Axial balancing device of coal mine drainage pump

Abstract

The utility model provides an axial balancing device of a coal mine drainage pump, and relates to the technical field of coal mine machinery, the device comprises a pump body mechanism, a balancing mechanism and a driving mechanism, the pump body mechanism comprises a first shell, a first rotating shaft, a first impeller, a first water inlet pipe and a first water outlet pipe, and the first impeller is sleeved on the first rotating shaft and located in the first shell; the first water inlet pipe communicates with the first water outlet pipe through the first impeller; the balance mechanism comprises a second shell, a second rotating shaft, a second impeller, a second water inlet pipe and a second water outlet pipe, the second rotating shaft is sleeved with the second impeller, the second impeller is located in the second shell, and the second water inlet pipe communicates with the second water outlet pipe through the second impeller and communicates with the first water outlet pipe; and the blade direction of the second impeller is opposite to that of the first impeller. Dynamic balance is achieved through vector superposition of force, the overall axial displacement trend of the coal mine drainage pump is eliminated, the vibration situation is reduced, and the operation stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine machinery technical field especially relates to a coal mine drainage pump axial balance device. BACKGROUND

[0002] In coal mining operation, drainage pump is the important equipment of guaranteeing mine safety production. In complex mine environment, drainage pump needs efficient, stable operation to effectively handle the water volume in mine, prevents the accumulation of harmful gas such as gas, coal dust, guarantees the normal progress of miner safety and mine production.

[0003] However, the existing coal mine drainage pump due to the uneven weight distribution or the inertia force in the pump body, the pump body vibration aggravation situation appears in the operation process, especially under the complex geological conditions (such as fault, debris flow etc.), the stability problem of coal mine drainage pump is more prominent.

[0004] Visible, the existing coal mine drainage pump has the problem of poor stability. INVENTION CONTENTS

[0005] The utility model discloses a coal mine drainage pump axial balance device to solve the poor stability problem of coal mine drainage pump in prior art.

[0006] The utility model discloses a coal mine drainage pump axial balance device, which comprises:

[0007] The pump body mechanism comprises a first housing, a first shaft, a first impeller, a first water inlet pipe and a first water outlet pipe. The first shaft is arranged along the length direction of the first housing. The first impeller is sleeved on the first shaft and located inside the first housing. The first water inlet pipe and the first water outlet pipe are arranged on both sides of the first housing respectively. The first water inlet pipe is communicated with the first water outlet pipe through the first impeller.

[0008] The balance mechanism comprises a second housing, a second shaft, a second impeller, a second water inlet pipe and a second water outlet pipe. The second shaft is arranged along the length direction of the second housing. The second impeller is sleeved on the second shaft and located inside the second housing. The second water inlet pipe and the second water outlet pipe are arranged on both sides of the second housing respectively. The second water inlet pipe is communicated with the second water outlet pipe through the second impeller, and the second water inlet pipe is communicated with the first water outlet pipe. The blade direction of the second impeller is opposite to the blade direction of the first impeller.

[0009] The drive mechanism comprises a drive shaft, a first coupling and a second coupling. The drive shaft is connected with the second shaft through the first coupling. The second shaft is connected with the first shaft through the second coupling.

[0010] Optionally, the first coupling is a rigid coupling, and the second coupling is a viscous coupling.

[0011] Optionally, further comprising:

[0012] The support mechanism comprises a connecting plate, an adjusting frame, an adjusting rod and a bottom plate, the pump body mechanism, the balancing mechanism and the driving mechanism are sequentially arranged on the connecting plate along the length direction of the connecting plate, the adjusting frame comprises a first sub-adjusting frame and a second sub-adjusting frame respectively located on two sides of the connecting plate, and the first sub-adjusting frame and the second sub-adjusting frame are connected with the bottom plate through the adjusting rod respectively.

[0013] Optionally, the adjusting rod comprises a tooth disc, a sleeve and a screw rod, the tooth disc is arranged at the top of the sleeve, the sleeve is threadedly connected with the screw rod, one of the sleeve is connected with one of the screw rod, and the bottom end of the screw rod is connected with the bottom plate.

