A multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit

Abstract

The present invention discloses a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit, comprising an exhaust air heat extraction box and a heat exchanger therein, the air inlet port of the exhaust air heat extraction box is covered with a dust-proof component, and the front and rear ends of the dust-proof component are both provided with dust-removal components for cleaning the dust-proof component; the air inlet front end of the heat exchanger is provided with a cleaning component for cleaning the heat exchanger; the dust-proof component is provided with a heat-taking component for supplying heat to the cleaning component; the exhaust air heat extraction box is provided with a driving component for driving the dust-proof component to contact the dust-removal component, and the driving component is also used to drive the cleaning component to contact the heat exchanger; the dust-proof component removes dust from the exhaust air contacting the heat exchanger, the dust-removal component can clean and remove dust from the dust-proof component, the heat-taking component extracts heat when the exhaust air passes through the dust-proof component, and transfers the heat to the cleaning component, and then the cleaning component radiates heat to defrost the surface of the heat exchanger, thereby ensuring the heat exchange efficiency of the heat exchanger in long-term operation.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine thermal energy utilization, and in particular to a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit. Background Art

[0002] In the process of coal mine production, wellhead antifreeze is a necessary measure to ensure the safe production of the mine. According to the "Coal Mine Safety Regulations", the air temperature at the mine air inlet wellhead should be kept above 2°C. Therefore, when the outdoor temperature is below 2°C, the air at the mine air inlet wellhead needs to be heated before being sent in. If the wellhead air supply is not heated, ice will form everywhere in the mine, affecting the normal operation of the production equipment in the mine. In severe cases, it may even cause major accidents such as tank jamming and mine shutdown. Therefore, wellhead antifreeze is a necessary measure to ensure the safe production of the mine.

[0003] At present, the waste heat of the mine exhaust air is generally used for heating the wellhead supply air. The heat exchanger is placed in the exhaust air channel, and the heat exchanger is directly used to exchange heat with the exhaust air to produce hot water or hot air, which is then used to heat the air at the mine air inlet wellhead.

[0004] However, since the mine exhaust air carries a large amount of dust, it will accumulate on the surface of the heat exchanger, and the surface of the heat exchanger may be frosted in a low temperature environment. Whether the surface of the heat exchanger is covered with dust or frost, it will affect the heat exchange of the heat exchanger, and the heat exchange effect is difficult to guarantee. For this reason, we propose a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit. The dust prevention component removes dust from the exhaust air in contact with the heat exchanger. The dust removal component can clean and remove dust from the dust prevention component. The heat extraction component extracts heat when the exhaust air passes through the dust prevention component and transfers the heat to the cleaning component. The cleaning component then radiates heat to defrost the surface of the heat exchanger, thereby ensuring the heat exchange efficiency of the heat exchanger in long-term operation.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit, including an exhaust air heat extraction box and a heat exchanger therein;

[0007] The air inlet port of the exhaust air heat extraction box is covered with a dustproof component, and the front and rear ends of the dustproof component are both provided with dust removal components for cleaning the dustproof component;

[0008] A cleaning component for cleaning the heat exchanger is provided at the air inlet front end of the heat exchanger;

[0009] The dustproof component is provided with a heat extraction component for supplying heat to the cleaning component;

[0010] The exhaust air heat extraction box is provided with a driving component for driving the dust prevention component to contact with the dust removal component, and the driving component is also used to drive the cleaning component to contact with the heat exchanger;

[0011] Wherein, the dust-proof component includes a filter screen for separating dust, and the dust-removing component includes a dust-removing brush located at the front end of the air inlet of the filter screen, and a vibration hammer mechanism located at the rear end of the air inlet of the filter screen;

[0012] Wherein, the cleaning assembly includes a heat conducting plate for radiating heat;

[0013] The heat extraction assembly includes a heat absorbing plate, a heat preservation water tank mechanism and a water pump. Micro-water channels are provided inside the heat absorbing plate and the heat conducting plate. The micro-water channels of the heat absorbing plate and the heat conducting plate are connected to the heat preservation water tank mechanism and combined to form a circulating water circuit. The water pump is installed in the heat preservation water tank mechanism and is used to drive the water circulation in the circulating water circuit.

[0014] The drive assembly includes a reciprocating screw, a screw sleeve, a connecting frame, a telescopic shaft, and a limit sleeve. The screw sleeve is used to make a linear reciprocating motion along the reciprocating screw when the reciprocating screw rotates. The screw sleeve is connected and fixed to the dustproof assembly.

