Water inlet/outlet pipe connecting device for plunger pump of sprayer

Abstract

The invention discloses a water inlet / outlet pipe connecting device for a plunger pump of a sprayer. The device comprises a pump body of the plunger pump; two ends of the pump body are provided with a cylinder chamber respectively; a plunger is arranged in each cylinder chamber; the upper end of each cylinder chamber is provided with a drainage chamber, a water outlet joint is arranged at one endof each drainage chamber, and a water outlet high-pressure pipe is connected to the other end of each drainage chamber; the lower end of each cylinder chamber is provided with a water inlet chamber, a water inlet joint is arranged at one end of each water inlet chamber, and the other end of each water inlet chamber is connected with a water inlet connecting pipe; the centers of the drainage chambers and the water inlet chambers are on the same straight line; the water outlet high-pressure pipe made of stainless steel is sleeved between the two drainage chambers; and the water inlet connectingpipe made of stainless steel is sleeved between the two water inlet chambers. The centers of the drainage chambers and the water inlet chambers are on the same straight line, and the water outlet high-pressure pipe and the water inlet connecting pipe made of stainless steel are directly connected in a sleeved way, so that the length is shortened, the weight of the whole device is lightened, and the bearing strength of peasants is reduced; and because the device is made of a stainless steel material, the device has good rigidity and high strength, and is convenient to install and maintain.

Description

technical field [0001] The invention clearly relates to a plunger pump inlet and outlet pipe connection device for a sprayer, which is mainly used for a knapsack sprayer and belongs to agricultural plant protection machinery. Background technique [0002] In the prevention and control of crop diseases and insect pests, the most commonly used machine is the sprayer. The existing manual sprayer is relatively light, but it needs to operate the liquid pump continuously by hand, which is labor-intensive, so some people use the electric sprayer instead, but the motor uses the battery as the power supply. Limited, at present it is driven by a gasoline engine, which is called a sprayer. The sprayer basically overcomes the two problems of high labor intensity of manual operation of the pump and low power of the motor. However, since the sprayer needs to be driven by a gasoline engine, and it is carried on the back of the human body, the biggest new problem is that it is large in siz...

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Problems solved by technology

However, since the sprayer needs to be driven by a gasoline engine, and it is carried on the back of the human body, the biggest new problem is that it is large in size and heavy in weight. The plunger pump of the sprayer is a reciprocating plunger pump, and the reciprocating plunger pump has two water inlet chambers. and two drainage chambers, two water inlet chambers and two water discharge chambers are respectively connected to the water inlet connecting pipe and the water outlet high pressure pipe. In the prior art, the connections between the water inlet chamber and the water discharge chamber and the cylinder chamber are not on a straight line, and the water outlet high pressure The pipe adopts PVC high-pressure pipe, which has poor rigidity. The two ends are connected to the two drainage chambers through threaded joints and nuts. The structure is complex, there are many product accessories, and installation and maintenance are troublesome. Large, and the water inlet connection pipe is longer, so that the entire volume of the reciprocating plunger pump is large and heavy, which is not suitable for the requirements of the knapsack sprayer

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