A paraformaldehyde waste gas recovery and reuse device

Abstract

The utility model relates to the technical field of polyformaldehyde waste gas recovery, and in particular to a polyformaldehyde waste gas recovery and reuse device, including a recovery box and a spray head, wherein an air intake pipe and an exhaust pipe are fixedly installed on both sides of the recovery box, a drainage bucket is fixedly connected to the bottom of the recovery box, a sealing sleeve is sleeved on the outside of the drainage bucket, and a delivery pipe is fixedly connected to the bottom of the sealing sleeve; a rotating shaft with an L-shaped cross section is rotatably installed on the drainage bucket, and the rotating shaft passes through one end of the drainage bucket and is fixedly connected to a filter screen, and a rotating assembly is arranged on the drainage bucket. The utility model can filter impurities mixed in the cleaning liquid by using the filter screen, and can conveniently and quickly clean impurities adhering to the surface of the filter screen, so that the filter screen can continuously and efficiently filter impurities in the cleaning liquid, which can effectively avoid blockage of the delivery pipe for conveying the cleaning liquid, and is conducive to the use of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of paraformaldehyde waste gas recovery, in particular to a paraformaldehyde waste gas recovery and reuse device. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technology related to the recovery of polyformaldehyde waste gas is also constantly improving. At present, for the recovery and reuse of polyformaldehyde waste gas, the polyformaldehyde waste gas is generally washed with water and then introduced into the next equipment for reuse.

[0003] At present, in the recovery and reuse device used for the paraformaldehyde waste gas, when the paraformaldehyde waste gas is recovered by water washing, the washing cleaning liquid will be directly reused. After the cleaning liquid is used for a long time, a large amount of impurities in the paraformaldehyde waste gas will be mixed in it, which will easily cause the delivery pipe for conveying the cleaning liquid to be blocked, which is not conducive to the use of the device. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: in the current recovery and reuse device used for paraformaldehyde waste gas, when the paraformaldehyde waste gas is washed and recovered, the washing liquid of the washing will be directly reused. After the washing liquid is used for a long time, a large amount of impurities in the paraformaldehyde waste gas will be mixed in it, which will easily cause the conveying pipe for conveying the washing liquid to be blocked, which is not conducive to the use of the device. A paraformaldehyde waste gas recovery and reuse device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A paraformaldehyde waste gas recovery and reuse device comprises a recovery box and a spray head, wherein an air intake pipe and an exhaust pipe are fixedly installed on both sides of the recovery box, a drainage bucket is fixedly connected to the bottom of the recovery box, a sealing sleeve is sleeved on the outside of the drainage bucket, and a conveying pipe is fixedly connected to the bottom of the sealing sleeve;

[0007] A rotating shaft with an L-shaped cross-section is rotatably installed on the drainage bucket, and one end of the rotating shaft passes through the drainage bucket and is fixedly connected to a filter screen. A rotating assembly is provided on the drainage bucket, and the rotating assembly includes a rotating rod rotatably installed on the drainage bucket, one end of the rotating rod is fixedly connected to a scraper bar, and a plurality of supporting legs are fixedly connected to the bottom of the recovery box, and one of the supporting legs is connected to the rotating rod by a pull rope.

[0008] Preferably, a torsion spring is sleeved on the rotating rod, one end of the torsion spring is fixedly connected to the rotating rod, and the other end of the torsion spring is fixedly connected to the drainage bucket.

[0009] Preferably, a sealing ring is fixedly connected to the side surface of the filter screen, and the surface of the sealing ring is in close contact with the inner wall of the drainage bucket.

[0010] Preferably, a limiting block having a concave cross-section is fixedly connected to one side of the sealing sleeve, and the inner surface of the limiting block is in contact with the surface of the rotating shaft.

[0011] Preferably, an ear plate is fixedly connected to one side of the drainage bucket, a threaded rod is threadedly connected to the ear plate, and an opening is formed at the bottom of the sealing sleeve.

