CN220472247U - Air distribution plate vibrating device and belt type roasting machine - Google Patents
Air distribution plate vibrating device and belt type roasting machine Download PDFInfo
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- CN220472247U CN220472247U CN202321664038.XU CN202321664038U CN220472247U CN 220472247 U CN220472247 U CN 220472247U CN 202321664038 U CN202321664038 U CN 202321664038U CN 220472247 U CN220472247 U CN 220472247U
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- vibration
- air distribution
- distribution plate
- crank arm
- assembly
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- 238000009826 distribution Methods 0.000 title claims abstract description 78
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000000779 smoke Substances 0.000 claims description 27
- 238000013016 damping Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims 1
- 239000003517 fume Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 12
- 239000000428 dust Substances 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 229910052783 alkali metal Inorganic materials 0.000 description 5
- 150000001340 alkali metals Chemical class 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003197 gene knockdown Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Abstract
The application relates to the field of belt roasting machine equipment in the metallurgical industry, and particularly discloses an air distribution plate vibrating device and a belt roasting machine, wherein the air distribution plate vibrating device comprises a vibration bracket connected with an air distribution plate and a driving mechanism for controlling vibration of the vibration bracket; the driving mechanism comprises a vibrating motor, a crank arm assembly connected with the vibrating motor and a linkage supporting assembly connected with the crank arm assembly; the crank arm assembly is suitable for transmitting vibration force generated by the vibration motor to the linkage support assembly and controlling the linkage support assembly and the vibration motor to vibrate synchronously, the linkage support assembly supports the vibration bracket, and the linkage support assembly drives the air distribution plate to vibrate through the vibration bracket; the device replaces the operation modes of manual ash removal and acoustic wave ash removal in a mechanical vibration mode, so that the safety of ash removal operation is ensured, and the ash removal efficiency is improved.
Description
Technical Field
The application relates to the field of belt roasting machine equipment in the metallurgical industry, in particular to an air distribution plate vibrating device and a belt roasting machine.
Background
The air distribution plate of the pellet belt type roasting machine is positioned in the smoke hood, the air distribution plate is arranged at the elevation +14m on the upper part of the air draft drying section, the air distribution plate is used as a boundary, the upper part is the regenerative smoke at 320-340 ℃, the pressure is micro positive pressure, the lower part is the air draft smoke, the pressure is micro negative pressure, the air distribution plate is used for guiding the flow speed and distribution of the smoke, the air distribution plate is generally punched by a steel plate with the thickness of 4mm, the aperture of the air distribution hole on the air distribution plate is about 32mm, the regenerative smoke of the pellet belt type roasting machine contains K, na and other alkali metal components, the alkali metal is often attached to the air distribution plate when passing through the air distribution plate, the air distribution hole is blocked, the air permeability of the air distribution plate is seriously affected, and the production is affected.
Aiming at the technical problems, various modes are adopted for online cleaning in the processing field of the metallurgical industry, wherein the mode of adjusting the size of the air distribution hole diameter, adopting the mode of sonic ash removal and the like can not achieve better cleaning effect (the adhesive force of alkali metal on an air distribution plate is stronger);
therefore, some processing sites adopt the manual work to carry out the deashing operation, and the cleaning means of current use is the manual work and shakes and handle, and during the operation, opens the manhole under the production state, and the workman throws into inside the roasting machine petticoat pipe with the heavy object of iron chain of one end connection, causes the heavy impact to the air distribution board, plays the cleaning effect, but the inside air distribution board of petticoat pipe is in large numbers, and workman's construction environment is high temperature, and the clearance degree of difficulty is high, has the potential safety hazard, therefore, need to increase air distribution board rapping device to satisfy the requirement of online clearance.
Disclosure of Invention
The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, one purpose of the utility model is to provide a wind distribution plate vibrating device which can meet the requirements of safety and high efficiency of dust removal of the wind distribution plate.
