CN218698337U - Vacuum plug replacement tool - Google Patents

Abstract

The utility model provides a frock is changed to vacuum stopper, its detachable connect on vacuum vessel's vacuum joint, be provided with old vacuum stopper in the vacuum joint, include: the valve comprises an outer sleeve, a moving block, a first valve rod and a second valve rod; the outer sleeve is detachably sleeved on the outer side of the vacuum joint and is internally provided with a containing groove; the movable block is movably arranged at the opening end of the containing groove, and the movable block seals the containing groove to form a containing cavity capable of being in a vacuum state with the outer sleeve; the first valve rod is arranged on the movable block in a telescopic mode, extends into the containing cavity towards the containing cavity to be connected with the old vacuum plug, and retracts back to the containing cavity to enable the old vacuum plug to be pulled out of the vacuum joint; the second valve rod is arranged on the movable block in a telescopic mode, the second connecting portion is used for being connected with a new vacuum plug, the movable block moves to enable the second valve rod to be aligned to the vacuum connector, the second valve rod extends into the accommodating cavity and enables the new vacuum plug to be inserted into the vacuum connector. The vacuum plug can be quickly replaced without destroying the vacuum environment of the vacuum container.

Description

Vacuum plug replacement tool

Technical Field

The utility model relates to a vacuum apparatus technical field, in particular to frock is changed to vacuum plug.

Background

With the development of industry, vacuum containers have become indispensable appliances in the fields of transportation, industrial production and the like. At present, an adsorbent is generally disposed in a high vacuum container or a vacuum pipe interlayer for absorbing substances in a vacuum environment, maintaining the vacuum degree of the vacuum container, and maintaining the heat insulation performance of the vacuum container.

The adsorbent is typically fixed to a vacuum plug. The adsorbent in the interlayer of the vacuum container or the vacuum pipeline loses the adsorption function after being used for a certain period of time and must be replaced. Simultaneously, the rubber ring on the vacuum plug also can age to lose original sealing performance, need carry out the preventative change. However, in the related art, the replacement of the vacuum plug requires the vacuum container or the vacuum pipe interlayer to be subjected to vacuum breaking treatment (vacuum environment destruction), and the vacuum container or the vacuum pipe interlayer is replaced after internal and external air pressures are balanced. There is no device for rapidly replacing the vacuum plug without affecting the vacuum performance of the vacuum container or the vacuum pipeline interlayer.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a need not to break empty to vacuum vessel, just can quick replacement vacuum stopper change frock of stopper.

In order to solve the technical problem, the following technical scheme is adopted in the application:

according to an aspect of the present application, the present application provides a frock is changed to vacuum stopper, its detachable connect on vacuum vessel's vacuum joint, be provided with old vacuum stopper in the vacuum joint, change the frock and include: the valve comprises an outer sleeve, a moving block, a first valve rod and a second valve rod; the outer sleeve is detachably sleeved on the outer side of the vacuum joint, a containing groove is formed in the outer sleeve, and the old vacuum plug can be contained in the containing groove; the movable block is movably arranged at the opening end of the containing groove, the movable block seals the containing groove, and the movable block and the outer sleeve form a containing cavity in a vacuum state; a first valve rod is arranged on the moving block in a telescopic mode, one end of the first valve rod is provided with a first connecting portion, the first valve rod extends into the accommodating cavity and is connected with the old vacuum plug, and the first valve rod retracts back to the accommodating cavity to drive the old vacuum plug to be separated from the vacuum joint; the second valve rod is arranged on the moving block in a telescopic mode, a second connecting portion is arranged at one end of the second valve rod and used for being connected with a new vacuum plug, the moving block moves to enable the second valve rod to be aligned with the vacuum joint, the second valve rod extends into the containing cavity and enables the new vacuum plug to be inserted into the vacuum joint.

In some embodiments, the inner periphery of the accommodating groove is cylindrical, and the outer peripheral wall of the moving block abuts against the inner peripheral wall of the accommodating groove; the moving block can circumferentially rotate around a rotation axis of the moving block; the first valve rod, the second valve rod and the old vacuum plug are positioned on a concentric circle taking the rotating axis of the moving block as the center.

In some embodiments, a first sealing groove is concavely arranged on the inner circumferential wall of the accommodating groove, the first sealing groove extends along the circumferential direction of the accommodating groove, a first sealing ring is arranged in the first sealing groove, and the first sealing ring can abut against the outer circumferential wall of the moving block.

