CN210533045U - Furnace top structure of wide-hearth high-temperature sintering furnace - Google Patents

Abstract

A furnace top structure of a wide-hearth high-temperature sintering furnace belongs to the technical field of electronic kiln facilities. The wide-hearth high-temperature sintering furnace comprises a furnace body, a hearth is formed in the central position of the furnace body, the furnace top structure comprises a hearth top wall brick, a left heating element abdicating hole brick of a silicon-molybdenum rod and a right heating element abdicating hole brick of the silicon-molybdenum rod, the hearth top wall brick corresponds to the top of the hearth and is distributed at the rear end of the length direction of the hearth from the front end of the length direction of the hearth in a one-by-one state, the surface of one upward side of the hearth top wall brick is flat, a self-reinforcing cavity of the hearth top wall brick is arranged at one downward side, the right side of the left heating element abdicating hole brick of the silicon-molybdenum rod stretches into the hearth, the left side of the right heating element abdicating hole brick of the silicon-molybdenum rod stretches into the hearth, the left side of the hearth top wall brick is supported above the right side of the left heating element abdicating hole brick of the silicon-molybdenum rod. The workload is reduced, and the building difficulty is reduced; the integral stability of the furnace body is guaranteed.

Description

Furnace top structure of wide-hearth high-temperature sintering furnace

Technical Field

The utility model belongs to the technical field of electronic kiln facility, concretely relates to furnace roof structure of wide furnace high temperature sintering stove.

Background

The hearth of the aforementioned sintering furnace is generally of three sizes: the first one is a narrow hearth and is suitable for a single push plate with the side length of less than 220mm, and the hearth cannot be suitable for a large-size push plate due to the relatively small width of the hearth; the second is a wider hearth, also called a large-size single-push-plate hearth, and is suitable for push plates with the side length of 220-; and the third is a wide hearth, which can adapt to double push plates or three push plates with the side length of 220-.

As known in the art, the hearth structure is a key part of the furnace body, whether used for sintering various electronic components or sintering furnaces for sintering various common and special high-end electronic powder materials. This can be verified by the "hearth structure of battery material sintering furnace" recommended by chinese patent CN105783517A and the "hearth heating device of MIN sintering furnace" provided by CN 204934610U.

In the three hearths of the narrow hearth, the wider hearth and the wide hearth, the roof structure of the narrow hearth is relatively simple, and particularly, the roof bricks corresponding to the top of the hearths form a flat-top structure in a traditional flat building mode, so that the use requirement and the requirement for ensuring the stability of the furnace body structure can be met; for a wider hearth, a furnace top brick generally adopts a herringbone top structure, the herringbone top structure is formed by two bricks or bricks at two sides which are spliced and mutually supported, and the top surfaces of the furnace wall bricks are inclined, so the furnace top bricks are necessarily inclined to build on the inclined surfaces, the efficiency is low due to high building difficulty, the building engineering quantity is large, the manufacturing cost is high due to very strict building requirements, and in addition, if the furnace adopts the silicon-molybdenum rods as heating elements, the installation and the arrangement of the silicon-molybdenum rods are correspondingly very difficult. In addition, when the herringbone roof structure is pressed, extrusion force towards two sides is generated, and the furnace body is liable to deform; for a wide hearth, namely a hearth of a sintering furnace corresponding to a double push plate or a triple push plate, an arc vault structure is usually adopted, the construction amount of the structure is large, the stability of the structure of the furnace top is difficult to guarantee, and the structure is not suitable for the sintering high temperature of about 1500-.

As for the overall structure of the hearth, the hearth is built by wall bricks built along the two corresponding sides of the length direction of the furnace body, bottom bricks positioned at the bottom of the furnace body and top bricks positioned at the top of the furnace body.

Further, as known in the art, some electronic materials such as alumina substrates, aluminum nitride substrates, ceramic substrates, etc. have relatively high sintering temperatures of about 1500-.

Still as known in the art, the silicon-molybdenum rod is essentially a molybdenum disilicide electrothermal component, which is a resistance heating component based on molybdenum silicide, and is heated to a high temperature in an oxidizing atmosphere, and a layer of dense quartz glass film formed on the surface of the silicon-molybdenum rod can play a good role in protection, so that the silicon-molybdenum rod is not oxidized any more. Therefore, the silicon-molybdenum rod has the high-temperature oxidation resistance, the maximum temperature can reach 1800 ℃ under the oxidation atmosphere, and the normal applicable temperature is about 1500-.

The use of U-shaped heating elements of silicon-molybdenum rods for the aforementioned wide-hearth and even wide-hearth high-temperature sintering furnaces is preferred and has proven to be an accepted and accepted technique in the industry. Specifically, the U-shaped silicon-molybdenum rod heating elements are respectively arranged on two sides of a hearth of the furnace body at intervals along the length direction of the hearth, and the power of the heating elements of the silicon-molybdenum rods and the interval distance between the front adjacent silicon-molybdenum rods and the rear adjacent silicon-molybdenum rods are determined according to sintering materials and/or process requirements.

Since the heating element of the U-shaped silicon-molybdenum rod is usually arranged in an overhead manner, the overhead manner refers to: the upper end of the silicon-molybdenum rod is positioned on the furnace top brick on the premise of ensuring the replacement, and the lower end of the silicon-molybdenum rod extends downwards to the bottom of the furnace chamber in a longitudinal cantilever state after penetrating through the furnace top structure, so that more severe requirements are provided for the construction or masonry of the furnace top structure and the long-term service life of the furnace top structure. Since, in the event of the roof construction becoming misaligned, deformed, or the like, even slightly, the heating elements of the silicon molybdenum rod are damaged, the thermal insulation should be impaired, and the stability of the furnace body is compromised.

In view of the above technical problem, the applicant has made an advantageous search and has developed the technical solution described below through a non-limited number of computer simulation tests with privacy measures taken.

Disclosure of Invention

The task of the utility model is to provide a help conveniently building by laying bricks or stones furnace's furnace roof and can reduce the engineering volume and reduce and build by laying bricks or stones the degree of difficulty, be favorable to making about the roof brick that corresponds to the furnace top and the silicon molybdenum rod of both sides heating element step down between the hole brick tend to not have the piece cooperation and can embody good thermal-insulated heat preservation nature, be of value to make about the silicon molybdenum rod heating element step down the hole brick to the reliable support of furnace roof wall brick and can ensure the furnace roof structure of the wide furnace high temperature sintering furnace of the stability of structure.

