Tubular furnace with multiple temperature zones

Abstract

The utility model relates to the technical field of tube furnaces, in particular to a multi-temperature-zone tube furnace. The multi-temperature-zone tubular furnace comprises a furnace body which comprises a heating pipe and a pull rod partially extending into the heating pipe; the driving assembly is arranged on one side of the furnace body and comprises a first support, a supporting plate and a power piece, the supporting plate and the power piece are arranged on the first support, the power piece is arranged on the side face of the supporting plate, the driving end of the power piece is connected with the pull rod, the power piece drives the pull rod to move in the central axis direction of the heating pipe, and the power piece directly drives the pull rod to move. The device has the advantage of simple structure, so that the cost is effectively reduced, and the operation is relatively simple. The multi-temperature-zone tubular furnace overcomes the defects that a driving structure used for driving a pull rod to move in an existing tubular furnace is complex in structure and high in cost, and therefore the multi-temperature-zone tubular furnace is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of tubular furnaces, in particular to a multi-temperature zone tubular furnace. Background Art

[0002] Heat storage technology is an important technology for improving energy efficiency and protecting the environment. It can be used to solve the contradiction between the supply and demand of thermal energy. It has important application prospects in the fields of solar thermal utilization, electricity "peak shaving and valley filling", waste heat utilization, and energy saving in industrial and civil buildings and air conditioning. Among them, the heat storage performance of heat transfer and storage materials is the technical key of heat storage technology, and the test of cyclic thermal stability under the working conditions of heat transfer and storage materials is the difficulty in the basic performance test of heat transfer and storage materials.

[0003] Current cyclic thermal stability tests of heat transfer and storage materials mostly rely on manual conversion of heat transfer and storage materials between high temperature and room temperature. However, for cyclic tests that are often performed thousands of times, this method is obviously not economical or fast enough, and room temperature is not the operating temperature for molten salt materials. This test has certain significance for theoretical research, but is not accurate enough for practical applications. In addition, automatic cyclic testing can be performed using equipment such as DSC, but the number of times is limited and the materials are mostly powders, so it is not suitable for solid phase change composite materials with a certain structure.

[0004] In scientific research and production, a tubular furnace is one of the main equipment for heat treatment, burning and reduction of samples. The existing driving device of the pull rod of the tubular furnace is often more complicated in structure, which increases the purchase cost and makes the operation more complicated. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the defects of the tubular furnace in the prior art, that is, the driving structure for driving the pull rod to move has a complex structure and high cost, thereby providing a multi-temperature zone tubular furnace.

[0006] In order to solve the above problems, the utility model provides a multi-temperature zone tubular furnace, comprising:

[0007] A furnace body, the furnace body comprising a heating tube and a pull rod partially extending into the heating tube;

[0008] A driving assembly is provided on one side of the furnace body, and the driving assembly includes a first bracket, and a support plate and a power member arranged on the first bracket. The power member is arranged on the side of the support plate, and the driving end of the power member is connected to the pull rod, and the power member drives the pull rod to move along the central axis direction of the heating tube.

[0009] Optionally, a limit plate is fixed to the portion of the pull rod extending out of the heating tube, and the limit plate is perpendicular to the length direction of the pull rod.

[0010] Optionally, one end of the pull rod extending into the heating tube is fixedly connected to a storage dish.

[0011] Optionally, the heating tube is arranged to pass through the furnace body, and sealing flanges are respectively provided at both ends of the heating tube.

[0012] Optionally, the furnace body includes an insulating inner shell and at least one insulating board, the insulating inner shell and the insulating board are arranged in the furnace body, the insulating inner shell is sleeved on the outer periphery of the heating tube, and the insulating board divides the insulating inner shell into at least two heating areas.

[0013] Optionally, the furnace body includes a box body and an outer shell, wherein the outer shell is arranged above the box body, and the outer shell wraps the heat-insulating inner shell.

[0014] Optionally, arc blocks are respectively provided on both sides of the outer circumference of the shell, and the arc blocks are respectively connected to the shell and the box body.

