Oriented opening and closing device for furnace cover of vacuum furnace

Abstract

The utility model discloses a directional opening and closing device for a furnace cover of a vacuum furnace, which belongs to the field of vacuum furnaces and comprises a furnace cover and a vacuum furnace, high-temperature-resistant sealing washers are arranged at furnace mouths of the furnace cover and the vacuum furnace, and an opening and closing device is arranged on the outer side of the furnace cover. Compared with the prior art, the device has the advantages that the opening and closing of the furnace cover are controlled through the push-pull opening and closing device of the reciprocating air cylinder, when the furnace cover is opened and closed, the telescopic rod of the reciprocating air cylinder retracts or stretches out, and the long column end of the L-shaped connecting column of the opening and closing device is pulled by the inclined push rod. Lever motion is carried out with a pin structure connecting the long column end of the L-shaped connecting column and the side wall of the vacuum furnace as a fulcrum, when the furnace cover is closed, the T-shaped anti-collision cushion block at the top end of the telescopic rod tightly abuts against the long column end of the L-shaped connecting column, and due to the fact that the short column end of the L-shaped connecting column is located in the center of the furnace cover, thrust of the L-shaped connecting column is evenly stressed on the furnace cover. And no air hole is formed in the connection of the furnace cover and the vacuum furnace.

Description

TECHNICAL FIELD

[0001] The utility model relates to the vacuum furnace field, specifically is a kind of vacuum furnace furnace cover directional opening and closing device. BACKGROUND

[0002] Vacuum furnace is a kind of equipment under high temperature and low pressure conditions heating treatment, it has no oxygen, dry, no pollution, controllability is strong etc. Characteristic, therefore it is widely used in material, electronic and chemical industry etc. Because it has vacuum characteristic, so for the directional opening and closing device of furnace cover and vacuum furnace requirement is extremely high.

[0003] The directional opening and closing device of existing vacuum furnace furnace cover is usually using pin structure to connect furnace cover and vacuum furnace, such as: coolster vacuum furnace, it is sealed between furnace cover and vacuum furnace by high-temperature-resistant sealing washer, it is fixed using screw or buckle, then start vacuumizing equipment, carries out vacuumizing operation.

[0004] Now although it can be sealed vacuumizing operation, but step is complicated, needs to be gradually tightened multiple screws, in the process of screwing, control the pressure of each angle of furnace cover, to avoid uneven stress of furnace cover when screwing, if individual screw is damaged, it is easy to cause the phenomenon of furnace cover gas leakage, thereby reducing the efficiency of vacuumizing. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is that the existing directional opening and closing device of furnace cover will appear uneven stress when closing, thereby causing the phenomenon of furnace cover gas leakage.

[0006] To solve the above technical problem, the technical scheme provided by the utility model is as follows: a kind of vacuum furnace furnace cover directional opening and closing device, including furnace cover and vacuum furnace, the furnace mouth of the furnace cover and vacuum furnace is equipped with high-temperature-resistant sealing washer, the outside of the furnace cover is equipped with opening and closing device, one side of the vacuum furnace furnace body is equipped with reciprocating cylinder that pushes furnace cover opening and closing movement, the reciprocating cylinder is connected with opening and closing device by two inclined push rods.

[0007] As improvement, the opening and closing device includes L-shaped connecting column located on the outer wall of furnace cover, the short column end of the L-shaped connecting column is located at the center of the outer wall of furnace cover, the short column end of the L-shaped connecting column is connected with the outer wall of furnace cover by two semicircle stepped connecting discs, the short column end of the L-shaped connecting column passes through the semicircle stepped connecting disc, the thick column end of the semicircle stepped connecting disc is connected with the furnace cover by bolt structure.

[0008] As improvement, the short column top end of the L-shaped connecting column is equipped with fixed disc, the inside of the semicircle stepped connecting disc is equipped with fixed disc storage groove that stores fixed disc.

