VOCs waste gas treatment device for printing workshop

Abstract

The utility model relates to the technical field of waste gas treatment and discloses a VOCs waste gas treatment device for a printing workshop, the VOCs waste gas treatment device comprises a treatment pipeline, an air inlet and an air outlet are formed in the two ends of the treatment pipeline respectively, a rotating shaft is rotationally arranged in the treatment pipeline through a supporting plate, and the rotating shaft and the treatment pipeline are concentrically arranged. According to the VOCs waste gas treatment device for the printing workshop, when the rotating shaft concentric with the treatment pipeline rotates, the multiple mounting mechanisms can drive the multiple activated carbon plates to rotate in the treatment pipeline, and the rotating activated carbon plates can conduct complete contact adsorption on VOCs waste gas passing through the treatment pipeline; and when the device works, the active carbon can completely adsorb the VOCs waste gas passing through the treatment pipeline, the VOCs waste gas in the treatment pipeline can be fully subjected to contact adsorption without waiting for spreading of the VOCs waste gas, and then the effect of continuously treating the VOCs waste gas can be achieved.

Description

Technical Field

[0001] This application relates to the field of waste gas treatment technology, specifically a VOCs waste gas treatment device for a printing workshop. Background Technology

[0002] With increasingly stringent environmental regulations, industrial waste gas treatment technology has become a key area of ​​environmental protection. As a major source of VOCs (volatile organic compounds), printing workshops require VOCs treatment during emission to ensure compliance with emission standards.

[0003] An existing patent (publication number: CN216440312U) discloses a VOCs purification device for a printing workshop, including a housing. A fixed box is fixedly connected to one side of the housing, and a first motor is fixedly connected to one side of the inner wall of the fixed box. One end of the output shaft of the first motor is fixedly connected to a fixed plate via a short rod, and three activated carbon meshes are snapped onto one side of the fixed plate. A purification box is fixedly connected to the top of one side of the inner wall of the housing, and a vertical pipe is connected to the top of the purification box. A horizontal pipe is connected to one side of the housing. The other side of the fixed plate contacts one side of the inner wall of the housing. The side of the activated carbon mesh away from the fixed plate contacts the inner wall of the housing. An opening is provided at the top of the purification box, and the top of the vertical pipe penetrates the housing and extends to the top of the housing. This invention can quickly and fully treat, convert, and adsorb VOCs in printing workshops, with high efficiency and good effect, better ensuring the emission of waste gas and playing an environmental protection role.

[0004] While the above solution can treat VOCs waste gas, the activated carbon is only distributed in one place inside the box, which cannot completely adsorb and treat the VOCs waste gas inside the box. It is necessary to wait for the VOCs waste gas to spread inside the box, and then the VOCs waste gas needs to stay in the box for a long time to complete the adsorption before the valve is opened to discharge the treated waste gas. Therefore, it cannot provide continuous treatment of VOCs waste gas. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a VOCs waste gas treatment device for printing workshops. This device features the advantage that activated carbon can completely adsorb and treat VOCs waste gas passing through the treatment pipeline during operation, without waiting for the spread of VOCs waste gas, thus enabling continuous treatment of VOCs waste gas. This solves the problem that activated carbon is only distributed in one place within the chamber, failing to completely adsorb and treat VOCs waste gas within the chamber, requiring the VOCs waste gas to spread within the chamber and remain there for a long time to complete adsorption before the valve is opened to discharge the treated waste gas, thus hindering continuous VOCs waste gas treatment.

[0006] To achieve the goal of enabling activated carbon to completely adsorb and treat VOCs waste gas passing through the treatment pipeline during operation, without waiting for the spread of VOCs waste gas, and thus continuously treating VOCs waste gas, this application provides the following technical solution: A VOCs waste gas treatment device for a printing workshop, including a treatment pipeline with an air inlet and an air outlet at both ends. A rotating shaft is rotatably mounted inside the treatment pipeline via a support plate. The rotating shaft and the treatment pipeline are concentrically arranged. Multiple mounting mechanisms are arranged in a circular array on the outer surface of the middle part of the rotating shaft. Activated carbon plates are installed inside each of the mounting mechanisms. The edge of the rotation radius of the mounting mechanism is in contact with the inner wall of the treatment pipeline. A first gear is provided at the end of the rotating shaft near the air outlet. The teeth on the outer surface of the middle part of the first gear mesh with the teeth on the outer surface of the middle part of a second gear. The second gear is mounted on a motor shaft at one end of a motor.