In some embodiments, a handle is convexly arranged on the outer periphery of the moving block, and the handle extends along the direction departing from the moving block; a moving hole is formed in the peripheral side wall of the outer sleeve, the moving hole extends along the moving direction of the moving block, and the handle can move in the moving hole; the moving hole extends towards the opening direction of the accommodating groove, so that the handle and the moving block can conveniently extend into the accommodating groove.

In some embodiments, the included angle between the first and second valve stems to the moving block rotational axis is 90 °, and the moving hole occupies 25% of the circumferential length of the outer sleeve.

In some embodiments, the moving block is linearly movable in a direction perpendicular to the expansion and contraction direction of the first valve stem.

In some embodiments, the moving block is provided with two valve rod connectors, and the first valve rod and the second valve rod respectively penetrate through the two valve rod connectors; a second sealing groove is concavely arranged on the inner periphery of the valve rod joint, and a second sealing ring is arranged in the second sealing groove; the second sealing rings in the two valve rod joints are respectively sleeved on the peripheries of the first valve rod and the second valve rod so as to seal the first valve rod and the second valve rod; the first valve rod and the second valve rod can circumferentially rotate around the axis of the first valve rod and the axis of the second valve rod; the first valve rod is in threaded connection with the old vacuum plug, and the second valve rod is in threaded connection with the new vacuum plug.

In some embodiments, a vacuum port is disposed on the periphery of the outer sleeve, and the accommodating groove is communicated with an external vacuum machine through the vacuum port.

In some embodiments, the outer sleeve protrudes from the vacuum joint, a third sealing groove is concavely formed in the inner circumferential wall of the sleeve, a third sealing ring is arranged in the third sealing groove, and the third sealing ring is sleeved on the outer circumference of the vacuum joint.

In some embodiments, a side wall of the moving block facing the sleeve is concavely provided with a replacing groove, and a distance from a bottom wall of the replacing groove to a bottom wall of the containing groove is larger than the height of the old vacuum plug.

According to the technical scheme, the method has at least the following advantages and positive effects:

in this application, the frock is changed to the vacuum stopper and is connected on vacuum joint, and detachable is connected with new vacuum stopper on the second valve rod. The vacuum machine vacuumizes the accommodating groove. The first valve stem is moved toward the vacuum fitting and connected to the old vacuum plug and then moved away from the vacuum fitting to remove the old vacuum plug. After the old vacuum plug moves into the containing groove, the moving block is moved to align the second valve rod and the new vacuum plug on the second valve rod with the vacuum joint, and the second valve rod drives the new vacuum plug to move towards the vacuum joint so as to plug the vacuum joint, so that the vacuum container is sealed, and the replacement of the vacuum plug is completed. And separating the second valve rod from the new vacuum plug, and breaking the vacuum of the accommodating groove to disassemble and replace the tool. The vacuum plug can be quickly replaced without destroying the vacuum environment of the vacuum container by replacing the tool, so that the replacement and maintenance cost of the vacuum container is reduced, and the working efficiency of the vacuum container is improved.

Drawings

Fig. 1 is a schematic structural diagram of a vacuum plug replacement tool according to the present application.

FIG. 2 is a schematic structural diagram of a vacuum interface in the vacuum plug replacement tool of the present application.

Fig. 3 is a schematic structural view of a vacuum plug and an adsorbent in the vacuum plug replacement tool of the present application.

Fig. 4 is a top view of the structure shown in fig. 1.

FIG. 5 is a cross-sectional view of the vacuum plug replacement tooling sleeve of the present application positioned at a vacuum connection.

Fig. 6 is a partially enlarged view of a point a in fig. 5.

Fig. 7 is a partially enlarged view at B in fig. 5.

The reference numerals are explained below:

10. a vacuum joint; 11. an old vacuum plug; 12. an adsorbent; 13. a new vacuum plug;

100. a jacket; 110. a containing groove; 111. a first seal groove; 112. a first seal ring; 120. moving the hole; 130. a sleeve; 131. a third seal groove; 132. a third seal ring; 133. a sleeve nut; 134. a top plate; 135. sealing and chamfering; 140. a vacuum port;

200. a moving block; 210. replacing the groove; 220. a handle; 231. a valve stem fitting; 232. a valve stem connector cap; 234. a seal reinforcing block; 235. a second seal groove; 236. a second seal ring;

310. a first valve stem; 311. a first connection portion; 312. a first operating lever; 320. a second valve stem; 322. a second operating lever.

