Waste gas collecting device for digital printing

Abstract

The invention relates to the technical field of waste gas collection and treatment, in particular to a waste gas collection device for digital printing, which comprises a primary separation mechanism, after waste gas generated by digital printing is absorbed by a waste gas collection assembly, the waste gas enters a dust filtering assembly, and dust in the waste gas is filtered; the filtered waste gas continuously rises and enters an activated carbon adsorption mechanism through a switching assembly, gaseous pollutants are absorbed by activated carbon, the activated carbon is stored in an interlayer of a planar spiral plate, gas mixed with the gaseous pollutants moves from the outermost layer of the planar spiral plate to the middle of the planar spiral plate, the path of the gas is spiral, and the gaseous pollutants are adsorbed by the activated carbon. And when activated carbon adsorption is saturated, airflow resistance is increased, so that the air pressure in the switching assembly is increased, at the moment, under the action of the air pressure, the switching assembly works, the waste gas enters the activated carbon adsorption mechanism on the other side of the switching assembly, and the activated carbon adsorbs the waste gas more sufficiently.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas collection and treatment, and in particular to a waste gas collection device for digital printing. Background Art

[0002] Digital printing machines, as equipment for printing patterns onto textile fabrics, have the advantages of small footprint, high degree of automation, low labor requirements, low energy consumption, and high efficiency. However, if the exhaust gas generated by digital printing machines is directly discharged, it will not only pollute the atmosphere but also endanger the health of operators. During the printing steaming process in blanket production, a large amount of high-temperature exhaust gas containing paste particles is emitted. Direct discharge will cause serious environmental pollution. The existing announcement number is CN119113674B, which is a device for collecting and treating waste gas from a silicone oil reactor. The device comprises a treatment box and a U-shaped base, wherein the treatment box is composed of a rectangular box body and a cylindrical box body, wherein the inner wall of the rectangular box body is slidably connected to a circular frame, the inner wall of the circular frame body is rotatably connected to a rotating rod, the side wall of the rotating rod body is fixedly connected to a gear, a slide groove is provided on the inner wall of the rectangular box body, the inner wall of the slide groove is slidably connected to a vertical rack, the side of the vertical rack body is provided with a locking mechanism, and a winding roller component is installed on the top of the circular frame. The present invention provides a filter pad roller, a circular frame and a brush structure. When the lower circular plate and the circular frame move close to each other, after the multiple bristles come into contact with the bottom of the circular frame, the lower circular plate drives the multiple bristles to rotate to scrub the filter pad provided at the bottom of the circular frame, so that the greasy impurities filtered on the filter pad are brushed off, and this part of the filter pad can be reused many times. The existing waste gas collection and treatment devices have the following main disadvantages: When activated carbon is used to adsorb waste gas in the prior art, the adsorption effect of the activated carbon cannot be fully utilized, resulting in a partial waste of the activated carbon. Summary of the Invention

[0003] The object of the present invention is to provide an exhaust gas collection device for digital printing to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions: Provided is a waste gas collection device for digital printing, comprising a primary separation mechanism, wherein both sides of the primary separation mechanism are provided with activated carbon adsorption mechanisms; The primary separation mechanism includes: an exhaust gas collection assembly, wherein the upper end of the exhaust gas collection assembly is fixedly connected to a dust filter assembly, the upper end of the dust filter assembly is fixedly connected to a switching assembly, and the upper end of the switching assembly is fixedly connected to an air pressure monitoring assembly; and The activated carbon adsorption mechanism includes: A carbon adsorption core barrel assembly is fixedly connected to the switching assembly, and a flat spiral plate is fixedly connected inside the carbon adsorption core barrel assembly.

[0005] Furthermore, the exhaust gas collection assembly includes: A conical air intake pipe is provided, wherein a fan blade is rotatably connected inside the conical air intake pipe, the fan blade is fixedly connected to a motor, and the upper end of the conical air intake pipe is fixedly connected to one end of a corrugated pipe.

[0006] Furthermore, the dust filter assembly includes: Two pyramidal connecting tubes, the two pyramidal connecting tubes are respectively fixedly connected to the upper and lower ends of the rectangular connecting tube, the lower end of one pyramidal connecting tube is fixedly connected to the other end of the corrugated tube, and several Z-shaped guide plates are fixedly connected in the rectangular connecting tube, and a dust collecting groove is provided on the Z-shaped guide plate. A push plate is slidably connected between two adjacent Z-shaped guide plates, and the push plate cooperates with the screw rod through a nut. A sedimentation tank is fixedly connected to one side of the rectangular connecting tube, and the screw rod is fixedly connected to the output end of motor 2.

