A mine wellhead antifreeze device based on ultra-low temperature phase change heat transfer material

Abstract

The present invention relates to the technical field of mine wellhead antifreeze, and in particular to a mine wellhead antifreeze device based on ultra-low temperature phase change heat transfer material. It comprises: a shell, the shell is fixedly connected to a plurality of fixed rings, the shell is rotatably connected to a fan; a filter screen, the number of which is the same as the number of the fixed rings, and the filter screen is rotatably connected to the adjacent fixed rings, and the filter screen is fixedly connected to the rotating shaft of the adjacent fan; a rotating drum, which is rotatably connected to the rotating shaft of the adjacent fan. The present invention releases the absorbed heat into the mine through the ultra-low temperature phase change heat transfer material to realize the heating inside the mine, and uses the filter screen to block the external dust. At the same time, the rotating shaft of the fan drives the filter screen to rotate, and throws the dust off the filter screen to reduce the amount of dust adhesion on the filter screen, thereby preventing the air duct of the filter screen and the fan from being blocked, which affects the efficiency of the heat exchange material in absorbing heat in the air.

Description

Technical Field

[0001] The present invention relates to the technical field of mine wellhead antifreeze, and in particular to a mine wellhead antifreeze device based on an ultra-low temperature phase change heat transfer material. Background Art

[0002] Mine wellhead antifreeze equipment is a device that can use the heat in the air to heat the inside of the mine. Its principle is to use a fan to guide the air containing heat to the heat exchange material, so that the heat exchange material absorbs the heat in the external environment, and then use the reverse Carnot cycle system to conduct the heat carried by the heat exchange material into the mine to achieve heating and antifreeze of the mine. In the existing mine wellhead antifreeze equipment, in order to better enable the heat exchange material to absorb external heat, the fan that guides the external air will be placed outdoors. The air near the mine has a high dust content, which easily causes dust to enter and accumulate in the fan's air duct, causing the fan's air duct to be blocked by dust, thereby reducing the air flow entering the equipment, causing the heat exchange material to reduce the efficiency of absorbing heat in the air, thereby affecting the efficiency of mine antifreeze. Summary of the Invention

[0003] In order to overcome the shortcomings pointed out in the above background technology, the present invention provides a mine wellhead antifreeze device based on ultra-low temperature phase change heat transfer material.

[0004] The technical solution of the present invention is: a mine wellhead antifreeze device based on ultra-low temperature phase change heat transfer material, comprising:

[0005] A housing, wherein the housing is fixedly connected to a plurality of fixing rings, and the housing is rotatably connected to fans having the same number as the fixing rings, the fans being located in adjacent fixing rings, and the fans being fixedly connected to the output shaft of the external motor via their rotating shafts;

[0006] The number of the filter screens is the same as the number of the fixing rings, and the filter screens are rotatably connected to adjacent fixing rings, and the filter screens are fixedly connected to the rotating shafts of the adjacent fans;

[0007] The number of the rotating drums is the same as that of the fans, and the rotating drums are respectively rotatably connected to the rotating shafts of the adjacent fans. The rotating drums are fixed with a plurality of flexible plates, and the flexible plates are squeezed and matched with the adjacent filter screens.

[0008] Preferably, the rotation shaft of the fan and the adjacent rotating drum are transmitted via a gear set, and the gear set is used to form a rotation speed difference between the rotation shafts of adjacent fans and the adjacent rotating drums.

[0009] As an option, it also includes:

[0010] The number of elastic sheets is the same as that of the flexible plates, and they are respectively fixed to the adjacent flexible plates. The elastic sheets are provided with a first inclined surface. The fixing ring is fixed with a plurality of circumferentially distributed wedge blocks, and the wedge blocks are provided with a second inclined surface. The first inclined surface of the elastic sheet is squeezed and matched with the second inclined surface of the wedge block, and the elastic sheet is used to impact the adjacent filter screen.

[0011] Preferably, the side of the wedge-shaped block facing away from the second inclined surface thereof does not contact the adjacent elastic sheet.

