Vacuum valve with built-in flange

Abstract

The utility model relates to the technical field of valves, in particular to a flange built-in type vacuum valve which comprises a sealing piece shell, a valve sleeve is installed on the sealing piece shell, a valve element is installed in a central installation hole of the valve sleeve in a sliding mode, a valve deck is installed at the upper end of the valve element, and the valve deck is connected into the central installation hole of the valve sleeve in a threaded mode. The upper end of the valve sleeve is a flange plate, and the valve sleeve is installed on the sealing piece shell through the flange plate. The lower end of the air exhaust hole is communicated with the outer wall of the valve element through a first air inlet hole formed in the radial direction. The vacuum valve is suitable for equipment with the sea depth within 2000 m, and is installed on the sealing piece shell through the flange plate, when the vacuum valve is replaced and maintained, the vacuum valve only needs to be detached from the flange plate, the sealing piece shell does not need to be detached, the working procedure is simplified, the labor intensity is reduced, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially, relates to a flange built-in vacuum valve. BACKGROUND

[0002] The underwater sealed shell needs to be vacuumized, and a vacuum valve is installed. The connection between all the sealed shells and the shells of underwater submersibles and vehicles is usually connected by mechanical methods such as wedge ring connection, clamp connection or bolt connection. The parts of these connection methods are not only complex in manufacturing process, difficult to manufacture and high in cost. At present, the vacuum valve is installed on the underwater sealed shell through the threads on the valve sleeve. Especially in the condition of sea depth within 2000m, the operator needs to disassemble multiple parts during the replacement of the vacuum valve. The process is complicated, the labor intensity is high, and it is time-consuming and laborious. It may also cause the product to be bumped and damaged, thereby causing unpredictable losses. SUMMARY

[0003] In view of this, the utility model aims to provide a flange built-in vacuum valve to solve the problems in the background art.

[0004] In order to achieve the above purpose, the technical scheme adopted is as follows:

[0005] The flange built-in vacuum valve comprises a sealing element shell, a valve sleeve is installed on the sealing element shell, a valve core is slidably installed in the center installation hole of the valve sleeve, a valve cover is installed on the upper end of the valve core, and the valve cover is threadedly connected in the center installation hole of the valve sleeve.

[0006] The upper end of the valve sleeve is a flange plate, and the valve sleeve is installed on the sealing element shell through the flange plate.

[0007] An air extraction hole is formed at the axial position of the valve core, and the lower end of the air extraction hole is communicated with the outer wall of the valve core through a radially formed air inlet hole one.

[0008] Preferably, the outer circumferential wall of the valve core is provided with a sealing groove one, a sealing groove two, a sealing groove three and a sealing groove four from top to bottom, the air inlet hole one is located between the sealing groove three and the sealing groove four, and a rubber sealing ring is installed in each of the sealing groove one, the sealing groove two, the sealing groove three and the sealing groove four.

[0009] Preferably, an air inlet hole two is radially formed in the valve sleeve, and the air inlet hole two is communicated with a through groove axially formed on the outer wall of the valve sleeve.

[0010] Preferably, a sealing groove five and a sealing groove six are formed on the outer wall of the valve sleeve, a rubber sealing ring is installed in each of the sealing groove five and the sealing groove six, and the rubber sealing rings on the sealing groove five and the sealing groove six form double sealing with the inner wall of the sealing element shell.

[0011] The lower end of the valve core is preferably screwed with a limiting screw, the lower end of the valve sleeve is provided with a limiting hole, the limiting hole is coaxially arranged with the center installation hole, and the limiting screw slides in the limiting hole along with the valve core.

[0012] The utility model discloses the beneficial effect is:

[0013] The vacuum valve is installed on the sealing element housing, the valve core is completely pressed into the valve sleeve, the sealing groove three and the sealing groove four are located below the air inlet hole two, the valve core blocks the air inlet hole two, and the vacuum valve is in the closed state; the valve cover is removed, the valve core is pulled out, the limiting screw slides to the bottom of the limiting hole, the air inlet hole two is located between the sealing groove three and the sealing groove four, and the air inlet hole one is communicated with the air inlet hole two, and the vacuum valve is opened; the vacuum valve is suitable for the equipment of the sea depth within 2000m, and is installed on the sealing element housing through the flange plate, when replacing and maintaining the vacuum valve, only needs to be disassembled from the flange plate, does not need to disassemble the sealing element housing, the process is simplified, the labor intensity is reduced, time and labor are saved, the sealing property is good, the corrosion resistance is strong, and the service life is long. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings constituting a part of the present application are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0015] Fig. 1 It is a structural schematic view of the present application;

[0016] Fig. 2 It is a structural schematic view of the vacuum valve in the open state in the present application. DETAILED DESCRIPTION

[0017] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0018] In order for the personnel in the technical field to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the personnel in the field without creative labor should belong to the protection scope of the present application.

