Static press plug sealing structure

Abstract

The utility model discloses a static pressure machine plug sealing structure which comprises a static pressure machine, a cavity is annularly formed in a sealing ring, an assembly which is fixedly connected with the static pressure machine and is used for inflating and exhausting the cavity is arranged over a plug, and the output end of the assembly which is used for inflating and exhausting the cavity is communicated with the cavity in the sealing ring. The radius of the circle where the outer arc face of the sealing ring is located is smaller than the radius of the circle where the arc face of the plug is located by 1-3 mm, the distance between the inner walls above the 1 / 2 height of the storage cavity is gradually increased from bottom to top, and the distance between the inner walls below the 1 / 2 height of the storage cavity is equal to the width of the sliding plate. The assembly for inflating or exhausting the cavity inflates or exhausts the cavity in the sealing ring, the cavity is inflated to enable the sealing ring to expand to be attached to the inner wall of the treatment bin for sealing, and when the cavity is exhausted, the sealing ring becomes flat to be separated from the inner wall of the treatment bin; the contact between the plug and the inner wall of the treatment bin in the sliding process of the sealing ring is reduced.

Description

Technical field:

[0001] The utility model relates to the technical field of sealing, in particular to a static pressure machine plug sealing structure. Background technology:

[0002] Static press is an indispensable equipment in the process of compressing electrical materials. During use, the electrical materials to be compressed are added into the processing chamber, and then the hydraulic pressure is operated to move the plug with a sealing ring to seal the top of the processing chamber, and then medium oil is injected from the bottom of the processing chamber to compress the electrical materials inside the processing chamber.

[0003] The existing sealing structure is mainly composed of a sealing ring, which is sleeved on the side wall of the plug. The outer arc diameter of the sealing ring is slightly larger than the diameter of the plug. The plug drives the sealing ring to move and fits the inner wall of the processing chamber and then continues to move. The processing chamber squeezes the outer arc of the sealing ring to deform the sealing ring to achieve sealing between the plug and the processing chamber. The plug repeatedly drives the sealing ring to move and rubs against the inner wall of the processing chamber, causing the sealing ring to wear and resulting in poor sealing between the plug and the processing chamber. Utility model content:

[0004] To this end, the purpose of the utility model is to provide a static compressor plug sealing structure to overcome the existing technology because the existing sealing structure is mainly composed of a sealing ring, the sealing ring is sleeved on the side wall of the plug, the outer arc diameter of the sealing ring is slightly larger than the diameter of the plug, the plug drives the sealing ring to move and fits the inner wall of the processing chamber and then continues to move, the processing chamber squeezes the outer arc of the sealing ring to deform the sealing ring to achieve the sealing between the plug and the processing chamber, the plug repeatedly drives the sealing ring to move and rubs against the inner wall of the processing chamber, causing the sealing ring to wear and resulting in poor sealing between the plug and the processing chamber.

[0005] The utility model is implemented by the following technical solutions:

[0006] A static press plug sealing structure comprises a static press, wherein the bottom end of the static press is fixedly connected to a plug by hydraulic means, a placement groove is provided at the side end of the plug, an inner sealing ring is slidably sleeved on the plug, the sealing ring is arranged in the placement groove, the radius of the circle where the outer arc surface of the sealing ring is located is smaller than the radius of the circle where the arc surface of the plug is located, a cavity is provided in an annular manner inside the sealing ring, a component for inflating and deflating the cavity fixedly connected to the static press is provided directly above the plug, and the output end of the component for inflating and deflating the cavity is connected to the cavity inside the sealing ring.

[0007] Preferably, the radius of the circle where the outer arc surface of the sealing ring is located is 1mm-3mm smaller than the radius of the circle where the arc surface of the plug is located.

