Inner stator support sealing waterway for electric roller

Abstract

The invention relates to the technical field of electric roller cooling, in particular to an inner stator support sealing waterway for an electric roller, which comprises a main shaft, a sleeve, a flow equalizing cover, a valve body and a switch control assembly. One end of the spindle is provided with a water injection channel; the sleeve sleeves the main shaft, a stator is arranged on the sleeve, and a plurality of serpentine channels are arranged on the sleeve; the flow equalizing cover is connected with the sleeve, an annular channel A and an annular channel B are arranged in the flow equalizing cover, and the serpentine channel is unidirectionally communicated with the water injection channel and the annular channel B; the valve body is connected with the flow equalizing cover and comprises an input port, an output port A and an output port B, the input port is communicated with the annular channel B, and the output port A is communicated with the water injection channel; the switch control assembly is arranged in the valve body and controls connection and disconnection of the output port A and the output port B. Through the arrangement of the through hole A and the through hole B, cooling liquid is uniformly dispersed, and through the arrangement of the valve body and the switch control assembly, circulation of the cooling liquid is conveniently and automatically controlled, and energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cooling an electric drum, in particular to an inner stator bracket sealing water channel for an electric drum. Background Art

[0002] The electric drum is a new type of drive device that places the motor and reducer together inside the drum body. It is mainly used in fixed and mobile belt conveyors, replacing traditional motors, and separate drive devices where the reducer is outside the drive drum. The electric drum is mainly composed of a built-in stator and an external rotor drum. When the external drum rotates at high speed, the temperature of the stator will gradually increase, and the high temperature will accumulate between the drum and the stator, which is easy to damage the stator. At this time, the stator needs to be cooled, and the traditional cooling method is mainly air cooling or simple water cooling. The existing stator bracket sealing water channel structure is mostly connected by direct welding, which is easy to affect the straightness of the main shaft, and the water channel structure is simple and the cooling energy consumption is high.

[0003] In the technical solution disclosed in the Chinese patent with the authorization announcement number CN216490115U, the water inlet pipe is passed through the main shaft and accommodated in the water flow channel; the water inlet pipe is connected to the heat exchange chamber through the inlet pipe, and the water flow channel is connected to the heat exchange chamber through the outlet pipe. The water-cooled permanent magnet drum motor of the utility model can effectively cool and dissipate the heat of the stator in it by water cooling, avoid the stator from working at too high a temperature, and thus increase the service life.

[0004] However, the device still has some shortcomings: the coolant in the device flows in a serpentine shape, and its temperature gradually rises during the flow, resulting in different cooling efficiencies of the front and rear sections on the connecting tube, which in turn easily leads to inconsistent cooling degrees for each stator. In addition, the structure needs to continuously drive the circulation of the coolant, and the energy consumption is still relatively high. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the background technology and to provide an inner stator bracket sealing water channel for an electric drum.

[0006] The technical solution of the present invention is: an inner stator bracket sealed water channel for an electric drum, comprising a main shaft, one end of which is provided with a water injection channel;

[0007] A sleeve, the sleeve is sleeved on the main shaft, a plurality of stators are arranged on the outer wall of the sleeve, and a plurality of serpentine channels are arranged on the sleeve in a ring array around the axis thereof;

[0008] A flow balancing cover is sleeved on the main shaft and connected to the casing. An annular channel A and an annular channel B are arranged in the flow balancing cover. The annular channel A is connected to the water injection channel in one direction. The annular channel A is connected to the input end of the serpentine channel, and the annular channel B is connected to the output end of the serpentine channel.

[0009] The valve body is connected to the flow equalizing cover, and the valve body includes an input port, an output port A and an output port B. The input port is connected to the annular channel B, the output port A is connected to the water injection channel, and an external pipe is arranged on the output port B;

[0010] And a switch control component, which is arranged in the valve body, the switch control component conducts the input port and the output port A when the stator temperature is low, and the switch control component conducts the input port and the output port B when the stator temperature is high.

[0011] Preferably, the serpentine channel includes a through hole A, a through hole B and a guide tube; the through hole A is arranged on the sleeve in a circular array around the axis of the sleeve, the through hole B is arranged on the sleeve in a circular array around the axis of the sleeve and is outside the through hole A, the guide tube is arranged at one end of the sleeve, and each guide tube is connected to the through hole A and the through hole B on the corresponding side respectively.

