Workpiece preheating holding furnace

Abstract

The utility model provides a workpiece preheating holding furnace which comprises a cylindrical shell, a vapor chamber is fixedly connected to the inner wall of the shell, a plurality of electric heating pipes are arranged in the vapor chamber in a penetrating mode, a containing frame is arranged in the shell, the containing frame is a tubular part, a containing groove is formed in the circumferential face of the containing frame, and the containing groove is communicated with the vapor chamber. A guardrail is arranged on the lower portion of the containing groove, a rotating shaft is arranged in the middle of the upper end of the shell in a downward penetrating mode, the lower end of the rotating shaft is a hemisphere and is movably matched in a preset groove in the inner bottom wall of the shell, a connecting rod is fixedly connected to the side wall of the rotating shaft, and the other end of the connecting rod is fixedly connected with the inner wall of the containing frame. And the upper part of the rotating shaft is fixedly connected with a rotating handle. According to the invention, the placing rack is rotatably arranged in the shell, and the rotary arrangement only needs to be provided with a smaller opening, so that the taking and placing of workpieces can be realized, and the heat loss is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of holding furnace, in particular to a workpiece preheating holding furnace. BACKGROUND

[0002] In the production of chemical fiber, the fiber is obtained by using a spinning device. In the production preparation of the spinning device, the spinning plate and other components need to be preheated to reduce the risk of blockage. If blockage occurs, quick replacement processing is required. Therefore, a holding furnace is usually provided on the production line of chemical fiber production to ensure the replacement of the blocked components of the spinning device.

[0003] Since the working cycle of the holding furnace is synchronized with the spinning device, the means for reducing heat loss of the holding furnace is a measure of cost reduction and energy saving and environmental protection. The furnace door of the existing holding furnace is mostly double-leaf, and after the furnace door is opened, the internal heating chamber is completely exposed, resulting in serious heat loss. SUMMARY

[0004] To solve the above problems, the present application discloses a workpiece preheating holding furnace, which comprises a cylindrical shell, the inner wall of the shell is fixedly connected with a heat equalizing plate, and a plurality of electric heating pipes are arranged in the heat equalizing plate. The heat equalizing plate is a plate member with good heat conductivity, and the electric heating pipes generate heat when electrified, which heats the workpiece by means of air heat transfer and heat radiation of the heat equalizing plate.

[0005] The inside of the shell is provided with a placing rack, the placing rack is a tubular member, and the circumferential surface is provided with a placing groove, the lower part of the placing groove is provided with a guardrail, the upper end of the shell is provided with a rotating shaft penetrating downward, the lower end of the rotating shaft is a hemisphere, and the lower end of the rotating shaft is movably fitted in the groove pre-set in the inner bottom wall of the shell, the side wall of the rotating shaft is fixedly connected with a connecting rod, the other end of the connecting rod is fixedly connected with the inner wall of the placing rack, and the upper part of the rotating shaft is fixedly connected with a handle. The workpiece is placed in the placing groove for heating, and the placing rack inside is rotated by the handle when the workpiece is taken out or placed.

[0006] Preferably, the side wall of the shell is provided with an opening, the opening is provided with a sealing plate rotatably connected, one side of the sealing plate is provided with two rotating arms, the middle part of the rotating arm is fixedly connected with a connecting protrusion, and the connecting protrusion is rotatably fitted in the side edge of the sealing plate. The sealing plate is rotated to open the opening, and the rotating rack is rotated to facilitate the taking and placing of the workpiece through the opening. The opening can be as small as possible when the workpiece is taken out or placed, which can reduce heat loss.

[0007] Preferably, one end of the rotating arm is provided with a matching end, the side wall of the shell is provided with a buckle groove, and the matching end and the buckle groove are matched, a spring is fixedly connected to the rotating arm, and the other end of the spring abuts against the sealing plate. Through the action of the spring, the rotating arm is pushed to rotate, so that the matching end is buckled in the buckle groove, that is, the sealing plate is attached to the opening, and it is also relatively simple to rotate the sealing plate to open the opening, and only the rotating arm needs to be buckled to compress the spring, at this time, the matching end is separated from the buckle groove, and the sealing plate can be continuously rotated, and the force of the compressed spring and the force of the opened sealing plate are in the same direction, which has the advantages of simple opening of the sealing plate.