[0008] Preferably, the component for inflating and exhausting the cavity includes a barrel body fixedly connected to a static pressure machine, a storage cavity is formed between the static pressure machine and the barrel body, a slide plate which fits the inner wall of the barrel body is slidably provided in the storage cavity, a plurality of connecting tubes are evenly and fixedly connected to the bottom end of the slide plate, the bottom end of the connecting tube passes through the barrel body, the plug, and the positioning hole in sequence and is connected to the cavity, the connecting tube is slidably connected to the barrel body, the connecting tube is fixedly connected to the plug, the positioning hole is provided on the top surface of the sealing ring and communicates with the cavity, the connecting tube connects the cavity with the storage cavity, two sealing rings are slidably sleeved on the vertical tube of the connecting tube, the sealing ring at the top is arranged in the barrel body and fixedly connected to its inner surface, the sealing ring at the bottom is arranged in the plug and fixedly connected to it, and the bottom surface of the sealing ring at the bottom fits the top surface of the sealing ring.

[0009] Preferably, the longitudinal cross-section of the connecting pipe is T-shaped, the outer diameter of the vertical pipe portion of the connecting pipe inserted into the positioning hole gradually increases from bottom to top, and the shape of the positioning hole matches the vertical pipe of the connecting pipe.

[0010] Preferably, the inner wall spacing above 1 / 2 of the height of the storage cavity gradually increases from bottom to top, and the inner wall spacing below 1 / 2 of the height of the storage cavity is equal to the width of the slide plate.

[0011] Preferably, the side wall where the sealing ring fits with the plug is an inclined surface, and the inclined surface is arranged to be inclined downward along a vertical line direction close to the center of the plug, and the shape of the placement groove matches the sealing ring.

[0012] The advantages of the utility model are as follows: a cavity is opened in the sealing ring, and a component for inflating or deflating the cavity inflates or deflates the cavity in the sealing ring. Inflating the cavity causes the sealing ring to expand and fit against the inner wall of the processing chamber to seal. When deflating the cavity, the sealing ring becomes flat and separates from the inner wall of the processing chamber, thereby reducing the contact between the sealing ring and the inner wall of the processing chamber during the sliding process driven by the plug. Description of the drawings:

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is the structural diagram of the utility model;

[0015] Figure 2 This is the front view of the structure of the utility model;

[0016] Figure 3 It is a three-dimensional diagram of the structure of the utility model.

[0017] In the figure: static press 1, plug 2, placement groove 3, sealing ring 4, cavity 5, barrel 6, storage cavity 7, slide plate 8, connecting pipe 9, sealing ring 10, positioning hole 11. Specific implementation method:

[0018] In order to make the purpose and advantages of the utility model more clearly understood, the utility model is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0019] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0020] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0021] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0022] like Figure 1-Figure 3 As shown, the utility model provides the following technical solutions: a static press plug sealing structure, including a static press 1, the bottom end of the static press 1 is fixedly connected with a plug 2 by hydraulic pressure, the side end of the plug 2 is provided with a placement groove 3, the sliding sleeve of the plug 2 is provided with an inner sealing ring 4, the sealing ring 4 is arranged in the placement groove 3, the radius of the circle where the outer arc surface of the sealing ring 4 is located is smaller than the radius of the circle where the arc surface of the plug 2 is located, a cavity 5 is opened in an annular manner inside the sealing ring 4, and a component for inflating and exhausting the cavity 5 fixedly connected to the static press 1 is provided directly above the plug 2, and the output end of the component for inflating and exhausting the cavity 5 is connected to the cavity 5 inside the sealing ring 4.

[0023] Please combine Figure 1As shown, during use, the electrical material that needs to be compressed is added into the processing chamber, and then the hydraulic pressure is operated to drive the plug to move and insert it from the top of the processing chamber, the plug drives the sealing ring 4 to move and gradually enter the processing chamber, the sealing ring 4 drives the cavity 5 to move, and the plug drives the components for pumping air into the cavity 5 to pump air into the cavity 5. The gas in the cavity 5 gradually increases, causing the sealing ring 4 to expand and fit the inner wall of the processing chamber to perform a sealing operation between the processing chamber and the plug 2.

