A heating section unit of a mesh belt sintering furnace and the mesh belt sintering furnace

Abstract

This invention provides a heating section unit for a mesh belt sintering furnace, located between the dewaxing section unit and the high-temperature section unit. It includes a heating section body, a heating section furnace chamber for conveying the mesh belt along its length, and a stacking space located below the heating section furnace chamber. The portion between the heating section furnace chamber and the stacking space forms a connecting part, which has a communicating channel connecting the heating section furnace chamber and the stacking space. The portion of the connecting part without the communicating channel forms a mesh belt support part, which supports the mesh belt on the side facing the heating section furnace chamber. This heating section unit significantly reduces oxide residue at the bottom of the heating section furnace chamber, preventing oxide accumulation from affecting the operation of the mesh belt. This invention also provides a mesh belt sintering furnace.

Description

Technical Field

[0001] This utility model relates to the field of mesh belt sintering furnaces, and in particular to a heating section unit and a mesh belt sintering furnace. Background Technology

[0002] In the pressing and molding process of powder metallurgy iron-based products, some lubricant is added to counteract friction between powder walls and facilitate demolding. Most of the lubricant is composed of organic substances. Lubricants for powder metallurgy iron-based parts mainly fall into two categories: one is micronized wax, primarily composed of paraffin wax and other organic substances. This type of lubricant decomposes into carbon dioxide, water, and hydrogen at high temperatures. It leaves relatively little residue, but its disadvantages include higher price and generally lower lubrication effectiveness. The other type is lubricant primarily composed of organic salts, such as zinc stearate. The advantages of this type are its lower price and better lubrication effect.

[0003] Due to its good lubricating effect and low price, zinc stearate is still widely used as a lubricant by domestic powder metallurgy companies, especially those in the low-to-mid-range market. For sintering equipment, the decomposition of zinc stearate leaves zinc oxide residue, which cannot be emitted through a chimney like other gases. Most of the zinc oxide remains inside the furnace. If the zinc oxide accumulates on the furnace bottom plate, it will combine with elements such as carbon and copper in the product to form hard "lumps." As it slowly accumulates, the bottom surface will become higher and higher, obstructing the movement of the conveyor belt. Over time, combined with the carbon and copper residues in the product, the surface will become very hard, damaging the conveyor belt surface; in severe cases, it can even cut the conveyor belt into two. Furthermore, at temperatures around 900 degrees Celsius, zinc oxide will be partially reduced to zinc vapor by the reducing gases (hydrogen and carbon monoxide) in the furnace. Since the sintering furnace is built of refractory bricks, these zinc vapors can penetrate into the gaps and voids of the refractory bricks, as well as the muffles and pads of silicon carbide materials. After adhering and oxidizing, they will slowly accumulate on the surface of the refractory bricks, forming a zinc oxide deposit similar to stalactites over time, which will block the movement of the conveyor belt.

[0004] The aforementioned problems typically occur in the heating section of the mesh belt sintering furnace, which can also be considered as the rear of the dewaxing section and the front of the high-temperature calcination section. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a heating section unit for a mesh belt sintering furnace. This unit has a storage space connected to the heating section furnace chamber below it. This allows oxides that previously accumulated in the heating section furnace chamber to accumulate in the storage space, significantly reducing oxide residue at the bottom of the heating section furnace chamber. This prevents oxide accumulation at the bottom of the heating section furnace chamber from affecting the operation of the mesh belt, ensuring stable and reliable operation of the mesh belt. This utility model also provides a mesh belt sintering furnace.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] A heating section unit of a mesh belt sintering furnace, located between a dewaxing section unit and a high-temperature section unit, includes a heating section body. The heating section body has a heating section furnace chamber along its length for conveying the mesh belt. The heating section body also has a stacking space located below the heating section furnace chamber. A connection portion is formed between the heating section furnace chamber and the stacking space. The connection portion has a communicating channel connecting the heating section furnace chamber and the stacking space. A portion of the connection portion without the communicating channel forms a mesh belt support portion. The side of the mesh belt support portion facing the heating section furnace chamber supports the mesh belt.

[0008] By adopting the above technical solution, since the accumulation space is provided below the heating section furnace and the accumulation space is connected to the heating section furnace through the connecting channel, when the mesh belt carries the product into the heating section furnace located above the accumulation space, the mesh belt support can support the mesh belt. The high temperature decomposes the lubricant on the product to produce oxides. For example, when the lubricant is zinc stearate, it will produce zinc oxide after decomposition. At this time, the oxide will drip into the accumulation space through the connecting channel, greatly reducing the oxide residue at the bottom of the heating section furnace. This avoids the accumulation of oxides at the bottom of the heating section furnace from affecting the operation of the mesh belt and ensures the stable and reliable operation of the mesh belt.

[0009] Furthermore, the connecting portion is provided with a plurality of spaced-apart communication channels.

[0010] By adopting the above technical solution, the connection part is more reasonable, and the multiple connecting channels allow the oxide to drip into the accumulation space as much as possible through the connecting channels, thereby minimizing the oxide residue at the bottom of the furnace in the heating section.

[0011] Furthermore, the connecting channel extends along the length of the main body of the heating section, and the mesh belt support extends along the length of the main body of the heating section.

[0012] By adopting the above technical solution, the structure of the connecting channel and the mesh belt support is more reasonable. The mesh belt support, which extends along the length of the main body of the heating section, can better support the mesh belt and the product, ensuring the stable and reliable operation of the mesh belt.

[0013] The product will move along the length of the heating section under the drive of the mesh belt. Therefore, the connecting channel that extends along the length of the heating section allows the oxides to drip into the accumulation space and accumulate during the product's movement.

[0014] Furthermore, the connecting channel is vertically arranged along the height direction of the main body of the heating section.

