CN217448967U - Spray drier - Google Patents
Spray drier Download PDFInfo
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- CN217448967U CN217448967U CN202221943813.0U CN202221943813U CN217448967U CN 217448967 U CN217448967 U CN 217448967U CN 202221943813 U CN202221943813 U CN 202221943813U CN 217448967 U CN217448967 U CN 217448967U
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Abstract
The utility model discloses a spray dryer, a scraping device is arranged in a spray drying tower of the spray dryer, the scraping device is driven to rotate by a motor, a supporting vertical rod and a scraper of each scraping arm of the scraping device are convenient to be matched with a vertical surface of the inner wall of a drying main body part of the spray drying tower, a supporting oblique arm of each scraping arm is convenient to be matched with an inclined plane of the inner wall of the drying bottom of the spray drying tower, and an output shaft of the motor drives a central rotating shaft of the scraping device to rotate by a ball screw; in the spray drying process, the scraper which can drive the scraping device can move up and down relative to the spray drying tower, so that semi-wet materials, low-melting-point materials or powder which are adsorbed on the inner wall of the drying main body part of the spray drying tower can be scraped in a larger upper and lower area range, the semi-wet materials, low-melting-point materials or powder which are adsorbed on the inner wall of the spray drying tower in a larger area can be effectively removed, the loss of the materials is reduced, and the spray drying tower is simple in structure, convenient to install and low in cost.
Description
Technical Field
The utility model relates to an industrial drying equipment field, concretely relates to spray drier.
Background
A dryer is a mechanical device for reducing moisture of a material by using heat energy, and is used for performing a drying operation on the material, and the moisture (generally, moisture or other volatile liquid components) in the material is vaporized and escaped by heating so as to obtain a solid material with a specified moisture content, and the dryer is generally classified into an atmospheric dryer and a reduced pressure dryer.
The spray dryer is one of normal pressure dryers, can complete drying and granulation at the same time, and can adjust the pressure, flow and spray orifice size of the feed liquid pump according to the technological requirements to obtain the required spherical particles according to a certain size proportion. Spray dryers spray the liquid material into a mist which is dried by contact with hot air, and are commonly used for drying certain heat sensitive liquids, suspensions and viscous liquids, such as milk, eggs, tannins and pharmaceuticals, and also for drying fuels, intermediates, soap powders and inorganic salts. The spray dryer has simple and mild drying process, is suitable for industrial mass production, is used as a device for separating gas-solid system or liquid-solid system, and has wide application prospect in the industries of dairy products, food, chemistry, pharmacy and the like.
The existing spray drying device mainly comprises a spray drying tower, an atomizer, a cyclone separator, heating equipment and air filtering equipment, wherein the atomizer is used for atomizing feed liquid into fog drops with small diameters, water or other solvents in the feed liquid are rapidly evaporated in the process of direct contact with hot air or other heat media in the drying tower, the feed liquid is dried into a powdery product in a very short time and then is discharged to the cyclone separator from the drying tower, and gas-solid separation is realized, so that a dried product is obtained. Compared with other drying technologies, spray drying has the advantages of high drying speed, high yield, low destruction rate of effective components, good powder uniformity and the like, but in the spray drying process, semi-wet materials, low-melting-point materials or a large amount of powder and the like can be adsorbed on the inner walls of a spray drying chamber and a cyclone separator and are not easy to fall down, so that the discharging is difficult, the accumulation of the materials is increased, even a pipeline is blocked, the production is stopped, a large amount of time and raw materials are consumed, for the pharmaceutical industry, the price of the raw material is relatively high, so that the loss of an enterprise is greater, the requirements of enterprise production and social development cannot be met, and a lot of troubles are caused for industrial production.
At present, the spray drying device is mostly adopted to beat in the outside or to dehumidify in an internally-installed air supply device, so that the adhesion problem of the inner wall of the spray drying chamber and the cyclone separator is solved, the labor intensity is improved, the energy consumption is increased, and the removal effect of the adhesion materials is not ideal.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a spray dryer, in the spray drying process, can effectively get rid of the absorptive semi-wet material of spray drying tower inner wall, low melting point material or the powder of bigger region, reduced the loss of material to simple structure, simple to operate, it is with low costs.
