Suction truck use instructions
1.1. Tank Click to open the link body is the main body of the feces vehicle, the top of which is provided with air holes, suction holes. The air hole communicates with the air-gas separator and is the passage for the air into and out of the tank body. Into the hole usually sealed when maintenance can be opened, the suction hole on the suction pipe under suction with siphon manure channel into the tank body. 1.3. Power taker Click to open the link. The vacuum pump of the suction truck is driven by the power of the engine through the power takeoff and the transmission shaft rotates. The power takeoff is installed on the right side of the transmission, and the upper part of the operation handle is located in the middle board of the cab.
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There are walk-in boxes at the middle of the two sides of the tank, which are usually used for shelving suction hoses and stand when repaired. The interior of the tank body is equipped with an anti-sloshing plate to reduce the damage caused by the violent sloshing shock of the liquid caused by the driving of the vehicle and the joint of the tank body and the frame thereof. The front head is equipped with an observation tube to monitor the load and prevent overloading. There is a cleaning hole at the bottom, which is normally sealed. When cleaning the tank, the cleaning hole cover can be opened to allow the sewage to drain.
The tank body is rigidly connected and is mounted on the frame. There is a cushion in the middle to reduce the damage of the vibration of the vehicle to the tank body.
Since the suction hose is always immersed on the liquid surface, the air in the tank body is sucked and becomes thinner as it is not supplemented, so that the pressure in the tank is lower than the atmospheric pressure, and the waste liquid is under the action of the compressed air. , Drain the tank by suction pipe.
1.2. Vacuum Pump Click to open the link The XD-70 vacuum pump is mainly used to modify the feces vehicle. The modified suction truck is pumped out of the tank and the air in the pipeline to suck and pump fluid such as manure. This pump is widely used in the sewage department of the sanitation department. The XD-70 rotary vane vacuum pump is an advanced product that has been improved. It is mainly to increase the babbitt boss sleeve, so that the rotary vane always maintains a reasonable clearance with the pump body, avoiding the centrifugal force falling due to high-speed rotation. The fluttering noise and the resulting frictional high temperatures increase the pump's vacuum and service life. Vacuum pumps must not be short of oil.
The power take-off consists of an input gear, an input shaft, an intermediate gear, an intermediate shaft, an output shaft, an output gear, a fork shaft, a fork, and a handle.
The input gear and transmission output gear are constant mesh pairs. Before starting the vacuum pump, the transmission output gear is a constant mesh pair. Before starting the vacuum pump, the transmission is engaged in neutral, then the engine is started, the clutch is disengaged, the power takeoff switch is opened, the fork shaft is moved forward, and the fork drives the output gear on the output shaft, sliding and meshing with the middle gear. The output shaft is transmitted by spline and output gear to the input gear, and the intermediate gear is transmitted to the output gear, which is transmitted to the transmission shaft by the output coupling. This drives the vacuum pump to rotate.
1.4. Four-way valve click to open the link The vacuum pump can only rotate counter-clockwise (facing the front). To take in air from the tank or to discharge air into the tank, it is necessary to use a four-way valve.
The four-way valve communicates with the tank, vacuum pump and return tank. The four-way valve has a partition. Change the suction direction of the vacuum pump. When the four-way valve connects the holding tank with the vacuum pump, the dropping truck will perform the discharge operation.
1.5. Water Gas Separator Click to open the link. The water vapor separator is located at the top of the tank and the rear tank. Its interior has a gas pipe with rectangular holes on both sides of the pipe for air into and out of the tank. During the suction operation, the air in the holding tank comes out of the rectangular hole, the volume suddenly increases, the flow velocity decreases, and the number of heavy water molecules decreases, which can reduce the damage to the lubricating oil and the mechanical parts.
1.6. Air Separator Click to open the link. The compressed air discharged from the vacuum pump has a high speed. When breaking through the oil film layer, it carries a lot of oil droplets. In order to reduce fuel consumption and prevent pollution, an air separator is installed. Separation of oil and gas is located in the right middle of the frame of the feces truck, preceded by a vacuum pump, and then returned to the tank. The oil and gas separation is provided with oil retaining pipes. When the compressed air enters, its volume suddenly expands, the flow velocity decreases, and the flow direction changes, and flows out through the porous oil retaining pipe. As the flow velocity of oil and gas molecules decreases, the impact on the wall of the wall and the hole wall intensifies, and the heavy oil molecules are partially attached. On the wall, the condensed oil drops, the wall of the distributor and the overflow pipe flow back to the tank, and the compressed air after the initial purification flows to the upper tank.
1.7. Return to the tank Click to open the link. The tank is located in the middle of the right side of the frame, left and right by the air separator, and the right four-way valve.
There is an oil retaining net in the return tank, and the inlet and outlet are not connected. The compressed air flowing from the oil separator must pass multiple obstacles before it can be discharged to the four-way valve. Since the volume of the return tank suddenly increases exponentially, the air flow rate is obviously increased. Reduced, combined with barriers such as oil screens, compressed air must pass through multiple obstacles before being discharged to the four-way valve. As the volume of the return tank suddenly increases exponentially, the air flow rate is significantly reduced, combined with obstacles such as blocking the oil, compressed air The oil molecules in the intensified collision, adhered to the inner wall and the net surface, and then flowed into the bottom, and the compressed air that was purified again flowed to the four-way valve.
There is a direct-flow cock under the return tank, which can control the lubricating oil leaf that supplies the vacuum pump. There is no liquid level tube, and the oil storage and oil quality can be observed.
1.8. The boom is clicked to open the link. The boom is located at the top of the container. It is composed of a boom seat, a connecting pipe counterweight, and a support frame. The front suction pipe is connected to the siphon hanger bar and the boom can be operated. Turn 270 or more. Since the counterweight block is set to bear the labor intensity when the suction pipe is used, the connecting pipe bend angles at both ends of the support pipe are 90, and the bent outer diameter is provided with a clearing hole, which is usually sealed when sucking the hose or When the straw is clogged, the clear hole cover can be opened to clear the blockage.
1.9. Locking Mechanism Click to open The link locking mechanism is mainly composed of a fixing device, and its role is to ensure the sealing of the cleaning hole cover. The fixing device is located at the lower right middle of the frame, and is mainly composed of an operating rod, a locking pin, a positioning plate, etc., and is connected with a pull rod, a thread fork-shaped joint, or the like. When the operating rod moves backwards, the rod moves forward, and the rotating shaft swings the counterclockwise arm so that the cleaning hole cover tightly closes the cleaning hole to achieve the purpose of sealing. The operating rod is provided with a locking pin, a spring, a pull rod and a handle. When the joystick is moved back and the lock lock slides along the outer ring of the positioning plate into the positioning groove, the spring at the rear end of the locking lever enters the positioning groove. Since the five sides of the locking pin are restrained, it cannot be ejected. The positioning groove can ensure that the lever does not Because of the bumpy vibrations in the ride, it is said to achieve a tight function.