Sintering furnace for preparing low-dielectric ceramic

Abstract

The invention discloses a sintering furnace for preparing low-dielectric ceramic, and relates to the technical field of ceramic preparation. The sintering furnace comprises a sintering furnace body, a separation cage, a rotary switching mechanism and a collection box, the sintering furnace body comprises an outer furnace body and an inner furnace body, and the inner furnace body is fixedly installed in the outer furnace body. The separation cage is pushed into the inner furnace body, so that the low-dielectric ceramic is located in a cage cover of the separation cage, and in the glue discharging stage of low-dielectric ceramic sintering, the separation rotating plates are rotated, so that the separation rotating plates in the outer ring are converted into the mutually-attached sealing state from the interval state pointing to the axis, and the low-dielectric ceramic sintering is achieved. When gas and solid waste are generated during glue discharging of the low-dielectric ceramics, solid dust and particles fall onto the surfaces of the partition rotating plates which are tightly arranged, the gas drives powder on the partition rotating plates and powder on the low-dielectric ceramics to be discharged out of the furnace, and the situation that the powder falls onto a heating part in the inner furnace body is avoided; and the phenomena of oxidation, corrosion, non-uniform temperature distribution and the like of a heating part are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic preparation, and in particular to a sintering furnace for preparing low-dielectric ceramics. Background Art

[0002] Low dielectric ceramics are a type of microwave dielectric ceramics. They have a lower dielectric constant in the microwave frequency range, which makes them play an important role in high-frequency communications, such as millimeter wave applications in 5G technology. Low dielectric ceramics can reduce signal transmission delays, increase signal transmission speeds, and help achieve miniaturization and integration of electronic devices.

[0003] When preparing low dielectric ceramics, a sintering furnace is required to sinter them. During the sintering process, a debinding step is required to remove the organic binder in the green ceramic to ensure the quality and performance of the ceramic substrate after sintering. The debinding process needs to maintain the temperature within a certain range. The organic binder in the green ceramic begins to decompose and volatilize. A certain insulation time is maintained in this area to ensure that the organic matter is completely removed. After the debinding is completed, the temperature continues to rise to sinter and solidify the ceramic.

[0004] Ceramic debinding will produce gaseous and solid debinding waste. During the debinding process, airflow is used to discharge and collect the waste in the sintering furnace. Since the powdered waste is blown by the airflow, the powder floats around in the furnace and is easy to adhere to the inner wall of the furnace body and the surface of the heating element. It is in the leeward side of the airflow and is difficult to be blown out of the furnace by the airflow. It stays inside the furnace body. With the long-term operation of the sintering furnace, the powder will cause oxidation and corrosion of the heating element, and cause uneven temperature distribution of the heating element. Local overheating leads to material fatigue and embrittlement, causing damage to the heating element. In addition, a large amount of powder waste adheres to the furnace, increasing the intensity of the staff's cleaning work. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a sintering furnace for preparing low dielectric ceramics to solve the problem that the debinding powder is easy to adhere to the surface of the heating element in the furnace, causing damage to the surface.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical scheme: a sintering furnace for preparing low dielectric ceramics, comprising a sintering furnace body, a separation cage, a rotating switching mechanism and a collecting box, wherein the sintering furnace body comprises an outer furnace body and an inner furnace body, and the inner furnace body is fixedly installed inside the outer furnace body; The partition cage is slidably installed inside the inner furnace body, and the partition cage is composed of an outer ring and a partition rotating plate. The rear end of the partition cage is in contact with the rear inner wall of the inner furnace body. There are multiple groups of partition rotating plates, which are arranged in a circular array inside the outer ring. A limited rotation mechanism is arranged inside the sintering furnace body, and the limited rotation mechanism is fitted with the front and rear sides and the upper and lower sides of the separation cage to limit the movement of the separation cage in the inner furnace body; The rotary switching mechanism is arranged at the rear side of the inner furnace body, the air inlet end of the rotary switching mechanism is fixedly installed at the air outlet at the rear side of the inner furnace body, and the air outlet end of the rotary switching mechanism is rotatably connected with the air inlet end thereof; The surface of the rotary switching mechanism is provided with temporary filters, and the number of the temporary filters is two groups. The two groups of temporary filters are centrally symmetrically arranged on the surface of the air outlet end of the rotary switching mechanism. A fan is fixedly connected to the rear side of the air outlet end of the rotary switching mechanism, and the air delivery end of the temporary filter is connected to the front and rear ends of the fan; The collecting box is placed on the rear side of the sintering furnace body, and the discharge end of the temporary filter is connected to the top of the collecting box.