Another object of the utility model is to propose a belt calciner with such a grid rapping device.
To achieve the above object, a first aspect of the present utility model provides a grid plate rapping device, which is mounted to a hood, the grid plate rapping device comprising:
the air distribution plate is arranged in the smoke hood;
the vibration bracket is in force transmission connection with the air distribution plate;
the driving mechanism is used for controlling the vibration of the vibration bracket and comprises a vibration source (preferably a vibration motor), a crank arm assembly in force transmission connection with the vibration source and a linkage support assembly connected with the crank arm assembly;
the vibration support is connected to the linkage support assembly, so that the linkage support assembly transmits vibration generated by the vibration source to the vibration support, and the vibration support drives the air distribution plate to vibrate.
Through above-mentioned technical scheme, this rapping device mainly adopts mechanical vibration's mode to reach the effect of air distribution board clearance, and the crank arm subassembly is similar to lever structure, and at the in-process of clearance, vibrating motor improves the holistic vibration amplitude of linkage supporting component through the crank arm subassembly, and the linkage supporting component drives vibration support and air distribution board and keeps carrying out higher high-frequency vibration of amplitude with vibrating motor unanimous frequency, and the in-process of vibration, the dust of the area alkali metal of adhesion on the air distribution board can drop fast, and the device replaces the operation mode of artifical deashing and sonic wave deashing through mechanical vibration's mode, has both guaranteed the security of deashing operation, has also improved deashing efficiency.
Preferably, the vibration direction of the linkage support assembly is perpendicular to the mounting surface on which the air distribution plate is positioned.
Through the technical scheme, the best mounting mode of the vibration support is to support the bottom of the air distribution plate, and when the linkage support assembly drives the air distribution plate to shake up and down in the mounting surface of the linkage support assembly through the vibration support, dust blocked in air distribution holes of the air distribution plate is easy to fall off, so that the ash removal effect is good.
Preferably, the surface of the air distribution plate is provided with an auxiliary ash removal component, the auxiliary ash removal component is opposite to the smoke inlet of the smoke hood, and the auxiliary ash removal component comprises a plurality of chains arranged on the surface of the air distribution plate.
Through above-mentioned technical scheme, because the mouth department dust of intaking of petticoat pipe is more, consequently, the position of supplementary deashing subassembly and the mouth of intaking of petticoat pipe is relative, and the convenience carries out the deashing operation with the position that intakes department corresponds on the air distribution board, and supplementary deashing subassembly mainly plays the effect of supplementary deashing, and when the air distribution board shakes from top to bottom in its installation face, air distribution board surface mounting's chain also can produce the shake, and the chain of shake can collide with the dust of air distribution board surface and the inboard top backlog of air distribution hole falls, further improves the deashing effect.
Preferably, the crank arm assembly comprises a first crank arm connected with the vibration motor, and a second crank arm connected with the first crank arm through a connector, wherein the first crank arm and the second crank arm are L-shaped.
Through above-mentioned technical scheme, after first crank arm and the concatenation of second crank arm are installed, crank arm subassembly is similar to the thick stick lever structure, and vibrating motor can prize the linkage supporting component at the one end of first crank arm when vibrating, and the whole vibration amplitude of linkage supporting component can be slightly enlarged to the crank arm subassembly to improve the vibration amplitude of air distribution plate.
Preferably, the linkage support assembly comprises an integrated support rod, one end of the integrated support rod is connected with the second crank arm, and the other end of the integrated support rod penetrates through the smoke hood and is connected with the vibration bracket.
Through above-mentioned technical scheme, linkage supporting component can adopt integral type bracing piece structure, and during the installation, the one end and the second turning arm of integral type bracing piece are connected, and the other end runs through the petticoat pipe and with vibration support connection can, and the holistic intensity of linkage supporting component is higher.