[0007] Furthermore, the switching component includes: A switching slot, wherein the lower end of the switching slot is fixedly connected to the upper end of another pyramid-shaped connecting tube, the upper end of the switching slot is fixedly connected to a sealing cover, the lower end of the switching slot is provided with an air inlet, one of the air inlets is fixedly connected to a conical gas guide tube, the upper end of the conical gas guide tube is provided with an air outlet, and two air outlets are respectively provided on both sides of the switching slot, a fixed baffle is fixedly connected in the switching slot, a connecting block is rotatably connected to the conical gas guide tube, a rotating baffle is fixedly connected to the connecting block, and two blocking blocks are also fixedly connected to the connecting block, the fixed baffle and the rotating baffle are connected by an arc spring, and the lower end of the rotating baffle is provided with a plurality of arc grooves; and An arc-shaped convex block is provided at the bottom of the switching slot, and the arc-shaped convex block is embedded in the arc-shaped groove.

[0008] Furthermore, the air pressure monitoring component includes: The air pressure barrel is fixedly connected to the upper end of the cover. A piston is slidably connected in the air pressure barrel. A connecting rod is fixedly connected to the piston. A spring is sleeved on the connecting rod.

[0009] Furthermore, the carbon adsorption core barrel assembly includes: The carbon adsorption barrel body, the flat spiral plate is fixedly connected to the carbon adsorption barrel body, the upper and lower ends of the carbon adsorption barrel body are respectively fixedly connected with a sealing cover 1 and a sealing cover 2, and the sealing cover 1 is fixedly connected with an air outlet 3.

[0010] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects: 1. After the waste gas generated by digital printing is absorbed by the waste gas collection component, the waste gas enters the dust filter component to filter the dust in the waste gas. The filtered waste gas continues to rise through the switching component and enters an activated carbon adsorption mechanism. The activated carbon is used to absorb the gaseous pollutants. The activated carbon is stored in the interlayer of the flat spiral plate. The gas mixed with gaseous pollutants moves from the outermost layer of the flat spiral plate to the middle of the flat spiral plate. During its movement, its path is spiral, which prolongs the time the waste gas stays in the activated carbon. When the activated carbon adsorption is saturated, the airflow resistance increases, which increases the air pressure in the switching component. At this time, under the action of air pressure, the switching component works, causing the waste gas to enter the activated carbon adsorption mechanism on the other side of the switching component, making the activated carbon adsorb the waste gas more fully.

[0011] 2. After removing some dust, the exhaust gas enters the conical gas guide pipe from the lower end of the switching tank, and then the gas flowing out from the first outlet flows out from the second outlet and enters the carbon adsorption core barrel assembly for carbon adsorption purification. When the activated carbon adsorption is saturated, the gas between the fixed baffle and the rotating baffle gradually increases, and the air pressure gradually increases. When the increase in air pressure is greater than the threshold value of the arc spring, the rotating baffle rotates, and at the same time drives the two blocking blocks to rotate, so that the second outlet on the side that is in the saturated state is blocked, and the second outlet on the other side is opened. The exhaust gas enters the carbon adsorption core barrel assembly on the other side from the second outlet on the other side for carbon adsorption purification. The switching component is automatically triggered by the change in air pressure to ensure that the adsorption resistance is minimized and to avoid increased energy consumption or decreased efficiency of the system due to saturation.

