Dust fall device for non-metal mine production and processing workshop

Abstract

The utility model relates to the technical field of dust falling in non-metal mine production, and particularly discloses a dust falling device for a non-metal mine production processing workshop, which comprises a bottom plate and a processing workshop body arranged on one side of the bottom plate, and a dust falling mechanism is arranged at the top of the bottom plate; the dust falling mechanism comprises a dust removal box fixedly mounted at the top of the bottom plate through supporting legs and a water tank arranged behind the dust removal box and fixedly mounted at the top of the bottom plate, the top of the dust removal box sequentially communicates with an air outlet pipe and a fixed cylinder from left to right, and a spraying pipe is fixedly mounted at the top end in the fixed cylinder; by means of the mode that active atomization dust falling and passive efficient dust removal are combined, the complex environment with multiple dust production points in a non-metal mine machining workshop is accurately dealt with, the dust falling device has the advantages of being high in dust falling efficiency, low in energy consumption, convenient and fast to maintain and the like, the workshop operation environment is effectively improved, dust pollution is reduced, and the environment protection effect is good. The environmental protection and safety requirements of industrial production are met.

Description

Technical Field

[0001] This utility model relates to the field of dust suppression technology in non-metallic mining production, and specifically discloses a dust suppression device for use in non-metallic mining production and processing workshops. Background Technology

[0002] In the mining and processing of non-metallic minerals (such as limestone, quartz sand, and gypsum), crushing, screening, and conveying processes generate large amounts of dust. This dust not only reduces visibility in workshops and accelerates equipment wear, but also causes occupational health problems such as silicosis among workers. Furthermore, fine particulate matter (PM2.5 / PM10) disperses into the external environment, easily causing air pollution. Therefore, dust control in mining processing workshops is a core requirement for safe production and environmental compliance.

[0003] Currently, traditional dust suppression methods in mining processing workshops mainly employ single spray dust suppression or mechanical dust collection devices. Spray dust suppression involves directly spraying water mist through spray pipes within the workshop, but its coverage is limited and its efficiency in capturing suspended dust is low. While mechanical dust collection devices can collect dust-laden air through negative pressure, they generally suffer from high energy consumption, insufficient mixing of dust and water mist, and low dust settling efficiency within the dust collection box. Especially for high-frequency dust-generating points such as crushers and screening machines, they cannot achieve precise and differentiated dust control, and therefore need improvement. Utility Model Content

[0004] This utility model proposes a dust suppression device for non-metallic mining production and processing workshops. By combining active atomization dust suppression with passive high-efficiency dust removal, it accurately addresses the complex environment with multiple dust-generating points in non-metallic mining processing workshops. It has the advantages of high dust suppression efficiency, low energy consumption, and convenient maintenance, effectively improving the workshop working environment, reducing dust pollution, and meeting the environmental protection and safety requirements of industrial production.

[0005] This utility model is implemented as follows: a dust suppression device for non-metallic mining production and processing workshops includes a base plate and a processing workshop body disposed on one side of the base plate.

[0006] A dust suppression mechanism is provided on the top of the base plate;

[0007] The dust collection mechanism includes a dust collection box fixedly installed on the top of the base plate via support legs and a water tank located behind the dust collection box and fixedly installed on the top of the base plate. The top of the dust collection box is connected to an air outlet pipe and a fixed cylinder from left to right. A spray pipe is fixedly installed at the top of the inside of the fixed cylinder. The inner side wall of the fixed cylinder is connected to a channel that is wider at the top and narrower at the bottom. The top of the channel is located at 1 / 3 of the inside of the fixed cylinder, and the bottom of the channel is connected to the dust collection box. The outer side wall of the fixed cylinder is connected to a ventilation pipe located above the channel. The other end of the ventilation pipe is connected to a suction pipe fixedly installed on the outer side wall of the dust collection box. The outer side wall of the suction pipe is connected to multiple suction hoods extending into the main body of the processing workshop.

[0008] Multiple dust-suppressing pipes are installed above the interior of the processing workshop. These dust-suppressing pipes are annular pipes with multiple atomizing nozzles connected to their bottoms.

