Safety alarm device for operation in furnace

Abstract

A safety alarm device for operation in a furnace effectively achieves the purposes of emergency door closing stopping and personnel reminding, and comprises a push rod, an alarm device and a control device, the fixed sleeve sleeves the outer side of the push rod and is in sliding connection with the push rod, and the end part of the fixed sleeve is detachably connected with the furnace wall; the number of the guide frames is two, the guide frames are symmetrically arranged, the guide frames are fixedly connected with the furnace wall, and the appearance of each guide frame is in an L shape; each positioning frame is detachably connected with the corresponding guide frame; each travel switch is fixedly connected with the corresponding positioning frame; the swing rod is arranged on the outer side of the fixed sleeve in a sleeved mode and connected with the fixed sleeve in a rotating mode and connected with the push rod in a sliding mode. The door opening device is novel in structure, ingenious in conception and easy and convenient to operate, and the function that the door can be operated to be opened is effectively added.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety alarm equipment, and in particular relates to a safety alarm device for furnace operation. Background Art

[0002] After processing large metal parts, they generally need to be heat treated. Metal heat treatment is a process in which a metal or alloy workpiece is placed in a certain medium and heated to a suitable temperature, and then kept at this temperature for a certain period of time, and then cooled in different media at different speeds to control its performance by changing the surface or internal microstructure of the metal material. Larger metal parts require a larger practical heating furnace volume. Since the heating process of large metal parts takes a long time, the equipment generally needs to be regularly inspected and maintained to extend the service life of the heating furnace;

[0003] Generally, maintenance requires manual entry into the heating furnace to inspect the inner wall of the furnace. During this process, external staff cannot see the workers inside the heating furnace, and it is easy to close the furnace door directly. The internal workers cannot operate the furnace door to stop it, which poses a very large safety hazard. In addition, the existing emergency stop equipment cannot be opened by internal personnel. Therefore, a safety alarm device for furnace operations that solves the above problems is needed. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a safety alarm device for furnace operation, which effectively achieves the purpose of emergency stop door closing and reminding personnel, and adds the function of operating door opening.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme, including: a push rod, the middle part of which passes through the furnace wall; a fixed sleeve, which is sleeved on the outer side of the push rod and is slidably connected to the push rod, and the end of the fixed sleeve is detachably connected to the furnace wall; two guide frames, which are symmetrically arranged, the guide frames are fixedly connected to the furnace wall, and the guide frames are L-shaped in appearance; positioning frames, each of which is detachably connected to the corresponding guide frame; travel switches, each of which is fixedly connected to the corresponding positioning frame; a swing rod, which is sleeved on the outer side of the fixed sleeve, is rotatably connected to the fixed sleeve, and is slidably connected to the push rod.

[0006] Preferably, it also includes a fixed plate, which is placed between the two guide frames and fixedly connected to the two guide frames; a trigger rod, which is slidably connected to the fixed plate; a micro switch, which is fixedly connected to the fixed plate, and its trigger position is fixedly connected to the trigger rod; an audible and visual alarm, which is fixedly connected to the fixed plate and electrically connected to the travel switch.

[0007] Preferably, a first bolt is threadedly connected to the middle of the swing rod, an arc-shaped groove is opened at the position of the fixed sleeve corresponding to the swing rod, a push groove is opened on the outer side of the push rod, and the end of the first bolt is placed in the arc-shaped groove and the push groove.

[0008] Preferably, a push plate is fixedly connected to the outer side of the push rod, a return spring is sleeved on the outer side of the push rod, and the return spring is fixedly connected to the push plate and the fixed sleeve.

[0009] Preferably, a lining plate is sleeved on the outer side of the push rod, and a plurality of second bolts are threadedly connected to one side of the fixed sleeve close to the furnace wall, and each of the second bolts passes through the lining plate and is threadedly connected to the furnace wall.

