Heat treatment apparatus

Abstract

The application discloses a heat treatment equipment, comprising a heat treatment furnace, a heating device, including a feeding port, a feeding sealing lifting door, a discharging port, a discharging sealing lifting door, a U-shaped conveying groove, a heating cavity, a left supporting plate, an electromagnet, a left baffle, a feeding groove, a right supporting plate, a right baffle, a discharging groove, a conveying roller, a feeding frame, a multi-track vibrating feeding disc, a conveying belt and a pushing structure. The application has simple structure and reasonable design, can uniformly place bolts, continuously heat treat and seal the furnace door, can not only make the bolts have good heat treatment efficiency, but also can prevent oil fume from spreading into the workshop from the furnace door during the continuous heat treatment of the bolts.

Description

[Technical Field]

[0001] This invention relates to the technical field of heat treatment equipment, and particularly to the technical field of heat treatment equipment. [Background Technology]

[0002] High-strength bolt connections are one of the most widely used connection methods in ships, offering advantages such as simple construction, replaceability, good load-bearing capacity, and fatigue resistance. Due to the specific design requirements of ships, high-strength bolts are necessary to achieve high-strength structural connections and maintain structural strength under continuous tensile, shear, and bending forces. Therefore, high-strength bolts used in ships require heat treatment to impart physical and chemical properties more suitable for their application scenarios. Heat treatment refers to a metal heat treatment process that uses heating, holding, and cooling to obtain the desired microstructure and properties of materials in a solid state. Metal heat treatment is one of the important processes in mechanical manufacturing. Compared with other processes, heat treatment generally does not change the shape and overall chemical composition of the workpiece, but rather imparts or improves its performance by altering the internal microstructure or surface chemical composition of the workpiece.

[0003] Existing methods for feeding high-strength bolts in heat treatment include manual feeding and semi-automatic machine feeding. Manual feeding places the bolts on a mounting plate or conveyor belt, which prevents them from piling up during heat treatment, but is inefficient. Semi-automatic machine feeding, due to its rough feeding method, can easily lead to bolt accumulation, resulting in localized failure to achieve the expected heat treatment effect and causing quality problems. Therefore, in order to solve the above problems, application number 202120503059.8 disclosed a feeding device for high-strength bolts in heat treatment of wind turbine blades. However, it has a single function, only providing feeding, and the unloading of the heat treatment furnace still relies on manual or some rough semi-automatic machine feeding methods.

[0004] Secondly, current heat treatment furnaces include both continuous and non-continuous types. Non-continuous heat treatment furnaces include box-type resistance furnaces, pit-type resistance furnaces, gas carburizing furnaces, and salt bath furnaces. However, these are all box-type structures with a single-outlet inlet and outlet for the heat treatment process. Although such furnaces have good sealing, their heat treatment efficiency is low for batch production of workpieces, and the process of taking out and putting in the workpieces is time-consuming. Furnaces capable of continuous heat treatment mainly include mesh belt furnaces. When a mesh belt furnace is running, bolts are piled on the surface of the mesh belt, and then the mesh belt is used to feed the bolts into the furnace. The furnace doors on both sides of the mesh belt furnace are then closed. However, due to the presence of the mesh belt, the furnace doors on both sides of the mesh belt furnace cannot be closed as tightly as those of box-type heat treatment furnaces. After the furnace doors on both sides of the mesh belt furnace are closed, there will still be a large gap. This gap not only causes the mesh belt furnace to lose unnecessary heat, but also causes the oil fumes generated during the heat treatment process to diffuse into the workshop, polluting the workshop air and harming the health of employees.

[0005] Therefore, in order to solve the above problems, it is necessary to propose a heat treatment device that can uniformly place bolts, perform continuous heat treatment, and seal the furnace door. [Summary of the Invention]

[0006] The purpose of this invention is to solve the problems in the prior art and to propose a heat treatment device that can evenly place bolts, perform continuous heat treatment, and seal the furnace door. This not only enables the bolts to have good heat treatment efficiency, but also prevents oil fumes from spreading from the furnace door into the workshop during the continuous heat treatment of the bolts.