[0012] Preferably, the bottoms of the plurality of support legs are fixedly connected to a base, and the cross-section of the base is arranged in an isosceles trapezoid.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The filter can be used to filter out impurities in the cleaning liquid, and the impurities adhering to the surface of the filter can be cleaned quickly and conveniently, so that the filter can continue to efficiently filter the impurities in the cleaning liquid, which can effectively avoid blockage of the delivery pipe for conveying the cleaning liquid and is beneficial to the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front structural schematic diagram of a paraformaldehyde waste gas recovery and reuse device proposed by the utility model;

[0016] Figure 2 It is a schematic diagram of the partial front cross-sectional structure of the drainage bucket and the rotating rod in the utility model;

[0017] Figure 3 It is a schematic diagram of the partial front cross-sectional structure of the discharge hopper and the sealing ring of the utility model;

[0018] Figure 4 It is a partial three-dimensional structural schematic diagram of the limit block and the rotating shaft in the utility model.

[0019] In the figure: 1 recovery box, 2 base, 3 ear plate, 4 threaded rod, 5 sealing sleeve, 6 drainage bucket, 7 air inlet pipe, 8 sprinkler head, 9 pull rope, 10 rotating shaft, 11 conveying pipe, 12 scraper, 13 rotating rod, 14 torsion spring, 15 sealing ring, 16 filter screen, 17 limit block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0022] Reference Figure 1-Figure 4 A device for recycling and reusing polyformaldehyde waste gas comprises a recycling box 1 and a spray head 8. An air intake pipe 7 and an exhaust pipe are fixedly installed on both sides of the recycling box 1. A drainage bucket 6 is fixedly connected to the bottom of the recycling box 1. A sealing sleeve 5 is sleeved on the outside of the drainage bucket 6. A delivery pipe 11 is fixedly connected to the bottom of the sealing sleeve 5. Air valves are installed on the air intake pipe 7 and the exhaust pipe. An air pump (not shown) delivers the polyformaldehyde waste gas to the recycling box 1 through the air intake pipe 7. A water pump (not shown) draws cleaning liquid into the spray head 8. The spray head 8 sprays the cleaning liquid into the polyformaldehyde waste gas inside the recycling box 1, washes the polyformaldehyde waste gas with water, and after cleaning the toxic gas in the polyformaldehyde waste gas, the polyformaldehyde waste gas can be introduced into the next device through the exhaust pipe for recycling.

[0023] A rotating shaft 10 with an L-shaped cross section is rotatably installed on the drainage bucket 6. One end of the rotating shaft 10 passes through the drainage bucket 6 and is fixedly connected to a filter screen 16. A rotating component is provided on the drainage bucket 6, and the rotating component includes a rotating rod 13 rotatably installed on the drainage bucket 6. One end of the rotating rod 13 is fixedly connected to a scraper strip 12. A plurality of supporting legs are fixedly connected to the bottom of the recovery box 1, and one of the supporting legs is connected to the rotating rod 13 by a pull rope 9. The surface of the sealing sleeve 5 when connected to the drainage bucket 6 is set to be a rubber material. The sealing sleeve 5 and the drainage bucket 6 have good sealing properties when connected. The sealing properties of the rotating rod 13 and the rotating shaft 10 when connected to the drainage bucket 6 are relatively good, which can effectively prevent liquid seepage.

[0024] A torsion spring 14 is sleeved on the rotating rod 13, one end of the torsion spring 14 is fixedly connected to the rotating rod 13, and the other end of the torsion spring 14 is fixedly connected to the drainage bucket 6. The inelastic pull rope 9 is pulled, and under the transmission action of the pull rope 9, the rotating rod 13 rotates, the torsion spring 14 is deformed, and the side surface of the filter screen 16 is fixedly connected with a sealing ring 15. The surface of the sealing ring 15 is tightly attached to the inner wall of the drainage bucket 6. The sealing ring 15 can effectively improve the sealing performance of the filter screen 16 when it is horizontally connected to the inner wall of the drainage bucket 6, thereby preventing the cleaning liquid from seeping out from the gap between the sealing ring 15 and the drainage bucket 6.

[0025] A limit block 17 with a concave cross-section is fixedly connected to one side of the sealing sleeve 5. The inner surface of the limit block 17 fits the surface of the rotating shaft 10. When the sealing sleeve 5 is sleeved on the outside of the drainage bucket 6, the inner surface of the limit block 17 is tightly attached to the surface of the rotating shaft 10. At this time, the filter screen 16 is horizontally arranged inside the drainage bucket 6.

