Intelligent locking and sealing enhancement device for furnace door of heat treatment furnace

Abstract

The utility model provides a kind of heat treatment furnace door intelligent locking and sealing enhancement device, including furnace body, furnace door and locking mechanism, furnace door side is connected with furnace body by hinged subassembly, locking mechanism is connected with furnace body outside, and it is located in the side away from hinged subassembly, annular groove is opened in furnace body front end, multiple positioning lock holes are opened in annular groove side, the position of furnace door corresponding annular groove is opened with convex edge, multiple negative pressure suction heads are inlaid in convex edge, door lock is equipped in the position of multiple positioning lock holes on furnace door, locking mechanism includes hinged seat and electric push rod.The utility model has the beneficial effects: through the preliminary sealing of convex edge and annular groove, the adsorption of negative pressure suction head, air cavity and negative pressure connector strengthens sealing, and the double mechanical intelligent locking of lock bolt, positioning lock hole, electric push rod and locking pin, realizes the efficiency, reliability, intelligentization of furnace door sealing and locking.

Description

Technical Field

[0001] This utility model mainly relates to the field of heat treatment furnace technology, specifically to a smart locking and sealing enhancement device for heat treatment furnace doors. Background Technology

[0002] Traditional heat treatment furnaces often use hinges for the doors and manual locking with pins. The seals rely on rubber sealing rings or direct contact between the flange face and the door. Under long-term high temperature and frequent opening and closing conditions, the sealing rings are prone to aging and deformation, and the flange face is prone to wear, resulting in sealing gaps. This makes it easy for gas to leak inside the furnace, which affects the stability of the heat treatment process and causes energy waste.

[0003] Among the above-mentioned locking methods, manual locking is inefficient, requires a lot of physical strength, and is difficult to ensure uniform locking force, which can easily lead to partial incomplete locking. As the equipment ages, wear and tear on the locking components will further reduce the reliability of locking, and may even cause safety hazards due to seal failure. It cannot meet the requirements of modern heat treatment production for high efficiency, precision and safety.

[0004] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model: This utility model provides an intelligent locking and sealing enhancement device for the furnace door of a heat treatment furnace, in order to solve the technical problems existing in the background art.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: an intelligent locking and sealing enhancement device for a heat treatment furnace door, comprising a furnace body, a furnace door, and a locking mechanism. One side of the furnace door is connected to the furnace body via a hinge assembly. The locking mechanism is connected to the outside of the furnace and located on the side away from the hinge assembly. An annular groove is provided at the front end of the furnace body, and multiple positioning lock holes are provided on one side of the annular groove. A raised edge is provided on the furnace door corresponding to the position of the annular groove, and multiple negative pressure suction heads are embedded in the raised edge. A door lock is provided on the furnace door corresponding to the positions of the multiple positioning lock holes. The locking mechanism includes a hinge seat and an electric push rod.

[0007] Furthermore, the furnace door has an air chamber that is connected to multiple negative pressure suction heads, and the front end of the furnace door is provided with a negative pressure connector that is connected to the air chamber.

[0008] Furthermore, the convex edge is matched with the annular groove, and multiple negative pressure suction heads are equally spaced within the convex edge.

[0009] Furthermore, the door lock includes multiple latches that match the positioning lock holes, and each latch is provided with a positioning plate. A limit hole is opened on one side of the positioning plate, and the positioning plate is welded to the side of the furnace door.

[0010] Furthermore, the telescopic end of the electric push rod is connected to a U-shaped locking plate, and the inner side of the U-shaped locking plate is provided with a locking pin corresponding to the limiting hole.

[0011] Furthermore, the hinge seat is fixed to the outside of the furnace body, and the fixed end of the electric push rod is rotatably connected to the hinge seat through a positioning pin.

[0012] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: Through the initial sealing of the raised edge and annular groove, the enhanced sealing through the adsorption of the negative pressure suction head, air chamber and negative pressure connector, and the dual mechanical intelligent locking of the locking tongue, positioning lock hole, electric push rod and locking pin, the furnace door sealing and locking is achieved with high efficiency, reliability and intelligence.