[0024] Then, dielectric oil is injected from the bottom of the processing chamber to compress the electrical materials inside the processing chamber. After the electrical materials are compressed, the dielectric oil in the processing chamber is extracted, and then the hydraulic pressure is operated to drive the plug to move. The plug drives the components for inflating and exhausting the cavity 5 to extract the air in the cavity 5, so that the sealing ring 4 gradually becomes flat and separates from the inner wall of the processing chamber. After the sealing ring 4 is separated from the inner wall of the processing chamber, the plug continues to drive the sealing ring 4 to slide out of the processing chamber, reducing the contact between the sealing ring 4 and the inner wall of the processing chamber during the sliding process driven by the plug, thereby reducing the friction between the sealing ring 4 and the inner wall of the processing chamber and reducing the damage to the sealing ring 4.

[0025] The radius of the circle where the outer arc surface of the sealing ring 4 is located is 1mm-3mm smaller than the radius of the circle where the arc surface of the plug 2 is located.

[0026] Please combine Figure 1 As shown, during use, the radius of the circle where the outer arc surface of the sealing ring 4 is located is smaller than the radius of the circle where the arc surface of the plug 2 is located, so that the sealing ring 4 contacts the inner wall of the processing chamber, thereby reducing the wear of the sealing ring 4.

[0027] The component for inflating and exhausting the cavity 5 includes a barrel body 6 fixedly connected to the static press 1, a storage cavity 7 is formed between the static press 1 and the barrel body 6, a slide plate 8 is slidably provided in the storage cavity 7 and fits the inner wall of the barrel body 6, and a plurality of connecting pipes 9 are evenly and fixedly connected to the bottom end of the slide plate 8, the bottom end of the connecting pipe 9 passes through the barrel body 6, the plug 2, and the positioning hole 11 in sequence and is connected to the cavity 5, the connecting pipe 9 is slidably connected to the barrel body 6, the connecting pipe 9 is fixedly connected to the plug 2, the positioning hole 11 is opened on the top surface of the sealing ring 4 and communicates with the cavity 5, the connecting pipe 9 connects the cavity 5 with the storage cavity 7, and two sealing rings 10 are slidably sleeved on the vertical pipe of the connecting pipe 9, the top sealing ring 10 is arranged in the barrel body 6 and fixedly connected to its inner surface, the bottom sealing ring 10 is arranged in the plug 2 and fixedly connected to it, and the bottom surface of the bottom sealing ring 10 fits the top surface of the sealing ring 4.

[0028] Please combine Figure 1As shown, during use, the hydraulic pressure drives the plug to move, the plug drives the connecting pipe 9 to move, the connecting pipe 9 drives the slide 8 to slide in the storage chamber 7, and the movement of the slide 8 realizes the effect of pumping the gas in the storage chamber 7 at the bottom of the slide 8 in the storage chamber 7 along the connecting pipe 9 into the cavity 5, or realizes the effect of pumping the gas in the cavity 5 into the storage chamber 7 at the bottom of the slide 8 along the connecting pipe 9, thereby realizing the operation of pumping air into the cavity 5, and the setting of the sealing ring 10 improves the sealing of the connection.

[0029] The longitudinal section of the connecting pipe 9 is T-shaped. The outer diameter of the vertical pipe portion of the connecting pipe 9 inserted into the positioning hole 11 gradually increases from bottom to top. The shape of the positioning hole 11 matches the vertical pipe of the connecting pipe 9 .

[0030] The longitudinal cross-section of the connecting tube 9 is T-shaped to facilitate the connection between the cavity 5 and the storage cavity 7, so that there is no need to open a hole on the surface of the connecting tube 9 to connect the cavity 5 and the storage cavity 7. The outer diameter of the vertical tube part of the connecting tube 9 inserted into the positioning hole 11 gradually increases from bottom to top, which facilitates the positioning of the positioning hole 11 and the connecting tube 9 when replacing a new sealing ring 4.

[0031] The inner wall spacing above 1 / 2 of the height of the storage cavity 7 gradually increases from bottom to top, and the inner wall spacing below 1 / 2 of the height of the storage cavity 7 is equal to the width of the slide plate 8.

