A heating element arrangement for a kiln

Abstract

The utility model relates to a kind of heating element arrangement structure of kiln, belong to kiln field.Heating chamber is respectively arranged in the left and right sides of furnace chamber, refractory wall is arranged between heating chamber and furnace chamber, first heating element is vertically empty and is arranged in each heating chamber;The furnace body of furnace chamber upper portion is opened deep hole, the deep hole is communicated with furnace chamber downward, second heating element is empty and is arranged in the deep hole, the lead wire of first heating element and second heating element is connected with electricity outside.This application uses the vertically arranged mode of heating element, respectively installs heating element in the upper portion, left and right sides of furnace chamber, and heating element is vertically arranged, can improve the heating efficiency and heating uniformity in furnace chamber, prolong the service life of heating element simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of kilns. Background Technology

[0002] A pusher-plate furnace is a combination of heating and pusher-plate movement, used for heating and sintering magnetic materials. It uses pushers to complete the heating and sintering process of the samples. The samples on the pushers are gradually heated as the pushers move, and after a set time and temperature, the temperature naturally decreases, thus completing the sintering process. The heating temperature in sintering furnaces is very high, and the temperature uniformity within the furnace is crucial; therefore, the selection and arrangement of the heating elements within the furnace are extremely important.

[0003] Chinese Patent Publication No. CN216770179U discloses a sintering atmosphere furnace. The furnace cavity has a partition beam at the top, with supporting steps (step 1) on both sides of the partition beam. Supporting steps (step 2) are also provided on both sides of the furnace cavity. Upper support plates are supported on the opposing supporting steps (step 1 and step 2), and each upper support plate holds an upper heating element. Supporting steps (step 3) are provided on both sides of the pier, and supporting steps (step 4) are provided on both sides of the furnace cavity. Lower support plates are provided between opposing supporting steps (step 3 and step 4), and each lower support plate holds a lower heating element. The inner side wall of the furnace cavity has upper and lower heating element through holes. Upper and lower heating element sealing boxes are respectively located outside the upper and lower heating element through holes. Four side air inlet branches are provided, with the outlets of two of the side air inlet branches connected to the upper and lower heating element sealing boxes respectively. This patented technology uses a horizontal placement of heating elements above and below the furnace cavity. The heating elements are placed on a wire support plate (tray), and the heating efficiency and temperature uniformity inside the furnace are improved by heating from both above and below.

[0004] With the advent of four-pusher and six-pusher kilns, the trend towards larger kilns is evident. Considering sintering efficiency, the development of larger kilns generally involves horizontal expansion of the furnace chamber, rather than vertical expansion. While vertical expansion increases the material load-bearing height of the pushers, excessively high material stacking significantly impacts sintering performance. Clearly, to accommodate a wider furnace chamber, the traditionally horizontally placed heating elements need to be longer, which is not easily achieved. Increased heating element length makes them more prone to deformation on the support plate, significantly shortening their lifespan. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a heating element arrangement structure for a kiln, which improves the heating uniformity on both sides of the furnace chamber and extends the service life of the heating elements for large-volume kilns.

[0006] The technical solution adopted by this utility model to solve the above problems is as follows: a heating element arrangement structure for a kiln, wherein heating chambers are respectively arranged on the left and right sides of the furnace chamber, and a fireproof wall is arranged between the heating chamber and the furnace chamber. A first heating element is vertically suspended in each of the heating chambers; a deep hole is opened in the furnace body above the furnace chamber, and the deep hole communicates downward with the furnace chamber. A second heating element is suspended in the deep hole, and the leads of the first heating element and the second heating element are externally connected to electricity.

[0007] Preferably, the bottom of the second heating element reaches into the furnace chamber, increasing the heating temperature at the top of the furnace chamber.

[0008] Preferably, the furnace body above the heating chamber is provided with an extension hole, which communicates downward with the heating chamber. The extension rod is suspended within the extension hole, and the first heating element is connected to the bottom end of the extension rod. This allows the insertion length of the extension rod to be adjusted according to the height of the furnace body.

