A feeding and cleaning device for a double-cone dryer

Abstract

The present invention relates to the technical field of double-cone dryers, and in particular to a material-changing and cleaning device for a double-cone dryer, comprising an inner wall scraping mechanism and a rotating mechanism, wherein the inner wall scraping mechanism comprises a middle scraper, an upper scraper, a lower scraper, a synchronous pulling mechanism and two material receiving boxes, wherein the material-changing and cleaning device for the double-cone dryer retracts the middle scraper, the upper scraper and the lower scraper through the synchronous pulling mechanism, so that they can be extended into a double-axis drying tank and unfolded, and then the middle scraper, the upper scraper and the lower scraper are pushed for a second time through the rotating pulling mechanism, so that the middle scraper, the upper scraper and the lower scraper are fitted with the inner wall of the double-cone dryer, and then rotated by the scraper to achieve rapid cleaning, and the dried materials after cleaning can automatically fall into the material receiving box for easy collection, and the double-axis drying tank is shaken during the cleaning process to make the materials slide down and be collected faster, and in order to drive the middle scraper, the upper scraper and the lower scraper to rotate through the power of the shaking during the shaking.

Description

Technical Field

[0001] The present invention relates to the technical field of double-cone dryers, and particularly to a material-changing and cleaning device for a double-cone dryer. Background Art

[0002] When drying drugs or other raw materials, dry matter will inevitably adhere to the inner wall of the double-cone dryer. The traditional treatment method is to use the built-in high-pressure nozzle of the double-cone dryer and rotate the double-cone drying tank to clean the dry matter on the inner wall.

[0003] Chinese Patent, Publication No.: CN104324904B, Title: On-line cleaning system for double-cone dryer, discloses a method for comprehensively cleaning the inside of the double-cone drying tank through a spraying device, which is applicable to production places with a high cleanliness level. However, this device ignores the cleaning and collection of the dry matter inside the double-cone drying tank, which results in the waste of the rinsed dry matter. And such long-term waste will cause damage to the cost. Moreover, if this substance is only rinsed and then discharged into the sewer pipe, it will inevitably cause water pollution. And during cleaning, since the inside of the double-cone drying tank is not pre-cleaned but directly rinsed with water, due to the large amount of residual dry matter, the number of rinsing times and the amount of water required will increase. Although the price of water resources is not high, the treatment of the cleaned water will be too troublesome.

[0004] However, although the traditional cleaning device can enter the double-cone drying tank for rotary cleaning, there is no special cleaning device applicable to the double-cone drying tank, which makes the cleaning process slow and the collected dry matter after cleaning difficult to collect.

[0005] Therefore, a material-changing and cleaning device for a double-cone dryer is needed, which can pre-clean the inside of the double-cone drying tank, collect the cleaned dry matter, and the cleaning process is rapid, and the cleaned dry matter can be collected immediately. Summary of the Invention

[0006] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a material-changing and cleaning device for a double-cone dryer, which can pre-clean the inside of the double-cone drying tank, collect the cleaned dry matter, and the cleaning process is rapid, and the cleaned dry matter can be collected immediately.

[0007] To achieve the above object, the present invention adopts the following technical solutions: The present invention provides a material-changing and cleaning device for a double-cone dryer, which includes an inner-wall scraping mechanism for cleaning and collecting the sticky drugs on the inner arm of the double-shaft drying tank and a rotating mechanism for driving the inner-wall scraping mechanism to rotate along the axis of the double-shaft drying tank. The inner-wall scraping mechanism includes a middle scraper, an upper scraper, a lower scraper, a synchronous pulling mechanism, and two receiving boxes. The synchronous pulling mechanism is installed on the top of the rotating mechanism and is used to synchronously pull the two receiving boxes. The two receiving boxes are installed on the synchronous pulling mechanism. One end of the upper scraper and the lower scraper are respectively hinged to both ends of the middle scraper. The middle scraper is horizontally movably installed on the synchronous pulling mechanism. The other ends of the upper scraper and the lower scraper are hinged to the two receiving boxes. The diameters of the feeding port and the discharging port of the double-shaft drying tank are equal to the outer diameter of the receiving box

