A solid preparation spray granulation dryer

Abstract

The present invention relates to the technical field of material drying, and in particular to a solid preparation spray granulation dryer, comprising a drying cylinder with an opening at the lower end, the outer surface of the drying cylinder being connected to a supporting device; and further comprising a material dropping device, the material dropping device being connected to the inner wall of the drying cylinder near the lower end, the material dropping device comprising a conical frame fixedly connected to the lower end of the inner wall of the drying cylinder through a plurality of circumferentially evenly distributed connecting columns. The material dropping device used in the present invention cooperates with the opening device to continuously screen the dried material particles, without the need to screen the collected material particles again, and the screened material particles can be collected in a centralized manner, effectively improving the efficiency of material particle collection.

Description

Technical Field

[0001] The invention relates to the technical field of material drying, in particular to a solid preparation spray granulation dryer. Background Art

[0002] Solid preparation spray granulation and drying technology is an efficient and rapid granulation and drying method, which is widely used in pharmaceutical, chemical, food and other industries. This technology sprays liquid materials into fine droplets, and then quickly dries to form particles. It has the advantages of high production efficiency, good particle quality, and easy large-scale industrial production.

[0003] Spray granulation and drying of solid preparations are usually carried out in a dryer. When the dryer is used for drying, it is usually necessary to prepare the liquid raw materials to be processed first, and then send the prepared liquid raw materials into the spray system. The spray system atomizes the liquid raw materials into fine droplets through a nozzle under high pressure and sprays them into the dryer. At the same time, heated air is introduced into the dryer from the top or side. The hot air quickly evaporates the water. As the water evaporates quickly, the droplets gradually solidify into particles. The particles after drying move downward with the air flow and are recovered by the collector at the bottom. However, during the drying process of the liquid raw materials, due to factors such as the temperature, humidity and flow rate of the hot air, significant size differences are likely to occur between the particles. In order to meet the requirements of product specifications, the collected particles need to be screened separately, which increases the processing steps after the particles are collected and reduces the efficiency of the collection of the particles after drying. Summary of the invention

[0004] Based on this, it is necessary to provide a solid preparation spray granulation dryer, which aims to solve the problems caused by the existing dryer when drying the material liquid.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: a solid preparation spray granulation dryer, comprising: a drying cylinder with an opening at the lower end, and a supporting device connected to the outer surface of the drying cylinder.

[0006] It also includes a material dropping device, which is connected to the inner wall of the drying cylinder near the lower end. The material dropping device includes a conical frame fixedly connected to the lower end of the inner wall of the drying cylinder through a plurality of circumferentially evenly distributed connecting columns, the tip of the conical frame faces upward, and a filter screen is slidably connected between the conical frame and the drying cylinder. A lifting mechanism is connected to the filter screen, and a rotating mechanism is arranged in the middle of the lifting mechanism.

[0007] The lifting mechanism includes two symmetrically distributed sliding through holes opened on the vertical section of the conical frame, a connecting branch chain is connected in the sliding through holes, a lifting ring is commonly connected between the two connecting branch chains, and two sliding branch chains symmetrically distributed along the axis of the lifting ring are connected to the side wall of the lifting ring, a baffle rod is provided on the side of the sliding branch chain away from the rotating mechanism, the baffle rod is fixedly connected to the inner wall of the drying cylinder, and an inclined surface is provided on the upper end of the baffle rod.

[0008] It also includes an opening device, which is connected to the wall of the drying cylinder. The opening device includes an annular slide groove opened in the middle of the inner wall of the drying cylinder. The wall of the drying cylinder is provided with a plurality of circumferentially evenly distributed drop holes at the annular slide groove. An annular baffle is slidably connected in the annular slide groove, and a lifting mechanism is connected to the upper end of the annular baffle.

[0009] The invention also comprises a first collecting device, which is connected to the lower end of the drying cylinder and is used for collecting small-volume particles.

[0010] The drying cylinder further comprises a second collecting device, which is connected to the annular outer surface of the drying cylinder and is used for collecting large-volume particles.

[0011] According to an embodiment of the present invention, the blanking device also includes a cylindrical rod that passes through and is rotatably connected to the top of the conical frame, the top of the cylindrical rod is integrally formed with a conical protrusion, and the top of the cylindrical rod is connected to a plurality of toggle mechanisms that are evenly distributed circumferentially and located above the conical frame.