In order to solve the technical problem, the spray dryer provided by the utility model comprises a spray drying tower, a scraping device, a ball screw and a motor;
the scraping and sweeping device comprises a central rotating shaft and N scraping and sweeping arms, wherein N is an integer greater than 1;
the scraping and sweeping arm comprises a supporting inclined arm, a supporting vertical rod and a scraper;
the scraper is fixedly assembled at the upper end of the supporting vertical rod;
the outer end of the supporting oblique arm is fixedly connected with the lower end of the supporting vertical rod;
the inner ends of the supporting oblique arms of the N scraping and sweeping arms are uniformly fixed to the upper end of the central rotating shaft along the circumferential direction of the central rotating shaft;
the axes of the vertical supporting rods of the N scraping and sweeping arms and the central rotating shaft are parallel;
the upper ends of the supporting inclined arms of the N scraping and sweeping arms are higher than the central rotating shaft, and the included angle between the supporting inclined arms and the axis of the central rotating shaft is 45-85 degrees;
the blade of the scraper faces to the side far away from the axis of the central rotating shaft;
the spray drying tower comprises a drying top cover, a drying main body part and a drying bottom which are sequentially connected together from top to bottom;
the side wall of the drying main body part is cylindrical;
the side wall of the drying bottom is in a frustum shape with a big top and a small bottom;
the scraping and sweeping devices are coaxially and fixedly arranged in the spray drying tower, and the supporting vertical rods and the scrapers of the N scraping and sweeping arms are positioned in the drying main body part;
the distances from the scraper blades of the N scraping arms to the side wall of the drying main body part are all smaller than a first distance;
the distances from the supporting inclined arms of the N scraping and sweeping arms to the side wall of the drying bottom are all larger than a first distance and smaller than a second distance;
the lower end of the central rotating shaft extends out of the lower part of the spray drying tower;
the upper end of a screw rod of the ball screw is coaxially and fixedly connected with a central rotating shaft of the scraping and sweeping device;
the nut of the ball screw is arranged below the spray drying tower;
the vertical position of the nut of the ball screw is fixed relative to the spray drying tower;
the nut of the ball screw can rotate around the vertical axis of the ball screw;
a nut of the ball screw is coaxially and fixedly connected with a hollow helical gear;
the hollow helical gear is sleeved outside a screw rod of the ball screw;
a transverse shaft helical gear is coaxially fixed on an output shaft of the motor;
through the meshing of the hollow helical gear and the transverse shaft helical gear, the output shaft of the motor drives the nut of the ball screw to rotate, so that the screw of the ball screw and the central rotating shaft of the scraping and sweeping device are driven to rotate and move up and down.
Preferably, N is 2, 3, 4 or 5;
the scraper is detachably and fixedly assembled at the upper end of the supporting vertical rod;
the first distance is 2mm and the second distance is 300 mm.
Preferably, the spray dryer further comprises an air supply device;
the air supply device is communicated to the inside of the top of the spray drying tower through a pipeline and is used for blowing dry hot air into the spray drying tower;
an atomizer is arranged at the top of the spray drying tower;
the atomizer is fixed on a drying top cover of the spray drying tower and is connected with external raw material solution through a liquid inlet pipe.
Preferably, the spray dryer further comprises a cyclone separator;
an air outlet is formed in the bottom of the spray drying tower;
the cyclone separator comprises a cyclone top cover, a cyclone main body part and a cyclone bottom which are sequentially connected together from top to bottom;
the side wall of the cyclone main body part is cylindrical;
the side wall of the bottom of the cyclone is in a frustum shape with a big top and a small bottom;
a feed inlet is formed in the side wall of the upper part of the cyclone main body part;
a feed opening is formed at the lower end of the bottom of the cyclone;
the first collecting bottle is connected with a feed opening of the cyclone separator through a first regulating valve;
and the air outlet of the spray drying tower is communicated with the feed inlet of the cyclone separator through a pipeline.
Preferably, the spray dryer further comprises a bag house;
the cyclone top cover of the cyclone separator is provided with an air outlet;
the filter bag chamber is communicated with the cyclone separator through a pipeline and an air outlet on the cyclone top cover;
a plurality of filter bags are arranged in the filter bag chamber;
the second collecting bottle is connected with a feed opening at the lower part of the filter bag chamber through a second regulating valve.
