Energy-saving type dust micro-power grading purification and recovery device

Abstract

The utility model discloses an energy-saving type dust micro-power grading purification and recovery device which is formed by combining a dust particle settling box (4), a filtering dust removal purification box (5), a dust discharge port (7), a dust hopper (8), an electric dust discharge valve (9) and supporting legs (10). A dust-containing airflow inlet (1) is formed in the upper part of the dust particle settling box (4), and an air supply outlet (2) is formed in the outer side of the lower part of the dust particle settling box (4); a purified gas outlet (3) is formed in the top of the dust particle settling box (4), and a composite filtering assembly (6) is arranged on the upper portion in the dust particle settling box (4). According to the utility model, the combined action of multiple acting force fields such as gravity, inertia force, collision action, Brown diffusion, coagulation action and retention action is utilized to realize micro-power sedimentation, filtration, dust removal and graded purification of dust of the mine crushing system, and the dust removal device has the advantages of high dust removal efficiency, low energy consumption, low operating cost, simple structure and convenience in installation; the dust removal efficiency is greatly improved, the comprehensive dust control and removal effect is remarkable, and the energy-saving effect is remarkable.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine environmental protection equipment, and particularly relates to a micro-power dust removal, classification, purification and recovery device, which is especially suitable for the treatment of mine crushing dust. Background Technique

[0002] During the ore crushing production process, a large amount of dust is often generated, which seriously pollutes the area and the surrounding environment. If these dusts cannot be effectively controlled and purified, under the disturbance of the ambient air flow at the operation post, they will be suspended in the air environment for a long time. This not only pollutes the operation environment, consumes ore raw materials, accelerates equipment wear, but also seriously threatens the physical and mental health of the operation personnel.

[0003] Dust generation during ore crushing has always been a typical dust source in the mine production process. At present, for dust generation during crushing, technical solutions such as wet operation, spray dust suppression, wet dust collectors or dry dust collectors are generally adopted. Through further analysis, the above technical solutions have the following deficiencies:

[0004] 1) Wet operation only plays a role in reducing the amount of dust generated during the crushing operation, and cannot completely inhibit the generation of dust;

[0005] 2) The water mist sprayed by the spray dust suppression device cannot completely cover the dust generated in the crushing space. At the same time, the contact time between the water mist and the space dust is short, and single spray dust suppression is difficult to completely purify the crushing dust;

[0006] 3) The use of traditional wet dust collectors or dry dust collectors not only has large engineering investment, high energy consumption, and great difficulty in operation and maintenance, but also the traditional wet or dry dust collection technology only considers dust removal and does not consider the recovery of materials. Summary of the Invention

[0007] The purpose of the utility model is to provide an energy-saving dust micro-power classification purification and recovery device with high dust removal efficiency, low energy consumption, low operation cost, and capable of realizing on-demand ventilation and dust removal according to the change of air volume, aiming at the problems of large engineering investment, high energy consumption, great difficulty in operation and maintenance, and low dust removal efficiency existing in the treatment of mine crushing dust by traditional spray dust suppression, wet dust collectors and dry dust collectors.

[0008] To achieve the above object of the utility model, the utility model provides an energy-saving dust micro-power classification purification and recovery device, which adopts the following technical solutions:

[0009] The utility model relates to an energy-saving dust micro-power classification purification and recovery device, which is composed of a dust particle sedimentation tank, a filter dust removal and purification tank, a dust discharge port, a hopper, an electric dust discharge valve and legs; an air flow inlet containing dust is arranged at the upper part of the dust particle sedimentation tank, and an air supply port is arranged at the outer side of the lower part of the dust particle sedimentation tank; the filter dust removal and purification tank is located beside the dust particle sedimentation tank, and the middle and lower parts of the filter dust removal and purification tank and the dust particle sedimentation tank are connected; a purified gas outlet is arranged at the top of the dust particle sedimentation tank, and a composite filter component is arranged at the upper part in the dust particle sedimentation tank; the dust discharge port and the hopper are located at the lower parts of the dust particle sedimentation tank and the filter dust removal and purification tank, and the electric dust discharge valve is located at the bottom of the hopper; the dust particle sedimentation tank, the filter dust removal and purification tank, the dust discharge port and the hopper are supported on the legs. When the dust airflow generated during the operation of the crushing system enters from the air flow inlet containing dust, due to its own gravity, large particle dust first falls into the dust discharge port and enters the hopper in the sedimentation chamber of the dust particle sedimentation tank. Under the promotion and action of the air flow at the air supply port, small particle dust contacts, collides and adheres to each other, increasing the dust particle size and weight, and part of the dust also slowly settles down; the dust that has not settled continues to flow to the filter dust removal and purification tank, and the fine dust is purified under the filtration of the composite filter component, and the purified clean air flow is discharged through the purified gas outlet.

