Silicon carbide firing kiln

Abstract

The invention discloses a silicon carbide firing kiln, relates to the technical field of kiln parts, and solves the problems that a large amount of impurities are accumulated on the bottom surface of the inner side of a protective cover, so that the impurities accumulated on the bottom surface of the inner side of the protective cover possibly fall on a silicon carbide product through a through groove in the protective cover in the process of firing the silicon carbide product in the later period; the device comprises a kiln body, a protective cover is fixedly installed at the upper end of the kiln body, an exhaust pipe communicated with the protective cover is fixedly installed at the upper end of the protective cover, and a valve is installed on the exhaust pipe; by installing the filter assembly, the cleaning mechanism and the connecting assembly, a steel wire brush makes contact and rubs with the filter screen in the moving process of the filter screen, impurities filtered out of the filter screen can be brushed away, the filtered impurities can enter the water tank through an air blower to be adsorbed by water, and therefore the impurities cleaned down from the filter screen can be effectively prevented from being accumulated in the protective cover; the impurities are prevented from falling on the silicon carbide product to influence the quality.

Description

Technical Field

[0001] The invention relates to the technical field of kiln parts, in particular to a silicon carbide firing kiln. Background Art

[0002] Silicon carbide is made of quartz sand, petroleum coke (or coal coke), sawdust (salt is needed to produce green silicon carbide) and other raw materials through high-temperature smelting in a resistance furnace. The firing of silicon carbide products requires the use of silicon carbide shuttle kilns, light-body intermittent kilns, and heat storage silicon carbide high-temperature firing kilns. Among them, the silicon carbide shuttle kiln uses a ceramic heat exchanger to recover the heat in the flue in order to improve thermal efficiency. The recovered heat is used to heat the combustion air, dry or for other purposes. The inner lining of the kiln wall is all made of refractory fiber materials, which suppresses the heat storage and heat release of the kiln wall and improves the energy-saving effect.

[0003] In order to make the silicon carbide products in the kiln heated evenly, a shuttle kiln on the market has a protective cover installed in the kiln. The protective cover is provided with guide grooves and through grooves. The guide grooves allow the calcining gas moving upward to flow back, so that the material at the top of the kiln is heated more evenly. Since a high-temperature resistant stainless steel filter is installed on the inner side of the protective cover, the gas passing through the through groove will be filtered by the stainless steel filter to filter out solid particles in the gas. When cleaning the filter, the filter is pulled out of the kiln by the handle. During the movement of the filter, its lower end face will contact the rotary knife, and the rotary knife will remove impurities attached to the lower end face of the filter during the movement of the filter. However, since the rotary cutter is installed on the inner bottom surface of the protective cover, after the rotary cutter removes impurities attached to the lower end surface of the filter, the removed impurities will accumulate on the inner bottom surface of the protective cover, and the inner bottom surface of the protective cover in the kiln is a cleaning dead corner. A large amount of impurities are accumulated on the inner bottom surface of the protective cover, so that during the later firing process of the silicon carbide product, the impurities accumulated on the inner bottom surface of the protective cover may fall onto the silicon carbide product through the grooves on the protective cover, affecting the firing quality of the silicon carbide product. Summary of the invention

[0004] The object of the present invention is to provide a silicon carbide firing kiln to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A silicon carbide firing kiln comprises a kiln body, a protective cover is fixedly mounted on the upper end of the kiln body, an exhaust pipe connected to the protective cover is fixedly mounted on the upper end of the protective cover, and a valve is installed on the exhaust pipe, two symmetrically distributed through grooves are provided on the bottom surface of the inner wall of the protective cover, and the protective cover also comprises a filter assembly for filtering the gas generated during the firing of silicon carbide, the filter assembly is installed inside the protective cover; a cleaning mechanism for cleaning solid particles filtered out by the filter assembly, the cleaning mechanism is installed at the right end of the protective cover; a connecting assembly for connecting the filter assembly and the cleaning mechanism, the number of the connecting assemblies is two groups and they are symmetrically distributed, and the connecting assemblies are installed at both ends of the cleaning mechanism; a soot blowing assembly for blowing away floating soot on the inner bottom surface of the kiln body, the soot blowing assembly is installed at the rear end of the protective cover.