[0008] Preferably, a rotating and pulling mechanism is provided in the two receiving boxes for pulling the lower scraper or the upper scraper to rotate along the hinge joint with the middle scraper. The rotating and pulling mechanism includes a lower pulling mechanism, a hinge seat, a hinge rod, a guide slide plate, and a sliding column. The lower pulling mechanism is installed in the receiving box. The hinge seat is located in the receiving box. The lower pulling mechanism is used to pull the hinge seat to move vertically. The guide slide plate is fixedly installed on the inner wall of the receiving box. The sliding column is hinged to one end of the lower scraper. An arc-shaped sliding groove for the sliding column to slide is provided in the guide slide plate. One end of the hinge rod is hinged to the sliding column, and the other end of the hinge rod is hinged to the hinge seat.

[0009] Preferably, the rotating mechanism includes a rotating seat, a supporting seat, an arc-shaped sliding seat, an arc-shaped sliding rail, a gear box, and an arc-shaped gear ring. The synchronous pulling mechanism is fixedly connected to the rotating seat. The rotating seat is rotatably connected to the supporting seat. The arc-shaped sliding seat is fixedly installed at the bottom of the supporting seat. The arc-shaped sliding seat is slidably connected to the arc-shaped sliding rail. The arc-shaped gear ring is fixedly installed on the side of the arc-shaped sliding rail. The gear box is fixedly installed on the supporting seat. A driving gear is provided on one side of the supporting seat. The driving gear meshes with the arc-shaped gear ring. A rotating shaft for driving the rotating seat to rotate is provided at the bottom of the rotating seat. The rotating shaft is installed in the gear box.

[0010] Preferably, the synchronous pulling mechanism includes a rotating shaft, a driving motor, and a guide post. The driving motor is fixedly installed on the rotating seat. One end of the rotating shaft is connected to the output end of the driving motor. Screw tubes are provided in the middle of the two receiving boxes. External threads meshing with the screw tubes are provided on the outer edge of the rotating shaft. The tops of the two guide posts are fixedly connected to the receiving boxes. Guide holes for the vertical sliding of the guide posts are provided on the rotating seat.

[0011] Preferably, a collar is sleeved on the outer edge of the rotating shaft. Stop rings for limiting the top and bottom of the collar are provided on the rotating shaft. When the rotating shaft rotates, two telescopic tubes are fixedly provided on the outer edge of the collar. One end of the telescopic tube is fixedly connected to the middle scraper.

[0012] Preferably, the pulling-down mechanism includes an electric push rod and a connecting frame. The electric push rod is fixedly installed at the bottom of the material receiving box. The output end of the electric push rod is fixedly connected to the connecting frame, and the connecting frame is fixedly connected to the hinge seat.

[0013] Preferably, there are three middle scrapers, upper scrapers and lower scrapers each, and they are evenly distributed along the circumferential direction of the double-shaft drying tank.

[0014] Preferably, a pushing mechanism is arranged at the bottom of the rotating mechanism for pushing the inner wall scraping mechanism into the double-shaft drying tank.

[0015] The beneficial effect of the present invention is that: for the material-changing and cleaning device of the double-cone dryer, the middle scraper, the upper scraper and the lower scraper are retracted by the synchronous pulling mechanism, so that they can extend into the double-shaft drying tank and be unfolded. Then, through the secondary pushing of the rotating and pulling mechanism, the middle scraper, the upper scraper and the lower scraper are attached to the inner wall of the double-cone dryer, so that the device can be used for the double-cone dryer. By rotating it, rapid cleaning can be achieved, and the dried materials after cleaning can automatically fall into the material receiving box, which is convenient for collection.

[0016] And in order to make the dried materials be collected into the material receiving box faster, the double-shaft drying tank is shaken during the cleaning process, so that the materials can slide down and be collected faster. And in order to make the middle scraper, the upper scraper and the lower scraper rotate when shaking, the power of shaking is used to drive them, so as to avoid frequent switching of the rotation direction of the motor and not need to consider the problem of the motor torque during driving. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a perspective view of the three-dimensional structure of the present invention.

[0019] Figure 2 is Figure 1 the partial front view of

[0020] Figure 3 It is a perspective view of the three-dimensional structure of the inner wall scraping mechanism in the retracted state inserted into the double-shaft drying tank.

[0021] Figure 4 It is a perspective view of the three-dimensional structure when the lower scraper is not attached to the inner wall of the double-shaft drying tank.