[0007] Through the above scheme, the rotating shaft concentric with the treatment pipeline can drive multiple installation mechanisms to rotate multiple activated carbon plates inside the treatment pipeline. The rotating activated carbon plates can completely contact and adsorb the VOCs waste gas passing through the treatment pipeline. This achieves the effect that the activated carbon can completely adsorb and treat the VOCs waste gas passing through the treatment pipeline when the device is working, without waiting for the spread of VOCs waste gas, and can fully contact and adsorb the VOCs waste gas in the treatment pipeline, thus achieving the effect of continuous treatment of VOCs waste gas.

[0008] Furthermore, the motor is located outside the processing pipe, one end of the motor is disposed at one end of the inner wall of the fixed housing, the fixed housing is disposed on one side of the processing pipe, and the processing pipe has a meshing port on one side corresponding to the fixed housing, and the processing pipe communicates with the fixed housing through the meshing port on one side.

[0009] By using the above solution, the motor is installed inside a fixed housing outside the treatment pipe, which prevents the motor from affecting the smooth passage of VOCs exhaust gas through the treatment pipe and avoids the high-temperature VOCs exhaust gas from blowing directly onto the motor, causing the motor to overheat. The meshing port opened on one side of the treatment pipe allows the second gear connected to the motor shaft at one end of the motor outside the treatment pipe to mesh smoothly with the first gear.

[0010] Furthermore, the first gear is a hollow ring, and the inner wall of the middle part of the first gear is fixedly connected to the outer surface of one end of the rotating shaft by a fixing rod.

[0011] The above solution, by using the hollow annular design of the first gear, can prevent the first gear from affecting the smooth passage of VOCs exhaust gas through the treatment pipeline.

[0012] Furthermore, the installation mechanism includes an installation frame and a cover plate. Positioning frames are provided at both ends of the cover plate. Connecting plates are provided at both ends of the installation frame via fixing blocks. A positioning block is provided at one end of the connecting plate. The positioning block and the positioning frame are interlocked.

[0013] The above solution allows the cover plate to be fixed in position by engaging with the positioning block and the positioning frame. This allows the cover plate to be used with the mounting frame to fix the activated carbon plate. Furthermore, the cover plate can be easily removed from the mounting frame by engaging with the positioning block and the positioning frame, making it easy to replace the activated carbon plate.

[0014] Furthermore, the thickness of the connecting plate is less than the thickness of the positioning block, the connecting plate is made of elastic plastic material, and the top outer surface of the positioning block is inclined.

[0015] The above solution utilizes the elastic plastic material of the connecting plate, allowing it to deform. When the positioning frame moves downward and pushes the top inclined outer surface of the positioning block, it causes the connecting plate to deform, thereby allowing the positioning block to move smoothly downward until it reaches the bottom of the positioning block and engages with it.

[0016] Furthermore, a limiting rod is provided on the side of the cover plate via a fixing plate. The limiting rod is inserted into the inner wall of the middle part of the limiting frame, and the limiting frame is located on the side of the mounting frame.

[0017] The above solution restricts the movement of the cover plate by inserting a limiting rod into the inner wall of the limiting frame, thereby fixing the cover plate's installation position on the mounting frame and improving the stability of the mounting frame in fixing the activated carbon plate with the cover plate.

[0018] Furthermore, a replacement port is provided at the top of the processing pipeline, and a replacement door is provided inside the replacement port at the top of the processing pipeline. Both ends of the replacement door are fixedly connected to the top of the processing pipeline by mounting plates and fixing bolts.

[0019] With the above solution, the activated carbon plate inside the treatment pipeline can be easily replaced by opening the replacement port at the top of the treatment pipeline.

[0020] Furthermore, a sealing gasket is provided between the edge of the processing pipe and the replacement door, and the sealing gasket is located at the top of the processing pipe.

