Water wheel driving fan

Abstract

The invention discloses a water wheel driven fan, and relates to the technical field of fans, the water wheel driven fan comprises an air duct and a fan, the fan is rotatably arranged in the air duct, the fan is driven by a driving mechanism to rotate, the lower end of the air duct is used for being arranged above a cooling tower, and the driving mechanism comprises a turbine shell, a water wheel, a rotating shaft, a water inlet pipe and a water outlet pipe; the water wheel is rotationally arranged in the turbine shell, the water inlet pipe and the water outlet pipe are communicated with the lower portion and the upper portion of the turbine shell respectively, the rotating shaft is arranged in the center of the water wheel in a linkage mode, the lower end of the water wheel penetrates through the lower end of the turbine shell and is in linkage with the fan driving shaft, and the rotating shaft and the turbine shell are rotationally arranged in a sealed mode. According to the cooling tower device, the gas explosion accident rate caused by electric sparks generated by the device during cooling of the cooling tower in the mine is effectively reduced, the utilization rate of waste water in the mine is increased in the coal mining process, and the cooling tower device is suitable for scenes such as underground coal mine cooling and anti-explosion cooling.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, in particular to a water wheel driven fan. Background Art

[0002] In underground coal mines, mining machinery, ventilators, water pumps and other equipment generate a lot of heat when they run for a long time. If the heat is not dissipated in time, it will not only cause the circulating water temperature to rise and reduce cooling efficiency, but also make the underground working environment temperature too high, affecting the comfort and safety of personnel and shortening the life of equipment. Therefore, cooling tower systems usually install fans on the top or side walls of the tower. Through forced ventilation, fans accelerate the contact between air and hot water, realize water-air heat exchange, remove heat, and keep the circulating water temperature within the designed range, thereby ensuring the stable operation of back-end equipment and the safety and controllability of the underground working environment.

[0003] A cooling tower fan with good cooling effect, such as "CN218760530U", includes an exhaust port and a fan frame. The bottom end of the exhaust port is welded to the top of the cooling tower. A fan frame is provided in the exhaust port. A mounting frame is fixedly installed in the fan frame. A first motor is fixedly installed on the mounting frame. A connecting shaft is fixedly installed on the output end of the first motor. A plurality of fan blades are fixedly installed on the connecting shaft. Slide grooves are provided in the mounting frame at the front and rear parts of the connecting shaft. Threaded rods are rotatably connected in the two slide grooves. A first bevel gear is sleeved on one side of the two threaded rods close to each other. The top ends of the two first bevel gears are meshed and connected with a second bevel gear. This cooling tower fan can open the dust shield at the top when the cooling tower is working, so that the top of the fan is completely unobstructed, which is convenient for the discharge of steam, thereby further improving the cooling effect. At the same time, it makes the installation and disassembly between the fan frame and the exhaust port more convenient and quick, thereby further improving the efficiency of subsequent fan maintenance.

[0004] However, in the existing technology, cooling towers in coal mines are important devices for cooling underground equipment. During the cooling process, electrical equipment failures such as motor short circuits, contact sparks, mechanical friction or improper maintenance operations may generate electric sparks. If the cooling tower area is defective in the ventilation system, is close to a gas outflow source or fails in monitoring and control, resulting in gas accumulation and a concentration reaching the explosion limit of 5%-16%, and the oxygen content is higher than 12%, if the spark energy exceeds 0.28mJ, it may trigger a gas explosion, creating a high-risk accident risk due to the coupling of hidden dangers in the operation of the cooling device with the gas environment. Summary of the Invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] The purpose of the present invention is to solve the problem in the prior art that a motor-driven fan in an underground coal mine cooling tower is prone to generate electric sparks and cause a high risk of gas explosion.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] On the one hand, the present invention provides a water wheel driven fan, which includes an air duct and a fan, the fan is rotatably arranged inside the air duct, the fan is driven to rotate by a driving mechanism, the lower end of the air duct is used to be arranged above the cooling tower, the driving mechanism includes a turbine casing, a water wheel, a rotating shaft, a water inlet pipe and a water outlet pipe, the turbine casing is arranged at the upper end of the air duct, the water wheel is rotatably arranged inside the turbine casing, the water inlet pipe and the water outlet pipe are respectively connected to the bottom and top of the turbine casing, the rotating shaft is linked to the center of the water wheel, the lower end of the water wheel passes through the lower end of the turbine casing and is linked to the fan drive shaft, and the rotating shaft is sealed and rotatable with the turbine casing.