The utility model discloses a spray dryer, set up the device of sweeping in its spray drying tower, the device of sweeping is rotatory through motor drive, the support montant and the scraper of N scraping arms of the device of sweeping are convenient for and the dry main part inner wall vertical plane adaptation of spray drying tower, the support communications arm of N scraping arms is convenient for and the dry bottom inner wall inclined plane adaptation of spray drying tower, the output shaft of motor drives the central pivot of the device of sweeping through ball and rotates; when the output shaft of the motor rotates forwards, the central rotating shaft of the scraping and sweeping device rotates upwards; when the output shaft of the motor rotates reversely, the central rotating shaft of the scraping and sweeping device rotates and descends. In the spray drying process, the scraper which can drive the scraping device can move up and down relative to the spray drying tower, so that semi-wet materials, low-melting-point materials or powder which are adsorbed on the inner wall of the drying main body part of the spray drying tower can be scraped in a larger upper and lower area range, the semi-wet materials, low-melting-point materials or powder which are adsorbed on the inner wall of the spray drying tower in a larger area can be effectively removed, the loss of the materials is reduced, and the spray drying tower is simple in structure, convenient to install and low in cost.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the spray dryer of the present invention.
Description of reference numerals:
1, a spray drying tower; 4, a scraping device; 40 a central rotating shaft; 41 a sweeping arm; 410 support a tilt arm; 411 support the vertical rod; 421 a scraper; a motor 61; 5, an air supply device; 2, an atomizer; 3, a liquid inlet pipe; 6, a cyclone separator; 10 a first collection bottle; 91 a first regulating valve; 8, a bag filtering chamber; 11 a second collection bottle; 92 second regulating valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Materials, instruments, reagents and the like used in the following examples are commercially available unless otherwise specified. The technical means used in the examples are conventional means well known to those skilled in the art, unless otherwise specified.
The structures, proportions, sizes, and other dimensions shown in the drawings attached to the present specification are intended to be only illustrative of the principles of the invention, for those skilled in the art to understand and read, it is not intended to limit the practical conditions of the present invention, and therefore, it has no technical significance, and any structural modifications, changes in proportion or adjustments of size, without affecting the efficacy and the purpose of the utility model, the utility model still falls within the technical scope of the utility model, meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" are used in the specification for the sake of clarity only, and are not intended to limit the scope of the present invention, the changes and adjustments of the relative relationship can be realized without substantial technical changes.
Example one
As shown in fig. 1, the spray dryer includes a spray drying tower 1, a sweeping device 4, a ball screw, and a motor 61;
the scraping and sweeping device 4 comprises a central rotating shaft 40 and N scraping and sweeping arms 41, wherein N is an integer greater than 1;
the sweeping arm 41 comprises a supporting inclined arm 410, a supporting vertical rod 411 and a scraper 421;
the scraper 421 is fixedly assembled at the upper end of the vertical supporting rod 411;
the outer end of the supporting oblique arm 410 is fixedly connected with the lower end of the supporting vertical rod 411;
the inner ends of the supporting oblique arms 410 of the N sweeping arms 41 are uniformly fixed to the upper end of the central rotating shaft 40 along the circumferential direction of the central rotating shaft 40;
the axes of the vertical supporting rods 411 of the N sweeping arms 41 and the central rotating shaft 40 are parallel;
the upper ends of the supporting inclined arms 410 of the N scraping and sweeping arms 41 are higher than the central rotating shaft 40, and the included angle between the supporting inclined arms 410 and the axis of the central rotating shaft 40 is 45-85 degrees;
the cutting edge of the scraper 421 faces away from the axis side of the central rotating shaft 40;
the spray drying tower 1 comprises a drying top cover, a drying main body part and a drying bottom which are sequentially connected together from top to bottom;
the side wall of the drying main body part is cylindrical;
the side wall of the drying bottom is in a frustum shape with a big top and a small bottom;
