CN215842200U - Flue gas treatment device of gypsum calcining furnace - Google Patents
Flue gas treatment device of gypsum calcining furnace Download PDFInfo
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- CN215842200U CN215842200U CN202122097762.6U CN202122097762U CN215842200U CN 215842200 U CN215842200 U CN 215842200U CN 202122097762 U CN202122097762 U CN 202122097762U CN 215842200 U CN215842200 U CN 215842200U
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Abstract
The utility model discloses a flue gas treatment device of a gypsum calcining furnace, which comprises a device main body, wherein a first limiting cylinder is arranged in the center of the bottom of an inner cavity of the device main body, the bottom of the first limiting cylinder is communicated with an air inlet pipe, a dust filtering net is arranged on the side surface of the first limiting cylinder, a piston circular plate is arranged in the inner cavity of the device main body, a connecting rod is fixedly connected with the center of the piston circular plate, a second limiting cylinder is arranged in the center of the top of the device main body, a reset spring is arranged in the center of the top of the inner cavity of the second limiting cylinder, the bottom end of the reset spring is connected with a push plate, the push plate is fixedly connected with the top end of the connecting rod, the bottom end of the connecting rod is connected with the center of the top surface of the mounting circular plate, a high-temperature resistant brush is arranged on the side surface of the mounting circular plate, and the high-temperature resistant brush is abutted to the dust filtering net. Has the advantages that: the utility model can clean the dust attached to the dust filter screen on the premise of not adding an additional electric drive mechanism, thereby greatly reducing the cleaning and maintenance cost of the flue gas treatment device of the gypsum calcining furnace.
Description
Technical Field
The utility model relates to the technical field of flue gas treatment, in particular to a flue gas treatment device of a gypsum calcining furnace.
Background
Gypsum is an industrial material and a building material with wide application, the main component of the gypsum is calcium sulfate containing crystal water, in order to obtain calcium sulfate hemihydrate gypsum with gelling property, gypsum stone or industrial by-product gypsum is often introduced into a gypsum calcining furnace for calcining, the gypsum calcining furnace mainly utilizes direct contact between high-temperature hot flue gas and gypsum raw materials to finish calcining and dehydrating the materials, the high-temperature hot flue gas often contains dust and is directly discharged to pollute the atmospheric environment, and therefore, the gypsum calcining furnace is often provided with a flue gas treatment device of the gypsum calcining furnace for flue gas treatment.
Most of the traditional flue gas treatment devices of the gypsum calcining furnace use a dust filter screen to filter dust contained in the flue gas, but the surface of the dust filter screen is blocked by the dust after the dust filter screen is used for a period of time, thereby influencing the working efficiency of the flue gas treatment device of the gypsum calcining furnace, increasing the use cost of the gypsum calcining furnace by additionally arranging the electric drive cleaning mechanism to clean the dust attached to the dust filter screen, in addition, in order to prevent the water vapor containing sulfur dioxide in the flue gas from corroding the pipeline in the economizer, a desulfurization drying agent is often placed in the device, but the desulfurization drying agent needs to be replaced after being used for a period of time, the existing flue gas treatment device of the gypsum calcining furnace has to stop the device when the desulfurization drying agent is replaced, then, the device is disassembled and replaced, so that the working efficiency of the device is reduced, the operation is more complicated, and inconvenience is brought to replacement of the desulfurization drying agent for the flue gas treatment device of the gypsum calcining furnace.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a gypsum calcining furnace flue gas treatment device which has the advantages of cleaning dust attached to a dust filter screen on the premise of not adding an additional electric drive mechanism and facilitating workers to replace a desulfurization drying agent on the premise of not stopping the device, thereby solving the problems in the background art.
