Device for unorganized VOCs waste gas collection of factory building

Abstract

The utility model discloses a device for unorganized VOCs (volatile organic compounds) waste gas collection in a plant. The device comprises a gas collection cabinet body, a gas collection port is formed in the top surface of the gas collection cabinet body and is at least used for sealing connection with a gas collection pipe, and the gas collection pipe is used for being connected with gas extraction equipment to form negative pressure in the gas collection cabinet body; a first cabinet door and a second cabinet door which can be opened and closed independently are arranged on the side surface of the gas collection cabinet body; two groups of vertically arranged blowing holes are formed in the gas collection cabinet body and are connected with a gas source; and when the first cabinet door and the second cabinet door are opened, the two groups of blowing holes are respectively used for blowing air at the first cabinet door opening and the second cabinet door opening to form airflow walls. The device can be applied to industries such as plastic film printing and the like, and can effectively collect and treat the problem of unorganized discharge in procedures such as an ink hopper and a glue stirring barrel.

Description

TECHNICAL FIELD

[0001] The utility model relates to volatile organic compounds (VOCs) collection technical field, specifically related to a device for unorganized VOCs waste gas collection of factory building. BACKGROUND

[0002] Some unorganized emission processes in production process, for example, ink hopper under the printing cylinder, usually in the completely open state, VOCs volatilization is more serious, some manufacturers in the plant, VOCs concentration in the air even reaches 1000ppm or more, for this, improving unorganized VOCs waste gas collection is also the path that should be considered to reduce the VOCs emission of factory area.

[0003] The patent specification with the publication number CN215941013U discloses a liftable printing workshop VOC waste gas collection device, which comprises a collection cover, a soft curtain is fixedly installed at the bottom end of the collection cover, a magnet is fixedly installed at the bottom surface of the soft curtain, and a first connecting pipe is fixedly connected to the top end of the collection cover. The liftable printing workshop VOC waste gas collection device, through the mutual cooperation of the soft curtain, the magnet, the flexible hose, the gear reduction motor and the rack, the gear reduction motor drives the rack to lift, thereby driving the collection cover to adjust the height, increasing the device for conveniently adjusting the height of the waste gas collection device, achieving the goal of conveniently adjusting the height of the equipment, achieving the effect of conveniently collecting all the gas of the equipment, avoiding the situation that the overflow of waste gas leads to environmental pollution, avoiding the situation that the overflow of gas is not conducive to the health of workers, improving the collection effect and meeting the use requirements of users.

[0004] The above-mentioned patent technology uses the magnet to attract the soft curtain to better prevent gas overflow. However, in the actual printing process, the printing cylinder is a component on the printing equipment, and since the printing workpiece is continuously printed through the cylinder, the printing work cannot be completely closed. The soft curtain and other components provided in the above-mentioned patent technology will hinder the continuous printing work. UTILITY MODEL CONTENT

[0005] In view of the above technical problems, the utility model provides a device for unorganized VOCs waste gas collection of factory building, which can be applied to the plastic film printing industry and can effectively collect and process the unorganized emission problems existing in the ink hopper and glue stirring barrel and other processes.

[0006] The specific technical solutions are as follows:

[0007] A device for unorganized VOCs waste gas collection of factory building, comprising a gas collection cabinet body.

[0008] The gas collection cabinet body is provided with a gas inlet on the top surface, and the gas inlet is connected to a gas collection pipe for connecting a gas extraction device to form a negative pressure in the gas collection cabinet body.

[0009] The side surface of the gas collection cabinet body is provided with a first cabinet door and a second cabinet door which can be independently opened and closed. Two groups of vertical blowing holes are arranged in the gas collection cabinet body, and the blowing holes are connected to a gas source. When the first cabinet door and the second cabinet door are opened, the two groups of blowing holes are used to blow air to form an air flow wall at the first cabinet door opening and the second cabinet door opening.