[0015] Optionally, second brackets are respectively provided at both ends of the shell, and the shell is fixedly connected to the box body through the second brackets.

[0016] Optionally, it also includes at least one thermometer, a display screen, a temperature control panel, a start-stop button and a controller. The thermometer is arranged in the heating area, and the side of the box body is provided with a display screen, a start-stop button and a temperature control panel. The controller is respectively connected to the thermometer, the start-stop button, the display screen, the temperature control panel and the power circuit.

[0017] Optionally, the heating tube is made of quartz tube or alumina tube.

[0018] The technical solution of the utility model has the following advantages:

[0019] 1. The multi-temperature zone tubular furnace provided by the utility model comprises: a furnace body comprising a heating tube and a pull rod partially extending into the heating tube; a driving assembly is provided on one side of the furnace body, the driving assembly comprises a first bracket, and a support plate and a power member provided on the first bracket, the power member is provided on the side of the support plate, the driving end of the power member is connected to the pull rod, the power member drives the pull rod to move along the central axis direction of the heating tube, and the pull rod is directly driven to move by the power member, which has the advantages of simple structure, effectively reduces costs, and is relatively simple to operate.

[0020] 2. In the multi-temperature zone tubular furnace provided by the utility model, the portion of the pull rod extending outside the heating tube is fixed with a limit plate, the limit plate is perpendicular to the length direction of the pull rod, and the limit portion limits the depth of the pull rod entering the heating tube.

[0021] 3. In the multi-temperature zone tubular furnace provided by the utility model, one end of the pull rod extending into the heating tube is fixedly connected with a storage dish, and the storage dish is used to store samples.

[0022] 4. In the multi-temperature zone tubular furnace provided by the utility model, the heating tube is arranged to pass through the furnace body, and sealing flanges are respectively provided at both ends of the heating tube to prevent the heat in the heating tube from dissipating outside the heating tube.

[0023] 5. The multi-temperature zone tubular furnace provided by the utility model comprises a furnace body including an insulating inner shell and at least one insulating board. The insulating inner shell and the insulating board are arranged in the furnace body. The insulating inner shell is sleeved on the outer periphery of the heating tube. The insulating board divides the insulating inner shell into at least two heating zones to form multiple temperature zones.

[0024] 6. The multi-temperature zone tubular furnace provided by the utility model comprises a box body and an outer shell, the outer shell is arranged above the box body, the outer shell wraps the heat-insulating inner shell inside, and the outer shell and the box body further enhance the heat-insulating effect of the furnace body.

[0025] 7. In the multi-temperature zone tubular furnace provided by the utility model, arc blocks are respectively provided on both sides of the outer circumference of the shell, and the arc blocks are respectively connected to the shell and the box body to achieve the fixation of the shell and the box body.

[0026] 8. The multi-temperature zone tubular furnace provided by the utility model has second brackets at both ends of the shell, the shell is fixedly connected to the box body through the second brackets, and the second brackets cooperate with the arc block to fix the shell and the box body.

[0027] 9. The multi-temperature zone tubular furnace provided by the utility model also includes at least one thermometer, a display screen, a temperature control panel, a start-stop button and a controller. The thermometer is arranged in the heating area, and the side of the box body is provided with a display screen, a start-stop button and a temperature control panel. The controller is respectively connected to the thermometer, the start-stop button, the temperature control panel, the display screen and the power component circuit. The thermometer feeds back the temperature information to the controller in real time, the display screen displays the temperature information, the start-stop button controls the start and stop of the power component, and the temperature control panel controls the temperature of the heating area. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A front view of a multi-temperature zone tubular furnace provided in an embodiment of the utility model;

[0030] Figure 2 It is a schematic diagram of a multi-temperature zone tubular furnace provided in an embodiment of the present utility model.