The utility model aims to accomplish the task in this way, a furnace top structure of wide furnace high temperature sintering stove, wide furnace high temperature sintering stove include the furnace body, the central point of this furnace body constitutes has a furnace chamber that link up to the rear end from the length direction's of furnace body front end, furnace top structure include furnace roof brick, the left heating element of silico-molybdenum stick hole brick of stepping down and the right heating element of silico-molybdenum stick hole brick of stepping down, furnace roof brick corresponds to the top of furnace and from the length direction's of furnace front end with one piece of state next to one piece until distribute in the length direction's of furnace rear end, the surface of the one side that this furnace roof brick faced upward is flat, and furnace roof brick one side down constitutes has a furnace chamber roof brick from the reinforcement, the right side of the left heating element hole brick of silico-molybdenum stick step down explores into furnace, the left side of the right heating element of silico-molybdenum stick hole brick also explores into furnace, the left side of the hearth top wall brick is supported above the right side of the silicon-molybdenum rod left heating element abdicating perforated brick, and the right side of the hearth top wall brick is supported above the left side of the silicon-molybdenum rod right heating element abdicating perforated brick.

In a specific embodiment of the present invention, the left lower portion of the chamber ceiling brick is configured to have a chamber ceiling brick left supporting step cavity, and the right lower portion of the chamber ceiling brick is configured to have a chamber ceiling brick right supporting step cavity, the chamber ceiling brick left supporting step cavity cooperating with the left supporting of the silicon-molybdenum rod left heating element abdicating perforated brick, and the chamber ceiling brick right supporting step cavity cooperating with the right supporting of the silicon-molybdenum rod right heating element abdicating perforated brick.

In another specific embodiment of the present invention, a hearth top wall brick left inclined plane is formed on a left side of the hearth top wall brick and on a side surface corresponding to the left side of the hearth top wall brick left supporting step cavity, and a hearth top wall brick right inclined plane is formed on a right side of the hearth top wall brick and on a side surface corresponding to the right side of the hearth top wall brick right supporting step cavity; a left silicon-molybdenum rod heating element abdicating hole brick right inclined plane is formed on the right side of the left silicon-molybdenum rod heating element abdicating hole brick and at the position corresponding to the left inclined plane of the hearth top wall brick, and a right silicon-molybdenum rod heating element abdicating hole brick left inclined plane is formed on the left side of the right silicon-molybdenum rod heating element abdicating hole brick and at the position corresponding to the right inclined plane of the hearth top wall brick; the left inclined plane of the hearth top wall brick and the right inclined plane of the silicon-molybdenum rod left heating element abdicating perforated brick are opposite in inclination direction and matched with each other, and the right inclined plane of the hearth top wall brick and the right inclined plane of the silicon-molybdenum rod right heating element abdicating perforated brick are opposite in inclination direction and matched with each other.

In another specific embodiment of the present invention, the cross-sectional shape of the self-reinforcing cavity of the furnace roof brick is a herringbone shape.

In another specific embodiment of the present invention, a furnace ceiling brick thermocouple abdicating hole is formed on the furnace ceiling brick from the upper surface to the lower surface of the furnace ceiling brick.

In yet another specific embodiment of the present invention, a silicon-molybdenum rod left heating element abdicating through hole running from the upper surface to the lower surface of the silicon-molybdenum rod left heating element abdicating hole brick is formed on the silicon-molybdenum rod left heating element abdicating hole brick; and the silicon-molybdenum rod right heating element abdicating through hole which runs through the silicon-molybdenum rod right heating element abdicating hole brick from the upper surface to the lower surface of the silicon-molybdenum rod right heating element abdicating hole brick is formed in the silicon-molybdenum rod right heating element abdicating hole brick.

In a more specific embodiment of the present invention, the furnace top wall brick thermocouple abdicating hole is a circular hole or an elliptical hole.

In yet another specific embodiment of the present invention, the left heating element abdicating through hole and the right heating element abdicating through hole of the silicon-molybdenum rod are dumbbell-shaped.

In a still more specific embodiment of the present invention, a furnace wall brick left supporting building and matching cavity is formed on the left side of the lower surface of the silicon-molybdenum rod left heating element abdicating hole brick; and a furnace wall brick right supporting building cavity is formed on the right side of the lower surface of the silicon-molybdenum rod right heating element abdication hole brick.

In yet another specific embodiment of the present invention, the depth of the cavity is one fifth of the thickness of the hole brick and the hole brick are stepped down by the left heating element and the right heating element respectively, and the thickness of the hole brick is equal to each other.

The technical scheme provided by the utility model the technical effect lie in: because the two ends of the hearth top wall brick of the structural system of the furnace top structure are respectively supported on the left heating element abdicating hole brick and the right heating element abdicating hole brick of the silicon-molybdenum rod which are inserted into the hearth in opposite states, and the surface of one side of the hearth top wall brick facing upwards is designed into a flat structure, the furnace top of the hearth is convenient to build, the workload is reduced, and the building difficulty is reduced; because the end parts of the two ends of the hearth top wall brick are respectively arranged on the side, facing upwards, of the opposite ends of the left heating element abdicating hole brick and the right heating element abdicating hole brick of the silicon-molybdenum rod in a covering state, and the lower parts of the left side surface and the right side surface of the hearth top wall brick are respectively matched with the inclined surfaces of the opposite sides of the left heating element abdicating hole brick and the right heating element abdicating hole brick of the silicon-molybdenum rod through the left side surface and the right side surface of the hearth top wall brick, the hearth top wall brick and the left heating element abdicating hole brick and the right heating element abdicating hole brick of the silicon-molybdenum; because the left heating element abdicating hole brick and the right heating element abdicating hole brick of the silicon-molybdenum rod play a reliable supporting role for the top wall brick of the hearth, the stability of the whole structure of the furnace body can be ensured.

Drawings

Fig. 1 is a top structure diagram of the wide hearth high-temperature sintering furnace of the utility model.

Fig. 2 is a schematic view of a wide hearth high temperature sintering furnace having the roof structure shown in fig. 1.

Fig. 3 is a detailed structural view of the right heating element and right brick plugging mechanism of the silicon molybdenum rod shown in fig. 2.