[0007] The sintering furnace body also includes a furnace door, a slide rail and a heating ring. The furnace door is hingedly installed on the front side of the outer furnace body, and the slide rail is fixedly installed on the rear inner wall of the inner furnace body. The inner wall of the inner furnace body is provided with a heating ring. The number of the heating rings is multiple groups and they are arranged at equal distances. The rear inner wall of the inner furnace body is provided with an inclined surface.

[0008] The outer ring includes a first rotating ring, a second rotating ring and a push ring, the separating rotating plate includes a partition and a gear, the partition is made of graphite material, a rotating shaft is fixedly installed inside the partition, the front end of the rotating shaft is rotatably connected to the first rotating ring, the rear end of the rotating shaft is rotatably connected to the second rotating ring, the front end of the rotating shaft is fixedly installed with a gear, the push ring is slidably sleeved on the surface of the first rotating ring, a tooth groove is opened inside the push ring, and the gear is meshedly connected with the tooth groove of the push ring; The left and right sides of the partition are inclined surfaces, and the upper and lower sides of the partition are arc surfaces. After the adjacent partitions are rotated, the inclined surfaces thereof are closely fitted.

[0009] The limited rotation mechanism includes a handle, a rotating rod, a positioning plug plate, a bracket and a positioning block. The handle is rotatably installed on the front side of the sintering furnace body, the rotating rod is fixedly installed on the rear end of the handle, the positioning plug plates are fixedly installed on the left and right ends of the rotating rod, the bracket is fixedly installed on the upper and lower inner walls of the inner furnace body, and the positioning block is fixedly installed on the rear inner wall of the inner furnace body.

[0010] The rotary switching mechanism includes an inner sleeve, an outer sleeve, a motor and a transmission wheel. The inner sleeve is fixedly installed at the rear air outlet of the inner furnace body. The outer sleeve is rotatably installed at the rear end of the inner sleeve. The outer sleeve passes through the rear side of the outer furnace body. A valve is provided on the surface of the inner sleeve. An L-shaped plate is fixedly installed on the top of the inner sleeve, and a motor is fixedly installed on the bottom of the L-shaped plate. Transmission wheels are fixedly installed on the output end of the motor and the surface of the outer sleeve, and the two sets of transmission wheels are arranged in meshing connection.

[0011] A semicircular opening is provided on the inner wall at the rear side of the inner sleeve, and a baffle is fixedly installed inside the outer sleeve, which divides the interior of the outer sleeve into two left and right cavities. The semicircular opening of the inner sleeve is connected to the right cavity of the outer sleeve.

[0012] The temporary filter element includes a temporary filter box, a first air supply pipe, a second air supply pipe and a feed pipe. The temporary filter box is fixedly installed on the outlet surface of the rotary switching mechanism. A dust filter bag is fixedly installed inside the temporary filter box, and the air inlet of the bag is connected to the rotary switching mechanism. The outlet end of the temporary filter box is fixedly connected to the first air supply pipe and the second air supply pipe, and a valve is provided thereat. The first air supply pipe is connected to the air inlet end of the fan, and the second air supply pipe is connected to the air outlet end of the fan, and valves are provided at both the air inlet and air outlet ends of the fan; The feed pipe is fixedly mounted on the air outlet surface of the rotary switching mechanism, and a valve is provided there. The temporary filter box and the feed pipe are located on the same side of the rotary switching mechanism and are symmetrically arranged on the upper and lower sides thereof. The free end of the feed pipe is connected to the collection box.

[0013] The collection box includes a collection box body, a box door and a dust filter plate assembly. The rear side of the collection box body is hingedly installed with the box door, and the surface of the box door is inlaid with a dust filter plate assembly, which is composed of multiple layers of activated carbon adsorption filter plates.

[0014] An inert gas delivery box, a vacuum pump and an electric control cabinet are arranged on the outside of the sintering furnace body. The top of the inert gas delivery box is connected with a gas delivery pipeline, and the gas delivery pipeline is communicated with the inner furnace body. The inside of the inert gas delivery box is provided with a gas tank, a heating pipe, an air pump and a valve. The top of the vacuum pump is connected with an exhaust pipeline, and the exhaust pipeline is communicated with the inner furnace body. The electric control cabinet is electrically connected to various components of the device.