[0007] Preferably, the filter assembly includes a fixed frame installed inside the protective cover, a filter screen is fixedly embedded on the fixed frame, support rails are installed on the upper and lower sides of the fixed frame inside the protective cover, and the support rails are connected to the protective cover in a fixed manner, the support rails are used to position and support the filter assembly, a baffle is fixedly connected to the right end of the fixed frame, and the baffle is located on the right side of the protective cover, and a sealing gasket is fixedly adhered to the side of the baffle close to the fixed frame, and the sealing gasket can prevent gas leakage at the fixed frame.

[0008] Preferably, the fixed frame is provided with two symmetrically distributed beveled edges at one end close to the baffle, a hemispherical slot is provided on the beveled edge, and the hemispherical slot is close to the sealing gasket, and the cleaning mechanism includes two symmetrically distributed dust hoods installed on the right end of the protective cover, and the dust hood is used to collect impurities cleaned from the filter.

[0009] Preferably, the baffle is located between the two dust hoods, a fixing rod is fixedly installed on the inner side of the dust hood, a wire brush is fixedly installed on one side of the two fixing rods close to each other, and the wire brush can contact and rub with the filter during the movement of the filter, and a plurality of anti-slip blocks distributed at equal distances are fixedly installed on one side of the dust hood close to the protective cover.

[0010] Preferably, a spring 1 is fixedly installed on the side of the upper and lower anti-detachment blocks close to each other, and the end of the spring 1 away from the anti-detachment block is movably abutted against the protective cover, the anti-detachment block is used to prevent the dust hood from separating from the protective cover, and a dust suction pipe is fixedly embedded on the side of the two dust suction hoods away from each other, a suction port is opened on the dust suction pipe, and a conduit 1 connected to the conduit is fixedly installed on one end of the dust suction pipe, and the two conduits 1 are staggered.

[0011] Preferably, the end of the duct one away from the dust suction pipe is fixedly connected to a blower, and a duct two interconnected with the blower is fixedly installed at the air outlet of the blower, and the end of the duct two away from the blower is fixedly connected to a water tank, and the water tank is used to filter impurities in the gas, and a sewage pipe interconnected with the water tank is fixedly installed on the outside of the water tank, and the connecting assembly includes a top rod pluggably connected to the protective cover, and a hemispherical portion is provided at one end of the top rod close to the fixed frame, and the hemispherical portion of the top rod is movably connected to the fixed frame through the hemispherical slot.

[0012] Preferably, the end of the top rod away from the fixed frame is fixedly connected to a connecting seat, and the connecting seat is located on the outside of the protective cover, and two symmetrically distributed inclined rods are hingedly installed on the outside of the connecting seat, and the end of the inclined rod away from the connecting seat is hingedly installed with an articulated seat, and the connection between the articulated seat and the dust hood is a fixed connection, and the dust hood can move up and down on the outside of the protective cover.

[0013] Preferably, the sootblowing assembly includes a rectangular tube installed on the upper side of the water tank and communicated with the water tank, a main tube communicated with the water tank is fixedly installed on the upper end of the rectangular tube, a sub-pipe communicated with the water tank is fixedly installed on one end of the main tube away from the rectangular tube, a one-way valve is fixedly installed on the main tube, and the one-way valve can prevent the gas in the protective cover from entering the water tank through the main tube, a guide plate is installed inside the protective cover at the lower side of the filter assembly, and the guide plate is fixedly connected to the right side wall of the protective cover, and the left end face of the guide plate is V-shaped.

[0014] Preferably, a water-absorbing sponge is installed inside the rectangular tube, the front end of the water-absorbing sponge is fixedly bonded with an extrusion plate, and the rear end of the water-absorbing sponge is fixedly bonded to the rear side wall of the rectangular tube. The water-absorbing sponge can absorb moisture carried by the gas, and a sealing pad 2 is fixedly bonded to the side of the extrusion plate away from the water-absorbing sponge.

