U-shaped resistor ceramic inlay device for resistance furnace

Abstract

The utility model belongs to the technical field of inorganic non-metal material equipment, and particularly relates to a U-shaped resistor ceramic inlay device for a resistance furnace. The device comprises a rectangular frame and a resistor module, the rectangular frame is formed by splicing a front plate and three side plates, the front plate is provided with a feeding port, and the side plates are provided with cavities; a plurality of resistor modules are arranged in the cavity of the side plate side by side; and the resistor module comprises a built-in U-shaped resistor. According to the utility model, the plurality of U-shaped resistors are arranged in the resistance furnace in parallel, so that the condition that the whole resistance furnace cannot work due to the damage of a certain U-shaped resistor is avoided; the U-shaped resistor is wrapped in the positioning plate, so that the U-shaped resistor is prevented from chemically reacting with volatile substances in the furnace chamber, the U-shaped resistor is further prevented from being corroded by the volatile substances and deteriorated, and the service life of the U-shaped resistor is prolonged while the heating efficiency of the U-shaped resistor is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of inorganic non-metallic material equipment, and particularly relates to a U-shaped resistance ceramic inlay device for a resistance furnace. Background Art

[0002] U-shaped resistors (silicon molybdenum rods or silicon carbide rods) are electric heating elements for various electric furnaces and kilns, and have been widely used in fields such as national defense, machinery, metallurgy, light chemical industry, ceramics, semiconductors, analysis and testing, and scientific research. U-shaped resistors are usually exposed in the furnace chamber, and are prone to chemical reactions with volatile substances (organic substances containing phosphorus, sulfur, etc.; reducing gases such as hydrogen and CO; gas phases containing aluminum and silicon, etc.) in the heat treatment samples in the furnace chamber under the high-temperature environment of the resistance furnace. For example: ① The high-temperature reduction reaction of U-shaped resistors with reducing media such as H 2 and CO; ② The high-temperature glass phase reaction of U-shaped resistors with gas phases containing aluminum and silicon; ③ The high-temperature sulfidation or phosphidation reaction of U-shaped resistors with organic substances containing phosphorus and sulfur.

[0003] The above chemical reactions will cause corrosion and deterioration of U-shaped resistors (silicon molybdenum rods or silicon carbide rods), resulting in problems such as an increase in resistance value and power consumption, and in severe cases, even breakage of U-shaped resistors and a significant reduction in service life. Summary of the Invention

[0004] The purpose of the utility model is to solve the problem that U-shaped resistors in the prior art will have chemical reactions with volatile substances in the heat treatment samples in the resistance furnace, and a U-shaped resistance ceramic inlay device for a resistance furnace is proposed. The device can effectively protect the U-shaped resistor, avoid corrosion and deterioration of the U-shaped resistor, and extend the service life of the U-shaped resistor.

[0005] To achieve the above purpose, the technical solution adopted is:

[0006] A rectangular frame, which is formed by splicing a front plate and three side plates. The front plate is provided with a feed port, and the side plates are provided with cavities;

[0007] And a resistance module. There are multiple resistance modules, which are arranged side by side in the cavities of the side plates; the resistance module includes an internal U-shaped resistor.

[0008] According to the U-shaped resistance ceramic inlay device for a resistance furnace of the utility model, further, the feed port of the front plate is arranged corresponding to the furnace door position of the resistance furnace, and the sample to be processed enters the interior of the resistance furnace from the feed port.

[0009] According to the U-shaped resistance ceramic inlay device for a resistance furnace of the utility model, further, both ends of the front plate and the side plates are provided with bosses, and the front plate and the side plates, and the side plates and the side plates are joined end to end through the bosses to form a rectangular frame.

[0010] For the U-shaped resistor ceramic inlay device for a resistance furnace according to the present utility model, further, the resistor module further includes a positioning plate inserted into the cavity of the side plate. A U-shaped groove is formed in the positioning plate, and the U-shaped resistor is fixedly arranged in the U-shaped groove.

[0011] For the U-shaped resistor ceramic inlay device for a resistance furnace according to the present utility model, further, the cross-section of the U-shaped resistor is circular.

