Efficient fuel gas annealing furnace

Abstract

The utility model discloses an efficient fuel gas annealing furnace which comprises a base, a furnace body, a furnace door and two trolleys, the furnace body is installed on the top of the base, a heating cavity is formed in one side of the furnace body, the furnace door is arranged on the side wall of the furnace body in a sliding mode, the furnace door corresponds to the heating cavity, an equipment frame is further installed on one side of the base, and two supporting plates are arranged in the equipment frame in a sliding mode. A driving assembly used for driving the two supporting plates to move is arranged in the equipment frame, a connecting block is fixed between the two supporting plates, the two trolleys are arranged on the two supporting plates in a sliding mode, the two trolleys move left and right through the two supporting plates, and a penetrating groove is formed in the side, close to the furnace body, of the equipment frame and corresponds to the heating cavity. And a pushing assembly used for pushing the trolley to move is arranged on the side wall of the equipment frame, so that the problems that a large amount of time needs to be consumed for taking and placing the steel part when the steel part is subjected to annealing machining, heat in the furnace body is lost due to long-time opening of the furnace door, and the machining efficiency is influenced are solved.

Description

Technical Field

[0001] This utility model relates to the field of annealing furnace technology, and in particular to a high-efficiency gas-fired annealing furnace. Background Technology

[0002] Existing annealing furnaces are classified into electric heating annealing furnaces, oil-fired annealing furnaces, and gas-fired annealing furnaces based on their heating methods. Annealing furnaces are common heat treatment equipment, typically used for metal heat treatment. Some coiled metal wires are heat-treated in annealing furnaces and then used to manufacture standard parts such as bolts and screws. Annealing furnaces can generally be divided into electric heating annealing furnaces and gas-fired annealing furnaces based on their heating methods. Gas-fired annealing furnaces mix combustible gas and air, ignite it using an igniter, and heat the furnace chamber inside, thus providing a suitable high-temperature environment for annealing the metal wires within the furnace chamber.

[0003] Gas-fired annealing furnaces also include trolley-type gas-fired annealing furnaces. Trolley-type gas-fired annealing furnaces are suitable for annealing (normalizing) of medium and large cast steel parts, as well as stress-relieving annealing, tempering and other heat treatment processes of steel structural parts. The structural features include a fiber furnace lining structure, which has low heat storage and fast heating speed. It adopts cylinder compression sealing, which has a good furnace body sealing effect. When using it, the steel parts are placed on the trolley of the gas-fired annealing furnace, and then the trolley is controlled to move the steel parts into the gas-fired annealing furnace for annealing treatment.

[0004] In the use of a bogie-type gas annealing furnace, after the steel parts have been annealed, they must be removed before new steel parts can be placed in for annealing. Therefore, when there are many steel parts on the bogie of the bogie-type gas annealing furnace during batch annealing, removing the annealed steel parts one by one and placing new steel parts for annealing consumes a lot of time. The prolonged opening of the furnace door also leads to heat loss inside the furnace, requiring the furnace to reheat itself after subsequent steel parts are placed in, thus affecting processing efficiency. To address these issues, a solution is proposed below. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency gas-fired annealing furnace to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] The utility model provides an efficient gas annealing furnace, including base, furnace body, furnace door and two cars, the furnace body is installed at the top of base, the one side of furnace body is equipped with heating cavity, the furnace door is arranged on the side wall of furnace body and slides, the furnace door corresponds with heating cavity, one side of base is equipped with equipment frame still, two support plates are arranged in equipment frame and slide, be equipped with drive assembly in equipment frame for driving two support plates and move, two connecting blocks are fixed between two support plates, two trolleys are arranged on two support plates and slide, two trolleys realize left and right movement through two support plates, the one side of equipment frame is equipped with through groove close to furnace body, through groove corresponds with heating cavity, the side wall of equipment frame is equipped with the pusher assembly for pushing trolley and moving.

[0008] As preferred, the drive assembly includes a screw rod and two slide rods, the screw rod is rotatably arranged on the equipment frame, the two slide rods are respectively arranged on the two sides of the screw rod, the two ends of the slide rods are respectively mounted on the inner walls of the equipment frame, a reduction motor is mounted on the side wall of the equipment frame, the output shaft of the reduction motor penetrates the side wall of the equipment frame, the output shaft of the reduction motor is fixedly connected with the screw rod, the middle part of the support plate is threadedly connected with the screw rod, and the two ends of the support plate are slidably arranged on the two slide rods.

