Furnace door opening and closing driving system and furnace door opening and closing system

Abstract

The utility model belongs to the field of furnace doors, and particularly relates to a furnace door opening and closing driving system and a furnace door opening and closing system.The furnace door opening and closing driving system comprises a driving device, a furnace door opening and closing gas / hydraulic cylinder and N1 furnace door locking gas / hydraulic cylinders; the driving device comprises a gas / liquid supply device, a reversing valve and two groups of pipelines which are sequentially arranged, the other ends of main flow pipelines of the two groups of pipelines are connected with the reversing valve, a shunting pipeline Ia of a pipeline A is connected with an inlet / outlet I of a furnace door opening / closing gas / hydraulic cylinder, a shunting pipeline IIa is provided with a sequence valve I, and a shunting pipeline IIIa is connected with an inlet / outlet I of a furnace door locking gas / hydraulic cylinder; a sequence valve II is arranged on a shunting pipeline Ib of the pipeline B, the other end of the shunting pipeline Ib is connected with an inlet / outlet II of a furnace door opening / closing gas / hydraulic cylinder, and a shunting pipeline IIIb is connected with an inlet / outlet II of a furnace door locking gas / hydraulic cylinder. And the furnace door opening / closing gas / hydraulic cylinder works in sequence.

Description

Technical Field

[0001] The utility model belongs to the field of furnace doors, and in particular relates to a furnace door opening and closing drive system and a furnace door opening and closing system. Background Art

[0002] Industrial vacuum furnace doors are generally equipped with locking structures to ensure high sealing performance of the furnace doors. However, the current locking structures generally adopt a rotary locking structure, which has a relatively complex processing technology and high manufacturing costs. In addition, the current locking structures generally have multiple, and multiple locking mechanisms and opening and closing mechanisms all need to be equipped with separate drive mechanisms, resulting in a large number of drive mechanisms and complex control logic. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a furnace door opening and closing system which can open and lock the furnace door by adopting one driving device.

[0004] The utility model provides a furnace door opening and closing driving system, including a driving device, a furnace door opening and closing gas / hydraulic cylinder and N1 furnace door locking gas / hydraulic cylinders, the furnace door opening and closing gas / hydraulic cylinder and the furnace door locking gas / hydraulic cylinder both include an inlet and outlet Ⅰ and an inlet and outlet Ⅱ;

[0005] The driving device includes an air / liquid supply device, a reversing valve and two sets of pipelines which are arranged in sequence. The pipelines include a main pipeline, a branch pipeline I and a branch pipeline II connected to one end of the main pipeline, and N1 branch pipelines III connected to the other end of the branch pipeline II.

[0006] The other ends of the mainstream pipelines of the two groups of pipelines are connected to the reversing valve. The two groups of pipelines are pipeline A and pipeline B. The diverter pipeline Ⅰa of pipeline A is connected to the inlet and outlet Ⅰ of the furnace door opening and closing gas / hydraulic cylinder, and the diverter pipeline Ⅱa is provided with a sequence valve Ⅰ. N1 diverter pipelines Ⅲa are respectively connected to the inlet and outlet Ⅰ of N1 furnace door locking gas / hydraulic cylinders; the diverter pipeline Ⅰb of pipeline B is provided with a sequence valve Ⅱ, and the other end of the diverter pipeline Ⅰb is connected to the inlet and outlet Ⅱ of the furnace door opening and closing gas / hydraulic cylinder, and N1 diverter pipelines Ⅲb are respectively connected to the inlet and outlet Ⅱ of N1 furnace door locking gas / hydraulic cylinders.

[0007] Furthermore, the furnace door opening and closing gas / hydraulic cylinder and the furnace door locking gas / hydraulic cylinder are both air cylinders.

[0008] Furthermore, the reversing valve is a five-port, three-position, center-sealed, double-control solenoid valve.

[0009] Furthermore, the gas / liquid supply device is a gas supply device, which includes a gas source, a gas storage tank, a compressed air triplet and a residual pressure release valve arranged in sequence, and the residual pressure release valve is connected to the reversing valve.