[0012] For the U-shaped resistor ceramic inlay device for a resistance furnace according to the present utility model, further, the two vertical portions of the U-shaped resistor extend outwards from the U-shaped groove and are locked and fixed in the positioning plate by fasteners.

[0013] For the U-shaped resistor ceramic inlay device for a resistance furnace according to the present utility model, further, the fasteners include two clamping plates and two groups of positioning blocks. The two clamping plates and the two groups of positioning blocks jointly clamp the extending portions of the two vertical portions of the U-shaped resistor.

[0014] For the U-shaped resistor ceramic inlay device for a resistance furnace according to the present utility model, further, a through hole is formed in the center of the clamping plate, and a bolt is used to pass through the through hole to lock and connect the two clamping plates.

[0015] For the U-shaped resistor ceramic inlay device for a resistance furnace according to the present utility model, further, each group of positioning blocks includes two symmetrically arranged positioning blocks. Each positioning block is placed inside the clamping plate. Arc-shaped grooves are formed on the opposite sides of the two positioning blocks, and the vertical portion of the U-shaped resistor is clamped in the two arc-shaped grooves.

[0016] Adopting the above technical solution, the beneficial effects obtained are as follows:

[0017] The U-shaped resistor ceramic inlay device for a resistance furnace of the present utility model has a simple structure, novel design, and strong practicability. Multiple U-shaped resistors are connected in parallel in the resistance furnace, avoiding the situation that the entire resistance furnace cannot work due to the damage of a certain U-shaped resistor; the U-shaped resistor is wrapped in the positioning plate, preventing the U-shaped resistor from chemically reacting with the volatile substances in the furnace cavity, thereby avoiding the U-shaped resistor from being corroded and deteriorated by the volatile substances, ensuring the heating efficiency of the U-shaped resistor while extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments of the present utility model will be briefly introduced below. Among them, the drawings are only used to show some embodiments of the present utility model, rather than limiting all embodiments of the present utility model thereto.

[0019] Figure 1 It is a schematic structural diagram of the U-shaped resistor ceramic inlay device for a resistance furnace of the present utility model;

[0020] Figure 2 is the installation schematic diagram of the U-shaped resistor of the present utility model in the side plate;

[0021] Figure 3 is the structural schematic diagram of the resistor module of the present utility model;

[0022] Figure 4 is the cross-sectional view of the positioning plate of the present utility model;

[0023] Figure 5 is the structural schematic diagram of the fastener of the present utility model.

[0024] The meanings represented by the serial numbers in the figure are as follows:

[0025] 100. Rectangular frame, 110. Front plate, 111. Feed inlet, 120. Side plate, 121. Cavity, 122. Boss;

[0026] 200. Resistor module, 210. Positioning plate, 211. U-shaped groove, 220. U-shaped resistor, 230. Fastener, 231. Clamping plate, 232. Positioning block. Detailed implementation manners

[0027] In the following, the exemplary solutions of the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present utility model. Unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those of ordinary skill in the art.

[0028] As Figure 1 shown, the U-shaped resistor ceramic inlay device for a resistance furnace in this embodiment includes a rectangular frame 100 and a resistor module 200. The rectangular frame 100 is formed by splicing one front plate 110 and three side plates 120. A feed inlet 111 is provided on the front plate 110, and a cavity 121 is provided on the side plate 120; there are multiple resistor modules 200, and they are installed side by side in the cavities 121 of each side plate 120; the resistor module 200 includes an internal U-shaped resistor 220. Embedding the U-shaped resistor 200 internally can prevent the resistor from coming into contact with external volatile substances and undergoing chemical corrosion.

[0029] Furthermore, the materials used for the front plate 110 and the side plate 120 are zirconia toughened alumina (ZTA) ceramic materials, and the zirconia content is 10 - 20 wt%, and the thermal conductivity is greater than 20 W / m·K.

[0030] The U-shaped resistor ceramic inlay device for a resistance furnace in this embodiment is completely built inside the resistance furnace and is used for heating the sample to be processed. As Figure 1As shown, the feeding port 111 of the front plate 110 is arranged corresponding to the furnace door position of the resistance furnace, and the sample to be processed enters the interior of the resistance furnace from the furnace door and the feeding port 111 of the front plate 110.

