Diamond wire base material heating furnace

Abstract

The diamond wire base material heating furnace comprises a furnace body and a furnace cover, a heat insulation unit is arranged in the furnace body and comprises a heat preservation bottom plate, heat preservation side plates and a heat insulation plate, the heat preservation side plates are arranged on the periphery of the upper portion of the heat preservation bottom plate, the heat insulation plate is arranged in the middle of the upper portion of the heat preservation bottom plate, and the heat preservation side plates surround the periphery of the heat insulation plate; wire passing openings are formed in the two ends of the furnace body and used for diamond wire base materials to enter and exit from the furnace body, wire grooves are formed in the heat preservation side plates corresponding to the wire passing openings, and the interior and exterior of the heating furnace are communicated through the wire grooves. Air stopping mechanisms are symmetrically arranged at wire passing openings in the two ends of the furnace body to prevent high-temperature gas in the heating furnace from flowing out through wire grooves. A furnace cover is hinged to the furnace body and comprises a top cover, a top plate and a reinforcing frame, the top cover and the top plate are connected and combined to form a closed rectangular space, the reinforcing frame is arranged in the rectangular space, heat preservation cotton is further arranged in the rectangular space, and the heat preservation cotton is in close contact with the reinforcing frame. The heating furnace has good heat preservation and heat insulation performance and can effectively resist high-temperature deformation at the same time.

Description

Technical Field

[0001] This invention relates to the field of heating furnace technology, and more particularly to a diamond wire substrate heating furnace. Background Technology

[0002] Diamond wire is a cutting tool made by uniformly bonding diamond microparticles to a high-strength high-carbon steel wire or tungsten wire matrix. The preparation of diamond wire involves a drawing process, requiring multiple drawing passes through a die to ensure the cross-section of the diamond wire gradually decreases to achieve the desired diameter.

[0003] The drawing process uses a wire drawing machine. After being drawn, the diamond wire is neatly wound onto an I-beam. With technological advancements, the required diameter of the drawn wire is becoming increasingly fine, with the maximum diameter of tungsten wire and high-carbon steel wire not exceeding 70 micrometers. However, due to factors such as equipment operating parameters and drawing die design, if the wound wire is simply pulled out to a certain length and left to rest, it may become coiled or wavy, resulting in unstable coil diameter and a wavy wire shape, which fails to meet quality requirements.

[0004] For busbars exhibiting the aforementioned conditions, straightening of the entire coil of wire is necessary. The principle of straightening involves heating the busbar during the unwinding and winding processes to uniformly eliminate stress and improve coil diameter and waviness. For example, patent publication CN118635405A discloses a device and process for straightening the free coil diameter of ultrafine tungsten wire. This involves an unwinding device and a winding device to unwind and wind the wire. During this process, the wire passes through a cylindrical heating furnace tube, ensuring uniform temperature control and guaranteeing the uniform elimination of stress in the ultrafine tungsten wire.

[0005] For the heating treatment of busbars, electric heating furnaces are generally used. This requires the furnace body to be able to withstand high temperatures, resist thermal deformation, and have good heat preservation performance. However, the lining of traditional heating furnaces is mostly insulation cotton. Although insulation cotton can play a certain role in heat preservation, heat is still dissipated to the external environment under the high furnace temperature, resulting in partial heat loss and increased energy consumption. Summary of the Invention

[0006] To address the problems of poor heat preservation performance and low resistance to thermal deformation in traditional heating furnaces, this invention provides a diamond wire substrate heating furnace. By optimizing the furnace structure and insulation materials, the heating furnace achieves excellent heat preservation performance while effectively resisting high-temperature deformation.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A diamond wire substrate heating furnace includes a furnace body and a furnace cover. A heat insulation unit is installed inside the furnace body. The heat insulation unit includes a heat insulation bottom plate, heat insulation side plates, and a heat insulation plate. The heat insulation side plates are arranged around the upper part of the heat insulation bottom plate, and the heat insulation plate is arranged in the center of the upper part of the heat insulation bottom plate. The heat insulation side plates surround the heat insulation plate. An electric heating tube is installed on the heat insulation plate to facilitate the heating function of the heating furnace.

[0009] The furnace body has wire passage openings at both ends to facilitate the entry and exit of diamond wire substrate. Corresponding to the wire passage openings, the heat insulation side plate has a wire groove for the diamond wire substrate to pass through. The inside and outside of the heating furnace are connected through the wire groove. Windproof mechanisms are symmetrically arranged at the wire passage opening positions at both ends of the furnace body to prevent high-temperature gas inside the heating furnace from flowing out through the wire groove.

[0010] The furnace body is hinged to the furnace cover, which facilitates the flipping of the furnace cover. The furnace cover includes a top cover, a top plate, and a reinforcing frame. The top cover and the top plate are connected and combined to form a closed rectangular space. The reinforcing frame is set in the rectangular space to improve the structural strength of the furnace cover. Insulation cotton is also set in the rectangular space to improve the heat preservation capacity of the furnace cover. The insulation cotton is in close contact with the reinforcing frame.

[0011] Furthermore, the furnace body is a rectangular groove structure with an opening at the top, and the upper part of the furnace body is bent inward around the perimeter to form a bottom flange. The bottom flange is fastened to the insulation side plates around the perimeter, which facilitates the insulation side plates to be confined to the furnace body. The insulation bottom plate and the insulation side plates are both rectangular plates made of mica board, which have excellent high temperature resistance and insulation properties.

[0012] Furthermore, the insulation base plate is arranged horizontally, and the insulation base plate is attached to the bottom surface of the furnace body. The cross-section of the insulation base plate is consistent with the shape and size of the bottom surface of the furnace body.

[0013] The insulation side panels are arranged vertically, and the insulation side panels include long insulation side panels and short insulation side panels. The long insulation side panels are arranged on the corresponding sides on the upper part of the insulation base plate, and the number of long insulation side panels on each side is multiple arranged in parallel.