[0015] Preferably, two symmetrically distributed connecting rods are fixedly embedded on the side of the extrusion plate away from the water-absorbing sponge, and one end of the connecting rod away from the extrusion plate is fixedly connected to a pressing plate, and the pressing plate is located on the outside of the rectangular tube, and a spring 2 is movably sleeved on the outer side of the connecting rod, and the two ends of the spring 2 are respectively movably abutted against the rectangular tube and the pressing plate, and the spring 2 can drive the sealing pad 2 to fit the inner wall of the rectangular tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention installs a filter assembly, a cleaning mechanism and a connecting assembly. During the process of pulling out the filter plate in the filter assembly, the two wire brushes in the cleaning mechanism will be close to each other under the action of the connecting assembly and the bevel portion of the fixed frame, so that the wire brushes will contact and rub against the filter screen during the movement, and can brush off the impurities filtered out of the filter screen. The filtered impurities will enter the water tank through the blower and be absorbed by water, thereby effectively preventing the impurities cleaned from the filter screen from accumulating inside the protective cover and falling on the silicon carbide product, affecting its quality.

[0018] 2. The present invention installs a soot blowing assembly, and the diverter pipe in the soot blowing assembly guides the gas inside the water tank into the protective cover, which can blow out the floating dust that falls on the inner bottom surface of the protective cover. The inside of the protective cover can be cleaned while the filter is cleaned, which effectively solves the problem of inconvenience in cleaning dead corners inside the protective cover.

[0019] 3. The present invention installs a water-absorbing sponge. Since the gas entering the protective cover through the water tank contains moisture, the water-absorbing sponge can filter out the moisture in the gas, which can effectively prevent the gas containing moisture from entering the protective cover and prevent impurities from being damp and adhering to the inner wall of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is the left schematic diagram of the present invention;

[0022] Figure 3 It is a side cross-sectional schematic diagram of the protective cover of the present invention;

[0023] Figure 4 It is a schematic diagram of the cross section of the protective cover of the present invention and its separation from the filter assembly;

[0024] Figure 5 It is a schematic diagram of the connection between the cleaning mechanism and the connecting assembly of the present invention;

[0025] Figure 6 This is a schematic diagram of the cleaning mechanism of the present invention;

[0026] Figure 7 It is a side cross-sectional schematic diagram of the filter box of the present invention;

[0027] Figure 8 It is a schematic diagram of the connection between the water-absorbing sponge and the extrusion component of the present invention.

[0028] In the figure: 1. kiln body; 2. protective cover; 3. exhaust pipe; 4. through groove; 5. fixing frame; 6. filter screen; 7. support rail; 8. baffle; 9. sealing gasket 1; 10. bevel edge; 11. hemispherical slot; 12. dust cover; 13. fixing rod; 14. wire brush; 15. anti-slip block; 16. spring 1; 17. dust pipe; 18. suction port; 19. duct 1; 20. blower; 21. duct 2; 22. water tank; 23. guide plate; 24. top rod; 25. connecting seat; 26. inclined tie rod; 27. hinged seat; 28. rectangular tube; 29. ​​main pipe; 30. auxiliary pipe; 31. one-way valve; 32. water-absorbing sponge; 33. extrusion plate; 34. sealing gasket 2; 35. connecting rod; 36. pressing plate; 37. spring 2. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1 , Figure 2 , Figure 4-Figure 6 The figure shows a silicon carbide firing kiln, comprising a kiln body 1, a protective cover 2 is fixedly installed on the upper end of the kiln body 1, an exhaust pipe 3 connected with the protective cover 2 is fixedly installed on the upper end of the protective cover 2, and a valve is installed on the exhaust pipe 3, two symmetrically distributed through grooves 4 are provided on the bottom surface of the inner wall of the protective cover 2, and also comprises a filter component for filtering the gas generated during the firing of silicon carbide, and the filter component is installed inside the protective cover 2; a cleaning mechanism for cleaning the solid particles filtered out by the filter component, and the cleaning mechanism is installed at the right end of the protective cover 2; a connecting component for connecting the filter component and the cleaning mechanism, the number of connecting components is two groups, and they are symmetrically distributed, and the connecting components are installed at both ends of the cleaning mechanism; a soot blowing component for blowing away floating soot on the inner bottom surface of the kiln body 1, and the soot blowing component is installed at the rear end of the protective cover 2.

