Formaldehyde production diffusion prevention device

Abstract

This utility model relates to the field of formaldehyde production technology, specifically to an anti-diffusion device for formaldehyde production, comprising a first conveying pipe, a second conveying pipe, and a sealing mechanism. The sealing mechanism includes a first sealing cover and a second sealing cover. In this utility model, the first and second sealing covers are fitted onto the surfaces of the first and second conveying pipes, respectively. Sealing gaskets and arc-shaped soft pads effectively fill the gaps between the sealing covers and between the sealing covers and the conveying pipes, preventing formaldehyde from leaking and diffusing into the environment from the pipe connections. Furthermore, a fan inside the filter pipe promotes airflow, allowing any potentially leaked formaldehyde gas to pass through activated carbon blocks within a support frame. The activated carbon adsorbs and removes the formaldehyde, purifying the air and preventing its diffusion into the surrounding environment, thus reducing the risk of harm to workers. The support frame can be easily installed and disassembled using a sleeve, screw, and knob structure, facilitating the replacement of activated carbon blocks and ensuring the continuity of the adsorption and purification effect.

Description

Technical Field

[0001] This utility model relates to the field of formaldehyde production technology, and in particular to an anti-diffusion device for formaldehyde production. Background Technology

[0002] Formaldehyde, also known as formalin, has a wide range of uses. It is a common chemical product with a simple production process and abundant raw material supply. It is a mainstay of the methanol downstream product chain, with approximately 30% of the world's methanol production used to produce formaldehyde, amounting to about 25 million tons annually. Formaldehyde solution is a low-concentration aqueous solution, which is economically inconvenient for long-distance transportation. Therefore, plants are generally located near major consumption markets, and import / export trade is minimal. Industrially, it is mainly produced using methanol oxidation and direct natural gas oxidation methods. During the production and transportation of formaldehyde, there is a possibility of diffusion from pipeline joints. Diffused formaldehyde in the environment can cause air pollution and potentially harm workers. Therefore, a diffusion prevention device for formaldehyde production is proposed. Utility Model Content

[0003] The purpose of this invention is to solve the problems mentioned in the background art and to propose an anti-diffusion device for formaldehyde production.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a formaldehyde production anti-diffusion device, comprising a first conveying pipe, a second conveying pipe, and a sealing mechanism. The sealing mechanism includes a first sealing cover and a second sealing cover, which are fitted onto the surfaces of the first and second conveying pipes. A sealing gasket is provided between the first and second sealing covers. Both the first and second sealing covers have arc grooves on their surfaces, and arc-shaped soft pads are provided inside the arc grooves. A filter tube is fixedly connected to the surface of the second sealing cover. A slot is opened on the surface of the filter tube, and a support frame is inserted inside the slot. An activated carbon block is placed inside the support frame. A fan is installed inside the filter tube. A sleeve is fixedly connected to the surface of the support frame, and a screw is threaded into the sleeve. A knob is fixedly connected to one end of the screw. A circular groove is opened on the surface of the filter tube, and one end of the screw is inserted into the circular groove.

[0005] Preferably, there are two sets of screws, and the two sets of screws are symmetrically distributed on both sides of the middle part of the surface of the filter tube.

[0006] Preferably, a dustproof net is fixedly connected inside the filter tube, and the dustproof net is located at the end of the filter plate.

[0007] Preferably, a card seat is fixedly connected to the surface of the first sealing cover, and a card block is fixedly connected to the surface of the second sealing cover. The card block is engaged with the card seat. A square groove is formed on the surface of the card block. A first card plate and a second card plate are slidably connected inside the square groove. A spring is fixedly connected between the first card plate and the second card plate. A first pressure rod and a second pressure rod are fixedly connected to the surfaces of the first card plate and the second card plate, respectively.

[0008] Preferably, there are two sets of the first card plates, and the two sets of the first card plates are symmetrically distributed on both sides of the middle part of the surface of the sealing cover second. There are also two sets of the second card plates, and the two sets of the second card plates are symmetrically distributed on both sides of the middle part of the surface of the sealing cover second.

