Bell furnace

Abstract

The utility model provides a bell jar furnace which comprises a bell jar and a base and further comprises an upper plug box, a middle plug box and a lower plug box, the upper plug box is arranged at the bottom of an opening of the bell jar, and the lower plug box is arranged on the base. The upper plug box and the middle plug box are respectively provided with at least two groups of corresponding taper pins and taper holes and a plurality of groups of corresponding moving contacts and static contacts, and when the taper pins are inserted into the taper holes, the moving contacts are in contact connection with the static contacts; and a moving mechanism is arranged between the middle plug box and the lower plug box, so that the middle plug box can move front and back, left and right and rotate relative to the lower plug box. According to the bell-type furnace provided by the utility model, when the upper plug box and the lower plug box are connected, the taper pin firstly enters the taper hole to realize automatic alignment, when the upper plug box and the lower plug box are inserted for a certain length, the moving mechanism realizes fine adjustment of the positions of the middle plug box and the lower plug box to realize complete alignment, and the movable contact and the static contact are connected to ensure tight fit and good electric conduction; the device completely solves the problem of deformation caused by thermal expansion and cold contraction, and thermal expansion and cold contraction at any angle can be offset.

Description

Technical Field

[0001] This utility model mainly relates to the field of bright annealing furnace technology, specifically to a bell-shaped furnace. Background Technology

[0002] Bell-type bright annealing furnaces are widely used for bright annealing of non-ferrous metals such as copper and aluminum alloys, as well as ferrous metals, carbon steel, silicon steel, and alloy steel, including coils, tubes, and wires. The principle is a heat treatment process where the metal material is heated to a suitable temperature, held for a certain time, and then slowly cooled.

[0003] During the heating process of the bell-shaped furnace's iron plate cover, severe thermal expansion occurs. The fixed moving and stationary contacts gradually become loose and lose electrical conductivity during thermal expansion and contraction, leading to poor contact and a high failure rate. Utility Model Content

[0004] To address the shortcomings and deficiencies of current technology, this utility model proposes a more rational bell-jar connection structure for a bell-jar furnace. The technical solution is as follows:

[0005] This utility model proposes a bell-shaped furnace, including a bell and a base, and also includes an upper plug box, a middle plug box and a lower plug box. The upper plug box is located at the bottom of the opening of the bell, and the lower plug box is located on the base.

[0006] The upper plug box and the middle plug box are respectively provided with at least two sets of tapered pins and tapered holes, as well as multiple sets of moving contacts and stationary contacts. When the tapered pin is inserted into the tapered hole, the moving contact and the stationary contact are in contact and connected.

[0007] A moving mechanism is provided between the middle plug box and the lower plug box so that the middle plug box can move back and forth, left and right, and rotate relative to the lower plug box.

[0008] As a preferred embodiment of the above technical solution, the moving mechanism includes a fixed plate, the middle plug box is connected to the upper surface of the fixed plate through a first guide mechanism, the lower surface of the fixed plate is connected to the lower plug box through a second guide mechanism, and the fixed plate is also connected to the base through a rotating shaft, the base being fixedly installed.

[0009] As a preferred embodiment of the above technical solution, the rotating shaft is connected to the lower plug box via a bearing, and a pressure bearing is provided between the lower plug box and the base.

[0010] As a preferred embodiment of the above technical solution, the power furnace is connected to the stationary contact via a perforated plug.

[0011] As a preferred embodiment of the above technical solution, the guiding mechanism adopts the form of a guide rail and a slider.

[0012] As a preferred embodiment of the above technical solution, a bearing is provided inside the tapered hole.

[0013] As a preferred embodiment of the above technical solution, the moving contact and the stationary contact are respectively fixed on the insulating plates of the upper plug box and the middle plug box.

[0014] As a preferred embodiment of the above technical solution, at least two guide posts are fixedly provided on one side of the lower plug box, and at least two sliding sleeves corresponding to the guide posts are provided on the outer surface of the bell jar. The guide posts have a preset height so that when the upper plug box and the middle plug box are connected, the sliding sleeves are pre-fitted and positioned with the guide posts.

[0015] As a preferred embodiment of the above technical solution, the guide post is thinner at the top and thicker at the bottom.

[0016] The bell-shaped furnace proposed in this utility model features a tapered pin that automatically aligns itself by first entering the tapered hole when connecting the upper and lower plug boxes. After a certain length of insertion, a moving mechanism fine-tunes the positions of the middle and lower plug boxes to achieve complete alignment. Continued insertion ensures a tight fit and excellent conductivity between the moving and stationary contacts. This device completely solves the problem of thermal expansion and contraction deformation. Thermal expansion and contraction at any angle are offset, and the furnace shell undergoes slight deformation during heating, causing the staggered contacts to shift. Over time, this shortens the lifespan of the staggered contacts. By using left and right slide rails, front and rear slide rails, and a rotating pressure bearing between the middle and lower plug boxes to offset forces in any direction, a tight fit between the moving and stationary staggered contacts is achieved, greatly extending the contact lifespan. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of 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 fixed connection state between the upper plug box and the bell-shaped furnace provided in this embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of the upper plug box, middle plug box and lower plug box of the bell furnace provided in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the upper plug box structure provided in the embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the middle and lower plug box structure provided in the embodiment of this utility model;

[0022] Figure 5 yes Figure 2 Top view. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] This utility model proposes a bell-shaped furnace, including an upper plug box 1, which is fixedly connected to the bell 2 of the bell-shaped furnace, and also includes a middle plug box 3 and a lower plug box 4. The base 6 is generally fixed on a cement platform. The upper plug box is connected to 380V power supply, and the middle plug box is connected to 380V power transmission.