the scraping and sweeping devices 4 are coaxially and fixedly arranged in the spray drying tower 1, and the supporting vertical rods 411 and the scrapers 421 of the N scraping and sweeping arms 41 are both positioned in the drying main body part;
the distances from the cutting edges of the scrapers 421 of the N scraping arms 41 to the side wall of the drying main body part are all smaller than a first distance;
the distances from the supporting oblique arms 410 of the N scraping arms 41 to the side wall of the drying bottom are all larger than a first distance and smaller than a second distance;
the lower end of the central rotating shaft 40 extends out to the lower part of the spray drying tower 1;
the upper end of the screw rod of the ball screw is coaxially and fixedly connected with a central rotating shaft 40 of the scraping and sweeping device 4;
the nut of the ball screw is arranged below the spray drying tower 1;
the vertical position of the nut of the ball screw is fixed relative to the spray drying tower 1;
the nut of the ball screw can rotate around the vertical axis of the ball screw;
a nut of the ball screw is coaxially and fixedly connected with a hollow helical gear;
the hollow helical gear is sleeved outside a screw rod of the ball screw;
a transverse shaft helical gear is coaxially fixed on an output shaft of the motor 61;
the output shaft of the motor 61 drives the nut of the ball screw to rotate by engaging the hollow helical gear with the transverse shaft helical gear, thereby driving the screw of the ball screw and the central rotating shaft 40 of the scraping and sweeping device 4 to rotate and move up and down.
Or, the vertical position of the screw rod of the ball screw is not changed, the nut of the ball screw is coaxially and fixedly connected with the central rotating shaft 40 of the sweeping device 4, and the output shaft of the motor 61 drives the screw rod of the ball screw to rotate through the driving assembly.
The ball screw is the most commonly used transmission element on tool machinery and precision machinery, and has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency. The ball screw is generally composed of a screw, a nut, a steel ball, a preforming piece, a reverser, and a dust catcher.
In the spray dryer according to the first embodiment, the scraping and sweeping device 4 is arranged in the spray drying tower 1, the scraping and sweeping device 4 is driven to rotate by the motor 61, the vertical supporting rods 411 and the scrapers 421 of the N scraping and sweeping arms 41 of the scraping and sweeping device 4 are conveniently adapted to the vertical surface of the inner wall of the drying main body part of the spray drying tower 1, the inclined supporting arms 410 of the N scraping and sweeping arms 41 are conveniently adapted to the inclined surface of the inner wall of the drying bottom part of the spray drying tower 1, and the output shaft of the motor 61 drives the central rotating shaft 40 of the scraping and sweeping device 4 to rotate by the ball screw; when the output shaft of the motor 61 rotates forward, the central rotating shaft 40 of the sweeping device 4 rotates upwards; when the output shaft of the motor 61 is rotated reversely, the central rotating shaft 40 of the squeegee device 4 is rotated downward. In the spray drying process, can drive the scraper 421 of scraping the device 4 and reciprocate relatively spray drying tower 1 to strike off the absorptive semi-moist material of dry main part inner wall, low melting point material or powder of spray drying tower 1 in the bigger upper and lower regional scope, can effectively get rid of the absorptive semi-moist material of the 1 inner wall of spray drying tower in bigger region, low melting point material or powder, the loss of material has been reduced, and simple structure, simple to operate, it is with low costs.
Example two
Based on the spray dryer of example one, N is 2, 3, 4 or 5. The number of the sweeping arms 41 can be correspondingly increased according to the sweeping efficiency requirement of the sweeping device 4, so that the sweeping area of the scraper 421 of the sweeping device 4 in unit time is increased.
Preferably, the scraper 421 can be detachably (for example, by being locked by a snap) and fixedly assembled on the upper end of the vertical support rod 411, so that the cleaning and the dismounting are simple, and the installation and the use are convenient.
Preferably, the first distance is 2mm and the second distance is 300 mm.
EXAMPLE III
Based on the first embodiment, the spray dryer further comprises an air supply device 5;
the air supply device 5 is communicated with the inside of the top of the spray drying tower 1 through a pipeline and is used for blowing dry hot air into the spray drying tower 1;
the top of the spray drying tower 1 is provided with an atomizer 2;
the atomizer 2 is fixed on a drying top cover of the spray drying tower 1 and is connected with external raw material solution through a liquid inlet pipe 3.
