An environmentally friendly waste collection device for UV curing ovens

Abstract

This utility model discloses an environmentally friendly waste collection device for UV curing ovens, specifically relating to the field of waste collection technology for curing ovens. It includes a collection box with a partition fixedly connected to its inner wall. A filter is fixedly installed on one side of the partition. A connecting pipe is connected through one side of the upper surface of the collection box, and a discharge pipe is connected through the other side of the upper surface of the collection box. The inlet end of the discharge pipe is connected to the filter. This utility model, by setting a pre-treatment structure, enables the device to have a pre-treatment function. During treatment, volatiles and a small amount of solid waste are pre-separated by physical condensation, resulting in a significant reduction in the amount of waste entering the filter. This effectively reduces the filter load, extends its replacement cycle, and lowers equipment operating costs and maintenance time. Simultaneously, it prevents high-boiling-point components from randomly depositing inside the collection box cavity, ensuring airflow efficiency and improving overall collection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of waste collection technology for curing ovens, specifically to an environmental protection device for collecting waste from UV curing ovens. Background Technology

[0002] During the application of UV curing technology, the coatings, inks and other materials in the UV curing oven will undergo chemical reactions under ultraviolet irradiation, which will also generate a large amount of volatile organic compounds (VOCs) and a small amount of solid waste. If these volatiles are directly emitted into the air, they will not only harm the health of the operators, but also aggravate air pollution, which does not meet the requirements of environmental protection regulations. Therefore, it is necessary to use waste collection and environmental protection devices to effectively collect and treat the volatiles in the UV curing oven.

[0003] Application No. 201821880600.1 discloses an environmentally friendly waste collection device for UV curing ovens, "including an exhaust fan, a sealable waste collection box, and an oil-absorbing filter. The waste collection box has an inlet and an outlet at its upper end. The inlet is connected to the outlet end of the UV exhaust pipe, and the outlet is connected to the exhaust fan through a fan pipe. The exhaust fan provides a negative pressure of -0.3±0.1MPa, so that the volatiles in the UV curing oven are drawn into the waste collection box through the exhaust pipe. An oil-absorbing filter is installed on the fan pipe inside the waste collection box, which can adsorb some of the volatiles." In the above description, the exhaust fan provides negative pressure, drawing the volatiles in the UV curing oven into the waste collection box through the exhaust pipe, and then the oil-absorbing filter installed on the fan pipe adsorbs the volatiles. The device separates volatile organic compounds (VOCs) to achieve preliminary collection and purification, reducing direct emissions and playing a certain environmental protection role. However, the waste collection box is a single chamber and lacks pretreatment capabilities, making it impossible to liquefy high-boiling-point VOCs. This results in VOCs of different boiling points mixing with solid waste, causing high-boiling-point components to easily deposit inside the chamber, gradually adhering to the box walls and fan duct inlets, reducing flow space, affecting airflow efficiency, and thus reducing negative pressure ventilation. Furthermore, all VOCs directly enter the oil-absorbing filter, where solid particles and sticky components quickly clog the filter media, significantly increasing the filter's load, making it prone to clogging and requiring frequent replacement. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly waste collection device for UV curing ovens to address the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly waste collection device for UV curing ovens, comprising a collection box, a partition fixedly connected to the inner wall of the collection box, a filter fixedly installed on one side of the partition, a connecting pipe extending through one side of the upper surface of the collection box, and a discharge pipe extending through the other side of the upper surface of the collection box, the inlet end of the discharge pipe connected to the filter, and the outlet end of the discharge pipe connected to an exhaust fan, a receiving box inserted into the bottom of the collection box, and a supporting base fixedly connected to the lower outer end of the collection box, a through groove opened on the side wall of the partition, and a second receiving hopper provided on one side of the through groove and below the filter.

[0006] Specifically, in use, the connecting pipe is first connected to the exhaust port of the UV curing oven. Then, the CF-110 exhaust fan is started. The negative pressure provided by the fan causes the volatiles and a small amount of solid waste in the UV curing oven to be drawn into the collection box through the connecting pipe. After entering the collection box, the volatiles pass through the filter, where the oily components and some fine particles are adsorbed and filtered. The purified gas is discharged outdoors through the exhaust fan and the exhaust pipe. At this time, the emitted gas meets environmental protection standards and will not cause pollution to the environment. The solid waste separated in the collection box and some waste intercepted by the filter fall into the receiving box through the second receiving hopper under the action of gravity, realizing the centralized collection of waste and facilitating subsequent unified treatment.

[0007] Preferably, the other side of the partition is provided with a pretreatment structure for pretreating the volatiles and a small amount of solid waste entering the collection box.

