A drying oven

Abstract

The present invention relates to the technical field of drying equipment, and specifically discloses a drying oven, comprising a fixed frame and a double-cone cylinder arranged on the fixed frame, wherein a scraping device is arranged in the double-cone cylinder, and the scraping device comprises a mounting cylinder, a scraping frame for scraping raw materials on the inner wall of the cylindrical part of the double-cone cylinder, and a rotating assembly for driving the mounting cylinder to rotate. The scraping frame is provided with a filter hole for the raw materials to pass through, and the end of the scraping frame away from the inner wall of the double-cone cylinder is rotated and matched with the mounting cylinder. When the end of the scraping frame close to the inner wall of the double-cone cylinder rotates and abuts on the inner wall of the double-cone cylinder, the rotating assembly drives the mounting cylinder and the scraping frame to rotate to scrape the raw materials on the inner wall of the double-cone cylinder. When the end of the scraping frame close to the inner wall of the double-cone cylinder rotates and abuts on the outer wall of the mounting cylinder, the scraping frame squeezes and crushes the scraped raw materials. A drying oven of the present invention has the effect of improving the drying quality of the raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, and in particular to a drying oven. Background Art

[0002] Ultraviolet absorbers are light stabilizers that can absorb the ultraviolet light in sunlight and fluorescent light sources without changing themselves. They have the advantages of high absorption rate, non-toxicity, non-teratogenicity, good light and heat stability, etc. In the preparation process of ultraviolet absorbers, drying equipment is required for drying processing. Drying equipment is a mechanical device that removes moisture or other liquids from the surface of an object through specific technical means. It is used in many industries such as food, medicine, chemical industry, wood, textile, etc. Selecting suitable drying equipment according to the characteristics and needs of different materials can significantly improve production efficiency and product quality. Drying equipment classification, including classification by drying method, can be divided into: (1) conduction drying equipment, which conducts heat through the contact between the material and the heating surface to evaporate the moisture in the material. Common equipment includes hot plate dryer, roller dryer, etc.; (2) convection drying equipment, which uses hot air or other gases to transfer heat to the surface of the material to evaporate its moisture. Common equipment includes fluidized bed dryer, spray dryer, etc.; (3) radiation drying equipment, which transfers heat through electromagnetic waves or infrared radiation. Common equipment includes microwave dryer, infrared dryer, etc. According to the material properties, it can be divided into: (1) Powder material drying equipment: used for drying powder materials, such as fluidized bed dryer, rotary dryer, etc.; (2) Other classification methods: box type, vacuum, fluidized bed, spray, infrared and microwave drying equipment, etc.

[0003] The Chinese patent application document with publication number CN117490366A discloses a drying device for preparing taurine, comprising: a fixed frame; a double cone cylinder, which is arranged on the fixed frame so as to be flippable, a drying chamber is provided inside the double cone cylinder, a feed port and a discharge port connecting the drying chamber with the external environment are provided on the double cone cylinder, and sealing plates are provided at the feed port and the discharge port, and when the double cone cylinder is flipped, the positions of the feed port and the discharge port on the double cone cylinder can be interchanged; a heating chamber is provided inside the outer peripheral wall of the double cone cylinder; the double cone cylinder comprises an upper cone portion, a lower cone portion and a cylindrical portion, and the upper cone portion, the cylindrical portion and the lower cone portion are fixedly connected in sequence; a driving component is provided on the fixed frame, and the driving component is used to drive the double cone cylinder to flip, and when the double cone cylinder is flipped, the positions of the upper cone portion and the lower cone portion are exchanged; a vacuum component, and the vacuum component is used to extract gas in the drying chamber; a heating component, and the heating component is used to The heating chamber is heated; a spoiler component, the spoiler component includes a plurality of spoiler plates, a plurality of spoiler grooves connecting the drying chamber and the heating chamber are arranged on the inner side wall of the double-cone cylinder, the spoiler grooves are spirally arranged, and each spoiler plate always blocks a spoiler groove, and when the double-cone cylinder is flipped, the spoiler plate can guide the material in the drying chamber; the plurality of spoiler plates are divided into a plurality of upper plates and a plurality of lower plates, and the plurality of spoiler grooves are arranged on the upper cone portion and the lower cone portion, the spoiler grooves on the upper cone portion are distributed on at least half of the circumferential wall of the upper cone portion, and the spoiler grooves on the lower cone portion are distributed on at least half of the circumferential wall of the lower cone portion, and when the spoiler grooves on the upper cone portion and the spoiler grooves on the lower cone portion are in the minimum state, there is no overlapping part between the spoiler grooves on the cone portion and the spoiler grooves on the lower cone portion in the circumferential direction; the spiral direction of the spoiler grooves on the upper cone portion is opposite to that of the lower cone portion, the upper plate is arranged in the spoiler grooves of the upper cone portion, and the lower plate is arranged in the spoiler grooves of the lower cone portion.

