Fresh air guarantee device for underground artificial chamber

Abstract

The invention provides a fresh air guarantee device for an underground artificial chamber, and mainly relates to the technical field of underground engineering. A fresh air guarantee device for an underground artificial chamber comprises a shell, a treatment box is fixedly arranged at the bottom of the inner wall of the shell, a ventilation cavity is fixedly formed in the top of the treatment box, an air inlet pipe is fixedly arranged on the right side of the shell, an air outlet pipe is fixedly arranged on the left side of the ventilation cavity, an exhaust pipe is fixedly arranged on the right side of the treatment box, and a connecting pipe is fixedly arranged on the left side of the treatment box; a rotating shaft is rotationally arranged in the treatment box, an activated carbon filter screen is arranged on the rotating shaft, a driving motor is fixedly arranged on the side face of the treatment box and is in transmission connection with the rotating shaft, an impurity removal box is fixedly arranged at the bottom of the inner wall of the shell and communicates with a connecting pipe and an air inlet pipe, and an air suction pipe is fixedly arranged at the top of the impurity removal box. The device has a total heat exchange mode and an internal circulation filtering mode, automatic switching can be achieved according to the external environment and the quality of air in the chamber, and the cleaning capacity is improved through the dual effects of physical dust removal and chemical absorption.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of underground engineering, and specifically, it is a fresh air guarantee device for underground artificial chambers. Background Art

[0002] As a special enclosed space, the ventilation system of underground artificial chambers is directly related to personnel safety, equipment operation, and environmental comfort. Due to the low efficiency of air exchange between underground chambers and the outside world, the following problems are likely to occur: Pollutant accumulation: Harmful components such as construction dust, mechanical exhaust gases (such as CO, NOx), and gas (CH4) are likely to accumulate in the chambers; Poor adaptability to bad weather: In extreme weather such as external sandstorms, high-concentration dust, and harmful gas leakage, if traditional ventilation devices directly introduce external air, it may exacerbate the pollution in the chambers, while simply closing the ventilation system will lead to a decrease in oxygen content. Existing underground ventilation devices have the following technical defects: The mode switching is single. Traditional devices only have a single mode of "fresh air introduction" or "mechanical exhaust", lacking the internal circulation filtration function in bad weather, and unable to achieve self-purification of chamber air when the external air quality does not meet the standards; Maintenance work such as filter screen cleaning and solution replacement of existing equipment requires manual intervention, and the degree of automation is low. Summary of the Invention

[0003] To achieve the above object, the present invention is realized through the following technical solutions: A fresh air guarantee device for underground artificial chambers, including a housing. At the bottom of the inner wall of the housing, a treatment box is fixedly arranged. At the top of the treatment box, a ventilation cavity is fixedly arranged. On the right side of the housing, an air inlet pipe is fixedly arranged. On the left side of the ventilation cavity, an air outlet pipe is fixedly arranged. On the right side of the treatment box, an exhaust pipe is fixedly arranged and on the left side, a connecting pipe is fixedly arranged. Inside the treatment box, a rotating shaft is rotatably arranged. On the rotating shaft, activated carbon filter meshes are fixedly arranged in an array. On the side of the treatment box, a driving motor is fixedly arranged. The driving motor is in transmission connection with the rotating shaft. Inside the treatment box, a filter cavity and a solution cavity are arranged up and down. At the bottom of the inner wall of the housing, a impurity removal box is fixedly arranged. The other end of the connecting pipe is communicated with the impurity removal box. The other end of the air inlet pipe is communicated with the impurity removal box. At the top of the impurity removal box, an air suction pipe is fixedly arranged. Butterfly switches are fixedly arranged on both the air inlet pipe and the exhaust pipe.

[0004] A through slot is opened near the right side at the top of the treatment box and is communicated with the ventilation cavity. On the inner wall of the ventilation cavity, spiral blocks are fixedly arranged in an array. The treatment box is arranged in a cylindrical shape, and the ventilation cavity is arranged in an arc shape.