[0009] Preferably, the surface of the card holder has a card slot, which is aligned with the square groove.

[0010] Preferably, a formaldehyde alarm is fixedly connected to the inner wall of the second sealing cover.

[0011] Preferably, the surface of the second sealing cover has a slot, and a rod is fixedly connected to the surface of the second sealing cover, the rod being inserted into the slot.

[0012] Preferably, a magnet is fixedly connected inside the slot, and the magnet is magnetically connected to the insertion rod.

[0013] Preferably, both the first and second conveying pipes have limiting grooves on their surfaces, and the first sealing cover is fixedly connected to a limiting rod, which is inserted into the limiting groove.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, the sealing mechanism, through the sealing cover one and sealing cover two fitted onto the surfaces of the conveying pipe one and conveying pipe two, and the setting of sealing gaskets and arc-shaped soft pads, can effectively fill the gaps between the sealing covers and between the sealing covers and the conveying pipes, preventing formaldehyde from leaking and spreading to the outside from the pipe joints. In addition, the fan set in the filter pipe can promote air circulation, so that the formaldehyde gas that may leak can pass through the activated carbon block in the support frame. The activated carbon adsorption effect is used to remove formaldehyde, purify the air, prevent it from spreading to the surrounding environment, and reduce the risk of injury to workers. Moreover, the support frame can be easily installed and disassembled through the sleeve, screw and knob structure, which facilitates the replacement of activated carbon blocks and ensures the continuity of adsorption and purification effect.

[0016] 2. In this utility model, the method of connecting the card holder and the card block facilitates the installation and disassembly of the first and second sealing covers, making it convenient to maintain, repair or replace the sealing gasket and other components of the sealing mechanism. The first and second card plates and the corresponding pressure rod structure connected by springs inside the card block make the connection more secure after engagement, effectively preventing the first and second sealing covers from accidentally separating during normal use and ensuring the durability of the sealing effect. Attached Figure Description

[0017] Figure 1 This utility model provides a schematic diagram of an anti-diffusion device for formaldehyde production;

[0018] Figure 2 This utility model provides an exploded view of an anti-diffusion device for formaldehyde production.

[0019] Figure 3 A schematic diagram of a sealing cover for an anti-diffusion device used in formaldehyde production is provided for this utility model.

[0020] Figure 4 This utility model proposes an anti-diffusion device for formaldehyde production. Figure 2 Enlarged view of point A in the middle;

[0021] Figure 5 An enlarged view of section B in the formaldehyde production anti-diffusion device 2 is provided for this utility model;

[0022] Figure 6 This invention provides a partially exploded schematic diagram of an anti-diffusion device for formaldehyde production.

[0023] Legend:

[0024] 1. Conveying pipe one; 2. Conveying pipe two; 3. Sealing mechanism; 301. Sealing cover one; 302. Sealing cover two; 303. Circular groove; 304. Arc-shaped soft pad; 305. Filter pipe; 306. Fan; 307. Groove opening; 308. Bearing frame; 309. Activated carbon block; 310. Sealing gasket; 4. Card seat; 5. Card block; 6. Card slot; 7. Square groove; 8. First card plate; 9. Spring; 10. Second card plate; 11. First pressure rod; 12. Second pressure rod; 13. Formaldehyde alarm; 14. Slot; 15. Insert rod; 16. Magnet; 17. Limiting groove; 18. Sleeve; 19. Screw; 20. Knob; 21. Limiting rod; 22. Dustproof net; 23. Circular groove. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1: As Figure 1 - Figure 6 As shown, this utility model provides a technical solution: a formaldehyde production anti-diffusion device, including a first conveying pipe 1, a second conveying pipe 2, and a sealing mechanism 3. The sealing mechanism 3 includes a first sealing cover 301 and a second sealing cover 302, which are sleeved on the surfaces of the first conveying pipe 1 and the second conveying pipe 2. A sealing gasket 310 is provided between the first sealing cover 301 and the second sealing cover 302. Both the first sealing cover 301 and the second sealing cover 302 have arc grooves 303 on their surfaces, and arc-shaped soft pads 304 are provided inside the arc grooves 303. A filter pipe 305 is fixedly connected to the surface of the second sealing cover 302, and a groove is provided on the surface of the filter pipe 305. 307, a support frame 308 is inserted inside the slot 307, an activated carbon block 309 is placed inside the support frame 308, a fan 306 is placed inside the filter tube 305, a sleeve 18 is fixedly connected to the surface of the support frame 308, a screw 19 is threadedly connected inside the sleeve 18, a knob 20 is fixedly connected to one end of the screw 19, a circular groove 23 is opened on the surface of the filter tube 305, one end of the screw 19 is inserted into the circular groove 23, there are two sets of screws 19, the two sets of screws 19 are symmetrically distributed on both sides of the middle of the surface of the filter tube 305, a dustproof net 22 is fixedly connected inside the filter tube 305, the dustproof net 22 is located at the end of the filter plate.