Preferably, the linkage support assembly comprises a plurality of sectional type support rods, the sectional type support rods are spliced through quick connectors to form a spliced type support rod, one end of the spliced type support rod is connected with the second crank arm, and the other end of the spliced type support rod penetrates through the smoke hood and is connected with the vibration support.
Through above-mentioned technical scheme, linkage supporting component adopts sectional type bracing piece structure, can change the whole length of linkage supporting component through sectional type bracing piece's quantity, and linkage supporting component's length adjustment is nimble, is fit for the different position installations in vibrating bracket bottom.
Preferably, a damping buffer mechanism is installed at the bottom of the vibration source (vibration motor), and comprises a first support beam fixedly installed, a spring installation seat arranged on the first support beam, a damping spring sleeved on the spring installation seat, and a second support beam installed at the top of the damping spring and supported by the damping spring;
wherein, vibrating motor installs on a second supporting beam, and the one end that first turning arm kept away from a second turning arm is connected with a second supporting beam.
Through the technical scheme, the damping buffer mechanism plays a damping buffer effect at the bottom of the vibrating motor, meanwhile, vibration space and vibration transmission force are provided for the first crank arm of the crank arm assembly, when the vibrating motor vibrates at high frequency, the second support beam at the bottom of the vibrating motor also can vibrate, the second support beam drives the first crank arm to vibrate synchronously, the damping spring at the bottom of the second support beam provides damping buffer force for the second support beam in the vibrating process, the second support beam can vibrate stably, in addition, the second support beam can be connected with a plurality of first crank arms, and one vibrating motor can ensure synchronous linkage of the plurality of first crank arms through the second support beam.
A second aspect of the present utility model proposes a belt calciner comprising a hood and a grid rapping device as described in the first aspect.
Preferably, the belt roasting machine further comprises: the plugging head is arranged on one side of the smoke hood, and comprises a first supporting sleeve fixedly connected with the smoke hood, a second supporting sleeve fixedly sleeved on the outer side of the crank arm assembly and an elastic buffer sleeve connected between the first supporting sleeve and the second supporting sleeve.
In conclusion, the beneficial technical effects of the application are as follows: the vibration motor of the air distribution plate vibrating device is arranged outside the fume hood of the roasting machine, no complex mechanism exists in the fume hood, the failure caused by high temperature and dust is effectively prevented, and meanwhile, the vibration amplitude and frequency are convenient to adjust;
the device replaces the operation modes of manual ash removal and acoustic wave ash removal in a mechanical vibration mode, so that the safety of ash removal operation is ensured, and the ash removal efficiency is improved.
Drawings
FIG. 1 is a schematic view of the mounting structure of a grid plate rapping device within a hood;
fig. 2 is a schematic side view of the air distribution plate rapping device after being mounted in cooperation with the fume hood;
fig. 3 is a schematic top view of the air distribution plate rapping device after being mounted in cooperation with the fume hood.
Reference numerals illustrate: 1. a wind distribution plate; 11. a smoke hood; 12. a smoke inlet; 2. a vibration support; 3. a vibration motor;
4. a crank arm assembly; 41. a first lever; 42. a second crank arm; 43. a joint;
5. a linkage support assembly; 51. a sectional support rod; 52. a quick connector;
6. an auxiliary ash removal assembly; 7. a blocking head; 71. a first support sleeve; 72. a second support sleeve; 73. an elastic buffer sleeve;
8. a damping buffer mechanism; 81. a first support beam; 82. a spring mounting base; 83. a damping spring; 84. and a second support beam.
Detailed Description
The advantages and various effects of the present utility model will be more clearly apparent from the following detailed description and examples. It will be understood by those skilled in the art that these specific embodiments and examples are intended to illustrate the utility model, not to limit the utility model.
