Rotatable table type resistance furnace

Abstract

The utility model provides a rotatable table type resistance furnace which comprises a furnace shell, a furnace door is rotatably arranged on one side of the furnace shell, a hearth is arranged in the furnace shell, a heating resistance wire is arranged on the inner side face of the hearth, the bottom of the furnace shell is installed on an installation table, a plurality of supporting legs are arranged on the edge of the bottom of the installation table, and a storage rack is horizontally arranged at the bottom in the furnace shell. The bottom of the storage rack is perpendicularly connected with the supporting shaft, the supporting shaft penetrates through the bottom of the furnace shell and the mounting table, the mounting table is rotationally connected with the supporting shaft, and the supporting shaft is driven by a driving device to rotate. When the heating furnace is used, an object to be heated is placed on the supporting frame, and then the driving motor is controlled to drive the supporting frame to rotate slowly in the hearth, so that each surface of the object to be heated passes through the heating resistance wire alternately, and the object to be heated is prevented from being heated unevenly.

Description

TECHNICAL FIELD

[0001] The utility model relates to resistance furnace technical field, concretely is a rotatable bench resistance furnace. BACKGROUND

[0002] Resistance furnace is the heating equipment that utilizes electric current through resistance material to produce heat energy, is mainly used in industrial production. It makes the electric heating element or heating medium in the furnace heat through electric current, thereby carries out heating to workpiece or material. Resistance furnace has wide application in mechanical industry, including metal forging and pressing preheating, metal heat treatment, brazing, powder metallurgy sintering, glass ceramic calcination, low melting point metal melting and sand mould and paint film layer drying etc.

[0003] For example, the document number "CN216282783U" proposes a rotary type bench resistance furnace that can be uniformly heated, which places the workpiece to be heated in the rotating drum when in use, and the relevant record in the description is in paragraph

[0027] "close the sealing heat insulation door, start the motor to make the rotating drum rotate, and start the electric heating plate to start uniform heating". In the disclosure document, although the surface of the rotating drum is provided with holes, the objects located in the rotating drum cannot be directly baked by the resistance wire, and the heat radiation emitted by the resistance wire is blocked by the rotating drum, so that the heating speed of the objects in the rotating drum is slow. Therefore, we propose a rotatable bench resistance furnace. UTILITY MODEL CONTENT

[0004] The utility model provides a rotatable bench resistance furnace, has the advantage that the object to be heated is placed on the support frame, the drive motor drives the support frame to rotate slowly in the hearth, thereby avoiding uneven heating of the object to be heated, solving the problem proposed in the above background technology.

[0005] The technical scheme of the utility model is as follows: a rotatable bench resistance furnace, including furnace shell, one side of furnace shell is equipped with furnace door and is rotated, furnace shell is equipped with hearth in, hearth inside surface is equipped with heating resistance wire, furnace shell bottom is installed on installation platform, a plurality of support legs are equipped on installation platform bottom edge, horizontal support frame is equipped in furnace shell bottom, support frame bottom is connected with support shaft perpendicularly, support shaft penetrates furnace shell bottom and installation platform respectively, and installation platform and support shaft are connected rotatably, support shaft is driven to rotate by a drive device.

[0006] Preferably, the furnace door includes a sealing door, the sealing door surface is provided with a hearth plate, and the sealing door is rotatably connected with the furnace shell. When the sealing door is closed, the hearth plate seals the hearth.

[0007] Preferably, the shelf comprises a support frame, a strip-shaped seat is arranged in the middle of the support frame, two sides of the strip-shaped seat are connected with the support frame through a plurality of support rods, a fastening screw is vertically arranged in the middle of the strip-shaped seat, the support shaft is a hollow structure, the fastening screw is arranged in the support shaft, the bottom of the fastening screw extends out of the bottom of the support shaft, and a nut is arranged at the bottom of the fastening screw.

[0008] Preferably, a containing groove coaxial with the fastening screw is arranged on the top surface of the strip-shaped seat, the screw head at the top of the fastening screw is arranged in the containing groove, and the top surfaces of the screw head and the containing groove are flush.

