Mechanical tail gas filtering device for tunnel construction

Abstract

The utility model discloses a mechanical tail gas filtering device for tunnel construction. The mechanical tail gas filtering device comprises a trailer and a filtering main body, the trailer comprises a chassis assembly and a cage box. The filtering main body is arranged in the cage box and comprises a box body, a water mist treatment assembly and an adsorption consumable box; the water mist treatment assembly comprises a spraying pipe, a water supply pipe, a water pump and a water source bin; the spraying pipe is arranged at the middle lower part of the inner cavity of the box body; and an adsorption consumable box is arranged at the upper part of the spraying pipe. The device disclosed by the utility model can conveniently move along with a working surface, two-step treatment of water mist treatment and activated carbon adsorption is adopted, sucked air can be effectively pretreated through water mist treatment, cooling and dust falling are realized, and then tail gas is absorbed through adsorption consumables such as activated carbon and the like; according to the specific structure, aiming at the problems that dust on a tunnel construction site is large and a spraying water outlet is easy to block, a spraying nozzle with a self-cleaning function is adopted, and the problems can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, in particular to a mechanical exhaust gas filtering device for tunnel construction. Background Art

[0002] A large number of construction machinery are required during tunnel construction, most of which are powered by internal combustion engines. A large amount of exhaust gas is generated during the operation of the equipment, and the accumulation of exhaust gas poses a serious health threat to construction workers. Currently, this problem is mostly solved through ventilation, but as the tunnel extends, the ventilation form of external air supply has poor exhaust gas treatment capacity for the working surface. At present, exhaust gas filtration devices are also used when the tunnel is open to traffic, but the relevant devices are generally large in size and are not suitable for tunnel construction operations. Utility Model Content

[0003] The utility model aims to provide a mechanical exhaust gas filtering device for tunnel construction to solve the problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a mechanical exhaust gas filtering device for tunnel construction, including a trailer and a filtering body; the trailer includes a chassis assembly and a cage box; the filtering body is arranged in the cage box, and the filtering body includes a box body, a water mist treatment assembly, and an adsorption consumable box; an openable top cover is provided on the top of the box body, an air inlet and a sewage outlet are provided on the bottom, and an air outlet is provided on the top surface of the top cover; the water mist treatment assembly includes a spray pipe, a water supply pipe, a water pump, and a water source tank, and the spray pipe is provided in the lower middle part of the box body cavity; an adsorption consumable box is provided on the upper part of the spray pipe, a through hole is provided on the bottom surface of the adsorption consumable box, and adsorption consumables are provided inside.

[0005] Preferably, the filter body further comprises a first filter screen, and the first filter screen is arranged inside the box body between the spray pipe and the adsorption consumables box.

[0006] Preferably, a plurality of staggered baffles are provided between the spray pipe and the first filter screen, and the baffles are arranged to be inclined downward.

[0007] Preferably, a plurality of spray nozzles are arranged on the spray pipe; the spray nozzle comprises an outer shell, an inner partition, a central fixed ring, a movable column and an elastic ring; the outer shell is an internally hollow cylindrical structure, and a spray microhole is arranged at the bottom; the inner partition is arranged in the cavity inside the outer shell, and a plurality of water-permeable through holes are arranged on the inner partition, and a cylindrical groove is arranged at the center of the lower part; the cylindrical groove is connected to an external control tube through one or more water-permeable through holes or through a connecting pipe; the central fixed ring is arranged in the groove; the upper part of the movable column is a pressure-bearing plate with the same inner diameter as the groove, and a sliding column is arranged at the lower part of the pressure-bearing plate, and a through-hole column is arranged at the lower part of the sliding column, the outer diameter of the through-hole column is smaller than the inner diameter of the spray microhole, and a pointed part is arranged at the bottom; the sliding column passes through the central through hole of the central fixing ring, the pressure plate is arranged in the groove, and an elastic ring is arranged between the pressure plate and the upper end face of the central fixing ring.

[0008] Preferably, the inner partition plate is connected to the inner cavity of the outer shell, and the central fixing ring is connected to the inner cavity of the groove through a threaded structure.

[0009] Preferably, the connecting pipes of the plurality of spray nozzles are connected to the same control pipe, the control pipe is connected to the water pump via a valve, one end of the connecting pipe is connected to the threaded through hole on the inner partition, and the other end passes through the side wall of the outer shell.

