CN210862167U - Sealing device for vacuum furnace - Google Patents

Abstract

The utility model discloses a vacuum furnace is with sealing device, including stove outer covering, advancing electrode and clamping device, stove outer covering electrode hole runs through there is advancing electrode, and the square groove has all been seted up to both sides about the stove outer covering electrode hole, clamping device is installed to the square groove, clamping device's the outside is equipped with thermal-insulated cover, clamping device includes two sliders and positive and negative tooth screw rods, two the square groove all slides and is equipped with the slider. This sealing device for vacuum furnace, through the cooperation of two sliders and positive and negative tooth screw rods, a screwing up ring when having solved the installation, advance the electrode and will go outward, and it is rotatory to be accompanied a little, thereby it is rotatory to drive graphite transition electrode in the stove, hardly keep its and the stove outer covering between the position relatively fixed, advance graphite transition electrode and the graphite heat-generating body that the electrode displacement is too big very easily damages the stove in, advance the electrode, the clearance is very little between insulating cover and the stove outer covering electrode hole, there is not the problem of the margin of adjustment, the comparatively difficult problem of installation is got up.

Description

Sealing device for vacuum furnace

Technical Field

The utility model relates to a vacuum furnace technical field specifically is a sealing device for vacuum furnace.

Background

The prior vacuum furnace electrode sealing device is characterized in that two polytetrafluoroethylene insulating sleeves are arranged between an electrode and a furnace shell electrode hole, an O-shaped rubber ring for sealing is placed between the two insulating sleeves, the position between the electrode and the furnace shell is kept relatively fixed during installation, a circular ring outside a copper electrode is gradually screwed, and the O-shaped rubber sealing ring expands under the extrusion of the two insulating sleeves to finally form complete sealing between the electrode and the electrode hole. The prior vacuum furnace electrode inlet sealing structure is simple, but the electrode inlet can be moved outwards with little rotation when the circular ring is screwed down during installation, so that the graphite transition electrode in the furnace is driven to rotate, the position between the graphite transition electrode and the furnace shell is difficult to keep relatively fixed, the graphite transition electrode and a graphite heating body in the furnace are easy to damage when the electrode inlet is excessively displaced, the gaps among the electrode inlet, the insulating sleeve and the electrode hole of the furnace shell are small, no adjustment room is provided, and the installation is difficult.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealing device for vacuum furnace to a screw up the ring when solving the installation, advance the electrode and will go outward, and it is a little rotatory to be accompanied, thereby it is rotatory to drive graphite transition electrode in the stove, hardly keep its and the stove outer covering between the position relatively fixed, advance graphite transition electrode and the graphite heat-generating body that electrode displacement is too big very easily to damage the stove in, it is very little to advance the electrode, the clearance between insulating cover and the stove outer covering electrode hole, there is not the leeway of adjustment, the comparatively difficult problem of installation gets up.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing device for a vacuum furnace comprises a furnace shell, an electrode and a clamping device, wherein the electrode penetrates through an electrode hole of the furnace shell, square grooves are formed in the upper side and the lower side of the electrode hole of the furnace shell, the clamping device is installed in each square groove, and a heat insulation cover is arranged on the outer side of each clamping device;

clamping device includes two sliders and positive and negative tooth screw rods, two the square groove all slides and is equipped with the slider, and two slider symmetry spiro unions are on positive and negative tooth of positive and negative tooth screw rods, one side of positive and negative tooth screw rods is equipped with the ring base, and fixed mounting has the ring on the ring base, the ring internal rotation is equipped with the double-screw bolt, and the double-screw bolt passes through coupling assembling at the tip of positive and negative tooth screw rod, coupling assembling includes drive bevel gear and driven bevel gear, drive bevel gear center fixed mounting is at the left end of double-screw bolt, driven bevel gear center fixed mounting is in the bottom of positive and negative tooth screw rods, and drive bevel gear and driven bevel gear meshing are connected.

Preferably, the heat shield comprises a heat shield shell, one end of the heat shield shell is hinged to the furnace shell, a magnet is fixedly mounted at the other end of the heat shield shell, an iron block is connected to the magnet in an adsorption mode, and the iron block is fixedly mounted on the furnace shell.

