Smoke dust filtering and catalyzing synergistic purification device

Abstract

The utility model relates to a blasting fume purification technology, in particular to a smoke dust filtering and catalyzing collaborative purification device which comprises a shell, a bearing plate is arranged in the shell, the lower side of the shell is communicated with an air inlet pipe, and the upper side of the shell is communicated with an air outlet pipe; the bearing plate is provided with a pleated filter cartridge in a hanging manner, the pleated filter cartridge is of a double-layer structure, the pleated filter cartridge comprises an inner filter element and an outer filter element, the inner filter element is located in the outer filter element, and the vertical length of the inner filter element is smaller than that of the outer filter element. According to the utility model, the inner filter element and the outer filter element are integrated into the nested pleated filter cartridge, and the catalyst is coated on the surface of the inner filter element, so that dust and harmful gas can be synergistically removed in the same shell.

Description

Technical Field

[0001] The utility model relates to a blasting smoke purification technology, in particular to a smoke filtering and catalytic coordinated purification device. Background Art

[0002] Tunnel blasting is a common project nowadays, but it will inevitably produce a large amount of pollutants in the process, among which dust, carbon monoxide and nitrogen oxide gases account for an important part. The generated dust not only affects human health, causing people to suffer from respiratory and lung diseases, but also leads to reduced visibility, equipment wear, and harm to animals and plants; smoke such as carbon monoxide and nitrogen oxides are toxic and can easily cause poisoning of workers. Therefore, the treatment of pollutants generated during tunnel blasting is an urgent task to be solved.

[0003] It is understood that the treatment technologies for pollutants generated by this process include ventilation exhaust technology and fine water mist technology. The ventilation exhaust technology uses a fan to exhaust the blasting smoke to the outside of the tunnel. For long tunnels, the long exhaust time will restrict the production progress, and this technology cannot purify harmful gases and dust, which will cause air pollution. The fine water mist technology uses high-pressure hydraulic power to convert water into tiny droplets. By spraying high-pressure fine water mist, smoke and exhaust gas are washed and dust is settled. It can achieve a certain treatment effect on harmful gases and dust, but the treatment is generally insufficient and the efficiency is low.

[0004] Therefore, it is necessary to develop a smoke filtration and catalytic coordinated purification device. Summary of the invention

[0005] The utility model aims to provide a smoke filtering and catalytic coordinated purification device to improve the problems existing in the prior art.

[0006] A smoke filtering and catalytic coordinated purification device comprises a shell, a receiving plate is arranged inside the shell, an air inlet pipe is connected to the lower side of the shell, and an air outlet pipe is connected to the upper side of the shell; a pleated filter cartridge is suspended on the receiving plate, the pleated filter cartridge is a double-layer structure, the pleated filter cartridge comprises an inner filter element and an outer filter element, the inner filter element is located inside the outer filter element, and the vertical length of the inner filter element is smaller than that of the outer filter element;

[0007] A four-leaf opening and closing assembly is provided at the bottom of the pleated filter cartridge, the bottom of the outer filter element is engaged with the four-leaf opening and closing assembly, and the four-leaf opening and closing assembly is matched with the bottom of the inner filter element in a closed state, and a spray assembly for cleaning the pleated filter cartridge through airflow is provided on the upper side of the shell, and the airflow blown out by the spray assembly enters the inner filter element;

[0008] The four-leaf opening and closing component is opened under the action of the airflow of the spray component, so that the airflow enters from the inner filter element into between the outer filter element and the inner filter element, and sprays the outer filter element in the reverse direction.

[0009] More preferably, the four-leaf opening and closing assembly includes a square plate, blades and a torsion spring, the square plate is connected to the bottom of the outer filter element, the blades are rotatably connected to the square plate, and a torsion spring is connected between the blades and the square plate.

[0010] More preferably, the upper ends of the blades are arc-shaped, and when the blades are in a gathered and closed state, the upper edges form a circle that matches the bottom of the inner filter element.

[0011] More preferably, the spray assembly includes a spray pipe, which is arranged through the upper side of the outer shell, the spray pipe is connected to a nozzle, the nozzle is located directly above the inner filter element, the end of the spray pipe away from the nozzle is connected to an atmospheric bag, and a pulse valve is installed on the side of the spray pipe close to the atmospheric bag.

