Heat treatment box-type furnace

Abstract

The utility model relates to a heat treatment box-type furnace which comprises a box-type furnace main body and a box-type furnace top, a lifting knob is arranged on the right lower side of the box-type furnace main body, the length and the width of the box-type furnace top are larger than those of the box-type furnace main body, the front face of the box-type furnace main body is divided into an upper part and a lower part, the upper part is a fixed door, and the lower part is a box door. Rectangular heating structures are arranged on the left side, the right side and the lower side of the box door, the sum of the lengths of the left-side heating structure, the right-side heating structure and the box door is consistent with the length of the fixed door, and a door opening button and a door closing button are arranged on the right-side heating structure; and a filtering structure is arranged on the right side of the top of the box-type furnace. Dust adsorbed by the exhaust holes due to cooling is filtered by adopting the filtering structure, the dust is prevented from entering the box-type furnace to be accumulated and blocked to influence the service life and efficiency of the box-type furnace, and the filtering structure is replaced more simply and easily by adopting a pull handle pulling mode. And through mutual cooperation of the lifting interlayer plate and the lifting knob, the heat treatment requirements of objects with different heights can be met.

Description

Technical Field

[0001] This utility model belongs to the field of box furnace technology, specifically relating to a heat treatment box furnace. Background Technology

[0002] A box furnace is a heating device with a separate furnace chamber and a separate door. It heats the material using the principle of hot air circulation. The working principle of a box furnace can be divided into three steps: heating, circulation, and exhaust. Box furnaces are practical heating devices with many advantages, including wide applicability, significant effects, and cost savings. However, the exhaust system of a box furnace is generally located at the top. When not in use, the exhaust vents are prone to accumulating dust and clogging the exhaust holes. Cleaning the exhaust holes is often difficult and inconvenient. Furthermore, the inside of the box furnace door may deform over time, and the internal temperature of the door may become excessively high, posing a risk of burns if the door is opened manually.

[0003] Chinese patent CN218561536U discloses a high-temperature box furnace for heat treatment, including a box body, heating wires fixed to the inner wall of the box body, a pad plate set on the inner wall of the box body, a guide frame fixed to the outer wall of the box body opening, a guide groove opened on the inner wall of the guide frame, and a box door inserted into the guide groove; a lifting assembly including a support plate symmetrically fixed to the top of the box body, a connecting rod rotatably connected to the inner wall of the support plate at both ends, a winding wheel symmetrically fixed to the connecting rod, a steel wire rope with one end fixed to the winding wheel and the other end fixed to the bottom of the box door, a first pulley fixed to one end of the connecting rod, a motor set at the top of the box body, a second pulley fixed to the motor, and a transmission belt wound around the first pulley and the second pulley. This invention can replace manual opening of the high-temperature box furnace door, avoiding skin burns from high temperatures. However, this invention has limited space utilization, does not provide a solution for cleaning the exhaust port, and the steel wire ropes on both sides of the door may become damaged with long-term use, increasing maintenance costs.

[0004] In summary, existing technologies suffer from several drawbacks: blocked exhaust ports affect the lifespan and efficiency of the box furnace; exhaust port cleaning is inconvenient; the double steel wires used to lift the box furnace door are prone to damage; and any damage to the steel wire rope requires immediate repair. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a heat treatment box furnace that can solve the problems of existing technologies, such as exhaust port blockage affecting the lifespan and efficiency of the box furnace, inconvenient exhaust port cleaning, easy damage to the box furnace door when suspended by double steel wires, and the need for immediate repair for any damaged steel wire rope. To solve the above technical problems, this utility model provides a heat treatment box furnace, comprising a box furnace body and a box furnace top. The box furnace body has a lifting knob on its lower right side. The length and width of the box furnace top are greater than the length and width of the box furnace body. The front of the box furnace body is divided into two parts: an upper part is a fixed door, and a lower part is a box door. The box door has rectangular heating structures on its left, right, and lower sides. The sum of the lengths of the left and right heating structures and the box door is the same as the length of the fixed door. The right heating structure has an open and close button. The box furnace top has an exhaust port, and the right side of the box furnace top has a filter structure.