[0026] An ear plate 3 is fixedly connected to one side of the drainage bucket 6, and a threaded rod 4 is threadedly connected to the ear plate 3. An opening is opened at the bottom of the sealing sleeve 5. When the threaded rod 4 is rotated and the threaded rod 4 is threadedly connected to the ear plate 3, it will gradually separate from the inner wall of the opening. Then, the sealing sleeve 5 is pulled downward to separate the sealing sleeve 5 from the drainage bucket 6. A base 2 is fixedly connected to the bottom of the multiple supporting legs. The cross-section of the base 2 is an isosceles trapezoid. The base 2 has a large contact area with the ground, which can better support the recycling box 1.

[0027] In the utility model, when in use, after the cleaning liquid sprayed from the spray head 8 washes the polyformaldehyde waste gas with water, the cleaning liquid will pass through the filter screen 16 and be discharged through the delivery pipe 11. The water pump can pump the cleaning liquid into the spray head 8 for repeated use. When there are many impurities on the surface of the filter screen 16, first rotate the threaded rod 4. During the process of the threaded connection between the threaded rod 4 and the ear plate 3, it will gradually separate from the opening, and then pull the sealing sleeve 5 downward, the soft delivery pipe 11 will be deformed, and the sealing sleeve 5 will be separated from the drainage bucket 6 at the same time, and then rotate the rotating shaft 10. After the rotating shaft 10 rotates ninety degrees, the surface of the filter screen 16 with impurities attached will be It will contact the surface of the scraper strip 12, and then pull the inelastic pull rope 9. Since one end of the pull rope 9 is wrapped around the rotating rod 13, and the other end is fixedly connected to the supporting leg, under the transmission action of the pull rope 9, the rotating rod 13 rotates, and the torsion spring 14 is deformed, thereby driving the rotating rod 13 to rotate along the surface of the filter screen 16, so that impurities on the surface of the filter screen 16 can be scraped off, and the spray head 8 sprays water into the recovery box 1 to wash away the impurities remaining on the surface of the filter screen 16. The subsequent filter screen 16 can continue to efficiently filter impurities in the cleaning liquid, which can effectively avoid blockage of the delivery pipe 11 for delivering the cleaning liquid, which is beneficial to the use of the device.

[0028] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A paraformaldehyde waste gas recovery and reuse device, comprising a recovery box (1) and a spray head (8), characterized in that: An air intake pipe (7) and an exhaust pipe are fixedly installed on both sides of the recovery box (1), a drainage bucket (6) is fixedly connected to the bottom of the recovery box (1), a sealing sleeve (5) is sleeved on the outside of the drainage bucket (6), and a delivery pipe (11) is fixedly connected to the bottom of the sealing sleeve (5); A rotating shaft (10) having an L-shaped cross section is rotatably mounted on the drainage bucket (6); one end of the rotating shaft (10) passing through the drainage bucket (6) is fixedly connected to a filter screen (16); a rotating assembly is arranged on the drainage bucket (6); the rotating assembly comprises a rotating rod (13) rotatably mounted on the drainage bucket (6); one end of the rotating rod (13) is fixedly connected to a scraper strip (12); a plurality of supporting legs are fixedly connected to the bottom of the recovery box (1), one of the supporting legs being connected to the rotating rod (13) via a pull rope (9).

2. The device for recycling and reusing paraformaldehyde waste gas according to claim 1, characterized in that The rotating rod (13) is sleeved with a torsion spring (14), one end of the torsion spring (14) is fixedly connected to the rotating rod (13), and the other end of the torsion spring (14) is fixedly connected to the drainage bucket (6).

3. The device for recycling and reusing paraformaldehyde waste gas according to claim 1, characterized in that: A sealing ring (15) is fixedly connected to the side surface of the filter screen (16), and the surface of the sealing ring (15) is in close contact with the inner wall of the drainage bucket (6).

4. The device for recycling and reusing paraformaldehyde waste gas according to claim 1, characterized in that: A limiting block (17) having a concave cross-section is fixedly connected to one side of the sealing sleeve (5), and the inner surface of the limiting block (17) is in contact with the surface of the rotating shaft (10).

5. The device for recycling and reusing paraformaldehyde waste gas according to claim 1, characterized in that: A lug plate (3) is fixedly connected to one side of the drainage bucket (6), a threaded rod (4) is threadedly connected to the lug plate (3), and an opening is provided at the bottom of the sealing sleeve (5).

6. The device for recycling and reusing paraformaldehyde waste gas according to claim 1, characterized in that: The bottoms of the plurality of support legs are fixedly connected to a base (2), and the cross section of the base (2) is arranged in an isosceles trapezoidal shape.

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