Mining dry-wet separation and purification device

Abstract

The utility model discloses a mine dry-wet separation purification device which comprises a dust reducing and removing box body, a main air inlet and a main air outlet pipe are arranged at the two ends of the dust reducing and removing box body respectively, a spray filtering device is installed in the main air inlet, and an adsorption sheet type filtering box is obliquely installed at the position, close to the main air inlet, in the dust reducing and removing box body. An axial flow dehydration purification device is installed in the main air outlet pipe, a front step dehydration ring and a second step dehydration ring are fixedly installed at the position, away from the axial flow dehydration purification device, of the outer portion of the main air outlet pipe, and a water retaining cone is fixedly installed in the middle in the front step dehydration ring. The dust removal device is simple in structure and low in production cost, the dust removal effect on fine dust is good through the combined action of the spray filtering device and the filter screen in the dust removal box body, the dehydration effect is improved through the cooperation of the axial flow dehydration device and the multiple dehydration rings, meanwhile, the removal effect on the fine dust can be further improved, and the dust removal efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, and more specifically, particularly to a dry-wet separation and purification device for mining. Background Art

[0002] At present, in dust-producing areas such as metallurgy, mining, underground coal mining faces, thermal power generation coal yards, etc., a large amount of dust not only poses a safety hazard, but also seriously affects the physical and mental health of employees; dust-producing work points on the ground also pollute the surrounding air, causing local pollution of the environment. There are generally three commonly used dust removal methods: 1. Wet dust collector, this method uses a local fan to suck the dust-containing gas into the dust removal box of the spray and filter, and moistens the dust-containing particles with water mist, and then passes through the filter to achieve the purpose of dust removal. The disadvantage is that the dust removal effect on fine dust is not good. Although a large amount of dust can be removed, the finer dust is not handled thoroughly; 2. Dry dust collector: This dust removal method uses bag or cartridge filtration to remove dust. This dust removal method uses a local fan to suck the dust-containing gas into the dust removal box of the bag or filter cartridge filtration, and passes through the bag or filter cartridge. Filter out dust in dust-laden gas. This structure is generally large in size and expensive. It is not suitable for small workplaces. It is better at removing fine dust and is suitable for relatively dry environments. If the ambient humidity is high, it is easy to cause bag or filter cartridge blockage, which makes cleaning more difficult, resulting in increased system resistance and a direct impact on dust removal efficiency. 3. Spray dust reduction. This method uses spraying to moisten the dust in the air and then drops it with water mist. This method is suitable for local spaces and has poor dust removal effects, but is low in cost. The three dust removal methods cannot achieve ideal results in smoke treatment. Utility Model Content

[0003] The utility model aims to provide a dry-wet separation and purification device for mining with simple structure and good dust removal effect.

[0004] In order to achieve the above-mentioned objectives, the technical scheme adopted by the utility model is as follows: a dry-wet separation purification device for mining, comprising a dust reduction box body, wherein two ends of the dust reduction box body are respectively provided with a total air inlet and a main air outlet pipe, a spray filter device is installed in the total air inlet, an adsorption plate filter box is obliquely installed inside the dust reduction box body close to the total air inlet, an axial flow dehydration purification device is installed in the main air outlet pipe, one end of the axial flow dehydration purification device is connected with the interior of the dust reduction box body through a secondary air inlet, a front step dehydration ring and a second step dehydration ring are fixedly installed on the outside of the main air outlet pipe at a position away from the axial flow dehydration purification device, the front step dehydration ring and the second step dehydration ring are internally connected to the main air outlet pipe, a water retaining cone is fixedly installed in the middle part of the front step dehydration ring, the second step dehydration ring is located between the front step dehydration ring and the air outlet of the main air outlet pipe, and a rear step dehydration ring is fixedly installed on the outside of the air outlet of the main air outlet pipe.

[0005] Preferably, the dust removal box, the axial flow dehydration purification device and the bottom of the front step dehydration ring are respectively provided with a first water collecting box, a second water collecting box and a third water collecting box.

