A hearth structure for a high temperature electric furnace

Abstract

The utility model relates to electric furnace hearth design technical field, concretely relates to a hearth structure of high temperature electric furnace, through design movable movable hearth, make hearth structure inner chamber space become adjustable. Through drive mechanism drive movable hearth moves back and forth, and then change the size of hearth structure inner chamber space, make it more adaptation different workpieces and reduce waste. A plurality of electric heating pipes are arranged on the side wall hearth and the movable hearth to heat the inner chamber space of the hearth structure, and the temperature rises rapidly. The electric heating pipes on the movable hearth are always located in the inner chamber of the hearth structure. In addition, through special circuit design, only the electric heating pipes on the front side wall hearth of the movable hearth are powered on during the movement of the movable hearth, that is, only the electric heating pipes in the inner chamber space of the hearth structure are powered on, and the electric heating pipes on the outside are automatically powered off.

Description

Technical Field

[0001] This utility model relates to the field of electric furnace chamber design technology, and in particular to a furnace chamber structure for a high-temperature electric furnace. Background Technology

[0002] The furnace chamber of an electric furnace is the core space inside the furnace body, specifically designed to hold workpieces and heat them at high temperatures. Currently, most furnace chambers are made of various heavy high-temperature refractory materials in a single molding process, or assembled from refractory bricks made of various heavy high-temperature refractory materials.

[0003] The furnace chamber is mainly used to provide combustion space and achieve efficient radiative heat transfer, while the refractory layer and insulation layer structure provide thermal insulation.

[0004] The size of the existing electric furnace chamber is generally fixed. When the workpiece being processed is small, the heating space of the furnace chamber cannot be adjusted according to the size of the workpiece to be heated, and the entire internal space of the furnace chamber needs to be heated, resulting in waste.

[0005] In addition, heating elements are generally evenly distributed in the furnace chamber of electric furnaces. Therefore, even if the heating space can be changed, it is still a problem to ensure that only the heating elements inside the heating space heat up after the heating space is changed, otherwise it will still be a waste. Utility Model Content

[0006] In view of this, the purpose of this utility model is to propose a furnace chamber structure for a high-temperature electric furnace, so as to solve the technical problems of the size of the heating space in the furnace chamber and the difficulty in controlling the heating of the heating elements in the prior art.

[0007] To achieve the above objectives, this utility model provides a furnace chamber structure for a high-temperature electric furnace, comprising a furnace body, wherein the furnace chamber structure is located within the inner cavity of the furnace body, and the furnace chamber structure includes: Side fireplaces are provided on both sides of the inner cavity of the electric furnace body. The side fireplaces are fixedly installed in the electric furnace body. Several electric heating tubes are also provided on the inner wall of the side fireplaces. The electric heating tubes are vertically arranged and equidistantly, and the electric heating tubes are embedded in the side wall of the side fireplaces. The movable furnace chamber is located within the inner cavity of the electric furnace body and is slidably connected between the side furnace chambers on both sides. The electric furnace body is also equipped with a drive mechanism for driving the movable furnace chamber to move.

[0008] Furthermore, the inner wall of the movable furnace is also provided with several electric heating tubes, which are vertically arranged and equidistant, and these electric heating tubes are also embedded in the side wall of the movable furnace.

[0009] Furthermore, the driving mechanism is a motor or a cylinder, and the output shaft of the driving mechanism is fixedly connected to the outer wall of the movable furnace through a connecting rod.

[0010] Furthermore, the electric heating tube consists of an outer metal protective tube and an inner resistance wire. The resistance wire is spiral-shaped and evenly distributed inside the inner wall of the metal tube, and an insulating layer is provided between the metal protective tube and the resistance wire.

[0011] Furthermore, positive and negative cables are respectively connected to the upper and lower end faces of the movable furnace. The positive and negative cables are connected to the positive and negative terminals of the electric heating tube through an internal connection circuit, and the positive and negative cables are also connected to the positive and negative terminals of an external power supply.