Referring to fig. 1, a wind plate vibrator comprises a wind plate 1, a vibration bracket 2 connected with the wind plate 1, and a driving mechanism for controlling the vibration of the vibration bracket 2, wherein the wind plate vibrator is mainly used for ash cleaning treatment of the wind plate 1, and the wind plate 1 is arranged in a smoke hood 11;
further, the driving mechanism comprises a vibration source, preferably a vibration motor 3, a crank arm assembly 4 connected with the vibration motor 3 and a linkage support assembly 5 connected with the crank arm assembly 4;
the crank arm assembly 4 is used for transmitting vibration force generated by the vibration motor 3 to the linkage support assembly 5 and controlling the linkage support assembly 5 and the vibration motor 3 to vibrate synchronously;
simultaneously, the linkage supporting component 5 supports the bottom at the vibration support 2, and the linkage supporting component 5 drives the air distribution plate 1 to vibrate through the vibration support 2.
The vibration device mainly adopts a mechanical vibration mode to achieve the cleaning effect of the air distribution plate 1, the crank arm assembly 4 is similar to a lever structure, the vibration motor 3 improves the integral vibration amplitude of the linkage support assembly 5 through the crank arm assembly 4 in the cleaning process, the linkage support assembly 5 drives the vibration support 2 and the air distribution plate 1 to keep the frequency consistent with that of the vibration motor 3 to perform high-frequency vibration with higher amplitude, and in the vibration process, dust attached to the air distribution plate 1 and provided with alkali metal can fall rapidly.
The preferred mounting mode of vibration support 2 is the bottom that supports in grid plate 1, and the vibration direction of linkage supporting component 5 is perpendicular with the installation face that grid plate 1 is located, and when linkage supporting component 5 drove grid plate 1 through vibration support 2 in its installation face shake from top to bottom, the dust that blocks up in the wind hole of grid plate 1 drops relatively easily, and the deashing is effectual.
In addition, in order to achieve better ash removal effect, referring to fig. 2, fig. 3, the surface of the air distribution plate 1 is provided with an auxiliary ash removal assembly 6, the auxiliary ash removal assembly 6 is installed at the smoke inlet 12 of the smoke hood 11, the auxiliary ash removal assembly 6 comprises a plurality of chains installed on the surface of the air distribution plate 1, the chains are paved along the extending direction of the roasting machine, two ends of each chain are welded on the air distribution plate 1 by adopting round steel, the transverse interval between the two chains is 250mm, the auxiliary ash removal assembly 6 mainly plays the role of auxiliary ash removal, when the air distribution plate 1 shakes up and down in the installation surface of the air distribution plate 1, the chains installed on the surface of the air distribution plate 1 also shake, and the shaked chains can knock down dust on the surface of the air distribution plate 1 and the top of the inner side of the air distribution hole, so that the ash removal effect is further improved.
The following describes the specific working principle of the present application in detail with reference to the lever assembly 4 and the linkage support assembly 5:
referring to fig. 1 and 2, the lever assembly 4 includes a first lever 41 connected with the vibration motor 3, a second lever 42 connected with the first lever 41 through a joint 43, the first lever 41 and the second lever 42 are L-shaped, and it should be noted that the first lever 41 and the second lever 42 may be welded into an integral structure.
After the first crank arm 41 and the second crank arm 42 are spliced and installed, the crank arm assembly 4 is similar to a bar structure, when the vibrating motor 3 vibrates at one end of the first crank arm 41, the end part of the second crank arm 42 can pry the linkage support assembly 5, and the whole vibration amplitude of the linkage support assembly 5 can be slightly amplified by the crank arm assembly 4, so that the vibration amplitude of the air distribution plate 1 is improved.
The linkage support assembly 5 comprises a plurality of sectional support rods 51, the sectional support rods 51 are spliced through quick connectors 52 to form a spliced support rod, one end of the spliced support rod is connected with the second crank arm 42, and the other end of the spliced support rod penetrates through the smoke hood 11 and is connected with the vibration bracket 2;
the linkage supporting component adopts a sectional type supporting rod structure, the whole length of the linkage supporting component 5 can be changed through the number of the sectional type supporting rods 51, the length of the linkage supporting component 5 is flexibly adjusted, and the linkage supporting component is suitable for being installed at different positions at the bottom of the vibration bracket 2.
