A nozzle device for a tunnel cleaning machine based on dry ice micro-explosion

Abstract

The present invention provides a nozzle device for a tunnel cleaning machine based on dry ice micro-explosion. The cleaning device includes a circulation member, a cleaning movable device, a nozzle and a connecting member. The nozzle is located at one end of the circulation member, and the connecting member is located at the other end of the circulation member. The cleaning movable device is connected to the connecting member. The circulation member includes a first channel and a second channel. The second channel is arranged inside the first channel, and the first channel and the second channel are not connected; the nozzle injection part and the recovery part, the connecting member includes a first through hole, a second through hole and a third through hole. The first through hole and the second through hole are connected to the first channel, and the third through hole is connected to the second channel; the air compression mechanism is connected to the first through hole, the liquid carbon dioxide storage tank is connected to the second through hole, and the recovery device is connected to the third through hole through a pipeline. The present invention can realize the advantages of a tunnel cleaning machine integrating green cleaning, collection, storage of pollutants and recovery of gas, and multi-angle cleaning of the nozzle.

Description

Technical Field

[0001] The invention relates to the field of tunnel cleaning machines, and in particular to a nozzle device of a tunnel cleaning machine based on dry ice micro-explosion. Background Art

[0002] Currently, tunnel cleaning mostly relies on manpower or vehicle-mounted high-pressure water flow for cleaning. The traditional tunnel cleaning medium is usually water, which needs to be mixed with nitrogen and pressurized for high-pressure flushing. When tunnel cleaning is carried out in the traditional way, part of the tunnel will be closed. A large amount of water resources will be wasted during the operation, and the fallen dirt needs to be cleaned up again by workers, which leads to high labor intensity, high energy and water consumption, resulting in high cleaning costs and great environmental pollution. During the cleaning process, there will be a certain amount of traffic congestion, and it is also limited by the power of the water pump and the volume of the water tank. During the operation, a lot of water is consumed and the fallen pollutants are difficult to recover. The closure of part of the tunnel and the resulting road congestion have greatly increased the possibility of traffic accidents.

[0003] Prior art, such as the patent document with Chinese application number 201210357293.X and publication date 2012.12.19, discloses a tunnel dry ice cleaning machine, which includes an engineering vehicle, an air compressor, a liquid carbon dioxide storage tank arranged on the engineering vehicle, a cleaning nozzle machine bogie, a cleaning control display, a control platform and a dry ice cleaning device, wherein the air compressor is rigidly connected to the engineering vehicle through a traction frame; the cleaning control display is installed on the control platform to display the status parameters of the entire device; a control system is encapsulated in the control platform, and the entire device is controlled by the control system; the dry ice cleaning device includes a dry ice generation tube, a compressed air tube and a cleaning nozzle tube, and the above structure uses liquid carbon dioxide to clean through the cleaning nozzle tube, but the structure uses liquid carbon dioxide to clean the tunnel wall. Since a large amount of liquid carbon dioxide is used, it will cause environmental pollution, and the structure cannot recover the dirt after cleaning, which leads to the need for secondary cleaning, increasing the workload. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a nozzle device for a tunnel cleaning machine which integrates cleaning, dirt collection and gas recovery and performs multi-angle cleaning.

[0005] To achieve the above-mentioned purpose, a nozzle device of a tunnel cleaning machine based on dry ice micro-explosion comprises a cleaning device,

[0006] The cleaning device includes a circulation member, a cleaning moving device, a nozzle and a connecting member, wherein the nozzle is located at one end of the circulation member, the connecting member is located at the other end of the circulation member, the cleaning moving device is connected to the connecting member, the circulation member includes a first channel and a second channel, the second channel is arranged inside the first channel, and the first channel and the second channel are not connected;

[0007] The nozzle includes an injection part connected to the first channel and a recovery part connected to the second channel; the connecting piece includes a first through hole, a second through hole and a third through hole, the first through hole and the second through hole are connected to the first channel, and the third through hole is connected to the second channel;

[0008] The first through hole and the second through hole are symmetrically arranged with respect to the third through hole; the air compression mechanism is connected to the first through hole through a pipeline, the liquid carbon dioxide storage tank is connected to the second through hole through a pipeline, and the recovery device is connected to the third through hole through a pipeline;