Detailed Description

In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position state of fig. 2, and thus, should not be interpreted as a specific limitation to the technical solution provided by the present invention.

Referring to fig. 1 in conjunction with fig. 2, there is shown a furnace body 1 of the structural system of the wide-hearth high-temperature sintering furnace shown in fig. 2, and a hearth 11 penetrating from the front end to the rear end in the longitudinal direction of the furnace body 1 is formed at the center of the furnace body 1.

Please refer to fig. 1, which shows a hearth top wall brick 141, a left silicon-molybdenum rod heating element abdicating hole brick 142 and a right silicon-molybdenum rod heating element abdicating hole brick 143 of the roof structure system, the hearth top wall brick 141 corresponds to the top of the hearth 11 and is distributed at the rear end of the length direction of the hearth 11 from the front end of the length direction of the hearth 11 in a state of one brick by one, the surface of the upward side of the hearth top wall brick 141 is flat, that is, the upper surface of the hearth top wall brick 141 is a plane, the downward side of the hearth top wall brick 141, that is, the side facing the hearth 11, is formed with a hearth top wall brick self-reinforcing cavity 1, the right side of the left silicon-molybdenum rod heating element abdicating hole brick 142 protrudes into the hearth 11, the left side of the right silicon-molybdenum rod heating element abdicating hole brick 143 also protrudes into the hearth 11, the left side of the top wall brick 141 is supported above the right side of the left silicon-molybdenum rod abdicating hole brick 142, while the right side of the furnace ceiling tile 141 is supported above the left side of the aforementioned silicon molybdenum rod right heating element relief hole tile 143.

As shown in fig. 1, a hearth ceiling tile left supporting step chamber 1412 is formed at a lower left portion of the hearth ceiling tile 141, i.e., at a lower left half portion in the thickness direction of the hearth ceiling tile 141, and a hearth ceiling tile right supporting step chamber 1413 is formed at a lower right portion of the hearth ceiling tile 141, i.e., at a lower right half portion in the thickness direction of the hearth ceiling tile 141, the hearth ceiling tile left supporting step chamber 1412 being in supporting engagement with the left side of the silicon-molybdenum-rod left heating element abdicating hole brick 142, and the hearth ceiling tile right supporting step chamber 1413 being in supporting engagement with the right side of the silicon-molybdenum-rod right heating element abdicating hole brick 143.

Continuing with FIG. 1, a hearth top wall brick left chamfer 1414 is formed on the left side of the aforementioned hearth top wall brick 141 and on the left facing side surface corresponding to the aforementioned hearth top wall brick left support step cavity 1412, and a hearth top wall brick right chamfer 1415 is formed on the right side of the hearth top wall brick 141 and on the right facing side surface corresponding to the hearth top wall brick right support step cavity 1413; a left silicon-molybdenum-rod heating-element-abdicating-hole-brick right slope 1421 is formed on the right side of the left silicon-molybdenum-rod heating-element-abdicating-hole brick 142 and at a position corresponding to the furnace-ceiling-brick left slope 1414, and a right silicon-molybdenum-rod heating-element-abdicating-hole-brick left slope 1431 is formed on the left side of the right silicon-molybdenum-rod heating-element-abdicating-hole brick 143 and at a position corresponding to the furnace-ceiling-brick right slope 1415; the furnace ceiling tile left chamfer 1414 and the silicon molybdenum rod left heating element setback 1421 are opposite in slope and mate with each other, while the furnace ceiling tile right chamfer 1415 and the silicon molybdenum rod right heating element setback 1431 are opposite in slope and mate with each other.

Continuing with FIG. 1 and with reference to FIG. 2, in this embodiment, the cross-sectional shape of the self-reinforcing cavity 1411 of the aforementioned furnace roof wall brick is in the shape of a chevron.

In this embodiment, the hearth top wall brick 141 is provided with a hearth top wall brick thermocouple relief hole 1416 which penetrates from the upper surface to the lower surface of the hearth top wall brick 141; a silicon-molybdenum rod left heating element abdicating through hole 1422 which penetrates from the upper surface to the lower surface of the silicon-molybdenum rod left heating element abdicating hole brick 142 is formed in the silicon-molybdenum rod left heating element abdicating hole brick 142; the silicon-molybdenum rod right heating element abdicating hole 1432 is formed on the silicon-molybdenum rod right heating element abdicating hole brick 143 and penetrates from the upper surface to the lower surface of the silicon-molybdenum rod right heating element abdicating hole brick 143.

In this embodiment, the thermocouple relief holes 1416 of the furnace roof wall bricks are round holes but may be oval holes as will be mentioned below.

In this embodiment, the left heating element abdicating through hole 1422 and the right heating element abdicating through hole 1432 are dumbbell-shaped.

Preferably, a furnace wall brick left supporting brick assembly cavity 1423 is formed on the left side of the lower surface of the silicon-molybdenum rod left heating element abdication hole brick 142; a furnace wall brick right supporting block 1433 is formed at the right side of the lower surface of the silicon molybdenum rod right heating element abdication hole brick 143. The depth of the furnace wall brick left supporting assembly cavity 1423 and the furnace wall brick right supporting assembly cavity 1433 is one fifth of the thickness of the silicon-molybdenum rod left heating element abdicating hole brick 142 and the silicon-molybdenum rod right heating element abdicating hole brick 143, respectively, and the thicknesses of the silicon-molybdenum rod left and right heating element abdicating hole bricks 142, 143 are equal to each other.