[0012] According to an embodiment of the present invention, the rotating mechanism includes a rotating rod installed at the lower end of the cylindrical rod, two symmetrically distributed spiral grooves are opened on the annular surface of the rotating rod, and the upper end of the spiral groove is provided with a slope. The lower end of the rotating rod is fixedly connected to the output shaft of the driving motor, and the driving motor is fixedly connected to the conical frame through a connecting rod.

[0013] According to an embodiment of the present invention, the connecting branch chain includes a strip plate slidably connected in the sliding through hole, one end of the strip plate is fixedly connected to the filter screen, the other end of the strip plate is fixedly connected to the outer ring wall of the lifting ring, a barrier film is installed between the surface of the strip plate and the wall of the sliding through hole, and a connecting spring is installed between the upper end of the strip plate and the top wall of the sliding through hole.

[0014] According to an embodiment of the present invention, the sliding branch chain includes a moving column which is slidably connected to the side wall of the lifting ring and is in a horizontal state. The end of the moving column away from the rotating rod is integrally formed with an arc-shaped protrusion, and the end of the moving column close to the rotating rod is slidably connected to a stepped round rod. A return spring is installed between the middle section of the stepped round rod and the moving column. The end of the stepped round rod close to the rotating rod is rotatably connected to a columnar rod, the columnar rod is slidably matched with the corresponding spiral groove, and the end of the columnar rod away from the stepped round rod is integrally formed with a hemispherical protrusion.

[0015] According to an embodiment of the present invention, the lifting mechanism includes a plurality of L-shaped columns evenly distributed circumferentially and installed on the upper end of the annular baffle, a lifting ring is commonly installed between the horizontal sections of the plurality of L-shaped columns, and a telescopic spring is installed between the upper end of the horizontal section of the L-shaped column and the top wall of the annular slide groove.

[0016] According to an embodiment of the present invention, the toggle mechanism includes a scraping rod installed at the upper end of the cylindrical rod and in an inclined state, a connecting plate in a horizontal state is installed at the lower end of the scraping rod, a triangular protrusion is integrally formed at the upper end of the connecting plate, a lifting rod in a vertical state is slidably penetrated and connected to the middle part of the connecting plate, a right-angled trapezoidal plate is installed at the lower end of the lifting rod, and a semi-cylinder is installed at the upper end of the lifting rod.

[0017] According to an embodiment of the present invention, the first collecting device includes two first connecting rings coaxially arranged below the drying cylinder, the first connecting ring located on the outside is connected to the lower end of the inner wall of the drying cylinder by bolts, and the first connecting ring located on the inside is connected to the lower end of the outer wall of the conical frame by bolts, annular inclined surfaces are provided on the inner arc surface of the first connecting ring located on the outside and the outer arc surface of the first connecting ring located on the inside, and a first collecting bag is commonly installed at the lower ends of the two first connecting rings.

[0018] According to an embodiment of the present invention, the second collecting device includes two second connecting rings which are symmetrically sleeved on the outer surface of the drying cylinder, the two second connecting rings are respectively located on the upper and lower sides of the plurality of drop holes, the second connecting rings are threadedly connected to the drying cylinder by bolts, and a second collecting bag is commonly installed on the two second connecting rings.

[0019] According to an embodiment of the present invention, the supporting device comprises two positioning columns installed on the outer surface of the drying cylinder and symmetrically distributed along the axis of the drying cylinder. The positioning columns are L-shaped and an annular bottom plate is commonly installed at the lower ends of the two positioning columns.

[0020] In summary, the present invention includes the following beneficial technical effects: 1. The dropping device used in the present invention cooperates with the opening device to continuously screen the dry material particles, without the need to screen the collected material particles again, and the screened material particles can be collected centrally, effectively improving the efficiency of material particle collection.

[0021] 2. The material dropping device used in the present invention can spread out the accumulated material particles, and the filter screen can vibrate, thereby shaking out the material particles stuck in the filter holes of the filter screen, avoiding clogging of the filter screen, ensuring the effect of material particle screening, and improving the efficiency of material particle dropping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of the present invention from a first viewing angle is shown.

[0024] Figure 2 A schematic diagram of the second viewing angle stereoscopic structure of the present invention is shown.

[0025] Figure 3 A front view of the present invention is shown.

[0026] Figure 4 A left side view of the present invention is shown.

[0027] Figure 5 Shows Figure 3 Sectional view of AA.