Example four
Based on the third embodiment, the spray dryer further comprises a cyclone separator 6;
the bottom of the spray drying tower 1 is provided with an air outlet;
the cyclone separator 6 comprises a cyclone top cover, a cyclone main body part and a cyclone bottom which are sequentially connected together from top to bottom;
the side wall of the cyclone main body part is cylindrical;
the side wall of the bottom of the cyclone is in a frustum shape with a large upper part and a small lower part;
a feed inlet is formed in the side wall of the upper part of the cyclone main body part;
a feed opening is formed at the lower end of the bottom of the cyclone;
the first collecting bottle 10 is connected with the feed opening of the cyclone separator 6 through a first regulating valve 91 (for example, a butterfly valve); when the first regulating valve 91 is in the on state, the material is discharged from the discharging opening of the cyclone separator 6, and when the first regulating valve 91 is in the off state, the material is gathered at the discharging opening of the cyclone separator 6 and can not be discharged.
And the air outlet of the spray drying tower 1 is communicated with the feed inlet of the cyclone separator 6 through a pipeline.
EXAMPLE five
According to the fourth embodiment, the spray dryer further comprises a filter bag house 8;
the cyclone top cover of the cyclone separator 6 is provided with an air outlet;
the bag filtering chamber 8 is communicated with the cyclone separator 6 through a pipeline and an air outlet on the cyclone top cover;
a plurality of filter bags are arranged in the filter bag chamber 8;
the second receiving flask 11 is connected to the lower part of the bag house 8 via a second regulating valve 92, for example a butterfly valve.
The spray dryer of example five operated as follows:
raw material solution to be dried enters an atomizer 2 arranged at the top of a spray drying tower 1 through a liquid inlet pipe 3, the atomizer 2 atomizes the raw material solution into ultrafine fog drops and uniformly sprays the ultrafine fog drops to the inside of the spray drying tower 1, an air supply device 5 blows filtered and heated dry hot air into the spray drying tower 1 to contact with the fog drops of the raw material solution and dry the raw material solution into granules, a motor 61 drives a scraping device 4 to rotate in the drying process, scrapers of scraping arms of the scraping device 4 close to the inner wall of the spray drying tower 1 scrape off adherent materials in the rotating process, the adherent materials enter the bottom of the spray drying tower 1 along with the hot air, and the adherent materials enter a cyclone separator 6 through a pipeline; the cyclone separator 6 further separates the wet air in the coarse product, the material enters the bottom of the cyclone separator 6 along with the hot air, and finally enters the first collecting bottle 10 through the first regulating valve 91 to complete the collection of the product; except the product that gets into first receiving flask 10, partly enter into filter bag room 8 in addition, filter bag room 8 has played the effect of retrieving remaining product and clean waste gas, and remaining product gets into second receiving flask 11 through second governing valve 92, has guaranteed the rate of recovery of product, can also guarantee that tail gas is clean simultaneously, prevents environmental pollution.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A spray dryer is characterized by comprising a spray drying tower (1), a sweeping device (4), a ball screw and a motor (61);
the scraping and sweeping device (4) comprises a central rotating shaft (40) and N scraping and sweeping arms (41), wherein N is an integer larger than 1;
the scraping and sweeping arm (41) comprises a supporting inclined arm (410), a supporting vertical rod (411) and a scraper (421);
the scraper (421) is fixedly assembled at the upper end of the supporting vertical rod (411);
the outer end of the supporting oblique arm (410) is fixedly connected with the lower end of the supporting vertical rod (411);
the inner ends of the supporting oblique arms (410) of the N scraping and sweeping arms (41) are uniformly fixed at the upper end of the central rotating shaft (40) along the circumferential direction of the central rotating shaft (40);
the axes of the vertical supporting rods (411) of the N scraping and sweeping arms (41) and the central rotating shaft (40) are parallel;
the upper ends of the supporting oblique arms (410) of the N scraping and sweeping arms (41) are higher than the central rotating shaft (40), and the included angles of the supporting oblique arms (410) and the axis of the central rotating shaft (40) are 45-85 degrees;
the cutting edge of the scraper (421) faces to the side far away from the axis of the central rotating shaft (40);