[0015] The connecting frame is rotatably connected to the outer wall of one end of the limiting sleeve, the other end of the limiting sleeve is connected to the cleaning component, the other end of the connecting frame is fixed to the dustproof component, one end of the telescopic shaft is coaxially connected and fixed to the tail end of the reciprocating screw rod, the other end of the telescopic shaft is located inside the limiting sleeve and is axially slidably connected to each other, and the telescopic shaft and the limiting sleeve are limitedly engaged in the circumferential direction.

[0016] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, the dustproof component also includes an outer frame covering the outer edge of the filter, and the outer frame is slidably connected to the inner wall of the exhaust air heat extraction box, and the heat absorption plates are provided in multiple pieces and are distributed at intervals on the inner wall of the outer frame.

[0017] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, the dust removal component also includes a fixed frame, which is located at the rear end of the outer frame and is connected and fixed to the inner wall of the exhaust air heat extraction box, and the vibration hammer mechanism includes an elastic support column and a magnetic ball, one end of the elastic support column is connected and fixed to the rear end outer wall of the outer frame, and the magnetic ball is connected and fixed to the other end of the elastic support column, and the front end surface of the fixed frame is embedded with a strong magnet corresponding to the magnetic ball, and the dust prevention component is such that the magnetic ball contacts the strong magnet when the screw sleeve moves along the reciprocating screw to the rear end.

[0018] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, the dust removal brush is connected to the outer wall of the front end of the reciprocating screw, at least two dust removal brushes are designed and are symmetrically distributed along the axis, and the dust prevention component is such that the filter screen contacts the dust removal brush when the screw sleeve moves along the reciprocating screw to the front end.

[0019] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, the cleaning component also includes bristles covering the outer surface of the heat conduction plate, and the dustproof component moves with the connecting frame and the limiting sleeve, and the bristles contact the surface of the heat exchanger when the dustproof component moves along the reciprocating screw to the rear end.

[0020] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, wherein: the heat extraction component also includes a connecting pipe and a water supply pipe, the water supply pipe is connected between the limiting shaft sleeve and the heat conduction plate, the interior of the water supply pipe has two independent channels, and the two channels are respectively connected to the two ends of the micro-water channel of the heat conduction plate, the thermal insulation water tank mechanism includes a water storage tank and a water supply tank, the water supply pipe penetrates the water supply tank and is sealed and rotatably connected to each other, the interior of the water supply tank has two independent sealed spaces, and the two The spaces are respectively communicated with the two channels of the water supply pipe. The water storage tank is installed at the bottom of the water supply tank and is slidably connected to the inner wall of the exhaust air heat extraction box. The water pump is installed inside the water storage tank and communicated with one of the spaces of the water supply tank. The other space of the water supply tank is communicated with the inside of the water storage tank. The connecting pipes have two and are respectively installed on both sides of the inside of the outer frame, and are respectively connected to the two ends of the micro-water channel of the heat absorbing plate. One of the connecting pipes is connected to the water pump, and the other connecting pipe is connected to the inside of the water storage tank.

[0021] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, the driving assembly also includes a support frame, the support frame is fixedly connected to the inner wall of the exhaust air heat extraction box, the front end of the reciprocating screw rod is rotatably connected to the support frame, a motor connected to the reciprocating screw rod is installed on the support frame, and a protective shell covering the motor is also installed on the support frame, and the front end of the protective shell is conical.

[0022] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, the driving component also includes a monitoring sensor, which is located between the rear end of the dustproof component and the front end of the heat exchanger, and the output signal of the monitoring sensor is fed back to the start switch of the motor.

[0023] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, a dust exhaust port is provided at the inner bottom of the exhaust air heat extraction box, and the front and rear end bottoms of the exhaust air heat extraction box are connected to a base, and a dust collecting box is movably installed at the bottom of the exhaust air heat extraction box and between the bases, and the dust collecting box covers the bottom of the dust exhaust port.

[0024] As a preferred solution of the multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit described in the present invention, wherein: the outer surface of the telescopic shaft is axially connected with a limiting rib, the inner wall of the limiting sleeve is provided with a guide groove corresponding to the limiting rib, the limiting rib is located inside the guide groove and is axially slidably connected to each other, and is engaged with each other in the circumferential direction.