[0012] Preferably, the vertical cross-section of the filter screen is arc-shaped, and the elastic sheet is in contact with and cooperates with the adjacent filter screen.

[0013] As an option, it also includes:

[0014] There are a plurality of first hydraulic telescopic rods, each of which is fixedly connected to the adjacent filter screens;

[0015] The number of the covering covers is the same as the number of the filter screens, and the covering covers are respectively fixed to the telescopic ends of the first hydraulic telescopic rods on adjacent filter screens. The covering covers are provided with circumferentially distributed notches.

[0016] As an option, it also includes:

[0017] The guide plates, the number of which is the same as the notches, are respectively fixed to adjacent covering covers, and the guide plates are located between two adjacent notches.

[0018] Preferably, the flow area between the fixing ring and the adjacent covering cover is not less than the flow area of ​​the filter screen.

[0019] As an option, it also includes:

[0020] Support brackets, the number of which is the same as the number of the first hydraulic telescopic rods, and respectively fixed to the fixing portions of adjacent first hydraulic telescopic rods;

[0021] The number of the second hydraulic telescopic rods is the same as the number of the support frames, and they are respectively fixed to the adjacent support frames. The first hydraulic telescopic rod is connected to the adjacent second hydraulic telescopic rod through a conduit. The telescopic end of the second hydraulic telescopic rod is fixed with a weight block, and the weight block is slidably connected to the adjacent support frame. An elastic member is fixed between the weight block and the adjacent support frame.

[0022] Preferably, the horizontal distance between the lower portion of the cover and the adjacent fixing ring gradually increases from top to bottom.

[0023] In summary, the present application has at least one of the following beneficial technical effects: 1. The present invention releases the absorbed heat into the mine through the ultra-low temperature phase change heat transfer material to achieve internal heating of the mine, and uses the filter to block external dust. At the same time, the fan shaft drives the filter to rotate, throwing dust off the filter to reduce the amount of dust adhering to the filter, thereby preventing the filter and the fan from being blocked in the air duct, which would affect the efficiency of the heat transfer material in absorbing heat from the air;

[0024] 2. The elastic sheet and the flexible plate are used to knock the lower side of the filter, so that the impurities and dust adhering to the filter are knocked off. As the filter rotates, the stubborn impurities are thrown off the filter, thereby reducing the probability of sticky impurities and moist dust adhering to the filter, thereby preventing the filter from being blocked and affecting the efficiency of the device in antifreezing the mine.

[0025] 3. Use a cover to shield the filter to reduce the probability of external debris (such as branches or ice and snow) accumulating on the filter, thereby reducing the probability of branches and other impurities passing through the filter and getting stuck in the fan, thereby preventing the fan from being stuck by branches and causing damage to the device, which will affect the anti-freeze effect of the mine;

[0026] 4. The cover is driven upward by the telescopic end of the first hydraulic telescopic rod, so that the area available for airflow between the fixed ring and the cover is increased, thereby realizing adaptive adjustment of the gas flow area between the fixed ring and the cover to prevent the area available for airflow between the fixed ring and the cover from being insufficient after the fan speed increases, resulting in insufficient air entering the filter and affecting the wind guiding effect of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 is a sectional view of the three-dimensional structure of the housing of the present invention;

[0029] Figure 3 It is a sectional view of the three-dimensional structure of the fixing ring of the present invention;

[0030] Figure 4 This is a sectional view of the three-dimensional structure of the filter screen of the present invention;

[0031] Figure 5 Schematic diagram of the three-dimensional structure of the flexible board of the present invention;

[0032] Figure 6 A sectional view of the three-dimensional structure of the cover of the present invention;

[0033] Figure 7 Schematic diagram of the three-dimensional structure of the guide plate of the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the support frame of the present invention.