[0028] In this embodiment, the sealing mechanism 3, with sealing cover 301 and sealing cover 302 fitted onto the surfaces of conveying pipe 1 and conveying pipe 2, and the sealing gasket 310 and arc-shaped soft gasket 304, effectively fills the gaps between the sealing covers and between the sealing covers and the conveying pipes, preventing formaldehyde from leaking and spreading to the outside from the pipe joints. Furthermore, a fan 306 installed inside the filter pipe 305 promotes airflow, allowing any potentially leaking formaldehyde gas to pass through the activated carbon block 309 inside the support frame 308. The activated carbon's adsorption properties remove formaldehyde, purifying the air and preventing it from spreading to the surrounding environment, thus reducing the risk of harm to workers. The carrier frame 308 can be easily installed and disassembled via the sleeve 18, screw 19, and knob 20, facilitating the replacement of the activated carbon block 309 and ensuring the continuity of adsorption and purification effects. Two sets of screws 19 are symmetrically distributed on both sides of the center of the filter tube 305 surface, ensuring more even force distribution during installation and fixing of the carrier frame 308. This allows it to be firmly fixed inside the filter tube 305, preventing loosening or displacement even when the fan 306 is running, thus guaranteeing the normal adsorption and purification function of the activated carbon block 309 for formaldehyde. A dustproof mesh 22 is fixedly connected inside the filter tube 305 to prevent external dust and other impurities from entering the filter tube 305.

[0029] Example 2: As Figure 2 - Figure 4 As shown, a retainer 4 is fixedly connected to the surface of sealing cover 301, and a retainer block 5 is fixedly connected to the surface of sealing cover 302. The retainer block 5 is engaged with the retainer 4. A square groove 7 is formed on the surface of the retainer block 5. A first retainer plate 8 and a second retainer plate 10 are slidably connected inside the square groove 7. A spring 9 is fixedly connected between the first retainer plate 8 and the second retainer plate 10. A first pressure rod 11 and a second pressure rod 12 are fixedly connected to the surfaces of the first retainer plate 8 and the second retainer plate 10, respectively. There are two sets of first retainer plates 8, which are symmetrically distributed on both sides of the middle of the surface of sealing cover 302. There are also two sets of second retainer plates 10, which are symmetrically distributed on both sides of the middle of the surface of sealing cover 302. A retainer groove 6 is formed on the surface of the retainer 4, and the retainer groove 6 is aligned with the square groove 7.

[0030] In this embodiment, the engagement of the card holder 4 and the card block 5 facilitates the installation and disassembly of the first sealing cover 301 and the second sealing cover 302, making it convenient for maintenance, repair, or replacement of components such as the sealing gasket 310 of the sealing mechanism 3. The first card plate 8 and the second card plate 10 connected by the spring 9 inside the card block 5, along with the corresponding pressure rod structure, make the connection more secure after engagement, effectively preventing accidental separation of the first sealing cover 301 and the second sealing cover 302 during normal use and ensuring the durability of the sealing effect. The two sets of first card plates 8 and two sets of second card plates 10 are symmetrically distributed on both sides of the middle of the surface of the second sealing cover 302, further strengthening the connection between the first sealing cover 301 and the second sealing cover 302. The alignment of the card groove 6 and the square groove 7 allows the card block 5 and the card holder 4 to engage accurately and smoothly, improving the convenience and accuracy of installation and ensuring that all components cooperate well when the first sealing cover 301 and the second sealing cover 302 are connected, maintaining a good sealing state.