[0013] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle; Figure 3 This is a schematic diagram of the furnace body structure of this utility model; Figure 4 This is an enlarged schematic diagram of section A of the furnace body structure of this utility model; Figure 5 This is a schematic diagram of the furnace door structure of this utility model; Figure 6 This is a schematic diagram of the furnace door structure from another angle of this utility model; Figure 7 This is an enlarged schematic diagram of section B of the furnace door structure of this utility model; Figure 8 This is a schematic diagram of the locking mechanism of this utility model.

[0015] Figure label: 1. Furnace body; 101. Annular groove; 102. Positioning lock hole; 2. Furnace door; 201. Raised edge; 202. Negative pressure suction head; 203. Negative pressure connector; 3. Locking mechanism; 301. Hinge seat; 302. Electric push rod; 303. U-shaped card plate; 304. Locking pin; 4. Hinge assembly; 5. Door lock; 501. Lock tongue; 502. Positioning plate; 503. Limiting hole. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] See attached document Figure 1-8A smart locking and sealing enhancement device for a heat treatment furnace door includes a furnace body 1, a furnace door 2, and a locking mechanism 3. One side of the furnace door 2 is connected to the furnace body 1 via a hinge assembly 4. The locking mechanism 3 is connected to the outside of the furnace body 1 and is located on the side away from the hinge assembly 4. An annular groove 101 is provided at the front end of the furnace body 1. Multiple positioning lock holes 102 are provided on one side of the annular groove 101. A raised edge 201 is provided on the furnace door 2 at the position corresponding to the annular groove 101. Multiple negative pressure suction heads 202 are embedded in the raised edge 201. A door lock 5 is provided on the furnace door 2 at the position corresponding to the multiple positioning lock holes 102. The locking mechanism 3 includes a hinge seat 301 and an electric push rod 302.

[0021] The front end face of the furnace body 1 is machined with an annular groove 101. The shape and size of the groove are precisely matched with the protrusion 201 of the furnace door 2. When the furnace door 2 is closed, the protrusion 201 can be embedded in the annular groove 101, which achieves preliminary mechanical positioning and forms the first sealing structure. On one side wall of the annular groove 101, multiple positioning lock holes 102 are evenly distributed to provide a mating interface for the door lock 5 of the furnace door 2.

[0022] Furnace door 2 is used to seal the front opening of furnace body 1. A raised edge 201 is provided on the side of furnace door 2 facing furnace body 1. The shape and size of the raised edge 201 perfectly match the annular groove 101 of furnace body 1, ensuring precise alignment when furnace door 2 is closed. Multiple negative pressure suction heads 202 are embedded at equal intervals on the end face of the raised edge 201. An air chamber is opened inside furnace door 2, and all negative pressure suction heads 202 communicate with this air chamber. A negative pressure connector 203 is provided at the front end of furnace door 2, and the negative pressure connector 203 also communicates with the air chamber. When enhanced sealing is required, a vacuum pump or other equipment can be connected to the negative pressure connector 203 to remove air from the air chamber. All negative pressure suction heads 202 are drawn into a negative pressure state, and the negative pressure suction heads 202 generate an adsorption force, which tightly adheres to the inner wall of the annular groove 101, thereby greatly improving the sealing performance between the furnace door 2 and the furnace body 1, and effectively preventing the leakage of high-temperature gas or protective atmosphere in the furnace during the heat treatment process; one side of the furnace door 2 is hinged to the furnace body 1 through the hinge assembly 4. The hinge assembly 4 provides rotational support for the furnace door 2, so that the furnace door 2 can rotate flexibly around the hinge axis to realize the switching of opening and closing actions. On the side of the furnace door 2 away from the hinge assembly 4, a door lock 5 is provided that cooperates with the positioning lock hole 102 on the furnace body 1.

[0023] The door lock 5 is used to achieve mechanical locking in conjunction with the furnace body 1. The locking tongue 501 corresponds one-to-one with the positioning locking hole 102 of the furnace body 1. When the furnace door 2 is closed in place, the locking tongue 501 can be inserted into the positioning locking hole 102 to form a preliminary mechanical locking. Multiple locking tongues 501 are connected together on the positioning plate 502. The positioning plate 502 is firmly connected to the side of the furnace door 2 by welding to ensure that the locking tongue 501 is stable and reliable when under force. On one side of the positioning plate 502, a limiting hole 503 is opened. This hole provides a mating interface for the locking pin 304 of the locking mechanism 3 and is a key positioning structure for secondary locking.

