High-efficiency heating heat treatment furnace for inner ring and outer ring of large annular piece

Abstract

The utility model discloses a high-efficiency heating heat treatment furnace for inner and outer rings of a large annular piece, and relates to the technical field of heat treatment processing. The device comprises a base plate, a sizing block frame and a top cover, an outer cylinder is fixed to the edge of the top end face of the base plate, a furnace body outer lining is fixed to the inner wall of the outer cylinder, a plurality of outer heating belts are fixed to the inner wall of the furnace body outer lining, and the distances between the vertically adjacent outer heating belts are equal; a first air deflector is fixed to the end, facing the inner axis of the outer cylinder, of the first connecting rod, a sizing block frame is fixed to the lower end of the first air deflector, a supporting ring is arranged at the top of the sizing block frame, a top cover is arranged at the top ends of the outer cylinder and the furnace body outer lining, and an outer sealing cylinder is fixed to the outer side of the bottom end face of the top cover. According to the utility model, the chassis, the sizing block frame and the top cover are arranged, so that the problems that the treatment uniformity of a heat treatment furnace is not good enough when a large annular piece is subjected to heat treatment and the support is not balanced enough when a smaller workpiece is subjected to heat treatment are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat treatment processing, in particular to a heat treatment furnace for efficiently heating inner and outer rings of a large annular part. Background Art

[0002] Heat treatment refers to a metal heat processing process in which metal materials are heated, kept warm and cooled in the solid state to change the chemical composition and structure of the surface or inside of the material to obtain the required properties. When the heat treatment furnace is working, the corresponding workpiece is placed in the furnace body. During processing in the furnace body, heating and heat preservation operations are performed to change the corresponding physical properties of large annular parts. However, it still has the following disadvantages in actual use:

[0003] When large annular parts are heat treated directly using traditional furnaces, the space inside the furnace needs to be heat treated as a whole. During the heat treatment process, the heating space is large, and the heating speed of the inner wall of the annular part is slow, and the heat treatment efficiency is not high enough;

[0004] When large annular parts are heat treated, the treatment furnace can only heat treat the annular workpieces. During the heat treatment process, other smaller workpieces need another heat treatment furnace, which increases the cost. When the annular parts are heat treated in the treatment furnace, shims are used for support. When the shims are working, it is easy to cause the workpiece being treated to be unbalanced, affecting the heat treatment effect. Utility Model Content

[0005] The purpose of the utility model is to provide a heat treatment furnace for efficiently heating the inner and outer rings of large annular parts. By arranging a chassis, a pad iron frame and a top cover, the problems of insufficient uniformity of the heat treatment furnace when heat treating large annular parts and insufficient balance of support when heat treating smaller workpieces are solved.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a large-scale annular member inner and outer ring high-efficiency heating heat treatment furnace, comprising a chassis, a pad iron frame and a top cover, an outer cylinder is fixed at the edge of the top surface of the chassis, a furnace body lining is fixed on the inner wall of the outer cylinder, a plurality of external heating belts are fixed on the inner wall of the furnace body lining, and the spacing between the upper and lower adjacent external heating belts is equal, a connecting rod is fixed on the upper part of the inner wall of the furnace body lining in an annular array, an air guide plate is fixed on one end of the connecting rod toward the inner axis of the outer cylinder, and the lower end of the air guide plate is fixed with a pad iron frame A supporting ring is provided on the top of the iron pad frame, and a top cover is provided on the top of the outer tube and the outer lining of the furnace body. An outer sealing tube is fixed to the outer side of the bottom end surface of the top cover, and the outer sealing tube is movably connected in the outer lining of the furnace body. When working, the iron pad frame and the top cover are supported on them by the chassis, and the external heating belt is heated through the outer lining of the furnace body, and the corresponding workpiece is supported on it by the iron pad frame, and the corresponding workpiece skin is matched well by the supporting ring on the top of the iron pad frame, and the space between the air guide plate 1 and the air guide plate 2 is closed by the top cover.

[0008] Furthermore, a steel cylinder is fixed in the center of the top surface of the chassis, a furnace lining is fixed on the circumference of the steel cylinder, and two connecting rods are fixed in a circular array on the upper part of the circumference of the furnace lining, and the air guide plate 2 is connected thereto through the furnace lining and the two connecting rods.

[0009] Furthermore, an air guide plate 2 is commonly fixed to one end of the second connecting rod away from the axis of the steel cylinder, an internal heating belt is fixed on the inner wall of the second air guide plate corresponding to the position of the external heating belt, and the bottom end of the second air guide plate is fixed to the top of the pad iron frame, so that the air is heated by the internal heating belt when entering between the second air guide plate and the inner lining of the furnace body.