[0014] The short insulation side plates are provided on the other two sides of the upper part of the insulation base plate. The number of short insulation side plates on each side is also multiple, arranged in parallel. The upper planes of the long insulation side plates and the short insulation side plates are flush with each other and are higher than the upper plane of the insulation plate.

[0015] Furthermore, the wire passage is provided on the furnace side wall corresponding to the short insulation side plate, and the wire passage is a rectangular notch;

[0016] The upper surface of the short insulation side plate is provided with multiple equally spaced wire grooves. The wire grooves are U-shaped grooves with a width of 25-30mm. The bottom of the wire grooves is higher than the upper surface of the insulation plate by a distance of 50-60mm, which avoids contact between the substrate and the insulation plate.

[0017] Furthermore, the heat insulation board is a rectangular plate made of aluminum silicate board, which has the characteristics of high strength and high temperature resistance. The number of heat insulation boards is at least two stacked on top of each other. The bottom heat insulation board is attached to the heat insulation base plate, and the top heat insulation board has multiple long grooves on its upper surface, which are convenient for accommodating electric heating tubes.

[0018] Furthermore, the electric heating tubes are arranged in continuous bends along the long groove, with both ends of the electric heating tubes passing through the insulation side plate on either side and extending out of the furnace body; a thermocouple for monitoring temperature is also embedded in the upper surface of the top insulation plate, and the thermocouple passes through the insulation side plate on either side and extends out of the furnace body.

[0019] Furthermore, a hinge is provided at one end of the furnace body and the furnace cover to achieve hinged connection, and a support is provided at one end of the furnace body to support the furnace cover after it is flipped open.

[0020] The furnace body and furnace cover are provided with buckles at the other end to lock them in place, and the furnace cover is also provided with a handle at the other end to facilitate opening and closing of the furnace cover.

[0021] Furthermore, the top cover is a rectangular groove structure with an opening at the bottom, and the bottom of the top cover is bent inward around to form a top flange. The top plate is connected and fixed to the top flange around its perimeter, and the top flange and the bottom flange are corresponding vertically.

[0022] The top flange is symmetrically provided with sealing strips on both sides. Each sealing strip is bent into the shape of "[". The sealing strip is a sheet made of ceramic fiber pad. After the furnace cover is closed, the sealing strip is tightly pressed against the bottom flange, which reduces the loss of heat.

[0023] Furthermore, the reinforcing frame is a three-dimensional grid-like frame welded from square tubes, which is convenient to resist thermal deformation; the top plate is rectangularly recessed inward, with the recessed direction of the top plate facing the rectangular space, and outward flanges are provided around the top plate, and the top plate is connected and fixed to the top cover through the outward flanges.

[0024] The top plate has a rectangular recess containing several limiting rods arranged in a rectangular array. Each limiting rod is inverted T-shaped, and a heat-insulating rope is positioned between them, corresponding to a heat-insulating plate. The heat-insulating rope separates the electric heating element from the top plate, preventing direct impact of high temperatures on the top plate.

[0025] Furthermore, the wind-stopping mechanism includes an upper wind-stopping plate, a lower wind-stopping plate, a blowing pipe, a collecting pipe, and a circulation pipe. The upper and lower wind-stopping plates are symmetrically arranged and are both plates with a cross-section in the shape of "[". The upper wind-stopping plate is connected and fixed to the furnace cover, and the lower wind-stopping plate is connected and fixed to the furnace body. After the furnace cover is closed, the upper and lower wind-stopping plates together form a rectangular frame, and the wire trough is connected to the inside and outside of the rectangular frame.

[0026] Both the blowing pipe and the receiving pipe are pipes closed at one end. The blowing pipe is horizontally installed inside the upper wind deflector and fits against the top of the upper wind deflector. One end of the blowing pipe extends out of the upper wind deflector and is threadedly connected to a displacement sleeve. A strip-shaped blowing port is opened on the side wall of the blowing pipe located inside the upper wind deflector.

[0027] The air collection pipe is horizontally installed inside the lower air stop plate and fits against the bottom of the lower air stop plate. A strip-shaped air collection port is opened on the side wall of the air collection pipe inside the lower air stop plate. The airflow flows from the air outlet to the air collection port to form an air curtain to block the gas from flowing out of the furnace.

[0028] The circulation pipeline includes a duct fan and an air supply bend, both of which are fixedly connected to the furnace body. The open end of the air collection pipe, the duct fan, the air supply bend, the shift sleeve, and the open end of the blowing pipe are connected in sequence. The open end of the blowing pipe is spaced apart from the air supply bend and is connected to it by a threaded shift sleeve.

[0029] The beneficial effects of the present invention through the above technical solution are:

[0030] This invention incorporates a heat insulation unit within the furnace body. This unit comprises an insulated base plate, insulated side plates, and an insulation board, forming a three-dimensional heat insulation system. The electric heating element is positioned on the insulation board, effectively encasing it within the insulation unit and preventing heat loss. Simultaneously, it blocks heat transfer to the furnace body, effectively preventing thermal deformation of the furnace.

[0031] The furnace lid of this invention is equipped with a reinforcing frame inside, which improves the structural strength of the furnace lid and enhances its resistance to thermal deformation. The insulation cotton inside the furnace lid provides thermal insulation, and together with the insulation unit, it has the advantage of good thermal insulation performance, resulting in less heat loss and facilitating the reduction of temperature fluctuations during production, thus reducing energy consumption.

[0032] The wind-stopping mechanism of this invention is located at the wire passage positions at both ends of the heating furnace. The innovation of the wind-stopping mechanism lies in the fact that by circulating airflow between the air inlet and the air outlet, an inclined air curtain is formed, which can block the path of high-temperature gas flowing outward in the heating furnace, thereby effectively reducing the loss of high-temperature gas and improving the heat preservation effect of the heating furnace. Attached Figure Description

[0033] Figure 1 This is one of the isometric views of the diamond wire substrate heating furnace of the present invention.