[0009] As a preferred embodiment of the dust suppression device for a non-metallic mining production and processing workshop according to this utility model, the outer wall of the water tank is connected to a water inlet pipe with a float valve, a second water pump is provided on the side of the water tank near the processing workshop body, the second water pump is fixedly installed on the top of the base plate, the input end of the second water pump is connected to the water tank through a pipe, and the output end of the second water pump is connected to a connecting pipe fixedly installed on the outer wall of the processing workshop body through a pipe, and one end of the plurality of dust suppression pipes penetrates the inner wall of the processing workshop body and is connected to the connecting pipe.

[0010] As a preferred embodiment of the dust suppression device for a non-metallic mining production and processing workshop according to this utility model, a first water pump is provided on the left side of the water tank. The first water pump is fixedly installed on the top of the base plate. The input end of the first water pump is connected to the water tank through a pipe, and the output end of the first water pump is connected to a guide pipe through a pipe. The other end of the guide pipe extends into the fixed cylinder and is connected to the spray pipe.

[0011] As a preferred embodiment of the dust suppression device for non-metallic mining production and processing workshops according to this utility model, the interior of the air outlet duct is provided with a mist eliminator, a fan, and a filter screen arranged sequentially from bottom to top, and the bottom of the dust collection box is connected to a drain pipe with a drain valve.

[0012] As a preferred embodiment of the dust suppression device for non-metallic mining production and processing workshops according to this utility model, the spray pipe is an annular pipe with multiple spray heads connected to the bottom.

[0013] As a preferred embodiment of the dust suppression device for non-metallic mining production and processing workshops according to this utility model, the outer wall of the dust collection hood is connected to an electric valve.

[0014] The beneficial effects of this utility model are:

[0015] 1. Micron-level water mist can be sprayed through the dust suppression pipe to cover the upper space of the workshop. After combining with suspended dust particles, the water mist increases in weight and settles, reducing the concentration of dust in the air from the source. This method is suitable for continuous dust suppression of dust-generating equipment such as crushers and screening machines.

[0016] 2. The dust hood precisely captures dust from specific dust-generating points. The dust-laden airflow enters the fixed cylinder through the ventilation pipe and comes into reverse contact with the dust through the atomized water curtain of the annular spray pipe, effectively improving the capture efficiency. The channel, which is wider at the top and narrower at the bottom, uses the principle of fluid mechanics to accelerate the settling of dust particles, which fall to the bottom of the dust collection box, achieving efficient separation of dust. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a front sectional view of a dust suppression device for a non-metallic mining production and processing workshop according to the present invention.

[0019] Figure 2 This is a cross-sectional view showing the connection between the water tank and the main body of the processing workshop of this utility model.

[0020] Figure 3 This is a cross-sectional view showing the connection between the dust collector box and the main body of the processing workshop of this utility model.

[0021] Figure 4 This is a top sectional view of the dust suppression pipe of this utility model.

[0022] Figure 5 This is a top sectional view of the dust suction tube of this utility model.

[0023] The markings in the diagram are as follows: 1. Base plate; 101. Processing workshop body; 2. Dust collection box; 201. Air outlet duct; 202. Fan; 203. Mist eliminator; 204. Sewage pipe; 3. Water tank; 301. Water inlet pipe; 4. Fixed cylinder; 401. Spray pipe; 402. Channel; 403. Ventilation pipe; 404. Dust suction pipe; 405. Dust suction hood; 406. Electric valve; 5. First water pump; 501. Guide pipe; 6. Second water pump; 601. Connecting pipe; 602. Dust settling pipe. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0025] Please see Figure 1-5 A dust suppression device for a non-metallic mining production and processing workshop includes a base plate 1, a processing workshop body 101 disposed on one side of the base plate 1, and a dust suppression mechanism disposed on the top of the base plate 1.

[0026] The dust collection mechanism includes a dust collection box 2 fixedly installed on the top of the base plate 1 via support legs and a water tank 3 located behind the dust collection box 2 and fixedly installed on the top of the base plate 1. The top of the dust collection box 2 is connected to an air outlet pipe 201 and a fixed cylinder 4 from left to right. A spray pipe 401 is fixedly installed at the top of the inside of the fixed cylinder 4. The inner side wall of the fixed cylinder 4 is connected to a channel 402 that is wider at the top and narrower at the bottom. The top of the channel 402 is located at 1 / 3 of the inside of the fixed cylinder 4, and the bottom of the channel 402 is connected to the dust collection box 2. The outer side wall of the fixed cylinder 4 is connected to a ventilation pipe 403 located above the channel 402. The other end of the ventilation pipe 403 is connected to a suction pipe 404 fixedly installed on the outer side wall of the dust collection box 2. The outer side wall of the suction pipe 404 is connected to multiple suction hoods 405 extending into the processing workshop body 101.