[0024] The locking mechanism 3 is installed on the outside of the furnace body 1 and consists of a hinge seat 301, an electric push rod 302, a U-shaped clamping plate 303, and a locking pin 304. It realizes an intelligent electronically controlled secondary locking function. The specific principle is as follows: The hinge seat 301 is fixed to the outer surface of the furnace body 1 by bolts and other fasteners; the fixed end of the electric push rod 302 is rotatably connected to the hinge seat 301 through a positioning pin, so that the electric push rod 302 can rotate around the hinge seat 301 at a small angle to adapt to the spatial position change during the closing process of the furnace door 2; the telescopic end of the electric push rod 302 is fixedly connected to the U-shaped clamping plate 303. When the electric push rod 302 extends or retracts, it can drive the U-shaped clamping plate 303 to move axially and extend towards the positioning plate 502; a locking pin 304 is installed on the inner side of the U-shaped clamping plate 303. The locking pin 304 corresponds precisely to the limiting hole 503 on the positioning plate 502 of the door lock 5. After the furnace door 2 is closed and the latch 501 is inserted into the positioning lock hole 102, the electric push rod 302 is energized and extends. The electric push rod 302 and the U-shaped locking plate 303 are manually pushed to swing along the hinge seat 301 towards the furnace door 2 until the locking pin 304 is inserted into the limiting hole 503. Then the electric push rod 302 drives the U-shaped locking plate 303 to retract and reset, locking the positioning plate 502 and forming a secondary lock on the door lock 5. This prevents the latch 501 from coming out of the positioning lock hole 102 and further enhances the reliability of the lock. Since the electric push rod 302 can be operated through the electronic control system, the entire locking process is automated, achieving the effect of intelligent locking.

[0025] In summary, this device achieves high efficiency, reliability, and intelligence in sealing and locking the furnace door through the initial sealing of the raised edge and annular groove, the enhanced sealing through the adsorption of the negative pressure suction head, air chamber, and negative pressure connector, and the dual mechanical intelligent locking of the locking tongue, positioning lock hole, electric push rod, and locking pin.

[0026] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A smart locking and sealing enhancement device for a heat treatment furnace door, comprising a furnace body (1), a furnace door (2), and a locking mechanism (3), wherein one side of the furnace door (2) is connected to the furnace body (1) via a hinge assembly (4), characterized in that: The locking mechanism (3) is connected to the outside of the furnace body (1) and is located on the side away from the hinge assembly (4). The front end of the furnace body (1) is provided with an annular groove (101). A plurality of positioning lock holes (102) are provided on one side of the annular groove (101). The furnace door (2) is provided with a protruding edge (201) at the position corresponding to the annular groove (101). A plurality of negative pressure suction heads (202) are embedded in the protruding edge (201). A door lock (5) is provided on the furnace door (2) at the position corresponding to the plurality of positioning lock holes (102). The locking mechanism (3) includes a hinge seat (301) and an electric push rod (302).

2. The intelligent locking and sealing enhancement device for a heat treatment furnace door according to claim 1, characterized in that: The furnace door (2) has an air chamber inside, which is connected to a plurality of negative pressure suction heads (202). The front end of the furnace door (2) is provided with a negative pressure connector (203) connected to the air chamber.

3. The intelligent locking and sealing enhancement device for a heat treatment furnace door according to claim 1, characterized in that: The protruding edge (201) is matched with the annular groove (101), and a plurality of negative pressure suction heads (202) are equally spaced within the protruding edge (201).

4. The intelligent locking and sealing enhancement device for a heat treatment furnace door according to claim 1, characterized in that: The door lock (5) includes multiple latches (501) that match the positioning lock holes (102). Each latch (501) is provided with a positioning plate (502). A limiting hole (503) is opened on one side of the positioning plate (502). The positioning plate (502) is welded to the side of the furnace door (2).

5. The intelligent locking and sealing enhancement device for a heat treatment furnace door according to claim 4, characterized in that: The telescopic end of the electric push rod (302) is connected to a U-shaped card plate (303), and the inner side of the U-shaped card plate (303) is provided with a locking pin (304) corresponding to the limiting hole (503).

6. The intelligent locking and sealing enhancement device for a heat treatment furnace door according to claim 1, characterized in that: The hinge seat (301) is fixed to the outside of the furnace body (1), and the fixed end of the electric push rod (302) is rotatably connected to the hinge seat (301) through a positioning pin.

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