[0034] Figure 2 This is the second isometric view of the diamond wire substrate heating furnace of the present invention.

[0035] Figure 3 This is a schematic diagram of the furnace body of the diamond wire substrate heating furnace of the present invention.

[0036] Figure 4 This is a schematic diagram of the heat insulation unit of the diamond wire substrate heating furnace of the present invention.

[0037] Figure 5 This is a cross-sectional view of the heat insulation unit of the diamond wire substrate heating furnace of the present invention.

[0038] Figure 6 This is a bottom view of the furnace lid of the diamond wire substrate heating furnace of the present invention.

[0039] Figure 7 This is a schematic diagram of the heat insulation rope of the diamond wire substrate heating furnace of the present invention.

[0040] Figure 8 This is one of the schematic diagrams of the air stop mechanism installation in Embodiment 2 of the diamond wire substrate heating furnace of the present invention. The furnace cover is in the closed state in the figure.

[0041] Figure 9 This is a schematic diagram of the air-stopping mechanism in Embodiment 2 of the diamond wire substrate heating furnace of the present invention.

[0042] Figure 10 This is a schematic diagram showing the disassembled air-stopping mechanism in Embodiment 2 of the diamond wire substrate heating furnace of the present invention.

[0043] Figure 11 This is a schematic diagram of the arrangement of the air inlet and air outlet in Embodiment 2 of the diamond wire substrate heating furnace of the present invention.

[0044] Figure 12 This is the second schematic diagram of the installation of the air stop mechanism in Embodiment 2 of the diamond wire substrate heating furnace of the present invention. The furnace cover is in the open state in the figure.

[0045] The attached diagram is labeled as follows: 1 Furnace body, 101 Bottom flange, 2 Furnace cover, 201 Top cover, 201A Top flange, 202 Top plate, 203 Reinforcing frame, 204 Insulation cotton;

[0046] 3 insulation units, 31 insulation base plate, 32 insulation side plate, 321 long insulation side plate, 322 short insulation side plate, 33 insulation board;

[0047] 41 Hinges, 42 Supports, 43 Hooks, 44 Handles;

[0048] 5. Sealing strip, 6. Electric heating tube, 7. Long groove, 8. Groove opening, 9. Thermocouple, 10. Wire groove, 11. Wire passage opening, 12. Outward flange, 13. Limiting rod, 14. Heat insulation rope.

[0049] 15 Upper air stop plate, 16 Lower air stop plate, 17 Air blowing duct, 171 Air blowing outlet, 18 Air collection duct, 181 Air collection outlet, 19 Circulation pipeline, 191 Pipeline fan, 192 Air supply bend, 20 Plug cap, 21 Displacement sleeve, 22 Pipe support, 23 Air concentrator plate, 24 Filter cartridge, 25 Adapter sleeve, 26 Limiting ring. Detailed Implementation

[0050] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings:

[0051] Embodiment 1:

[0052] As Figures 1-7 shown, a wire saw substrate heating furnace includes a furnace body 1 and a furnace cover 2. The furnace body 1 is made of stainless steel. The furnace body 1 is a rectangular groove structure with an open upper part. The four sides of the upper part of the furnace body 1 are bent inward to form a bottom flanging 101. Notches are formed on both sides of the furnace body 1 to form wire passing ports 11, as Figure 3 shown.

[0053] An insulating unit 3 is arranged in the furnace body 1. The insulating unit 3 includes a heat preservation bottom plate 31, heat preservation side plates 32 and heat insulating plates 33, as Figure 4 and Figure 5 shown. The heat preservation bottom plate 31 and the heat preservation side plates 32 are both rectangular plates made of mica plates. Among them, the heat preservation bottom plate 31 is horizontally arranged and is in contact with the bottom surface of the furnace body 1. The cross-section of the heat preservation bottom plate 31 is the same as the shape and size of the inner bottom surface of the furnace body 1, ensuring that the heat preservation bottom plate 31 will not be horizontally offset after being installed in the furnace body 1.

[0054] Heat preservation side plates 32 are arranged around the upper part of the heat preservation bottom plate 31. The heat preservation side plates 32 are vertically arranged. The four surrounding heat preservation side plates 32 enclose to form a "mouth" shape. Each side of the heat preservation side plates 32 is in contact with the side wall of the furnace body 1, and the bottom flanging 101 is buckled on the surrounding heat preservation side plates 32 to limit the upward movement of the heat preservation side plates 32.

[0055] In this embodiment, the heat preservation side plates 32 include long heat preservation side plates 321 and short heat preservation side plates 322. The upper planes of the long heat preservation side plates 321 and the short heat preservation side plates 322 are flush and both are higher than the upper plane of the heat insulating plate 33. Long heat preservation side plates 321 are arranged on the two opposite sides corresponding to the upper part of the heat preservation bottom plate 31. The number of long heat preservation side plates 321 on each side is three arranged in parallel. The length of the long heat preservation side plates 321 is equal to the length of the furnace body 1, and the long heat preservation side plates 321 are arranged along the length direction of the furnace body 1.

[0056] Short heat preservation side plates 322 are arranged on the other two opposite sides corresponding to the upper part of the heat preservation bottom plate 31. The length of the short heat preservation side plates 322 is less than the length of the long heat preservation side plates 321. The short heat preservation side plates 322 are arranged along the width direction of the furnace body 1. The number of short heat preservation side plates 322 on each side is two arranged in parallel. It should be noted that each short heat preservation side plate 322 is formed by laminating a number of thin mica plates, that is, by arranging a number of thin mica plates side by side, a short heat preservation side plate 322 is formed, and at least two short heat preservation side plates 322 of this form are arranged on one side of the furnace body 1.

