An intaglio printing device with a fire prevention function

Abstract

An intaglio printing device with a fire prevention function, comprising a color group, a wire groove column, a printing roller, a printing support, a fire prevention nozzle, a fire extinguisher, an air extraction pump, an air suction head, a transmission mechanism, a driving mechanism and a filter element. When the air extraction pump is started, the fire prevention nozzle is used for heat dissipation. At this time, the hot gas will be discharged from the inside of the printing support through the air extraction pump. During this process, dust and debris will be intercepted by the filter element, thereby preventing the main pipeline from being blocked and ensuring the normal use of the subsequent carbon dioxide fire extinguisher. When it is necessary to clean the filter element, only need to drive the transmission mechanism through the driving mechanism. The transmission mechanism will misalign the air suction head and the fire prevention nozzle and move the filter element out of the side wall of the wire groove column. At this time, the filter element can be replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of intaglio printing presses, and particularly to an intaglio printing device with a fire prevention function. Background Art

[0002] An intaglio printing press is a machine that uses an intaglio plate for printing. The graphic part of the printing plate is recessed, and the blank part is on the same plane as the outer circle of the printing plate cylinder. It is one of the most common printing presses in the current market and is widely used. During the operation of the intaglio printing press, due to lack of oil in the equipment bearings, displacement of components, or failure to clean the wound material in a timely manner, it may cause heat generation due to friction and ignite the material or printing ink (printing ink is a flammable item).

[0003] In response to this, existing intaglio printing presses generally are equipped with a heat dissipation device, that is, in the form of an exhaust fan. The suction pipe of the exhaust fan is aligned with the position that needs to be cooled, thereby preventing the phenomenon of heat accumulation. In addition, in order to deal with the situation of fire, a carbon dioxide fire extinguishing device is also arranged on the wire trough column (the top is used for wiring, such as electric wires and control wires) of the printing press to extinguish the fire. In order to reduce the use of nozzles, the heat dissipation pipeline and the fire extinguishing pipeline are connected together, and the heat dissipation nozzle and the fire extinguishing nozzle share the same fire nozzle. Through the cooperation of several valves in the pipeline, the fire extinguishing function and the heat dissipation function of the fire nozzle are made non-interfering. However, in the above way of connecting the heat dissipation pipeline and the fire extinguishing pipeline together, if debris or dust is inhaled during the heat dissipation process, resulting in blockage of the main pipeline, it will affect the normal use of the carbon dioxide fire extinguishing device, and thus the fire cannot be extinguished in a timely manner, leading to the spread of the fire. In addition, because the debris or dust is blocked on the pipeline, it is also more troublesome to clean. Summary of the Invention

[0004] The purpose of the present invention is to provide an intaglio printing device with a fire prevention function to solve the problems mentioned in the above background art.

[0005] To achieve the above object, the present invention provides an intaglio printing apparatus with a fire prevention function, including a plurality of color groups connected in sequence. Each color group includes a printing bracket with a wire groove column and a printing roller inside. The printing roller is located below the wire groove column. It is characterized in that a plurality of fire prevention nozzles for heat dissipation or fire extinguishing are provided inside the wire groove column. The fire prevention nozzles are respectively communicated with a fire extinguisher and an air extraction pump through a pipe network. The fire prevention nozzles can penetrate through the bottom of the wire groove column under the action of a driving mechanism. A suction head is slidably connected to the bottom of the wire groove column. The suction head is connected to the driving mechanism through a transmission mechanism. A quick-release filter element is provided inside the suction head. The transmission mechanism is used to convert the vertical movement of the fire prevention nozzle into the horizontal movement of the suction head. When the fire prevention nozzle penetrates through the wire groove column, the suction head is misaligned with the fire prevention nozzle, and at the same time, the filter element will move out of the side wall of the wire groove column.

[0006] When the fire prevention nozzle is used for heat dissipation, the axis of the suction head coincides with the axis of the fire prevention nozzle, and the gas will flow through the suction head, the fire prevention nozzle, the pipe network and the air extraction pump in sequence.

[0007] Before the fire prevention nozzle extinguishes the fire or when the filter element needs to be replaced, the driving mechanism will drive the fire prevention nozzle to penetrate through the wire groove column and at the same time make the suction head misaligned with the fire prevention nozzle through the transmission mechanism. When the fire prevention nozzle penetrates through the wire groove column, the filter element moves out of the side wall of the wire groove column.

[0008] Furthermore, the suction head includes a moving plate slidably connected to the wire groove column, a first tapered cavity fixed to the bottom of the moving plate, a dust collection cavity communicated with the bottom of the first tapered cavity, a horn-shaped expansion pipe fixed to the bottom of the dust collection cavity, and an air suction pipe for communicating the horn-shaped expansion pipe with the first tapered cavity. The moving plate is connected to the driving mechanism through the transmission mechanism. The moving plate is detachably connected to the filter element, and the main body of the filter element is located inside the first tapered cavity. The bottom of the filter element is communicated with the first tapered cavity through filter holes. The inlet direction of the port of the air suction pipe connected to the first tapered cavity is consistent with the tangential direction of the cross section of the first tapered cavity. The first tapered cavity is wider at the top and narrower at the bottom.

[0009] Furthermore, two air suction pipes are symmetrically provided. The dust collection cavity is made of a transparent material and a discharge door is provided on the side wall.

[0010] Furthermore, sliders are provided at both ends of the moving plate. A guide groove is fixed to the bottom of the wire groove column. A slide rail is provided inside the guide groove. The sliders are located inside the guide groove and are slidably connected to the slide rail.

[0011] Furthermore, a sealing ring 1 is embedded in the top of the movable plate, and when the filter element slides out of the side wall of the wire slot column, a portion of the sealing ring 1 is in close contact with the bottom of the wire slot column.

