Printing waste gas discharge system
By designing a dust reduction chamber with a filter below the water surface in the printed exhaust gas emission system, combining the cover plate and exhaust pipe, the problems of poor dust reduction and high maintenance frequency of the existing system are solved, and efficient waste gas dust reduction and clean gas are achieved Emissions ensure the quality and production efficiency of printed materials.
Patent Information
- Application Number
- CN202420986921.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The existing printing waste gas emission systems have problems such as insufficient economical efficiency, high maintenance frequency and low operating reliability in terms of dust reduction effects, resulting in the impact of printed materials quality and air pollution.
A system consisting of a waste discharge pipe and a dust reduction chamber is designed. The filter is located below the water surface. The waste gas enters the dust reduction chamber through the waste discharge pipe and contacts the water. The filter disperses large-diameter bubbles, increases the contact area between the waste gas and water, and combines with the cover. The plates and exhaust pipes achieve clean gas emissions to avoid problems such as blockage and high maintenance frequency.
It achieves efficient waste gas dust reduction effect, prevents paper dust from sticking to the printing resin plate, ensures the quality and production efficiency of printed materials, and reduces air pollution and maintenance frequency, and improves the economic and reliability of the system.
Smart Images
Figure CN222219014U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of printing waste discharge, and in particular relates to a printing waste gas discharge system. Background Art
[0002] When producing paper printed products, a fan is generally installed at the exhaust port of the printing equipment, and the printing waste gas is directly discharged by suction from the fan. A small amount of paper scraps and dust will be mixed in the printing waste gas. If the waste gas is directly discharged into the workshop, over a long period of time, the paper scraps and dust in the waste gas will adhere to the printing resin plate and cause printing leakage problems, affecting the quality of the printed products. Operators are required to regularly stop the machine to wipe the printing resin plate, affecting production efficiency. If the waste gas is directly discharged to the outside of the workshop through a pipe, there will be air pollution over a long period of time. Therefore, some dust reduction methods are used in the prior art when discharging waste. Considering the economy and the characteristics of printing waste gas, the more commonly used method is water dust removal. Among them, although the spray dust removal has a more ideal dust reduction effect under normal use, its spray distance is relatively short, the nozzle aperture is small, and it is easy to get clogged and affect the dust reduction effect, and the maintenance frequency is high. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a printing waste gas emission system which ensures dust reduction effect, has high economy, lower maintenance frequency and higher operation reliability.
[0004] The content of the utility model includes a waste discharge pipe and a dust reduction chamber, one end of the waste discharge pipe is connected to the exhaust outlet of the printing equipment, and the other end extends into the dust reduction chamber, a filter is arranged in the dust reduction chamber, and the position of the filter is higher than the end of the waste discharge pipe extending into the dust reduction chamber, an exhaust port is arranged on the dust reduction chamber, and the position of the exhaust port is higher than the position of the filter, when the waste gas enters the dust reduction chamber along the waste discharge pipe, water is stored in the dust reduction chamber, and the liquid level of the water is higher than the filter and lower than the exhaust port.
[0005] Furthermore, the filter screen is detachably arranged in the dust reduction chamber.
[0006] Furthermore, the top of the dust removal chamber is open to form an exhaust port.
[0007] Furthermore, a hook for hooking the top or inner wall of the dust reduction chamber is arranged on the side of the filter screen, and the filter screen is suspended in the dust reduction chamber by the hook.
[0008] Furthermore, it also includes a cover plate, which is detachably arranged on the top of the dust reduction chamber, and an exhaust pipe is arranged on the cover plate.
[0009] Furthermore, the exhaust pipe extends to the outside of the workshop.
[0010] Furthermore, one end of the waste discharge pipe extending into the dust reduction chamber extends from the side of the dust reduction chamber, and the end of the waste discharge pipe is arranged downward in the dust reduction chamber, and a gap for the waste discharge pipe to pass through is arranged on one side of the filter screen.
[0011] Furthermore, the printing equipment has more than two waste gas outlets or the printing equipment is provided with more than two, the waste exhaust pipe includes a waste exhaust main pipe and more than two waste exhaust branch pipes, one end of the two or more waste exhaust branch pipes is connected to all the waste gas outlets of the printing equipment or to the waste gas outlets of more than two printing equipment, the other end of the two or more waste exhaust branch pipes is connected to one end of the waste exhaust main pipe, and the other end of the waste exhaust main pipe extends into the dust reduction chamber.
[0012] Furthermore, the dust reduction chamber is also provided with a water inlet and a drain outlet, the water inlet is located higher than the filter screen, and the drain outlet is arranged at the bottom of the dust reduction chamber.