[0057] It is understandable that each long insulation side panel 321 is made of a single piece of mica board with a thickness of 60-80mm; while each short insulation side panel 322, although it also has a certain thickness, is made of several thin mica boards with a maximum thickness of 5mm arranged side by side. The thin mica boards are in contact with each other, so they can more effectively slow down the transfer of heat.

[0058] A heat insulation board 33 is centrally located on the upper part of the heat insulation base plate 31. Since the heat insulation side plates 32 are located around the heat insulation base plate 31, they do not affect the arrangement of the heat insulation board 33. After the heat insulation board 33 is arranged, the heat insulation side plates 32 surround the heat insulation board 33. The heat insulation board 33 is a rectangular plate made of aluminum silicate board. The short heat insulation side plates 322 are arranged on the short side of the heat insulation board 33, while the long heat insulation side plates 321 are arranged on the long side of the heat insulation board 33.

[0059] In this embodiment, the heat insulation board 33 is made of aluminum silicate board, which has excellent heat insulation performance. There are at least two heat insulation boards 33 arranged in an upper and lower stacked manner, with the lowermost heat insulation board 33 being attached to the insulation base plate 31.

[0060] The function of the furnace cover 2 is to close the furnace body 1. The furnace cover 2 is hinged to the furnace body 1. After the furnace cover 2 is flipped up, it covers the top of the heat insulation side plate 32 and the heat insulation plate 33, thereby closing the furnace body 1. When installing the furnace cover 2, there are three hinges 41 on the corresponding end of the furnace body 1 and the furnace cover 2. The hinges 41 are used to achieve the hinged installation of the furnace cover 2, so the furnace cover 2 can be flipped up and closed.

[0061] Meanwhile, to limit the opening angle of the furnace cover 2, a support 42 is provided at one end of the furnace body 1. The support 42 supports the furnace cover 2 after it is flipped open, ensuring that the furnace cover 2 can remain fixed at a certain tilt angle and preventing the furnace cover 2 from being opened excessively. The support 42 is composed of an L-shaped plate, with triangular ribs at the bend of the L-shaped plate. At the same time, a latch 43 is provided at the other end of the furnace body 1 corresponding to the furnace cover 2. The furnace cover 2 is locked by the latch 43 and cannot be opened after being locked. When the latch 43 is manually unlocked, the furnace cover 2 can be flipped open. A handle 44 is also provided at the other end of the furnace cover 2, which facilitates the opening and closing of the furnace cover 2.

[0062] In this embodiment, the furnace cover 2 includes a top cover 201, a top plate 202, and a reinforcing frame 203. Both the top cover 201 and the top plate 202 are made of stainless steel. The top cover 201 is a rectangular groove structure with an opening at the bottom. The lower part of the top cover 201 is bent inward to form a top flange 201A. The top flange 201A and the bottom flange 101 are corresponding vertically.

[0063] A top plate 202 is installed at the opening of the top cover 201. The top plate 202 is connected and fixed to the top flange 201A around its perimeter, thus allowing the top plate 202 to close the top cover 201. Furthermore, the top cover 201 and the top plate 202, when combined, form a closed rectangular space. A reinforcing frame 203 is installed within this rectangular space. The reinforcing frame 203 is a three-dimensional mesh frame welded from square tubing, which can improve the furnace cover 2's resistance to thermal deformation. Figure 6 As shown. The rectangular space is also filled with thermal insulation cotton 204, which is in close contact with the reinforcing frame 203. It is equivalent to the thermal insulation cotton 204 being filled inside the reinforcing frame 203. The thermal insulation cotton 204 can be made of ceramic fiber blanket.

[0064] It can be seen that the furnace body 1 is lined with heat insulation unit 3. The heat insulation unit 3 uses a mica-board insulated bottom plate 31 and insulated side plate 32, and an aluminum silicate board insulated plate 33, which ensures that the heat inside the furnace body 1 is concentrated and does not easily diffuse outward. The heating element is separated from the furnace body 1 by the heat insulation unit 3. The heat insulation unit 3 can confine the heat of the heating element inside and prevent the heat from being transferred to the furnace body 1, thereby reducing the thermal deformation of the furnace body 1.

[0065] The furnace cover 2 has a top cover 201 and a top plate 202 arranged around the reinforcing frame 203, thereby enclosing the reinforcing frame 203 and increasing the structural strength of the furnace cover 2 and improving its ability to resist thermal deformation; the furnace cover 2 is equipped with insulation cotton 204 inside, so that the furnace cover 2 has a certain heat insulation capacity.

[0066] The entire heating furnace must be used with the furnace cover 2 closed. To improve the heat preservation at the joint between the furnace cover 2 and the furnace body 1, a sealing strip 5 is installed between the joint surfaces of the furnace cover 2 and the furnace body 1 after the furnace cover 2 is closed. Specifically, sealing strips 5 are symmetrically arranged on the upper and lower sides of the top flange 201A. Each sealing strip 5 is bent into a "[" shape, and there is a gap between the two sealing strips 5, which corresponds to the wire passage 11. The sealing strip 5 is a sheet made of ceramic fiber pad, which has the characteristics of high temperature resistance. After the furnace cover 2 is closed, the sealing strip 5 is pressed tightly against the bottom flange 101, and the deformation of the sealing strip 5 itself prevents the heat inside the furnace body 1 from being transferred outward.

[0067] After the heating furnace has efficient heat preservation capabilities, in order to realize the basic functions of the heating furnace, a heating element is set inside the heating furnace, which is an electric heating tube 6.