[0012] Preferably, a plurality of through holes C connected to the annular channel A are arranged on the flow equalizing hood, and each through hole C is respectively connected to the through hole A on the corresponding side; a plurality of through holes D connected to the annular channel B are arranged on the flow equalizing hood, and each through hole D is respectively connected to the through hole B on the corresponding side, and an end cover is arranged on the flow equalizing hood, and a water outlet pipe connected to the annular channel B is arranged on the end cover, and the output end of the water outlet pipe is connected to the input port of the valve body, and a water inlet pipe connected to the annular channel A is arranged on the end cover, a one-way valve is arranged in the water inlet pipe, and the other end of the water inlet pipe is connected to the water injection channel.

[0013] Preferably, a reflux hole and a water outlet hole connected to the water injection channel are provided on the main shaft, and a reflux pipe connected to the output port A is provided on the valve body; the end of the water inlet pipe away from the end cover is connected to the water outlet hole, and the end of the reflux pipe away from the valve body is connected to the reflux hole.

[0014] Preferably, a sealing sleeve is provided on the end cover, the sealing sleeve is provided on the main shaft, and a tube hole A and a tube hole B are provided on the sealing sleeve. The tube hole A is correspondingly connected to the return hole, and the tube hole B is correspondingly connected to the water outlet hole; the water inlet pipe is inserted into the tube hole B, and the return pipe is inserted into the tube hole A.

[0015] Preferably, the switch control assembly includes a valve seat A, a valve seat B, a piston cylinder and a storage cylinder; the valve seat A and the valve seat B are both arranged in the valve body, the valve seat A is located between the valve body input port and the output port A, the valve seat A is provided with a through hole E, the valve seat B is located between the valve body input port and the output port B, and the valve seat B is provided with a through hole F; the piston cylinder is arranged in the valve body and is located on the side of the valve seat B away from the valve seat A, a piston slidably connected to the piston cylinder is arranged in the piston cylinder, the piston is connected to a pull rod, the pull rod passes through the piston cylinder and is slidably connected to the piston, and a spring is sleeved on the pull rod, the two ends of the spring are respectively abutted against the side of the piston close to the valve seat B and the inner wall of the piston cylinder, a valve flap A and a valve flap B are arranged on the pull rod, the valve flap A and the valve flap B are both located between the valve seat A and the valve seat B, and the valve flap A is located between the valve seat A and the valve flap B; the storage cylinder is arranged in the valve body, a connecting pipe connected to the interior of the storage cylinder is arranged, and the other end of the connecting pipe is connected to the interior of the piston cylinder.

[0016] Preferably, two bearings are arranged on the main shaft, a rotor coaxial with the main shaft is sleeved on the outside of the stator, the inner wall of the rotor is connected to the movable end of the bearing, and a pressure stabilizing hole is arranged on the bearing.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] By setting the matching structure of through hole A, through hole B, flow guide pipe, flow equalizer and valve body, annular channel A and annular channel B are set on the flow equalizer, annular channel A is connected to the water injection channel, and annular channel B is connected to the valve body, so as to form a sealed water path to avoid leakage of coolant, and by setting valve seat A and valve seat B in the valve body, and setting the matching structure of piston cylinder, valve disc A, valve disc B and storage barrel, the storage barrel is filled with paraffin or materials with the same properties as paraffin, so that when the temperature of the paraffin coolant is low, the coolant only circulates in a small circle between the main shaft, sleeve and valve body, and automatically dissipates heat through the metal thermal conductivity of the main shaft, and when the coolant is high in temperature, the water pump is controlled to start, so as to promote the circulation of the coolant in the main shaft and the coolant in the external water tank. Therefore, the structure realizes the automatic switching of the circulation direction of the coolant without installing a sensor in the electric drum, so as to achieve the purpose of energy saving and consumption reduction. At the same time, the multiple groups of through holes A and through holes B in the inner and outer ring structures effectively improve the uniformity of the coolant circulation, so that the difference in the temperature reduction amplitude of various parts of the stator is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the connection structure between the main shaft and the stator;

[0021] Figure 3 The structural diagram of the main axis;

[0022] Figure 4 It is a schematic diagram of the connection structure between the stator, the flow balancing cover and the end cover;

[0023] Figure 5 Schematic diagram of the internal structure of the valve body;

[0024] Figure 6 It is a schematic diagram of the connection structure between the valve disc and the valve seat;

[0025] Figure 7 It is a schematic diagram of the connection structure between the piston cylinder, the storage cylinder and the valve disc.