[0015] The beneficial effects of the present invention are as follows: The present invention pushes the separation cage to the inside of the inner furnace body so that the low dielectric ceramic is covered by the separation cage. In the debinding stage of the low dielectric ceramic sintering, the separation rotating plate is rotated so that the separation rotating plate is converted from a spacing state pointing to the axis center inside the outer ring to a sealing state closely attached to each other. When the low dielectric ceramic debinding generates gas and solid waste, solid dust and particles fall onto the surface of the closely arranged separation rotating plate, and the gas drives the powder thereon and the powder on the low dielectric ceramic to be discharged out of the furnace. The waste is fully cleaned to avoid the situation that the powder falls on the heating component in the inner furnace body, causing oxidation, corrosion, uneven temperature distribution and the like of the heating component, causing material fatigue and embrittlement, making the heating component more easily damaged, and increasing the difficulty of cleaning the inner furnace body. The separation cage in the spacing state enables the temperature to be normally transmitted to the low dielectric ceramic, and will not hinder its temperature rise sintering process. The separation cage in the sealed state enables the low dielectric ceramic in its internal space to have a better thermal insulation effect and be stably in the debinding stage. The present invention limits the rotation switching mechanism through the limit rotation mechanism, so that the separation cage can be freely taken out and put in after the sintering furnace body is opened. Before sintering the low-dielectric ceramic, the separation cage is replaced and cleaned. Compared with cleaning the inside of the inner furnace body, the working efficiency is greatly improved, and at the same time, the situation that the dust and particles inside the inner furnace body are not completely cleaned, resulting in damage to the corresponding components, is avoided, and the service life of the components inside the inner furnace body is guaranteed; The present invention rotates the air outlet end of the rotary switching mechanism on the rear side of the inner furnace body, thereby driving the two groups of temporary filter elements thereon to be replaced alternately. When the dust and particle filtering effect in one group of temporary filter elements decreases, affecting the waste extraction efficiency, the other group of temporary filter elements is rotated to replace the position with the temporary filter elements. Since the temporary filter elements are inverted after the rotation, the powder filtered inside them is poured out and discharged into the interior of the collection box. At the same time, a reverse airflow is input into the temporary filter elements to blow out the dust and particles adhering to the interior and blocking the circulation, and the dust and particles are discharged into the collection box for collection. The waste powder in the inner furnace body is fully cleaned and discharged, and the filtering efficiency of the device is guaranteed to match that of the subsequent device while increasing the amount of waste to be filtered. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle; Figure 2 is a schematic diagram of a three-dimensional structure from a second viewing angle of the present invention; Figure 3 It is a schematic cross-sectional view of the interior of the present invention; Figure 4 It is a schematic diagram of the internal side section of the present invention; Figure 5 It is a schematic diagram of the first partial structure of the present invention; Figure 6 is a second partial cross-sectional schematic diagram of the present invention; Figure 7 yes Figure 6 A magnified schematic diagram of the middle part; Figure 8 is a third partial cross-sectional schematic diagram of the present invention; Fig. 9 It is a fourth partial cross-sectional schematic diagram of the present invention.

[0017] Figure numerals: 1, sintering furnace body; 101, outer furnace body; 102, furnace door; 103, inner furnace body; 104, slide rail; 105, heating ring; 2, partition cage; 201, first rotating ring; 202, second rotating ring; 203, partition; 204, gear; 205, push ring; 3, limited rotation mechanism; 301, handle; 302, rotating rod; 303, positioning plug plate; 304, bracket; 305, positioning block; 4, Rotary switching mechanism; 401, inner sleeve; 402, outer sleeve; 403, motor; 404, transmission wheel; 5, temporary filter element; 501, temporary filter box; 502-a, first gas pipeline; 502-b, second gas pipeline; 503, feed pipe; 6, fan; 7, collection box; 701, collection box body; 702, box door; 703, dust filter plate assembly; 8, inert gas delivery box; 9, vacuum pump; 10, electric control cabinet. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

[0019] Figures 1 to 9 The best embodiment of the present invention is shown below in conjunction with the attached Figures 1 to 9 The present invention is further described.