[0009] As preferred, the pusher assembly includes a pneumatic cylinder and a push block, the pneumatic cylinder is fixedly mounted on the side wall of the equipment frame, the push block is fixed on the piston rod of the pneumatic cylinder, a sliding groove I is formed in the side wall of the equipment frame for the sliding movement of the push block, the two support plates are respectively provided with a sliding groove II corresponding to the sliding groove I, the sliding groove I and the sliding groove II are both through structures, one end of the push block corresponds to the side wall of the trolley, and the trolley slides through the push block.

[0010] As preferred, two sliding grooves III in communication are symmetrically formed in the support plate and the top of the base, a plurality of cast iron rollers are symmetrically mounted on the bottom of the trolley, and each cast iron roller is slidably arranged in the sliding groove III.

[0011] As preferred, a push-pull handle is mounted on the side of the trolley away from the furnace body, a wide groove is formed in the top of the push block, and a connecting piece is mounted between the push-pull handle and the push block.

[0012] As preferred, limit blocks are mounted on the two inner side walls of the equipment frame, the two limit blocks correspond to the support plate, and high-temperature pressure sensors are mounted on the opposite positions of the two limit blocks.

[0013] Beneficial effects: By designing two sets of trolleys, the two sets of trolleys can be used alternately. When the steel parts on one set of trolleys are pulled out of the furnace after annealing, the two supporting plates can be driven synchronously by the driving assembly, and the supporting plates can drive the top trolley to move. One trolley can drive the annealed steel parts to separate from the corresponding position of the furnace, and the other trolley can correspond to the furnace through the bottom supporting plate. The unannealed steel parts are pushed into the furnace by starting the pushing assembly, and the furnace door is closed for annealing. At this time, the annealed steel parts can be taken off the trolley, and the unannealed steel parts can be replaced for subsequent alternating use with another trolley. This avoids the trouble of waiting for the operator to take and place the steel parts in the annealing furnace, improves the production efficiency, reduces the opening time of the furnace door, reduces the heat loss, and makes the whole more efficient and flexible. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 Structure schematic view of the embodiment;

[0015] Fig. 2 Structure schematic view of the embodiment for showing the trolley entering the furnace;

[0016] Fig. 3 Structure schematic view of the embodiment for showing the equipment frame from the top;

[0017] Fig. 4 Structure schematic view of the embodiment for showing the equipment frame without installing the trolley from the top;

[0018] Fig. 5 Structure schematic view of the embodiment for showing the equipment frame and the supporting plate from the section;

[0019] Fig. 6 Structure schematic view of the embodiment for showing the trolley and the pushing block.

[0020] Reference signs: 1, base; 2, furnace body; 3, furnace door; 4, trolley; 5, equipment frame; 6, supporting plate; 7, driving assembly; 71, screw rod; 72, sliding rod; 73, speed reducer motor; 8, connecting block; 9, through slot; 10, pushing assembly; 101, air cylinder; 102, pushing block; 103, sliding groove one; 104, sliding groove two; 105, sliding groove three; 106, cast iron roller; 107, push-pull handle; 108, limiting block. DETAILED DESCRIPTION

[0021] See Figs. 1 to 6As shown, an efficient gas annealing furnace, including base 1, furnace body 2, furnace door 3 and two trolley 4, furnace body 2 is installed on the top of base 1, one side of furnace body 2 is provided with heating cavity, furnace door 3 is slidably arranged on the side wall of furnace body 2, furnace door 3 corresponds to the heating cavity, one side of base 1 is also provided with equipment frame 5, two support plates 6 are slidably arranged in equipment frame 5, two trolley 4 are slidably arranged on two support plates 6, when the steel parts need to be annealed, the processed steel parts can be placed on two trolley 4, the side of equipment frame 5 close to furnace body 2 is provided with through groove 9, the through groove 9 corresponds to the heating cavity, the side wall of equipment frame 5 is provided with pushing assembly 10 for pushing trolley 4 to move, at this time, pushing assembly 10 can be started, trolley 4 corresponding to through groove 9 is pushed to move by pushing assembly 10, so that trolley 4 can be pushed into the heating cavity, at this time, furnace door 3 is closed, the annealing of steel parts is realized.

