Negative pressure collecting device for printing waste gas

Abstract

The printing waste gas negative pressure collecting device is characterized in that a filtering mechanism comprises an inserting plate, the middle of the inserting plate is hollowed out, a filtering net is fixedly installed on the portion, located on the inner side of the hollowed-out portion, of the inserting plate, and movable grooves are formed in the positions, located on the two sides of the filtering net, of the inner wall of the inserting plate; one ends of the two movable grooves extend to the surface of the back side of the inserting plate, the movable grooves are slidably connected with extrusion rods, the ends, close to the back side of the inserting plate, of the extrusion rods are fixedly connected with push plates, the push plates abut against the inner sides of the movable grooves, and inserting shafts are symmetrically and fixedly connected to the front face of the inserting plate; the length direction of the inserting shaft is consistent with the length direction of the movable groove, the connecting frame can unlock the to-be-replaced inserting plate only by inserting the inserting plate with a new filter screen into the connecting frame, so that the to-be-replaced inserting plate is extruded out of the connecting frame by the new inserting plate, and after the new inserting plate is inserted in place, the connecting frame can lock the new inserting plate. Therefore, the convenience degree of replacing the filter screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas collection, in particular to a negative pressure collection device for printing waste gas. Background Art

[0002] Printing waste gas refers to the waste gas released during the printing production process, which mainly includes volatile organic compounds, particulate matter and other chemicals. These waste gases may have negative impacts on the environment and health, so effective emission control and treatment technologies are needed to reduce their impact on the environment.

[0003] In the prior art, it is usually necessary to collect printing waste gas and then centrally process it. A filtering structure is usually arranged inside the gas collection device for pre-treatment to intercept and filter out small particles in the waste gas. However, since the filtering structure is usually installed inside the air duct, it is not easy to remove and replace it. Therefore, a negative pressure collection device for printing waste gas is proposed to solve the above problem. Utility Model Content

[0004] The technical problem to be solved by the utility model is as follows: the filter structure is usually installed inside the air duct, so it is not easy to dismantle and replace it.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A negative pressure collection device for printing waste gas, comprising a collection mechanism, a filtering mechanism is arranged above the collection mechanism, and the collection mechanism comprises a negative pressure fan;

[0007] Also includes:

[0008] The filtering mechanism comprises a plug plate, the middle part of the plug plate is hollowed out, a filter screen is fixedly installed on the inner side of the plug plate located at the hollowed out part, and movable grooves are provided on the inner wall of the plug plate and on both sides of the filter screen;

[0009] One end of each of the two movable grooves extends to the back surface of the plug board, an extrusion rod is slidably connected to the inside of the movable groove, and an end of the extrusion rod close to the back side of the plug board is fixedly connected to a push plate, and the push plate abuts against the inner side of the movable groove;

[0010] Among them, an insertion shaft is symmetrically fixedly connected to the front side of the insertion plate, and the length direction of the insertion shaft is consistent with the length direction of the movable groove.

[0011] As a further solution of the utility model: the filtering mechanism also includes a connecting frame, an upper connecting pipe is fixedly connected to the middle of the top of the connecting frame, a mounting groove is opened in the middle of the connecting frame, sealing gaskets are fixedly connected to the front and back of the connecting frame and at the lower end of the mounting groove, and the inner wall of the mounting groove is connected with the plug plate.

[0012] As a further solution of the utility model: both sides of the inner wall of the connecting frame are slidably connected with a card shaft 2, one end of the card shaft 2 is fixedly connected with a spring 3, the other end of the spring 3 is fixedly connected to the connecting frame, the end of the card shaft 2 located away from the spring 3 penetrates into the installation groove, the end of the card shaft 2 is connected with the plug plate, and the surface of the card shaft 2 is against the extrusion rod.

[0013] As a further solution of the utility model: the front and back sides of the connecting frame and located above the mounting groove are both slidably connected with movable plates, the bottom surface of the movable plates is in movably contact with the sealing gasket, a handle is fixedly connected to the middle part of the upper end of the movable plate, and a connecting piece is fixedly connected to the side of the movable plate, and the two movable plates are connected to each other via the connecting piece.

[0014] As a further solution of the utility model: the collecting mechanism includes a lower connecting pipe, the bottom of the lower connecting pipe is fixedly connected to a wind collecting scoop, the top of the lower connecting pipe is fixedly connected to the bottom surface of the connecting frame, and the lower connecting pipe is located below the filter screen.