(II) technical scheme
In order to realize the advantages that the dust attached to the dust filter screen is cleaned on the premise of not adding an additional electric drive mechanism, and the desulfurization drying agent can be conveniently replaced by workers on the premise of not stopping the device, the utility model adopts the following specific technical scheme: a flue gas treatment device of a gypsum calcining furnace comprises a device main body, wherein a first limiting cylinder is arranged in the center of the bottom of an inner cavity of the device main body, an air inlet pipe is communicated with the center of the bottom of the first limiting cylinder, and the side surface of the first limit cylinder is provided with a dust filter screen, the inner cavity of the device main body is provided with a piston circular plate, and the center of the piston circular plate is fixedly connected with a connecting rod, the center of the top of the device main body is fixedly provided with a second limiting cylinder, the center of the top of the inner cavity of the second limiting cylinder is provided with a return spring, the bottom end of the reset spring is connected with a push plate, the center of the bottom surface of the push plate is fixedly connected with the top end of the connecting rod, the center of the top of the first limiting cylinder is provided with a sleeve, the bottom end of the connecting rod passes through the sleeve to be connected with the center of the top surface of the mounting circular plate, and the side surface of the mounting circular plate is provided with a high-temperature-resistant hairbrush, and the high-temperature-resistant hairbrush is abutted against the inner side surface of the dust filter screen.
Further, the top of the side face of the device main body is symmetrically provided with gas outlets, the gas outlets are communicated with one end of a communicating pipe, the other end of the communicating pipe is communicated with the inner cavity of the economizer, and the top face of the economizer is provided with an exhaust pipe.
Further, a plurality of outer barrel is evenly installed to device main part inner chamber bottom surface, and the outer barrel lateral wall has evenly seted up the first bleeder vent of a plurality of, electric telescopic handle is installed at outer barrel inner chamber top, and electric telescopic handle expansion end and inner tube top central authorities fixed connection, a plurality of second bleeder vent has evenly been seted up on the inner tube lateral wall.
Further, urceolus inner chamber bottom is provided with the fixed head, and the fixed head side has seted up the external screw thread, the internal thread has been seted up to urceolus inner wall bottom, and the internal thread twists with the external screw thread and connect each other, install the sealing washer on the fixed head, the seal groove has been seted up to the urceolus bottom, and has embedded the sealing washer in the seal groove, fixed head bottom surface fixed mounting has the handle.
Furthermore, a metal mesh frame is fixedly arranged on the top surface of the fixing head, and a desulfurization drying agent is filled in the metal mesh frame.
Furthermore, a piston ring is sleeved on the side surface of the circular plate of the piston.
Furthermore, a limiting block is installed at the bottom end of the inner wall of the second limiting cylinder.
(III) advantageous effects
Compared with the prior art, the utility model provides a flue gas treatment device of a gypsum calcining furnace, which has the following beneficial effects:
(1) when the device is used, flue gas in the gypsum calcining furnace enters the inner cavity of the first limiting cylinder arranged in the center of the inner cavity of the device main body through the air inlet pipe, dust in the flue gas is filtered through the dust filtering net arranged on the side surface of the first limiting cylinder and then enters the inner cavity of the device main body, the piston circular plate can be pushed to move downwards along with the gradual increase of the air pressure in the inner cavity of the device main body, the piston circular plate can drive the installation circular plate in the first limiting cylinder and the push plate in the second limiting cylinder to synchronously move upwards through the connecting rod when moving upwards, the high-temperature resistant hairbrush arranged on the side surface of the installation circular plate can clean dust attached to the inner side of the dust filtering net, the reset spring connected with the top of the push plate is compressed, and when the piston circular plate is pushed to be above the air outlets arranged on the two sides of the top of the device main body, the high-pressure gypsum calcining furnace in the inner cavity of the device main body can rapidly enter the air outlets, the high-temperature dust removing device comprises a dust filtering net, a dust removing plate, a push plate, a connecting rod, a return spring, a connecting rod, a connecting pipe, a connecting rod, a piston circular plate, a mounting circular plate, a piston circular plate, a return spring, a high-temperature-resistant brush, a dust filtering net, a dust removing mechanism and a dust collecting mechanism, wherein the connecting pipe is communicated with an air outlet, the communicating pipe is communicated with the air outlet, the heat in high-temperature smoke enters the economizer and is recovered, the smoke of a gypsum calcining furnace passing through the economizer is discharged through the exhaust pipe at last, the air pressure in an inner cavity of a device body can be rapidly reduced in a short time, the push plate can drive the piston circular plate and the mounting circular plate to move downwards and reset through the connecting rod under the elastic action of the return spring, the high-temperature-resistant brush mounted on the side face of the mounting circular plate can clean dust attached to the dust on the dust filtering net again, and the dust on the premise that no extra electric driving mechanism is added, and the dust on the dust filtering net can be removed, and the smoke treating device of the gypsum calcining furnace can be greatly reduced.