[0010] Furthermore, speed regulating valves are also provided on the diversion pipeline II and the diversion pipeline III.

[0011] The present invention also provides a furnace door opening and closing system, comprising a furnace body, a furnace door, a furnace door bracket and the furnace door opening and closing drive system;

[0012] The cylinder body of the furnace door opening and closing gas / hydraulic cylinder is fixedly arranged on the furnace door bracket, the piston is fixedly connected to the furnace door, and the piston of the furnace door opening and closing gas / hydraulic cylinder is extended and retracted to drive the furnace door to cooperate with or separate from the furnace body;

[0013] A furnace door pressure plate is hingedly arranged on the side of the furnace body, the cylinder body of the furnace door locking gas / hydraulic cylinder is hingedly arranged on the side of the furnace body, the piston is hinged to one end of the furnace door pressure plate, the piston of the furnace door locking gas / hydraulic cylinder is extended and retracted, driving the furnace door pressure plate to cooperate with or separate from the furnace body.

[0014] Furthermore, N1 furnace door locking air / hydraulic cylinders and furnace door pressure plates are arranged in a circular array on the furnace body.

[0015] Furthermore, the furnace door opening and closing system also includes a guide rail slide assembly, the guide rail of the guide rail slide assembly is arranged on the furnace door bracket, and the furnace door is arranged on the slide of the guide rail slide assembly.

[0016] Furthermore, the extension and retraction direction of the furnace door opening and closing gas / hydraulic cylinder is parallel to the axial direction of the furnace body.

[0017] Furthermore, a sealing ring is provided on the opening surface of the furnace body or the furnace door.

[0018] The beneficial effect of the utility model is that when closing the furnace door, the furnace door is first matched with the opening of the furnace body by the furnace door opening and closing gas / hydraulic cylinder, and after the furnace door opening and closing gas / hydraulic cylinder snaps the furnace door into the opening of the furnace body, then N1 furnace door locking gas / hydraulic cylinders synchronously lock the furnace door, and conversely, when opening the furnace door, the furnace door can be first unlocked synchronously by N1 furnace door locking gas / hydraulic cylinders, and then the furnace door is controlled to leave the furnace body by the furnace door opening and closing gas / hydraulic cylinder. Ultimately, the driving device is reduced, the cost and control complexity are reduced, and the coordinated control of N1 furnace door locking gas / hydraulic cylinders and furnace door opening and closing gas / hydraulic cylinders is completed at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 This is a schematic diagram of the structure of the furnace door opening and closing drive system in the utility model;

[0020] Attached Figure 2 This is a schematic diagram of the first angle structure of the furnace door opening and closing system of the utility model;

[0021] Attached Figure 3 This is a second angle structural diagram of the furnace door opening and closing system of the utility model;

[0022] Attached Figure 4This is a front view of the furnace door in the furnace door opening and closing system of the utility model in the open state;

[0023] Attached Figure 5 It is a front view of the furnace door in the furnace door opening and closing system of the utility model in the closed state.

[0024] In the figure, 1-furnace door opening and closing gas / hydraulic cylinder; 2-furnace door locking gas / hydraulic cylinder; 3-driving device; 31-gas / liquid supply device; 311-gas source; 312-gas storage tank; 313-compressed air triplex; 314-residual pressure release valve; 32-reversing valve; 33-pipeline A; 331-mainstream pipeline a; 332-diverter pipeline Ⅰa; 333-diverter pipeline Ⅱa; 334-diverter pipeline Ⅲa; 34-pipeline B; 341-mainstream pipeline b; 342-diverter pipeline Ⅰb; 343-diverter pipeline Ⅱb; 344-diverter pipeline Ⅲb; 35-sequence valve Ⅰ; 36-sequence valve Ⅱ; 37-speed regulating valve; 4-furnace body; 5-furnace door; 6-furnace door bracket; 7-furnace door pressure plate; 8-guide rail; 9-slide plate; 10-sealing ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] As attached Figure 1 -Attached Figure 5 As shown, the utility model provides a furnace door opening and closing drive system, including a drive device 3, a furnace door opening and closing gas / hydraulic cylinder 1 and N1 furnace door locking gas / hydraulic cylinders 2, the furnace door opening and closing gas / hydraulic cylinder 1 and the furnace door locking gas / hydraulic cylinder 2 both include an inlet and outlet Ⅰ and an inlet and outlet Ⅱ, wherein the furnace door opening and closing gas / hydraulic cylinder 1 and the furnace door locking gas / hydraulic cylinder 2 can adopt a cylinder or a hydraulic cylinder, both of which have a cylinder body and a piston slidably arranged in the cylinder body, and the two ends of the cylinder body are respectively provided with an inlet and outlet Ⅰ and an inlet and outlet Ⅱ, when the drive device 3 supplies gas or hydraulic oil to the air inlet Ⅰ, the piston moves toward one end of the inlet and outlet Ⅱ, and vice versa, it moves toward one end of the air inlet Ⅰ, the structure of the cylinder or the hydraulic cylinder is specifically the prior art, which will not be elaborated here;