[0012] Furthermore, the movable plate is provided with a plurality of limit grooves, the filter element includes a conical cavity 2 embedded with filter cotton, a plurality of limit platforms 1 fixedly connected to the top of the conical cavity 2, and a limit ring 1 fixedly connected to the limit platform 1, the bottom of the conical cavity 2 is provided with a plurality of filter holes, the bottom of the limit ring 1 abuts against the filter cotton, and the limit platform 1 is provided with a limit platform 2 embedded in the limit groove.

[0013] Furthermore, the second conical cavity is wider at the top and narrower at the bottom.

[0014] Furthermore, a permanent magnet for attracting the second limiting platform is fixedly connected inside the limiting groove.

[0015] Furthermore, the limiting ring 1 is fixedly connected to a plurality of limiting rings 2 via a plurality of connecting platforms, the sizes of the plurality of limiting rings 2 gradually decrease, and the bottoms of the plurality of limiting rings 2 all abut against the filter cotton.

[0016] Furthermore, a plurality of notches aligned with the air suction head are provided on the side wall of the wire trough column. When the air suction head and the fire sprinkler are misaligned and the fire sprinkler moves to the limit, the filter element is located at one of the notches; and the sealing ring is not completely located inside the notch; the maximum diameter of the filter element is smaller than the width of the notch, and the end of the notch facing away from the filter element is closed.

[0017] Furthermore, a plurality of fixed sleeves are fixedly connected to the interior of the wire trough column, the fire sprinkler includes a movable tube slidably connected to the fixed sleeve, the top of the movable tube is connected to the driving mechanism via a connecting rod 1, the upper part of the movable tube is connected to the pipe network, the driving mechanism includes a movable rod 1 fixedly connected to a plurality of connecting rods 1, and a telescopic cylinder fixed to the top of the wire trough column, the telescopic rod of the telescopic cylinder passes through the side wall of the wire trough column and is fixedly connected to the movable rod 1, and both ends of the movable rod 1 are respectively connected to the transmission mechanism.

[0018] Furthermore, a sealing sleeve is fixedly connected to the interior of the fixed sleeve, and the sealing sleeve is located between the fixed sleeve and the movable tube.

[0019] Furthermore, the printing support is provided with a side hole connected to the interior of the wire slot column, and the transmission mechanism includes a rack 1 fixed to the end of the moving rod 1, a gear 1 meshing with the rack 1, a gear 2 fixed to the same rotating shaft as the gear 1, a rack 2 meshing with the gear 2, a push-pull rod fixed to the rack 2, and a connecting rod 2 fixed to the push-pull rod; one end of the connecting rod 2 facing away from the push-pull rod is fixed to the suction head, a supporting ear is fixed to the side hole, the rotating shaft is rotatably connected to the side hole, the rack 1 is inserted into the side wall of the side hole and is slidably connected to the printing support, the rack 2 is slidably connected to the bottom inner wall of the wire slot column and the rack 2 passes through the side wall of the wire slot column; the gear 1 is located between the push-pull rod and the rack 1.

[0020] Furthermore, the diameter of the tooth top circle of the gear one is smaller than the diameter of the tooth top circle of the gear two.

[0021] Furthermore, the lower part of the movable tube is slidably connected with a conical air distribution plate through an elastic mechanism, and the conical air distribution plate includes a top plate provided with a plurality of through holes, a conical ring plate fixed to the bottom of the top plate, and a circular ring plate fixed to the bottom of the conical ring plate, the circular ring plate is slidably connected to the inner wall of the movable tube, and the bottom of the circular ring plate is provided with a plurality of protrusions, and the protrusions abut against the end surface of the movable tube under the action of the elastic mechanism, and when the conical air distribution plate moves downward under the action of air pressure, an outward-expanding trumpet-shaped air passage is formed between the conical ring plate and the inner wall of the movable tube, and as the air pressure increases, the width of the trumpet-shaped air passage increases.

[0022] Furthermore, a plurality of sliding grooves and an installation cavity connected with the sliding grooves and located inside the moving tube are circumferentially distributed on the lower part of the moving tube, the elastic mechanism comprises a sliding rod fixedly connected to the top of the protrusion and slidably connected to the sliding groove, a positioning rod fixedly connected to the inside of the installation cavity, a pressure plate slidably connected to the positioning rod and fixedly connected to the top of the sliding rod through a limiting platform three, and a spring sleeved on the outer circle of the positioning rod; the two ends of the spring are respectively in contact with the bottom of the pressure plate and the bottom of the installation cavity, the sliding groove is provided with a notch two connected with the inside of the installation cavity, and the limiting platform three slides in the notch two.

[0023] Furthermore, the top of the installation cavity is provided with a chamfer.

[0024] Further, the pipe network includes a left air distribution pipe network connected to several of the fire sprinklers on the left and a right air distribution pipe network connected to several of the fire sprinklers on the right. The collecting pipe 1 of the left air distribution pipe network and the collecting pipe 2 of the right air distribution pipe network are connected to the main collecting pipe. The main collecting pipe is respectively connected to the air spraying pipe of the fire extinguisher and the air extraction pipe of the air extraction pump through a tee joint. A valve 1 is provided on the air extraction pipe, a valve 2 is provided on the air spraying pipe, a valve 3 is provided on the collecting pipe 1, and a valve 4 is provided on the collecting pipe 2. The valve 1, the valve 2, the valve 3, the valve 4, the fire extinguisher, and the air extraction pump are all connected to the controller.

[0025] Further, several temperature sensors and smoke sensors are provided at the bottom of the wire trough column and on the inner side of the printing bracket near the printing roller. A flame detector is also installed on the top of the printing bracket. The flame detector, the temperature sensors, and the smoke sensors are all connected to the controller.