[0021] The above solution improves the sealing between the replacement door and the treatment pipeline by using a sealing gasket, preventing VOCs exhaust gas from leaking between the replacement door and the treatment pipeline.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This VOCs waste gas treatment device for printing workshops uses a rotating shaft concentric with the treatment pipeline. When the shaft rotates, multiple installation mechanisms drive multiple activated carbon plates to rotate within the treatment pipeline. The rotating activated carbon plates can completely contact and adsorb the VOCs waste gas passing through the treatment pipeline. This achieves the effect of continuous VOCs waste gas treatment by ensuring that the activated carbon can completely adsorb and treat the VOCs waste gas passing through the treatment pipeline during operation, without waiting for the spread of VOCs waste gas. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present application;

[0025] Figure 2 This is a schematic diagram of the structure on the right side of this application;

[0026] Figure 3 This is a three-dimensional sectional view of the structure of this application;

[0027] Figure 4 This is a top sectional view of the structure of this application;

[0028] Figure 5 This is a partial exploded view of the structure in this application;

[0029] Figure 6 This is a schematic diagram of the internal structure of the pipeline processed in this application;

[0030] Figure 7 This is an exploded view of the installation mechanism of this application.

[0031] In the picture:

[0032] 1. Pipeline; 101. Air inlet; 102. Air outlet; 2. Rotating shaft; 3. Mounting mechanism; 301. Mounting frame; 302. Cover plate; 4. Activated carbon plate; 5. Positioning frame; 6. Positioning block; 7. Connecting plate; 8. Limiting rod; 9. Limiting frame; 10. First gear; 11. Second gear; 12. Motor; 13. Fixed housing; 14. Sealing gasket; 15. Replacement door. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Please see Figure 1 , Figure 2 and Figure 4 This embodiment of a VOCs waste gas treatment device for a printing workshop includes a treatment pipe 1, with an air inlet 101 and an air outlet 102 at its two ends. A rotating shaft 2 is rotatably mounted inside the treatment pipe 1 via a support plate. The rotating shaft 2 and the treatment pipe 1 are concentrically arranged. Multiple mounting mechanisms 3 are arranged in a ring array on the outer surface of the middle part of the rotating shaft 2. Activated carbon plates 4 are installed inside each of the multiple mounting mechanisms 3. The edge of the rotation radius of the mounting mechanism 3 is in contact with the inner wall of the treatment pipe 1. A first gear 10 is provided at the end of the rotating shaft 2 near the air outlet 102. The teeth on the outer surface of the middle part of the first gear 10 mesh with the teeth on the outer surface of the middle part of the second gear 11. The second gear 11 is mounted on the motor shaft at one end of the motor 12.

[0035] Please see Figure 3 , Figure 4 and Figure 5 The motor 12 is located outside the treatment pipe 1. One end of the motor 12 is set at one end of the inner wall of the fixed housing 13. The fixed housing 13 is set on one side of the treatment pipe 1. The treatment pipe 1 has a meshing port on one side corresponding to the fixed housing 13. The treatment pipe 1 is connected to the fixed housing 13 through the meshing port on one side. By setting the motor 12 inside the fixed housing 13 outside the treatment pipe 1, the setting of the motor 12 can prevent the VOCs exhaust gas from passing smoothly through the treatment pipe 1. It can also prevent the high temperature VOCs exhaust gas from blowing directly onto the motor 12, causing the motor 12 to overheat. The meshing port on one side of the treatment pipe 1 allows the second gear 11 connected to the motor shaft of the motor 12 outside the treatment pipe 1 to mesh smoothly with the first gear 10.

[0036] Please see Figure 2 , Figure 3 and Figure 6 The first gear 10 is a hollow ring. The inner wall of the middle part of the first gear 10 is fixedly connected to the outer surface of one end of the rotating shaft 2 by a fixing rod. The hollow ring of the first gear 10 can prevent the first gear 10 from affecting the smooth passage of VOCs exhaust gas through the treatment pipe 1.

[0037] Please see Figure 3 , Figure 4 and Figure 7 The installation mechanism 3 includes an installation frame 301 and a cover plate 302. Both ends of the cover plate 302 are provided with positioning frames 5. Both ends of the installation frame 301 are provided with connecting plates 7 through fixing blocks. One end of the connecting plate 7 is provided with a positioning block 6. The positioning block 6 and the positioning frame 5 are interlocked. The position of the cover plate 302 can be fixed by the interlocking of the positioning block 6 and the positioning frame 5, so that the cover plate 302 can be used with the installation frame 301 to fix the activated carbon plate 4. Furthermore, the cover plate 302 can be easily removed from the installation frame 301 by the cooperation of the positioning block 6 and the positioning frame 5, so that the activated carbon plate 4 can be easily replaced.