[0022] Figure 5Perspective view of the three-dimensional structure where the lower scraper fits against the inner wall of the double-shaft drying tank.

[0023] Figure 6 Front view of the lower scraper fitting against the inner wall of the double-shaft drying tank.

[0024] Figure 7 Exploded schematic diagram of the three-dimensional structure of the rotating mechanism.

[0025] Figure 8 Schematic diagram of the three-dimensional structure of the synchronous pulling and moving mechanism.

[0026] Explanation of reference numerals: 1 - double-shaft drying tank; 2 - suction filter head; 3 - middle scraper; 4 - upper scraper; 5 - lower scraper; 6 - material receiving box; 7 - synchronous pulling and moving mechanism; 7a - rotating shaft; 7b - driving motor; 7c - guide post; 8 - rotating pulling and moving mechanism; 8a - lower pulling mechanism; 8a1 - electric push rod; 8a2 - connecting frame; 8b - hinge seat; 8c - hinge rod; 8d - guide sliding plate; 8e - sliding column; 9 - rotating mechanism; 9a - rotating seat; 9b - support seat; 9c - arc-shaped sliding seat; 9d - arc-shaped sliding rail; 9e - gear box; 9f - arc-shaped gear ring; 10 - collar; 11 - telescopic tube. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment: The present invention provides a material-changing and cleaning device for a double-cone dryer, as Figure 1-3 shown, including an inner wall scraping and cleaning mechanism for cleaning and collecting the sticky medicine on the inner arm of the double-shaft drying tank 1 and a rotating mechanism 9 for driving the inner wall scraping and cleaning mechanism to rotate along the axis of the double-shaft drying tank 1. A pushing mechanism for pushing the inner wall scraping and cleaning mechanism into the double-shaft drying tank 1 is provided at the bottom of the rotating mechanism 9, and the pushing mechanism is not visible in the figure. It can be imagined that the direction of the descent of the double-shaft drying tank 1 can be adopted so that the double-shaft drying tank 1 can sleeve the inner wall scraping and cleaning mechanism.

[0029] The inner wall scraping mechanism includes a middle scraper 3, an upper scraper 4, a lower scraper 5, a synchronous pulling mechanism 7 and two material receiving boxes 6. The synchronous pulling mechanism 7 is installed on the top of the rotating mechanism 9. The synchronous pulling mechanism 7 is used to synchronously pull the two material receiving boxes 6. The two material receiving boxes 6 are installed on the synchronous pulling mechanism 7. One ends of the upper scraper 4 and the lower scraper 5 are respectively hinged to both ends of the middle scraper 3. The middle scraper 3 is horizontally movably installed on the synchronous pulling mechanism 7. The other ends of the upper scraper 4 and the lower scraper 5 are hinged to the two material receiving boxes 6. The diameters of the feed inlet and the discharge outlet of the double-shaft drying tank 1 are equal to the outer diameter of the material receiving box 6.

[0030] When the middle scraper 3 is inserted into the double-shaft drying tank 1, it will present a state as shown in Figure 3 In the figure, there will be gaps between the two material receiving boxes 6 and the feed inlet and the discharge outlet of the double-shaft drying tank 1.

[0031] Subsequently, by controlling the synchronous pulling mechanism 7 to simultaneously pull the two material receiving boxes 6, the two material receiving boxes 6 are gradually moved closer to the double-shaft drying tank 1. When the material receiving box 6 moves, it will drive the upper scraper 4 and the lower scraper 5 to move, so that the upper scraper 4 and the lower scraper 5 push the middle scraper 3 to slide horizontally. Finally, the middle scraper 3 fits with the inner wall of the double-shaft drying tank 1. However, as shown in Figure 2 In the figure, there will be gaps between the upper scraper 4 and the lower scraper 5 and the inner wall of the double-shaft drying tank 1 and the inner wall of the double-shaft drying tank 1. By driving the synchronous pulling mechanism 7 to rotate through the rotating mechanism 9, the synchronous pulling mechanism 7 will drive the middle scraper 3, the upper scraper 4 and the lower scraper 5 to rotate, so that the middle scraper 3 will scrape the inner wall of the double-shaft drying tank 1 clean. The scraped drugs will slide down along the double-shaft drying tank 1 into the material receiving box 6 located at the bottom of the double-shaft drying tank 1, and the material receiving box 6 located at the top of the double-shaft drying tank 1 is used to cover the top of the double-shaft drying tank 1 to reduce the floating out of drug powder along the top of the double-shaft drying tank 1.