[0026] Reference numerals: 1, spindle; 101, threading hole; 102, water injection channel; 103, reflux hole; 104, water outlet hole; 105, bearing; 1051, pressure stabilizing hole; 2, sleeve; 201, through hole A; 202, through hole B; 3, stator; 4, flow guide tube; 5, flow balancing cover; 51, annular channel A; 511, through hole C; 52, annular channel B; 521, through hole D; 6, end cover; 61, Sealing sleeve; 7. Outlet pipe; 8. Inlet pipe; 9. Check valve; 10. Valve body; 11. Return pipe; 12. External pipe; 13. Valve seat A; 131. Through hole E; 14. Valve seat B; 141. Through hole F; 15. Piston cylinder; 151. Positioning ring; 16. Piston; 17. Pull rod; 18. Spring; 19. Valve disc A; 20. Valve disc B; 21. Storage barrel; 22. Connecting pipe; 23. Rotor. DETAILED DESCRIPTION

[0027] Embodiment 1

[0028] like Figure 1-Figure 7As shown, the present invention proposes an inner stator bracket sealed water channel for an electric drum, comprising a main shaft 1, a sleeve 2, a flow equalizer 5, a valve body 10 and a switch control assembly. A threading hole 101 is provided at one end of the main shaft 1, and a water injection channel 102 is provided at the end of the main shaft 1 away from the threading hole 101. The input end of the water injection channel 102 is connected to an external water pump, and the input end of the external water pump is connected to a water tank. A reflux hole 103 and a water outlet hole 104 connected to the water injection channel 102 are provided on the main shaft 1. The sleeve 2 is sleeved on the main shaft 1, and a plurality of stators 3 are provided on the outer wall of the sleeve 2. A plurality of serpentine channels are provided on the sleeve 2 in a ring array around its axis. The serpentine channel includes a through hole A201, a through hole B202 and a guide tube 4. The through holes A201 are arranged in an annular array around the axis of the sleeve 2 on the sleeve 2, the through holes B202 are arranged in an annular array around the axis of the sleeve 2 on the sleeve 2 and are outside the through holes A201, the flow guide tube 4 is arranged at one end of the sleeve 2, and each flow guide tube 4 is connected to the through holes A201 and B202 on the corresponding side. The flow balancing cover 5 is sleeved on the main shaft 1 and connected to the sleeve 2, and an annular channel A51 and an annular channel B52 are arranged in the flow balancing cover 5. A plurality of through holes C511 connected to the annular channel A51 are arranged on the flow balancing cover 5, and each through hole C511 is connected to the through hole A201 on the corresponding side. The flow equalizer 5 is provided with a plurality of through holes D521 connected with the annular channel B52, each through hole D521 is respectively connected with the through hole B202 on the corresponding side, and the flow equalizer 5 is provided with an end cover 6, the end cover 6 is provided with a water outlet pipe 7 connected with the annular channel B52, the end cover 6 is provided with a water inlet pipe 8 connected with the annular channel A51, a one-way valve 9 is provided in the water inlet pipe 8, and the other end of the water inlet pipe 8 is connected with the water injection channel 102. The valve body 10 is connected with the flow equalizer 5, and the valve body 10 includes an input port, an output port A and an output port B. The output end of the water outlet pipe 7 is connected with the input port of the valve body 10, and an external pipe 12 is provided on the output port B, and the other end of the external pipe 12 is connected with the external water tank. The valve body 10 is provided with a return pipe 11 connected with the output port A. The end of the water inlet pipe 8 away from the end cover 6 is connected with the water outlet hole 104, and the end of the return pipe 11 away from the valve body 10 is connected with the return hole 103. The switch control assembly includes a valve seat A13, a valve seat B14, a piston cylinder 15 and a storage cylinder 21. The valve seat A13 and the valve seat B14 are both arranged in the valve body 10, the valve seat A13 is located between the input port and the output port A of the valve body 10, and a through hole E131 is arranged on the valve seat A13, and the valve seat B14 is located between the input port and the output port B of the valve body 10, and a through hole F141 is arranged on the valve seat B14.The piston cylinder 15 is arranged in the valve body 10 and is located on the side of the valve seat B14 away from the valve seat A13. A piston 16 is arranged in the piston cylinder 15 and is slidably connected to the piston cylinder 15. A positioning ring 151 is arranged in the piston cylinder 15. The piston 16 is connected to the pull rod 17. The pull rod 17 passes through the piston cylinder 15 and is slidably connected to the piston cylinder 15. A spring 18 is sleeved on the pull rod 17. Both ends of the spring 18 are respectively in contact with the side of the piston 16 close to the valve seat B14 and the inner wall of the piston cylinder 15. A valve flap A19 and a valve flap B20 are arranged on the pull rod 17. The valve flap A19 and the valve flap B20 are both located between the valve seat A13 and the valve seat B14, and the valve flap A19 is located between the valve seat A13 and the valve flap B20. The storage barrel 21 is arranged in the valve body 10, and the storage barrel 21 is filled with materials including but not limited to paraffin. A connecting pipe 22 connected to the interior of the storage barrel 21 is provided on the storage barrel 21, and the other end of the connecting pipe 22 is connected to the interior of the piston cylinder 15. The switch control component connects the input port and the output port A when the stator temperature is low, and the switch control component connects the input port and the output port B when the stator temperature is high.

