CN211778963U

CN211778963U - Sealing structure of vacuum furnace

Info

Publication number: CN211778963U
Application number: CN202020117586.0U
Authority: CN
Inventors: 夏磊
Original assignee: Shanghai Naien Trading Co ltd
Current assignee: Shanghai Naien Trading Co ltd
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2020-10-27
Anticipated expiration: 2030-01-18

Abstract

The utility model relates to a vacuum furnace technical field discloses a seal structure of vacuum furnace, it includes furnace body and the bell of fixed connection on the furnace body, the outside fixedly connected with support piece of furnace body, the bell includes enclosing cover and inner cup, enclosing cover and inner cup are protruding form, it is protruding that the direction of furnace body is kept away from to inner cup and enclosing cover orientation, one side fixedly connected with sealing member that the inner cup is close to the furnace body, the opening periphery of furnace body is seted up the seal groove that supplies the sealing member embedding, the sealing member is equipped with a plurality ofly, what the seal groove corresponds also is provided with a plurality ofly, the fastener of the fixed bell of side fixedly connected with of enclosing cover, the. The utility model discloses have the effect that improves the vacuum furnace leakproofness.

Description

Sealing structure of vacuum furnace

Technical Field

The utility model belongs to the technical field of the vacuum furnace technique and specifically relates to a seal structure of vacuum furnace is related to.

Background

In the vacuum furnace, a vacuum system (formed by elaborately assembling elements such as a vacuum pump, a vacuum measuring device, a vacuum valve and the like) is utilized to discharge partial substances in the furnace chamber in a specific space of the furnace chamber, so that the pressure in the furnace chamber is less than a standard atmospheric pressure, and the space in the furnace chamber realizes a vacuum state.

The sealing structure comprises a furnace body, an opening is formed in the upper end of the furnace body, the sealing structure comprises an annular boss surrounding the opening in a circle and arranged on the upper end face of the furnace body, a furnace cover is arranged on the annular boss, a transitional sealing face is arranged between the upper end face of the annular boss and the outer side wall of the annular boss, a mounting structure is arranged at the bottom of the furnace cover, a sealing ring is mounted on the mounting structure, the cross section of the sealing ring is in a V shape, the V-shaped opening of the sealing ring faces the outer side of the sealing ring, the sealing ring comprises two side edges forming a V-shaped structure, and the sealing face and the furnace cover are respectively abutted to the two side edges.

The above prior art solutions have the following drawbacks: although the sealing effect of the V-shaped sealing ring can be enhanced under the vacuum condition, only one sealing ring is arranged, the thickness of the V-shaped sealing ring is thinner, the V-shaped sealing ring is easy to damage, once the sealing ring is damaged, the sealing performance of the sealing ring can be reduced, and therefore the sealing function of the sealing ring is to be improved.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model aims at providing a sealing structure of a vacuum furnace for improving the sealing performance.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a seal structure of vacuum furnace, includes furnace body and fixed connection be in bell on the furnace body, the outside fixedly connected with support piece of furnace body, the bell includes enclosing cover and inner cup, the enclosing cover with the inner cup is protruding form, the inner cup with the enclosing cover orientation is kept away from the direction of furnace body is protruding, the inner cup is close to one side fixedly connected with sealing member of furnace body, the confession has been seted up to the opening periphery of furnace body the seal groove of sealing member embedding, the sealing member is equipped with a plurality ofly, what the seal groove corresponds also is provided with a plurality ofly, the side fixedly connected with of enclosing cover compresses tightly the fastener of bell, the inside parcel of sealing member has the inflation body.

Through adopting above-mentioned technical scheme, support piece increases the stability that the furnace body was placed, the fastener has increased the stability that the bell was fixed at the furnace mouthful department of furnace body, in a plurality of seal grooves of sealing member embedding, make the bell have multiple sealed effect, make the leakproofness of sealing member better, because the operational environment of vacuum furnace is the condition of vacuum high temperature, so the inflation body can be heated the inflation at the during operation, further make the sealing member more closely imbed in the seal groove, thereby further improved the leakproofness of sealing member.

The present invention may be further configured in a preferred embodiment as: the expansion body is arranged in a hollow mode, and liquid expansion materials are arranged in the expansion body.

Through adopting above-mentioned technical scheme, because the vacuum furnace carries out work under the condition of high temperature, so liquid inflation thing thermal expansion for the inflation body inflation is favorable to making the sealing member inseparabler in the seal groove.

The present invention may be further configured in a preferred embodiment as: and a heat-resistant metal wire core is arranged in the sealing element.

Through adopting above-mentioned technical scheme, the stability of sealing member is favorable to increasing by the heat-resisting wire for the sealing member is difficult to warp after being heated, and is difficult to influence its shape by the inflation body.

The present invention may be further configured in a preferred embodiment as: and one side of the inner cover, which is close to the furnace body, is fixedly connected with a reinforcing rib.