[0012] Furthermore, the top of the side furnace is provided with a connecting groove, and the top of the movable furnace is provided with protrusions on both sides, which are slidably connected to the connecting groove.

[0013] Furthermore, the electric heating tubes on the side fireplace are connected in series, and the negative end of the electric heating tube is connected to the negative terminal of the side fireplace located at the bottom of the side fireplace. The negative terminal of the side fireplace is also directly connected to the negative terminal of an external power source through a wire. The top of the connecting groove is provided with multiple side chamber positive electrode connecting pieces, each of which is connected to the positive electrode of an electric heating tube on the side chamber furnace.

[0014] Furthermore, the positive electrode connecting piece of the side chamber is not directly connected to the positive electrode of the external power supply. The bottom of the protrusion of the movable furnace chamber is provided with a connecting slide, which is slidably connected to the positive electrode connecting piece of the side chamber. The connecting slide is also connected to the positive electrode cable through an internal connecting circuit.

[0015] The beneficial effects of this utility model are as follows: 1. By designing a movable furnace chamber, the internal space of the furnace chamber structure becomes adjustable. The movable furnace chamber is driven to move back and forth by a drive mechanism, thereby changing the size of the internal space of the furnace chamber structure, making it more adaptable to different workpieces and reducing waste.

[0016] 2. Multiple electric heating tubes are installed on the side fireplace and the movable furnace to heat the internal space of the furnace structure, resulting in rapid temperature rise. The electric heating tubes on the movable furnace are always located inside the furnace structure. In addition, through a special circuit design, only the electric heating tubes on the front side fireplace of the movable furnace are energized and heated during the forward and backward movement of the movable furnace. That is, only the electric heating tubes inside the furnace structure are energized and heated, while the electric heating tubes left on the outside are automatically de-energized. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the electric furnace body of the device of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal cavity of the electric furnace body of the device of this utility model.

[0020] Figure 3 This is a schematic diagram of the structural principle of the furnace structure of the device of this utility model.

[0021] Figure 4 This is a schematic diagram of the furnace structure from the rear view of the device of this utility model.

[0022] Figure 5 This is a schematic diagram of the circuit connection of the electric heating tube inside the movable furnace in the device of this utility model.

[0023] Figure 6 This is a schematic diagram of the circuit connection of the electric heating tube inside the side fireplace chamber of the device of this utility model.

[0024] The diagram is marked as follows: 101. Electric furnace body; 102. Side furnace chamber; 103. Movable furnace chamber; 104. Electric heating tube; 105. Push plate; 106. Positive cable; 107. Negative cable; 108. Connecting slide; 109. Side furnace positive connecting piece; 110. Side furnace negative connector; 111. Internal connecting circuit; 112. Connecting rod. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] The first aspect of the utility model, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, since the workpieces being processed vary in size and shape, and the existing electric furnace chambers are generally of a fixed size, the heating space of the furnace chamber cannot be adjusted according to the size of the workpiece to be heated, and the entire internal space of the furnace chamber needs to be heated, resulting in waste. Therefore, this utility model designs a movable furnace chamber 103, which adjusts the size of the entire internal space of the furnace chamber structure by moving the movable furnace chamber 103.

[0028] Specifically, the furnace structure is located in the inner cavity of the electric furnace body 101, including side furnace chambers 102 located on both sides of the inner cavity of the electric furnace body 101. The side furnace chambers 102 are fixedly installed inside the electric furnace body 101, and a number of electric heating tubes 104 are also provided on the inner side wall of the side furnace chambers 102. The electric heating tubes 104 are vertically arranged and equidistant, and the electric heating tubes 104 are embedded in the side wall of the side furnace chambers 102.

[0029] Additionally, a movable furnace chamber 103 is provided in the inner cavity of the electric furnace body 101. The movable furnace chamber 103 is slidably connected between the side furnace chambers 102 on both sides. A drive mechanism is also provided on the electric furnace body 101 to drive the movable furnace chamber 103 to move.