Detailed Description

Exemplary embodiments that embody features and advantages of the present application will be described in detail in the following description. It is understood that the present application is capable of many variations in different embodiments without departing from the scope of the application, and that the description and drawings herein are to be taken as illustrative and not restrictive in character.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1 is a schematic structural view of the vacuum plug replacement tool of the present application.

Referring to fig. 1, for ease of understanding and reference, the direction of the X-axis in fig. 1 is the front of the following, and the direction away from the front is the back of the following; the direction of the Y axis in the figure 1 is the left side of the following, and the direction departing from the left side is the back side of the following; the direction of the Z axis in fig. 1 is referred to as upward of the following, and the direction away from the upward is referred to as downward of the following.

FIG. 2 is a schematic structural diagram of a vacuum interface in the vacuum plug replacement tool of the present application.

Fig. 3 is a schematic structural view of a vacuum plug and an adsorbent in the vacuum plug replacement tool of the present application.

And a vacuum joint is arranged on the outer side of the vacuum container or the vacuum interlayer and is used for vacuumizing the vacuum container or the vacuum interlayer. An old vacuum plug is arranged in the vacuum joint to plug the vacuum joint so as to seal the vacuum environment. The vacuum container and the vacuum interlayer are generally provided with a vacuum adsorbent for adsorbing substances in a vacuum environment, maintaining the vacuum degree of the vacuum container and keeping the heat insulation performance of the vacuum container. The adsorbent is generally disposed on the old vacuum plug to facilitate replacement of the old vacuum plug and the adsorbent.

In the direction from top to bottom, the radius of the inner peripheral wall of the vacuum joint is gradually reduced, so that the old vacuum plug and the new vacuum plug can press and seal the vacuum joint under the condition of negative pressure. The outer periphery of the old vacuum plug is matched with the inner peripheral wall of the vacuum joint, and the radius of the old vacuum plug is gradually reduced in the direction from top to bottom so that the old vacuum plug can be conveniently taken out, and the new vacuum plug is aligned with the vacuum joint and extends into the vacuum joint.

Referring to fig. 1, the present application provides a vacuum plug replacement tool, which is detachably connected to a vacuum connector 10 of a vacuum container, so as to detach an old vacuum plug 11 in the vacuum connector 10 and install a new vacuum plug 13 in the vacuum connector 10. The vacuum exchange tool includes an outer housing 100, a moving block 200, a first valve stem 310, and a second valve stem 320. The outer sleeve 100 is provided therein with a receiving groove 110 detachably sleeved on the vacuum port. The moving block 200 is movably disposed at an opening end of the receiving groove 110 to seal the receiving groove 110, and a receiving cavity in a vacuum state is formed between the moving block 200 and the outer casing 100. The first valve rod 310 and the second valve rod 320 are telescopically arranged on the moving block 200, one end of each of the first valve rod 310 and the second valve rod 320 is located in the containing cavity, the first valve rod 310 can be connected with and taken out of an old vacuum plug 11 in the vacuum connector 10, and the second valve rod 320 can be connected with and put in a new vacuum plug 13 to the vacuum connector 10.

When the vacuum container needs to be replaced with a vacuum plug, a new vacuum cup is attached to the second valve stem 320. The moving block 200 is placed on the containing groove 110, the outer sleeve 100 is sleeved on the vacuum connector 10, and then the containing cavity is vacuumized to balance the pressure between the vacuum container and the containing cavity. The old vacuum plug 11 is connected and taken out through the first valve rod 310, the moving block 200 is moved, and then the new vacuum plug 13 is plugged into the vacuum connector 10 through the second valve rod 320, so that the vacuum plug and the adsorbent 12 are replaced in a state that the vacuum plug does not need to be broken, the replacement and maintenance cost of the vacuum container is reduced, and the working efficiency of the vacuum container is improved.

Fig. 4 is a top view of the structure shown in fig. 1.

FIG. 5 is a cross-sectional view of the vacuum plug replacement tooling sleeve of the present application positioned at a vacuum connection.

Referring to fig. 1, 4 and 5, in the present embodiment, the outer sleeve 100 extends in the up-down direction, the upper end surface of the outer sleeve 100 is concavely provided with the accommodating groove 110, and the opening end of the accommodating groove 110 is hermetically connected with the moving block 200, so that an accommodating cavity capable of being in a vacuum state is formed between the outer sleeve 100 and the moving block 200, so as to accommodate the old vacuum plug 11 and the new vacuum plug 13.