[0031] Explanation of the accompanying drawings: 1. Pull rod; 2. Sealing flange; 3. Heating tube; 4. Insulating inner shell; 5. Insulating board; 6. Storage dish; 7. Start / stop button; 8. Temperature control board; 9. Display screen; 10. First bracket; 11. Support plate; 12. Power part; 13. Limit plate; 14. Outer shell; 15. Arc block; 16. Box body; 17. Second bracket. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] like Figure 1 A specific implementation of the multi-temperature zone tubular furnace shown in -2 includes: a furnace body and a drive assembly.

[0037] like Figure 1 , Figure 2As shown, the furnace body includes a shell 14 and a box 16, wherein the box 16 is located below the shell 14, the shell 14 is a shell with an arc-shaped cross section, and a second bracket 17 is provided at both ends along the length direction of the shell 14, and the shell 14 is fixedly connected to the box 16 through the second bracket 17. Figure 2 As shown, two arc blocks 15 are respectively provided on both sides of the outer periphery of the housing 14, and the arc blocks 15 are adapted to the shape of the housing 14. The arc blocks 15 are respectively fixedly connected to the housing 14 and the box body 16, and a movable plate is provided on the housing 14, and the movable plate is connected to the housing 14 by bolts, that is, when the movable plate needs to be fixed to the housing 14, the movable plate is fixedly connected to the housing 14 by bolts, and when the movable plate needs to be separated from the housing 14, the bolts are loosened to separate the two. Figure 1 As shown, the furnace body further includes a pull rod 1, a heating tube 3 and two heat-insulating inner shells 4, wherein the heat-insulating inner shell 4 is arranged in the outer shell 14, the heating tube 3 is arranged through the heat-insulating inner shell 4, and the length of the heating tube 3 is greater than the length of the outer shell 14. Specifically, the material of the heating tube 3 is a quartz tube.

[0038] like Figure 1 , Figure 2 As shown, both ends of the heating tube 3 extend out of the housing 14, both ends of the heating tube 3 are provided with sealing flanges 2, and the heating tube 3 is connected to a vacuum pump. Figure 1 As shown, a heat insulation board 5 is also provided in the furnace body, and the heat insulation board 5 is provided between the two heat-insulating inner shells 4, and the heat insulation board 5 is sleeved on the outer periphery of the heating tube 3, and the heat insulation board 5 separates the two heat-insulating inner shells 4 into two heating areas. Figure 1 As shown, the furnace body also includes two thermometers, a display screen 9, a start / stop button 7, a timer and a controller. One heating area corresponds to one thermometer. A display screen 9, a start / stop button 7 and a temperature control board 8 are provided on the side of the box body 16. The controller is respectively connected to the thermometer, the start / stop button 7, the temperature control board 8, the display screen 9 circuit, the timer and the vacuum pump circuit. One temperature control board 8 corresponds to one heating area.

[0039] like Figure 2 As shown, the driving assembly is arranged on one side of the furnace body, and the driving assembly includes a first bracket 10, a support plate 11 and a power member 12 arranged on the first bracket 10, the power member 12 is arranged on the side of the support plate 11, the driving end of the power member 12 is connected to the pull rod 1, and the power member 12 is connected to the controller circuit. Specifically, the power member 12 is a telescopic motor. Figure 1 , Figure 2 As shown, the end of the pull rod 1 extending into the heating tube 3 is fixedly connected to the storage dish 6, and the end of the pull rod 1 extending out of the heating tube 3 is connected to the driving end of the power member 12. Figure 1As shown, the driving assembly further includes a limit plate 13, and the portion of the pull rod 1 extending outside the heating tube 3 is fixed with the limit plate 13, and the limit plate 13 is perpendicular to the length direction of the pull rod 1. It should be noted that, in order to facilitate the pull rod 1 to enter the heating tube 3, the sealing flange 2 in contact with the pull rod 1 is provided with a hole, so that the pull rod 1 can enter the heating tube 3.