[0030] The driving device 3 includes an air / liquid supply device 31, a reversing valve 32 and two groups of pipelines which are arranged in sequence. The driving device 3, the furnace door opening / closing air / hydraulic cylinder 1 and the furnace door locking air / hydraulic cylinder 2 form a circuit. The connection structures of the two groups of pipelines are consistent, and both include a mainstream pipeline, a branch pipeline I and a branch pipeline II connected to one end of the mainstream pipeline, and N1 branch pipelines III connected to the other end of the branch pipeline II.

[0031] The other ends of the mainstream pipelines of the two sets of pipelines are connected to the reversing valve 32, and the two mainstream pipelines are connected to different connection ports of the reversing valve 32 to achieve reversing circulation of airflow or hydraulic oil in the two sets of pipelines.

[0032] For the convenience of explanation, the two groups of pipelines are defined as pipeline A33 and pipeline B34 respectively. Pipeline A33 includes a mainstream pipeline a331, a branch pipeline Ia332 and a branch pipeline IIa333 connected to one end of the mainstream pipeline a331, and N1 branch pipelines IIIa334 connected to the other end of the branch pipeline IIa333; pipeline B34 includes a mainstream pipeline b341, a branch pipeline Ib342 and a branch pipeline IIb343 connected to one end of the mainstream pipeline b341, and N1 branch pipelines IIIb344 connected to the other end of the branch pipeline IIb343;

[0033] The diversion pipe Ⅰa332 of pipeline A33 is connected to the inlet and outlet Ⅰ of the furnace door opening and closing gas / hydraulic cylinder 1, and the diversion pipe Ⅱa333 is provided with a sequence valve Ⅰ35. N1 diversion pipes Ⅲa334 are respectively connected to the inlet and outlet Ⅰ of N1 furnace door locking gas / hydraulic cylinders 2; the diversion pipe Ⅰb342 of pipeline B34 is provided with a sequence valve Ⅱ36, and the other end of the diversion pipe Ⅰb342 is connected to the inlet and outlet Ⅱ of the furnace door opening and closing gas / hydraulic cylinder 1, and N1 diversion pipes Ⅲb344 are respectively connected to the inlet and outlet Ⅱ of N1 furnace door locking gas / hydraulic cylinders 2.

[0034] The pistons of the furnace door opening and closing gas / hydraulic cylinder 1 and the furnace door locking gas / hydraulic cylinder 2 are consistent in direction from inlet and outlet Ⅰ to inlet and outlet Ⅱ, and both are consistent, and both are piston extension or piston retraction. In this way, the drive device 3 can be realized that when the reversing valve 32 controls the pipeline A33 to be connected with the gas / liquid supply device 31, the gas or hydraulic oil will pass through the main pipeline a331 and then enter the branch pipeline Ⅰa332 and enter the inlet and outlet Ⅰ of the furnace door opening and closing gas / hydraulic cylinder 1. At this time, the piston of the furnace door opening and closing gas / hydraulic cylinder 1 extends or retracts. After the piston of the furnace door opening and closing gas / hydraulic cylinder 1 reaches the limit position, the gas or hydraulic oil will enter the branch pipeline Ⅱa333 and the sequence valve Ⅰ35, and then be branched into N1 branch pipelines Ⅲa334 and then enter the inlet and outlet Ⅰ of the N1 furnace door locking gas / hydraulic cylinder 2. At this time, the pistons of the N1 furnace door locking gas / hydraulic cylinders 2 extend or retract synchronously. During this process, pipeline b34 is emptied. If the gas / liquid supply device 31 provides gas, it will be discharged after passing through the mainstream pipeline b341 and the reversing valve 32. If the gas / liquid supply device 31 provides hydraulic oil, it will flow back to the oil tank after passing through the mainstream pipeline b341 and the reversing valve 32.