[0038] Please see Figure 3 , Figure 4 and Figure 7 The thickness of the connecting plate 7 is less than the thickness of the positioning block 6. The connecting plate 7 is made of elastic plastic. The top outer surface of the positioning block 6 is inclined. The elastic plastic material of the connecting plate 7 allows it to deform. When the positioning frame 5 moves downward and pushes the inclined top outer surface of the positioning block 6, it can cause the connecting plate 7 to deform. This allows the position of the positioning block 6 to be moved by the pushing of the positioning frame 5. The positioning frame 5 can move downward smoothly until it moves to the bottom of the positioning block 6 and engages with it.

[0039] Please see Figure 3 , Figure 4 and Figure 7 The side of the cover plate 302 is provided with a limiting rod 8 through a fixing plate. The limiting rod 8 is inserted into the inner wall of the middle part of the limiting frame 9. The limiting frame 9 is set on the side of the mounting frame 301. By inserting the limiting rod 8 into the inner wall of the limiting frame 9, the movement position of the cover plate 302 can be restricted, thereby fixing the installation position of the cover plate 302 on the mounting frame 301 and improving the stability of the mounting frame 301 and the cover plate 302 in fixing the activated carbon plate 4.

[0040] Please see Figure 1 , Figure 2 and Figure 5The top of the treatment pipe 1 is provided with a replacement port, and a replacement door 15 is provided inside the replacement port at the top of the treatment pipe 1. Both ends of the replacement door 15 are fixedly connected to the top of the treatment pipe 1 by mounting plates and fixing bolts. By opening the replacement door 15 at the top of the treatment pipe 1, the activated carbon plate 4 inside the treatment pipe 1 can be easily replaced through the replacement port at the top of the treatment pipe 1.

[0041] Please see Figure 1 , Figure 2 and Figure 5 A sealing gasket 14 is provided between the edge of the treatment pipe 1 and the replacement door 15. The sealing gasket 14 is located at the top of the treatment pipe 1. The sealing gasket 14 can improve the sealing between the replacement door 15 and the treatment pipe 1, and prevent VOCs exhaust gas from leaking between the replacement door 15 and the treatment pipe 1.

[0042] In this embodiment, a VOCs waste gas treatment device for a printing workshop is provided. When the rotating shaft 2, which is concentric with the treatment pipe 1, rotates, multiple mounting mechanisms 3 drive multiple activated carbon plates 4 to rotate within the treatment pipe 1. The rotating activated carbon plates 4 can completely contact and adsorb the VOCs waste gas passing through the treatment pipe 1. This achieves the effect that the activated carbon can completely adsorb and treat the VOCs waste gas passing through the treatment pipe 1 during operation, without waiting for the spread of VOCs waste gas, and can thus continuously treat the VOCs waste gas.

