Novel pipeline access door device good in airtightness, safe and reliable

Abstract

The utility model discloses a novel pipeline access door device which is good in airtightness, safe and reliable, and relates to the technical field of waste gas mixing and filtering boxes. Comprising a pipeline body, a box body is fixedly arranged at a maintenance opening of the pipeline body, the box body is matched with the pipeline body in radian, positioning transverse plates are fixed to the periphery of the lower portion of the inner wall of the box body, an arc bottom shell is installed in the box body in an inserted mode, the arc bottom shell is matched with the pipeline body in radian, gap rubber is fixed to the periphery of the arc bottom shell, and the gap rubber makes contact with the inner wall of the box body. The arc bottom shell is filled with a first filling material body. Through the arrangement of the access door device, the arc bottom shell and the gap rubber, it is guaranteed that the access door device is matched with the radian of the access opening of the pipeline body, the vortex situation is effectively avoided, the first fireproof material body, the first filling material body, the second fireproof material body and the second filling material body guarantee that the access opening of the pipeline body is subjected to double-layer sealing, the sealing effect is better, and the service life of the pipeline body is prolonged. The lifting ring nut is locked more conveniently and quickly, and the locking effect is good and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust gas mixing filter boxes, in particular to a novel pipeline inspection door device that is well-sealed, safe and reliable. Background Art

[0002] Mixed filter boxes are mostly suitable for conditions with low pressure. At the same time, in order to understand the blockage of the filter and the wear of the air duct in the case of solid particles in the VOCS exhaust gas, it is necessary to open the inspection door within a specified time to check the internal conditions of the pipeline. Because of the presence of exhaust gas, the inspection door needs to be sealed and tightened, and each opening and closing of the bolts will waste a lot of time.

[0003] An existing flue gas duct inspection door and flue gas duct system (authorization announcement number: CN207635369U) have the following defects: the above-mentioned inspection door is convenient for quickly opening or closing the entire flue gas duct inspection door, is simple to operate and maintain, has a moderate overall cost, and has good versatility. However, when the pressure of the existing mixed filter box pipeline is not high, vortices will appear in the exhaust gas circulation between the inspection door and the pipeline body, which affects the safety and stability of the operation to a certain extent. For this reason, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a new pipeline inspection door device that is well sealed, safe and reliable, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of pipeline inspection door device that is well-sealed, safe and reliable, including a pipeline body, a box body fixedly arranged at the maintenance port of the pipeline body, the box body is adapted to the curvature of the pipeline body, and positioning horizontal plates are fixed around the lower part of the inner wall of the box body, an arc-bottom shell is inserted and installed in the box body, the arc-bottom shell is adapted to the curvature of the pipeline body, gap rubber is fixed around the arc-bottom shell, the gap rubber is in contact with the inner wall of the box, the inside of the arc-bottom shell is filled with a first filling material, and a first fireproof material is arranged on the lower part of the outer side of the arc-bottom shell, the first fireproof material is arranged on the positioning horizontal plate, and the positioning horizontal plate plays a role in positioning and installing the first fireproof material.

[0006] Preferably, the inner wall of the box is provided with a positioning slide groove adapted to slide with the first fireproof material body, and the positioning slide groove is arranged vertically.

[0007] Preferably, a top shell is fixed to the top of the arc bottom shell, the interior of the top shell is filled with a second filling material, and a second fireproof material is fixed to the bottom of the top shell.

[0008] Preferably, the second fireproof material body is in contact with the arc bottom shell and the inner wall of the box body, and a handle is fixed on the top of the top shell, and the handle is used to lift the top shell and the arc bottom shell as a whole.

[0009] Preferably, fixed plates are symmetrically fixed to the upper parts of the outer sides of the box body, and a rotating shaft rod is rotatably inserted between the two fixed plates.