[0012] More preferably, it also includes a pre-opening component for opening the four-leaf opening and closing component in advance, the pre-opening component includes a small air bag, the small air bag is arranged on the blowing pipe, the small air bag is connected to an air supply pipe, the air supply pipe is slidably connected with a piston rod on the side away from the small air bag, a tension spring is connected between the piston rod and the air supply pipe, the tension spring is hinged with a support rod, the support rod is hinged to the blades, the blowing pipe is equipped with a safety valve, and the safety valve is located between the small air bag and the nozzle.

[0013] More preferably, it further comprises a dust collecting assembly for collecting dust, the dust collecting assembly comprises a dust storage box, the dust storage box is arranged below the shell, an ash hopper is arranged on the upper side of the dust storage box, the ash hopper is funnel-shaped, and an ash discharge valve is installed at the bottom of the ash hopper.

[0014] More preferably, a control panel is further included, and the control panel is electrically connected to the nozzle and the pulse valve.

[0015] More preferably, a dust shield is further included, and the dust shield is arranged on one side of the shell close to the air inlet pipe.

[0016] More preferably, the inner filter element is made of a filter material of metal oxide, and the side wall is honeycomb-shaped, and the inner and outer surfaces are evenly coated with a catalyst for removing smoke.

[0017] More preferably, the inner filter element is made of alumina.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] The utility model adopts a nested pleated filter cartridge arrangement in which an inner filter element and an outer filter element are integrated, and a catalyst is coated on the surface of the inner filter element, so that the synergistic removal of dust and harmful gases can be achieved in the same housing;

[0020] The utility model is provided with a four-leaf opening and closing assembly, so that the high-pressure gas enters the outer filter element from the inner filter element through the four-leaf opening and closing assembly, and due to the structure of the nested pleated filter cartridge, the high-pressure gas can only go out from the filter holes of the outer filter element, thereby reversely spraying the outer filter element, effectively removing the dust on the surface of the outer filter element; and because a torsion spring is provided at the bottom of each leaf of the four-leaf opening and closing assembly, when the pressure difference between the inside and outside of the inner filter element is not large after the high-pressure gas flows out, the leaves of the four-leaf opening and closing assembly will automatically close under the action of the torsion spring, so that the untreated polluted gas can be effectively prevented from directly entering the inner filter element and flowing out;

[0021] The utility model transmits the high-pressure airflow to the small air bag through the large air bag, and moves the piston rod upward through the air transmission pipe, so that the blades are opened by the opening rod, similar to opening an umbrella, so that the four-leaf opening and closing assembly is already opened before the nozzle sprays out the high-pressure airflow. In this way, it can be avoided that the mechanical inertia weakens the cleaning ability of the high-pressure airflow sprayed by the nozzle, so that the airflow sprayed by the nozzle can directly flow from the inner filter element into the outer filter element, and act on the outer filter element to clean the dust, effectively improving the cleaning force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0023] Figure 2 It is a top view of the opened four-leaf opening and closing device.

[0024] Figure 3 It is a side view of the four-leaf opening and closing device that has been opened.

[0025] Figure 4 It is a piston device below the four-leaf opening and closing device.

[0026] Figure numerals: 1. outer shell; 2. receiving plate; 3. air inlet pipe; 4. air outlet pipe; 51. inner filter element; 52. outer filter element; 6. four-leaf opening and closing assembly; 61. square plate; 62. blades; 63. torsion spring; 71. blowing pipe; 72. nozzle; 73. large air bag; 74. pulse valve; 81. small air bag; 82. air supply pipe; 83. piston rod; 84. tension spring; 85. opening rod; 86. safety valve; 91. dust storage box; 92. ash hopper; 93. ash discharge valve; 10. control panel; 11. dust shield. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are 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 making creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the utility model belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0028] Embodiment 1:

[0029] The utility model provides a smoke filtration and catalytic coordinated purification device, such as Figure 1-Figure 3 As shown, it includes an outer shell 1, in which a receiving plate 2 is fixedly installed, and the receiving plate 2 divides the inner space of the outer shell 1 into two parts. The space above the receiving plate 2 is a clean room, and the space below the receiving plate 2 is a purification room. The lower side of the outer shell 1 is connected with an air inlet pipe 3, and the gun smoke enters the purification room in the outer shell 1 from the air inlet pipe 3. The upper side of the outer shell 1 is connected with an air outlet pipe 4, and the air outlet pipe 4 is used to discharge the purified gas; the receiving plate 2 is suspended with a double-layer pleated filter cartridge, and the pleated filter cartridge includes an inner filter element 51 and an outer filter element 52. The inner filter element 51 is a hollow cylinder, and the inner filter element 51 is located inside the outer filter element 52. There is a hollow structure between the inner filter element 51 and the outer filter element 52, and the tops of the inner filter element 51 and the outer filter element 52 are connected to the receiving plate 2 to form a sealed top structure, and the vertical length of the inner filter element 51 is smaller than that of the outer filter element 52.