[0022] Pushing assembly 10 includes cylinder 101 and push block 102, cylinder 101 is fixedly installed on the side wall of equipment frame 5, push block 102 is fixed on the piston rod of cylinder 101, slide groove one 103 is formed on the side wall of equipment frame 5 for the sliding of push block 102, two support plates 6 are provided with slide groove two 104 matched with slide groove one 103, slide groove one 103 and slide groove two 104 are through structure, slide groove two 104 corresponds to through groove 9, one end of push block 102 corresponds to the side wall of trolley 4, trolley 4 realizes sliding through push block 102, when trolley 4 needs to be pushed to move, cylinder 101 can be started first, the piston rod of cylinder 101 pushes push block 102 to move, push block 102 passes through slide groove one 103 on equipment frame 5 and contacts with the side wall of trolley 4, trolley 4 realizes the movement on the top of support plate 6 through push block 102.

[0023] Support plate 6 and base 1 are symmetrically provided with slide groove three 105 connected, trolley 4 is symmetrically provided with a plurality of cast iron rollers 106 at the bottom, each cast iron roller 106 is slidably arranged in slide groove three 105, when trolley 4 moves, the cast iron rollers 106 at the bottom are driven to slide in slide groove three 105, the setting of cast iron rollers 106 facilitates the movement of trolley 4, the continuous movement of trolley 4 makes the cast iron rollers 106 at the bottom of trolley 4 move into slide groove three 105 on base 1, and then realize the cooperation with furnace body 2.

[0024] When the steel piece is annealed, the furnace door 3 is opened first, and then the trolley 4 is pulled out of the furnace body 2 by the pushing assembly 10. The side of the trolley 4 away from the furnace body 2 is provided with a push-pull handle 107. A wide slot is formed in the top of the push block 102. A connecting piece is arranged between the push-pull handle 107 and the push block 102. When the trolley 4 needs to be pulled out of the furnace body 2, the piston rod of the air cylinder 101 is first extended to a position corresponding to the connecting piece. The connecting piece is composed of two connecting plates one and two. The two connecting plates one are respectively fixed at the two ends of the bottom of the connecting plate two. The two connecting plates one are respectively arranged in the push-pull handle 107 and the wide slot of the push block 102. The air cylinder 101 is started. The piston rod of the air cylinder 101 pulls the push block 102. The push block 102 pulls the push-pull handle 107 through the connecting piece. Thus, the trolley 4 is pulled to move. The trolley 4 can be moved to the supporting plate 6 again.

[0025] The device frame 5 is provided with a driving assembly 7 for driving the two supporting plates 6 to move. When the annealed steel piece and the trolley 4 return to the supporting plate 6, the driving assembly 7 is started. The two supporting plates 6 are driven by the driving assembly 7 to move. The annealed steel piece can be separated from the through groove 9 through the supporting plate 6. The other side of the steel piece not subjected to annealing and the trolley 4 can be moved to the position corresponding to the through groove 9 through the supporting plate 6. At this time, the pushing assembly 10 is started. Another set of trolley 4 is pushed into the furnace body 2 through the pushing assembly 10 to be annealed. At this time, the annealed steel piece can be taken off from the trolley 4. The unannealed steel piece is replaced. The subsequent alternating use of another trolley 4 is facilitated. The annealing furnace does not need to wait for the operator to take and place the steel piece. The production efficiency is improved.

[0026] The driving assembly 7 includes a screw rod 71 and two slide rods 72. The screw rod 71 is rotationally arranged on the device frame 5. The two slide rods 72 are respectively arranged on the two sides of the screw rod 71. The two ends of the slide rod 72 are respectively mounted on the inner wall of the device frame 5. A speed reducer motor 73 is mounted on the side wall of the device frame 5. The output shaft of the speed reducer motor 73 penetrates the side wall of the device frame 5. The output shaft of the speed reducer motor 73 is fixedly connected with the screw rod 71. The middle part of the supporting plate 6 is threadedly connected with the screw rod 71. The two ends of the supporting plate 6 are slidably arranged on the two slide rods 72. When the supporting plate 6 needs to be pushed to move, the speed reducer motor 73 is started first. The screw rod 71 is driven to rotate by the speed reducer motor 73. The supporting plate 6 threadedly connected with the screw rod 71 is driven to move by the rotation of the screw rod 71. The two ends of the supporting plate 6 are slidably arranged on the slide rod 72. The supporting plate 6 is rotationally limited by the slide rod 72. The original rotational connection with the screw rod 71 is changed into the sliding connection with the screw rod 71 and the slide rod 72. The connecting block 8 is fixed between the two supporting plates 6. The two supporting plates 6 form a whole through the connecting block 8. The two supporting plates 6 can be synchronously moved. The supporting plate 6 can drive the trolley 4 at the top to move.

