Heating furnace radiant tube
By designing a square radiant tube structure, the problems of cumbersome maintenance and large space occupation of round radiant tubes were solved, resulting in improved heating efficiency and extended component life.
Patent Information
- Application Number
- CN202423303854.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The maintenance of circular radiant tubes in existing roller hearth furnaces is cumbersome, they occupy a lot of space, and the power per unit surface area of the metal heating elements is unreasonable, resulting in a short service life.
It adopts a square radiant tube structure, including a middle rod, tail plate, middle plate, baffle plate and insulation layer, which are fixed by fasteners. The lead-out rod is electrically connected to the heating element, which facilitates maintenance and improves the power per unit surface area.
It has a compact structure, occupies little space, has a large heating power, is easy to maintain, and has an extended service life of metal heating elements.
Smart Images
Figure CN223678219U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to heating pipe technical field, concretely relates to a heating furnace radiation pipe. BACKGROUND
[0002] In prior art, the roller bottom type heating furnace usually adopts the round radiation pipe as the heating body, and the round resistance wire is arranged in the round radiation pipe. The structure has the following problems:
[0003] 1. When the resistance band needs to be repaired or replaced, the supporting roller brick needs to be removed first, and the supporting roller needs to be pulled out, so that the operation is complicated and the repair efficiency is low;
[0004] 2. The structure of the round radiation pipe occupies a large space, and the heating power is relatively small;
[0005] 3. The unit surface power Wy value of the metal heating element in the round radiation pipe is not reasonable, and the service life is short. CONTENT OF THE UTILITY MODEL
[0006] The utility model aims at providing a heating furnace radiation pipe to solve the problems in prior art.
[0007] In order to achieve the above-mentioned purpose, the utility model provides a heating furnace radiation pipe, which comprises: a middle rod, the tail disc, the plurality of middle discs and the two stop discs arranged on the middle rod are axially fixed through the fasteners at both ends of the middle rod; a heat preservation layer is further arranged on the middle rod, and the heat preservation layer is located between the two stop discs;
[0008] Further comprising: the lead-out rod and the heating element are arranged on both sides of the middle rod, and the lead-out rod and the heating element on the same side of the middle rod are electrically connected; one end of the heating element is located in the tail disc, the other end of the heating element passes through the middle disc and is connected with the lead-out rod, and the lead-out rod is connected with the electrode through the heat preservation layer and the stop disc.
[0009] In some optional embodiments of the utility model, the bottom outer wall of the tail disc is provided with a blind hole accommodating the fastener, so that the end surface of the fastener and the middle rod does not protrude from the bottom outer wall of the tail disc.
[0010] Preferably, a plurality of tail disc through holes are arranged on the tail disc at intervals, and one end of the heating element can extend into the tail disc through hole.
[0011] In some optional embodiments of the utility model, the middle disc comprises a middle disc body; a supporting rod is arranged on one side of the middle disc body, and a limiting hole is arranged on the other side; the adjacent middle discs are limited through the insertion of the supporting rod into the limiting hole; and the middle rod passes through the supporting rod.
[0012] Preferably, the limiting hole is a polygon, and the supporting rod is provided with a protruding end matched with the polygon.
[0013] Preferably, a plurality of intermediate disc through holes are arranged on the intermediate disc body, and the heating element passes through the intermediate disc through holes.
[0014] In some optional embodiments of the present application, the two baffle discs are arranged back to back; each baffle disc comprises a baffle disc body, and the baffle disc body is provided with a connecting rod on one side; the connecting rod of one baffle disc abuts against the intermediate disc, and the connecting rod of the other baffle disc abuts against a fastener; the intermediate rod passes through the connecting rods.
[0015] In some optional embodiments of the present application, a porcelain tube is arranged between the intermediate rod and the heat preservation layer.
[0016] In some optional embodiments of the present application, the cross-sectional outer contours of the tail disc, the intermediate disc, the baffle disc and the heat preservation layer are the same and are rectangular.
[0017] In some optional embodiments of the present application, the tail disc, the intermediate disc and the baffle disc are corundum tail discs, corundum intermediate discs and corundum baffle discs respectively.
[0018] Compared with the prior art, the present application has the following beneficial effects:
[0019] 1. The square radiation tube structure is adopted in the present application, the structure is compact, the occupied space is small, and the heating power is large;
[0020] 2. The unit surface power Wy value of the metal heating element in the square radiation tube is more reasonable, and the service life is prolonged;
[0021] 3. The maintenance and replacement are particularly convenient, the square radiation tube only needs to be pulled out for replacement, and the supporting roller brick and the supporting roller do not need to be disassembled, so that the maintenance efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical scheme of the disclosed embodiments, the drawings of the embodiments will be briefly introduced below, and these drawings are only used for the purpose of illustration, and are not intended to limit the protection scope of the present application.
[0023] Figure 1 is a front view of a heating furnace radiation pipe provided by the embodiments of the present application;
[0024] Figure 2 is an A-A sectional view of Figure 1 ;
[0025] Figure 3 is a B-B sectional view of Figure 2 ;
[0026] Figure 4 is a front view of a heating furnace radiation pipe tail disc provided by the embodiments of the present application;
[0027] Figure 5 is a kind of middle disc of heating furnace radiation pipe provided by the embodiment of the utility model Figure 1 ;
[0028] Figure 6 is a kind of middle disc of heating furnace radiation pipe provided by the embodiment of the utility model Figure 2 . DETAILED DESCRIPTION
[0029] The technical scheme of the utility model (including the preferred technical scheme) will be described in further detail by means of the accompanying drawings and some optional embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0030] As Figures 1 to 6 shown, the utility model provides a kind of heating furnace radiation pipe, comprising: middle rod 1, middle rod 1 both ends are sequentially fixed with the tail disc 3, multiple middle discs 4, two baffle discs 5 being arranged on middle rod 1 by fastener 2;The middle rod 1 is also provided with heat preservation layer 6, and the heat preservation layer 6 is located between the two baffle discs 5;
[0031] It further includes: the lead-out rod 7 and heating element 8 are equipped on the both sides of middle rod 1, and the lead-out rod 7 and heating element 8 of the same side of middle rod 1 are electrically connected;The one end of heating element 8 is located in tail disc 3, and the other end is connected with lead-out rod 7 by passing through middle disc 4, and the lead-out rod 7 is connected with electrode by passing through heat preservation layer 6 and baffle disc 6.
