Flange high-pressure built-in vacuum valve

Abstract

The utility model relates to the technical field of valves, in particular to a flange high-pressure type built-in 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. A mounting table is arranged on the valve sleeve and located on the lower portion of the flange plate and is of a cylindrical structure. 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 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, 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 high pressure type 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 underwater sealed shells and the shell usually adopts mechanical connection modes such as wedge ring connection, clamp connection or bolt connection. The parts of these connection modes 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, the vacuum valve is suitable for full sea depth condition. During the replacement process, the operator needs to disassemble multiple sets of parts, which is complicated in process, high in labor intensity, time-consuming and labor-consuming, and may 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 high pressure type 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 high pressure type 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] The lower part of the valve sleeve located in the flange plate is an installation table, and the installation table is a cylindrical structure.

[0008] 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.

[0009] Preferably, 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 the sealing groove one, the sealing groove two, the sealing groove three and the sealing groove four.

[0010] Preferably, 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.

[0011] Preferably, a sealing groove five is formed in the outer circumferential wall of the installation table, and a rubber sealing ring is installed in the sealing groove five.

[0012] Preferably, a sealing groove six is formed on the lower end surface of the flange plate, and a rubber sealing ring is installed in the sealing groove six.

[0013] Preferably, the valve cover lower end face is provided with a sealing groove seven, and a rubber sealing ring is installed in the sealing groove seven.

[0014] Preferably, the valve core lower end is threadedly connected with a limiting screw, and the valve sleeve lower end is provided with a limiting hole, and the limiting screw slides in the limiting hole along with the valve core.

[0015] The beneficial effects of the utility model are:

[0016] The vacuum valve is installed on the sealing member shell, when 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 installed on the sealing member shell through the flange plate, when the vacuum valve is replaced and maintained, only the flange plate needs to be disassembled, the sealing member shell does not need to be disassembled, the process is simplified, the labor intensity is reduced, time and labor are saved, the sealing property is good, the corrosion resistance is strong, the service life is long, and the vacuum valve is suitable for use on full-sea-depth equipment. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0018] Fig. 1 It is a structural schematic view of the utility model;

[0019] Fig. 2 It is a structural schematic view of the utility model in the vacuum valve opening state. DETAILED DESCRIPTION

[0020] 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 utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0021] In order for the personnel in the technical field to better understand the present application scheme, the technical scheme in the present application embodiment will be clearly and completely described below in combination with the drawings in the present application embodiment. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than 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.

[0022] Please refer to Figs. 1-2The flange high-pressure type built-in vacuum valve comprises a sealing element housing 1, a valve sleeve 2 installed on the sealing element housing 1, a valve core 3 slidably installed in a central installation hole of the valve sleeve 2, and a valve cover 4 installed on the upper end of the valve core 3 and screwed in the central installation hole of the valve sleeve 2.

[0023] The upper end of the valve sleeve 2 is a flange plate 21, and the valve sleeve 2 is installed on the sealing element housing 1 through the flange plate 21.

[0024] The lower part of the valve sleeve 2 located below the flange plate 21 is an installation table 22, which is in a cylindrical structure to increase the compression strength of the vacuum valve.

[0025] An air extraction hole 5 is formed at the axial position of the valve core 3, and the lower end of the air extraction hole 5 is communicated with the outer wall of the valve core 3 through a radially formed air inlet hole 1.

[0026] The outer circumferential wall of the valve core 3 is formed with a sealing groove 1 7, a sealing groove 2 8, a sealing groove 3 9 and a sealing groove 4 10 from top to bottom, the air inlet hole 1 is located between the sealing groove 3 9 and the sealing groove 4 10, and rubber sealing rings are installed in the sealing grooves 1 7, 2 8, 3 9 and 4 10 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 formed with an air inlet hole 2 1 1, which is communicated with a through groove 1 2 axially formed on the outer wall of the valve sleeve 2; the outer circumferential wall of the installation table 2 2 is formed with a sealing groove 5 1 3, in which a rubber sealing ring is installed; the lower end surface of the flange plate 2 1 is formed with a sealing groove 6 1 4, in which a rubber sealing ring is installed; the rubber sealing rings in the sealing groove 5 1 3 and the sealing groove 6 1 4 can prevent seawater from seeping into the gap between the sealing element housing 1 and the valve sleeve 2 to corrode the equipment; the lower end surface of the valve cover 4 is formed with a sealing groove 7 1 5, in which a rubber sealing ring is installed, to prevent seawater from entering the valve sleeve 2 to corrode the valve sleeve 2 and the valve core 3.

[0027] The lower end of the valve core 3 is threadedly connected with a limiting screw 1 6, and the lower end of the valve sleeve 2 is formed with a limiting hole 1 7 coaxial with the central installation hole, and the limiting screw 1 6 slides in the limiting hole 1 7 along with the valve core 3.

[0028] 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 3 9 and the sealing groove 4 10 are located below the air inlet hole 2 1 1, the valve core 3 blocks the air inlet hole 2 1 1, and the vacuum valve is in a closed state; the valve cover is removed, the valve core 3 is pulled out, the limiting screw 1 6 slides to the bottom of the limiting hole 1 7, at this time, the air inlet hole 2 1 1 is located between the sealing groove 3 9 and the sealing groove 4 10, and the air inlet hole 1 is communicated with the air inlet hole 2 1 1, and the vacuum valve is opened.

[0029] The vacuum valve is installed on the sealing element housing 1 through the flange plate 2 1, and when the vacuum valve needs to be replaced and repaired, it only needs to be removed from the flange plate 2 1, without the need to disassemble the sealing element housing 1.

[0030] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. 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 high pressure flange type 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; The lower part of the valve sleeve located below the flange plate is an installation table, and the installation table is a cylindrical structure; An air extraction hole is arranged 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 arranged air inlet hole one.

2. The flange high-pressure type built-in vacuum valve according to claim 1, characterized by A sealing groove one, a sealing groove two, a sealing groove three and a sealing groove four are arranged on 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 high-pressure type built-in vacuum valve according to claim 2, characterized by An air inlet hole two is radially arranged in the valve sleeve, and the air inlet hole two is communicated with a through groove axially arranged on the outer wall of the valve sleeve.

4. The flange high-pressure type built-in vacuum valve according to claim 3, characterized by A sealing groove five is arranged on the outer circumferential wall of the installation table, and a rubber sealing ring is installed in the sealing groove five.

5. The flange high-pressure type built-in vacuum valve according to claim 4, characterized by A sealing groove six is arranged on the lower end surface of the flange plate, and a rubber sealing ring is installed in the sealing groove six.

6. The flange high-pressure type built-in vacuum valve according to claim 5, characterized by A sealing groove seven is arranged on the lower end surface of the valve cover, and a rubber sealing ring is installed in the sealing groove seven.

7. The high pressure flange type built-in vacuum valve according to claim 1, characterized by A limiting screw is threadedly connected to the lower end of the valve core, a limiting hole is arranged at the lower end of the valve sleeve, and the limiting screw slides in the limiting hole along with the valve core.

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