[0007] Optionally, the filter structure consists of a handle, a sealing block, a sealing rubber block, a structural frame, and a filter screen. The filter screen is located inside the structural frame. The length of the structural frame is less than the length of the sealing rubber block, and the length of the sealing rubber block is less than the length of the sealing block. The length of the sealing block is the same as the width of the top of the box furnace. There is a groove on the right side of the top of the box furnace. The height of the groove is the same as the width of the sealing block, and the width of the groove is the same as the height of the sealing block. The handle is located on the outside of the sealing block.

[0008] Optionally, the main body of the box furnace has a fixed sandwich panel and a lifting sandwich panel inside. The lifting sandwich panel is connected to the lifting knob by steel wires on the rollers on both sides. The upper part of the main body of the box furnace has an inner top. The distance between the inner top and the top of the box furnace is the same as the height of the top of the box furnace.

[0009] Optionally, the fixed door has a through block adapted to the box door inside, and the front of the top of the box furnace has a rotating shaft, a wire loop, a wire rope and a control shaft. The control shaft is on the left and right sides of the front part of the top of the box furnace, and the rotating shaft is in the middle. The wire loop is on the outside of the rotating shaft, and each section of the wire loop is connected to the box door through the wire rope.

[0010] Optionally, the steel wire loops and steel wire ropes are five or more and evenly distributed.

[0011] Optionally, the control shaft is connected to a motor.

[0012] Optionally, both the main body and the top of the box furnace are cuboids, and the height of the main body is greater than 6 times the height of the top of the box furnace.

[0013] By adopting the above technical solution, this case uses a lifting mezzanine plate with pulleys on both sides. The pulleys are connected to fixed pulleys via steel wire ropes. The other side of the fixed pulley is connected to a lifting knob. By rotating the lifting knob, the lifting of the mezzanine plate is controlled. Rotating clockwise retracts the steel wire rope. The lifting of the mezzanine plate can accommodate items of different heights for heat treatment. If the item is too high, rotate clockwise; if the item is not high enough, rotate counterclockwise to adjust to the appropriate height. The filter structure's sealing blocks and grooves fit together perfectly, ensuring a more secure seal. Inside the sealing blocks are sealing rubber blocks that prevent external contaminants from penetrating and affecting the furnace. The pull handle makes replacing the filter structure simple and easy. The furnace also features an engine on top, connected to a control shaft. When the door opening button is pressed, the control shaft rotates the rotating shaft clockwise, winding a steel wire rope into the coil to open the door. Workers do not need to directly touch the door, making operation safer. There are five or more evenly distributed steel wire coils and ropes; damage to one or two will not affect the furnace's operation, extending its lifespan.

[0014] In summary, this utility model has at least one of the following beneficial effects:

[0015] This utility model uses a handle, a sealing block, a sealing rubber block, a structural frame, and a filter screen to filter the dust adsorbed by the exhaust port due to cooling, preventing it from entering the box furnace and accumulating and blocking it, thus affecting the life and efficiency of the box furnace. The pull-out method makes it easier to replace the filter structure.

[0016] This invention, through the cooperation of a lifting interlayer plate and a lifting knob, can meet the heat treatment needs of items of different heights. For items of moderate height, both the fixed interlayer plate and the lifting interlayer plate can be used to place the items, thereby improving the efficiency of heat treatment.