[0012] 3. The exhaust gas enters the lower end of the rectangular connecting pipe from the upper end of the corrugated pipe through a pyramid-shaped connecting pipe. When the exhaust gas passes between the two Z-shaped guide plates, it collides with one Z-shaped guide plate, and the dust falls onto the other Z-shaped guide plate or the dust collecting trough under the action of gravity. The second motor drives the screw to rotate, and the nut and the screw cooperate to move the push plate, pushing the dust in the dust collecting trough to the side where the sedimentation trough is located, so that the dust falls from the sedimentation trough. The dust is settled into the dust collecting trough through the multi-layer impact of the Z-shaped guide plate, and is automatically pushed to the sedimentation trough by the screw-driven push plate, realizing continuous dust removal and reducing the frequency of manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0014] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the first-level separation mechanism of the present invention; Figure 3 This is a schematic diagram of the overall three-dimensional structure of the dust filter assembly of the present invention; Figure 4 This is a schematic diagram of the overall three-dimensional structure of the dust filter assembly of the present invention; Figure 5 It is a schematic diagram of the overall three-dimensional structure of the Z-shaped guide plate of the present invention; Figure 6 This is a front view of the overall three-dimensional structure of the Z-shaped guide plate of the present invention; Figure 7 This is a schematic diagram of the overall three-dimensional structure of the switching assembly of the present invention; Figure 8 This is a schematic diagram of the overall three-dimensional structure of the switching component of the present invention; Figure 9 A top view of the overall three-dimensional structure of the switching slot of the present invention; Figure 10 This is a schematic diagram of the overall three-dimensional structure of the activated carbon adsorption mechanism of the present invention; Figure 11 This is a schematic diagram of the overall three-dimensional structure of the flat spiral plate of the present invention; Figure 12 This is a top view of the overall three-dimensional structure of the flat spiral plate of the present invention; In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Primary separation mechanism; 11. Exhaust gas collection assembly; 111. Conical suction pipe; 112. Fan blades; 113. Motor 1; 12. Dust filter assembly; 121. Pyramid connecting pipe; 122. Rectangular connecting pipe; 123. Z-shaped guide plate; 1231. Dust collecting trough; 124. Push plate; 125. Screw; 126. Sedimentation trough; 127. Motor 2; 13. Switching assembly; 131. Switching trough; 1 311. Air inlet 1; 1312. Air outlet 2; 132. Conical gas guide tube; 133. Fixed baffle; 134. Connecting block; 135. Rotating baffle; 136. Blocking block; 137. Arc spring; 138. Arc groove; 139. Arc protrusion; 1321. Air outlet 1; 14. Air pressure monitoring assembly; 141. Air pressure barrel; 142. Piston; 143. Connecting rod; 144. Spring; 2. Activated carbon adsorption mechanism; 21. Carbon adsorption core barrel assembly; 211. Carbon adsorption barrel body; 212. Sealing cover 1; 213. Sealing cover 2; 214. Air outlet 3; 22. Flat spiral plate. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0017] Reference Figure 1-2 As shown in FIG12 , a waste gas collection device for digital printing includes a primary separation mechanism 1 , and an activated carbon adsorption mechanism 2 is provided on both sides of the primary separation mechanism 1 ; The primary separation mechanism 1 includes: An exhaust gas collection component 11, wherein the upper end of the exhaust gas collection component 11 is fixedly connected to a dust filter component 12, the upper end of the dust filter component 12 is fixedly connected to a switching component 13, and the upper end of the switching component 13 is fixedly connected to an air pressure monitoring component 14; and The activated carbon adsorption mechanism 2 includes: The carbon adsorption core barrel assembly 21 is fixedly connected to the switching assembly 13 , and a flat spiral plate 22 is fixedly connected inside the carbon adsorption core barrel assembly 21 .

[0018] After the waste gas generated by digital printing is absorbed by the waste gas collection component 11, the waste gas enters the dust filter component 12 to filter the dust in the waste gas. The filtered waste gas continues to rise through the switching component 13 and enters an activated carbon adsorption mechanism 2. The activated carbon is used to absorb the gaseous pollutants. The activated carbon is stored in the interlayer of the flat spiral plate 22. The gas mixed with gaseous pollutants moves from the outermost layer of the flat spiral plate to the middle of the flat spiral plate 22. During its movement, its path is spiral, which prolongs the time the waste gas stays in the activated carbon. When the activated carbon adsorption is saturated, the airflow resistance increases, which increases the air pressure in the switching component 13. At this time, under the action of the air pressure, the switching component 13 works, causing the waste gas to enter the activated carbon adsorption mechanism 2 on the other side of the switching component 13.

[0019] Reference Figure 1-2 As shown, the exhaust gas collection component 11 includes: A conical air intake pipe 111 is provided with a fan blade 112 which is rotatably connected therein. The fan blade 112 is fixedly connected to a motor 113. The upper end of the conical air intake pipe 111 is fixedly connected to one end of a corrugated pipe.

[0020] The fan blades 112 are driven to rotate by the motor 113 , and the exhaust gas enters the conical suction pipe 111 into the bellows and then into the dust filter assembly 12 under the action of negative pressure.