[0032] Please combine Figure 1 As shown, during use, when the slide plate 8 slides downward and is above 1 / 2 of the height of the storage chamber 7, the slide plate 8 will not compress the air inside the storage chamber 7 into the cavity 5, so that the sealing ring 4 will not expand at this time, and the sealing ring 4 has gradually slid into the processing chamber at this time, reducing the contact between the sealing ring 4 and the processing chamber. When the slide plate 8 slides downward and gradually slides below 1 / 2 of the height of the storage chamber 7, the slide plate 8 will squeeze the gas in the storage chamber 7 below the slide plate 8 and enter the cavity 5 along the connecting pipe 9.

[0033] The side wall where the sealing ring 4 fits with the plug 2 is an inclined surface, and the inclined surface is arranged to be inclined downward along the vertical straight line direction close to the center of the plug 2, and the shape of the placement groove 3 matches the sealing ring 4.

[0034] Please combine Figure 1 As shown, when the sealing ring 4 needs to be replaced, the old sealing ring 4 is removed and then a new sealing ring 4 is put on. The side wall of the sealing ring 4 that fits the plug 2 is an inclined surface and the inclined surface is arranged downwardly along the vertical straight line direction close to the center of the plug 2, so that the shape of the sealing ring 4 is a trumpet shape with the opening facing upward, which is convenient for positioning the sealing ring 4 when it is put on the plug 2.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A static press plug sealing structure, comprising a static press, wherein the bottom end of the static press is fixedly connected to a plug by hydraulic pressure, a placement groove is provided at the side end of the plug, an inner sealing ring is slidably sleeved on the plug, and the sealing ring is arranged in the placement groove, characterized in that: The radius of the circle where the outer arc surface of the sealing ring is located is smaller than the radius of the circle where the arc surface of the plug is located. A cavity is opened in an annular manner inside the sealing ring. A component for inflating and deflating the cavity, which is fixedly connected to a static press, is provided directly above the plug. The output end of the component for inflating and deflating the cavity is connected to the cavity inside the sealing ring.

2. A static press plug sealing structure according to claim 1, characterized in that: The radius of the circle where the outer arc surface of the sealing ring is located is 1mm-3mm smaller than the radius of the circle where the arc surface of the plug is located.

3. A static press plug sealing structure according to claim 2, characterized in that: The component for inflating and exhausting the cavity includes a barrel body fixedly connected to a static pressure machine, a storage cavity is formed between the static pressure machine and the barrel body, a slide plate which is slidably provided in the storage cavity and fits with the inner wall of the barrel body, a plurality of connecting pipes are evenly and fixedly connected to the bottom end of the slide plate, the bottom end of the connecting pipe passes through the barrel body, the plug and the positioning hole in sequence and is connected with the cavity, the connecting pipe is slidably connected to the barrel body, the connecting pipe is fixedly connected to the plug, the positioning hole is provided on the top surface of the sealing ring and communicates with the cavity, the connecting pipe connects the cavity with the storage cavity, and two sealing rings are slidably sleeved on the vertical pipe of the connecting pipe, the sealing ring at the top is arranged in the barrel body and fixedly connected to its inner surface, the sealing ring at the bottom is arranged in the plug and fixedly connected to it, and the bottom surface of the sealing ring at the bottom fits with the top surface of the sealing ring.

4. A static press plug sealing structure according to claim 3, characterized in that: The longitudinal section of the connecting pipe is T-shaped, and the outer diameter of the vertical pipe portion of the connecting pipe inserted into the positioning hole gradually increases from bottom to top. The shape of the positioning hole matches the vertical pipe of the connecting pipe.

5. A static press plug sealing structure according to claim 3 or 4, characterized in that: The inner wall spacing above 1 / 2 of the height of the storage cavity gradually increases from bottom to top, and the inner wall spacing below 1 / 2 of the height of the storage cavity is equal to the width of the slide plate.

6. A static press plug sealing structure according to any one of claims 1 to 4, characterized in that: The side wall where the sealing ring fits with the plug is an inclined surface, and the inclined surface is arranged to be inclined downward along a vertical straight line direction close to the center of the plug, and the shape of the placement groove matches the sealing ring.

Images