CN219347329U

CN219347329U - Door sealing device for high-temperature vacuum sintering furnace

Info

Publication number: CN219347329U
Application number: CN202320132277.4U
Authority: CN
Inventors: 姜岩; 张亚; 张小元; 陈永强
Original assignee: Shengliheng Ningxia Vacuum Technology Co ltd
Current assignee: Shengliheng Ningxia Vacuum Technology Co ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-07-14
Anticipated expiration: 2033-01-17

Abstract

The utility model provides a high temperature vacuum sintering is door sealing device for stove, includes sealed cowling, elevating system, a plurality of connecting rods, insulated gate, guide support, the sealed cowling is located between two sections furnace bodies, elevating system's upper end and sealed cowling's upper end fixed connection, and elevating system's lower extreme is articulated with the one end of connecting rod, and the other end and the insulated gate of connecting rod are articulated, and guide support is located the below of insulated gate, guide support and furnace body fixed connection, guide support has slope downward, and the insulated gate can slide along guide support. The heat insulating door of the present utility model can be moved in a horizontal direction in addition to up and down movement. After the horizontal movement, the heat insulation door can be clung to the furnace door, so that the sealing performance of the furnace door is improved.

Description

Door sealing device for high-temperature vacuum sintering furnace

Technical Field

The utility model relates to the technical field of high-temperature sintering furnaces, in particular to a door sealing device for a high-temperature vacuum sintering furnace.

Background

The metal is kept from contacting air as much as possible during the high temperature heat treatment, which may involve multiple temperature changes. If the heat treatment is carried out in only one furnace body, the treatment time is increased in the temperature change process, and a large amount of energy is consumed by repeated temperature rise. In order to avoid the problems, two to three sections of furnace bodies can be arranged in the vacuum sintering furnace. Each furnace body has independent temperature environment. The temperature environments in two adjacent sections of furnace bodies are different, and the two sections of furnace bodies are required to be separated by a heat insulation door. For example, the patent number 201720459537.3 discloses the following technical scheme of a Chinese patent with the name of a double furnace door sealing structure of a vacuum furnace for heat treatment: the vacuum furnace for heat treatment comprises a front chamber and a rear chamber, wherein a heating chamber is arranged in the rear chamber, the heating chamber is provided with an opening facing the front chamber, and the sealing structure comprises: the middle door sealing structure comprises a middle door, the middle door is arranged between the front chamber and the rear chamber, a middle door rubber sealing strip is arranged at the edge of the middle door, and the upper end of the middle door is connected with a middle door lifting device; the heat insulation door sealing structure comprises a heat insulation door, wherein the heat insulation door is arranged in the rear chamber and positioned at the opening of the heating chamber, the surface of the heat insulation door facing the heating chamber is covered with a heat insulation layer, and the upper end of the heat insulation door is connected with a heat insulation door lifting device; a predetermined installation space is reserved between the heat insulation door and the middle door.

The well door seal structure of this scheme is the structure of straight following, can exist the gap between insulated door and the two sections furnace bodies, leads to the leakproofness to descend to influence the sealed thermal-insulated performance of insulated door.

Disclosure of Invention

In view of the above, it is necessary to provide a door sealing device for a high-temperature vacuum sintering furnace having good sealing properties.

The utility model provides a high temperature vacuum sintering is door sealing device for stove, includes sealed cowling, elevating system, a plurality of connecting rods, insulated gate, guide support, the sealed cowling is located between two sections furnace bodies, elevating system's upper end and sealed cowling's upper end fixed connection, and elevating system's lower extreme is articulated with the one end of connecting rod, and the other end and the insulated gate of connecting rod are articulated, and guide support is located the below of insulated gate, guide support and furnace body fixed connection, guide support has slope downward, and the insulated gate can slide along guide support.

Preferably, the lifting mechanism comprises a hydraulic cylinder and a lifting support, wherein a cylinder body of the hydraulic cylinder is fixedly connected with the sealing cover, a telescopic rod of the hydraulic cylinder is downwards arranged, the end part of the hydraulic rod is hinged with the upper end of the lifting support, the lifting support is also hinged with the connecting rod, clamping grooves are further formed in two sides of the sealing cover, and the lifting support can move up and down in the clamping grooves.

Preferably, the connecting rod is a loop bar.

Preferably, the bottom of the heat insulation door is provided with two pulleys, and correspondingly, the guide bracket is provided with two guide grooves, and the pulleys are connected with the guide grooves in a clamping way.