[0021] Reference Figure 3-6 As shown, the dust filter assembly 12 includes: Two pyramidal connecting tubes 121, the two pyramidal connecting tubes 121 are respectively fixedly connected to the upper and lower ends of the rectangular connecting tube 122, the lower end of one pyramidal connecting tube 121 is fixedly connected to the other end of the corrugated tube, and a plurality of Z-shaped guide plates 123 are fixedly connected in the rectangular connecting tube 122, and a dust collecting groove 1231 is provided on the Z-shaped guide plate 123. A push plate 124 is slidably connected between two adjacent Z-shaped guide plates 123, and the push plate 124 cooperates with the screw rod 125 through a nut. A sedimentation tank 126 is fixedly connected to one side of the rectangular connecting tube 122, and one screw rod 125 is fixedly connected to the output end of motor 2 127.

[0022] The exhaust gas enters the lower end of the rectangular connecting pipe 122 from the upper end of the corrugated pipe through a pyramid-shaped connecting pipe 121. When the exhaust gas passes between the two Z-shaped guide plates 123, it collides with one Z-shaped guide plate 123, and the dust falls onto the other Z-shaped guide plate 123 or into the dust collecting trough 1231 under the action of gravity. The motor 2 127 drives the screw rod 125 to rotate, and the push plate 124 moves through the cooperation of the nut and the screw rod 125, pushing the dust in the dust collecting trough 1231 to the side where the sedimentation trough 126 is located, so that the dust falls from the sedimentation trough 126.

[0023] Reference Figure 7-9 As shown, the switching component 13 includes: The switching slot 131 is fixedly connected to the upper end of another pyramid-shaped connecting pipe 121 at its lower end. A cover is fixedly connected to the upper end of the switching slot 131. An air inlet 1311 is provided at the lower end of the switching slot 131. A conical gas guide pipe 132 is fixedly connected to the air inlet 1311. An air outlet 1321 is provided at the upper end of the conical gas guide pipe 132. An air outlet 1321 is provided on both sides of the switching slot 131. 312, a fixed baffle 133 is fixedly connected to the switching groove 131, a connecting block 134 is rotatably connected to the conical gas guide tube 132, a rotating baffle 135 is fixedly connected to the connecting block 134, and two blocking blocks 136 are also fixedly connected to the connecting block 134. The fixed baffle 133 and the rotating baffle 135 are connected by an arc spring 137, and a plurality of arc grooves 138 are formed at the lower end of the rotating baffle 135; and An arc-shaped protrusion 139 is formed at the bottom of the switching slot 131 , and the arc-shaped protrusion 139 is embedded in the arc-shaped groove 138 .

[0024] After some dust is removed, the exhaust gas enters the conical gas guide tube 132 from the lower end of the switching groove 131, and then the gas flowing out from the air outlet 1 1321 flows out from the air outlet 2 1312 and enters the carbon adsorption core barrel assembly 21 for carbon adsorption purification. When the activated carbon adsorption is saturated, the gas between the fixed baffle 133 and the rotating baffle 135 gradually increases, and the air pressure gradually increases. When the increase in air pressure is greater than the threshold value of the arc spring 137, the rotating baffle 135 rotates, and at the same time drives the two blocking blocks 136 to rotate, so that the air outlet 2 1312 on the side that is in the saturated state is blocked, and at the same time the air outlet 2 1312 on the other side is opened, and the exhaust gas enters the carbon adsorption core barrel assembly 21 on the other side from the air outlet 2 1312 on the other side for carbon adsorption purification.

[0025] The air pressure monitoring component 14 includes: The air pressure barrel 141 is fixedly connected to the upper end of the cover. A piston 142 is slidably connected inside the air pressure barrel 141. A connecting rod 143 is fixedly connected to the piston 142. A spring 144 is sleeved on the connecting rod 143.

[0026] When the activated carbon is saturated with adsorption, the air pressure increases, causing the piston 142 to move upward. The air pressure barrel 141 is made of transparent material, so the position change of the piston 142 can be observed. The state of carbon adsorption on one side can be judged based on the change in the position of the piston 142.

[0027] Reference Figure 10-11As shown, the carbon adsorption core barrel assembly 21 includes: The carbon adsorption barrel body 211, the flat spiral plate 22 is fixedly connected in the carbon adsorption barrel body 211, the upper and lower ends of the carbon adsorption barrel body 211 are respectively fixedly connected with a sealing cover 1 212 and a sealing cover 2 213, and the sealing cover 1 212 is fixedly connected with an air outlet 3 214.