[0026] Further, a temperature sensor is provided on the inner side of the printing bracket near the printing roller. The temperature sensor is connected to the controller. The standard power pt0 and the standard temperature T0 of the air extraction pump are pre-input into the controller. The controller calculates the working power pt of the air extraction pump according to T0, pt0, and the actual temperature T feedback by the temperature sensor.

[0027] Wherein, 0.2T0 ≤ T ≤ 6T0, x = T / T0.

[0028] The beneficial effects of the present invention are as follows: An air suction head is provided on the present invention, and a filter element is provided inside the air suction head. When the air extraction pump is started, the fire sprinkler is used for heat dissipation. At this time, the hot gas will be discharged from the inside of the printing bracket through the air extraction pump. During this process, dust and debris will be intercepted by the filter element, thereby preventing the main pipeline from being blocked and ensuring the normal use of the subsequent carbon dioxide fire extinguisher. When it is necessary to clean the filter element, only need to drive the transmission mechanism through the driving mechanism. The transmission mechanism will misalign the air suction head and the fire sprinkler and move the filter element out of the side wall of the wire trough column. At this time, the filter element can be replaced. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0030] Figure 1 It is the overall structural schematic diagram of a color group in the intaglio printing equipment;

[0031] Figure 2 It is the enlarged partial top view schematic diagram of the wire trough column;

[0032] Figure 3 It is an enlarged schematic diagram of a partial section of the wire duct column;

[0033] Figure 4 It is a schematic sectional view of the suction head;

[0034] Figure 5 is Figure 4 an enlarged schematic diagram at position A in

[0035] Figure 6 It is a schematic sectional view of the fire sprinkler head;

[0036] Figure 7 It is a schematic sectional view of the installation cavity.

[0037] In the figure: 1. Wire duct column; 2. Side hole; 3. Exhaust pump; 4. Fire extinguisher; 5. Printing roller; 6. Notch 1; 7. Telescopic cylinder; 8. Printing bracket; 9. Push-pull rod; 10. Link rod 2; 11. Moving pipe; 12. Suction pipe; 13. Dust collection cavity; 14. Flared expansion pipe; 15. Conical cavity 1; 16. Moving plate; 17. Suction head; 18. Fixed sleeve; 19. Guide groove; 20. Rack 2; 21. Gear 2; 22. Rack 1; 23. Gear 1; 24. Limit platform 1; 25. Limit ring 1; 26. Filter cotton; 27. Conical cavity 2; 28. Filter element; 29. Sealing ring 1; 30. Limit groove; 31. Limit platform 2; 32. Link rod 1; 33. Sealing sleeve; 34. Installation cavity; 35. Top plate; 36. Conical ring plate; 37. Circular ring plate; 38. Conical air distribution plate; 39. Sliding rod; 40. Chamfer; 41. Pressing plate; 42. Positioning rod; 43. Notch 2; 44. Spring; 45. Moving rod 1. Specific embodiments

[0038] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0039] In one embodiment, as Figures 1-7As shown in the figure, a gravure printing device with a fire prevention function includes a number of color groups connected in sequence to achieve printing. Since the structures of the color groups are similar, in this embodiment, the fire prevention function of the entire gravure printing device is reflected by the fire prevention function of one color group. Specifically, the color group includes a printing bracket 8 with a wire groove column 1 and a printing roller 5 inside. The printing roller 5 is located below the wire groove column 1. It is characterized in that a number of fire prevention nozzles for heat dissipation or fire extinguishing are provided inside the wire groove column 1. The fire prevention nozzles are respectively connected to a fire extinguisher 4 and an air extraction pump 3 through a pipe network. Under the action of a driving mechanism, the fire prevention nozzles can penetrate the bottom of the wire groove column 1. A suction head 17 is slidably connected to the bottom of the wire groove column 1. The suction head 17 is connected to the driving mechanism through a transmission mechanism. A quick-release filter element 28 is provided inside the suction head 17. The transmission mechanism is used to convert the vertical movement of the fire prevention nozzles into the horizontal movement of the suction head 17. Since the printing roller 5 contains volatile printing ink, the fire extinguishing process at the printing roller 5 is taken as an example, but the present invention is not limited thereto. In other embodiments, the fire prevention nozzles can also be installed at other important intermediate rollers or at a certain component where heat is likely to accumulate or the equipment cost is relatively high. There is no need to elaborate here. In this embodiment, a number of temperature sensors and smoke sensors are provided at the bottom of the wire groove column 1 and on the inner side of the printing bracket 8 near the printing roller 5 to judge whether to activate the fire extinguisher 4. The fire extinguisher 4 can use a common carbon dioxide fire extinguisher, as long as it can be opened in time when the temperature sensor or smoke sensor sends a signal to the carbon dioxide fire extinguisher. Since this technology is relatively conventional and only involves a simple control circuit, there is no need to elaborate here.

[0040] Only one of the fire extinguisher 4 and the air extraction pump 3 is started during use. Before a fire breaks out, the air extraction pump 3 is started. At this time, the fire prevention nozzles are used for heat dissipation. The axis of the suction head 17 coincides with the axis of the fire prevention nozzles. The hot gas will flow through the suction head 17, the filter element 28, the fire prevention nozzles, the pipe network and the air extraction pump 3 in sequence and be discharged from the air extraction pump 3. During this process, dust and debris (debris of the printed matter) will be intercepted by the filter element 28, thus preventing dust and debris from flowing into the main pipeline of the pipe network and preventing the main pipeline from being blocked. Furthermore, it ensures the normal use of the subsequent carbon dioxide fire extinguisher. When it is necessary to clean the filter element 28, only need to drive the fire prevention nozzles to penetrate the bottom of the wire groove column 1 through the driving mechanism. During the process of the fire prevention nozzles penetrating the bottom of the wire groove column 1, the transmission mechanism will misalign the suction head 17 with the fire prevention nozzles. When the fire prevention nozzles penetrate the bottom of the wire groove column 1, the filter element 28 will also move out of the side wall of the wire groove column 1. At this time, the filter element 28 can be replaced. When a fire breaks out, the air extraction pump 3 stops. The driving mechanism will drive the fire prevention nozzles to penetrate the bottom of the wire groove column 1 and at the same time misalign the suction head 17 with the fire prevention nozzles through the transmission mechanism. When the fire prevention nozzles penetrate the bottom of the wire groove column 1, the filter element 28 moves out of the side wall of the wire groove column 1. Subsequently, the fire extinguisher 4 is started, and carbon dioxide will be ejected from the fire prevention nozzles to extinguish the fire.