[0040] During the specific implementation process, the heating tube 3 and the sealing flange 2 are separated, the sample to be tested is placed in the storage dish 6, and then sealed with the sealing flange 2, and the outer shell 14 and the movable plate. Turn on the power, the vacuum pump extracts the air in the heating tube 3 to form a vacuum environment, the controller forms different high and low temperature zones in different heating areas through the temperature control board 8, the timer counts, and the power part 12 drives the pull rod 1 to reciprocate and the time interval and the number of cycles, so that the sample to be tested is heated and cooled in two heating areas at different temperatures at a certain time interval. After the heat treatment is completed, loosen the bolts connecting the movable plate and the outer shell 14 until the temperature drops to room temperature, open the sealing flange 2, and take out the sample to be tested for subsequent testing.

[0041] As an alternative embodiment, the number of the heat-insulating inner shells 4 may be 3, 4 or even more.

[0042] As an alternative embodiment, the number of the heat insulation boards 5 may be 2, 3 or even more.

[0043] As an alternative embodiment, the heating tube 3 may also be an alumina tube.

[0044] As an alternative implementation, the power member 12 may also be a cylinder or a hydraulic cylinder.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A multi-temperature zone tubular furnace, characterized in that: include: A furnace body, the furnace body comprising a heating tube (3) and a pull rod (1) partially extending into the heating tube (3); A driving assembly is arranged on one side of the furnace body, and the driving assembly includes a first bracket (10), a support plate (11) and a power member (12) arranged on the first bracket (10). The power member (12) is arranged on the side of the support plate (11), and the driving end of the power member (12) is connected to the pull rod (1). The power member (12) drives the pull rod (1) to move along the central axis direction of the heating tube (3).

2. The multi-temperature zone tubular furnace according to claim 1, characterized in that: The portion of the pull rod (1) extending outside the heating tube (3) is fixed with a limiting plate (13), and the limiting plate (13) is perpendicular to the length direction of the pull rod (1).

3. The multi-temperature zone tubular furnace according to claim 1, characterized in that: One end of the pull rod (1) extending into the heating tube (3) is fixedly connected to a storage dish (6).

4. The multi-temperature zone tubular furnace according to claim 1, characterized in that: The heating tube (3) is arranged to pass through the furnace body, and sealing flanges (2) are respectively provided at both ends of the heating tube (3).

5. The multi-temperature zone tubular furnace according to claim 4, characterized in that: The furnace body comprises a heat-insulating inner shell (4) and at least one heat-insulating board (5); the heat-insulating inner shell (4) and the heat-insulating board (5) are arranged inside the furnace body; the heat-insulating inner shell (4) is sleeved on the outer periphery of the heating tube (3); and the heat-insulating board (5) divides the heat-insulating inner shell (4) into at least two heating areas.

6. The multi-temperature zone tubular furnace according to claim 5, characterized in that: The furnace body comprises a box body (16) and an outer shell (14), wherein the outer shell (14) is arranged above the box body (16), and the outer shell (14) wraps the heat-insulating inner shell (4) therein.

7. The multi-temperature zone tubular furnace according to claim 6, characterized in that: Arc blocks (15) are respectively provided on both sides of the outer circumference of the outer shell (14), and the arc blocks (15) are respectively connected to the outer shell (14) and the box body (16).

8. The multi-temperature zone tubular furnace according to claim 7, characterized in that: Second brackets (17) are respectively provided at both ends of the outer shell (14), and the outer shell (14) is fixedly connected to the box body (16) via the second brackets (17).

9. The multi-temperature zone tubular furnace according to claim 8, characterized in that: The invention also comprises at least one thermometer, a display screen (9), a temperature control panel (8), a start / stop button (7) and a controller. The thermometer is arranged in the heating area. The side of the box body (16) is provided with a display screen (9), a start / stop button (7) and a temperature control panel (8). The controller is respectively connected to the thermometer, the start / stop button (7), the display screen (9), the temperature control panel (8) and the power part (12) through circuits.

10. The multi-temperature zone tubular furnace according to claim 4, characterized in that: The material of the heating tube (3) is a quartz tube or an alumina tube.

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