A horizontal tempering furnace for bolt fasteners

Abstract

This invention relates to the field of wind turbine bolt manufacturing technology, and more particularly to a horizontal tempering furnace for bolt fasteners. It includes a furnace body, with a sealing door rotatably connected to the side of the furnace body near the outlet. An inner cylinder and circumferentially evenly distributed heat radiation rods are fixedly connected to the furnace body. The inner cylinder is located inside the circumferentially evenly distributed heat radiation rods. A mounting plate is rotatably connected to the furnace body, and an electric slide rail is fixedly connected to the mounting plate. An electric slider on the electric slide rail is fixedly connected to a sliding frame. A heat-insulating glass plate is slidably connected to the sliding frame, and an elastic element is installed between the two. The heat-insulating glass plate is used to seal the outlet of the furnace body. This invention, by sealing the furnace body outlet during bolt loading and unloading with the heat-insulating glass plate, reduces the amount of high-temperature gas leaking out of the furnace body during bolt loading and unloading, and simultaneously reduces the probability of external water vapor entering the furnace body during gas exchange between the inside and outside of the furnace.

Description

Technical Field

[0001] This invention relates to the field of wind power bolt manufacturing technology, and in particular to a horizontal tempering furnace for bolt fasteners. Background Technology

[0002] Horizontal tempering furnaces are commonly used steel structure tempering devices, frequently applied in the manufacturing of large bolts for wind power applications. The wind power sector has extremely high quality requirements for large bolts, thus necessitating high temperatures for the bolt tempering process. The furnace temperature during tempering is typically around 500℃. When using a horizontal tempering furnace to temper bolts, after each batch of bolts is tempered, the furnace door is opened for loading and unloading operations, causing the high temperature inside the furnace to rapidly escape and exchange heat with the outside air. However, existing tempering furnaces rely on workers using long poles, etc. The simplified loading and unloading process involves taking out bolts in groups one by one and then placing them back into the tempering furnace in the same way. This results in a long loading and unloading time in the existing tempering furnace, a rapid rate of temperature loss during the loading and unloading interval, and a large total heat loss, leading to energy waste. Furthermore, water vapor in the air can easily enter the tempering furnace in large quantities during the heat exchange process. If the water vapor content in the furnace is high during the tempering process, an additional vacuuming process is required to remove the water vapor. Otherwise, the bolt surface may oxidize more rapidly during the tempering process, potentially forming an oxide layer with a thickness exceeding the standard. Summary of the Invention

[0003] In order to overcome the shortcomings of existing tempering furnaces, such as long loading and unloading time, large heat loss, and easy entry of a large amount of water vapor into the furnace, this invention provides a horizontal tempering furnace for bolt fasteners.

[0004] The technical solution is as follows: A horizontal tempering furnace for bolt fasteners includes a furnace body. A sealing door is rotatably connected to the side of the furnace body near the outlet. An inner cylinder and circumferentially evenly distributed heat radiation rods are fixedly connected to the furnace body. The inner cylinder is located inside the circumferentially evenly distributed heat radiation rods. A mounting plate is rotatably connected to the furnace body. An electric slide rail is fixedly connected to the mounting plate. An electric slider on the electric slide rail is fixedly connected to a sliding frame. A heat-insulating glass plate is slidably connected to the sliding frame, and an elastic element is installed between the two. The heat-insulating glass plate is used to block the outlet of the furnace body. The heat-insulating glass plate is provided with a first through hole and a second through hole. A support rod is fixedly connected to the sliding frame. The support rod passes through the first through hole. A mounting frame is placed on the support rod. The mounting frame is used to hold bolts. Rectangularly distributed fixing piles are fixedly connected inside the furnace body. The fixing piles are used to support the mounting frame. An adjustment mechanism for adjusting the mounting height of the mounting frame is provided on the sliding frame.

[0005] As an improvement to the above solution, the adjustment mechanism includes a first electric push rod, which is fixedly connected to the sliding frame. A second electric push rod is fixedly connected to the telescopic end of the first electric push rod, and a pushing claw is fixedly connected to the telescopic end of the second electric push rod. The pushing claw passes through the first through hole and is used to lock the movement of the mounting frame. The fixing pile is fixedly connected to longitudinally spaced support blocks, which are used to support the mounting frame. The support rod is provided with a holding part and an inclined part.

