Humidity-adjusting stirring device and coal dry separation equipment
By designing a wet conditioning and stirring device, the dust is wet and sticky by spraying and stirring blades, the secondary dust problem caused by the pulverized coal separated from the dry dust collector during the reprinting and transportation process is solved, and the environmental protection effect in the drying process of coal mines is improved.
Patent Information
- Application Number
- CN202323667998.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The pulverized coal separated by the dry dust collector will generate a large amount of secondary dust during subsequent reprinting and transportation, resulting in environmental pollution.
A wet conditioning stirring device is designed, including a main housing, a stirring shaft and a nozzle. The dust is sprayed by setting a nozzle on the top of the accommodating cavity, and stirring the dust through the stirring blades on the stirring shaft, so that the dust is wet and sticky and discharged from the discharge port.
It effectively solves the secondary dust problem caused by pulverized coal during reprinting and transportation, and improves the environmental protection effect in the dry-spreading process of coal mines.
Smart Images
Figure CN222586184U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dust removal equipment, in particular to a humidity regulating and stirring device and coal dry sorting equipment. Background Art
[0002] Dry coal preparation is a commonly used coal preparation method in coal mining. Its basic principle is to use the differences in physical properties such as gravity, buoyancy, and composition between coal and air at different densities to separate coal from coal rock through mechanical and airflow. However, a large amount of granular fine dust is generally generated during the production process of dry coal preparation. If it is released into the environment, it will cause great pollution to the environment and cause great occupational hazards to coal preparation workers.
[0003] In order to capture and filter the fine granular dust generated by coal mines, thereby reducing environmental pollution and occupational hazards, coal mining enterprises generally use dry dust collectors to collect dust. Conventional dry dust collectors generally include cartridge dust collectors and cyclone dust collectors. The dry dust collector can collect dust into the collection bucket of the dry dust collector, and transfer and transport the dust through bolt conveyors and dischargers.
[0004] However, since the dust is relatively dry, the pulverized coal separated by the dry dust collector will generate a large amount of secondary dust during the subsequent transfer and transportation process, causing environmental pollution. Utility Model Content
[0005] The utility model aims to provide a humidity regulating and stirring device and coal dry sorting equipment to alleviate the technical problem that the pulverized coal separated by the dry dust collector in the prior art will generate a large amount of secondary dust during the subsequent transfer and transportation process, causing environmental pollution.
[0006] The utility model provides a humidity control and stirring device, comprising:
[0007] A main shell, wherein a receiving cavity is provided in the main shell, a feed port is provided at the top of the main shell, the feed port is used to be connected to the outlet of the dry dust collector, and a discharge port is provided at the bottom of the main shell;
[0008] A stirring shaft, the stirring shaft is rotatably disposed in the accommodating cavity and extends from the feed inlet to the discharge outlet, and stirring blades are evenly spaced along the axial direction of the stirring shaft;
[0009] The nozzle is arranged at the top of the containing cavity and sprays into the containing cavity.
[0010] Furthermore, the stirring blade is arranged at an angle of 15° to 60° with respect to the axial direction of the stirring shaft.
[0011] Furthermore, one or two stirring shafts are provided. When two stirring shafts are provided, the two stirring shafts are provided in parallel, and the stirring blades of the two stirring shafts are provided in opposite directions.
[0012] Furthermore, the humidity controlling and stirring device also includes a driving assembly and a connecting flange, the two connecting flanges are respectively arranged at both ends of the stirring shaft and connected to the stirring shaft, the driving assembly is arranged at one end of the main shell and is transmission-connected to one of the connecting flanges, and the other connecting flange is rotationally connected to the main shell.
[0013] Furthermore, the main shell has a U-shaped cross section along a direction perpendicular to its extension direction.
[0014] Furthermore, the plurality of nozzles are arranged on one end of the main shell body close to the feed port.
