CN218236268U - Exhaust and pressure relief device for vacuum equipment - Google Patents

Abstract

The utility model discloses an exhaust pressure relief device for vacuum apparatus relates to exhaust pressure relief device technical field, which comprises a housin, the bottom of casing is fixed with flange, the inner wall bottom of casing is fixed with spacing, spacing top is provided with solid fixed ring, gu fixed ring's outer wall both sides are fixed with the guide block, the guide block slides and sets up at the guide post outer wall of fixing at spacing top, the top of guide post can be dismantled and be connected with the top cap, gu fixed ring's top has seted up threaded through-hole, threaded through-hole thread sealing connection has the tray, the hole that two symmetries set up is seted up at the top of tray, the downthehole cover has the sealed lid of rotating the connection at the tray top, gu fixed ring's bottom is fixed with the sealing washer, spacing top is fixed with the seal groove with the sealing washer adaptation. The utility model discloses be convenient for dismantle, change inside tray, conveniently clear up and maintain.

Description

Exhaust and pressure relief device for vacuum equipment

Technical Field

The utility model relates to an exhaust pressure relief device technical field especially relates to an exhaust pressure relief device for vacuum apparatus.

Background

Vacuum refers to a state of gas below atmospheric pressure in a given space, and is a physical phenomenon, in "virtual space", sound cannot be transmitted because there is no medium, but the transmission of electromagnetic waves is not affected by vacuum, in fact, in vacuum technology, vacuum is for atmosphere, and partial substances in a specific space are exhausted, so that the pressure is less than a standard atmospheric pressure, and the space is generally called as vacuum or vacuum state. Vacuum devices are devices that create, improve, and/or maintain a vacuum, including vacuum application devices and vacuum obtaining devices.

Vacuum equipment can produce a large amount of gas in the operation process, makes the interior pressure of vacuum equipment produce, if can not effectively bleed, can produce harm and damage to equipment and attached instrument, so can generally equip pressure relief device for vacuum equipment.

The existing pressure relief device is complex to manufacture and expensive in manufacturing cost, and the tray is particularly important to be regularly maintained or replaced as a key loss part for sealing and pressure relief, but the existing tray is installed in a shell through a guide mechanism and is difficult to clean and more troublesome to disassemble.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an exhaust and pressure relief device for vacuum equipment. The advantages are that: the tray is convenient to disassemble and replace, and cleaning and maintenance are convenient.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an exhaust pressure relief device for vacuum apparatus, includes the casing, the bottom of casing is fixed with flange, the inner wall bottom of casing is fixed with spacing, the top of spacing is provided with solid fixed ring, gu fixed ring's outer wall both sides are fixed with the guide block, the guide block slides and sets up at the guide post outer wall of fixing at spacing top, the top of guide post can be dismantled and is connected with the top cap, gu fixed ring's top has seted up the screw thread through-hole, screw thread through-hole thread sealing connection has the tray, the hole that two symmetries set up is seted up at the top of tray, the downthehole cover has the sealed lid of rotation connection at the tray top.

This practicality further sets up to: the bottom of the fixing ring is fixed with a sealing ring, and the top of the limiting strip is fixed with a sealing groove matched with the sealing ring.

This practicality further sets up to: the bottom of tray is opened and is established to the arc structure, and the diameter of tray is less than the internal diameter of spacing.

This practicality further sets up to: the top of the guide column is fixed with the top cover through bolts, and a certain gap exists between the top cover and the shell.

This practicality further sets up to: the top of the tray is in threaded connection with an inserted bar, a sleeve rod is fixedly inserted into the top cover in an inserting mode, and the inserted bar is movably inserted into the sleeve rod in an inserting mode.

This practicality further sets up to: the top outer wall threaded connection of loop bar has fixed cover, be provided with the spring between the top inner wall of fixed cover and the inserted bar.

This practicality further sets up to: the top of tray is fixed with the nut, inserted bar threaded connection is in the nut.

