Tailing collecting bag type dust collector for preparing zinc oxide

Abstract

The utility model discloses a tailing collecting bag type dust collector for preparing zinc oxide, which comprises a dust collection box, an airflow adjusting mechanism, a cloth bag dust collection device and bin dividing plates, a plurality of bin dividing plates are arranged in the dust collection box, the cloth bag dust collection device is arranged between adjacent bin dividing plates, and the airflow adjusting mechanism is arranged below the cloth bag dust collection device; the cloth bag dust removal device comprises a cloth bag shaping net column, a two-section dust removal device and a partition plate, the partition plate is connected to the inner wall of the dust removal box and the bin dividing plate in a sealed mode, a plurality of air holes are formed in the partition plate, and the cloth bag shaping net column is arranged on the air holes and sleeved with a filter bag; the tailing collecting bag type dust collector for preparing the zinc oxide is simple in structure, convenient and practical, the filtering efficiency is improved by prolonging the filtering bag, and the situation that the fixing position of a cloth bag is pulled and damaged due to the fact that dust attached to the filtering bag is too heavy is avoided by performing secondary fixing through the two-section dust collection device.

Description

Technical Field

[0001] The utility model belongs to the field of bag dust removal, and in particular relates to a bag dust collector for collecting tailings used in preparing zinc oxide. Background Art

[0002] The bag filter is a dry dust filter. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt, and uses the filtering effect of fiber fabric to filter the dust-containing gas. When the dust-containing gas enters the bag filter, the large particles and heavy dust settle down due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified.

[0003] In the harmless treatment and resource utilization of solid waste, industrial waste residue and dust to prepare zinc oxide, the zinc-containing material is added with a certain amount of rinsing gas ash, oxide slag, electric furnace ash, lime powder, anthracite and water and then calcined. The calcination is carried out in a rotary kiln. The dust generated by the calcination is collected by a bag filter and then transported to the rotary kiln for calcination again through a reflux scraper. The bag filter needs to filter out 60 to 200 tons of dust every day. Such a large amount of dust also increases the requirements for the bag filter. The bag of the existing large bag filter is 7-8 meters. This traditional filter needs to increase its design volume, so that the floor area of ​​the bag filter needs to be correspondingly larger, and the corresponding reflux scraper is also correspondingly extended. Because the reflux scraper needs to be used to recover the dust, the bag filter can only be extended in design. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a bag dust collector for collecting tailings for preparing zinc oxide, which has a simple structure, is convenient and practical, improves the filtration efficiency by extending the filter bag, and is fixed twice by a two-stage dust removal device to avoid pulling damage at the fixing point of the bag due to excessive dust attached to the filter bag.

[0005] A bag dust collector for collecting tailings for preparing zinc oxide, comprising a dust removal box, an airflow regulating mechanism, a bag dust removal device and a compartment plate, wherein a plurality of the compartment plates are arranged in the dust removal box, the bag dust removal device is arranged between adjacent compartment plates, and the airflow regulating mechanism is arranged below the bag dust removal device; the bag dust removal device comprises a bag shaping net column, a two-stage dust removal device and a partition plate, the partition plate is sealed and connected to the inner wall of the dust removal box and the compartment plate, a plurality of air holes are opened on the partition plate, the bag shaping net column is arranged on the air holes and is sleeved with a filter bag, and the two-stage dust removal device is arranged above the partition plate and extends into the bag shaping net column.

[0006] Preferably, the two-stage dust removal device includes a sealing ring edge, a two-stage sealing plate, a two-stage tube, a partition sealing plate and a clamping ring. The sealing ring edge is arranged above the partition plate and connected to the inner wall of the dust removal box and the compartment plate. The two-stage sealing plate is sealingly connected to the sealing ring edge. One end of the two-stage tube is connected to the two-stage sealing plate and the other end extends to the bag shaping mesh column and passes through the partition sealing plate. The clamping ring is sleeved on the partition sealing plate and fixes the filter bag.

[0007] Preferably, a connecting hole is provided on the second-stage sealing plate, a solenoid valve is provided on the connecting hole, and a pressure sensor is provided on the second-stage sealing plate.

[0008] Preferably, one end of the two-section pipe penetrating the separation sealing plate is provided with a bell mouth.

[0009] Preferably, the airflow adjustment mechanism includes a guide vane, an L-shaped adjustment rod, an adjustment rod, a connecting rod and a cylinder, a plurality of the connecting rods are connected to the adjustment rod, one end of the adjustment rod is movably connected to one end of the L-shaped adjustment rod, the other end of the L-shaped adjustment rod passes through the outer wall of the dust collector box and is connected to the guide vane, one end of the guide vane is movably connected to the inner wall of the dust collector box, a plurality of the cylinders are installed on the dust collector box and the piston rod is connected to the adjustment rod.

[0010] Preferably, the dust removal box is provided with a plurality of maintenance doors.