[0031] The filter assembly includes a fixed frame 5 installed inside the protective cover 2, and a filter screen 6 is fixedly embedded on the fixed frame 5. Support rails 7 are installed on the upper and lower sides of the fixed frame 5 inside the protective cover 2, and the connection between the support rails 7 and the protective cover 2 is a fixed connection. The support rails 7 are used to position and support the filter assembly. A baffle 8 is fixedly connected to the right end of the fixed frame 5, and the baffle 8 is located on the right side of the protective cover 2. A sealing gasket 9 is fixedly bonded to the side of the baffle 8 close to the fixed frame 5, and the sealing gasket 9 can prevent gas leakage at the fixed frame 5.

[0032] Two symmetrically distributed beveled edges 10 are provided at one end of the fixed frame 5 close to the baffle 8, a hemispherical slot 11 is opened on the beveled edge 10, and the hemispherical slot 11 is close to the sealing gasket 9. The cleaning mechanism includes two symmetrically distributed dust hoods 12 installed at the right end of the protective cover 2, and the dust hood 12 is used to collect impurities cleaned from the filter 6.

[0033] The baffle 8 is located between the two dust hoods 12. A fixing rod 13 is fixedly installed on the inner side of the dust hood 12. A wire brush 14 is fixedly installed on the side close to each other of the two fixing rods 13. The wire brush 14 can contact and rub with the filter 6 during the movement of the filter. A plurality of anti-slip blocks 15 distributed at equal distances are fixedly installed on the side of the dust hood 12 close to the protective cover 2.

[0034] A spring 16 is fixedly installed on the side where the upper and lower anti-stripping blocks 15 are close to each other, and the end of the spring 16 away from the anti-stripping block 15 is movably abutted against the protective cover 2. The anti-stripping block 15 is used to prevent the dust hood 12 from separating from the protective cover 2. A dust suction pipe 17 is fixedly embedded on the side where the two dust suction hoods 12 are away from each other. A suction port 18 is provided on the dust suction pipe 17. A conduit 19 connected to the conduit is fixedly installed at one end of the dust suction pipe 17, and the two conduits 19 are staggered.

[0035] One end of the duct 19 away from the dust suction pipe 17 is fixedly connected to the blower 20, and a duct 21 interconnected with the blower 20 is fixedly installed at the air outlet of the blower 20. One end of the duct 21 away from the blower 20 is fixedly connected to a water tank 22, and the water tank 22 is used to filter impurities in the gas. A sewage pipe interconnected with the water tank 22 is fixedly installed on the outer side of the water tank 22. The connecting assembly includes a push rod 24 that is plugged and unplugged with the protective cover 2. A hemispherical portion is provided at one end of the push rod 24 close to the fixed frame 5, and the hemispherical portion of the push rod 24 is movably connected to the fixed frame 5 through the hemispherical slot 11.

[0036] The end of the top rod 24 away from the fixed frame 5 is fixedly connected to a connecting seat 25, and the connecting seat 25 is located on the outside of the protective cover 2. Two symmetrically distributed inclined rods 26 are hingedly installed on the outside of the connecting seat 25. The end of the inclined rod 26 away from the connecting seat 25 is hingedly installed with an articulated seat 27, and the connection between the articulated seat 27 and the dust hood 12 is a fixed connection. The dust hood 12 can move up and down on the outside of the protective cover 2.