The beneficial effects of the utility model are that:

1. the utility model discloses, fix the flange of casing on vacuum apparatus, when atmospheric pressure in vacuum apparatus is great, can jack-up the tray, make the tray shift up, when the tray receives ascending power, the inserted bar can remove in the loop bar, strengthen the stability to the tray removal, atmospheric pressure is big more, the distance that the tray shifted up is big more, the pressure release of exhausting is fast more, the tray steadily removes under the effect of two guide blocks and guide post, can jack-up sealed lid when atmospheric pressure is lower and carry out slow pressure release exhaust, when needing to change the tray, dismantle the top cap, mention tray and solid fixed ring, the tray can be dismantled to the tray this moment of rotating, be convenient for change or maintain.

2. The utility model discloses, utilize the bottom to open the tray of establishing to the arc structure when receiving atmospheric pressure, shift up that can be better loses heart.

3. The utility model discloses, utilize and add the spring of establishing to carry on spacingly through fixed cover, make the spring form the extrusion to the inserted bar, the spring control that can change different concertina power is to the extrusion force of tray, the distance that the control tray pressurized shifted up, the rational control displacement.

Drawings

Fig. 1 is a schematic perspective view of an exhaust and pressure relief device for vacuum equipment according to the present invention;

fig. 2 is a schematic cross-sectional three-dimensional structure diagram of an exhaust and pressure relief device for vacuum equipment according to the present invention;

fig. 3 is an enlarged schematic structural diagram of a point a in fig. 2 of an exhaust and pressure relief device for vacuum equipment according to the present invention;

fig. 4 is a schematic view of a partial cross-sectional structure of an exhaust and pressure relief device for a vacuum apparatus according to the present invention.

In the figure: 1. a housing; 2. a connecting flange; 3. a fixing ring; 4. inserting a rod; 5. a guide block; 6. a guide post; 7. a top cover; 8. a loop bar; 9. a tray; 10. a sealing cover; 11. a limiting strip; 12. a seal ring; 13. a sealing groove; 14. a nut; 15. fixing a sleeve; 16. a spring.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-4, an exhaust and pressure relief device for vacuum equipment, which comprises a shell 1, the bottom of the shell 1 is fixed with a connecting flange 2, the inner wall bottom of the shell 1 is fixed with a limiting strip 11, the top of the limiting strip 11 is provided with a fixing ring 3, the outer wall both sides of the fixing ring 3 are fixed with guide blocks 5, the guide blocks 5 slide to be arranged on the outer wall of a guide post 6 fixed on the top of the limiting strip 11, the top of the guide post 6 can be detachably connected with a top cover 7, the top of the fixing ring 3 is provided with a threaded through hole, the threaded through hole is in threaded connection with a tray 9, the top of the tray 9 is provided with two symmetrical holes, and the holes are covered with a sealing cover 10 rotatably connected to the top of the tray 9.

Specifically, the bottom of the fixing ring 3 is fixed with a sealing ring 12, the top of the limiting strip 11 is fixed with a sealing groove 13 matched with the sealing ring 12, and the sealing ring 12 can be embedded in the sealing groove 13 under the action of pressure to achieve a better sealing effect.

Specifically, the bottom of tray 9 is opened and is established to the arc structure, and the diameter of tray 9 is less than the internal diameter of spacing strip 11, utilizes the bottom to open and to establish tray 9 for the arc structure when receiving atmospheric pressure, and the going up that can be better loses heart.

Specifically, the top of the guide column 6 is fixed with the top cover 7 through a bolt, and a certain gap exists between the top cover 7 and the shell 1, so that the guide column 6 and the top cover 7 can be fixed and detached conveniently.

Specifically, the top threaded connection of tray 9 has inserted bar 4, and the interlude is fixed with loop bar 8 in top cap 7, and the activity of inserted bar 4 is pegged graft in loop bar 8, and when tray 9 received ascending power, inserted bar 4 can remove in loop bar 8, strengthens the stability to tray 9 removal.