[0005] The filter cavity and the solution cavity are directly separated by a partition board. The rotating shaft passes through the partition board and is rotatably connected. The exhaust pipe and the connecting pipe are communicated with the filter cavity. The solution cavity is filled with a removal liquid. On the right side of the solution cavity, a liquid inlet pipe and a liquid discharge pipe are fixedly arranged.

[0006] The interior of the impurity removal box is partitioned into a first cleaning bin, a second cleaning bin, and a sewage bin. Spiral plates, filter nets, and spray pipes are fixedly arranged inside both the first cleaning bin and the second cleaning bin. The air suction pipe is communicated with the top of the second cleaning bin, the air inlet pipe is communicated with the first cleaning bin, a tee pipe is fixedly arranged on the side of the impurity removal box near the bottom, one end of the tee pipe is connected to a connecting pipe, and the other two ends are communicated with the first cleaning bin and the second cleaning bin.

[0007] The sewage bin is arranged at the bottom of the inner wall of the impurity removal box. Through holes are arrayed at the bottoms of both the first cleaning bin and the second cleaning bin and are communicated with the sewage bin. Drain pipes are symmetrically and fixedly arranged on the impurity removal box near the top position and are communicated with the sewage bin. Water inlet pipes are symmetrically and fixedly arranged on the impurity removal box near the top position. The water inlet pipes are communicated with the corresponding spray pipes. The spray pipes are arranged in a circular ring shape and are fixedly arranged near the top position of the inner wall of the impurity removal box. Nozzles are arrayed and fixedly arranged at the bottom of the spray pipes.

[0008] The filter net is arranged in a cross shape, and round holes are arrayed on the spiral plate.

[0009] The butterfly switch includes a first baffle and a second baffle arranged in a semicircular shape. The first baffle is sleeved on the second baffle and is hinged, and the end face abuts against the inner wall of the pipeline. A support frame is fixedly arranged at the top of the pipeline. A connecting block is slidably arranged on the inner wall of the support frame. An electric push rod is fixedly arranged inside the support frame. The electric push rod is in transmission connection with the connecting block to drive the first baffle and the second baffle to rotate to complete the opening and closing of the pipeline.

[0010] Sliders are symmetrically and fixedly arranged on both sides of the connecting block. Chute grooves are arranged on the inner wall of the support frame. The sliders slide along the chute grooves. Card slots are symmetrically arranged on the inner wall of the connecting block. Protrusions are fixedly arranged at the tops of both the first baffle and the second baffle. The protrusions abut against the corresponding card slots.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is simple, which is convenient for installation and use. The device has a dual mode of total heat exchange and internal circulation filtration, and can automatically switch according to the external environment and the air quality in the chamber. Under normal weather conditions, the total heat exchange mode realizes efficient fresh air replacement; when encountering bad weather, it automatically switches to the internal circulation mode to stably control the CO₂ concentration within a safe range, avoiding the problem of poor environmental adaptability caused by the single mode of traditional devices. The present device adopts a multi-stage purification system. Through the dual effects of physical dust removal and chemical absorption, the pollutant treatment ability is significantly improved. The rotary activated carbon filter net and the removal liquid work together to simultaneously remove harmful gases such as formaldehyde and hydrogen sulfide, and at the same time improve the filtering effect and service life of the activated carbon filter net. Description of the Drawings

[0012] Appendix Figure 1 is a schematic cross-sectional structure diagram of the present invention; Appendix Figure 2 is a schematic diagram of the first disassembled structure of the present invention; Appendix Figure 3 is a schematic diagram of the second disassembled structure of the present invention; Appendix Figure 4 is a schematic diagram of the third disassembled structure of the present invention; Appendix Figure 5 is a schematic diagram of the fourth disassembled structure of the present invention; Appendix Figure 6 is a schematic cross-sectional structure diagram of the impurity removal box of the present invention; Appendix Figure 7 is a schematic diagram of the spiral plate and filter screen structure of the present invention; Appendix Figure 8 is a schematic diagram of the butterfly switch structure of the present invention.