[0015] By adopting the above technical solution, the connecting channel is made more reasonable. Under the action of gravity, the oxide drips roughly vertically downwards. The vertically set connecting channel allows the oxide to enter the accumulation space through the connecting channel as much as possible, avoiding the accumulation of oxide in the connecting channel due to the inability of the oxide to pass through smoothly, which would cause the connecting channel to become blocked.

[0016] Furthermore, the accumulation space is located close to the bottom surface of the furnace chamber in the heating section.

[0017] By adopting the above technical solution, the connecting channel is made as short as possible, which further reduces the probability that oxides cannot pass through the connecting channel smoothly and accumulate in the connecting channel, thereby increasing the probability that oxides can pass through the connecting channel smoothly to reach the accumulation space, and ensuring that the connecting channel remains unobstructed during long-term use.

[0018] Furthermore, the mesh belt support is arranged in a planar manner on the side facing the furnace chamber of the heating section.

[0019] By adopting the above technical solution, the mesh belt support is arranged in a plane on the side facing the furnace chamber of the heating section, which enables the mesh belt support to better support the mesh belt, i.e., the product.

[0020] Furthermore, multiple stacking spaces are provided, and along the length direction of the heating section body, the multiple stacking spaces are spaced apart below the heating section furnace.

[0021] Specifically, there are two stacking spaces.

[0022] By adopting the above technical solution, the arrangement of the stacking space is more reasonable. The multiple stacking spaces arranged along the length of the heating section body allow the oxides to drip into each stacking space through each of the connecting channels and accumulate when the product is moving along the length of the heating section body.

[0023] Furthermore, since the mesh belt support is arranged along the length of the heating section body, the stacking space is arranged in multiple segments along the length of the heating section body. This allows the length of the mesh belt support to be shortened, ensuring its rigidity so that it can stably and reliably support the mesh belt and the product. If only one stacking space is set to cover the entire heating section furnace, the length of the mesh belt support will be too long, weakening its rigidity. This may cause the middle part of the mesh belt support to bend downwards, making it unable to properly support the mesh belt and the product.

[0024] Furthermore, the connecting part includes a communication port and multiple support pipes. The communication port is located between the heating section furnace and the stacking space. The side of the communication port facing the heating section furnace is connected to the bottom of the heating section furnace, and the side of the communication port facing the stacking space is connected to the top of the stacking space. The cross-section of the communication port matches the cross-section of the stacking space. Multiple support pipes are spaced apart at the communication port, and both ends of the support pipes are connected to the two sides of the communication port respectively. The support pipes form the mesh belt support part, and the interval between two adjacent support pipes forms the communication channel.

[0025] The support tube extends along the length of the main body of the heating section.

[0026] Specifically, the support tube is a square tube made of silicon carbide; there are three support tubes, and correspondingly, there are four connecting channels.

[0027] By adopting the above technical solution, the setting of the connecting part is more reasonable, the formation of the mesh belt support part and the connecting channel is more reasonable, which facilitates the actual production of the heating section unit of the mesh belt sintering furnace;

[0028] The use of square tubing for the support tube allows the mesh belt support to be arranged in a planar manner on one side facing the furnace chamber of the heating section.

[0029] Furthermore, the main body of the heating section is provided with a ash removal hole, and one end of the ash removal hole extends toward the accumulation space and communicates with the accumulation space to form a ash removal hole communication opening, and the other side of the ash removal hole extends toward the outside and communicates with the outside to form a ash removal opening.

[0030] When there are multiple stacking spaces, the number of ash removal holes matches the number of stacking spaces and corresponds one-to-one.

[0031] By adopting the above technical solution, the heating section unit of the mesh belt sintering furnace is made more reasonable. Operators can periodically clean the oxides accumulated in the accumulation space through the ash removal hole, so as to avoid excessive oxide accumulation in the accumulation space and affect normal use.

[0032] Furthermore, the ash removal hole is disposed on the side wall of the heating section body, and the position of the ash removal hole matches the position of the accumulation space. The ash removal hole opening is connected to the side wall of the accumulation space, and the ash removal opening of the ash removal hole penetrates the side wall of the heating section body.

[0033] By adopting the above technical solution, the setting of the ash removal hole is more reasonable, and its position is convenient for operators to clean the oxides in the accumulation space through the ash removal hole.

[0034] Furthermore, the bottom surface of the ash removal hole is coplanar with the bottom surface of the accumulation space, or the bottom surface of the ash removal hole is lower than the bottom surface of the accumulation space; preferably, the bottom surface of the ash removal hole is coplanar with the bottom surface of the accumulation space.

[0035] By adopting the above technical solution, the setting of the ash removal hole is more reasonable. Since the bottom surface of the ash removal hole is coplanar with the bottom surface of the accumulation space, or the bottom surface of the ash removal hole is lower than the bottom surface of the accumulation space, it not only makes it easier for operators to process the oxides in the accumulation space through the ash removal hole (i.e., the operator can use a rod to act on the bottom of the oxides to separate the oxides from the bottom of the accumulation space), but also facilitates the entry of oxides from the accumulation space into the ash removal hole, so as to be removed through the ash removal hole.

[0036] Furthermore, a detachable ash removal hole cover is provided at the ash removal port, and the ash removal hole cover can completely cover the ash removal port.

[0037] By adopting the above technical solution, the heating section unit of the mesh belt sintering furnace is made more reasonable; when the ash removal hole cover is installed at the ash removal port, the ash removal hole can be relatively isolated from the outside world, that is, the heating section furnace and the accumulation space in the main body of the heating section are relatively isolated from the outside world, so as to avoid the external environment from affecting the heating section furnace and the accumulation space in the main body of the heating section. The main purpose is to ensure that the temperature of the heating section furnace and the accumulation space in the main body of the heating section is not affected by the outside world.

[0038] When the operator needs to clean the oxides in the accumulation space through the ash removal hole, simply remove the ash removal hole cover from the ash removal opening to expose the ash removal opening.