[0031] Example 3: As Figure 2 - Figure 5 As shown, a formaldehyde alarm 13 is fixedly connected to the inner wall of the second sealing cover 302. A slot 14 is opened on the surface of the second sealing cover 302. A rod 15 is fixedly connected to the surface of the second sealing cover 302. The rod 15 is inserted into the inside of the slot 14. A magnet 16 is fixedly connected to the inside of the slot 14. The magnet 16 is magnetically connected to the rod 15. Limiting grooves 17 are opened on the surfaces of the first conveying pipe 1 and the second conveying pipe 2. A limiting rod 21 is fixedly connected to the surface of the first sealing cover 301. The limiting rod 21 is inserted into the inside of the limiting groove 17.

[0032] In this embodiment, a formaldehyde alarm 13 is fixedly connected to the inner wall of the second sealing cover 302, enabling real-time monitoring of the formaldehyde concentration inside the sealing cover. The insertion rod 15, inserted into the slot 14, prevents the first sealing cover 301 and the sealing cover from moving due to accidental collisions, thus maintaining their stability. The magnet 16 magnetically attracts the insertion rod 15, further enhancing the sealing effect of the sealing gasket 310. The limiting rod 21, inserted into the limiting groove 17, effectively limits the position of the first sealing cover 301 relative to the first conveying pipe 1, ensuring that the first sealing cover 301 is accurately installed in the appropriate position on the first conveying pipe 1. This guarantees the accuracy and stability of the overall installation of the sealing mechanism 3, thereby ensuring the normal functioning of its sealing and anti-diffusion capabilities.

[0033] The working principle of this embodiment is as follows: During use, one end of the conveying pipe 1 is connected to the formaldehyde production device. At the junction of the conveying pipe 1 and the conveying pipe 2, a sealing mechanism 3 is used for anti-diffusion treatment. First, the sealing cover 301 and the sealing cover 302 of the sealing mechanism 3 are respectively fitted onto the surfaces of the conveying pipe 1 and the conveying pipe 2. The limiting rod 21 is inserted into the limiting groove 17 to ensure that the sealing cover 301 is accurately positioned, ensuring that the entire sealing mechanism 3 will not move during operation. The sealing cover 302 is inserted into the slot 14 through the insertion rod 15 and connected to the magnet 16. Magnetic connection ensures structural stability and further enhances the sealing effect of the sealing gasket 310 between sealing cover 301 and sealing cover 302. Then, the locking block 5 of sealing cover 302 engages with the locking seat 4 of sealing cover 301. During engagement, the first locking plate 8 and the second locking plate 10, under the action of the spring 9, cooperate with the locking groove 6 to achieve a tight fixation, ensuring a firm connection between sealing cover 301 and sealing cover 302. If disassembly of the sealing mechanism 3 is required, simply press the first pressure rod 11 and the second pressure rod 12. 2. The arc-shaped soft pad inside the upper arc groove 303 works together with the sealing gasket 310 to form a good seal at the pipe joint, preventing formaldehyde from leaking and spreading to the outside. During operation, if a small amount of formaldehyde leaks from the joint into the interior space of the sealed cover, the formaldehyde alarm 13 on the inner wall of the sealed cover 302 will monitor the formaldehyde concentration in real time. When the concentration exceeds the standard, an alarm will be sounded. At the same time, the fan 306 inside the filter tube 305 will start, causing air to circulate inside the sealed cover. The air carries the potentially leaked formaldehyde gas through the support frame 308, and the active material inside the support frame 308... The activated carbon block 309 uses its adsorption properties to adsorb formaldehyde and purify the air. The purified air is then discharged. The dustproof net 22 prevents external dust from entering the filter tube 305 and affecting the adsorption effect of the activated carbon block 309 and the normal operation of the entire device. When the activated carbon block 309 needs to be replaced, the screw 19 can be rotated in the sleeve 18 by rotating the knob 20, so that the screw 19 can be screwed out from the circular groove 23, and then the support frame 308 can be pulled out to easily replace the activated carbon block 309, so as to maintain the continuous and good anti-diffusion and purification functions of the device.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A formaldehyde production anti-diffusion device, comprising a first conveying pipe (1), a second conveying pipe (2), and a sealing mechanism (3), characterized in that: The sealing mechanism (3) includes a sealing cover one (301) and a sealing cover two (302). The sealing cover one (301) and the sealing cover two (302) are sleeved on the surfaces of the conveying pipe one (1) and the conveying pipe two (2). A sealing gasket (310) is provided between the sealing cover one (301) and the sealing cover two (302). A circular arc groove (303) is provided on the surface of the sealing cover one (301) and the sealing cover two (302). An arc-shaped soft pad (304) is provided inside the circular arc groove (303). A filter tube (305) is fixedly connected to the surface of the sealing cover two (302). The filter tube (305) is... The surface of the filter tube (305) has a slot (307), a support frame (308) is inserted inside the slot (307), an activated carbon block (309) is set inside the support frame (308), a fan (306) is set inside the filter tube (305), a sleeve (18) is fixedly connected to the surface of the support frame (308), a screw (19) is threaded inside the sleeve (18), a knob (20) is fixedly connected to one end of the screw (19), a circular groove (23) is opened on the surface of the filter tube (305), and one end of the screw (19) is inserted into the circular groove (23).