[0013] Reference numerals shown in the drawings: 1, housing; 2, processing box; 201, filtration chamber; 202, solution chamber; 203, liquid inlet pipe; 204, liquid discharge pipe; 3, ventilation chamber; 4, air inlet pipe; 5, air outlet pipe; 6, exhaust air pipe; 7, connecting pipe; 8, activated carbon filter screen; 9, drive motor; 10, impurity removal box; 1001, first cleaning bin; 1002, second cleaning bin; 1003, sewage bin; 1004, spiral plate; 1005, filter screen; 1006, spray pipe; 1007, water inlet pipe; 1008, sewage discharge pipe; 11, butterfly switch; 1101, first baffle; 1102, second baffle; 1103, support frame; 1104, connecting block; 1105, electric push rod; 12, air suction pipe; 13, tee pipe. Detailed implementation manners

[0014] In combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by this application.

[0015] Combined with the attached drawings, a fresh air guarantee device for an underground artificial chamber includes a housing 1. At the bottom of the inner wall of the housing 1, a treatment box 2 is fixedly arranged. At the top of the treatment box 2, a ventilation chamber 3 is fixedly arranged. On the right side of the housing 1, an air inlet pipe 4 is fixedly arranged. The air inlet pipe 4 is connected to an external air supply device to transport external air into the interior. On the left side of the ventilation chamber 3, an air outlet pipe 5 is fixedly arranged. The treated air is transported into the chamber through the air outlet pipe 5. On the right side of the treatment box 2, an exhaust pipe 6 is fixedly arranged and on the left side, a connecting pipe 7 is fixedly arranged. Inside the treatment box 2, a rotating shaft is rotatably arranged. Activated carbon filters 8 are fixedly arranged in an array on the rotating shaft. On the side of the treatment box 2, a driving motor 9 is fixedly arranged. The driving motor 9 is in transmission connection with the rotating shaft. Inside the treatment box 2, a filtering chamber 201 and a solution chamber 202 are arranged up and down. At the bottom of the inner wall of the housing 1, a impurity removal box 10 is fixedly arranged. The other end of the connecting pipe 7 is communicated with the impurity removal box 10. The other end of the air inlet pipe 4 is communicated with the impurity removal box 10. At the top of the impurity removal box 10, an air suction pipe 12 is fixedly arranged. The air suction pipe 12 is connected to an external exhaust fan to suck the air in the chamber into the impurity removal box 10. Butterfly switches 11 are fixedly arranged on both the air inlet pipe 4 and the exhaust pipe 6. A through slot is opened near the right side at the top of the treatment box 2 and is communicated with the ventilation chamber 3. Spiral blocks are fixedly arranged in an array on the inner wall of the ventilation chamber 3. Through this structural design, the air generates spiral flow to optimize the air flow distribution. The treatment box 2 is arranged in a cylindrical shape and the ventilation chamber 3 is arranged in an arc shape.

[0016] The filtering chamber 201 and the solution chamber 202 are directly separated by a partition board. The rotating shaft passes through the partition board and is rotatably connected. The exhaust pipe 6 and the connecting pipe 7 are communicated with the filtering chamber 201. The solution chamber 202 is filled with a removal liquid. The removal liquid includes but is not limited to gas removal liquid. On the right side of the solution chamber 202, a liquid inlet pipe 203 and a liquid discharge pipe 204 are fixedly arranged. After the activated carbon filter 8 is used for a period of time, the driving motor 9 drives the rotating shaft to rotate 180°, so that the upper half of the activated carbon filter 8 enters the solution chamber 202 and contacts the removal liquid in the solution chamber 202 to clean the activated carbon filter 8. Through this structural design, it is beneficial to improve the filtering effect and service life.

[0017] The interior of the impurity removal box 10 is divided into a first cleaning chamber 1001, a second cleaning chamber 1002, and a sewage chamber 1003. Spiral plates 1004, filter meshes 1005, and spray pipes 1006 are fixedly arranged inside both the first cleaning chamber 1001 and the second cleaning chamber 1002. The air suction pipe 12 is communicated with the top of the second cleaning chamber 1002. The air inlet pipe 4 is communicated with the first cleaning chamber 1001. A tee pipe 13 is fixedly arranged near the bottom on the side of the impurity removal box 10. One end of the tee pipe 13 is connected to the connecting pipe 7 and the other two ends are communicated with the first cleaning chamber 1001 and the second cleaning chamber 1002.

