Movable heat treatment furnace with partition heating function

Abstract

According to the technical scheme, the movable heat treatment furnace is characterized in that a D-shaped furnace bottom and a furnace door are arranged at one end of a base, a rail is additionally arranged on the base, a U-shaped steel frame is arranged above the rail, a driving device is arranged at the bottom of the U-shaped steel frame, and a D-shaped furnace body is arranged above the U-shaped steel frame; a furnace bottom heating area is arranged on the D-shaped furnace bottom, a furnace door heating area is arranged on the side, close to the D-shaped furnace body, of the furnace door, a plurality of furnace body heating areas are arranged on the inner side of the D-shaped furnace body, the rated heating power among the heating areas is different, a plurality of heating subareas are arranged in each heating area, and a resistance tape, a wiring board set and a thermocouple are arranged in each heating subarea. The resistance bands in the furnace door heating area and the furnace body heating area are symmetrical along the vertical center line of the heating subarea, and the resistance bands in the furnace door heating area and the furnace body heating area are arranged in a mode that the upper portions are sparse and the lower portions are dense. The heat treatment furnace has the beneficial effects that the consistency and uniformity of the furnace temperature in heat treatment are improved, and the problems that large workpieces are inconvenient to enter and exit from the furnace and the safety is low are solved.

Description

Technical Field

[0001] The utility model relates to the field of heat treatment furnaces, in particular to a movable heat treatment furnace with zone heating. Background Art

[0002] Heat treatment process is an important part of industrial production. It can improve the toughness, hardness, strength and other properties of workpieces, but if the process is not handled properly, it will lead to a series of quality problems. The consistency and uniformity of furnace temperature during heat treatment can directly affect the performance of the workpiece and product quality. For example, excessive internal stress (such as temperature stress and structural stress) in the workpiece caused by uneven temperature distribution can cause the workpiece to crack. Some large workpieces such as those used in the aviation field have higher requirements for temperature uniformity, but the existing heat treatment furnaces use overall heating or simply perform high and low temperature zoning to control the furnace temperature, which cannot meet the needs of industrial production. In addition, the existing heat treatment furnace structure makes it inconvenient for large workpieces to enter and exit the furnace, and has low safety. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a movable heat treatment furnace with zoned heating, so as to improve the consistency and uniformity of the furnace temperature during heat treatment and solve the problems of inconvenience in putting large workpieces in and out of the furnace and low safety.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a movable heat treatment furnace with zoned heating, comprising a track and a furnace door, a D-shaped furnace bottom is arranged at one end of the base, a furnace door is arranged at one end of the straight side of the D-shaped furnace bottom, a track is arranged on the base, the track comprises an outer track and an inner track, the outer track is located at both sides of the D-shaped furnace bottom, the inner track is located between the two outer tracks, a U-shaped steel frame is arranged above the track, a driving device matching the track is arranged at the bottom of the U-shaped steel frame, a D-shaped furnace body is arranged above the U-shaped steel frame, one end of the D-shaped furnace body close to the furnace door is open, and a sealing groove is arranged at the inner side of the D-shaped furnace body in contact with the furnace bottom;

[0005] A furnace bottom heating zone is provided on the D-shaped furnace bottom, a furnace door heating zone is provided on the side of the furnace door close to the D-shaped furnace body, and multiple furnace body heating zones are provided inside the D-shaped furnace body. The rated heating powers of the furnace bottom heating zone, the furnace door heating zone and the furnace body heating zone are different. Multiple heating partitions are provided in each heating zone, and each heating partition is provided with a resistance belt, a terminal board group and a thermocouple. The lead-out end of the resistance belt is connected to one end of the terminal board group in the furnace cavity. The resistance belts in the furnace door heating zone and the furnace body heating zone are symmetrical along the vertical center line of the heating partition, and the resistance belts in the furnace door heating zone and the furnace body heating zone are arranged sparsely at the top and densely at the bottom.

[0006] Furthermore, the base is provided with a No. 1 wire trough and a No. 2 wire trough, wherein the No. 1 wire trough is located on one side of the straight edge of the D-shaped furnace bottom, and the No. 2 wire trough is located on the side of the outer track away from the D-shaped furnace bottom, and the No. 1 wire trough and the No. 2 wire trough are vertically arranged.

[0007] Furthermore, the D-shaped furnace bottom is provided with a furnace bottom, a furnace platform, and a furnace platform base in order from top to bottom;

[0008] A furnace bottom plate is provided on the top surface of the furnace bottom, and the furnace bottom plate is located above the resistance belt;

[0009] A sealing guard plate matching the sealing groove is provided on the periphery of the furnace platform;

[0010] An inspection room is arranged in the base of the furnace platform, a ventilation hole is arranged at one end of the straight side of the base of the furnace platform, an inspection door is arranged at one end of the curved side of the base of the furnace platform, and a step matching the inspection door is arranged on the base.