[0009] Preferably, the fire-resistant wall is provided with through holes evenly distributed, which allow the heating chamber and the furnace chamber to communicate with each other, thereby helping to improve heat transfer efficiency.

[0010] The heating element in this application is a silicon molybdenum rod, which generates heat when energized.

[0011] Compared with existing technologies, the advantages of this utility model are as follows: This application adopts a vertical arrangement of heating elements, with heating elements installed above and on both sides of the furnace chamber. This vertical arrangement improves heating efficiency and uniformity within the furnace chamber, reducing heat loss. Furthermore, the vertical arrangement of the heating elements allows for adaptation to wider and taller furnace chambers without relying on extending the length of the heating elements. Additionally, the vertical arrangement of the heating elements eliminates the need to place them on a wire support plate, thus helping to extend the service life of the heating elements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the arrangement structure of the heating element of this utility model;

[0013] In the diagram, 1 is the furnace chamber, 2 is the furnace body, 3 is the heating chamber, 4 is the deep hole, 5 is the extension hole, 6 is the through hole, 7 is the first heating element, 8 is the second heating element, 9 is the extension rod, and 10 is the fireproof wall. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings. The embodiments described are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0015] like Figure 1As shown, in this embodiment, the heating element is a silicon molybdenum rod, which heats up by being energized through a lead wire. The arrangement of the heating elements in the kiln is as follows: heating chambers 3 are respectively set on the left and right sides of the furnace chamber 1. A refractory wall 10 is set between the heating chamber 3 and the furnace chamber 1. Through holes 6 are evenly arranged on the refractory wall 10 to connect the heating chamber 3 and the furnace chamber 1. An extension hole 5 is set on the furnace body 2 above the heating chamber 3. The extension hole 5 communicates downward with the heating chamber 3. An extension rod 9 is set in the extension hole 5. The upper end of the extension rod protrudes from the furnace body 2 and is fixed, so that the extension rod 9 is suspended in the extension hole 5. The first heating element 7 is connected to the bottom end of the extension rod 9. The first heating element 7 is vertically suspended in the heating chamber 3.

[0016] A deep hole 4 is opened in the furnace body directly above the furnace chamber 1. The deep hole 4 communicates downward with the furnace chamber 1. The upper end of the second heating element 8 protrudes from the furnace body 1 and is fixed, so that the second heating element 8 is suspended in the deep hole 4. The bottom of the second heating element 8 extends into the furnace chamber below.

[0017] The kiln arrangement structure of the aforementioned heating elements saves on the need for wire support plates, and the heating elements do not contact the wire support plates, which helps to improve the service life of the heating elements. The vertical arrangement of heating elements on both sides improves the heating efficiency on both sides of the kiln and facilitates heating uniformity, making it particularly suitable for taller kiln chambers. For taller kiln bodies, a second heating element is installed directly above the kiln chamber to ensure the heating temperature in the upper part of the kiln chamber.

[0018] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. An arrangement of heating elements for a kiln, characterised in that: Heating chambers are respectively set on the left and right sides of the furnace chamber, and a fireproof wall is set between the heating chamber and the furnace chamber. The first heating element is vertically suspended in each of the heating chambers. A deep hole is opened in the furnace body above the furnace chamber, and the deep hole communicates downward with the furnace chamber. The second heating element is suspended in the deep hole. The leads of the first heating element and the second heating element are connected to the outside of the furnace.

2. The heating element arrangement of a kiln according to claim 1, characterized in that: The bottom of the second heating element reaches the furnace chamber.

3. The heating element arrangement of a kiln according to claim 1, characterized in that: An extension hole is provided on the furnace body above the heating chamber. The extension hole communicates downward with the heating chamber. The extension rod is suspended in the extension hole, and the first heating element is connected to the bottom end of the extension rod.

4. The heating element arrangement of a kiln according to claim 1, characterized in that: The fire-resistant wall is provided with through holes evenly distributed, which allow the heating chamber to communicate with the furnace chamber.

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