[0007] To achieve the above objectives, this invention proposes a heat treatment device, comprising a heat treatment furnace and a heating device, including a feed inlet, a feed sealing lifting door, a discharge outlet, a discharge sealing lifting door, a U-shaped conveyor trough, a heating chamber, a left support plate, an electromagnet, a left baffle, a feed groove, a right support plate, a right baffle, a discharge groove, conveyor rollers, a loading rack, a multi-track vibrating loading tray, a conveyor belt, and a pushing structure. The heat treatment furnace has a feed inlet and a discharge outlet at its left and right ends, respectively. A feed sealing lifting door and a discharge sealing lifting door are respectively installed inside the feed inlet and discharge outlet. A U-shaped conveyor trough and a heating chamber are arranged linearly in the left-right direction between the feed inlet and discharge outlet. The bottom of the heating chamber has a U-shaped conveyor trough, and several conveyor rollers are arranged in the front-back direction within the U-shaped conveyor trough. Several heating devices are installed on the inner walls of both the front and rear ends of the heating chamber. Two left-right direction heating devices are located at the right end of the feed inlet. The system consists of two symmetrical left support plates, one parallel to the other. Between the two left support plates are several conveyor rollers arranged in a front-to-back direction. A feeding frame is mounted on the upper surface of each conveyor roller. An electromagnet is mounted on the left support plate behind each conveyor roller. A feeding groove is located on the upper surface of the left support plate in front of each conveyor roller. A conveyor belt is located at the front end of the feeding groove. The left ends of both left support plates are fixed to a left baffle plate, which also has an electromagnet. A multi-track vibrating feeding disc, adapted to the feeding frame, is located on the left side of the left baffle plate. Two right support plates, arranged in a left-to-right direction, are located at the right end of the discharge port. These two right support plates are parallel to the other, one parallel to the other. Several conveyor rollers are arranged in a front-to-back direction between the two right support plates. A pushing structure is located on the right support plate behind each conveyor roller. A discharge groove is located on the upper surface of the right support plate in front of each conveyor roller. A conveyor belt is located at the front end of the discharge groove. The right ends of both right support plates are fixed to the right baffle plate.

[0008] Preferably, the several conveying rollers are evenly distributed in the left and right directions, and the thickness of the infeed sealing lifting gate and the discharge sealing lifting gate is less than the gap between two adjacent conveying rollers. After the lower ends of the infeed sealing lifting gate and the discharge sealing lifting gate pass through the gap between two adjacent conveying rollers, the lower ends of the infeed sealing lifting gate and the discharge sealing lifting gate are pressed against the bottom of the U-shaped conveying trough.

[0009] Preferably, the front and rear width of the U-shaped conveying trough is the same as the front and rear width of the inlet and outlet. The inner vertical wall of the rear end of the U-shaped conveying trough is coplanar with the front end face of the left support plate and the front end face of the right support plate. The inner vertical wall of the front end of the U-shaped conveying trough is coplanar with the rear end face of the left support plate and the rear end face of the right support plate.

[0010] Preferably, the rear end of the conveyor roller is provided with a driven wheel, which is located behind the heat treatment furnace, the left support plate on the rear side, and the right support plate on the rear side. Below the driven wheel is a drive wheel, which is driven by a motor. The driven wheel and the drive wheel are connected by a transmission chain.

[0011] Preferably, several conveyor rollers are located below the upper surface of the left and right support plates, and the top of the several conveyor rollers are coplanar with the bottom of the feed groove, the bottom of the discharge groove, and the upper surface of the conveyor belt.