[0037] Working principle: During the process of firing the silicon carbide product in the kiln body 1, the flue gas in the kiln body 1 enters the protective cover 2 through the through slot 4, and after the solid particles in the flue gas are filtered out by the filter 6, the gas is discharged and recovered through the exhaust pipe 3;

[0038] When the filter 6 needs to be cleaned, the personnel use a machine or manually pull the filter 6 out of the protective cover 2. During the movement of the fixed frame 5, the hemispherical portion of the push rod 24 will move out of the hemispherical slot 11, and the two push rods 24 will move away from each other through the bevel portion 10 during the process of the fixed frame 5 moving out of the protective cover 2. At this time, under the action of the inclined rod 26, the two dust hoods 12 will approach each other. When the hemispherical portion of the push rod 24 is against the edge of the fixed frame 5, the two wire brushes 14 will fit the upper and lower end surfaces of the filter 6 respectively. , so that during the movement of the filter 6, the wire brush 14 will contact and rub with the filter 6, and can brush away the impurities filtered out of the outside of the filter 6, and the impurities brushed off from the filter 6 will be sucked into the dust suction pipe 17 through the dust suction cover 12, and then sent into the water tank 22 by the blower 20. Since the water tank 22 contains clean water, after the gas containing impurities enters the water tank 22, the liquid in the water tank 22 will absorb the impurities in the gas, thereby effectively preventing the impurities cleaned from the filter 6 from accumulating inside the protective cover 2 and falling on the silicon carbide product to affect its quality;

[0039] In the process of pushing the filter 6 into the protective cover 2, driven by the compression force of the spring 16, the push rod 24 will be inserted into the hemispherical slot 11 through the bevel portion 10, which not only enables the filter to be positioned through the fixed frame 5, but also helps to make the sealing gasket 9 fit the outer wall of the protective cover 2, thereby preventing gas leakage from the connection between the filter assembly and the protective cover 2.

[0040] Example 2: Please refer to Figure 2-Figure 4 The present embodiment further explains Example 1, the sootblowing assembly includes a rectangular tube 28 installed on the upper side of the water tank 22 and interconnected with the water tank 22, a main tube 29 interconnected with the rectangular tube 28 is fixedly installed on the upper end of the rectangular tube 28, a secondary tube 30 interconnected with the main tube 29 is fixedly installed at one end away from the rectangular tube 28, a one-way valve 31 is fixedly installed on the main tube 29, the one-way valve 31 can prevent the gas in the protective cover 2 from entering the water tank 22 through the main tube 29, so that the gas is discharged to the outside only through the filter 6, the interior of the protective cover 2 is located at the lower side of the filter assembly. The guide plate 23 is fixedly connected to the right side wall of the protective cover 2, and the left end face of the guide plate 23 is V-shaped.

[0041] In this embodiment: before cleaning the filter 6, the personnel need to close the valve of the exhaust pipe 3 first. During the process of plugging and unplugging the filter assembly, the floating dust in the impurities filtered out by the lower end of the filter plate 6 will fall on the inner bottom surface of the protective cover 2 due to vibration, and the gas that has filtered out impurities through the water tank 22 will enter the inside of the protective cover 2 through the diversion pipe and be blown out along the bottom surface of the protective cover 2. The floating dust that has fallen on the inner bottom surface of the protective cover 2 can be blown to the right end of the protective cover 2. The dust-containing gas will flow to the through grooves 4 on both sides through the guide of the guide plate 23 and be discharged. The inside of the protective cover 2 can be cleaned while the filter 6 is being cleaned, which effectively solves the problem of inconvenience in cleaning dead corners inside the protective cover 2.

[0042] Example 3: Please refer to Figure 7 , Figure 8 This embodiment further explains Example 2. Preferably, a water-absorbing sponge 32 is installed inside the rectangular tube 28, and the front end of the water-absorbing sponge 32 is fixedly adhered to a squeezing plate 33, and the rear end of the water-absorbing sponge 32 is fixedly adhered to the rear side wall of the rectangular tube 28. The water-absorbing sponge 32 can absorb moisture carried by the gas, and a sealing gasket 34 is fixedly adhered to the side of the squeezing plate 33 away from the water-absorbing sponge 32.