[0068] Specifically, the uppermost heat insulation plate 33 has multiple long grooves 7 on its upper surface, arranged in a straight line at intervals. The long grooves 7 are rectangular. Furthermore, slots 8 are formed on both sides of the upper end of the upper heat insulation plate 33. With the slots 8, the upper width of the heat insulation plate 33 is smaller than its lower width. The slots 8 are essentially structures formed by cutting off a long strip from both sides of the upper end of the heat insulation plate 33. The slots 8 extend along the length of the heat insulation plate 33 and connect to the ends of the long grooves 7. The slots 8 are used to accommodate the bends of the electric heating element 6.

[0069] The electric heating tube 6 is arranged in a continuous bend along the long groove 7, thus forming a continuously bent "S" shape. The bends of the electric heating tube 6 are located within the groove opening 8. Both ends of the electric heating tube 6 pass through multiple insulation side plates 32 on either side and extend out of the furnace body 1. That is, after both ends of the electric heating tube 6 pass through the long insulation side plate 321 on either side, they extend out of the furnace body 1 and are connected to the power cord, thereby supplying power to the electric heating tube 6.

[0070] The uppermost heat insulation plate 33 also has a thermocouple 9 embedded in its upper surface for monitoring temperature. The thermocouple 9 passes through multiple heat insulation side plates 32 on either side and extends out of the furnace body 1. After extending out of the furnace body 1, the thermocouple 9 is connected to a temperature measuring instrument, thereby sending the measured temperature data to the temperature measuring instrument and displaying it.

[0071] After the heating furnace has the basic functions of heating and temperature monitoring, in order to enable the diamond wire substrate to pass through the heating furnace, multiple wire grooves 10 are arranged at intervals on the upper plane of the short insulation side plate 322. The wire grooves 10 on both sides of the short insulation side plate 322 correspond one to one. The wire grooves 10 are U-shaped grooves with a width of 25-30mm. Preferably, the width of the wire grooves 10 is 30mm. The wire grooves 10 are used for the substrate to pass through, and the substrate is arranged in the center of the wire grooves 10. After the furnace cover 2 is closed, the inside and outside of the heating furnace are connected through the wire grooves 10.

[0072] The short insulating side plate 322 with wire groove 10 is similar to a comb structure. The bottom of the wire groove 10 is higher than the upper plane of the heat insulation plate 33 by 50-60mm. At the same time, a wire passage 11 is opened on the side wall of the furnace body 1 corresponding to the short insulating side plate 322. The wire passage 11 is a rectangular notch and is used for diamond wire substrate to enter and exit the heating furnace.

[0073] In this way, a diamond wire substrate enters and exits the heating furnace through two corresponding wire slots 10, and the substrate passes through the heat insulation plate 33, where it is heated by the electric heating tube 6. The substrate does not come into contact with the heat insulation plate 33. The entire substrate only passes through the heating furnace, and it passes through in mid-air without contacting any parts of the heating furnace. Since there are multiple parallel wire slots 10, multiple diamond wire substrates can be threaded through the heating furnace simultaneously, and the multiple diamond wire substrates are arranged side by side on the same horizontal plane.

[0074] It should be noted that in the application of the heating furnace, the top plate 202 and the heat insulation plate 33 are distributed vertically. Therefore, the heat from the electric heating tube 6 on the heat insulation plate 33 will be transferred to the top plate 202 first. After the top plate 202 is exposed to high temperature for a long time, its performance will be affected, and the top plate 202 may deform.

[0075] Therefore, the top plate 202 is rectangularly recessed inward, with the recess facing the rectangular space. Outward-facing flanges 12 are provided around the top plate 202, and the top plate 202 is connected and fixed to the top cover 201 via these flanges 12. Specifically, the outward-facing flanges 12 and the top flange 201A are fixed together with bolts. This effectively moves the top plate 202 away from the electric heating element 6, increasing the vertical distance between the top plate 202 and the electric heating element 6.

[0076] Meanwhile, a number of limiting rods 13 are provided in the rectangular recess of the top plate 202. These limiting rods 13 are arranged in a rectangular array, and each limiting rod 13 is an inverted T-shaped round rod. The limiting rods 13 are threadedly connected to the top plate 202, facilitating their assembly and disassembly. Figure 7 As shown, the limiting rod 13 corresponding to the reinforcing frame 203 also passes into the reinforcing frame 203 and is threadedly connected to it.

[0077] A heat-insulating rope 14 is installed between several limiting rods 13. The heat-insulating rope 14 is made of ceramic fiber packing. A certain length of heat-insulating rope 14 is continuously wound between the limiting rods 13 in an "S" shape to form a plate-like heat insulation layer. Under the restriction of the limiting rods 13, the heat-insulating rope 14 can be prevented from detaching from the top plate 202. After the furnace cover 2 is closed, the heat-insulating rope 14 and the heat-insulating plate 33 are aligned vertically. At this time, the heat-insulating rope 14 is close to the electric heating tube 6, and the top plate 202 is away from the electric heating tube 6. The heat-insulating rope 14 separates the top plate 202 from the electric heating tube 6, which can effectively protect the top plate 202.

[0078] Example 2:

[0079] This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that, as can be seen, when the heating furnace is closed, the wire trough 10 still connects the inside and outside of the heating furnace, and thus the gas inside the heating furnace will escape through the wire trough 10. In order to reduce the heat loss inside the heating furnace, air-stopping mechanisms are symmetrically arranged at the wire outlets 11 at both ends of the furnace body 1. The air-stopping mechanisms are used to prevent the high-temperature gas inside the heating furnace from flowing out through the wire trough 10.

[0080] The air-stopping mechanism is designed to form an air curtain, covering the area at the line groove 10, thereby blocking the outward flow of high-temperature airflow. For example... Figures 8-12As shown, the air-stopping mechanism includes an upper air-stop plate 15, a lower air-stop plate 16, an air blowing pipe 17, an air receiving pipe 18, and a circulation pipe 19. The upper air-stop plate 15 and the lower air-stop plate 16 are arranged symmetrically, and both the upper air-stop plate 15 and the lower air-stop plate 16 are plates with a cross-section in the shape of "[". The opening positions of the upper air-stop plate 15 and the lower air-stop plate 16 are vertically opposite each other. The upper air-stop plate 15 and the lower air-stop plate 16 have the same length and are longer than the length of the through-hole 11.