[0035] Markings in the accompanying drawings: 1: housing, 101: fixing ring, 102: fan, 2: filter, 3: drum, 301: flexible plate, 4: gear set, 5: elastic sheet, 501: wedge block, 6: first hydraulic telescopic rod, 7: cover, 701: notch, 8: guide plate, 9: support frame, 901: second hydraulic telescopic rod, 902: weight block. DETAILED DESCRIPTION

[0036] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0037] To prevent external dust from adhering to the filter and causing the filter and fan air duct to be blocked, Figure 1-Figure 5 As shown, the present invention proposes a mine wellhead antifreeze device based on ultra-low temperature phase change heat transfer material, comprising: an outer shell 1, the outer shell 1 is provided with a remote intelligent centralized control system and a reverse Carnot cycle system not shown in the figure, an external pipe connected to the inner shell 1 is provided, wherein an ultra-low temperature phase change heat transfer material can be arranged in the external pipe to absorb heat from the external environment, and then the ultra-low temperature phase change heat transfer material releases the absorbed heat into the mine, thereby realizing heating inside the mine to achieve antifreeze of the mine, the outer shell 1 is fixed with a plurality of fixed rings 101, and the outer shell 1 is rotatably connected with the same number of fans 102 as the fixed rings 101, and the fans 102 are located in adjacent fixed rings 101, and the fans 102 are fixed with the output shaft of the external motor through their rotating shaft, and the external motor is electrically connected to the remote intelligent centralized control system to control the opening and closing and speed of the external motor; the number of filters 2 is the same as the number of fixed rings 101, and they are respectively rotatably connected to the adjacent fixed rings 101, and the rotation of the filters 2 and the adjacent fans 102 is The shaft is fixed, and the filter 2 is used to block external dust to reduce the probability of external dust entering the fixed ring 101 and causing the air duct inside it to be blocked, and the rotating shaft of the fan 102 can drive the filter 2 to rotate to throw dust off the filter 2; the number of the rotating drum 3 is the same as the number of the fans 102, and they are respectively rotatably connected to the rotating shafts of adjacent fans 102. The rotating drum 3 is fixed with a plurality of flexible plates 301, and the flexible plates 301 are in contact with the adjacent filter 2. The rotating shafts of the fans 102 and the adjacent rotating drums 3 are transmitted through a gear set 4. The gear set 4 consists of a first gear on the lower right, a second gear on the lower left, a third gear on the upper left, and a fourth gear on the upper right. The first gear is fixed to the rotating shaft of the adjacent fan 102, the fourth gear is fixed to the adjacent rotating drum 3, the second gear is coaxially connected to the third gear, the number of teeth of the second gear is greater than that of the first gear, and the number of teeth of the fourth gear is greater than that of the third gear. The gear set 4 is used to form a speed difference between the rotating shafts of adjacent fans 102 and the adjacent rotating drums 3.

[0038] The specific working principle is as follows:

[0039] When the operator needs to use this device to prevent freezing of the mine, the operator installs the device at the required location, and then starts the external motor through the remote intelligent centralized control system. The output shaft of the external motor drives the fan 102 to rotate through the rotating shaft. The fan 102 introduces external air into the external pipe of the outer shell 1. The ultra-low temperature phase change heat transfer material absorbs the heat from the external environment, and then the ultra-low temperature phase change heat transfer material releases the absorbed heat into the mine, thereby realizing heating inside the mine to achieve anti-freezing of the mine.

[0040] During the rotation of the fan 102, the fan 102 drives the filter 2 to rotate through its rotating shaft, throws dust away from the filter 2, and reduces the amount of dust adhering to the filter 2. At the same time, the rotating shaft of the fan 102 drives the rotating drum 3 to rotate through the gear set 4, and the rotating drum 3 drives all the flexible plates 301 thereon to rotate. There is a speed difference between the flexible plates 301 and the filter 2, which causes friction between the flexible plates 301 and the filter 2. The flexible plates 301 are deformed to wipe the filter 2 (and the operator can also set a brush on the flexible plate 301 to wipe the dust on the filter 2), further reducing the amount of dust adhering to the filter 2.

