Mine return air wellhead demisting device
Through the design of the mines to return to the wind well, the fog device is used, and the centrifugal force generated by rotation and the design of the drainage cover is used to solve the problem of large fogging and humid air circulation of the backwind wells, and achieve the dual targets of remodeling effect and smooth exhaust.
Patent Information
- Application Number
- CN202421648032.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The fog at the entrance of the return air well is large, causing the surrounding people to mistakenly think that fires are frequently reported. The installation of defog decoupling plates in existing defog devices will block the flow path of humid and hot air and affect the smooth exhaust.
Design a mines to return the windy wells, including drainage hoods, radiation pipes, dehumidification pipes, and dehumidification mechanisms. It uses the centrifugal force generated by rotation to reduce the humidity of the humid and humid air, and avoid blocking the flow of humid and humid air to avoid blocking.
Effectively suppress the generation of white fog, ensure the smooth exhaust of the wind well, avoid mistakenly reporting the fire alarm, and at the same time reduce energy consumption and improve the dehumidification effect.
Smart Images
Figure CN222414930U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of mining ventilation equipment, and in particular, relates to a mine return air wellhead demisting device. Background Art
[0002] The winter climate is usually cold and dry. During the underground mineral mining process, the underground temperature and humidity are usually significantly higher than the surface. When the underground hot and humid air is discharged to the surface through the return air well, it comes into contact with the surface atmosphere, which can easily cause the water vapor in the air to condense quickly and form white fog. In addition, due to the high wind speed at the return air well mouth (the maximum wind speed can reach 8m / s), a columnar white fog similar to a chimney will form along the wind direction, which can easily cause the surrounding people to mistakenly believe that a fire has occurred and frequently report the fire alarm.
[0003] The fogging phenomenon in the return air shaft is essentially caused by the condensation of water vapor. Therefore, reducing the humidity of the hot and humid air in the well can effectively suppress the fogging phenomenon. The current demisting device is generally installed by installing a demisting plate. By installing multiple demisting plates at the return air wellhead, the hot and humid air in the well contacts the demisting plates, so that the water vapor condenses into water droplets on the demisting plates, reducing the humidity of the hot and humid air and achieving the demisting effect.
[0004] However, installing a defogger plate will block the flow path of the hot and humid air in the return air shaft, thereby increasing wind resistance and affecting the normal discharge of the hot and humid air underground. Summary of the invention
[0005] In order to solve the above problems, the present application proposes a mine return air wellhead demisting device, which aims to solve the technical problem of heavy fog at the return air wellhead.
[0006] To achieve the above-mentioned purpose, in some schemes of the present application, a mine return air shaft demisting device is provided, including a drainage hood, a jet tube, a dehumidification pipe, a dehumidification mechanism, and a fixed frame. The drainage hood is fixedly installed at the return air shaft, and a jet tube is installed directly above the drainage hood. The top of the jet tube is fixedly connected to the dehumidification pipe. A dehumidification mechanism for water vapor separation is installed in the dehumidification pipe, and the jet tube and the dehumidification pipe are fixedly connected to the ground through a fixed frame.
[0007] Specifically, the dehumidification mechanism includes a motor, a driving shaft, a driving gear, a lower shaft, a lower gear, a lower fan blade, an upper shaft, an upper gear, an upper fan blade, and a bracket. The motor is fixedly installed on the outside of the dehumidification tube, and the output shaft of the motor is fixedly connected to the driving shaft. After the driving shaft is extended into the dehumidification tube, the end thereof is fixedly connected to the driving gear; the lower shaft is installed at the axis center in the dehumidification tube along the vertical rotation, and the lower fan blade is fixedly connected to the bottom of the lower shaft, and the lower gear meshing with the driving gear is fixedly connected to the top of the lower shaft; the upper shaft is installed at the axis center in the dehumidification tube along the vertical rotation, and the upper gear meshing with the driving gear is fixedly connected to the bottom of the upper shaft, and the upper fan blade is fixedly connected to the top of the upper shaft.
[0008] Furthermore, the rotation direction of the lower blade is opposite to that of the upper blade.
[0009] In some embodiments, a gap is left between the guide cover and the jet tube to facilitate the passage of air.
[0010] In some schemes, a first water collecting trough is provided at the bottom of the jet tube, and a first drain outlet corresponding to the first water collecting trough is opened on the wall of the jet tube. A second water collecting trough is provided at the bottom of the dehumidification tube, and a second drain outlet corresponding to the second water collecting trough is opened on the wall of the dehumidification tube. The first drain outlet and the second drain outlet are both connected to the drain pipe.
[0011] In some embodiments, the jet tube is a tubular structure that is thick at both ends and thin in the middle, and the diameter change portion of the tube wall is chamfered to form a first rounded corner.