[0010] The first cabinet door and the second cabinet door can be independently opened and closed, for example, the first cabinet door and the second cabinet door can be opened at the same time, which is convenient for the workpiece to pass through the gas collection cabinet body and does not affect the continuous production operation in the factory building. At this time, the blowing holes blow air to form an air flow wall at the first cabinet door opening and the second cabinet door opening, and cooperate with the strong negative pressure formed by the gas inlet connected to the gas collection pipe through the gas extraction device to prevent the VOCs in the gas collection cabinet body from escaping from the first cabinet door opening and the second cabinet door opening. In addition, during the preparation stage, the first cabinet door and the second cabinet door can be closed at the same time to form a good sealing effect, so that the VOCs emitted during the preparation process will not escape, which is convenient for centralized collection. At this time, the blowing holes can continuously supply air to cooperate with the gas extraction device to promote the removal of VOCs.

[0011] The gas source connected to the blowing holes can be an additional gas source added to the factory building, or a gas source originally existing in the factory building. For example, some factory buildings perform a film blowing process, which usually uses compressed air. The compressed air can be used as a gas source for the blowing holes.

[0012] In some embodiments, the device for collecting unorganized VOCs waste gas in a factory building, the bottom surface of the gas collection cabinet body can be in an open state, so that the unorganized VOCs waste gas emission source in the factory building is covered in the gas collection cabinet body. Further, the shape, size, etc. of the gas collection cabinet body and the opening of the bottom surface can be designed based on the characteristics of the unorganized VOCs waste gas emission source in the factory building. The gas collection cabinet body can also be specifically covered on the unorganized VOCs waste gas emission source in the factory building to strengthen the gas collection effect.

[0013] In some embodiments, the device for collecting unorganized VOCs waste gas in a factory building, the bottom surface of the gas collection cabinet body can be in an open state, so that the unorganized VOCs waste gas emission source in the factory building is covered in the gas collection cabinet body. Further, the shape, size, etc. of the gas collection cabinet body and the opening of the bottom surface can be designed based on the characteristics of the unorganized VOCs waste gas emission source in the factory building. The gas collection cabinet body can also be specifically covered on the unorganized VOCs waste gas emission source in the factory building to strengthen the gas collection effect.

[0014] In some embodiments, the device for collecting unorganized VOCs waste gas in a factory building, the side surface of the gas collection cabinet body is sealed and mounted with a rubber glove. Further, the rubber glove can be inserted into the gas collection cabinet body to facilitate the operation of workers. For example, when the first cabinet door and the second cabinet door are closed, workers can operate through the rubber glove.

[0015] In some embodiments, the device for collecting unorganized VOCs exhaust gas of a factory building, the gas collecting cabinet body can be a cuboid.

[0016] In some embodiments, the device for collecting unorganized VOCs exhaust gas of a factory building, the first cabinet door and the second cabinet door are respectively arranged at the front and rear of the gas collecting cabinet body; the two groups of air blowing holes are arranged on the left side or the right side of the gas collecting cabinet body, or the two groups of air blowing holes are respectively arranged on the left side and the right side of the gas collecting cabinet body.

[0017] In some embodiments, the device for collecting unorganized VOCs exhaust gas of a factory building, the two groups of air blowing holes are respectively close to the first cabinet door and the second cabinet door.

[0018] In some embodiments, the device for collecting unorganized VOCs exhaust gas of a factory building, the first cabinet door and the second cabinet door can be provided with air sealing seals; when the first cabinet door and the second cabinet door are closed, the air sealing seals block part of the air blowing holes, that is, part of the air blowing holes are not blocked by the air sealing seals and still maintain air blowing, which can promote the VOCs to be removed in cooperation with the air extraction equipment. In some preferred examples, when the first cabinet door and the second cabinet door are closed, the air blowing holes not blocked by the air sealing seals include the air blowing holes at the lowest position, which is beneficial to carrying the VOCs to flow upward, so that the VOCs can be better collected.

[0019] In some embodiments, the device for collecting unorganized VOCs exhaust gas of a factory building, one air sealing seal corresponds to one air blowing hole, and the number of the air sealing seals is less than the number of the air blowing holes, so that the air blowing holes are not completely blocked by the air sealing seals. For example, the air sealing seals have two groups, which respectively correspond to a group of air blowing holes close to the air sealing seals, and the number of the air sealing seals in each group is less than the number of the air blowing holes in the corresponding group.