[0017] This invention controls the rotation direction of the control shaft by using an open and close door button, thereby controlling the rotation direction of the rotating shaft. Combined with wire coils and wire ropes, it achieves the function of opening and closing the door. Workers do not need to directly contact the box door, making operation safer. There are more than five wire coils and wire ropes, which are evenly distributed. If one or two are damaged, it will not affect the operation of the box furnace, thus extending its service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is a schematic diagram showing the closed state of the door of a heat treatment box furnace according to this utility model;

[0020] Figure 2 This is a schematic diagram showing the open state of the door of a heat treatment box furnace according to this utility model.

[0021] Figure 3 This is a schematic diagram of the exhaust port filter screen structure of a heat treatment box furnace according to the present invention.

[0022] List of symbols in the attached diagram: 1. Main body of the box furnace; 2. Top of the box furnace; 3. Exhaust port; 4. Filter structure; 401. Handle; 402. Sealing block; 403. Sealing rubber block; 404. Structural frame; 405. Filter screen; 5. Fixed door; 6. Box door; 7. Lifting knob; 8. Door opening button; 9. Door closing button; 10. Heating structure; 11. Fixed sandwich panel; 12. Lifting sandwich panel; 13. Rotating shaft; 14. Steel wire loop; 15. Steel wire rope; 16. Control shaft; 17. Inner top of the box furnace. Implementation

[0023] The following is in conjunction with the appendix Figure 1-3 This utility model will be described in further detail below.

[0024] Example 1, refer to Figure 1-3 In this embodiment, to address the existing problems of blocked exhaust ports affecting the lifespan and efficiency of the box furnace, inconvenient exhaust port cleaning, easy damage to the box furnace door when suspended by double steel cables, and the need for immediate repair of any damaged steel cable, this utility model discloses a heat treatment box furnace, including a box furnace body 1 and a box furnace top 2. The box furnace body 1 has a lifting knob 7 on the lower right side. The length and width of the box furnace top 2 are greater than the length and width of the box furnace body 1. The front of the box furnace body 1 is divided into two parts: the upper part is a fixed door 5, and the lower part is a box door 6. The box door 6 has rectangular heating structures 10 on the left, right, and lower sides. The sum of the lengths of the left heating structure 10, the right heating structure 10, and the box door 6 is the same as the length of the fixed door 5. The right heating structure 10 has an open button 8 and a close button 9. The box furnace top 2 has an exhaust port 3 at the top and a filter structure 4 on the right side. Both the main body 1 and the top 2 of the box furnace are cuboids, and the height of the main body 1 is more than 6 times the height of the top 2.

[0025] The filter structure 4 consists of a handle 401, a sealing block 402, a sealing rubber block 403, a structural frame 404, and a filter screen 405. The filter screen 405 is inside the structural frame 404. The length of the structural frame 404 is less than the length of the sealing rubber block 403. The length of the sealing rubber block 403 is less than the length of the sealing block 402. The length of the sealing block 402 is the same as the width of the top 2 of the box furnace. There is a groove on the right side of the top 2 of the box furnace. The height of the groove is the same as the width of the sealing block 402. The width of the groove is the same as the height of the sealing block 402. The handle 401 is on the outside of the sealing block 402.

[0026] The main body 1 of the box furnace has a fixed interlayer plate 11 and a lifting interlayer plate 12 inside. The lifting interlayer plate 12 is controlled by the lifting knob 7 to move through the internal sliding groove and the rollers that are adapted to it. The highest point that the lifting interlayer plate 12 can reach is in contact with the inner top 17 of the box furnace. The distance between the inner top 17 of the box furnace and the top 2 of the box furnace is the same as the height of the top 2 of the box furnace.

[0027] The fixed door 5 has a connecting block inside that matches the box door 6. The front side of the top 2 of the box furnace has a rotating shaft 13, wire coils 14, wire ropes 15, and a control shaft 16. The control shaft 16 is located on the left and right sides of the front part of the top 2 of the box furnace, with the rotating shaft 13 in the middle. The wire coils 14 are located outside the rotating shaft 13. Each section of the wire coil 14 is connected to the box door 6 via a wire rope 15. There are more than five wire coils 14 and wire ropes 15, evenly distributed.