Preferably, two fixed mounting has the slide rail on the square groove, and the slide rail inboard is equipped with the abrasionproof pad, slider and slide rail sliding assembly, and slider and abrasionproof pad closely laminate.

Preferably, a handle is fixedly mounted on one side, away from the driving bevel gear, of the stud, and anti-skid grains are arranged on the outer side of the handle.

Preferably, the inner sides of the two sliding blocks are provided with rubber pads.

Compared with the prior art, the beneficial effects of the utility model are that: this sealing device for vacuum furnace, cooperation through two sliders and positive and negative tooth screw rods, rotatory positive and negative tooth screw rod drives two sliders and slides along the slide rail inboard or the outside, two sliders can press from both sides the feed electrode tightly and loosen like this, conveniently advance the installation and the dismantlement of electrode, a screwing up the ring when having solved the installation, advance the electrode and will outwards go, and be accompanied by a little rotation, thereby it is rotatory to drive graphite transition electrode in the stove, hardly keep its and the stove outer position relatively fixed between the stove outer, advance graphite transition electrode and the graphite heat-generating body in the big very easily damaged stove of electrode displacement, advance the electrode, the clearance is very little between insulating cover and the stove outer electrode hole, the leeway of adjustment does not have, comparatively difficult problem is got up in the installation, user's user demand has been satisfied.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional view of detail a of the present invention.

In the figure: 1. a furnace shell; 2. an inlet electrode; 3. a square groove; 4. a clamping device; 401. a slider; 402. a positive and negative thread screw; 403. a ring base; 404. a circular ring; 405. a stud; 406. a drive bevel gear; 407. a driven bevel gear; 408. a handle; 409. anti-skid lines; 5. a heat shield; 501. a heat shield housing; 502. an iron block; 503. a magnet; 6. a slide rail; 7. an anti-wear pad; 8. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a sealing device for vacuum furnace, includes stove outer covering 1, advances electrode 2 and clamping device 4, and stove outer covering 1 electrode hole runs through has into electrode 2, and square groove 3 has all been seted up to both sides about stove outer covering 1 electrode hole, and clamping device 4 is installed to square groove 3, and clamping device 4's the outside is equipped with thermal-insulated cover 5.

In this embodiment, the electrode hole of the furnace shell 1 and the electrode feeding 2 are in clearance fit, so that the electrode feeding 2 is convenient to install.

Clamping device 4 includes two sliders 401 and positive and negative tooth screw rod 402, and two square grooves 3 all slide and be equipped with slider 401, and two slider 401 symmetry spiro union on positive and negative tooth of positive and negative tooth screw rod 402, and one side of positive and negative tooth screw rod 402 is equipped with ring base 403, and fixed mounting has ring 404 on the ring base 403, and the ring 404 internal rotation is equipped with double-screw bolt 405, and double-screw bolt 405 passes through the tip of coupling assembling at positive and negative tooth screw rod 402.

The connecting assembly comprises a driving bevel gear 406 and a driven bevel gear 407, the center of the driving bevel gear 406 is fixedly installed at the left end of the stud 405, the center of the driven bevel gear 407 is fixedly installed at the bottom end of the positive and negative thread screw 402, and the driving bevel gear 406 is in meshing connection with the driven bevel gear 407.

In this embodiment, the threads on the positive and negative screws 402 are composed of two threads with opposite rotation directions; the circular ring base 403 is fixedly installed with the outside; the ring 404 and the screw 405 are assembled by a sliding bearing.

The heat shield 5 comprises a heat shield shell 501, one end of the heat shield shell 501 is hinged on the furnace shell 1, a magnet 503 is fixedly mounted at the other end of the heat shield shell 501, an iron block 502 is connected to the magnet 503 in an adsorption mode, and the iron block 502 is fixedly mounted on the furnace shell 1.

In this embodiment, the iron blocks 502 and the magnets 503 can be attracted to tightly fix the heat shield shell 501 on the furnace casing 1, so as to prevent the external heat from burning the holding device 4.

The two square grooves 3 are fixedly provided with slide rails 6, the inner sides of the slide rails 6 are provided with anti-abrasion pads 7, the slide blocks 401 are assembled with the slide rails 6 in a sliding mode, and the slide blocks 401 are tightly attached to the anti-abrasion pads 7.

