Temperature control system of bell jar type electric heating furnace

Abstract

The utility model discloses a bell jar type electric heating furnace temperature control system which comprises a furnace base, a heating cover is arranged on the upper end face of the furnace base, and a first heating wire, a second heating wire and a third heating wire are sequentially arranged on the inner wall face of the heating cover. A pair of preheating devices is arranged in the heating cover; under the action of the preheating device, the raw materials can be preheated, so that the raw materials are prevented from bursting or being damaged due to too fast temperature rise in the raw material heating process; meanwhile, under the action of a first heating wire, a second heating wire and a third heating wire, the space in the heating cover can be divided into an upper part, a middle part and a lower part for heating, workers can conveniently and selectively start the first heating wire, the second heating wire or the third heating wire according to the height of raw materials, and the effect of reducing electric energy consumption can be achieved; and convenience is brought to people.

Description

Technical Field

[0001] The utility model relates to the technical field of heating equipment, in particular to a temperature control system for a bell-type electric heating furnace. Background Art

[0002] A heating furnace is a device that heats metal workpieces to the rolling or forging temperature, or heats ordinary materials. The application of heating furnaces covers many industries such as petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, pharmaceuticals, etc.

[0003] During the general heating process, the existing heating furnace does not have a preheating function. The temperature of the heating furnace is relatively high, and the raw materials are heated too quickly at once, which is easy to cause bursting. Content of the Utility Model

[0004] To solve the above problems, that is, to solve the problems raised in the above background art, the utility model provides a temperature control system for a bell-type electric heating furnace, which includes a furnace base. The upper end surface of the furnace base is provided with a heating cover, and a first heating wire, a second heating wire and a third heating wire are successively arranged on the inner wall surface of the heating cover;

[0005] A pair of preheating devices are arranged inside the heating cover;

[0006] The preheating device includes a fixing frame arranged on the upper end surface inside the heating cover. A fixing ring is arranged on the lower end surface of the fixing frame, and a heating rod is inserted into the fixing ring. The bottom end of the heating rod extends to the lower end of the heating cover;

[0007] A locking mechanism is arranged on the lower end surface of the fixing frame for fixing one end of the heating rod to the fixing ring.

[0008] Preferably, the locking mechanism includes a connecting seat fixedly installed on the lower end surface of the fixing frame. A top rod penetrates through the connecting seat, and the end of the top rod extends into the fixing ring and abuts against the side wall of the heating rod. A limiting groove corresponding to the end of the top rod is arranged on the side wall of the heating rod.

[0009] Preferably, a fixing plate is arranged at the outer end of the top rod, and a spring is arranged between the fixing plate and the connecting seat. The spring is sleeved on the outer surface of the top rod.

[0010] Preferably, a threaded hole is formed on the upper end surface inside the heating cover, and a bolt threaded to the threaded hole is arranged on the fixing frame.

[0011] Preferably, the first heating wire, the second heating wire and the third heating wire are all fixedly installed on the inner wall surface of the heating cover in a spiral state.

[0012] The beneficial technical effects of the present utility model are as follows: Under the action of the preheating device, the raw materials can be preheated to prevent the raw materials from bursting or being damaged due to too rapid temperature rise during the heating process of the raw materials;

[0013] Meanwhile, under the action of the first heating wire, the second heating wire, and the third heating wire, the space inside the heating cover can be divided into upper, middle, and lower parts for heating, which facilitates the staff to selectively turn on the first heating wire, the second heating wire, or the third heating wire according to the height of the raw materials, and can achieve the effect of reducing power consumption;

[0014] Meanwhile, under the action of the locking mechanism, it is convenient for the staff to disassemble and assemble the heating rod, and it is convenient for the staff to overhaul or replace the heating rod, bringing convenience to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The main sectional structure schematic diagram of the present utility model is shown.

[0016] Figure 2 Shows the present utility model Figure 1 The enlarged structure schematic diagram of part A.

[0017] Reference numerals in the drawings: 1, furnace base; 2, heating cover; 3, first heating wire; 4, second heating wire; 5, third heating wire; 6, fixing frame; 7, fixing ring; 8, heating rod; 9, connecting seat; 10, ejector rod; 11, limiting groove; 12, fixing plate; 13, spring; 14, bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The preferred embodiments of the present utility model will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0019] The present utility model provides a temperature control system for a bell-type electric heating furnace, including a furnace base 1. A heating cover 2 is provided on the upper end surface of the furnace base 1. The inner wall surface of the heating cover 2 is successively provided with a first heating wire 3, a second heating wire 4, and a third heating wire 5;

[0020] The first heating wire 3, the second heating wire 4, and the third heating wire 5 are all electrically connected to an external power supply device, and can respectively divide the space inside the heating cover 2 into upper, middle, and lower parts for heating, and can heat raw materials of different heights;

[0021] A pair of preheating devices are provided inside the heating cover 2;

[0022] The preheating device includes a fixing frame 6 provided on the upper end face inside the heating cover 2. A fixing ring 7 is provided on the lower end face of the fixing frame 6. A heating rod 8 is inserted into the fixing ring 7, and the bottom end of the heating rod 8 extends to the lower end of the heating cover 2;

[0023] The heating rod 8 is electrically connected to an external power supply device, which can heat and preheat the raw materials in the heating cover 2, and at the same time can also keep the space in the heating cover 2 at a constant temperature;

[0024] A locking mechanism is provided on the lower end face of the fixing frame 5 for fixing one end of the heating rod 8 to the fixing ring 7.

