Plane sealing pressure-bearing screwed plug

Abstract

The utility model provides a plane sealing pressure-bearing screwed plug in the field of machinery. Comprising a stud, an arc limiting groove, a notch, a gland and a hexagonal screw spindle, the stud is arranged at one end of the plane sealing pressure-bearing screwed plug, the hexagonal screw spindle is arranged at the other end of the plane sealing pressure-bearing screwed plug, the gland is arranged between the stud and the hexagonal screw spindle, the arc limiting groove is formed in the gland, and the centers of the stud, the gland and the arc limiting groove are collinear; notches are formed in the arc limiting groove in a circular ring array mode. And the height of the arc limiting groove is 1 / 3 of the thickness of the gasket. And the four notches are uniformly distributed at an angle of 90 degrees. The compressed gasket evenly extends in the radial direction of the arc limiting groove after the arc limiting groove is formed in the gland, the gasket cannot break through limitation of the arc limiting groove, displacement of the gasket is avoided, and correct limiting and sealing of the gasket are achieved. Notches are formed in the arc limiting grooves, crowbars are inserted into the notches in sequence, the gaskets can be warped up from the arc limiting grooves, and disassembly of the scrapped gaskets is completed. The pressure-bearing plug is suitable for being used as a plane sealing pressure-bearing plug.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mechanical, especially to plane seal pressure plug. BACKGROUND

[0002] The equipment with plane seal machine oil drain hole, pipeline with plane seal welded joint, heat exchanger joint with plane seal and other seals involving internal thread and larger plane generally adopt ordinary structure plug and gasket for sealing. The sealing position is prohibited from running, leaking, dripping and leaking, therefore, the tetrafluoroethylene gasket or red copper gasket is generally used.

[0003] However, the present inventors found that the above-mentioned technology has at least the following technical problems in the process of implementing the technical scheme of the present application:

[0004] Since the thread root of the pressure plug is designed with a tool withdrawal groove during machining, the relative plug thread outer circle is smaller, and the gap is larger after the gasket is inserted, which often causes the gasket to move to one side or the tetrafluoroethylene gasket to be thinned greatly after being pressed by external force, seriously affecting the sealing effect.

[0005] The above-mentioned phenomena not only have poor sealing effect, but also cause secondary rework. Therefore, a plane seal pressure plug with simple design and convenient use is needed. SUMMARY

[0006] In order to solve the problems existing in the prior art, the present application provides a plane seal pressure plug for correct positioning and installation of the gasket. The plug is provided with an arc limiting groove on the cover to control the extension direction of the gasket, thereby solving the technical problems of gasket positioning and sealing.

[0007] The present application adopts the following scheme to solve the technical problems:

[0008] The plane seal pressure plug comprises a stud, an arc limiting groove, an opening, a cover and a hexagonal screw.

[0009] The plane seal pressure plug is provided with a stud at one end and a hexagonal screw at the other end, and the cover is arranged between the stud and the hexagonal screw. The arc limiting groove is arranged on the cover, wherein the centers of the stud, the cover and the arc limiting groove are collinear. The opening is arranged in an array on the arc limiting groove.

[0010] In order to further solve the technical problems of the present application, the height of the arc limiting groove is 1 / 3 of the thickness of the gasket.

[0011] Further, the opening is four, which is evenly distributed at 90°.

[0012] The technical scheme provided in the embodiment of the present application has at least the following technical effects or advantages:

[0013] 1. Since the technical scheme of arranging the circular-arc limiting groove on the gland is adopted in the embodiment of the present application, the compressed gasket uniformly extends along the circular-arc limiting groove in the radial direction, and the gasket cannot break through the limitation of the circular-arc limiting groove, thereby avoiding the displacement of the gasket, effectively solving the technical problem of gasket limiting and sealing in the prior art, and thereby realizing the technical effect of correct limiting and sealing of the gasket.

[0014] 2. Since the technical scheme of arranging the notches on the circular-arc limiting groove is adopted in the embodiment of the present application, the notch circular rings are arranged on the circular-arc limiting groove, and the pry bar is inserted from the notches in sequence, which can lift the gasket from the circular-arc limiting groove to complete the disassembly of the scrapped gasket, effectively solving the technical problem of disassembly of the gasket in the prior art, and thereby realizing the technical effect of simple structure of the gasket and convenient construction.

[0015] It is suitable to be used as a flat sealing pressure-bearing gasket. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 It is a front view of the embodiment;

[0018] Figure 2 It is a top view of the embodiment.