[0025] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0026] Through the designed dust-proof component and the dust-removing component matched therewith, the dust-proof component can separate the dust in the exhaust air and remove the dust from the exhaust air in contact with the heat exchanger, thus solving the problem that the dust in the exhaust air is easy to gather on the surface of the heat exchanger, thereby affecting the heat exchange efficiency of the heat exchanger; the dust-removing component can clean and remove the dust from the dust-proof component, thus preventing the dust in the exhaust air from clogging the filter holes of the dust-proof component, which is conducive to the long-term and continuous use of the dust-proof component;

[0027] Through the designed cleaning component and the heat extraction component matched with it, the heat extraction component extracts heat when the exhaust air passes through the dust-proof component and transfers the heat to the cleaning component; the cleaning component then radiates heat to defrost the surface of the heat exchanger, and at the same time, the cleaning component contacts the surface of the heat exchanger to scrape off dust and frost, ensuring the heat exchange efficiency of the heat exchanger in long-term operation;

[0028] Through the designed driving component, intermittent contact between the dustproof component and the dust removal component can be achieved, which not only ensures the cleaning of the dustproof component by the dust removal component, but also reduces the contact time between the dust removal component and the dustproof component, slows down the wear and extends the service life of the dust removal component. The contact coverage time of the dust removal component on the dustproof component is reduced, avoiding interference with the use of the dustproof component; the driving component also achieves intermittent contact between the cleaning component and the surface of the heat exchanger. Similarly, it not only ensures the cleaning of the heat exchanger by the cleaning component, but also reduces the wear of the cleaning component and extends the service life. The contact coverage time of the cleaning component on the heat exchanger is reduced, avoiding affecting the heat exchange efficiency of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view schematic diagram of the exhaust air heat extraction box of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0030] Figure 2 It is a rear view schematic diagram of the exhaust air heat extraction box of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0031] Figure 3 This is a schematic diagram of the interior of the exhaust air heat extraction box of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0032] Figure 4 The diagram is a driving component diagram of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0033] Figure 5 It is a stereoscopic diagram of the connection frame of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0034] Figure 6 It is a three-dimensional diagram of the fixed frame of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0035] Figure 7 It is a three-dimensional diagram of the heat absorption plate of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0036] Figure 8 It is a stereoscopic diagram of the water supply pipe of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0037] Fig. 9 It is a three-dimensional diagram of the heat conduction plate of a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit.

[0038] Among them: 1. exhaust air heat extraction box; 2. heat exchanger; 3. dust outlet; 4. dust collection box; 5. base; 6. filter; 7. outer frame; 8. dust brush; 9. elastic support column; 10. magnetic ball; 11. fixed frame; 12. strong magnet; 13. heat conduction plate; 14. bristles; 15. heat absorption plate; 16. water pump; 17. micro water channel; 18. connecting pipe; 19. water supply pipe; 20. water supply tank; 21. water storage tank; 22. reciprocating screw; 23. screw sleeve; 24. connecting frame; 25. telescopic shaft; 26. limit shaft sleeve; 27. support frame; 28. motor; 29. ​​protective shell; 30. monitoring sensor; 31. limit rib; 32. guide groove. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Example

[0042] Please refer to Figures 1 to 9 As shown, this embodiment provides a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit, including an exhaust air heat extraction box 1 and a heat exchanger 2 inside it; the air inlet port of the exhaust air heat extraction box 1 is covered with a dustproof component, and the front and rear ends of the dustproof component are both provided with dust removal components for cleaning the dustproof component; the air inlet front end of the heat exchanger 2 is provided with a cleaning component for cleaning the heat exchanger 2; the dustproof component is provided with a heat extraction component for supplying heat to the cleaning component; the exhaust air heat extraction box 1 is provided with a driving component for driving the dustproof component to contact with the dust removal component, and the driving component is also used to drive the cleaning component to contact with the heat exchanger 2;