[0020] A sintering furnace for preparing low dielectric ceramics, comprising a sintering furnace body 1, a separation cage 2, a rotating switching mechanism 4 and a collecting box 7, wherein the sintering furnace body 1 comprises an outer furnace body 101 and an inner furnace body 103, wherein the inner furnace body 103 is fixedly installed inside the outer furnace body 101; the separation cage 2 is slidably installed inside the inner furnace body 103, and the separation cage 2 is composed of an outer ring and a separation rotating plate, and the rear end of the separation cage 2 is in contact with the rear inner wall of the inner furnace body 103, and the number of the separation rotating plates is multiple groups, and they are arranged in a circular array inside the outer ring; a limited rotation mechanism 3 is arranged inside the sintering furnace body 1, and the limited rotation mechanism 3 and the separation cage 2 are connected to each other. The front and rear sides and the upper and lower sides of 2 are fitted together to limit the movement of the partition cage 2 in the inner furnace body 103; the rotary switching mechanism 4 is arranged on the rear side of the inner furnace body 103, and the air inlet end of the rotary switching mechanism 4 is fixedly installed at the air outlet on the rear side of the inner furnace body 103, and the air outlet end of the rotary switching mechanism 4 is rotatably connected with its air inlet end; the surface of the rotary switching mechanism 4 is provided with temporary filter elements 5, and the number of temporary filter elements 5 is two groups, and the two groups of temporary filter elements 5 are centrally symmetrically arranged on the air outlet end surface of the rotary switching mechanism 4, and the air outlet end of the rotary switching mechanism 4 is fixedly connected with a fan 6, and the temporary filter element 5 The air delivery end is connected to the front and rear ends of the fan 6; the collecting box 7 is placed on the rear side of the sintering furnace body 1, and the discharge end of the temporary filter 5 is connected to the top of the collecting box 7; specifically, the low-dielectric ceramic placed inside is sintered by the sintering furnace body 1, and the low-dielectric ceramic in the sintering furnace body 1 is protected by the separation cage 2. During the debinding stage, the low-dielectric ceramic is sealed on all sides to prevent dust and particle waste generated by debinding from adhering to the heating components, and the separation cage 2 is limited and fixed by the limiting rotation mechanism 3 so that it covers the low-dielectric ceramic and controls The partition cage 2 is opened and closed by rotating the rotary switching mechanism 4 to switch the temporary filter element 5 on the air outlet surface of the rotary switching mechanism 4. The temporary filter element 5 with reduced filtering efficiency is rotated and exchanged with the temporary filter element 5 that has exhausted all internal dust and particles. The air flow is driven by the fan 6 to suck out the dust and particles generated by the debinding of low-dielectric ceramics in the sintering furnace body 1. The dust and particles that fall on the partition cage 2 enter the subsequent rotary switching mechanism 4 and the temporary filter element 5 along the rear inner wall of the inner furnace body 103. The filtered dust and particles are discharged by the temporary filter element 5 into the collection box 7 for collection.

[0021] The sintering furnace body 1 also includes a furnace door 102, a slide rail 104 and a heating ring 105. The furnace door 102 is hingedly installed on the front side of the outer furnace body 101, and the slide rail 104 is fixedly installed on the inner wall of the rear side of the inner furnace body 103. The inner wall of the inner furnace body 103 is provided with a heating ring 105. The number of the heating rings 105 is multiple groups, and they are arranged at equal intervals. The inner wall of the rear side of the inner furnace body 103 is provided with an inclined surface; specifically, the furnace door 102 controls the closing and opening of the outer furnace body 101 and the front side of the inner furnace body 103, and the inclined surface of the inner furnace body 103 allows the powder blown on the separation cage 2 to enter the interior of the subsequent mechanism along this place. The material rack with low dielectric ceramics is supported by the slide rail 104 to slide on it, which is convenient for pushing and taking out the low dielectric ceramics. The low dielectric ceramics inside the inner furnace body 103 are heated by the heating ring 105 to carry out the sintering process.

[0022] The outer ring includes a first rotating ring 201, a second rotating ring 202 and a push ring 205, and the partition rotating plate includes a partition 203 and a gear 204. The partition 203 is made of graphite material. A rotating shaft is fixedly installed inside the partition 203. The front end of the rotating shaft is rotatably connected to the first rotating ring 201, and the rear end of the rotating shaft is rotatably connected to the second rotating ring 202. The front end of the rotating shaft is fixedly installed with a gear 204. The push ring 205 is slidably sleeved on the surface of the first rotating ring 201. A tooth groove is opened inside the push ring 205, and the gear 204 is meshed with the tooth groove of the push ring 205. The left and right sides of the partition 203 are inclined surfaces. The partition 20 3 has arc surfaces on its upper and lower sides, and the inclined surfaces of adjacent partitions 203 fit tightly after rotation; specifically, the second rotating ring 202 fits with the inner wall of the rear side of the inner furnace body 103, so that after the partition 203 rotates to form a sealed state, the gas in the inner furnace body 103 can only enter the partition cage 2 from the first rotating ring 201, and the blown powder slides along the surface of the partition 203 and enters the subsequent mechanism, and the push ring 205 is pushed to rotate on the surface of the first rotating ring 201. Through the conduction of the push ring 205 and the gear 204, each group of partitions 203 rotates synchronously with the rotation of the push ring 205, thereby controlling the state switching of the partition cage 2.