Referring to fig. 2, there is shown a furnace body 1 which belongs to the field of tunnel kilns and which can be as long as tens of meters or even more and is as mentioned above, the furnace body 1 being formed at a central position thereof with a hearth 11 which penetrates from a front end to a rear end in a longitudinal direction of an outer shell (i.e., a shell) of the furnace body 1 and is as mentioned above, specifically, the hearth 11 is surrounded by hearth bricks 12 horizontally built along a bottom of an inner side in the longitudinal direction of the furnace body 1, furnace wall bricks 13 longitudinally built along inner walls of left and right sides in the longitudinal direction of the furnace body 1 on the basis of the aforementioned hearth bricks 12, and crown bricks 14 horizontally built along a top in the longitudinal direction of the furnace body 1 on the basis of the aforementioned furnace wall bricks 13; among the aforementioned ceiling bricks 14, the ceiling brick located at the bottom and corresponding to the top of the aforementioned furnace 11 is constituted as the aforementioned furnace ceiling brick 141, the ceiling brick corresponding to the left side of the furnace ceiling brick 141 is constituted as the aforementioned silicon-molybdenum-rod left heating-element escape hole brick 142, and the ceiling brick corresponding to the right side of the furnace ceiling brick 141 is constituted as the aforementioned silicon-molybdenum-rod right heating-element escape hole brick 143. As can be seen in connection with fig. 1, the upper portion of the furnace wall brick 13 on the left side, which corresponds to the furnace wall brick left support building cavity 1423 of the silicon-molybdenum rod left heating element abdication perforated brick 142, is built with the furnace wall brick left support building cavity 1423; the upper portion of the furnace wall brick 13 on the right side, which corresponds to the furnace wall brick right support assembly cavity 1433 of the silicon-molybdenum rod right heating element abduction aperture brick 143, is assembled with the furnace wall brick right support assembly cavity 1433.

Please refer to fig. 2, the left heating elements 2 of the silicon-molybdenum rods are arranged at intervals in the left length direction of the hearth 11 and at the positions corresponding to the left heating element abdicating hole bricks 142, the right heating elements 3 of the silicon-molybdenum rods are arranged at intervals in the right length direction of the hearth 11 and at the positions corresponding to the right heating element abdicating hole bricks 143, the left brick plugging mechanisms 4 equal to the number of the left heating elements 2 of the silicon-molybdenum rods are built in the top brick 14 and at the positions corresponding to the upper parts of the left heating element abdicating hole bricks 142 of the silicon-molybdenum rods, the right brick plugging mechanisms 5 equal to the number of the right heating elements 3 of the silicon-molybdenum rods are built in the top brick 14 and at the positions corresponding to the upper parts of the right heating element abdicating hole bricks 143 of the silicon-molybdenum rods, the left extraction release bricks 6 which are inserted and pulled into and matched with the upper parts of the left brick plugging mechanisms 4 are arranged at the top of the furnace body 1 and at the positions corresponding to the left brick plugging mechanisms 4, and a right extraction release brick 7 which is in plug-pull fit with the upper part of the right brick plugging mechanism 5 is arranged at the top of the furnace body 1 and at a position corresponding to the right brick plugging mechanism 5, the lower end of the silicon-molybdenum rod left heating element 2 passes through the left brick plugging mechanism 4 and extends to the bottom of the hearth 11 in a longitudinal cantilever state, the upper end of the silicon-molybdenum rod left heating element 2 passes through the left extraction release brick 6 from bottom to top and protrudes out of the upper surface of the left extraction release brick 6, the lower end of the silicon-molybdenum rod right heating element 3 passes through the right brick plugging mechanism 5 and extends to the bottom of the hearth 11 in a longitudinal cantilever state, and the upper end of the silicon-molybdenum rod right heating element 3 passes through the right extraction release brick 7 from bottom to top and protrudes out of the upper surface of the right extraction release brick 7.

From the above description and shown in connection with fig. 2, it can be determined that: the number of the left and right extractor release bricks 6 and 7 is equal to the number of the left and right stopper mechanisms 4 and 5, respectively. Specifically, the first number of the left heating elements 2, the left brick plugging mechanisms 4 and the left extraction and release bricks 6 of the silicon-molybdenum rods is equal; the second number of the right heating elements 3, the right stopper mechanisms 5 and the right extractor release bricks 7 of the silicon-molybdenum bars is equal, and the first and second number are equal to each other.

Continuing to refer to fig. 2, a silicon-molybdenum rod left heating element lower end probing groove 121 is formed in the position corresponding to the silicon-molybdenum rod left heating element 2 on the bottom brick 12 of the hearth 11, and a silicon-molybdenum rod right heating element lower end probing groove 122 is formed in the position corresponding to the silicon-molybdenum rod right heating element 3; the lower end of the left heating element 2 extends in a longitudinal cantilever state towards the bottom of the furnace chamber 11 after sequentially passing through the left brick-plugging mechanism 4 and the left heating element abdicating hole brick 142 of the silicon-molybdenum rod and then extends into the lower end probing groove 121 of the left heating element of the silicon-molybdenum rod, and the lower end of the right heating element 3 extends in a longitudinal cantilever state towards the bottom of the furnace chamber 11 after sequentially passing through the right brick-plugging mechanism 5 and the right heating element abdicating hole brick 143 of the silicon-molybdenum rod and then probes into the lower end probing groove 122 of the right heating element of the silicon-molybdenum rod.

Continuing to refer to fig. 2, the left plug brick mechanism 4 comprises a left lower plug brick 41, a left middle plug brick 42 and a left upper plug brick 43, the left lower plug brick 41 is supported on the upward side of the left heating element abdicating hole brick 142 of the silicon-molybdenum rod, the left middle plug brick 42 is stacked on the upper part of the left lower plug brick 41, the left upper plug brick 43 is stacked on the upper part of the left middle plug brick 42, the left extraction release brick 6 is in plug-pull fit with the top of the left upper plug brick 43 at the position of the top of the furnace body 1, the left lower plug brick 41, the left middle plug brick 42 and the left upper plug brick 43 are fixed by the furnace top brick 14, the lower end of the left heating element 2 of the silicon-molybdenum rod is stretched towards the bottom of the furnace 11 in a longitudinal cantilever state after passing through the left upper plug brick 43, the left middle plug brick 42, the left lower plug brick 41 and the left heating element abdicating hole brick 142 of the silicon-molybdenum rod in sequence and is inserted into the lower end exploring groove 121 of the left heating element of the, the upper end of the left heating element 2 of the silicon-molybdenum rod penetrates through the left extraction release brick 6 from the lower part of the left extraction release brick 6, extends out of the upper surface of the left extraction release brick 6 and is fixed with a left connection cable connecting clamp 61 of the silicon-molybdenum rod power supply; the upper left side of the furnace ceiling brick 141 is fitted to the right lower side of the left lower plug brick 41.