[0018] The sewage tank 1003 is arranged at the bottom of the inner wall of the impurity removal box 10. The first cleaning tank 1001 and the second cleaning tank 1002 are both provided with through holes in an array at the bottom to be connected with the sewage tank 1003. A sewage discharge pipe 1008 is symmetrically fixed near the top of the impurity removal box 10 and is connected with the sewage tank 1003. The sewage is discharged through this structural design. A water inlet pipe 1007 is symmetrically fixed near the top of the impurity removal box 10. The water inlet pipe 1007 is connected with an external water tank to pump clean water into the first cleaning tank 1001 and the second cleaning tank 1002. In the cleaning chamber 1002, the water inlet pipe 1007 is connected to the corresponding spray pipe 1006. The spray pipe 1006 is arranged in a circular ring shape and is fixedly arranged near the top of the inner wall of the impurity removal box 10. A nozzle is fixedly arranged in an array at the bottom of the spray pipe 1006. Through this structural arrangement, the clean water source is atomized to clean the spiral plate 1004 and the filter screen 1005. After the filter screens 1005 in the first cleaning chamber 1001 and the second cleaning chamber 1002 have been used for a period of time, they are connected to an external water source for cleaning to ensure the filtering effect.

[0019] The filter 1005 is arranged in a cross shape. This structural design can increase the interception and interception amount of dust by the filter 1005. The spiral plate 1004 is provided with an array of circular holes. This structural design facilitates the flow of flushed sewage into the sewage tank 1003. The filter 1005 is provided with fine fluff. This structural design can intercept dust in the air.

[0020] The butterfly switch 11 includes a first baffle 1101 and a second baffle 1102 arranged in a semicircular shape. The first baffle 1101 is sleeved on the second baffle 1102 and is hingedly connected, and its end face abuts against the inner wall of the pipeline. A support frame 1103 is fixedly arranged on the top of the pipeline, and a connecting block 1104 is slidably arranged on the inner wall of the support frame 1103. An electric push rod 1105 is fixedly arranged inside the support frame 1103. The electric push rod 1105 is transmission-connected with the connecting block 1104 to drive the first baffle 1101 and the second baffle 1102 to rotate to complete the opening and closing of the pipeline.

[0021] Slide blocks are symmetrically fixed on both sides of the connecting block 1104, and a sliding groove is provided on the inner wall of the supporting frame 1103. The slide blocks slide along the sliding groove. The inner wall of the connecting block 1104 is symmetrically provided with a card slot. The first baffle plate 1101 and the second baffle plate 1102 are fixed with protrusions on the top, and the protrusions abut against the corresponding card slots. The connecting block 1104 is driven to move reciprocatingly horizontally through the electric push rod 1105, and then the first baffle plate 1101 and the second baffle plate 1102 are driven to rotate symmetrically, thereby completing the opening and closing of the pipeline.

[0022] This solution also includes an environmental detection device and a controller. The environmental detection device (including PM2.5, CO, and gas concentration sensors) is used to detect the air quality of the external environment. Automatic mode switching is achieved through the PLC control system. When the external air comprehensive index (AQI) is ≤100, the full heat exchange mode is operated by default, and the butterfly switch of the inlet / exhaust duct remains open; when AQI>100 or the gas concentration in the chamber is detected to be ≥0.5%, it automatically switches to the internal circulation mode and closes the external passage; under special working conditions (such as power outage in the chamber), the butterfly switch automatically switches to the mechanical normally open state to ensure the minimum ventilation volume (100m³ / h).