[0012] Preferably, the feeding rack includes a rectangular box, a limiting groove, an inner limiting plate, and a limiting clip. The rectangular box can be attracted by an electromagnet. The opening of the rectangular box is inclined to the lower right. The opening of the rectangular box has several limiting grooves inclined to the lower right. The limiting grooves are evenly distributed in the front-back direction. The limiting groove is composed of two parallel and symmetrical guide plates. The two guide plates are inclined to the lower right. An inner limiting plate is provided at the right end of the bottom of the rectangular box. A limiting clip is provided between the inner limiting plate and the right end of the inner wall of the rectangular box. The limiting clip is composed of a top plate and a clip plate. The top plate is located above the right end of the limiting groove. Several clip plates are evenly distributed in the front-back direction on the lower end surface of the top plate. The clip plates correspond one-to-one with the limiting grooves. After the lower end of the clip plate passes through the corresponding limiting groove, the lower end of the clip plate extends into the space between the inner limiting plate and the right end of the inner wall of the rectangular box.

[0013] Preferably, the discharge end of the multi-track vibrating feeder is provided with several discharge tracks corresponding to several limiting slides. The discharge end of the discharge track is provided with an electrically controlled opening and closing door and an infrared sensor counter, with the infrared sensor counter located near the discharge port of the discharge track.

[0014] Preferably, the lower end face of the rectangular box is provided with a first anti-slip texture, and the surface of the conveyor roller is provided with a second anti-slip texture that is compatible with the first anti-slip texture.

[0015] Preferably, the pushing structure includes a blind hole, a push plate, and a push rod. The blind hole is located on the front end face of the rear right support plate. The push plate is installed inside the blind hole. The front end face of the push plate is coplanar with the front end face of the rear right support plate. A push rod is provided at the bottom of the blind hole to drive the push plate to move back and forth.

[0016] The beneficial effects of this invention are as follows: This invention has a simple structure and reasonable design, enabling uniform placement of bolts, continuous heat treatment, and sealing of the furnace door. It not only ensures good heat treatment efficiency for the bolts but also prevents fumes from spreading into the workshop from the furnace door during continuous heat treatment. By setting up a multi-track vibrating feeding tray and feeding rack, the bolts can be evenly placed on the feeding rack at a suitable angle, thus preventing bolt accumulation inside the heat treatment furnace and promoting uniform heating during the heat treatment process. Continuous feeding using appropriately spaced conveyor rollers not only ensures continuous bolt processing but also... The continuous heat treatment process allows the lower ends of the infeed and discharge sealing lifting doors to pass through the gap between two adjacent conveyor rollers and press against the bottom of the U-shaped conveyor trough. This eliminates gaps at the lower ends of the infeed and discharge sealing lifting doors, preventing oil fumes from spreading into the workshop and facilitating the sealing of the heat treatment furnace's inlet and outlet. Furthermore, by setting an inclined discharge groove, if bolts on the upper rack need to be removed, the limit clips can be directly removed, and the bolts will slide down the inclined limit groove for easy and quick discharge.

[0017] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. [Attached Image Description]

[0018] Figure 1 This is a front cross-sectional view of the heat treatment equipment of the present invention;

[0019] Figure 2 This is a rear view of the heat treatment equipment of the present invention;

[0020] Figure 3 This is a top cross-sectional view of the heat treatment equipment of the present invention;

[0021] Figure 4 This is a right-side cross-sectional view of the heat treatment furnace section of the heat treatment equipment of the present invention;

[0022] Figure 5 This is a top view of the loading rack of the heat treatment equipment of the present invention;

[0023] Figure 6 This is a front sectional view of the loading rack of the heat treatment equipment of the present invention;

[0024] Figure 7 This is a right view of the limit card of the heat treatment equipment of the present invention.