Through adopting above-mentioned technical scheme, the strengthening rib is favorable to strengthening the stability of inner cup for the inner cup is difficult to receive the influence of atmospheric pressure and warp.

The present invention may be further configured in a preferred embodiment as: the opening of furnace body is flaring form, and inboard the sealing member orientation the direction of furnace body is protruding, and is a plurality of the sealing member laminating the inner wall of the opening part of furnace body slope.

By adopting the technical scheme, when the furnace cover is closed, the flaring-shaped furnace body is matched with the sealing piece, so that the extrusion feeling of the furnace cover on the furnace body is increased, and the sealing property of the furnace cover is improved.

The present invention may be further configured in a preferred embodiment as: the periphery of the outer cover is fixedly connected with a magnetic part.

Through adopting above-mentioned technical scheme, the magnetic part is favorable to increasing the stability that the enclosing cover was fixed on the furnace body.

The present invention may be further configured in a preferred embodiment as: and one side of the periphery of the outer cover, which is close to the furnace body, is fixedly connected with a dustproof piece.

Through adopting above-mentioned technical scheme, the dustproof makes the dust be difficult to enter into the one side of inner cup to make the sealed effect of sealing member better.

The present invention may be further configured in a preferred embodiment as: the fastener includes fixed arm and swinging boom, when the bell closes, the swinging boom rotates the back, makes the fixed arm lock joint is in on the furnace body.

Through adopting above-mentioned technical scheme, the bell passes through the fastener joint on the furnace body, rotates the swinging boom for the fixed arm lock joint is on the furnace body, thereby compresses tightly the bell on the furnace body.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the sealing elements enable multiple sealing protection measures to be provided between the furnace cover and the furnace body, the sealing performance of the furnace cover is improved, the stability of the furnace cover fixed on the furnace body is improved through the fastening elements, the extruding sense of the sealing elements in the sealing grooves is improved when the sealing elements are embedded into the sealing grooves, the sealing effect of the vacuum furnace is enhanced, the size of the expansion body is increased under the high-temperature condition, the sealing elements are more tightly embedded into the sealing grooves, and the sealing performance of the vacuum furnace is improved;

2. the liquid expansion material expands when heated, so that the volume of the liquid expansion material is increased, the sealing element is more compact in the sealing groove, and the sealing effect of the sealing element is enhanced;

3. the heat-resistant metal wire enables the sealing element not to be easily deformed at high temperature, so that the sealing effect of the sealing element is prevented from being influenced.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view showing the overall structure of the inner lid;

FIG. 3 is a schematic view showing the overall structure of the furnace body;

fig. 4 is a schematic sectional view for showing the internal structure of the seal member.

Reference numerals: 1. a furnace body; 2. a furnace cover; 21. an outer cover; 22. an inner cover; 3. a support member; 4. a seal member; 41. an expansion body; 42. a liquid dilatant; 43. a heat-resistant wire core; 5. a sealing groove; 6. a fastener; 61. a fixed arm; 62. a rotating arm; 7. reinforcing ribs; 8. a dust-proof member; 9. a magnetic member.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a sealing structure of vacuum furnace, including wholly being columniform furnace body 1 and articulating discoid bell 2 on furnace body 1. The hinge is not shown in the figures. The outside welding of furnace body 1 has a plurality of symmetric distribution's support piece 3, and support piece 3 is whole to be the quadrangular form, and support piece 3 is the slope setting, and a plurality of support piece 3 are flaring form.

Referring to fig. 1 and 2, the furnace cover 2 includes an outer cover 21 and an inner cover 22 seamlessly welded to one side of the outer cover 21. The outer cover 21 and the inner cover 22 are convex, and both the inner cover 22 and the outer cover 21 are convex in the direction away from the furnace body 1. A rectangular parallelepiped magnetic member 9 is attached to the outer side of the outer cover 21, and the magnetic member 9 is a magnet. The magnet is located the edge of bell 2 and keeps away from bell 2 and the articulated one side of furnace body 1, does benefit to magnet and increases the fixed stability of enclosing cover 21 on furnace body 1. One side of the periphery of the outer cover 21 close to the furnace body 1 is fixedly connected with a circular dustproof piece 8, and the dustproof piece 8 prevents dust from entering the opening of the furnace cover 2 and the furnace body 1 to affect the sealing performance of the furnace body 1, so that the sealing effect of the furnace body 1 is improved. The outer side of the outer cover 21 and the side wall of the furnace body 1 are provided with fasteners 6, and the fasteners 6 comprise fixed arms 61 and rotating arms 62. When the furnace cover 2 is closed, the fixed arm 61 is buckled on the furnace body 1 after the rotating arm 62 rotates.