[0043] The dust-proof component can separate the dust in the exhaust air and remove the dust from the exhaust air in contact with the heat exchanger 2, thus solving the problem that the dust in the exhaust air is easy to gather on the surface of the heat exchanger, thereby affecting the heat exchange efficiency of the heat exchanger 2; the dust-removing component can clean and remove the dust from the dust-proof component to prevent the dust in the exhaust air from clogging the filter holes of the dust-proof component, which is conducive to the long-term continuous use of the dust-proof component; the heat-collecting component extracts heat when the exhaust air passes through the dust-proof component and transfers the heat to the cleaning component; the cleaning component radiates heat to defrost the surface of the heat exchanger 2, and at the same time, the cleaning component contacts the surface of the heat exchanger 2 to scrape off dust and frost, ensuring the long-term operation of the heat exchanger 2 The heat exchange efficiency in the heat exchanger 2 is improved; the driving component realizes intermittent contact between the dust-proof component and the dust-removing component, which not only ensures that the dust-removing component cleans the dust-proof component, but also reduces the contact time between the dust-removing component and the dust-proof component, slows down the wear and extends the service life of the dust-removing component, and reduces the contact and coverage time of the dust-proof component on the dust-proof component, avoiding interference with the use of the dust-proof component; the driving component also realizes intermittent contact between the cleaning component and the surface of the heat exchanger 2, which not only ensures that the cleaning component cleans the heat exchanger 2, but also reduces the wear and tear of the cleaning component and extends the service life, and reduces the contact and coverage time of the cleaning component on the heat exchanger 2, avoiding affecting the heat exchange efficiency of the heat exchanger 2;

[0044] The dust-proof component includes a filter screen 6 for separating dust, and the filter screen 6 separates the dust in the exhaust air to prevent the dust in the exhaust air from gathering on the surface of the heat exchanger 2 and affecting the heat exchange efficiency. The dust removal component includes a dust removal brush 8 located at the front end of the air inlet of the filter screen 6, and a vibration hammer mechanism located at the rear end of the air inlet of the filter screen 6. The dust removal brush 8 and the vibration hammer mechanism clean the filter screen 6 to prevent the dust in the exhaust air from clogging the filter holes of the filter screen 6, which is beneficial to the long-term continuous use of the filter screen 6. The cleaning component includes a heat conduction plate 13 for radiating heat, and the heat conduction plate 13 The surface of the heat exchanger 2 is defrosted to ensure the heat exchange efficiency of the heat exchanger 2 in long-term operation; the heat extraction component includes a heat absorbing plate 15, a heat preservation water tank mechanism and a water pump 16. Micro-water channels 17 are provided inside the heat absorbing plate 15 and the heat conducting plate 13. The micro-water channels 17 of the heat absorbing plate 15 and the micro-water channels 17 of the heat conducting plate 13 are connected to the heat preservation water tank mechanism and combined to form a circulating water circuit. The water pump 16 is installed in the heat preservation water tank mechanism and is used to drive the water circulation in the circulating water circuit. The heat absorbing plate 15 extracts heat when the exhaust air passes through the dustproof component. The heat absorbing plate 15 and The water circulation between the heat conducting plates 13 transfers the heat of the heat absorbing plate 15 to the heat conducting plate 13, so that the heat conducting plate 13 radiates heat; the driving assembly includes a reciprocating screw 22, a screw sleeve 23, a connecting frame 24, a telescopic shaft 25, and a limiting sleeve 26. The screw sleeve 23 is used to make a linear reciprocating motion along the reciprocating screw 22 when the reciprocating screw 22 rotates. The screw sleeve 23 is connected and fixed to the dustproof assembly, and the screw sleeve 23 drives the dustproof assembly to achieve intermittent contact with the dust removal assembly; the connecting frame 24 is rotatably connected to the limiting sleeve 26. 6, the other end of the limiting sleeve 26 is connected to the cleaning component, the other end of the connecting frame 24 is fixed to the dustproof component, one end of the telescopic shaft rod 25 is coaxially connected and fixed with the tail end of the reciprocating screw rod 22, the other end of the telescopic shaft rod 25 is located inside the limiting sleeve 26 and is axially slidably connected to each other, and the telescopic shaft rod 25 and the limiting sleeve 26 are limitedly engaged in the circumferential direction. When the dustproof component moves, the connecting frame 24 and the limiting sleeve 26 move with the cleaning component, so as to achieve intermittent contact between the cleaning component and the surface of the heat exchanger 2.

[0045] Specifically, the dustproof component also includes an outer frame 7 covering the outer edge of the filter 6. The outer frame 7 is slidably connected to the inner wall of the exhaust air heat extraction box 1. To cooperate with the linear reciprocating motion of the filter 6, a plurality of heat absorbing plates 15 are arranged and spaced apart on the inner wall of the outer frame 7.