Detailed Implementation Methods

[0025] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7The heat treatment equipment of the present invention includes a heat treatment furnace 1 and a heating device 15, including a feed inlet 11, a feed sealing lifting door 111, a discharge outlet 12, a discharge sealing lifting door 121, a U-shaped conveyor trough 13, a heating chamber 14, a left support plate 2, an electromagnet 20, a left baffle 21, a feed groove 22, a right support plate 3, a right baffle 31, a discharge groove 32, a conveyor roller 4, a loading rack 5, a multi-track vibrating loading plate 6, a conveyor belt 7, and a pushing structure 8. The heat treatment furnace 1 is provided with a heating device at both its left and right ends. Inlet 11 and outlet 12, each equipped with a sealing lifting gate 111 for feeding and a sealing lifting gate 121 for discharging. Between inlet 11 and outlet 12, a U-shaped conveying trough 13 and a heating chamber 14 are arranged in a straight left-right direction. The bottom of the heating chamber 14 has the U-shaped conveying trough 13, which contains several conveying rollers 4 arranged in a front-back direction. Several heating devices 15 are provided on the inner walls of both the front and rear ends of the heating chamber 14. The right end of inlet 11 has a left-right... Two left support plates 2 are arranged symmetrically front to back, and several conveyor rollers 4 are arranged in a front-to-back direction between the two left support plates 2. The upper end face of the conveyor rollers 4 supports a feeding frame 5. An electromagnet 20 is provided on the left support plate 2 behind the conveyor rollers 4. The upper end face of the left support plate 2 in front of the conveyor rollers 4 is provided with a feeding groove 22. A conveyor belt 7 is provided at the front end of the feeding groove 22. The left end faces of the two left support plates 2 are fixed to a left baffle 21. An electromagnet 20 is provided on the left baffle 21. The left baffle 21 is left... The side is provided with a multi-track vibrating feeding plate 6 adapted to the feeding frame 5. The right end of the discharge port 12 is provided with two right support plates 3 arranged in the left and right direction. The two right support plates 3 are parallel and symmetrical in front and back. Between the two right support plates 3, there are several conveying rollers 4 arranged in the front and back direction. The right support plate 3 behind the conveying roller 4 is provided with a pushing structure 8. The upper end face of the right support plate 3 in front of the conveying roller 4 is provided with a discharge groove 32. The front end of the discharge groove 32 is provided with a conveyor belt 7. The right end faces of the two right support plates 3 are fixed on the right baffle 31.

[0026] Among them, several conveying rollers 4 are evenly distributed in the left and right directions. The thickness of the infeed sealing lifting gate 111 and the discharge sealing lifting gate 121 is less than the gap between two adjacent conveying rollers 4. After the lower ends of the infeed sealing lifting gate 111 and the discharge sealing lifting gate 121 pass through the gap between two adjacent conveying rollers 4, the lower ends of the infeed sealing lifting gate 111 and the discharge sealing lifting gate 121 are pressed against the bottom of the U-shaped conveying trough 13.

[0027] The front-to-back width of the U-shaped conveying trough 13 is the same as the front-to-back width of the inlet 11 and the outlet 12. The inner vertical wall of the rear end of the U-shaped conveying trough 13 is coplanar with the front end face of the rear left support plate 2 and the front end face of the rear right support plate 3. The inner vertical wall of the front end of the U-shaped conveying trough 13 is coplanar with the rear end face of the front left support plate 2 and the rear end face of the front right support plate 3.

[0028] The conveyor roller 4 has a driven wheel 41 at its rear end. The driven wheel 41 is located behind the heat treatment furnace 1, the left support plate 2 at the rear, and the right support plate 3 at the rear. A drive wheel 42 is located below the driven wheel 41. The drive wheel is driven by a motor 44. The driven wheel 41 and the drive wheel 42 are connected by a transmission chain 43.

[0029] Among them, several conveyor rollers 4 are located below the upper surfaces of the left support plate 2 and the right support plate 3, and the top of several conveyor rollers 4 is coplanar with the bottom of the feed groove 22, the bottom of the discharge groove 32, and the upper surface of the conveyor belt 7.

[0030] The feeding rack 5 includes a rectangular box 51, limiting grooves 52, an inner limiting plate 53, and a limiting clip 54. The rectangular box 51 can be attracted by an electromagnet 20. The opening of the rectangular box 51 is inclined to the lower right. The opening of the rectangular box 51 is provided with several limiting grooves 52 inclined to the lower right. The limiting grooves 52 are evenly distributed in the front-back direction. The limiting grooves 52 are composed of two parallel and symmetrical guide plates 521. The two guide plates 521 are inclined to the lower right. The right end of the inner bottom of the rectangular box 51 is provided with... There is an inner limiting plate 53, and a limiting card 54 is provided between the inner limiting plate 53 and the right end of the inner wall of the rectangular box 51. The limiting card 54 is composed of a top plate 541 and a card plate 542. The top plate 541 is located above the right end of the limiting slide 52. The lower end surface of the top plate 541 is provided with several card plates 542 evenly distributed in the front-back direction. The several card plates 542 correspond one-to-one with the several limiting slides 52. After the lower end of the card plate 542 passes through the corresponding limiting slide 52, the lower end of the card plate 542 extends into the space between the inner limiting plate 53 and the right end of the inner wall of the rectangular box 51.