Specifically, the top outer wall threaded connection of loop bar 8 has fixed cover 15, is provided with spring 16 between the top inner wall of fixed cover 15 and the inserted bar 4, utilizes to add the spring 16 of establishing to carry on spacingly through fixed cover 15, make spring 16 form the extrusion to inserted bar 4, the spring 16 control that can change different concertina power is to the extrusion force of tray 9, the distance that control tray 9 pressurized shifted up, the reasonable control displacement.

Specifically, a nut 14 is fixed at the top of the tray 9, the insert rod 4 is in threaded connection with the nut 14, the insert rod 4 is fixed conveniently through the nut 14, the insert rod is convenient to detach, and meanwhile the nut 14 is convenient to hold to rotate the tray 9, so that the tray is convenient to mount and detach.

The working principle is as follows: during the use, fix the flange 2 of casing 1 on vacuum apparatus, when atmospheric pressure in the vacuum apparatus is great, can jack-up tray 9, make tray 9 move up, when tray 9 receives ascending power, inserted bar 4 can remove in loop bar 8, strengthen the stability of removing tray 9, atmospheric pressure is big more, tray 9 shifts up the distance big more, exhaust pressure release is fast more, tray 9 moves steadily under the effect of two guide blocks 5 and guide post 6, can jack-up sealed lid 10 when atmospheric pressure is lower and carry out slow pressure release exhaust, when needing to change tray 9, dismantle top cap 7, mention tray 9 and solid fixed ring 3, tray 9 can be dismantled tray 9 in the rotation this moment, be convenient for change or maintain.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides an exhaust and pressure relief device for vacuum apparatus, includes casing (1), its characterized in that, the bottom of casing (1) is fixed with flange (2), the inner wall bottom of casing (1) is fixed with spacing (11), the top of spacing (11) is provided with solid fixed ring (3), the outer wall both sides of solid fixed ring (3) are fixed with guide block (5), guide block (5) slide to set up at guide post (6) outer wall of fixing at spacing (11) top, the top of guide post (6) can be dismantled and be connected with top cap (7), the screw thread through-hole has been seted up at the top of solid fixed ring (3), screw thread through-hole thread sealing connection has tray (9), the hole that two symmetries set up is seted up at the top of tray (9), the downthehole covers has sealed lid (10) of rotation connection at tray (9) top.

2. The venting and pressure-relieving device for vacuum equipment according to claim 1, wherein a sealing ring (12) is fixed at the bottom of the fixing ring (3), and a sealing groove (13) adapted to the sealing ring (12) is fixed at the top of the limiting strip (11).

3. The exhaust and pressure relief device for the vacuum equipment as claimed in claim 1, wherein the bottom of the tray (9) is provided with an arc structure, and the diameter of the tray (9) is smaller than the inner diameter of the limiting strip (11).

4. The venting and pressure-relieving device for vacuum equipment according to claim 1, wherein the top of the guide post (6) is fixed to the top cover (7) by a bolt, and a gap exists between the top cover (7) and the housing (1).

5. The exhaust and pressure relief device for the vacuum equipment as claimed in claim 3, wherein the top of the tray (9) is connected with an inserted rod (4) by screw thread, a loop rod (8) is fixedly inserted into the top cover (7), and the inserted rod (4) is movably inserted into the loop rod (8).

6. An exhaust and pressure relief device for vacuum equipment according to claim 5, characterized in that the top outer wall of said loop bar (8) is screw connected with a fixed loop (15), and a spring (16) is arranged between the top inner wall of said fixed loop (15) and the inserted bar (4).

7. An exhaust and pressure relief device for vacuum equipment according to claim 6, characterized in that a nut (14) is fixed on the top of the tray (9), and the insert rod (4) is screwed in the nut (14).

Images