[0011] Furthermore, the furnace bottom heating zone includes furnace bottom zone 1, furnace bottom zone 2, furnace bottom zone 3, and furnace bottom zone 4. The rated heating power of each furnace bottom heating zone is the same, and the resistance belt in each furnace bottom heating zone adopts a single Y-shaped connection method;

[0012] The furnace door heating zone includes furnace door zone 1 and furnace door zone 2. The rated heating power of each furnace door heating zone is the same. The resistance belt in each furnace door heating zone adopts a double Y-shaped connection method.

[0013] The furnace body heating zones include side wall zone 1, side wall zone 2, side wall zone 3, side wall zone 4, side wall zone 5, side wall zone 6, side wall zone 7, and side wall zone 8. The rated heating power of each furnace body heating zone is the same, and the resistance belt in each furnace body heating zone adopts a double Y-shaped connection method.

[0014] Furthermore, the D-shaped furnace bottom, furnace door and D-shaped furnace body are provided with a plurality of wiring through-holes matching the terminal block group and thermocouple through-holes matching the thermocouples, and the outer side of the furnace door and the outer side of the D-shaped furnace body are provided with wire guards matching the terminal block group and the thermocouples.

[0015] Furthermore, the wiring through holes and thermocouple through holes on the furnace door and the D-shaped furnace body are symmetrically distributed along the center line of each heating zone.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) According to the principle of rising hot air flow, the resistance belts in the furnace door heating zone and the furnace body heating zone are arranged sparsely in the upper part and densely in the lower part. The resistance belts in the furnace door heating zone and the furnace body heating zone are symmetrical along the vertical center line of the heating zone, which not only improves the consistency and uniformity of the furnace temperature, but also reduces energy consumption.

[0018] (2) The furnace adopts zone heating. Different heating zones are independent of each other and have different rated heating powers. Each heating zone is equipped with multiple heating zones. Each heating zone is independent and can control the local temperature in the furnace according to the temperature rise situation.

[0019] (3) The furnace bottom and furnace door are fixed on the base. When opening or closing the heat treatment furnace, only the furnace body needs to be moved, which facilitates the entry and exit of large workpieces and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front oblique structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0022] Figure 3 It is a side cross-sectional structural schematic diagram of the utility model;

[0023] Figure 4 For this utility model Figure 3 A partial enlarged view of point B in the middle;

[0024] Figure 5 It is a side view structural schematic diagram of the utility model;

[0025] Figure 6 For this utility model Figure 5 Schematic diagram of the cross-sectional structure at C in the middle;

[0026] Figure 7 This is a schematic diagram of the furnace bottom heating zone structure of the utility model;

[0027] Figure 8 This is a schematic diagram of the heating area structure of the furnace door described in the utility model;

[0028] Fig. 9 This is a schematic diagram of the furnace heating zone structure of the utility model;

[0029] Fig.10 This is a schematic diagram of the structure of the side wall zone 1 of the utility model;

[0030] In the figure: 1. base; 11. track; 111. outer track; 112. inner track; 12. No. 1 wire duct; 13. No. 2 wire duct; 14. ladder; 2. D-shaped furnace bottom; 21. furnace bottom heating zone; 211 furnace bottom zone 1; 212 furnace bottom zone 2; 213 furnace bottom zone 3; 214 furnace bottom zone 4; 22 furnace bottom; 221. furnace bottom plate; 23. furnace platform; 231. sealing guard plate; 24. furnace platform base; 241. maintenance room; 242. ventilation hole; 243. inspection door; 3. furnace door; 31. furnace door Heating zone; 311, furnace door zone 1; 312, furnace door zone 2; 4, D-shaped furnace body; 41, furnace body heating zone; 411, side wall zone 1; 412, side wall zone 2; 413, side wall zone 3; 414, side wall zone 4; 415, side wall zone 5; 416, side wall zone 6; 417, side wall zone 7; 418, side wall zone 8; 42, sealing groove; 43, U-shaped steel frame; 44, driving device; 5, resistance belt; 6, terminal block group; 61, wiring hole; 7, thermocouple; 71, thermocouple hole; 8, wire guard. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0032] like Figure 1-10 A movable heat treatment furnace for zoned heating includes a track 11 and a furnace door 3. A D-shaped furnace bottom 2 is provided at one end of a base 1, and a furnace door 3 is provided at one end of a straight side of the D-shaped furnace bottom 2. A track 11 is provided on the base 1, and the track 11 includes an outer track 111 and an inner track 112. The outer track 111 is located on both sides of the D-shaped furnace bottom 2 to ensure that the D-shaped furnace body 4 can be completely closed with the D-shaped furnace bottom 2 and the furnace door 3. The inner track 112 is located between the two outer tracks 111 to make the movement of the D-shaped furnace body 4 more stable. A U-shaped steel frame 43 is arranged above the track 11 to realize the connection between the driving device 44 and the D-shaped furnace body 4. A driving device 44 matching the track 11 is arranged at the bottom of the U-shaped steel frame 43. The driving device 44 is powered and automatically controlled to realize the movement of the D-shaped furnace body 4. A D-shaped furnace body 4 is arranged above the U-shaped steel frame 43. The shape of the D-shaped furnace body 4 matches the shape of the D-shaped furnace bottom 2. One end of the D-shaped furnace body 4 close to the furnace door 3 is open, and a sealing groove 42 is arranged on the inner side of the D-shaped furnace body 4 at a portion in contact with the furnace bottom.