[0015] Furthermore, the humidity control and stirring device further comprises an electric valve, the plurality of nozzles are respectively connected to one end of the electric valve, and the other end of the electric valve is used to be connected to a liquid passage.
[0016] Furthermore, the humidity control and stirring device further comprises a manual valve, a plurality of the manual valves are arranged in one-to-one correspondence with the nozzles, and the manual valve is arranged between the nozzles and the electric valve.
[0017] Furthermore, the horizontal height of one end of the accommodating cavity close to the discharge port is higher than the horizontal height of one end of the accommodating cavity close to the feed port, and the height difference between the two is 0.5-2 times the length of the rotating blade.
[0018] Another aspect of the utility model provides a coal dry sorting device, comprising the above-mentioned moisture regulating and stirring device.
[0019] Beneficial effects:
[0020] The utility model provides a humidity regulating and stirring device, comprising a main shell, a stirring shaft and a nozzle, a containing cavity is arranged in the main shell, a feed port is arranged on the top of the main shell, the feed port is used to be connected with the outlet of the dry dust collector, and a discharge port is arranged on the bottom of the main shell; the stirring shaft is arranged in the containing cavity, and extends from the feed port to the discharge port, and stirring blades are arranged on the stirring shaft along its axial direction at uniform intervals; the nozzle is arranged at the top of the containing cavity, and sprays into the containing cavity; by arranging the nozzle at the top of the containing cavity, the dust discharged into the feed port of the dry dust collector by the dry dust collector is sprayed, and at the same time, the dust is stirred by the stirring blades on the stirring shaft to make the dust wet and sticky, and then discharged from the discharge port, so as to solve the problem that the pulverized coal separated by the dry dust collector will generate a large amount of secondary dust in the subsequent reprinting and transportation process, and improve the environmental protection effect in the dry selection process of coal mines.
[0021] The utility model also provides a coal dry sorting device, including the above-mentioned humidity control and stirring device, which has all the advantages of the above-mentioned humidity control and stirring device compared with the prior art, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 A sectional view of the overall structure of the humidity control and stirring device provided in an embodiment of the utility model;
[0024] Figure 2 This is an overall structural diagram of the humidity regulating and stirring device provided in an embodiment of the utility model.
[0025] icon:
[0026] 100, main housing; 110, receiving cavity; 120, feed inlet; discharge outlet;
[0027] 200, stirring shaft; 210, stirring blade;
[0028] 300, nozzle; 310, electric valve; 320, manual valve;
[0029] 400, drive assembly;
[0030] 500. Connecting flange. DETAILED DESCRIPTION
[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0033] like Figure 1 and Figure 2As shown, the humidity regulating and stirring device provided by the embodiment of the utility model includes a main shell 100, a stirring shaft 200 and a nozzle 300. A accommodating cavity 110 is arranged in the main shell 100, a feed port 120 is arranged at the top of the main shell 100, and the feed port 120 is used to be connected with the outlet of the dry dust collector. A discharge port 130 is arranged at the bottom of the main shell 100; the stirring shaft 200 is rotatably arranged in the accommodating cavity 110, and extends from the feed port 120 to the discharge port 130, and stirring blades 210 are evenly spaced along the axial direction of the stirring shaft 200; the nozzle 300 is arranged at the top of the accommodating cavity 110, and sprays into the accommodating cavity 110.
[0034] That is, the humidity regulating and stirring device provided in the embodiment of the utility model sprays the dust discharged from the dry dust collector into the feed port 120 by setting a nozzle 300 at the top of the accommodating cavity 110, and at the same time stirs the dust through the stirring blades 210 on the stirring shaft 200 to make the dust moist and sticky, and then discharge it from the discharge port 130, thereby solving the problem that the pulverized coal separated by the dry dust collector will generate a large amount of secondary dust during the subsequent transfer and transportation process, thereby improving the environmental protection effect of the dry selection process in coal mines.