[0027] The two inner side walls of the equipment frame 5 are respectively provided with a limiting block 108 corresponding to the support plate 6. The opposite positions of the two limiting blocks 108 are respectively provided with a high-temperature pressure sensor. The side wall of the support plate 6 is in contact with the high-temperature pressure sensor through the continuous sliding of the screw rod 71. The high-temperature pressure sensor is connected with a controller. When the high-temperature pressure sensor is pressed by the support plate 6, the high-temperature pressure sensor transmits data to the controller. The controller processes the data through an internal data processing module, so that the controller can control the speed reducer 73 to be closed in time. When one side of the support plate 6 is in contact with the high-temperature pressure sensor, the other side of the support plate 6 is just in correspondence with the through groove 9, that is, the trolley 4 is in correspondence with the heating cavity, so that the two trolleys 4 can be used alternately, and the annealing efficiency of the steel piece is improved.

Claims

1. A high efficiency gas fired annealing furnace comprising a base (1), a furnace body (2), a furnace door (3) and two trolleys (4), characterized in that, The furnace body (2) is installed on the top of the base (1), one side of the furnace body (2) is provided with a heating cavity, the furnace door (3) is slidably arranged on the side wall of the furnace body (2), the furnace door (3) corresponds to the heating cavity, and the base (1) is further provided with an equipment frame (5) on one side. The equipment frame (5) is slidably provided with two supporting plates (6) therein, and the equipment frame (5) is provided with a driving assembly (7) for driving the two supporting plates (6) to move. The two supporting plates (6) are fixedly connected with the connecting block (8), and the two trolleys (4) are slidably arranged on the two supporting plates (6). The two trolleys (4) are moved left and right through the two supporting plates (6). The side of the equipment frame (5) close to the furnace body (2) is provided with a through groove (9), and the through groove (9) corresponds to the heating cavity. The side wall of the equipment frame (5) is provided with a pushing assembly (10) for pushing the trolley (4) to move.

2. The high efficiency gas fired annealing furnace as claimed in claim 1, wherein, The driving assembly (7) comprises a screw rod (71) and two slide rods (72), the screw rod (71) is rotatably arranged on the equipment frame (5), the two slide rods (72) are arranged on the two sides of the screw rod (71) respectively, the two ends of the slide rod (72) are mounted on the inner wall of the equipment frame (5) respectively, the side wall of the equipment frame (5) is provided with a speed reducer (73), the output shaft of the speed reducer (73) penetrates the side wall of the equipment frame (5), the output shaft of the speed reducer (73) is fixedly connected with the screw rod (71), and the middle part of the supporting plate (6) is threadedly connected with the screw rod (71). The two ends of the supporting plate (6) are slidably arranged on the two slide rods (72).

3. The high efficiency gas fired annealing furnace as claimed in claim 1 wherein, The pushing assembly (10) comprises a cylinder (101) and a push block (102), the cylinder (101) is fixedly installed on the side wall of the equipment frame (5), the push block (102) is fixed on the piston rod of the cylinder (101), the side wall of the equipment frame (5) is provided with a sliding groove (103) for the sliding of the push block (102), and the two supporting plates (6) are provided with sliding grooves (104) matched with the sliding groove (103). The sliding groove (103) and the sliding groove (104) are both through structures, one end of the push block (102) corresponds to the side wall of the trolley (4), and the trolley (4) slides through the push block (102).

4. The high efficiency gas fired annealing furnace of claim 3, wherein, The supporting plate (6) and the top of the base (1) are symmetrically provided with two communicating sliding grooves (105), and the bottom of the trolley (4) is symmetrically provided with a plurality of cast iron rollers (106), each cast iron roller (106) is slidably arranged in the sliding groove (105).

5. The high efficiency gas fired annealing furnace as claimed in claim 3, wherein, A push-pull handle (107) is installed on the side of the trolley (4) away from the furnace body (2), a wide groove is formed in the top of the push block (102), and a connecting piece is arranged between the push-pull handle (107) and the push block (102).

6. The high efficiency gas fired annealing furnace of claim 1, wherein, The device frame (5) is provided with a limiting block (108) on each of the two inner side walls, and the limiting blocks (108) correspond to the support plates (6). High-temperature pressure sensors are installed on the opposite positions of the limiting blocks (108).

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