[0010] The energy-saving dust micro-power classification purification and recovery device of the utility model further comprises a PLC control system; dust concentration sensors are respectively arranged at the air flow inlet containing dust and the purified gas outlet; the air supply port is connected to a air supply fan through a pipeline, and the air flow inlet containing dust is connected to a dust removal fan through a pipeline; the PLC control system is connected to the dust concentration sensors, the air supply fan and the dust removal fan to form a purification and recovery device control system, and the air supply fan and the dust removal fan are automatically controlled through the PLC control system, and ventilation and dust removal are carried out as required according to the change of air volume.

[0011] Preferably, the composite filter component is composed of a plurality of film-coated filter cartridges arranged; the diameter of the film-coated filter cartridge is 300-350mm, and the interval between adjacent film-coated filter cartridges is 80-100mm.

[0012] Preferably, the ratio of the height, length and width of the inner space of the sedimentation chamber of the dust particle sedimentation tank is set to 2:(0.9-1.1):(0.48-0.52), and 2:1:0.5 is preferred.

[0013] Preferably, the inner cross-sectional area of the filter dust removal and purification tank is equal to the inner cross-sectional area of the dust particle sedimentation tank.

[0014] In the filtering and dust-removing purification box, to ensure that the dust that fails to settle in the settling chamber of the dust particle settling box can completely adhere to the composite filter component, a reasonable filtration air velocity should be ensured. According to the experimental and on-site application test results, the filtration air velocity is taken as 0.8 - 1.0 m / s.

[0015] The energy-saving dust micro-power classification purification and recovery device of the present utility model adopts a combined high-efficiency energy-saving dust removal method of micro-power sedimentation and filtration dust removal classification purification, and the dust purification effect is remarkable. Specifically, it has the following beneficial effects:

[0016] 1) Adopting a combined dust removal and purification system of micro-power sedimentation and filtration dust removal classification purification greatly improves the dust removal efficiency, the comprehensive dust control effect is remarkable, and the energy-saving effect is remarkable.

[0017] 2) In the settling chamber of the dust particle settling box, large particle dust and part of the fine particle dust achieve natural sedimentation under the action of the micro-power air flow provided by the air supply outlet, greatly reducing the operating energy consumption of the dust removal system.

[0018] 3) In the purification chamber of the filtering and dust-removing purification box, part of the fine dust that fails to settle naturally is purified through the filter component, greatly reducing the load of filtering and dust removal.

[0019] 4) The PLC control system performs frequency conversion adjustment on the air supply fan and the dust removal fan to achieve ventilation and dust removal on demand.

[0020] 5) Adopting micro-power dust removal, using the power generated by the air flow movement to achieve an alternating cycle of negative pressure and positive pressure, and using the gas pressure, the dust-containing air flow undergoes processes such as inhibition, mitigation, and knocking off, so that the dust is captured in the dust collector. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of an energy-saving dust micro-power classification purification and recovery device of the present utility model.

[0022] Figure 2 It is an arrangement diagram of a composite filter component designed for an energy-saving dust micro-power classification purification and recovery device of the present utility model.

[0023] The reference numerals are: 1 - dust-containing air inlet; 2 - air supply outlet; 3 - purified gas outlet; 4 - dust particle settling area; 5 - filtering and dust-removing purification area; 6 - composite filter component; 7 - ash discharge port; 8 - ash hopper; 9 - electric ash discharge valve; 10 - support leg; 11 - dust concentration sensor; 12 - membrane filter cartridge. Detailed Embodiment

