Explosion venting device for bag-type dust collector

Abstract

The utility model provides an explosion venting device for a bag-type dust collector, which is arranged above the bag-type dust collector and comprises a guide rod, a guide rod support frame and a sliding block, wherein a cover plate is movably arranged at the top of the bag-type dust collector; the top of each cover plate is connected with a guide rod through a connecting piece; the two sides of each guide rod are arranged on the guide rod supporting frame in a sliding mode through sliding blocks. A limiting block is arranged on the top of the guide rod supporting frame. The explosion venting device is safe and reliable, the explosion venting device is manufactured based on the pressure basic principle, and the venting process is simple, efficient and safe.

Description

Technical Field

[0001] The present application relates to the safety field of a flash drying system, and in particular to an explosion relief device for a bag filter in a flash drying system. Background Art

[0002] Some combustible solids will form explosive dust clouds after being crushed. When this environment encounters fire sources such as open flames and static electricity, dust explosions are very likely to occur, causing serious damage to life and property. At present, the measures to avoid explosions in this production environment are mainly to control the dust concentration so that it is not within the explosion limit range, and to strictly control the generation of ignition sources. However, these are only safe under the premise of proper control. The present invention is the last layer of protection when the former control conditions are out of control. Summary of the invention

[0003] In order to solve the above problems, the present invention discloses an explosion relief device for a bag dust collector, which is safe and reliable. The explosion relief device is manufactured based on the basic principle of pressure, and the relief process is simple, efficient and safe.

[0004] A kind of explosion relief device for bag dust collector, the explosion relief device is arranged above the bag dust collector, and comprises a guide rod, a guide rod support frame and a slider; wherein the top of the bag dust collector is movably provided with a cover plate; wherein the top of each cover plate is connected to the guide rod through a connecting piece; the two sides of each guide rod are slidably arranged on the guide rod support frame through a slider; and a limit block is provided on the top of the guide rod support frame.

[0005] Furthermore, the bottom of each guide rod support frame is welded and fixed to the top of the bag filter.

[0006] Furthermore, a roller is provided in the slide groove of the sliding block; the roller is slidably matched with the guide rod support frame to ensure the smoothness of the movement.

[0007] Furthermore, the connecting member is cylindrical, so that the upper and lower ends can be connected to corresponding components.

[0008] The present invention is an explosion relief device for negative pressure environment. The cover plate on the bag filter is movable up and down. When the pressure in the system exceeds the design value, the cover plate is pushed open and moves upward along the guide rod support frame. The guide rod moves upward to the top and hits the limit block and then falls back to the initial state. In this process, the energy in the system is released, ensuring the safety of the system and restoring normal operation.

[0009] The utility model has the following beneficial effects: low failure rate, easy disassembly, simple maintenance, daily only requires lubrication and maintenance of the roller, and the discharge process is simple, efficient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1, a schematic diagram of the structure of the utility model in a normal state;

[0011] Figure 2 , Figure 1 Structural schematic diagram of the middle explosion relief state;

[0012] Figure 3 , a top view of the slider;

[0013] Figure 4 , structural diagram of the connecting parts;

[0014] Figure 5 , schematic diagram of the structure of the guide rod support frame. DETAILED DESCRIPTION

[0015] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0016] like Figure 1-5 As shown, an explosion relief device for a bag dust collector of this embodiment is arranged above the bag dust collector 4, including a guide rod 1, a guide rod support frame 2 and a slider 3; wherein a cover plate 5 is movably provided on the top of the bag dust collector 4; wherein the top of each of the cover plates 5 is connected to the guide rod 1 through a connector 6; and both sides of each of the guide rods 1 are slidably arranged on the guide rod support frame 2 through a slider 3. A limit block 8 is provided on the top of the guide rod support frame 2. A roller 7 is provided in the slide groove of the slider 3; and the roller 7 is slidably adapted to the guide rod support frame 2.

[0017] The cover on the bag filter is movable up and down. When the pressure in the system exceeds the design value, the cover is pushed open and moves upward along the surrounding guide rods. When it reaches the top and hits the baffle, it falls back to its original state. In this process, the energy in the system is released, ensuring the safety of the system and restoring normal operation.

[0018] P=F / S=m(Kg) / S(cm2). The present invention determines a relief pressure based on the definition of pressure. The explosion relief area (this area should meet the relief volume) and the weight of the cover plate can be calculated by the above formula. When the pressure in the system exceeds the relief pressure, the cover plate will automatically move upward along the guide rod. This process will release the pressure in the system and will not cause the cover plate to fly around due to the release. When the guide rod hits the top limit plate, it will naturally slide down to the starting position along the guide rod under the action of gravity. The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. An explosion relief device for a bag dust collector, characterized in that: The explosion relief device is arranged above the bag dust collector (4), and comprises a guide rod (1), a guide rod support frame (2) and a slider (3); wherein a cover plate (5) is movably provided on the top of the bag dust collector (4); wherein the top of each cover plate (5) is connected to the guide rod (1) via a connecting piece (6); the two sides of each guide rod (1) are slidably arranged on the guide rod support frame (2) via a slider (3), and a limit block (8) is provided on the top of the guide rod support frame (2).

2. The explosion relief device for bag filter according to claim 1, characterized in that: The bottom of each guide rod support frame (2) is welded and fixed to the top of the bag filter (4).

3. The explosion relief device for bag dust collector according to claim 1, characterized in that: A roller (7) is provided in the slide groove of the sliding block (3); the roller (7) is slidably adapted to the guide rod support frame (2).

4. The explosion relief device for bag dust collector according to claim 1, characterized in that: The connecting piece (6) is cylindrical.

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