[0004] In the process of preparing taurine, taurine containing water is placed in the drying chamber through the feed port, and the feed port is blocked with a blocking plate. Under the action of the vacuum component, the gas in the drying chamber is extracted. While the vacuum component is evacuating the gas, the heating component heats the heating chamber. After the heating chamber is heated, the taurine in the drying chamber begins to evaporate water vapor. Under the action of the vacuum component, the water vapor leaves the drying chamber together with the gas in the drying chamber. When the double cone is turned over on the fixed frame, the taurine in the drying chamber shakes, and the taurine moves circumferentially along the inner wall of the drying chamber to perform the drying operation.

[0005] In the above technology, when the raw materials are dried by a double-cone drum, since the raw materials contain moisture, when the raw materials enter the double-cone drum for drying, the raw materials are easily attached to the inner wall of the cylindrical part of the double-cone drum, so that during the drying process, the raw materials attached to the inner wall of the cylindrical part of the double-cone drum will stick together into blocks. When the raw materials stick together into blocks, the drying quality of the raw materials will be poor. Summary of the invention

[0006] The present invention provides a drying oven, aiming to solve the technical problem that when drying raw materials through a double-cone cylinder in the prior art, since the raw materials contain moisture, when the raw materials enter the double-cone cylinder for drying, the raw materials are easily attached to the inner wall of the cylindrical part of the double-cone cylinder, so that during the drying process, the raw materials attached to the inner wall of the cylindrical part of the double-cone cylinder will stick together into blocks, and when the raw materials stick together into blocks, the drying quality of the raw materials will be poor.

[0007] A drying oven of the present invention comprises a fixed frame and a double-cone cylinder arranged on the fixed frame, a scraping device is arranged in the double-cone cylinder, the scraping device comprises a mounting cylinder installed in the double-cone cylinder, a scraping frame arranged on the mounting cylinder and used for scraping the raw materials on the inner wall of the cylindrical part of the double-cone cylinder, and a rotating assembly used to drive the mounting cylinder to rotate, the scraping frame is provided with filter holes for the raw materials to pass through, the scraping frame is rotated to cooperate with the mounting cylinder at one end away from the inner wall of the double-cone cylinder, when the scraping frame is rotated and abutted against the inner wall of the double-cone cylinder at one end close to the inner wall of the double-cone cylinder, the rotating assembly drives the mounting cylinder and the scraping frame to rotate and scrapes the raw materials on the inner wall of the double-cone cylinder, and when the scraping frame is rotated and abutted against the outer wall of the mounting cylinder at one end close to the inner wall of the double-cone cylinder, the scraping frame squeezes and crushes the scraped raw materials.

[0008] Beneficial effect: through the setting of the scraping device, when the rotating component drives the mounting cylinder to rotate, it can drive the scraper frame on the mounting cylinder to rotate. During the rotation of the scraper frame, the scraper frame abuts against one end of the inner wall of the cylindrical part of the double-cone cylinder, which can timely scrape the raw materials on the inner wall of the cylindrical part of the double-cone cylinder, thereby reducing the phenomenon of raw materials sticking to the inner wall of the cylindrical part of the double-cone cylinder and improving the drying quality of the raw materials. At the same time, when one end of the scraper frame is rotated and adjusted, when the scraper frame abuts against the outer wall of the mounting cylinder, the unclumped raw materials can fall from the filter holes of the scraper frame, and the agglomerated raw materials can be pushed by the scraper frame and drive the agglomerated raw materials to move to the outer wall of the mounting cylinder. At this time, the scraper frame and the mounting cylinder can squeeze and crush the agglomerated raw materials, which can reduce the agglomeration of raw materials inside the double-cone cylinder and further improve the drying quality of the raw materials.

