Explosion-proof emergency treatment device for printing machine

Abstract

The utility model provides an explosion-proof emergency treatment device for a printing machine, which comprises an exhaust hood, an air pipe I and an air pipe II, the air pipe I is arranged between the exhaust hood and the air pipe II, the exhaust hood is positioned at the top of the printing machine, the air pipe II is arranged on a ceiling of a printing machine workshop, and the air pipe II is positioned at the top of the printing machine. The other end of the second air pipe penetrates through the outer side of the printing machine workshop to be connected with an output fan, and a xylene concentration sensor is arranged in the second air pipe. Compared with the prior art, the printing ink diluting device has the following beneficial effects that through the design of the air supplementing diluting mechanism and the air buffering mechanism, when the xylene concentration sensor detects that the concentration of a printing ink diluting agent in the second air pipe is relatively high and gives an alarm, air supplementing and air buffering work can be performed on the second air pipe, so that supplemented gas can be fully mixed with printing ink diluting agent gas; further, the concentration of the ink diluent in the air pipe II is diluted, so that the concentration of the ink diluent is within a safe range, and the effect of diluting the gas is achieved.

Description

Technical Field

[0001] The utility model discloses an explosion-proof emergency processing device for a printing machine, belonging to the field of explosion-proof equipment for a printing machine workshop. Background Art

[0002] Printing machines use ink thinners during the ink printing process. The main component of most ink thinners is xylene. However, this type of ink thinner is more flammable than ink and is highly volatile. When the density of the ink thinner reaches a certain level, it will explode when exposed to open flames. Therefore, during the operation of the printing machine, the ink thinner concentration in the ventilation system of the printing machine workshop cannot be too high, otherwise it may easily cause an explosion. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide an explosion-proof emergency treatment device for a printing press.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] An explosion-proof emergency handling device for a printing press comprises an exhaust hood, an air duct one and an air duct two, wherein the air duct one is installed between the exhaust hood and the air duct two, the exhaust hood is located on the top of the printing press, the air duct two is installed on the ceiling of the printing press workshop, the other end of the air duct two passes through the outside of the printing press workshop and is connected to an output fan, a xylene concentration sensor is arranged inside the air duct two, an air supply dilution mechanism is arranged on the air duct two, and a slow wind mechanism is arranged at the bottom of the air duct two.

[0006] Furthermore, the air supply and dilution mechanism includes a plurality of annular air ducts sleeved on the outside of the air duct No. 2 and an input fan fixed on the top of the air duct No. 2, the output end of the input fan is connected to the plurality of annular air ducts through an air supply pipe, the inner side of the annular air duct is connected and fixed to the air duct No. 2 through a support rod, and the annular air duct is connected to the air duct No. 2 through an air supply pipe of the same specification.

[0007] Furthermore, the air supply dilution mechanism also includes a plurality of groups of air outlet slots opened inside the second air duct, the air outlet slots are connected to the air supply duct via a connecting channel, a mounting slot is opened on one side of the air outlet slot, a mounting seat is provided inside the mounting slot, the mounting seat is movably connected to a sealing plate via a rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is pressed together with the inner wall of the mounting slot, and the other end of the torsion spring is pressed together with the sealing plate, and the sealing plate blocks the inner middle part of the air outlet slot.

[0008] Furthermore, an air guide plate is provided inside the air duct 2 and on the side of the air outlet slot, and an anti-corrosion coating is provided on the outer surface of the air guide plate.

[0009] Furthermore, a docking groove is provided at the end of the blocking plate, and a docking protrusion matching with the docking groove is provided on the inner wall of the air outlet slot.

[0010] Furthermore, the wind slowing mechanism includes a box body fixed to the bottom of the second air duct, the box body is located inside the annular air duct, a sliding plate is slidably connected to the inside of the box body, an electric push rod is provided between the bottom of the sliding plate and the bottom of the box body, a plurality of staggered wind-blocking rings are provided on the top of the sliding plate, and a through hole matching the wind-blocking ring is opened between the second air duct and the box body.

[0011] Furthermore, guide grooves are provided on both sides of the sliding plate, and guide strips matching the guide grooves are fixed on the inner walls on both sides of the box body.

[0012] Furthermore, a guide plate cooperating with the input fan is provided on the top of the second air duct.

[0013] Beneficial effects of the utility model:

[0014] Through the design of the air supply and dilution mechanism and the slow wind mechanism, when the xylene concentration sensor detects that the ink diluent concentration in the air duct two is high and issues an alarm, the air duct two can be supplied with air and slow wind operations so that the supplemented gas can be fully mixed with the ink diluent gas, thereby diluting the concentration of the ink diluent inside the air duct two, so that the concentration of the ink diluent is within a safe range, thereby achieving the effect of diluting the gas.