(2) When the desulfurization drying agent fails, a worker can start an electric telescopic rod arranged at the top of the inner cavity of the outer cylinder to push the inner cylinder to move downwards so that the first air holes on the outer cylinder and the second air holes on the inner cylinder are staggered mutually, the inner cavities of the outer cylinder and the inner cylinder are in an isolated state with the inner cavity of the device body, then the worker holds a handle arranged on the bottom surface of a fixing head to rotate, an external thread on the fixing head and an internal thread on the inner side of the outer cylinder are unscrewed and separated, and the fixing head can be communicated with the metal mesh frame and the failed desulfurization drying agent to be taken down, the worker can finish the reinstallation and the use of the desulfurization drying agent by performing reverse operation according to the steps after replacing the new desulfurization drying agent, and the invalid desulfurization drying agent is replaced one by one according to the method, so that the operation is simple and convenient, the normal operation of the device is not required to be stopped, and the working efficiency of the flue gas treatment device of the gypsum calcining furnace is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a flue gas treatment device of a gypsum calcining furnace according to an embodiment of the utility model;
FIG. 2 is a perspective view of a piston circular plate of a flue gas treatment device of a gypsum calcining furnace according to an embodiment of the utility model;
FIG. 3 is an enlarged view at A of FIG. 1 according to an embodiment of the present invention;
fig. 4 is an enlarged view at B of fig. 1 according to an embodiment of the present invention.
In the figure:
1. an air inlet pipe; 2. a device main body; 3. a first limiting cylinder; 4. a dust filter screen; 5. a piston circular plate; 6. a connecting rod; 7. a sleeve; 8. mounting a circular plate; 9. a second limiting cylinder; 10. a return spring; 11. pushing the plate; 12. a limiting block; 13. an air outlet; 14. a communicating pipe; 15. a coal economizer; 16. an exhaust pipe; 17. an outer cylinder; 18. a piston ring; 19. a high temperature resistant brush; 20. an electric telescopic rod; 21. a first air vent; 22. an inner barrel; 23. a second air hole; 24. a metal mesh frame; 25. a desulfurization desiccant; 26. a fixed head; 27. an external thread; 28. an internal thread; 29. a sealing groove; 30. a seal ring; 31. a handle.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to the embodiment of the utility model, a flue gas treatment device of a gypsum calcining furnace is provided.
Referring to the drawings and the detailed description, the utility model is further explained, as shown in fig. 1-4, a flue gas treatment device of a gypsum calcining furnace according to an embodiment of the utility model comprises a device main body 2, a first limiting cylinder 3 is installed at the center of the bottom of an inner cavity of the device main body 2, an air inlet pipe 1 is communicated with the center of the bottom of the first limiting cylinder 3, a dust filter screen 4 is installed on the side surface of the first limiting cylinder 3, a piston circular plate 5 is installed in the inner cavity of the device main body 2, a connecting rod 6 is fixedly connected to the center of the piston circular plate 5, a second limiting cylinder 9 is fixedly installed at the center of the top of the device main body 2, a return spring 10 is installed at the center of the top of the inner cavity of the second limiting cylinder 9, a push plate 11 is connected to the bottom end of the return spring 10, the center of the bottom surface of the push plate 11 is fixedly connected to the top end of the connecting rod 6, a sleeve 7 is installed at the center of the top of the first limiting cylinder 3, the bottom end of the connecting rod 6 passes through the sleeve 7 and is connected to the center of the top surface of the mounting circular plate 8, 8 side-mounting of installation plectane has high temperature resistant brush 19, and high temperature resistant brush 19 and the inboard side looks butt of dirt filtrating screen 4, high temperature resistant brush 19 and dirt filtrating screen 4 are current mature technology, no longer give unnecessary details here, have played under the prerequisite of not adding extra electric drive mechanism, clear up the effect of the clearance maintenance cost of a greatly reduced gypsum calciner flue gas treatment device to attaching to dirt filtrating screen 4 dust.
