Bellows valve
A technology of bellows valve and valve body, which is applied in the direction of lifting valve, valve details, valve device, etc., to achieve the effect of simple structure, shortening the time of vacuuming and inflation, and reasonable design
Pending Publication Date: 2019-11-08
南京弘峰电气有限公司
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Problems solved by technology
[0002] At present, the various products on the market are assembled from different materials because the sealing structure is assembled, and the air leakage is only a matter of probability. The impact on sealing is almost unavoidable, and none of the existing products on the market can effectively solve this problem
Method used
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Embodiment Construction
[0021] In order to enhance the understanding of the present invention, the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.
[0022] like Figure 1-3 As shown, the present invention is a bellows valve, comprising a valve body 1, a valve stem 2 and a valve core 3, an air rod 4 is arranged at the lower end of the valve body 1, and the two ends of the air rod 4 are respectively welded on the valve body 1 and the valve core 3. On the installation chassis 5, a second sealing groove is provided at the bottom of the installation chassis 5, and the second sealing ring 15 is placed in the second sealing groove. After the installation chassis 5 is fixed, gas can be prevented from leaking between the installation chassis 5 and the assembly. A cylinder is arranged on the upper end of the valve body ...
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The invention discloses a bellows valve. The bellows valve comprises a valve body, a valve rod and a valve core, wherein an air rod is arranged at the lower end of the valve body; two ends of the airrod are respectively welded on the valve body and a mounting base plate, a cylinder is arranged at the upper end of the valve body; an inflation connector is fixed in the cylinder; a valve cover is arranged on the valve body; the valve rod is inserted into an assembly hole of the valve cover to extend into a right cavity in the valve body; the end of the right end of the valve rod is inserted intoa fixing hole in the middle of the valve core; a bellows is arranged between the valve core and the valve cover; a valve cap is arranged outside the end of the right end of the valve rod; the valve cap is fixed on the valve rod through a screw; a left cavity is arranged in the valve body, the left cavity communicates with a gas channel arranged at the inner bottom of the valve body; a nut connecting rod is further arranged outside the valve body; the nut connecting rod is welded on the valve body; and the nut connecting rod is sleeved with a nut. The bellows valve has simple structure, reasonable design and good sealing performance, and can effectively avoid the phenomenon of air leakage in the use process.
Description
technical field [0001] The invention relates to an air valve, in particular to a bellows valve. Background technique [0002] Due to the fact that the sealing structures of various products on the market are assembled from different materials, air leakage is only a matter of probability. Especially in high temperature and cold areas, due to the different expansion coefficients of different materials, combined valves made of various materials The impact on sealing is almost unavoidable, and none of the existing products on the market can effectively solve this problem. Contents of the invention [0003] In order to solve the above problems, the present invention provides a bellows valve with no leak point, large ventilation volume, high strength and low cost. [0004] In order to achieve the above object, the present invention is achieved through the following technical solutions: [0005] The invention relates to a bellows valve, which includes a valve body, a valve stem...
Claims
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IPC IPC(8): F16K1/32F16K41/02
CPCF16K1/32F16K41/02
Inventor 马红杰
Owner 南京弘峰电气有限公司