[0041] In addition, when the air extraction pump 3 is started, the fire sprinkler can also adsorb the volatilized printing ink, reducing the occurrence of ignition of the volatilized printing ink due to static electricity or frictional heat generation. A flame detector is installed at the top of the printing support 8. The flame detector, temperature sensor, and smoke sensor are all connected to the controller, and the opening of the carbon dioxide fire extinguisher is controlled by the controller. The detection direction of the flame detector is aligned with the position of the printing support 8 that is prone to catching fire, such as the printing roller 5. The flame detector can use spectral detection technology to identify the flame, such as an infrared flame detector. When a flame is identified, the controller will start the carbon dioxide fire extinguisher to extinguish the fire. A voice control module is also provided inside the controller. When the staff discovers a fire, they can control the start of the above-mentioned fire extinguishing process through voice. Specifically, the staff only need to shout out the fire extinguishing command, and the voice control module will turn off the air extraction pump 3 and start the fire extinguisher 4 to achieve the fire extinguishing function. During this process, the suction head 17 will also be misaligned with the fire sprinkler, thus ensuring the fire extinguishing quality of the fire sprinkler.

[0042] In this embodiment, the suction head 17 includes a moving plate 16 slidably connected to the wire groove column 1, a first conical cavity 15 fixed to the bottom of the moving plate 16, a dust collection cavity 13 communicated with the bottom of the first conical cavity 15, a horn-shaped expansion tube 14 fixed to the bottom of the dust collection cavity 13, and an air suction pipe 12 for communicating the horn-shaped expansion tube 14 with the first conical cavity 15. Sliders are provided at both ends of the moving plate 16. A guide groove 19 is fixed to the bottom of the wire groove column 1. A slide rail is provided inside the guide groove 19. The sliders are located inside the guide groove 19 and slidably connected to the slide rail. The moving plate 16 is connected to the driving mechanism through a transmission mechanism, thereby realizing the movement of the moving plate 16. The moving plate 16 is detachably connected to the filter element 28, and the main body of the filter element 28 is located inside the first conical cavity 15. The bottom of the filter element 28 is communicated with the first conical cavity 15 through filter holes. The inlet direction of the port of the air suction pipe 12 connected to the first conical cavity 15 is consistent with the tangential direction of the cross-section of the first conical cavity 15. The first conical cavity 15 is wider at the top and narrower at the bottom. Therefore, when the air extraction pump 3 is started, the hot gas entering from the air suction pipe 12 will spiral downward along the inner wall of the first conical cavity 15 and enter the filter element 28 through the filter holes for filtration and then enter the pipe network. Among them, the first conical cavity 15 utilizes the principle of cyclone separation to drop large-sized debris or dust into the dust collection cavity 13 for collection. Small-sized debris or dust is intercepted by the filter element 28. Furthermore, the quality of the gas entering the pipe network is ensured, preventing the pipe network from being blocked. Two air suction pipes 12 are symmetrically provided to improve the air suction intensity.

[0043] The dust collection chamber 13 is made of a transparent material and a discharge door is provided on the side wall, which is convenient for observing the dust collection state of the dust collection chamber 13 and convenient for discharging materials; the discharge door can adopt the form of a magnetic suction door, which is convenient for opening and closing; a first sealing ring 29 is embedded at the top of the moving plate 16 to ensure airtightness; at the same time, when the filter element 28 slides out of the side wall of the wire groove column 1, a part of the first sealing ring 29 is in close contact with the bottom of the wire groove column 1; since the first sealing ring 29 generates a seal through its own deformation, therefore, when the filter element 28 slides out of the side wall of the wire groove column 1, a part of the first sealing ring 29 is in a deformed state, which is convenient for the reset of the moving plate 16; at the same time, it is prevented that when the moving plate 16 is reset due to the first sealing ring 29 completely sliding out of the side wall of the wire groove column 1, the normal first sealing ring 29 hits the side wall of the wire groove column 1, causing the first sealing ring 29 to fall off.