[0030] The drive mechanism is a motor or cylinder, and the output shaft of the drive mechanism is fixedly connected to the outer wall of the movable furnace chamber 103 through the connecting rod 112.

[0031] Preferably, a number of electric heating tubes 104 are also provided on the inner side wall of the movable furnace 103. These electric heating tubes 104 are vertically arranged and equidistant, and these electric heating tubes 104 are also embedded in the side wall of the movable furnace 103.

[0032] By designing a movable furnace chamber 103, the internal space of the furnace structure becomes adjustable. A drive mechanism moves the movable furnace chamber 103 back and forth, thereby changing the size of the internal space of the furnace structure, making it more adaptable to different workpieces and reducing waste.

[0033] The second aspect of this utility model is as follows: Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, to ensure that only the electric heating tube 104 in the altered furnace cavity space generates heat after the furnace structure's internal space has been changed, this embodiment employs a special circuit design, specifically comprising two parts: Firstly, the internal circuit design of the movable furnace 103 includes a positive cable 106 and a negative cable 107 connected to its upper and lower ends, respectively. These cables are connected to the positive and negative terminals of the electric heating element 104 via an internal connection circuit 111, and are also connected to the positive and negative terminals of an external power supply. Furthermore, the electric heating elements 104 within the movable furnace 103 are arranged in parallel.

[0034] Secondly, the electric heating tubes 104 on the side fireplace 102 are connected in series, and the negative end of the electric heating tube 104 is connected to the side fireplace negative terminal connector 110 located at the bottom of the side fireplace 102. The side fireplace negative terminal connector 110 is also directly connected to the negative terminal of an external power source through a wire.

[0035] Additionally, a connecting groove 108 is provided at the top of the side fireplace 102, while protrusions are provided on both sides of the top of the movable fireplace 103, which are slidably connected to the connecting groove 108. The top of the connecting groove 108 is provided with multiple side fireplace positive electrode connecting pieces 109, each of which is connected to the positive electrode of an electric heating tube 104 on the side fireplace 102.

[0036] The positive electrode connecting piece 109 of the side chamber is not directly connected to the positive electrode of the external power supply. The bottom of the protrusion of the movable furnace chamber 103 is provided with a connecting slide. The connecting slide is slidably connected to the positive electrode connecting piece 109 of the side chamber, and the connecting slide is also connected to the positive electrode cable 106 through the internal connecting circuit 111.

[0037] Therefore, the positive cable 106 on the movable furnace 103 serves as the main power positive connection cable. When the movable furnace 103 moves, only the electric heating tube 104 on the front side of the furnace 102 will form a circuit with the internal connection circuit 111 in the movable furnace 103, while the electric heating tube 104 remaining on the outside will be disconnected. Similar to the principle of a sliding rheostat, the circuit principle is as follows: Figure 6 As shown.

[0038] In addition, the electric heating tube 104 on the movable furnace 103 is always located in the inner cavity of the furnace structure. Therefore, during the back-and-forth movement of the movable furnace 103, only the electric heating tube 104 on the front side of the furnace 102 of the movable furnace 103 is energized and heated. That is, only the electric heating tube 104 in the inner cavity of the furnace structure is energized and heated, while the electric heating tube 104 left on the outside will be automatically de-energized.

[0039] Preferably, the electric heating tube 104 consists of an outer metal protective tube and an inner resistance wire. The resistance wire is spiral-shaped and evenly distributed inside the inner wall of the metal tube, and an insulating layer is provided between the metal protective tube and the resistance wire.