[0010] The utility model provides a mechanical exhaust gas filtering device for tunnel construction. The device is arranged on a trailer and can be conveniently moved with the working surface. It adopts a two-step treatment of water mist treatment and activated carbon adsorption. The water mist treatment can effectively pre-treat the inhaled air to achieve cooling and dust reduction, and then the exhaust gas is absorbed by adsorption consumables such as activated carbon. In terms of specific structure, in view of the problem that the tunnel construction site is dusty and the spray outlet is easy to be blocked, a spray nozzle with a self-cleaning function is adopted to effectively solve the problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall solution of the utility model.

[0012] Figure 2 It is a schematic diagram of the explosion of the sprinkler nozzle of the utility model.

[0013] Figure 3 It is a cutaway schematic diagram of a spray nozzle of the utility model.

[0014] Figure 4 It is a schematic cross-sectional view of a shower nozzle according to another embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] As attached Figure 1 As shown, a mechanical exhaust gas filtering device for tunnel construction involved in the utility model comprises a trailer 1 and a filtering body 2.

[0017] The trailer 1 includes a chassis assembly 11 and a cage box 12. The side of the cage box 12 is a steel mesh and a maintenance door that can be opened and closed is arranged on the side. The filter body 2 is arranged in the cage box 12, which can effectively reduce the damage caused by stones or other debris splashed on the working surface.

[0018] The filter body 2 includes a box body 21 , which is a hollow cavity structure. An openable top cover 210 is provided on the top, an air inlet 211 and a sewage outlet 212 are provided on the bottom, and an air outlet 213 is provided on the top surface of the top cover 210 .

[0019] Openings are provided on the cage box 12 corresponding to the positions of the air inlet 211 and the sewage outlet 212, through which the air inlet pipe and the sewage outlet pipe extend.

[0020] A first filter screen 23 is arranged in the middle of the box body 21 to divide the box body 21 into two interconnected chambers, the first filter screen 23 can be a metal filter screen, which is easy to clean.

[0021] The water mist treatment assembly 22 includes a spray pipe 221, a water supply pipe 222, a water pump 223, and a water source tank 224. The spray pipe 221 is disposed in the lower chamber.

[0022] When in use, after the exhaust gas enters the interior of the treatment box 21, the water pump 223 is started to extract the water in the water source tank 224 through the water supply pipe 222 and spray it into the interior of the box 21 through the spray pipe 221, so as to cool the exhaust gas entering therein and also knock down some large particles in the exhaust gas, thereby effectively protecting the treatment box 21.

[0023] Furthermore, a plurality of staggered baffles 225 are provided between the spray pipe 221 and the first filter screen 23. The baffles 225 are arranged to tilt downward, and a gap is provided between the lower side and the inner wall of the box body 21 to slow down the air flow speed, which is beneficial to the subsequent adsorption treatment.

[0024] An adsorption consumables box 24 is arranged on the upper part of the first filter screen 23. The bottom surface of the adsorption consumables box 24 is provided with a through hole, and adsorption consumables 241 are arranged inside. The adsorption consumables 241 can be activated carbon or other adsorption substances.

[0025] After the adsorption consumable 241 becomes ineffective, the upper opening of the cage box 12 is opened, the top cover 210 is opened, and the adsorption consumable box 24 is taken out, and the adsorption consumable can be easily replaced.

[0026] Furthermore, as attached Figure 2 As shown in 3, the present application also provides a spray nozzle p with a self-cleaning function, and multiple spray nozzles p are arranged on the spray pipe 221.

[0027] The spray nozzle p comprises an outer shell p1, an inner partition plate p2, a central fixing ring p3, a movable column p4, and an elastic ring p5.

[0028] The shell p1 is a cylindrical structure with a hollow interior, and a spray microhole p11 is provided at the bottom. Furthermore, the spray microhole p11 is provided with a trumpet-shaped structure above and below.

[0029] The inner partition p2 is arranged in the cavity inside the outer shell p1 and is connected by a threaded structure. A plurality of water-permeable through holes p21 are arranged on the inner partition p2, and a cylindrical groove p22 is arranged at the center of the lower part. The cylindrical groove 22 is connected to one or more water-permeable through holes p21.