[0009] As improvement, the long column end of the L-shaped connecting column is provided with a control bevel push rod control groove for controlling the bevel angle of the bevel push rod, the top end of the telescopic rod of the reciprocating cylinder is provided with a plane column corresponding to the bevel push rod, the two ends of the bevel push rod are respectively located on the inner walls of the control groove and the outer walls of the plane column, and the control groove and the plane column are connected with the bevel push rod through a pin.

[0010] As improvement, the top end of the plane column is provided with a T-shaped impact pad, the thin column end of the T-shaped impact pad penetrates through the plane column, the impact position of the T-shaped impact pad is located inside the control groove of the long column end of the L-shaped connecting column, the long column end of the L-shaped connecting column is connected with the side wall of the vacuum furnace through a pin structure, and the pin structure connecting the vacuum furnace and the long column end of the L-shaped connecting column is located inside the T-shaped impact pad.

[0011] As improvement, the side wall of the vacuum furnace is provided with a cylinder base for fixing the reciprocating cylinder, and the reciprocating cylinder is connected with the cylinder base through a bolt structure.

[0012] Compared with the prior art, the device has the advantages that: the opening and closing of the furnace cover is controlled by the push-pull opening and closing device of the reciprocating cylinder, when the furnace cover is opened and closed, the telescopic rod of the reciprocating cylinder is retracted or extended, the long column end of the L-shaped connecting column of the opening and closing device is pulled by the bevel push rod, and lever movement is performed with the pin structure connecting the long column end of the L-shaped connecting column and the side wall of the vacuum furnace as a fulcrum, and when the furnace cover is closed, the T-shaped impact pad at the top end of the telescopic rod tightly abuts against the long column end of the L-shaped connecting column, and because the short column end of the L-shaped connecting column is located at the center of the furnace cover, the thrust of the L-shaped connecting column is uniformly applied on the furnace cover, so that the connection between the furnace cover and the vacuum furnace will not have air holes. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a total structure diagram of the furnace cover closing of the directional opening and closing device of the vacuum furnace cover.

[0014] Figure 2 is a total structure diagram of the furnace cover opening of the directional opening and closing device of the vacuum furnace cover.

[0015] Figure 3 is an explosion view of the total structure of the directional opening and closing device of the vacuum furnace cover.

[0016] Figure 4 is a half circle stepped connecting disc sectional view of the directional opening and closing device of the vacuum furnace cover.

[0017] Figure 5 is a structure diagram of the half circle stepped connecting disc of the directional opening and closing device of the vacuum furnace cover.

[0018] Figure 6 is a structure diagram of the L-shaped connecting column of the directional opening and closing device of the vacuum furnace cover.

[0019] As shown: 1, furnace cover; 2, vacuum furnace; 3, high temperature sealing gasket; 4, opening and closing device; 41, L-shaped connecting column; 42, semicircle stepped connecting disc; 421, fixed disc; 422, fixed disc storage groove; 5, reciprocating cylinder; 51, cylinder base; 6, inclined push rod; 61, inclined push rod control groove; 62, flat column; 63, T-shaped collision pad block. DETAILED DESCRIPTION

[0020] The utility model will be made further detailed description in combination with the drawings.

[0021] As shown in the description Figure 1 , 2 , 3, including furnace cover 1 and vacuum furnace 2, the furnace mouth of furnace cover 1 and vacuum furnace 2 is equipped with high temperature sealing gasket 3, it is characterized in that: the outside of furnace cover 1 is equipped with opening and closing device 4, one side of vacuum furnace 2 furnace body is equipped with reciprocating cylinder 5 that pushes furnace cover 1 and opens and closes movement, reciprocating cylinder 5 is connected with opening and closing device 4 through two inclined push rods 6, opening and closing device 4 includes the L-shaped connecting column 41 in the outer wall of furnace cover 1, the long column end of L-shaped connecting column 41 is connected with the side wall of vacuum furnace 2 through pin structure, the side wall of vacuum furnace 2 is equipped with the cylinder base 51 of fixed reciprocating cylinder 5, reciprocating cylinder 5 is connected with cylinder base 51 through bolt structure, when the reciprocating motion of reciprocating cylinder 5 telescopic rod, the inclined push rod 6 of connecting reciprocating cylinder 5 telescopic rod and L-shaped connecting column 41 moves along with, makes L-shaped connecting column 41 with pin structure as the origin lever motion.