[0027] Multiple dust-falling pipes 602 are installed above the interior of the processing workshop body 101. The dust-falling pipes 602 are annular pipes with multiple atomizing nozzles connected to their bottoms.

[0028] In this embodiment: the second water pump 6 draws water from the water tank 3, pressurizes it, and then transports it to the dust settling pipe 602 through the connecting pipe 601. Micron-sized water mist is sprayed onto the workshop work area through atomizing nozzles. The water mist diffuses in the upper space of the workshop, combines with suspended dust particles, increases the weight of the dust, and accelerates its gravity settling to the ground, reducing the concentration of dust in the air and achieving dust suppression at the source. When the fan 202 is running, a negative pressure is formed at the end of the suction pipe 404, driving dust-laden air through the suction hood 405, suction pipe 404, and ventilation pipe 403 into the fixed cylinder 4. The first water pump 5 pressurizes the water in the water tank 3 and then transports it through the guide pipe 501 to the spray pipe 401 at the top of the fixed cylinder 4, where it is sprayed downwards through the spray nozzles. The atomized water curtain comes into countercurrent contact with the rising dust-laden airflow, capturing dust particles and increasing their weight. The increased dust particles are then carried by the airflow into the upper-wide and lower-narrow channel 402 on the inner wall of the fixed cylinder 4. The cross-sectional area of ​​the channel 402 gradually decreases, the airflow speed increases, and a stronger downward thrust is generated, causing the dust particles to fall faster into the bottom of the dust collection box 2, completing solid-liquid separation. The purified air is intercepted by the mist trap 203 in the exhaust pipe 201 and finally discharged outdoors by the fan 202. The atomized nozzle dust suppression pipe 602 in the workshop and the spray pipe 401 in the fixed cylinder 4 form a "double water mist purification" that targets suspended dust and inhalable dust respectively, covering the treatment needs of dust with different particle sizes.

[0029] As a technical optimization of this utility model, the outer wall of the water tank 3 is connected to an inlet pipe 301 with a float valve. A second water pump 6 is provided on the side of the water tank 3 near the processing workshop body 101. The second water pump 6 is fixedly installed on the top of the base plate 1. The input end of the second water pump 6 is connected to the water tank 3 through a pipe, and the output end of the second water pump 6 is connected to a connecting pipe 601 fixedly installed on the outer wall of the processing workshop body 101 through a pipe. One end of a plurality of dust suppression pipes 602 penetrates the inner wall of the processing workshop body 101 and is connected to the connecting pipe 601.

[0030] In this embodiment: the water inlet pipe 301 is connected to an external water source, and the float valve can automatically control the water inlet according to the water level of the water tank 3 to avoid frequent manual water replenishment. The atomizing nozzles evenly distributed at the bottom of the dust suppression pipe 602 face the workshop work area. When the second water pump 6 starts, the water in the water tank 3 is pressurized and transported to multiple dust suppression pipes 602 through the connecting pipe 601, so that the atomizing nozzles form micron-level water mist, which covers the upper space of the workshop. After combining with suspended dust particles, the water settles by gravity, thus achieving active dust suppression in the workshop.

[0031] As a technical optimization of this utility model, a first water pump 5 is provided on the left side of the water tank 3. The first water pump 5 is fixedly installed on the top of the base plate 1. The input end of the first water pump 5 is connected to the water tank 3 through a pipe, and the output end of the first water pump 5 is connected to a guide pipe 501 through a pipe. The other end of the guide pipe 501 extends into the fixed cylinder 4 and is connected to the spray pipe 401.