In one embodiment, the top of the side surface of the device main body 2 is symmetrically provided with gas outlets 13, the gas outlets 13 are communicated with one end of a communicating pipe 14, the other end of the communicating pipe 14 is communicated with the inner cavity of an economizer 15, the top surface of the economizer 15 is provided with a gas exhaust pipe 16, the economizer 15 is a mature technology in the prior art, and is not described herein again, and the economizer plays a role in recovering heat in high-temperature flue gas.
In one embodiment, a plurality of outer cylinders 17 are uniformly installed on the bottom surface of the inner cavity of the device body 2, a plurality of first air holes 21 are uniformly formed in the side wall of the outer cylinder 17, an electric telescopic rod 20 is installed on the top of the inner cavity of the outer cylinder 17, the movable end of the electric telescopic rod 20 is fixedly connected with the center of the top of the inner cylinder 22, a plurality of second air holes 23 are uniformly formed in the side wall of the inner cylinder 22, the electric telescopic rod 20 is a mature technology in the prior art, and no further description is given here, and the effects of keeping the inner cavities of the outer cylinder 17 and the inner cylinder 22 and the inner cavity of the device body 2 in an isolated state when the desulfurization drying agent 25 is replaced are achieved, so that the normal operation of the device is not required to be stopped, and the working efficiency of the flue gas treatment device of the gypsum calcining furnace is ensured.
In one embodiment, a fixing head 26 is disposed at the bottom end of the inner cavity of the outer cylinder 17, an external thread 27 is disposed on the side of the fixing head 26, an internal thread 28 is disposed at the bottom end of the inner wall of the outer cylinder 17, the internal thread 28 and the external thread 27 are screwed together, a sealing ring 30 is disposed on the fixing head 26, a sealing groove 29 is disposed at the bottom end of the outer cylinder 17, the sealing ring 30 is embedded in the sealing groove 29, and a handle 31 is fixedly disposed on the bottom surface of the fixing head 26, so as to facilitate a worker to replace, reinstall and use the desulfurization desiccant 25.
In one embodiment, the top surface of the fixing head 26 is fixedly provided with a metal mesh frame 24, and the metal mesh frame 24 is filled with a desulfurization desiccant 25, the desulfurization desiccant 25 is a mature technology in the prior art, and is not described herein again, so as to remove water vapor containing sulfur dioxide in flue gas, and effectively prevent the pipeline in the economizer 15 from being corroded.
In one embodiment, the piston circular plate 5 is sleeved with a piston ring 18, and the piston ring 18 is a mature technology in the prior art and is not described in detail herein.
In one embodiment, the bottom end of the inner wall of the second limiting cylinder 9 is provided with a limiting block 12, which plays a role in limiting the moving range of the push plate 11.