[0046] Specifically, the dust removal brush 8 is connected to the outer side wall of the front end of the reciprocating screw rod 22. At least two dust removal brushes 8 are designed and symmetrically distributed along the axis. When the dust prevention component moves to the front end along the reciprocating screw rod 22 with a screw sleeve 23, the filter screen 6 contacts the dust removal brush 8. The dust removal component also includes a fixed frame 11. The fixed frame 11 is located at the rear end of the outer frame 7 and is connected and fixed to the inner wall of the exhaust air heat extraction box 1. The vibration hammer mechanism includes an elastic support column 9 and a magnetic ball 10. One end of the elastic support column 9 is connected and fixed to the rear end outer wall of the outer frame 7, and the magnetic ball 10 is connected and fixed to the other end of the elastic support column 9. A strong magnet 12 is embedded in the front end surface of the fixed frame 11 corresponding to the magnetic ball 10. When the dust prevention component moves to the rear end along the reciprocating screw rod 22 with a screw sleeve 23, the magnetic ball 10 contacts the strong magnet 12. The reciprocating screw rod 22 is driven to rotate, and the dust prevention component is The rod sliding sleeve 23 drives the dustproof component to make a linear reciprocating motion. When the dustproof component moves to the front end, it contacts the dust removal brush 8. The dust removal brush 8 rotates along with the reciprocating screw rod 22. The dust removal brush 8 scrapes off the dust from the dustproof component during rotation to prevent dust from clogging the filter holes of the dustproof component. When the dustproof component moves to the rear end, the magnetic ball 10 contacts and is magnetically fixed to the strong magnet 12. When the dustproof component moves back and forth toward the front end again, the elastic support column 9 is deformed due to the magnetic fixation of the magnetic ball 10 and the strong magnet 12 until the pulling force of the elastic support column 9 on the magnetic ball 10 is greater than the magnetic attraction between the magnetic ball 10 and the strong magnet 12. When the magnetic ball 10 is disconnected from the strong magnet 12, the elastic support column 9 is reset and hits the dustproof component with the magnetic ball 10 under inertia. The dustproof component shakes off the dust under vibration to prevent dust from clogging the filter holes of the dustproof component.

[0047] Specifically, the cleaning component also includes bristles 14 covering the outer surface of the heat conduction plate 13. When the dustproof component moves, the cleaning component moves together with the connecting frame 24 and the limiting sleeve 26. When the dustproof component moves to the rear end along the reciprocating screw 22, the bristles 14 contact the surface of the heat exchanger 2. The bristles 14 contact the surface of the heat exchanger 2 to scrape off dust and frost, thereby ensuring the heat exchange efficiency of the heat exchanger 2 during long-term operation.

[0048] Specifically, the heat extraction component also includes a connecting pipe 18 and a water supply pipe 19, the water supply pipe 19 is connected between the limiting shaft sleeve 26 and the heat conducting plate 13, the water supply pipe 19 has two independent channels inside, and the two channels are respectively connected to the two ends of the micro-water channel 17 of the heat conducting plate 13, the heat preservation water tank mechanism includes a water storage tank 21 and a water supply tank 20, the water supply pipe 19 penetrates the water supply tank 20 and is sealed and rotatably connected to each other, the water supply tank 20 has two independent sealed spaces inside, and the two spaces are respectively connected to the water supply pipe 21. The two channels of 19 are interconnected, the water storage tank 21 is installed at the bottom of the water supply tank 20 and is slidably connected to the inner wall of the exhaust air heat extraction box 1, the water pump 16 is installed inside the water storage tank 21 and is connected to one of the spaces of the water supply tank 20, and the other space of the water supply tank 20 is interconnected with the inside of the water storage tank 21, and the connecting pipe 18 has two and is respectively installed on both sides of the inner part of the outer frame 7, and is respectively connected to the two ends of the micro-water channel 17 of the heat absorbing plate 15, and one of the connecting pipes 18 is connected to the water pump 16, The other connecting pipe 18 is connected to the inside of the water tank 21. The inside of the water tank 21 is pre-filled with a liquid heat-conducting medium, generally pure water. The water pump 16 extracts the micro-channel 17 of the heat-absorbing plate 15 through the connecting pipe 18. At this time, the micro-channel 17 of the heat-absorbing plate 15 forms a negative pressure. The water inside the water tank 21 is led to the micro-channel 17 by another connecting pipe 18. The water in the micro-channel 17 exchanges heat with the heat-absorbing plate 15, and enters one of the spaces of the water supply tank 20 under the pumping of the water pump 16, and enters under the action of water pressure. Through one of the channels of the water supply pipe 19, water carrying heat enters the micro-channel 17 of the heat conducting plate 13 along the water supply pipe 19, and the water in the micro-channel 17 exchanges heat with the heat conducting plate 13, so that the heat of the heat absorbing plate 15 is transferred to the heat conducting plate 13, and the water in the micro-channel 17 of the heat conducting plate 13 flows to the other channel of the water supply pipe 19 driven by water pressure, and the water after heat exchange enters another space of the water supply tank 20 along the water supply pipe 19, and finally flows back to the inside of the water storage tank 21, thereby completing the water circulation and continuously transferring heat.

