves this dust on the filter paper, the door is separated from the main body by pressing the fitting portion using the spring, and the door is not separated from the main body by the elastic body of the door, the rotating shaft, and the stop portion. It can be opened automatically at an acute angle, the filter paper holder can be easily removed without dropping, and the filter paper can be replaced, and when the door with the filter paper holder is rotated to the position to close it, it will be fitted into the fitting part using the spring and the door will be fixed. The door can be returned to the used state, and the door can be automatically opened from 40 to 80 degrees from above when the lock shaft is pushed by the spring and the stop portion.

[0009]

FIG. 1 shows an embodiment of the present invention. The main body 1 integrated with the suction hole 1a with a wire mesh has an O-ring 1b arranged around the suction hole 1a, and a coil spring 1f pushes up a push button 1e integral with an opening / closing lock rod 1g and connects it to a door 2 with a shaft 1c. ing. The door 2 having the ventilation hole 2a defines the filter paper holder 3 in which the filter paper 12 is mounted in the filter paper groove 3a by the spring 2b in the door 2 and the notch 2 is formed when the door 2 is changed from the open state to the closed state.
Opening / closing lock bar 1g hangs in P direction due to c
The door 2 is fixed by being fitted in 2c. In this state,
Since the O-ring 1b presses the periphery of the filter paper 12, when air is sucked from the Q direction, the air passing through the suction hole 1a always passes through the filter paper 12 and dust is left. Push button when replacing the filter paper
When 1e is pressed, the door 2 is automatically opened by the force of the spring 2b at a certain angle of less than 90 degrees, for example, 40 to 80 degrees, so that the lower stop portion of the door 2 is positioned on the convex portion of the suction hole 1a to be fully opened. The filter paper 12 can be easily replaced by pulling out the filter paper holder 3.

When returning to the use condition, the door 2
Since it can be easily integrated with the main body 1, it is possible to perform the replacement work of the filter paper with one hand.

[0011]

According to the present invention, the filter paper can be replaced by pressing the button and removing the filter paper holder, and can be restored to the used state by inserting the filter paper holder and rotating the door to push the filter paper. A dust collector that does not come out can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

2A and 2B are structural views of a conventional example, where FIG. 2A is a sectional view and FIG. 2B is a partial front view.

[Explanation of symbols]

 1 Main body 1a Suction hole 1b O-ring 1e Push button 2 Door 2a Vent hole 3 Filter paper holder 3a Filter paper groove 11 Main body 11b Wire mesh 12 Filter paper 14 Cover

Claims (3)

[Claims] 1. A filter paper, and a fixture for fixing the periphery of the filter paper,
It is a dust collector that has a suction port with a filter paper removal stopper and that leaves dust on the filter paper by suction of air, and has a body integrated with the suction port and a ventilation hole at a position facing the suction port. A door that can be integrated with the filter paper and a filter paper holder with a ventilation hole that is fitted with the filter paper inside the door are provided.The filter paper is fixed at the suction port when the door is integrated with the main body. Characteristic dust collector. 2. The dust collector according to claim 1, wherein the main body is located above the filter member by an airtight member for airtightly fixing the periphery of the filter paper, a rotating part when integrated with the door, and an elastic member. There is a lock shaft that can be attached to and detached from the door by means of the door. The dust collector is characterized in that it has a rotating part when it is turned on and a stop part that determines the full opening angle from the main body, the full opening angle is an acute angle, and the filter paper holder has a groove part for inserting the filter paper. 3. The dust collector according to claim 2, wherein the elastic body of the door has such strength that it can be automatically opened when the door is separated from the main body when the lock shaft is pushed down, and the full opening angle of the door is 40 to 80 degrees. A dust collector characterized by having either of the above.