A left lower plug-brick silicomolybdenum rod left heating element abdicating hole 411 penetrating from the top to the bottom of the left lower plug brick 41 is opened on the left lower plug brick 41 and at a position corresponding to the silicon molybdenum rod left heating element abdicating through hole 1422, a left middle plug-brick silicomolybdenum rod left heating element abdicating hole 421 penetrating from the top to the bottom of the left middle plug brick 42 is opened on the left middle plug brick 42 and at a position corresponding to the left lower plug-brick silicomolybdenum rod left heating element abdicating hole 411, a left upper plug-brick silicomolybdenum rod left heating element abdicating hole 431 penetrating from the top to the bottom of the left upper plug brick 43 is opened on the left upper plug brick 43 and at a position corresponding to the left middle plug-brick silicomolybdenum rod left heating element abdicating hole 421, a left upper plug-brick silicomolybdenum rod left heating element abdicating hole 62 penetrating from the top to the bottom of the left upper plug brick 43 is opened on the left extraction release brick 6 and at a position corresponding to both ends of the left upper plug-brick silicomolybdenum rod left heating element abdicating hole 431, it can be seen that there is a pair of left heating element relief holes 62 for the left extraction release brick silicon molybdenum rods, and a pair of corresponding left connecting cable connecting clamps 61 for the silicon molybdenum rod power supply. Wherein, the left heating element abdicating through hole 1422 of the silicon-molybdenum rod, the left heating element abdicating hole 411 of the left lower plug brick silicon-molybdenum rod, the left heating element abdicating hole 421 of the left middle plug brick silicon-molybdenum rod and the left heating element abdicating hole 431 of the left upper plug brick silicon-molybdenum rod are the same in shape and are all dumbbell-shaped holes, the left heating element abdicating hole 62 of the left extraction release brick silicon-molybdenum rod is a circular hole, the lower end of the left heating element 2 of the silicon-molybdenum rod sequentially passes through the left heating element abdicating hole 431 of the left upper plug brick silicon-molybdenum rod, the left heating element abdicating hole 421 of the left middle plug brick silicon-molybdenum rod, the left heating element abdicating hole 411 of the left lower plug brick silicon-molybdenum rod and the left heating element abdicating through hole 1422 of the left upper plug brick silicon-molybdenum rod, and extends towards the bottom of the furnace 11 in a longitudinal cantilever state and extends into the probing groove 121 at the lower end of the left heating element abdicating hole corresponding to the left heating element abdicating hole 62 of the left extraction release brick silicon-molybdenum rod The lower side of the extraction release brick 6 passes through the left extraction release brick 6 upward and protrudes out of the upper surface of the left extraction release brick 6, and the bottom surface of the aforementioned silicon molybdenum rod power left connection cable connection clip 61 fixed to the upper end of the aforementioned silicon molybdenum rod left heating element 2 is in contact with the top surface of the left extraction release brick 6.

Continuing to refer to fig. 2, a left lower brick-setting step cavity 412 is formed in the middle of the left lower brick 41 in the height direction and around the periphery of the left lower brick 41, the upper end, i.e., the upper portion, of the left lower brick 41 is formed as a left lower brick-setting boss 413, a left lower brick-hearth top-wall brick-setting cavity 414 is formed in the lower right portion of the left lower brick 41, the furnace top brick 14 is matched with the left lower brick-setting step cavity 412 in a building manner, that is, the furnace top brick 14 sets and fixes the left lower brick 41 at a position corresponding to the left lower brick-setting step cavity 412 in a building manner, and the left side surface of the upper portion of the furnace hearth top-wall brick 141 is matched with, i.e., matched with the left lower brick-hearth top-wall brick-setting cavity 414 in a building manner; a left middle brick-plugging cavity 422 is formed at the bottom of the left middle brick-plugging 42 and at a position corresponding to the left lower brick-plugging boss 413, the upper part of the left lower brick-plugging boss 413 extends into the left middle brick-plugging cavity 422, a left middle brick-plugging chamber 423 is formed at the middle part of the left middle brick-plugging 42, the furnace top brick 14 is in embedding fit with the left middle brick-plugging chamber 423, and a left middle brick-plugging boss 424 is formed at the upper part of the left middle brick-plugging 42; a left upper brick cavity 432 is formed at the bottom of the left upper brick 43 and at a position corresponding to the left middle brick boss 424, and the upper part of the left middle brick boss 424 is inserted into the left upper brick cavity 432; a left extraction release brick plug 63, also called a left extraction release brick tenon (the same applies hereinafter), is formed on the downward side of the left extraction release brick 6 for being inserted into and pulled out of the upper part of the left upper plug brick 43, and the left extraction release brick plug 63 is inserted into and pulled out of the middle part of the left heating element abdicating hole 431 of the left upper plug brick.

Referring to fig. 3 in combination with fig. 2, the right brick mechanism 5 includes a right lower brick 51, a right middle brick 52 and a right upper brick 53, the right lower brick 51 is supported on the upward side of the silicon-molybdenum rod right heating element relief hole brick 143, the right middle brick 52 is stacked on the upper portion of the right lower brick 51, the right upper brick 53 is stacked on the upper portion of the right middle brick 52, the right extraction release brick 7 is in insertion and extraction fit with the top of the right upper brick 53 at the position of the top of the furnace body 1, the right lower brick 51, the right middle brick 52 and the right upper brick 53 are fixed by the furnace top brick 14, the lower end of the silicon-molybdenum rod right heating element 3 extends toward the bottom of the furnace 11 in a longitudinal cantilever state after passing through the right upper brick 53, the right middle brick 52, the right lower brick 51 and the silicon-molybdenum rod right heating element relief hole brick 143 in sequence and enters the silicon-molybdenum rod right heating element relief groove 122, the upper end of the silicon-molybdenum rod right heating element 3 penetrates through the right extraction release brick 7 from the lower direction of the right extraction release brick 7, extends out of the upper surface of the right extraction release brick 7 and is fixed with a silicon-molybdenum rod power supply right connecting cable connecting clamp 71; the right upper portion of the aforementioned furnace ceiling brick 141 is fitted with the lower left portion of the aforementioned right lower plug brick 51.

