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Faults and troubleshooting of small hydraulic fully automatic oil press
2012-08-02 by seoer9

 The hydraulic press is mainly used for cold pressing of the soybeans, soybean meal in the protein is not damaged, can be used to make tofu, soy milk and other soy products, and the remaining residue can be used as feed and fertilizer, its use more widely.
    The hydraulic press is composed of two parts of the hydraulic pressing machine, the Common Faults and exclusion method as follows.
    1, the hydraulic pump pressure is not enough
    The reason is:
    ① oil valve dirt or poor contact; ② press machine out of the oil valve plug and seat on the poor contact or tightened to cause the oil return; ③ small piston pump wear gap is too large. Exclusion: (1) washable after grinding, close together; ② grinding pressed on, and out of the oil valve plug and seat, so close together or tighten the drain plug; ③ replaced with new pumps.
    2, the hydraulic pump is pumping oil to
    The reason is:
    ① oil network is blocked; ② oil use for too long, precipitate attached to the oil inlet valve on the throttle not close together; ③ the fuel tank, the oil is too strong or cold coagulation; ④ tank fuel shortage; ⑤ hydraulic unpaired vacuum pump. Exclusion: (1) cleaning oil network; ② replaced with new oil or release of used oil; filter and clean the oil into the valve, and grinding, to seal well; ③ replace the thin oil, cold weather should raise the room temperature; ④ add enough oil to the tank; ⑤ pull out the small piston, and then pressure injected into the oil.
   3, the pressure gauge pointer can not be maintained, the rapid decline
    The reason is:
    ① safety valve not sealed; ② out of the oil valve plug and ball poor contact; ③ the pipeline joints and hydraulic cylinder plug is not tightened to the cylinder into the hole; ④ three links back to the oil valve and the ball to poor contact. Exclusion is: the ① grinding safety valve to fit; the ② integrated oil press out of the oil valve to fit; ③ tighten the tubing connector and the hydraulic cylinder plug; ④ grinding oil return valve.
   4, the rocker from the top
   The reason is:
    (1) oil valve and the ball is poor contact; the ② spring the head from the ball. Exclusion: (1) grinding the oil valve, a new ball; ② expand the spring head.
    5, Bureau of material
    The reason is:
    ① oil steaming and roasting temperature inappropriate material temperature is too low, pie throwing water content is too high; the ② pie blank uneven thickness; ③ loaded pie, stacked cake is not correct; ④ The squeeze too fast too much. The exclusion method: ① take the appropriate direction of steaming and roasting, to improve the material temperature to 85 ° C or more, the water content less than 7%; ② confectionery attention to the cake thickness uniformity; ③ installed cake cake bad stack is appropriate; ④ reduce squeezed speed.
6, the escape of fluid from the hydraulic cylinder and piston clearance
    The reason is:
    The ① cup sized up the installed wrong; ② cup damage. Remedy: Reinstall the cup and replaced with new cups.
    7 safety valve failure
    The reason is that: ① the oil is not clean, dirt sink attached to the contact surface; ② springs lost elasticity; (3) adjusting screw to loose yet reached the required pressure; ④ often super-pressure job, the ball valve bumps. Exclusion: (1) open the cleaning, such as a valve port, the needle valve damage should be straw grinding machine ; ② replace the spring; ③ re-adjusting screw, the pressure to reach 40MPa; ④ reground the valves replaced with new ball and pay attention to follow the rules and operating .

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