[0009] The cleaning moving device includes a slide rail frame, a transverse moving mechanism, a longitudinal motor, and a nozzle steering motor. The transverse moving mechanism includes a rack guide rail and a transverse motor. Both ends of the rack guide rail are connected to the slide rail frame, the transverse motor is installed on the rack guide rail, one end of the longitudinal motor is fixed on the slide rail frame, and the other end of the longitudinal motor is connected to the rack guide rail. One end of the nozzle steering motor is arranged on one side of the transverse motor, and the other end of the nozzle steering motor is connected to the connecting piece.

[0010] In the above arrangement, since an injection part and a recovery part are provided on the nozzle, and the injection part is connected to the air compression mechanism and the liquid carbon dioxide storage tank through the first channel, and the recovery part is connected to the recovery device through the third through hole, the first channel and the second channel do not affect each other, so that when in use, the air in the first channel is compressed by the air compression mechanism and then the liquid carbon dioxide is sprayed into the injection part for cleaning, and at the same time, the dirt and carbon dioxide after cleaning enter the second channel through the recovery part on the nozzle and then enter the recovery device through the third through hole, so that the tunnel cleaning machine can integrate cleaning, dirt collection and gas recovery. At the same time, the nozzle can move laterally on the rack guide rail and rotate on the nozzle steering motor through the cleaning moving device, thereby realizing the advantage of multi-angle cleaning of the nozzle.

[0011] Furthermore, the longitudinal motor is installed on the top of one side of the slide rail frame. In the above arrangement, the longitudinal motor is arranged on the top of the slide rail frame, so that the longitudinal motor drives the rack guide rail to move up and down.

[0012] Furthermore, the longitudinal motor is connected to a lead screw which passes through the rack guide rail to control the lifting and lowering of the rack guide rail.

[0013] Furthermore, guide rails are provided at the connection points between the slide rail frame and the rack guide rail, and the rack guide rail is provided with a T-shaped slot matching the guide rail. The above arrangement enables the rack guide rail to move stably on the slide rail frame by using the T-shaped slot.

[0014] Furthermore, the injection portion of the first channel includes four injection ports arranged in a straight line. The above configuration ensures a cleaning effect by providing a plurality of injection ports.

[0015] Furthermore, the flow member is provided with a hole near the nozzle, and the hole is connected with the second channel to increase the recovery rate and range.

[0016] Furthermore, the lateral movement mechanism also includes a lateral bracket, which is provided with a lateral through hole matching the width direction of the rack guide rail, and a gear matching the rack guide rail is provided in the lateral through hole. The lateral motor is fixed on the top surface of the lateral bracket, and the nozzle steering motor is fixed on one side of the lateral bracket. The above arrangement is achieved by providing a gear on the lateral bracket, and the gear matches the rack guide to realize the movement of the lateral bracket, so that the lateral motor moves along the rack guide, thereby ensuring the reliability of the movement of the lateral motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the tunnel cleaning machine based on dry ice micro-explosion of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the nozzle device of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the cleaning device of the present invention.

[0020] Figure 4 It is a schematic diagram of the disassembled structure of the cleaning device of the present invention.

[0021] Figure 5 It is a schematic diagram of the nozzle structure of the present invention.

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the connection between the nozzle and the flow member of the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] See also Figure 1-Figure 6 , a nozzle device of a tunnel cleaning machine based on dry ice micro-explosion, comprising a cleaning device 1, a liquid carbon dioxide storage tank 3, an air compression mechanism 2, and a recovery device 4, wherein the cleaning device 1 comprises a circulation member 11, a cleaning moving device 12, a nozzle 13, and a connecting member 14, wherein the nozzle 13 is located at one end of the circulation member 11, the connecting member 14 is located at the other end of the circulation member 11, the cleaning moving device 12 is connected to the connecting member 14, the circulation member 11 comprises a first channel and a second channel, the second channel is arranged inside the first channel, and the first channel and the second channel are not connected;

[0025] The nozzle 13 includes an injection portion 131 communicating with the first channel and a recovery portion 132 communicating with the second channel; the connecting member 14 includes a first through hole 141, a second through hole 142 and a third through hole 143, the first through hole 141 and the second through hole 142 communicating with the first channel, and the third through hole 143 communicating with the second channel;

