CN118217787A - Hydrogen sulfide tunnel construction air purification device - Google Patents

Abstract

The invention relates to the technical field of hydrogen sulfide separation, and discloses an air purification device for hydrogen sulfide tunnel construction. This hydrogen sulfide tunnel construction air purification device, hydrogen sulfide gas gets into first liquid reserve tank earlier, the sodium hydroxide solution of first liquid reserve tank can once absorb hydrogen sulfide gas, afterwards, hydrogen sulfide gas gets into the second liquid reserve tank, the sodium hydroxide solution of second liquid reserve tank can the secondary absorb hydrogen sulfide gas for purifying effect is more thorough, afterwards the activated carbon piece can do last absorption purification treatment to hydrogen sulfide gas, afterwards can be to the position of two butt joint pipelines, make hydrogen sulfide gas can get into the second liquid reserve tank in the reentrant first liquid reserve tank first, the trend of switching hydrogen sulfide gas can make sodium hydroxide solution of first liquid reserve tank and sodium hydroxide solution of second liquid reserve tank can obtain make full use of.

Description

A hydrogen sulfide tunnel construction air purification device

Technical Field

The invention relates to the technical field of hydrogen sulfide separation, in particular to an air purification device for hydrogen sulfide tunnel construction.

Background technique

During the tunnel construction process, hydrogen sulfide gas will be continuously emitted from the surrounding rock of the face, which may cause incidents such as poisoning or combustion. Considering the safety issues, air purification equipment can be used to purify the gas in the tunnel and separate hydrogen sulfide from the air.

Existing air purification devices generally use sodium hydroxide solution to absorb hydrogen sulfide gas or use activated carbon to adsorb hydrogen sulfide gas to achieve the purification effect, but the overall purification effect is not sufficient and thorough, and sodium hydroxide solution resources are difficult to be fully utilized. In view of the above problems, it is necessary to improve the existing equipment.

Summary of the invention

The object of the present invention is to provide an air purification device for hydrogen sulfide tunnel construction to solve the problem that the existing air purification devices proposed in the above background technology generally use sodium hydroxide solution to absorb hydrogen sulfide gas or use activated carbon to adsorb hydrogen sulfide gas to achieve the purification effect, but the overall purification effect is not sufficient and thorough, and the sodium hydroxide solution resources are difficult to be fully utilized.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air purification device for hydrogen sulfide tunnel construction, comprising a mobile base, a first liquid storage tank and a second liquid storage tank are fixed on one side of the upper end surface of the mobile base, a sodium hydroxide solution pipeline is fixed between the front side of the first liquid storage tank and the front side of the second liquid storage tank, an air intake channel is fixed on one side of the upper end surface of the mobile base, a filter is fixed in the air intake channel, and collection boxes are symmetrically penetrated on both sides of the air intake channel, an air pump is fixed at the bottom of the air intake channel, a first connecting hose is fixed at the bottom of the air pump, a first fixed pipeline is fixed at the bottom of the first liquid storage tank, a second fixed pipeline is fixed at the top of the first liquid storage tank, the second fixed pipeline is connected with the first fixed pipeline, a third fixed pipeline is fixed at the bottom of the second liquid storage tank, a first communicating pipeline is fixed between the first fixed pipeline and the third fixed pipeline, a second communicating pipeline is fixed between the bottom of the first liquid storage tank and the bottom of the second liquid storage tank, the second communicating pipeline is fixed at the bottom of the first communicating pipeline, and a fourth fixed pipeline is fixed at the top of the second liquid storage tank, and the fourth fixed pipeline is connected with the third fixed pipeline.

A carrying box is fixed on the other side of the upper end surface of the movable base, a second connecting hose is fixed on the top of the carrying box, an activated carbon block penetrates one side of the carrying box, a bracket is fixed on the top of the first connecting pipe, and a swap and impurity cleaning mechanism is fixed on the bracket.