[0010] Preferably, a triggering slot is provided at one end of the triggering rod close to the swinging rod, and a circular boss is fixedly connected to one side of the swinging rod, and the circular boss is placed in the triggering slot.

[0011] Preferably, a first slide groove is opened in the middle of each guide frame, a second slide groove is opened in the middle of each positioning frame, a third bolt is opened in the middle of each positioning frame, the third bolt is placed in the corresponding first slide groove and second slide groove, and a fixing nut is threadedly connected to the outer side of each third bolt.

[0012] Preferably, both ends of the push rod are fixedly connected with metal discs.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model comprises a push rod, a fixed sleeve, a guide frame, a positioning frame, a travel switch and a metal disc. When in use, the metal disc with a round hole is pushed to move the push rod, and then the metal disc outside the furnace body triggers the travel switch, and the sound and light alarm emits sound and flashes to remind the operator outside the furnace, and the furnace door stops moving at the same time, effectively achieving the purpose of emergency stop and door closing and reminding personnel;

[0015] 2. The utility model comprises a swing rod, a trigger rod, a micro switch, a trigger slide groove and a circular boss. When in use, the push rod is rotated to make the first bolt slide along the arc slide groove, and the swing rod rotates synchronously at the same time, the circular boss slides along the trigger slide groove, and the trigger rod slides along the fixed plate and triggers the micro switch, and then the motor of the furnace door switch is controlled to drive the furnace door to open. After the push rod is rotated, the reset spring can also reset the push rod, which effectively increases the function of operating the door opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the fixed sleeve in the utility model.

[0019] Figure 3 It is a schematic diagram of the positions of the arc-shaped slide groove and the push slide groove in the utility model.

[0020] Figure 4 It is a schematic diagram of the limiting structure of the positioning frame in the utility model.

[0021] In the figure: 1. push rod; 2. fixed sleeve; 3. guide frame; 4. positioning frame; 5. travel switch; 6. swing rod; 7. fixed plate; 8. trigger rod; 9. micro switch; 10. sound and light alarm; 11. first bolt; 12. arc slide; 13. push slide; 14. push plate; 15. return spring; 16. lining plate; 17. second bolt; 18. trigger slide; 19. circular boss; 20. first slide; 21. second slide; 22. third bolt; 23. fixing nut; 24. metal disc. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-Figure 4 The specific implementation methods of the utility model are further described in detail:

[0023] Embodiment 1, by Figure 1-Figure 4 The invention provides a furnace, comprising: a push rod 1, the middle of which penetrates the furnace wall, and the push rod 1 is made of alloy material and has high high temperature resistance. A fixed sleeve 2, which is sleeved on the outside of the push rod 1 and slidably connected to the push rod 1, and the end of the fixed sleeve 2 is detachably connected to the furnace wall, and the fixed sleeve 2 is placed on the outside of the furnace. Two guide frames 3 are symmetrically arranged, and the guide frames 3 are fixedly connected to the furnace wall, and the guide frames 3 are L-shaped in shape. A positioning frame 4, each of which is detachably connected to the corresponding guide frame 3. A travel switch 5, the travel switch 5 is electrically connected to the motor for controlling the furnace door switch, and each of which is fixedly connected to the corresponding positioning frame 4, and the positioning frame 4 is connected to the travel switch 5 by screws. When in use, the push rod 1 is pushed to trigger the travel switch 5, so that the motor for controlling the furnace door switch is turned off, and the furnace door is stopped from moving. A swing rod 6, which is sleeved on the outside of the fixed sleeve 2, and is rotatably connected to the fixed sleeve 2, and is slidably connected to the push rod 1. When in use, the push rod 1 is rotated to make the swing rod 6 rotate synchronously.