[0023] The start and stop of the drive motor 9 is controlled by a controller, and the position of the controller is set by the staff according to the actual situation during operation. The controller is used to control the electrical devices used in this solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, display screens, computer input devices, switch buttons, communication equipment, lights, speakers and microphones; the controller is an Intel processor, an AMD processor, a PLC controller, an ARM processor or a single-chip microcomputer, and the supporting motherboard, memory stick, storage medium and power supply are also used therewith, and the power supply is AC or a lithium battery; when a display screen is provided, a display card is also provided; for the operating principle of the controller, please refer to "Principles of Automatic Control", "Principles of Microcontrollers and Application Simulation Cases" and "Principles and Applications of Sensors" published by Tsinghua University Press, and other books in the field can be used for reference; other automatic controls and electrical devices not mentioned are all knowledge well known to those skilled in the art and will not be repeated here.

[0024] Under normal weather conditions (full heat exchange mode): External air enters the device through the air inlet pipe 4. At this time, the butterfly switch 11 on the air inlet pipe 4 and the exhaust pipe 6 is in the open state. The electric push rod 1105 in the butterfly switch 11 pushes the connecting block 1104 to rotate the first baffle 1101 and the second baffle 1102 to the open position. The external air smoothly enters the first cleaning chamber 1001 of the impurity removal box 10. In the first cleaning chamber 1001, the air is guided by the spiral plate 1004, and impurities such as dust are intercepted by the filter 1005. The fine fluff further absorbs the dust and then passes through the processing box 2. After cleaning, a part of the dirty air in the chamber enters the ventilation chamber 3 through the groove on the top of the processing box 2 to exchange full heat with the external air, and finally is transported to the inside of the chamber through the air outlet pipe 5 to complete the fresh air supply, and the other part is discharged from the device through the exhaust pipe 6.

[0025] In case of bad external weather (internal circulation filtering mode): When it is detected that the external weather is bad, the butterfly switches 11 on the air inlet pipe 4 and the air exhaust pipe 6 are closed; the electric push rod 1105 drives the connecting block 1104 to move, so that the first baffle 1101 and the second baffle 1102 rotate to the closed position, blocking the entry of external air and the discharge of internal air. The air in the chamber enters the second cleaning bin 1002 of the impurity removal box 10 through the air suction pipe 12. In the second cleaning bin 1002, the spiral plate 1004 conducts spiral guiding on the air flow, so that the air passes through the filter screen 1005 multiple times, and dust and other impurities are intercepted by the filter screen 1005 to achieve preliminary cleaning. Then, it enters the filter chamber 201 of the processing box 2 through the three-way pipe 13 and the connecting pipe 7, and is adsorbed and filtered by the activated carbon filter screen 8 in the filter chamber 201 to remove harmful gases and odors. After the treatment, it enters the ventilation chamber 3 through the through groove at the top of the processing box 2, and then is sent back into the chamber again through the air outlet pipe 5, realizing the internal circulation filtration of the air in the chamber and maintaining the air quality in the chamber.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An underground artificial chamber fresh air guarantee device, comprising a housing (1), characterized in that: At the bottom of the inner wall of the housing (1), a treatment box (2) is fixedly arranged. At the top of the treatment box (2), a ventilation chamber (3) is fixedly arranged. On the right side of the housing (1), an air inlet pipe (4) is fixedly arranged. On the left side of the ventilation chamber (3), an air outlet pipe (5) is fixedly arranged. On the right side of the treatment box (2), an exhaust pipe (6) is fixedly arranged and on the left side, a connecting pipe (7) is fixedly arranged. Inside the treatment box (2), a rotating shaft is rotatably arranged, and activated carbon filter meshes (8) are fixedly arranged in an array on the rotating shaft. On the side of the treatment box (2), a driving motor (9) is fixedly arranged, and the driving motor (9) is in transmission connection with the rotating shaft. Inside the treatment box (2), a filtering chamber (201) and a solution chamber (202) are arranged up and down. At the bottom of the inner wall of the housing (1), a impurity removal box (10) is fixedly arranged. The other end of the connecting pipe (7) is communicated with the impurity removal box (10), and the other end of the air inlet pipe (4) is communicated with the impurity removal box (10). At the top of the impurity removal box (10), an air suction pipe (12) is fixedly arranged. Butterfly switches (11) are fixedly arranged on both the air inlet pipe (4) and the exhaust pipe (6).