[0035] When the control pipeline B34 of the reversing valve 32 is connected to the gas / liquid supply device 31, the gas or hydraulic oil will pass through the main pipeline b341 and then enter the branch pipeline IIb343, and then be branched into N1 branch pipelines IIIb344 and then enter the inlet and outlet II of the N1 furnace door locking gas / hydraulic cylinders 2. At this time, the pistons of the N1 furnace door locking gas / hydraulic cylinders 2 will be retracted or extended synchronously. After the pistons of the N1 furnace door locking gas / hydraulic cylinders 2 reach the limit position, the gas or hydraulic oil will enter the branch pipeline Ib342 and the sequence valve II36, and then enter the inlet and outlet II of the furnace door opening and closing gas / hydraulic cylinder 1. At this time, the piston of the furnace door opening and closing gas / hydraulic cylinder 1 will be retracted or extended. During this process, pipeline a33 is emptied. If the gas / liquid supply device 31 provides gas, it will be discharged after passing through the mainstream pipeline a331 and the reversing valve 32. If the gas / liquid supply device 31 provides hydraulic oil, it will flow back to the oil tank after passing through the mainstream pipeline a331 and the reversing valve 32.

[0036] That is, the furnace door opening and closing driving system provided by the utility model realizes N1 furnace door locking gas / hydraulic cylinders 2 to work synchronously and work successively with the furnace door opening and closing gas / hydraulic cylinder 1 through a set of driving devices 3, so that when closing the furnace door 5, the furnace door 5 is first matched with the opening of the furnace body 4 through the furnace door opening and closing gas / hydraulic cylinder 1, and after the furnace door opening and closing gas / hydraulic cylinder 1 snaps the furnace door 5 into the opening of the furnace body 4, then the N1 furnace door locking gas / hydraulic cylinders 2 synchronously lock the furnace door 5, and vice versa, when opening the furnace door 5, the furnace door 5 can be first unlocked synchronously through the N1 furnace door locking gas / hydraulic cylinders 2, and then the furnace door opening and closing gas / hydraulic cylinder 1 controls the furnace door 5 to leave the furnace body 4. Finally, the driving devices 3 are reduced, the cost and control complexity are reduced, and the coordinated control of the N1 furnace door locking gas / hydraulic cylinders 2 and the furnace door opening and closing gas / hydraulic cylinder 1 is completed at the same time.

[0037] In a preferred embodiment, the furnace door opening and closing gas / hydraulic cylinder 1 and the furnace door locking gas / hydraulic cylinder 2 are both cylinders. The cylinder structure is simpler, making the equipment more economical. In this embodiment, the reversing valve 32 is a five-port three-position center-sealed double-control solenoid valve, which facilitates the control of pipeline A33 and pipeline B34 for reversing switching, and realizes the opening and closing control of the furnace door 5 through electromagnetic control. In this embodiment, the gas / liquid supply device 31 is a gas supply device, including an air source 311, an air storage tank 312, a compressed air triplet 313 and a residual pressure release valve 314 arranged in sequence, and the residual pressure release valve 314 is connected to the reversing valve 32. In this embodiment, a speed regulating valve 37 is also provided on the diversion pipeline II and the diversion pipeline III.

[0038] In other embodiments, the furnace door opening and closing gas / hydraulic cylinder 1 and the furnace door locking gas / hydraulic cylinder 2 may also adopt hydraulic cylinders. In this case, the reversing valve 32 may adopt a two-position four-way reversing valve, and the gas / liquid supply device 31 includes an oil tank and a pump assembly arranged on two mainstream pipelines.