[0032] In order to enable the upper scraper 4 and the lower scraper 5 to scrape the inner edge two-side conical inner walls of the double-shaft drying tank 1 clean, it is necessary to make the upper scraper 4 and the lower scraper 5 fit with the inner wall of the double-shaft drying tank 1, as shown in Figure 2 、 4As shown in Figures 5 and 6, a rotating pulling mechanism 8 for pulling the lower scraper 5 or the upper scraper 4 to rotate along the hinge with the middle scraper 3 is provided in two material receiving boxes 6. The rotating pulling mechanism 8 includes a lower pulling mechanism 8a, a hinge seat 8b, a hinge rod 8c, a guide slide plate 8d and a sliding column 8e. The lower pulling mechanism 8a is installed in the material receiving box 6, and the hinge seat 8b is located in the material receiving box 6. The lower pulling mechanism 8a is used to pull the hinge seat 8b to move vertically. The guide slide plate 8d is fixedly installed on the inner wall of the material receiving box 6. The sliding column 8e is hinged to one end of the lower scraper 5. An arc-shaped chute for the sliding column 8e to slide is provided in the guide slide plate 8d. The axis of the arc-shaped chute is coaxial with the axis of the lower scraper 5 rotating around the middle scraper 3. One end of the hinge rod 8c is hinged to the sliding column 8e, and the other end of the hinge rod 8c is hinged to the hinge seat 8b. Among them, when the number of the middle scraper 3, the upper scraper 4 and the lower scraper 5 increases, the number of the guide slide plate 8d, the sliding column 8e and the hinge rod 8c increases correspondingly.

[0033] Pulling downward through the lower pulling mechanism 8a will cause the lower scraper 5 to move from Figure 4 the state to Figure 5 the state. That is, it will change from Figure 2 the state to Figure 6 the state. The inner walls of the upper scraper 4 and the lower scraper 5 are both attached to the inner walls of the two end frustums of the double-shaft drying tank 1.

[0034] The specific movement process of the lower scraper 5 is as follows: The hinge seat 8b pulls the hinge rod 8c to move downward, that is, pulls the sliding column 8e to slide along the arc-shaped chute in the guide slide plate 8d, so that the sliding column 8e drives the lower scraper 5 to move, and then realizes the rotation of the lower scraper 5. Finally, the lower scraper 5 will be attached to the inner wall of the double-shaft drying tank 1. The movement process of the upper scraper 4 is the same as that of the lower scraper 5, and the only difference is the position.

[0035] Driving the middle scraper 3, the upper scraper 4 and the lower scraper 5 to be attached to the inner wall of the double-shaft drying tank 1 through two movements, and the synchronous pulling mechanism 7 cannot be directly used to drive the middle scraper 3, the upper scraper 4 and the lower scraper 5 to be attached to the inner wall of the double-shaft drying tank 1. If only the one-time in-place pushing method of the synchronous pulling mechanism 7 is adopted, it will cause the lower scraper 5 to collide with the inner wall of the double-shaft drying tank 1.