[0015] As a further solution of the utility model: a clamping shaft is slidably connected to the inner side of the lower end of the wind collecting bucket, one end of the clamping shaft is fixedly connected to a spring, the other end of the spring is fixedly connected to the inner wall of the wind collecting bucket, and a pull rod is also fixedly connected to the surface of the clamping shaft, and the pull rod is connected with the wind collecting bucket.

[0016] As a further solution of the utility model: the inner side of the lower end of the wind collecting scoop is also movably connected to a mounting frame, the bottom surface of the mounting frame is fixedly installed with multiple negative pressure fans, the side inner wall of the mounting frame is through-connected with one end of the card shaft, the inner wall of the mounting frame is slidably connected with a handle near the card shaft, the top of the handle is fixedly connected with an extrusion shaft, the side of the extrusion shaft is abutted against the card shaft, the middle part of the outer wall of the handle is fixedly connected with a spring 2, and the top of the spring 2 is fixedly connected to the mounting frame.

[0017] Beneficial effects of the utility model:

[0018] (1) The utility model installs a plug-in plate with a filter in a connecting frame. When the exhaust gas passes through the connecting frame, particles are filtered out by the filter. When the filter needs to be replaced, it is only necessary to insert the plug-in plate with a new filter into the connecting frame. The connecting frame can release the lock on the plug-in plate to be replaced, so that the plug-in plate to be replaced is squeezed out of the connecting frame by the new plug-in plate. After the new plug-in plate is inserted into place, the connecting frame can lock the new plug-in plate, thereby improving the convenience of replacing the filter.

[0019] (2) A negative pressure fan is arranged below the wind collecting scoop. When the negative pressure fan is started, the exhaust gas is drawn into the connection frame. The negative pressure fan is fixed inside the wind collecting scoop through the installation frame. A handle is arranged below the installation frame. By pulling down the handle, the lock of the wind collecting scoop on the installation frame can be released, thereby facilitating the maintenance process of the negative pressure fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a rear view structural diagram of the filtering mechanism in the utility model;

[0023] Figure 3 It is a schematic diagram of the cross-sectional view of the connection frame structure in the utility model from a top view;

[0024] Figure 4 This is a schematic diagram of the internal structure of the wind bucket in the utility model;

[0025] Figure 5 It is a schematic diagram of the upward structure of the installation frame in the utility model.

[0026] In the figure: 1. collecting mechanism; 101. lower connecting pipe; 102. wind collecting bucket; 103. clamping shaft 1; 104. spring 1; 105. pull rod; 106. mounting frame; 107. negative pressure fan; 108. handle; 109. spring 2; 110. extrusion shaft; 2. filtering mechanism; 201. connecting frame; 202. upper connecting pipe; 203. mounting groove; 204. sealing gasket; 205. movable plate; 206. handle; 207. connecting piece; 208. clamping shaft 2; 209. spring 3; 210. plug plate; 211. filter screen; 212. movable groove; 213. push plate; 214. extrusion rod; 215. plug shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-5As shown, the negative pressure collection device for printing waste gas includes a collection mechanism 1, a filtering mechanism 2 is arranged above the collection mechanism 1, and the collection mechanism 1 includes a negative pressure fan 107; it also includes: wherein the filtering mechanism 2 includes a plug plate 210, the middle part of the plug plate 210 is hollowed out, and a filter screen 211 is fixedly installed on the inner side of the plug plate 210 located at the hollow part, and movable grooves 212 are opened on the inner wall of the plug plate 210 and on both sides of the filter screen 211; wherein one end of the two movable grooves 212 extends to the back surface of the plug plate 210, and the inside of the movable groove 212 is slidably connected with an extrusion rod 214, and the end of the extrusion rod 214 close to the back side of the plug plate 210 is fixedly connected with a push plate 213, and the push plate 213 is against the inner side of the movable groove 212; wherein the front side of the plug plate 210 is symmetrically fixedly connected with an insertion shaft 215, and the length direction of the insertion shaft 215 is consistent with the length direction of the movable groove 212, as shown in FIG. Figure 3 As shown, the opening extending through the movable slot 212 on the surface of the inserting plate 210 can move the push plate 213 and drive the extrusion rod 214 to move, and the end of the extrusion rod 214 away from the push plate 213 is set as an inclined surface;