[0014] The first sub-adjusting frame and the second sub-adjusting frame are connected, a connecting shaft is arranged between the tooth disc corresponding to the first sub-adjusting frame and the tooth disc corresponding to the second sub-adjusting frame, gears are arranged at both ends of the connecting shaft, the gears at both ends of the connecting shaft are engaged with the tooth discs at the corresponding ends respectively, and the thread direction of the screw rod corresponding to the first sub-adjusting frame is opposite to the thread direction of the screw rod corresponding to the second sub-adjusting frame.

[0015] Optionally, a rotating wheel is arranged on the first sub-adjusting frame or the second sub-adjusting frame, and the rotating shaft of the rotating wheel is connected with the tooth disc corresponding to the first sub-adjusting frame or the second sub-adjusting frame.

[0016] Optionally, the bottom end of the adjusting rod is provided with a universal ball, the top end of the bottom plate is provided with a base matched with the universal ball, and the universal ball is movably connected in the base.

[0017] Optionally, a first accommodating groove and a second accommodating groove are formed in the base, the first accommodating groove and the second accommodating groove are connected, the universal ball is arranged in the first accommodating groove, a locking block is arranged in the second accommodating groove, the locking block is arc-shaped towards the side of the universal ball, the base is rotatably connected on the bottom plate, and when the base is rotated in a first preset direction, the locking block moves towards the universal ball and abuts against the universal ball.

[0018] Optionally, a fixing groove is formed in the bottom plate, a nut of a bolt is fixedly arranged in the fixing groove, the rod body of the bolt extends from the fixing groove to the second accommodating groove, and the locking block is sleeved on the rod body of the bolt.

[0019] The locking block is threadedly connected to the bolt rod, or the outer peripheral wall of the locking block is threadedly connected to the inner peripheral wall of the second receiving groove.

[0020] Optionally, it also includes a counterweight structure, which is disposed on the pump body mechanism and is located away from the balancing mechanism.

[0021] Optionally, it also includes a housing, wherein the pump body mechanism, the balancing mechanism and the drive mechanism are all disposed inside the housing.

[0022] In this embodiment of the invention, the first inlet pipe can extend to the location of water accumulation in the mine, while the second outlet pipe extends to a suitable location, such as the mine outlet or another location where water accumulation is unlikely. When the drive mechanism is activated, the drive shaft of the drive mechanism drives the second rotating shaft to rotate via the first coupling. The second rotating shaft, in turn, drives the first rotating shaft to rotate via the second coupling, causing the first impeller mounted on the first rotating shaft and the second impeller mounted on the second rotating shaft to begin rotating. When the first impeller rotates, fluid is drawn in from the first inlet pipe and thrown out to the first outlet pipe. Simultaneously, the second impeller, while rotating, draws in fluid through the second inlet pipe connected to the first outlet pipe and discharges it from the second outlet pipe. In this way, by setting the blades of the first impeller of the pump body mechanism and the second impeller of the balancing mechanism in opposite directions, when the first and second impellers rotate simultaneously, opposite axial inertial forces can be generated. For example, the first impeller generates an axial inertial force to the right, while the second impeller generates an axial inertial force to the left. Dynamic balance is achieved through the vector superposition of these forces. This eliminates the overall axial displacement tendency of the coal mine drainage pump, reduces vibration, and improves operational stability.

[0023] In addition, the second inlet pipe of the balancing mechanism is connected to the first outlet pipe of the pump body mechanism, allowing the balancing mechanism to introduce the high-pressure fluid discharged from the pump body mechanism. Under the reverse rotation of the second impeller, the high-pressure fluid generates a compensating force opposite to the axial force of the pump body mechanism, further counteracting the axial thrust and improving operational stability.