[0041] When the operator stops using the device, the operator can turn off the external motor through the remote intelligent centralized control system.

[0042] In order to prevent sticky impurities and wet dust from adhering to the filter 2, Figure 4 and Figure 5 As shown, the present invention also includes: elastic sheets 5, the number of which is the same as the number of flexible plates 301, which are respectively fixed to adjacent flexible plates 301, and the material of the flexible plates 301 can be rubber. The elastic sheet 5 is provided with a first inclined surface, and the fixing ring 101 is fixed with a plurality of wedge blocks 501 distributed circumferentially, and the wedge blocks 501 are provided with a second inclined surface. The first inclined surface of the elastic sheet 5 is squeezed and matched with the second inclined surface of the wedge block 501. During the rotation process, the flexible plate 301 will squeeze the adjacent second inclined surface through its first inclined surface, so that the flexible plate 301 is away from the adjacent rotating plate. The cylinder 3 will bend downward and deform, and the elastic sheet 5 is used to hit the adjacent filter screen 2. The side of the wedge block 501 facing away from the second inclined surface does not contact the adjacent elastic sheet 5. When the flexible plate 301 passes the adjacent wedge block 501 and loses contact with it, the flexible plate 301 will rebound directly along the vertical surface of the adjacent wedge block 501. The vertical cross-section of the filter screen 2 is an arc, which is used to make it easier for the filter screen 2 to throw out the dust in the middle to the surroundings during the rotation process. The elastic sheet 5 contacts and cooperates with the filter screen 2 to clean the adjacent filter screen 2.

[0043] The specific working principle is as follows:

[0044] In the process of the rotating drum 3 driving all the flexible plates 301 thereon to rotate, the flexible plates 301 drive the elastic sheet 5 to rotate. When the elastic sheet 5 rotates to contact a wedge block 501, the elastic sheet 5 squeezes the second inclined surface of the wedge block 501 through the first inclined surface, so that the flexible plate 301 away from the adjacent rotating drum 3 and the elastic sheet 5 away from the adjacent rotating drum 3 will bend downward to produce deformation. Then, when the flexible plate 301 and the elastic sheet 5 pass through the adjacent wedge block 501 and lose contact with it, the flexible plate 301 and the elastic sheet 5 will directly move along the adjacent wedge block. The vertical surface of 501 rebounds, and so on. The elastic sheet 5 continuously squeezes the circumferentially distributed wedge blocks 501, so that the elastic sheet 5 continuously bends and resets during the rotation process. The elastic sheet 5 and the flexible plate 301 knock on the lower side of the filter screen 2, so that the impurities and dust adhering to the filter screen 2 are knocked off. As the filter screen 2 rotates, the stubborn impurities are thrown off the filter screen 2 to reduce the probability of sticky impurities and moist dust adhering to the filter screen 2, thereby preventing the filter screen 2 from being blocked and affecting the antifreeze efficiency of the device for the mine.

[0045] In order to prevent the accumulation of external debris from clogging the filter 2, Figure 6 and Figure 7 As shown, the present invention also includes: a first hydraulic telescopic rod 6, which has a plurality of them and is respectively fixed to the adjacent filter screens 2; a covering cover 7, the number of which is the same as the number of the filter screens 2, which is respectively fixed to the telescopic ends of the first hydraulic telescopic rod 6 on the adjacent filter screens 2, and the covering cover 7 is used to shield the adjacent filter screens 2 to prevent external debris (such as branches or ice and snow) from clogging the filter screens 2. The covering cover 7 is provided with circumferentially distributed notches 701, and the notches 701 are used to allow external airflow to pass through it and enter between the adjacent covering cover 7 and the adjacent filter screen 2.