A moving hole 120 is formed on the peripheral side wall of the casing 100, the moving hole 120 extends along the moving direction of the moving block 200, and the moving hole 120 extends towards the opening direction of the accommodating groove 110 to form an inlet and outlet portion; parts of the outer sleeve 100 can be accommodated in the moving holes 120, so that the moving block 200 can be conveniently installed, moved and positioned, and the replacement efficiency of the tool is improved. The moving hole 120 is adjacent to the upper end opening end of the receiving groove 110 so as to facilitate the insertion and extraction of the moving block 200. In some embodiments, the access portion extends in an up-down direction. In other embodiments, the access point is located in the middle of the travel hole 120.

In some embodiments, the movable hole 120 occupies 25% of the circumferential length of the outer sleeve 100 in a cross section perpendicular to the up-down direction, so that both ends of the circumferential direction of the movable hole 120 are located at the operating position of the first valve stem 310 and the operating position of the second valve stem 320, respectively. In other embodiments, there are two moving holes 120, and the two moving holes 120 are symmetrically disposed on the casing 100.

Referring to fig. 1, the receiving groove 110 is cylindrical, a plurality of first seal grooves 111 are concavely formed on an inner circumferential wall of the receiving groove 110, the first seal grooves 111 extend along a circumferential direction of the receiving groove 110, and a first seal ring 112 is disposed in the first seal grooves 111. The first sealing ring 112 can abut against the outer peripheral wall of the moving block 200 to seal the accommodating groove 110, so that the sealing performance of the accommodating cavity is improved, and the accommodating cavity is convenient to vacuumize.

Fig. 6 is a partially enlarged view of a portion a in fig. 5.

Referring to fig. 1, 5 and 6, in the present embodiment, the sleeve 130 is protruded from the lower end of the outer sleeve 100, the sleeve 130 is detachably sleeved on the outer circumference of the vacuum connector 10, and the sleeve 130 is communicated with the accommodating groove 110, so that the first valve rod 310 can be connected to the old vacuum plug 11 through the sleeve 130. The new vacuum plug 13 on the second valve stem 320 is placed into the vacuum fitting 10 through the sleeve 130.

The inner peripheral wall of the sleeve 130 is recessed to form a stepped structure, in the direction from top to bottom, the radius of the inner peripheral wall of the upper end of the sleeve 130 is smaller than that of the inner peripheral wall of the lower end of the sleeve 130, the inner peripheral wall of the lower end of the sleeve 130 is matched with the outer peripheral wall of the vacuum joint 10, and the upper end face of the vacuum joint 10 abuts against the upper end of the sleeve 130 to limit the movement of the vacuum joint 10 in the up-down direction.

The inner peripheral wall of the sleeve 130 is concavely provided with a plurality of third sealing grooves 131, a third sealing ring 132 is arranged in the third sealing groove 131, and the third sealing ring 132 can be sleeved on the periphery of the vacuum joint 10. In some embodiments, a third seal groove 131 is located on the inner circumferential wall of the lower end of the sleeve 130. The inner peripheral wall of the upper end of the sleeve 130 is fitted with the inner peripheral wall of the vacuum connector 10 so as to facilitate the entry of the first valve stem 310 and the new vacuum plug 13 into the vacuum connector 10. In other embodiments, the inner peripheral wall of the upper end of the sleeve 130 is smoothly blended with the inner peripheral wall of the vacuum connector 10 to facilitate the movement of the new vacuum plug 13 into the vacuum outlet.

Referring to fig. 1, 5 and 6, a collet nut 133 is disposed at a lower end of the collet 130, an upper end of the collet nut 133 is sleeved at a lower end of the collet 130, the collet nut 133 abuts against a lower end surface of the collet 130, and a lower end of the collet nut 133 is in threaded connection with the vacuum connector 10 to limit the collet 130 on the vacuum connector 10. Sealed chamfer 135 has been seted up to the internal perisporium of sleeve 130 lower extreme, and from last direction down, sealed chamfer 135 outwards extends gradually, and the holding third sealing washer 132 in the sealed chamfer 135. When the collet nut 133 is screwed on the vacuum connector 10, the collet nut 133 is sleeved on and screwed with the vacuum connector 10, and the collet nut 133 abuts against the lower end surface of the collet 130, so that the collet nut 133 presses the third sealing ring 132, thereby sealing the collet 130 and the vacuum connector 10 and improving the sealing performance of the accommodating cavity.