[0008] Preferably, the pretreatment structure includes a cooling chamber located on the other side of the partition and inside the collection box. A plurality of serpentine cooling pipes are sequentially connected inside the cooling chamber. The inlet ends of the plurality of serpentine cooling pipes are connected to a first horizontal pipe, and the outlet ends of the plurality of serpentine cooling pipes are connected to a second horizontal pipe. The second horizontal pipe and the first horizontal pipe are located outside the collection box.

[0009] Preferably, the pretreatment structure further includes an inlet pipe that is connected through to the side wall of the first horizontal pipe, an outlet pipe that is connected through to the side wall of the second horizontal pipe, and a first receiving hopper that is connected inside the collection box and at the lower end of the plurality of serpentine cooling pipes.

[0010] Through the above technical solution:

[0011] During processing, volatiles and a small amount of solid waste first enter the cooling chamber inside the collection box through the connecting pipe, where they come into contact with the serpentine cooling pipe through which cooling water flows. The high-boiling-point volatiles are rapidly liquefied through condensation. The liquid waste flows into the receiving box through the first receiving hopper under gravity. The unliquefied low-boiling-point volatiles and a small amount of solid waste continue into subsequent processing stages. This operation pre-separates a large amount of high-boiling-point volatiles through physical condensation, significantly reducing the amount of waste entering the filter, effectively reducing the filter's load, extending its replacement cycle, and lowering equipment operating costs and maintenance time. Simultaneously, it prevents high-boiling-point components from randomly depositing inside the collection box cavity, ensuring airflow efficiency and improving overall collection efficiency.

[0012] Preferably, the filter is provided with a cleaning component on its outer side for online cleaning of the filter.

[0013] Preferably, the cleaning component includes two outer ring tubes fixedly connected inside the collection box. The two outer ring tubes are sequentially sleeved on the outside of the filter from top to bottom, and multiple air outlet nozzles are equidistantly connected to the inner surface of the two outer ring tubes. A connecting rod is fixedly connected between the two outer ring tubes.

[0014] Preferably, the cleaning assembly further includes a connecting horizontal pipe connected to the outer walls of both outer ring pipes. The end of the connecting horizontal pipe away from the outer ring pipe extends through and to the outside of the collection box, where it is connected to an outer pipe. The upper end of the outer pipe is connected to a through pipe with a valve body, and the inlet end of the through pipe is connected to a discharge pipe.

[0015] Through the above technical solution:

[0016] When the filter resistance increases, the valve on the through pipe is opened. Under the negative pressure of the device, some of the gas drawn from the collection box is introduced into the through pipe and the outer pipe. Then, the gas is diverted to the outer ring pipe through the connecting horizontal pipe, and finally sprayed evenly onto the filter through multiple air outlet nozzles. This operation creates an airflow impact by introducing air, which blows off solid impurities and sticky residues attached to the surface of the filter. The fallen impurities are collected into the second receiving hopper under the action of gravity, realizing online cleaning of the filter. This process can restore the filtration performance without disassembling the filter, extend its service life, reduce the replacement frequency, reduce maintenance costs, and ensure stable operation of the device.

[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0018] 1. By setting up a pretreatment structure, the device has a pretreatment function. During the treatment, volatiles and a small amount of solid waste are separated by physical condensation, resulting in a large amount of high-boiling-point volatiles. This significantly reduces the amount of waste entering the filter, effectively reducing the filter load, extending its replacement cycle, and reducing equipment operating costs and maintenance time. At the same time, it also prevents high-boiling-point components from depositing randomly inside the collection box cavity, ensuring airflow efficiency and improving overall collection efficiency.

[0019] 2. By incorporating a cleaning component, the filter acquires a cleaning function. When the filter's filtration resistance increases, the directional airflow created by the incoming air quickly and thoroughly blows away solid impurities and sticky residues adhering to the filter surface, preventing impurities from clogging the filter pores. This achieves highly efficient online cleaning of the filter. This process does not require disassembling the filter, eliminating the cumbersome steps of stopping the machine for disassembly and assembly. The cleaning operation can be completed during normal operation of the device. This not only restores the filter's filtration performance in a timely manner, ensuring that the filtration efficiency remains at a high level, but also significantly extends the filter's service life, greatly reducing the replacement frequency and lowering the material and labor maintenance costs caused by frequent filter replacements. At the same time, it effectively avoids equipment operation interruptions caused by filter clogging, ensuring the continuous and stable operating efficiency of the device and improving the overall continuity and economy of production. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0022] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0023] Figure 3 This is one of the cross-sectional schematic diagrams of the collection box of this utility model;

[0024] Figure 4 This is a schematic diagram of the pretreatment structure of this utility model;

[0025] Figure 5 This is the second cross-sectional schematic diagram of the collection box of this utility model;

[0026] Figure 6 This is one of the schematic diagrams showing the connection between the cleaning component and the filter of this utility model;

