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CN-224228862-U - Energy adjusting device for screw compressor

CN224228862UCN 224228862 UCN224228862 UCN 224228862UCN-224228862-U

Abstract

The utility model relates to the technical field of compressors and discloses an energy adjusting device for a screw compressor, which comprises a shell, wherein a cavity is formed in the shell, an air inlet and an air outlet which are communicated with the cavity, two meshed screws are arranged in the cavity, a partition plate is arranged on the inner wall of the shell, one side wall of the partition plate is in fit with the screws, the cavity is divided into a high-pressure cavity and a low-pressure cavity by the partition plate, a piston cavity is formed on one side, close to the partition plate, of the shell, a telescopic groove is further communicated with the piston cavity, a piston is slidingly arranged in the piston cavity, the neck of the piston is in fit with the telescopic groove, the high-pressure cavity and the low-pressure cavity are communicated with each other through the piston cavity, when the piston is in fit with the partition plate, the high-pressure cavity and the low-pressure cavity are communicated with each other when the piston is far away from the partition plate, so that pressure relief between the high-pressure cavity and the low-pressure cavity is performed, and the problem that the output capacity and the requirement of the compressor cannot be guaranteed by the existing equipment is solved.

Inventors

  • YU GUANGHUA

Assignees

  • 浙江商业机械厂有限公司

Dates

Publication Date
20260512
Application Date
20250710

Claims (7)

  1. 1. An energy adjusting device for a screw compressor comprises a shell (100), wherein a cavity is formed in the shell (100), an air inlet and an air outlet are communicated with the cavity, two meshed screws (120) are arranged in the cavity, and the energy adjusting device is characterized in that, A partition plate (110) is arranged on the inner wall of the shell (100), one side wall of the partition plate (110) is attached to the screw (120), the cavity is divided into a high-pressure cavity (130) and a low-pressure cavity (140) by the partition plate (110), a piston cavity (210) is formed in one side, close to the partition plate (110), of the shell (100), a telescopic groove (200) is formed in the piston cavity (210) in a communicated mode, a piston (220) is slidably arranged in the piston cavity (210), and the neck of the piston (220) is attached to the inside of the telescopic groove (200) in a sliding mode; The high-pressure cavity (130) is communicated with the low-pressure cavity (140) through the piston cavity (210), when the piston (220) is attached to the partition board (110), the high-pressure cavity (130) is separated from the low-pressure cavity (140), and when the piston (220) is far away from the partition board (110), the high-pressure cavity (130) is communicated with the low-pressure cavity (140), so that pressure relief between the high-pressure cavity (130) and the low-pressure cavity (140) is performed.
  2. 2. The energy adjusting device for the screw compressor according to claim 1, wherein a movable cavity (410), a pressure release cavity (400) and a fixed groove (300) which are sequentially arranged are formed in the shell (100), the movable cavity (410) is communicated with the pressure release cavity (400) through a pressure release seat (420), the movable cavity (410) is communicated with the piston cavity (210) through a connecting vent pipe (390), the pressure release cavity (400) is communicated with the low pressure cavity (140), an air inlet hole (430) is formed in the movable cavity (410) in a communicating manner, the air inlet hole (430) is communicated with the high pressure cavity (130), an adjusting mechanism (310) is arranged in the fixed groove (300), and the adjusting mechanism (310) is used for controlling a valve ball (370) positioned in the movable cavity (410); When the regulating mechanism (310) is electrified, the valve ball (370) is controlled to move to the position of the pressure relief seat (420) through magnetic force, so that the movable cavity (410) and the pressure relief cavity (400) are blocked, at the moment, the air inlet hole (430) is communicated with the movable cavity (410), so that high-pressure air in the high-pressure cavity (130) is filled into the piston cavity (210), the piston (220) is moved to the position attached to the partition plate (110), when the regulating mechanism (310) is not electrified, the valve ball (370) is controlled to move to the position of the air inlet hole (430) through spring force, so that the air inlet hole (430) is blocked from the movable cavity (410), at the moment, the movable cavity (410) is communicated with the pressure relief cavity (400), and residual air in the piston cavity (210) is released into the low-pressure cavity (140), so that the piston (220) is far away from the partition plate (110).
  3. 3. An energy conditioning device for screw compressors according to claim 2, characterized by the fact that the conditioning mechanism (310) comprises: A coil (320) fixedly disposed on the top of the fixing groove (300); A fixed block (330) fixedly provided inside the fixed groove (300); a moving groove (340) which is arranged on the fixed block (330); A moving block (360) which is attached and slides in the moving groove (340), and one end of the moving block (360) penetrates through and slides at the bottom of the fixed block (330); A spring (350) having one end fixedly connected to the top of the moving block (360) and the other end fixedly connected to the inner wall of the fixing groove (300); And a valve ball (370) fixedly connected to one side of the moving block (360) for controlling a closing state of the air inlet hole (430).
  4. 4. The energy adjusting device for the screw compressor according to claim 1, wherein a pressure release hole (230) is formed in a neck portion of the piston (220), a through hole (240) is formed in a side wall of the piston (220), and the through hole (240) is communicated with the pressure release hole (230) and the piston cavity (210).
  5. 5. The energy adjusting device for a screw compressor according to claim 1, wherein a sealing ring (270) is fixedly sleeved on the periphery of the piston (220), and the outer wall of the sealing ring (270) is closely attached to and slides on the inner wall of the piston cavity (210).
  6. 6. The energy adjusting device for the screw compressor according to claim 1, wherein a mounting groove (250) is formed in the bottom surface of the piston (220), an expansion block (260) is fixedly arranged in the mounting groove (250), the expansion block (260) is attached to the partition plate (110), the shape of the expansion block (260) is identical to the shape of the cross section of the partition plate (110) in height, and the expansion block is used for controlling the on-off state between the high-pressure cavity (130) and the low-pressure cavity (140), and the mounting grooves (250) on two sides of the expansion block (260) are communicated with the high-pressure cavity (130) and the low-pressure cavity (140).
  7. 7. The energy adjusting device for the screw compressor according to claim 2, wherein the high-pressure chamber (130) is provided with an air inlet pipe (150) in a communicating manner, and the other end of the air inlet pipe (150) is connected to the air inlet hole (430), so that high-pressure gas in the high-pressure chamber (130) can be transported into the pressure release chamber (400) through the air inlet hole (430).