[0020] In some embodiments, the device for collecting unorganized VOCs exhaust gas of a factory building, the gas collecting port can be sealingly connected to the gas collecting main pipe through the gas collecting pipe. Further, the gas collecting main pipe can be connected to the air extraction fan, so that the negative pressure is formed in the gas collecting cabinet body by air extraction. The gas collecting main pipe can lead to the exhaust gas treatment unit.

[0021] In some embodiments, the device for collecting unorganized VOCs exhaust gas of a factory building, the top surface of the gas collecting cabinet body can be partially or entirely transparent, which is convenient for workers to observe.

[0022] Compared with the prior art, the device has the following beneficial effects:

[0023] The device does not need additional energy consumption, only needs to simply and appropriately transform the unorganized emission process in the factory building with the film blowing process (pressure air source), increase the gas collecting cabinet body, and match the corresponding pipeline, so that the unorganized emission can be limited, and the VOCs collection efficiency can be improved.

[0024] The utility model has no influence on the process of other equipment in the factory building. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 It is structural diagram of one kind for factory building unorganized VOCs waste gas collection's device cabinet door open state in the specific embodiment;

[0026] Fig. 2 It is structural diagram of one kind for factory building unorganized VOCs waste gas collection's device cabinet door closed state in the specific embodiment;

[0027] Fig. 3 It is structural diagram of one kind for factory building unorganized VOCs waste gas collection's device and factory building gas collection header connection in the specific embodiment. DETAILED DESCRIPTION

[0028] The utility model will be further described below in combination with the drawings and specific embodiments. It should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model.

[0029] The terms such as "connection", "installation", "provided with" in the utility model should be understood in a broad sense, which can be fixed connection, can be detachable connection, can be rigid connection, can be flexible connection, and the person skilled in the art can understand the meaning of the above terms in the utility model according to the specific situation.

[0030] Referring to Figs. 1 to 3 A device for collecting unorganized VOCs waste gas of a factory building comprises a gas collection cabinet body 3. The gas collection cabinet body 3 is a cuboid.

[0031] The front and rear faces of the gas collecting cabinet body 3 are respectively provided with independently openable and closable first and second cabinet doors 1 and 1-1. The left and right side faces of the gas collecting cabinet body 3 are respectively provided with a group of vertically arranged front and rear blowing holes 2 and 2-1, and the two groups of blowing holes are respectively close to the first and second cabinet door openings. The two groups of blowing holes are connected to a gas source 2-2. When the first and second cabinet doors 1 and 1-1 are opened, the front and rear blowing holes 2 and 2-1 are respectively used to blow air to form an air flow wall at the first and second cabinet door openings, so as to limit the exhaust of VOCs waste gas in the gas collecting cabinet body 3. The first and second cabinet doors 1 and 1-1 are respectively provided with a group of vertically arranged front and rear air sealing ports 8 and 8-1, which are respectively used to block part of the front and rear blowing holes 2 and 2-1. One air sealing port corresponds to one blowing hole, and the number of air sealing ports in each group is less than the number of blowing holes in the corresponding group by one. When the first and second cabinet doors 1 and 1-1 are closed, the front and rear air sealing ports 8 and 8-1 block the corresponding part of the blowing holes, forming a combined structure 10 of blowing holes and air sealing ports. When the first and second cabinet doors 1 and 1-1 are closed, the blowing holes not blocked by the air sealing ports are the always-open blowing holes 9 in the lowest position.

[0032] The top face 6 of the gas collecting cabinet body 3 is partially or entirely transparent and is provided with a gas collecting opening 4, and the gas collecting opening 4 is at least used to seal connect a gas collecting pipe 5. Specifically, the gas collecting cabinet body 3 can have multiple, and is respectively sealed connected to a gas collecting main pipe 11 through the respective gas collecting openings 4 and gas collecting pipes 5. The gas collecting main pipe 11 is connected to an air exhaust fan (not shown) for air exhaust to form a negative pressure in the gas collecting cabinet body 3.

[0033] The bottom face of the gas collecting cabinet body 3 is in an open state, so that the unorganized VOCs waste gas emission source in the factory building is covered in the gas collecting cabinet body 3. Moreover, the bottom face of the gas collecting cabinet body 3 is seal connected to the unorganized VOCs waste gas emission source in the factory building.