[0033] A furnace bottom heating zone 21 is provided on the D-shaped furnace bottom 2, a furnace door heating zone 31 is provided on the side of the furnace door 3 close to the D-shaped furnace body 4, and a plurality of furnace body heating zones 41 are provided on the inner side of the D-shaped furnace body 4. The rated heating powers of the furnace bottom heating zone 21, the furnace door heating zone 31 and the furnace body heating zone 41 are different. Different heating zones are independent of each other and are zoned according to actual workpiece and temperature requirements. Multiple heating zones are provided in each heating zone, and each heating zone is independent. The local temperature in the furnace can be controlled according to the temperature rise situation. Each heating zone A resistance belt 5, a terminal block group 6 and a thermocouple 7 are provided inside. The thermocouple 7 performs temperature detection on each heating zone, so that the temperature of each zone in the furnace can be more comprehensively understood. The lead-out end of the resistance belt 5 is connected to one end of the terminal block group 6 in the furnace cavity. The resistance belts 5 in the furnace door heating zone 31 and the furnace body heating zone 41 are symmetrical along the vertical center line of the heating zone, so that the temperature in the furnace is more uniform. The resistance belts 5 in the furnace door heating zone 31 and the furnace body heating zone 41 are arranged sparsely in the upper part and densely in the lower part. The spacing of the resistance belts 5 is 50-400 mm when sparse, preferably 200 mm, and is 30-300 mm when dense, preferably 80 mm, following the principle of rising hot air flow to improve the consistency and uniformity of the furnace temperature;

[0034] Furthermore, the base 1 is provided with a No. 1 wire trough 12 and a No. 2 wire trough 13, the No. 1 wire trough 12 is located on one side of the straight side of the D-shaped furnace bottom 2, the heating equipment line and the ventilation equipment line on the D-shaped furnace bottom 2 and the furnace door 3 are installed in the No. 1 wire trough 12, the No. 2 wire trough 13 is located on the side of the outer track 111 away from the D-shaped furnace bottom 2, the heating equipment line of the D-shaped furnace body 4 and the electric control line of the drive device 44 are installed in the No. 2 wire trough 13, the No. 1 wire trough 12 and the No. 2 wire trough 13 are vertically arranged, and the No. 1 wire trough 12 and the No. 2 wire trough 13 are connected to realize centralized control of the equipment;

[0035] Furthermore, the D-shaped furnace bottom 2 is provided with a furnace bottom 22, a furnace platform 23, and a furnace platform base 24 in sequence from top to bottom;

[0036] A furnace bottom plate 221 is provided on the top surface of the furnace bottom 22. The furnace bottom plate 221 is located above the resistance belt 5 to separate the workpiece to be heated from the resistance belt 5 to prevent overheating or adhesion.

[0037] A sealing guard plate 231 matching the sealing groove 42 is provided on the periphery of the furnace platform 23 to improve the sealing performance of the heat treatment furnace;

[0038] An inspection room 241 is provided in the furnace base 24, which can be used for inspection without affecting the normal use of heat treatment, reducing the interruption time of operation and improving efficiency. A ventilation hole 242 is provided at one end of the straight side of the furnace base 24 to realize the ventilation of the inspection room 241, provide a good working environment for the maintenance personnel, and realize the wiring of the heating, ventilation, lighting, temperature detection and other equipment in the D-shaped furnace bottom 2. An inspection door 243 is provided at one end of the arc of the furnace base 24, and a step 14 matching the inspection door 243 is provided on the base 1, which is convenient for the inspection of the heating equipment in the D-shaped furnace bottom 2.