Preferably, the heat insulation door comprises a sealing plate, a plurality of layers of graphite felts and bolts, wherein a plurality of rows of bolt holes are formed in the sealing plate, the bolts penetrate through the graphite felts and are fixed in the bolt holes of the sealing plate, the length and width of the sealing plate are larger than the length and width of the furnace door, so that the sealing plate can be plugged on the furnace door, and the length and width of the graphite felts are smaller than the length and width of the furnace door, so that the graphite felts can be embedded in the furnace door.

The beneficial effects are that: the sealing structure of the prior art can only move up and down, so that a gap exists between the heat insulation door and the furnace door, and the sealing effect is poor. When the door sealing device for the high-temperature vacuum sintering furnace works, when the furnace door is required to be sealed, the lifting mechanism drives the connecting rod, so that the heat insulation door is driven to move downwards, when the heat insulation door reaches the guide bracket, the lifting mechanism moves downwards mechanically, and the heat insulation door moves in the horizontal direction along the guide bracket under the action of gravity and is finally blocked on the furnace door. Therefore, the heat insulation door of the present utility model can be moved in a horizontal direction in addition to up and down movement. After the horizontal movement, the heat insulation door can be clung to the furnace door, so that the sealing performance of the furnace door is improved.

Drawings

Fig. 1 is a schematic structural view of a door closing device for a high-temperature vacuum sintering furnace according to the present utility model.

FIG. 2 is a cross-sectional view of a preferred angle of the door closing device for the high temperature vacuum sintering furnace according to the present utility model.

Fig. 3 and 4 are partial enlarged views of fig. 2.

FIG. 5 is a cross-sectional view of a preferred angle of the door closing device for the high temperature vacuum sintering furnace according to the present utility model.

In the figure: the door sealing device 10 for the high-temperature vacuum sintering furnace, the sealing cover 20, the clamping groove 201, the lifting mechanism 30, the hydraulic cylinder 301, the lifting bracket 302, the connecting rod 40, the heat insulation door 50, the pulley 501, the sealing plate 502, the multi-layer graphite felt 503, the bolt 504, the guide bracket 60, the guide groove 601 and the furnace body 70.

Description of the embodiments

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Referring to fig. 1 to 5, a door sealing device 10 for a high temperature vacuum sintering furnace includes a sealing cover 20, a lifting mechanism 30, a plurality of connecting rods 40, a heat insulation door 50, and a guiding bracket 60, wherein the sealing cover 20 is located between two sections of furnace bodies 70, the upper end of the lifting mechanism 30 is fixedly connected with the upper end of the sealing cover 20, the lower end of the lifting mechanism 30 is hinged with one end of the connecting rod 40, the other end of the connecting rod 40 is hinged with the heat insulation door 50, the guiding bracket 60 is located below the heat insulation door 50, the guiding bracket 60 is fixedly connected with the furnace bodies 70, the guiding bracket 60 has a slope surface inclined downwards, and the heat insulation door 50 can slide along the guiding bracket 60.

The connecting bar 40 serves to connect the lifting mechanism 30 and the insulated door 50. The heat insulation door 50 needs to be horizontally moved in addition to up and down to block the door. The connecting rod 40 can drive the heat insulation door 50 to move downwards when the lifting mechanism 30 moves downwards. Meanwhile, when the heat insulation door 50 descends to the guide bracket 60, the heat insulation door moves horizontally under the action of gravity and can cling to the furnace door under the action of gravity, so that the sealing performance of the plugging is ensured. On the contrary, when the lifting mechanism 30 moves upwards, the connecting rod 40 firstly generates traction force to the heat insulation door 50 along the direction of the guide bracket 60, and when the heat insulation door 50 leaves the furnace door and is separated from the guide bracket 60, the connecting rod 40 moves vertically upwards.

In a preferred embodiment, the number of the guide brackets 60 is two, and the two guide brackets 60 are symmetrically distributed on two sides of the bottom of the oven door. The two guide brackets 60 are identical in height, and the heat insulation door 50 can be horizontally caught to the guide brackets 60.

In a preferred embodiment, the number of connecting rods 40 is four. Because the insulated door 50 is heavy. The stability of connection is favorable to the connecting rod 40 of a large number, avoids the connecting rod 40 fracture scheduling problem that long-time work led to.