[0081] The upper air deflector 15 is fixedly connected to the furnace cover 2, so that when the furnace cover 2 is flipped, the upper air deflector 15 rotates along with it. The lower air deflector 16 is fixedly connected to the furnace body 1, and the lower air deflector 16 and the furnace body 1 remain fixed. After the furnace cover 2 is closed, the ends of the upper air deflector 15 and the lower air deflector 16 abut against each other, and the upper air deflector 15 and the lower air deflector 16 together form a rectangular frame. The wire trough 10 is connected to the inside and outside of the rectangular frame, and the coverage area of ​​the rectangular frame includes multiple wire troughs 10 at one end of the heating furnace. In this way, the gas in the heating furnace can only flow through the wire trough 10 first, and then flow out through the rectangular frame formed by the upper air deflector 15 and the lower air deflector 16; if the rectangular frame is blocked, the outflow path of the high-temperature gas can be blocked.

[0082] Both the blower pipe 17 and the receiver pipe 18 are pipes that are closed at one end. The closure is achieved by threading a cap 20 to the end of the blower pipe 17 and the receiver pipe 18. The cap 20 is a stepped cylindrical shape. After screwing in the cap 20, one end of the blower pipe 17 and the receiver pipe 18 can be closed.

[0083] During installation, the air blower 17 is horizontally positioned inside the upper air stop plate 15 and fits snugly against the top of the upper air stop plate 15. This snug fit is intended to prevent gaps and air leakage. Both ends of the air blower 17 extend beyond the upper air stop plate 15. One end of the air blower 17, after extending beyond the upper air stop plate 15, is threadedly connected to a displacement sleeve 21. The displacement sleeve 21 is a sleeve with internal threads, and its outer wall is prismatic, facilitating the screwing of the displacement sleeve 21. Consequently, the displacement sleeve 21 can move axially along the air blower 17.

[0084] One end of the air duct 17 is also equipped with a pipe support 22. The pipe support 22 is existing technology and includes a pipe clamp and a support rod. The pipe clamp is detachably mounted on the air duct 17 and surrounds the air duct 17. The support rod is mounted on the pipe clamp and is connected and fixed to the side wall of the furnace body 1. Thus, the pipe clamp is fixed to the furnace body 1 through the support rod. Therefore, the function of the pipe support 22 is to support one extension end of the air duct 17.

[0085] A strip-shaped air outlet 171 is provided on the side wall of the air duct 17 located inside the upper wind deflector 15. The length direction of the air outlet 171 is consistent with the axial direction of the upper wind deflector 15. The length of the air outlet 171 is greater than the length of the through-hole 11, and both ends of the air outlet 171 extend to the ends of the upper wind deflector 15. In order to make the airflow ejected through the air outlet 171 more concentrated, air-concentrating plates 23 are symmetrically arranged on both sides of the air outlet 171. The air-concentrating plates 23 are bent plates, including inclined sections and straight sections. The cross-section of the inclined sections of the two air-concentrating plates 23 is an inverted V-shape. The straight sections of the two air-concentrating plates 23 are kept parallel, and the gap between the two straight sections is smaller than the width of the air outlet 171. In this way, the airflow ejected through the air outlet 171 forms a uniform large-area air curtain under the action of the air-concentrating plates 23.

[0086] When installing the air collection pipe 18: the air collection pipe 18 is horizontally set inside the lower air stop plate 16 and is attached to the bottom of the lower air stop plate 16. Both ends of the air collection pipe 18 extend out of the lower air stop plate 16. The length of the air collection pipe 18 is less than the length of the air blowing pipe 17. The air blowing pipe 17 and the air collection pipe 18 are arranged in parallel vertically and are also staggered vertically, that is, the air blowing pipe 17 is far away from the heating furnace and the air collection pipe 18 is close to the heating furnace. The closed ends of the air blowing pipe 17 and the air collection pipe 18 are on the same vertical plane.

[0087] A strip-shaped air inlet 181 is provided on the side wall of the air inlet 18 located inside the lower air deflector 16. The width of the air inlet 181 is greater than the distance between the straight sections of the two air concentrators 23, and the length of the air inlet 181 is the same as the length of the air outlet 171. The airflow flows from the air outlet 171 to the air inlet 181, forming an air curtain to block the gas from flowing out of the furnace body 1. Because the air outlet 17 and the air inlet 18 are vertically misaligned, the line connecting the air inlet 181 and the air outlet 171 is an inclined straight line, thus forming an inclined air curtain.

[0088] A filter cartridge 24 is coaxially installed inside the air intake duct 18. The filter cartridge 24 is a cylindrical body made of metal filter mesh, open at one end and closed at the other. The outer diameter of the filter cartridge 24 matches the inner diameter of the air intake duct 18, and the length of the filter cartridge 24 is greater than the length of the lower air stop plate 16. The open end of the filter cartridge 24 is connected and fixed to the plug cap 20 at the closed end of the air intake duct 18. In this way, after unscrewing the plug cap 20, the filter cartridge 24 can be moved out of the air intake duct 18. The airflow enters through the air intake port 181, is filtered by the filter cartridge 24, and then enters the air intake duct 18.

[0089] The circulation duct 19 includes a duct fan 191 and an air supply bend 192. The duct fan 191 is existing technology and can be a commercially available four-inch diagonal flow duct fan 191. This type of fan is commonly used for ventilation in residential rooms. The duct fan 191 has a built-in bracket, and the duct fan 191 is connected and fixed to the furnace body 1 through the bracket.