[0011] Beneficial effects:

[0012] (1) The utility model discloses a bag-type dust collector for collecting tailings for preparing zinc oxide, which has a simple structure, is convenient and practical. By extending the filter bag, the filtration efficiency is improved, and a second fixation is performed through a two-stage dust removal device to prevent the filter bag from being pulled and damaged at the fixing part of the bag due to excessive dust attached to the bag.

[0013] (2) The utility model is a bag-type dust collector for collecting tailings for preparing zinc oxide. The filter bag is divided into two filtering areas by a two-stage dust removal device, thereby avoiding the phenomenon of unclean dust discharge at the bottom due to the filter bag being too long, and at the same time ensuring the dust absorption efficiency of the end of the filter bag away from the negative pressure port.

[0014] (3) The utility model provides a bag dust collector for collecting tailings for preparing zinc oxide. The filter area is switched by an airflow regulating mechanism, so that some bag dust collectors can perform separate dust removal work to ensure the overall filtering efficiency of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a bag filter;

[0016] Figure 2 It is a partial schematic diagram of a bag filter;

[0017] Figure 3 It is a structural schematic diagram of a two-stage dust removal device;

[0018] Figure 4 is a structural schematic diagram of an airflow regulating mechanism;

[0019] 1-dust removal box, 2-air flow adjustment mechanism, 21-guide vane, 22-L-shaped adjustment rod, 23-adjustment rod, 24-connecting rod, 3-bag dust removal device, 31-bag shaping net column, 32-two-stage dust removal device, 33-partition plate, 34-sealing ring edge, 35-two-stage sealing plate, 36-connecting hole, 37-solenoid valve, 38-two-stage pipe, 39-partition sealing plate, 310-bell mouth, 4-compartment plate, 5-maintenance door. DETAILED DESCRIPTION

[0020] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] like Figures 1 to 4As shown; a bag dust collector for collecting tailings for preparing zinc oxide, comprising a dust removal box 1, an airflow regulating mechanism 2, a bag dust removal device 3 and a compartment plate 4, a plurality of said compartment plates 4 are arranged in the dust removal box 1, the bag dust removal device 3 is arranged between adjacent compartment plates 4, and the airflow regulating mechanism 2 is arranged below the bag dust removal device 3; the bag dust removal device 3 comprises a bag shaping net column 31, a second-stage dust removal device 32 and a partition plate 33, and the partition plate 33 is sealed and connected to the inner wall of the dust removal box 1 and the compartment plate 4 The partition plate 33 is provided with a plurality of air holes, the bag shaping net column 31 is arranged on the air holes and is sleeved with a filter bag, the second-stage dust removal device 32 is arranged above the partition plate 33 and extends into the bag shaping net column 31; the second-stage dust removal device 32 includes a sealing ring edge 34, a second-stage sealing plate 35, a second-stage pipe 38, a partition sealing plate 39 and a clamping ring, the sealing ring edge 34 is arranged above the partition plate 33 and connected to the inner wall of the dust removal box 1 and the compartment plate 4, the second-stage sealing plate 35 is sealed and connected to the sealing ring On the edge 34, one end of the second-stage pipe 38 is connected to the second-stage sealing plate 35 and the other end extends to the bag shaping net column 31 and passes through the partition sealing plate 39. The clamp is set on the partition sealing plate 39 and fixes the filter bag; the second-stage sealing plate 35 is provided with a connecting hole 36, and the connecting hole 36 is provided with a solenoid valve 37. The second-stage sealing plate 35 is provided with a pressure sensor; the second-stage pipe 38 passes through the partition sealing plate 39. One end is provided with a bell mouth 310; the airflow adjustment mechanism 2 includes It includes a guide vane 21, an L-shaped adjusting rod 22, an adjusting rod 23, a connecting rod 24 and an oil cylinder. Several connecting rods 24 are connected to the adjusting rod 23. One end of the adjusting rod 23 is movably connected to one end of the L-shaped adjusting rod 22. The other end of the L-shaped adjusting rod 22 penetrates the outer wall of the dust removal box 1 and is connected to the guide vane 21. One end of the guide vane 21 is movably connected to the inner wall of the dust removal box 1. Several oil cylinders are installed on the dust removal box 1 and the piston rods are connected to the adjusting rod 23. Several maintenance doors 5 are provided on the dust removal box 1.