[0013] Furthermore, the exhaust gas outlet of the printing equipment is provided with a fan, and the exhaust gas is transported into the dust reduction chamber along the exhaust pipe through the fan.
[0014] The beneficial effect of the utility model is that since the end of the waste discharge pipe extending into the dust reduction chamber is located below the filter, that is, the end of the waste discharge pipe extending into the dust reduction chamber is also immersed in water and located below the filter, the exhaust gas is passed into the water when it is transported along the waste discharge pipe to the dust reduction chamber, the exhaust gas directly contacts the water and moves upward in the water, and the paper scraps and dust absorb water and settle. Due to the setting of the filter, the large-diameter bubbles generated by the exhaust gas in the water can be dispersed. Even if the amount of exhaust gas introduced per unit time is large, the contact area between the exhaust gas and the water can be increased as much as possible to ensure the dust reduction effect, so that the gas finally discharged from the water surface has higher cleanliness, and a good exhaust gas emission dust reduction effect is achieved, which avoids the paper scraps and dust in the exhaust gas from adhering to the printing resin plate and affecting the printing quality, thereby ensuring the printing quality and efficiency, and also avoids direct discharge to the outside of the workshop to cause air pollution. The overall structure is simple and has high economy. Since the function of the filter is to disperse water bubbles, its aperture size requirement will inevitably be larger than the spray nozzle aperture. Compared with the spray dust removal method, the utility model is not prone to the problem of reduced dust removal effect or failure of normal dust removal due to blockage on the basis of ensuring good exhaust gas emission dust reduction effect. The maintenance frequency is lower and the operation reliability is higher. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] Figure 2 It is a schematic diagram of the structure of the dust reduction chamber of the utility model from a top view.
[0017] Figure 3 This is a schematic diagram of the connection between the waste discharge pipe and the printing equipment of the utility model.
[0018] In the figure: 1. Printing equipment; 2. Fan; 3. Waste discharge branch pipe; 4. Merging pipe; 5. Waste discharge main pipe; 6. Dust reduction chamber; 7. Filter; 8. Cover plate; 9. Exhaust pipe. DETAILED DESCRIPTION
[0019] like Figure 1-Figure 3 As shown, the utility model provides a printing waste gas emission system, including a waste discharge pipe and a dust reduction chamber 6, one end of the waste discharge pipe is connected to the waste gas discharge port of the printing device 1, and the other end extends into the dust reduction chamber 6, and the waste gas of the printing device 1 is transported to the dust reduction chamber 6 along the waste discharge pipe. A filter screen 7 is arranged in the dust reduction chamber 6, and the position of the filter screen 7 is higher than the end of the waste discharge pipe extending into the dust reduction chamber 6, that is, the end of the waste discharge pipe extending into the dust reduction chamber 6 is located below the filter screen 7, and an exhaust port is arranged on the dust reduction chamber 6, and the position of the exhaust port is higher than the position of the filter screen 7. When the waste gas enters the dust reduction chamber 6 along the waste discharge pipe, water is stored in the dust reduction chamber 6, and the liquid level of the water is higher than the filter screen 7 and lower than the exhaust port.
[0020] When the utility model is in use, water of a certain liquid level is stored in the dust reduction chamber 6 to keep the filter screen 7 immersed in water and the water will not flow out along the exhaust port. Since one end of the exhaust pipe extending into the dust reduction chamber 6 is located below the filter screen 7, that is, one end of the exhaust pipe extending into the dust reduction chamber 6 is also immersed in water and located below the filter screen 7, the exhaust gas is passed into the water when it is transported into the dust reduction chamber 6 along the exhaust pipe. The exhaust gas directly contacts with the water and moves upward in the water. Paper scraps and dust settle after absorbing water. Due to the setting of the filter screen 7, the large-diameter bubbles generated by the exhaust gas in the water can be dispersed. Even if the amount of exhaust gas introduced per unit time is large, the contact area between the exhaust gas and the water can be increased as much as possible to ensure the dust reduction effect, so that the gas finally discharged from the water surface has a higher cleanliness, and a good exhaust gas emission dust reduction effect is achieved, so as to avoid the paper scraps and dust in the exhaust gas from adhering to the printing resin plate and affecting the printing quality, thereby ensuring the printing quality and efficiency, and also avoiding direct discharge to the outside of the workshop to cause air pollution. The overall structure is simple and has high economy. Since the function of the filter 7 is to disperse water bubbles, its aperture size requirement will inevitably be larger than the spray nozzle aperture. Compared with the spray dust removal method, the utility model is not prone to the problem of reduced dust removal effect or failure of normal dust removal due to blockage on the basis of ensuring good exhaust gas emission dust reduction effect. The maintenance frequency is lower and the operation reliability is higher.