[0019] In the drawings, 1. stud, 2. circular-arc limiting groove, 3. notch, 4. gland, 5. hexagonal screw. DETAILED DESCRIPTION

[0020] The technical schemes in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] The embodiment of the present application provides a plane sealing pressure-bearing plug, solves the problem that the gasket is easily displaced in the prior art, and realizes the limiting and sealing of the gasket by using the circular arc limiting groove 2 in the gland 4.

[0022] As shown in the figure, the plane sealing pressure-bearing plug comprises a threaded stud 1, a circular arc limiting groove 2, a notch 3, a gland 4 and a hexagonal screw 5, the threaded stud 1 is arranged at one end of the plane sealing pressure-bearing plug, the hexagonal screw 5 is arranged at the other end, the threaded stud 1 and the hexagonal screw 5 are provided with the gland 4, the circular arc limiting groove 2 is arranged on the gland 4 and is used for limiting the gasket, so that the gasket is uniformly extended in the radial direction, wherein the centers of the threaded stud 1, the gland 4 and the circular arc limiting groove 2 are collinear; the notch 3 is arranged in an annular array on the circular arc limiting groove 2 and is used for dismounting the scrapped gasket.

[0023] In order to ensure the stability of the structure of the embodiment, the height of the circular arc limiting groove 2 is 1 / 3 of the thickness of the gasket.

[0024] In order to optimize the structure of the embodiment, the four notches 3 are uniformly distributed at 90°.

[0025] The technical scheme in the above embodiment of the present application has at least the following technical effects or advantages:

[0026] Since the circular arc limiting groove 2 is arranged on the gland 4, the compressed gasket is uniformly extended in the radial direction along the circular arc limiting groove 2, and then the gasket cannot break through the limitation of the circular arc limiting groove 2, so that the displacement of the gasket is avoided, thereby realizing the limiting and sealing of the gasket.

[0027] Since the notch 3 is arranged on the circular arc limiting groove 2 and the notch 3 is arranged in an annular array on the circular arc limiting groove 2, the crowbar is inserted into the notch 3 in sequence, so that the gasket can be lifted from the circular arc limiting groove 2, and the dismounting of the scrapped gasket is completed.

[0028] The working principle of the embodiment is as follows:

[0029] The compression amount of the gasket during sealing is usually less than 2 / 3 of the thickness of the gasket, the height of the circular arc limiting groove 2 is 1 / 3 of the thickness of the sealing gasket, therefore, the compressed gasket cannot break through the limitation of the circular arc limiting groove, is uniformly extended in the radial direction, realizes the correct limiting and installation of the gasket, and achieves the sealing effect.

[0030] Meanwhile, the four notches 3 are distributed at 90°, and the scrapped gasket can be taken out only by inserting the crowbar into the notches 3 from four directions.

[0031] The working process of the embodiment is as follows:

[0032] Firstly, the enhanced tetrafluoroethylene gasket or red copper gasket is installed in the circular arc limiting groove 2;

[0033] Secondly, clockwise locking flat sealing pressure packing plug;

[0034] Finally, when the flat sealing pressure packing plug locking reaches the dead point, that is, the top of the circular arc limiting groove 2; when the scrapped gasket is removed, it is only necessary to insert a crowbar from the four direction apertures 3.

[0035] The features of the embodiment are:

[0036] The embodiment solves the technical problems of correct limiting installation and sealing of the flat sealing gasket. The packing plug is simple in design and convenient in construction, and is suitable for various flat sealing gaskets. It has the characteristics of reliable limiting and good sealing effect. It is suitable for use as a flat sealing pressure packing plug.

[0037] Finally, it should be pointed out that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. Flat sealing pressure plug, its characteristics are: It comprises a stud (1), an arc limiting groove (2), a notch (3), a pressure cover (4) and a hexagonal screw ingot (5); A stud (1) is provided at one end of the plane sealing pressure-bearing screw plug, and a hexagonal screw ingot (5) is provided at the other end; a pressure cover (4) is provided between the stud (1) and the hexagonal screw ingot (5); a circular arc limiting groove (2) is provided on the pressure cover (4), wherein the centers of the stud (1), the pressure cover (4) and the circular arc limiting groove (2) are collinear; and a notch (3) is provided in a circular ring array on the circular arc limiting groove (2).

2. The flat sealing pressure-bearing plug according to claim 1, characterized in that: The height of the arc limiting groove (2) is 1 / 3 of the thickness of the gasket.

3. The flat sealing pressure-bearing plug according to claim 1 is characterized in that: There are four notches (3) uniformly distributed at 90°.

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