2. The formaldehyde production anti-diffusion device according to claim 1, characterized in that: There are two sets of screws (19), and the two sets of screws (19) are symmetrically distributed on both sides of the middle part of the surface of the filter tube (305).

3. The formaldehyde production anti-diffusion device according to claim 1, characterized in that: A dustproof net (22) is fixedly connected inside the filter tube (305), and the dustproof net (22) is located at the end of the filter plate.

4. The formaldehyde production anti-diffusion device according to claim 1, characterized in that: A card seat (4) is fixedly connected to the surface of the first sealing cover (301), and a card block (5) is fixedly connected to the surface of the second sealing cover (302). The card block (5) is engaged with the card seat (4). A square groove (7) is opened on the surface of the card block (5). A first card plate (8) and a second card plate (10) are slidably connected inside the square groove (7). A spring (9) is fixedly connected between the first card plate (8) and the second card plate (10). A first pressure rod (11) and a second pressure rod (12) are fixedly connected to the surfaces of the first card plate (8) and the second card plate (10), respectively.

5. The formaldehyde production anti-diffusion device according to claim 4, characterized in that: There are two sets of the first card plate (8), and the two sets of the first card plate (8) are symmetrically distributed on both sides of the middle part of the surface of the sealing cover (302). There are two sets of the second card plate (10), and the two sets of the second card plate (10) are symmetrically distributed on both sides of the middle part of the surface of the sealing cover (302).

6. The formaldehyde production anti-diffusion device according to claim 5, characterized in that: The surface of the card holder (4) is provided with a card slot (6), which is aligned with the square groove (7).

7. The formaldehyde production anti-diffusion device according to claim 1, characterized in that: A formaldehyde alarm (13) is fixedly connected to the inner wall of the second sealing cover (302).

8. The formaldehyde production anti-diffusion device according to claim 1, characterized in that: The surface of the second sealing cover (302) is provided with a slot (14), and a plug (15) is fixedly connected to the surface of the second sealing cover (302). The plug (15) is inserted into the slot (14).

9. The formaldehyde production anti-diffusion device according to claim 8, characterized in that: A magnet (16) is fixedly connected inside the slot (14), and the magnet (16) is magnetically connected to the insertion rod (15).

10. The formaldehyde production anti-diffusion device according to claim 1, characterized in that: Both the first conveying pipe (1) and the second conveying pipe (2) have a limiting groove (17) on their surfaces. The first sealing cover (301) is fixedly connected to a limiting rod (21), which is inserted into the limiting groove (17).

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