[0030] The filter material of the inner filter element 51 is made of metal oxide filtering material, preferably alumina; and the side wall of the inner filter element 51 is honeycomb-shaped, and the inner and outer surfaces of the inner filter element 51 are evenly coated with a catalyst. When it is necessary to remove carbon monoxide in the gun smoke, the catalyst is preferably hopcalite; when it is necessary to remove nitrogen oxides in the gun smoke, transition metal oxides-platinum-based are preferred.

[0031] Among them, a four-leaf opening and closing component 6 is arranged at the bottom of the pleated filter cartridge, the bottom of the outer filter element 52 is embedded with the four-leaf opening and closing component 6, and the four-leaf opening and closing component 6 is consistent with the bottom of the inner filter element 51 in the closed state.

[0032] The four-leaf opening and closing component 6 includes a square plate 61, blades 62 and a torsion spring 63. The square plate 61 is connected to the bottom of the outer filter element 52. The blades 62 are rotatably connected to the square plate 61. A torsion spring 63 is connected between the blades 62 and the square plate 61. The upper end of the blades 62 is arc-shaped, and when the blades 62 are in a gathered and closed state, the upper edge forms a circle that matches the bottom of the hollow cylinder of the inner filter element 51.

[0033] The outer shell 1 also includes a spray assembly, and the upper side of the outer shell 1 is provided with a spray assembly for cleaning the pleated filter cartridge 5 through airflow. The airflow blown out by the spray assembly enters the hollow cylinder of the inner filter element 51. The four-leaf opening and closing assembly 6 is opened under the action of the airflow of the spray assembly, so that the airflow enters from the inner filter element 51 into the outer filter element 52 and between the inner filter element 51, and the outer filter element 52 is blown in the reverse direction.

[0034] The spray assembly includes a spray pipe 71, which is arranged on the upper side of the outer shell 1. The spray pipe 71 is connected to a nozzle 72, and the nozzle 72 is located directly above the hollow cylinder of the inner filter element 51. The end of the spray pipe 71 away from the nozzle 72 is connected to an atmosphere bag 73, and a pulse valve 74 is installed on the side of the spray pipe 71 close to the atmosphere bag 73.

[0035] The control panel 10 is also included. The control panel 10 is electrically connected to the nozzle 72 and the pulse valve 74 . The control panel 10 is used to control the opening and closing of the pulse valve 74 and the spraying intensity of the nozzle 72 .

[0036] When the device is working, the gun smoke enters the purification room from the air inlet pipe 3. Under the interception effect of the outer filter element 52 of the pleated filter cartridge, the dust is captured on the outer wall of the outer filter element 52. The airflow passes through the outer filter element 52 to reach the inner filter element 51 (because the inner and outer surfaces of the inner filter element 51 are evenly coated with hopcalite catalyst and transition metal oxide-platinum base, the working principle of the hopcalite agent is based on the chemical reaction of the catalyst: when removing harmful gases such as carbon monoxide, the hopcalite agent converts them into harmless compounds by catalyzing the reaction between gas molecules. For example, carbon monoxide can be converted into carbon dioxide. This reaction occurs on the surface of the catalyst, and the metal oxides such as aluminum oxide play a catalytic role; and the transition metal oxide-platinum base can be used for the nitration of nitrogen oxides), thereby achieving full removal of carbon monoxide and nitrogen oxides. The purified airflow reaches the clean room through the upper opening of the inner filter element 51 and is discharged through the air outlet pipe 4.