[0024] Furthermore, the first rotating shaft is arranged along the length of the first housing, and the second rotating shaft is arranged along the length of the second housing; the first water inlet pipe and the first water outlet pipe are respectively arranged on both sides of the first housing, and the second water inlet pipe and the second water outlet pipe are respectively arranged on both sides of the second housing. In this way, a symmetrical mechanical support system is formed, reducing vibrations caused by uneven structural distribution and improving operational stability. Attached Figure Description

[0025] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0026] Figure 1 is a structural schematic diagram of a coal mine drainage pump axial balancing device provided by the embodiments of the present application;

[0027] Figure 2 is a structural schematic diagram of a coal mine drainage pump axial balancing device provided by the embodiments of the present application;

[0028] Figure 3 is a structural schematic diagram of a coal mine drainage pump axial balancing device provided by the embodiments of the present application;

[0029] Figure 4 is a structural schematic diagram of a coal mine drainage pump axial balancing device provided by the embodiments of the present application;

[0030] Figure 5 is a structural schematic diagram of a coal mine drainage pump axial balancing device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0032] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the structures used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0033] As shown in Figures 1 to 5 The embodiments of the present application provide a coal mine drainage pump axial balancing device, which comprises:

[0034] The pump body mechanism 10 comprises a first housing 101, a first rotating shaft 102, a first impeller 103, a first water inlet pipe 104 and a first water outlet pipe 105. The first rotating shaft 102 is arranged along the length direction of the first housing 101. The first impeller 103 is sleeved on the first rotating shaft 102 and located inside the first housing 101. The first water inlet pipe 104 and the first water outlet pipe 105 are arranged on the two sides of the first housing 101 respectively. The first water inlet pipe 104 is communicated with the first water outlet pipe 105 through the first impeller 103.

[0035] The balancing mechanism 20 comprises a second housing 201, a second rotating shaft 202, a second impeller 203, a second water inlet pipe 204 and a second water outlet pipe 205. The second rotating shaft 202 is arranged along the length direction of the second housing 201. The second impeller 203 is sleeved on the second rotating shaft 202 and located inside the second housing 201. The second water inlet pipe 204 and the second water outlet pipe 205 are arranged on the two sides of the second housing 201 respectively. The second water inlet pipe 204 is communicated with the second water outlet pipe 205 through the second impeller 203. The second water inlet pipe 204 is communicated with the first water outlet pipe 105. The blade direction of the second impeller 203 is opposite to the blade direction of the first impeller 103.

[0036] The driving mechanism 30 comprises a driving shaft. The driving shaft is connected with the second rotating shaft 202 through a first coupling 301. The second rotating shaft 202 is connected with the first rotating shaft 102 through a second coupling 302.

[0037] In this embodiment, the first water inlet pipe 104 can extend to the water accumulation position in the mine, and the second water outlet pipe 205 extends to a suitable position, such as the mine outlet position or other position not prone to water accumulation. When the driving mechanism 30 is started, the driving shaft of the driving mechanism 30 drives the second rotating shaft 202 to rotate through the first coupling 301, and the second rotating shaft 202 drives the first rotating shaft 102 to rotate through the second coupling 302, so that the first impeller 103 sleeved on the first rotating shaft 102 and the second impeller 203 sleeved on the second rotating shaft 202 start to rotate. When the first impeller 103 rotates, fluid is sucked from the first water inlet pipe 104 and is thrown out to the first water outlet pipe 105. At the same time, the second impeller 203 rotates and sucks fluid through the second water inlet pipe 204 communicated with the first water outlet pipe 105 and discharges the fluid from the second water outlet pipe 205. In this way, the blades of the first impeller 103 of the pump body mechanism 10 and the second impeller 203 of the balancing mechanism 20 are arranged in opposite directions, and when the first impeller 103 and the second impeller 203 rotate at the same time, opposite axial inertial forces can be generated, for example, the first impeller 103 generates a rightward axial inertial force, and the second impeller 203 generates a leftward axial inertial force, and the dynamic balance is achieved through the vector superposition of forces. Thus, the axial displacement trend of the coal mine drainage pump as a whole is eliminated, the vibration is reduced, and the operation stability is improved.