In some embodiments, a top plate 134 is disposed in the sleeve nut 133, the top plate 134 is disposed around the vacuum connector 10 and located at the lower end of the sleeve 130, the lower surface and the peripheral sidewall of the top plate 134 abut against the sleeve nut 133, and the upper surface of the top plate 134 abuts against the lower end surface of the sleeve 130 and the third sealing ring 132, so as to improve the sealing performance between the sleeve 130 and the vacuum connector 10 and prolong the service life of the sleeve 130.

In this embodiment, a vacuum port 140 is formed on a peripheral side wall of the casing 100, the vacuum port 140 is communicated with an external vacuum machine, and the vacuum machine is communicated with the accommodating cavity through the vacuum port 140 for vacuumizing the accommodating cavity, so as to balance the pressure between the vacuum container and the accommodating cavity.

Referring to fig. 1 and 5, in the present embodiment, the moving block 200 is movably disposed on the accommodating groove 110 of the outer casing 100, and covers an opening end of the accommodating groove 110 to close the accommodating groove 110. The moving block 200 is provided with a first valve rod and a second valve rod 320 extending in the vertical direction, and the first valve rod 310 and the second valve rod 320 are retractable in the vertical direction to remove the old vacuum plug 11 and replace the new vacuum plug 13.

The moving block 200 is accommodated in the accommodating groove 110, the moving block 200 extends in the vertical direction, and the moving block 200 is cylindrical. The outer circumferential wall of the moving block 200 abuts against the inner circumferential wall of the receiving groove 110, and the moving block 200 can abut against the first seal ring 112, thereby improving the sealing property between the moving block 200 and the inner circumferential wall of the receiving groove 110. The moving block 200 can rotate around its own rotation axis, so as to drive the first valve rod 310 and the second valve rod 320 to move, so as to switch the positions of the first valve rod 310 and the second valve rod 320. An arc-shaped chamfer is provided on the outer circumference of the lower end of the moving block 200 toward the rotational axis of the moving block 200, and the radius of the moving block 200 is gradually reduced in the direction from the top to the bottom so that the moving block 200 is aligned with and placed in the receiving groove 110.

The first valve stem 310, the second valve stem 320 and the old vacuum plug 11 are located on a concentric circle with the rotation axis of the moving block 200 as the center, so that the first valve stem 310 can be connected with the old vacuum plug 11 and the second valve stem 320 can put the new vacuum plug 13 into the vacuum connector 10.

An accommodating cavity is formed between the lower surface of the moving block 200 and the bottom wall of the accommodating groove 110 for accommodating the old vacuum connector 10 and the new vacuum connector 10. In some embodiments, vacuum port 140 is located on the underside of traveling block 200 so that traveling block 200 does not interfere with the vacuum machine vacuum receiving cavity.

A replacement groove 210 is concavely formed on a side wall of the moving block 200 facing the sleeve 130, and the distance from the bottom wall of the replacement groove 210 to the bottom wall of the accommodating groove is greater than the height of the old vacuum plug 11. When the old vacuum plug 11 is detached from the first valve rod 310 and the new vacuum plug 13 is connected to the second valve rod 320, the old vacuum plug 11 and the new vacuum plug 13 do not affect the movement of the moving block 200. At this time, the space between the bottom of the replacement groove 210 and the bottom of the accommodation groove 110 is an accommodation cavity to be able to be vacuumized. The replacement groove 210 can reduce the volume and weight of the moving block 200, facilitate the detachment, movement, and installation of the moving block 200, and reduce the production cost of the moving block 200.

In some embodiments, the number of the replacement grooves 210 is two, the two replacement grooves 210 are disposed corresponding to the first valve rod 310 and the second valve rod 320, and the cross section of the two replacement grooves 210 is larger than the size of the old vacuum plug 11 and the new vacuum plug 13 in the cross section perpendicular to the up-down direction.

Referring to fig. 1 and 5, in the present embodiment, a handle 220 is protruded from an outer circumferential wall of the moving block 200, and the handle 220 extends in a direction away from the moving block 200. The handle 220 can be placed in the moving hole 120 and can move in the moving hole 120, so that the portion of the handle 220 and the moving block 200 can extend into the receiving groove 110. When the handle 220 is positioned at one end in the moving hole 120, the first valve stem 310 is opposite to the old vacuum plug 11 so that the first valve stem 310 can detach the old vacuum plug 11. When the handle 220 is rotated to move the other end of the hole 120, the second valve stem 320 plugs a new vacuum plug 13 into the vacuum connector 10.

