Adjustable silica gel plug gun type pressure pump and assembling method therefor

Abstract

The invention discloses an adjustable silica gel plug gun type pressure pump and an assembling method therefor, and belongs to the technical field of medical instruments. The adjustable silica gel plug gun type pressure pump comprises a gun type pressure pump cavity, a silica gel plug, a plastic plunger, and a rotary adjusting shaft; the silica gel plug is clamped at the front end of a sealing cavity in the gun type pressure pump cavity; the silica gel plug sleeves the front end of the plastic plunger; the plastic plunger is horizontally arranged in the gun type pressure pump cavity, and the tail end of the plastic plunger penetrates through the tail end of the gun type pressure pump cavity and is fixedly connected with the tail end of the gun type pressure pump cavity; the rotary adjusting shaft is in threaded connection with the plastic plunger, and one end of the rotary adjusting shaft is located in a cavity of the plastic plunger. A plastic part in the silica gel plug is expanded through the adjusting assembly, so that the magnitude of interference of the periphery of the silica gel plug and the sealing cavity in the gun type pressure pump cavity is increased to achieve the sealing effect, the sealing function can be achieved, the thrust caused by the magnitude of interference can be adjusted, and the technical problem that the size of the silica gel plug serving as a sealing member cannot be adjusted is solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an adjustable silicone plug gun-type pressure pump and an assembly method thereof. Background technique [0002] The silicone plug is used as a seal in the pressure pump to play the role of sealing effect. When the silicone plug has a certain amount of interference fit with the sealing cavity inside the pressure pump, if the pressure pump is not used for a long time, the silicone plug will not get stress relief. , the size of the outer diameter of the silicone plug will change to a certain extent and lose its sealing function. [0003] At present, there is no adjustable silicone plug used in similar products in the market. At present, the existing silicone plug can only play a sealing function, and cannot adjust the thrust caused by the change of interference. The sealing effect of the plug will be significantly reduced. Contents of the invention [0004] The embodime...

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Problems solved by technology

[0004] The embodiment of the present invention provides an adjustable silicone plug gun-type pressure pump and its assembly method to solve the technical problems in the prior art that the size of the silicone plug as a seal cannot be adjusted and the lack of a device for assembling this equipment

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