Preferably, guide baffles are fixed on both inner walls of the first liquid storage tank and both inner walls of the second liquid storage tank, and the guide baffles are staggered one above the other.

Preferably, the swap and impurity cleaning mechanism includes a motor, and the motor is fixed on an inner wall of the bracket, the top of the motor is connected to the first circular gear, and one side of the first circular gear is meshingly connected to the second circular gear, a rotating plate is fixed to the top of the second circular gear, and docking pipes are symmetrically fixed at both ends of the rotating plate, and one of the docking pipes is fixed to the end of the first connecting hose, and the other docking pipe is fixed to the head end of the second connecting hose.

Preferably, a rotating shaft is fixed to the top of the rotating plate, and the rotating shaft passes through the bottom of the suction channel and is connected to the scraper.

Preferably, the bottom of the second circular gear is connected to the first bevel gear through a connecting shaft, and the rear side of the first bevel gear is meshedly connected with the second bevel gear, the rear side of the second bevel gear is fixed with a third circular gear, and one side of the third circular gear is meshedly connected with the first tooth plate, and the other side of the third circular gear is meshedly connected with the second tooth plate.

Preferably, two sleeves are fixed on the top of the first liquid storage tank and the second liquid storage tank, and the first tooth plate passes through one of the sleeves and is connected to the first movable frame, the first baffle is fixed on the top of the first movable frame, and the second baffle is fixed on the bottom of the first movable frame.

Preferably, the second tooth plate passes through another sleeve and is connected to the second movable frame, a third baffle is fixed on the top of the second movable frame, and a fourth baffle is fixed on the bottom of the first movable frame.

Preferably, a driving sprocket is fixed on the front side of the second bevel gear, the front sides of the first fixed pipe and the third fixed pipe are both rotatably connected to driven sprockets, the outer sides of the driving sprocket and the two driven sprockets are meshed and connected with a chain, fixed valves are symmetrically fixed at both ends of the first connecting pipe, and rotary valves are fixed to the rear sides of the two driven sprockets, and the rotary valves are rotatably connected to the bottom of the fixed valves.

Preferably, a compression spring is fixed to the bottom of the rotary valve, and a clamping strip is fixed to the bottom of the compression spring, wherein one of the clamping strips on the rotary valve is clamped and connected to the inner bottom of the first fixed pipe, and the clamping strip on the other rotary valve is clamped and connected to the inner bottom of the first connecting pipe.

Compared with the prior art, the present invention has the following beneficial effects:

1. The air purification device for hydrogen sulfide tunnel construction can achieve the purpose of full and thorough purification. The first liquid storage tank and the second liquid storage tank are both used to store sodium hydroxide solution, which can be used to absorb hydrogen sulfide gas. When inhaling through the air intake channel, the hydrogen sulfide gas first enters the first liquid storage tank, and the sodium hydroxide solution in the first liquid storage tank can absorb the hydrogen sulfide gas once, and then the hydrogen sulfide gas enters the second liquid storage tank, and the sodium hydroxide solution in the second liquid storage tank can absorb the hydrogen sulfide gas twice, so that the purification effect is more thorough. Subsequently, the activated carbon block can perform the final adsorption and purification treatment on the hydrogen sulfide gas, and then the positions of the two docking pipes can be swapped so that the hydrogen sulfide gas can first enter the second liquid storage tank and then enter the first liquid storage tank. Switching the direction of the hydrogen sulfide gas can make the sodium hydroxide solution in the first liquid storage tank and the sodium hydroxide solution in the second liquid storage tank fully utilized.