[0006] As an improvement to the above solution, the support block is fixedly connected to an obstruction protrusion, which is used to limit the position of the mounting frame.

[0007] As an improvement to the above solution, the heat-insulating glass plate is slidably connected to a first blocking member located at the first through hole, and the heat-insulating glass plate is slidably connected to a second blocking member located at the second through hole. The first blocking member and the second blocking member are used to reduce the flow area of ​​the first through hole and the second through hole.

[0008] As an improvement to the above solution, the support rod is provided with a support portion, which provides support force to the support rod when it contacts the inner cylinder and the mounting plate.

[0009] As an improvement to the above solution, the furnace body is fixed with symmetrically distributed side fixing plates on the side near the outlet. The symmetrically distributed side fixing plates are jointly fixed with an upper fixing plate. The upper fixing plate is rotatably connected to a barrier curtain. The barrier curtain is composed of longitudinally distributed baffles. Adjacent baffles are rotatably connected. The uppermost baffle is rotatably connected to the upper fixing plate. The heat-insulating glass plate is fixed with a push rod. The push rod is used to contact the mounting frame. The push rod, the mounting frame, and the support rod move the baffle by pressing the baffle.

[0010] As an improvement to the above solution, there are gaps at the rotatable connection points of two adjacent shielding plates and at the rotatable connection point between the uppermost shielding plate and the upper fixed plate. There are also gaps between two adjacent shielding plates, between the shielding plate and the side fixed plate, and between the upper fixed plate and the adjacent shielding plates, to reserve the gaps required for the shielding plates to expand due to heat.

[0011] As an improvement to the above solution, a gas circulation system is provided inside the furnace body. The furnace body is equipped with a gas supply head and a gas extraction head, both of which are connected to the gas circulation system. The gas supply head is used to inject protective gas into the furnace body.

[0012] As an improvement to the above solution, an air intake head is fixedly connected to the furnace body, the air intake head is connected to the gas circulation system, and the air intake head is located between the barrier curtain and the sealing door.

[0013] As an improvement to the above solution, the gas supply head is located on the side of the furnace body near the barrier curtain.

[0014] Compared with existing devices, the present invention has at least the following advantages: The present invention uses a heat-insulating glass plate to seal the furnace outlet during the loading and unloading of bolts, thereby reducing the amount of high-temperature gas leaking out of the furnace during the loading and unloading of bolts. At the same time, it reduces the probability of external water vapor entering the furnace during the gas exchange process between the inside and outside of the furnace. While saving resources and improving the resource utilization rate of the device, it also reduces the probability of water vapor affecting the bolt tempering process and improves the yield of bolts produced by the device.

[0015] This invention proposes a convenient way to place bolts in the furnace body by using a support rod and a pushing claw to place bolts in a suitable position inside the furnace body while sealing the furnace outlet. This shortens the time required for the sealing door to be opened once when loading and unloading bolts, thereby increasing the utilization rate of heat resources and improving the continuity of the process.

[0016] This invention adds a barrier curtain to separate the sealed door and the inner cylinder, thereby separating the water vapor condensed on the sealed door from the inner cylinder. The water vapor between the barrier curtain and the sealed door is removed by the suction head, thus reducing the probability of water vapor entering the inner cylinder. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the sealing door, inner cylinder, and heat radiation rod of the present invention;

[0019] Figure 3 This is a cross-sectional view of the furnace body of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the sliding frame and the heat-insulating glass plate of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the furnace body and the heat-insulating glass plate of the present invention when they are bonded together.

[0022] Figure 6 This is a cross-sectional view of the heat-insulating glass panel of the present invention;

[0023] Figure 7 This is a three-dimensional structural diagram of the fixed pile and supporting block of the present invention;

[0024] Figure 8 This is a three-dimensional structural diagram of the holding part, the inclined part, and the supporting part of the present invention;

[0025] Figure 9This is a three-dimensional structural diagram of the fixing plate and the shielding plate of the present invention;

[0026] Figure 10 For the present invention Figure 9 Enlarged view of point A in the middle.