[0034] One side face of the gas collecting cabinet body 3 is also seal installed with a rubber glove 7, which can be extended into the gas collecting cabinet body 3, so as to facilitate the ink mixing operation in the closed state of the cabinet door.

[0035] Referring to Fig. 3 In the printing process, the printing cylinder 12 is a component on the printing equipment, and since the printing piece 13 is continuously printed through the printing cylinder 12, the printing operation cannot be completely closed. The printing cylinder 12 on the printing equipment is below an ink hopper 14, and the ink hopper 14 contains printing ink 15. The printing piece 13 is printed after passing through the printing cylinder 12, the printing cylinder 12 and the ink hopper 14 are placed in the gas collecting cabinet body 3 for operation, the gas collecting cabinet body 3 is in a semi-closed state, and the volatile unorganized VOCs waste gas is limited in the gas collecting cabinet body 3 and is effectively collected.

[0036] The gas collecting cabinet body 3 can be used for collecting unorganized VOCs waste gas generated in plastic packaging printing and other industries, and the VOCs waste gas is collected into the gas collecting main pipe 11 through the gas collecting pipe 5, and finally transported to a treatment unit matched with the plant for treatment and discharge.

[0037] In addition, it should be understood that, after reading the above description of the present application, those skilled in the art can make various changes or modifications to the present application, and these equivalent forms also fall within the scope of the appended claims.

Claims

1. A device for collecting fugitive VOCs exhaust gas from a plant, characterized in that, The gas collecting cabinet body is a cuboid; The gas collecting cabinet body is provided with a gas collecting port on the top surface, and the gas collecting port is used for sealingly connecting a gas collecting pipe, and the gas collecting pipe is used for connecting an air extraction device to form a negative pressure in the gas collecting cabinet body; The gas collecting cabinet body is provided with independently openable and closable first and second cabinet doors on the side surface, and the first and second cabinet doors are arranged on the front and rear surfaces of the gas collecting cabinet body, respectively; The gas collecting cabinet body is provided with two groups of vertically arranged air blowing holes connected with a gas source, and the two groups of air blowing holes are arranged on the left or right side surface of the gas collecting cabinet body, or are arranged on the left and right side surfaces of the gas collecting cabinet body, respectively; 2. The device for collecting fugitive VOCs exhaust gas of a plant according to claim 1, characterized in that, The first and second cabinet doors are arranged close to the first and second cabinet door openings, respectively, and the two groups of air blowing holes are used for blowing air to form an air flow wall at the first and second cabinet door openings when the first and second cabinet doors are opened; 3. The device for collecting unorganized VOCs waste gas of factory building according to claim 1 or 2, characterized in that, The gas collecting cabinet body is provided with a rubber glove sealingly installed on the side surface, and the rubber glove can be inserted into the gas collecting cabinet body.

4. The apparatus for collecting fugitive VOCs exhaust gas of a plant according to claim 1, wherein, The bottom surface of the gas collecting cabinet body is provided in an open state to cover the unorganized VOCs waste gas emission source in the factory building into the gas collecting cabinet body.

5. The apparatus for collecting fugitive VOCs exhaust gas of a plant according to claim 4, wherein, The bottom surface of the gas collecting cabinet body is sealingly connected with the unorganized VOCs waste gas emission source in the factory building.

6. The apparatus for collecting fugitive VOCs exhaust gas of a plant according to claim 4, wherein, The first and second cabinet doors are provided with air sealing plugs, and the air sealing plugs block part of the air blowing holes when the first and second cabinet doors are closed.

7. The apparatus for collecting fugitive VOCs exhaust gas of a plant according to claim 1, wherein, The air blowing holes not blocked by the air sealing plugs when the first and second cabinet doors are closed include the air blowing holes in the lowest position. One air sealing plug corresponds to one air blowing hole, and the number of the air sealing plugs is less than the number of the air blowing holes.

8. The apparatus for collecting fugitive VOCs exhaust gas of a plant according to claim 1, wherein, The gas collecting port is sealingly connected with a gas collecting main pipe through the gas collecting pipe. The gas collecting main pipe is connected with an air extraction fan. The top surface of the gas collecting cabinet body is partially or entirely transparent.

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