[0039] The present invention also provides a furnace door opening and closing system, comprising a furnace body 4, a furnace door 5, a furnace door bracket 6 and the above-mentioned furnace door opening and closing drive system;

[0040] The cylinder body of the furnace door opening and closing gas / hydraulic cylinder 1 is fixedly arranged on the furnace door bracket 6, and the piston is fixedly connected to the furnace door 5. The piston of the furnace door opening and closing gas / hydraulic cylinder 1 is extended and retracted to drive the furnace door 5 to cooperate with or separate from the furnace body 4. Preferably, the piston of the furnace door opening and closing gas / hydraulic cylinder 1 is extended to drive the furnace door 5 to cooperate with the furnace body 4, and vice versa, the piston of the furnace door opening and closing gas / hydraulic cylinder 1 is retracted to drive the furnace door 5 to separate from the furnace body 4;

[0041] A furnace door pressure plate 7 is hingedly provided on the side of the furnace body 4, and the cylinder body of the furnace door locking gas / hydraulic cylinder 2 is hingedly provided on the side of the furnace body 4. The piston is hinged to one end of the furnace door pressure plate 7. The piston of the furnace door locking gas / hydraulic cylinder 2 is extended and retracted to drive the furnace door pressure plate 7 to cooperate with or separate from the furnace body 4. Preferably, the piston of the furnace door locking gas / hydraulic cylinder 2 extends, driving the furnace door pressure plate 7 to rotate and one end abuts against the furnace door 5 to lock the furnace door 5. Conversely, the piston of the furnace door locking gas / hydraulic cylinder 2 retracts, driving the furnace door pressure plate 7 to rotate and leave the furnace door 5 to unlock the furnace door.

[0042] The furnace door opening and closing system can close and lock the furnace door 5, thereby ensuring the sealing effect of the furnace door 5. At the same time, the furnace door opening and closing drive system can use a set of drive devices 3 to provide driving force for the furnace door opening and closing gas / hydraulic cylinder 1 and the furnace door locking gas / hydraulic cylinder 2, and can also make them perform sequential actions, eliminating the control device and reducing the device cost and control cost.

[0043] In one of the embodiments, N1 furnace door locking gas / hydraulic cylinders 2 and furnace door pressure plates 7 are arranged in a circular array on the furnace body 4. In this embodiment, the furnace body 4 is a cylindrical furnace body, and the furnace door 5 is a circular plate structure furnace door. Preferably, N1=3, that is, the three furnace door locking gas / hydraulic cylinders 2 are arranged in a circular array, which can ensure the locking force and locking stability of the furnace door 5.

[0044] In one of the embodiments, the furnace door opening and closing system also includes a guide rail slide assembly, the guide rail 8 of the guide rail slide assembly is set on the furnace door bracket 6, and the furnace door 5 is set on the slide 9 of the guide rail slide assembly, so as to improve the movement stability of the furnace door 5. In this embodiment, the piston of the furnace door opening and closing air / hydraulic cylinder 1 is fixedly set on the slide 9.

[0045] In one of the embodiments, the telescopic direction of the furnace door opening / closing gas / hydraulic cylinder 1 is parallel to the axial direction of the furnace body 4 , that is, the furnace door 5 is opened and closed along the axial direction of the furnace body 4 .

[0046] In one embodiment, a sealing ring 10 is disposed on the opening surface of the furnace body 4 or the furnace door 5 to improve the sealing performance of the furnace door 5 after being locked.

[0047] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can make many possible changes, modifications or modifications to the present invention without departing from the scope of the present invention by using the above disclosed technical contents. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the present invention should fall within the scope of protection of the present invention.