[0039] Furthermore, the ash removal opening of the ash removal hole protrudes from the side wall of the heating section body, and the ash removal hole protrudes outward in the circumferential direction on the outer side of the ash removal opening to form an installation mating part. The ash removal hole cover is placed on the ash removal opening, and the ash removal hole cover is detachably connected to the installation mating part.

[0040] By adopting the above technical solution, the structure of the ash removal hole and the ash removal hole cover is more reasonable, which facilitates the detachable connection between the ash removal hole cover and the ash removal hole cover; the ash removal port side of the ash removal hole protrudes from the side wall of the heating section body, so that there is a certain gap between the installation mating part and the side wall of the heating section body, so as to facilitate the operation of the operator.

[0041] Specifically, the ash removal hole cover and the mounting mating part are detachably connected by bolts.

[0042] Furthermore, the main body of the heating section is constructed using refractory bricks.

[0043] By adopting the above technical solution, the main body of the heating section is made more reasonable, which facilitates actual production.

[0044] Furthermore, the top of the heating section furnace chamber facing the dewaxing section unit of the mesh belt sintering furnace is wrapped with a high-temperature resistant and dense insulating material;

[0045] Specifically, the isolation component is made of stainless steel.

[0046] By adopting the above technical solution, the arrangement of the isolation component makes the top of the heating section furnace facing the dewaxing section unit of the mesh belt sintering furnace more reasonable. Specifically, at high temperatures, metal oxides are partially reduced to metal vapor by the reducing gases in the furnace. For example, zinc oxide is reduced to zinc vapor by reducing gases such as hydrogen and carbon monoxide. The top of the heating section furnace facing the dewaxing section unit of the mesh belt sintering furnace is usually constructed of refractory bricks. Refractory bricks have fine pores and voids, so metal vapors will penetrate into the fine pores and voids of the refractory bricks and slowly accumulate. Over a long period of time, zinc oxide deposits similar to stalactites will form, which are not easy to clean, especially the part that penetrates into the fine pores and voids of the refractory bricks. Cleaning may also damage the refractory bricks.

[0047] The isolation element, by wrapping the top of the refractory bricks on the side of the heating section furnace facing the dewaxing section of the mesh belt sintering furnace, can greatly alleviate the accumulation of zinc oxide in this area and facilitate cleaning. Specifically, the isolation element is high-temperature resistant and dense, preventing metal vapor from directly penetrating into its interior. Instead, it adheres to the surface of the isolation element, but due to the weak adhesion, the zinc oxide accumulation cycle is prolonged. Furthermore, operators can clean the surface of the isolation element by periodically poking off the deposits with a rod, thus reducing damage.

[0048] The isolation chamber only needs to wrap the top of the refractory bricks on the side of the heating section furnace facing the dewaxing section unit of the mesh belt sintering furnace, so the required amount is not large, which greatly controls the overall cost.

[0049] Furthermore, the heating section unit of the mesh belt sintering furnace includes heating elements capable of heating the furnace chamber of the heating section.

[0050] By adopting the above technical solution, the heating element can heat the furnace chamber in the heating section, thereby achieving heat treatment of the products on the mesh belt.

[0051] Furthermore, a heating element receiving cavity is provided above the heating section furnace, and the heating element is fixedly installed in the heating element receiving cavity;

[0052] The bottom of the heating element receiving cavity is connected to the top of the heating section furnace.

[0053] By adopting the above technical solution, the heating section unit of the mesh belt sintering furnace is made more reasonable, and the setting of the heating element receiving cavity can provide an installation foundation for the installation of the heating element; the bottom of the heating element receiving cavity is connected to the top of the heating section furnace, so that the heat generated by the heating element can affect the furnace inside the heating section to achieve heating treatment; the above structural design is reasonable.

[0054] Furthermore, the heating section unit of the mesh belt sintering furnace also includes a separator with good thermal conductivity. The separator is disposed between the heating element receiving cavity and the heating section furnace chamber so that the heating element receiving cavity and the heating section furnace chamber are spatially independent.

[0055] Specifically, the separator is made of silicon carbide material.

[0056] By adopting the above technical solution, the heating section unit of the mesh belt sintering furnace is made more reasonable. The setting of the partition makes the heating element receiving cavity and the heating section furnace chamber relatively independent in space. Therefore, when the heating section unit of the mesh belt sintering furnace is running, the partition can block the metal vapor, which can reduce the metal vapor from entering the heating element receiving cavity and adhering to the heating element. This allows the heating element to operate stably and reliably, ensuring the stability and reliability of the heat it radiates outward.

[0057] Furthermore, the separator has good thermal conductivity, so it can effectively conduct the heat from the radiation of the heating element to the furnace chamber of the heating section, ensuring the stable and reliable heating of the furnace chamber by the heating element.

[0058] With prolonged use, metal vapor will adhere to the separator and form oxide deposits. At this point, the operator only needs to use a rod to poke off the oxide deposits on the separator to achieve cleaning, which is very convenient.

[0059] Furthermore, the separator has a sheet-like structure and an arc-shaped structure that bends toward the heating element receiving cavity.

[0060] By adopting the above technical solution, the structure of the separator is more reasonable. The separator has a sheet-like structure, which allows the heat generated by the heating element to be transferred more effectively to the furnace chamber of the heating section, reducing heat loss on the separator. The separator has an arc-shaped structure that bends towards the heating element cavity, which increases the space of the furnace chamber of the heating section and avoids the separator from affecting the products in the furnace chamber of the heating section.

[0061] Specifically, along the width of the main body of the heating section, the inner walls on both sides between the heating element receiving cavity and the furnace chamber of the heating section are provided with stepped surfaces, and the two ends of the separator are respectively mounted on the stepped surfaces to realize the installation of the separator.

[0062] Furthermore, the heating element includes a dense outer tube with good thermal conductivity and a heating element disposed inside the outer tube;

[0063] Specifically, the outer tube is made of stainless steel, and the heating element is a heating wire.