[0029] The filter mechanism 2 also includes a connection frame 201, an upper connection pipe 202 is fixedly connected to the middle of the top of the connection frame 201, a mounting groove 203 is opened in the middle of the connection frame 201, and a sealing gasket 204 is fixedly connected to the front and back of the connection frame 201 and the lower end of the mounting groove 203, and the inner wall of the mounting groove 203 is connected to the plug plate 210 through and through, such as Figure 2 As shown, when the flap 205 is lowered and closed, the sealing gasket 204 reduces the leakage of exhaust gas through the gap of the flap 205;

[0030] The inner wall of the connection frame 201 is slidably connected with a second card shaft 208 on both sides, and a spring 3 209 is fixedly connected to one end of the second card shaft 208. The other end of the spring 3 209 is fixedly connected to the connection frame 201. The second card shaft 208 is located at an end away from the spring 3 209 and penetrates into the installation groove 203. The end of the second card shaft 208 is connected with the plug plate 210, and the surface of the second card shaft 208 is against the extrusion rod 214. Figure 3 As shown, the end of the second clamping shaft 208 located in the movable groove 212 is arc-shaped, and after the end is squeezed by the push plate 213, the second clamping shaft 208 can be separated from the movable groove 212;

[0031] A flap 205 is slidably connected to the front and back of the connection frame 201 and located above the mounting groove 203. The bottom surface of the flap 205 is in active contact with the sealing gasket 204. A handle 206 is fixedly connected to the middle of the upper end of the flap 205. A connecting piece 207 is fixedly connected to the side of the flap 205. The two flaps 205 are connected to each other through the connecting piece 207. Figure 1-Figure 2 As shown, the two flaps 205 are notified to rise and fall at the same time through the connecting member 207;

[0032] The collecting mechanism 1 includes a lower connecting tube 101, the bottom of which is fixedly connected to a wind collecting scoop 102, the top of which is fixedly connected to the bottom surface of the connecting frame 201, and the lower connecting tube 101 is located below the filter screen 211, and a card shaft 103 is slidably connected to the inner side of the lower end of the wind collecting scoop 102, one end of which is fixedly connected to a spring 104, and the other end of the spring 104 is fixedly connected to the inner wall of the wind collecting scoop 102, and a pull rod 105 is also fixedly connected to the surface of the card shaft 103, and the pull rod 105 is connected to the wind collecting scoop 102 through the card shaft 103. The lower inner side of the wind collecting bucket 102 is also movably connected with a mounting frame 106, the bottom surface of the mounting frame 106 is fixedly installed with a plurality of negative pressure fans 107, the side inner wall of the mounting frame 106 is connected through the end of the card shaft 103, the inner wall of the mounting frame 106 is slidably connected with a handle 108 near the card shaft 103, the top of the handle 108 is fixedly connected with an extrusion shaft 110, the side of the extrusion shaft 110 is against the card shaft 103, the middle part of the outer wall of the handle 108 is fixedly connected with a spring 2 109, and the top of the spring 2 109 is fixedly connected with the mounting frame 106, such as Figure 4 As shown, the spring 2 109 pushes the handle 108 upward, thereby preventing the extrusion shaft 110 from moving downward.

[0033] The working principle of this utility model:

[0034] Start the negative pressure fan 107 to guide the printing waste gas into the wind collecting hopper 102. The waste gas passes through the lower connecting pipe 101 and enters the interior of the connecting frame 201. The waste gas is filtered by the filter 211. The filtered waste gas enters the upper connecting pipe 202 to participate in the subsequent purification steps.

[0035] When the filter screen 211 needs to be replaced, the plug board 210 with the new filter screen 211 is prepared, the handle 206 is pulled upward, the movable plate 205 is lifted and the installation groove 203 is exposed, and then one side of the plug shaft 215 of the new plug board 210 is inserted into the installation groove 203, and the plug shaft 215 is inserted into the movable groove 212 of the plug board 210 to be replaced, and the new plug board 210 is pushed, and the plug shaft 215 drives the extrusion rod 214 to move through the push plate 213 , the extrusion rod 214 pushes the end of the second card shaft 208, so that the second card shaft 208 is squeezed and the spring three 209 is compressed, and is pushed out of the movable groove 212, and the new plug board 210 is continuously pushed, so that the old plug board 210 is gradually pushed away from the installation groove 203. After the new plug board 210 is inserted in place, the second card shaft 208 is just aligned with the opening of the movable groove 212, and the spring three 209 pushes the second card shaft 208 to insert into the movable groove 212 and lock the plug board 210;

[0036] Secondly, when the installation frame 106 needs to be disassembled, the handle 108 is pulled downward, and the extrusion shaft 110 moves downward and pushes the clamping shaft 103 outward. The clamping shaft 103 squeezes the spring 104 and shrinks into the wind collecting scoop 102, thereby releasing the lock of the installation frame 106 inside the wind collecting scoop 102.