[0039] Further, the furnace bottom heating zone 21 includes a furnace bottom zone 1 211, a furnace bottom zone 212, a furnace bottom zone 3 213, and a furnace bottom zone 4 214. The rated heating power of each furnace bottom heating zone is the same, and the rated heating power is 200-240 kW, preferably 220 kW. The resistance belt 5 in each furnace bottom heating zone adopts a single Y-shaped connection method;

[0040] The furnace door heating zone 31 includes a furnace door zone 1 311 and a furnace door zone 2 312. The rated heating power of each furnace door heating zone is the same, 320-380 kW, preferably 342 kW. The resistance belt 5 in each furnace door heating zone adopts a double Y-shaped connection method.

[0041] The furnace heating zone 41 includes a side wall zone 1 411, a side wall zone 2 412, a side wall zone 3 413, a side wall zone 414, a side wall zone 5 415, a side wall zone 6 416, a side wall zone 7 417, and a side wall zone 8 418. The rated heating power of each furnace heating zone is the same, and the rated heating power is 220-260 kW, preferably 242 kW. The resistance belt 5 in each furnace heating zone adopts a double Y-shaped connection method;

[0042] Furthermore, the D-shaped furnace bottom 2, the furnace door 3 and the D-shaped furnace body 4 are provided with a plurality of wiring through holes 61 matching the wiring board group 6 and thermocouple through holes 71 matching the thermocouple 7, which are convenient for wiring outside the furnace, and the outer side of the furnace door 3 and the outer side of the D-shaped furnace body 4 are provided with a wire guard 8 matching the wiring board group 6 and the thermocouple 7 to provide protection for the heating equipment line and the temperature detection line;

[0043] Furthermore, the wiring through holes 61 and the thermocouple through holes 71 on the furnace door 3 and the D-shaped furnace body 4 are symmetrically distributed along the center line of each heating zone, and the position of the wiring through holes 61 matches the position of the lead-out end of the resistance belt 5 .

[0044] When using:

[0045] The resistance belt 5, the terminal block group 6 and the thermocouple 7 are installed in the furnace bottom heating zone 21, the furnace door heating zone 31 and the furnace body heating zone 41. The terminal block group 6 and the thermocouple 7 pass through the wiring through hole 61 and the thermocouple through hole 71. The equipment line of the D-shaped furnace bottom 2 passes through the ventilation hole 242 from the maintenance room 241 and is installed in the No. 1 wire groove 12. The front half of the equipment line of the furnace door 3 is provided with a wire guard 8 on the periphery, and the rear half is installed in the No. 1 wire groove 12. The front half of the equipment line of the D-shaped furnace body 4 is provided with a wire guard 8 on the periphery. The rear half of the equipment line of the D-shaped furnace body 4 and the electric control line of the drive device 44 are installed in the No. 2 wire groove 13. The furnace bottom plate 221 is laid above the resistance belt 5 in the furnace bottom heating zone 21;

[0046] Lift the workpiece to the center of the D-shaped furnace bottom 2, then start the driving device 44 to move the D-shaped furnace body 4 toward the furnace door, so that the sealing groove 42 fits with the sealing guard plate 231, and the heat treatment furnace is closed. According to actual process needs, the furnace bottom heating zone 21, the furnace door heating zone 31 and the furnace body heating zone 41 are opened, and the single heating zone is regulated according to actual conditions to improve the consistency and uniformity of the temperature in the furnace.

[0047] The resistance bands 5 in the furnace door heating zone 31 and the furnace body heating zone 41 are arranged sparsely in the upper part and densely in the lower part. The resistance bands 5 in the furnace door heating zone 31 and the furnace body heating zone 41 are symmetrical along the vertical center line of the heating zone, which not only improves the consistency and uniformity of the furnace temperature, but also reduces energy consumption. The furnace adopts zone heating. Different heating zones are independent of each other and have different rated heating powers. They can be zoned according to actual workpiece and temperature requirements. Each heating zone is provided with multiple heating zones, each of which is independent and can control the local temperature in the furnace according to the temperature rise situation. The D-shaped furnace bottom 2 and the furnace door 3 are fixed on the base 1. When opening or closing the heat treatment furnace, only the D-shaped furnace body 4 is moved, which is convenient for large workpieces to enter and exit the furnace and improves safety.

