Conical surface padding
A technology of conical surface and stuffing box, which is applied in the direction of liquid variable displacement machinery, engine seal, variable displacement pump components, etc. It can solve problems such as wear, high specific pressure of piston rod, and inability to offset the effect of gas pressure.
Inactive Publication Date: 2015-04-01
常州市锐金轮机械配件有限公司
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Problems solved by technology
In the case of high pressure, if the flat packing is still used, because the gas pressure is very high, and the packing itself cannot offset the effect of the gas pressure, the specific pressure of the packing acting on the piston rod will be too large and the wear will be aggravated.
Method used
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[0012] Such as figure 1 The shown one kind of conical packing includes stuffing box body 8, support ring 1, compression ring 2, T-shaped outer ring 3, front cone ring 4, rear cone ring 5, axial spring 6 and cylindrical pin 7, the The T-shaped outer ring 3 adopts the structure of a radial cut, the front cone ring 4 and the rear cone ring 5 are symmetrically sleeved in the T-shaped outer ring 3, and the front cone ring 4 and the rear cone ring 5 adopt The structure of the radial opening, when socketing, the cuts are 120° each other, fixed and positioned with the cylindrical pin 7, and installed in the support ring 1 and the compression ring 2, and finally placed in the stuffing box body 8, pre-set by the axial spring 6 tight. The inner and outer ends of the front cone ring 4 and the rear cone ring 5 are processed into an oil wedge angle of 15°.
[0013] The invention has a simple structure and is mainly used for sealing the piston rod of a high-pressure compressor with a press...
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The invention discloses a conical surface padding. The conical surface padding comprises a padding box body, a supporting ring, a pressing ring, a T-shaped outer ring, a front conical ring, a rear conical ring, an axial spring and a cylindrical pin, wherein the T-shaped outer ring is of a radial cut structure, the front conical ring and the rear conical ring are symmetrically sleeved with the T-shaped outer ring in a connected mode, and the front conical ring and the rear conical ring are each of a radial cut structure. When the front conical ring and the rear conical ring are connected in a sleeved mode, the cuts are arranged with a 120-degree included angle, the cylindrical pin is used for fixing and positioning, contained in the supporting ring and the pressing ring and placed in the padding box at last, and an axial spring is used for pre-tightening. The conical surface padding is simple in structure, is mainly used for piston rod sealing of a high-pressure compressor with the pressure difference larger than 10 MPa to 100 MPa, and has both the radial self-tightening effect and the axial self-tightening effect.
Description
technical field [0001] The invention relates to the field of piston rod packing seals, in particular to a cone packing. Background technique [0002] In order to seal the gap where the piston rod passes out of the cylinder, a set of sealing packing is usually used to achieve sealing. Since the structure of the plane packing is relatively simple and the processing procedure is not complicated, the prior art usually adopts the plane packing to realize the sealing of the piston rod. In the case of high pressure, if the flat packing is still used, because the gas pressure is very high, and the packing itself cannot offset the gas pressure, the specific pressure of the packing acting on the piston rod will be too large and the wear will be aggravated. Contents of the invention [0003] In order to overcome the disadvantages of the above technical problems, the present invention provides a cone packing, which can completely solve the above technical problems. [0004] The tech...
Claims
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IPC IPC(8): F16J15/16F16J15/34F04B39/00
CPCF16J15/3464F04B39/00F16J15/16
Inventor 吴红燕孙祥龙
Owner 常州市锐金轮机械配件有限公司