In some embodiments, there are two handles 220, and the two handles 220 are symmetrically disposed along the rotation axis of the moving block 200, so that an operator can move or rotate the moving block 200 through the two handles 220. Thus, the efficiency of mounting and removing the moving block 200 is improved, and the efficiency of replacing the old vacuum plug 11 and the new vacuum plug 13 can also be improved.

In the present embodiment, the first stem 310 and the second stem 320 both extend in the vertical direction, and a first connection portion 311 is disposed at one end of the first stem 310. The first valve stem 310 moves toward the receiving cavity to protrude, and it moves downward to connect the first connection part 311 with the old vacuum plug 11. After the first connection portion 311 is connected to the old vacuum plug 11, the first valve rod 310 moves upward to move and retract the first valve rod 310 away from the receiving cavity, thereby pulling the old vacuum plug 11 out of the vacuum connection 10. In some embodiments, the first connection 311 is threaded with the old vacuum plug 11.

The second valve stem 320 is provided on the moving block 200 to be vertically extendable and retractable, and a second connection portion is provided at one end of the second valve stem 320. The second connecting portion is used for connecting a new vacuum plug 13, the moving block 200 moves to align the second valve rod 320 with the vacuum connector 10, and the second valve rod 320 extends downwards towards the accommodating cavity to insert the new vacuum plug 13 into the vacuum connector 10. The new vacuum plug 13 seals the vacuum container or the vacuum interlayer, so that the replacement efficiency of the adsorbent 12 and the vacuum plug is improved, and the old vacuum plug 11 is prevented from aging and damaging the vacuum environment of the vacuum container.

In the present embodiment, the first valve stem 310, the second valve stem 320 and the old vacuum plug 11 are located on a concentric circle around the rotation axis of the moving block 200, and the included angle between the first valve stem 310 and the second valve stem 320 to the rotation axis of the moving block 200 is 90 °, so that the first valve stem 310 and the second valve stem 320 are switched. The distance between the first valve stem 310 and the second valve stem 320 is greater than the diameter of the old vacuum.

The first and second valve stems 310 and 320 are rotatable circumferentially about their own rotational axes, and the first connection portion 311 of the first valve stem 310 can be screwed to the old vacuum plug 11. The second connection portion of the second valve stem 320 can be threadedly connected with the new vacuum plug 13. When the first valve rod 310 and the second valve rod 320 rotate around the rotation axes, the first valve rod can be connected with or separated from the old vacuum plug 11 and the new vacuum plug 13 respectively.

In some embodiments, a first operating rod 312 is disposed at an end of the first valve rod 310 away from the first connecting portion 311, a second operating rod 322 is disposed at an end of the second valve rod 320 away from the second connecting portion, and both the first operating rod 312 and the second operating rod 322 extend along a horizontal direction, so that an operator can control the first valve rod 310 and the second valve rod 320 to circumferentially rotate around their rotation axes and move up and down through the first operating rod 312 and the second operating rod 322.

Fig. 7 is a partially enlarged view at B in fig. 5.

Referring to fig. 1, 5 and 7, in the present embodiment, the upper surface of the moving block 200 is convexly provided with two valve rod connectors 231, the valve rod connectors 231 extend along the vertical direction, and through holes extending along the vertical direction are formed in the valve rod connectors 231 for accommodating the first valve rod 310 or the second valve rod 320. The first valve rod 310 and the second valve rod 320 respectively penetrate through the two valve rod connectors 231. A plurality of second seal grooves 235 are concavely formed in the inner circumference of the through hole of the stem joint 231, and second seal rings 236 are disposed in the second seal grooves 235. The second sealing rings 236 in the two stem joints 231 are respectively sleeved on the peripheries of the first stem 310 and the second stem 320 to seal the stems.

A stem adapter cover 232 is threadedly coupled to an upper end of the stem adapter 231 to close the stem adapter 231, thereby improving sealing performance between the stem adapter 231 and the first and second valve stems 310 and 320. A sealing reinforcing block 234 is arranged between the valve rod joint 231 and the valve rod joint cover 232, and the sealing reinforcing block 234 is sleeved on the peripheries of the first valve rod 310 and the second valve rod 320.

The upper end of the valve rod joint 231 is provided with a reinforcing groove which is downwards concave at the circumferential side of the through hole, and a second sealing ring 236 is arranged in the reinforcing groove. The seal stiffener 234 includes a stopper abutting against the stem adapter 231 and the stem adapter cover 232, and a pressing portion received in the stiffener groove. The lower end of the pressing portion can abut against the second seal ring 236 in the reinforcing groove to press the second seal ring 236, thereby improving the sealing performance of the gap between the stem joint 231 and the first and second valve stems 310 and 320.