[0025] Specifically, the locking mechanism includes a connecting seat 9 fixedly installed on the lower end face of the fixing frame 6. A push rod 10 penetrates through the connecting seat 9. The end of the push rod 10 extends into the fixing ring 7 and abuts against the side wall of the heating rod 8, and a limiting groove 11 corresponding to the end of the push rod 10 is provided on the side wall of the heating rod 8;

[0026] Under the action of the push rod 10 and the limiting groove 11, one end of the heating rod 8 can be fixed to the fixing ring 7, and at the same time, it is convenient for the staff to disassemble and assemble the heating rod 8.

[0027] Specifically, a fixing plate 12 is provided at the outer end of the push rod 10. A spring 13 is provided between the fixing plate 12 and the connecting seat 9, and the spring 13 is sleeved on the outer surface of the push rod 10;

[0028] The fixing plate 12 is fixedly connected to the outer end of the push rod 10. At the same time, the spring 13 is a tension spring, and its two ends are respectively welded to the outer surfaces of the connecting seat 9 and the fixing plate 12. The spring 13 can apply a pulling force to the fixing plate 12 to drive the push rod 10 to move towards the heating rod 8, so that the end of the push rod 10 is always inserted into the limiting groove 11 to prevent the heating rod 8 from falling off.

[0029] Specifically, a threaded hole is formed on the upper end face inside the heating cover 2, and a bolt 14 is provided on the fixing frame 6 and is threadedly connected to the threaded hole;

[0030] Under the action of the bolt 14 and the threaded hole, the fixing frame 6 can be fixed on the upper end face inside the heating cover 2, and at the same time, rotating the bolt 14 can facilitate the disassembly and assembly of the fixing frame 6.

[0031] Specifically, the first heating wire 3, the second heating wire 4, and the third heating wire 5 are all fixedly installed on the inner wall surface of the heating cover 2 in a spiral state.

[0032] Working principle: When heating the raw materials, the staff first control the external power supply device to supply power to the heating rod 8 to heat it, so as to preheat the raw materials in the heating cover 2 and prevent the raw materials from bursting due to too rapid temperature rise. At the same time, the staff can selectively turn on the first heating wire 3, the second heating wire 4 and the third heating wire 5 according to the height of the raw materials to heat the raw materials. After the raw materials are heated, the staff turn off the first electric heating wire 3, the second electric heating wire 4 and the third electric heating wire 5. At this time, the heating rod 8 can play a role in keeping the space in the heating cover 2 warm. At the same time, during the period when the heating cover 2 is not in use, the staff can pull the fixing plate 12 to drive the ejector rod 10 to move, so that the end of the ejector rod 10 is separated from the limit groove 11, and the heating rod 8 can be disassembled, which is convenient for overhauling or replacing the heating rod 8 and brings convenience to people.

[0033] Although the present invention has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0034] In the description of the present invention, the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements that are inherent to these process, article, or apparatus / device.

[0037] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easily understood by those skilled in the art that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A temperature control system for a bell-type electric heating furnace, characterized in that, It includes a furnace base (1), and a heating cover (2) is provided on the upper end surface of the furnace base (1). A first heating wire (3), a second heating wire (4), and a third heating wire (5) are successively provided on the inner wall surface of the heating cover (2); A pair of preheating devices are provided inside the heating cover (2); The preheating device includes a fixing frame (6) provided on the upper end surface inside the heating cover (2). A fixing ring (7) is provided on the lower end surface of the fixing frame (6). A heating rod (8) is inserted into the fixing ring (7), and the bottom end of the heating rod (8) extends to the lower end of the heating cover (2); A locking mechanism is provided on the lower end surface of the fixing frame (6) for fixing one end of the heating rod (8) to the fixing ring (7).

2. The temperature control system of a bell-type electric heating furnace according to claim 1, characterized in that The locking mechanism includes a connecting seat (9) fixedly installed on the lower end surface of the fixing frame (6). A push rod (10) penetrates through the connecting seat (9). The end of the push rod (10) extends into the fixing ring (7) and abuts against the side wall of the heating rod (8), and a limiting groove (11) corresponding to the end of the push rod (10) is provided on the side wall of the heating rod (8).

3. The temperature control system of a bell-type electric heating furnace according to claim 2, characterized in that A fixing plate (12) is provided at the outer end of the push rod (10). A spring (13) is provided between the fixing plate (12) and the connecting seat (9), and the spring (13) is sleeved on the outer surface of the push rod (10).

4. The temperature control system of a bell-type electric heating furnace according to claim 1, characterized in that A threaded hole is formed on the upper end surface inside the heating cover (2), and a bolt (14) threadedly connected to the threaded hole is provided on the fixing frame (6).

5. The temperature control system of a bell-type electric heating furnace according to claim 1, wherein, The first heating wire (3), the second heating wire (4), and the third heating wire (5) are all fixedly installed in a spiral state on the inner wall surface of the heating cover (2).

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