[0015] Through the design of the air supply and dilution mechanism, the input fan transports the external airflow to the interior of several annular air ducts through the air supply duct, and the annular air duct transports the airflow to the connecting channel inside the second air duct through two air supply ducts, so that the supplementary airflow can enter the interior of the air outlet slot, and the high-pressure airflow will impact the sealing plate, and the sealing plate will squeeze the torsion spring to realize the opening action of the air outlet slot, and the high-pressure airflow will then enter the interior of the second air duct, thereby achieving the effect of diluting the concentration of the ink diluent and reducing the risk of explosion.

[0016] Through the design of the air guide plate, the gas flowing in the second air duct will not impact and interfere with the airflow output by the air outlet slot, thereby ensuring the normal flow of the airflow output by the air outlet slot.

[0017] Through the design of the torsion spring, when the high-pressure airflow no longer impacts the blocking plate, the blocking plate is reset and rotated under the elastic force of the torsion spring to block the air outlet slot again.

[0018] Through the design of the slow wind mechanism, when the air supply and dilution mechanism replenishes air to the air duct two, the electric push rod will synchronously push the sliding plate, and the sliding plate will push a number of air blocking rings through the through hole to penetrate into the air duct two. The several air blocking rings will block and buffer the ink diluent gas transported from the air duct one to the air duct two, so that the high-pressure flowing ink diluent gas will not maintain the original concentration and flow in the air duct two, but will be locally buffered in the air duct two, slowing down the flow speed of the ink diluent gas, so that the ink diluent gas can be fully combined with the replenished gas, thereby achieving the effect of full dilution.

[0019] Through the design of the guide plate, the output and input air flows of the output fan and the input fan will not overlap, thereby preventing the output gas containing ink diluent from being absorbed by the input fan again for air replenishment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of an explosion-proof emergency treatment device for a printing press according to the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the air duct 2 of the explosion-proof emergency treatment device for a printing machine according to the utility model;

[0023] Figure 3 This is an enlarged schematic diagram of the structure of point A of an explosion-proof emergency treatment device for a printing press according to the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the wind blocking mechanism of an explosion-proof emergency treatment device for a printing press according to the utility model;

[0025] Figure 5 The utility model is a schematic diagram of the annular air duct structure of an explosion-proof emergency treatment device for a printing machine.

[0026] In the figure, 1. exhaust hood; 2. air duct one; 3. air duct two; 4. output fan; 5. annular air duct; 6. input fan; 7. air supply duct; 8. support rod; 9. air delivery duct; 10. air guide plate; 11. air outlet slot; 12. connecting channel; 13. mounting slot; 14. mounting seat; 15. blocking plate; 16. through hole; 17. box; 18. sliding plate; 19. electric push rod; 20. air blocking ring; 21. guide slot; 22. guide strip; 23. guide plate; 24. xylene concentration sensor. 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 in 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] See also Figure 1-Figure 5 The utility model provides a technical solution of an explosion-proof emergency handling device for a printing press, comprising an exhaust hood 1, an air duct 1 2 and an air duct 2 3, wherein the air duct 1 2 is installed between the exhaust hood 1 and the air duct 2 3, the exhaust hood 1 is located on the top of the printing press, the air duct 2 3 is installed on the ceiling of the printing press workshop, the other end of the air duct 2 3 penetrates to the outside of the printing press workshop and is connected to an output fan 4, a xylene concentration sensor 24 is arranged inside the air duct 2 3, an air supply dilution mechanism is arranged on the air duct 2 3, and a slow wind mechanism is arranged at the bottom of the air duct 2 3; through the design of the air supply dilution mechanism and the slow wind mechanism, when the xylene concentration sensor 24 detects that the ink diluent concentration in the air duct 2 3 is high and an alarm is issued, the air duct 2 3 can be supplied with air and slow wind, so that the supplemented gas can be fully mixed with the ink diluent gas, thereby diluting the concentration of the ink diluent in the air duct 2 3, so that the concentration of the ink diluent is within a safe range, thereby achieving the effect of diluting the gas.