In some embodiments, the stopper portion is integrally formed with the pressing portion. In other embodiments, the first seal ring 112, the second seal ring 236 and the third seal ring 132 are all made of elastic materials, and are deformed under a stress to improve the sealing performance of the tool.

Referring to fig. 1 to 7, in the present embodiment, the vacuum container or vacuum chamber is replaced with the used vacuum plug 11 and the adsorbent 12 thereon. First, the operator rotates the handle 220 and the moving block 200, moves the handle 220 upward to move out of the moving hole 120, and moves the moving block 200 out of the accommodating groove 110 along with the handle 220. The operator connects the new vacuum plug 13 with the second connecting portion of the second valve stem 320, places the handle 220 into the moving hole 120, and places the moving block 200 into the receiving groove 110. The first valve stem 310 and the second valve stem 320 are both located in the receiving cavity.

The sleeve 130 is sleeved on the vacuum connector 10 and fastened to the vacuum connector 10 by a sleeve nut 133. The vacuum port 140 communicates with an external vacuum machine to evacuate the receiving cavity so that the pressure in the receiving cavity and the vacuum container is equalized to facilitate replacement of the old vacuum plug 11.

The handle 220 is rotated such that the handle 220 is positioned at one end of the moving hole 120, at which time the first valve stem 310 is aligned with the old vacuum plug 11. The operator presses the first operating lever 312 downward and brings the first connecting portion 311 into abutment with the old vacuum plug 11. The first connecting part 311 is rotated by rotating the first operating rod 312, so that the first connecting part 311 is screwed with the old vacuum plug 11. The operator moves the first valve stem 310 upward so that the first connection 311 moves the old vacuum plug 11 with the adsorbent thereon out of the vacuum port and into the receiving cavity.

The handle 220 is rotated again to move the handle 220 to the other end of the moving hole 120, and then the first valve stem 310 and the second valve stem 320 are moved, and the second valve stem 320 is aligned with the vacuum connector 10. The operator moves down through the second operating rod 322 and quickly and accurately places a new vacuum plug 13 into the vacuum connector 10 through the sleeve 130 and the smooth transition portion of the vacuum interface. The second valve stem 320 is rotated to separate the new vacuum plug 13 from the second valve stem 320 and then to empty the receiving chamber. At this time, the new vacuum plug 13 is tightly fixed and limited on the vacuum joint 10 under the negative pressure environment of the vacuum container. The operator removes the replacement tool and separates the moving block 200 from the outer housing 100, thereby removing the old vacuum plug 11 on the first valve rod 310 and installing a new vacuum plug 13 on the second valve rod 320, so as to replace the old vacuum plug 11 in another vacuum connector 10.

In another embodiment, the receiving groove 110 is concavely disposed on the upper surface of the outer casing 100, and the moving block 200 is movably disposed at the opening end of the receiving groove 110 to close the receiving groove 110. A receiving chamber is formed between the moving block 200 and the casing 100, which can be evacuated. The moving block 200 can linearly move along the extension direction perpendicular to the valve rods, the first valve rods 310 and the second valve rods 320 are arranged on the moving block 200, the first valve rods 310 and the second valve rods 320 can linearly move along with the moving block 200, so that the replacement tool can be switched between a state that the first valve rods 310 are aligned with the vacuum joints 10 and a state that the second valve rods 320 are aligned with the vacuum joints 10, and the second valve rods 320 are provided with new vacuum plugs 13 to the vacuum joints 10 after the old vacuum plugs 11 are disassembled from the first valve rods 310.

In this application, the vacuum plug replacement tool is connected to the vacuum connector 10, and the second valve rod 320 is detachably connected to a new vacuum plug. The vacuum machine vacuums the receiving groove 110. The first valve stem 310 is moved toward the vacuum connector 10 and connected to the old vacuum plug, and the first valve stem 310 is moved away from the vacuum connector 10 to remove the old vacuum plug. After the old vacuum plug is moved into the receiving groove 110, the moving block 200 is moved to align the second valve stem 320 and the new vacuum plug thereon with the vacuum connector 10, and the second valve stem 320 drives the new vacuum plug to move toward the vacuum connector 10 to plug the vacuum connector 10, thereby sealing the vacuum container and completing the replacement of the vacuum plug. The second valve stem 320 is separated from the new vacuum plug, and the vacuum in the accommodating groove 110 is broken, so that the replacement tool is disassembled. The vacuum plug can be quickly replaced without destroying the vacuum environment of the vacuum container by replacing the tool, so that the replacement and maintenance cost of the vacuum container is reduced, and the working efficiency of the vacuum container is improved.