[0032] In this embodiment: when the first water pump 5 is working, the water in the water tank 3 is pressurized and forms an atomized water curtain through the spray head, which comes into countercurrent contact with the dust-laden airflow entering the fixed cylinder 4 from the ventilation pipe 403. The dust particles are captured by the water mist and become heavier, falling into the bottom of the dust collection box 2 along the upper-wide and lower-narrow channel 402, thus achieving preliminary dust purification. The channel 402 has a structure that is wider at the top and narrower at the bottom, so that the space inside the channel 402 gradually narrows. When the dust particles that have been captured by the water mist and become heavier enter the channel 402, the cross-sectional area of ​​the channel 402 gradually decreases, and the airflow speed gradually increases. According to the principle of fluid mechanics, under the condition of a constant flow rate, the cross-sectional area of ​​the channel 402 becomes smaller and the airflow speed increases. This will generate a stronger downward pushing effect on the dust particles, accelerating the downward movement of the dust particles and causing them to fall into the bottom of the dust collection box 2 more quickly.

[0033] As a technical optimization of this utility model, the air outlet duct 201 is provided with a mist eliminator 203, a fan 202 and a filter screen arranged sequentially from bottom to top, and the bottom of the dust collection box 2 is connected to a drain pipe 204 with a drain valve.

[0034] In this embodiment: the fan 202 is an axial flow fan. When its impeller rotates, it creates a negative pressure at the end of the dust suction pipe 404, driving the dust-laden air in the processing workshop body 101 through the dust suction hood 405, the dust suction pipe 404, and the ventilation pipe 403 into the fixed cylinder 4; the mist eliminator 203 is a baffle plate structure or a wire mesh demister, which can effectively intercept residual water mist particles in the air, prevent moisture from being discharged with the purified air, ensure water recycling in the dust collection box 2, and the filter screen further removes residual dust. By opening the drain valve, the sewage in the dust collection box 2 is discharged through the drain pipe 204.

[0035] As a technical optimization of this utility model, the spray pipe 401 is an annular pipe with multiple spray heads connected to its bottom.

[0036] In this embodiment: the spray pipe 401 is an annular pipe that surrounds the inner wall of the fixed cylinder 4. Its bottom is connected to 6-8 conical spray heads at equal intervals. The spray angle is tilted downward at 30°, covering 2 / 3 of the inner diameter area of ​​the fixed cylinder 4. The spray heads are spiral atomizing nozzles, which can atomize the water flow into droplets of 50-100μm, which are fully mixed with the rising dust-laden airflow, thereby improving the dust particle capture efficiency by more than 40%. This structure ensures that a uniform atomization area is formed inside the fixed cylinder 4, significantly increasing the contact area between dust and water mist and enhancing the dust removal effect.

[0037] As a technical optimization of this utility model, the outer wall of the dust hood 405 is connected to an electric valve 406.

[0038] In this embodiment: the dust collection hood 405 has a flared structure. Each dust collection hood 405 corresponds to a specific dust-generating device (such as a crusher or screening machine) in the processing workshop body 101. When the equipment in a certain area is running, the control system automatically opens the electric valve 406 of the corresponding dust collection hood 405 to increase the dust collection air volume in that area. When the equipment stops, the valve closes to avoid ineffective energy consumption. The electric valve 406 adopts a pneumatic butterfly valve with a response time of ≤2 seconds, which can realize precise control of different dust-generating points in the workshop and improve the system energy efficiency ratio.

[0039] The working principle and usage process of this utility model are as follows: The device is electrically connected to an external power supply and a PLC controller. The water inlet pipe 301 is connected to an external water pipe. The water tank 3 is automatically replenished with water through the water inlet pipe 301 with a float valve to maintain a stable water level. The second water pump 6 draws water from the water tank 3 and delivers it to the dust settling pipe 602 inside the processing workshop body 101 through the connecting pipe 601. Fine water mist is sprayed out through the atomizing nozzle at the bottom. The water mist combines with the suspended dust in the workshop, increasing the weight of the dust and accelerating its settling to the ground, thus reducing the dust concentration in the air. The fan 202 is installed inside the air outlet pipe 201. When running, it generates negative pressure, which is controlled by the electric valve 406 on the outside of the dust suction hood 405 (the PLC controller can specifically control the opening and closing of the electric valve 406 for different workshops). (Precise control of dust-generating points) The dust-laden air in the workshop is drawn into the dust suction pipe 404. The dust-laden air enters the fixed cylinder 4 through the ventilation pipe 403. Utilizing the "wide at the top and narrow at the bottom" structure of the channel 402 (the top is located at 1 / 3 of the way inside the fixed cylinder 4), the airflow is guided upward. The first water pump 5 is started to draw water from the water tank 3 and delivers it to the spray pipe 401 inside the fixed cylinder 4 through the guide pipe 501. The spray pipe 401 sprays out a mist of water through the bottom spray head. The dust-laden airflow is fully mixed with the sprayed water mist inside the fixed cylinder 4. The dust particles are captured by the water mist and become heavier. They fall into the bottom of the dust collection box 2 along the channel 402 with the water flow (gravity settling). The mist trap 203 and filter screen in the exhaust pipe 201 capture the water mist particles and residual dust in the air to prevent moisture loss. Finally, the clean air is discharged outdoors by the fan 202.