[0021] In the present invention, the filter screen 7 is detachably arranged in the dust removal chamber 6. This arrangement makes it easy to replace filter screens 7 with different apertures, and to remove the filter screen 7 during regular maintenance of the equipment to clean the inside of the dust removal chamber 6 and the filter screen 7.
[0022] The top of the dust removal chamber 6 is open, so that an exhaust port is formed at the top of the dust removal chamber 6. This arrangement can save the need for an additional exhaust port, and can facilitate the direct disassembly and assembly of the filter screen 7 through the top of the dust removal chamber 6.
[0023] The filter screen 7 is provided with a hook on the side thereof, and the hook is used to hook the top or inner wall of the dust removal chamber 6. When the hook is hooked on the top or inner wall of the dust removal chamber 6, the filter screen 7 is in a suspended state and is located inside the dust removal chamber 6, that is, the filter screen 7 is suspended in the dust removal chamber 6 by the hook. When the filter screen 7 needs to be removed, the hook is removed and the filter screen 7 is lifted out as a whole. This arrangement makes the disassembly and assembly of the filter screen 7 more convenient and quick, eliminates the use of fixings, and reduces the complexity of the structure. Among them, when the hook is hooked on the inner wall of the dust removal chamber 6 to suspend the filter screen 7 in the dust removal chamber 6, the inner wall of the dust removal chamber 6 is provided with a corresponding groove for cooperating with the hook. The hook has a certain length to ensure that the filter screen 7 can be lowered into the water. A circle of metal edging is provided on the outer edge of the filter screen 7. The setting of the metal edging can, on the one hand, ensure the structural strength of the filter screen 7 as a whole, and on the other hand, can play the role of a counterweight for the filter screen 7, ensuring that the filter screen 7 as a whole can be immersed in water. If the filter screen 7 is suspended on the water surface, a counterweight block can be hung below the filter screen 7 to make it sink into the water.
[0024] The utility model also includes a cover plate 8, which is detachably arranged on the top of the dust removal chamber 6, that is, the cover plate 8 is arranged on the exhaust port, and an exhaust pipe 9 is arranged on the cover plate 8, and the exhaust pipe 9 is connected to the exhaust port. By arranging the cover plate 8 and the exhaust pipe 9, the exhaust pipe 9 can be used to discharge clean gas to other places, so as to avoid dust in the workshop during exhaust and dust adhesion on the printed resin plate. The detachable arrangement of the cover plate 8 can be directly covered on the top of the dust removal chamber 6. When there is a certain sealing requirement between the cover plate 8 and the dust removal chamber 6, a circle of rubber can be arranged on the side of the cover plate 8 that is used to contact the top of the dust removal chamber 6 to increase the sealing performance of the cover plate 8 when covering the top of the dust removal chamber 6. Specifically, the end of the exhaust pipe 9 can extend to the outside of the workshop, that is, exhaust to the outside of the workshop. When the end of the exhaust pipe 9 extends to the outside of the workshop, the exhaust pipe 9 is preferably a hose, that is, it has a certain bending ability, such as a corrugated pipe, so that the cover plate 8 can have space to move when the exhaust pipe 9 is connected.
[0025] The end of the waste discharge pipe extending into the dust reduction chamber 6 is extended from the side of the dust reduction chamber 6, and this end of the waste discharge pipe is arranged downward in the dust reduction chamber 6. A notch is arranged on one side of the filter screen 7 for the waste discharge pipe to pass through, so that when the filter screen 7 is arranged in the dust reduction chamber 6, it can avoid the end of the waste discharge pipe extending into the dust reduction chamber 6 to avoid interference.
[0026] When there are more than two exhaust gas outlets of the printing equipment 1 in the workshop or more than two printing equipment 1 are provided, such as Figure 3As shown, the waste discharge pipe includes a waste discharge main pipe 5 and two or more waste discharge branch pipes 3, one end of the two or more waste discharge branch pipes 3 is connected to all the waste gas outlets of the printing device 1 or to the waste gas outlets of two or more printing devices 1, and the other end of the two or more waste discharge branch pipes 3 is connected to one end of the waste discharge main pipe 5 through the confluence pipe 4, and the other end of the waste discharge main pipe 5 extends into the dust removal chamber 6 to achieve centralized discharge of waste gas and dust reduction. Based on the above content, it can be known that due to the dust reduction method provided by the utility model, even if the amount of waste gas introduced per unit time is large, the contact area between the waste gas and water can be increased as much as possible to ensure the dust reduction effect. Therefore, in this setting method, although the number of connected waste gas outlets is large and the amount of waste gas increases, the same dust removal chamber 6 can also achieve a good dust removal effect, and the cost is controlled on the basis of ensuring the dust removal effect.