[0037] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A negative pressure collection device for printing waste gas, comprising a collection mechanism (1), a filtering mechanism (2) being arranged above the collection mechanism (1), and the collection mechanism (1) comprising a negative pressure fan (107); It is characterized in that Also includes: The filtering mechanism (2) comprises a plug plate (210), the middle part of the plug plate (210) is hollowed out, a filter screen (211) is fixedly installed inside the hollowed-out part of the plug plate (210), and movable grooves (212) are provided on the inner wall of the plug plate (210) and on both sides of the filter screen (211); One end of each of the two movable grooves (212) extends to the back surface of the plug board (210), an extrusion rod (214) is slidably connected inside the movable groove (212), and one end of the extrusion rod (214) close to the back side of the plug board (210) is fixedly connected to a push plate (213), and the push plate (213) abuts against the inner side of the movable groove (212); The front side of the plug plate (210) is symmetrically fixedly connected with an insertion shaft (215), and the length direction of the insertion shaft (215) is consistent with the length direction of the movable groove (212).

2. The negative pressure collection device for printing waste gas according to claim 1, characterized in that: The filtering mechanism (2) further comprises a connecting frame (201), an upper connecting pipe (202) being fixedly connected to the middle of the top of the connecting frame (201), a mounting groove (203) being provided in the middle of the connecting frame (201), a sealing gasket (204) being fixedly connected to the front and back of the connecting frame (201) and at the lower end of the mounting groove (203), and the inner wall of the mounting groove (203) being connected through the plug plate (210).

3. The negative pressure collection device for printing waste gas according to claim 2, characterized in that: Both sides of the inner wall of the connection frame (201) are slidably connected with a second card shaft (208), one end of the second card shaft (208) is fixedly connected with a third spring (209), and the other end of the third spring (209) is fixedly connected to the connection frame (201). The end of the second card shaft (208) that is located away from the third spring (209) penetrates into the installation groove (203), the end of the second card shaft (208) is connected with the plug plate (210), and the surface of the second card shaft (208) is against the extrusion rod (214).

4. The negative pressure collection device for printing waste gas according to claim 2, characterized in that: The front and back sides of the connection frame (201) and located above the mounting groove (203) are slidably connected with movable plates (205); the bottom surface of the movable plate (205) is in active contact with the sealing gasket (204); a handle (206) is fixedly connected to the middle of the upper end of the movable plate (205); a connecting piece (207) is fixedly connected to the side of the movable plate (205); and the two movable plates (205) are connected to each other via the connecting piece (207).

5. The negative pressure collection device for printing waste gas according to claim 1, characterized in that: The collecting mechanism (1) comprises a lower connecting pipe (101), the bottom of the lower connecting pipe (101) is fixedly connected to a wind collecting scoop (102), the top of the lower connecting pipe (101) is fixedly connected to the bottom surface of a connecting frame (201), and the lower connecting pipe (101) is located below the filter screen (211).

6. The negative pressure collection device for printing waste gas according to claim 5, characterized in that: The lower end of the wind collecting scoop (102) is slidably connected to a clamping shaft (103) on the inner side, one end of the clamping shaft (103) is fixedly connected to a spring (104), the other end of the spring (104) is fixedly connected to the inner wall of the wind collecting scoop (102), and the surface of the clamping shaft (103) is also fixedly connected to a pull rod (105), and the pull rod (105) is connected to the wind collecting scoop (102) through.

7. The negative pressure collection device for printing waste gas according to claim 5, characterized in that: The lower inner side of the wind collecting scoop (102) is also movably connected to a mounting frame (106), the bottom surface of the mounting frame (106) is fixedly mounted to a plurality of negative pressure fans (107), the side inner wall of the mounting frame (106) is through-connected to the end of the clamping shaft (103), a handle (108) is slidably connected to the inner wall of the mounting frame (106) near the clamping shaft (103), the top of the handle (108) is fixedly connected to an extrusion shaft (110), the side of the extrusion shaft (110) is in contact with the clamping shaft (103), a spring (109) is fixedly connected to the middle of the outer wall of the handle (108), and the top of the spring (109) is fixedly connected to the mounting frame (106).

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