Downhole ventilating and cooling device capable of changing wind direction

Abstract

The utility model discloses an underground ventilating and cooling device capable of changing wind directions, which relates to the technical field of ventilating and cooling, and comprises an axial flow fan, an air pipe and an ice chamber wrapped on the outer side of the air pipe, the corrugated pipe is mounted at one end of the air outlet end of the air pipe and communicated with the air pipe; the steering device comprises a driving assembly, a traction rod and a connecting assembly. The driving assembly is mounted on the air pipe; the traction rod is mounted between the output end of the driving assembly and the connecting assembly and is shorter than the corrugated pipe; the connecting assembly is installed at the air outlet end of the corrugated pipe so as to change the traction point along with rotation of the traction rod. The steering device pulls the corrugated pipe to steer so as to guide airflow to steer, the steering device pulls an air outlet of the corrugated pipe to steer, and a traction point is changed along with rotation to ensure that the corrugated pipe is not wound; and the air flow is cooled through the ice chamber, so that the environment in the mine is cooled.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation and cooling technology, and specifically relates to a ventilation and cooling device with variable air direction for underground wells. Background Technology

[0002] When tunnels are being excavated in coal mines, the lack of air circulation at the working face prevents workers from breathing fresh air, which can lead to gas accumulation and even gas explosions over time. Therefore, to ensure the safety of the mine and its personnel, ventilation fans must be installed at the working face for ventilation.

[0003] However, most existing ventilation equipment is large and fixed, and the wind direction is relatively fixed and cannot be flexibly changed. When gas accumulates locally, it cannot be dissipated in time, causing danger. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a ventilation and cooling device with variable air direction in underground wells to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A variable-direction ventilation and cooling device for underground wells includes an axial flow fan and a duct. The axial flow fan is installed at the air inlet end of the duct. The device also includes an ice chamber wrapped around the outside of the duct. A corrugated pipe is installed at one end of the duct and communicates with the duct. A steering device includes a drive assembly, a traction rod, and a connecting assembly. The drive assembly is installed on the duct. The traction rod is installed between the output end of the drive assembly and the connecting assembly. The traction rod is shorter than the corrugated pipe. The connecting assembly is installed at the air outlet end of the corrugated pipe to change the traction point by following the rotation of the traction rod.

[0007] As a preferred technical solution, the rotation axis of the traction rod coincides with the central axis of the air duct.

[0008] As a preferred technical solution, the drive component is covered by a protective cover, and a fan is installed inside the protective cover.

[0009] As a preferred technical solution, the connecting assembly includes a connecting ring and a universal ball. The connecting ring is fixed on the outer wall of the air outlet end of the corrugated pipe, and the ball seat or ball of the universal ball slides around the connecting ring in a circumferential manner. The ball or ball seat of the universal ball is installed at the other end of the traction rod.

[0010] As a preferred technical solution, the connecting ring is provided with a sliding groove along the circumference. The sliding groove penetrates the outer wall of the connecting ring, and a sliding ball is movably installed in the sliding groove. The ball seat or ball of the universal ball is fixedly connected to the sliding ball through a connecting rod passing through the opening of the sliding groove.

[0011] As a preferred technical solution, a dense mesh is installed on the side of the axial flow fan near the duct.

[0012] As a preferred technical solution, it also includes an ice maker, with a through hole at the bottom of the ice chamber, and the ice chamber is connected to the water inlet pipe of the ice maker through the through hole and the guide pipe.

[0013] As a preferred technical solution, the bottom through-hole of the ice chamber includes multiple sets, and the multiple sets of through-holes are arranged along the length of the outer wall of the ice chamber.

[0014] As a preferred technical solution, a leak-proof mesh is installed on the through hole.

[0015] This invention designs a ventilation and cooling device for underground mines with variable airflow direction. The device guides the airflow by turning the corrugated pipe through a steering device. The steering device also turns the air outlet of the corrugated pipe and changes the traction point to ensure that the corrugated pipe does not become entangled. The device also cools the airflow through an ice chamber, thereby cooling the environment inside the mine.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 The present invention proposes a three-dimensional structure for a variable airflow ventilation and cooling device for underground wells. Figure One ;

[0018] Figure 2 This is a right view of a variable airflow ventilation and cooling device for underground wells proposed in this utility model;

[0019] Figure 3 The present invention proposes a three-dimensional structure for a variable airflow ventilation and cooling device for underground wells. Figure Two ;

[0020] Figure 4 The present invention proposes a three-dimensional structure for a variable airflow ventilation and cooling device for underground wells. Figure Three ;

[0021] Figure 5 for Figure 2 Cross-sectional view and enlarged view along the AA direction;

[0022] Figure 6 The present invention proposes a three-dimensional structure for a variable airflow ventilation and cooling device for underground wells. Figure Four .