[0038] In addition, the second water inlet pipe 204 of the balancing mechanism 20 is communicated with the first water outlet pipe 105 of the pump body mechanism, and the balancing mechanism 20 introduces the high-pressure fluid discharged by the pump body mechanism 10. The high-pressure fluid generates a compensation force opposite to the axial force direction of the pump body mechanism 10 under the action of the reverse rotation of the second impeller 203, further offsets the axial thrust, and improves the operation stability.

[0039] In addition, the first rotating shaft 102 is arranged along the length direction of the first shell 101, and the second rotating shaft 202 is arranged along the length direction of the second shell 201; and the first water inlet pipe 104 and the first water outlet pipe 105 are arranged on the two sides of the first shell 101 respectively, and the second water inlet pipe 204 and the second water outlet pipe 205 are arranged on the two sides of the second shell 201 respectively. In this way, a symmetrical mechanical support system is formed in structure, the vibration caused by uneven structure distribution is reduced, and the operation stability is improved.

[0040] Optionally, the first coupling 301 is a rigid coupling, and the second coupling 302 is a viscous coupling.

[0041] In this embodiment, the first outlet pipe 105 and the second inlet pipe 204 can be communicated through a conduit. Considering that there is a time difference when the fluid enters the pump body mechanism 10 and the balance mechanism 20 respectively in the initial stage of starting the driving mechanism 30, it is difficult to avoid that the fluid passing through the first impeller 103 and the fluid passing through the second impeller 203 will have a pressure difference. Based on this, the second coupling 302 can be set as a viscous coupling, and the second rotating shaft 202 is connected with the first rotating shaft 102 through the viscous coupling. The viscous coupling effectively alleviates the pressure imbalance problem caused by the fluid filling time difference in the starting stage through the dynamic torque buffer and the rotating speed adaptive characteristics, thereby improving the stability of the entire operation process of the coal mine drainage pump axial balance device.

[0042] The first coupling 301 is set as a rigid coupling, and the driving shaft of the driving mechanism 30 is connected with the second rotating shaft 202 through the rigid coupling, so that the torque output by the driving mechanism 30 can be accurately transmitted to the second rotating shaft 202, ensuring the efficiency and accuracy of power transmission.

[0043] Optionally, the coal mine drainage pump axial balance device further comprises:

[0044] The support mechanism 40 comprises a connecting plate 401, an adjusting frame 402, an adjusting rod 403 and a bottom plate 404. The pump body mechanism 10, the balance mechanism 20 and the driving mechanism 30 are sequentially arranged on the connecting plate 401 along the length direction of the connecting plate 401. The adjusting frame 402 comprises a first sub-adjusting frame 4021 and a second sub-adjusting frame 4022 located on the two sides of the connecting plate 401 respectively. The first sub-adjusting frame 4021 and the second sub-adjusting frame 4022 are connected with the bottom plate 404 through the adjusting rod 403 respectively.

[0045] In this embodiment, the pump body mechanism 10, the balance mechanism 20 and the driving mechanism 30 are arranged on the connecting plate 401 of the support mechanism 40, and a unified support is provided through the connecting plate 401. The pump body mechanism 10, the balance mechanism 20 and the driving mechanism 30 are arranged at intervals and located on the same straight line (i.e. the straight line along the length direction of the connecting plate 401), forming a symmetrical mechanical support system in structure, reducing the overturning moment caused by the gravity center deviation, and improving the stability during operation.

[0046] The support mechanism 40 can be made of high-strength steel material to ensure the stability of the device during long-term operation. The connecting plate 401 can also be provided with pads, and the pump body mechanism 10, the balancing mechanism 20 and the driving mechanism 30 are respectively arranged on the connecting plate 401 through a corresponding number of pads. In this way, by increasing or decreasing the number of pads, the first rotating shaft 102 of the pump body mechanism 10, the second rotating shaft 202 of the balancing mechanism 20 and the driving shaft of the driving mechanism 30 can be located on the same straight line, reducing the additional bending moment and torque caused by the eccentricity of the rotating shafts, and improving the structural coordination and stability.