[0037] Since the dust adsorbed on the outer surface of the outer filter element 52 will gradually thicken and increase the wind resistance, it is necessary to clean the dust on the outer surface of the outer filter element 52. The pulse valve 74 is started through the control panel 10, so that the high-pressure gas in the atmosphere bag 73 enters the spray pipe 71 and is sprayed out from the nozzle 72 to enter the inner filter element 51. Since the high-pressure airflow continuously sprayed by the spray chase will quickly fill the interior of the inner filter element 51, the internal pressure of the inner filter element 51 is greater than the external pressure, so that the four-leaf opening and closing component 6 at the bottom of the inner filter element 51 is fully opened, and the high-pressure gas enters between the outer filter element 52 and the inner filter element 51. Due to the structure of the nested pleated filter cartridge, the high-pressure gas can only go out from the aperture of the outer filter element 52, thereby blowing the outer filter element 52 in the opposite direction, so that a large amount of dust captured on the outer wall of the outer filter element 52 falls off after the cleaning effect; in addition, since a torsion spring 63 is connected between each leaf 62 of the four-leaf opening and closing component 6 and the square plate 61, after the high-pressure airflow flows out, the pressure inside and outside the inner filter element 51 is not much different, and the leaf 62 will automatically close under the reset force of the torsion spring 63 and return to the initial state. In this way, the polluted gas that has not been treated with carbon monoxide can be effectively prevented from entering the inner filter element 51.

[0038] Embodiment 2:

[0039] On the basis of Example 1, Figure 1 and Figure 4 As shown, it also includes a pre-opening component for opening the four-leaf opening and closing component 6 in advance, the pre-opening component includes a small air bag 81, the small air bag 81 is arranged on the blowing pipe 71, the small air bag 81 is connected to the air supply pipe 82, the air supply pipe 82 is slidably connected with a piston rod 83 on the side away from the small air bag 81, a tension spring 84 is connected between the piston rod 83 and the air supply pipe 82, the tension spring 84 is hinged with a support rod 85, the support rod 85 is hinged to the blade 62, the blowing pipe 71 is installed with a safety valve 86, the safety valve 86 is a spring-type safety valve, and the safety valve 86 is located between the small air bag 81 and the nozzle 72.

[0040] In order to prevent the four-leaf opening and closing component 6 from weakening the force of the jet airflow, the four-leaf opening and closing component 6 needs to be pre-opened. When the external filter element 52 is cleaned, the high-pressure airflow in the large air bag 73 enters the small air bag 81 through the jet pipe 71. Due to the obstruction of the safety valve 86, the high-pressure airflow cannot continue to flow from the jet pipe 71 into the nozzle 72, but will enter the air supply pipe 82 through the small air bag 81. After entering the air supply pipe 82, the high-pressure airflow accumulates at the piston rod 83 and gradually squeezes the piston rod 83 to move upward, so that the tension spring 84 is stretched, and the piston rod 83 moves upward so that the support rod 85 is The blades 62 are stretched open, thereby opening the four-leaf opening and closing assembly 6 in advance; after the piston rod 83 can no longer move, the high-pressure airflow in the small air bag 81 will accumulate at the safety valve 86. When the pressure reaches the preset value of the safety valve 86, the safety valve 86 is opened, and the high-pressure airflow enters the nozzle 72 through the spray pipe 71, and then enters the inner filter element 51. At this time, since the four-leaf opening and closing assembly 6 has been opened in advance, the high-pressure airflow will quickly enter between the inner filter element 51 and the outer filter element 52 through the opened four-leaf opening and closing assembly 6, and reversely blow the outer filter element 52 to achieve the cleaning of the outer filter element 52.

[0041] Embodiment 3:

[0042] Based on Example 2, see Figure 1 As shown, a dust collecting assembly for collecting dust is also included, and the dust collecting assembly includes a dust storage box 91, which is arranged below the outer shell 1, and an ash hopper 92 is arranged on the upper side of the dust storage box 91. The ash hopper 92 is funnel-shaped, and an ash discharge valve 93 is installed at the bottom of the ash hopper 92.

[0043] The sprayed dust falls into the ash hopper 92 and enters the dust storage box 91 through the ash discharge valve 93. The dust storage box 91 is a drawer-type structure, which is convenient for removing and cleaning the dust solid particles in the dust storage box 91.

[0044] In some embodiments, a dust shield 11 is further included. The dust shield 11 is arranged on one side of the outer shell 1 close to the air inlet pipe 3. The dust shield 11 can block part of the dust. When the gun smoke enters from the air inlet pipe 3, it is blocked by the dust shield 11. Part of the dust will be blocked due to inertial collision and directly fall into the ash hopper 92, and the remaining dust solid particles will be entrained by the gas into the purification chamber.