[0022] As shown in the description Figure 3 , 4, 5, 6, the short column end of the L-shaped connecting column 41 is located at the center of the outer wall of the furnace cover 1, the short column end of the L-shaped connecting column 41 is connected with the outer wall of the furnace cover 1 through two semicircle stepped connecting discs 42, the short column end of the L-shaped connecting column 41 passes through the semicircle stepped connecting disc 42, the thick column end of the semicircle stepped connecting disc 42 is connected with the furnace cover 1 through bolt structure, the short column top end of the L-shaped connecting column 41 is provided with a fixing disc 421, the inside of the semicircle stepped connecting disc 42 is provided with a fixing disc storage groove 422 for storing the fixing disc 421, the long column top end of the L-shaped connecting column 41 is provided with a control slope push rod control groove 61 for controlling the inclination angle of the slope push rod 6, the top end of the telescopic rod of the reciprocating cylinder 5 is provided with a plane column 62 corresponding to the slope push rod 6, the two ends of the slope push rod 6 are located on the inner wall of the control groove 61 and the outer wall of the plane column 62 respectively, the control groove 61 and the plane column 62 are connected with the slope push rod 6 through a pin, the top end of the plane column 62 is provided with a T-shaped impact pad 63, the thin column end of the T-shaped impact pad 63 passes through the plane column 62, the impact position of the T-shaped impact pad 63 is located in the control groove 61 of the long column end of the L-shaped connecting column 41, the pin structure connecting the vacuum furnace 2 and the long column end of the L-shaped connecting column 41 is located in the inside of the T-shaped impact pad 63, the fixing disc 421 is fixed in the fixing disc storage groove 422 through the semicircle stepped connecting disc 42, so that the furnace cover 1 can freely rotate on the outer rod of the L-shaped connecting column 41, and the furnace cover 1 can be better sealed.

[0023] In the specific implementation, the high-temperature-resistant sealing gasket 3 is sleeved on the inner wall of the furnace cover 1, the furnace cover 1 with the sleeved high-temperature-resistant sealing gasket 3 is placed in the furnace opening of the vacuum furnace 2, the semicircle stepped connecting disc 42 is sleeved around the fixing disc 421 of the short column end of the L-shaped connecting column 41, the fixing disc in the fixing disc storage groove 422 in the semicircle stepped connecting disc 42 is aligned with the screw hole on the semicircle stepped connecting disc 42 and the furnace cover 1, and the fixing disc is fixed by using the screw, the screw hole of the cylinder base 51 is aligned with the screw hole of the reciprocating cylinder 5 base, the screw is screwed in for fixation, the thin column end of the T-shaped impact pad 63 is inserted into the pin hole at the top end of the telescopic rod of the reciprocating cylinder 5, the pin support of the long column end of the L-shaped connecting column 41 is aligned with the pin support of the side wall of the vacuum furnace 2, and the pin is inserted for fixation, the pin hole of one end of the two slope push rods 6 is aligned with the pin hole in the control groove 61, the pin is inserted for fixation, the other end of the slope push rod 6 is aligned with the pin hole on the two sides of the plane column 62, and the pin is inserted for fixation.