[0027] The following are the labels in the diagram: 1. Furnace body, 2. Sealed door, 3. Inner cylinder, 4. Heat radiation rod, 5. Mounting plate, 6. Electric slide rail, 7. Sliding frame, 8. Insulated glass plate, 81. First through hole, 82. Second through hole, 83. Push rod, 10. Support rod, 101. Container, 102. Inclined part, 103. Support part, 11. Placement frame, 12. Fixing stake, 13. Support block, 131. Obstruction protrusion, 14. First electric push rod, 15. Second electric push rod, 16. Push claw, 17. First shield, 18. Second shield, 19. Side fixing plate, 20. Top fixing plate, 21. Shielding plate, 22. Suction head, 23. Gas supply head, 231. Exhaust head. Detailed Implementation

[0028] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0029] Example 1: This example proposes a horizontal tempering furnace for bolt fasteners. Compared with existing devices, it has the function of increasing the material loading and unloading speed and reducing the temperature loss rate inside the tempering furnace when loading and unloading materials.

[0030] Reference Figures 1-6 The furnace includes a furnace body 1, with its outlet located at its front. A sealing door 2 is rotatably connected to the left side of the front of the furnace body 1. An inner cylinder 3 and circumferentially evenly distributed heat radiation rods 4 are fixedly connected to the furnace body 1. The circumferentially evenly distributed heat radiation rods 4 are located between the inner cylinder 3 and the furnace body 1 (see reference). Figure 2 The inner cylinder 3 is used to make the temperature radiated into the furnace by the heat radiation rod 4 more uniform. The right side of the front of the furnace body 1 is rotatably connected to the mounting plate 5. The mounting plate 5 is fixed to the electric slide rail 6. The electric slide rail 6 is fixed to the electric slider and the sliding frame 7. The sliding frame 7 is slidably connected to the heat insulation glass plate 8 through the support rod, and an elastic element is installed between the two (see reference). Figure 4 The elastic element is a tension spring, and the heat-insulating glass plate 8 is used to cover the outlet of the furnace body 1 (see reference). Figure 5 To reduce the rate at which heat escapes, the lower part of the heat-insulating glass panel 8 is provided with a first through hole 81 (see reference). Figure 6The upper part of the heat-insulating glass plate 8 is provided with a second through hole 82. The lower part of the sliding frame 7 is fixedly connected with a support rod 10. The support rod 10 passes through the first through hole 81. A mounting frame 11 is placed on the support rod 10. The mounting frame 11 is a fixed steel structure frame. The mounting frame 11 is used to hold groups of bolts. Four rectangular fixed piles 12 are fixedly connected inside the furnace body 1. The fixed piles 12 are used to support the mounting frame 11. The sliding frame 7 is provided with an adjustment mechanism for adjusting the mounting height of the mounting frame 11.

[0031] The above setup allows workers to place bolts on the mounting frame 11 in advance, and then place the mounting frame 11 on the four fixed posts 12 inside the furnace body 1 using the support rod 10. This achieves the purpose of quickly placing bolts inside the furnace body 1. During the placement process, the outlet of the furnace body 1 is blocked by the heat-insulating glass plate 8. Even if the bolts slip or shake during placement, workers can insert a long rod into the furnace body 1 through the second through hole 82 and use the long rod to adjust the position of the bolts. During the adjustment of the bolt position, the heat-insulating glass plate 8 blocks the outlet of the furnace body 1, reducing the speed of heat transfer to the outside.

[0032] Reference Figures 4-8 The adjustment mechanism includes a first electric push rod 14, which is fixedly connected to the upper part of the sliding frame 7. The first electric push rod 14 is used to drive the components on it to move back and forth. A second electric push rod 15 is fixedly connected to the telescopic end of the first electric push rod 14. A push claw 16 is fixedly connected to the telescopic end of the second electric push rod 15. The second electric push rod 15 is used to drive the push claw 16 to move up and down. The push claw 16 passes through the first through hole 81 (see reference). Figure 5 The claw 16 moves vertically to lock the mounting frame 11 horizontally. By limiting the horizontal movement of the mounting frame 11, the mounting frame 11 is moved. The fixing pile 12 is fixed with longitudinally spaced support blocks 13 (see reference). Figure 6 and Figure 7 The support block 13 is used to support the mounting frame 11. The support rod 10 is provided with a holding part 101 and an inclined part 102. The horizontal height of the holding part 101 is higher than the horizontal height of the top of the fixed pile 12. The holding part 101 is used to horizontally support the mounting frame 11, and the inclined part 102 is used to cooperate with the push claw 16 to adjust the height of the mounting frame 11.