[0064] By adopting the above technical solution, the structure of the heating element is more reasonable. The heating element can radiate heat outward to heat the furnace chamber in the heating section. The outer tube is set outside the heating element to protect it. The outer tube has good thermal conductivity, so it can transfer the heat generated by the heating element more effectively, ensuring the overall heating efficiency of the heating element.

[0065] If the metal vapor enters the heating element cavity, the outer tube can greatly alleviate the accumulation of zinc oxide there and facilitate cleaning. Specifically, the outer tube is dense, and the metal vapor cannot directly penetrate into the interior of the outer tube. It can only adhere to the surface of the outer tube. However, due to the weak adhesion, the zinc oxide accumulation cycle will be longer. Moreover, the operator can clean the deposits on the surface of the outer tube by periodically poking them off, which also reduces damage.

[0066] Furthermore, the heating section unit of the mesh belt sintering furnace includes a temperature detection structure capable of detecting the temperature of the furnace chamber in the heating section.

[0067] Specifically, the temperature detection structure uses a thermocouple.

[0068] By adopting the above technical solution, the heating section unit of the mesh belt sintering furnace is made more reasonable. The temperature detection structure can detect the temperature of the furnace chamber in the heating section, so that the operator can know the current temperature of the furnace chamber in the heating section and ensure that the current temperature of the furnace chamber in the heating section meets the product requirements.

[0069] Furthermore, the temperature detection structure is positioned close to the heating element.

[0070] Using the above technical solution, the temperature detection structure is positioned close to the heating element to detect the temperature at the heating element. Since the heating element heats the furnace chamber in the heating section to achieve the temperature rise of the furnace chamber, the temperature at the heating element can be indirectly derived from the temperature at the heating element. It is only necessary to consider the heat loss during the heat transfer process from the heating element to the furnace chamber. If the heat loss during the heat transfer process is very small, the temperature at the heating element can be indirectly equal to the temperature of the furnace chamber in the heating section.

[0071] Specifically, the temperature detection structure is disposed within the heating element receiving cavity.

[0072] A mesh belt sintering furnace includes the aforementioned mesh belt sintering furnace heating section unit.

[0073] By adopting the above technical solution, the mesh belt sintering furnace is made more reasonable. Since the heating section unit of the mesh belt sintering furnace is used, the oxides decomposed by the lubricant will drip into the accumulation space through the connecting channel, which greatly reduces the oxide residue at the bottom of the heating section furnace and avoids the accumulation of oxides at the bottom of the heating section furnace from affecting the operation of the mesh belt, thus ensuring the stable and reliable operation of the mesh belt.

[0074] Compared with the prior art, the present invention has the following beneficial effects:

[0075] (1) The heating section unit and the mesh belt sintering furnace of this utility model are provided with a stacking space connected to the heating section furnace below the heating section furnace, so that the oxides originally stacked in the heating section furnace will enter the stacking space and stack, greatly reducing the oxide residue at the bottom of the heating section furnace, avoiding the impact of oxides stacking at the bottom of the heating section furnace on the operation of the mesh belt, and ensuring the stable and reliable operation of the mesh belt.

[0076] (2) The heating section unit and the mesh belt sintering furnace of this utility model are covered with a high-temperature resistant and dense isolation component on the top of the side of the heating section furnace facing the dewaxing section unit of the mesh belt sintering furnace. Metal vapor cannot directly penetrate into the interior of the isolation component and can only adhere to the surface of the isolation component. However, due to the weak adhesion, the zinc oxide accumulation cycle will also be longer. Moreover, the operator can clean the adhering material on the surface of the isolation component by periodically poking it off with a rod, which also reduces damage.

[0077] (3) The heating section unit and the mesh belt sintering furnace of this utility model are reasonably designed. Attached Figure Description

[0078] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0079] Figure 1 This is a schematic diagram of the heating section unit of the mesh belt sintering furnace of this utility model;

[0080] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0081] Figure 3 This is a schematic diagram of the structure of the mesh belt sintering furnace of this utility model;

[0082] The component names corresponding to the various labels in the attached figures are as follows: 1. Main body of the heating section; 2. Heating section furnace chamber; 3. Stacking space; 4. Connecting part; 401. Connecting channel; 402. Mesh belt support part; 403. Connecting port; 404. Support pipe; 5. Ash removal hole; 501. Ash removal hole connecting port; 502. Ash removal port; 503. Installation mating part; 6. Ash removal hole cover; 7. Isolating component; 8. Heating component; 9. Heating component receiving cavity; 10. Separating component; 11. Temperature detection structure;

[0083] 100. Mesh belt sintering furnace heating section unit; 200. Mesh belt sintering furnace dewaxing section unit; 300. Mesh belt sintering furnace dewaxing section unit;

[0084] a. Mesh conveyor belt. Detailed Implementation

[0085] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0086] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0087] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0088] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0089] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0090] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0091] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0092] See Figures 1 to 2 This utility model provides a heating section unit 100 for a mesh belt sintering furnace, located between a dewaxing section unit 300 and a high-temperature section unit. It includes a heating section body 1, a heating section furnace chamber 2 for conveying the mesh belt a along its length, and a stacking space 3 located below the heating section furnace chamber 2. The portion between the heating section furnace chamber 2 and the stacking space 3 forms a connecting part 4, which has a connecting channel 401 for connecting the heating section furnace chamber 2 and the stacking space 3. The portion of the connecting part 4 without the connecting channel 401 forms a mesh belt support part 402, which supports the mesh belt a on the side facing the heating section furnace chamber 2.

[0093] By adopting the above technical solution, since the accumulation space 3 is provided below the heating section furnace 2, and the accumulation space 3 is connected to the heating section furnace 2 through the connecting channel 401, when the mesh belt a carries the product into the heating section furnace 2 located above the accumulation space 3, the mesh belt support part 402 can support the mesh belt a. The high temperature decomposes the lubricant on the product to produce oxides. For example, when the lubricant is zinc stearate, it will produce zinc oxide after decomposition. At this time, the oxide will drip into the accumulation space 3 through the connecting channel 401, greatly reducing the oxide residue at the bottom of the heating section furnace 2, avoiding the accumulation of oxides at the bottom of the heating section furnace 2 from affecting the operation of the mesh belt a, and ensuring the stable and reliable operation of the mesh belt a.

