Fluid switching electromagnetic valve and endoscope with same

Abstract

The invention discloses a fluid switching electromagnetic valve. According to the fluid switching electromagnetic valve, an air inlet and an air port are formed in the middle of a valve body; a first air outlet and a second air outlet are formed in the left end and the right end of the valve body respectively; a valve core passes through a main air channel of the valve body; a first sealing ring and a second sealing ring are arranged on the valve core; and the two sealing rings control the air inlet to selectively communicate with the air port or one air outlet. The invention further discloses an endoscope. The endoscope comprises a head end, an insertion part, an operation part, a light guide part and a light source part, wherein the electromagnetic valve is positioned in the light source part. According to the fluid switching electromagnetic valve and the endoscope with the same, the electromagnetic valve is simple and compact in structure, small in size, high in sensitivity and good in reliability; the electromagnetic valve is arranged in the light source part, and therefore the contour dimension of the operation part can be effectively reduced, and the weight of the operation part is reduced so that the operation can be more convenient and labor-saving; and meanwhile, the air supplying operation and the water supplying operation are completely isolated, no connector of a water conveying pipeline is in the operation part, no liquid is in the electromagnetic valve, and therefore the risk of water leakage in the conveying process can be avoided, other electrical elements cannot be affected due to water leakage, and safety and reliability can be realized.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and in particular relates to a fluid switching solenoid valve and an endoscope equipped with the solenoid valve. Background technique [0002] The endoscope system is widely used in medical diagnosis. It is equipped with a device for sending air and liquid into the body cavity, and can send water, liquid medicine, air, etc. into the body cavity as required. In the prior art, the air supply and liquid delivery of the endoscope are controlled by a fluid switching valve arranged on the endoscope operating part, and the fluid switching valve is respectively provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet , Many sealing rings isolate the valve cavity into several cavities. By pressing the button on the top of the switching valve to change the relative position of the isolated cavity and the above four inlets and outlets, the purpose of separating air and liquid ...

AI Technical Summary

Problems solved by technology

[0007] such as As shown in Figure 7, the above three types of air / water supply fluid switching valves P are all placed in the operating part, occupying the position in the inner cavity of the operating part, hindering the reduction of the volume of the operating part, and at the same time, the fluid switching valve also increases The weight of the operating part

In addition, the air / water fluid switching valve is placed in the inner cavity of the operating part. If the liquid inlet or outlet of the switching valve is not firmly connected with the water and gas pipe, the liquid will leak into the operating part, causing damage to the circuit board or other electrical parts in the operating part. influences

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