[0048] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A movable heat treatment furnace with zoned heating, comprising a track (11) and a furnace door (3), characterized in that: A D-shaped furnace bottom (2) is provided at one end of the base (1), a furnace door (3) is provided at one end of the straight side of the D-shaped furnace bottom (2), a track (11) is provided on the base (1), the track (11) comprises an outer track (111) and an inner track (112), the outer track (111) is located on both sides of the D-shaped furnace bottom (2), the inner track (112) is located between the two outer tracks (111), a U-shaped steel frame (43) is provided above the track (11), a driving device (44) matching the track (11) is provided at the bottom of the U-shaped steel frame (43), a D-shaped furnace body (4) is provided above the U-shaped steel frame (43), one end of the D-shaped furnace body (4) close to the furnace door (3) is open, and a sealing groove (42) is provided at the inner side of the D-shaped furnace body (4) in contact with the furnace bottom; A furnace bottom heating zone (21) is provided on the D-shaped furnace bottom (2), a furnace door heating zone (31) is provided on a side of the furnace door (3) close to the D-shaped furnace body (4), and a plurality of furnace body heating zones (41) are provided on the inner side of the D-shaped furnace body (4). The rated heating powers of the furnace bottom heating zone (21), the furnace door heating zone (31) and the furnace body heating zone (41) are different. A plurality of heating subzones are provided in each heating zone. Each heating subzone is provided with a resistance band (5), a terminal block group (6) and a thermocouple (7). The lead-out end of the resistance band (5) is connected to one end of the terminal block group (6) in the furnace cavity. The resistance bands (5) in the furnace door heating zone (31) and the furnace body heating zone (41) are symmetrical along the vertical center line of the heating subzones. The resistance bands (5) in the furnace door heating zone (31) and the furnace body heating zone (41) are arranged sparsely in the upper part and densely in the lower part.

2. A movable heat treatment furnace with zoned heating according to claim 1, characterized in that: The base (1) is provided with a first wire groove (12) and a second wire groove (13), wherein the first wire groove (12) is located on one side of the straight edge of the D-shaped furnace bottom (2), and the second wire groove (13) is located on a side of the outer track (111) away from the D-shaped furnace bottom (2), and the first wire groove (12) and the second wire groove (13) are arranged vertically.

3. The movable heat treatment furnace with zoned heating according to claim 1, characterized in that: The D-shaped furnace bottom (2) is provided with a furnace bottom (22), a furnace platform (23), and a furnace platform base (24) in order from top to bottom; A furnace bottom plate (221) is provided on the top surface of the furnace bottom (22), and the furnace bottom plate (221) is located above the resistance belt (5); A sealing guard plate (231) matching the sealing groove (42) is provided on the periphery of the furnace table (23); An inspection room (241) is provided in the furnace base (24), a ventilation hole (242) is provided at one end of the straight side of the furnace base (24), an inspection door (243) is provided at one end of the curved side of the furnace base (24), and a step (14) matching the inspection door (243) is provided on the base (1).

4. The movable heat treatment furnace with zoned heating according to claim 1, characterized in that: The furnace bottom heating zone (21) comprises a furnace bottom zone 1 (211), a furnace bottom zone 2 (212), a furnace bottom zone 3 (213), and a furnace bottom zone 4 (214), the rated heating power of each furnace bottom heating zone being the same, and the resistance band (5) in each furnace bottom heating zone adopts a single Y-shaped connection method; The furnace door heating zone (31) comprises a furnace door zone 1 (311) and a furnace door zone 2 (312), the rated heating power of each furnace door heating zone is the same, and the resistance band (5) in each furnace door heating zone adopts a double Y-shaped connection method; The furnace body heating zone (41) comprises a side wall zone 1 (411), a side wall zone 2 (412), a side wall zone 3 (413), a side wall zone 4 (414), a side wall zone 5 (415), a side wall zone 6 (416), a side wall zone 7 (417), and a side wall zone 8 (418). The rated heating power of each furnace body heating zone is the same, and the resistance band (5) in each furnace body heating zone adopts a double Y-shaped connection method.

5. The movable heat treatment furnace with zoned heating according to claim 1, characterized in that: The D-shaped furnace bottom (2), the furnace door (3) and the D-shaped furnace body (4) are provided with a plurality of wiring through holes (61) matching the wiring board group (6) and thermocouple through holes (71) matching the thermocouple (7), and the outer side of the furnace door (3) and the outer side of the D-shaped furnace body (4) are provided with a wire guard (8) matching the wiring board group (6) and the thermocouple (7).

6. The movable heat treatment furnace with zoned heating according to claim 5, characterized in that: The wiring through holes (61) and the thermocouple through holes (71) on the furnace door (3) and the D-shaped furnace body (4) are symmetrically distributed along the vertical center line of each heating zone.

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