[0030] In the attached Figure 4 In another embodiment shown, the cylindrical groove 22 can also be connected to the control pipe through a connecting pipe h1, and the connecting pipes h1 of the plurality of the spray nozzles p are connected to the control pipe, and the control pipe is connected to the water pump 223 through a valve. One end of the connecting pipe h1 is connected to the threaded through hole on the inner partition p2. The other end passes through the side wall of the outer shell p1. The specific connecting pipe h1 may include multiple parts, which are used to pass through the outer shell p1 and ensure water tightness. Specifically, a threaded through hole is set on the upper part of the side wall of the outer shell p1, and two sections of metal connecting pipes are respectively connected to the threaded through holes on the outer shell p1 through threads on the inner and outer sides, and the inner metal connecting pipe is connected to the metal connecting pipe interface connected to the threaded through hole on the inner partition p2 through a hose.

[0031] The central fixing ring p3 is disposed in the groove p22 and connected via a threaded structure.

[0032] The upper part of the movable column p4 is a pressure plate p41 with the same inner diameter as the groove p22, and the lower part of the pressure plate p41 is provided with a sliding column p42, and the lower part of the sliding column p42 is provided with a through-hole column p43. The outer diameter of the through-hole column p43 is smaller than the inner diameter of the spray microhole p11, and a tip is provided at the bottom.

[0033] The sliding column p42 passes through the central through hole of the central fixing ring p3, the pressure plate p41 is arranged in the groove p22, and an elastic ring p5 is arranged between the pressure plate p41 and the upper end surface of the central fixing ring p3.

[0034] During use, if the water pressure in the spray pipe 221 and the control pipe changes, the pressure plate p41 will be driven to compress the elastic ring p5 with different pressures, thereby realizing the up and down movement of the through-hole column p43 to clean the spray micropores p11.

[0035] It should be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

Claims

1. A mechanical exhaust gas filtering device for tunnel construction, characterized in that: It includes a trailer and a filter body; the trailer includes a chassis assembly and a cage box; the filter body is arranged in the cage box, and the filter body includes a box body, a water mist treatment assembly, and an adsorption consumable box; an openable top cover is arranged on the top of the box body, an air inlet and a sewage outlet are arranged on the bottom, and an air outlet is arranged on the top surface of the top cover; the water mist treatment assembly includes a spray pipe, a water supply pipe, a water pump, and a water source tank, and the spray pipe is arranged in the lower middle part of the box body cavity; an adsorption consumable box is arranged on the upper part of the spray pipe, a through hole is arranged on the bottom surface of the adsorption consumable box, and adsorption consumables are arranged inside.

2. The mechanical exhaust gas filtering device for tunnel construction according to claim 1, characterized in that: The filter body further comprises a first filter screen, which is arranged inside the box body between the spray pipe and the adsorption consumables box.

3. The mechanical exhaust gas filtering device for tunnel construction according to claim 2, characterized in that: A plurality of staggered baffles are arranged between the spray pipe and the first filter screen, and the baffles are arranged to tilt downward.

4. The mechanical exhaust gas filtering device for tunnel construction according to claim 1, characterized in that: A plurality of spray nozzles are arranged on the spray pipe; the spray nozzle comprises an outer shell, an inner partition, a central fixed ring, a movable column and an elastic ring; the outer shell is a hollow cylindrical structure with spray micropores at the bottom; the inner partition is arranged in the cavity inside the outer shell, a plurality of water-permeable through holes are arranged on the inner partition, and a cylindrical groove is arranged at the center of the lower part; the cylindrical groove is connected to an external control tube through one or more water-permeable through holes or through a connecting pipe; the central fixed ring is arranged in the groove; the upper part of the movable column is a pressure-bearing plate with the same inner diameter as the groove, a sliding column is arranged at the lower part of the pressure-bearing plate, a through-hole column is arranged at the lower part of the sliding column, the outer diameter of the through-hole column is smaller than the inner diameter of the spray micropores, and a pointed part is arranged at the bottom; the sliding column passes through the central through hole of the central fixed ring, the pressure plate is arranged in the groove, and an elastic ring is arranged between the pressure plate and the upper end face of the central fixed ring.

5. The mechanical exhaust gas filtering device for tunnel construction according to claim 4, characterized in that: The inner partition plate is connected to the inner cavity of the outer shell, and the central fixing ring is connected to the inner cavity of the groove through a threaded structure.

6. The mechanical exhaust gas filtering device for tunnel construction according to claim 4, characterized in that: The connecting pipes of the plurality of spray nozzles are connected to the same control pipe, the control pipe is connected to the water pump through a valve, one end of the connecting pipe is connected to the threaded through hole on the inner partition, and the other end passes through the side wall of the shell.

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