[0027] In the utility model, each exhaust gas outlet is provided with a fan 2, and the exhaust gas is transported to the dust reduction chamber 6 along the exhaust pipe through the fan 2.
[0028] The dust removal chamber 6 is also provided with a water inlet and a drain. The position of the water inlet is higher than the position of the filter screen 7, and the drain is provided at the bottom of the dust removal chamber 6. The water inlet is specifically connected to the water supply device through a water inlet pipe, and the drain is connected to the return water treatment device through a drain pipe. A valve may be provided on the drain or the drain pipe. When using the dust removal chamber 6, the following methods may be selected: closing the drain through a valve, using a water supply device to inject water of a certain liquid level into the dust removal chamber 6 along the water inlet, and then stopping the water supply; or keeping the water supply device and the valve open, injecting water and draining water simultaneously, and maintaining the dynamic balance of the water level in the dust removal chamber 6.
[0029] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.
[0030] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.
Claims
1. A printing waste gas emission system, characterized in that: The invention comprises a waste discharge pipe and a dust reduction chamber (6), wherein one end of the waste discharge pipe is connected to the waste gas discharge port of the printing device (1), and the other end extends into the dust reduction chamber (6); a filter screen (7) is arranged in the dust reduction chamber (6), and the position of the filter screen (7) is higher than the end of the waste discharge pipe extending into the dust reduction chamber (6); an exhaust port is arranged on the dust reduction chamber (6), and the position of the exhaust port is higher than the position of the filter screen (7); when the waste gas enters the dust reduction chamber (6) along the waste discharge pipe, water is stored in the dust reduction chamber (6), and the liquid level of the water is higher than the filter screen (7) and lower than the exhaust port.
2. The printing waste gas emission system according to claim 1, characterized in that: The filter screen (7) is detachably arranged in the dust removal chamber (6).
3. The printing waste gas emission system according to claim 2, characterized in that: The top of the dust removal chamber (6) is open, forming an exhaust port.
4. The printing waste gas emission system according to claim 3, characterized in that: A hook for hooking onto the top or inner wall of the dust removal chamber (6) is provided on the side of the filter screen (7), and the filter screen (7) is suspended in the dust removal chamber (6) via the hook.
5. The printing waste gas emission system according to claim 3 or 4, characterized in that: It also comprises a cover plate (8), wherein the cover plate (8) is detachably arranged on the top of the dust reduction chamber (6), and an exhaust pipe (9) is arranged on the cover plate (8).
6. The printing waste gas emission system according to claim 5, characterized in that: The exhaust pipe (9) extends to the outside of the workshop.
7. The printing waste gas emission system according to any one of claims 1 to 4 and 6, characterized in that: One end of the waste discharge pipe extending into the dust reduction chamber (6) extends from the side of the dust reduction chamber (6), and the end of the waste discharge pipe is arranged downward in the dust reduction chamber (6), and a notch is arranged on one side of the filter screen (7) for the waste discharge pipe to pass through.
8. The printing waste gas emission system according to any one of claims 1 to 4 and 6, characterized in that: The printing device (1) has more than two exhaust outlets or the printing device (1) is provided with more than two exhaust outlets, the exhaust pipe comprises a exhaust main pipe (5) and more than two exhaust branch pipes (3), one end of the two or more exhaust branch pipes (3) is connected to all the exhaust outlets of the printing device (1) or to the exhaust outlets of more than two printing devices (1), the other end of the two or more exhaust branch pipes (3) is connected to one end of the exhaust main pipe (5), and the other end of the exhaust main pipe (5) extends into the dust removal chamber (6).
9. The printing waste gas emission system according to any one of claims 1 to 4 and 6, characterized in that: The dust removal chamber (6) is also provided with a water inlet and a water outlet, the water inlet is located higher than the filter screen (7), and the water outlet is provided at the bottom of the dust removal chamber (6).
10. The printing waste gas emission system according to any one of claims 1 to 4 and 6, characterized in that: The exhaust gas outlet of the printing device (1) is provided with a fan (2), and the exhaust gas is transported along the exhaust pipe into the dust reduction chamber (6) through the fan (2).