[0008] Preferably, a handle is arranged between the two rotating arms. The sealing plate is pushed and pulled through the handle.

[0009] Preferably, a plurality of supporting legs are fixedly connected to the lower end of the shell. The supporting legs are rod members with a circular cross section, which provide support for the shell.

[0010] Preferably, a control box is fixedly connected to one side of the shell, and a display screen and a button are arranged on the front face of the control box. The display screen and the button are used for human-computer interaction, and the control box is an external power supply for supplying power to the internal electric heating pipe.

[0011] The beneficial effects of the present application are as follows:

[0012] 1. The placing rack is arranged to rotate in the cylindrical shell, and the placing groove is arranged in the side wall of the placing rack, so that only the opening capable of taking and placing the workpiece in the single placing groove needs to be arranged on the side wall of the shell, and the heat loss can be greatly reduced.

[0013] 2. The rotating arm, the spring, the matching end and other components are arranged, and the sealing plate can be opened by pulling the handle, which has the advantage of simple operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the present application;

[0015] Figure 2 It is a perspective view of the shell of the present application;

[0016] Figure 3 It is a perspective view of the internal placing rack of the present application;

[0017] Figure 4 It is a schematic view of the electric heating structure of the present application;

[0018] Figure 5 It is an enlarged view of the structure of one side of the sealing plate of the present application.

[0019] LIST OF REFERENCE NUMBERS:

[0020] 1. Sealing plate; 2. Housing; 3. Support leg; 4. Opening; 5. Snap-in groove; 6. Control box; 7. Display screen; 8. Button; 9. Placement rack; 10. Placement slot; 11. Guardrail; 12. Connecting rod; 13. Rotating shaft; 14. Rotating handle; 15. Heat spreader; 16. Electric heating element; 17. Handle; 18. Rotating arm; 19. Spring; 20. Connecting protrusion; 21. Mating end. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] like Figures 1 to 5 As shown, a workpiece preheating and heat preservation furnace includes a cylindrical shell 2, which has three layers: an inner shell, an outer shell, and a heat preservation layer in the middle. A heat spreader 15 is fixedly connected to the inner wall of the shell 2. The heat spreader 15 is made of a material with good thermal conductivity, such as aluminum alloy, and its surface is coated with graphene coating, etc. Several electric heating tubes 16 are interspersed inside the heat spreader 15. The electric heating tubes 16 generate heat when energized, and the heat is conducted to the heat spreader 15. Then, the workpieces inside are heated by means of air heat transfer and heat radiation.

[0023] The housing 2 has a placement rack 9 inside, which is tubular and has a placement groove 10 on its circumferential surface. The placement rack 9 has an annular cross-section. A guardrail 11 is provided at the bottom of the placement groove 10 to prevent the workpiece from falling after it is placed in the groove. A rotating shaft 13 extends downwards from the middle of the upper part of the housing 2. The lower end of the rotating shaft 13 is hemispherical and movably fits into a groove pre-set in the bottom wall of the housing 2. The spherical surface of the lower end of the rotating shaft 13 contacts the... The rotating shaft 13 is positioned to facilitate rotation and restrict the rotation point. A connecting rod 12 is fixedly connected to the side wall of the rotating shaft 13, and the other end of the connecting rod 12 is fixedly connected to the inner wall of the placement rack 9. A handle 14 is fixedly connected to the upper part of the rotating shaft 13. By holding the handle 14, the rotating shaft 13 is rotated, thereby realizing the rotation of the placement rack 9. If the preheating temperature of the workpiece is high, the handle 14 can be replaced with a sprocket. A drive motor is set on the side wall of the housing 2, and the internal placement rack 9 is driven to rotate through the transmission of the sprocket and chain.

[0024] Further, the uniform heat plate 15 is fixedly connected to the inner wall of the shell 2, that is, the uniform heat plate 15 is a tubular member, and the placing rack 9 is located on the inner side of the uniform heat plate 15; when the electric heating pipe 16 works, the heat generated not only heats the workpiece in the form of heat radiation, but also heats the air in the shell 2; the middle part of the tubular placing rack 9 can circulate air; specifically, the air between the placing rack 9 and the uniform heat plate 15 is heated and rises, and the air in the middle part of the placing rack 9 is pushed to sink, so that the air circulates in the shell 2.

