Radiant tube heating device

Abstract

The utility model provides a radiant tube heating device which is installed together with a radiant tube, the radiant tube comprises an outer shell, one end of the outer shell is open, the other end of the outer shell is closed, the radiant tube heating device comprises a main heating element, the electrode position of the main heating element serves as the cold end of the radiant tube, the cold end is provided with a fixed seat, and the fixed seat is provided with a heating element. A cavity is formed in the outer side of an inner cavity of the fixing seat, the cavity is connected with a connecting bent pipe, the connecting bent pipe is further connected with a heat dissipation device, and the fixing seat is arranged on the periphery of the opening end of an outer shell of the radiant tube in an abutting mode. The electrodes are fixed through insulation blocks, the insulation blocks are arranged at the opening end of the outer shell, and the main heating element is fixed in the outer shell of the radiant tube through heat storage ceramics and a partition plate. The radiant tube heating device is a heating element of a novel titanium silicalite molecular sieve roasting furnace, and the radiant tube heating device is used for heating, so that the length of a process assembly line is greatly shortened, and the roasting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating components, and in particular to a radiant tube heating device. Background Art

[0002] At present, the roasting process of titanium silicon molecular sieve is mostly roller kiln roasting. The current roasting process has problems such as long process line and low roasting efficiency. A new electric heating method is urgently needed to improve it. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a radiant tube heating device, which is installed together with a radiant tube. The radiant tube includes an outer shell, one end of which is open and the other end is closed. The radiant tube heating device includes:

[0004] A main heating element, wherein the electrode of the main heating element serves as the cold end of the radiant tube, the cold end is provided with a fixing seat, a cavity is provided outside the inner cavity of the fixing seat, the cavity is connected to a connecting elbow, and the connecting elbow is further connected to a heat dissipation device, and the fixing seat is close to the outer periphery of the open end of the outer shell of the radiant tube;

[0005] The electrodes are fixed by using insulating blocks, and the insulating blocks are arranged at the open end of the outer shell. The main heating element is fixed inside the outer shell of the radiation tube by heat storage ceramics and partitions.

[0006] In some embodiments, the main heating element is a resistance wire in a U shape, and the resistance wire includes: a metal heating body and a connecting rod. Two connecting rods are connected to both ends of the metal heating body, and the metal heating body is arranged in the entire radiation tube.

[0007] In some embodiments, the connecting rod passes through the insulating block and extends out of the radiant tube to serve as an electrode of the main heating element.

[0008] In some embodiments, the insulating block is further provided with a fixing bolt for fixing the insulating block.

[0009] In some embodiments, the radiant tube heating device also includes a temperature measuring thermocouple, an opening is provided inside the fixing bolt, the fixing bolt is provided with an external external thread connected to the insulating block, and an internal internal thread is provided for fixing the temperature measuring thermocouple inserted into the inside of the radiant tube.

[0010] In some embodiments, the temperature measuring thermocouple is inserted through the opening of the fixing bolt, and extends into the interior of the radiation tube through the openings on the heat storage ceramic and the partition, so as to measure the temperature at a specific position of the radiation tube.

[0011] In some embodiments, the insulating block is provided with two first through holes through which the connecting rod can pass and a second through hole through which the fixing bolt can pass, and the insulating block is used to support the two electrodes of the resistance wire and the fixing bolt.

[0012] In some embodiments, a flange cover is further provided at the open end of the outer shell, the flange cover is located at the outer periphery of the insulating block, and the flange cover is fastened to the fixing seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model provides a radiant tube heating device, a novel heating element for titanium silicon molecular sieve roasting furnaces. Using this radiant tube heating device for heating significantly shortens the process line length and improves roasting efficiency. It utilizes electric heating, and the heating temperature is adjustable. Furthermore, the radiant tube heating device is designed for a heating temperature of 800°C, making it suitable for roasting furnaces and other applications requiring heating.