Continuing with FIG. 2, a right lower plug brick Si-Mo rod right heating element relief hole 511 penetrating from the top to the bottom of the right lower plug brick 51 is opened on the right lower plug brick 51 and at a position corresponding to the aforementioned Si-Mo rod right heating element relief through hole 1432, a right middle plug brick Si-Mo rod right heating element relief hole 521 penetrating from the top to the bottom of the right middle plug brick 52 is opened on the right middle plug brick 52 and at a position corresponding to the right lower plug brick Si-Mo rod right heating element relief hole 511, a right upper plug brick Si-Mo rod right heating element relief hole 531 penetrating from the top to the bottom of the right upper plug brick 53 is opened on the right upper plug brick 53 and at a position corresponding to the right middle plug brick Si-Mo rod right heating element relief hole 521, a right Si-Mo rod extraction relief hole 72 is opened on the right extraction release brick 7 and at each of the positions corresponding to both ends of the right upper plug brick Si-Mo rod right heating element relief hole 531, it can be seen that there is a pair of right heating element relief holes 72 for the right extraction release brick silicon molybdenum rods, and there is a pair of corresponding right connecting cable connecting clamps 71 for the silicon molybdenum rod power supply. Wherein, the aforementioned silicon-molybdenum rod right heating element abdicating through hole 1432, right lower plug brick silicon-molybdenum rod right heating element abdicating hole 511, right middle plug brick silicon-molybdenum rod right heating element abdicating hole 521 and right upper plug brick silicon-molybdenum rod right heating element abdicating hole 531 are the same in shape and are all dumbbell-shaped holes, the aforementioned right extraction release brick silicon-molybdenum rod right heating element abdicating hole 72 is a circular hole, the lower end of the aforementioned silicon-molybdenum rod right heating element 3 sequentially passes through the aforementioned right upper plug brick silicon-molybdenum rod right heating element abdicating hole 531, right middle plug brick silicon-molybdenum rod right heating element abdicating hole 521, right lower plug brick silicon-molybdenum rod right heating element abdicating hole 511 and silicon-molybdenum rod right heating element abdicating through hole 1432 from top to bottom in a longitudinal cantilever state and extends toward the bottom of the aforementioned hearth 11 and probes into the aforementioned silicon-molybdenum rod right heating element lower end probing groove 122, the upper end of the silicon-molybdenum rod right heating element 3 is positioned from the right position corresponding to the aforementioned right extraction release brick silicon-molybdenum rod right heating element abdicating hole 72 The lower side of the extraction release brick 7 passes through the right extraction release brick 7 upward and protrudes out of the upper surface of the right extraction release brick 7, and the bottom surface of the aforementioned silicon molybdenum rod power right connection cable connection clip 71 fixed to the upper end of the aforementioned silicon molybdenum rod right heating element 3 is in contact with the top surface of the right extraction release brick 7.

Continuing to refer to fig. 3 and with reference to fig. 2, a right lower brick-plugged brick-built step cavity 512 is formed in the middle of the right lower brick 51 in the height direction and around the periphery of the right lower brick 51, the upper end, i.e., the upper portion, of the right lower brick 51 is formed as a right lower brick-plugged boss 513, a right lower brick-plugged hearth-wall brick-built cavity 514 is formed in the lower left portion of the right lower brick 51, the furnace roof brick 14 is built and matched with the right lower brick-plugged brick-built step cavity 512, that is, the furnace roof brick 14 builds and fixes the right lower brick 51 at the position corresponding to the right lower brick-plugged brick-built step cavity 512, and the right side surface of the upper portion of the furnace hearth-wall brick 141 is built and matched with, i.e., matched with, the right lower brick-plugged hearth-wall brick-built cavity 514; a right middle brick-plugging cavity 522 is formed at the bottom of the right middle brick-plugging 52 and at a position corresponding to the right lower brick-plugging boss 513, the upper part of the right lower brick-plugging boss 513 protrudes into the right middle brick-plugging cavity 522, a right middle brick-plugging chamber 523 is formed at the middle part of the right middle brick-plugging 52, the furnace roof brick 14 is embedded and matched with the right middle brick-plugging chamber 523, and a right middle brick-plugging boss 524 is formed at the upper part of the right middle brick-plugging 52; a right upper brick pocket 532 is formed at the bottom of the right upper brick 53 and at a position corresponding to the right middle brick boss 524, and the upper portion of the right middle brick boss 524 protrudes into the right upper brick pocket 532; a right extraction release brick plug 73, also called a right extraction release brick tenon (the same applies below), is formed on the downward side of the right extraction release brick 7 for being inserted into and pulled out of the upper part of the right upper plug brick 53, and the right extraction release brick plug 73 is inserted into and pulled out of the middle part of the right upper plug brick silicon-molybdenum rod abdicating hole 531.

The above-mentioned dumbbell-shaped hole is substantially a hole having a dumbbell-shaped cross-sectional shape, and the concept of the dumbbell-shaped cross-sectional shape is that the hole is formed by one circular hole at each of both ends and an elongated hole located between the two circular holes. Taking the right lower plug brick 51 as an example and shown in fig. 3, the right heating element abdicating hole 511 of the right lower plug brick silicon-molybdenum rod is composed of a pair of right lower plug brick circular holes 5111 and a right lower plug brick rectangular long hole 5112, and the right lower plug brick rectangular long hole 5112 is located between the pair of right lower plug brick circular holes 5111. Since the right middle stopper brick silicon molybdenum rod right heating element abdicating hole 521, the right upper stopper brick silicon molybdenum rod right heating element abdicating hole 531, the left lower stopper brick silicon molybdenum rod left heating element abdicating hole 411, the left middle stopper brick silicon molybdenum rod left heating element abdicating hole 421, and the left upper stopper brick silicon molybdenum rod left heating element abdicating hole 431 are the same as the right lower stopper brick silicon molybdenum rod right heating element abdicating hole 511, the description is omitted.

As can be seen from the schematic illustration of fig. 3, one pair of upper ends of the right silicon-molybdenum rod heating element 3 is thicker, which may be referred to as silicon-molybdenum rod cold end 31, and the silicon-molybdenum rod cold end 31 corresponds to the right extraction release brick silicon-molybdenum rod right heating element abdicating hole 72, the right upper plug brick silicon-molybdenum rod right heating element abdicating hole 531, the right middle plug brick silicon-molybdenum rod right heating element abdicating hole 521, the right lower plug brick silicon-molybdenum rod right heating element abdicating hole 511 and the silicon-molybdenum rod right heating element abdicating through hole 1432; the lower end of the right heating element 3 of the silicon-molybdenum rod is relatively thin and is U-shaped, i.e. connected in a U-shape, and the applicant refers to the aforesaid lower end of the right heating element 3 of the silicon-molybdenum rod as the heating end 32 of the silicon-molybdenum rod, which heating end 32 of the silicon-molybdenum rod is located in the furnace 11. The cold end 31 and the hot end 32 of the Si-Mo rod are called because of the difference in material composition. Since the above-mentioned left heating element 2 of the silicon-molybdenum rod is the same as the right heating element 3 of the silicon-molybdenum rod, the applicant does not give further details.