[0024] To further describe the present utility model, the following provides a more detailed description of an energy-saving dust micro-power classification purification and recovery device of the present utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0025] As can be seen from Figure 1 the structural schematic diagram of an energy-saving dust micro-power classification purification and recovery device of the present utility model shown, an energy-saving dust micro-power classification purification and recovery device of the present utility model is composed of a dust particle sedimentation tank 4, a filter dust removal and purification tank 5, a dust discharge port 7, a dust hopper 8, an electric dust discharge valve 9, legs 10 and a PLC control system. The ratio of the height, length and width of the space inside the dust particle sedimentation tank 4 is set to 2:1:0.5, and the indoor cross-sectional area of the filter dust removal and purification tank 5 is equal to the indoor cross-sectional area of the dust particle sedimentation tank 4. A dust-containing gas inlet 1 is provided at the upper part of the dust particle sedimentation tank 4, and an air supply port 2 is provided on the outer side of the lower part of the dust particle sedimentation tank 4; the filter dust removal and purification tank 5 is located beside the dust particle sedimentation tank 4, and the middle and lower parts of the filter dust removal and purification tank 5 and the dust particle sedimentation tank 4 are connected to form a dust-containing gas flow channel after micro-power sedimentation and dust removal; a purified gas outlet 3 is provided at the top of the dust particle sedimentation tank 4, and a composite filter assembly 6 is provided in the upper part of the dust particle sedimentation tank 4. The composite filter assembly 6 is composed of a plurality of film-coated filter cartridges 11 arranged; the diameter of the film-coated filter cartridge 11 is 300-350 mm, and the interval between adjacent film-coated filter cartridges 11 is 80-100 mm. The dust discharge port 7 and the dust hopper 8 are located at the lower parts of the dust particle sedimentation tank 4 and the filter dust removal and purification tank 5, and the electric dust discharge valve 9 is located at the bottom of the dust hopper 8; the dust particle sedimentation tank 4, the filter dust removal and purification tank 5, the dust discharge port 7 and the dust hopper 8 are supported on the legs 10; dust concentration sensors are respectively provided at the dust-containing gas inlet 1 and the purified gas outlet 3, the air supply port 2 is connected to a blower through a pipeline, and the dust-containing gas inlet 1 is connected to a dust removal fan through a pipeline; the PLC control system is connected to the dust concentration sensors, the blower and the dust removal fan to form a purification and recovery device control system, and the automatic control of the blower and the dust removal fan and the on-demand ventilation and dust removal according to the change of the air volume are realized through the PLC control system.

[0026] In the embodiment, an energy-saving dust micro-power classification purification and recovery device of the present utility model is used for dust treatment in the crushing system of a concentrator. After the dust-laden air flow generated during the operation of the crushing system enters from the dust-laden air inlet 1, due to its own gravity, large-particle dust first falls by itself into the ash discharge port 7 in the settling chamber of the dust particle settling box 4 and enters the ash hopper 8. Under the pushing and action of the air flow from the air supply port 2, small-particle dust contacts, collides, and adheres to each other, increasing the dust particle size and weight, and part of the dust also slowly settles; the dust that has not achieved settlement continues to flow into the purification chamber of the filter dust purification box 5, and the fine dust is purified under the filtration of the composite filter component 6. The purified clean air flow is discharged through the air outlet 3.

[0027] An energy-saving dust micro-power classification purification and recovery device of the present utility model is a special equipment developed for micro-power classification purification of dust in the mine crushing system by the combined action of multiple force fields such as gravity, inertial force, collision action, Brownian diffusion, coagulation action, and retention action.

[0028] The cross-sectional area S of the settling chamber of the dust particle settling box 4 沉降 is determined according to the dust-laden air flow rate V 尘 . Generally, the inlet air velocity of the dust-laden air flow is taken as 10 m / s, and S 沉降 = V 尘 / 10. In order to effectively achieve the settlement of large-particle dust in the settling chamber of the dust particle settling box 4, the ratio of the spatial dimensions of height, length, and width in the settling chamber of the dust particle settling box 4 is set to 2:1:0.5. The air velocity of the air supply port 2 is also one of the factors affecting the micro-power classification purification effect. The greater the air velocity, the better the classification purification effect, but at the same time, it also causes an increase in the horizontal displacement of dust particles and an increase in the overall size of the dust removal equipment. The movement direction of the dust-laden air flow in the dust particle settlement area 4 is a parabolic-like movement downward from the dust-laden air inlet 1. After multiple comparative experiments, when the air velocity of the air supply port 2 is set to the same as the inlet air velocity of the dust-laden air flow, which is 10 m / s, it can not only ensure a good classification purification effect but also prevent the dust collector from being too large. The cross-sectional area S of the filter dust purification area 5 净化 = S 沉降 , and the movement direction of the dust-laden air flow is from the bottom to the top air outlet 3.