[0026] The first through hole 141 and the second through hole 142 are symmetrically arranged with respect to the third through hole 143; the air compression mechanism 3 is connected to the first through hole 141 through a pipeline, the liquid carbon dioxide storage tank 2 is connected to the second through hole 142 through a pipeline, and the recovery device 4 is connected to the third through hole 143 through a pipeline;

[0027] The cleaning moving device 12 includes a slide rail frame 121, a transverse moving mechanism, a longitudinal motor 123, and a nozzle steering motor 124. The transverse moving mechanism includes a rack guide 1221 and a transverse motor 1222. Both ends of the rack guide 1221 are connected to the slide rail frame 121. The transverse motor 1222 is installed on the rack guide 1221. One end of the longitudinal motor 123 is fixed on the slide rail frame 121, and the other end of the longitudinal motor 123 is connected to the rack guide 1221. One end of the nozzle steering motor 124 is arranged on one side of the transverse motor 1222, and the other end of the nozzle steering motor 124 is connected to the connecting piece 14.

[0028] In the above arrangement, since the nozzle 13 is provided with an injection part 131 and a recovery part 132, and the injection part 131 is connected to the air compression mechanism 3 and the liquid carbon dioxide storage tank 2 through the first channel, and the recovery part 132 is connected to the recovery device 4 through the third through hole 143, the first channel and the second channel do not affect each other, so that when in use, the air in the first channel is compressed by the air compression mechanism 3 and then the liquid carbon dioxide is sprayed into the injection part 131 for cleaning. At the same time, the dirt and carbon dioxide after cleaning enter the second channel through the recovery part 132 on the nozzle and then enter the recovery device 4 through the third through hole 143, so that the tunnel cleaning machine can be realized to integrate cleaning, collection and recovery of gas. At the same time, the nozzle 13 can move laterally on the rack guide rail 1221 and rotate on the nozzle steering motor 124 through the cleaning moving device 12, so as to achieve the advantage of multi-angle cleaning of the nozzle.

[0029] The longitudinal motor 123 is installed on the top of one side of the slide rail frame 121. In the above configuration, the longitudinal motor 123 is set on the top of the slide rail frame 121, so that the longitudinal motor 123 drives the rack guide rail 1221 to move up and down.

[0030] The longitudinal motor 123 is connected to the screw rod 125 , and the screw rod 125 passes through the rack guide rail 1221 to control the lifting of the rack guide rail 1221 .

[0031] The guide rails 1211 are respectively provided at the connection between the slide rail frame 121 and the rack guide rail 1221, and the rack guide rail 1221 is provided with a T-shaped slot 12211 matching the guide rail 1211. The above arrangement enables the rack guide rail to move stably on the slide rail frame 121 by adopting the T-shaped slot.

[0032] The injection portion 131 of the first channel includes four injection ports arranged in a straight line. The above configuration ensures a cleaning effect and enhances the cleaning ability by providing a plurality of injection ports.

[0033] The flow member is provided with a hole 133 near the nozzle 13, and the hole 133 is connected with the second channel to increase the recovery rate and range.

[0034] The lateral movement mechanism also includes a lateral bracket 1223, on which a lateral through hole 1224 matching the width direction of the rack guide 1221 is provided, and a gear 1225 matching the rack guide is provided in the lateral through hole 1224, and a lateral motor 1222 is fixed on the top surface of the lateral bracket 1223, and a nozzle steering motor 124 is fixed on one side of the lateral bracket 1223. The above arrangement is achieved by arranging a gear 1225 on the lateral bracket 1223, and the gear 1225 matches the rack guide 1221 to realize the movement of the lateral bracket 1223, so that the lateral motor 1222 moves along the rack guide 1221, thereby ensuring the reliability of the movement of the lateral motor 1222.