[0040] In summary, this invention, through the design of a movable furnace chamber 103, makes the internal space of the furnace structure adjustable. A drive mechanism moves the movable furnace chamber 103 back and forth, thereby changing the size of the internal space to better suit different workpieces and reduce waste. Multiple electric heating tubes 104 are installed on the side furnace chambers 102 and the movable furnace chamber 103 to heat the internal space of the furnace structure, resulting in rapid temperature rise. The electric heating tubes 104 on the movable furnace chamber 103 are always located within the internal space of the furnace structure. Furthermore, through a special circuit design, during the back-and-forth movement of the movable furnace chamber 103, only the electric heating tubes 104 on the front side furnace chamber 102 are energized for heating; that is, only the electric heating tubes 104 within the internal space of the furnace structure are energized, while the electric heating tubes 104 on the outer sides are automatically de-energized.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims being limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0042] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A furnace chamber structure for a high-temperature electric furnace, comprising a furnace body (101), wherein the furnace chamber structure is located within the inner cavity of the furnace body (101), characterized in that, The furnace structure includes: Side fireplaces (102) are provided on both sides of the inner cavity of the electric furnace body (101). The side fireplaces (102) are fixedly installed inside the electric furnace body (101). A number of electric heating tubes (104) are also provided on the inner wall of the side fireplaces (102). The electric heating tubes (104) are vertically arranged and equidistant, and the electric heating tubes (104) are embedded in the side wall of the side fireplaces (102). A movable furnace chamber (103) is provided in the inner cavity of the electric furnace body (101). The movable furnace chamber (103) is slidably connected between the side furnace chambers (102) on both sides. The electric furnace body (101) is also provided with a driving mechanism for driving the movable furnace chamber (103) to move.

2. The furnace structure of a high-temperature electric furnace according to claim 1, characterized in that, The inner wall of the movable furnace (103) is also provided with several electric heating tubes (104). These electric heating tubes (104) are vertically arranged and equidistant, and these electric heating tubes (104) are also embedded in the side wall of the movable furnace (103).

3. The furnace chamber structure of a high-temperature electric furnace according to claim 1, characterized in that, The driving mechanism is a motor or a cylinder, and the output shaft of the driving mechanism is fixedly connected to the outer wall of the movable furnace (103) through a connecting rod (112).

4. The furnace structure of a high-temperature electric furnace according to claim 1, characterized in that, The electric heating tube (104) consists of an outer metal protective tube and an inner resistance wire. The resistance wire is spiral-shaped and evenly distributed inside the inner wall of the metal tube. An insulating layer is also provided between the metal protective tube and the resistance wire.

5. The furnace structure of a high-temperature electric furnace according to claim 1, characterized in that, Positive cable (106) and negative cable (107) are respectively connected to the upper and lower end faces of the movable furnace (103). The positive cable (106) and negative cable (107) are connected to the positive and negative terminals of the electric heating tube (104) through the internal connection circuit (111), and the positive cable (106) and negative cable (107) are also connected to the positive and negative terminals of the external power supply.

6. The furnace structure of a high-temperature electric furnace according to claim 1, characterized in that, The top of the side fireplace (102) is provided with a connecting groove (108), and the top sides of the movable fireplace (103) are provided with protrusions, which are slidably connected to the connecting groove (108).

7. The furnace chamber structure of a high-temperature electric furnace according to claim 6, characterized in that, The electric heating tubes (104) on the side fireplace (102) are connected in series, and the negative end of the electric heating tube (104) is connected to the side fireplace negative terminal connector (110) located at the bottom of the side fireplace (102). The side fireplace negative terminal connector (110) is also directly connected to the negative terminal of an external power source through a wire. The top of the connecting groove (108) is provided with a plurality of side chamber positive electrode connecting pieces (109), each side chamber positive electrode connecting piece (109) being connected to the positive electrode of an electric heating tube (104) on the side chamber furnace (102).

8. The furnace chamber structure of a high-temperature electric furnace according to claim 7, characterized in that, The positive electrode connecting piece (109) of the side chamber is not directly connected to the positive electrode of the external power supply. The bottom of the protrusion of the movable furnace chamber (103) is provided with a connecting slide. The connecting slide is slidably connected to the positive electrode connecting piece (109) of the side chamber, and the connecting slide is also connected to the positive electrode cable (106) through the internal connecting circuit (111).

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