In this embodiment, the left and right lower plugs 41, 51 and the left and right extraction release bricks 6, 7 are made of alumina hollow sphere material, while the middle left and right upper plugs 42, 52 and the left and right upper plugs 43, 53 are made of mullite light-gathering brick, so as to ensure that the left and right extraction release bricks 6, 7 have good rigidity, while the left and right lower plugs 41, 51 can endure high temperature close to the temperature of the furnace 11, and the middle left and right upper plugs 42, 52 and the left and right upper plugs 43, 53 can embody good heat insulation, so that the temperature of the top of the furnace body 1 is greatly reduced, and accordingly, the energy consumption of the furnace is significantly reduced.

As shown in fig. 2, since the temperatures of different areas of the furnace 11 are different, a plurality of furnace temperature zones with different sintering temperatures are separated by the furnace temperature zone separation bricks 111 in the length direction of the furnace 11, and the channel width of the furnace 11 is narrowed at the position corresponding to the furnace temperature zone separation bricks 111; a ceiling brick thermocouple relief hole 144 penetrating from the top of the ceiling brick 14 to the bottom of the ceiling brick 14 is opened in the ceiling brick 14 at a position corresponding to the hearth temperature zone, and a hearth ceiling brick thermocouple relief hole 1416 opened in the hearth ceiling brick 141 corresponds to the ceiling brick thermocouple relief hole 144 and is also communicated with the ceiling brick thermocouple relief hole 144 and the hearth 11. In use, the thermocouple is inserted into the crown block thermocouple relief hole 144 and extends into the firebox 11 through the hearth crown block thermocouple relief hole 1416, and the temperature in the firebox 11 is sensed by the thermocouple.

As shown in fig. 2, a furnace pusher guide 112 is provided at the bottom of the furnace 11 along the longitudinal direction of the furnace 11, and a pusher 8 is provided on the furnace pusher guide 112 in a use state. When electronic components such as the alumina substrate, the aluminum nitride substrate or the ceramic substrate are sintered, the alumina substrate, the aluminum nitride substrate or the ceramic substrate are sequentially stacked on the pushing plate 8, and under the action of a power device (known in the art and not shown in the figure) for driving the pushing plate 8 to move, the pushing plate 8 carries any one of the substrates to be discharged from a feed port of the hearth 11, such as a feed port at the front end of the hearth 11, to a discharge port of the hearth 11, such as a discharge port at the rear end of the hearth 11, so as to complete sintering. If the electronic powder material is to be sintered, the electronic powder material is put into the sagger 9, the sagger 9 carries the electronic powder material and is placed on the push plate 8, the sagger 9 is driven by the push plate 8, and the specific process is the same as the above.

When the silicon-molybdenum rod left heating element 2 is to be replaced, the left extraction release brick 6 is lifted upwards by an operator in a shutdown state and when the furnace temperature is reduced to normal temperature, namely, when the sintering furnace is in a non-sintering state for products, because the upper end of the silicon-molybdenum rod left heating element 2 is fixed with the silicon-molybdenum rod power supply left connecting cable connecting clamp 61, when the left extraction release brick 6 is lifted to the bottom, the left extraction release brick plug 63 is withdrawn from the middle part of the left upper plug brick silicon-molybdenum rod left heating element abduction hole 431 and then the left extraction release brick 6 is lifted upwards, so that the lower end of the silicon-molybdenum rod left heating element 2 is displaced upwards, and in the process of upward displacement, the silicon-molybdenum rod left heating element lower end detection groove 121, the hearth 11, the silicon-molybdenum rod left heating element abdication through hole 1422, the left lower plug brick silicon-molybdenum rod left heating element abdication hole 411, the left middle plug brick silicon-molybdenum rod abdication hole 421 and the left upper plug silicon-molybdenum rod left heating element abdication hole 431 are sequentially withdrawn, the left heating element 2 of the silicon-molybdenum rod is integrally moved out of the furnace body 1, then the left connecting cable connecting clamp 61 of the silicon-molybdenum rod power supply is loosened and fixed with one end, namely the upper end, of the newly started left heating element 2 of the silicon-molybdenum rod extending out of the upper surface of the left extraction release brick 6, and then the left heating element 2 of the silicon-molybdenum rod is returned to the furnace body 1 according to the reverse process and is in the state shown in the figure 1. Since the right heating element 3 of the silicon-molybdenum rod is replaced in the same way as the left heating element 2 of the silicon-molybdenum rod, the description is not repeated.

Because the left and right heating elements 2 and 3 of the silicon-molybdenum rod are not bonded with the left and right brick plugging mechanisms 4 and 5 respectively, and because the left and right brick plugging mechanisms 4 and 5 are provided with the left and right extraction release bricks 6 and 7 respectively, the advantages of the following four aspects can be comprehensively realized: firstly, because the left and right brick plugging mechanisms 4 and 5 which are fixed with the furnace top brick 14 in a building way and can respectively insert the lower ends of the left and right heating elements 2 and 3 of the silicon-molybdenum rod into the direction of the hearth 11 are adopted, and the left and right extraction release bricks 6 and 7 which are respectively matched with the left and right brick plugging mechanisms 4 and 5 in a plugging way and can pass through the upper ends of the left and right heating elements 2 and 3 of the silicon-molybdenum rod are arranged at the top of the furnace body 1, when the left and right heating elements 2 and 3 of the silicon-molybdenum rod are to be replaced, the left and right extraction release bricks 6 and 7 are only required to be upwards moved so as to take out and replace the left and right heating elements 2 and 3 of the silicon-molybdenum rod, which is beneficial to obviously reducing the workload and can reduce the engineering cost for replacing the silicon-molybdenum rod; secondly, the time for replacing the left and right heating elements 2 and 3 of the silicon-molybdenum rod is short, and the efficiency is high, so that the sintering efficiency of the sintering furnace on electronic components, electronic powder materials and the like is improved; thirdly, the replacement of the left and right heating elements 2 and 3 of the silicon-molybdenum rod only needs to lift up the left and right extraction and release bricks 6 and 7 without detaching and moving the furnace top bricks, so that the initial state of the top of the hearth 11 is not changed and the sealing effect is not influenced; fourthly, because the left and right heating elements 2 and 3 of the silicon-molybdenum rod can not be bonded with the left and right brick plugging mechanisms 4 and 5, the replacement is convenient and the operation intensity of an operator is reduced.