[0024] It also includes a fixed plate 7, which is placed between the two guide frames 3 and fixedly connected to the two guide frames 3. A trigger rod 8 is slidably connected to the fixed plate 7. A micro switch 9 is fixedly connected to the fixed plate 7. The micro switch 9 is electrically connected to the motor that controls the furnace door switch. Its trigger position is fixedly connected to the trigger rod 8. When in use, the swing rod 6 rotates to make the trigger rod 8 move relative to the fixed plate 7, and then the micro switch 9 is triggered, and then the motor that controls the furnace door switch drives the furnace door to open. An audible and visual alarm 10 is fixedly connected to the fixed plate 7 and electrically connected to the travel switch 5. When the travel switch 5 is triggered during use, the audible and visual alarm 10 emits a sound and flashes to remind the operator.

[0025] The middle part of the swing rod 6 is threadedly connected with a first bolt 11, the fixed sleeve 2 is provided with an arc-shaped slot 12 at a position corresponding to the swing rod 6, the outer side of the push rod 1 is provided with a push slot 13, the end of the first bolt 11 is placed in the arc-shaped slot 12 and the push slot 13, when in use, the push rod 1 is rotated to make the first bolt 11 slide along the arc-shaped slot 12, and the swing rod 6 rotates synchronously at the same time, when the push rod 1 slides along the axis, the first bolt 11 slides along the push slot 13, and the position of the swing rod 6 relative to the fixed sleeve 2 remains unchanged.

[0026] A push plate 14 is fixedly connected to the outer side of the push rod 1, and a return spring 15 is sleeved on the outer side of the push rod 1. The return spring 15 is fixedly connected to the push plate 14 and the fixed sleeve 2. When in use, the push rod 1 slides along the axis and the return spring 15 returns the push rod 1. When the push rod 1 rotates, the return spring 15 can also return the push rod 1.

[0027] A lining plate 16 is sleeved on the outer side of the push rod 1, and the lining plate 16 is placed between the fixed sleeve 2 and the furnace wall. A plurality of second bolts 17 are threadedly connected to the side of the fixed sleeve 2 close to the furnace wall. Each of the second bolts 17 penetrates the lining plate 16 and is threadedly connected to the furnace wall. When in use, the fixed sleeve 2 and the lining plate 16 are fixed to the outer side of the furnace wall by the second bolts 17.

[0028] A trigger slot 18 is provided at one end of the trigger rod 8 close to the swing rod 6, and a circular boss 19 is fixedly connected to one side of the swing rod 6. The circular boss 19 is placed in the trigger slot 18. When in use, the swing rod 6 rotates to make the circular boss 19 slide along the trigger slot 18, and at the same time, the trigger rod 8 slides along the fixed plate 7 and triggers the micro switch 9.

[0029] A first slide groove 20 is provided in the middle of each guide frame 3, a second slide groove 21 is provided in the middle of each positioning frame 4, and a third bolt 22 is provided in the middle of each positioning frame 4. The third bolt 22 is placed in the corresponding first slide groove 20 and second slide groove 21, and a fixing nut 23 is threadedly connected to the outer side of each third bolt 22. When in use, the positioning frame 4 is adjusted to an appropriate position, and then the third bolt 22 is passed through the first slide groove 20 and the second slide groove 21, and the fixing nut 23 is connected. At this time, the positioning frame 4 and the guide frame 3 are fixed in position.

[0030] Both ends of the push rod 1 are fixedly connected with metal discs 24. The metal disc 24 placed inside the furnace body is made of the same material as the push rod 1 and has multiple round holes to facilitate the rotation of the push rod 1. The metal disc 24 placed outside the furnace body corresponds to the travel switch 5. When in use, the push rod 1 is moved by pushing the metal disc 24 with round holes, and then the metal disc 24 outside the furnace body triggers the travel switch 5.