[0049] The rotation of the reciprocating screw 22 drives the rotation of the telescopic shaft 25. Since the telescopic shaft 25 and the limiting sleeve 26 are engaged in the circumferential direction, the rotation of the telescopic shaft 25 is transmitted to the limiting sleeve 26. Since the connecting frame 24 is rotatably connected with the limiting sleeve 26, the limiting sleeve 26 is driven to rotate by the telescopic shaft 25. The limiting sleeve 26 drives the heat conducting plate 13 to rotate with the water supply pipe 19. During the rotation process, the heat conducting plate 13 scrapes off the dust and frost on the surface of the heat exchanger 2 with the bristles 14. Since the limiting sleeve 26 is connected to the dustproof component with the connecting frame 24, the dustproof component When the dust assembly moves, the cleaning assembly moves together with the connecting frame 24, the limiting sleeve 26 and the water supply pipe 19. Since the telescopic shaft 25 and the limiting sleeve 26 are axially slidingly connected, the limiting sleeve 26 does not affect the rotational transmission with the telescopic shaft 25 during the movement. The sliding connection between the water supply box 20 and the exhaust air heat extraction box 1 cooperates with the linear reciprocating motion of the dust-proof assembly and the cleaning assembly. The water supply pipe 19 and the water supply box 20 are sealed and rotatably connected, and the water supply pipe 19 is connected to the internal space of the water supply box 20, so the water supply pipe 19 can continue to supply water during the rotation.

[0050] Specifically, the drive assembly also includes a support frame 27, which is fixedly connected to the inner wall of the exhaust air heat extraction box 1, and the front end of the reciprocating screw rod 22 is rotatably connected to the support frame 27. A motor 28 connected to the reciprocating screw rod 22 is installed on the support frame 27, and a protective shell 29 covering the motor 28 is also installed on the support frame 27. The front end of the protective shell 29 is conical. The drive assembly also includes a monitoring sensor 30, which is located between the rear end of the dustproof assembly and the front end of the heat exchanger 2. The output signal of the monitoring sensor 30 is fed back to the start switch of the motor 28, and the motor 28 drives the reciprocating screw rod 22 to rotate. The screw 22 rotates, and the protective shell 29 protects the motor 28. At the same time, the tapered front end of the protective shell 29 reduces the wind resistance. The monitoring sensor 30 is specifically a wind speed sensor and a temperature sensor. If the wind speed at the rear end of the dustproof component is reduced, it indicates that the dustproof component may be blocked. If the air temperature at the front end of the heat exchanger 2 is reduced, it indicates that the surface of the heat exchanger 2 may be frosted. Both output signals to start the motor 28 so that the drive component runs, the dustproof component is contacted with the dust removal component, and the dust removal component cleans the dustproof component, and the cleaning component is contacted with the surface of the heat exchanger 2 to defrost the heat exchanger 2.

[0051] Specifically, a dust exhaust port 3 is provided at the inner bottom of the exhaust air heat extraction box 1, and the front and rear end bottoms of the exhaust air heat extraction box 1 are connected to the base 5. A dust collecting box 4 is movably installed at the bottom of the exhaust air heat extraction box 1 and between the bases 5. The dust collecting box 4 covers the bottom of the dust exhaust port 3, and the dust cleaning of the dust prevention component by the dust removal component falls into the dust collecting box 4 through the dust exhaust port 3.

[0052] Specifically, the outer surface of the telescopic shaft 25 is axially connected to the limiting rib 31, and the inner wall of the limiting sleeve 26 is provided with a guide groove 32 corresponding to the limiting rib 31. The limiting rib 31 is located inside the guide groove 32 and is axially slidably connected to each other and is engaged with each other in the circumferential direction, thereby realizing the axial sliding connection between the telescopic shaft 25 and the limiting sleeve 26, and the circumferential limiting engagement between the telescopic shaft 25 and the limiting sleeve 26.