[0047] Among them, in the width direction of the connecting plate 401, the first sub-adjusting frame 4021 and the second sub-adjusting frame 4022 are respectively located on both sides of the connecting plate 401, so that the gravity in the width direction of the connecting plate 401 is evenly distributed, and a mechanically supporting system is formed in the structure. Cross-symmetry (i.e. the width direction and the length direction of the connecting plate 401), reducing the vibration caused by uneven distribution of structure, further improving the operation stability.

[0048] Among them, the first sub-adjusting frame 4021 and the second sub-adjusting frame 4022 are respectively connected with the corresponding bottom plate 404 through the corresponding adjusting rod 403. The bottom plate 404 is placed on the ground of the mine, and the height between the bottom plate 404 and the connecting plate 401 can be adjusted through the extension and retraction of the adjusting rod 403, so as to adapt to the complex terrain environment in the mine, and provide stable support for the pump body mechanism 10, the balancing mechanism 20 and the driving mechanism 30 on the connecting plate 401.

[0049] Optionally, the adjusting rod 403 comprises a tooth disc 4031, a sleeve 4032 and a screw rod 4033, the tooth disc 4031 is arranged at the top of the sleeve 4032, the sleeve 4032 is threadedly connected with the screw rod 4033, the first sub-adjusting frame 4021 and the second sub-adjusting frame 4022 are respectively connected with one sleeve 4032 and one screw rod 4033, and the bottom end of the screw rod 4033 is connected with the bottom plate 404.

[0050] The first sub-adjusting frame 4021 and the second sub-adjusting frame 4022 are connected, a connecting shaft 405 is arranged between the corresponding tooth discs 4031 of the first sub-adjusting frame 4021 and the second sub-adjusting frame 4022, gear wheels 4051 are arranged at both ends of the connecting shaft 405, the gear wheels 4051 at both ends of the connecting shaft 405 are respectively engaged with the corresponding tooth discs 4031, and the thread direction of the screw rod 4033 corresponding to the first sub-adjusting frame 4021 is opposite to the thread direction of the screw rod 4033 corresponding to the second sub-adjusting frame 4022.

[0051] Exemplarily, the gear 4051 at the two ends of the connecting shaft 405 is engaged with the two side toothed discs 4031 respectively to form a transmission chain. When one side toothed disc 4031 (the toothed disc 4031 corresponding to the first sub-adjusting frame 4021) is driven to rotate, the other side toothed disc 4031 (the toothed disc 4031 corresponding to the second sub-adjusting frame 4022) can be synchronously and reversely rotated through the reverse engagement of the gear 4051. For example, the left side toothed disc 4031 rotates clockwise, and the right side toothed disc 4031 can rotate counterclockwise under the driving of the connecting shaft 405. Moreover, the screw rod 4033 corresponding to the first sub-adjusting frame 4021 and the screw rod 4033 corresponding to the second sub-adjusting frame 4022 are opposite in screw direction. Thus, when the toothed disc 4031 drives the sleeve 4032 to rotate, the opposite movement directions of the two side sleeves 4032 along the screw rod 4033 are caused by the difference in screw direction, so that the synchronous adjustment of the height is realized. For example, when the left side sleeve 4032 rotates clockwise, the corresponding screw rod 4033 in the left side sleeve 4032 moves into the left side sleeve 4032, so that the length of the adjusting rod 403 is shortened. When the right side sleeve 4032 rotates counterclockwise, the corresponding screw rod 4033 in the right side sleeve 4032 moves into the right side sleeve 4032, so that the length of the adjusting rod 403 is also shortened, and finally the height is lowered. Compared with the cumbersome operation of two independent screw rods, the human error can be reduced. The single rotation input can be converted into the synchronous and reverse movement of the two side sleeves through the linkage between the gear 4051 and the toothed disc 4031 and the cooperation of the reverse screw threads, so that the stable lifting of the connecting plate 401 is realized. The operation efficiency and system stability are improved.

[0052] It should be understood that the height can also be raised, which is not described here again.