[0025] The side wall of the shell 2 is provided with an opening 4, which is a relatively vertical and narrow opening; the opening 4 is provided with a sealing plate 1 which is rotatably connected to the opening 4; the sealing plate 1 seals the opening; compared with the door of the existing heat preservation furnace, the opening 4 is smaller, so that the heat loss is reduced when the workpiece is taken out or placed; one side of the sealing plate 1 is provided with two rotating arms 18; one end of the rotating arm 18 is arc-shaped; the middle part of the rotating arm 18 is fixedly connected with a connecting protrusion 20; the connecting protrusion 20 is rotatably connected to the side of the sealing plate 1; that is, the rotating arm 18 is rotatably connected to the sealing plate 1 by means of the connecting protrusion 20.

[0026] One end of the rotating arm 18 is provided with a matching end 21 which is located at one end of the arc; the side wall of the shell 2 is provided with a buckle groove 5; the matching end 21 and the buckle groove 5 are matched; when the sealing plate 1 is attached to the opening 4, the matching end 21 and the buckle groove 5 are matched together, so that the sealing plate 1 is locked; the rotating arm 18 is fixedly connected with a spring 19; the connecting protrusion 20 is located between the spring 19 and the matching end 21; the other end of the spring 19 abuts against the sealing plate 1; specifically, when the spring 19 works, the rotating arm 18 is pushed to rotate, so that the matching end 21 is kept matched in the buckle groove 5.

[0027] The two rotating arms 18 are provided with a handle 17; the handle 17 and the rotating arm 18 are fixedly connected; when the handle 17 is pulled, the spring 19 is compressed, and at the same time, the matching end 21 is separated from the buckle groove 5; by keeping pulling the handle 17, the sealing plate 1 can be rotated and opened.

[0028] The lower end of the shell 2 is fixedly connected with a plurality of supporting legs 3; the supporting legs 3 are cylindrical rods which provide support for the shell 2.

[0029] One side of the shell 2 is fixedly connected with a control box 6; the control box 6 is provided with related electronic components; the front surface of the control box 6 is provided with a display screen 7 and a key 8; the display screen 7 and the key 8 are used for human-computer interaction.

[0030] The technical means disclosed in the present application scheme are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A workpiece preheating and holding furnace, characterized in that, It includes a cylindrical shell (2), and a heat spreader (15) is fixedly connected to the inner wall of the shell (2). Several electric heating tubes (16) are interspersed inside the heat spreader (15). The housing (2) is provided with a placement rack (9) inside. The placement rack (9) is a tubular part and a placement groove (10) is provided on the circumferential surface. A guardrail (11) is provided at the lower part of the placement groove (10). A rotating shaft (13) is provided through the middle of the upper end of the housing (2) downward. The lower end of the rotating shaft (13) is a hemisphere and is movably fitted in a groove preset in the bottom wall of the housing (2). A connecting rod (12) is fixedly connected to the side wall of the rotating shaft (13). The other end of the connecting rod (12) is fixedly connected to the inner wall of the placement rack (9). A rotating handle (14) is fixedly connected to the upper part of the rotating shaft (13).

2. The workpiece preheating and holding furnace according to claim 1, characterized in that: The side wall of the housing (2) is provided with an opening (4), and a sealing plate (1) is rotatably connected to the opening (4). Two rotating arms (18) are provided on one side of the sealing plate (1), and a connecting protrusion (20) is fixedly connected to the middle of the rotating arm (18). The connecting protrusion (20) is rotatably engaged with the side of the sealing plate (1).

3. The workpiece preheating and holding furnace according to claim 2, characterized in that: One end of the rotating arm (18) is provided with a mating end (21), and the side wall of the housing (2) is provided with a snap groove (5). The mating end (21) and the snap groove (5) are mated. A spring (19) is fixedly connected to the rotating arm (18), and the other end of the spring (19) abuts against the sealing plate (1).

4. The workpiece preheating and holding furnace according to claim 2, characterized in that: A handle (17) is provided between the two rotating arms (18).

5. A workpiece preheating and holding furnace according to claim 1, characterized in that: The lower end of the housing (2) is fixedly connected with several support legs (3).

6. The workpiece preheating and holding furnace according to claim 1, characterized in that: A control box (6) is fixedly connected to one side of the housing (2), and a display screen (7) and buttons (8) are provided on the front of the control box (6).

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