The working principle is as follows: the utility model is provided with a piston circular plate 5, when in use, flue gas in a gypsum calcining furnace enters an inner cavity of a first limiting cylinder 3 arranged at the center of an inner cavity of a device main body 2 through an air inlet pipe 1, and enters the inner cavity of the device main body 2 after dust in the flue gas is filtered through a dust filtering net 4 arranged on the side surface of the first limiting cylinder 3, the piston circular plate 5 can be pushed to move downwards along with the gradual increase of air pressure in the inner cavity of the device main body 2, when the piston circular plate 5 moves upwards, a mounting circular plate 8 in the first limiting cylinder 3 and a push plate 11 in a second limiting cylinder 9 are driven to move upwards synchronously through a connecting rod 6, a high-temperature resistant brush 19 arranged on the side surface of the mounting circular plate 8 can be used for cleaning dust attached to the inner side of the dust filtering net 4, a return spring 10 connected with the top of the push plate 11 is compressed, when the piston circular plate 5 is pushed to be above an air outlet 13 arranged on two sides of the top of the device main body 2, the flue gas of the high-pressure gypsum calcining furnace in the inner cavity of the device main body 2 can rapidly enter the air outlet 13 and enter the economizer 15 through the communicating pipe 14 communicated with the air outlet 13 to recover the heat in the high-temperature flue gas, the flue gas of the gypsum calcining furnace passing through the economizer 15 is finally discharged through the exhaust pipe 16, at the moment, the air pressure in the inner cavity of the device main body 2 can rapidly drop in a short time, the push plate 11 can drive the piston circular plate 5 and the mounting circular plate 8 to move downwards and reset through the connecting rod 6 under the elastic action of the reset spring 10, the high-temperature resistant hairbrush 19 arranged on the side surface of the mounting circular plate 8 can clean the dust attached to the inner side of the dust filtering net 4 again, the cleaned gypsum dust can fall back into the gypsum calcining furnace through the air inlet pipe 1, and the circulation is repeated, so that the dust attached to the dust filtering net 4 can be cleaned on the premise of not adding an additional electric drive mechanism, in addition, the utility model is provided with a plurality of outer cylinders 17 and inner cylinders 22, when the flue gas of the gypsum calcining furnace enters the inner cavity of the device main body 2, the flue gas can fully contact with the desulfurization drying agent 25 positioned in the metal mesh frame 24 through the first vent holes 21 on the outer cylinders 17 and the second vent holes 23 on the inner cylinders 22 to remove the water vapor containing sulfur dioxide in the flue gas, thereby effectively preventing the pipeline in the coal economizer 15 from being corroded, when the desulfurization drying agent 25 fails, a worker can start the electric telescopic rod 20 arranged at the top of the inner cavity of the outer cylinders 17 to push the inner cylinders 22 to move downwards, so that the first vent holes 21 on the outer cylinders 17 and the second vent holes 23 on the inner cylinders 22 are staggered with each other, at the moment, the inner cavities of the outer cylinders 17 and the inner cylinders 22 are in an isolated state with the inner cavity of the device main body 2, and then the worker holds the handle 31 arranged at the bottom of the fixed head 26 to rotate, the external thread 27 on the fixed head 26 and the internal thread 28 on the inner side of the outer cylinder 17 are unscrewed and separated, so that the fixed head 26 can be communicated with the metal mesh frame 24 and the invalid desulfurization desiccant 25 to be taken down, a worker can complete the reinstallation and use of the desulfurization desiccant 25 by performing reverse operation according to the steps after replacing the new desulfurization desiccant 25, the invalid desulfurization desiccant 25 is replaced one by one according to the method, the operation is simple and convenient, the normal operation of the device is not required to be stopped, and the working efficiency of the flue gas treatment device of the gypsum calcining furnace is ensured.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The flue gas treatment device of the gypsum calcining furnace comprises a device main body (2) and is characterized in that a first limiting cylinder (3) is installed in the center of the bottom of an inner cavity of the device main body (2), an air inlet pipe (1) is communicated with the center of the bottom of the first limiting cylinder (3), a dust filtering net (4) is installed on the side surface of the first limiting cylinder (3), a piston circular plate (5) is installed in the inner cavity of the device main body (2), a connecting rod (6) is fixedly connected with the center of the piston circular plate (5), a second limiting cylinder (9) is fixedly installed in the center of the top of the device main body (2), a reset spring (10) is installed in the center of the top of the inner cavity of the second limiting cylinder (9), a push plate (11) is connected with the bottom end of the reset spring (10), the center of the bottom surface of the push plate (11) is fixedly connected with the top end of the connecting rod (6), and a sleeve (7) is installed in the center of the top of the first limiting cylinder (3), the bottom end of the connecting rod (6) penetrates through the sleeve (7) to be connected with the top surface center of the mounting circular plate (8), the side surface of the mounting circular plate (8) is provided with a high-temperature-resistant brush (19), and the high-temperature-resistant brush (19) is abutted to the inner side surface of the dust filtering net (4).