[0027] Figure 7This is the second schematic diagram showing the connection between the cleaning component and the filter of this utility model;

[0028] Figure 8 This is an enlarged schematic diagram of the connection between the outer ring pipe and the connecting horizontal pipe of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Collection box; 2. Connecting pipe; 3. Discharge pipe; 4. Exhaust fan; 5. Baffle; 6. Pretreatment structure; 61. Cooling chamber; 62. Serpentine cooling pipe; 63. First horizontal pipe; 64. Second horizontal pipe; 65. Liquid inlet pipe; 66. Liquid outlet pipe; 67. First receiving hopper; 7. Through groove; 8. Filter; 9. Second receiving hopper; 10. Cleaning component; 101. Outer ring pipe; 102. Air outlet nozzle; 103. Connecting horizontal pipe; 104. Connecting rod; 105. Outer pipe; 106. Through pipe; 11. Receiving box; 12. Support base frame. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] This utility model provides, for example Figures 1-3 and Figure 5 The waste collection and environmental protection device for UV curing ovens shown includes:

[0033] A collection box 1 has a partition 5 fixedly connected to its inner wall. A filter 8 is fixedly installed on one side of the partition 5. A connecting pipe 2 is connected through one side of the upper surface of the collection box 1, and a discharge pipe 3 is connected through the other side of the upper surface of the collection box 1. The inlet end of the discharge pipe 3 is connected to the filter 8, and the outlet end of the discharge pipe 3 is connected to a fan 4. A receiving box 11 is inserted into the bottom of the collection box 1, and a support frame 12 is fixedly connected to the lower part of the outer side of the collection box 1. A through groove 7 is opened on the side wall of the partition 5, and a second receiving hopper 9 is provided on one side of the through groove 7 and below the filter 8.

[0034] Specifically, in use, first connect the connecting pipe 2 to the exhaust port of the UV curing oven, then start the CF-110 exhaust fan 4. The negative pressure provided by the fan causes the volatiles and a small amount of solid waste in the UV curing oven to be drawn into the collection box 1 through the connecting pipe 2. After entering the collection box 1, the volatiles pass through the filter 8, where the oily components and some fine particles are adsorbed and filtered. The purified gas is discharged outdoors through the exhaust fan 4 and the exhaust pipe 3. At this time, the emitted gas meets the environmental protection standards and will not cause pollution to the environment. The solid waste separated in the collection box 1 and some waste intercepted by the filter 8 fall into the receiving box 11 through the second receiving hopper 9 under the action of gravity, realizing the centralized collection of waste and facilitating subsequent unified treatment.

[0035] This utility model provides, for example Figure 1 , Figure 3 and Figure 4 The waste collection and environmental protection device for UV curing oven shown has a pretreatment structure 6 on the other side of the partition 5, which is used to pretreat the volatiles and a small amount of solid waste entering the collection box 1.

[0036] The pretreatment structure 6 includes a cooling chamber 61 located on the other side of the partition 5 and inside the collection box 1. Multiple serpentine cooling pipes 62 are sequentially connected inside the cooling chamber 61. The inlet end of the multiple serpentine cooling pipes 62 is connected to a first horizontal pipe 63, and the outlet end of the multiple serpentine cooling pipes 62 is connected to a second horizontal pipe 64. The second horizontal pipe 64 and the first horizontal pipe 63 are located on the outside of the collection box 1.

[0037] The pretreatment structure 6 also includes an inlet pipe 65 that is connected through the side wall of the first horizontal pipe 63, an outlet pipe 66 that is connected through the side wall of the second horizontal pipe 64, and a first receiving hopper 67 that is connected inside the collection box 1 and located at the lower end of the plurality of serpentine cooling pipes 62.

[0038] Through the above technical solution:

[0039] During processing, volatiles and a small amount of solid waste first enter the cooling chamber 61 inside the collection box 1 through the connecting pipe 2, and come into contact with the serpentine cooling pipe 62 through which cooling water flows. The high-boiling-point volatiles are quickly liquefied by condensation. The liquid waste flows into the receiving box 11 through the first receiving hopper 67 under the action of gravity. The unliquefied low-boiling-point volatiles and a small amount of solid waste continue to enter the subsequent processing stage. This operation pre-separates a large amount of high-boiling-point volatiles through physical condensation, which significantly reduces the amount of waste entering the filter 8, effectively reduces the load on the filter 8, extends the replacement cycle of the filter 8, and reduces the equipment operating cost and maintenance time. At the same time, it also avoids the random deposition of high-boiling-point components inside the cavity of the collection box 1, ensures the airflow efficiency, and improves the overall collection efficiency.

[0040] This utility model provides, for example Figure 2 , Figures 5-8 The illustrated waste collection and environmental protection device for UV curing ovens has a cleaning component 10 on the outside of the filter 8 for online cleaning of the filter 8.