While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. The utility model provides a frock is changed to vacuum stopper, its detachable connect on vacuum vessel's vacuum joint, be provided with old vacuum stopper in the vacuum joint, its characterized in that includes:

the outer sleeve is detachably sleeved on the outer side of the vacuum connector, a containing groove is formed in the outer sleeve, and the old vacuum plug can be contained in the containing groove;

the moving block is movably arranged at the opening end of the accommodating groove, the moving block seals the accommodating groove, and the moving block and the outer sleeve form an accommodating cavity which can be in a vacuum state;

the first valve rod is arranged on the moving block in a telescopic mode, one end of the first valve rod is provided with a first connecting part, the first valve rod extends into the accommodating cavity and enables the first connecting part to be connected with the old vacuum plug, and the first valve rod retracts back to the accommodating cavity to drive the old vacuum plug to be separated from the vacuum joint;

the second valve rod is arranged on the moving block in a telescopic mode, one end of the second valve rod is provided with a second connecting portion, the second connecting portion is used for being connected with a new vacuum plug, the moving block moves to enable the second valve rod to be aligned to the vacuum connector, the second valve rod extends towards the containing cavity, and the new vacuum plug is inserted into the vacuum connector.

2. The tool for replacing the movable block is characterized in that the inner circumference of the containing groove is cylindrical, and the outer circumferential wall of the movable block abuts against the inner circumferential wall of the containing groove; the moving block can circumferentially rotate around a rotation axis of the moving block; the first valve rod, the second valve rod and the old vacuum plug are positioned on a concentric circle taking the rotating axis of the moving block as the center.

3. The tool for replacing the moving block comprises a moving block, and is characterized in that a first sealing groove is concavely arranged on the inner peripheral wall of the accommodating groove and extends along the circumferential direction of the accommodating groove, and a first sealing ring is arranged in the first sealing groove and can abut against the outer peripheral wall of the moving block.

4. The tool for replacing the moving block is characterized in that a handle is convexly arranged on the outer periphery of the moving block and extends in a direction away from the moving block; a moving hole is formed in the peripheral side wall of the outer sleeve, the moving hole extends along the moving direction of the moving block, and the handle can move in the moving hole; the moving hole extends towards the opening direction of the accommodating groove, so that the handle and the moving block can conveniently extend into the accommodating groove.

5. The tool for replacing the valve seat assembly of claim 4, wherein an included angle between the first valve rod and the second valve rod to the rotating axis of the moving block is 90 degrees, and the moving hole occupies 25% of the circumferential length of the outer sleeve.

6. The tool for replacing according to claim 1, wherein the moving block can linearly move along a direction perpendicular to the expansion and contraction direction of the first valve rod.

7. The tool for replacing the valve rod of the automobile seat cover assembly according to claim 1, wherein two valve rod connectors are arranged on the moving block, and the first valve rod and the second valve rod penetrate through the two valve rod connectors respectively; a second sealing groove is concavely arranged on the inner periphery of the valve rod joint, and a second sealing ring is arranged in the second sealing groove; the second sealing rings in the two valve rod joints are respectively sleeved on the peripheries of the first valve rod and the second valve rod so as to seal the first valve rod and the second valve rod; the first valve rod and the second valve rod can circumferentially rotate around the axis of the first valve rod and the axis of the second valve rod; the first valve rod is in threaded connection with the old vacuum plug, and the second valve rod is in threaded connection with the new vacuum plug.

8. The replacement tool according to claim 1, wherein a vacuum port is provided on a peripheral side of the outer sleeve, and the accommodating groove is communicated with an external vacuum machine through the vacuum port.

9. The replacement tool according to claim 1, wherein a sleeve protrudes from the outer sleeve corresponding to the vacuum joint, a third sealing groove is concavely formed in the inner peripheral wall of the sleeve, a third sealing ring is arranged in the third sealing groove, and the third sealing ring is sleeved on the outer periphery of the vacuum joint.

10. The replacement tool according to claim 9, wherein a replacement groove is concavely formed in one side wall of the moving block, which faces the sleeve, and the distance from the bottom wall of the replacement groove to the bottom wall of the containing groove is larger than the height of the old vacuum plug.

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