[0031] The multi-track vibrating feeding plate 6 has several discharge tracks 61 corresponding to several limiting slide grooves 52 at its discharge end. The discharge end of the discharge track 61 is equipped with an electrically controlled opening and closing door 62 and an infrared sensor counter 63. The infrared sensor counter 63 is set close to the discharge port of the discharge track 61.

[0032] The rectangular box 51 has a first anti-slip texture 501 on its lower end face, and the conveyor roller 4 has a second anti-slip texture 401 on its surface that is compatible with the first anti-slip texture 501.

[0033] The pusher structure 8 includes a blind hole 81, a pusher plate 82, and a pusher rod 83. The blind hole 81 is located on the front end face of the rear right support plate 3. The pusher plate 82 is located inside the blind hole 81. The front end face of the pusher plate 82 is coplanar with the front end face of the rear right support plate 3. The bottom end of the blind hole 81 is provided with a pusher rod 83 that drives the pusher plate 82 to move back and forth.

[0034] The working process of this invention:

[0035] During the operation of the heat treatment equipment of this invention;

[0036] Step 1: Use the conveyor belt 7 at the feeding groove 22 to feed the loading rack 5 onto the conveyor roller 4 at the discharge port 12, and then start the electromagnet 20 to attract and fix the rectangular box 51.

[0037] Step 2: Pour several bolts into the multi-track vibrating feeding plate 6. The multi-track vibrating feeding plate 6 is started. After the bolts are placed with the screws facing down, they are sent into the discharge track 61. The discharge track 61 then sends the bolts into the corresponding limit slide groove 52. The infrared sensor counter 63 will detect the number of bolts entering the limit slide groove 52. After the discharge track 61 inputs an appropriate number of limit bolts into the limit slide groove 52, the electric control opening and closing door 62 will close to block the bolts of the discharge track 61.

[0038] Step 3: The conveyor roller 4 starts to send the loading rack 5 into the heat treatment furnace 1. Then the infeed sealing lifting door 111 and the discharge sealing lifting door 121 descend and close. Since the thickness of the infeed sealing lifting door 111 and the discharge sealing lifting door 121 is less than the gap between two adjacent conveyor rollers 4, the lower ends of the infeed sealing lifting door 111 and the discharge sealing lifting door 121 pass through the gap between two adjacent conveyor rollers 4. The lower ends of the infeed sealing lifting door 111 and the discharge sealing lifting door 121 can press against the bottom of the U-shaped conveyor trough 13, so that there will be no gap at the lower ends of the infeed sealing lifting door 111 and the discharge sealing lifting door 121, and the oil fumes will not diffuse into the workshop from the lower ends of the infeed sealing lifting door 111 and the discharge sealing lifting door 121.

[0039] Step 4: Heat treatment furnace 1 heat-treats the bolts. After the bolt heat treatment is completed, the discharge sealing lifting door 121 is opened, and the conveyor roller 4 transports the loading rack 5 to the discharge groove 32.

[0040] Step 5: The pushing structure 8 is activated, and the push rod 83 drives the push plate 82 to move forward, pushing the loading rack 5 into the conveyor belt 7 at the discharge groove 32. If it is necessary to remove the bolts on the loading rack 5, the limit card 54 is removed directly, and the bolts will slide down the inclined limit slide 52 to discharge.