[0009] Preferably, the mounting table and the bottom of the furnace chamber are each provided with a mounting hole, a support sleeve is arranged in the mounting hole, the top of the support sleeve extends into the furnace chamber, the support shaft is movably arranged in the support sleeve, the bottom of the support sleeve is rotatably connected with the support shaft, and the top of the support shaft extends above the top of the support sleeve.

[0010] Preferably, a flange is arranged on the support sleeve below the mounting table, and the flange is detachably connected with the bottom of the mounting table.

[0011] Preferably, the driving device comprises a driving motor arranged at one side of the bottom of the support shaft, a transmission wheel is arranged on the rotating shaft of the driving motor and the bottom of the support shaft respectively, the two transmission wheels are connected through a conveying belt, the driving motor is arranged on a mounting base, and the two ends of the mounting base are connected with the support legs.

[0012] Preferably, a bottom plate is further arranged below the mounting table, a control cabinet is arranged on the bottom plate, a controller is arranged in the control cabinet, and the controller is connected with the driving motor and the heating resistance wire.

[0013] Preferably, a temperature sensor is further arranged in the furnace chamber, and the temperature sensor is connected with the controller.

[0014] Compared with the prior art, in use, the object to be heated is placed on the support frame, then the driving motor is controlled to drive the support frame to slowly rotate in the furnace chamber, so that each surface of the object to be heated exchanges through the heating resistance wire, thereby avoiding uneven heating of the object to be heated. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 It is a structure schematic view of the sealing door of the present application after being opened.

[0017] Figure 2This is a schematic diagram of the structure of the sealing door after it is closed according to this utility model.

[0018] Figure 3 This is a schematic diagram of the specific installation structure of the support frame of this utility model.

[0019] Figure 4 This is a cross-sectional view of the specific installation structure of the support frame of this utility model.

[0020] In the diagram: 1. Furnace shell; 2. Furnace chamber; 3. Heating resistance wire; 4. Furnace chamber plate; 5. Sealing door; 6. Strip seat; 7. Receiving groove; 8. Mounting platform; 9. Support leg; 10. Support shaft; 11. Transmission wheel; 12. Control cabinet; 13. Base plate; 14. Mounting seat; 15. Drive motor; 16. Fastening screw; 17. Flange edge; 18. Support sleeve; 19. Support rod; 20. Support frame; 21. Mounting hole. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Reference Figures 1 to 4 This utility model provides a technical solution: a rotatable tabletop resistance furnace, including a furnace shell 1, a furnace chamber 2 inside the furnace shell 1, and a heating resistance wire 3 on the inner side of the furnace chamber 2. The heating resistance wire 3 heats the furnace chamber 2 when energized. Figure 1 As shown, a furnace door is rotatably provided on one side of the furnace shell 1. The specific structure of the furnace door includes a sealing door 5. Specifically, one side of the sealing door 5 is rotatably connected to the furnace shell 1. A furnace plate 4 is provided on the surface of the sealing door 5. The furnace plate 4 is made of the same material as the furnace chamber 2. When the sealing door 5 is closed, the furnace plate 4 seals the furnace chamber 2. The sealing door 5 and the furnace shell 1 are connected by a latch or door lock.

[0023] like Figure 1As shown, the furnace shell 1 is mounted on the mounting table 8, and a plurality of support legs 9 are arranged at the bottom edge of the mounting table 8. A bottom plate 13 is further arranged below the mounting table 8, and a control cabinet 12 is arranged on the bottom plate 13. A controller is arranged in the control cabinet 12, which is a control mainboard or a PLC logic controller. The controller is connected with the heating resistance wire 3. A temperature sensor is further arranged in the furnace chamber 2 and connected with the controller. The temperature sensor feeds back the temperature information in the furnace chamber 2 to the controller. The controller automatically controls the on-off of the heating resistance wire 3 according to the set temperature value, so as to realize automatic temperature control. A display screen and operation buttons are further arranged on the surface of the control cabinet 12. The temperature information is displayed on the display screen, and the temperature interval can be set by the operation buttons.

[0024] Further, when the heating resistance wire 3 is heated, a heating space is formed in the furnace chamber 2. The heat radiation is greater near the heating resistance wire 3 in the space. Therefore, in order to heat the heated object uniformly, for example, Figure 1 As shown, a shelf is horizontally arranged at the bottom of the furnace shell 1. The shelf includes a support frame 20. A strip-shaped seat 6 is arranged in the middle of the support frame 20. A plurality of strip-shaped seats 6 are connected with the support frame 20 through a plurality of support rods 19 at both sides of the strip-shaped seat 6. The plurality of strip-shaped seats 6 jointly form a support surface. The heated object is placed on the strip-shaped seat 6.