[0043] Two symmetrically distributed connecting rods 35 are fixedly embedded on the side of the extrusion plate 33 away from the water-absorbing sponge 32. One end of the connecting rod 35 away from the extrusion plate 33 is fixedly connected to a pressing plate 36, and the pressing plate 36 is located on the outside of the rectangular tube 28. A spring 2 37 is movably sleeved on the outer side of the connecting rod 35, and the two ends of the spring 2 37 are movably abutted against the rectangular tube 28 and the pressing plate 36 respectively. The spring 2 37 can drive the sealing gasket 2 34 to fit the inner wall of the rectangular tube 28, which can effectively prevent the gas containing moisture from entering the protective cover 2 and prevent impurities from getting damp and adhering to the inner wall of the protective cover 2.

[0044] In this embodiment, the gas filtered by the clean water in the water tank 22 will contain moisture. After the gas containing moisture enters the rectangular tube 28, it needs to pass through the water-absorbing sponge 32 before entering the main tube 29. The water-absorbing sponge 32 absorbs the moisture in the gas, which is conducive to keeping the gas entering the protective cover 2 dry.

[0045] When dealing with the moisture in the water-absorbing sponge 32, the personnel pushes the pressing plate 36 to make the squeezing plate 33 squeeze the water-absorbing sponge 32, so as to squeeze out the moisture in the water-absorbing sponge 32. After repeating several times, the personnel releases the pressing plate 36. At this time, driven by the compression force of the spring 2 37, the water-absorbing sponge 32 will quickly rebound and reset, and the sealing pad 2 34 will also fit the inner wall of the rectangular tube 28, so as to prevent gas leakage at the connection between the connecting rod 35 and the rectangular tube 28.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A silicon carbide firing kiln, comprising a kiln body (1), a protective cover (2) fixedly mounted on the upper end of the kiln body (1), an exhaust pipe (3) connected to the protective cover (2) fixedly mounted on the upper end of the protective cover (2), and a valve mounted on the exhaust pipe (3), two symmetrically distributed through grooves (4) are provided on the bottom surface of the inner wall of the protective cover (2), characterized in that: Also includes: A filter assembly, used for filtering the gas generated during the firing of silicon carbide, wherein the filter assembly is installed inside the protective cover (2); A cleaning mechanism, used for cleaning solid particles filtered out by the filter assembly, the cleaning mechanism being mounted on the right end of the protective cover (2); A connecting assembly, used to connect the filtering assembly and the cleaning mechanism, wherein the connecting assembly is provided in two groups and is symmetrically distributed, and the connecting assembly is installed at both ends of the cleaning mechanism; A soot blowing assembly is used to blow away floating soot on the inner bottom surface of the kiln body (1), and the soot blowing assembly is installed at the rear end of the protective cover (2).

2. A silicon carbide firing kiln according to claim 1, characterized in that: The filter assembly comprises a fixed frame (5) installed inside the protective cover (2), a filter screen (6) is fixedly embedded on the fixed frame (5), support rails (7) are installed on the upper and lower sides of the fixed frame (5) located inside the protective cover (2), and the connection between the support rails (7) and the protective cover (2) is a fixed connection, a baffle (8) is fixedly connected to the right end of the fixed frame (5), and the baffle (8) is located on the right side of the protective cover (2), and a sealing gasket (9) is fixedly bonded to the side of the baffle (8) close to the fixed frame (5).

3. A silicon carbide firing kiln according to claim 2, characterized in that: The fixed frame (5) is provided with two symmetrically distributed beveled edge portions (10) at one end close to the baffle (8), a hemispherical slot (11) is provided on the beveled edge portion (10), and the hemispherical slot (11) is close to the sealing gasket (9), and the cleaning mechanism comprises two symmetrically distributed dust hoods (12) installed at the right end of the protective cover (2).