[0012] In some embodiments, the dehumidification tube is a tubular structure with a thick bottom portion and a thin body portion, and the portion where the tube wall changes diameter is chamfered to form a second rounded corner.
[0013] In some solutions, an exhaust pipe is fixedly connected to the top of the dehumidification pipe, and the exhaust pipe is a right-angle elbow.
[0014] Beneficial effects of this application:
[0015] The present application installs a rotary defogger mechanism and utilizes the centrifugal force generated by the rotation to reduce the humidity of the hot and humid air, thereby suppressing the generation of white fog. At the same time, the defogger mechanism can guide the hot and humid air during the rotation process to avoid blocking the flow path of the hot and humid air and ensure smooth exhaust of the return air shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. It is obvious that the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 It is a structural diagram of a mine return air shaft demisting device;
[0018] Figure 2 It is a schematic diagram of the local structure in this application;
[0019] Figure 3 It is a schematic diagram of the structure of the dehumidification mechanism in this application;
[0020] Figure 4 It is a schematic diagram of the structure of the dehumidification mechanism in this application;
[0021] Figure 5 It is a schematic diagram of the dehumidification mechanism structure in this application.
[0022] In the figure, 1- drainage cover, 2- jet pipe, 201- first water collecting tank, 202- first drain outlet, 203- first fillet, 3- dehumidification pipe, 301- second water collecting tank, 302- second drain outlet, 303- second fillet, 4- exhaust pipe;
[0023] 5-dehumidification mechanism, 501-motor, 502-driving shaft, 503-driving gear, 504-lower gear, 505-lower shaft, 506-lower fan blade, 507-upper gear, 508-upper shaft, 509-upper fan blade, 510-bracket, 511-mounting plate;
[0024] 6-drain pipe, 7-first fixing ring, 8-second fixing ring, 9-fixing frame, 10-return air shaft, 11-gap. DETAILED DESCRIPTION
[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0028] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0029] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0030] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
[0031] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
[0032] See also Figure 1 The present application provides a demisting device for a mine return air shaft, including a drainage hood 1, a jet pipe 2, a dehumidification pipe 3, a dehumidification mechanism 5, and a fixed frame 9. The drainage hood 1 is fixedly installed at the mouth of the return air shaft 10, and the drainage hood 1 is a trumpet-shaped structure with a small top and a large bottom. The drainage hood 1 makes the hot and humid air blown out of the return air shaft 10 more concentrated, and guides the flow direction of the hot and humid air, which is convenient for the subsequent dehumidification of the hot and humid air. A jet pipe 2 is installed directly above the drainage hood 1, and the top of the jet pipe 2 is fixedly connected to the dehumidification pipe 3. A dehumidification mechanism 5 for water vapor separation is installed in the dehumidification pipe 3, and a first fixed ring 7 is fixedly connected to the outside of the jet pipe 2, and a second fixed ring 8 is fixedly connected to the outside of the dehumidification pipe 3. The first fixed ring 7 and the second fixed ring 8 are both fixedly connected to the fixed frame 9, and the fixed frame 9 is fixedly installed on the ground.
[0033] In some embodiments, Figure 4 , Figure 5 As shown, the dehumidification mechanism 5 includes a motor 501, a driving shaft 502, a driving gear 503, a lower gear 504, a lower shaft 505, a lower fan blade 506, an upper gear 507, an upper shaft 508, an upper fan blade 509, and a bracket 510. A mounting plate 511 is fixedly connected to the outer wall of the dehumidification tube 3. The motor 501 is fixedly installed on the mounting plate 511 in the horizontal direction, and its output shaft is fixedly connected to the driving shaft 502 through a coupling. The driving shaft 502 penetrates into the dehumidification tube 3 in the horizontal direction, and a driving gear 503 is fixedly connected to the end of the driving shaft 502. Two sets of upper and lower brackets 510 are fixedly installed in the dehumidification tube 3. A lower shaft 505 is vertically rotatably installed on the bracket 510 close to the lower side. The axis of the lower shaft 505 coincides with the axis of the dehumidification tube 3, and a lower fan blade 506 is fixedly connected to the bottom of the lower shaft 505, and a lower gear 504 meshing with the driving gear 503 is fixedly connected to the top of the lower shaft 505; an upper shaft 508 is vertically rotatably installed on the bracket 510 close to the upper side. The axis of the upper shaft 508 coincides with the axis of the dehumidification tube 3, and an upper gear 507 meshing with the driving gear 503 is fixedly connected to the bottom of the upper shaft 508, and an upper fan blade 509 is fixedly connected to the top of the upper shaft 508. The rotation direction of the lower fan blade 506 is opposite to that of the upper fan blade 509. Figure 4 As shown, when the motor 501 is started, the driving shaft 502 drives the driving gear 503 to rotate, so that the lower gear 504 rotates counterclockwise, and the upper gear 507 rotates clockwise. The hot and humid air enters from the bottom of the dehumidification tube 3. When passing through the lower blade 506 and the upper blade 509, the water vapor will condense into small water droplets on the blades. The small water droplets are thrown onto the inner wall of the dehumidification tube 3 under the action of centrifugal force, reducing the humidity of the hot and humid air, thereby inhibiting the generation of white fog. The present application can drive two sets of blades to rotate through a motor 501 to achieve two-stage dehumidification, reduce energy consumption, and improve the dehumidification effect. At the same time, the lower blade 506 and the upper blade 509 will generate negative pressure at the bottom of the dehumidification tube 3 during the rotation process. The hot and humid air can quickly flow to the two blades under the action of negative pressure, avoiding blocking the flow path of the hot and humid air and ensuring smooth exhaust of the return air shaft.