2. The fresh air guarantee device for an underground artificial chamber according to claim 1, characterized in that: A through slot is opened near the right side at the top of the treatment box (2) and is communicated with the ventilation chamber (3). Spiral blocks are fixedly arranged in an array on the inner wall of the ventilation chamber (3). The treatment box (2) is arranged in a cylindrical shape, and the ventilation chamber (3) is arranged in an arc shape.

3. The fresh air guarantee device for an underground artificial chamber according to claim 2, wherein: The filtering chamber (201) and the solution chamber (202) are directly separated by a partition board. The rotating shaft passes through the partition board and is rotatably connected. The exhaust pipe (6) and the connecting pipe (7) are communicated with the filtering chamber (201). The solution chamber (202) is filled with a removal liquid. An inlet liquid pipe (203) and a drain pipe (204) are fixedly arranged on the right side of the solution chamber (202).

4. The fresh air guarantee device for an underground artificial chamber according to claim 1, wherein: The interior of the impurity removal box (10) is divided into a first cleaning chamber (1001), a second cleaning chamber (1002), and a sewage chamber (1003). Spiral plates (1004), filter meshes (1005), and spray pipes (1006) are fixedly arranged inside both the first cleaning chamber (1001) and the second cleaning chamber (1002). The air suction pipe (12) is communicated with the top of the second cleaning chamber (1002). The air inlet pipe (4) is communicated with the first cleaning chamber (1001). A tee pipe (13) is fixedly arranged near the bottom on the side of the impurity removal box (10). One end of the tee pipe (13) is connected to the connecting pipe (7) and the other two ends are communicated with the first cleaning chamber (1001) and the second cleaning chamber (1002).

5. The fresh air guarantee device for an underground artificial chamber according to claim 4, characterized in that: The sewage tank (1003) is arranged at the bottom of the inner wall of the impurity removal tank (10). Through holes are arranged in an array at the bottoms of the first cleaning tank (1001) and the second cleaning tank (1002) and are communicated with the sewage tank (1003). The sewage discharge pipes (1008) are symmetrically and fixedly arranged near the top of the impurity removal tank (10) and are communicated with the sewage tank (1003). The water inlet pipes (1007) are symmetrically and fixedly arranged near the top of the impurity removal tank (10). The water inlet pipes (1007) are communicated with the corresponding spray pipes (1006). The spray pipes (1006) are arranged in a circular ring shape and are fixedly arranged near the top of the inner wall of the impurity removal tank (10). Nozzles are fixedly arranged in an array at the bottom of the spray pipes (1006).

6. The fresh air guarantee device for an underground artificial chamber according to claim 4, wherein: The filter screen (1005) is arranged in a cross shape, and circular holes are arranged in an array on the spiral plate (1004).

7. The fresh air guarantee device for an underground artificial chamber according to claim 1, characterized in that: The butterfly switch (11) includes a first baffle (1101) and a second baffle (1102) which are arranged in a semi-circular shape. The first baffle (1101) is sleeved on the second baffle (1102) and is hinged, and the end face abuts against the inner wall of the pipeline. A support frame (1103) is fixedly arranged at the top of the pipeline. A connecting block (1104) is slidably arranged on the inner wall of the support frame (1103). An electric push rod (1105) is fixedly arranged inside the support frame (1103). The electric push rod (1105) is in transmission connection with the connecting block (1104) to drive the first baffle (1101) and the second baffle (1102) to rotate to complete the opening and closing of the pipeline.

8. The fresh air guarantee device for an underground artificial chamber according to claim 7, characterized in that: Sliders are symmetrically and fixedly arranged on both sides of the connecting block (1104). Chute grooves are arranged on the inner wall of the support frame (1103). The sliders slide along the chute grooves. Card slots are symmetrically arranged on the inner wall of the connecting block (1104). Protrusions are fixedly arranged at the tops of the first baffle (1101) and the second baffle (1102). The protrusions abut against the corresponding card slots.

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