[0045] In some embodiments, the front of the smoke filtration and catalytic co-purification device is a pull-out cabinet structure, which is convenient for opening the working gap of the device to take out the pleated filter cartridge to clean the inner filter element 51, the outer filter element 52 and the four-leaf opening and closing assembly 6 and replace them as necessary.

[0046] In some embodiments, the edges of the pull-out cabinet and the drawer and the contact points with the edges are made of materials with good adhesion, which can prevent gas from escaping during the operation of the device.

[0047] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A smoke filtration and catalytic coordinated purification device, comprising a housing (1), a receiving plate (2) is arranged inside the housing (1), an air inlet pipe (3) is connected to the lower side of the housing (1), and an air outlet pipe (4) is connected to the upper side of the housing (1); characterized in that: The receiving plate (2) is suspended with a pleated filter cartridge, the pleated filter cartridge being a double-layer structure, comprising an inner filter element (51) and an outer filter element (52), the inner filter element (51) being located inside the outer filter element (52), and the inner filter element (51) having a vertical length shorter than that of the outer filter element (52), the inner filter element (51) being made of a filter material of metal oxide, and having a honeycomb-shaped side wall, and having inner and outer surfaces uniformly coated with a catalyst for removing smoke.

2. A smoke filtration and catalytic coordinated purification device according to claim 1, characterized in that: It also includes a four-leaf opening and closing component (6), the four-leaf opening and closing component (6) is arranged at the bottom of the pleated filter cartridge, the bottom of the outer filter element (52) is embedded with the four-leaf opening and closing component (6), and the four-leaf opening and closing component (6) is matched with the bottom of the inner filter element (51) in the closed state, and a spray component for cleaning the pleated filter cartridge through airflow is arranged on the upper side of the outer shell (1), and the airflow blown out by the spray component enters the inner filter element (51).

3. A smoke filtration and catalytic coordinated purification device according to claim 2, characterized in that: The four-leaf opening and closing component (6) comprises a square plate (61), blades (62) and a torsion spring (63); the square plate (61) is connected to the bottom of the outer filter element (52); the blades (62) are rotatably connected to the square plate (61); and a torsion spring (63) is connected between the blades (62) and the square plate (61).

4. The smoke filtration and catalytic coordinated purification device according to claim 3 is characterized in that: The spray assembly comprises a spray pipe (71), the spray pipe (71) is arranged to penetrate the upper side of the shell (1), the spray pipe (71) is connected to a nozzle (72), the nozzle (72) is located directly above the inner filter element (51), the end of the spray pipe (71) away from the nozzle (72) is connected to an atmosphere bag (73), and a pulse valve (74) is installed on the side of the spray pipe (71) close to the atmosphere bag (73).

5. The smoke filtration and catalytic coordinated purification device according to claim 4, characterized in that: The invention also comprises a pre-opening component for opening the four-leaf opening and closing component (6) in advance, wherein the pre-opening component comprises a small air bag (81), wherein the small air bag (81) is arranged on the blowing pipe (71), wherein the small air bag (81) is connected to an air supply pipe (82), wherein a piston rod (83) is slidably connected to the air supply pipe (82) on a side away from the small air bag (81), wherein a tension spring (84) is connected between the piston rod (83) and the air supply pipe (82), wherein the tension spring (84) is hingedly connected to a support rod (85), wherein the support rod (85) is hingedly connected to the blade (62), and wherein a safety valve (86) is installed on the blowing pipe (71), wherein the safety valve (86) is located between the small air bag (81) and the nozzle (72).

6. The smoke filtration and catalytic coordinated purification device according to claim 1, characterized in that: It also includes a dust collecting assembly for collecting dust, the dust collecting assembly including a dust storage box (91), the dust storage box (91) is arranged below the housing (1), an ash hopper (92) is arranged on the upper side of the dust storage box (91), the ash hopper (92) is funnel-shaped, and an ash discharge valve (93) is installed at the bottom of the ash hopper (92).

7. The smoke filtration and catalytic coordinated purification device according to claim 4, characterized in that: It also includes a control panel (10), wherein the control panel (10) is electrically connected to the nozzle (72) and the pulse valve (74).

8. The smoke filtration and catalytic coordinated purification device according to claim 1, characterized in that: It also includes a dust shield (11), which is arranged on a side of the housing (1) close to the air inlet pipe (3).

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