[0053] Optionally, a rotating wheel 406 is arranged on the first sub-adjusting frame 4021 or the second sub-adjusting frame 4022, and the rotating shaft of the rotating wheel 406 is connected with the toothed disc 4031 corresponding to the first sub-adjusting frame 4021 or the second sub-adjusting frame 4022.

[0054] Exemplarily, by rotating any one side rotating wheel 406 (such as the rotating wheel arranged on the first sub-adjusting frame 4021), the rotating shaft directly drives the corresponding toothed disc 4031 to rotate, and then the other side toothed disc 4031 is reversely rotated through the gear 4051 of the connecting shaft 405. Thus, the synchronous adjustment of the two side adjusting rods 403 is realized. The levelness of the connecting plate 401 in the adjustment process is improved, so that the stability of each mechanism arranged on the connecting plate 401 in operation is improved.

[0055] The diameter of the rotating wheel 406 can be greater than the diameter of the reference circle of the toothed disc 4031 (for example, the diameter of the rotating wheel is 3 times the diameter of the toothed disc), so that a labor-saving lever structure is formed.

[0056] The rotating wheel 406 can be provided with anti-skid lines.

[0057] Optionally, the bottom end of the adjusting rod 403 (i.e. the bottom end of the screw rod 4033) is provided with a universal ball 4034, and the top end of the bottom plate 404 is provided with a base 4041 matched with the universal ball 4034, and the universal ball 4034 is movably connected in the base 4041.

[0058] For example, the universal ball 4034 allows the adjusting rod 403 to rotate freely around the ball center in the base 4041, so as to adapt to various complex terrain environments in the mine. Specifically, the universal ball 4034 and the base 4041 adopt spherical surface matching, which ensures that the adjusting rod 403 can stably transmit load at any angle and avoids the gap problem of the traditional hinged structure. The inside of the base 4041 can be provided with a grease channel, and high-temperature lubricating grease is injected through an oil injection nozzle. In this way, the adjusting rod 403 can adjust the height while also adjusting the inclination angle of the bottom plate 404 according to the inclination degree of the ground through the universal ball 4034 at the bottom end of the adjusting rod 403 and the base 4041, so as to adapt to various complex terrain environments in the mine, increase the contact area of the bottom plate 404 with the ground, and thus improve the stability of the supporting mechanism 40 when supporting, thereby ensuring the stability of each mechanism arranged on the connecting plate 401 when operating.

[0059] Optionally, the base 4041 is internally provided with a first accommodating groove and a second accommodating groove, the first accommodating groove is in communication with the second accommodating groove, the universal ball 4034 is arranged in the first accommodating groove, and a locking block 4042 is arranged in the second accommodating groove, the side of the locking block 4042 facing the universal ball 4034 is arc-shaped, and the base 4041 is rotatably connected on the bottom plate 404. When the base is rotated in a first preset direction, the locking block 4042 moves towards the universal ball 4034 and abuts against the universal ball 4034.

[0060] In this embodiment, when the adjusting rod 403 needs to be adjusted in angle, the base 4041 is in a freely rotatable state, and the universal ball 4034 can flexibly move in the first accommodating groove, so that the adjusting rod 403 can adjust the inclination angle according to actual needs to adapt to different installation environments or working conditions.

[0061] When the adjusting rod 403 is adjusted to a suitable angle, the base 4041 is rotated in a first preset direction, for example, clockwise. With the rotation of the base 4041, the locking block 4042 moves towards the universal ball 4034 in the second accommodating groove. Since the side of the locking block 4042 facing the universal ball 4034 is arc-shaped, it can well fit the spherical surface of the universal ball 4034. When the locking block 4042 moves to abut against the universal ball 4034, the universal ball 4034 is locked and its movement in the first accommodating groove is limited.

[0062] In this way, during normal operation of the device, the locking effect of the locking block 4042 on the universal ball 4034 can effectively prevent accidental angle changes of the adjusting rod 403 due to vibration, impact and other factors, thereby ensuring stable operation of the device.