[0023] The limited rotation mechanism 3 includes a handle 301, a rotating rod 302, a positioning plug plate 303, a bracket 304 and a positioning block 305. The handle 301 is rotatably installed on the surface of the furnace door 102. The rear end of the handle 301 is fixedly installed with the rotating rod 302. The rotating rod 302 is located at the rear side of the furnace door 102. The left and right ends of the rotating rod 302 are fixedly installed with positioning plug plates 303. The positioning plug plates 303 are arranged in an arc shape. The left and right sides of the push ring 205 are fixedly installed with plug sleeves. The positioning plug plates 303 and the plug sleeves of the push ring 205 are arranged correspondingly. The bracket 304 is fixedly installed on the upper and lower inner walls of the inner furnace body 103. The bracket 304 is arranged in a Y shape, and its top is fixed A limited sliding block is fixedly installed and is arranged corresponding to the pushing ring 205. The positioning block 305 is fixedly installed on the inner wall of the rear side of the inner furnace body 103 and is slidingly plugged with the second rotating ring 202. Specifically, the handle 301 is rotated to drive the rotating rod 302 to rotate, and the rotating rod 302 drives the positioning plug plate 303 inserted into the plug sleeve to rotate accordingly, thereby controlling the rotation of the pushing ring 205. The pushing ring 205 is supported and limited by the bracket 304 to prevent the pushing ring 205 from rotating on its own after the partition cage 2 is placed in the inner furnace body 103. The positioning block 305 is plugged and connected with the second rotating ring 202 to support and limit the rear end of the partition cage 2.

[0024] The rotary switching mechanism 4 comprises an inner sleeve 401, an outer sleeve 402, a motor 403 and a transmission wheel 404. The inner sleeve 401 is fixedly mounted at the rear air outlet of the inner furnace body 103. The outer sleeve 402 is rotatably mounted at the rear end of the inner sleeve 401. The outer sleeve 402 passes through the rear side of the outer furnace body 101. A valve is provided on the surface of the inner sleeve 401. An L-shaped plate is fixedly mounted on the top of the inner sleeve 401, and a motor 403 is fixedly mounted on the bottom of the L-shaped plate. The output end of the motor 403 and the surface of the outer sleeve 402 are both fixedly mounted with a transmission wheel 404, and the two sets of transmission wheels 404 are arranged in meshing connection. Specifically, the transmission wheel 404 is driven to rotate by the motor 403, and the outer sleeve 402 is driven to reciprocate at the rear end of the inner sleeve 401 through the conduction of the transmission wheel 404, so that the components connected to the outer sleeve 402 are controlled to rotate accordingly.

[0025] A semicircular opening is provided on the inner wall of the rear side of the inner sleeve 401, and a baffle is fixedly installed inside the outer sleeve 402, which divides the interior of the outer sleeve 402 into two left and right cavities. The semicircular opening of the inner sleeve 401 is connected with the right cavity of the outer sleeve 402; specifically, the airflow carries the waste into the outer sleeve 402 through the semicircular opening of the inner sleeve 401, and the two groups of cavities of the outer sleeve 402 are connected with the two groups of temporary filter elements 5, so that rotating the outer sleeve 402 can control the waste to enter the corresponding temporary filter element 5 for filtering treatment.

[0026] The temporary filter element 5 includes a temporary filter box 501, a first air supply pipe 502-a, a second air supply pipe 502-b and a feed pipe 503. The temporary filter box 501 is fixedly installed on the surface of the outer sleeve 402. A dust filter bag is fixedly installed inside the temporary filter box 501. The dust filter bag is made of high temperature resistant material, and the air inlet of the bag is connected to the rotating switching mechanism 4. The inner wall of the temporary filter box 501 is provided with a clamp to clamp the bottom end of the bag to unfold it. A sealing door is hingedly installed on one side of the temporary filter box 501. The air outlet end of the temporary filter box 501 is fixedly connected to the first air supply pipe 502-a and the second air supply pipe 502-b, and a valve is provided thereat. The first air supply pipe 502-a is connected to the air inlet end of the fan 6, and the second air supply pipe 502-b is connected to the air outlet end of the fan 6, and the air inlet and outlet of the fan 6 Valves are provided at both ends; the feed pipe 503 is fixedly installed on the surface of the outer sleeve 402, and a valve is provided thereat; the temporary filter box 501 and the feed pipe 503 are located on the same side of the outer sleeve 402, and the two are connected to the same cavity of the outer sleeve 402, and are symmetrically arranged on the upper and lower sides thereof, and the free end of the feed pipe 503 is connected to the collecting box 7; specifically, the powder and flue gas particles carried by the airflow are filtered by the dust filter bag in the temporary filter box 501 to obtain harmless gas, and the harmless gas is transported to the air inlet end of the fan 6 through the first air supply pipe 502-a, and the gas at the air outlet end of the fan 6 is transported to the interior of the temporary filter box 501 to be cleaned through the second air supply pipe 502-b, and the dust and particulate waste discharged from the temporary filter box 501 are transported to the collecting box 7 through the feed pipe 503.

