Ventilation and purification device for operation safety in limited space

Abstract

The invention discloses a ventilation and purification device for limited space operation safety, and relates to the technical field of operation ventilation, and the ventilation and purification device comprises a bottom plate, an air duct is arranged on the bottom plate, two supporting blocks are fixedly connected between the air duct and the bottom plate, and arc-shaped grooves are formed in the front side and the rear side of the air duct; the corrugated pipe is fixedly embedded in one side of the air duct, and the end of the corrugated pipe is fixedly connected with an air outlet pipe; and the number of the connecting blocks is two, the two connecting blocks are fixedly connected to the top and the bottom of the air duct correspondingly, annular rods are fixedly embedded in the two connecting blocks, and the annular rods are slidably sleeved with two moving blocks. The two atomizing nozzles swing continuously, the positions of the two atomizing nozzles are unstable when water mist is sprayed into air, and therefore the water mist is evenly dispersed in the air, and the air humidifying effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of operation ventilation, and particularly relates to a ventilation and purification device for limited space operation safety. Background Art

[0002] When operating in a limited space, in order to ensure fresh air, a ventilation and purification device needs to be used, so that the air inside the limited space can circulate with the outside air;

[0003] When the existing ventilation and purification device is in use, it is found that the effect of humidifying the air is poor. When spraying water mist into the air, the position of the nozzle is fixed, resulting in the water mist not being evenly dispersed in the air, and thus the effect of humidifying the air is not ideal. Therefore, improvement is needed;

[0004] Therefore, it is necessary to invent a ventilation and purification device for limited space operation safety. Summary of the Invention

[0005] Therefore, the present invention provides a ventilation and purification device for limited space operation safety to solve the problems in the background art.

[0006] In order to achieve the above object, the present invention provides the following technical solution: A ventilation and purification device for limited space operation safety, comprising:

[0007] A bottom plate, on which a wind cylinder is provided. Two support blocks are fixedly connected between the wind cylinder and the bottom plate. Arc-shaped grooves are formed on both the front and rear sides of the wind cylinder;

[0008] A corrugated pipe, which is fixedly embedded on one side of the wind cylinder. The end of the corrugated pipe is fixedly connected with an air outlet pipe;

[0009] Connecting blocks, which are two in number. The two connecting blocks are respectively fixedly connected to the top and bottom of the wind cylinder. Annular rods are fixedly embedded on the two connecting blocks. Two moving blocks are slidably sleeved on the annular rods. One side of each of the two moving blocks is fixedly connected with an atomizing nozzle. The two atomizing nozzles respectively penetrate through the two arc-shaped grooves. Flexible rubber sleeves are fixedly connected between the two atomizing nozzles and the wind cylinder;

[0010] Elastic sleeves, which are two in number. The two elastic sleeves are respectively fixedly connected to the front and rear sides of the wind cylinder. Hoses are fixedly connected between the two elastic sleeves and the two atomizing nozzles respectively. A water tank is fixedly connected to the bottom of the bottom plate. A pump body is fixedly connected inside the water tank. A tee pipe one is fixedly connected between the pump body and the two elastic sleeves;

[0011] An auxiliary component, which is used to make the two atomizing nozzles move in an arc and control the two atomizing nozzles to spray water intermittently;

[0012] An air inlet assembly for delivering fresh air into the air duct.

[0013] Preferably, the first three-way pipe penetrates through the bottom plate and the top of the water tank and is fixedly connected thereto. Both sides of the two elastic sleeves are fixedly connected with connecting blocks, and the four connecting blocks are fixedly connected with the air duct. The four connecting blocks are respectively fixedly sleeved outside the two hoses and the two branch pipes of the first three-way pipe. The liquid adding pipes are fixedly embedded in the top of the water tank and the bottom plate.

[0014] Preferably, the auxiliary assembly includes two arc-shaped rods which are fixedly connected between the two atomizing nozzles. A supporting block is fixedly connected to the top of the bottom plate, and the supporting block is located at the rear side of the air duct. A motor is fixedly connected to the top of the bottom plate, and a first reciprocating lead screw is fixedly connected to the output shaft of the motor. The first reciprocating lead screw penetrates through the supporting block, and a first sliding seat is sleeved outside the first reciprocating lead screw. The first sliding seat is connected to the first reciprocating lead screw through a ball screw pair. A first box body is fixedly connected to the top of the bottom plate. One side of the first box body is open. A first piston is slidably arranged inside the first box body. A U-shaped rod is fixedly connected between the first piston and the first sliding seat. A limiting rod is fixedly connected to the top of the bottom plate, and the limiting rod penetrates through the first sliding seat and is in sliding contact therewith. A first pipe is fixedly embedded in the other side of the first box body. Box bodies are fixedly connected to the top and the bottom of the air duct respectively. Second pistons are slidably arranged inside the two box bodies respectively. A second three-way pipe is fixedly connected between the two box bodies and the first box body, and a first switching valve is arranged on the second three-way pipe.