2. The air purification device for hydrogen sulfide tunnel construction can achieve the purpose of filtering and removing impurities. When air is inhaled through the air intake channel, the filter can separate and block impurities. While swapping the positions of the two docking pipes, the scraper rotates to automatically clean up the impurities on the filter. The collection box plays a role in receiving and collecting impurities.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a rear perspective structural schematic diagram of the present invention;

FIG2 is a schematic diagram of a front three-dimensional structure of the present invention;

FIG3 is a schematic diagram of a front cross-sectional structure of the present invention;

FIG4 is a schematic diagram of a top view of the structure of the present invention;

FIG5 is a schematic front view of the three-dimensional structure of the swapping and impurity cleaning mechanism of the present invention;

FIG6 is a rear perspective structural diagram of the swapping and impurity cleaning mechanism of the present invention;

FIG7 is an enlarged structural schematic diagram of point A in FIG1 of the present invention;

Figure 8 is an enlarged schematic diagram of the structure of Figure 3 B of the present invention;

FIG9 is an enlarged schematic diagram of the structure at C in FIG5 of the present invention;

FIG10 is a schematic diagram of the enlarged structure of point D in FIG6 of the present invention;

FIG11 is a schematic diagram of the structure of the filter screen, the collection box and the scraper of the present invention;

FIG12 is a schematic diagram of a first fixed pipeline structure of the present invention;

FIG. 13 is a schematic diagram of the connection structure of the driving sprocket, chain, driven sprocket, fixed valve, rotary valve and clamping bar of the present invention.

In the figure: 1, mobile base; 2, first liquid storage tank; 3, second liquid storage tank; 4, guide baffle; 5, sodium hydroxide solution pipeline; 6, air intake channel; 7, filter; 8, collection box; 9, air pump; 10, first connecting hose; 11, first fixed pipeline; 12, second fixed pipeline; 13, third fixed pipeline; 14, first connecting pipeline; 15, second connecting pipeline; 16, fourth fixed pipeline; 17, second connecting hose; 18, carrying box; 19, activated carbon block; 20, bracket; 21, swap and impurity cleaning mechanism; 2101, motor; 2102, first circular gear; 2103, second circular gear; 2104, rotating plate; 2105, docking pipe; 2106, rotating shaft; 2107, scraper; 2108, connecting shaft; 2109, first bevel gear; 2110, second bevel gear; 2111, third circular gear; 2112, first tooth plate; 2113, second tooth plate; 2114, sleeve; 2115, first moving frame; 2116, first baffle; 2117, second baffle; 2118, second moving frame; 2119, third baffle; 2120, fourth baffle; 2121, driving sprocket; 2122, chain; 2123, driven sprocket; 2124, fixed valve; 2125, rotary valve; 2126, compression spring; 2127, clamping strip.

Detailed ways

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

Please refer to Figures 1 to 13. The present invention provides a technical solution: an air purification device for hydrogen sulfide tunnel construction, comprising a mobile base 1, a first liquid storage tank 2 and a second liquid storage tank 3 are fixed to one side of the upper end surface of the mobile base 1, a sodium hydroxide solution pipeline 5 is fixed between the front side of the first liquid storage tank 2 and the front side of the second liquid storage tank 3, an air intake channel 6 is fixed to one side of the upper end surface of the mobile base 1, a filter screen 7 is fixed in the air intake channel 6, a collection box 8 is symmetrically penetrated on both sides of the air intake channel 6, an air pump 9 is fixed to the bottom of the air pump 9, a first connecting hose 10 is fixed to the bottom of the first liquid storage tank 2, and a filter screen 7 is fixed in the air intake channel 6. The two sides of the air intake channel 6 are symmetrically penetrated by the collecting box 8, an air pump 9 is fixed to the bottom of the air pump 9, and a first connecting hose 10 is fixed to the bottom of the first liquid storage tank 2. A first fixed pipe 11 is fixed, a second fixed pipe 12 is fixed on the top of the first liquid storage tank 2, the second fixed pipe 12 is connected to the first fixed pipe 11, a third fixed pipe 13 is fixed on the bottom of the second liquid storage tank 3, a first communicating pipe 14 is fixed between the first fixed pipe 11 and the third fixed pipe 13, a second communicating pipe 15 is fixed between the bottom of the first liquid storage tank 2 and the bottom of the second liquid storage tank 3, the second communicating pipe 15 is fixed to the bottom of the first communicating pipe 14, a fourth fixed pipe 16 is fixed on the top of the second liquid storage tank 3, the fourth fixed pipe 16 is connected to the third fixed pipe 13.