[0006] Preferably, the axial flow dehydration purification device includes a supporting mesh plate and a rotating device, the supporting mesh plate is located in the main air outlet duct, and the supporting mesh plate is installed at the secondary air inlet position, the rotating device is installed on the supporting mesh plate, and a rotating impeller is installed on the rotating device. A secondary air outlet is provided between the rotating impeller and the front step dehydration ring, and a secondary static blade is installed on the cylinder behind the secondary air outlet.

[0007] Preferably, the spray filtering device includes a front-stage filter and a plurality of spray heads, the front-stage filter is vertically fixedly installed in the main air inlet, the plurality of spray heads are fixedly installed inside the dust removal box, and the plurality of spray heads face the front-stage filter.

[0008] Preferably, a liquid leakage tube is installed at the bottom of the main air inlet.

[0009] Preferably, a wire filter screen and a filter screen frame are installed at the bottom and top of the adsorption sheet filter box respectively.

[0010] Preferably, a safety filter is vertically fixedly installed inside the rear step dehydration ring.

[0011] Preferably, a supporting base is fixedly installed on the bottom of the dust reduction and removal box.

[0012] Preferably, the front step dehydration ring is connected to the lower end of the secondary step dehydration ring, and a water baffle is fixedly installed at the lower end of the inner wall of the secondary step dehydration ring.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] The utility model has a simple structure, low production cost, is easy to carry, and is also suitable for use in small venues. It has a good dust removal effect on fine dust through the combined effect of the spray filtering device and the filter screen in the dust removal box. It has an adsorption plate filter box for filtration, which effectively adsorbs and removes harmful substances in the gas, and effectively improves the purification effect of smoke and dust; the dehydration effect is improved through the cooperation of the axial flow dehydration device and multiple dehydration rings, and at the same time, it can further increase the removal effect of fine dust and improve the dust removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a structural diagram of a dry-wet separation and purification device for mining in the utility model;

[0017] Figure 2 It is a front view of a dry-wet separation and purification device for mining of the utility model.

[0018] In the figure: 1 dust removal box, 11 first water collecting box, 2 main air inlet, 21 front filter, 22 spray head, 23 leakage tube, 3 adsorption plate filter box, 31 wire filter, 32 filter frame, 4 secondary air inlet, 41 rotating impeller, 42 axial flow dehydration purification device, 43 secondary static blade, 44 rotating device, 45 secondary air outlet, 46 second water collecting box, 5 front step dehydration ring, 51 water retaining cone, 52 third water collecting box, 53 water retaining plate, 6 secondary step dehydration ring, 7 main air outlet pipe, 71 safety filter, 72 rear step dehydration ring, 8 support base. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] See also Figure 1 and Figure 2As shown, the utility model provides a dry-wet separation purification device for mining, including a dust reduction and removal box body 1, wherein both ends of the dust reduction and removal box body 1 are respectively provided with a total air inlet 2 and a main air outlet pipe 7, a spray filter device is installed in the total air inlet 2, an adsorption filter box 3 is obliquely installed inside the dust reduction and removal box body 1 close to the total air inlet 2, an axial flow dehydration purification device 42 is installed in the main air outlet pipe 7, one end of the axial flow dehydration purification device 42 is connected to the inside of the dust reduction and removal box body 1 through the secondary air inlet 4, a front step dehydration ring 5 and a second step dehydration ring 6 are fixedly installed on the outside of the main air outlet pipe 7 away from the axial flow dehydration purification device 42, the front step dehydration ring 5 and the second step dehydration ring 6 are both connected to the main air outlet pipe 7, and the front step dehydration ring 5 and the second step dehydration ring 6 are connected to the main air outlet pipe 7. The dehydration ring 6 is a hollow annular structure, and its material is consistent with that of the main air outlet pipe 7, which can be a stainless steel or carbon steel structure. A water retaining cone 51 is fixedly installed inside the main air outlet pipe 7 at the position of the front step dehydration ring 5, and the second step dehydration ring 6 is located between the front step dehydration ring 5 and the air outlet of the main air outlet pipe 7. A rear step dehydration ring 72 is fixedly installed outside the air outlet of the main air outlet pipe 7, wherein the water retaining cone 51 prevents the uncleanly dehydrated airflow from being discharged directly through the central orifice, and a small amount of airflow in the central part of the barrel is blocked by the water retaining cone 51, and the airflow direction is changed. The airflow impacts the front step dehydration ring 5 along the cone wall, and enters the secondary step dehydration ring 6 for dehydration again. Due to the impact of the airflow, the moisture in the airflow will adhere to the inner walls of the front step dehydration ring 5 and the second step dehydration ring 6.