[0023] Attached reference numerals: 1. Ice maker; 11. Drawer; 2. Ice chamber; 21. Cover; 22. Outer shell; 3. Axial flow fan; 4. Air duct; 5. Corrugated pipe; 6. Mesh screen; 7. Protective cover; 8. Branch pipe; 9. Main pipe;

[0024] 10. Steering mechanism;

[0025] 101. Drive assembly; 1011. Motor; 1012. Main gear; 1013. Secondary gear;

[0026] 102. Towing bar;

[0027] 103. Connecting component; 1031. Connecting ring; 1032. Sliding groove; 1033. Sliding ball; 1034. Universal ball. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] Example 1

[0030] refer to Figures 1 to 5 This embodiment describes a variable-direction ventilation and cooling device for underground mines, comprising an axial flow fan 3 and an air duct 4. The axial flow fan 3 is installed at the air inlet end of the air duct 4, and the airflow direction of the axial flow fan 3 is towards the air duct 4. A dense mesh 6 is installed at the connection between the axial flow fan 3 and the air duct 4 to prevent dust from being blown into the mine with the airflow and affecting the breathing quality of the workers. A corrugated pipe 5 is installed at the air outlet end of the air duct 4, and the corrugated pipe 5 is connected to the air duct 4. The device also includes a steering device 10, which includes a drive assembly 101, a traction rod 102, and a connecting assembly 103. The drive assembly 101 is installed on the air duct 4. One end of the traction rod 102 is installed on the output end of the drive assembly 101, and the other end is installed on the connecting assembly 103. The traction rod 102 is shorter than the corrugated pipe 5. The connecting assembly 103 is installed at the air outlet end of the corrugated pipe 5 to change the traction point as the traction rod 102 rotates.

[0031] During operation, the axial flow fan 3 blows air into the air duct 4. The airflow passes through the air duct 4 and the corrugated pipe 5 and flows into the mine. The drive assembly 101 drives the traction rod 102 to rotate around the central axis of the air duct 4. The traction rod 102 drives the air outlet end of the corrugated pipe 5 to rotate through the connecting assembly 103. In order to prevent the corrugated pipe 5 from getting tangled in the traction rod 102 when it rotates with the traction rod 102, the traction point of the air outlet end of the corrugated pipe 5 needs to change with the traction rod 102 when it rotates. Therefore, the connecting assembly 103 rotates relative to the traction rod 102, and the traction point of the connecting assembly 103 and the corrugated pipe 5 moves circumferentially around the corrugated pipe 5.

[0032] Preferably, the drive assembly 101 includes a motor 1011, a main gear 1012, and a secondary gear 1013. The motor 1011 is mounted on the air duct 4, the main gear 1012 is mounted on the output shaft of the motor 1011, and the secondary gear 1013 is rotatably mounted on the air outlet end of the air duct 4. The main gear 1012 and the secondary gear 1013 are meshed together, and the traction rod 102 is fixedly mounted on the side wall of the secondary gear 1013 near the bellows 5.

[0033] refer to Figure 6 Since gears are delicate components, dust entering between the main gear 1012 and the auxiliary gear 1013 can easily cause gear wear. Preferably, a protective cover 7 is also included. The protective cover 7 covers the drive assembly 101 to reduce dust entering between the gears. A fan is installed inside the protective cover 7. The fan can cool the drive assembly 101, improve working efficiency, and further reduce dust entering between the gears.

[0034] The connecting assembly 103 includes a connecting ring 1031 and a universal ball 1034. The connecting ring 1031 is fixed on the outer wall of the air outlet end of the bellows 5. The ball seat or ball of the universal ball 1034 slides around the connecting ring 1031 to change the position of the traction point. The ball or ball seat of the universal ball 1034 is mounted on the traction rod 102.

[0035] Preferably, the connecting ring 1031 has a sliding groove 1032 along its circumference, and an opening groove is formed on the outer wall of the connecting ring 1031 in the circumference direction. The opening groove passes through the sliding groove 1032 and the outside, and the height of the opening groove is less than that of the sliding groove 1032. A sliding ball 1033 is movably installed in the sliding groove 1032. The sliding ball 1033 is directly greater than the height of the opening groove and less than the height of the sliding groove 1032. The ball seat or ball of the universal ball 1034 is fixedly connected to the sliding ball 1033 through a connecting rod, and the connecting rod passes through the opening groove.

[0036] The 1034 omnidirectional ball is an existing structure and will not be described further.

[0037] As mines go deeper underground, the effects of geothermal heat become increasingly severe. In many mines below 500 meters, temperatures reach as high as 40 degrees Celsius, seriously impacting workers' health and work efficiency. Therefore, in addition to ventilation, cooling equipment is needed.

[0038] Therefore, an outer shell 22 is provided, which encloses the air duct 4. The sealed space between the air duct 4 and the outer shell 22 forms an ice chamber 2 for placing cooling materials. The cooling materials cool the airflow passing through the air duct 4, and the cooled airflow enters the mine, thus lowering the temperature inside the mine.

[0039] Preferably, the cooling material stored in the ice chamber 2 is ice. The top of the outer shell 22 has an ice outlet for easy placement of ice. The ice outlet is covered with a cover plate 21, and a handle is installed on the cover plate 21.