[0027] The collecting box 7 comprises a collecting box body 701, a box door 702 and a dust filter plate assembly 703. The box door 702 is hingedly installed on the rear side of the collecting box body 701. The dust filter plate assembly 703 is inlaid on the surface of the box door 702. The dust filter plate assembly 703 is composed of multiple layers of activated carbon adsorption filter plates. The fan 6 and the rear side of the collecting box 7 are connected to corresponding gas purification equipment; specifically, the dust and particles discharged from the temporary filter element 5 are collected by the collecting box body 701, and the discharged airflow is filtered by the dust filter plate assembly 703 to retain the waste materials in the collecting box body 701.

[0028] An inert gas delivery box 8, a vacuum pump 9 and an electric control cabinet 10 are arranged on the outside of the sintering furnace body 1. The top of the inert gas delivery box 8 is connected with a gas delivery pipeline, and the gas delivery pipeline is communicated with the inner furnace body 103. The interior of the inert gas delivery box 8 is provided with a gas tank, a heating pipe, an air pump and a valve. The top of the vacuum pump 9 is connected with an exhaust pipeline, and the exhaust pipeline is communicated with the inner furnace body 103. The electric control cabinet 10 is electrically connected to each component of the device. Specifically, the gas in the inner furnace body 103 is extracted by the vacuum pump 9, and the inert gas delivery box 8 delivers inert gas to the inner furnace body 103, so that an oxygen-free environment is formed in the inner furnace body 103 to prevent the ceramic material from undergoing oxidation reaction at high temperature and maintain the purity and performance of the material. In the debinding stage, preheating gas is delivered to the slide rail 104 to maintain the temperature while maintaining the circulation of gas. The operation of each component of the device is regulated and set by the electric control cabinet 10.

[0029] In summary: when the present invention is in use, the staff opens the furnace door 102, places the material rack for storing low-dielectric ceramics on the slide rail 104, pushes it into the inner furnace body 103, and places the partition cage 2 into the inner furnace body 103 together, so that the second rotating ring 202 is plugged and fixed with the positioning block 305, and the push ring 205 fits the surface of the bracket 304, closes the furnace door 102, and the limiting rotation mechanism 3 rotates with the furnace door 102, and the positioning plug plate 303 thereon is inserted into the plug sleeve of the push ring 205, and the gas in the inner furnace body 103 is extracted by the vacuum pump 9, and the inert gas delivery box 8 delivers inert gas to fill the inner furnace body 103, so that a stable oxygen-free environment is formed inside the inner furnace body 103, and the heating ring 105 is started to heat up the inner furnace body 103, and the low-dielectric ceramic is started to be sintered. When the temperature rises to the debinding range, the temperature of the inner furnace body 103 is maintained. Maintaining within a certain range, the handle 301 is rotated to drive the positioning plug plate 303 on the rear side of the rotating rod 302 to rotate, and the push ring 205 is controlled to rotate on the surface of the first rotating ring 201. Relying on the conduction between the push ring 205 and the gear 204, each group of partitions 203 is driven to rotate between the first rotating ring 201 and the second rotating ring 202, so that each group of partitions 203 with intervals is switched to a state of mutual contact, and a closed space is formed around the slide rail 104. The airflow can only flow along the front and rear ends of the separation cage 2, and the inert gas delivery box 8 is driven to deliver preheating gas to the inner furnace body 103. At the same time, the valve at the inner sleeve 401 is opened, and the fan 6 is started to drive the gas flow, and the waste generated in the process of low-dielectric ceramic debinding is extracted. Part of the waste is blocked by the partition 203 to prevent the waste from falling into the inner furnace body 103 and covering the surface of the heating ring 105. The waste enters the cavity on one side of the outer sleeve 402 through the semicircular opening of the inner sleeve 401, and the valve at the feed pipe 503 above the cavity is closed. The gas carries the waste into the temporary filter box 501, where it is filtered and separated by the dust filter bag. The dust and particles are retained in the dust filter bag. The valve at the bottom of the temporary filter box 501 controls the temporary filter box 501 to connect with the first air pipe 502-a, and the clean gas enters the air inlet end of the fan 6 through the first air pipe 502-a. The air inlet end valve control of the fan 6 connects the first air pipe 502-a with the fan 6, and the air outlet end valve control of the fan 6 connects the fan 6 with another second air pipe 502-b. The clean gas enters another temporary filter box 501 through the second air pipe 502-b, and the dust filter bag of the temporary filter box 501 is blown back to blow off the dust and particles stuck inside it. The material falls into another group of feeding pipes 503 from the cavity on the other side of the outer sleeve 402, and is collected in the interior of the collecting box 701. After being filtered by the dust filter plate assembly 703, the waste material is retained in the collecting box 701, and the gas is transported to the subsequent equipment for the remaining purification treatment. When the waste material accumulated inside the dust filter bag of a group of temporary filter boxes 501 hinders the gas circulation, the start motor 403 drives the transmission wheel 404 to rotate. Through the conduction of the transmission wheel 404, the outer sleeve 402 rotates at the rear end of the inner sleeve 401, driving the temporary filter element 5 thereon to rotate and switch. After the waste material discharge amount is increased, the filtration efficiency of the waste material is controlled to remain stable. After the filtered gas reversely cleans the rotating temporary filter element 5, the valve at the air outlet end of the fan 6 is switched, so that the gas is discharged from the rear end of the fan 6 and transported to the subsequent equipment for the remaining purification treatment. After the debinding stage is over, the push ring 205 is rotated to separate and expand the fitted partitions 203 to continue the ceramic sintering work. After the ceramic sintering is completed, the partition cage 2 can be taken out for cleaning and replacement, thereby reducing the cleaning work required for the internal components of the inner furnace body 103.