[0015] The radiant tube heating device provided by the utility model can adjust the working temperature of the radiant tube heating device according to demand, and the cold end of the device is connected to the heat dissipation device, thereby improving the safety of the equipment; a thermocouple temperature measuring device can be installed inside, and the temperature measuring device can reflect the heating temperature at different positions of the device in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a radiant tube heating device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the resistance wire structure shown in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the fixing seat shown in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the insulating block structure shown in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the fixing bolt structure shown in an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the heat storage ceramic structure shown in an embodiment of the present utility model;

[0022] Figure 7 This is a schematic diagram of the partition structure shown in an embodiment of the present utility model;

[0023] Wherein, the reference numerals:

[0024] 1- outer shell;

[0025] 2-fixed seat;

[0026] 201-cavity;

[0027] 3- Connect the elbow;

[0028] 4-Insulation block;

[0029] 401-first through hole;

[0030] 402-second through hole;

[0031] 5-heat storage ceramics;

[0032] 6-partition;

[0033] 7- resistance wire;

[0034] 701-Metal heating element;

[0035] 702-connecting rod;

[0036] 8-Fixing bolts;

[0037] 9-Flange cover. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0039] Certain words are used in the specification and subsequent claims to refer to specific components or parts. A person of ordinary skill in the art should understand that technical users or manufacturers may refer to the same component or part with different nouns or terms. This specification and the subsequent claims do not use differences in names as a way to distinguish components or parts, but rather use differences in the functions of components or parts as the criteria for distinction. The words "including" and "comprising" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0040] It should be noted that, in the description of the present invention, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and "approximately", or "approximately", "substantially", "left and right" and the like to indicate directions or positional relationships or parameters are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description content, and do not indicate or imply that the device or element referred to must have a specific direction, specific size or be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0041] See Figure 1-7 An embodiment of the present invention provides a radiant tube heating device, which is installed together with a radiant tube. The radiant tube includes an outer shell 1, one end of which is open and the other end is closed. The radiant tube heating device includes: a main heating element, the electrode of the main heating element serves as the cold end of the radiant tube, and the cold end is provided with a fixing seat 2. The outer side of the inner cavity of the fixing seat 2 is provided with a cavity 201, and the cavity 201 is connected to a connecting elbow 3. The connecting elbow 3 is also connected to a heat dissipation device. The fixing seat 2 is close to the outer periphery of the open end of the outer shell 1 of the radiant tube; the electrode is fixed by an insulating block 4, and the insulating block 4 is provided at the open end of the outer shell 1. The main heating element is fixed inside the outer shell 1 of the radiant tube by heat storage ceramics 5 and a partition 6.

[0042] The primary heating element is a U-shaped resistance wire 7, comprising a metal heating element 701 and a connecting rod 702. The metal heating element 701 is connected to two connecting rods 702 at each end. The metal heating element 701 is arranged throughout the radiant tube. The connecting rods 702 pass through the insulating block 4 and extend outside the radiant tube, serving as electrodes for the primary heating element. In this embodiment, the insulating block 4 is also provided with a fixing bolt 8 for securing the insulating block 4.

[0043] For details, see Figure 2 The core heating element of the radiant tube heating device is the resistance wire 7. The resistance wire body consists of two parts: the connecting rod 702 and the metal heating element 701. The connecting rod 702 is made of 310S stainless steel and plays a connecting and conductive role. The metal heating element 701 is arranged in the entire radiant tube and is the main heating element. Its material is Cr 20 Ni 80 The resistance electric heating alloy has stable structure, good electrical and physical properties, good high temperature mechanical properties, good cold deformation plasticity, good weldability, and will not produce brittle fracture after long-term use. It is mostly used to manufacture household appliances and heating elements with working temperatures below 1000℃. The resistivity of this material is 1.110Ω·mm at 20℃. 2 / m, the resistivity is 1.129Ω·mm at 800℃ 2 / m, has a high resistivity. The connecting rod 702 and the metal heating element 701 are connected by welding. Figure 1 The connecting rod 702 shown extends out of the outside of the radiation tube and serves as the electrode of the metal heating element 701. An M12 external thread is provided on the connecting rod for connecting to a terminal block.

[0044] In this embodiment, the fixing base 2 is a fixing structure of the radiant tube heating device. Figure 3 , a cavity is provided inside to cool the internal structure and the fixed part of the radiant tube. The connecting elbow 3 connects the inner cavity of the fixing base 2 with the heat dissipation device. When the device is in operation, water vapor will be introduced into it to dissipate heat and cool down, protecting the structure of the insulating block 4 from being damaged by high temperature, while ensuring that the temperature of the radiant tube structure outside the furnace body is not too high. Figure 4 In this embodiment, the insulating block 4 is provided with two first through holes 401 through which the connecting rod 702 can pass, and a second through hole 402 through which the fixing bolt 8 can pass. The insulating block 4 is used to support the two electrodes of the resistance wire 7 and the fixing bolt 8. The insulating block 4 is made of polytetrafluoroethylene insulating material.