[0024] In use, the product is placed in the vacuum furnace 2, the retractable rod of the shuttle cylinder 5 is popped out by the switch, the L-shaped connecting column 41 is rotated around the pin structure between the L-shaped connecting column 41 and the vacuum furnace 2 under the pushing of the inclined push rod 6, so that the other side furnace cover 1 is closed on the furnace opening of the vacuum furnace 2, when the furnace cover is closed, the T-shaped collision pad 63 at the top end of the retractable rod of the shuttle cylinder 5 is pressed on the long column end plate surface of the L-shaped connecting column 41, so that when the furnace cover 1 is closed, the furnace cover 1 is always pressed on the furnace opening of the vacuum furnace 2 by the fixing disc 421 of the L-shaped connecting column 41, and the fixing disc 421 is located at the center of the outer wall of the furnace cover 1, so that the pressure of the fixing disc 421 on the furnace cover 1 is evenly distributed on the furnace cover 1, so that air holes are avoided in the closing process of the furnace cover 1, then the vacuum switch is opened for vacuumizing processing. After the processing is completed, the vacuum furnace 2 is depressurized by opening the pressure relief valve, after the depressurization is completed, the retractable rod of the shuttle cylinder 5 is retracted, the long column end of the L-shaped connecting column 41 is pulled by the inclined push rod 6, so that the furnace cover 1 at the short column end of the L-shaped connecting column 41 is rotated around the pin structure between the L-shaped connecting column 41 and the vacuum furnace 2, so as to open the furnace cover.

[0025] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired by it, without departing from the creative purpose of the present application, without creative design, similar structure and embodiments of the technical scheme are designed, which should belong to the protection scope of the present application.

Claims

1. A vacuum furnace lid directional opening and closing device, comprising a furnace lid (1) and a vacuum furnace (2), the furnace opening of the furnace lid (1) and the vacuum furnace (2) is provided with a high-temperature-resistant sealing gasket (3), characterized in that: The outer side of the furnace cover (1) is provided with an opening and closing device (4), one side of the vacuum furnace (2) body is provided with a reciprocating cylinder (5) for pushing the opening and closing movement of the furnace cover (1), and the reciprocating cylinder (5) is connected with the opening and closing device (4) through two inclined push rods (6); The opening and closing device (4) comprises an L-shaped connecting column (41) located on the outer wall of the furnace cover (1), the short column end of the L-shaped connecting column (41) is located at the center of the outer wall of the furnace cover (1), the short column end of the L-shaped connecting column (41) is connected with the outer wall of the furnace cover (1) through two semicircular stepped connecting discs (42), the short column end of the L-shaped connecting column (41) penetrates the semicircular stepped connecting disc (42), and the thick column end of the semicircular stepped connecting disc (42) is connected with the furnace cover (1) through a bolt structure.

2. A vacuum furnace lid orientation opening and closing device according to claim 1, characterized in that: The short column top end of the L-shaped connecting column (41) is provided with a fixing disc (421), and the inside of the semicircular stepped connecting disc (42) is provided with a fixing disc storage groove (422) for storing the fixing disc (421).

3. A vacuum furnace lid directional opening and closing device according to claim 2, characterized in that: The long column top end of the L-shaped connecting column (41) is provided with an inclined push rod control groove (61) for controlling the inclination angle of the inclined push rod (6), the top end of the telescopic rod of the reciprocating cylinder (5) is provided with a plane column (62) corresponding to the inclined push rod (6), the two ends of the inclined push rod (6) are located on the inner walls of the control grooves (61) and the outer walls on both sides of the plane column (62) respectively, and the control grooves (61) and the plane column (62) are connected with the inclined push rod (6) through pins.

4. A directional opening and closing device for a furnace cover of a vacuum furnace according to claim 3, characterized in that: The top end of the plane column (62) is provided with a T-shaped impact pad (63), the thin column end of the T-shaped impact pad (63) penetrates the plane column (62), the impact position of the T-shaped impact pad (63) is located in the control groove (61) inside the long column end of the L-shaped connecting column (41), the long column end of the L-shaped connecting column (41) is connected with the side wall of the vacuum furnace (2) through a pin structure, and the pin structure connecting the vacuum furnace (2) and the long column end of the L-shaped connecting column (41) is located in the inside of the T-shaped impact pad (63).

5. A directional opening and closing device for a furnace cover of a vacuum furnace according to claim 1, characterized in that: The side wall of the vacuum furnace (2) is provided with a cylinder base (51) for fixing the reciprocating cylinder (5), and the reciprocating cylinder (5) is connected with the cylinder base (51) through a bolt structure.

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