A carrying box 18 is fixed to the other side of the upper end surface of the mobile base 1, a second connecting hose 17 is fixed to the top of the carrying box 18, an activated carbon block 19 penetrates one side of the carrying box 18, a bracket 20 is fixed to the top of the first connecting pipe 14, and a swap and impurity cleaning mechanism 21 is fixed on the bracket 20.

In this embodiment, guide baffles 4 are fixed on both inner walls of the first liquid storage tank 2 and both inner walls of the second liquid storage tank 3, and the guide baffles 4 are staggered up and down. The guide baffles 4 guide the hydrogen sulfide gas so that the hydrogen sulfide gas can flow upward in a winding manner, so that the hydrogen sulfide gas can fully contact with the sodium hydroxide solution, so as to fully purify the hydrogen sulfide gas.

In this embodiment, the swap and impurity cleaning mechanism 21 includes a motor 2101, and the motor 2101 is fixed on an inner wall of the bracket 20, the top of the motor 2101 is connected to the first circular gear 2102, and one side of the first circular gear 2102 is meshedly connected to the second circular gear 2103, and a rotating plate 2104 is fixed to the top of the second circular gear 2103, and docking pipes 2105 are symmetrically fixed at both ends of the rotating plate 2104, and one of the docking pipes 2105 is fixed at the end of the first connecting hose 10, and the other docking pipe 2105 is fixed at the head end of the second connecting hose 17. The first circular gear 2102 can rotate under the action of the motor 2101, thereby driving the second circular gear 2103 to rotate, thereby driving the rotating plate 2104 to rotate 180 degrees, which is convenient for swapping the positions of the two docking pipes 2105, thereby changing the direction of the hydrogen sulfide gas.

In this embodiment, a rotating shaft 2106 is fixed to the top of the rotating plate 2104, and the rotating shaft 2106 passes through the bottom of the air intake channel 6 and is connected to the scraper 2107. The rotation of the rotating plate 2104 can drive the rotating shaft 2106 and the scraper 2107 to rotate, and the scraper 2107 can scrape off impurities on the filter 7.

The third circular gear 2111 is fixed to the rear side of the second bevel gear 2110, and one side of the third circular gear 2111 is meshed with the first tooth plate 2112, and the other side of the third circular gear 2111 is meshed with the second tooth plate 2113. The rotation of the second circular gear 2103 can drive the connecting shaft 2108 and the first bevel gear 2109 to rotate, thereby driving the second bevel gear 2110 to rotate, and the third circular gear 2111 rotates accordingly, thereby driving the first tooth plate 2112 and the second tooth plate 2113 to move, and the moving direction of the first tooth plate 2112 is opposite to that of the second tooth plate 2113, so as to facilitate the adjustment of the positions of the first baffle plate 2116, the second baffle plate 2117, the third baffle plate 2119 and the fourth baffle plate 2120.

In this embodiment, two sleeves 2114 are fixed on the top of the first liquid storage tank 2 and the second liquid storage tank 3, and the first tooth plate 2112 passes through one of the sleeves 2114 and is connected to the first movable frame 2115, a first baffle 2116 is fixed on the top of the first movable frame 2115, and a second baffle 2117 is fixed on the bottom of the first movable frame 2115, one of the sleeves 2114 plays a limiting role in the process of the first tooth plate 2112 being raised and lowered, and the first movable frame 2115 can be raised and lowered together with the first tooth plate 2112, so as to facilitate the overall adjustment of the positions of the first baffle 2116 and the second baffle 2117.