[0009] Preferably, the scraper frame includes a fixing portion rotatably engaged with the mounting tube and two limiting portions provided on the fixing portion and used for limiting the raw materials at both ends of the fixing portion, and the two limiting portions are respectively located at both ends of the fixing portion.

[0010] Beneficial effect: Through the setting of the limiting part, the two ends of the fixed part can be limited, so as to limit the raw materials in the fixed part, and reduce the phenomenon of raw materials falling from the two ends of the fixed part during the rotation of the double cone.

[0011] Preferably, a support seat is provided on the mounting cylinder, and a rotating rod rotatably matched with the support seat is provided on the scraping frame, and the rotating rod is connected to the scraping frame.

[0012] Beneficial effect: by setting the support seat, the rotating rod can be supported, and when the rotating rod rotates in the support seat, the scraper frame can be rotated.

[0013] Preferably, a driving member 1 for driving the rotating rod to rotate is installed on the mounting cylinder.

[0014] Preferably, the rotating assembly includes a rotating shaft arranged in the mounting cylinder and a second driving member for driving the rotating shaft to rotate, and the second driving member is installed in the double-conical cylinder.

[0015] Beneficial effect: By setting the second driving member, the rotating shaft can be driven to rotate, thereby driving the installation cylinder to rotate.

[0016] Preferably, a clearance groove is provided on the installation cylinder, a fixed cylinder is installed in the installation cylinder, the outer wall of the fixed cylinder cooperates with the scraping frame to extrude and crush the scraped raw materials, and the rotating shaft is connected to the fixed cylinder.

[0017] Beneficial effect: through the setting of the fixed cylinder, when the scraping frame rotates toward the fixed cylinder, the scraped raw materials can be pushed onto the outer wall of the fixed cylinder, and through the cooperation of the fixed cylinder and the scraping frame, the scraped raw materials can be squeezed and crushed.

[0018] Preferably, the fixed cylinder is configured as a hollow structure, and a heating device for supplying heat to the fixed cylinder is provided on the fixed cylinder.

[0019] Beneficial effect: by setting up the heating device, heat is supplied to the fixed cylinder, so that the raw materials between the scraper frame and the fixed cylinder can be quickly dried, and then crushed, which can improve the drying quality of the raw materials.

[0020] Preferably, the heating device comprises a heating pipe which is in communication with the fixed cylinder and is used to supply heat to the fixed cylinder, and a heating assembly which is used to supply heat to the heating pipe.

[0021] Beneficial effect: The hot air is transported into the heating pipe through the heating component, and the heating pipe transports the hot air into the fixed cylinder, thereby achieving drying of the raw materials at the outer wall of the fixed cylinder.

[0022] Preferably, a spiral spring is provided between the fixed cylinder and the mounting cylinder to drive the scraping frame to scrape the raw materials on the outer wall of the fixed cylinder. One end of the spiral spring is connected to the fixed cylinder, and the other end is connected to the mounting cylinder. The end of the scraping frame close to the fixed cylinder abuts against the outer wall of the fixed cylinder.

[0023] Beneficial effect: Through the setting of the volute spring, when the scraper frame is subjected to a large force during the rotation process, the scraper frame can drive the mounting cylinder to rotate relative to the fixed cylinder. During the rotation of the scraper frame, the support seat is driven to rotate. The support seat can scrape off the raw materials adhered to the fixed cylinder at a position away from the rotation direction of the fixed cylinder, thereby further improving the drying quality of the raw materials.

[0024] Preferably, a receiving groove for receiving the limiting portion is provided on the installation tube, and a plurality of the receiving grooves are provided, and the plurality of the receiving grooves are evenly arranged around the installation tube.