[0009] Furthermore, the water inlet pipe and the water outlet pipe are used to connect the circulating water outlet and water inlet of the cooling tower respectively. One end of the water inlet pipe is connected to the lower side of the turbine casing. By flushing the circulating water in the cooling tower into the turbine casing to drive the fan, water resources can be effectively saved.

[0010] Furthermore, the water wheel and turbine housing are made of brass or copper-zinc alloy, and the fan is made of corrosion-resistant alloy steel, so as to take into account durability, corrosion resistance and power transmission efficiency.

[0011] Furthermore, the lower end of the turbine casing and the upper end of the air duct are detachably provided, the upper end of the air duct is detachably provided with an isolation cover, a bracket is provided above the isolation cover, the turbine casing is detachably provided above the bracket, and the bracket is detachably provided above the air duct. By making the components detachable, they can be disassembled and inspected when repairing an internal water wheel or fan failure, making the operation more convenient.

[0012] Furthermore, connecting rings are provided at both ends of the air duct, and the bracket is detachably arranged on the connecting rings. A threaded groove is provided on the inner side of the upper end of the air duct, and the edge of the isolation cover is connected to the threaded groove. When installing the isolation cover, it can be threadedly installed with the threaded groove, and can be disassembled by rotating it in the opposite direction.

[0013] Furthermore, a plurality of annular grooves are provided on the surface of the isolation cover, and a filter is provided on the inside of the isolation cover. The annular grooves are used for ventilation. The cooperation between the filter and the isolation cover can isolate most of the external impurities and prevent them from falling into the air duct and causing damage to the fan.

[0014] Furthermore, the bracket is composed of multiple support bars, and a fastening piece is provided at the edge of the upper connecting ring. The end face of the support bar is detachably assembled with the fastening piece. When the bracket is disassembled, the fastening piece and the end face of the support bar are separated to separate the support bar and the fastening piece. At this time, the bracket and the isolation cover are a whole, and the whole is rotated to separate the isolation cover from the annular groove.

[0015] Furthermore, a base is provided at the center position above the bracket, and the base is sealed and connected to the bottom of the turbine housing through a flange. The lower end of the rotating shaft and the base are sealed and penetrated. The detachable setting of the base and the turbine housing facilitates the disassembly of the bottom of the turbine housing and the convenient maintenance of the internal structure of the turbine housing.

[0016] Furthermore, the fastener is provided with an assembly groove on one side facing the support bar, and the support bar includes an inner bar and an outer bar, the end face of the outer bar does not contact the fastener, and the inner bar is slidably arranged inside the outer bar and is arranged at one outer end to adapt to the assembly groove.

[0017] Furthermore, a slot is provided on the end face of the inner strip, a fixed shaft is provided above the buckle, an insertion shaft is slidably provided inside the fixed shaft, an insertion block is provided at the lower end of the insertion shaft that is adapted to the slot, and the upper end of the insertion block is assembled and connected to the upper end of the fixed shaft through a spring. When installing the support strip and the buckle, the insertion shaft needs to be set at the outer end in advance and pulled upward for a distance, and the inner strip is pulled out from the outer strip and extended into the assembly slot, and the insertion shaft is released. Under the action of the spring, the insertion block engages with the slot, so that the inner strip is stably limited in the assembly slot.