In this embodiment, the second tooth plate 2113 passes through another sleeve 2114 and is connected to the second movable frame 2118. A third baffle 2119 is fixed to the top of the second movable frame 2118, and a fourth baffle 2120 is fixed to the bottom of the first movable frame 2115. Another sleeve 2114 plays a limiting role in the process of the second tooth plate 2113 being raised and lowered. The second movable frame 2118 can be raised and lowered together with the second tooth plate 2113, which is convenient for overall adjustment of the positions of the third baffle 2119 and the fourth baffle 2120.

In this embodiment, a driving sprocket 2121 is fixed to the front side of the second bevel gear 2110, the front sides of the first fixed pipe 11 and the third fixed pipe 13 are both rotatably connected to the driven sprocket 2123, the outer sides of the driving sprocket 2121 and the two driven sprockets 2123 are meshed and connected with a chain 2122, fixed valves 2124 are symmetrically fixed to both ends of the first connecting pipe 14, and rotary valves 2125 are fixed to the rear sides of the two driven sprockets 2123, and the rotary valves 2125 are rotatably connected to the bottom of the fixed valves 2124, and the second bevel gear 21 10 The rotation drives the active sprocket 2121 to rotate, and the two driven sprockets 2123 can rotate under the driving action of the chain 2122, thereby driving the two rotary valves 2125 to rotate at the same time, which is convenient for changing the direction of the hydrogen sulfide gas. When the two rotary valves 2125 turn right as a whole, the left end of the first connecting pipe 14 is closed, and the hydrogen sulfide gas first flows through the second liquid storage tank 3 and then flows through the first liquid storage tank 2. When the two rotary valves 2125 turn left as a whole, the right end of the first connecting pipe 14 is closed, and the hydrogen sulfide gas first flows through the first liquid storage tank 2 and then flows through the second liquid storage tank 3.

In this embodiment, a compression spring 2126 is fixed to the bottom of the rotary valve 2125, and a clamping strip 2127 is fixed to the bottom of the compression spring 2126. The clamping strip 2127 on one of the rotary valves 2125 is clamped and connected to the inner bottom of the first fixed pipe 11, and the clamping strip 2127 on the other rotary valve 2125 is clamped and connected to the inner bottom of the first connecting pipe 14. The first fixed pipe 11, the third fixed pipe 13 and the first connecting pipe 14 are all provided with clamping grooves. After the rotary valve 2125 is rotated to the bottom, the clamping strip 2127 will automatically pop into the corresponding clamping groove under the action of the compression spring 2126, so as to facilitate the fixing.

The use method and advantages of the present invention: The working process of the hydrogen sulfide tunnel construction air purification device is as follows:

As shown in Figures 1 to 13: first, the sodium hydroxide solution is passed into the first liquid storage tank 2 and the second liquid storage tank 3, the mobile base 1 can move in the tunnel, the air pump 9 is started, the air suction channel 6 draws out the hydrogen sulfide gas in the tunnel, the filter screen 7 filters the hydrogen sulfide gas, thereby separating and blocking the impurities in the hydrogen sulfide gas, the hydrogen sulfide gas enters the first liquid storage tank 2 along the first connecting hose 10 and the first fixed pipe 11, the sodium hydroxide solution can absorb the hydrogen sulfide gas, the hydrogen sulfide gas flows upward in a winding manner and is discharged from the first liquid storage tank 2 through the second fixed pipe 12, and then the hydrogen sulfide gas enters the second liquid storage tank 3 along the first connecting pipe 14 and the second connecting pipe 15, and the hydrogen sulfide gas in the second liquid storage tank 3 The sodium solution performs secondary absorption treatment on the hydrogen sulfide gas, and the hydrogen sulfide gas meanders upward and is discharged from the second liquid storage tank 3 through the fourth fixed pipe 16, and then the hydrogen sulfide gas enters the carrying box 18 along the second connecting hose 17, and the activated carbon block 19 adsorbs the hydrogen sulfide gas, thereby achieving multiple purification effects. After a period of time, the hydrogen sulfide gas in the first liquid storage tank 2 is close to saturation. At this time, the first circular gear 2102 rotates, thereby driving the second circular gear 2103 to rotate, and the rotating plate 2104 rotates 180 degrees to swap the positions of the two docking pipes 2105, thereby connecting the first connecting hose 10 with the third fixed pipe 13, and at the same time connecting the second connecting hose 17 with the first fixed pipe 11. The rotating shaft 2106 and the scraper 2107 rotate to scrape off the impurities on the filter screen 7, and the impurities finally fall into the collecting box 8. The connecting shaft 2108 and the first bevel gear 2109 rotate, the second bevel gear 2110 and the third circular gear 2111 rotate, and the first tooth plate 2112 moves down while the second tooth plate 2113 moves up. The first movable frame 2115, the first baffle 2116 and the second baffle 2117 move down as a whole, the first baffle 2116 enters the first fixed pipe 11, and the second baffle 2117 leaves the second connecting pipe 15. The second movable frame 2118, the third baffle 2119 and the fourth baffle 2120 move up as a whole, the third baffle 2119 leaves the third fixed pipe 13, and the fourth baffle 2120 moves up as a whole. The plate 2120 enters the second communicating pipe 15, and the driving sprocket 2121, the chain 2122 and the two driven sprockets 2123 operate as a whole, thereby driving the two rotary valves 2125 to rotate, thereby changing the direction of the hydrogen sulfide gas. After that, the hydrogen sulfide gas first enters the second liquid storage tank 3 and then enters the first liquid storage tank 2, so that the sodium hydroxide solution in the first liquid storage tank 2 and the sodium hydroxide solution in the second liquid storage tank 3 can be fully utilized. The absorption time of the first liquid storage tank 2 and the time to replace the sodium hydroxide liquid can be roughly determined with the help of an external hydrogen sulfide concentration sensor. When the hydrogen sulfide gas in the first liquid storage tank 2 and the hydrogen sulfide gas in the second liquid storage tank 3 are close to saturation, the sodium hydroxide solution can be replaced as a whole.

In summary, the hydrogen sulfide tunnel construction air purification device achieves the purpose of fully and thoroughly purifying and filtering impurities, and meets people's usage needs.