Further, the lifting mechanism 30 includes a hydraulic cylinder 301 and a lifting bracket 302, the cylinder body of the hydraulic cylinder 301 is fixedly connected with the sealing cover 20, the telescopic rod of the hydraulic cylinder 301 is downward arranged, the end of the hydraulic rod is hinged to the upper end of the lifting bracket 302, the lifting bracket 302 is also hinged to the connecting rod 40, clamping grooves 201 are further formed in two sides of the sealing cover 20, and the lifting bracket 302 can move up and down in the clamping grooves 201.

Further, the connecting rod 40 is a loop bar. The form of the loop bar facilitates the shrinkage of the connecting bar 40, and after the insulated door 50 seals the oven door, if the lifting frame 302 is still continuing to descend, the connecting bar 40 will avoid a strong force between the lifting frame 302 and the insulated door 50 by the shrinkage, thereby squeezing the loop bar.

Further, two pulleys 501 are provided at the bottom of the heat insulation door 50, two guide grooves 601 are provided on the guide bracket 60 correspondingly, and the pulleys 501 are engaged with the guide grooves 601. The pulley 501 moves in the guide groove 601, and thus, the heat insulation door 50 moves on the guide bracket 60 relatively stably.

Further, the heat insulation door 50 includes a sealing plate 502, a plurality of layers of graphite felts 503, and bolts 504, wherein a plurality of rows of bolt 504 holes are formed in the sealing plate 502, the bolts 504 penetrate through the graphite felts 503 and are fixed in the bolt 504 holes of the sealing plate 502, the length and width of the sealing plate 502 are larger than the length and width of the oven door, so that the sealing plate 502 can be plugged on the oven door, and the length and width of the graphite felts 503 are smaller than the length and width of the oven door, so that the graphite felts 503 can be embedded in the oven door.

The sealing plate 502 mainly plays a role of sealing. The length and width of the sealing plate 502 is greater than the length and width of the oven door, which means that the sides of the sealing plate 502 can remain in engagement with the sides of the oven door. The graphite felt 503 is fixed on the sealing plate 502, and can play a good role in heat insulation.

In a preferred embodiment, a mounting plate for conveniently mounting the graphite felt 503 is arranged on one side of the sealing plate 502 close to the graphite felt 503, and a bolt 504 hole is arranged on the mounting plate. Graphite felt 503 is secured to the mounting plate.

The foregoing disclosure is illustrative of the preferred embodiments of the present utility model, and is not to be construed as limiting the scope of the utility model, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a high temperature vacuum sintering is door closing device for stove which characterized in that: including sealed cowling, elevating system, a plurality of connecting rods, insulated door, guide bracket, the sealed cowling is located between two sections furnace bodies, elevating system's upper end and sealed cowling's upper end fixed connection, elevating system's lower extreme is articulated with the one end of connecting rod, and the other end of connecting rod is articulated with the insulated door, and guide bracket is located the below of insulated door, guide bracket and furnace body fixed connection, guide bracket has slope downward, and the insulated door can slide along guide bracket.

2. The door sealing device for a high-temperature vacuum sintering furnace according to claim 1, wherein: the lifting mechanism comprises a hydraulic cylinder and a lifting support, wherein a cylinder body of the hydraulic cylinder is fixedly connected with the sealing cover, a telescopic rod of the hydraulic cylinder is downwards arranged, the end part of the hydraulic rod is hinged with the upper end of the lifting support, the lifting support is also hinged with the connecting rod, clamping grooves are further formed in two sides of the sealing cover, and the lifting support can move up and down in the clamping grooves.

3. The door sealing device for a high-temperature vacuum sintering furnace according to claim 1, wherein: the connecting rod is a loop bar.

4. The door sealing device for a high-temperature vacuum sintering furnace according to claim 1, wherein: the bottom of the heat insulation door is provided with two pulleys, correspondingly, the guide bracket is provided with two guide grooves, and the pulleys are connected with the guide grooves in a clamping way.

5. The door sealing device for a high-temperature vacuum sintering furnace according to claim 1, wherein: the heat insulation door comprises a sealing plate, a plurality of layers of graphite felts and bolts, wherein a plurality of rows of bolt holes are formed in the sealing plate, the bolts penetrate through the graphite felts and are fixed in the bolt holes of the sealing plate, the length and width of the sealing plate are larger than the length and width of the furnace door, so that the sealing plate can be plugged on the furnace door, and the length and width of the graphite felts are smaller than the length and width of the furnace door, so that the graphite felts can be embedded in the furnace door.