[0041] This invention features a simple and rational structure, enabling uniform placement of bolts, continuous heat treatment, and a sealed furnace door. It not only ensures excellent heat treatment efficiency for the bolts but also prevents fumes from spreading into the workshop from the furnace door during continuous heat treatment. By incorporating a multi-track vibrating feeding tray 6 and a feeding rack 5, bolts can be evenly placed at a suitable angle on the feeding rack 5, preventing bolt accumulation inside the heat treatment furnace and promoting uniform heating during the heat treatment process. Continuous feeding via appropriately spaced conveyor rollers 4 not only allows for continuous heat treatment of the bolts but also improves the sealing of the feeding process. The lower ends of the door 111 and the discharge sealing lifting door 121 pass through the gap between two adjacent conveying rollers 4 and press against the bottom of the U-shaped conveying trough 13, thus ensuring that there are no gaps at the lower ends of the infeed sealing lifting door 111 and the discharge sealing lifting door 121, and preventing oil fumes from spreading into the workshop from the lower ends of the infeed sealing lifting door 111 and the discharge sealing lifting door 121, which is beneficial for sealing the inlet and outlet of the heat treatment furnace 1; by setting the inclined discharge groove 32, if it is necessary to remove the bolts on the upper rack 5, the limit card 54 can be removed directly, and the bolts will slide down the inclined limit slide groove 52 to discharge, making bolt discharge convenient and quick.

[0042] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A heat treatment apparatus, comprising a heat treatment furnace (1) and a heating device (15), characterized in that: The heat treatment furnace (1) includes a feed inlet (11), a feed sealing lifting door (111), a discharge outlet (12), a discharge sealing lifting door (121), a U-shaped conveyor trough (13), a heating chamber (14), a left support plate (2), an electromagnet (20), a left baffle (21), a feed groove (22), a right support plate (3), a right baffle (31), a discharge groove (32), a conveyor roller (4), a loading rack (5), a multi-track vibrating loading plate (6), a conveyor belt (7), and a pushing structure (8). The heat treatment furnace (1) has a feed inlet (11) and a discharge outlet (12) at its left and right ends, respectively. The feed inlet (11) and the discharge outlet (12) are respectively equipped with a sealing lifting door for feeding (111) and a sealing lifting door for discharging (121). Between the feed inlet (11) and the discharge outlet (12), there is a U-shaped conveying trough (13) arranged in a straight line in the left and right direction and a heating chamber (14). The bottom of the heating chamber (14) is equipped with a U-shaped conveying trough (13). Several conveying rollers (4) are arranged in the front and back direction in the U-shaped conveying trough (13). Several heating devices (15) are provided on the inner walls of both the front and back ends of the heating chamber (14). Two left support plates (2) are arranged in the left and right direction at the right end of the feed inlet (11). Two left support plates (2) are parallel and symmetrical. Several conveyor rollers (4) are arranged in a front-to-back direction between the two left support plates (2). The upper end of the conveyor rollers (4) is supported by a feeding rack (5). An electromagnet (20) is provided on the left support plate (2) behind the conveyor rollers (4). A feeding groove (22) is provided on the upper end of the left support plate (2) in front of the conveyor rollers (4). A conveyor belt (7) is provided at the front end of the feeding groove (22). The left end of both left support plates (2) is fixed on the left baffle (21). An electromagnet (20) is provided on the left baffle (21). The left side of the left baffle (21) is provided with a... The feeding rack (5) is adapted to the multi-track vibrating feeding plate (6). The right end of the discharge port (12) is provided with two right support plates (3) arranged in the left and right directions. The two right support plates (3) are parallel and symmetrical in front and back. Between the two right support plates (3) are several conveying rollers (4) arranged in the front and back directions. The right support plate (3) behind the conveying roller (4) is provided with a pushing structure (8). The upper end face of the right support plate (3) in front of the conveying roller (4) is provided with a discharge groove (32). The front end of the discharge groove (32) is provided with a conveyor belt (7). The right end faces of the two right support plates (3) are fixed on the right baffle (31).The loading rack (5) includes a rectangular box (51), a limiting groove (52), an inner limiting plate (53), and a limiting card (54). The rectangular box (51) can be attracted by an electromagnet (20). The box opening of the rectangular box (51) is inclined to the lower right. The box opening of the rectangular box (51) is provided with several limiting grooves (52) inclined to the lower right. The several limiting grooves (52) are evenly distributed in the front and back direction. The limiting groove (52) is composed of two parallel and symmetrical guide plates (521). The two guide plates (521) are inclined to the lower right. The inner bottom right end of the rectangular box (51) is provided with an inner limiting plate. (53) A limiting card (54) is provided between the inner limiting plate (53) and the right end of the inner wall of the rectangular box (51). The limiting card (54) consists of a top plate (541) and a card plate (542). The top plate (541) is located above the right end of the limiting slide (52). The lower end of the top plate (541) is provided with several card plates (542) evenly distributed in the front-back direction. The several card plates (542) correspond one-to-one with the several limiting slides (52). After the lower end of the card plate (542) passes through the corresponding limiting slide (52), the lower end of the card plate (542) extends into the space between the inner limiting plate (53) and the right end of the inner wall of the rectangular box (51).