[0094] Furthermore, the connecting part 4 is provided with a plurality of spaced-apart communication channels 401.

[0095] By adopting the above technical solution, the connection part 4 is made more reasonable, and the multiple connecting channels 401 can allow oxides to drip into the accumulation space 3 as much as possible through the connecting channels 401, thereby minimizing the oxide residue at the bottom of the furnace 2 in the heating section.

[0096] Furthermore, the connecting channel 401 extends along the length direction of the heating section body 1, and the mesh belt support 402 extends along the length direction of the heating section body 1.

[0097] By adopting the above technical solution, the structure of the connecting channel 401 and the mesh belt support part 402 is more reasonable. The mesh belt support part 402, which extends along the length direction of the heating section body 1, can better support the mesh belt a and the product, and ensure the stable and reliable operation of the mesh belt a.

[0098] The product will move along the length of the heating section body 1 under the drive of the mesh belt a. Therefore, the connecting channel 401, which extends along the length of the heating section body 1, allows the oxides to drip into the accumulation space 3 through the connecting channel 401 during the product's movement.

[0099] Furthermore, the connecting channel 401 is vertically arranged along the height direction of the main body 1 of the heating section.

[0100] By adopting the above technical solution, the connecting channel 401 is made more reasonable. Under the action of gravity, the oxide drips down vertically. The vertically set connecting channel 401 can enable the oxide to enter the accumulation space 3 through the connecting channel 401 as much as possible, avoiding the accumulation of oxide in the connecting channel 401 due to the inability of the oxide to pass through smoothly, which would cause the connecting channel 401 to be blocked.

[0101] Furthermore, the stacking space 3 is located close to the bottom surface of the heating section furnace 2.

[0102] By adopting the above technical solution, the connecting channel 401 is made as short as possible, which further reduces the probability that oxides cannot pass through the connecting channel 401 smoothly and accumulate in the connecting channel 401, thereby increasing the probability that oxides can pass through the connecting channel 401 smoothly and reach the accumulation space 3, and ensuring that the connecting channel 401 remains unobstructed during long-term use.

[0103] Furthermore, the mesh belt support 402 is arranged in a planar manner on the side facing the heating section furnace 2.

[0104] With the above technical solution, the mesh belt support 402 is arranged in a plane facing the side of the furnace chamber 2 in the heating section, which enables the mesh belt support 402 to better support the mesh belt a, i.e., the product.

[0105] Furthermore, multiple stacking spaces 3 are provided, and along the length direction of the heating section body 1, multiple stacking spaces 3 are spaced apart below the heating section furnace 2;

[0106] Specifically, there are two stacking spaces 3.

[0107] By adopting the above technical solution, the stacking space 3 is set more reasonably. The multiple stacking spaces 3 set along the length of the heating section body 1 allow the oxides to drip into each stacking space 3 through each of the connecting channels 401 and accumulate when the product is moving along the length of the heating section body 1.

[0108] Furthermore, since the mesh belt support 402 is arranged along the length direction of the heating section body 1, the stacking space 3 is arranged in multiple segments along the length direction of the heating section body 1. This allows the length of the mesh belt support 402 to be shortened, ensuring its rigidity so as to stably and reliably support the mesh belt a and the product. If only one stacking space 3 is set to cover the entire heating section furnace 2, the length of the mesh belt support 402 will be too long, weakening its rigidity. This may cause the middle part of the mesh belt support 402 to bend downwards, making it unable to properly support the mesh belt a and the product.

[0109] Further, the connecting part 4 includes a connecting port 403 and a plurality of support pipes 404. The connecting port 403 is located between the heating section furnace 2 and the stacking space 3. The side of the connecting port 403 facing the heating section furnace 2 is connected to the bottom of the heating section furnace 2, and the side of the connecting port 403 facing the stacking space 3 is connected to the top of the stacking space 3. The cross-section of the connecting port 403 matches the cross-section of the stacking space 3. The plurality of support pipes 404 are spaced apart at the connecting port 403, and the two ends of the support pipes 404 are respectively connected to the two sides of the connecting port 403. The support pipes 404 form the mesh belt support part 402, and the interval between two adjacent support pipes 404 forms the connecting channel 401.

[0110] The support tube 404 extends along the length of the heating section body 1.

[0111] Specifically, the support tube 404 is a square tube made of silicon carbide material; there are three support tubes 404, and correspondingly, there are four connecting channels 401.

[0112] By adopting the above technical solution, the setting of the connecting part 4 is more reasonable, the formation of the mesh belt support part 402 and the connecting channel 401 is more reasonable, which facilitates the actual production of the mesh belt sintering furnace heating section unit 100;

[0113] The square tube of the support pipe 404 allows the mesh belt support part 402 to be arranged in a plane facing the side of the furnace chamber 2 in the heating section.

[0114] Furthermore, the heating section body 1 is provided with a ash removal hole 5, and one end of the ash removal hole 5 extends toward the accumulation space 3 and is connected to the accumulation space 3 to form an ash removal hole communication port 501, and the other side of the ash removal hole 5 extends toward the outside and is connected to the outside to form an ash removal port 502.

[0115] When there are multiple stacking spaces 3, the number of ash removal holes 5 is matched with the number of stacking spaces 3 and corresponds one-to-one.

[0116] By adopting the above technical solution, the heating section unit 100 of the mesh belt sintering furnace is made more reasonable. Operators can periodically clean the oxides accumulated in the accumulation space 3 through the ash removal hole 5, so as to avoid excessive accumulation of oxides in the accumulation space 3 and affect normal use.