[0025] The beneficial effects of the present invention are:

[0026] 1. In the present invention, through the setting of the scraping device, when the rotating component drives the mounting cylinder to rotate, it can drive the scraper frame on the mounting cylinder to rotate. During the rotation of the scraper frame, one end of the scraper frame abuts against the inner wall of the cylindrical part of the double-cone cylinder, which can timely scrape the raw materials on the inner wall of the cylindrical part of the double-cone cylinder, thereby reducing the phenomenon of raw materials sticking to the inner wall of the cylindrical part of the double-cone cylinder and improving the drying quality of the raw materials. At the same time, when one end of the scraper frame is rotated and adjusted, when the scraper frame abuts against the outer wall of the mounting cylinder, the unagglomerated raw materials can fall from the filter holes of the scraper frame, and the agglomerated raw materials can be pushed by the scraper frame and drive the agglomerated raw materials to move to the outer wall of the mounting cylinder. At this time, the scraper frame and the mounting cylinder can squeeze and crush the agglomerated raw materials, which can reduce the agglomeration of raw materials inside the double-cone cylinder and further improve the drying quality of the raw materials.

[0027] 2. In the present invention, heat is supplied to the fixed cylinder by setting a heating device, so that the raw materials between the scraper frame and the fixed cylinder can be quickly dried and then crushed, thereby improving the drying quality of the raw materials.

[0028] 3. In the present invention, by setting the volute spring, when the scraper frame is subjected to a large force during the rotation process, the scraper frame can drive the mounting cylinder to rotate relative to the fixed cylinder. During the rotation of the scraper frame, the support seat is driven to rotate. The support seat can scrape the raw materials adhered to the fixed cylinder at a position away from the rotation direction of the fixed cylinder, thereby further improving the drying quality of the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a partial cross-sectional view showing the positional relationship between the scraping device and the double cone cylinder of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the present invention showing the connection relationship between the support seat and the scraper frame.

[0032] Figure 4 It is a structural schematic diagram of the present invention showing the connection relationship between the rotating shaft and the second driving member.

[0033] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0034] Figure 6 It is a structural schematic diagram showing the connection relationship between the fixed cylinder and the spiral spring of the present invention.

[0035] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle.

[0036] Figure 8 It is a structural schematic diagram showing the installation tube of the present invention.

[0037] Fig. 9 It is a structural schematic diagram showing the fixing cylinder of the present invention.

[0038] Reference numerals:

[0039] 1. Fixed frame; 2. Double cone cylinder; 3. Scraping device; 31. Mounting cylinder; 311. Displacement groove; 312. Storage groove; 32. Scraping frame; 321. Fixed part; 322. Limiting part; 33. Rotating assembly; 331. Rotating shaft; 332. Driving member 2; 4. Support seat; 5. Rotating rod; 51. Driving member 1; 6. Fixed cylinder; 7. Heating device; 71. Heating pipe; 8. Volute spring. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0041] Reference Figure 1-Figure 9A drying oven of the present invention comprises a fixed frame 1 and a double-cone cylinder 2 arranged on the fixed frame 1, the double-cone cylinder 2 is rotatably matched with the fixed frame 1, a discharge port is arranged at the bottom of the double-cone cylinder 2, a feed port is arranged at the top, the double-cone cylinder 2 is arranged as a double-layer structure, a drying chamber for drying raw materials is arranged between the two layers, and a driving device for driving the double-cone cylinder 2 to rotate in a vertical direction is installed on the fixed frame 1; a scraping device 3 is arranged in the double-cone cylinder 2, and the scraping device 3 comprises a mounting cylinder 31 installed in the double-cone cylinder 2, a scraping frame 32 arranged on the mounting cylinder 31 and used to scrape the raw materials on the inner wall of the cylindrical part of the double-cone cylinder 2, and a driving device for driving the mounting cylinder 3 1 rotating assembly 33; when it is necessary to dry the raw materials, first add the raw materials into the double cone cylinder 2 through the feeding port of the double cone cylinder 2, then start the driving device to drive the double cone cylinder 2 to rotate on the fixed frame 1, and at the same time start the rotating assembly 33 to drive the mounting cylinder 31 to rotate, and the mounting cylinder 31 drives the scraping frame 32 to rotate along the axial direction of the double cone cylinder 2. When the scraping frame 32 rotates, one end of the scraping frame 32 abuts against the inner wall of the double cone cylinder 2 to scrape off the raw materials adhered to the inner wall of the cylindrical part of the double cone cylinder 2. The scraped raw materials continue to be dried in the double cone cylinder 2. After the raw materials are dried, they are discharged from the discharge port to complete the drying operation of the raw materials.