[0031] As Figure 1 and Figure 2 shown, bosses 122 are provided at both ends of the front plate 110 and the side plates 120, and a rectangular frame 100 is formed by splicing and welding a front plate 110 and three side plates 120 end to end through the bosses.

[0032] As Figure 3 shown, the resistance module 200 further includes a positioning plate 210, a U-shaped groove 211 is formed in the positioning plate 210, and the U-shaped resistor 220 is fixedly arranged in the U-shaped groove 211.

[0033] Furthermore, a plurality of positioning plates 210 are inserted side by side into the cavities 121 of the respective side plates 120, and there is a clearance fit between the positioning plate 210 and the side plate 120, and the fit clearance is 0.5 - 1 mm.

[0034] Furthermore, there is a clearance fit between the U-shaped resistor 220 and the positioning plate 210, and the fit clearance is 1 - 2 mm.

[0035] Furthermore, the positioning plate 210 is made of recrystallized silicon carbide ceramic material, and the silicon carbide content is greater than 99 wt%, and the thermal conductivity is greater than 30 W / m·K.

[0036] As Figure 3 shown, the cross-section of the U-shaped resistor 220 is circular.

[0037] As Figure 3 and Figure 4 shown, the U-shaped resistor 220 is inserted into the U-shaped groove 211 from the bottom of the positioning plate 210, and two vertical portions of the U-shaped resistor 220 extend outwards from the U-shaped groove 211; the extending portions of the U-shaped resistor 220 are locked with fasteners 230 to fix the U-shaped resistor 220 in the positioning plate 210.

[0038] As Figure 3 and Figure 5 shown, the fastener 230 includes two clamping plates 231 and two groups of positioning blocks 232, and the two clamping plates 231 and the two groups of positioning blocks 232 jointly clamp the extending portions of the two vertical portions of the U-shaped resistor 220.

[0039] Furthermore, the positions of the two groups of positioning blocks 232 in the two clamping plates 231 can be slidably adjusted according to the actual situation of the U-shaped resistor 220 to adapt to U-shaped resistors 220 of different sizes.

[0040] Furthermore, the clamping plates 231 are made of heat-resistant stainless steel channels, and the two channels are arranged oppositely.

[0041] As Figure 5 shown, through holes are provided at the centers of the two clamping plates 231, and bolts are used to sequentially pass through the two through holes to lock and connect the two clamping plates 231, thereby fixedly clamping the two groups of positioning blocks 232 between the two clamping plates 231.

[0042] As Figure 5 shown, each group of positioning blocks 232 includes two symmetrically arranged positioning blocks 232. Each positioning block 232 is placed in a channel steel. Arc-shaped grooves with the same size are provided on the opposite sides of the two positioning blocks 232, and the vertical part of the U-shaped resistor 220 is clamped in the two arc-shaped grooves.

[0043] Furthermore, the material used for the positioning block 232 is alumina insulating ceramic, and the alumina content is greater than 96 wt%.

[0044] Furthermore, both the bolts and nuts used in the fastener 230 are made of high heat-resistant metal materials.

[0045] In this embodiment, the U-shaped resistor 220 is wrapped in the positioning plate 210, and the part extending from the top of the positioning plate 210 is installed inside the side wall of the resistance furnace. Therefore, during actual use, any part of the U-shaped resistor 220 will not be exposed in the furnace cavity of the resistance furnace, and thus will not chemically react with the volatile substances in the heat treatment sample in the furnace cavity and cause damage.

[0046] The working principle of this application is:

[0047] The assembly of this utility model:

[0048] S1. First, splice and connect a front plate 110 and three side plates 120, and weld them into a rectangular frame 100;

[0049] S2. Use bolts and nuts to preliminarily assemble and connect the clamping plate 231 and two groups of positioning blocks 232 into a fastener 230;

[0050] S3. Insert the U-shaped resistor 220 from the bottom of the U-shaped groove 211 of the positioning plate 210 and pass through from the top of the positioning plate 210;

[0051] S4. Install the fastener 230 on the U-shaped resistor 220, and tighten the bolts and nuts so that the U-shaped resistor 220 is completely fixed in the positioning plate 210 to prepare a resistor module 200;

[0052] S5. Place the respective resistor modules 200 side by side into the cavity 121 of the side plate 120 in sequence.