the spray drying tower (1) comprises a drying top cover, a drying main body part and a drying bottom which are sequentially connected together from top to bottom;
the side wall of the drying main body part is cylindrical;
the side wall of the drying bottom is in a frustum shape with a big top and a small bottom;
the scraping and sweeping devices (4) are coaxially and fixedly arranged in the spray drying tower (1), and the supporting vertical rods (411) and the scrapers (421) of the N scraping and sweeping arms (41) are both positioned in the drying main body part;
the distances from the cutting edges of the scrapers (421) of the N scraping arms (41) to the side wall of the drying main body part are all smaller than a first distance;
the distances from the supporting inclined arms (410) of the N scraping and sweeping arms (41) to the side wall of the drying bottom are all larger than a first distance and smaller than a second distance;
the lower end of the central rotating shaft (40) extends out of the lower part of the spray drying tower (1);
the upper end of the screw rod of the ball screw is coaxially and fixedly connected with a central rotating shaft (40) of the scraping and sweeping device (4);
a nut of the ball screw is arranged below the spray drying tower (1);
the vertical position of the nut of the ball screw is fixed relative to the spray drying tower (1);
the nut of the ball screw can rotate around the vertical axis of the ball screw;
a nut of the ball screw is coaxially and fixedly connected with a hollow helical gear;
the hollow helical gear is sleeved outside a screw rod of the ball screw;
a transverse shaft helical gear is coaxially fixed on an output shaft of the motor (61);
the hollow helical gear is meshed with the transverse shaft helical gear, and the output shaft of the motor (61) drives the nut of the ball screw to rotate, so that the screw of the ball screw and the central rotating shaft (40) of the scraping and sweeping device (4) are driven to rotate and move up and down.
2. A spray dryer according to claim 1,
n is 2, 3, 4 or 5.
3. A spray dryer according to claim 1,
the scraper (421) is detachably and fixedly assembled at the upper end of the supporting vertical rod (411).
4. A spray dryer according to claim 1,
the first distance is 2mm and the second distance is 300 mm.
5. A spray dryer according to claim 1,
the spray dryer also comprises an air supply device (5);
the air supply device (5) is communicated to the inside of the top of the spray drying tower (1) through a pipeline and is used for blowing dry hot air into the spray drying tower (1);
the top of the spray drying tower (1) is provided with an atomizer (2);
the atomizer (2) is fixed on a drying top cover of the spray drying tower (1) and is connected with external raw material solution through a liquid inlet pipe (3).
6. A spray dryer according to claim 5,
the spray dryer further comprises a cyclone separator (6);
an air outlet is formed in the bottom of the spray drying tower (1);
the cyclone separator (6) comprises a cyclone top cover, a cyclone main body part and a cyclone bottom which are sequentially connected together from top to bottom;
the side wall of the cyclone main body part is cylindrical;
the side wall of the bottom of the cyclone is in a frustum shape with a big top and a small bottom;
a feed inlet is formed in the side wall of the upper part of the cyclone main body part;
a feed opening is formed at the lower end of the bottom of the cyclone;
the first collecting bottle (10) is connected with a feed opening of the cyclone separator (6) through a first regulating valve (91);
and the air outlet of the spray drying tower (1) is communicated with the feed inlet of the cyclone separator (6) through a pipeline.
7. A spray dryer according to claim 6,
the spray dryer further comprises a bag house (8);
the cyclone top cover of the cyclone separator (6) is provided with an air outlet;
the filter bag chamber (8) is communicated with the cyclone separator (6) through a pipeline and an air outlet on the cyclone top cover;
a plurality of filter bags are arranged in the filter bag chamber (8);
the second collecting bottle (11) is connected with a feed opening at the lower part of the filter bag chamber (8) through a second regulating valve (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221943813.0U CN217448967U (en) | 2022-07-27 | 2022-07-27 | Spray drier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221943813.0U CN217448967U (en) | 2022-07-27 | 2022-07-27 | Spray drier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116059663A (en) * | 2023-03-06 | 2023-05-05 | 东北农业大学 | Special separator of powder grease |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116059663A (en) * | 2023-03-06 | 2023-05-05 | 东北农业大学 | Special separator of powder grease |
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