In addition, in order to prevent the fume leakage in the fume hood 11, a blocking head 7 is installed at one side of the fume hood 11, the blocking head 7 comprises a first supporting sleeve 71 fixedly connected with the fume hood 11, a second supporting sleeve 72 sleeved outside the second crank arm 42 and fixedly connected with the second crank arm 42, and an elastic buffer sleeve 73 connected between the first supporting sleeve 71 and the second supporting sleeve 72, wherein the spliced supporting rod and the second crank arm 42 penetrate through the first supporting sleeve 71, the second supporting sleeve 72 and the elastic buffer sleeve 73;
the blocking head 7 seals the contact position of the spliced supporting rod and the fume hood 11, and simultaneously has better elastic deflection, and the blocking head 7 is positioned at the position of the lower negative pressure section of the opening part on the fume hood 11 to prevent fume at the position from leaking.
As another embodiment of the application, the linkage support assembly 5 of the application can also be an integral support rod, one end of the integral support rod is connected with the second crank arm 42, the other end penetrates through the smoke hood 11 and is connected with the vibration bracket 2, and the integral strength of the linkage support assembly 5 is higher.
Further, the vibration motor 3 is provided with the vibration damping mechanism 8 at the bottom thereof, the vibration damping mechanism 8 comprises a first support beam 81 fixedly installed, a spring installation seat 82 arranged on the first support beam 81, a vibration damping spring 83 sleeved on the spring installation seat 82, and a second support beam 84 installed at the top of the vibration damping spring 83 and supported by the vibration damping spring 83, wherein the vibration motor 3 is installed on the second support beam 84, and one end of the first crank arm 41 far away from the second crank arm 42 is connected with the second support beam 84.
The damping buffer mechanism 8 plays a damping buffer role at the bottom of the vibrating motor 3 and simultaneously provides a vibrating space and a vibrating transmission force for the first crank arm 41 of the crank arm assembly 4, when the vibrating motor 3 vibrates at high frequency, the second support beam 84 at the bottom of the vibrating motor also can vibrate, the second support beam 84 drives the first crank arm 41 to vibrate synchronously, the damping spring 83 at the bottom of the second support beam 84 provides damping buffer force for the second support beam 84 in the vibrating process, the second support beam 84 can be guaranteed to vibrate stably, in addition, the second support beam 84 can be connected with a plurality of first crank arms 41, one vibrating motor 3 can guarantee synchronous linkage of a plurality of first crank arms 41 through the second support beam 84, that is, a plurality of crank arm assemblies 4 can be installed on the second support beam 84, in the ash cleaning process, the vibrating motor 3 can synchronously link through a plurality of crank arm assemblies 4 on the second support beam 84, the whole vibrating amplitude of the crank arm assemblies 4 is improved, the supporting assembly 5 drives the vibrating support frame 2 and the air distribution plate 1 to keep high frequency consistent with the vibrating motor 3, and the dust in the process of attaching alkali can fall down quickly.
In summary, the vibrating motor 3 of the air distribution plate vibrating device is arranged outside the fume hood 11 of the roasting machine, no complex mechanism exists in the fume hood 11, failure caused by high temperature and dust is effectively prevented, and meanwhile, vibration amplitude and frequency are conveniently adjusted;
moreover, one side of the fume hood 11 is provided with a blocking head 7, the blocking head 7 seals the contact position of the spliced support rod and the fume hood 11, and the blocking head 7 is positioned at the position of a negative pressure section below an opening part on the fume hood 11 to prevent fume at the position from leaking;
the device replaces the operation modes of manual ash removal and acoustic wave ash removal in a mechanical vibration mode, so that the safety of ash removal operation is ensured, and the ash removal efficiency is improved.