[0028] When it is observed that the position change of the piston 142 is more obvious, the cylinder can be started to push the sealing cover 213 to open, so that the activated carbon falls under the action of gravity, and then the sealing cover 213 is closed, the sealing cover 1 212 is opened, new activated carbon is added thereto, and then the sealing cover 1 212 is closed.

[0029] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A waste gas collection device for digital printing, characterized by: It comprises a primary separation mechanism (1), wherein activated carbon adsorption mechanisms (2) are respectively provided on both sides of the primary separation mechanism (1); The primary separation mechanism (1) comprises: An exhaust gas collection component (11), the upper end of the exhaust gas collection component (11) is fixedly connected to a dust filter component (12), the upper end of the dust filter component (12) is fixedly connected to a switching component (13), and the upper end of the switching component (13) is fixedly connected to an air pressure monitoring component (14); and The activated carbon adsorption mechanism (2) comprises: A carbon adsorption core barrel assembly (21) is fixedly connected to the switching assembly (13), and a flat spiral plate (22) is fixedly connected inside the carbon adsorption core barrel assembly (21).

2. The waste gas collection device for digital printing according to claim 1, characterized in that: The exhaust gas collecting assembly (11) comprises: A conical air intake pipe (111) is provided with a fan blade (112) rotatably connected therein, the fan blade (112) is fixedly connected to a motor (113), and the upper end of the conical air intake pipe (111) is fixedly connected to one end of a corrugated pipe.

3. The waste gas collection device for digital printing according to claim 2, characterized in that: The dust filter assembly (12) comprises: Two pyramid-shaped connecting tubes (121), the two pyramid-shaped connecting tubes (121) are respectively fixedly connected to the upper and lower ends of the rectangular connecting tube (122), the lower end of one pyramid-shaped connecting tube (121) is fixedly connected to the other end of the corrugated tube, a plurality of Z-shaped guide plates (123) are fixedly connected inside the rectangular connecting tube (122), a dust collecting groove (1231) is provided on the Z-shaped guide plate (123), a push plate (124) is slidably connected between two adjacent Z-shaped guide plates (123), the push plate (124) cooperates with a screw rod (125) through a nut, a sedimentation tank (126) is fixedly connected to one side of the rectangular connecting tube (122), and one screw rod (125) is fixedly connected to the output end of the second motor (127).

4. The waste gas collection device for digital printing according to claim 3, characterized in that: The switching component (13) includes: A switching groove (131), the lower end of the switching groove (131) is fixedly connected to the upper end of another pyramid-shaped connecting pipe (121), the upper end of the switching groove (131) is fixedly connected to a cover, the lower end of the switching groove (131) is provided with an air inlet 1 (1311), the air inlet 1 (1311) is fixedly connected to a conical gas guide pipe (132), the upper end of the conical gas guide pipe (132) is provided with an air outlet 1 (1321), and both sides of the switching groove (131) are provided with air outlet 2 (1311). 2) A fixed baffle (133) is fixedly connected to the switching groove (131), a connecting block (134) is rotatably connected to the conical gas guide tube (132), a rotating baffle (135) is fixedly connected to the connecting block (134), and two blocking blocks (136) are also fixedly connected to the connecting block (134), the fixed baffle (133) and the rotating baffle (135) are connected via an arc spring (137), and a plurality of arc grooves (138) are provided at the lower end of the rotating baffle (135); and An arc-shaped protrusion (139) is provided at the bottom of the switching slot (131), and the arc-shaped protrusion (139) is embedded in the arc-shaped groove (138).

5. The waste gas collection device for digital printing according to claim 4, characterized in that: The air pressure monitoring component (14) includes: A pressure barrel (141) is fixedly connected to the upper end of the cover, a piston (142) is slidably connected inside the pressure barrel (141), a connecting rod (143) is fixedly connected to the piston (142), and a spring (144) is sleeved on the connecting rod (143).

6. The waste gas collection device for digital printing according to claim 5, characterized in that: The carbon adsorption core barrel assembly (21) includes: The carbon adsorption barrel body (211) is fixedly connected to the flat spiral plate (22) in the carbon adsorption barrel body (211). The upper and lower ends of the carbon adsorption barrel body (211) are respectively fixedly connected to a sealing cover 1 (212) and a sealing cover 2 (213). The sealing cover 1 (212) is fixedly connected to an air outlet 3 (214).

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