[0029] In this embodiment, before the device is powered on but started, a proper amount of coolant is first injected into the water injection channel 102 through a water pump, and the amount of coolant injected is maintained so that the valve body 10 is not fully filled. When the electric roller is initially running, the stator temperature is low, and the temperature of the outer sleeve 2 rises. At this time, the coolant in the through hole B202 absorbs heat and starts to expand due to the reverse flow blocking effect of the one-way valve 9. The coolant can only enter the valve body 10 along the annular channel B52 and the outlet pipe 7. At this time, the coolant temperature is low and the paraffin in the storage barrel 21 cannot be melted. The piston 16 remains stationary. Subsequently, the coolant enters the through hole A201 along the return pipe 11 and the annular channel A51, thereby forming a closed-loop small cycle. The small cycle actively dissipates physical heat through the main shaft 1. If the electric roller is stopped at this time, or the stator temperature is maintained at a certain Within the range, the water pump will not intervene in the work. If the stator temperature continues to rise at this time, until the high-temperature coolant flows through the valve body 10 and melts the paraffin, the volume of the liquid paraffin increases, and the liquid paraffin enters the piston cylinder 15 along the connecting pipe 22 and pushes the piston 16 to slide. The piston 16 pushes the valve disc A19 and the valve disc B20 to slide through the pull rod 17. At this time, the through hole E131 is gradually closed, and the through hole F141 is gradually opened. The high-temperature coolant enters the water tank along the external pipe 12. At the same time, the water pump intervenes and extracts the low-temperature coolant in the water tank and injects it into the water injection channel 102, so that a closed large circulation is formed between the sleeve 2 and the water tank.

[0030] Embodiment 2

[0031] like Figure 4As shown, the inner stator bracket sealed water channel of an electric drum proposed by the present invention is compared with the first embodiment. The end cover 6 is provided with a sealing sleeve 61, which is sleeved on the main shaft 1. The sealing sleeve 61 is provided with a pipe hole A and a pipe hole B. The pipe hole A is correspondingly connected to the return hole 103, and the pipe hole B is correspondingly connected to the water outlet hole 104. The water inlet pipe 8 is inserted into the pipe hole B, and the return pipe 11 is inserted into the pipe hole A.

[0032] In this embodiment, the structure of the sealing sleeve 61 is used to connect the flow balancing cover 5 and the main shaft 1, and there is no need to weld a water pipe separately, thereby avoiding deformation of the main shaft caused by the welding process.

[0033] Embodiment 3

[0034] like Figure 1 and Figure 2 As shown, the present invention proposes an inner stator bracket sealing water channel for an electric drum. Compared with the first embodiment, two bearings 105 are arranged on the main shaft 1, and the outer sleeve of the stator 3 is provided with a rotor 23 coaxial with the main shaft 1, the inner wall of the rotor 23 is connected to the movable end of the bearing 105, and a pressure stabilizing hole 1051 is arranged on the bearing 105.

[0035] In this embodiment, in the space between the stator 3 and the rotor 23, temperature changes will inevitably lead to changes in air pressure. At this time, the air intake and exhaust through the pressure-stabilizing hole 1051 can effectively control the air pressure balance in the space to avoid deformation of the rotor 23.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An inner stator bracket sealing water channel for an electric drum, characterized in that: include A main shaft (1), one end of which is provided with a water injection channel (102); A sleeve (2), the sleeve (2) is sleeved on the main shaft (1), a plurality of stators (3) are arranged on the outer wall of the sleeve (2), and a plurality of serpentine channels are arranged on the sleeve (2) in a ring array around the axis thereof; A flow balancing cover (5), the flow balancing cover (5) is sleeved on the main shaft (1) and connected to the sleeve (2), an annular channel A (51) and an annular channel B (52) are arranged in the flow balancing cover (5), the annular channel A (51) is unidirectionally connected to the water injection channel (102), the annular channel A (51) is connected to the input end of the serpentine channel, and the annular channel B (52) is connected to the output end of the serpentine channel; A valve body (10), the valve body (10) is connected to the flow equalizer (5), the valve body (10) comprises an input port, an output port A and an output port B, the input port is in communication with the annular channel B (52), the output port A is in communication with the water injection channel (102), and an external pipe (12) is provided on the output port B; And a switch control component, which is arranged in the valve body (10), the switch control component conducts the input port and the output port A when the stator temperature is low, and the switch control component conducts the input port and the output port B when the stator temperature is high.