[0043] The working principle of the above embodiment is as follows: The VOCs waste gas to be treated enters the interior of the treatment pipe 1 through the air inlet 101. The motor 12 works, driving the second gear 11 to rotate, which in turn drives the first gear 10 to rotate. When the first gear 10 rotates, it drives the rotating shaft 2 to rotate. The rotating shaft 2 drives the activated carbon plate 4 to rotate inside the treatment pipe 1 through the mounting mechanism 3, so that the multiple activated carbon plates 4 arranged in an array on the outside of the rotating shaft 2 can completely contact the VOCs waste gas passing through the treatment pipe 1, thereby completely adsorbing and treating the VOCs waste gas passing through the treatment pipe 1. The treated VOCs waste gas can be discharged from the air outlet 102 of the treatment pipe 1, thus continuously treating the VOCs waste gas. When it is necessary to replace the activated carbon plate 4, the fixing bolts on the fixing plates at both ends of the replacement door 15 are removed, and the replacement door 15 is opened from the replacement port at the top of the treatment pipe 1. Remove the top of the treatment pipe 1 to expose the replacement port. Use the replacement port at the top of the treatment pipe 1 to move the positioning blocks 6 at both ends of the mounting frame 301, causing the corresponding connecting plate 7 to deform. This releases the connection between the positioning block 6 and the positioning frame 5, thereby releasing the restriction on the cover plate 302. Remove the cover plate 302 from the mounting frame 301. Take out the activated carbon plate 4 that needs to be replaced from the mounting frame 301 and install the new activated carbon plate 4 into the mounting frame 301. Move the cover plate 302 downward from the top of the mounting frame 301, causing one side of the inner wall of the positioning frame 5 to push the top inclined outer surface of the positioning block 6. This causes the positioning block 6 to deform and move the connecting plate 7, thus displacing the positioning block 6. The positioning frame 5 can then be placed on the outside of the positioning block 6 and moved downward to below the positioning block 6. Subsequently, the connecting plate 7 deforms and resets, causing the positioning block 6 to reset and lock onto the top of the positioning frame 5, thus completing the fixation of the cover plate 302.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for the treatment of VOCs exhaust air from a printing plant, comprising a treatment duct (1), characterized in that: The two ends of the processing pipe (1) are an air inlet (101) and an air outlet (102), respectively. The processing pipe (1) has a rotating shaft (2) rotatably mounted inside it via a support plate. The rotating shaft (2) and the processing pipe (1) are concentrically mounted. Multiple mounting mechanisms (3) are arranged in a ring array on the outer surface of the middle part of the rotating shaft (2). Activated carbon plates (4) are installed inside each of the multiple mounting mechanisms (3). The edge of the rotation radius of the mounting mechanism (3) is in contact with the inner wall of the processing pipe (1). A first gear (10) is provided at the end of the rotating shaft (2) near the air outlet (102). The teeth on the outer surface of the middle part of the first gear (10) mesh with the teeth on the outer surface of the middle part of the second gear (11). The second gear (11) is mounted on the motor shaft at one end of the motor (12).

2. A printing plant VOCs exhaust gas treatment device according to claim 1, characterized in that: The motor (12) is located outside the processing pipe (1). One end of the motor (12) is set at one end of the inner wall of the fixed housing (13). The fixed housing (13) is set on one side of the processing pipe (1). The processing pipe (1) has a meshing port on one side corresponding to the fixed housing (13). The processing pipe (1) is connected to the fixed housing (13) through the meshing port on one side.

3. A VOCs exhaust treatment device for a printing plant according to claim 1, characterized in that: The first gear (10) is a hollow ring, and the inner wall of the middle part of the first gear (10) is fixedly connected to the outer surface of one end of the rotating shaft (2) through a fixing rod.

4. The printing plant VOCs exhaust gas treatment device according to claim 1, characterized in that: The installation mechanism (3) includes an installation frame (301) and a cover plate (302). Both ends of the cover plate (302) are provided with positioning frames (5). Both ends of the installation frame (301) are provided with connecting plates (7) through fixing blocks. One end of the connecting plate (7) is provided with a positioning block (6). The positioning block (6) and the positioning frame (5) are interlocked.

5. A printing plant VOCs exhaust air treatment device according to claim 4, characterized in that: The thickness of the connecting plate (7) is less than the thickness of the positioning block (6). The connecting plate (7) is made of elastic plastic material, and the top outer surface of the positioning block (6) is inclined.

6. A printing plant VOCs exhaust gas treatment device according to claim 4, characterized in that: The side of the cover plate (302) is provided with a limiting rod (8) through a fixing plate. The limiting rod (8) is inserted into the inner wall of the middle part of the limiting frame (9). The limiting frame (9) is provided on the side of the mounting frame (301).

7. A VOCs exhaust treatment device for a printing plant according to claim 1, characterized in that: The top of the processing pipe (1) is provided with a replacement port, and a replacement door (15) is provided inside the replacement port at the top of the processing pipe (1). Both ends of the replacement door (15) are fixedly connected to the top of the processing pipe (1) by mounting plates and fixing bolts.

8. A VOCs exhaust treatment device for a printing plant according to claim 1, characterized in that: A sealing gasket (14) is provided between the edge of the processing pipe (1) and the replacement door (15), and the sealing gasket (14) is located on the top of the processing pipe (1).

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