[0033] The above configuration allows the mounting bracket 11 to move together with the support rod 10 and the pusher claw 16 when the support rod 10 and the pusher claw 16 push the mounting bracket 11 into the furnace. When the support rod 10 stops moving, the mounting bracket 11 moves along with the support rod 10 and the pusher claw 16. Figure 5 and Figure 8Taking the perspective of the furnace as an example, the push claw 16 drives the placement frame 11 to move to the left. The placement frame 11 moves from the holding part 101 to the inclined part 102. At this time, the placement frame 11 slides down along the inclined part 102 during the movement. The telescopic end of the second electric push rod 15 drives the push claw 16 to move down with the placement frame 11, so that the left and right ends of the placement frame 11 are kept horizontal. This adjusts the height of the placement frame 11. After the adjustment is completed, the support rod 10 and the push claw 16 move into the furnace together and place the placement frame 11 on the support block 13 of the four fixed piles 12.

[0034] Reference Figure 6 and Figure 7 The front side of the support block 13 is fixed with an obstruction protrusion 131. The obstruction protrusion 131 is used to limit the position of the mounting frame 11 and prevent the mounting frame 11 from sliding relative to the support blocks 13 after it is placed on the four support blocks 13.

[0035] Reference Figure 6 The heat-insulating glass plate 8 is slidably connected to a first blocking member 17 located at the first through hole 81. The first blocking member 17 is provided with a hole for the push claw 16 to pass through. The push claw 16 pushes the first blocking member 17 to move up and down together, reducing the flow area of ​​the first through hole 81, thereby reducing the area of ​​the heat exchange channel between the hot air in the furnace and the outside gas. The heat-insulating glass plate 8 is slidably connected to a second blocking member 18 located at the second through hole 82. The second blocking member 18 is used to reduce the flow area of ​​the second through hole 82, and at the same time, it allows the straight rod that enters the furnace body 1 through the second through hole 82 to drive the second blocking member 18 to slide in the second through hole 82, increasing the movement range of the straight rod that enters the furnace body 1.

[0036] Reference Figure 8 A support part 103 is provided on the side of the support rod 10 away from the adjacent heat insulation glass plate 8. When the support part 103 is outside the furnace body 1, the support part 103 abuts against the mounting plate 5, thereby supporting the support rod 10 and the mounting frame 11. When the support part 103 extends into the furnace body 1, the support part 103 abuts against the inner cylinder 3, and is used to support the support rod 10 and the mounting frame 11.

[0037] The working principle of the above settings is as follows:

[0038] When workers use this device to temper bolts, they place the bolts in groups on the external mounting frame 11, then open the sealing door 2 and place the mounting plate 5 from... Figure 1The rotating mechanism begins until the heat-insulating glass plate 8 is aligned with the furnace body 1. The mounting plate 5 then stops rotating. The sliding frame 7, heat-insulating glass plate 8, support rod 10, and mounting bracket 11 are all located at the front of the furnace body 1. The operator activates the electric slide rail 6, causing the electric slider on the electric slide rail 6 to move the sliding frame 7, heat-insulating glass plate 8, support rod 10, mounting bracket 11, first electric push rod 14, second electric push rod 15, and push claw 16 backward together. The support rod 10, mounting bracket 11, and push claw 16 gradually insert into the inner cylinder 3. The support part 103 gradually moves from a position abutting against the mounting plate 5 to a position abutting against the inner cylinder 3. This process is repeated for the support rod 10 and mounting bracket 11. The mounting frame 11 provides support. When the mounting frame 11 is fully inserted into the furnace body 1 and the heat insulation glass plate 8 is in contact with the furnace body 1, the heat insulation glass plate 8 blocks the outlet of the furnace body 1 (if a bolt tempering process has already been carried out, the gas temperature inside the furnace is high, so the heat insulation glass plate 8 blocks the outlet of the furnace body 1 to reduce the probability of hot gas escaping outward). The mounting frame 11 is close to the two fixed piles 12 on the rear side. At this time, the staff turns off the electric slide rail 6, and the sliding frame 7 and its components stop moving. The staff prepares to adjust the height of the mounting frame 11 and its bolts to ensure that the bolts are located in the center area of ​​the inner cylinder 3 during the tempering process, thereby improving the uniformity of the bolts being heated.