[0018] The beneficial effects of the present invention are:

[0019] The present invention can be placed on top of a cooling tower, and water is introduced into the water inlet pipe. The water enters the turbine casing from below, pushing the water wheel to rotate. The rotation of the water wheel can drive the rotating shaft to rotate, and the rotating shaft drives the fan below to rotate, achieving the effect of water power driving the fan to rotate, and the water entering the turbine casing is finally discharged from the water outlet pipe. This method uses the water wheel to directly drive the fan blades, which not only realizes the power output of the fan, but also eliminates the generation of electric sparks, and fundamentally eliminates the inducement of coal mine gas explosions. The device effectively reduces the gas explosion accident rate caused by electric sparks generated by the device when the cooling tower in the mine is cooled, and improves the utilization rate of wastewater in the mine during coal mining. It is suitable for scenarios such as cooling and explosion-proof cooling in coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 An exploded view of a water wheel driven fan provided by the present invention;

[0022] Figure 2 A three-dimensional diagram of a water wheel driven fan provided by the present invention;

[0023] Figure 3 A schematic diagram of the fan structure of a water wheel driven fan provided by the present invention;

[0024] Figure 4 A schematic diagram of the disassembled structure of the fastening parts and support bars of a water wheel driven fan provided by the present invention;

[0025] Figure 5 A schematic diagram of the disassembled structure of the fastening parts and support bars of a water wheel driven fan provided by the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of a fastening component of a water wheel driven fan provided by the present invention.

[0027] Legend:

[0028] 1. Air duct; 2. Fan; 311. Turbine casing; 312. Water wheel; 313. Rotating shaft; 314. Water inlet pipe; 315. Water outlet pipe; 411. Isolation cover; 412. Bracket; 421. Connecting ring; 422. Threaded groove; 431. Annular groove; 432. Filter; 441. Support bar; 4411. Inner bar; 4412. Outer bar; 442. Fastener; 451. Base; 452. Flange; 461. Assembly groove; 462. Slot; 463. Fixed shaft; 464. Insert shaft; 465. Insert block; 466. Spring. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. 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.

[0031] Secondly, as referred to herein, "one embodiment" or "an embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various 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 of other embodiments.

[0032] See also Figures 1-6 The present invention provides a technical solution: a water wheel driven fan, comprising an air duct 1 and a fan 2, the fan 2 being rotatably arranged inside the air duct 1, and the fan 2 being driven to rotate by a driving mechanism, the lower end of the air duct 1 being used to be arranged above the cooling tower, the driving mechanism comprising a turbine casing 311, a water wheel 312, a rotating shaft 313, an inlet pipe 314 and an outlet pipe 315, the turbine casing 311 being arranged at the upper end of the air duct 1, the water wheel 312 being rotatably arranged inside the turbine casing 311, the inlet pipe 314 and the outlet pipe 315 being connected to the bottom and top of the turbine casing 311 respectively, the rotating shaft 313 being linked and arranged at the center position of the water wheel 312, the lower end of the water wheel 312 passing through the lower end of the turbine casing 311 and being linked with the driving shaft of the fan 2, the rotating shaft 313 being sealed and rotatable with the turbine casing 311.

[0033] like Figures 1-6 As shown, the water inlet pipe 314 and the water outlet pipe 315 are used to connect the circulating water outlet and water inlet of the cooling tower respectively. One end of the water inlet pipe 314 is connected to the lower side of the turbine housing 311. By flushing the circulating water in the cooling tower into the turbine housing 311 to drive the fan 2, water resources can be effectively saved.

[0034] like Figures 1-6 As shown, the water wheel 312 and the turbine housing 311 are made of brass or copper-zinc alloy, and the fan 2 is made of corrosion-resistant alloy steel to take into account durability, corrosion resistance and power transmission efficiency.

[0035] like Figures 1-6 As shown, the lower end of the turbine casing 311 and the upper end of the air duct 1 are detachably provided, the upper end of the air duct 1 is detachably provided with an isolation cover 411, and a bracket 412 is provided above the isolation cover 411. The turbine casing 311 is detachably provided above the bracket 412, and the bracket 412 is detachably provided above the air duct 1. By making the components detachable, when the internal water wheel 312 or the fan 2 fails for maintenance, they can be disassembled and inspected, making the operation more convenient.