[0030] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A sintering furnace for preparing low dielectric ceramics, characterized in that: It comprises a sintering furnace body (1), a partition cage (2), a rotary switching mechanism (4) and a collecting box (7); the sintering furnace body (1) comprises an outer furnace body (101) and an inner furnace body (103); the inner furnace body (103) is fixedly installed inside the outer furnace body (101); The partition cage (2) is slidably mounted inside the inner furnace body (103), the partition cage (2) is composed of an outer ring and a partition rotating plate, the rear end of the partition cage (2) is in contact with the rear inner wall of the inner furnace body (103), and the partition rotating plates are provided in a plurality of groups and are arranged in a circular array inside the outer ring; A limited rotation mechanism (3) is arranged inside the sintering furnace body (1), and the limited rotation mechanism (3) is in contact with the front and rear sides and the upper and lower sides of the separation cage (2), so as to limit the movement of the separation cage (2) in the inner furnace body (103); The rotary switching mechanism (4) is arranged at the rear side of the inner furnace body (103), the air inlet end of the rotary switching mechanism (4) is fixedly mounted at the air outlet at the rear side of the inner furnace body (103), and the air outlet end of the rotary switching mechanism (4) is rotatably connected to the air inlet end thereof; The surface of the rotary switching mechanism (4) is provided with temporary filter elements (5), the number of the temporary filter elements (5) being two groups, the two groups of temporary filter elements (5) being centrally symmetrically arranged on the surface of the air outlet end of the rotary switching mechanism (4), the rear side of the air outlet end of the rotary switching mechanism (4) being fixedly connected to a fan (6), and the air delivery end of the temporary filter element (5) being connected to the front and rear ends of the fan (6); The collecting box (7) is placed on the rear side of the sintering furnace body (1), and the discharge end of the temporary filter (5) is connected to the top of the collecting box (7).

2. A sintering furnace for preparing low dielectric ceramics according to claim 1, characterized in that: The sintering furnace body (1) further comprises a furnace door (102), a slide rail (104) and a heating ring (105); the furnace door (102) is hingedly mounted on the front side of the outer furnace body (101); the slide rail (104) is fixedly mounted on the rear inner wall of the inner furnace body (103); the inner wall of the inner furnace body (103) is provided with a heating ring (105); the heating rings (105) are provided in multiple groups and are arranged at equal intervals; and the rear inner wall of the inner furnace body (103) is provided with an inclined surface.

3. A sintering furnace for preparing low dielectric ceramics according to claim 1, characterized in that: The outer ring comprises a first rotating ring (201), a second rotating ring (202) and a push ring (205); the partition rotating plate comprises a partition (203) and a gear (204); the partition (203) is made of graphite material; a rotating shaft is fixedly installed inside the partition (203); the front end of the rotating shaft is rotatably connected to the first rotating ring (201); the rear end of the rotating shaft is rotatably connected to the second rotating ring (202); the front end of the rotating shaft is fixedly installed with a gear (204); the push ring (205) is slidably sleeved on the surface of the first rotating ring (201); a tooth groove is provided inside the push ring (205); and the gear (204) and the tooth groove of the push ring (205) are meshingly connected; The left and right sides of the partition (203) are inclined surfaces, and the upper and lower sides of the partition (203) are arc surfaces. After the adjacent partitions (203) are rotated, their inclined surfaces fit tightly together.