[0053] The present invention provides a multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit, and its working principle is as follows: step 1, the exhaust air heat extraction box 1 is connected in series in the mine exhaust air pipe, and its internal heat exchanger 2 extracts heat from the coal mine exhaust air, and the heat exchanger 2 transfers the heat to the wellhead for antifreeze;

[0054] Step 2: When the exhaust air of the coal mine passes through the exhaust air heat extraction box 1, it first contacts the dust prevention component. The filter 6 of the dust prevention component separates the dust in the exhaust air to prevent the dust in the exhaust air from gathering on the surface of the heat exchanger 2 and affecting the heat exchange efficiency;

[0055] Step 3: The heat absorbing plate 15 extracts heat when the exhaust air passes through the dustproof component. The water circulation between the heat absorbing plate 15 and the heat conducting plate 13 transfers the heat of the heat absorbing plate 15 to the heat conducting plate 13. The heat conducting plate 13 radiates heat to prevent frost on the surface of the heat exchanger 2.

[0056] Step 4: The monitoring sensor 30 in the driving component monitors the wind speed at the rear end of the dustproof component and the air temperature at the front end of the heat exchanger 2. If the wind speed decreases, it indicates that the dustproof component may be blocked. If the air temperature decreases, it indicates that the surface of the heat exchanger 2 may be frosted. Then, the output signal starts the motor 28 to make the driving component run.

[0057] Step 5: The driving component is started to realize intermittent contact between the dust-proof component and the dust-removing component. The dust-removing component cleans and removes dust from the dust-proof component to prevent the dust in the exhaust air from clogging the filter holes of the dust-proof component, which is conducive to the long-term continuous use of the dust-proof component.

[0058] Step 6: The driving component is started to realize intermittent contact between the cleaning component and the surface of the heat exchanger 2. The cleaning component contacts the surface of the heat exchanger 2 to scrape off dust and frost, ensuring the heat exchange efficiency of the heat exchanger 2 in long-term operation.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit, comprising an exhaust air heat extraction box (1) and a heat exchanger (2) therein, characterized in that: The air inlet port of the exhaust air heat extraction box (1) is covered with a dustproof component, and the front and rear ends of the dustproof component are both provided with dust removal components for cleaning the dustproof component; A cleaning component for cleaning the heat exchanger (2) is provided at the air inlet front end of the heat exchanger (2); The dustproof component is provided with a heat extraction component for supplying heat to the cleaning component; A driving component for driving the dust prevention component to contact the dust removal component is arranged inside the exhaust air heat extraction box (1), and the driving component is also used to drive the cleaning component to contact the heat exchanger (2); The dust prevention component comprises a filter screen (6) for separating dust, and the dust removal component comprises a dust removal brush (8) located at the air inlet front end of the filter screen (6), and a vibration hammer mechanism located at the air inlet rear end of the filter screen (6); Wherein, the cleaning component comprises a heat conducting plate (13) for radiating heat; The heat extraction assembly comprises a heat absorbing plate (15), a heat-insulating water tank mechanism and a water pump (16); micro-water channels (17) are provided inside the heat absorbing plate (15) and the heat conducting plate (13); the micro-water channels (17) of the heat absorbing plate (15) and the micro-water channels (17) of the heat conducting plate (13) are connected to the heat-insulating water tank mechanism and are combined to form a circulating water circuit; the water pump (16) is installed on the heat-insulating water tank mechanism and is used to drive water circulation in the circulating water circuit; The driving assembly comprises a reciprocating screw (22), a screw sleeve (23), a connecting frame (24), a telescopic shaft (25), and a limit sleeve (26); the screw sleeve (23) is used to perform linear reciprocating motion along the reciprocating screw (22) when the reciprocating screw (22) rotates; the screw sleeve (23) is connected and fixed to the dustproof assembly; The connecting frame (24) is rotatably connected to the outer wall of one end of the limiting sleeve (26), the other end of the limiting sleeve (26) is connected to the cleaning component, the other end of the connecting frame (24) is fixed to the dustproof component, one end of the telescopic shaft rod (25) is coaxially connected and fixed to the tail end of the reciprocating screw rod (22), the other end of the telescopic shaft rod (25) is located inside the limiting sleeve (26) and is axially slidably connected to each other, and the telescopic shaft rod (25) and the limiting sleeve (26) are circumferentially limited and engaged.

2. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 1 is characterized by: The dustproof component further comprises an outer frame (7) covering the outer edge of the filter (6), the outer frame (7) being slidably connected to the inner wall of the exhaust air heat extraction box (1), and a plurality of heat absorbing plates (15) are provided and spaced apart on the inner wall of the outer frame (7).

3. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 2 is characterized by: The dust removal component also includes a fixed frame (11), the fixed frame (11) is located at the rear end of the outer frame (7) and is connected and fixed to the inner wall of the exhaust air heat extraction box (1), the vibration hammer mechanism includes an elastic support column (9) and a magnetic ball (10), one end of the elastic support column (9) is connected and fixed to the rear end outer wall of the outer frame (7), and the magnetic ball (10) is connected and fixed to the other end of the elastic support column (9), and a strong magnet (12) is embedded in the front end surface of the fixed frame (11) corresponding to the magnetic ball (10), and the dust prevention component is such that when the lead screw sleeve (23) moves along the reciprocating lead screw (22) to the rear end, the magnetic ball (10) contacts the strong magnet (12).

4. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 1, characterized in that: The dust removal brush (8) is connected to the outer side wall of the front end of the reciprocating screw (22). At least two dust removal brushes (8) are designed and are symmetrically distributed along the axis. When the dust prevention component moves along the reciprocating screw (22) to the front end, the filter screen (6) contacts the dust removal brush (8).

5. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 1, characterized in that: The cleaning component also includes bristles (14) covering the outer surface of the heat conducting plate (13); when the dustproof component moves, the connecting frame (24) and the limiting shaft sleeve (26) move with the cleaning component; when the dustproof component moves to the rear end along the reciprocating screw (22), the bristles (14) contact the surface of the heat exchanger (2).

6. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 1, characterized in that: The heat extraction assembly further comprises a connecting pipe (18) and a water supply pipe (19); the water supply pipe (19) is connected between the limiting shaft sleeve (26) and the heat conducting plate (13); the water supply pipe (19) has two independent channels inside, and the two channels are respectively connected to the two ends of the micro-water channel (17) of the heat conducting plate (13); the heat-insulating water tank mechanism comprises a water storage tank (21) and a water supply tank (20); the water supply pipe (19) penetrates the water supply tank (20) and is sealed and rotatably connected to each other; the water supply tank (20) has two independent sealed spaces inside, and the two spaces are respectively connected to the two channels of the water supply pipe (19). The water storage tank (21) is installed at the bottom of the water supply tank (20) and is slidably connected to the inner wall of the exhaust air heat extraction box (1); the water pump (16) is installed inside the water storage tank (21) and is connected to one of the spaces of the water supply tank (20); the other space of the water supply tank (20) is connected to the inside of the water storage tank (21); the connecting pipe (18) has two ends and is installed on both sides of the inside of the outer frame (7) and is connected to the two ends of the micro-water channel (17) of the heat absorption plate (15); one of the connecting pipes (18) is connected to the water pump (16), and the other connecting pipe (18) is connected to the inside of the water storage tank (21).

7. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 1, characterized in that: The driving assembly further comprises a support frame (27), the support frame (27) being fixedly connected to the inner wall of the exhaust air heat extraction box (1), the front end of the reciprocating screw (22) being rotatably connected to the support frame (27), a motor (28) connected to the reciprocating screw (22) being mounted on the support frame (27), a protective shell (29) covering the motor (28) being further mounted on the support frame (27), the front end of the protective shell (29) being conical.

8. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 7, characterized in that: The drive assembly further comprises a monitoring sensor (30), wherein the monitoring sensor (30) is located between the rear end of the dustproof assembly and the front end of the heat exchanger (2), and an output signal of the monitoring sensor (30) is fed back to a start switch of the motor (28).

9. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 1, characterized in that: A dust outlet (3) is provided at the inner bottom of the exhaust air heat extraction box (1); the front and rear end bottoms of the exhaust air heat extraction box (1) are both connected to bases (5); a dust collecting box (4) is movably installed at the bottom of the exhaust air heat extraction box (1) and between the bases (5); the dust collecting box (4) covers below the dust outlet (3).

10. The multi-energy complementary coal mine exhaust air heat pump wellhead antifreeze unit according to claim 1, characterized in that: The outer surface of the telescopic shaft (25) is axially connected to a limiting rib (31); the inner wall of the limiting sleeve (26) is provided with a guide groove (32) corresponding to the limiting rib (31); the limiting ribs (31) are located inside the guide groove (32) and are axially slidably connected to each other and are engaged with each other in a circumferential direction.

Images