[0025] The shelf is rotatable. Specifically, the strip-shaped seat 6 is connected with the support shaft 10. The support shaft 10 penetrates the bottom of the furnace shell 1 and the mounting table 8. The mounting table 8 and the support shaft 10 are rotatably connected. The support shaft 10 is driven to rotate by a driving device. The driving device includes a driving motor 15 arranged at one side of the bottom of the support shaft 10. A transmission wheel 11 is arranged on the rotating shaft of the driving motor 15 and the bottom of the support shaft 10, respectively. The two transmission wheels 11 are connected through a transmission belt. The transmission wheel 11 is a sprocket, and the transmission belt is a transmission chain. The driving motor 15 is arranged on a mounting seat 14. The two ends of the mounting seat 14 are connected with the support legs 9. The driving motor 15 is connected with the controller.

[0026] Since the temperature in the furnace chamber 2 is high, and the shelf and the support shaft 10 are made of high-temperature-resistant metal materials, the heat conduction is good. In order to avoid the influence of high temperature on the driving motor 15, the driving motor 15 drives the support shaft 10 through the transmission chain, so that the high temperature on the support shaft 10 is not transmitted to the driving motor 15.

[0027] Further, the specific mounting structure between the shelf and the support shaft 10 is provided. Specifically, a fastening screw 16 is vertically arranged in the middle of the strip-shaped seat 6. A receiving groove 7 coaxial with the fastening screw 16 is arranged on the top surface of the strip-shaped seat 6. The screw head at the top of the fastening screw 16 is arranged in the receiving groove 7, and the top surfaces of the two are flush.

[0028] As shown,Figure 3 As shown, the support shaft 10 is a hollow structure, and the fastening screw 16 is placed in the support shaft 10. When installed, the bottom of the fastening screw 16 extends from the bottom of the support shaft 10, as shown in Figure 4 As shown, when the fastening screw 16 is placed inside the support shaft 10, the screw head of the fastening screw 16 is pressed against the strip-shaped seat 6, so that the screw head stably presses the support frame 20 on the top of the support shaft 10 without loosening. A nut is arranged at the bottom of the fastening screw 16, so that the fastening screw 16 can be tightened by rotating the nut.

[0029] It should be noted that the temperature of the medium and high temperature resistance furnace usually reaches above 800℃, and the internal temperature is high. If the strip-shaped seat 6 is directly connected to the top of the support shaft 10 by bolts, the bolts are easy to be oxidized in the high-temperature environment, so that the bolts lose the fastening effect of the strip-shaped seat 6, and the threads roasted by high temperature lose the fastening strength. The fastening screw 16 in the present application is a long screw, and the head thereof is exposed to the high-temperature environment during use, and the threaded part of the fastening screw 16 is placed in the support shaft 10 and is not directly roasted by high temperature.

[0030] Moreover, the strip-shaped seat 6, the support rod 19 and the support frame 20 will be oxidized and deformed after long-term use. When the shelf needs to be replaced, the bottom of the fastening screw 16 is loosened, the fastening screw 16 is pulled out from the support shaft 10, and the shelf can be replaced.

[0031] Further, as shown in Figure 3 The support shaft 10 is installed in the mounting table 8 in such a way that the mounting table 8 and the bottom of the hearth 2 are both provided with mounting holes 21, as shown in Figure 4 The support sleeve 18 is arranged in the mounting hole 21, and the top of the support sleeve 18 extends into the hearth 2. When installed, the support shaft 10 is movably arranged in the support sleeve 18, and it should be noted that the bottom of the support sleeve 18 is rotatably connected to the support shaft 10, so that the rotatable connection between the two is not directly roasted by high temperature, and the top of the support shaft 10 extends above the top of the support sleeve 18.

[0032] As shown in Figure 3 and Figure 4 The flange edge 17 is arranged on the support sleeve 18 below the mounting table 8, and the flange edge 17 is detachably connected to the bottom of the mounting table 8, and the two are fixed by bolts.