[0090] The air supply bend 192 is bent into an "[" shape and is connected and fixed to the furnace body 1 via the pipe support 22. The lower end of the air supply bend 192 corresponds to the air collection pipe 18, and the air supply bend 192 and the air collection pipe 18 are connected by the pipe fan 191. Specifically, the pipe fan 191 has round pipe structures at both ends, and the pipe fan 191 is fitted with transition sleeves 25 at both ends. The transition sleeves 25 are stepped round pipes with a tapered transition between the two ends. The large-diameter end of the transition sleeve 25 is fitted and connected to the end of the pipe fan 191, and a rubber gasket is placed between them to prevent gas leakage.

[0091] One of the adapter sleeves 25 on the duct fan 191 has its small diameter end threaded to the open end of the air inlet pipe 18, and the other adapter sleeve 25 on the duct fan 191 has its small diameter end threaded to the lower end of the air supply bend 192. Thus, the position of the adapter sleeve 25 can be moved. By turning the adapter sleeve 25, the air inlet pipe 18 can be connected to the duct fan 191, and the duct fan 191 can also be connected to the air supply bend 192.

[0092] The upper end of the air supply bend 192 corresponds to the air blowing pipe 17. The air supply bend 192 is not connected to the furnace cover 2. There is a gap between the open end of the air blowing pipe 17 and the air supply bend 192, and the two are not directly connected. Specifically, the open end face of the air blowing pipe 17 is beveled, and the upper end face of the air supply bend 192 is also beveled. Since the air blowing pipe 17 and the air supply bend 192 are disconnected, they are connected by a threaded displacement sleeve 21. In addition to the threaded connection between the displacement sleeve 21 and the air blowing pipe 17, the displacement sleeve 21 can also be threaded to the upper end of the air supply bend 192, thereby bridging the gap between the two and realizing the connection between the air blowing pipe 17 and the air supply bend 192. A limit stop ring 26 is provided at the upper end of the air supply bend 192. When the displacement sleeve 21 abuts against the limit stop ring 26, the displacement sleeve 21 is installed in place.

[0093] Thus, the open end of the air intake duct 18, the duct fan 191, the air supply bend 192, the shift sleeve 21, and the open end of the air blowing duct 17 are connected in sequence, and the gas flows through them. The air intake duct 18 and the air blowing duct 17 are connected by the cooperation of the air blowing port 171 and the air intake port 181, forming an airflow circulation system.

[0094] When the air-stopping mechanism is in use: After the furnace cover 2 is closed, the upper ends of the blowing pipe 17 and the air supply bend 192 are aligned. The displacement sleeve 21 is screwed down to bring it close to the upper end of the air supply bend 192 and threadedly connected to the air supply bend 192 until the displacement sleeve 21 is tightly pressed against the limiting ring 26, thus achieving the connection between the blowing pipe 17 and the air supply bend 192. After the heating furnace is started, the pipeline fan 191 is turned on, and the gas flows in the above-mentioned airflow circulation system, mainly forming an inclined air curtain between the blowing port 171 and the air receiving port 181. The air curtain covers the entire longitudinal section of the space enclosed by the upper air stop plate 15 and the lower air stop plate 16, thereby blocking the channel connecting the inside and outside of the heating furnace, reducing the heat loss inside the heating furnace, and achieving a certain heat preservation effect.

[0095] Before opening the furnace cover 2, turn off the duct fan 191, then screw on the displacement sleeve 21 so that it is completely positioned at the end of the air blowing pipe 17, thereby disconnecting the air blowing pipe 17 and the air supply bend 192, allowing the furnace cover 2 to be flipped open. When the furnace cover 2 is opened, the upper air stop plate 15, the air blowing pipe 17, and the displacement sleeve 21 move accordingly, while the other components of the air stop mechanism remain stationary along with the furnace body 1.

[0096] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included within the scope of the present invention.

Claims

1. A diamond wire substrate heating furnace, characterized in that, The furnace includes a furnace body (1) and a furnace cover (2). A heat insulation unit (3) is provided inside the furnace body (1). The heat insulation unit (3) includes a heat insulation base plate (31), a heat insulation side plate (32), and a heat insulation plate (33). The heat insulation side plate (32) is provided around the upper part of the heat insulation base plate (31), and the heat insulation plate (33) is provided in the center of the upper part of the heat insulation base plate (31). The heat insulation side plate (32) surrounds the heat insulation plate (33) on all sides. An electric heating tube (6) is provided on the heat insulation plate (33). The furnace body (1) has wire inlets (11) at both ends for diamond wire substrate to enter and exit the furnace body (1). Corresponding to the wire inlets (11), the heat insulation side plate (32) has a wire groove (10) for diamond wire substrate to pass through. The inside and outside of the heating furnace are connected through the wire groove (10). The furnace body (1) is symmetrically provided with windproof mechanisms at the wire inlets (11) at both ends for preventing high-temperature gas in the heating furnace from flowing out through the wire groove (10). The furnace body (1) is hinged with the furnace cover (2), which includes a top cover (201), a top plate (202), and a reinforcing frame (203). The top cover (201) and the top plate (202) are connected and combined to form a closed rectangular space. The reinforcing frame (203) is set in the rectangular space, and the rectangular space is also filled with insulation cotton (204). The insulation cotton (204) is in close contact with the reinforcing frame (203).

2. The diamond wire substrate heating furnace according to claim 1, characterized in that, The furnace body (1) is a rectangular groove structure with an opening at the top. The upper part of the furnace body (1) is bent inward to form a bottom flange (101). The bottom flange (101) is fastened to the insulation side plates (32) on all four sides. The insulation bottom plate (31) and the insulation side plates (32) are both rectangular plates made of mica board.