[0039] When adjusting the height of the mounting frame 11, the operator first controls the extension end of the first electric push rod 14 to extend backward. This extension end of the first electric push rod 14 drives the second electric push rod 15, the pushing claw 16, and the mounting frame 11 to extend backward together. When the rear side of the mounting frame 11 moves from the holding section 101 to the inclined section 102, the operator, while controlling the extension end of the first electric push rod 14 to extend backward, simultaneously controls the extension end of the second electric push rod 15 to extend downward. This extension end of the second electric push rod 15 drives the pushing claw 16 to move downward, and the mounting frame 11 slides backward and downward along the inclined section 102. As the pushing claw 16 pushes the mounting frame 11 backward, it also moves downward along with the mounting frame 11, keeping the mounting frame 11 horizontal. When the operator adjusts the position of the mounting frame 11 so that its upper bolt is located in the middle of the furnace body 1, the operator closes the... Close the first electric push rod 14 and the second electric push rod 15. Then, the staff continues to start the electric slide rail 6, so that the sliding frame 7 drives the placement frame 11 to continue to move backward until the placement frame 11 moves into the support block 13 on the four fixed piles 12. The staff closes the electric slide rail 6. At this time, if the bolt shifts position due to vibration or other reasons during the movement, the staff inserts a straight rod into the furnace body 1 through the first through hole 81 and moves the bolt position by the straight rod, so as to keep the bolt position always in a relatively uniform state. If the gas temperature inside the furnace is high, during the above adjustment process, because the heat insulation glass plate 8 always blocks the outlet of the furnace body 1, the hot gas inside the furnace body 1 can only flow out through the first through hole 81 and the second through hole 82. Therefore, the heat loss rate is slow, and most of the water vapor is blocked on the outside of the heat insulation glass plate 8 and is difficult to enter the furnace body 1.

[0040] After the worker moves the mounting frame 11 onto the support blocks 13 on the four fixed piles 12, the worker controls the telescopic end of the second electric push rod 15 to drive the adjacent parts to continue moving downward, so that the push claw 16 moves downward relative to the mounting frame 11. The push claw 16 releases the limit on the mounting frame 11. Then the worker starts the electric slide rail 6, so that the sliding frame 7 drives the adjacent parts to move forward. After the support rod 10 is completely removed from the furnace body 1, the worker pushes the mounting plate 5 to rotate and reset, closes the sealing door 2, and starts the heat radiation rod 4 to uniformly temper the bolts.

[0041] After the tempering process is completed, the staff shut off the heat radiation rod 4 and restored the furnace body 1 to normal pressure through the existing pressure relief structure. Then, the sealing door 2 was opened, and the mounting bracket 11 and its bolts were removed from the furnace body 1 in the reverse order of the above-mentioned work process. The staff then closed the sealing door 2 and reinstalled the bolts into the furnace body 1 in the same manner as described above. Because the furnace body 1 is in contact with the outside world for a short time during the loading and unloading process, the temperature loss from the furnace body 1 is minimal. This not only reduces the rate of temperature loss but also reduces the probability of water vapor entering the furnace body 1 by intercepting surrounding water vapor through the heat insulation glass plate 8.

[0042] Example 2: Compared with the horizontal tempering furnace for bolt fasteners proposed in Example 1, it also has the function of reducing the water vapor condensed on the sealing door 2 due to high temperature heat exchange from entering the furnace body 1.

[0043] Reference Figure 5 The furnace body 1 is equipped with a gas circulation system (an existing device, usually consisting of a vacuum pump, gas pipeline, filter, pressure relief valve, etc.). The furnace body 1 is equipped with a gas supply head 23 and a gas extraction head 231, both of which are connected to the gas circulation system. The gas supply head 23 is used to inject protective gas into the furnace body 1.

[0044] The above setup enables the gas circulation system to extract air from the furnace body 1 through the extraction head 231 and inject protective gas through the supply head 23, filling the space inside the furnace body 1 with protective gas. This process promotes a more uniform temperature inside the furnace body 1 through gas circulation and reduces the water vapor content in the furnace body 1 through the existing filtration device. During the feeding and unloading process inside the furnace body 1, protective gas can be injected into the outlet of the furnace body 1 through the supply head 23, causing the protective gas to carry the water vapor at the outlet of the furnace body 1 outward, thereby reducing the probability of water vapor entering the furnace body 1. This method, combined with the function of the heat insulation glass plate 8 (i.e., the gas is injected only when the heat insulation glass plate 8 blocks the furnace body 1), can reduce the transfer of internal and external temperatures, reduce the probability of water vapor entering the inner cylinder 3, and save the amount of protective gas used.