[0035] Specifically, the main housing 100 is configured to be welded from a stainless steel sheet, and is in an elongated shape as a whole. In order to ensure that the accommodating cavity 110 does not accumulate dust, the axis of the stirring shaft 200 coincides with the axis of the lower cavity, and the rotation radius of its stirring blade 210 is slightly smaller than the radius of the lower cavity. The stirring shaft 200 is specifically a stainless steel shaft, which is made by turning, and the stirring blade 210 can be in a willow-leaf shape or a knife-shaped shape, and is fixed on the stirring shaft 200 by welding. The stirring blades 210 are arranged in groups of two at an angle of 180° and are fixed on the stirring shaft 200 at intervals. Thus, the wet dust can be stirred by the stirring blades 210 rotating with the stirring shaft 200, so that the wet dust is sticky. The feed port 120 is square as a whole, welded and fixed to the top of one end of the main housing 100, and the discharge port 130 is square as a whole, welded and fixed to the bottom of the other end of the main housing 100. Thus, the wet and sticky dust can be discharged from the discharge port 130.
[0036] Furthermore, the main housing 100 has a U-shaped cross section along a direction perpendicular to its extension direction.
[0037] Specifically, the main housing 100 is entirely made of a thin plate. When the cross section of the main housing 100 perpendicular to its extension direction is U-shaped, the cross section of the receiving cavity 110 is also set to be U-shaped. When the cross section of the receiving cavity 110 is set to be U-shaped, it can be divided into an upper cavity with a rectangular cross section and a lower cavity with a semicircular cross section. The stirring shaft 200 is set at the bottom of the receiving cavity 110. The upper cavity of the receiving space has no stirring blade 210 and the squeezing effect of the material, which can buffer the powder material.
[0038] Furthermore, the stirring blade 210 is arranged at an angle of 15° to 60° with respect to the axial direction of the stirring shaft 200 .
[0039] Specifically, in this embodiment, the stirring blade 210 forms an angle of 30° with the axial direction of the stirring shaft 200. Thus, the stirring blade 210 can push the wet and sticky dust along the axial direction of the stirring shaft 200 during the rotation. The rotation direction of the stirring shaft 200 can be set according to the inclination angle of the stirring blade 210, so that the wet and sticky dust can move toward the discharge port 130, so as to discharge the wet and sticky dust from the discharge port 130, and avoid the wet and sticky dust from pushing in the receiving cavity 110, causing the clogging of the humidity control stirring device.
[0040] In other embodiments of the present invention, the stirring shaft 200 is provided with a stirring blade 210 which is arranged at an angle of 15° to 60° with respect to the axial direction of the stirring shaft 200 .
[0041] In other embodiments of the present invention, two stirring shafts 200 are provided, the two stirring shafts 200 are arranged in parallel, and the stirring blades of the two stirring shafts 200 are arranged opposite to each other.
[0042] Specifically, the two stirring shafts 200 are arranged in parallel at the same horizontal height in the accommodating cavity 110, and both of them extend from the feed port 120 to the discharge port, and the sum of their stirring diameters is slightly smaller than the radius of the lower half of the accommodating cavity 110. The stirring blades 210 on the two stirring shafts 200 are also arranged relatively, that is, the angles of the stirring blades 210 on the two stirring shafts 200 and the axial direction of the stirring shaft 200 are opposite. The two stirring shafts 200 can be meshed and connected by a gear set, so that the rotation directions of the two stirring shafts 200 are opposite. Therefore, when the two stirring shafts 200 rotate, they will jointly drive the wet and sticky dust to be discharged in the direction of the discharge port 130, thereby improving the dust conveying efficiency of the humidity regulating and stirring device.
[0043] Furthermore, the humidity controlling and stirring device also includes a driving component 400 and a connecting flange 500. The two connecting flanges 500 are respectively arranged at both ends of the stirring shaft 200 and connected to the stirring shaft 200. The driving component 400 is arranged at one end of the main shell 100 and is transmission-connected to one of the connecting flanges 500, and the other connecting flange 500 is rotationally connected to the main shell 100.