The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

The directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "sodium hydroxide solution flat", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An air purification device for hydrogen sulfide tunnel construction, comprising a mobile base (1), characterized in that: a first liquid storage tank (2) and a second liquid storage tank (3) are fixed to one side of the upper end surface of the mobile base (1), a sodium hydroxide solution pipeline (5) is fixed between the front side of the first liquid storage tank (2) and the front side of the second liquid storage tank (3), an air intake channel (6) is fixed to one side of the upper end surface of the mobile base (1), a filter screen (7) is fixed in the air intake channel (6), a collection box (8) is symmetrically passed through both sides of the air intake channel (6), an air pump (9) is fixed to the bottom of the air intake channel (6), a first connecting hose (10) is fixed to the bottom of the air pump (9), and a first fixed pipeline is fixed to the bottom of the first liquid storage tank (2). (11), a second fixed pipe (12) is fixed on the top of the first liquid storage tank (2), the second fixed pipe (12) and the first fixed pipe (11) are connected, a third fixed pipe (13) is fixed on the bottom of the second liquid storage tank (3), a first communicating pipe (14) is fixed between the first fixed pipe (11) and the third fixed pipe (13), a second communicating pipe (15) is fixed between the bottom of the first liquid storage tank (2) and the bottom of the second liquid storage tank (3), the second communicating pipe (15) is fixed to the bottom of the first communicating pipe (14), a fourth fixed pipe (16) is fixed on the top of the second liquid storage tank (3), the fourth fixed pipe (16) and the third fixed pipe (13) are connected; A carrying box (18) is fixed to the other side of the upper end surface of the movable base (1), a second connecting hose (17) is fixed to the top of the carrying box (18), an activated carbon block (19) penetrates one side of the carrying box (18), a bracket (20) is fixed to the top of the first connecting pipe (14), and a swapping and impurity cleaning mechanism (21) is fixed to the bracket (20). 2. An air purification device for hydrogen sulfide tunnel construction according to claim 1, characterized in that: guide baffles (4) are fixed on both inner walls of the first liquid storage tank (2) and both inner walls of the second liquid storage tank (3), and the guide baffles (4) are staggered one above and one below. 3. An air purification device for construction of a hydrogen sulfide tunnel according to claim 1, characterized in that: the exchange and impurity cleaning mechanism (21) comprises a motor (2101), and the motor (2101) is fixed on an inner wall of the bracket (20), the top of the motor (2101) is connected to the first circular gear (2102), and one side of the first circular gear (2102) is meshedly connected to the second circular gear (2103), a rotating plate (2104) is fixed to the top of the second circular gear (2103), and docking pipes (2105) are symmetrically fixed at both ends of the rotating plate (2104), and one of the docking pipes (2105) is fixed to the end of the first connecting hose (10), and the other docking pipe (2105) is fixed to the head end of the second connecting hose (17). 4. An air purification device for hydrogen sulfide tunnel construction according to claim 3, characterized in that a rotating shaft (2106) is fixed on the top of the rotating plate (2104), and the rotating shaft (2106) passes through the bottom of the air intake channel (6) and is connected to the scraper (2107). 5. The air purification device for construction of a hydrogen sulfide tunnel according to claim 3, characterized in that: the bottom of the second circular gear (2103) is connected to the first bevel gear (2109) through a connecting shaft (2108), and the rear side of the first bevel gear (2109) is meshedly connected with the second bevel gear (2110), the rear side of the second bevel gear (2110) is fixed with a third circular gear (2111), and one side of the third circular gear (2111) is meshedly connected with the first toothed plate (2112), and the other side of the third circular gear (2111) is meshedly connected with the second toothed plate (2113). 6. A hydrogen sulfide tunnel construction air purification device according to claim 5, characterized in that: two sleeves (2114) are fixed on the top of the first liquid storage tank (2) and the second liquid storage tank (3), and the first tooth plate (2112) passes through one of the sleeves (2114) and is connected to the first movable frame (2115), a first baffle (2116) is fixed on the top of the first movable frame (2115), and a second baffle (2117) is fixed on the bottom of the first movable frame (2115). 7. An air purification device for hydrogen sulfide tunnel construction according to claim 6, characterized in that: the second tooth plate (2113) passes through another sleeve (2114) and is connected to the second movable frame (2118), a third baffle (2119) is fixed to the top of the second movable frame (2118), and a fourth baffle (2120) is fixed to the bottom of the first movable frame (2115). 8. An air purification device for construction of a hydrogen sulfide tunnel according to claim 5, characterized in that: a driving sprocket (2121) is fixed to the front side of the second bevel gear (2110), the front side of the first fixed pipe (11) and the front side of the third fixed pipe (13) are both rotatably connected to a driven sprocket (2123), the outer sides of the driving sprocket (2121) and the two driven sprockets (2123) are meshed and connected with a chain (2122), fixed valves (2124) are symmetrically fixed to both ends of the first connecting pipe (14), and rotary valves (2125) are fixed to the rear sides of the two driven sprockets (2123), and the rotary valves (2125) are rotatably connected to the bottom of the fixed valves (2124). 9. An air purification device for construction of a hydrogen sulfide tunnel according to claim 8, characterized in that: a compression spring (2126) is fixed to the bottom of the rotary valve (2125), and a clamping strip (2127) is fixed to the bottom of the compression spring (2126), wherein one of the clamping strips (2127) on the rotary valve (2125) is clamped and connected to the inner bottom of the first fixed pipe (11), and the other clamping strip (2127) on the rotary valve (2125) is clamped and connected to the inner bottom of the first connecting pipe (14).