[0010] Furthermore, the bottom of the pad frame is fixed to the top of the chassis, and ventilation holes are opened in a circular array on the outside of the pad frame. The inner diameter of the pad frame is equal to the inner diameter of the second air guide plate, and the outer diameter of the pad frame is equal to the outer diameter of the first air guide plate. The pad frame circulates hot air through the ventilation holes.

[0011] Furthermore, a plurality of snap-in grooves are fixed in a circular array at the bottom end of the support ring, and the snap-in grooves are movably connected to the top of the washer frame. When the support ring is working, it is snap-connected to the washer frame through the snap-in grooves, so that the support ring is well restrained on the washer frame.

[0012] Furthermore, a plurality of driving motors are fixed in a circular array on the top of the top cover, the output shafts of the driving motors are movably connected through the top cover, and a fan frame is fixed to the bottom end of the output shaft of the driving motor, an inner sealing cylinder is fixed through the bottom end of the top cover, the inner sealing cylinder is movably connected to the outside of the inner lining of the furnace body, the fan frame is arranged between the inner sealing cylinder and the outer sealing cylinder, and the fan frame is driven to rotate by the driving motor, so that hot air is transported during the rotation of the fan frame.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem that the uniformity of heat treatment furnace treatment of large annular parts is not good enough when heat treatment is carried out on large annular parts by arranging a chassis, a pad iron frame and a top cover. The driving motor is started, and the driving motor drives the fan frame to rotate, so that the fan frame rotates, and the air between the first air guide plate and the second air guide plate drops to contact the workpiece, and then the air is guided to the pad iron frame, and then the air blown from the top to the bottom through the ventilation holes when the pad iron frame is working is guided to the outer lining of the furnace body and the first air guide plate, the inner lining of the furnace body and the second air guide plate, and then heated by the external heating belt and the internal heating belt, and then rises to the position of the fan frame, and is blown to the workpiece by the rotation of the fan frame to carry out a heat cycle. In the process of the heat cycle, the air is fully heated by the external heating belt and the internal heating belt when heating, so that the workpiece is heated more evenly when working, so that the heat treatment furnace can heat the workpiece at the same time when working, and the heating uniformity is better.

[0015] The utility model solves the problem of insufficient balance in the support of a heat treatment furnace when heat treating a smaller workpiece by arranging an iron support frame. When working, the corresponding workpiece size is determined. When the workpiece is small, the workpiece is placed between air guide plate one and air guide plate two by a lifting device and supported by a corresponding support ring, so that the smaller workpiece can be well supported above the iron support frame, so that the support balance is better when the heat treatment furnace heat treats the smaller workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the cross-sectional structure of a heat treatment furnace for efficiently heating the inner and outer rings of large annular parts;

[0017] Figure 2 The following is a three-dimensional diagram of the chassis structure;

[0018] Figure 3 It is a three-dimensional diagram of the pad iron frame structure;

[0019] Figure 4 It is a three-dimensional diagram of the support ring structure;

[0020] Figure 5 It is a three-dimensional diagram of the top cover structure;

[0021] Figure 6 This is a three-dimensional diagram of the top cover structure when viewed from above;

[0022] Figure 7 This is a three-dimensional diagram of the complete structure of a heat treatment furnace for efficiently heating the inner and outer rings of large annular parts.

[0023] Reference numerals:

[0024] 1. Chassis; 101. Outer cylinder; 102. Outer lining of furnace body; 103. Connecting rod one; 104. External heating zone; 105. Air guide plate one; 106. Steel cylinder; 107. Inner lining of furnace body; 108. Connecting rod two; 109. Air guide plate two; 110. Internal heating zone; 2. Iron frame; 201. Ventilation hole; 202. Support ring; 203. Snap-in groove; 3. Top cover; 301. Drive motor; 302. Fan frame; 303. Inner sealing cylinder; 304. External sealing cylinder. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] See also Figure 1-7 As shown, the utility model is a large-scale annular inner and outer ring high-efficiency heating heat treatment furnace, comprising a chassis 1, a pad iron frame 2 and a top cover 3. An outer cylinder 101 is fixed at the edge of the top surface of the chassis 1. When the chassis 1 is working, the outer lining 102 of the furnace body is fixed therein through the outer cylinder 101, and the pad iron frame 2 and the top cover 3 are supported thereon by the chassis 1. The outer lining 102 of the furnace body is fixed on the inner wall of the outer cylinder 101. When the furnace body lining 102 is working, the heat generated by the corresponding external heating belt 104 is heated to The outer wall of the furnace body lining 102 is insulated, and a plurality of external heating belts 104 are fixed on the inner wall of the furnace body lining 102. When the external heating belts 104 are working, the air passing through the furnace body lining 102 and the air guide plate 105 is heated and guided to the top of the air guide plate 105, so that the temperature of the air will not drop during the circulation process. The spacing between the upper and lower adjacent external heating belts 104 is equal, so that the air can be fully and evenly heated during the work. The upper part of the inner wall of the furnace body lining 102 is fixed with a plurality of external heating belts 104 in a circular array. The connecting rod 103 is fixed with an air guide plate 105 at one end of the connecting rod 103 toward the inner axis of the outer cylinder 101. When the furnace body lining 102 is working, the air guide plate 105 is connected through the connecting rod 103, and the air guide plate 105 cooperates with the furnace body lining 107 to carry out heating and heat preservation. The lower end of the air guide plate 105 is fixed with a pad iron frame 2, and the workpiece is supported by the pad iron frame 2. The top of the pad iron frame 2 is provided with a support ring 202, and the support ring 202 cooperates to lower the pad iron frame. When the frame 2 is supported, the unbalanced support for smaller workpieces allows the processing furnace to better face the heat treatment of smaller components. The top ends of the outer cylinder 101 and the outer lining 102 of the furnace body are jointly provided with a top cover 3. When the top cover 3 is in operation, the heating area between the outer cylinder 101 and the steel cylinder 106 is closed. An outer sealing cylinder 304 is fixed to the outer side of the bottom end surface of the top cover 3. The outer sealing cylinder 304 is movably connected in the outer lining 102 of the furnace body, so that when working, it cooperates to close the gap between the outer lining 102 of the furnace body and the top cover 3.

[0027] Among them Figure 1 ,2 As shown, a steel cylinder 106 is fixed at the center of the top surface of the chassis 1, a furnace lining 107 is fixed on the circumference of the steel cylinder 106, and connecting rods 108 are fixed in a circular array on the upper part of the circumference of the furnace lining 107. When the chassis 1 is working, the furnace lining 107 is fixed thereon through the steel cylinder 106, and the air guide plate 109 is connected to the furnace lining 107 through the connecting rods 108.

[0028] Among them Figure 1 , 2 As shown, an end of the connecting rod 108 away from the axis of the steel cylinder 106 is fixed with an air guide plate 109, and an internal heating belt 110 is fixed on the inner wall of the air guide plate 109 corresponding to the position of the external heating belt 104. The bottom end of the air guide plate 109 is fixed to the top of the pad iron frame 2. The air guide plate 109 cooperates with the internal heating belt 110, so that the air passing through the space between the air guide plate 109 and the furnace lining 107 is heated and then guided to the top of the air guide plate 109.

[0029] Among them Figure 1-3 As shown, the bottom of the pad frame 2 is fixed on the top of the chassis 1, and ventilation holes 201 are opened in a circular array on the outside of the pad frame 2. The inner diameter of the pad frame 2 is equal to the inner diameter of the second air guide plate 109, and the outer diameter of the pad frame 2 is equal to the outer diameter of the first air guide plate 105. When the pad frame 2 is working, the air blown from the top to the bottom is guided to between the outer lining 102 and the first air guide plate 105 of the furnace body, and between the inner lining 107 and the second air guide plate 109 of the furnace body through the ventilation holes 201.

[0030] Among them Figure 1 , 3 As shown in Figure 4, a plurality of snap-in grooves 203 are fixed in a circular array at the bottom end of the support ring 202, and the snap-in grooves 203 are movably connected to the top of the pad frame 2. When the support ring 202 is working, it is clamped on the pad frame 2 through the snap-in grooves 203, so that the support ring 202 is restricted to the top of the pad frame 2 when working.

[0031] Among them Figure 1 , 5 As shown in Figure 6, a plurality of drive motors 301 are fixed on the top of the top cover 3 in a circular array, the output shafts of the drive motors 301 are movably connected in the top cover 3, and a fan frame 302 is fixed to the bottom end of the output shaft of the drive motor 301, an inner sealing cylinder 303 is fixed to the bottom end of the top cover 3, the inner sealing cylinder 303 is movably connected to the outside of the furnace body lining 107, and the fan frame 302 is arranged between the inner sealing cylinder 303 and the outer sealing cylinder 304. When the top cover 3 is working, the fan frame 302 is driven to rotate by the drive motor 301, so that the air guided to the space above the air guide plate 105 and the air guide plate 2 109 below the top cover 3 is driven and transported to the workpiece supported on the top of the pad iron frame 2.