Claims

1. A furnace door opening and closing drive system, characterized in that: It comprises a driving device (3), a furnace door opening and closing gas / hydraulic cylinder (1) and N1 furnace door locking gas / hydraulic cylinders (2), wherein the furnace door opening and closing gas / hydraulic cylinder (1) and the furnace door locking gas / hydraulic cylinder (2) both comprise an inlet and outlet I and an inlet and outlet II; The driving device (3) comprises an air / liquid supply device (31), a reversing valve (32) and two groups of pipelines which are arranged in sequence, wherein the pipelines comprise a main pipeline, a branch pipeline I and a branch pipeline II connected to one end of the main pipeline, and N1 branch pipelines III connected to the other end of the branch pipeline II; The other ends of the main pipelines of the two groups of pipelines are connected to the reversing valve (32). The two groups of pipelines are pipeline A (33) and pipeline B (34). The branch pipeline Ia (332) of pipeline A (33) is connected to the inlet and outlet I of the furnace door opening and closing gas / hydraulic cylinder (1), and the branch pipeline IIa (333) is provided with a sequence valve I (35). N1 branch pipelines IIIa (334) are respectively connected to the inlet and outlet I of N1 furnace door locking gas / hydraulic cylinders (2); the branch pipeline Ib (342) of pipeline B (34) is provided with a sequence valve II (36), and the other end of the branch pipeline Ib (342) is connected to the inlet and outlet II of the furnace door opening and closing gas / hydraulic cylinder (1), and N1 branch pipelines IIIb (344) are respectively connected to the inlet and outlet II of N1 furnace door locking gas / hydraulic cylinders (2).

2. The furnace door opening and closing drive system according to claim 1, characterized in that: The furnace door opening and closing gas / hydraulic cylinder (1) and the furnace door locking gas / hydraulic cylinder (2) are both gas cylinders.

3. The furnace door opening and closing drive system according to claim 2, characterized in that: The reversing valve (32) is a five-port, three-position, center-sealed, double-controlled solenoid valve.

4. The furnace door opening and closing drive system according to claim 3, characterized in that: The gas / liquid supply device (31) is a gas supply device, comprising a gas source (311), a gas storage tank (312), a compressed air triplet (313) and a residual pressure release valve (314) which are arranged in sequence, and the residual pressure release valve (314) is connected to the reversing valve (32).

5. The furnace door opening and closing drive system according to any one of claims 1 to 4, characterized in that: The diversion pipeline II and the diversion pipeline III are also provided with speed regulating valves (37).

6. A furnace door opening and closing system, characterized in that: It comprises a furnace body (4), a furnace door (5), a furnace door bracket (6) and the furnace door opening and closing drive system according to any one of claims 1 to 5; The cylinder body of the furnace door opening and closing gas / hydraulic cylinder (1) is fixedly arranged on the furnace door bracket (6), and the piston is fixedly connected to the furnace door (5). The piston of the furnace door opening and closing gas / hydraulic cylinder (1) is extended and retracted to drive the furnace door (5) to cooperate with or separate from the furnace body (4); A furnace door pressure plate (7) is hingedly provided on the side of the furnace body (4), the cylinder body of the furnace door locking gas / hydraulic cylinder (2) is hingedly provided on the side of the furnace body (4), the piston is hingedly connected to one end of the furnace door pressure plate (7), and the piston of the furnace door locking gas / hydraulic cylinder (2) is extended and retracted to drive the furnace door pressure plate (7) to cooperate with or separate from the furnace body (4).

7. The furnace door opening and closing drive system according to claim 6, characterized in that: N1 furnace door locking air / hydraulic cylinders (2) and furnace door pressure plates (7) are arranged in a circular array on the furnace body (4).

8. The furnace door opening and closing drive system according to claim 6, characterized in that: It also comprises a guide rail slide assembly, wherein the guide rail (8) of the guide rail slide assembly is arranged on the furnace door bracket (6), and the furnace door (5) is arranged on the slide (9) of the guide rail slide assembly.

9. The furnace door opening and closing drive system according to claim 6, characterized in that: The telescopic direction of the furnace door opening / closing gas / hydraulic cylinder (1) is parallel to the axial direction of the furnace body (4).

10. The furnace door opening and closing drive system according to claim 6, characterized in that: A sealing ring (10) is provided on the opening surface of the furnace body (4) or the furnace door (5).

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