2. The inner stator bracket sealing water channel for an electric drum according to claim 1, characterized in that: The serpentine channel comprises a through hole A (201), a through hole B (202) and a flow guide tube (4); the through hole A (201) is arranged on the sleeve (2) in a circular array around the axis of the sleeve (2), the through hole B (202) is arranged on the sleeve (2) in a circular array around the axis of the sleeve (2) and is located outside the through hole A (201), the flow guide tube (4) is arranged at one end of the sleeve (2), and each flow guide tube (4) is connected to the through hole A (201) and the through hole B (202) on the corresponding side.

3. The inner stator bracket sealing water channel for an electric drum according to claim 2, characterized in that: The flow equalizer (5) is provided with a plurality of through holes C (511) in communication with the annular channel A (51), and each through hole C (511) is respectively in communication with the through hole A (201) on the corresponding side; the flow equalizer (5) is provided with a plurality of through holes D (521) in communication with the annular channel B (52), and each through hole D (521) is respectively in communication with the through hole B (202) on the corresponding side; an end cover (6) is provided on the flow equalizer (5), and a water outlet pipe (7) in communication with the annular channel B (52) is provided on the end cover (6), and the output end of the water outlet pipe (7) is in communication with the input port of the valve body (10); a water inlet pipe (8) in communication with the annular channel A (51) is provided on the end cover (6), a one-way valve (9) is provided in the water inlet pipe (8), and the other end of the water inlet pipe (8) is in communication with the water injection channel (102).

4. The inner stator bracket sealing water channel for an electric drum according to claim 3, characterized in that: A reflux hole (103) and a water outlet hole (104) which are in communication with the water injection channel (102) are provided on the main shaft (1), and a reflux pipe (11) which is in communication with the output port A is provided on the valve body (10); an end of the water inlet pipe (8) away from the end cover (6) is in communication with the water outlet hole (104), and an end of the reflux pipe (11) away from the valve body (10) is in communication with the reflux hole (103).

5. The inner stator bracket sealing water channel for an electric drum according to claim 4, characterized in that: A sealing sleeve (61) is provided on the end cover (6), and the sealing sleeve (61) is sleeved on the main shaft (1). A pipe hole A and a pipe hole B are provided on the sealing sleeve (61), and the pipe hole A is correspondingly connected to the return hole (103), and the pipe hole B is correspondingly connected to the water outlet hole (104); the water inlet pipe (8) is inserted into the pipe hole B, and the return pipe (11) is inserted into the pipe hole A.

6. The inner stator bracket sealing water channel for an electric drum according to claim 1, characterized in that: The switch control assembly comprises a valve seat A (13), a valve seat B (14), a piston cylinder (15) and a storage cylinder (21); the valve seat A (13) and the valve seat B (14) are both arranged in a valve body (10); the valve seat A (13) is located between an input port and an output port A of the valve body (10); a through hole E (131) is arranged on the valve seat A (13); the valve seat B (14) is located between an input port and an output port B of the valve body (10); a through hole F (141) is arranged on the valve seat B (14); the piston cylinder (15) is arranged in the valve body (10) and is located on a side of the valve seat B (14) away from the valve seat A (13); a piston (16) slidably connected to the piston cylinder (15) is arranged in the piston cylinder (15); the piston (16) is connected to a pull rod (17); the pull rod (17) is connected to the piston cylinder (15); The rod (17) passes through the piston cylinder (15) and is slidably connected thereto, and a spring (18) is sleeved on the pull rod (17), and the two ends of the spring (18) are respectively in contact with the side of the piston (16) close to the valve seat B (14) and the inner wall of the piston cylinder (15), and a valve flap A (19) and a valve flap B (20) are arranged on the pull rod (17), and the valve flap A (19) and the valve flap B (20) are both located between the valve seat A (13) and the valve seat B (14), and the valve flap A (19) is located between the valve seat A (13) and the valve flap B (20); the storage cylinder (21) is arranged in the valve body (10), and a connecting pipe (22) is arranged on the storage cylinder (21) and is connected to the interior thereof, and the other end of the connecting pipe (22) is connected to the interior of the piston cylinder (15).

7. The inner stator bracket sealing water channel for an electric drum according to claim 1, characterized in that: Two bearings (105) are arranged on the main shaft (1), a rotor (23) coaxial with the main shaft (1) is sleeved on the outside of the stator (3), the inner wall of the rotor (23) is connected to the movable end of the bearing (105), and a pressure stabilizing hole (1051) is arranged on the bearing (105).

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