[0046] In order to make it easier for gas to enter between the cover 7 and the adjacent filter screen 2, Figure 6 and Figure 7 As shown, the present invention also includes: guide plates 8, the number of which is the same as the notch 701, which are respectively fixed to adjacent cover covers 7, and the guide plates 8 are located between two adjacent notches 701. The guide plates 8 are provided with a recess, and the direction of the recess is the same as the rotation direction of the guide plates 8, so that the airflow entering from the notch 701 is pushed and guided to the filter screen 2 by the guide plates 8, and the flow area between the fixing ring 101 and the adjacent cover cover 7 is not less than the flow area of ​​the filter screen 2 to ensure the gas flow entering the filter screen 2.

[0047] The specific working principle is as follows:

[0048] During the rotation of the cover 7, the cover 7 drives all the guide plates 8 thereon to rotate, and the airflow entering from the notch 701 is pushed and guided by the guide plates 8 to the filter 2 to prevent the airflow from flowing directly through the lower side of the cover 7, resulting in the airflow being unable to be guided to the filter 2, affecting the air guiding effect of the fan 102.

[0049] In order to automatically adjust the area between the cover 7 and the adjacent fixing ring 101 for gas flow, as shown in FIG. Figure 6-Figure 8 As shown, the present invention also includes: support frames 9, the number of which is the same as the number of first hydraulic telescopic rods 6, which are respectively fixed to the fixed parts of adjacent first hydraulic telescopic rods 6; second hydraulic telescopic rods 901, the number of which is the same as the number of support frames 9, which are respectively fixed to adjacent support frames 9, the first hydraulic telescopic rod 6 is connected to the adjacent second hydraulic telescopic rod 901 through a conduit, the telescopic end of the second hydraulic telescopic rod 901 is fixed with a weight block 902, and the squeezing force of the weight block 902 on the telescopic end of the adjacent second hydraulic telescopic rod 901 after being subjected to centrifugal force is greater than the liquid resistance in the fixed part of the second hydraulic telescopic rod 901, the weight block 902 is slidably connected to the adjacent support frame 9, and an elastic member is fixed between the weight block 902 and the adjacent support frame 9, wherein the elastic member is a compression spring, and the horizontal distance between the lower part of the cover 7 and the adjacent fixing ring 101 gradually increases from top to bottom. In the process of the cover 7 moving upward, the area between the cover 7 and the adjacent fixing ring 101 for gas flow gradually increases.

[0050] The specific working principle is as follows:

[0051] During the rotation of the fan 102, the operator can adjust the speed of the external motor output shaft through the remote intelligent centralized control system, thereby changing the speed of the fan 102. If the speed of the fan 102 is accelerated (that is, the demand for heat exchange in the mine increases), the fan 102 drives the filter 2 to rotate faster, and the filter 2 drives the support frame 9 to rotate through the first hydraulic telescopic rod 6. The centrifugal force on the weight block 902 on the support frame 9 increases, causing the weight block 902 to move toward the telescopic end of the second hydraulic telescopic rod 901. The weight block 902 squeezes the telescopic end of the second hydraulic telescopic rod 901, causing the second hydraulic telescopic rod 901 to rotate. The telescopic end contracts, and the second hydraulic telescopic rod 901 squeezes the hydraulic oil therein into the first hydraulic telescopic rod 6 through the conduit, so that the telescopic end of the first hydraulic telescopic rod 6 extends, and the telescopic end of the first hydraulic telescopic rod 6 drives the cover 7 to move upward, so that the area available for airflow between the fixed ring 101 and the cover 7 is increased, thereby realizing adaptive adjustment of the gas flow area between the fixed ring 101 and the cover 7 to prevent the area available for airflow between the fixed ring 101 and the cover 7 from being insufficient after the speed of the fan 102 increases, resulting in insufficient air entering the filter 2, which affects the wind guiding effect of the fan 102.

[0052] In summary, the invention includes but is not limited to the above embodiments. Any equivalent replacement or partial improvement made under the spirit and principle of the present invention shall be deemed to be within the scope of protection of the present invention.