[0036] If the double-shaft drying tank 1 is in a stationary state and the rotating mechanism 9 drives the inner wall scraping mechanism to rotate, after the drug is scraped off and drops vertically, the dropped drug will fall on the inner wall of the bottom cone of the double-shaft drying tank 1, and the lower scraper 5 is still needed to scrape it, so that the drug slowly slides down to the material receiving box 6. The whole process is relatively slow. When the inner wall scraping mechanism rotates, the double-shaft drying tank 1 shakes, which will make the drug slide down faster. Therefore, as Figure 1 and Figure 7As shown in the figure, the rotating mechanism 9 includes a rotating base 9a, a support base 9b, an arc-shaped sliding seat 9c, an arc-shaped sliding rail 9d, a gear box 9e and an arc-shaped gear ring 9f. The synchronous pulling mechanism 7 is fixedly connected to the rotating base 9a. The rotating base 9a is rotatably connected to the support base 9b. The arc-shaped sliding seat 9c is fixedly installed at the bottom of the support base 9b. The arc-shaped sliding seat 9c is slidably connected to the arc-shaped sliding rail 9d. When the double-shaft drying tank 1 swings, it will drive the rotating base 9a to swing together through the synchronous pulling mechanism 7. The rotating base 9a will drive the arc-shaped sliding seat 9c to slide along the arc-shaped sliding rail 9d through the support base 9b, so that during the process of the double-shaft drying tank 1 scraping and rotating, the device can rotate together, enabling the medicine to slide down faster. The arc-shaped gear ring 9f is fixedly installed on the side of the arc-shaped sliding rail 9d. The gear box 9e is fixedly installed on the support base 9b. A driving gear is arranged on one side of the support base 9b. The driving gear meshes with the arc-shaped gear ring 9f. A rotating shaft for driving the rotating base 9a to rotate is arranged at the bottom of the rotating base 9a. The rotating shaft is installed in the gear box 9e. When the driving gear rotates, it will drive the gears in the gear box 9e to move, and finally the rotating shaft at the bottom of the rotating base 9a will rotate, that is, drive the rotating base 9a to rotate. And the rotating base 9a will drive the inner wall scraping mechanism to rotate through the synchronous pulling mechanism 7 to scrape off the medicine adhered to the inner wall of the double-shaft drying tank 1. Among them, the rotation of the driving gear is realized by the double-shaft drying tank 1 driving the driving gear to swing reciprocally.

[0037] Due to the existence of the suction filter head 2, the middle scraper 3, the upper scraper 4 and the lower scraper 5 cannot rotate 360 degrees. And the reciprocating rotation of the middle scraper 3, the upper scraper 4 and the lower scraper 5 driven by the swing of the double-shaft drying tank 1 just meets the requirement of not rotating 360 degrees. If the motor-driven method is adopted, frequent switching of the steering will easily cause damage to the motor. Moreover, the required torque is relatively large, making it difficult to drive the double-shaft drying tank 1 to rotate. However, by driving the inner wall scraping mechanism to rotate through the swing rotation of the double-shaft drying tank 1, the problem of torque does not need to be considered, and the equipment cost is reduced.

[0038] Among them, in order to enable the synchronous pulling mechanism 7 to be in a vertical state when the device is not inserted into the double-shaft drying tank 1, the gear resistance in the gear box 9e can meet the support for the synchronous pulling mechanism 7 to prevent the synchronous pulling mechanism 7 from tilting. And an electric push rod can also be arranged on the side of the support base 9b, and a clamping hole for clamping the output end of the electric push rod is opened on the arc-shaped sliding rail 9d. The vertical fixation of the synchronous pulling mechanism 7 is realized by locking. There are various fixation methods, which can be easily thought of by those skilled in the art and will not be described here.

[0039] In order to be able to drive the two receiving boxes 6 to approach or move away simultaneously, such as Figure 8As shown in the figure, the synchronous pulling mechanism 7 includes a rotating shaft 7a, a driving motor 7b and a guide post 7c. The driving motor 7b is fixedly installed on the rotating seat 9a. One end of the rotating shaft 7a is connected to the output end of the driving motor 7b. The driving motor 7b works to drive the rotating shaft 7a to rotate. There are screw tubes opened in the middle of the two material receiving boxes 6. An external thread meshing with the screw tube is provided on the outer edge of the rotating shaft 7a. The tops of the two guide posts 7c are fixedly connected to the material receiving box 6. A guide hole for the vertical sliding of the guide post 7c is opened on the rotating seat 9a. By rotating the driving motor 7b, the driving motor 7b pushes the two material receiving boxes 6 to move closer or farther synchronously through the thread on the rotating shaft 7a. Among them, when the rotating shaft 7a rotates, due to the guiding and limiting of the guide post 7c on the material receiving box 6 at the bottom, the material receiving box 6 can only slide vertically. And the material receiving box 6 on the top plate can also only slide vertically because of the connection between the middle scraper 3, the upper scraper 4 and the lower scraper 5 and the material receiving box 6 on the top plate, making the material receiving box 6 on the top plate unable to rotate and can only slide vertically.