[0042] Reference Figure 2-Figure 4 The scraper frame 32 is evenly arranged with a plurality of scraper frames 32 along the central axis of the mounting cylinder 31. The scraper frame 32 is provided with filter holes for the raw materials to pass through. The filter holes are evenly arranged on the scraper frame 32. The scraper frame 32 includes a fixed portion 321 rotatably matched with the mounting cylinder 31 and two limiting portions 322 fixedly arranged on the fixed portion 321 and used to limit the raw materials at both ends of the fixed portion 321. The fixed portion 321 is set as an arc plate, and the limiting portion 322 is set as a fan-shaped plate. The two limiting portions 322 are respectively located at both ends of the fixed portion 321 along the vertical direction. The mounting cylinder 31 is provided with a storage portion for storing the limiting portion 322. There are multiple receiving grooves 312, and the multiple receiving grooves 312 are evenly arranged around the mounting tube 31; the end of the scraper frame 32 away from the inner wall of the double-cone cylinder 2 rotates to cooperate with the mounting tube 31, and when the end of the scraper frame 32 close to the inner wall of the double-cone cylinder 2 rotates and abuts against the inner wall of the double-cone cylinder 2, the rotating assembly 33 drives the mounting tube 31 and the scraper frame 32 to rotate, and the scraper frame 32 can scrape the raw materials on the inner wall of the double-cone cylinder 2. At the same time, when the end of the scraper frame 32 close to the inner wall of the double-cone cylinder 2 rotates and abuts against the outer wall of the mounting tube 31, the scraper frame 32 can squeeze and crush the scraped raw materials.

[0043] Reference Figure 2 , Figure 4 and Figure 5The rotating assembly 33 includes a rotating shaft 331 arranged in the mounting cylinder 31 and a driving member 332 for driving the rotating shaft 331 to rotate. A support plate is fixedly arranged in the double-conical cylinder 2. The driving member 332 is fixedly installed on the support plate in the double-conical cylinder 2. The driving member 332 directly adopts a motor. The shell of the driving member 332 is fixedly connected to the support plate, and the output shaft of the driving member 332 is fixedly connected to the rotating shaft 331. When the driving member 332 is started, it can drive the rotating shaft 331 to rotate, and the rotating shaft 331 drives the mounting cylinder 31 to rotate, and then drives the scraping frame 32 to rotate. During the rotation of the scraping frame 32, the raw materials on the inner wall of the double-conical cylinder 2 are scraped off.

[0044] Reference Figure 3-Figure 5 A support seat 4 is fixedly provided on the mounting cylinder 31, and a rotating rod 5 rotatably matched with the support seat 4 is provided on the scraper frame 32. The rotating rod 5 is fixedly connected to one end of the scraper frame 32 close to the mounting cylinder 31, and a driving member 51 for driving the rotating rod 5 to rotate is fixedly installed on the mounting cylinder 31. The driving member 51 directly adopts a motor, and the shell of the driving member 51 is fixedly connected to the mounting cylinder 31, and the output shaft of the driving member 51 is fixedly connected to the rotating rod 5; starting the driving member 51 can drive the rotating rod 5 to rotate, and the rotating rod 5 drives the scraper frame 32 to rotate along the central axis of the rotating rod 5.

[0045] Reference Figure 3 , Figure 7-Figure 9 The mounting cylinder 31 is provided with a giving way groove 311, and a fixed cylinder 6 is installed in the mounting cylinder 31. The fixed cylinder 6 is set as a hollow structure. The fixed cylinder 6 is fixedly connected to the rotating shaft 331. A spiral spring 8 is arranged between the fixed cylinder 6 and the mounting cylinder 31 to drive the scraping frame 32 to scrape the raw materials on the outer wall of the fixed cylinder 6. One end of the spiral spring 8 is fixedly connected to the fixed cylinder 6, and the other end is fixedly connected to the mounting cylinder 31. One end of the scraping frame 32 close to the fixed cylinder 6 abuts against the outer wall of the fixed cylinder 6. Through the setting of the spiral spring 8, the scraping frame 3 During the rotation process, after being subjected to a large force, the scraper frame 32 can drive the mounting cylinder 31 to rotate relative to the fixed cylinder 6. During the rotation process of the scraper frame 32, the support seat 4 is driven to rotate. The support seat 4 can scrape the raw materials adhered to the fixed cylinder 6 at a position away from the rotation direction of the fixed cylinder 6, and then dry them after scraping, thereby further improving the drying quality of the raw materials. When the scraper frame 32 rotates toward the fixed cylinder 6 and abuts against the outer wall of the fixed cylinder 6, the outer wall of the fixed cylinder 6 cooperates with the scraper frame 32 to squeeze and crush the scraped raw materials.