[0023] Among them, the dust box 1 is connected with an air inlet, an air outlet and a pulse dust collector, which are all existing technologies. The dust box 1, the bag dust removal device 3 and the compartment plate 4 are existing structures or technologies, which will not be described in detail here; specifically, the negative pressure dust absorption area is divided into two upper and lower negative pressure areas by the sealing ring edge 34 and the two-stage sealing plate 35. For the convenience of understanding, these two areas are named as the upper negative pressure area and the lower negative pressure area respectively. At the same time, the filter bag is divided into two upper and lower dust absorption areas by the separation sealing plate 39. For the convenience of understanding, these two areas are named as the upper dust absorption area and the lower dust absorption area respectively. The upper dust absorption area of ​​the filter bag is connected with the lower negative pressure area through the air holes on the separation plate 33, and the lower dust absorption area of ​​the filter bag is connected with the upper negative pressure area through the two-stage pipe 38, so that the upper and lower areas of the filter bag can be separated to absorb dust and can be discharged separately at the same time; when there is too much dust attached to the lower dust absorption area of ​​the filter bag, the negative pressure in the upper negative pressure area will increase. At this time, the pressure gauge is too large, and then the solenoid valve 37 is opened, The upper and lower negative pressure areas are connected to avoid damage to the filter bags due to excessive negative pressure. It is mainly designed for a set of negative pressure pipelines to supply multiple bag dust removal devices 3; when discharging ash, the lower ash suction area controlled by the two-stage dust removal device 32 can be discharged separately, because the dust attached to it is faster than the upper ash suction area, and the airflow adjustment mechanism 2 can be opened at the same time to close the area between adjacent partition plates 4, so as to facilitate the bag dust removal device 3 between adjacent partition plates 4 to carry out ash discharge processing; when the airflow adjustment mechanism 2 is working, the adjustment rod 23 and the connecting rod 24 are driven to move by the oil cylinder, and then the connecting rod 24 drives one end of the L-shaped adjustment rod 22 to rotate around the other end, so that the other end of the L-shaped adjustment rod 22 drives the guide vane 21 to rotate, and after several guide vanes 21 rotate, the adjacent guide vanes 21 will contact to achieve a sealing effect; by setting a bell mouth 310 at one end of the two-stage pipe 38, the effect of diffusing negative pressure adsorption is played to improve the exhaust efficiency; the filter bag is maintained or replaced through the maintenance door 5.

[0024] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modification and substitution of the present invention is also within the scope of the present invention. Therefore, the equivalent transformation and modification made without departing from the spirit and scope of the present invention are all within the scope of the present invention.

Claims

1. A bag filter for collecting tailings for preparing zinc oxide, characterized in that: The invention comprises a dust removal box (1), an airflow regulating mechanism (2), a bag dust removal device (3) and a compartment plate (4); a plurality of compartment plates (4) are arranged in the dust removal box (1); the bag dust removal device (3) is arranged between adjacent compartment plates (4); and the airflow regulating mechanism (2) is arranged below the bag dust removal device (3); the bag dust removal device (3) comprises a bag shaping net column (31), a two-stage dust removal device (32) and a partition plate (33); the partition plate (33) is sealed and connected to the inner wall of the dust removal box (1) and the compartment plate (4); a plurality of air holes are opened on the partition plate (33); the bag shaping net column (31) is arranged on the air holes and is sleeved with a filter bag; and the two-stage dust removal device (32) is arranged above the partition plate (33) and extends into the bag shaping net column (31).

2. A bag filter for collecting tailings for preparing zinc oxide as claimed in claim 1, characterized in that: The two-stage dust removal device (32) comprises a sealing ring edge (34), a two-stage sealing plate (35), a two-stage pipe (38), a partition sealing plate (39) and a clamping ring. The sealing ring edge (34) is arranged above the partition plate (33) and connected to the inner wall of the dust removal box (1) and the compartment plate (4). The two-stage sealing plate (35) is sealed and connected to the sealing ring edge (34). One end of the two-stage pipe (38) is connected to the two-stage sealing plate (35) and the other end extends to the bag shaping net column (31) and passes through the partition sealing plate (39). The clamping ring is sleeved on the partition sealing plate (39) and fixes the filter bag.

3. A bag filter for collecting tailings for preparing zinc oxide as claimed in claim 2, characterized in that: The second-stage sealing plate (35) is provided with a communication hole (36), the communication hole (36) is provided with a solenoid valve (37), and the second-stage sealing plate (35) is provided with a pressure sensor.

4. A bag filter for collecting tailings for preparing zinc oxide as claimed in claim 3, characterized in that: One end of the two-section pipe (38) that passes through the partition sealing plate (39) is provided with a bell mouth (310).

5. A bag filter for collecting tailings for preparing zinc oxide as claimed in claim 2 or 4, characterized in that: The airflow adjustment mechanism (2) comprises a guide vane (21), an L-shaped adjustment rod (22), an adjustment rod (23), a connecting rod (24) and an oil cylinder. A plurality of the connecting rods (24) are connected to the adjustment rod (23). One end of the adjustment rod (23) is movably connected to one end of the L-shaped adjustment rod (22). The other end of the L-shaped adjustment rod (22) penetrates the outer wall of the dust removal box (1) and is connected to the guide vane (21). One end of the guide vane (21) is movably connected to the inner wall of the dust removal box (1). A plurality of the oil cylinders are installed on the dust removal box (1) and the piston rods are connected to the adjustment rods (23).

6. A bag filter for collecting tailings for preparing zinc oxide as claimed in claim 5, characterized in that: The dust removal box (1) is provided with a plurality of maintenance doors (5).

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