[0063] Optionally, a fixing groove is formed in the bottom plate 404, and a nut of a bolt is fixedly arranged in the fixing groove, and a rod body of the bolt extends from the fixing groove to the second accommodating groove, and the locking block 4042 is sleeved on the rod body of the bolt.

[0064] The locking block 4042 is in threaded connection with the rod body of the bolt, or the outer peripheral wall of the locking block 4042 is in threaded connection with the inner peripheral wall of the second accommodating groove.

[0065] In an example, a fixing groove is formed in the bottom plate 404, and a hexagon socket head cap screw can be arranged in the fixing groove, and a nut of the hexagon socket head cap screw is fixedly arranged in the fixing groove, and a rod body of the bolt extends from the fixing groove to the second accommodating groove to connect the locking block 4042. With rotation of the base 4041, the locking block 4042 is pushed on the rod body in a threaded manner, so that the locking block 4042 moves on the rod body, and at this time, the inner peripheral wall of the second accommodating groove supports and guides the locking block 4042. The operation of tightening and loosening of the locking block 4042 on the universal ball 4034 is realized, so that the adjusting process is more convenient.

[0066] In another example, a fixing groove is formed in the bottom plate 404, and a hexagon socket head cap screw can be arranged in the fixing groove, and a nut of the hexagon socket head cap screw is fixedly arranged in the fixing groove, and a rod body of the bolt extends from the fixing groove to the second accommodating groove to connect the locking block 4042. With rotation of the base 4041, the locking block 4042 is pushed in a threaded manner by the inner wall of the second accommodating groove, so that the locking block 4042 moves on the rod body, and at this time, the rod body supports and guides the locking block 4042. The operation of tightening and loosening of the locking block 4042 on the universal ball 4034 is realized, so that the adjusting process is more convenient.

[0067] Optionally, the coal mine drainage pump axial balancing device further comprises a counterweight structure 50, the counterweight structure 50 is arranged on the pump body mechanism 10, and the counterweight structure 50 is away from the balancing mechanism 20.

[0068] In the embodiment, the first sub-adjusting frame 4021 and the second sub-adjusting frame 4022 are respectively located on both sides of the connecting plate 401 in the width direction of the connecting plate 401, so that the gravity in the width direction of the connecting plate 401 is uniformly distributed; the counterweight structure 50, the pump body mechanism 10, the balancing mechanism 20 and the driving mechanism 30 are respectively arranged in the length direction of the connecting plate 401, so that a mechanical support system which is cross-symmetrical (i.e. the width direction and the length direction of the connecting plate 401) is formed on the whole structure, vibration caused by uneven distribution of the structure is reduced, and the operation stability is further improved.

[0069] The counterweight structure 50 can be adjusted in quality according to actual conditions, and vibration caused by uneven distribution of the structure is further reduced.

[0070] Optionally, the coal mine drainage pump axial balancing device further comprises a shell, and the pump body mechanism 10, the balancing mechanism 20 and the driving mechanism 30 are arranged inside the shell.

[0071] In the embodiment, the shell makes the coal mine drainage pump axial balancing device an integrated system, improves the protection capability of the coal mine drainage pump axial balancing device, and is more suitable for complex mine environments.

[0072] It should be noted that, in this document, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or device that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments is not limited to performing functions in the order discussed, but can also include performing functions in a substantially simultaneous manner or in the opposite order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0073] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative but not restrictive, and the person skilled in the art can make many forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims, which all belong to the protection of the utility model.

Claims

1. A coal mine drainage pump axial balancing device, characterized in that, include: The pump body mechanism includes a first housing, a first rotating shaft, a first impeller, a first inlet pipe, and a first outlet pipe. The first rotating shaft is arranged along the length direction of the first housing. The first impeller is sleeved on the first rotating shaft and located inside the first housing. The first inlet pipe and the first outlet pipe are respectively arranged on both sides of the first housing. The first inlet pipe is connected to the first outlet pipe through the first impeller. A balancing mechanism includes a second housing, a second rotating shaft, a second impeller, a second inlet pipe, and a second outlet pipe. The second rotating shaft is arranged along the length of the second housing. The second impeller is sleeved on the second rotating shaft and located inside the second housing. The second inlet pipe and the second outlet pipe are respectively arranged on both sides of the second housing. The second inlet pipe is connected to the second outlet pipe through the second impeller, and the second inlet pipe is also connected to the first outlet pipe. The blade direction of the second impeller is opposite to that of the first impeller. A drive mechanism, wherein the drive shaft of the drive mechanism is connected to the second rotating shaft via a first coupling, and the second rotating shaft is connected to the first rotating shaft via a second coupling.