2. The heat treatment equipment as described in claim 1, characterized in that: Several conveying rollers (4) are evenly distributed in the left and right directions. The thickness of the infeed sealing lifting gate (111) and the discharge sealing lifting gate (121) is less than the gap between two adjacent conveying rollers (4). After the lower ends of the infeed sealing lifting gate (111) and the discharge sealing lifting gate (121) pass through the gap between two adjacent conveying rollers (4), the lower ends of the infeed sealing lifting gate (111) and the discharge sealing lifting gate (121) are pressed against the bottom of the U-shaped conveying groove (13).

3. The heat treatment equipment as described in claim 1, characterized in that: The front and rear width of the U-shaped conveying trough (13) is consistent with the front and rear width of the inlet (11) and outlet (12). The inner vertical wall of the rear end of the U-shaped conveying trough (13) is coplanar with the front end face of the left support plate (2) and the front end face of the right support plate (3) on the rear side. The inner vertical wall of the front end of the U-shaped conveying trough (13) is coplanar with the rear end face of the left support plate (2) and the rear end face of the right support plate (3) on the front side.

4. The heat treatment equipment as described in claim 1, characterized in that: The rear end of the conveyor roller (4) is provided with a driven wheel (41). The driven wheel (41) is located behind the heat treatment furnace (1), the left support plate (2) on the rear side, and the right support plate (3) on the rear side. A drive wheel (42) is provided below the driven wheel (41). The drive wheel is driven by a motor (44). The driven wheel (41) and the drive wheel (42) are connected by a transmission chain (43).

5. The heat treatment equipment as described in claim 1, characterized in that: Several conveyor rollers (4) are located below the upper surfaces of the left support plate (2) and the right support plate (3). The top of several conveyor rollers (4) is coplanar with the bottom of the feed groove (22), the bottom of the discharge groove (32), and the upper surface of the conveyor belt (7).

6. The heat treatment equipment as described in claim 1, characterized in that: The discharge end of the multi-track vibrating feeder (6) is provided with several discharge tracks (61) corresponding to several limiting slides (52). The discharge end of the discharge track (61) is provided with an electrically controlled opening and closing door (62) and an infrared sensor counter (63). The infrared sensor counter (63) is set near the discharge port of the discharge track (61).

7. The heat treatment equipment as described in claim 1, characterized in that: The lower end face of the rectangular box (51) is provided with a first anti-slip texture (501), and the surface of the conveyor roller (4) is provided with a second anti-slip texture (401) that is compatible with the first anti-slip texture (501).

8. The heat treatment equipment as described in claim 1, characterized in that: The pusher structure (8) includes a blind hole (81), a pusher plate (82), and a pusher rod (83). The blind hole (81) is located on the front end face of the right support plate (3) on the rear side. The pusher plate (82) is located inside the blind hole (81). The front end face of the pusher plate (82) is coplanar with the front end face of the right support plate (3) on the rear side. The bottom end of the blind hole (81) is provided with a pusher rod (83) that drives the pusher plate (82) to move back and forth.

Images