[0015] Preferably, the auxiliary assembly further includes a fixing block fixedly connected to the bottom of the air duct. The fixing block is located on one side of one of the box bodies. A first rotating shaft is embedded in the fixing block, and the first rotating shaft is hollow. A first gear is fixedly sleeved outside one end of the first rotating shaft. A first rack is arranged at the bottom of the first gear and meshed with the first gear. The first rack is arc-shaped and fixedly connected to one of the arc-shaped rods. A spiral groove is formed in the inner wall of the first rotating shaft, and a convex block is slidably arranged in the spiral groove. A first push rod is fixedly connected between the convex block and one of the second pistons. A first through groove is formed in one side of one of the box bodies, and the first push rod penetrates through the first through groove and is in sliding contact therewith.

[0016] Preferably, the auxiliary component further includes a groove which is formed in the top of the other second box body. A moving frame is slidably arranged in the groove. A second toothed plate is fixedly connected to the inner wall of the top of the moving block. A second gear which is meshed with the second toothed plate is arranged at the bottom of the second toothed plate. Swing components are arranged on both the front and rear sides of the second gear. One side of the moving frame is fixedly connected with a connecting rod. A second push rod is fixedly connected between the connecting rod and the other second piston. A second through groove is formed in one side of one of the second box bodies. The second push rod penetrates through the second through groove and is in sliding contact with the second through groove. The swing component includes an L-shaped plate which is fixedly connected to the front side of the other second box body. A second reciprocating lead screw is embedded in the L-shaped rod. The rear end of the second reciprocating lead screw is fixedly connected to the inside of the second gear.

[0017] Preferably, a second sliding seat is sleeved outside the second reciprocating lead screw. The second sliding seat is connected to the second reciprocating lead screw through a ball screw pair. A slider is fixedly connected to the top of the second sliding seat. A base block is fixedly connected to the front side of the air cylinder. A second rotating shaft is embedded in the two base blocks. A rotating rod is fixedly sleeved outside the second rotating shaft. A pressing block is fixedly connected to the rotating rod. Torsion springs are fixedly connected between the rotating rod and the two base blocks respectively. The two torsion springs are respectively sleeved outside the two second rotating shafts. A through groove is formed in the rotating rod. Through grooves are formed on both sides of the through groove. Convex rods are fixedly connected to both sides of the slider. The two convex rods respectively penetrate through the two through grooves and are in sliding contact with the two through grooves.

[0018] Preferably, the air inlet component includes a hollow cylinder which is fixedly embedded in the bottom plate. A first shell cover is fixedly connected to the top of the hollow cylinder. A second shell cover is fixedly connected to the bottom of the hollow cylinder. A solid cylinder is fixedly embedded in the first shell cover. The solid cylinder penetrates through the hollow cylinder and is fixedly connected to the second shell cover. An air supply pipe is fixedly connected between the second shell cover and the air cylinder. The air supply pipe penetrates through the bottom plate and is fixedly connected to the bottom plate. A second switch valve is arranged on the air supply pipe. An exhaust pipe is fixedly embedded in the second shell cover. A third switch valve is arranged on the exhaust pipe. An annular pipe is fixedly connected to the first shell cover. A plurality of air guide pipes are fixedly embedded in the annular pipe. The plurality of air guide pipes are all fixedly embedded in the first shell cover. A blower is arranged on the top of the first shell cover. A third three-way pipe is fixedly connected between the blower and the annular pipe.

[0019] Preferably, two third box bodies are fixedly embedded in the first shell cover. Third through grooves are formed in the bottoms of the two third box bodies. Pistons three are slidably arranged in the two third box bodies. A scraping rod is slidably arranged on the inner wall of the first shell cover. Moving rods are fixedly connected between the scraping rod and the two pistons three respectively. The two moving rods both penetrate through the third through grooves and are in sliding contact with the third through grooves. The two third box bodies are both fixedly connected to the blower. A second pipeline is fixedly connected between the two third box bodies. A third pipeline is fixedly connected between the second pipeline and the first pipeline. A fourth switch valve is arranged on the third pipeline.