[0032] In some embodiments of the utility model, the bottom outer wall of the tail disc 3 is provided with a blind hole 3.1 accommodating the fastener 2, so that the end surface of the fastener 2 and the middle rod 1 does not protrude from the bottom outer wall of the tail disc 3.
[0033] Preferably, a plurality of tail disc through holes 3.2 are provided on the tail disc 3, and one end of the heating element 8 can extend into the tail disc through hole 3.2.
[0034] In some embodiments of the utility model, the middle disc 4 includes a middle disc body 4.1;One side of the middle disc body 4.1 is provided with a support rod 4.2, and the other side is provided with a limiting hole 4.3;Adjacent middle discs 1 are limited by inserting the support rod 4.2 into the limiting hole 4.3;The middle rod 1 passes through the support rod 4.2.
[0035] Preferably, the limiting hole 4.3 is a polygon, and the support rod 4.2 is provided with a protruding end 4.4 adapted to the polygon.
[0036] In some optional embodiments, the limiting hole 4.3 is a regular hexagon, so that it can not only be axially positioned, but also prevent the intermediate disc 1 from rotating during installation.
[0037] Preferably, a plurality of intermediate disc through holes 4.5 are arranged on the intermediate disc body, and the heating element 8 passes through the intermediate disc through hole 4.5.
[0038] In some embodiments of the present application, the two stop discs 5 are arranged back to back; each stop disc 5 comprises a stop disc body 5.1, and the stop disc body 5.1 is provided with a connecting rod 5.2 on one side; the connecting rod 5.2 of one stop disc 5 abuts on the intermediate disc 4, and the connecting rod 5.2 of the other stop disc 5 abuts on the fastener 2; the intermediate rod 1 passes through the connecting rod 5.2.
[0039] In some embodiments of the present application, a porcelain tube 9 is arranged between the intermediate rod 1 and the heat preservation layer 6.
[0040] In some optional embodiments of the present application, the tail disc 3, the intermediate disc 4, the stop disc 5 and the heat preservation layer 6 have the same rectangular cross-sectional contour.
[0041] In some embodiments of the present application, the tail disc 3, the intermediate disc 4 and the stop disc 5 are corundum tail discs, corundum intermediate discs and corundum stop discs, respectively.
[0042] The cross section of the heating furnace radiation pipe is rectangular, which makes the overall structure more compact and occupies less space. At the same time, the square structure is also conducive to improving the rationality of the unit surface power Wy value of the metal electric heating element, thereby prolonging the service life.
[0043] Those skilled in the art can easily understand that the above is only a preferred embodiment of the present application, and does not limit the present application, and any modification, combination, replacement, improvement, etc. made within the spirit and principles of the present application are included in the protection scope of the present application.
Claims
1. A heating furnace radiant tube, characterized by, The utility model relates to a kind of electrode, including: Middle pole, middle pole both ends are sequentially fixed with tail disc, multiple intermediate discs, two stop discs by fastener being arranged on middle pole axially;The middle pole is further provided with heat preservation layer, and the heat preservation layer is located between two stop discs; Further comprising: lead-out rod and heating element are arranged on the both sides of middle pole, and the lead-out rod of middle pole same side is electrically connected with heating element;One end of the heating element is located in tail disc, and the other end is connected with lead-out rod by passing through intermediate disc, and the lead-out rod is connected with electrode by passing through heat preservation layer and stop disc.
2. The radiant tube of claim 1, wherein: The bottom outer wall of the tail disc is provided with a blind hole for accommodating the fastener, so that the end surface of the fastener and the middle rod does not protrude from the bottom outer wall of the tail disc.
3. The radiant tube of claim 2, wherein: A plurality of tail disc through holes are arranged on the tail disc, and one end of the heating element can extend into the tail disc through hole.
4. The radiant tube of claim 1, wherein: The intermediate disc includes an intermediate disc body, one side of the intermediate disc body is provided with a support rod, and the other side is provided with a limiting hole;Adjacent intermediate discs are limited by inserting the support rod into the limiting hole;The middle pole passes through the support rod.
5. The radiant tube of claim 4, wherein: The limiting hole is polygonal, and the support rod is provided with a protruding end adapted to the polygon.
6. The radiant tube of claim 4, wherein: A plurality of intermediate disc through holes are arranged on the intermediate disc body, and the heating element passes through the intermediate disc through hole.
7. The radiant tube of claim 1, wherein: Two stop discs are arranged back to back;Each stop disc includes a stop disc body, and one side of the stop disc body is provided with a connecting rod;The connecting rod of one of the stop discs abuts on the intermediate disc, and the connecting rod of the other stop disc abuts on the fastener;The middle pole passes through the connecting rod.
8. The radiant tube of claim 1, wherein: A porcelain tube is arranged between the middle pole and the heat preservation layer.
9. The radiant tube of claim 1, wherein: The cross-sectional outer contour of the tail disc, intermediate disc, stop disc and heat preservation layer is the same and rectangular.
10. The radiant tube of claim 1, wherein: The tail disc, intermediate disc and stop disc are corundum tail disc, corundum intermediate disc and corundum stop disc respectively.