[0025] The upper plug box and the middle plug box are respectively provided with at least two sets of tapered pins 1-1 and tapered holes 3-1, as well as multiple sets of moving contacts and stationary contacts. The moving contacts and stationary contacts are connected by a Phillips head plug. The moving contacts and stationary contacts are respectively fixed on the insulating plates 1-3 and 3-3 of the upper plug box and the middle plug box. A bearing 3-3 is provided in the tapered hole.

[0026] When the tapered pin is inserted into the tapered hole, the moving contact and the stationary contact are in contact and connected, thereby fixing the upper plug box and the middle plug box.

[0027] A moving mechanism 5 is provided between the middle plug box 3 and the lower plug box 4 so that the middle plug box can move back and forth, left and right, and rotate relative to the lower plug box.

[0028] The moving mechanism 5 includes a fixed plate 5-1. The middle plug box is connected to the upper surface of the fixed plate through a first guide mechanism 5-2. The lower surface of the fixed plate is connected to the lower plug box through a second guide mechanism 5-3. The fixed plate is also connected to the base 6 through a rotating shaft 5-6. The base is fixedly installed. The guide mechanism adopts the form of a guide rail and a slider.

[0029] The rotating shaft is connected to the lower plug box via bearing 5-5, and a pressure bearing 5-4 is provided between the lower plug box and the base.

[0030] At least two guide posts 2-2 are fixedly provided on one side of the lower plug box, and at least two sliding sleeves 2-1 corresponding to the guide posts are provided on the outer surface of the bell jar. The guide posts have a preset height so that when the upper plug box is connected to the middle plug box, the sliding sleeves and guide posts are pre-fitted and positioned. The guide posts are thinner at the top and thicker at the bottom.

[0031] The first guide mechanism 5-2 consists of two guide rail sliders that can swing left and right. The second guide mechanism 5-3 consists of two guide rail sliders that can swing back and forth. The swing can stop and self-align at any position within 20mm. The pressure bearing 5-4 can rotate 360 ​​degrees at any angle. When the bell jar is fastened to the base, it moves from top to bottom, first reaching the guide post 2-2. The upper 80% clearance between the guide post 2-2 and the sliding sleeve 2-1 is 20mm, and the lower 20% clearance is 8mm. Because of these clearances, there will be an angle when the upper and lower plug boxes are closed. The guide post 2-2 remains fixed, ensuring the sliding sleeve 2-1 stays in position regardless of its location.

[0032] The upper plug box has a tapered pin 1-1 on the outside, and the middle plug box has a tapered hole 3-1. When the plug is engaged, the tapered pin enters the tapered hole first when the plug is moved downwards, and it automatically aligns itself. After inserting 30-40mm, it is fully aligned. The plum blossom plug and the contact arm are plugged together to ensure a tight fit and good conductivity.

[0033] The bell-shaped furnace proposed in this utility model ensures verticality and precise positioning, while completely solving the problem of thermal expansion and contraction deformation, and thermal expansion and contraction at any angle will be offset.

[0034] This description illustrates the technical solutions of this utility model, but is not intended to limit them. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bell-type furnace comprising a bell and a base, characterized in that, The upper plug box is provided with a bell opening bottom, and the lower plug box is arranged on the base; The upper plug box and the middle plug box are respectively provided with at least two groups of taper pins and taper holes and a plurality of groups of movable contacts and static contacts corresponding to each other, and the movable contacts and the static contacts are connected when the taper pins are inserted into the taper holes; The middle plug box is arranged between the middle plug box and the lower plug box, so that the middle plug box can move forward and backward, left and right, and rotate relative to the lower plug box.

2. Bell furnace according to claim 1, characterized in that The moving mechanism includes a fixed plate, the middle plug box is connected to the upper surface of the fixed plate through a first guide mechanism, the lower surface of the fixed plate is connected to the lower plug box through a second guide mechanism, the fixed plate is further connected to the base through a rotating shaft, and the base is fixedly arranged.

3. Bell furnace according to claim 2, characterized in that The rotating shaft is connected to the lower plug box through a bearing, and a pressure bearing is arranged between the lower plug box and the base.

4. The bell furnace of claim 1, wherein, The movable contacts and the static contacts are connected in a meihua plug connection mode.

5. The bell furnace of claim 2, wherein, The guide mechanism adopts a guide rail and a sliding block form.

6. The bell furnace of claim 1, wherein, The taper hole is provided with a bearing.

7. The bell furnace of claim 1, wherein, The movable contacts and the static contacts are respectively fixed on the insulating plates of the upper plug box and the middle plug box.

8. The bell furnace of claim 1, wherein, At least two guide columns are fixedly arranged on one side of the lower plug box, at least two sliding sleeves corresponding to the guide columns are arranged on the outer surface of the bell, and the guide columns have a preset height, so that the sliding sleeves and the guide columns are pre-connected and positioned when the upper plug box and the middle plug box are connected.

9. Bell furnace according to claim 8, characterized in that The guide column is thin at the top and thick at the bottom.

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