[0045] Reference Figures 2-4 , Figure 9 and Figure 10 Two symmetrically distributed side fixing plates 19 are fixed to the front side of the furnace body 1. The two side fixing plates 19 and the furnace body 1 are jointly fixed to an upper fixing plate 20. The upper fixing plate 20 is rotatably connected to a barrier curtain (see reference). Figure 9As shown), the barrier curtain consists of four longitudinally distributed baffles 21. Adjacent baffles 21 are rotatably connected, and the uppermost baffle 21 is rotatably connected to the upper fixed plate 20. The heat-insulating glass plate 8 is fixedly connected to a push rod 83, which is used to contact the mounting frame 11. The push rod 83, the mounting frame 11, and the support rod 10 press the baffles 21, causing the baffles 21 to be lifted towards the furnace body 1 (see reference). Figure 4 ).

[0046] The above setup enables the barrier curtain to block the front of the furnace body 1 when the sealing door 2 is open and the support rod 10 has not entered the furnace body 1, thereby reducing the possibility of hot air escaping from the furnace body 1 and water vapor from the outside of the furnace body 1 penetrating inward. The barrier curtain and the heat-insulating glass plate 8 crosswise block the furnace body 1, further shortening the time when the furnace body 1 is directly connected to the outside.

[0047] Reference Figure 9 and Figure 10 There are gaps at the rotatable connection points of two adjacent baffles 21 and at the rotatable connection points of the uppermost baffle 21 and the upper fixed plate 20. There are also gaps between two adjacent baffles 21, between the upper fixed plate 20 and the adjacent baffles 21, and between the baffles 21 and the side fixed plate 19. These gaps are reserved for the baffles 21 to expand due to heat, ensuring that even if the baffles 21 expand due to heat, the two baffles 21 will not be unable to rotate relative to each other due to the expansion.

[0048] Reference Figure 5 and Figure 6 A suction head 22 is fixedly connected inside the furnace body 1. The suction head 22 is connected to the gas circulation system. The suction head 22 is located between the barrier curtain and the sealing door 2. After the sealing door 2 is closed, the suction head 22 draws out the air between the barrier curtain and the sealing door 2, thereby reducing the possibility that the water vapor attached to the sealing door 2 will enter the furnace body 1 and come into contact with the bolts on the other side of the barrier curtain.

[0049] Reference Figure 5 The gas supply head 23 is located on the side of the furnace body 1 near the barrier curtain. When the barrier curtain is lifted, the protective gas ejected from the gas supply head 23 is directed outward.

[0050] The above setup allows the following functionality: When the operator opens the sealed door 2 to remove the mounting frame 11, the operator moves the sliding frame 7, the heat-insulating glass plate 8, and the support rod 10 backward together via the electric slider on the electric slide rail 6. At this time, the push rod 83 on the support rod 10 and the heat-insulating glass plate 8 contacts the adjacent baffle 21, causing the adjacent baffle 21 to be lifted upward around its rotatable connection with the upper baffle 21. This prevents the barrier curtain from obstructing the support rod 10 and the push claw 16 from entering the furnace body 1. Simultaneously, the operator controls the gas circulation system to fill the gas supply head 23 with protective gas. The air at the outlet of furnace body 1 is pushed outward to reduce the probability of water vapor in the air entering furnace body 1. After the support rod 10 and the push claw 16 enter the furnace body 1, they clamp the mounting frame 11 according to the above-described process. When the mounting frame 11 is moved to the holding part 101 on the support rod 10, the mounting frame 11 contacts the push rod 83. Then, during the process of the mounting frame 11 being moved out of the furnace body 1, the barrier curtain is always located above the mounting frame 11 and the push rod 83. When the mounting frame 11 is moved out of the furnace body 1, the lower side of the barrier curtain loses its obstruction and swings downward into a vertical state to continue to block the outlet of the furnace body 1.