To sum up, the technical scheme of the furnace top structure provided by the utility model makes up the defects in the prior art, successfully completes the invention task, and truly realizes the technical effects of the applicant in the technical effect column.

Claims (10)

1. The furnace top structure of the wide-hearth high-temperature sintering furnace comprises a furnace body (1), wherein a hearth (11) which runs through from the front end to the rear end of the furnace body (1) in the length direction is formed in the central position of the furnace body (1), the furnace top structure is characterized by comprising a hearth top wall brick (141), a left heating element abdicating hole brick (142) of a silicon-molybdenum rod and a right heating element abdicating hole brick (143) of the silicon-molybdenum rod, the hearth top wall brick (141) corresponds to the top of the hearth (11) and is distributed to the rear end of the hearth (11) in the length direction from the front end of the hearth (11) in a state that one hearth top wall brick is abutted against one hearth top wall brick in the length direction, the surface of one side, facing upwards, of the hearth top wall brick (141) is flat, the side, facing downwards of the hearth top wall brick (141) is formed with a hearth top wall brick self-reinforcing cavity (1411), the right side of the left heating element abdicating hole brick (142) of the silicon-molybdenum rod is inserted into the hearth (, the left side of the silicon-molybdenum rod right heating element abdication hole brick (143) also extends into the hearth (11), the left side of the hearth top wall brick (141) is supported above the right side of the silicon-molybdenum rod left heating element abdication hole brick (142), and the right side of the hearth top wall brick (141) is supported above the left side of the silicon-molybdenum rod right heating element abdication hole brick (143).

2. The roof structure of a wide-hearth high-temperature sintering furnace according to claim 1, characterized in that a hearth top wall brick left supporting step cavity (1412) is formed at a lower left portion of the hearth top wall brick (141), and a hearth top wall brick right supporting step cavity (1413) is formed at a lower right portion of the hearth top wall brick (141), the hearth top wall brick left supporting step cavity (1412) being in supporting engagement with a left side of the silicon-molybdenum rod left heating element abdicating hole brick (142), and the hearth top wall brick right supporting step cavity (1413) being in supporting engagement with a right side of the silicon-molybdenum rod right heating element abdicating hole brick (143).

3. The roof structure of a wide-hearth high-temperature sintering furnace according to claim 2, characterized in that a hearth top wall brick left chamfer (1414) is formed on the left side of said hearth top wall brick (141) and on the side surface corresponding to the left facing side of said hearth top wall brick left supporting step cavity (1412), and a hearth top wall brick right chamfer (1415) is formed on the right side of the hearth top wall brick (141) and on the side surface corresponding to the right facing side of the hearth top wall brick right supporting step cavity (1413); a left silicon-molybdenum rod heating element abdicating hole brick right inclined surface (1421) is formed at the right side of the left silicon-molybdenum rod heating element abdicating hole brick (142) and at the position corresponding to the left hearth top wall brick inclined surface (1414), and a right silicon-molybdenum rod heating element abdicating hole brick left inclined surface (1431) is formed at the left side of the right silicon-molybdenum rod heating element abdicating hole brick (143) and at the position corresponding to the right hearth top wall brick inclined surface (1415); the left hearth top wall tile ramp (1414) and the left silicon-molybdenum rod heating element abdication perforated tile ramp (1421) are in opposite directions of inclination and cooperate with each other, and the right hearth top wall tile ramp (1415) and the left silicon-molybdenum rod heating element abdication perforated tile ramp (1431) are opposite of each other and cooperate with each other.

4. The roof structure of a wide hearth high temperature sintering furnace according to claim 1, characterized in that the cross-sectional shape of the hearth top wall brick self-reinforcing cavities (1411) is a herringbone shape.

5. The roof structure of the wide hearth high-temperature sintering furnace according to claim 1, 2 or 3, characterized in that the hearth top wall brick (141) is provided with a hearth top wall brick thermocouple relief hole (1416) which penetrates from the upper surface to the lower surface of the hearth top wall brick (141).

6. The furnace top structure of the wide hearth high-temperature sintering furnace according to claim 1, 2 or 3, wherein the left silicon-molybdenum rod heating element abdicating through hole (1422) is formed in the left silicon-molybdenum rod heating element abdicating hole brick (142) and penetrates from the upper surface to the lower surface of the left silicon-molybdenum rod heating element abdicating hole brick (142); and a silicon-molybdenum rod right heating element abdicating through hole (1432) which penetrates from the upper surface to the lower surface of the silicon-molybdenum rod right heating element abdicating hole brick (143) is formed in the silicon-molybdenum rod right heating element abdicating hole brick (143).

7. The roof structure of the wide hearth high temperature sintering furnace according to claim 5, characterized in that the hearth roof brick thermocouple relief holes (1416) are round holes or oval holes.

8. The furnace top structure of the wide hearth high temperature sintering furnace according to claim 6, wherein the left heating element abdication through hole (1422) of the silicon molybdenum rod and the right heating element abdication through hole (1432) of the silicon molybdenum rod are dumbbell-shaped.

9. The roof structure of the wide-hearth high-temperature sintering furnace according to claim 6, wherein a furnace wall brick left supporting block chamber (1423) is formed on the left side of the lower surface of the silicon-molybdenum rod left heating element abdicating hole brick (142); a furnace wall brick right supporting bricklaying cavity (1433) is formed on the right side of the lower surface of the silicon-molybdenum rod right heating element abdicating hole brick (143).

10. The roof structure of a wide hearth high temperature sintering furnace according to claim 9, characterised in that the depth of the furnace wall brick left support assembly cavity (1423) and the furnace wall brick right support assembly cavity (1433) is one fifth of the thickness of the silicon molybdenum rod left heating element abdicating hole brick (142) and the silicon molybdenum rod right heating element abdicating hole brick (143), respectively, and the thickness of the silicon molybdenum rod left and right heating element abdicating hole bricks (142, 143) are equal to each other.

Images