[0044] Specifically, in this embodiment, flanges coaxially arranged with the stirring shaft 200 are welded at both ends of the stirring shaft 200, and the two flanges are respectively connected to the two connecting flanges 500 by bolts. The driving member in the driving assembly 400 is set as a DC motor, and the DC motor can be fixed to one end of the main housing 100 by bolts. A through hole is opened on one side of the main housing 100 close to the feed port 120, and the output shaft of the DC motor extends into the through hole through a coupling, and a connecting shaft is provided on one of the connecting flanges 500, which can be connected to the output shaft of the driving assembly 400 through a coupling. A bearing is provided at the other end of the main housing 100, and a driven shaft is provided on the other connecting flange 500, which can be inserted into the bearing on the main housing 100, so that it is rotatably connected with the main housing 100 to cooperate with the other end of the fixed stirring shaft 200. Thus, the driving assembly 400 can be used to drive the stirring shaft 200 to rotate in the accommodating cavity 110, and the current and voltage of the DC motor can be controlled to control the rotation speed of the stirring shaft 200, thereby achieving stable and controllable operation of the humidity regulating and stirring device. At the same time, the two ends of the stirring shaft 200 are connected to the driving assembly 400 and the main shell 100 through the connecting flange 500, thereby reducing the difficulty of disassembly and assembly of the stirring shaft 200.
[0045] Furthermore, a plurality of nozzles 300 are disposed on one end of the main housing 100 close to the feed port 120 .
[0046] Specifically, in this embodiment, three nozzles 300 are provided, and the three nozzles 300 are arranged in sequence along the axial direction of the lower cavity. A corresponding mounting hole is provided on the main housing 100, and the nozzle 300 can extend from the mounting hole into the receiving cavity 110 in the main housing 100 to spray the dust in the receiving cavity 110. The three nozzles 300 spray simultaneously to form a liquid curtain in the receiving cavity 110 to ensure that the dust entering the receiving cavity 110 is completely wetted by the liquid mist, so as to improve the humidification effect of the humidity control and stirring device.
[0047] Furthermore, the humidity controlling and stirring device further includes an electric valve 310 , and the plurality of nozzles 300 are respectively connected to one end of the electric valve 310 , and the other end of the electric valve 310 is used to be connected to a liquid passage.
[0048] Specifically, a plurality of parallel pipelines are provided at one end of the electric valve 310, each pipeline is connected to a nozzle 300, and the other end of the electric valve 310 is connected to the liquid main passage. Thus, the nozzle 300 of the humidity control stirring device can be remotely controlled to spray by controlling the electric valve 310. When necessary, the receiving cavity 110, the stirring shaft 200 and the stirring blade 210 can be cleaned by spraying in advance.
[0049] Preferably, the humidity-controlling and stirring device further includes a manual valve 320 , and a plurality of manual valves 320 are arranged in one-to-one correspondence with the nozzles 300 , and the manual valve 320 is arranged between the nozzles 300 and the electric valve 310 .
[0050] Specifically, the manual valve 320 is arranged on the passage outside the nozzle 300, and a manual valve 320 is arranged on the passage between each nozzle 300 and the electric valve 310. By manually adjusting the switch of the manual valve 320, the number of nozzles 300 opened can be freely controlled, and then the amount of liquid sprayed in the humidity control stirring device can be adjusted. The more the number of nozzles 300 opened, the greater the amount of liquid sprayed by the nozzles. When the dust entering the receiving cavity 110 is large and the powder is dry, more manual valves 320 can be opened, so that multiple or even all nozzles 300 spray liquid in the receiving cavity to ensure the humidification effect of the humidity control stirring device on the dust. When the dust entering the receiving cavity 110 is small and the powder is wet, several manual valves 320 can be closed accordingly, so that a few nozzles 300 spray liquid in the receiving cavity, so as to save water resources as much as possible and reduce humidification costs.