[0034] In some embodiments, Figure 3 As shown, a gap 11 is left between the drainage hood 1 and the jet tube 2 for air to pass through, and the jet tube 2 is a tubular structure with thick ends and a thin middle. When the humid hot air passes through the drainage hood 1 and enters the jet tube 2, the flow velocity will be increased at the diameter-changing section in the middle of the jet tube 2, thereby generating a negative pressure at the bottom of the jet tube 2. The dry and cold air on the surface can be absorbed through the gap 11, so that the dry and cold air and the humid hot air are mixed in the jet tube 2, and the humid hot air is cooled, so that the humid hot air first condenses into fine water droplets in the jet tube 2. When the fine water droplets subsequently pass through the dehumidification mechanism 5, they are more likely to adhere to the blades of the lower fan blade 506 and the upper fan blade 509, thereby improving the dehumidification effect.
[0035] In some embodiments, Figure 2-5 As shown, a first water collecting trough 201 is provided at the bottom of the jet tube 2, and a first drain port 202 corresponding to the first water collecting trough 201 is provided on the tube wall of the jet tube 2, a second water collecting trough 301 is provided at the bottom of the dehumidification tube 3, and a second drain port 302 corresponding to the second water collecting trough 301 is provided on the tube wall of the dehumidification tube 3, the first drain port 202 and the second drain port 302 are both connected to the drain pipe 6, and the drain pipe 6 is connected to the external sewage treatment tank. The jet tube 2 and the dehumidification tube 3 are preferably made of stainless steel. Since the water vapor in the jet tube 2 and the dehumidification tube 3 is heavy, the use of stainless steel can effectively prevent rust. At the same time, stainless steel has strong thermal conductivity. When the climate is cold, the jet tube 2 and the dehumidification tube 3 can be kept at a lower temperature, which helps the water vapor in the hot and humid air condense into small water droplets, thereby improving the dehumidification effect. When the hot and humid air passes through the jet tube 2, part of the water vapor will condense into small water droplets on the inner wall of the jet tube 2. After the small water droplets accumulate, they will slide down along the inner wall into the first water collecting tank 201 and enter the drain pipe 6 from the first drain port 202. When the hot and humid air passes through the dehumidification tube 3, the water vapor is separated by the dehumidification mechanism 5, the gas part is discharged normally, and the water vapor part will adhere to the lower blade 506 and the upper blade 509, and be thrown to the inner wall of the dehumidification tube 3 as the blades rotate. When the small water droplets on the inner wall of the dehumidification tube 3 accumulate into larger water droplets, the larger water droplets slide down into the second water collecting tank 301 under the action of gravity and enter the drain pipe 6 from the second drain port 302. The condensed water droplets can be uniformly collected and processed by the first water collecting tank 201 and the second water collecting tank 301 to prevent the water droplets from scattering everywhere and affecting the surrounding environment.
[0036] In some embodiments, Figure 2 , Figure 3 As shown in FIG. 1 , the diameter change portion of the jet tube 2 is chamfered to form a first rounded corner 203. Figure 5 As shown, the dehumidification pipe 3 is a tubular structure with a thick bottom part and a thin body part, so that a second water collecting tank 301 is set at a position at the bottom of the dehumidification pipe 3 to prevent the second water collecting tank 301 from blocking the flow path of the humid and hot air, and the pipe wall is rounded at the diameter change to form a second rounded corner 303. Through the first rounded corner 203, it is convenient for water drops to pass through the diameter change of the jet pipe 2 when sliding down and enter the first water collecting tank 201; through the second rounded corner 303, it is convenient for water drops to pass through the diameter change of the dehumidification pipe 3 when sliding down and enter the second water collecting tank 301.