[0020] Preferably, support legs are fixedly connected to the four corners of the bottom of the bottom plate.

[0021] Preferably, the first reciprocating lead screw is connected to the support block through a bearing, the first rotating shaft is connected to the fixed block through a bearing, the second reciprocating lead screw is connected to the L-shaped rod through a bearing, and the second rotating shaft is connected to the base block through a bearing.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. By designing the auxiliary component, when in use, the piston one, the push rod one and the convex block below continuously move left and right. Since the convex block is embedded in the spiral groove, the rotating shaft one and the gear one can continuously rotate back and forth, and then components such as the two arc-shaped rods and the two atomizing nozzles can continuously rotate back and forth. In this way, the two atomizing nozzles can continuously swing. When spraying water mist into the air, the positions of the two atomizing nozzles are erratic, so that the water mist is evenly dispersed in the air, thereby increasing the effect of air humidification.

[0024] 2. By designing the auxiliary component, when in use, components such as the piston one, the push rod two, and the moving frame above continuously move left and right, so that the two rotating rods can swing around the rotating shaft two. In this way, the two pressing blocks can continuously squeeze the elastic sleeve, so that the water can flow and stop flowing alternately, and then the two atomizing nozzles can spray water mist intermittently. In this way, when humidifying, the water mist can have time to be evenly dispersed in the air to avoid problems such as excessive local humidity or water droplet condensation that may be caused by continuous spraying, thereby more efficiently realizing air humidification. Description of the Drawings

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0026] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present invention can be implemented. Therefore, they do not have technical substance significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0027] Figure 1 It is the overall structure schematic diagram provided by the present invention;

[0028] Figure 2 Front view cross-sectional view provided by the present invention;

[0029] Figure 3 Provided by the present invention Figure 2 Enlarged view of portion A in

[0030] Figure 4 Stereogram of components such as the fan, box body three, and annular pipe provided by the present invention;

[0031] Figure 5 Provided by the present invention Figure 4 Exploded stereogram;

[0032] Figure 6 Stereogram of components such as the motor, pump body, rotating shaft one, and gear one provided by the present invention;

[0033] Figure 7 Provided by the present invention Figure 6 Rear view exploded stereogram;

[0034] Figure 8 Provided by the present invention Figure 7 Enlarged view of portion B in

[0035] Figure 9 Provided by the present invention Figure 7 Enlarged view of portion C in

[0036] In the figure: 1, bottom plate; 2, air duct; 3, support block; 4, bellows; 5, air outlet pipe; 6, connecting block; 7, annular rod; 8, moving block; 9, atomizing nozzle; 10, flexible rubber sleeve; 11, elastic sleeve; 12, hose; 13, water tank; 14, pump body; 15, tee pipe one; 16, connecting block; 17, liquid adding pipe; 18, arc rod; 19, support block; 20, motor; 21, reciprocating lead screw one; 22, sliding seat one; 23, box body one; 24, piston one; 25, U-shaped rod; 26, limiting rod; 27, pipe one; 28, box body two; 29, piston two; 30, tee pipe two; 31, switch valve one; 32, fixed block; 33, rotating shaft one; 34, gear one; 35, rack one; 36, spiral groove; 37, convex block; 38, push rod one; 39, moving frame; 40, rack two; 41, gear two; 42, connecting rod; 43, push rod two; 44, L-shaped plate; 45, reciprocating lead screw two; 46, sliding seat two; 47, slider; 48, base block; 49, rotating shaft two; 50, rotating rod; 51, pressing block; 52, torsion spring; 53, convex rod; 54, hollow cylinder; 55, shell cover one; 56, shell cover two; 57, solid cylinder; 58, air supply pipe; 59, switch valve two; 60, exhaust pipe; 61, switch valve three; 62, annular pipe; 63, air guide pipe; 64, fan; 65, tee pipe three; 66, box body three; 67, piston three; 68, scraping rod; 69, moving rod; 70, pipe two; 71, pipe three; 72, switch valve four; 73, support leg. Specific embodiments

[0037] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0038] Referring to the attached Figure 1 - attached Figure 9 , a ventilation and purification device for safety in confined space operations provided by the present invention includes:

[0039] A bottom plate 1, on which an air duct 2 is provided. Two support blocks 3 are fixedly connected between the air duct 2 and the bottom plate 1. Arc-shaped grooves are formed on both the front and rear sides of the air duct 2;

[0040] A bellows 4, which is fixedly embedded on one side of the air duct 2. The end of the bellows 4 is fixedly connected to an air outlet pipe 5;