[0040] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] However, the above are merely specific embodiments of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A dust suppression device for a non-metallic mining production and processing workshop, comprising a base plate (1) and a processing workshop body (101) disposed on one side of the base plate (1), characterized in that: A dust suppression mechanism is provided on the top of the base plate (1); The dust collection mechanism includes a dust collection box (2) fixedly mounted on the top of the base plate (1) via support legs, and a water tank (3) located behind the dust collection box (2) and fixedly mounted on the top of the base plate (1). From left to right, the top of the dust collection box (2) is connected to an air outlet pipe (201) and a fixed cylinder (4). A spray pipe (401) is fixedly mounted at the top of the inside of the fixed cylinder (4). The inner side wall of the fixed cylinder (4) is connected to a channel (402) that is wider at the top and narrower at the bottom. The top of the channel (4) is located at 1 / 3 of the inside of the fixed cylinder (4), and the bottom of the channel (402) is connected to the dust collection box (2). The outer wall of the fixed cylinder (4) is connected to a ventilation pipe (403) located above the channel (402). The other end of the ventilation pipe (403) is connected to a dust suction pipe (404) fixedly installed on the outer wall of the dust collection box (2). The outer wall of the dust suction pipe (404) is connected to a plurality of dust suction hoods (405) extending into the processing workshop body (101). Multiple dust-suppressing pipes (602) are installed above the interior of the processing workshop body (101). The dust-suppressing pipes (602) are annular pipes with multiple atomizing nozzles connected to their bottoms.

2. A dust suppression device for a non-metallic mining production and processing workshop according to claim 1, characterized in that: The outer wall of the water tank (3) is connected to an inlet pipe (301) with a float valve. A second water pump (6) is provided on the side of the water tank (3) near the processing workshop body (101). The second water pump (6) is fixedly installed on the top of the base plate (1). The input end of the second water pump (6) is connected to the water tank (3) through a pipe, and the output end of the second water pump (6) is connected to a connecting pipe (601) fixedly installed on the outer wall of the processing workshop body (101) through a pipe. One end of the plurality of dust suppression pipes (602) penetrates the inner wall of the processing workshop body (101) and is connected to the connecting pipe (601).

3. A dust suppression device for a non-metallic mining production and processing workshop according to claim 1, characterized in that: A first water pump (5) is provided on the left side of the water tank (3). The first water pump (5) is fixedly installed on the top of the base plate (1). The input end of the first water pump (5) is connected to the water tank (3) through a pipe, and the output end of the first water pump (5) is connected to a guide pipe (501) through a pipe. The other end of the guide pipe (501) extends into the fixed cylinder (4) and is connected to the spray pipe (401).

4. A dust suppression device for a non-metallic mining production and processing workshop according to claim 1, characterized in that: The air outlet pipe (201) is equipped with a mist eliminator (203), a fan (202) and a filter screen from bottom to top inside. The bottom of the dust collection box (2) is connected to a drain pipe (204) with a drain valve.

5. A dust suppression device for a non-metallic mining production and processing workshop according to claim 1, characterized in that: The spray pipe (401) is an annular pipe with multiple spray heads connected to its bottom.

6. A dust suppression device for a non-metallic mining production and processing workshop according to claim 1, characterized in that: An electric valve (406) is connected to the outer wall of the dust hood (405).

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