[0029] See also Figure 1-Figure 3 and Figure 5The air supply dilution mechanism includes a plurality of annular air ducts 5 sleeved on the outside of the air duct 2 3 and an input fan 6 fixed on the top of the air duct 2 3. The output end of the input fan 6 is connected to the plurality of annular air ducts 5 through an air supply pipe 7. The inner side of the annular air duct 5 is connected and fixed to the air duct 2 3 through a support rod 8. The annular air duct 5 is connected to the air duct 2 3 with an air supply pipe 9 of the same specification. The air supply dilution mechanism also includes a plurality of groups of air outlet slots 11 opened inside the air duct 2 3. The air outlet slots 11 are connected to the air supply pipe 9 through a connecting channel 12. A mounting slot 13 is opened on one side of the air outlet slot 11. A mounting seat 14 is provided inside the mounting slot 13. The mounting seat 14 is movably connected to the blocking plate 15 through a rotating shaft. A torsion spring is sleeved on the rotating shaft, one end of the torsion spring is squeezed together with the inner wall of the installation groove 13, and the other end of the torsion spring is squeezed together with the blocking plate 15, and the blocking plate 15 blocks the inner middle part of the air outlet slot 11; through the design of the air supply dilution mechanism, the input fan 6 conveys the external airflow to the interior of several annular air ducts 5 through the air supply pipe 7, and the annular air duct 5 is conveyed to the connecting channel 12 inside the air duct 2 3 through two air supply pipes 9, so that the supplementary airflow can enter the interior of the air outlet slot 11, and the high-pressure airflow will impact the blocking plate 15, and the blocking plate 15 squeezes the torsion spring to realize the opening action of the air outlet slot 11, and the high-pressure airflow will then enter the interior of the air duct 2 3, thereby achieving the effect of diluting the ink diluent concentration and reducing the risk of explosion.

[0030] See also Figure 3 An air guide plate 10 is provided inside the air duct 2 3 and on the side of the air outlet slot 11, and an anti-corrosion coating is provided on the outer surface of the air guide plate 10; through the design of the air guide plate 10, the gas flowing in the air duct 2 3 will not impact and interfere with the airflow output by the air outlet slot 11, thereby ensuring the normal flow of the airflow output by the air outlet slot 11.

[0031] See also Figure 3 A docking groove is provided at the end of the blocking plate 15, and a docking protrusion matching the docking groove is provided on the inner wall of the air outlet slot 11; through the design of the docking groove and the docking protrusion, the blocking plate 15 and the inner wall of the air outlet slot 11 are docked together.

[0032] See also Figure 1 , Figure 4The slow wind mechanism comprises a box 17 fixed to the bottom of the air duct 2 3, the box 17 is located inside the annular air duct 5, a sliding plate 18 is slidably connected inside the box 17, an electric push rod 19 is provided between the bottom of the sliding plate 18 and the bottom of the box 17, a plurality of staggered wind blocking rings 20 are provided on the top of the sliding plate 18, and a through hole 16 matching with the wind blocking ring 20 is provided between the air duct 2 3 and the box 17; through the design of the slow wind mechanism, in the process of the air supply dilution mechanism replenishing the air to the air duct 2 3, Synchronously, the electric push rod 19 will push the sliding plate 18, and the sliding plate 18 will push a number of air blocking rings 20 to pass through the through hole 16 into the interior of the air duct 2 3. The several air blocking rings 20 will block and buffer the ink diluent gas transported from the air duct 1 2 to the interior of the air duct 2 3, so that the high-pressure flowing ink diluent gas will not maintain the original concentration and flow in the air duct 2 3, but will be locally buffered in the air duct 2 3, slowing down the flow speed of the ink diluent gas, so that the ink diluent gas can be fully combined with the supplementary gas, thereby achieving the effect of full dilution.

[0033] See also Figure 4 Guide grooves 21 are provided on both sides of the sliding plate 18, and guide strips 22 matching the guide grooves 21 are fixed on the inner walls on both sides of the box body 17; through the design of the guide grooves 21 and the guide strips 22, a linear sliding connection is achieved between the sliding plate 18 and the box body 17.

[0034] See also Figure 1 The top of the air duct 23 is provided with a guide plate 23 that cooperates with the input fan 6; through the design of the guide plate 23, the airflows output and input by the output fan 4 and the input fan 6 will not overlap, avoiding the output gas containing ink diluent to be absorbed by the input fan 6 again for air replenishment.

[0035] When in use, the output fan 4 transports the gas in the printing press workshop to the outside of the workshop through the exhaust hood 1, the air duct 1 2, and the air duct 2 3. This part of the gas contains ink diluent and other chemical gases. When the xylene concentration sensor 24 detects that the ink diluent concentration in the air duct 2 3 is high, the controller starts the air supply dilution mechanism and the slow wind mechanism. The air supply dilution mechanism supplies air to the inside of the air duct 2 3, thereby diluting the concentration of the ink diluent in the air duct 2 3, so that the concentration of the ink diluent is within a safe range. The synchronous slow wind mechanism buffers the ink diluent gas transported in the air duct 2 3, so that the local slow flow of the ink diluent gas can be fully combined with the gas supplemented by the air supply dilution mechanism, thereby achieving the effect of diluting the gas.