[0051] Furthermore, the horizontal height of one end of the accommodating cavity 110 close to the discharge port 130 is higher than the horizontal height of one end of the accommodating cavity 110 close to the feed port 120 , and the height difference between the two is 0.5-2 times of the length of the rotating blade.
[0052] Specifically, the main housing 100 is placed at a certain angle so that the horizontal height of the end of the accommodating cavity 110 near the discharge port 130 is higher than the horizontal height of the end of the accommodating cavity 110 near the feed port 120. In this embodiment, the height difference between the horizontal height of the end of the accommodating cavity 110 near the discharge port 130 and the horizontal height of the end of the accommodating cavity 110 near the feed port 120 is the length of the rotating blade. In this way, it can be ensured that the liquid sprayed from the nozzle will not flow out of the discharge port 130, thereby ensuring the humidification effect of the humidity control and stirring device.
[0053] Another aspect of the utility model provides a coal dry sorting device, which includes the entire structure of the above-mentioned humidity control and stirring device, and has all the advantages of the above-mentioned humidity control and stirring device compared with the prior art, which will not be described in detail here.
[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A humidity control and stirring device, characterized in that: include: A main shell (100), wherein a receiving cavity (110) is provided in the main shell (100), a feed port (120) is provided at the top of the main shell (100), the feed port (120) is used to be connected to the outlet of the dry dust collector, and a discharge port (130) is provided at the bottom of the main shell (100); a stirring shaft (200), the stirring shaft (200) being rotatably disposed in the accommodating cavity (110) and extending from the feed port (120) to the discharge port (130), and stirring blades (210) being evenly spaced along the axial direction of the stirring shaft (200); A nozzle (300), the nozzle (300) being disposed at the top of the accommodating cavity (110) and spraying into the accommodating cavity (110); The horizontal height of one end of the accommodating cavity (110) close to the discharge port (130) is higher than the horizontal height of one end of the accommodating cavity (110) close to the feed port (120), and the height difference between the two is 0.5-2 times the length of the rotating blade.
2. The humidity control stirring device according to claim 1, characterized in that: The stirring blade (210) is arranged at an angle of 15° to 60° with respect to the axial direction of the stirring shaft (200).
3. The humidity control stirring device according to claim 1, characterized in that: One or two stirring shafts (200) are provided. When there are two stirring shafts (200), the two stirring shafts (200) are provided in parallel, and the stirring blades (210) of the two stirring shafts (200) are provided in opposite directions.
4. The humidity control stirring device according to claim 1, characterized in that: The humidity control stirring device further comprises a driving assembly (400) and a connecting flange (500), wherein the two connecting flanges (500) are respectively arranged at the two ends of the stirring shaft (200) and are connected to the stirring shaft (200), the driving assembly (400) is arranged at one end of the main shell (100) and is transmission-connected to one of the connecting flanges (500), and the other connecting flange (500) is rotationally connected to the main shell (100).
5. The humidity control and stirring device according to claim 1, characterized in that: The main housing (100) has a U-shaped cross section along a direction perpendicular to its extension direction.
6. The humidity control and stirring device according to any one of claims 1 to 5, characterized in that: The plurality of nozzles (300) are arranged on one end of the main housing (100) close to the feed port (120).
7. The humidity control and stirring device according to claim 6, characterized in that: The humidity control and stirring device further comprises an electric valve (310), the plurality of nozzles (300) are respectively connected to one end of the electric valve (310), and the other end of the electric valve (310) is used to be connected to a liquid passage.
8. The humidity control and stirring device according to claim 7, characterized in that: The humidity control and stirring device further comprises a manual valve (320), a plurality of the manual valves (320) are arranged in a one-to-one correspondence with the nozzles (300), and the manual valve (320) is arranged between the nozzles (300) and the electric valve (310).
9. A coal dry separation equipment, characterized in that: It comprises the humidity control and stirring device as described in any one of claims 1 to 8.