4. A sintering furnace for preparing low dielectric ceramics according to claim 1, characterized in that: The position-limiting rotation mechanism (3) comprises a handle (301), a rotating rod (302), a positioning plug plate (303), a bracket (304) and a positioning block (305); the handle (301) is rotatably mounted on the front side of the sintering furnace body (1); the rotating rod (302) is fixedly mounted on the rear end of the handle (301); the positioning plug plates (303) are fixedly mounted on the left and right ends of the rotating rod (302); the bracket (304) is fixedly mounted on the upper and lower inner walls of the inner furnace body (103); and the positioning block (305) is fixedly mounted on the rear inner wall of the inner furnace body (103).

5. The sintering furnace for preparing low dielectric ceramics according to claim 1, characterized in that: The rotary switching mechanism (4) comprises an inner sleeve (401), an outer sleeve (402), a motor (403) and a transmission wheel (404); the inner sleeve (401) is fixedly mounted at the rear air outlet of the inner furnace body (103); the outer sleeve (402) is rotatably mounted at the rear end of the inner sleeve (401); the outer sleeve (402) passes through the rear side of the outer furnace body (101); a valve is provided on the surface of the inner sleeve (401); an L-shaped plate is fixedly mounted on the top of the inner sleeve (401); and the motor (403) is fixedly mounted on the bottom of the L-shaped plate; the transmission wheel (404) is fixedly mounted on the output end of the motor (403) and the surface of the outer sleeve (402); and the two sets of transmission wheels (404) are arranged in meshing connection.

6. A sintering furnace for preparing low dielectric ceramics according to claim 5, characterized in that: A semicircular opening is provided on the inner wall at the rear side of the inner sleeve (401), and a baffle is fixedly installed inside the outer sleeve (402), the baffle divides the interior of the outer sleeve (402) into two left and right cavities, and the semicircular opening of the inner sleeve (401) is connected to the right cavity of the outer sleeve (402).

7. A sintering furnace for preparing low dielectric ceramics according to claim 1, characterized in that: The temporary filter element (5) comprises a temporary filter box (501), a first air supply pipe (502-a), a second air supply pipe (502-b) and a feed pipe (503); the temporary filter box (501) is fixedly mounted on the air outlet surface of the rotary switching mechanism (4); a dust filter bag is fixedly mounted inside the temporary filter box (501), and an air inlet of the bag is connected to the rotary switching mechanism (4); the air outlet of the temporary filter box (501) is fixedly connected to the first air supply pipe (502-a) and the second air supply pipe (502-b), and a valve is provided thereat; the first air supply pipe (502-a) is connected to the air inlet of the fan (6), the second air supply pipe (502-b) is connected to the air outlet of the fan (6), and valves are provided at both the air inlet and air outlet ends of the fan (6); The feed pipe (503) is fixedly mounted on the air outlet surface of the rotary switching mechanism (4), and a valve is provided thereat. The temporary filter box (501) and the feed pipe (503) are located on the same side of the rotary switching mechanism (4) and are symmetrically arranged on the upper and lower sides thereof. The free end of the feed pipe (503) is connected to the collection box (7).

8. The sintering furnace for preparing low dielectric ceramics according to claim 1, characterized in that: The collection box (7) comprises a material collection box body (701), a box door (702) and a dustproof filter plate assembly (703); the box door (702) is hingedly mounted on the rear side of the material collection box body (701); the dustproof filter plate assembly (703) is inlaid and mounted on the surface of the box door (702); the dustproof filter plate assembly (703) is composed of multiple layers of activated carbon adsorption filter plates.

9. The sintering furnace for preparing low dielectric ceramics according to claim 1, characterized in that: An inert gas delivery box (8), a vacuum pump (9) and an electric control cabinet (10) are arranged outside the sintering furnace body (1); a gas delivery pipeline is connected to the top of the inert gas delivery box (8), and the gas delivery pipeline is communicated with the inner furnace body (103); a gas tank, a heating pipe, an air pump and a valve are arranged inside the inert gas delivery box (8); a vacuum pump (9) is connected to the top of the vacuum pump (9), and the vacuum delivery pipeline is communicated with the inner furnace body (103); and the electric control cabinet (10) is electrically connected to various components of the device.

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