[0041] Two connecting blocks 6, which are respectively fixedly connected to the top and bottom of the air duct 2. Two annular rods 7 are fixedly embedded on the two connecting blocks 6. Two moving blocks 8 are slidably sleeved on the annular rods 7. One side of each of the two moving blocks 8 is fixedly connected to an atomizing nozzle 9. The two atomizing nozzles 9 respectively penetrate through the two arc-shaped grooves. Flexible rubber sleeves 10 are fixedly connected between the two atomizing nozzles 9 and the air duct 2;

[0042] Elastic sleeves 11, there are two of them, and the two elastic sleeves 11 are respectively fixedly connected to the front and rear sides of the air duct 2. Hoses 12 are fixedly connected between the two elastic sleeves 11 and the two atomizing nozzles 9 respectively. A water tank 13 is fixedly connected to the bottom of the bottom plate 1, and a pump body 14 is fixedly connected inside the water tank 13. A first tee pipe 15 is fixedly connected between the pump body 14 and the two elastic sleeves 11;

[0043] An auxiliary component, which is used to make the two atomizing nozzles 9 move in an arc and control the intermittent water spraying of the two atomizing nozzles 9;

[0044] An air inlet component, which is used to convey fresh air into the air duct 2;

[0045] The auxiliary component includes two arc-shaped rods 18, both of the two arc-shaped rods 18 are fixedly connected between the two atomizing nozzles 9. A support block 19 is fixedly connected to the top of the bottom plate 1, and the support block 19 is located at the rear side of the air cylinder 2. A motor 20 is fixedly connected to the top of the bottom plate 1, and a reciprocating lead screw one 21 is fixedly connected to the output shaft of the motor 20. The reciprocating lead screw one 21 penetrates through the support block 19, and a sliding seat one 22 is sleeved outside the reciprocating lead screw one 21. The sliding seat one 22 is connected to the reciprocating lead screw one 21 through a ball screw pair. A box body one 23 is fixedly connected to the top of the bottom plate 1. One side of the box body one 23 is open. A piston one 24 is slidably arranged inside the box body one 23. A U-shaped rod 25 is fixedly connected between the piston one 24 and the sliding seat one 22. A limiting rod 26 is fixedly connected to the top of the bottom plate 1. The limiting rod 26 penetrates through the sliding seat one 22 and is in sliding contact with it. A pipe one 27 is fixedly embedded on the other side of the box body one 23. Box bodies two 28 are fixedly connected to both the top and the bottom of the air cylinder 2. Pistons two 29 are slidably arranged inside the two box bodies two 28. A tee pipe two 30 is fixedly connected between the two box bodies two 28 and the box body one 23. A switch valve one 31 is arranged on the tee pipe two 30. The auxiliary component further includes a fixed block 32 fixedly connected to the bottom of the air cylinder 2. The fixed block 32 is located on one side of one of the box bodies two 28. A rotating shaft one 33 is embedded on the fixed block 32. The rotating shaft one 33 is hollow. A gear one 34 is fixedly sleeved outside one end of the rotating shaft one 33. A rack one 35 meshingly connected with the gear one 34 is arranged at the bottom of the gear one 34. The rack one 35 is arc-shaped. The rack one 35 is fixedly connected to one of the arc-shaped rods 18. A spiral groove 36 is formed in the inner wall of the rotating shaft one 33. A convex block 37 is slidably arranged in the spiral groove 36. A push rod one 38 is fixedly connected between the convex block 37 and one of the pistons two 29. A through groove one is formed on one side of one of the box bodies two 28. The push rod one 38 penetrates through the through groove one and is in sliding contact with it. The auxiliary component further includes a groove. The groove is formed on the top of the other box body two 28. A moving frame 39 is slidably arranged in the groove. A rack two 40 is fixedly connected to the inner wall of the top of the moving block 8. A gear two 41 meshingly connected with the rack two 40 is arranged at the bottom of the rack two 40. Swing components are arranged on both the front and the back sides of the gear two 41. A connecting rod 42 is fixedly connected to one side of the moving frame 39. A push rod two 43 is fixedly connected between the connecting rod 42 and the other piston two 29. A through groove two is formed on one side of one of the box bodies two 28. The push rod two 43 penetrates through the through groove two and is in sliding contact with it. The swing component includes an L-shaped plate 44. The L-shaped plate 44 is fixedly connected to the front side of the other box body two 28. A reciprocating lead screw two 45 is embedded on the L-shaped rod. The rear end of the reciprocating lead screw two 45 is fixedly connected to the inside of the gear two 41. A sliding seat two 46 is sleeved outside the reciprocating lead screw two 45. The sliding seat two 46 is connected to the reciprocating lead screw two 45 through a ball screw pair. A slider 47 is fixedly connected to the top of the sliding seat two 46. A base block 48 is fixedly connected to the front side of the air cylinder 2. Rotating shafts two 49 are embedded on the two base blocks 48. A rotating rod 50 is fixedly sleeved outside the rotating shafts two 49. A pressing block 51 is fixedly connected to the rotating rod 50.A torsion spring 52 is fixedly connected between the rotating rod 50 and each of the two base blocks 48. The two torsion springs 52 are respectively sleeved outside the two second rotating shafts 49. A through groove is formed in the rotating rod 50. Through grooves are formed on both sides of the through groove. Convex rods 53 are fixedly connected to both sides of the slider 47. The two convex rods 53 respectively penetrate through the two through grooves and are in sliding contact with them.