[0029] On the premise of the treatment air volume (Q = 10000 m 3 / h) and the filtration air velocity (V = 1.0 m / min), the actual implementation effect of an energy-saving dust micro-power classification purification and recovery device of the present utility model is analyzed and compared, and its various index parameters are as follows:

[0030] (1) Operating air volume: 8000 - 12000 m 3 / h

[0031] (2) Dust removal efficiency: ≥99.5%

[0032] (3) Air leakage rate: <5%

[0033] (4) Resistance of the dust collector: 1500 - 1700 Pa.

[0034] While the resistance of a conventional bag dust collector is as high as over 2500 Pa, and at the same time, the amount of filter components of an energy-saving dust micro-power classification purification and recovery device of the present utility model is reduced by half compared with that of a conventional bag dust collector. Therefore, this dust collector not only reduces the one-time investment cost and energy consumption, but also greatly reduces the future maintenance cost, and its economic performance is far superior to that of a conventional bag dust collector.

[0035] It should be noted that in this article, terms such as upper, middle, and lower-middle are for the convenience of description, and the "middle" does not necessarily mean the exact middle; relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving dust micro-power graded purification and recovery device, characterized by: It is composed of a dust particle settling box (4), a filtering dust removal and purification box (5), an ash discharge port (7), an ash hopper (8), an electric ash discharge valve (9) and a support leg (10); a dust-containing air flow inlet (1) is provided at the upper part of the dust particle settling box (4), and an air supply port (2) is provided at the outer side of the lower part of the dust particle settling box (4); the filtering dust removal and purification box (5) is located beside the dust particle settling box (4), and the filtering dust removal and purification box (5) and the dust particle settling box (4) are located in the middle and lower parts. The dust particle settling box (4) and the filtration dust purification box (5) are connected; a purified gas outlet (3) is provided at the top of the dust particle settling box (4); a composite filter assembly (6) is provided at the upper part of the dust particle settling box (4); the ash discharge port (7) and the ash hopper (8) are located at the lower part of the dust particle settling box (4) and the filtration dust purification box (5); the electric ash discharge valve (9) is located at the bottom of the ash hopper (8); the dust particle settling box (4), the filtration dust purification box (5), the ash discharge port (7) and the ash hopper (8) are supported on supporting legs (10).

2. An energy-saving dust micro-power graded purification and recovery device as claimed in claim 1, characterized in that: It also includes a PLC control system; dust concentration sensors are respectively arranged at the dust-containing air flow inlet (1) and the purified gas outlet (3); the air supply port (2) is connected to the air supply fan through a pipeline, and the dust-containing air flow inlet (1) is connected to the dust removal fan through a pipeline; the PLC control system is connected with the dust concentration sensor, the air supply fan, and the dust removal fan to form a purification and recovery device control system.

3. An energy-saving dust micro-power graded purification and recovery device as claimed in claim 1, characterized in that: The composite filter assembly (6) is composed of a plurality of membrane filter cartridges (11) arranged in an array.

4. An energy-saving dust micro-power graded purification and recovery device as claimed in claim 3, characterized in that: The diameter of the membrane filter cartridge (11) is 300-350 mm, and the interval between adjacent membrane filter cartridges (11) is 80-100 mm.

5. The energy-saving dust micro-power graded purification and recovery device according to claim 1, characterized in that: The ratio of the height, length and width of the indoor space of the dust particle settling box (4) is set to 2:(0.9-1.1):(0.48-0.52).

6. An energy-saving dust micro-power graded purification and recovery device as claimed in claim 2, characterized in that: The composite filter assembly (6) is composed of a plurality of membrane filter cartridges (11) arranged in an array; the diameter of the membrane filter cartridge (11) is 300-350 mm, and the interval between adjacent membrane filter cartridges (11) is 80-100 mm; the height, length and width ratio of the space inside the dust particle settling box (4) is set to 2:1:0.

5.

7. An energy-saving dust micro-power graded purification and recovery device as claimed in claim 6, characterized in that: The indoor cross-sectional area of ​​the filtering dust removal purification box (5) is equal to the indoor cross-sectional area of ​​the dust particle settling box (4).

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