[0036] like Figures 1-6 As shown, connecting rings 421 are provided at both ends of the air duct 1, and the bracket 412 is detachably arranged on the connecting ring 421. A threaded groove 422 is provided on the inner side of the upper end of the air duct 1, and the edge of the isolation cover 411 is connected to the threaded groove 422. When installing the isolation cover 411, it can be threadedly installed with the threaded groove 422. When disassembling, it can be disassembled by rotating it in the opposite direction.

[0037] like Figures 1-6 As shown, a plurality of annular grooves 431 are provided on the surface of the isolation cover 411, and a filter 432 is provided on the inner side of the isolation cover 411. The annular grooves 431 are used for ventilation. The cooperation of the filter 432 and the isolation cover 411 can isolate most of the external impurities and prevent them from falling into the air duct 1 and causing damage to the fan 2.

[0038] like Figures 1-6 As shown, the bracket 412 is composed of multiple support bars 441, and a fastening piece 442 is provided at the edge of the upper connecting ring 421. The end face of the support bar 441 is detachably assembled with the fastening piece 442. When the bracket 412 is disassembled, the fastening piece 442 and the end face of the support bar 441 are separated to separate the support bar 441 from the fastening piece 442. At this time, the bracket 412 and the isolation cover 411 are a whole. The whole is rotated to separate the isolation cover 411 from the annular groove 431.

[0039] like Figures 1-6 As shown, a base 451 is provided at the center position above the bracket 412. The base 451 is sealedly connected to the bottom of the turbine housing 311 through a flange 452. The lower end of the rotating shaft 313 and the base 451 are sealed and penetrated. The detachable setting of the base 451 and the turbine housing 311 facilitates the disassembly of the bottom of the turbine housing 311 and the convenient maintenance of the internal structure of the turbine housing 311.

[0040] like Figures 1-6 As shown, the fastening member 442 is provided with an assembly groove 461 on the side facing the support bar 441, and the support bar 441 includes an inner bar 4411 and an outer bar 4412. The end face of the outer bar 4412 does not contact the fastening member 442, and the inner bar 4411 is slidably arranged inside the outer bar 4412 and is arranged at the outer end to adapt to the assembly groove 461.

[0041] like Figures 1-6 As shown, a slot 462 is provided on the end face of the inner strip 4411, a fixed shaft 463 is provided above the fastening piece 442, an insertion shaft 464 is provided for sliding inside the fixed shaft 463, and an insertion block 465 is provided at the lower end of the insertion shaft 464 that is adapted to the slot 462. The insertion block 465 is assembled and connected to the upper end of the fixed shaft 463 through a spring 466. When installing the support strip 441 and the fastening piece 442, it is necessary to set the insertion shaft 464 at the outer end in advance and pull it upward for a distance, and pull the inner strip 4411 out of the outer strip 4412 and extend it into the assembly slot 461. Release the insertion shaft 464, and under the action of the spring 466, the insertion block 465 engages with the slot 462, so that the inner strip 4411 is stably limited in the assembly slot 461.