[0035] Working principle: Since the nozzle is provided with an injection part and a recovery part, and the injection part is connected to the air compression mechanism and the liquid carbon dioxide storage tank through the first channel, and the recovery part is connected to the recovery device through the third through hole, the first channel and the second channel do not affect each other, so that when in use, the air in the first channel is compressed by the air compression mechanism and then the liquid carbon dioxide is ejected into the injection part for cleaning, and at the same time, the dirt and carbon dioxide after cleaning enter the second channel through the recovery part on the nozzle and then enter the recovery device through the third through hole, so that the tunnel cleaning machine can integrate cleaning, dirt collection and gas recovery. At the same time, the injection part of the nozzle device adopts the Laval nozzle principle, and the mixed gas-solid two-phase flow of compressed air and dry ice is accelerated to supersonic speed in this part, and the concrete surface is cleaned, which greatly improves the cleaning efficiency. And the solid dirt dropped after cleaning and the carbon dioxide generated by the gasification of dry ice are collected and transported to the collection device through a hose for dirt storage and carbon dioxide absorption, which solves the problem of secondary treatment while reducing environmental pollution and achieving zero emissions.

Claims

1. A nozzle device for a tunnel cleaning machine based on dry ice micro-explosion, characterized in that: The cleaning device includes a circulation member, a cleaning moving device, a nozzle and a connecting member, wherein the nozzle is located at one end of the circulation member, the connecting member is located at the other end of the circulation member, the cleaning moving device is connected to the connecting member, the circulation member includes a first channel and a second channel, the second channel is arranged inside the first channel, and the first channel and the second channel are not connected; The nozzle includes an injection part connected to the first channel and a recovery part connected to the second channel; the connecting piece includes a first through hole, a second through hole and a third through hole, the first through hole and the second through hole are connected to the first channel, and the third through hole is connected to the second channel; The first through hole and the second through hole are symmetrically arranged with respect to the third through hole; the air compression mechanism is connected to the first through hole through a pipeline, the liquid carbon dioxide storage tank is connected to the second through hole through a pipeline, and the recovery device is connected to the third through hole through a pipeline; The cleaning moving device includes a slide rail frame, a transverse moving mechanism, a longitudinal motor, and a nozzle steering motor. The transverse moving mechanism includes a rack guide rail and a transverse motor. Both ends of the rack guide rail are connected to the slide rail frame. The transverse motor is installed on the rack guide rail. One end of the longitudinal motor is fixed to the slide rail frame. The other end of the longitudinal motor is connected to the rack guide rail. One end of the nozzle steering motor is arranged on one side of the transverse motor. The other end of the nozzle steering motor is connected to the connecting piece. The injection portion of the first channel includes four injection ports arranged in a straight line; The injection part is connected to the air compression mechanism and the liquid carbon dioxide storage tank through the first channel, and the recovery part is connected to the recovery device through the third through hole. The first channel and the second channel do not affect each other. When in use, the air in the first channel is compressed by the air compression mechanism and then the liquid carbon dioxide is sprayed into the injection part for cleaning. At the same time, the dirt and carbon dioxide after cleaning enter the second channel through the recovery part on the nozzle and then enter the recovery device through the third through hole.

2. The nozzle device of a tunnel cleaning machine based on dry ice micro-explosion according to claim 1 is characterized in that: The longitudinal motor is mounted on the top of one side of the slide rail frame.

3. The nozzle device of the tunnel cleaning machine based on dry ice micro-explosion according to claim 1 is characterized in that: The longitudinal motor is connected to a lead screw which passes through the rack guide rail.

4. The nozzle device of a tunnel cleaning machine based on dry ice micro-explosion according to claim 1 is characterized in that: The guide rails are respectively arranged at the connection positions between the slide rail frame and the rack guide rail, and the rack guide rail is provided with a T-shaped groove matching with the guide rail.

5. The nozzle device of a tunnel cleaning machine based on dry ice micro-explosion according to claim 1 is characterized in that: The flow member is provided with a hole near the nozzle, and the hole is communicated with the second channel.

6. The nozzle device of a tunnel cleaning machine based on dry ice micro-explosion according to claim 1 is characterized in that: The lateral movement mechanism also includes a lateral bracket, which is provided with a lateral through hole matching the width direction of the rack guide rail, and a gear matching the rack guide rail is provided in the lateral through hole. The lateral motor is fixed on the top surface of the lateral bracket, and the nozzle steering motor is fixed on one side of the lateral bracket.

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