[0037] In some embodiments, an exhaust pipe 4 is fixedly connected to the top of the dehumidification pipe 3. The exhaust pipe 4 is a right-angle bend pipe to prevent debris from falling into the dehumidification pipe 3 from above and protect the lower blades 506 and the upper blades 509 of the dehumidification mechanism 5.
[0038] Working process of this application:
[0039] The drainage cover 1 is fixedly installed at the wellhead of the return air shaft 10, and the jet pipe 2 and the dehumidification pipe 3 are set up directly above the drainage cover 1 through the fixing frame 9. When in use, the motor 501 is started to drive the lower blade 506 and the upper blade 509 to rotate. When the hot and humid air in the well is ejected from the wellhead of the return air shaft 10, the drainage cover 1 first guides the hot and humid air to the jet pipe 2. Since the air flow velocity at the diameter change point of the jet pipe 2 increases, negative pressure will be formed at the bottom of the jet pipe 2, thereby absorbing the dry and cold air on the surface through the gap 11, so that the dry and cold air and the hot and humid air are mixed in the jet pipe 2, the hot and humid air is cooled, and the hot and humid air condenses into fine water droplets. At the same time, the hot and humid air and the inner wall of the jet pipe 2 are Contact will also condense water droplets, completing the initial dehumidification; after the humid hot air continues to rise and enters the dehumidification tube 3, it passes through the dehumidification mechanism 5 for secondary dehumidification, and the gas part of the humid hot air normally passes through the rotating lower fan blades 506 and the upper fan blades 509. When the water vapor part contacts the fan blades, small water droplets will condense on the fan blades. As the fan blades rotate, the small water droplets are thrown to the inner wall of the dehumidification tube 3 under the action of centrifugal force. When the small water droplets accumulate into large water droplets, they slide into the second water collecting tank 301 under the action of gravity, and enter the drain pipe 6 from the second drain port 302.
[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application; the dimensions of the drawings are not related to the specific objects, and the dimensions of the objects can be changed arbitrarily.
Claims
1. A mine return air wellhead demisting device, characterized in that: The mine return air wellhead demisting device comprises a drainage hood, a jet pipe, a dehumidification pipe, a dehumidification mechanism, and a fixed frame. The drainage hood is fixedly installed at the return air wellhead, a jet pipe is installed directly above the drainage hood, the top of the jet pipe is fixedly connected to the dehumidification pipe, a dehumidification mechanism for water vapor separation is installed in the dehumidification pipe, and the jet pipe and the dehumidification pipe are fixedly connected to the ground through the fixed frame; The dehumidification mechanism includes a motor, a driving shaft, a driving gear, a lower shaft, a lower gear, a lower fan blade, an upper shaft, an upper gear, an upper fan blade, and a bracket. The motor is fixedly installed on the outside of the dehumidification pipe, and the output shaft of the motor is fixedly connected to the driving shaft. After the driving shaft is extended into the dehumidification pipe, the end of the driving shaft is fixedly connected to the driving gear; the lower shaft is installed at the axis center in the dehumidification pipe along the vertical rotation, and the lower fan blade is fixedly connected to the bottom of the lower shaft, and the lower gear meshing with the driving gear is fixedly connected to the top of the lower shaft; the upper shaft is installed at the axis center in the dehumidification pipe along the vertical rotation, and the upper gear meshing with the driving gear is fixedly connected to the bottom of the upper shaft, and the upper fan blade is fixedly connected to the top of the upper shaft.
2. The mine return air wellhead demisting device according to claim 1 is characterized in that: The rotation direction of the lower blade is opposite to that of the upper blade.
3. The mine return air wellhead demisting device according to claim 1 or 2, characterized in that: A gap is left between the drainage cover and the jet tube to facilitate air to pass through.
4. The mine return air wellhead demisting device according to claim 3 is characterized in that: A first water collecting trough is provided at the bottom of the jet tube, and a first drain outlet corresponding to the first water collecting trough is opened on the wall of the jet tube. A second water collecting trough is provided at the bottom of the dehumidification tube, and a second drain outlet corresponding to the second water collecting trough is opened on the wall of the dehumidification tube. Both the first drain outlet and the second drain outlet are connected to the drain pipe.
5. The mine return air wellhead demisting device according to claim 1 or 4, characterized in that: The jet tube is a tubular structure with thick ends and a thin middle, and the diameter change portion of the tube wall is chamfered to form a first rounded corner.
6. The mine return air wellhead demisting device according to claim 5 is characterized in that: The dehumidification tube is a tubular structure with a thick bottom portion and a thin body portion, and the diameter change portion of the tube wall is chamfered to form a second rounded corner.
7. The mine return air wellhead demisting device according to claim 6 is characterized in that: The top of the dehumidification pipe is fixedly connected with an exhaust pipe, and the exhaust pipe is a right-angle elbow pipe.