[0117] Furthermore, the ash removal hole 5 is provided on the side wall of the heating section body 1, and the location of the ash removal hole 5 matches the location of the accumulation space 3. The ash removal hole communication port 501 of the ash removal hole 5 is connected to the side wall of the accumulation space 3, and the ash removal port 502 of the ash removal hole 5 penetrates the side wall of the heating section body 1.

[0118] By adopting the above technical solution, the setting of the ash removal hole 5 is more reasonable, and its position is convenient for operators to clean the oxides in the accumulation space 3 through the ash removal hole 5.

[0119] Furthermore, the bottom surface of the ash removal hole 5 is coplanar with the bottom surface of the accumulation space 3, or the bottom surface of the ash removal hole 5 is lower than the bottom surface of the accumulation space 3; preferably, the bottom surface of the ash removal hole 5 is coplanar with the bottom surface of the accumulation space 3.

[0120] By adopting the above technical solution, the setting of the ash removal hole 5 is more reasonable. Since the bottom surface of the ash removal hole 5 is coplanar with the bottom surface of the accumulation space 3 or the bottom surface of the ash removal hole 5 is lower than the bottom surface of the accumulation space 3, it not only makes it easier for operators to process the oxides in the accumulation space 3 through the ash removal hole 5, that is, the operator can use a rod to act on the bottom of the oxide to separate the oxide from the bottom of the accumulation space 3; but it also makes it easier for the oxide to enter the ash removal hole 5 from the accumulation space 3 and then be taken out through the ash removal hole 5.

[0121] Furthermore, a detachable ash removal hole cover 6 is provided at the ash removal port 502, and the ash removal hole cover 6 can completely cover the ash removal port 502.

[0122] By adopting the above technical solution, the heating section unit 100 of the mesh belt sintering furnace is made more reasonable; when the ash removal hole cover 6 is installed at the ash removal port 502, the ash removal hole 5 can be relatively isolated from the outside world, that is, the heating section furnace 2 and the accumulation space 3 in the heating section body 1 are relatively isolated from the outside world, so as to avoid the external environment from affecting the heating section furnace 2 and the accumulation space 3 in the heating section body 1. The main reason is that the temperature of the heating section furnace 2 and the accumulation space 3 in the heating section body 1 is not affected by the outside world.

[0123] When the operator needs to clean the oxides in the accumulation space 3 through the ash removal hole 5, he / she only needs to remove the ash removal hole cover 6 from the ash removal port 502 to expose the ash removal port 502.

[0124] Furthermore, the ash removal opening 502 of the ash removal hole 5 protrudes from the side wall of the heating section body 1, and the ash removal hole 5 protrudes outward in the outer circumferential direction to form an installation fitting part 503 on the outer side of the ash removal opening 502. The ash removal hole cover 6 is placed on the ash removal opening 502, and the ash removal hole cover 6 is detachably connected to the installation fitting part 503.

[0125] By adopting the above technical solution, the structure of the ash removal hole 5 and the ash removal hole cover 6 is more reasonable, which facilitates the detachable connection between the ash removal hole cover 6 and the ash removal hole cover 6; the ash removal port 502 of the ash removal hole 5 protrudes from the side wall of the heating section body 1, so that there is a certain gap between the installation mating part 503 and the side wall of the heating section body 1, so as to facilitate the operation of the operator;

[0126] Specifically, the ash removal hole cover 6 and the mounting mating part 503 are detachably connected by bolts.

[0127] Furthermore, the main body 1 of the heating section is constructed using refractory bricks.

[0128] By adopting the above technical solution, the main body 1 of the heating section becomes more reasonable and facilitates actual production.

[0129] Furthermore, the top of the heating section furnace 2 facing the dewaxing section unit 300 of the mesh belt sintering furnace is wrapped with a high-temperature resistant and dense insulating component 7;

[0130] Specifically, the isolation component 7 is made of stainless steel.

[0131] By adopting the above technical solution, the arrangement of the isolation component 7 makes the top of the heating section furnace 2 facing the dewaxing section unit 300 of the mesh belt sintering furnace more reasonable. Specifically, at high temperatures, metal oxides are partially reduced to metal vapor by the reducing gases in the furnace. For example, zinc oxide is reduced to zinc vapor by reducing gases such as hydrogen and carbon monoxide. The top of the heating section furnace 2 facing the dewaxing section unit 300 of the mesh belt sintering furnace is usually constructed of refractory bricks. Refractory bricks have fine pores and gaps, so metal vapors will penetrate into the fine pores and gaps of the refractory bricks and slowly accumulate. Over a long period of time, zinc oxide deposits similar to stalactites will form, which are not easy to clean, especially the part that penetrates into the fine pores and gaps of the refractory bricks. Cleaning may also damage the refractory bricks.

[0132] The isolation element 7 is designed to wrap the top of the refractory bricks on the side of the heating section furnace 2 facing the dewaxing section unit 300 of the mesh belt sintering furnace, which can greatly alleviate the accumulation of zinc oxide in this area and facilitate cleaning. Specifically, the isolation element 7 is high temperature resistant and dense, and metal vapor cannot directly penetrate into the interior of the isolation element 7. It can only adhere to the surface of the isolation element 7. However, due to the weak adhesion, the zinc oxide accumulation cycle will be longer. Moreover, the operator can clean the adhering substances on the surface of the isolation element 7 by periodically poking them off with a rod, which also reduces damage.

[0133] The isolation chamber only needs to wrap the top of the refractory bricks on the side of the heating section furnace 2 facing the dewaxing section unit 300 of the mesh belt sintering furnace, so the required amount is not large, which greatly controls the overall cost.

[0134] Furthermore, the heating section unit 100 of the mesh belt sintering furnace includes a heating element 8 capable of heating the furnace chamber 2 of the heating section.

[0135] By adopting the above technical solution, the heating element 8 can heat the furnace chamber 2 in the heating section, thereby achieving heat treatment of the products on the mesh belt a.