[0010] Preferably, a connecting rod is fixed in the middle of the rotating shaft rod, and a screw sleeve on the upper part of the connecting rod is provided with a lifting nut, and the lifting nut is used to lock the top shell and the box body.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] This new type of pipeline inspection door device is well-sealed, safe and reliable. Through the setting of the inspection door device, the arc bottom shell and the gap rubber ensure that they are adapted to the curvature of the inspection port of the pipeline body, effectively avoiding the generation of eddy currents, and the first fireproof material body, the first filling material body, the second fireproof material body and the second filling material body ensure double-layer sealing of the inspection port of the pipeline body, with better sealing effect, and the locking of the lifting ring nut is more convenient and efficient, and the locking effect is good and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the utility model;

[0014] Figure 2 It is a partial structural sectional view of the utility model.

[0015] In the figure: 1. Pipe body; 2. Box body; 201. Positioning horizontal plate; 202. Positioning slide groove; 3. Arc bottom shell; 301. First filling material; 302. First fireproof material; 303. Gap rubber; 4. Top shell; 401. Second filling material; 402. Handle; 403. Second fireproof material; 5. Fixing plate; 501. Rotating shaft rod; 502. Connecting rod; 503. Lifting eye nut. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] During the use of the exhaust gas mixing filter box, a pipeline inspection door device is required. The inspection door device provided by the utility model makes it difficult for the exhaust gas to generate eddy currents when passing through the inspection door. The eye nut 503 has a good locking effect and is convenient. It adopts double-layer sealing, and the sealing effect is better. During the use of this device, it is necessary to carry out inspections and other preparatory work in advance to ensure the normal operation of the device.

[0018] like Figure 1-Figure 2As shown, the utility model provides a technical solution: a new type of pipeline maintenance door device with good sealing, safety and reliability, including a pipeline body 1, a box body 2 is fixedly provided at the maintenance port of the pipeline body 1, the box body 2 is adapted to the curvature of the pipeline body 1, and a positioning horizontal plate 201 is fixed around the lower part of the inner wall of the box body 2, an arc bottom shell 3 is inserted and installed in the box body 2, the arc bottom shell 3 is adapted to the curvature of the pipeline body 1, and gap rubber 303 is fixed around the arc bottom shell 3, the gap rubber 303 is in contact with the inner wall of the box 2, the interior of the arc bottom shell 3 is filled with a first filling material 301, and the lower outer side of the arc bottom shell 3 is provided with a first fireproof material 302. The fireproof material body 302 is arranged on the positioning horizontal plate 201, and the positioning horizontal plate 201 plays a role in positioning and installing the first fireproof material body 302. Among them, the box body 2 is fully sealed with the pipe body 1. The box body 2 adopts carbon steel or stainless steel materials for working conditions with different temperatures. Both carbon steel and stainless steel have high strength, can withstand large forces and pressures, have good wear resistance, maintain a long service life in friction and wear environments, are relatively easy to process, form and manufacture, and can be processed into parts of various complex shapes and sizes through various processes. The gap rubber 303 is an existing technology and plays the role of auxiliary sealing.

[0019] In an embodiment, a positioning groove 202 adapted to slide with the first fireproof material 302 is opened on the inner wall of the box body 2, and the positioning groove 202 is vertically arranged. A top shell body 4 is fixed on the top of the arc bottom shell body 3, and the interior of the top shell body 4 is filled with a second filling material body 401. A second fireproof material body 403 is fixed on the bottom of the top shell body 4, wherein the first filling material body 301 and the second filling material body 401 are made of rock wool or aluminum silicate fiber, both of which have good thermal insulation performance, high non-combustibility and fire resistance, chemical stability and environmental protection. The second fireproof material body 403 is in contact with the arc bottom shell body 3 and the inner wall of the box body 2, and a handle 402 is fixed on the top of the top shell body 4, and the handle 402 is used to lift the top shell body 4 and the arc bottom shell body 3 as a whole.