Referring to fig. 3, the inner lid 22 is inclined at a peripheral edge thereof on a side close to the furnace body 1, and the inclined inner lid 22 is closed. A plurality of sealing members 4 are bonded to the periphery of the inclined inner lid 22, and the sealing members 4 are annular sealing rings made of a high-temperature resistant material, and the number of the sealing rings is preferably two. An annular sealing groove 5 for placing a sealing element 4 is formed in the periphery of an opening of the furnace body 1, and the section of the sealing groove 5 in the length direction is semicircular. Two sealing grooves 5 are correspondingly arranged, and the opening of the furnace body 1 is in a flaring shape. The opening of the flaring furnace body 1 is attached to the periphery of the closing inner cover 22, so that the sealing effect is better. When the furnace cover 2 is closed, the inclined surface increases the extrusion degree of the sealing ring, so that the furnace cover 2 is more tightly covered on the furnace body 1. The latticed reinforcing ribs 7 are welded on one side, close to the furnace body 1, of the inner cover 22, so that the stability of the inner cover 22 is enhanced, and the inner cover can bear the change of air pressure and is not easy to deform.

Referring to fig. 4, a circular heat-resistant wire core 43 is disposed at the center of the sealing ring, and the heat-resistant wire core 43 can prevent the sealing ring from being heated, bent and deformed, thereby facilitating to maintain the stability of the posture of the sealing ring. The inside of sealing washer has wrapped up globular inflation body 41, and inflation body 41 is the cavity setting, and is equipped with liquid inflation thing 42 in the inflation body 41. Because the working environment of the vacuum furnace is carried out under the condition of vacuum high temperature, the liquid expansion object is heated to expand, so that the volume of the sealing ring is increased, the sealing ring is more tightly extruded in the sealing groove 5, and the sealing effect of the vacuum furnace is improved.

The implementation principle of the embodiment is as follows: a plurality of layers of sealing rings are arranged between the furnace cover 2 and the opening of the furnace body 1, so that the multiple sealing prevention effect is achieved, and the sealing effect of the vacuum furnace is improved. In addition, since the vacuum furnace is operated in a high-temperature vacuum environment, the heat-resistant wire core 43 in the seal ring is advantageous in that the seal ring is not easily deformed. Under the high temperature environment, the volume of the liquid expansion 42 in the expansion body 41 is increased, so that the sealing ring more tightly blocks the sealing groove 5, thereby further improving the sealing effect of the vacuum furnace. When the furnace cover 2 is closed, the magnet is beneficial to increasing the stability of the furnace cover 2 adsorbed on the furnace body 1. In addition, the dust-proof piece 8 also makes dust not easy to enter the sealing groove 5, so that the sealing effect of the vacuum furnace is further enhanced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a seal structure of vacuum furnace, includes furnace body (1) and fixed connection be in bell (2) on furnace body (1), the outside fixedly connected with support piece (3) of furnace body (1), its characterized in that: bell (2) include enclosing cover (21) and inner cup (22), enclosing cover (21) with inner cup (22) are protruding form, inner cup (22) with enclosing cover (21) orientation is kept away from the direction of furnace body (1) is protruding, inner cup (22) are close to one side fixedly connected with sealing member (4) of furnace body (1), the confession has been seted up to the opening periphery of furnace body (1) seal groove (5) of sealing member (4) embedding, sealing member (4) are equipped with a plurality ofly, what seal groove (5) correspond also is provided with a plurality ofly, the side fixedly connected with of enclosing cover (21) compresses tightly fastener (6) of bell (2), the inside parcel of sealing member (4) has inflation body (41).

2. A sealing structure of a vacuum furnace according to claim 1, characterized in that: the expansion body (41) is arranged in a hollow mode, and a liquid expansion object (42) is arranged in the expansion body (41).

3. A sealing structure of a vacuum furnace according to claim 1, characterized in that: a heat-resistant wire core (43) is arranged in the sealing element (4).

4. A sealing structure of a vacuum furnace according to claim 1, characterized in that: and one side of the inner cover (22) close to the furnace body (1) is fixedly connected with a reinforcing rib (7).

5. A sealing structure of a vacuum furnace according to claim 1, characterized in that: the opening of furnace body (1) is flaring form, and inboard sealing member (4) orientation the direction of furnace body (1) is protruding, and is a plurality of sealing member (4) laminating the inner wall of the opening part of furnace body (1) slope.

6. A sealing structure of a vacuum furnace according to claim 1, characterized in that: the periphery of the outer cover (21) is fixedly connected with a magnetic part (9).

7. A sealing structure of a vacuum furnace according to claim 1, characterized in that: and one side of the periphery of the outer cover (21), which is close to the furnace body (1), is fixedly connected with a dustproof piece (8).

8. A sealing structure of a vacuum furnace according to claim 1, characterized in that: fastener (6) include fixed arm (61) and swinging boom (62), when bell (2) closed, swinging boom (62) rotate the back, make fixed arm (61) lock joint is in on furnace body (1).