[0021] Furthermore, in order to facilitate the discharge of the water generated after filtration, in this embodiment, the dust removal box 1, the axial flow dehydration purification device 42 and the front step dehydration ring 5 are respectively provided with a first water collecting box 11, a second water collecting box 46 and a third water collecting box 52 at the bottom, and the first water collecting box 11, the second water collecting box 46 and the third water collecting box 52 are all provided with drainage outlets at the bottom.

[0022] In this embodiment, the axial flow dehydration purification device 42 includes a supporting mesh plate and a rotating device 44. The supporting mesh plate is located in the main air outlet pipe 7 and is installed at the air inlet 4. The rotating device 44 is fixedly installed on the supporting mesh plate. A rotating impeller 41 is installed on the rotating device 44. The rotating device 44 is used to drive the rotating impeller 41 to rotate. A secondary air outlet 45 is provided between the rotating impeller 41 and the front step dehydration ring 5. A secondary static blade 43 is installed on the cylinder of the secondary air outlet 45. The secondary air outlet is a blind hole, and the air flow is blown out from the secondary air outlet 45. When the air flow carries water vapor and hits the rotating impeller 41, due to the speed difference between the air flow and the rotating impeller 41, and the specific design of the surface of the rotating impeller 41, the air flow will be obstructed and guided by the blades and changed. At the same time, the rotating impeller 41 will generate an outward centrifugal force on the air flow. This centrifugal force causes the water vapor heavy particles or water droplets in the air flow to be thrown to the surrounding round passage through the centrifugal force of the impeller and then flow into the bottom water collecting box, thereby realizing the first step of water vapor separation.

[0023] In order to remove dust from the gas entering the main air inlet 2, in this embodiment, the spray filtering device includes a front-stage filter 21 and a plurality of spray heads 22. The front-stage filter 21 is vertically fixedly installed in the main air inlet 2, and the plurality of spray heads 22 are fixedly installed inside the dust removal box 1, and the plurality of spray heads 22 are facing the front-stage filter 21.

[0024] In this embodiment, a liquid leakage tube 23 is installed at the bottom of the main air inlet 2 to discharge the water generated by the water mist sprayed by the spray head 22.

[0025] Furthermore, in order to improve the stability of the adsorption plate filter box 3, in this embodiment, a filter frame 32 is fixedly installed on the upper surface of the adsorption plate filter box 3 to press down the adsorption plate filter box 3, and a wire filter 31 is installed at the bottom of the adsorption plate filter box 3 for initial filtration.

[0026] In this embodiment, a safety filter 71 is vertically fixedly installed inside the rear step dehydration ring 72 .

[0027] In this embodiment, a support base 8 is fixedly installed at the bottom of the dust reduction and removal box 1 to facilitate the installation of the dust reduction and removal box 1.

[0028] In this embodiment, the front step dehydration ring 5 is connected to the secondary step dehydration ring 6, and a water baffle 53 is fixedly installed at the lower end of the inner wall of the secondary step dehydration ring 6 to prevent the water in the third water collecting box 52 from being blown to the outlet of the main air outlet pipe 7 by the airflow.