[0036] The specific operation mode of the air supply dilution mechanism is as follows: the input fan 6 delivers the external airflow to the inside of the plurality of annular air ducts 5 through the air supply pipe 7, and the annular air duct 5 delivers the airflow to the connecting channel 12 inside the air duct 2 3 through the two air delivery pipes 9, so that the supplementary airflow can enter the inside of the air outlet slot 11, and the high-pressure airflow will impact the blocking plate 15, and the blocking plate 15 will squeeze the torsion spring to realize the opening action of the air outlet slot 11, and the high-pressure airflow will then enter the inside of the air duct 2 3, thereby achieving the effect of diluting the ink diluent concentration and reducing the risk of deflagration;

[0037] The specific operation mode of the slow wind mechanism is as follows: when the air supply and dilution mechanism supplies air to the air duct 2 3, the electric push rod 19 will synchronously push the sliding plate 18, and the sliding plate 18 will push a plurality of air blocking rings 20 through the through hole 16 to penetrate into the air duct 2 3. The plurality of air blocking rings 20 will block and buffer the ink diluent gas transported from the air duct 1 2 to the air duct 2 3, so that the high-pressure flowing ink diluent gas will not maintain the original concentration and flow in the air duct 2 3, but will be locally buffered in the air duct 2 3, slowing down the flow speed of the ink diluent gas, so that the ink diluent gas can be fully combined with the supplemented gas, thereby achieving the effect of full dilution.

[0038] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An explosion-proof emergency treatment device for a printing press, characterized in that: The invention comprises an exhaust hood (1), an air duct 1 (2) and an air duct 2 (3), wherein the air duct 1 (2) is installed between the exhaust hood (1) and the air duct 2 (3), the exhaust hood (1) is located on the top of a printing press, the air duct 2 (3) is installed on the ceiling of a printing press workshop, the other end of the air duct 2 (3) passes through the outside of the printing press workshop and is connected to an output fan (4), a xylene concentration sensor (24) is arranged inside the air duct 2 (3), an air supply dilution mechanism is arranged on the air duct 2 (3), and a slow wind mechanism is arranged at the bottom of the air duct 2 (3).

2. The explosion-proof emergency handling device for a printing press according to claim 1, characterized in that: The air supply and dilution mechanism comprises a plurality of annular air ducts (5) sleeved on the outside of the second air duct (3) and an input fan (6) fixed on the top of the second air duct (3); the output end of the input fan (6) is connected to the plurality of annular air ducts (5) through an air supply pipe (7); the inner side of the annular air duct (5) is connected and fixed to the second air duct (3) through a support rod (8); the annular air duct (5) is connected to the second air duct (3) through an air supply pipe (9) of the same specification.

3. The explosion-proof emergency handling device for a printing press according to claim 2, characterized in that: The air supply and dilution mechanism also includes a plurality of groups of air outlet slots (11) provided inside the air duct (3); the air outlet slots (11) are connected to the air supply pipe (9) via a connecting channel (12); a mounting slot (13) is provided on one side inside the air outlet slot (11); a mounting seat (14) is provided inside the mounting slot (13); the mounting seat (14) is movably connected to a sealing plate (15) via a rotating shaft; a torsion spring is sleeved on the rotating shaft; one end of the torsion spring is pressed together with the inner wall of the mounting slot (13); the other end of the torsion spring is pressed together with the sealing plate (15); the sealing plate (15) blocks the inner middle part of the air outlet slot (11).

4. The explosion-proof emergency handling device for a printing press according to claim 3, characterized in that: An air guide plate (10) is provided inside the second air duct (3) and on the side of the air outlet slot (11), and an anti-corrosion coating is provided on the outer surface of the air guide plate (10).

5. The explosion-proof emergency treatment device for a printing press according to claim 4, characterized in that: The end of the blocking plate (15) is provided with a docking groove, and the inner wall of the air outlet slot (11) is provided with a docking protrusion that matches the docking groove.

6. The explosion-proof emergency handling device for a printing press according to claim 5, characterized in that: The wind slowing mechanism comprises a box body (17) fixed at the bottom of the second air duct (3); the box body (17) is located inside the annular air duct (5); a sliding plate (18) is slidably connected inside the box body (17); an electric push rod (19) is provided between the bottom of the sliding plate (18) and the bottom of the box body (17); a plurality of staggered wind blocking rings (20) are provided at the top of the sliding plate (18); and a through hole (16) matching with the wind blocking ring (20) is provided between the second air duct (3) and the box body (17).

7. The explosion-proof emergency treatment device for a printing press according to claim 6, characterized in that: Guide grooves (21) are provided on both sides of the sliding plate (18), and guide strips (22) matching the guide grooves (21) are fixed on the inner walls on both sides of the box body (17).

8. The explosion-proof emergency treatment device for a printing press according to claim 7, characterized in that: The top of the second air duct (3) is provided with a guide plate (23) which matches the input fan (6).

Images