[0044] There are four limiting grooves 30 circumferentially distributed on the moving plate 16. The filter element 28 includes a conical cavity two 27 embedded with filter cotton 26, four limiting platforms one 24 fixedly connected to the top of the conical cavity two 27, and a limiting ring one 25 fixedly connected to the limiting platform one 24. A number of filter holes are provided at the bottom of the conical cavity two 27. The bottom of the limiting ring one 25 abuts against the filter cotton 26. A limiting platform two 31 embedded inside the limiting groove 30 is provided on the limiting platform one 24; and the conical cavity two 27 is wider at the top and narrower at the bottom. When the filter element 28 needs to be taken out, only the limiting platform one 24 needs to be rotated to turn the limiting platform two 31 away from the limiting groove 30, and then the filter element 28 can be taken out; in order to save costs, the filter cotton 26 can be directly flattened and taken out from the through hole of the limiting ring one 25 (the filter cotton 26 has a large amount of deformation), and only the filter cotton 26 needs to be replaced. After the filter holes are cleaned, the new filter cotton 26 can be stuffed into the conical cavity two 27 through the through hole of the limiting ring one 25 after being extruded and deformed, and then the filter cotton 26 will fill the conical cavity two 27 under the action of its own resilience; and the limiting ring one 25 can be used to prevent the filter cotton 26 from being sucked out during normal filtration; in order to improve the limiting quality of the filter cotton 26, a number of limiting rings two are fixedly connected to the limiting ring one 25 through a number of connecting platforms. The sizes of the number of limiting rings two gradually decrease, and the bottoms of the number of limiting rings two all abut against the filter cotton 26, so as to further prevent the filter cotton 26 from being sucked out during normal filtration. It only needs to ensure that the filter cotton 26 can be taken out from the limiting ring two with the smallest diameter in the deformed state of being manually flattened; in addition, a permanent magnet for attracting and combining the limiting platform two 31 is fixedly connected inside the limiting groove 30 to prevent the filter element 28 from shifting during normal filtration; in addition, a number of notches one 6 aligned with the suction head 17 are provided on the side wall of the wire groove column 1. When the suction head 17 is misaligned with the fire sprinkler and the fire sprinkler moves to the limit, the filter element 28 is located at the notch one 6; and the sealing ring one 29 is not completely located inside the notch one 6; the maximum diameter size of the filter element 28 is smaller than the width size of the notch one 6, thereby reducing the moving distance of the filter element 28, making the equipment structure more compact and preventing the movement of the suction head 17 from affecting the normal printing of the printing machine, and the end of the notch one 6 facing away from the filter element 28 is closed, reducing the influence on other components inside the wire groove column 1.

[0045] In other embodiments, a plurality of fixed sleeves 18 are fixedly connected to the interior of the wire trough column 1, and the fire sprinkler includes a moving tube 11 slidably connected to the fixed sleeve 18, the top of the moving tube 11 is connected to the driving mechanism through a connecting rod 32, and the upper part of the moving tube 11 is connected to the pipe network, and the driving mechanism includes a moving rod 45 fixedly connected to a plurality of connecting rods 32, and a telescopic cylinder 7 fixed to the top of the wire trough column 1, and the telescopic rod of the telescopic cylinder 7 penetrates the side wall of the wire trough column 1 and is fixedly connected to the moving rod 45, and the two ends of the moving rod 45 are respectively connected to the transmission mechanism, wherein the telescopic cylinder 7 is connected to the moving rod 45. The cylinder 7 may be a hydraulic cylinder or a pneumatic cylinder, wherein the hydraulic system connected to the telescopic cylinder 7 is also connected to the controller, so as to facilitate the timely regulation of the telescopic cylinder 7; when a fire occurs, the controller will control the telescopic cylinder 7 to start, so as to move the moving rod 45, and then move the connecting rod 32, so as to realize the movement of the moving tube 11; and a sealing sleeve 33 is fixedly connected to the interior of the fixed sleeve 18, and the sealing sleeve 33 is located between the fixed sleeve 18 and the moving tube 11, so as to ensure that the movement of the moving tube 11 will not affect the suction quality of the vacuum pump 3;

[0046] The printing bracket 8 is provided with a side hole 2 which is connected to the inside of the line slot column 1. The transmission mechanism includes a rack 22 fixedly connected to the end of the moving rod 45, a gear 23 meshing with the rack 22, a gear 21 fixedly connected to the same rotating shaft as the gear 23, a rack 20 meshing with the gear 21, a push-pull rod 9 fixedly connected to the rack 20, and a connecting rod 210 fixedly connected to the push-pull rod 9; the end of the connecting rod 210 away from the push-pull rod 9 is fixedly connected to the suction head 17, a supporting ear is fixedly connected to the side hole 2, the rotating shaft is rotatably connected to the side hole 2, the rack 22 is inserted into the side wall of the side hole 2 and is slidably connected to the printing bracket 8, the rack 20 is slidably connected to the bottom inner wall of the line slot column 1 and the rack 20 passes through the side wall of the line slot column 1; the gear 23 is located Between the push-pull rod 9 and the rack 22, the above-mentioned rotational connection method adopts the form of a bearing connection, so when the movable rod 45 moves downward, the rack 22 will move downward, thereby causing the rotation of the gear 23, and then the gear 21 will rotate and drive the rack 20 to slide, thereby driving the push-pull rod 9 to move outward, thereby pulling the connecting rod 2 10 to move, thereby realizing the movement of the suction head 17; wherein, the tooth top circle diameter size of the gear 23 is smaller than the tooth top circle diameter size of the gear 21, ensuring that when the fire sprinkler is moving downward and has not passed through the wire trough column 1, the suction head 17 has been staggered with the fire sprinkler, so when the fire sprinkler continues to move downward and passes through the wire trough column 1, the suction head 17 will not affect the movement of the fire sprinkler.

[0047] In other embodiments, the lower part of the movable pipe 11 is slidably connected with a conical air distribution plate 38 through an elastic mechanism. The conical air distribution plate 38 includes a top plate 35 provided with a plurality of through holes, a conical ring plate 36 fixedly connected to the bottom of the top plate 35, and a circular ring plate 37 fixedly connected to the bottom of the conical ring plate 36. The circular ring plate 37 is slidably connected to the inner wall of the movable pipe 11. A plurality of protrusions are provided at the bottom of the circular ring plate 37, and the protrusions are abutted against the end face of the movable pipe 11 under the action of the elastic mechanism. When the conical air distribution plate 38 moves downward under the action of air pressure, a flared air duct that expands outward is formed between the conical ring plate 36 and the inner wall of the movable pipe 11, thereby increasing the spraying range of carbon dioxide and improving the fire extinguishing effect of carbon dioxide;