[0029] The specific working principle is as follows: the dust-laden gas is pressed into or sucked into the main air inlet 2 of the dust removal box 1 through the fan. After the dust-laden airflow enters the air inlet 2, it is first moistened by the water mist sprayed by the spray head 22. After moistening, most of the heavy particles in the dust-laden airflow are blocked between the front-stage filter screen 21, and flow into the bottom of the dust removal box 1 through the leakage tube 23 at the bottom of the front-stage filter screen 21. After the airflow passes through the front-stage filter screen 21, it continues to be sprayed by multiple spray heads 22 without dead angles. At this time, after the airflow enters the box, the cross-sectional area increases, the airflow velocity decreases, and some tiny dust particles in the airflow fall to the dust removal box 1 by their own weight and flow into the first water collection area. Box 11; With the continuous dust reduction and increase of the airflow, the purified airflow enters the upper space of the dust reduction and removal box 1 through the adsorption sheet filter box 3, and the airflow containing fine dust is first filtered by the wire filter 31, and the dust-containing gas is purified for the third time, and the fine dust and most of the water mist are filtered and flow into the first water collecting box 11, and discharged through the first water collecting box 11; After the airflow purified for the third time enters the adsorption sheet filter box 3 again, the smoke and some harmful substances in the airflow are adsorbed by the filler in the adsorption sheet filter box 3, and the airflow is purified for the fourth time. At this time, the purified airflow is a clean airflow with a low humidity content;

[0030] The airflow with slightly higher humidity enters the axial flow dehydration purification device 42 for further dehydration treatment. At this time, the airflow enters the vicinity of the secondary air outlet 45 (the airflow direction is as follows: Figure 1 The airflow entering the secondary air outlet 45 (as shown in the direction of the middle arrow) has a reduced cross-section and an increased flow rate, which drives the rotating impeller 41 to rotate. At this time, the airflow with slightly higher humidity constantly collides with the blades to cause condensation and adhesion, and the airflow changes direction to achieve water vapor separation. The separated water mist and water droplets are thrown into the surrounding annular water collecting box by the centrifugal force of the rotating impeller, and then discharged through the second water collecting box 46; after the airflow passes through the rotating impeller 41, it becomes a rotating airflow, and then is rectified by the secondary static blades 43, so that the airflow changes into a linear motion direction and is discharged along the direction of the cylinder wall. At this time, the tiny water droplets formed by the collision of water molecules in the humid airflow with the secondary static blades 43 enter the front step dehydration ring 5 along the cylinder wall together with the airflow. The water in the airflow hits the inner wall of the front step dehydration ring 5 and is dehydrated again. At this time, the tiny water droplets or water gather along the inner wall of the front step dehydration ring 5 and flow into the third water collecting box 52 at the bottom in the circumferential direction;

[0031] The water retaining cone 51 prevents the airflow that is not dehydrated from being discharged directly through the central orifice. A small amount of airflow in the central part of the barrel is blocked by the central cone barrel, and condensation and adhesion occur again due to collision. The flow direction of the airflow and the water droplets formed by the collision changes, and the airflow flows along the cone wall to the inner wall of the axial flow dehydration purification device 42, and enters the secondary step dehydration ring 6 at the same time. The airflow enters the inner wall and collides, and water vapor condenses and adheres, and is dehydrated again. After the moisture in the airflow hits the inner wall of the secondary step dehydration ring 6 and condenses and adheres, tiny water droplets or moisture gather along the secondary step dehydration ring 6 and flow into the second water collecting box 46 at the bottom; since the front step dehydration ring 5 is connected to the bottom of the secondary step dehydration ring 6, the pressure of the front step dehydration ring 5 is higher than that of the secondary step dehydration ring 6. At this time, the water retaining plate 53 at the bottom of the secondary step dehydration ring 5 prevents moisture from entering the rear step dehydration ring 72 in the opposite direction;