[0046] Reference Figure 2 , Figure 3 and Figure 4In order to quickly dry the raw materials between the scraper rack 32 and the fixed cylinder 6 and crush the dried raw materials, a heating device 7 for supplying heat to the fixed cylinder 6 is provided on the fixed cylinder 6. The heating device 7 includes a heating pipe 71 connected to the fixed cylinder 6 and used to supply heat to the fixed cylinder 6, and a heating component for supplying heat to the heating pipe 71. The heating pipe 71 is connected to the fixed cylinder 6, and the top of the heating pipe 71 extends out of the outside of the double cone cylinder 2. The heating component directly uses a delivery pump and a delivery pipeline. The delivery pump is started to deliver hot air to the heating pipe 71 through the delivery pipeline. The heating pipe 71 supplies heat to the fixed cylinder 6, thereby quickly drying the raw materials between the scraper rack 32 and the fixed cylinder 6.

[0047] The implementation principle of a drying oven of the present invention is as follows: when the raw materials need to be dried, the raw materials are first added into the double-cone cylinder 2 through the feed port of the double-cone cylinder 2, and then the driving device is started to drive the double-cone cylinder 2 to rotate, and the second driving member 332 is started at the same time, and the second driving member 332 drives the rotating shaft 331 to rotate, and the rotating shaft 331 drives the fixed cylinder 6 to rotate clockwise, and the fixed cylinder 6 drives the installation cylinder 31 to rotate, and then drives the scraper frame 32 to rotate. During the rotation of the scraper frame 32, one end of the scraper frame 32 located at the inner wall of the double-cone cylinder 2 can scrape the raw materials adhered to the inner wall of the double-cone cylinder 2, and the adhered raw materials fall into the scraper frame 32. During the rotation of the scraper frame 32, part of the raw materials can be discharged through the filter holes of the scraper frame 32;

[0048] When it is necessary to process the raw materials adhered in the scraper frame 32, the delivery pump is started to deliver the hot air to the heat supply pipe 71 through the delivery pipeline, and the heat supply pipe 71 delivers the hot air to the fixed cylinder 6 to provide heat to the fixed cylinder 6;

[0049] At the same time, the driving member 51 is started, and the driving member 51 drives the rotating rod 5 to rotate in the supporting seat 4, and the rotating rod 5 drives the scraper frame 32 to rotate along the central axis of the rotating rod 5. When the scraper frame 32 rotates toward the fixed cylinder 6 and abuts against the outer wall of the fixed cylinder 6, the scraper frame 32 can push the raw material to move to the outer wall of the fixed cylinder 6, and the raw material is further dried at the outer wall of the fixed cylinder 6. Then, the outer wall of the fixed cylinder 6 cooperates with the scraper frame 32 to squeeze and crush the scraped raw material, and the crushed raw material is discharged through the filter holes of the scraper frame 32;

[0050] Moreover, when one end of the scraper frame 32 rotates away from the inner wall of the double-cone cylinder 2, when the scraper frame 32 is subjected to a large force, the scraper frame 32 can drive the mounting cylinder 31 to rotate relative to the fixed cylinder 6, and the scraper frame 32 drives the support seat 4 to rotate in a direction away from the fixed cylinder 6. The rotating support seat 4 can scrape off the raw materials bonded to the fixed cylinder 6 at a position away from the fixed cylinder 6 in the direction of rotation, and dry them after scraping;

[0051] After the raw materials are dried in the double-cone drum 2, they are discharged from the discharge port of the double-cone drum 2, completing the drying operation of the raw materials. When the raw materials are dried in the double-cone drum 2, the raw materials on the inner wall of the cylindrical part of the double-cone drum 2 are scraped off by the scraper rack 32, and the unagglomerated raw materials can be discharged through the filter holes of the scraper rack 32. The agglomerated raw materials are squeezed and crushed, which can reduce the phenomenon of the raw materials sticking together in the double-cone drum 2, thereby improving the drying quality of the raw materials.