Description

Energy adjusting device for screw compressor Technical Field The utility model relates to the technical field of compressors, in particular to an energy adjusting device for a screw compressor. Background The double-screw compressor structure is characterized in that a female rotor and a male rotor are arranged in a cylinder in parallel, the double-screw compressor is a driven fluid machine capable of lifting low-pressure gas into high-pressure gas, and the gap between the female rotor and the male rotor is controlled by a synchronous gear, so that the male rotor and the female rotor are ensured not to be contacted in the moving process. The current twin-screw compressor is in order to control the clearance through installing synchronous gear at the suction end of negative and positive rotor to at the both ends of negative and positive rotor both installation seal assembly in order to prevent that the compressor from causing the leakage volume big because of inside and outside pressure difference is big. The Chinese patent with publication number CN218093434U discloses a double-screw compressor, which comprises a cylinder, wherein a female screw rotor and a male screw rotor are arranged in the cylinder, a female rotor synchronous gear is arranged on a rotor shaft of the female screw rotor, a male rotor synchronous gear is arranged on a rotor shaft of the male screw rotor, and the female rotor synchronous gear is meshed with the male rotor synchronous gear; the female screw rotor is characterized in that a female rotor shaft conical shaft section is arranged on a rotor shaft of the female screw rotor, a female rotor synchronous gear is arranged on the female rotor shaft conical shaft section, an oil hole is formed in the female rotor synchronous gear and communicated with the outer side face of the female rotor synchronous gear and the side wall of the inner ring, or a male rotor shaft conical shaft section is arranged on a rotor shaft of the male screw rotor, a male rotor synchronous gear is arranged on the male rotor shaft conical shaft section, an oil hole is formed in the male rotor synchronous gear and communicated with the outer side face of the male rotor synchronous gear and the side wall of the inner ring. And the synchronous gear is provided with the oil filling hole, so that the gap between the male rotor and the female rotor is convenient to adjust. The device can't adjust the compressor capacity in the use, and then can't guarantee the output ability and the demand phase-match of compressor, leads to the compressor to run with high capacity for a long time and has caused the energy extravagant to reduced whole refrigerating system's energy efficiency ratio, can't realize energy saving and emission reduction. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides an energy adjusting device for a screw compressor, which has the advantage of automatically adjusting the energy efficiency ratio, and solves the problems that the prior equipment cannot adjust the capacity of the compressor, further cannot ensure that the output capacity of the compressor is matched with the demand, and the energy waste is caused by long-time operation of the compressor with high capacity. (II) technical scheme In order to achieve the above purpose, the utility model provides the technical scheme that the energy adjusting device for the screw compressor comprises a shell, wherein the interior of the shell is provided with a cavity, an air inlet and an air outlet which are communicated with the cavity, two meshed screws are arranged in the cavity, Be provided with the baffle on the inner wall of casing, a side wall of baffle with the screw rod laminating sets up, the cavity quilt the baffle divide into high pressure chamber and low pressure chamber, be close to on the casing one side of baffle has seted up the piston chamber, the expansion tank has still been seted up to the intercommunication on the piston chamber, the inside slip in piston chamber is provided with the piston, the neck laminating slip of piston with the inside of expansion tank, high pressure chamber with pass through between the low pressure chamber the piston chamber intercommunication sets up, the piston laminating when the baffle, high pressure chamber with separate between the low pressure chamber, the piston is kept away from when the baffle, high pressure chamber with the low pressure chamber is linked together to carry out the pressure release between the high pressure chamber with the low pressure chamber. Preferably, the shell is provided with a movable cavity, a pressure release cavity and a fixed groove which are sequentially arranged, the movable cavity is communicated with the pressure release cavity through a pressure release seat, the movable cavity is communicated with the piston cavity through a connecting vent pipe, the pressure release cavity is communicated