[0019] Please refer to Figs. 1-2 The flange built-in type vacuum valve comprises a sealing element housing 1, the sealing element housing 1 is provided with a valve sleeve 2, a valve core 3 is slidably arranged in the center installation hole of the valve sleeve 2, a valve cover 4 is arranged at the upper end of the valve core 3, and the valve cover 4 is screwed in the center installation hole of the valve sleeve 2.

[0020] The upper end of the valve sleeve 2 is a flange plate 5, and the valve sleeve 2 is installed on the sealing element housing 1 through the flange plate 5.

[0021] An air extraction hole 6 is arranged at the axial position of the valve core 3, the air extraction hole 6 penetrates the upper end of the valve core 3, and the lower end of the air extraction hole 6 is communicated with the outer wall of the valve core 3 through a radially arranged air inlet hole 7.

[0022] The outer circumferential wall of the valve core 3 is arranged with a sealing groove 8, a sealing groove 9, a sealing groove 10 and a sealing groove 11 from top to bottom, the air inlet hole 7 is located between the sealing groove 10 and the sealing groove 11, and rubber sealing rings are arranged in the sealing groove 8, the sealing groove 9, the sealing groove 10 and the sealing groove 11 to increase the sealing effect of the vacuum valve and prevent seawater from entering the vacuum valve to corrode the equipment; the inner part of the valve sleeve 2 is radially arranged with an air inlet hole 12, the air inlet hole 12 is communicated with a through groove 13 arranged axially on the outer wall of the valve sleeve 2; the outer wall of the valve sleeve 2 is arranged with a sealing groove 14 and a sealing groove 15, rubber sealing rings are arranged in the sealing groove 14 and the sealing groove 15, and the rubber sealing rings on the sealing groove 14 and the sealing groove 15 form double sealing with the inner wall of the sealing element housing 1.

[0023] The lower end of the valve core 3 is threadedly connected with a limiting screw 16, the lower end of the valve sleeve 2 is arranged with a limiting hole 17, the limiting hole 17 is coaxially arranged with the center installation hole, and the limiting screw 16 slides in the limiting hole 17 along with the valve core 3.

[0024] In use, the vacuum valve is installed on the sealing element housing 1, when the valve core 3 is completely pressed into the valve sleeve 2, the sealing groove 10 and the sealing groove 11 are located below the air inlet hole 12, the valve core 3 blocks the air inlet hole 12, and the vacuum valve is in a closed state; the valve cover 4 is removed, the valve core 3 is pulled out, the limiting screw 16 slides to the bottom of the limiting hole 17, at this time, the air inlet hole 12 is located between the sealing groove 10 and the sealing groove 11, and the air inlet hole 7 is communicated with the air inlet hole 12, and the vacuum valve is opened; the vacuum valve is suitable for equipment with a sea depth of 2000m, the vacuum valve is installed on the sealing element housing 1 through the flange plate 5, and when the vacuum valve needs to be replaced and maintained, it only needs to be disassembled from the flange plate 5, without the need to disassemble the sealing element housing 1.

[0025] The preferred embodiments of the present application are described above, but are not used to limit the present application, and various changes and modifications can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flange built-in vacuum valve comprising a seal housing, characterized in that, The valve sleeve is installed on the sealing element housing, a valve core is slidably installed in the central installation hole of the valve sleeve, a valve cover is installed on the upper end of the valve core, and the valve cover is threadedly connected in the central installation hole of the valve sleeve; The upper end of the valve sleeve is a flange plate, and the valve sleeve is installed on the sealing element housing through the flange plate; An air extraction hole is formed at the axial position of the valve core, and the lower end of the air extraction hole is communicated with the outer wall of the valve core through a radially formed air inlet hole one.

2. The flange built-in vacuum valve according to claim 1, characterized in that, A sealing groove one, a sealing groove two, a sealing groove three and a sealing groove four are formed in the outer circumferential wall of the valve core from top to bottom, the air inlet hole one is located between the sealing groove three and the sealing groove four, and a rubber sealing ring is installed in each of the sealing grooves.

3. The flange built-in vacuum valve according to claim 2, characterized in that An air inlet hole two is radially formed in the inner part of the valve sleeve, and the air inlet hole two is communicated with a through groove axially formed on the outer wall of the valve sleeve.

4. The flange built-in vacuum valve according to claim 3, characterized in that A sealing groove five and a sealing groove six are formed on the outer wall of the valve sleeve, a rubber sealing ring is installed in each of the sealing grooves five and six, and the rubber sealing rings on the sealing grooves five and six form double sealing with the inner wall of the sealing element housing.

5. The flange built-in vacuum valve according to claim 1, characterized in that, A limiting screw is threadedly connected to the lower end of the valve core, a limiting hole is formed at the lower end of the valve sleeve, the limiting hole is coaxially arranged with the central installation hole, and the limiting screw slides in the limiting hole along with the valve core.

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