[0048] A plurality of sliding grooves are circumferentially distributed on the lower part of the movable pipe 11, and an installation cavity 34 that communicates with the sliding grooves and is located inside the movable pipe 11. The elastic mechanism includes a sliding rod 39 fixedly connected to the top of the protrusion and slidably connected to the sliding groove, a positioning rod 42 fixedly connected to the inside of the installation cavity 34, a pressing plate 41 slidably connected to the positioning rod 42 and fixedly connected to the top of the sliding rod 39 through a third limiting platform, and a spring 44 sleeved on the outer circle of the positioning rod 42; the two ends of the spring 44 are respectively abutted against the bottom of the pressing plate 41 and the bottom of the installation cavity 34. A second notch 43 communicating with the inside of the installation cavity 34 is provided on the sliding groove, and the third limiting platform slides in the second notch 43; as the air pressure of carbon dioxide increases, the spring 44 will be compressed. At this time, the conical ring plate 36 will move downward, and the width of the flared air duct will become larger. As the air pressure of carbon dioxide decreases, the spring 44 will release pressure, so that the conical ring plate 36 moves upward. At this time, the width of the flared air duct will also become smaller; furthermore, it is beneficial to realize that under different initial pressures of carbon dioxide, the flow rate of carbon dioxide in the flared air duct can be stabilized within a range, and then ensure the consistency of the spraying range and spraying speed of carbon dioxide ejected from the flared air duct (the fluctuation is small and approximately the same), and then ensure that the speed of carbon dioxide sprayed onto the ignition point remains unchanged; for example, when the carbon dioxide fire extinguisher is used for a period of time, the pressure will decrease. At this time, the spring 44 releases pressure, and the conical ring plate 36 moves upward, so that the width of the flared air duct becomes smaller; furthermore, it can offset the amount of reduction in the carbon dioxide flow rate caused by the decrease in the pressure of the carbon dioxide fire extinguisher; thus, it is beneficial to improve the fire extinguishing quality of carbon dioxide; a chamfer 40 is provided at the top of the installation cavity 34 to reduce the energy loss caused by the movement of carbon dioxide in the pipe network.

[0049] In other embodiments, the pipe network includes a left air distribution pipe network connected to a number of fire sprinklers on the left and a right air distribution pipe network connected to a number of fire sprinklers on the right. The first collecting pipe of the left air distribution pipe network and the second collecting pipe of the right air distribution pipe network are connected to the main collecting pipe. The main collecting pipe is respectively connected to the air injection pipe of the fire extinguisher 4 and the air extraction pipe of the air extraction pump 3 through a tee joint. A first valve is provided on the air extraction pipe, a second valve is provided on the air injection pipe, a third valve is provided on the first collecting pipe, and a fourth valve is provided on the second collecting pipe; the first valve, the second valve, the third valve, the fourth valve, the fire extinguisher 4 and the air extraction pump 3 are all connected to the controller, dividing the fire sprinklers into two functional parts for convenient centralized heat dissipation; assuming that when a temperature sensor on the left reaches the secondary temperature during the heat dissipation process first (at the primary temperature, the fire sprinklers at both ends start simultaneously, and the primary temperature is less than the secondary temperature), at this time, the controller can control the first valve and the third valve to open, and the second valve and the fourth valve to close, so that the air intake will be concentrated on the left side, thereby achieving efficient heat dissipation on the left side; the same applies to the right side.

[0050] In the case of no fire or under normal circumstances, the service life of the air extraction pump 3 is much longer than that of the fire extinguisher 4. Therefore, during the operation of the entire device, the starting power of the air extraction pump 3 should be intelligently regulated. That is, in the initial stage after startup when the temperature rises slowly and less heat accumulates, the power of the air extraction pump 3 should be relatively low or it should be paused from starting; when more heat accumulates, a larger starting power is required; based on this, in other embodiments of the present invention, a temperature sensor is provided inside the printing bracket 8 near the printing roller 5 (the temperature at the rotation part of the printing roller 5 and near the printing roller 5 is generally relatively high), and this temperature sensor is connected to the controller; and the controller is pre-input with the standard power pt0 and the standard temperature T0 of the air extraction pump 3, and the controller calculates the working power pt of the air extraction pump 3 according to T0, pt0 and the actual temperature T fed back by the temperature sensor; where 0.2T0 ≤ T ≤ 6T0, x = T / T0, where 4T0 is the temperature when the fire extinguisher 4 starts. When T ≥ 4T0, the air extraction pump 3 stops and the fire extinguisher 4 starts;

[0051] When T ≤ 0.5T0, it means that the temperature at the rotation part of the printing roller 5 (or near the printing roller 5) is relatively low, and there is no need to start the air extraction pump 3 for heat dissipation. At this time, the value of x = T / T0 is less than 0.5, the value of and the value of

[0052] are both less than 0, and the controller instructs the air extraction pump 3 to stop running; the value of The value fluctuates within (0, 0.83pt0], that is, the controller commands the air extraction pump 3 to operate at low power;

[0053] When 0.95T0 < T ≤ 1.2T0, it represents that the temperature at the rotation of the printing roller 5 (or near the printing roller 5) is too high, and the air extraction pump 3 needs to be started at normal power for heat dissipation. At this time, 0.95 < x ≤ 1.2, The value fluctuates within (0.83, 1.23]; The value fluctuates within (0.83pt0, 1.23pt0], that is, the controller commands the air extraction pump 3 to operate at normal power;

[0054] When 1.2T0 < T ≤ 3.5T0, it represents that the temperature at the rotation of the printing roller 5 (or near the printing roller 5) is too high, and the air extraction pump 3 needs to be started at high power for heat dissipation. At this time, 1.2 < x ≤ 3.5, The value fluctuates within (1.23, 2]; The value fluctuates within (1.23pt0, 2pt0], that is, the controller commands the air extraction pump 3 to operate at high power;