[0041] The cleaning component 10 includes two outer ring pipes 101 fixedly connected inside the collection box 1. The two outer ring pipes 101 are sequentially sleeved on the outside of the filter 8 from top to bottom, and multiple air nozzles 102 are equidistantly connected to the inner surface of the two outer ring pipes 101. A connecting rod 104 is fixedly connected between the two outer ring pipes 101.

[0042] The cleaning assembly 10 also includes a connecting horizontal pipe 103 connected to the outer wall of the two outer ring pipes 101. The end of the connecting horizontal pipe 103 away from the outer ring pipe 101 passes through and extends to the outside of the collection box 1 and is connected to an outer pipe 105. The upper end of the outer pipe 105 is connected to a through pipe 106 with a valve body. The inlet end of the through pipe 106 is connected to the discharge pipe 3.

[0043] Through the above technical solution:

[0044] When the filtration resistance of filter 8 increases, the valve on the through pipe 106 is opened. Under the negative pressure of the device, some of the gas drawn from the collection box 1 is introduced into the through pipe 106 and the outer pipe 105. Then, the gas is diverted to the outer ring pipe 101 through the connecting horizontal pipe 103, and finally sprayed evenly onto filter 8 through multiple air outlet nozzles 102. This operation creates an airflow impact by introducing air, which blows off solid impurities and sticky residues attached to the surface of filter 8. The fallen impurities are collected into the second receiving hopper 9 under the action of gravity, realizing online cleaning of filter 8. This process can restore its filtration performance without disassembling filter 8, extend its service life, reduce the replacement frequency, reduce maintenance costs, and ensure stable operation of the device.

[0045] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waste collection and environmental protection device for a UV curing oven, characterized in that, include: A collection box (1) is provided with a partition (5) fixedly connected to the inner wall of the collection box (1). A filter (8) is fixedly installed on one side of the partition (5). A connecting pipe (2) is connected through one side of the upper end face of the collection box (1), and a discharge pipe (3) is connected through the other side of the upper end face of the collection box (1). The inlet end of the discharge pipe (3) is connected to the filter (8), and the outlet end of the discharge pipe (3) is connected to an exhaust fan (4). A pretreatment structure (6) is provided on the other side of the partition (5), and a cleaning component (10) is provided on the outside of the filter (8) for cleaning the filter (8).

2. A waste collection and environmental protection device for a UV curing oven according to claim 1, characterized in that: The pretreatment structure (6) includes a cooling chamber (61) located on the other side of the partition (5) and inside the collection box (1). A plurality of serpentine cooling pipes (62) are sequentially connected inside the cooling chamber (61). The inlet end of the plurality of serpentine cooling pipes (62) is connected to a first horizontal pipe (63), and the outlet end of the plurality of serpentine cooling pipes (62) is connected to a second horizontal pipe (64). The second horizontal pipe (64) and the first horizontal pipe (63) are located outside the collection box (1).

3. A waste collection and disposal device for a UV curing oven as claimed in claim 2, wherein: The pretreatment structure (6) further includes an inlet pipe (65) that is connected through to the side wall of the first horizontal pipe (63), an outlet pipe (66) that is connected through to the side wall of the second horizontal pipe (64), and a first receiving hopper (67) that is connected inside the collection box (1) and at the lower end of the plurality of serpentine cooling pipes (62).

4. The waste collection and environmental protection device for UV curing ovens according to claim 1, characterized in that: The cleaning component (10) includes two outer ring pipes (101) fixedly connected inside the collection box (1). The two outer ring pipes (101) are sequentially sleeved on the outside of the filter (8) from top to bottom. The inner walls of the two outer ring pipes (101) are respectively connected with multiple air nozzles (102) at equal intervals. A connecting rod (104) is fixedly connected between the two outer ring pipes (101).

5. The waste collection and environmental protection device for UV curing ovens according to claim 1, characterized in that: The cleaning assembly (10) also includes a connecting horizontal pipe (103) connected to the outer wall of the two outer ring pipes (101). The end of the connecting horizontal pipe (103) away from the outer ring pipe (101) passes through and extends to the outside of the collection box (1) and is connected to an outer pipe (105). The upper end of the outer pipe (105) is connected to a through pipe (106) with a valve body. The inlet end of the through pipe (106) is connected to the discharge pipe (3).

6. The waste collection and environmental protection device for UV curing ovens according to claim 1, characterized in that: The bottom of the collection box (1) is fitted with a receiving box (11), and the lower part of the outer side of the collection box (1) is fixedly connected with a support frame (12).

7. The waste collection and environmental protection device for UV curing ovens according to claim 1, characterized in that: The side wall of the partition (5) is provided with a through groove (7), and a second receiving hopper (9) is provided on one side of the through groove (7) and at the lower end of the filter (8).

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