[0031] The working process of the utility model is as follows: during the closing process of the furnace door during use, the operator in the furnace pushes the metal disc 24 with a round hole to move the push rod 1, and then the metal disc 24 on the outside of the furnace body triggers the travel switch 5, and the sound and light alarm 10 emits sound and flashes to remind the operator outside the furnace, and at the same time the furnace door stops moving, and then the push rod 1 can be released, and the reset spring 15 resets the push rod 1. When the personnel in the furnace need to open the furnace door, the push rod 1 is rotated to make the first bolt 11 slide along the arc-shaped slide groove 12, and the swing rod 6 rotates synchronously, and the circular boss 19 slides along the trigger slide groove 18, and the trigger rod 8 slides along the fixed plate 7 and triggers the micro switch 9, and then the motor controlling the furnace door switch drives the furnace door to open, and the reset spring 15 can also reset the push rod 1 after the push rod 1 rotates.

[0032] The utility model has novel structure, ingenious conception and simple and convenient operation. The purpose of emergency stop door closing and reminding personnel is effectively achieved through the design, and the function of operating door opening is added.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A safety alarm device for furnace operation, characterized in that: include: A push rod (1), the middle portion of which penetrates the furnace wall; A fixed sleeve (2) is sleeved on the outside of the push rod (1) and is slidably connected to the push rod (1); the end of the fixed sleeve (2) is detachably connected to the furnace wall; There are two guide frames (3) which are symmetrically arranged, the guide frames (3) are fixedly connected to the furnace wall, and the guide frames (3) are L-shaped in appearance; Positioning frames (4), each of the positioning frames (4) being detachably connected to a corresponding guide frame (3); Travel switches (5), each of the travel switches (5) is fixedly connected to a corresponding positioning frame (4); The swing rod (6) is sleeved on the outside of the fixed sleeve (2), is rotationally connected to the fixed sleeve (2), and is slidingly connected to the push rod (1).

2. A safety alarm device for furnace operation according to claim 1, characterized in that: It also includes a fixing plate (7), which is placed between the two guide frames (3) and fixedly connected to the two guide frames (3); A trigger rod (8) slidably connected to the fixing plate (7); A micro switch (9) is fixedly connected to the fixing plate (7), and its trigger position is fixedly connected to the trigger rod (8); The sound and light alarm (10) is fixedly connected to the fixing plate (7) and electrically connected to the travel switch (5).

3. A safety alarm device for furnace operation according to claim 1, characterized in that: A first bolt (11) is threadedly connected to the middle of the swing rod (6); an arc-shaped slide groove (12) is provided on the fixed sleeve (2) at a position corresponding to the swing rod (6); a push slide groove (13) is provided on the outer side of the push rod (1); and the end of the first bolt (11) is placed in the arc-shaped slide groove (12) and the push slide groove (13).

4. A safety alarm device for furnace operation according to claim 1, characterized in that: The outer side of the push rod (1) is fixedly connected to a push plate (14), and the outer side of the push rod (1) is sleeved with a return spring (15), and the return spring (15) is fixedly connected to the push plate (14) and the fixed sleeve (2).

5. A safety alarm device for furnace operation according to claim 1, characterized in that: A lining plate (16) is sleeved on the outer side of the push rod (1), and a plurality of second bolts (17) are threadedly connected to the side of the fixed sleeve (2) close to the furnace wall, and each of the second bolts (17) penetrates the lining plate (16) and is threadedly connected to the furnace wall.

6. A safety alarm device for furnace operation according to claim 2, characterized in that: A triggering slot (18) is provided at one end of the triggering rod (8) close to the swinging rod (6), and a circular boss (19) is fixedly connected to one side of the swinging rod (6), and the circular boss (19) is placed in the triggering slot (18).

7. A safety alarm device for furnace operation according to claim 1, characterized in that: A first slide groove (20) is provided in the middle of each guide frame (3), a second slide groove (21) is provided in the middle of each positioning frame (4), a third bolt (22) is provided in the middle of each positioning frame (4), the third bolt (22) is placed in the corresponding first slide groove (20) and second slide groove (21), and a fixing nut (23) is threadedly connected to the outer side of each third bolt (22).

8. A safety alarm device for furnace operation according to claim 1, characterized in that: Both ends of the push rod (1) are fixedly connected with metal discs (24).

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