[0040] In order to make the middle scraper 3 only move horizontally when pushed by the upper scraper 4 and the lower scraper 5, as Figure 1 shown, a collar 10 is sleeved on the outer edge of the rotating shaft 7a. Stop rings for limiting the top plate and the bottom of the collar 10 are provided on the rotating shaft 7a, so that when the rotating shaft 7a rotates, it will not drive the collar 10 to rotate and can make the collar 10 maintain a constant height. Two telescopic tubes 11 are fixedly arranged on the outer edge of the collar 10. One end of the telescopic tube 11 is fixedly connected to the middle scraper 3. When the middle scraper 3 is pushed, it is horizontally guided through the telescopic tube 11, so that the middle scraper 3 can only move horizontally. When the middle scraper 3 is retracted, the telescopic tube 11 will be retracted so that it can pass through the bottom discharge port of the double-shaft drying tank 1.

[0041] In order to pull down the hinge seat 8b, as Figure 5 shown, the pulling-down mechanism 8a includes an electric push rod 8a1 and a connecting frame 8a2. The electric push rod 8a1 is fixedly installed at the bottom of the material receiving box 6. The output end of the electric push rod 8a1 is fixedly connected to the connecting frame 8a2. The connecting frame 8a2 is fixedly connected to the hinge seat 8b. By pushing down the electric push rod 8a1, the connecting frame 8a2 pushes down the hinge seat 8b. A connecting column is provided on the connecting frame 8a2. The top of the connecting column passes through the bottom of the material receiving box 6 and is fixedly connected to the hinge seat 8b.

[0042] As Figure 1 shown, in order to reduce the rotation amplitude of the middle scraper 3, the upper scraper 4 and the lower scraper 5, the middle scraper 3, the upper scraper 4 and the lower scraper 5 are all three and are evenly distributed along the circumferential direction of the double-shaft drying tank 1, so that the middle scraper 3, which originally needed to rotate 370 degrees, now only needs to rotate 170 degrees.

[0043] A pushing mechanism for pushing the inner wall scraping mechanism into the double-shaft drying tank 1 is provided at the bottom of the rotating mechanism 9, and the pushing mechanism is not visible in the figure.

[0044] During use, the pushing mechanism pushes the inner wall scraping mechanism into the double-shaft drying tank 1, and then the synchronous pulling mechanism 7 drives the two receiving boxes 6 to move, so that the middle scraper 3, the upper scraper 4 and the lower scraper 5 move simultaneously, making the middle scraper 3 fit with the inner wall of the middle part of the double-shaft drying tank 1. Then, the two rotating pulling mechanisms 8 respectively drive the lower scraper 5 and the upper scraper 4, so that the lower scraper 5 and the upper scraper 4 fit with the inner wall of the double-shaft drying tank 1, thus completing the installation process.

[0045] Then, the swinging mechanism of the double-shaft drying tank 1 itself is started to make the double-shaft drying tank 1 swing in an arc reciprocally, that is, to drive the inner wall scraping mechanism to swing. Through the rotating mechanism 9, during the swinging of the double-shaft drying tank 1, the inner wall scraping mechanism is driven to rotate, so that the inner wall scraping mechanism cleans the inner wall of the double-shaft drying tank 1, and the medicine under the lid will fall into the receiving box 6 for collection.