[0032] The specific working principle of the utility model is as follows: when working, first determine the size of the corresponding workpiece when working. When the workpiece is small, put the workpiece between the air guide plate 105 and the air guide plate 2 109 through the lifting equipment, and be supported by the corresponding support ring 202, so that the smaller workpiece can be well supported above the pad iron frame 2. When the larger workpiece is heat-treated, the workpiece is directly lifted between the air guide plate 105 and the air guide plate 2 109 by the lifting equipment. After being supported by the pad iron frame 2, the inner sealing cylinder 303 at the bottom of the top cover 3 is set to the outside of the furnace body lining 107, and the outer sealing cylinder 304 is set on the inner wall of the furnace body lining 102. When the heat treatment is carried out, the drive motor 301 is started, and the drive motor 301 drives the fan frame 302 to rotate The fan frame 302 rotates, and the air between the air guide plate 1 105 and the air guide plate 2 109 drops to contact the workpiece, and then the air is guided to the pad iron frame 2. When the pad iron frame 2 is working, the air blown from the top to the bottom is guided to the space between the furnace body lining 102 and the air guide plate 1 105, the furnace body lining 107 and the air guide plate 2 109 through the ventilation hole 201. After being heated by the external heating belt 104 and the internal heating belt 110, it rises to the position of the fan frame 302, rotates through the fan frame 302, and blows onto the workpiece to perform a heat cycle. During the heat cycle, the air is fully heated by the external heating belt 104 and the internal heating belt 110, so that the workpiece is heated more evenly when working.

[0033] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A high-efficiency heat treatment furnace for inner and outer rings of large annular parts, comprising a base plate (1), a backing iron frame (2) and a top cover (3), characterized in that: An outer cylinder (101) is fixed at the edge of the top surface of the chassis (1), a furnace body outer lining (102) is fixed on the inner wall of the outer cylinder (101), a plurality of external heating belts (104) are fixed on the inner wall of the furnace body outer lining (102), the spacing between the upper and lower adjacent external heating belts (104) is equal, and a connecting rod (103) is fixed in a circular array on the upper part of the inner wall of the furnace body outer lining (102), and the connecting rod (103) is directed toward the outer cylinder (1 01) An air guide plate 1 (105) is fixed at one end of the inner axis, an iron frame (2) is fixed at the lower end of the air guide plate 1 (105), a support ring (202) is arranged at the top of the iron frame (2), a top cover (3) is arranged at the top end of the outer tube (101) and the furnace body outer lining (102), an outer sealing tube (304) is fixed on the outer side of the bottom end surface of the top cover (3), and the outer sealing tube (304) is movably connected in the furnace body outer lining (102).

2. A high-efficiency heat treatment furnace for inner and outer rings of large annular parts according to claim 1, characterized in that: A steel cylinder (106) is fixed at the center of the top surface of the chassis (1), a furnace body lining (107) is fixed around the steel cylinder (106), and connecting rods (108) are fixed in a circular array on the upper part of the inner side of the furnace body lining (107).

3. A high-efficiency heat treatment furnace for inner and outer rings of large annular parts according to claim 2, characterized in that: The end of the second connecting rod (108) away from the axis of the steel cylinder (106) is commonly fixed with a second air guide plate (109), and an internal heating belt (110) is fixed on the inner wall of the second air guide plate (109) corresponding to the position of the external heating belt (104), and the bottom end of the second air guide plate (109) is fixed to the top of the pad iron frame (2).

4. A high-efficiency heat treatment furnace for inner and outer rings of large annular parts according to claim 3, characterized in that: The bottom of the iron pad frame (2) is fixed to the top of the chassis (1), and ventilation holes (201) are provided in a ring array on the outside of the iron pad frame (2). The inner diameter of the iron pad frame (2) is equal to the inner diameter of the second air guide plate (109), and the outer diameter of the iron pad frame (2) is equal to the outer diameter of the first air guide plate (105).

5. The high-efficiency heat treatment furnace for inner and outer rings of large annular parts according to claim 1, characterized in that: A plurality of clamping grooves (203) are fixed in a ring array at the bottom end of the support ring (202), and the clamping grooves (203) are movably connected to the top of the pad iron frame (2).

6. The high-efficiency heat treatment furnace for inner and outer rings of large annular parts according to claim 1, characterized in that: A plurality of drive motors (301) are fixed in a circular array on the top of the top cover (3); output shafts of the drive motors (301) are movably connected through the top cover (3); a fan frame (302) is fixed at the bottom end of the output shaft of the drive motor (301); an inner sealing cylinder (303) is fixed through the bottom end of the top cover (3); the inner sealing cylinder (303) is movably connected to the outside of the furnace lining (107); and the fan frame (302) is arranged between the inner sealing cylinder (303) and the outer sealing cylinder (304).

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