[0042] Working principle: When the fan is in use, it can be placed on the cooling tower, and water flow is introduced into the water inlet pipe 314. The water flow enters the turbine casing 311 from below, pushing the water wheel 312 to rotate. The rotation of the water wheel 312 can drive the rotating shaft 313 to rotate, and the rotating rotating shaft 313 drives the fan 2 below to rotate, achieving the effect of water power driving the fan 2 to rotate, and the water flow entering the turbine casing 311 is finally discharged from the water outlet pipe 315. This method uses the water wheel 312 to directly drive the fan blades, which not only realizes the power output of the fan, but also eliminates the generation of electric sparks, fundamentally eliminating the inducement of coal mine gas explosions. The device effectively reduces the gas explosion accident rate caused by electric sparks generated by the device when the cooling tower in the mine is cooled, and improves the utilization rate of wastewater in the mine during coal mining. It is suitable for scenarios such as cooling and explosion-proof cooling in coal mines.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. 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 water wheel driven fan, comprising an air duct (1) and a fan (2), wherein the fan (2) is rotatably arranged inside the air duct (1), and the fan (2) is driven to rotate by a driving mechanism, characterized in that: The lower end of the air duct (1) is used to be arranged above the cooling tower. The driving mechanism includes a turbine housing (311), a water wheel (312), a rotating shaft (313), a water inlet pipe (314) and a water outlet pipe (315). The turbine housing (311) is arranged at the upper end of the air duct (1). The water wheel (312) is rotatably arranged inside the turbine housing (311). The water inlet pipe (314) and the water outlet pipe (315) are respectively connected to the lower side and the upper side of the turbine housing (311). The rotating shaft (313) is arranged in a linkage manner at the center of the water wheel (312). The lower end of the water wheel (312) passes through the lower end of the turbine housing (311) and is linked to the drive shaft of the fan (2). The rotating shaft (313) is arranged to rotate in a sealed manner with the turbine housing (311).

2. A water wheel driven fan according to claim 1, characterized in that: The water inlet pipe (314) and the water outlet pipe (315) are used to connect the water outlet and water inlet of the cooling tower circulation water, respectively. One end of the water inlet pipe (314) is connected to the lower side of the turbine housing (311).

3. A water wheel driven fan according to claim 2, characterized in that: The water wheel (312) and the turbine housing (311) are made of brass or copper-zinc alloy, and the fan (2) is made of corrosion-resistant alloy steel, so as to take into account durability, corrosion resistance and power transmission efficiency.

4. A water wheel driven fan according to claim 3, characterized in that: The lower end of the turbine housing (311) and the upper end of the air duct (1) are detachably arranged, the upper end of the air duct (1) is detachably provided with an isolation cover (411), a bracket (412) is provided above the isolation cover (411), the turbine housing (311) is detachably arranged above the bracket (412), and the bracket (412) is detachably arranged above the air duct (1).

5. A water wheel driven fan according to claim 4, characterized in that: The air duct (1) is provided with connecting rings (421) at both upper and lower ends. The bracket (412) is detachably mounted on the connecting ring (421). A threaded groove (422) is provided on the inner side of the upper end of the air duct (1). The edge of the isolation cover (411) is connected to the threaded groove (422).

6. A water wheel driven fan according to claim 5, characterized in that: A plurality of annular grooves (431) are provided on the surface of the isolation cover (411), and a filter screen (432) is provided on the inner side of the isolation cover (411).

7. A water wheel driven fan according to claim 6, characterized in that: The bracket (412) is composed of a plurality of support bars (441), and a buckle (442) is provided at the edge of the upper connection ring (421). The end surface of the support bar (441) is detachably assembled with the buckle (442).

8. The water wheel driven fan according to claim 7, characterized in that: A base (451) is provided at the center position above the bracket (412). The base (451) is sealedly connected to the bottom of the turbine housing (311) via a flange (452). The lower end of the rotating shaft (313) is sealed and penetrated with the base (451).

9. The water wheel driven fan according to claim 8, characterized in that: The fastening member (442) is provided with an assembly groove (461) on one side facing the support bar (441). The support bar (441) comprises an inner bar (4411) and an outer bar (4412). The end surface of the outer bar (4412) and the fastening member (442) do not contact each other. The inner bar (4411) is slidably arranged inside the outer bar (4412) and is arranged at one outer end to be adapted to the assembly groove (461).

10. The water wheel driven fan according to claim 9, characterized in that: The end surface of the inner strip (4411) is provided with a slot (462), a fixed shaft (463) is provided above the fastening member (442), an insertion shaft (464) is slidably provided inside the fixed shaft (463), an insertion block (465) adapted to the slot (462) is provided at the lower end of the insertion shaft (464), and the upper end of the insertion block (465) is assembled and connected to the upper end of the fixed shaft (463) via a spring (466).

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