[0032] Since the diameter of the front-stage step dehydration ring 5 is larger than that of the secondary step dehydration ring 6, the airflow flows through the ring walls of the front-stage step dehydration ring 5 and the secondary step dehydration ring 6 in sequence and collides with them, causing the airflow to change direction continuously. The turbulent airflow collides with the inner wall of the rear-stage step dehydration ring 72 again, and the water vapor condenses and adheres on the blocking surface inside the dehydration ring, further realizing water vapor separation and dehydration. The dehydrated airflow continues to flow and collide with the rear-stage step dehydration ring 72 whose cross-section is smaller than that of the front-stage step dehydration ring, and the airflow with less moisture continues to flow in the rear-stage step dehydration ring 72. Condensation and adhesion occur again on the blocking surface of the inner wall of the ring 72, and change direction, realizing water vapor separation and dehydration again. The fine water droplets or moisture gather again in the rear-stage stepped dehydration ring 72 and flow into the third water collecting box 52 at the bottom. The fine water droplets or moisture formed by the front-stage, second-stage and rear-stage stepped dehydration rings 72 flow into the third water collecting box 52 at the bottom and are discharged from the third water collecting box 52. The purified air after dry and wet separation is finally discharged from the main air outlet duct 7, thereby achieving the purpose of dust removal, dust reduction and air purification.

[0033] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner may make various variations or modifications within the scope of the appended claims. As long as they do not exceed the protection scope described in the claims of the present invention, they should be within the protection scope of the present invention.

Claims

1. A dry-wet separation and purification device for mining, comprising a dust removal box, with a main air inlet and a main air outlet duct respectively arranged at both ends of the dust removal box, characterized in that: A spray filtering device is installed in the main air inlet, an adsorption plate filter box is installed obliquely inside the dust reduction and removal box near the main air inlet, an axial flow dehydration purification device is installed in the main air outlet pipe, one end of the axial flow dehydration purification device is connected to the inside of the dust reduction and removal box through the secondary air inlet, a front step dehydration ring and a second step dehydration ring are fixedly installed on the outside of the main air outlet pipe away from the axial flow dehydration purification device, the interiors of the front step dehydration ring and the second step dehydration ring are both connected to the main air outlet pipe, a water retaining cone is fixedly installed in the middle of the front step dehydration ring, the second step dehydration ring is located between the front step dehydration ring and the air outlet of the main air outlet pipe, and a rear step dehydration ring is fixedly installed on the outside of the air outlet of the main air outlet pipe.

2. A dry-wet separation and purification device for mining according to claim 1, characterized in that: The dust removal box, the axial flow dehydration purification device and the bottom of the front step dehydration ring are respectively provided with a first water collecting box, a second water collecting box and a third water collecting box.

3. A dry-wet separation and purification device for mining according to claim 2, characterized in that: The axial flow dehydration purification device includes a supporting mesh plate and a rotating device. The supporting mesh plate is located in the main air outlet pipe and is installed at the secondary air inlet position. The rotating device is installed on the supporting mesh plate. The rotating device is equipped with a rotating impeller. A secondary air outlet is provided between the rotating impeller and the front step dehydration ring. Secondary static blades are installed around the cylinder in the secondary air outlet.

4. A dry-wet separation and purification device for mining according to claim 1, characterized in that: The spray filtering device includes a front-stage filter and a plurality of spray heads. The front-stage filter is vertically fixedly installed in the main air inlet. The plurality of spray heads are fixedly installed inside the dust removal box, and the plurality of spray heads face the front-stage filter.

5. A dry-wet separation and purification device for mining according to claim 1, characterized in that: A liquid leakage capillary is installed at the bottom of the main air inlet.

6. A dry-wet separation and purification device for mining according to claim 1, characterized in that: A steel wire filter screen and a filter screen frame are respectively installed at the bottom and the top of the adsorption sheet filter box.

7. A dry-wet separation and purification device for mining according to claim 1, characterized in that: A safety filter is vertically fixedly installed inside the rear step dehydration ring.

8. A dry-wet separation and purification device for mining according to claim 1, characterized in that: A supporting base is fixedly installed at the bottom of the dust reduction and removal box.

9. A dry-wet separation and purification device for mining according to claim 1, characterized in that: The front step dehydration ring is connected to the lower end of the secondary step dehydration ring through a water collecting box, and a water baffle is fixedly installed at the lower end of the inner wall of the secondary step dehydration ring.

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