[0046] In this implementation scheme, an auxiliary component is designed. When in use, the lower piston 24, the first push rod 38 and the convex block 37 move left and right continuously. Since the convex block 37 is embedded in the spiral groove 36, the first rotating shaft 33 and the first gear 34 can be rotated back and forth continuously, and then components such as the two arc-shaped rods 18 and the two atomizing nozzles 9 can be rotated back and forth continuously. In this way, the two atomizing nozzles 9 can swing continuously. When spraying water mist into the air, the positions of the two atomizing nozzles 9 are erratic, so that the water mist can be evenly dispersed in the air.

[0047] Among them, in order to achieve the purpose of electrostatic dust removal, the present device adopts the following technical scheme: The air inlet component includes a hollow cylinder 54. The hollow cylinder 54 is fixedly embedded in the bottom plate 1. A first shell cover 55 is fixedly connected to the top of the hollow cylinder 54. A second shell cover 56 is fixedly connected to the bottom of the hollow cylinder 54. A solid cylinder 57 is fixedly embedded in the first shell cover 55. The solid cylinder 57 penetrates through the hollow cylinder 54 and is fixedly connected to the second shell cover 56. An air supply pipe 58 is fixedly connected between the second shell cover 56 and the air duct 2. The air supply pipe 58 penetrates through the bottom plate 1 and is fixedly connected to it. A second switch valve 59 is provided on the air supply pipe 58. An exhaust pipe 60 is fixedly embedded in the second shell cover 56. A third switch valve 61 is provided on the exhaust pipe 60. An annular pipe 62 is fixedly connected to the first shell cover 55. A plurality of air guide pipes 63 are fixedly embedded in the annular pipe 62. The plurality of air guide pipes 63 are all fixedly embedded in the first shell cover 55. A fan 64 is provided on the top of the first shell cover 55. A three-way pipe 65 is fixedly connected between the fan 64 and the annular pipe 62. Two third boxes 66 are fixedly embedded in the first shell cover 55. Through grooves 3 are formed at the bottoms of the two third boxes 66. Piston 67 is slidably arranged inside the two third boxes 66. A scraping rod 68 is slidably arranged on the inner wall of the first shell cover 55. A moving rod 69 is fixedly connected between the scraping rod 68 and each of the two pistons 67. The two moving rods 69 respectively penetrate through the through groove 3 and are in sliding contact with it. The two third boxes 66 are both fixedly connected to the fan 64. A second pipe 70 is fixedly connected between the two third boxes 66. A third pipe 71 is fixedly connected between the second pipe 70 and the first pipe 27. A fourth switch valve 72 is provided on the third pipe 71. The design of the air inlet component can also perform electrostatic dust removal while sending air, so that the air entering the confined space will not contain impurities.

[0048] Among them, in order to achieve the purpose of support, the present device adopts the following technical scheme: Support legs 73 are fixedly connected to the four corners of the bottom of the bottom plate 1. The support legs 73 can support the device.

[0049] Among them, in order to achieve the purpose of reducing wear, the present device adopts the following technical solutions: The reciprocating lead screw 21 is connected to the support block 19 through a bearing, the rotating shaft 33 is connected to the fixed block 32 through a bearing, the reciprocating lead screw 45 is connected to the L-shaped rod through a bearing, and the rotating shaft 49 is connected to the base block 48 through a bearing. Connecting through bearings can reduce wear.