[0045] The structure of the fixing bolt is as follows Figure 5 As shown, the radiant tube heating device in this embodiment also includes a temperature measuring thermocouple, and an opening is provided inside the fixed bolt 8. The fixed bolt 8 is provided with an M24 external thread connected to the insulating block 4, and an M12 internal thread is provided inside for fixing the temperature measuring thermocouple inserted into the interior of the radiant tube. The temperature measuring thermocouple is inserted through the opening of the fixed bolt, extends into the interior of the radiant tube through the openings on the heat storage ceramic 5 and the partition 6, and is used to measure the temperature of a specific position of the radiant tube.

[0046] In this embodiment, the structures of the heat storage ceramic 5 and the partition 6 are as follows: Figure 6 、 Figure 7 As shown, the heat storage ceramics 5 and partitions 6 in the radiant tube support and store heat for the resistance wire 7. The heating portion of the radiant tube in this device is approximately 6 meters long. This structure allows for varying tube lengths by adjusting the length of the resistance wire, the number of heat storage ceramics, and the number of partitions, depending on the desired heating length.

[0047] In this embodiment, a flange cover 9 is further provided at the open end of the outer shell 1 . The flange cover 9 is located at the outer periphery of the insulating block 4 , and the flange cover 9 is fastened to the fixing base 2 .

[0048] The radiant tube heating device provided by the present invention needs to be connected to the heat dissipation device before operation. After the heat dissipation device is operating stably, the switch of the connecting rod electrode on the resistance wire 7 is turned on. The voltage provided by the power supply can be adjusted to adjust the heating temperature of the complex. The temperature measuring thermocouple can reflect the heating temperature inside the radiant tube in real time. The required voltage and current can be adjusted by referring to the reading of the thermocouple.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A radiant tube heating device, mounted together with a radiant tube, wherein the radiant tube comprises an outer shell, one end of the outer shell being open and the other end being closed, characterized in that: The radiant tube heating device comprises: A main heating element, wherein the electrode of the main heating element serves as the cold end of the radiant tube, the cold end is provided with a fixing seat, a cavity is provided outside the inner cavity of the fixing seat, the cavity is connected to a connecting elbow, and the connecting elbow is further connected to a heat dissipation device, and the fixing seat is close to the outer periphery of the open end of the outer shell of the radiant tube; The electrodes are fixed by using insulating blocks, and the insulating blocks are arranged at the open end of the outer shell. The main heating element is fixed inside the outer shell of the radiation tube by heat storage ceramics and partitions.

2. The radiant tube heating device according to claim 1, characterized in that: The main heating element is a resistance wire in a U shape. The resistance wire includes a metal heating element and a connecting rod. Two ends of the metal heating element are connected to two connecting rods. The metal heating element is arranged in the entire radiation tube.

3. The radiant tube heating device according to claim 2, characterized in that: The connecting rod passes through the insulating block and extends out of the radiant tube to serve as an electrode of the main heating element.

4. The radiant tube heating device according to claim 2, characterized in that: The insulating block is also provided with a fixing bolt for fixing the insulating block.

5. The radiant tube heating device according to claim 4, characterized in that: The radiant tube heating device also includes a temperature measuring thermocouple. An opening is provided inside the fixed bolt. The fixed bolt is provided with an external external thread connected to the insulating block, and an internal internal thread is provided to fix the temperature measuring thermocouple inserted into the inside of the radiant tube.

6. The radiant tube heating device according to claim 5, characterized in that: The temperature measuring thermocouple is inserted into the opening of the fixing bolt, extends into the interior of the radiation tube through the openings on the heat storage ceramic and the partition, and is used to measure the temperature of a specific position of the radiation tube.

7. The radiant tube heating device according to claim 4, characterized in that: The insulating block is provided with two first through holes through which the connecting rod can pass and a second through hole through which the fixing bolt can pass. The insulating block is used to support the two electrodes of the resistance wire and the fixing bolt.

8. The radiant tube heating device according to claim 1, characterized in that: A flange cover is further provided at the open end of the outer shell. The flange cover is located at the outer periphery of the insulating block and is fastened to the fixing seat.

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