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Double-seal internally-closed thimble vacuum valve

A technology of internally closed and vacuum valves, which is applied in the direction of lifting valves, valve devices, engine components, etc., can solve the problems of not being able to guarantee the vacuum degree in the cavity for a long time, stably and reliably, and achieve the purpose of maintaining the vacuum degree, expanding the application range, The effect of shrinking the volume

Inactive Publication Date: 2011-04-20
胡国强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the traditional needle valve, the hammer needle and the valve body are two kinds of metals. The advancement and retreat of the hammer needle depend on the screw thread, and the hammer needle and the valve body are integrated. When used for a long time, due to the medium in the cavity Affected and temperature changes produce fine air gaps, and air gaps are also generated between the hammer needle and the air passage during the fine movement of the thread, which cannot guarantee the vacuum degree in the cavity for a long time, stably and reliably

Method used

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  • Double-seal internally-closed thimble vacuum valve
  • Double-seal internally-closed thimble vacuum valve
  • Double-seal internally-closed thimble vacuum valve

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] Such as Figure 1 to Figure 10 As shown, the double-sealed inner-closed thimble vacuum valve of the present invention is mainly composed of a screw cap 1, a casing 2 with internal and external threads, a thimble 3 with external threads, and a thimble plug 4, and the thimble plug 4 is placed in the casing 2 The internal bottom end of the thimble plug 4 is provided with an air extraction hole 5; the external thread of the thimble 3 matches the internal thread of the shell 2, and the thimble 3 is placed inside the shell 2 and is located on the top of the thimble plug 4; the screw cap 1 Connected to the top of the shell 2 by threads.

[0021] There is at least one air extraction hole 5, and there may be six, which are evenly distributed on the circumference of the top of the side wall of the thimble plug 4 for vacuuming.

[0022] The above-mentioned thim...

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Abstract

The invention discloses a double-seal internally-closed thimble vacuum valve, belonging to the technical field of vacuum heat pipes. The vacuum valve comprises a nut (1), a shell (2) with an internal screw thread and an external screw thread, a thimble (3) with an external screw thread hexagon, a thimble plug (4) and a red copper gasket (6) padded below the nut (1), wherein the thimble plug (4) is arranged on the bottom end in the shell (2) and is provided with an aspirating hole (5); the thimble (3) is connected with the thimble plug (4) by frapping a pipe socket close to the lower end of the thimble, and thus, the tip of the thimble plug (4) can be in arbitrary orientation and does not deviate due to screw thread space when the thimble (3) is screwed down. The invention has the beneficial effect of small structure and can stably keep vacuum degree for a long term in different vacuum cavity medium environments.

Description

technical field [0001] The invention belongs to the technical field of vacuum heat pipes, and relates to a double-sealed inner-closed thimble vacuum valve. Background technique [0002] Vacuum valves are vacuum components used to isolate vacuum systems, regulate gas flow, and distribute airflow. There are various types of vacuum valves such as ball valves, needle valves or diaphragm vacuum valves. Their working principle is: by pushing and pulling the ball, needle or rubber diaphragm valve core in the valve body to make it reciprocate, block or evacuate the airway, so as to realize the function of the vacuum valve. [0003] For the traditional needle valve, the hammer needle and the valve body are two kinds of metals. The advancement and retreat of the hammer needle depend on the screw thread, and the hammer needle and the valve body are integrated. When used for a long time, due to the medium in the cavity A small air gap is generated during the impact and temperature cha...

Claims

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Application Information

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IPC IPC(8): F16K1/48
Inventor 胡国强
Owner 胡国强
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