[0051] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A horizontal tempering furnace for bolt fasteners, comprising a furnace body (1), wherein a sealing door (2) is rotatably connected to the side of the furnace body (1) near the outlet, and an inner cylinder (3) and circumferentially uniformly distributed heat radiation rods (4) are fixedly connected to the furnace body (1), wherein the inner cylinder (3) is located inside the circumferentially uniformly distributed heat radiation rods (4), characterized in that, The furnace body (1) is rotatably connected to an installation plate (5), the installation plate (5) is fixedly connected to an electric slide rail (6), the electric slide rail (6) is fixedly connected to an electric slider and a sliding frame (7), the sliding frame (7) is slidably connected to a heat-insulating glass plate (8) and an elastic element is installed between the two, the heat-insulating glass plate (8) is used to block the outlet of the furnace body (1), the heat-insulating glass plate (8) is provided with a first through hole (81) and a second through hole (82), the sliding frame (7) is fixedly connected to a support rod (10), the support rod (10) passes through the first through hole (81), a mounting frame (11) is placed on the support rod (10), the mounting frame (11) is used to hold bolts, the furnace body (1) is fixedly connected to rectangularly distributed fixing piles (12), the fixing piles (12) are used to support the mounting frame (11), the sliding frame (7) is provided with an adjustment mechanism for adjusting the mounting height of the mounting frame (11); The adjustment mechanism includes a first electric push rod (14), which is fixed to the sliding frame (7). A second electric push rod (15) is fixed to the telescopic end of the first electric push rod (14). A push claw (16) is fixed to the telescopic end of the second electric push rod (15). The push claw (16) passes through the first through hole (81) and is used to lock the movement of the mounting frame (11). The fixed stake (12) is fixed to a longitudinally spaced support block (13), which is used to support the mounting frame (11). The support rod (10) is provided with a holding part (101) and an inclined part (102).

2. The horizontal tempering furnace for bolt fasteners according to claim 1, characterized in that, The support block (13) is fixedly connected to an obstruction protrusion (131), which is used to limit the position of the mounting frame (11).

3. A horizontal tempering furnace for bolt fasteners according to claim 1, characterized in that, The heat-insulating glass plate (8) is slidably connected to a first shield (17) located at the first through hole (81), and the heat-insulating glass plate (8) is slidably connected to a second shield (18) located at the second through hole (82). The first shield (17) and the second shield (18) are used to reduce the flow area of ​​the first through hole (81) and the second through hole (82).

4. A horizontal tempering furnace for bolt fasteners according to claim 1, characterized in that, The support rod (10) is provided with a support part (103), which provides support force to the support rod (10) when it is in contact with the inner cylinder (3) and the mounting plate (5).

5. A horizontal tempering furnace for bolt fasteners according to claim 4, characterized in that, The furnace body (1) has symmetrically distributed side fixing plates (19) fixed to one side near the outlet. The symmetrically distributed side fixing plates (19) are jointly fixed to an upper fixing plate (20). The upper fixing plate (20) is rotatably connected to a barrier curtain. The barrier curtain is composed of longitudinally distributed baffle plates (21). Two adjacent baffle plates (21) are rotatably connected. The uppermost baffle plate (21) is rotatably connected to the upper fixing plate (20). The heat-insulating glass plate (8) is fixed to a push rod (83). The push rod (83) is used to contact the mounting frame (11). The push rod (83), the mounting frame (11), and the support rod (10) move the baffle plate (21) by pressing it.

6. A horizontal tempering furnace for bolt fasteners according to claim 5, characterized in that, There are gaps at the rotatable connection points of two adjacent shielding plates (21) and at the rotatable connection points of the uppermost shielding plate (21) and the upper fixing plate (20). There are also gaps between two adjacent shielding plates (21), between the shielding plate (21) and the side fixing plate (19), and between the upper fixing plate (20) and the adjacent shielding plates (21), which are used to reserve the gaps required for the shielding plates (21) to expand due to heat.

7. A horizontal tempering furnace for bolt fasteners according to claim 5, characterized in that, The furnace body (1) is equipped with a gas circulation system. The furnace body (1) is equipped with a gas supply head (23) and a gas extraction head (231). Both the gas supply head (23) and the gas extraction head (231) are connected to the gas circulation system. The gas supply head (23) is used to spray protective gas into the furnace body (1).

8. A horizontal tempering furnace for bolt fasteners according to claim 7, characterized in that, A suction head (22) is fixedly connected inside the furnace body (1). The suction head (22) is connected to the gas circulation system and is located between the barrier curtain and the sealing door (2).

9. A horizontal tempering furnace for bolt fasteners according to claim 8, characterized in that, The gas supply head (23) is located on the side of the furnace body (1) near the barrier curtain.

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