[0136] Furthermore, a heating element receiving cavity 9 is provided above the heating section furnace 2, and the heating element 8 is fixedly installed in the heating element receiving cavity 9;

[0137] The bottom of the heating element receiving cavity 9 is connected to the top of the heating section furnace 2.

[0138] By adopting the above technical solution, the heating section unit 100 of the mesh belt sintering furnace is more reasonable. The setting of the heating element receiving cavity 9 can provide an installation foundation for the installation of the heating element 8. The bottom of the heating element receiving cavity 9 is connected to the top of the heating section furnace chamber 2, so that the heat generated by the heating element 8 can affect the furnace chamber 2 of the heating section to achieve heating treatment. The above structural design is reasonable.

[0139] Furthermore, the heating section unit 100 of the mesh belt sintering furnace also includes a separator 10 with good thermal conductivity. The separator 10 is disposed between the heating element receiving cavity 9 and the heating section furnace chamber 2 so that the heating element receiving cavity 9 and the heating section furnace chamber 2 are relatively independent in space.

[0140] Specifically, the separator 10 is made of silicon carbide material.

[0141] By adopting the above technical solution, the heating section unit 100 of the mesh belt sintering furnace is made more reasonable. The setting of the partition 10 makes the heating element receiving cavity 9 and the heating section furnace chamber 2 spatially independent. Therefore, when the heating section unit 100 of the mesh belt sintering furnace is running, the partition 10 can block the metal vapor, which can reduce the metal vapor from entering the heating element receiving cavity 9 and adhering to the heating element 8. This allows the heating element 8 to operate stably and reliably, ensuring the stability and reliability of the heat it radiates outward.

[0142] Furthermore, the separator 10 has good thermal conductivity, so it can effectively conduct the heat from the radiation of the heating element 8 to the furnace chamber 2 in the heating section, ensuring that the heating element 8 provides stable and reliable heating to the furnace chamber 2 in the heating section.

[0143] With prolonged use, metal vapor will adhere to the separator 10 and form oxide deposits. At this time, the operator only needs to use a rod to poke off the oxide deposits on the separator 10 to achieve cleaning, which is very convenient.

[0144] Furthermore, the partition 10 has a sheet-like structure and an arc-shaped structure that bends toward the heating element receiving cavity 9.

[0145] By adopting the above technical solution, the structure of the separator 10 is more reasonable. The separator 10 has a sheet-like structure, which allows the heat generated by the heating element 8 to be transferred more effectively to the heating section furnace 2, reducing heat loss on the separator 10. The separator 10 has an arc-shaped structure that bends towards the heating element receiving cavity 9, which increases the space of the heating section furnace 2 and avoids the separator 10 affecting the products in the heating section furnace 2.

[0146] Specifically, along the width direction of the heating section body 1, the inner walls on both sides between the heating element receiving cavity 9 and the heating section furnace 2 are provided with stepped surfaces, and the two ends of the separator 10 are respectively mounted on the stepped surfaces to realize the installation of the separator 10.

[0147] Furthermore, the heating element 8 includes a dense outer tube with good thermal conductivity and a heating element disposed inside the outer tube;

[0148] Specifically, the outer tube is made of stainless steel, and the heating element is a heating wire.

[0149] By adopting the above technical solution, the structure of the heating element 8 is more reasonable. The heating element can radiate heat outward to heat the furnace chamber 2 in the heating section. The outer tube is set outside the heating element to protect it. The outer tube has good thermal conductivity, so it can transfer the heat generated by the heating element more effectively, ensuring the overall heating efficiency of the heating element 8.

[0150] If the metal vapor enters the heating element cavity 9, the outer tube can greatly alleviate the accumulation of zinc oxide there and is also easy to clean. Specifically, the outer tube is dense, and the metal vapor cannot directly penetrate into the interior of the outer tube. It can only adhere to the surface of the outer tube. However, due to the weak adhesion, the zinc oxide accumulation cycle will be longer. Moreover, the operator can clean the deposits on the surface of the outer tube by periodically poking them off, which also reduces damage.

[0151] Furthermore, the heating section unit 100 of the mesh belt sintering furnace includes a temperature detection structure 11 capable of detecting the temperature of the furnace chamber 2 in the heating section.

[0152] Specifically, the temperature detection structure 11 uses a thermocouple.

[0153] By adopting the above technical solution, the heating section unit 100 of the mesh belt sintering furnace is made more reasonable. The temperature detection structure 11 can detect the temperature of the furnace chamber 2 in the heating section, so that the operator can understand the current temperature of the furnace chamber 2 in the heating section and ensure that the current temperature of the furnace chamber 2 in the heating section meets the product requirements.

[0154] Furthermore, the temperature detection structure 11 is disposed close to the heating element 8.

[0155] Using the above technical solution, the temperature detection structure 11 is arranged close to the heating element 8 to detect the temperature at the heating element 8. Since the heating element 8 heats the heating section furnace 2 to achieve the temperature rise of the heating section furnace 2, the temperature at the heating element 8 can be indirectly derived from the temperature at the heating element 8. It is only necessary to consider the heat loss during the process of heat generation by the heating element 8 being conducted to the heating section furnace 2. If the heat loss during the process of heat generation by the heating element 8 being conducted to the heating section furnace 2 is very small, the temperature at the heating element 8 can be indirectly equal to the temperature at the heating section furnace 2.

[0156] Specifically, the temperature detection structure 11 is disposed within the heating element receiving cavity 9.

[0157] See Figures 1 to 3 A mesh belt sintering furnace includes the aforementioned mesh belt sintering furnace heating section unit 100.

[0158] By adopting the above technical solution, the mesh belt sintering furnace is made more reasonable. Since the heating section unit 100 of the mesh belt sintering furnace is used, the oxides decomposed by the lubricant will drip into the accumulation space 3 through the connecting channel 401, which greatly reduces the oxide residue at the bottom of the heating section furnace 2, and avoids the accumulation of oxides at the bottom of the heating section furnace 2 from affecting the operation of mesh belt a, thus ensuring the stable and reliable operation of mesh belt a.