[0050] The use process of the present invention is as follows: When using the present invention, an air inlet is opened on the wall of a limited space, and then the air outlet pipe 5 of the present device is placed on the wall, and then the gap is filled with sealant;

[0051] When ventilating, open the switch valve 59 and close the switch valve 61. Then control the fan 64 to work. Then, under the action of the three-way pipe 65, the annular pipe 62, and the multiple air guide pipes 63, air can enter the inside of the hollow cylinder 54. Subsequently, it enters the air cylinder 2 through the air supply pipe 58, and finally enters the limited space through the corrugated pipe 4 and the air outlet pipe 5. In this way, ventilation and purification of the air inside the limited space can be achieved;

[0052] Among them, when ventilating and purifying, the hollow cylinder 54 is charged with positive electricity and the solid cylinder 57 is charged with negative electricity. In this way, when the air passes through the inside of the hollow cylinder 54, the impurities in the air can be charged with negative electricity and then deposited on the inner wall of the hollow cylinder 54. In this way, electrostatic dust removal can be achieved, and the air entering the limited space will not contain impurities;

[0053] Among them, when ventilating and purifying, the pump body 14 can also work. Then the water in the water tank 13 can enter the two atomizing nozzles 9 through the three-way pipe 15, the two elastic sleeves 11, and the two hoses 12. In this way, water mist can be sprayed into the air cylinder 2, and in this way, humidification of the air can be achieved. When humidifying, open the switch valve 31 and close the switch valve 72. Then control the motor 20 to work. The motor 20 drives the reciprocating lead screw 21 to rotate. The reciprocating lead screw 21 drives the sliding seat 22, the U-shaped rod 25, and the piston 24 to continuously move left and right. Then, under the action of the three-way pipe 30, the air in the second box 28 can flow back and forth with the air in the two first boxes 23. In this way, the piston 24 below and the piston 24 above can continuously move left and right;

[0054] When the lower piston 1 24 moves left and right, the push rod 1 38 and the lug 37 can move left and right. Since the lug 37 is embedded in the spiral groove 36, the rotating shaft 1 33 and the gear 1 34 can rotate back and forth continuously, and then components such as the two arc-shaped rods 18 and the two atomizing nozzles 9 can rotate back and forth continuously. In this way, the two atomizing nozzles 9 can swing continuously. When spraying water mist into the air, the positions of the two atomizing nozzles 9 are erratic, so that the water mist can be evenly dispersed in the air, thereby increasing the effect of air humidification;

[0055] When the upper piston 1 24 moves left and right, the push rod 2 43, the connecting rod 42, the moving frame 39 and the rack 2 40 can move left and right continuously. In this way, the gear 2 41 can rotate forward several circles and then reverse several circles. When the gear 2 41 rotates, the two reciprocating lead screws 2 45 can also rotate. The rotation of the two reciprocating lead screws 2 45 drives the two sliding seats 2 46 to move back and forth continuously, and then the sliders 47 and the convex rods 53 on them move back and forth. Since the convex rod 53 penetrates the through groove, when moving back and forth, the two rotating rods 50 can swing with the two rotating shafts 2 49 as the rotation axes. In this way, the two pressing blocks 51 can continuously squeeze the elastic sleeve 11, so that the water can flow through the elastic sleeve 11 for a while and not flow through for a while. Furthermore, the two atomizing nozzles 9 can spray water mist intermittently. In this way, when humidifying, the water mist can have time to be evenly dispersed in the air to avoid problems such as excessive local humidity or water droplet condensation caused by continuous spraying, so as to more efficiently realize air humidification;

[0056] After the ventilation and purification work is completed, the on-off valve 1 31 is closed and the on-off valve 4 72 is opened. When the motor 20 works, the air in the box body 1 23 and the two box bodies 3 66 can flow back and forth, and then the piston 3 67, the moving rod 69 and the scraping rod 68 move up and down continuously. In this way, the impurities on the inner wall of the hollow cylinder 54 can be scraped off. At the same time, the on-off valve 2 59 is closed and the on-off valve 3 61 is opened. Then, when the blower 64 is controlled to work, the air can be discharged from the discharge pipe, and the impurities are blown out together, so that the impurities can be cleaned.

[0057] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the above-described technical solutions or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present invention falls within the scope of protection required by the present invention.