[0052] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A drying oven, comprising a fixed frame (1) and a double cone (2) arranged on the fixed frame (1), characterized in that: A scraping device (3) is arranged in the double-cone cylinder (2), and the scraping device (3) comprises a mounting cylinder (31) mounted in the double-cone cylinder (2), a scraping frame (32) arranged on the mounting cylinder (31) and used to scrape the raw material on the inner wall of the cylindrical portion of the double-cone cylinder (2), and a rotating assembly (33) used to drive the mounting cylinder (31) to rotate, wherein the scraping frame (32) is provided with a filter hole for the raw material to pass through, and the end of the scraping frame (32) facing away from the inner wall of the double-cone cylinder (2) rotates The scraper frame (32) is movably matched with the mounting cylinder (31). When one end of the scraper frame (32) close to the inner wall of the double-cone cylinder (2) rotates and abuts against the inner wall of the double-cone cylinder (2), the rotating assembly (33) drives the mounting cylinder (31) and the scraper frame (32) to rotate, and scrapes the raw materials on the inner wall of the double-cone cylinder (2). When one end of the scraper frame (32) close to the inner wall of the double-cone cylinder (2) rotates and abuts against the outer wall of the mounting cylinder (31), the scraper frame (32) squeezes and crushes the scraped raw materials. The scraper frame (32) comprises a fixing portion (321) rotatably engaged with the mounting tube (31) and two limiting portions (322) arranged on the fixing portion (321) and used to limit the position of the raw material at both ends of the fixing portion (321), the two limiting portions (322) being respectively located at both ends of the fixing portion (321).

2. A drying oven according to claim 1, characterized in that: A support seat (4) is provided on the mounting cylinder (31), and a rotating rod (5) rotatably matched with the support seat (4) is provided on the scraping frame (32), and the rotating rod (5) is connected to the scraping frame (32).

3. A drying oven according to claim 2, characterized in that: A driving member (51) for driving the rotating rod (5) to rotate is mounted on the mounting cylinder (31).

4. A drying oven according to claim 1, characterized in that: The rotating assembly (33) comprises a rotating shaft (331) arranged in the mounting cylinder (31) and a second driving member (332) used for driving the rotating shaft (331) to rotate, wherein the second driving member (332) is installed in the double-cone cylinder (2).

5. A drying oven according to claim 4, characterized in that: The installation cylinder (31) is provided with a clearance groove (311), a fixed cylinder (6) is installed in the installation cylinder (31), the outer wall of the fixed cylinder (6) cooperates with the scraping frame (32) to extrude and crush the scraped raw materials, and the rotating shaft (331) is connected to the fixed cylinder (6).

6. A drying oven according to claim 5, characterized in that: The fixed cylinder (6) is configured as a hollow structure, and a heating device (7) for supplying heat to the fixed cylinder (6) is provided on the fixed cylinder (6).

7. A drying oven according to claim 6, characterized in that: The heat supply device (7) comprises a heat supply pipe (71) connected to the fixed cylinder (6) and used to supply heat to the fixed cylinder (6), and a heat supply component used to supply heat to the heat supply pipe (71).

8. A drying oven according to claim 7, characterized in that: A scroll spring (8) is provided between the fixed cylinder (6) and the mounting cylinder (31) for driving a scraping frame (32) to scrape raw materials on the outer wall of the fixed cylinder (6); one end of the scroll spring (8) is connected to the fixed cylinder (6), and the other end is connected to the mounting cylinder (31); one end of the scraping frame (32) close to the fixed cylinder (6) abuts against the outer wall of the fixed cylinder (6).

9. A drying oven according to claim 1, characterized in that: The installation tube (31) is provided with a receiving groove (312) for receiving the limiting portion (322), and a plurality of the receiving grooves (312) are provided, and the plurality of the receiving grooves (312) are evenly arranged around the installation tube (31).

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