[0159] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0160] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A mesh belt sintering furnace heating section unit, which is located between a mesh belt sintering furnace dewaxing section unit (300) and a mesh belt sintering furnace high temperature section unit, characterized in that: The system includes a heating section body (1), which has a heating section furnace (2) for conveying a mesh belt (a) along its length. The heating section body (1) also has a stacking space (3) located below the heating section furnace (2). The portion between the heating section furnace (2) and the stacking space (3) forms a connecting part (4). The connecting part (4) has a connecting channel (401) for connecting the heating section furnace (2) and the stacking space (3). The portion of the connecting part (4) without the connecting channel (401) forms a mesh belt support part (402). The side of the mesh belt support part (402) facing the heating section furnace (2) is used to support the mesh belt (a).

2. The mesh belt sintering furnace warm-up section unit according to claim 1, characterized by: The connecting part (4) is provided with a plurality of spaced communication channels (401). The connecting channel (401) extends along the length of the heating section body (1), and the mesh belt support (402) extends along the length of the heating section body (1). Along the height direction of the main body (1) of the heating section, the connecting channel (401) is vertically arranged; The stacking space (3) is located near the bottom surface of the heating section furnace (2); The mesh belt support (402) is arranged in a planar manner on the side facing the heating section furnace (2).

3. The mesh belt sintering furnace warm-up section unit of claim 1, wherein: Multiple stacking spaces (3) are provided, and along the length direction of the heating section body (1), multiple stacking spaces (3) are spaced apart below the heating section furnace (2).

4. The mesh belt sintering furnace warm-up section unit of claim 2, wherein: The connecting part (4) includes a connecting port (403) and a plurality of support pipes (404). The connecting port (403) is located between the heating section furnace (2) and the stacking space (3). The side of the connecting port (403) facing the heating section furnace (2) is connected to the bottom of the heating section furnace (2). The side of the connecting port (403) facing the stacking space (3) is connected to the top of the stacking space (3). The cross-section of the connecting port (403) matches the cross-section of the stacking space (3). The plurality of support pipes (404) are spaced apart at the connecting port (403). The two ends of the support pipes (404) are respectively connected to the two sides of the connecting port (403). The support pipes (404) form the mesh belt support part (402). The interval between two adjacent support pipes (404) forms the connecting channel (401). The support tube (404) extends along the length of the heating section body (1); The support tube (404) is a square tube and is made of silicon carbide material.

5. The mesh belt sintering furnace warm-up section unit of claim 3, wherein: The heating section body (1) is provided with a ash removal hole (5), and one end of the ash removal hole (5) extends toward the accumulation space (3) and connects with the accumulation space (3) to form an ash removal hole communication port (501), and the other side of the ash removal hole (5) extends toward the outside and connects with the outside to form an ash removal port (502). When there are multiple stacking spaces (3), the number of ash removal holes (5) matches the number of stacking spaces (3) and corresponds one-to-one.

6. The mesh belt sintering furnace warm-up section unit of claim 5, wherein: The ash removal hole (5) is provided on the side wall of the heating section body (1), and the location of the ash removal hole (5) matches the location of the accumulation space (3). The ash removal hole communication port (501) of the ash removal hole (5) is connected to the side wall of the accumulation space (3), and the ash removal port (502) of the ash removal hole (5) penetrates the side wall of the heating section body (1). The bottom surface of the ash removal hole (5) is coplanar with the bottom surface of the accumulation space (3), or the bottom surface of the ash removal hole (5) is lower than the bottom surface of the accumulation space (3); The ash removal port (502) is detachably provided with an ash removal hole cover (6), and the ash removal hole cover (6) can completely cover the ash removal port (502). The ash removal opening (502) of the ash removal hole (5) protrudes from the side wall of the heating section body (1). The ash removal hole (5) protrudes outward in the circumferential direction on the outer side of the ash removal opening (502) to form an installation fitting part (503). The ash removal hole cover (6) is placed on the ash removal opening (502), and the ash removal hole cover (6) is detachably connected to the installation fitting part (503).

7. The mesh belt sintering furnace warm-up section unit of claim 1, wherein: The main body (1) of the heating section is constructed using refractory bricks; The top of the heating section furnace (2) facing the dewaxing section unit (300) of the mesh belt sintering furnace is wrapped with a high-temperature resistant and dense insulating material (7). The isolation component (7) is made of stainless steel.

8. The mesh belt sintering furnace warm-up section unit of claim 1, wherein: Includes heating elements (8) capable of heating the furnace chamber (2) in the heating section; A heating element receiving cavity (9) is provided above the heating section furnace (2), and the heating element (8) is fixedly installed in the heating element receiving cavity (9); The bottom of the heating element receiving cavity (9) is connected to the top of the heating section furnace (2); The heating section unit (100) of the mesh belt sintering furnace also includes a separator (10) with good thermal conductivity. The separator (10) is disposed between the heating element receiving cavity (9) and the heating section furnace chamber (2) so that the heating element receiving cavity (9) and the heating section furnace chamber (2) are relatively independent in space. The partition (10) has a sheet-like structure and the partition (10) has an arc-shaped structure that bends toward the heating element receiving cavity (9); The heating element (8) includes a dense outer tube with good thermal conductivity and a heating element disposed inside the outer tube, wherein the outer tube is made of stainless steel; The separator (10) is made of silicon carbide.

9. The mesh belt sintering furnace warm-up section unit of claim 8, wherein: Includes a temperature detection structure (11) capable of detecting the temperature of the furnace chamber (2) in the heating section; The temperature detection structure (11) is disposed near the heating element (8); The temperature detection structure (11) uses a thermocouple.

10. A mesh belt sintering furnace characterized by: This includes the heating section unit (100) of the mesh belt sintering furnace as described in any one of claims 1 to 9.

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