4. A silicon carbide firing kiln according to claim 3, characterized in that: The baffle (8) is located between the two dust hoods (12), a fixing rod (13) is fixedly installed on the inner side of the dust hood (12), a wire brush (14) is fixedly installed on the side close to each other of the two fixing rods (13), and a plurality of anti-slip blocks (15) distributed at equal distances are fixedly installed on the side of the dust hood (12) close to the protective cover (2).

5. The silicon carbide firing kiln according to claim 4, characterized in that: A spring (16) is fixedly installed on the side of the upper and lower anti-slip blocks (15) close to each other, and the end of the spring (16) away from the anti-slip block (15) is movably abutted against the protective cover (2), and a dust suction pipe (17) is fixedly embedded on the side of the two dust suction covers (12) away from each other, and a suction port (18) is provided on the dust suction pipe (17), and a guide tube (19) connected to the guide tube (17) is fixedly installed on one end of the dust suction pipe (17), and the two guide tubes (19) are staggered.

6. The silicon carbide firing kiln according to claim 5, characterized in that: The end of the duct one (19) away from the dust suction pipe (17) is fixedly connected to a blower (20); the air outlet of the blower (20) is fixedly installed with a duct two (21) which is in communication with the duct two (21); the end of the duct two (21) away from the blower (20) is fixedly connected to a water tank (22); the outer side of the water tank (22) is fixedly installed with a sewage pipe which is in communication with the water tank; the connecting assembly comprises a push rod (24) which is pluggable and connected to the protective cover (2); a hemispherical portion is provided at one end of the push rod (24) close to the fixed frame (5); the hemispherical portion of the push rod (24) is movably connected to the fixed frame (5) through the hemispherical clamping groove (11).

7. The silicon carbide firing kiln according to claim 6, characterized in that: The end of the top rod (24) away from the fixed frame (5) is fixedly connected to a connecting seat (25), and the connecting seat (25) is located on the outside of the protective cover (2), and two symmetrically distributed inclined rods (26) are hingedly installed on the outside of the connecting seat (25), and the end of the inclined rod (26) away from the connecting seat (25) is hingedly installed with an articulated seat (27), and the connection between the articulated seat (27) and the dust hood (12) is a fixed connection.

8. The silicon carbide firing kiln according to claim 1, characterized in that: The sootblowing assembly comprises a rectangular tube (28) installed on the upper side of a water tank (22) and interconnected with the water tank (22); a main tube (29) interconnected with the rectangular tube (28) is fixedly installed on the upper end of the rectangular tube (28); a secondary tube (30) interconnected with the main tube (29) is fixedly installed at one end of the main tube (29) away from the rectangular tube (28); a one-way valve (31) is fixedly installed on the main tube (29); a guide plate (23) is installed inside the protective cover (2) at the lower side of the filter assembly, and the guide plate (23) is fixedly connected to the right side wall of the protective cover (2); and the left end face of the guide plate (23) is V-shaped.

9. The silicon carbide firing kiln according to claim 8, characterized in that: A water-absorbing sponge (32) is installed inside the rectangular tube (28), a front end of the water-absorbing sponge (32) is fixedly bonded with an extrusion plate (33), and a rear end of the water-absorbing sponge (32) is fixedly bonded to a rear side wall of the rectangular tube (28), and a sealing gasket 2 (34) is fixedly bonded to a side of the extrusion plate (33) away from the water-absorbing sponge (32).

10. The silicon carbide firing kiln according to claim 9, characterized in that: Two symmetrically distributed connecting rods (35) are fixedly embedded on the side of the squeezing plate (33) away from the water-absorbing sponge (32); one end of the connecting rod (35) away from the squeezing plate (33) is fixedly connected to a pressing plate (36), and the pressing plate (36) is located outside the rectangular tube (28); a second spring (37) is movably sleeved on the outside of the connecting rod (35), and the two ends of the second spring (37) are movably abutted against the rectangular tube (28) and the pressing plate (36) respectively.

Images