[0053] Thus, the assembly of the device is completed.

[0054] After the device is assembled, it is installed in a resistance furnace. The U-shaped resistor 220 is connected to an external power supply, and each U-shaped resistor 220 is in a parallel structure to prevent the entire device from malfunctioning due to the damage of a certain U-shaped resistor 220.

[0055] It should be noted that when there is an expression of "connected", "coupled" or "linked" between one element and another element, it may mean a direct connection, coupling or linkage, but it should be understood that there may be an intermediate element between the two; that is, it covers the positional relationship of direct connection and indirect connection.

[0056] It should be noted that the use of similar words such as "a" or "an" does not necessarily imply a limitation in quantity. Similar words such as "comprising" or "including" mean that the element or object appearing before this word covers the elements or objects listed after this word and their equivalents, without excluding other elements or objects.

[0057] It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", etc. are only used to represent the relative positional relationship. This is for the convenience of describing the present utility model, rather than meaning that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0058] The preferred embodiments for implementing the present utility model have been described in detail above. However, it should be understood that the functions of these embodiments are only for illustration, rather than limiting the scope, application or construction of the present utility model in any way. The protection scope of the present utility model is defined by the appended claims and their equivalent means. Those of ordinary skill in the art can make many changes to the foregoing embodiments under the teaching of the present utility model, and these changes all fall within the protection scope of the present utility model.

Claims

1. A U-shaped resistor ceramic inlay device for a resistance furnace, characterized in that: include: A rectangular frame, which is composed of a front plate and three side plates, wherein the front plate is provided with a feed inlet, and the side plates are provided with a cavity; And a resistance module, wherein there are a plurality of resistance modules, which are installed side by side in the cavity of the side plate; the resistance module includes a built-in U-shaped resistor.

2. The U-shaped resistor ceramic inlay device for a resistance furnace according to claim 1, characterized in that: The feed inlet of the front plate is arranged corresponding to the furnace door of the resistance furnace, and the sample to be processed enters the resistance furnace from the feed inlet.

3. The U-shaped resistor ceramic inlay device for a resistance furnace according to claim 1, characterized in that: Both ends of the front plate and the side plate are provided with bosses, and the front plate and the side plate, and the side plate and the side plate are connected end to end through the bosses to form a rectangular frame.

4. The U-shaped resistor ceramic inlay device for a resistance furnace according to claim 1, characterized in that: The resistor module further comprises a positioning plate inserted in the cavity of the side plate, a U-shaped groove is provided in the positioning plate, and the U-shaped resistor is fixed in the U-shaped groove.

5. The U-shaped resistor ceramic inlay device for a resistance furnace according to claim 4, characterized in that: The cross section of the U-shaped resistor is circular.

6. The U-shaped resistor ceramic inlay device for a resistance furnace according to claim 5, characterized in that: The two vertical parts of the U-shaped resistor extend outward from the U-shaped groove and are locked and fixed in the positioning plate by fasteners.

7. The U-shaped resistor ceramic inlay device for a resistance furnace according to claim 6, characterized in that: The fastener comprises two clamping plates and two groups of positioning blocks, and the two clamping plates and the two groups of positioning blocks jointly clamp the two vertical protruding parts of the U-shaped resistor.

8. The U-shaped resistor ceramic inlay device for a resistance furnace according to claim 7, characterized in that: A through hole is provided in the center of the clamping plate, and a bolt is passed through the through hole to lock and connect the two clamping plates.

9. The U-shaped resistor ceramic inlay device for a resistance furnace according to claim 7, characterized in that: Each group of positioning blocks includes two symmetrically arranged positioning blocks, each positioning block is placed inside the clamping plate, and arc-shaped grooves are opened on opposite sides of the two positioning blocks, and the vertical parts of the U-shaped resistor are clamped in the two arc-shaped grooves.

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