2. The flue gas treatment device of the gypsum calcining furnace as claimed in claim 1, wherein the top of the side surface of the device main body (2) is symmetrically provided with gas outlets (13), the gas outlets (13) are communicated with one end of a communicating pipe (14), the other end of the communicating pipe (14) is communicated with the inner cavity of an economizer (15), and the top surface of the economizer (15) is provided with an exhaust pipe (16).
3. The flue gas treatment device of the gypsum calcining furnace as claimed in claim 1, wherein a plurality of outer cylinders (17) are uniformly installed on the bottom surface of the inner cavity of the device main body (2), a plurality of first air holes (21) are uniformly formed in the side walls of the outer cylinders (17), an electric telescopic rod (20) is installed on the top of the inner cavity of each outer cylinder (17), the movable end of the electric telescopic rod (20) is fixedly connected with the center of the top of the inner cylinder (22), and a plurality of second air holes (23) are uniformly formed in the side walls of the inner cylinder (22).
4. The flue gas treatment device of the gypsum calcining furnace as claimed in claim 3, wherein a fixing head (26) is arranged at the bottom end of the inner cavity of the outer cylinder (17), an external thread (27) is arranged on the side surface of the fixing head (26), an internal thread (28) is arranged at the bottom end of the inner wall of the outer cylinder (17), the internal thread (28) and the external thread (27) are screwed with each other, a sealing ring (30) is installed on the fixing head (26), a sealing groove (29) is arranged at the bottom end of the outer cylinder (17), the sealing ring (30) is embedded in the sealing groove (29), and a handle (31) is fixedly installed at the bottom surface of the fixing head (26).
5. The flue gas treatment device of the gypsum calcining furnace according to claim 4, wherein the top surface of the fixed head (26) is fixedly provided with a metal mesh frame (24), and the metal mesh frame (24) is filled with a desulfurization drying agent (25).
6. The flue gas treatment device of the gypsum calcining furnace as claimed in claim 1, wherein the side of the piston circular plate (5) is sleeved with a piston ring (18).
7. The flue gas treatment device of the gypsum calcining furnace as claimed in claim 1, wherein the bottom end of the inner wall of the second limiting cylinder (9) is provided with a limiting block (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122097762.6U CN215842200U (en) | 2021-09-01 | 2021-09-01 | Flue gas treatment device of gypsum calcining furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122097762.6U CN215842200U (en) | 2021-09-01 | 2021-09-01 | Flue gas treatment device of gypsum calcining furnace |
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| CN215842200U true CN215842200U (en) | 2022-02-18 |
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| CN202122097762.6U Active CN215842200U (en) | 2021-09-01 | 2021-09-01 | Flue gas treatment device of gypsum calcining furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602262A (en) * | 2022-02-25 | 2022-06-10 | 徐州市宝盛新田农业机械有限公司 | Body-building apparatus plastic accessories processingequipment |
| CN114849374A (en) * | 2022-07-07 | 2022-08-05 | 徐州市富昌制药机械有限公司 | Dust removing device of vacuum drier |
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2021
- 2021-09-01 CN CN202122097762.6U patent/CN215842200U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602262A (en) * | 2022-02-25 | 2022-06-10 | 徐州市宝盛新田农业机械有限公司 | Body-building apparatus plastic accessories processingequipment |
| CN114849374A (en) * | 2022-07-07 | 2022-08-05 | 徐州市富昌制药机械有限公司 | Dust removing device of vacuum drier |
| CN114849374B (en) * | 2022-07-07 | 2022-10-18 | 徐州市富昌制药机械有限公司 | Dust removing device of vacuum drier |
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