[0055] When T ≥ 4T0, it represents that the temperature at the rotation of the printing roller 5 (or near the printing roller 5) is too high and has reached the activation temperature of the fire extinguisher 4. At this time, x ≥ 4, and the values of -8(x - 3)(x - 4) and pt0×[-8(x - 3)(x - 4)] are both less than 0. The controller commands the air extraction pump 3 to stop operating and controls the activation of the fire extinguisher 4;

[0056] Since in this embodiment, 4T0 is set as the activation temperature of the fire extinguisher 4, when the temperature reaches 4T0, it means that a fire has occurred. Therefore, in the temperature range of 3.5T0 < T ≤ 4T0, the temperature rises rapidly, and the power of the air extraction pump 3 at this time is not important; thus, in the above, the controller passes The command to control the air extraction pump 3 to switch between non - operation, low - power operation, normal - power operation, and high - power operation, thereby realizing the intelligent regulation of the air extraction pump 3; in addition, The control commands of and pt0×[-8(x - 3)(x - 4)] ensure that the power of the air extraction pump 3 changes gradually, eliminate the situation of power mutation, and improve the service life of the air extraction pump 3.

[0057] Working principle: When heat dissipation is required, the controller starts the air extraction pump 3. The hot gas will flow through the horn - shaped expansion pipe 14, the suction pipe 12, the first conical cavity 15, the filter element 28, the fire - proof nozzle, the pipe network, and the air extraction pump 3 in sequence and is discharged from the air extraction pump 3. During this process, dust and debris will be intercepted by the filter element 28, thereby preventing dust and debris from flowing into the main pipeline of the pipe network and preventing the main pipeline from being blocked; thus ensuring the normal use of the subsequent carbon dioxide fire extinguisher;

[0058] When it is necessary to clean the filter element 28, only need to start the telescopic cylinder 7, so that the first moving rod 45 moves downward. Subsequently, the first rack 22 will move downward, which will cause the rotation of the first gear 23. Then, the second gear 21 will rotate and drive the second rack 20 to slide, and then drive the push-pull rod 9 to move outward, thereby pulling the second connecting rod 10 to move, so as to realize the movement of the suction head 17 and the filter element 28. When the filter element 28 moves to the first notch 6, rotate the first limit platform 24 to turn the second limit platform 31 away from the limit groove 30, and then the filter element 28 can be taken out for cleaning;

[0059] When a fire occurs, the air extraction pump 3 stops and the telescopic cylinder 7 is started, so that the first moving rod 45 moves downward, and the first connecting rod 32 will move, thereby driving the movement of the moving pipe 11; during this process, the first rack 22 will move downward, which will cause the rotation of the first gear 23. Then, the second gear 21 will rotate and drive the second rack 20 to slide, and then drive the push-pull rod 9 to move outward, thereby pulling the second connecting rod 10 to move, so as to realize the movement of the suction head 17 and the filter element 28, and then realize the dislocation of the suction head 17 and the fire sprinkler; when the fire sprinkler passes through the wire groove column 1, the suction head 17 moves out of the side wall of the wire groove column 1, and then the fire extinguisher 4 is started, and carbon dioxide will be ejected from the fire sprinkler for fire extinguishing.

[0060] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. An intaglio printing device with a fire prevention function, comprising a plurality of color groups connected in sequence, wherein each color group includes a printing bracket (8) with a wire groove column (1) and a printing roller (5) arranged inside, and the printing roller (5) is located below the wire groove column (1), characterized in that, Inside the cable duct column (1), there are several fire sprinklers for heat dissipation or fire extinguishing. The fire sprinklers are respectively connected to a fire extinguisher (4) and an air extraction pump (3) through pipe networks. Under the action of a driving mechanism, the fire sprinklers can penetrate through the bottom of the cable duct column (1). A suction head (17) is slidably connected to the bottom of the cable duct column (1). The suction head (17) is connected to the driving mechanism through a transmission mechanism. Inside the suction head (17), there is a quick-release filter element (28). The transmission mechanism is used to convert the vertical movement of the fire sprinkler into the horizontal movement of the suction head (17); when the fire sprinkler penetrates through the cable duct column (1), the suction head (17) is misaligned with the fire sprinkler, and at the same time, the filter element (28) will move out of the side wall of the cable duct column (1). The pipe network includes a left equalizing pipe network connected to several fire sprinklers on the left and a right equalizing pipe network connected to several fire sprinklers on the right. The collecting pipe one of the left equalizing pipe network and the collecting pipe two of the right equalizing pipe network are connected to a main collecting pipe. The main collecting pipe is respectively connected to the air spraying pipe of the fire extinguisher (4) and the air extraction pipe of the air extraction pump (3) through a three-way joint. A valve one is provided on the air extraction pipe, a valve two is provided on the air spraying pipe, a valve three is provided on the collecting pipe one, and a valve four is provided on the collecting pipe two; the valve one, the valve two, the valve three, the valve four, the fire extinguisher (4) and the air extraction pump (3) are all connected to a controller. When a fire breaks out, the driving mechanism will drive the fire sprinkler to penetrate through the cable duct column (1) and at the same time make the suction head (17) misaligned with the fire sprinkler through the transmission mechanism; when the fire sprinkler penetrates through the cable duct column (1), the filter element (28) moves out of the side wall of the cable duct column (1), and then the fire extinguisher (4) is activated.