[0046] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A material-changing and cleaning device for a double-cone dryer, characterized in that, it includes an inner wall scraping mechanism for cleaning and collecting the adhered medicine on the inner wall of the double-shaft drying tank (1) and a rotating mechanism (9) for driving the inner wall scraping mechanism to rotate along the axis of the double-shaft drying tank (1); The inner wall scraping mechanism includes a middle scraper (3), an upper scraper (4), a lower scraper (5), a synchronous pulling and moving mechanism (7) and two material receiving boxes (6). The synchronous pulling and moving mechanism (7) is installed at the top of the rotating mechanism (9). The synchronous pulling and moving mechanism (7) is used to synchronously pull the two material receiving boxes (6). The two material receiving boxes (6) are installed on the synchronous pulling and moving mechanism (7). One ends of the upper scraper (4) and the lower scraper (5) are respectively hinged to both ends of the middle scraper (3). The middle scraper (3) is movably installed on the synchronous pulling and moving mechanism (7) horizontally. The other ends of the upper scraper (4) and the lower scraper (5) are hinged to the two material receiving boxes (6). The diameters of the feeding port and the discharging port of the double-shaft drying tank (1) are equal to the outer diameter of the material receiving box (6); A rotating pulling and moving mechanism (8) for pulling the lower scraper (5) or the upper scraper (4) to rotate along the hinge joint with the middle scraper (3) is arranged in the two material receiving boxes (6). The rotating pulling and moving mechanism (8) includes a lower pulling mechanism (8a), a hinge seat (8b), a hinge rod (8c), a guide sliding plate (8d) and a sliding column (8e). The lower pulling mechanism (8a) is installed in the material receiving box (6). The hinge seat (8b) is located in the material receiving box (6). The lower pulling mechanism (8a) is used to pull the hinge seat (8b) to move vertically. The guide sliding plate (8d) is fixedly installed on the inner wall of the material receiving box (6). The sliding column (8e) is hinged to one end of the lower scraper (5). An arc-shaped sliding groove for the sliding column (8e) to slide is arranged in the guide sliding plate (8d). One end of the hinge rod (8c) is hinged to the sliding column (8e), and the other end of the hinge rod (8c) is hinged to the hinge seat (8b).

2. A material-changing and cleaning device for a double-cone dryer according to claim 1, characterized in that, the rotating mechanism (9) includes a rotating seat (9a), a support seat (9b), an arc-shaped sliding seat (9c), an arc-shaped sliding rail (9d), a gear box (9e) and an arc-shaped gear ring (9f). The synchronous pulling and moving mechanism (7) is fixedly connected to the rotating seat (9a). The rotating seat (9a) is rotatably connected to the support seat (9b). The arc-shaped sliding seat (9c) is fixedly installed at the bottom of the support seat (9b). The arc-shaped sliding seat (9c) is slidably connected to the arc-shaped sliding rail (9d). The arc-shaped gear ring (9f) is fixedly installed on the side of the arc-shaped sliding rail (9d). The gear box (9e) is fixedly installed on the support seat (9b). A driving gear is arranged on one side of the support seat (9b). The driving gear meshes with the arc-shaped gear ring (9f). A rotating shaft for driving the rotating seat (9a) to rotate is arranged at the bottom of the rotating seat (9a). The rotating shaft is installed in the gear box (9e).

3. A material-changing and cleaning device for a double-cone dryer according to claim 2, characterized in that, The synchronous pulling mechanism (7) includes a rotating shaft (7a), a driving motor (7b), and a guide post (7c). The driving motor (7b) is fixedly installed on the rotating base (9a). One end of the rotating shaft (7a) is connected to the output end of the driving motor (7b). A screw tube is provided in the middle of the two material receiving boxes (6). An external thread meshing with the screw tube is provided on the outer edge of the rotating shaft (7a). The tops of the two guide posts (7c) are fixedly connected to the material receiving box (6). A guide hole for the vertical sliding of the guide post (7c) is provided on the rotating base (9a).

4. A material changing and cleaning device for a double-cone dryer according to claim 3, characterized in that, A collar (10) is sleeved on the outer edge of the rotating shaft (7a). Stop rings for limiting the top and bottom of the collar (10) are provided on the rotating shaft (7a). When the rotating shaft (7a) rotates, two telescopic tubes (11) are fixedly arranged on the outer edge of the collar (10). One end of the telescopic tube (11) is fixedly connected to the middle scraper (3).

5. A material changing and cleaning device for a double-cone dryer according to claim 1, characterized in that, The downward pulling mechanism (8a) includes an electric push rod (8a1) and a connecting frame (8a2). The electric push rod (8a1) is fixedly installed at the bottom of the material receiving box (6). The output end of the electric push rod (8a1) is fixedly connected to the connecting frame (8a2). The connecting frame (8a2) is fixedly connected to the hinge seat (8b).

6. A material changing and cleaning device for a double-cone dryer according to claim 1, characterized in that, The middle scraper (3), the upper scraper (4), and the lower scraper (5) are all three and are evenly distributed along the circumferential direction of the double-shaft drying tank (1).

7. A material changing and cleaning device for a double-cone dryer according to claim 1, characterized in that, A pushing mechanism for pushing the inner wall scraping mechanism into the double-shaft drying tank (1) is provided at the bottom of the rotating mechanism (9).

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