[0033] Based on the above embodiment, the rotatable table type resistance furnace provided by the application is used as follows: the object to be heated is placed on the support frame 20, then the sealing door 5 is closed, the driving motor 15 is controlled to drive the support shaft 10 to rotate, so that the support shaft 10 drives the support frame 20 to rotate slowly in the hearth, so that each surface of the object to be heated exchanges through the heating resistance wire 3, thereby avoiding uneven heating of the object to be heated.

[0034] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotatable table resistance furnace, comprising a furnace shell (1), a furnace door is rotatably arranged on one side of the furnace shell (1); a support frame is horizontally arranged on the bottom of the furnace shell (1); the bottom of the support frame is vertically connected with a support shaft (10), the support shaft (10) penetrates through the bottom of the furnace shell (1) and a mounting table (8) respectively, the mounting table (8) and the support shaft (10) are rotatably connected, and the support shaft (10) is driven to rotate by a driving device. The furnace shell (1) is internally provided with a hearth (2), the inner side of the hearth (2) is provided with heating resistance wire (3), the bottom of the furnace shell (1) is installed on the installation table (8), a plurality of supporting legs (9) are arranged on the bottom edge of the installation table (8), characterized in that, The furnace door comprises a sealing door (5), a hearth plate (4) is arranged on the surface of the sealing door (5), one side of the sealing door (5) is rotatably connected with the furnace shell (1), and the hearth plate (4) seals the hearth (2) after the sealing door (5) is closed. The support frame comprises a support frame (20), a strip-shaped seat (6) is arranged in the middle of the support frame (20), and the two sides of the strip-shaped seat (6) are connected with the support frame (20) through a plurality of support rods (19) respectively; 2. Rotatable table resistance furnace according to claim 1, characterized in that The middle part of the strip-shaped seat (6) is vertically penetrated by a fastening screw (16); 3. The rotatable table resistance furnace as claimed in claim 1, wherein, The support shaft (10) is a hollow structure, the bottom of the fastening screw (16) is arranged in the support shaft (10), the bottom of the fastening screw (16) extends out from the bottom of the support shaft (10), and a nut for fixing the fastening screw (16) is arranged at the bottom of the fastening screw (16). A containing groove (7) coaxial with the fastening screw (16) is arranged on the top surface of the strip-shaped seat (6), the screw head at the top of the fastening screw (16) is arranged in the containing groove (7), and the top of the fastening screw (16) is flush with the top of the containing groove (7). The mounting table (8) and the bottom of the hearth (2) are both provided with a mounting hole (21), a support sleeve (18) is arranged in the mounting hole (21), and the top of the support sleeve (18) extends into the hearth (2); 4. Rotatable table resistance furnace according to claim 3, characterized in that The support shaft (10) is movably arranged in the support sleeve (18), the bottom of the support sleeve (18) is rotatably connected with the support shaft (10), and the top of the support shaft (10) extends above the top of the support sleeve (18).

5. A rotatable table resistance furnace as claimed in claim 4, wherein, A flange (17) is arranged on the support sleeve (18) below the mounting table (8), and the flange (17) is detachably connected with the bottom of the mounting table (8). The driving device comprises a driving motor (15) arranged on one side of the bottom of the support shaft (10), a transmission wheel (11) is arranged on the rotating shaft of the driving motor (15) and the bottom of the support shaft (10) respectively, and the two transmission wheels (11) are connected through a transmission belt; 6. A rotatable table resistance furnace as claimed in claim 5, wherein, The driving motor (15) is mounted on a mounting seat (14), and the two ends of the mounting seat (14) are connected with support legs (9) respectively.

7. A rotatable table resistance furnace as claimed in claim 6, wherein, A bottom plate (13) is further arranged below the mounting table (8), a control cabinet (12) is arranged on the bottom plate (13), a controller is arranged in the control cabinet (12), and the controller is connected with the driving motor (15) and the heating resistance wire (3) respectively. A temperature sensor is further arranged in the hearth (2), and the temperature sensor is connected with the controller.

8. A rotatable table resistance furnace as claimed in claim 7, wherein, ​ 9. Rotatable table resistance furnace according to claim 8, characterized in that ​

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