2. The gravure printing equipment with fire prevention function according to claim 1, characterized in that: The suction head (17) includes a moving plate (16) slidably connected to the cable duct column (1), a conical cavity one (15) fixed to the bottom of the moving plate (16), a dust collecting cavity (13) communicated with the bottom of the conical cavity one (15), a horn-shaped expansion pipe (14) fixed to the bottom of the dust collecting cavity (13), and an air suction pipe (12) for communicating the horn-shaped expansion pipe (14) with the conical cavity one (15); the moving plate (16) is connected to the driving mechanism through the transmission mechanism. The moving plate (16) is detachably connected to the filter element (28), and the main body of the filter element (28) is located inside the conical cavity one (15). The bottom of the filter element (28) is communicated with the conical cavity one (15) through filter holes. The inlet direction of the port of the air suction pipe (12) connected to the conical cavity one (15) is consistent with the tangent direction of the cross-section of the conical cavity one (15), and the conical cavity one (15) is wider at the top and narrower at the bottom.

3. The intaglio printing device with fire prevention function according to claim 2, wherein: A plurality of limiting grooves (30) are provided on the moving plate (16). The filter element (28) includes a second tapered cavity (27) embedded with filter cotton (26), a plurality of first limiting platforms (24) fixedly connected to the top of the second tapered cavity (27), and a first limiting ring (25) fixedly connected to the first limiting platforms (24). A plurality of the filter holes are provided at the bottom of the second tapered cavity (27). The bottom of the first limiting ring (25) abuts against the filter cotton (26). A second limiting platform (31) embedded inside the limiting groove (30) is provided on the first limiting platform (24).

4. The gravure printing equipment with fire prevention function according to claim 3, characterized in that: A plurality of first notches (6) aligned with the suction head (17) are provided on the side wall of the wire groove column (1). When the suction head (17) is misaligned with the fire sprinkler head and the fire sprinkler head moves to the limit, the filter element (28) is located at the first notch (6); the maximum diameter dimension of the filter element (28) is smaller than the width dimension of the first notch (6), and one end of the first notch (6) facing away from the filter element (28) is a closed end.

5. The gravure printing equipment with fire prevention function according to claim 1, characterized in that: A plurality of fixed sleeves (18) are fixedly connected inside the wire groove column (1). The fire sprinkler head includes a moving pipe (11) slidably connected to the fixed sleeve (18). The top of the moving pipe (11) is connected to the driving mechanism through a first connecting rod (32). The upper part of the moving pipe (11) is communicated with the pipe network. The driving mechanism includes a first moving rod (45) fixedly connected with a plurality of first connecting rods (32), and a telescopic cylinder (7) fixedly connected to the top of the wire groove column (1). The telescopic rod of the telescopic cylinder (7) penetrates through the side wall of the wire groove column (1) and is fixedly connected to the first moving rod (45). Both ends of the first moving rod (45) are respectively connected to the transmission mechanism.

6. The gravure printing equipment with fire prevention function according to claim 5, characterized in that: A side hole (2) communicating with the inside of the wire groove column (1) is provided on the printing support (8). The transmission mechanism includes a first rack (22) fixedly connected to the end of the first moving rod (45), a first gear (23) meshing with the first rack (22), a second gear (21) fixedly connected to the same rotating shaft as the first gear (23), a second rack (20) meshing with the second gear (21), a push-pull rod (9) fixedly connected to the second rack (20), and a second connecting rod (10) fixedly connected to the push-pull rod (9); one end of the second connecting rod (10) facing away from the push-pull rod (9) is fixedly connected to the suction head (17). A support ear is fixedly connected to the side hole (2). The rotating shaft is rotatably connected to the side hole (2). The first rack (22) is inserted into the side wall of the side hole (2) and is slidably connected to the printing support (8). The second rack (20) is slidably connected to the bottom inner wall of the wire groove column (1) and the second rack (20) penetrates through the side wall of the wire groove column (1); the first gear (23) is located between the push-pull rod (9) and the first rack (22).

7. The gravure printing equipment with fire prevention function according to claim 5, characterized in that: The lower part of the movable pipe (11) is slidably connected with a conical air distribution plate (38) through an elastic mechanism. The conical air distribution plate (38) includes a top plate (35) provided with a plurality of through holes, a conical ring plate (36) fixedly connected to the bottom of the top plate (35), and a circular ring plate (37) fixedly connected to the bottom of the conical ring plate (36). The circular ring plate (37) is slidably connected with the inner wall of the movable pipe (11). A plurality of protrusions are provided at the bottom of the circular ring plate (37), and the protrusions are in contact with the end face of the movable pipe (11) under the action of the elastic mechanism. When the conical air distribution plate (38) moves downward under the action of air pressure, a flared air duct expanding outward is formed between the conical ring plate (36) and the inner wall of the movable pipe (11).

8. The intaglio printing equipment with fire prevention function according to claim 7, characterized in that: A plurality of sliding grooves are circumferentially distributed at the lower part of the movable pipe (11), and an installation cavity (34) communicated with the sliding grooves and located inside the movable pipe (11) is provided. The elastic mechanism includes a sliding rod (39) fixedly connected to the top of the protrusion and slidably connected with the sliding groove, a positioning rod (42) fixedly connected to the inside of the installation cavity (34), a pressing plate (41) slidably connected with the positioning rod (42) and fixedly connected to the top of the sliding rod (39) through a third limiting platform, and a spring (44) sleeved on the outer circle of the positioning rod (42); both ends of the spring (44) are respectively in contact with the bottom of the pressing plate (41) and the bottom of the installation cavity (34). A second notch (43) communicating with the inside of the installation cavity (34) is provided on the sliding groove, and the third limiting platform slides in the second notch (43).

9. The gravure printing equipment with fire prevention function according to claim 1, characterized in that: A temperature sensor is provided inside the printing bracket (8) near the printing roller (5), and the temperature sensor is connected to the controller; the standard power pt0 and the standard temperature T0 of the air extraction pump (3) are pre-input into the controller, and the controller calculates the working power pt of the air extraction pump (3) according to T0, pt0 and the actual temperature T fed back by the temperature sensor. where, 0.2T0 ≤ T ≤ 6T0, x = T / T0.

Images