Claims

1. A ventilation and purification device for safety in confined space operations, characterized in that, Including: A bottom plate (1), on which a wind tube (2) is provided. Two support blocks (3) are fixedly connected between the wind tube (2) and the bottom plate (1). Arc-shaped grooves are formed on both the front and rear sides of the wind tube (2); A corrugated pipe (4), which is fixedly embedded on one side of the wind tube (2). The end of the corrugated pipe (4) is fixedly connected to an air outlet pipe (5); Connecting blocks (6), which are provided in two. The two connecting blocks (6) are respectively fixedly connected to the top and bottom of the wind tube (2). Annular rods (7) are fixedly embedded on the two connecting blocks (6). Two moving blocks (8) are slidably sleeved on the annular rods (7). One side of each of the two moving blocks (8) is fixedly connected to an atomizing nozzle (9). The two atomizing nozzles (9) respectively penetrate through the two arc-shaped grooves. Flexible rubber sleeves (10) are fixedly connected between the two atomizing nozzles (9) and the wind tube (2); Elastic sleeves (11), which are provided in two. The two elastic sleeves (11) are respectively fixedly connected to the front and rear sides of the wind tube (2). Hoses (12) are fixedly connected between the two elastic sleeves (11) and the two atomizing nozzles (9). A water tank (13) is fixedly connected to the bottom of the bottom plate (1). A pump body (14) is fixedly connected inside the water tank (13). A tee pipe one (15) is fixedly connected between the pump body (14) and the two elastic sleeves (11); An auxiliary component, which is used to make the two atomizing nozzles (9) move in an arc and control the two atomizing nozzles (9) to spray water intermittently; An air inlet component, which is used to convey fresh air into the wind tube (2).

2. The ventilation and purification device for confined space operation safety according to claim 1, characterized in that: The tee pipe one (15) penetrates through the bottom plate (1) and the top of the water tank (13) and is fixedly connected thereto. Connecting blocks (16) are fixedly connected to both sides of the two elastic sleeves (11). The four connecting blocks (16) are all fixedly connected to the wind tube (2). The four connecting blocks (16) are respectively fixedly sleeved on the two hoses (12) and the two branch pipes of the tee pipe one (15). A liquid adding pipe (17) is fixedly embedded on the top of the water tank (13) and the bottom plate (1).

3. The ventilation and purification device for confined space operation safety according to claim 1, characterized in that: The auxiliary component includes two arc-shaped rods (18), and both of the two arc-shaped rods (18) are fixedly connected between the two atomizing nozzles (9). A support block (19) is fixedly connected to the top of the bottom plate (1), and the support block (19) is located at the rear side of the air duct (2). A motor (20) is fixedly connected to the top of the bottom plate (1), and a reciprocating lead screw one (21) is fixedly connected to the output shaft of the motor (20). The reciprocating lead screw one (21) penetrates through the support block (19), and a sliding seat one (22) is sleeved outside the reciprocating lead screw one (21). The sliding seat one (22) is connected to the reciprocating lead screw one (21) through a ball screw pair. A box body one (23) is fixedly connected to the top of the bottom plate (1). One side of the box body one (23) is open. A piston one (24) is slidably arranged inside the box body one (23). A U-shaped rod (25) is fixedly connected between the piston one (24) and the sliding seat one (22). A limiting rod (26) is fixedly connected to the top of the bottom plate (1). The limiting rod (26) penetrates through the sliding seat one (22) and is in sliding contact with it. A pipe one (27) is fixedly embedded in the other side of the box body one (23). Box bodies two (28) are fixedly connected to the top and bottom of the air duct (2) respectively. Pistons two (29) are slidably arranged inside the two box bodies two (28). A three-way pipe two (30) is fixedly connected between the two box bodies two (28) and the box body one (23). A switch valve one (31) is arranged on the three-way pipe two (30).

4. A ventilation and purification device for safety in confined space operations according to claim 3, characterized in that: The auxiliary component further includes a fixed block (32) fixedly connected to the bottom of the air duct (2). The fixed block (32) is located on one side of one of the box bodies two (28). A rotating shaft one (33) is embedded in the fixed block (32). The rotating shaft one (33) is hollow. A gear one (34) is fixedly sleeved outside one end of the rotating shaft one (33). A rack one (35) meshing with the gear one (34) is arranged at the bottom of the gear one (34). The rack one (35) is arc-shaped. The rack one (35) is fixedly connected to one of the arc-shaped rods (18). A spiral groove (36) is formed in the inner wall of the rotating shaft one (33). A convex block (37) is slidably arranged in the spiral groove (36). A push rod one (38) is fixedly connected between the convex block (37) and one of the pistons two (29). A through groove one is formed in one side of one of the box bodies two (28). The push rod one (38) penetrates through the through groove one and is in sliding contact with it.