[0028] Control shaft 16 is connected to the motor.

[0029] Specific implementation principle: When using this utility model, first press the door opening button 8, the engine start control shaft 16 rotates clockwise, driving the rotating shaft 13 to rotate clockwise. The steel wire rope 15 is wound around the rotating shaft 13 through the steel wire loop 14. The other end of the steel wire rope 15 is connected to the box door 6, causing the box door 6 to move upward, thereby achieving the effect of opening the door. Place the items to be heat-treated into the fixed interlayer plate 11. If it cannot be placed in, rotate the lifting knob 7 clockwise. The steel wire rope 15 drives the pulley of the lifting interlayer plate 12 to move upward through the fixed pulley until the items can be placed and then stop rotating. Press the door closing button 9 to close this utility model. Press the start button to start working. Similarly, it is similar to take out the heat-treated items. When too much dust accumulates in the exhaust vent, pull the handle 401 to separate the filter structure 4 from the top 2 of the box furnace for easy cleaning or replacement.

[0030] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heat treatment box furnace, characterized in that: The furnace includes a box furnace body (1) and a box furnace top (2). The box furnace body (1) has a lifting knob (7) on the lower right side. The length and width of the box furnace top (2) are greater than the length and width of the box furnace body (1). The front of the box furnace body (1) is divided into two parts, with the upper part being a fixed door (5) and the lower part being a box door (6). The box door (6) has rectangular heating structures (10) on the left, right, and lower sides. The sum of the lengths of the heating structures (10) on the left and right sides and the box door (6) is the same as the length of the fixed door (5). The heating structure (10) on the right side has an open button (8) and a close button (9). The box furnace top (2) has an exhaust port (3) on the top and a filter structure (4) on the right side of the box furnace top (2).

2. The heat treatment box furnace according to claim 1, characterized in that, The filter structure (4) consists of a handle (401), a blocking block (402), a blocking rubber block (403), a structural frame (404), and a filter screen (405). The filter screen (405) is inside the structural frame (404). The length of the structural frame (404) is less than the length of the blocking rubber block (403). The length of the blocking rubber block (403) is less than the length of the blocking block (402). The length of the blocking block (402) is the same as the width of the top (2) of the box furnace. There is a groove on the right side of the top (2) of the box furnace. The height of the groove is the same as the width of the blocking block (402). The width of the groove is the same as the height of the blocking block (402). The handle (401) is outside the blocking block (402).

3. A heat treatment box furnace according to claim 1, characterized in that, The box furnace body (1) has a fixed sandwich panel (11) and a lifting sandwich panel (12) inside. The lifting sandwich panel (12) is connected to the lifting knob (7) by steel wires on the rollers on both sides. The box furnace body (1) has a box furnace inner top (17) on the top. The distance between the box furnace inner top (17) and the box furnace top (2) is the same as the height of the box furnace top (2).

4. A heat treatment box furnace according to claim 1, characterized in that, The fixed door (5) has a through block that matches the box door (6) inside. The front side of the top (2) of the box furnace has a rotating shaft (13), a wire loop (14), a wire rope (15) and a control shaft (16). The control shaft (16) is on the left and right sides of the front part of the top (2) of the box furnace, with the rotating shaft (13) in the middle. The wire loop (14) is on the outside of the rotating shaft (13). Each section of the wire loop (14) is connected to the box door (6) through the wire rope (15).

5. A heat treatment box furnace according to claim 4, characterized in that, The steel wire loops (14) and steel wire ropes (15) are five in number and evenly distributed.

6. A heat treatment box furnace according to claim 4, characterized in that, The control shaft (16) is connected to the motor.

7. A heat treatment box furnace according to claim 1, characterized in that, Both the main body (1) and the top (2) of the box furnace are cuboids, and the height of the main body (1) is more than 6 times the height of the top (2).

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