[0040] Resources are scarce in wells. If ice melts into water, additional ice needs to be imported from the outside, which is time-consuming, labor-intensive, and wasteful of resources. Therefore, the melted water can be collected, ice can be made, and reused, which saves resources, as well as transportation costs and time, and is suitable for downhole operations.

[0041] Specifically, the bottom of the outer shell 22 has multiple sets of through holes that connect to the ice chamber 2. The melted water flows out of the ice chamber 2 through the through holes. The multiple sets of through holes are arranged along the length of the outer shell 22. If there were only one through hole, the water might accumulate at the bottom of the ice chamber 2 and not be able to flow out. A leak-proof screen is installed on the through holes to prevent ice from falling out of the ice chamber 2.

[0042] It also includes an ice maker 1 and a guide pipe, with multiple through holes connected to the water inlet pipe of the ice maker 1 through the guide pipe.

[0043] Specifically, the guide pipe includes multiple branch pipes 8 and a main pipe 9. Each branch pipe 8 is installed below each group of through holes and is connected to the through holes. All multiple branch pipes 8 are connected to the main pipe 9, and the main pipe 9 is connected to the water inlet pipe of the ice maker 1.

[0044] The ice maker 1 is equipped with drawers 11 for storing and retrieving ice.

[0045] Working principle: Open the cover 21, put the ice cubes taken from drawer 11 into ice chamber 2, turn on the axial flow fan 3, the ice cubes in ice chamber 2 cool the airflow, and the low-temperature airflow passes through the air duct 4 and corrugated pipe 5 and blows into the well; when a change of direction is needed, motor 1011 starts to drive the main gear 1012 to rotate, the main gear 1012 drives the secondary gear 1013 to rotate around the central axis of air duct 4, the traction rod 102 follows the secondary gear 1013 to rotate, and the traction rod 102 drives the universal ball. When 1034 rotates, the ball of the universal ball 1034 and the ball seat roll relative to each other. The universal ball 1034 drives the sliding ball 1033 to slide in the sliding groove 1032 through the connecting rod. The sliding ball 1033 pulls the air outlet of the bellows 5 to follow the direction of the traction rod 102. Because of the change of the traction point, the bellows 5 will not get tangled. After the ice melts into water, it flows into the main flow pipe 9 through the branch pipe 8, and then flows into the ice maker 1 from the main flow pipe 9. The ice maker 1 recycles the wastewater.

[0046] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A variable-direction ventilation and cooling device for underground wells, comprising an axial flow fan (3) and a duct (4), wherein the axial flow fan (3) is installed at the air inlet end of the duct (4), characterized in that: Also includes: Ice room (2), wrapped around the outside of air duct (4); A corrugated pipe (5) is installed at one end of the air outlet of the air duct (4) and connected to the air duct (4); Steering device (10) includes drive assembly (101), drawbar (102) and connection assembly (103); The drive assembly (101) is mounted on the air duct (4); The traction rod (102) is installed between the output end of the drive assembly (101) and the connecting assembly (103), and the traction rod (102) is shorter than the bellows (5); The connecting assembly (103) is installed at the air outlet of the bellows (5) to change the traction point as the traction rod (102) rotates.

2. The downhole variable airflow ventilation and cooling device according to claim 1, characterized in that: The rotation axis of the traction rod (102) coincides with the central axis of the air duct (4).

3. The downhole variable airflow ventilation and cooling device according to claim 1, characterized in that: The drive assembly (101) is covered by a protective cover (7), and a fan is installed inside the protective cover (7).

4. The downhole variable airflow ventilation and cooling device according to claim 1, characterized in that: The connecting assembly (103) includes a connecting ring (1031) and a universal ball (1034). The connecting ring (1031) is fixed on the outer wall of the air outlet of the bellows (5). The ball seat or ball of the universal ball (1034) slides around the connecting ring (1031) in a circumferential direction. The ball or ball seat of the universal ball (1034) is installed at the other end of the traction rod (102).

5. The underground variable airflow ventilation and cooling device according to claim 4, characterized in that: The connecting ring (1031) has a sliding groove (1032) along the circumference. The sliding groove (1032) passes through the outer wall of the connecting ring (1031). A sliding ball (1033) is movably installed in the sliding groove (1032). The ball seat or ball of the universal ball (1034) is fixedly connected to the sliding ball (1033) through a connecting rod passing through the opening of the sliding groove (1032).

6. The downhole variable airflow ventilation and cooling device according to claim 1, characterized in that: A dense mesh (6) is installed on the side of the axial flow fan (3) near the air duct (4).

7. The downhole variable airflow ventilation and cooling device according to any one of claims 1-6, characterized in that: It also includes an ice maker (1), with a through hole at the bottom of the ice chamber (2), and the ice chamber (2) is connected to the water inlet pipe of the ice maker (1) through the through hole and the guide pipe.

8. The downhole variable airflow ventilation and cooling device according to claim 7, characterized in that: The bottom through holes of the ice chamber (2) include multiple sets, which are arranged along the length of the outer wall of the ice chamber (2).

9. The downhole variable airflow ventilation and cooling device according to claim 7, characterized in that: A leak-proof mesh is installed on the through hole.

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