5. The ventilation and purification device for safety in confined space operations according to claim 4, characterized in that: The auxiliary component further includes a groove which is opened at the top of the other second box body (28). A moving frame (39) is slidably arranged in the groove. A second toothed plate (40) is fixedly connected to the inner wall of the top of the moving block (8). A second gear (41) which is meshed with the second toothed plate (40) is arranged at the bottom of the second toothed plate (40). Swing components are arranged on both the front and rear sides of the second gear (41). A connecting rod (42) is fixedly connected to one side of the moving frame (39). A second push rod (43) is fixedly connected between the connecting rod (42) and the other second piston (29). A second through groove is opened on one side of one of the second box bodies (28). The second push rod (43) penetrates through the second through groove and is in sliding contact with the second through groove. The swing component includes an L-shaped plate (44) which is fixedly connected to the front side of the other second box body (28). A second reciprocating lead screw (45) is embedded on the L-shaped rod. The rear end of the second reciprocating lead screw (45) is fixedly connected to the inside of the second gear (41).

6. The ventilation and purification device for confined space operation safety according to claim 5, characterized in that: A second sliding seat (46) is sleeved outside the second reciprocating lead screw (45). The second sliding seat (46) is connected to the second reciprocating lead screw (45) through a ball screw pair. A slider (47) is fixedly connected to the top of the second sliding seat (46). A base block (48) is fixedly connected to the front side of the air cylinder (2). A second rotating shaft (49) is embedded on the two base blocks (48). A rotating rod (50) is fixedly sleeved outside the second rotating shaft (49). A pressing block (51) is fixedly connected to the rotating rod (50). Torsion springs (52) are fixedly connected between the rotating rod (50) and the two base blocks (48). The two torsion springs (52) are respectively sleeved outside the two second rotating shafts (49). A through groove is opened on the rotating rod (50). Through grooves are opened on both sides of the through groove. Convex rods (53) are fixedly connected to both sides of the slider (47). The two convex rods (53) respectively penetrate through the two through grooves and are in sliding contact with the two through grooves.

7. The ventilation and purification device for confined space operation safety according to claim 1, wherein: The air intake assembly includes a hollow cylinder (54), which is fixedly embedded in the bottom plate (1). A first shell cover (55) is fixedly connected to the top of the hollow cylinder (54), and a second shell cover (56) is fixedly connected to the bottom of the hollow cylinder (54). A solid cylinder (57) is fixedly embedded in the first shell cover (55), and the solid cylinder (57) penetrates through the hollow cylinder (54) and is fixedly connected to the second shell cover (56). A air supply pipe (58) is fixedly connected between the second shell cover (56) and the air duct (2), and the air supply pipe (58) penetrates through the bottom plate (1) and is fixedly connected thereto. A second switch valve (59) is provided on the air supply pipe (58). An exhaust pipe (60) is fixedly embedded in the second shell cover (56), and a third switch valve (61) is provided on the exhaust pipe (60). An annular pipe (62) is fixedly connected to the first shell cover (55), and a plurality of air guide pipes (63) are fixedly embedded in the annular pipe (62). The plurality of air guide pipes (63) are all fixedly embedded in the first shell cover (55). A blower (64) is provided on the top of the first shell cover (55), and a three-way pipe three (65) is fixedly connected between the blower (64) and the annular pipe (62).

8. The ventilation and purification device for confined space operation safety according to claim 7, characterized in that: Two third boxes (66) are fixedly embedded in the first shell cover (55). Through slots three are opened at the bottoms of the two third boxes (66). Piston three (67) are slidably arranged inside the two third boxes (66). A scraping rod (68) is slidably arranged on the inner wall of the first shell cover (55). Moving rods (69) are fixedly connected between the scraping rod (68) and the two piston three (67). The two moving rods (69) penetrate through the through slots three and are in sliding contact therewith. The two third boxes (66) are both fixedly connected to the blower (64). A second pipe (70) is fixedly connected between the two third boxes (66). A third pipe (71) is fixedly connected between the second pipe (70) and the first pipe (27). A fourth switch valve (72) is provided on the third pipe (71).

9. The ventilation and purification device for confined space operation safety according to claim 1, wherein: Support legs (73) are fixedly connected to the four corners of the bottom of the bottom plate (1).

10. The ventilation and purification device for confined space operation safety according to claim 6, characterized in that: The first reciprocating lead screw (21) is connected to the support block (19) through a bearing, the first rotating shaft (33) is connected to the fixed block (32) through a bearing, the second reciprocating lead screw (45) is connected to the L-shaped rod through a bearing, and the second rotating shaft (49) is connected to the base block (48) through a bearing.

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