3. The diamond wire substrate heating furnace according to claim 1, characterized in that, The insulation base plate (31) is arranged horizontally and is attached to the bottom surface of the furnace body (1). The cross-section of the insulation base plate (31) is consistent with the shape and size of the bottom surface of the furnace body (1). The insulation side panel (32) is arranged vertically. The insulation side panel (32) includes a long insulation side panel (321) and a short insulation side panel (322). The long insulation side panel (321) is provided on the corresponding two sides of the upper part of the insulation base plate (31). The number of long insulation side panels (321) on each side is multiple arranged in parallel. The short insulation side plates (322) are provided on the other corresponding sides of the upper part of the insulation base plate (31). The number of short insulation side plates (322) on each side is also multiple, arranged in parallel. The upper planes of the long insulation side plate (321) and the short insulation side plate (322) are flush and higher than the upper plane of the heat insulation board (33).

4. The diamond wire substrate heating furnace according to claim 3, characterized in that, The furnace body (1) corresponding to the short insulation side plate (322) has the wire passage (11) provided on its side wall. The wire passage (11) is a rectangular notch. The upper surface of the short insulation side plate (322) is provided with a plurality of equally spaced wire grooves (10), the wire grooves (10) are U-shaped grooves, the width of the wire grooves (10) is 25-30mm, the bottom of the wire grooves (10) is higher than the upper surface of the insulation board (33) and the distance above is 50-60mm.

5. The diamond wire substrate heating furnace according to claim 1, characterized in that, The heat insulation board (33) is a rectangular plate made of aluminum silicate board. There are at least two heat insulation boards (33) stacked on top of each other. The bottom heat insulation board (33) is attached to the heat insulation base plate (31), and the top heat insulation board (33) has multiple long grooves (7) on its upper surface.

6. The diamond wire substrate heating furnace according to claim 5, characterized in that, The electric heating tube (6) is arranged in a continuous bend along the long groove (7). Both ends of the electric heating tube (6) pass through the insulation side plate (32) on either side and extend out of the furnace body (1). The uppermost heat insulation plate (33) also has a thermocouple (9) embedded on its upper surface for monitoring temperature. The thermocouple (9) passes through the insulation side plate (32) on either side and extends out of the furnace body (1).

7. The diamond wire substrate heating furnace according to claim 1, characterized in that, The furnace body (1) and the furnace cover (2) are provided with hinges (41) at one end to achieve hinged connection, and the furnace body (1) is provided with a support (42) at one end to support the furnace cover (2) after it is flipped open. The furnace body (1) and the furnace cover (2) are provided with a buckle (43) at the other end to achieve locking, and the furnace cover (2) is also provided with a handle (44) at the other end.

8. The diamond wire substrate heating furnace according to claim 2, characterized in that, The top cover (201) is a rectangular groove structure with an opening at the bottom. The bottom of the top cover (201) is bent inward to form a top flange (201A). The top plate (202) is connected and fixed to the top flange (201A) around its perimeter. The top flange (201A) and the bottom flange (101) are vertically aligned. The top flange (201A) is symmetrically provided with sealing strips (5) on both sides. Each sealing strip (5) is bent into the shape of "[". The sealing strip (5) is a sheet made of ceramic fiber pad. After the furnace cover (2) is closed, the sealing strip (5) is tightly pressed against the bottom flange (101).

9. The diamond wire substrate heating furnace according to claim 1, characterized in that, The reinforcing frame (203) is a three-dimensional grid frame welded from square tubes; the top plate (202) is recessed in a rectangular shape, with the recessed direction of the top plate (202) facing the rectangular space, and the top plate (202) is provided with outward flanges (12) around its perimeter, and the top plate (202) is connected and fixed to the top cover (201) through the outward flanges (12); The top plate (202) has a rectangular recess with several limiting rods (13) arranged in a rectangular array. The limiting rods (13) are inverted T-shaped rods. A heat insulation rope (14) is arranged between the limiting rods (13) and the heat insulation rope (14) corresponds to the heat insulation plate (33).

10. The diamond wire substrate heating furnace according to claim 1, characterized in that, The wind-stopping mechanism includes an upper wind-stopping plate (15), a lower wind-stopping plate (16), a blowing pipe (17), a receiving pipe (18), and a circulation pipe (19). The upper wind-stopping plate (15) and the lower wind-stopping plate (16) are arranged symmetrically on the top and bottom, and both are plates with a cross-section in the shape of "[". The upper wind-stopping plate (15) is connected and fixed to the furnace cover (2), and the lower wind-stopping plate (16) is connected and fixed to the furnace body (1). After the furnace cover (2) is closed, the upper wind-stopping plate (15) and the lower wind-stopping plate (16) form a rectangular frame. The wire groove (10) is connected to the inside and outside of the rectangular frame. Both the blower pipe (17) and the receiver pipe (18) are pipes closed at one end. The blower pipe (17) is horizontally installed inside the upper wind deflector plate (15) and fits against the top of the upper wind deflector plate (15). One end of the blower pipe (17) extends out of the upper wind deflector plate (15) and is threadedly connected to a displacement sleeve (21). A strip-shaped air outlet (171) is opened on the side wall of the blower pipe (17) located inside the upper wind deflector plate (15). The air collection pipe (18) is horizontally arranged inside the lower wind deflector (16) and is attached to the bottom of the lower wind deflector (16). A strip-shaped air collection port (181) is opened on the side wall of the air collection pipe (18) located inside the lower wind deflector (16). The airflow flows from the air outlet (171) to the air collection port (181) to form an air curtain to block the gas from flowing out of the furnace body (1). The circulation pipeline (19) includes a pipeline fan (191) and an air supply bend (192). The pipeline fan (191) and the air supply bend (192) are both connected and fixed to the furnace body (1). The open end of the air collection pipe (18), the pipeline fan (191), the air supply bend (192), the shift sleeve (21), and the open end of the blowing pipe (17) are connected in sequence. The open end of the blowing pipe (17) is spaced from the air supply bend (192) and is connected to it by the shift sleeve (21) threadedly.

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