2. The coal mine drainage pump axial balancing apparatus of claim 1, wherein, The first coupling is a rigid coupling, and the second coupling is a viscous coupling.

3. The coal mine drainage pump axial balancing apparatus of claim 1, wherein, Also includes: The support mechanism includes a connecting plate, an adjusting frame, an adjusting rod, and a base plate. The pump body mechanism, the balancing mechanism, and the driving mechanism are sequentially arranged on the connecting plate along its length. The adjusting frame includes a first sub-adjusting frame and a second sub-adjusting frame located on both sides of the connecting plate. The first sub-adjusting frame and the second sub-adjusting frame are respectively connected to the base plate via the adjusting rod.

4. The coal mine drainage pump axial balancing apparatus of claim 3, wherein, The adjusting rod includes a toothed disc, a sleeve, and a screw. The toothed disc is disposed on the top of the sleeve, and the sleeve is threadedly connected to the screw. The first sub-adjusting frame and the second sub-adjusting frame are respectively connected to the screw through one of the sleeves, and the bottom end of the screw is connected to the base plate. The first sub-adjustment frame and the second sub-adjustment frame are connected. A connecting shaft is provided between the gear plate corresponding to the first sub-adjustment frame and the gear plate corresponding to the second sub-adjustment frame. Gears are provided at both ends of the connecting shaft. The gears at both ends of the connecting shaft mesh with the gear plates at the corresponding ends. The thread direction of the screw corresponding to the first sub-adjustment frame is opposite to the thread direction of the screw corresponding to the second sub-adjustment frame.

5. The coal mine drainage pump axial balancing apparatus of claim 4, wherein, A rotating wheel is provided on the first sub-adjustment frame or the second sub-adjustment frame, and the rotating shaft of the rotating wheel is connected to the toothed disc corresponding to the first sub-adjustment frame or the second sub-adjustment frame.

6. The coal mine drainage pump axial balancing apparatus of claim 3, wherein, The bottom end of the adjusting rod is provided with a universal ball, and the top end of the base plate is provided with a base adapted to the universal ball, and the universal ball is movably connected in the base.

7. The coal mine drainage pump axial balancing apparatus of claim 6, wherein, The base is internally provided with a first accommodating groove and a second accommodating groove, the first accommodating groove is communicated with the second accommodating groove, the universal ball is arranged in the first accommodating groove, a locking block is arranged in the second accommodating groove, the locking block is arranged in an arc shape towards the universal ball, the base is rotationally connected on the bottom plate, and the locking block moves towards the universal ball when the base is rotated in a first preset direction until the locking block abuts against the universal ball.

8. The coal mine drainage pump axial balancing apparatus of claim 7, wherein, A fixed groove is formed on the bottom plate, a nut of a bolt is fixedly arranged in the fixed groove, a rod body of the bolt extends from the fixed groove to the second accommodating groove, and the locking block is sleeved on the rod body of the bolt. The locking block is threadedly connected with the rod body of the bolt, or the outer circumferential wall of the locking block is threadedly connected with the inner circumferential wall of the second accommodating groove.

9. The coal mine drainage pump axial balancing apparatus of any one of claims 1 to 8, wherein, The balancing mechanism is further provided with a counterweight structure, the counterweight structure is arranged on the pump body mechanism, and the counterweight structure is away from the balancing mechanism.

10. The coal mine drainage pump axial balancing apparatus of any one of claims 1 to 8, wherein, The pump body mechanism, the balancing mechanism and the driving mechanism are arranged in the interior of the shell.

Images