Common faults of electric forklift manufacturers chinasmall electric forklift throttle valve

 

The throttle valve in the forklift of electric forklift manufacturers china realizes the control of fluid flow by changing the throttle length or throttle section. The throttle check valve and the throttle valve in parallel can be combined into a one-way throttle valve. However, when we use the small electric forklift daily, the throttle valve will malfunction, which is a headache. So, let's analyze the failure of the throttle valve for everyone.

1. Common faults of electric forklift manufacturers chinasmall electric forklift throttle valve

1. The flow of the throttle valve is unstable and fluctuates from time to time

2. Little or no flow at the outlet of the small electric forklift throttle valve

3. Increased internal leakage flow

Two, electric forklift manufacturers china failure cause analysis and diagnosis and solutions

The flow of the throttle valve is unstable and fluctuates from time to time

reason:

The oil is mixed with impurities, which are adhered to the edge of the orifice, and the flow cross-section becomes smaller, which causes the flow rate to slow down; when the impurities in the oil are washed, the flow cross-section increases and the speed increases.

The temperature of the small electric forklift system rises, which causes the viscosity of the oil to decrease, thereby increasing the flow rate and speeding up.

The damping device is blocked, there is air mixing inside the system, pressure fluctuations and bounces occur, and the speed is unstable.

The internal and external leakage of the throttle valve is large, the flow loss is large, and the required flow cannot be guaranteed.

Diagnosis and solutions:

First disassemble and wash the throttle valve, clean the stains, and replace the filter. If the oil is seriously dirty, it is recommended to replace the oil.

Electric forklift manufacturers china believes that certain heat dissipation and cooling measures should be taken when necessary.

Check the gap between the valve core and the valve body. If the gap is too large, it is safer to replace the valve core.

Clean the throttle valve with damping device, check that the moisture of the exhaust device is working normally, if it is abnormal, repair and exhaust the air in the oil.

The small electric forklift throttle valve has no flow or very little flow at the oil outlet

reason:

The clearance between the valve core and the valve hole is too large, causing serious leakage.

The orifice is blocked and the valve core is stuck.

Diagnosis and solutions:

(1) Electric forklift manufacturers china recommends to find out if there is a serious leak first, find out the reason, and then prescribe the right medicine.

(2) The small electric forklift is disassembled and inspected, the orifice is cleaned, the oil is replaced, the filtering accuracy is improved, and the oil is kept clean.

(3) Check whether the gap between the valve hole and the valve core is too large. If it is too large, the valve core needs to be replaced.