In this embodiment, the slide rail 401 can make things convenient for the slider 401 to slide along the straight line, and the abrasionproof pad 7 plays the guard action to slider 401, avoids slider 401 wearing and tearing to destroy.

In this embodiment, the stud 405 may drive the driving bevel gear 406 to rotate while rotating, and then the driven bevel gear 407 may drive the positive and negative teeth screw 402 to rotate, thereby saving a large amount of driving space.

A handle 408 is fixedly arranged on one side of the stud 405 far away from the drive bevel gear 406, and anti-skid threads 409 are arranged on the outer side of the handle 408.

In this embodiment, the handle 408 can facilitate the manual control of the rotation of the positive and negative threaded rods 402, and the anti-slip threads 409 can prevent the hand from slipping when the handle 408 is rotated.

The inner sides of the two sliding blocks 401 are both provided with rubber pads 8.

In this embodiment, the rubber pad 8 can prevent the electrode 2 from being damaged by extrusion.

The working principle is as follows: when the vacuum furnace works, the electrode 2 is inserted into the electrode hole of the furnace shell 1, the rotating handle 408 drives the stud 405 to rotate, the driving bevel gear 406 drives the driven bevel gear 407 and the positive and negative tooth screw 402 to rotate, at the moment, the two sliding blocks 401 slide in the sliding rail 6 in opposite directions, so that the electrode 2 can be tightly fixed in the electrode hole of the furnace shell 1, the two sliding blocks 401 can be conveniently kept away from the electrode 2 by rotating the handle 408 in opposite directions, and the electrode 2 can be conveniently disassembled.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A sealing device for a vacuum furnace is characterized in that: the furnace comprises a furnace shell (1), an electrode (2) and a clamping device (4), wherein the electrode (2) penetrates through an electrode hole of the furnace shell (1), square grooves (3) are formed in the upper side and the lower side of the electrode hole of the furnace shell (1), the clamping device (4) is installed in each square groove (3), and a heat insulation cover (5) is arranged on the outer side of each clamping device (4);

the clamping device (4) comprises two sliding blocks (401) and a positive and negative screw rod (402), the two square grooves (3) are both assembled with the sliding blocks (401) in a sliding way, two sliding blocks (401) are symmetrically screwed on the positive and negative teeth of the positive and negative teeth screw rod (402), a circular ring base (403) is arranged on one side of the positive and negative teeth screw rod (402), and a circular ring (404) is fixedly arranged on the circular ring base (403), the circular ring (404) is rotatably provided with a stud (405), and the stud (405) is assembled at the end part of the positive and negative thread screw (402) through a connecting component, the connecting assembly comprises a driving bevel gear (406) and a driven bevel gear (407), the center of the drive bevel gear (406) is fixedly arranged at the left end of the stud (405), the center of the driven bevel gear (407) is fixedly arranged at the bottom end of the positive and negative thread screw (402), and the driving bevel gear (406) is meshed and connected with the driven bevel gear (407).

2. The sealing device for a vacuum furnace according to claim 1, wherein: separate heat exchanger (5) including separating heat exchanger shell (501), the one end that separates heat exchanger shell (501) articulates on stove outer covering (1), and separates the other end fixed mounting of heat exchanger shell (501) and have magnet (503), the absorption is connected with iron plate (502) on magnet (503), and iron plate (502) fixed mounting is on stove outer covering (1).

3. The sealing device for a vacuum furnace according to claim 1, wherein: two fixed mounting has slide rail (6) on square groove (3), and slide rail (6) inboard is equipped with abrasionproof pad (7), slider (401) and slide rail (6) sliding assembly, and slider (401) and abrasionproof pad (7) closely laminate.

4. The sealing device for a vacuum furnace according to claim 1, wherein: and a handle (408) is fixedly mounted on one side of the stud (405) far away from the drive bevel gear (406), and anti-skid threads (409) are arranged on the outer side of the handle (408).

5. The sealing device for a vacuum furnace according to claim 1, wherein: the inner sides of the two sliding blocks (401) are provided with rubber pads (8).

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