[0020] In the embodiment, fixing plates 5 are symmetrically fixed on the upper part of the outer surface of the box body 2, and a rotating shaft rod 501 is rotatably inserted between the two fixing plates 5, wherein the first fireproof material body 302 and the second fireproof material body 403 are made of ceramic fiber packing. A connecting rod 502 is fixed to the middle of the rotating shaft rod 501, and a screw sleeve 503 is provided on the upper part of the connecting rod 502. The screw sleeve 503 is used to lock the top shell 4 and the box body 2. Through the setting of the inspection door device, the arc bottom shell 3 and the gap rubber 303 are ensured to be adapted to the curvature of the inspection port of the pipe body 1, which effectively avoids the generation of vortexes. Flow situation, and the first fireproof material body 302, the first filling material body 301, the second fireproof material body 403 and the second filling material body 401 ensure double sealing of the inspection port of the pipe body 1, the sealing effect is better, the locking of the lifting ring nut 503 is more convenient and convenient, and the locking effect is good and reliable. Among them, the connecting rod 502 and the rotating shaft rod 501 are rotated as a whole with the rotating shaft rod 501 as the axis, which is convenient for locking and loosening the top shell body 4. The lifting ring nut 503 is an existing technology. The lifting ring nut 503 has good wear resistance and corrosion resistance, is safe and reliable, and is convenient and easy to use.

[0021] Working principle: When using the device, install the device, hold the handle 402, and place the arc bottom shell 3, the top shell 4, the first fireproof material body 302 and the second fireproof material body 403 as a whole into the box body 2. The first fireproof material body 302 slides along the positioning slide groove 202, and the second fireproof material body 403 contacts the inner wall of the box body 2 to ensure double-layer sealing. The arc bottom shell 3 is adapted to the curvature of the inspection port of the pipe body 1, which effectively avoids the generation of eddy currents and ensures safe and stable operation. After the installation is completed, the top shell 4 and the box body 2 can be locked by the lifting nut 503, which is convenient for installation and disassembly.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the accompanying embodiments and their equivalents.

Claims

1. A new type of pipeline inspection door device with good sealing, safety and reliability, comprising a pipeline body (1), characterized in that: A box body (2) is fixedly provided at the maintenance port of the pipeline body (1), the box body (2) and the pipeline body (1) are adapted to each other in curvature, a positioning transverse plate (201) is fixed around the lower inner wall of the box body (2), an arc bottom shell (3) is inserted and installed in the box body (2), the arc bottom shell (3) and the pipeline body (1) are adapted to each other in curvature, a gap rubber (303) is fixed around the arc bottom shell (3), the gap rubber (303) contacts the inner wall of the box body (2), the interior of the arc bottom shell (3) is filled with a first filling material (301), a first fireproof material (302) is provided at the lower outer side of the arc bottom shell (3), the first fireproof material (302) is provided on the positioning transverse plate (201), and the positioning transverse plate (201) plays a role in positioning and installing the first fireproof material (302).

2. A new type of pipeline inspection door device with good sealing, safety and reliability according to claim 1, characterized in that: The inner wall of the box body (2) is provided with a positioning slide groove (202) adapted to slide with the first fireproof material body (302), and the positioning slide groove (202) is arranged vertically.

3. The novel pipeline inspection door device with good sealing, safety and reliability according to claim 1 is characterized by: A top shell (4) is fixed to the top of the arc bottom shell (3), a second filling material (401) is filled inside the top shell (4), and a second fireproof material (403) is fixed to the bottom of the top shell (4).

4. A new type of pipeline inspection door device with good sealing, safety and reliability according to claim 3, characterized in that: The second fireproof material body (403) is in contact with the inner wall of the arc bottom shell (3) and the box body (2), and a handle (402) is fixed on the top of the top shell (4), and the handle (402) is used to lift the top shell (4) and the arc bottom shell (3) as a whole.

5. The novel pipeline inspection door device with good sealing, safety and reliability according to claim 1 is characterized by: Fixed plates (5) are symmetrically fixed on the upper portion of the outer side of the box body (2), and a rotating shaft rod (501) is rotatably inserted between the two fixed plates (5).

6. A new type of pipeline inspection door device with good sealing, safety and reliability according to claim 5, characterized in that: A connecting rod (502) is fixed in the middle of the rotating shaft rod (501), and a screw-connected sleeve is provided on the upper part of the connecting rod (502) with a lifting ring nut (503), which is used to lock the top shell (4) and the box body (2).

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