Claims

1. A mine wellhead antifreeze device based on ultra-low temperature phase change heat transfer material, characterized in that: include: A housing (1), wherein the housing (1) is fixedly connected to a plurality of fixing rings (101), the housing (1) is rotatably connected to fans (102) having the same number as the fixing rings (101), the fans (102) being located in adjacent fixing rings (101), and the fans (102) being fixedly connected to an output shaft of an external motor via their rotating shafts; The number of the filter screens (2) is the same as the number of the fixing rings (101), and the filter screens (2) are respectively rotatably connected to adjacent fixing rings (101), and the filter screens (2) are fixedly connected to the rotating shafts of the adjacent fans (102); The number of the rotating drums (3) is the same as the number of the fans (102), and they are respectively rotatably connected to the rotating shafts of the adjacent fans (102). The rotating drums (3) are fixed with a plurality of flexible plates (301), and the flexible plates (301) are extruded and fitted with the adjacent filter screens (2); The elastic sheets (5) are the same in number as the flexible plates (301) and are respectively fixed to adjacent flexible plates (301). The elastic sheets (5) are provided with a first inclined surface. The fixing ring (101) is fixed with a plurality of wedge-shaped blocks (501) distributed in a circumferential direction. The wedge-shaped blocks (501) are provided with a second inclined surface. The first inclined surface of the elastic sheet (5) is extruded and matched with the second inclined surface of the wedge-shaped block (501). The elastic sheet (5) is used to impact the adjacent filter screen (2). The side of the wedge-shaped block (501) facing away from the second inclined surface thereof does not contact the adjacent elastic sheet (5); The vertical cross-section of the filter screen (2) is arc-shaped, and the elastic sheet (5) is in contact with and fits the adjacent filter screen (2).

2. The mine wellhead antifreeze equipment based on ultra-low temperature phase change heat transfer material according to claim 1 is characterized in that: The rotation shaft of the fan (102) and the adjacent rotating drum (3) are driven by a gear set (4), and the gear set (4) is used to form a rotation speed difference between the rotation shaft of the adjacent fan (102) and the adjacent rotating drum (3).

3. The mine wellhead antifreeze equipment based on ultra-low temperature phase change heat transfer material according to claim 2 is characterized in that: include: There are a plurality of first hydraulic telescopic rods (6), each of which is fixedly connected to the adjacent filter screens (2); The number of the covering covers (7) is the same as the number of the filter screens (2), and they are respectively fixed to the telescopic ends of the first hydraulic telescopic rods (6) on adjacent filter screens (2). The covering covers (7) are provided with circumferentially distributed notches (701).

4. The mine wellhead antifreeze equipment based on ultra-low temperature phase change heat transfer material according to claim 3 is characterized in that: include: The guide plates (8) are the same in number as the notches (701) and are respectively fixed to adjacent covering covers (7). The guide plates (8) are located between two adjacent notches (701).

5. The mine wellhead antifreeze equipment based on ultra-low temperature phase change heat transfer material according to claim 4 is characterized in that: The flow area between the fixing ring (101) and the adjacent covering cover (7) is not less than the flow area of ​​the filter screen (2).

6. The mine wellhead antifreeze equipment based on ultra-low temperature phase change heat transfer material according to claim 3 is characterized in that: include: Support frames (9), the number of which is the same as the number of the first hydraulic telescopic rods (6), and which are respectively fixed to the fixing portions of adjacent first hydraulic telescopic rods (6); The number of the second hydraulic telescopic rods (901) is the same as the number of the support frames (9), and they are respectively fixed to the adjacent support frames (9). The first hydraulic telescopic rod (6) is connected to the adjacent second hydraulic telescopic rod (901) through a conduit. The telescopic end of the second hydraulic telescopic rod (901) is fixed with a weight block (902). The weight block (902) is slidably connected to the adjacent support frame (9), and an elastic member is fixed between the weight block (902) and the adjacent support frame (9).

7. The mine wellhead antifreeze equipment based on ultra-low temperature phase change heat transfer material according to claim 5 is characterized in that: The horizontal distance between the lower portion of the cover (7) and the adjacent fixing ring (101) gradually increases from top to bottom.

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