The following describes the belt roasting machine according to the embodiment of the present utility model, which includes the hood 11 and the air distribution plate rapping device of the above embodiment, and after the belt roasting machine adopts the air distribution plate rapping device of the above embodiment, the safety of the ash removal operation in the hood 11 is ensured, and the ash removal efficiency is also improved, so that the operational smoothness of the belt roasting machine is also indirectly improved.
Various modifications and alterations of this utility model may be made by those skilled in the art without departing from the spirit and scope of this utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. An air distribution plate rapping device mounted to a smoke cage, comprising:
the air distribution plate is arranged in the smoke hood;
the vibration bracket is in force transmission connection with the air distribution plate;
the driving mechanism is used for controlling the vibration of the vibration bracket and comprises a vibration source, a crank arm assembly in force transmission connection with the vibration source and a linkage support assembly connected with the crank arm assembly;
the vibration support is connected to the linkage support assembly, so that the linkage support assembly transmits vibration generated by the vibration source to the vibration support, and the vibration support drives the air distribution plate to vibrate.
2. The air distribution plate rapping device of claim 1, wherein the surface of the air distribution plate is provided with an auxiliary ash removal assembly.
3. The air distribution plate rapping device of claim 2, wherein the auxiliary ash removal assembly is positioned opposite the smoke inlet of the smoke cage.
4. The air distribution plate rapping device of claim 2, wherein said auxiliary ash removal assembly comprises a plurality of chains mounted to a surface of said air distribution plate.
5. The grid pattern rapping device of any of claims 1-4, wherein said lever assembly comprises a first lever connected to said vibration source and a second lever connected to the first lever by a joint; the first crank arm and the second crank arm are L-shaped.
6. The air distribution plate vibrating device according to claim 5, wherein the linkage support assembly is an integral support rod, one end of the integral support rod is connected with the second crank arm, and the other end of the integral support rod penetrates through the smoke hood and is connected with the vibration bracket;
or, the linkage supporting component is a spliced supporting rod, the spliced supporting rod is formed by splicing a plurality of sectional supporting rods through quick connectors, one end of the spliced supporting rod is connected with the second crank arm, and the other end of the spliced supporting rod penetrates through the smoke hood and is connected with the vibration bracket.
7. The air distribution plate rapping device of claim 5, wherein a shock absorbing buffer mechanism is mounted at the bottom of the vibration source.
8. The air distribution plate vibrating device according to claim 7, wherein the damping buffer mechanism comprises a first support beam fixedly installed, a spring installation seat arranged on the first support beam, a damping spring sleeved on the spring installation seat, and a second support beam installed on the top of the damping spring and supported by the damping spring;
the vibration source is arranged on the second supporting beam, and one end, far away from the second crank arm, of the first crank arm is connected with the second supporting beam.
9. A belt calciner comprising a hood and a grid rapping device as claimed in any one of claims 1 to 8.
10. The belt calciner of claim 9, further comprising: the plugging head is arranged on one side of the smoke hood, and comprises a first supporting sleeve fixedly connected with the smoke hood, a second supporting sleeve fixedly sleeved on the outer side of the crank arm assembly and an elastic buffer sleeve connected between the first supporting sleeve and the second supporting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321664038.XU CN220472247U (en) | 2023-06-28 | 2023-06-28 | Air distribution plate vibrating device and belt type roasting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321664038.XU CN220472247U (en) | 2023-06-28 | 2023-06-28 | Air distribution plate vibrating device and belt type roasting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220472247U true CN220472247U (en) | 2024-02-09 |
Family
ID=89780842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321664038.XU Active CN220472247U (en) | 2023-06-28 | 2023-06-28 | Air distribution plate vibrating device and belt type roasting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220472247U (en) |
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2023
- 2023-06-28 CN CN202321664038.XU patent/CN220472247U/en active Active
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