[0028] Figure 6 Shows Figure 5 Magnified view of the middle N region.

[0029] Figure 7 Shows Figure 4 Cross-sectional view of BB.

[0030] Figure 8 Shows Figure 7 Magnified view of the X area in the middle.

[0031] Fig. 9 The schematic diagram of the structure of part of the drying cylinder, part of the blanking device and the opening device of the present invention is shown.

[0032] Fig.10 The schematic diagram of the structure of the lifting mechanism, the rotating mechanism, the cylindrical rod and the toggle mechanism is shown.

[0033] The above drawings include the following reference numerals: 1. drying cylinder; 2. supporting device; 21. positioning column; 22. annular bottom plate; 3. blanking device; 31. conical frame; 32. filter screen; 33. lifting mechanism; 331. sliding through hole; 332. connecting branch chain; 3321. strip plate; 3322. barrier film; 3323. connecting spring; 333. lifting ring; 334. sliding branch chain; 3341. moving column; 3342. stepped round rod; 3343. reset spring; 3344. columnar rod; 335. stop rod; 34. rotating mechanism; 341. rotating Moving rod; 342, spiral groove; 343, driving motor; 35, cylindrical rod; 36, toggle mechanism; 361, scraper rod; 362, connecting plate; 363, lifting rod; 364, right-angle trapezoidal plate; 365, semi-cylinder; 4, opening device; 41, annular slide groove; 42, drop hole; 43, annular baffle; 44, lifting mechanism; 441, L-shaped column; 442, lifting ring; 443, telescopic spring; 5, first collecting device; 51, first connecting ring; 52, first collecting bag; 6, second collecting device; 61, second connecting ring; 62, second collecting bag. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0035] See also Figure 1-Figure 4 A solid preparation spray granulation dryer comprises a drying cylinder 1 with an opening at the lower end, and a supporting device 2 is connected to the outer surface of the drying cylinder 1.

[0036] See also Figure 1 and Figure 2 The supporting device 2 includes two positioning columns 21 installed on the outer surface of the drying cylinder 1 and symmetrically distributed along the axis of the drying cylinder 1. The positioning columns 21 are L-shaped structures, and an annular bottom plate 22 is commonly installed at the lower ends of the two positioning columns 21.

[0037] During specific operation, the drying cylinder 1 is lifted to the working position by the existing crane, and the drying cylinder 1 is installed at the working position by two positioning columns 21 and the annular bottom plate 22. The top of the drying cylinder 1 is equipped with a feeding device, which atomizes the existing material liquid and sprays it into the drying cylinder 1. At the same time, hot air enters the drying cylinder 1 through the feeding device and dries the atomized material liquid.

[0038] See also Figure 2 and Figure 5 The solid preparation spray granulation dryer also includes a material dropping device 3, which is connected to the inner wall of the drying cylinder 1 near the lower end. The material dropping device 3 includes a conical frame 31 fixedly connected to the lower end of the inner wall of the drying cylinder 1 through a plurality of circumferentially evenly distributed connecting columns.

[0039] See also Figure 1 , Figure 7 and Figure 8 The solid preparation spray granulation dryer also includes a first collecting device 5, which is connected to the lower end of the drying cylinder 1 and is used to collect small-volume particles. The first collecting device 5 includes two first connecting rings 51 coaxially arranged below the drying cylinder 1, the first connecting ring 51 located on the outside is connected to the lower end of the inner wall of the drying cylinder 1 by bolts, and the first connecting ring 51 located on the inside is connected to the lower end of the outer wall of the conical frame 31 by bolts. The inner arc surface of the first connecting ring 51 located on the outside and the outer arc surface of the first connecting ring 51 located on the inside are both provided with annular inclined surfaces, and a first collecting bag 52 is commonly installed at the lower ends of the two first connecting rings 51.

[0040] Before work, the two first connecting rings 51 are connected to the inner wall of the drying cylinder 1 and the lower end of the outer wall of the conical frame 31 respectively through a plurality of bolts, so as to fix the first collecting bag 52 to the lower ends of the drying cylinder 1 and the conical frame 31 .

[0041] See also Figure 5 , Figure 8 and Fig. 9 The solid preparation spray granulation dryer also includes an opening device 4, which is connected to the wall of the drying cylinder 1. The opening device 4 includes an annular chute 41 opened in the middle of the inner wall of the drying cylinder 1, and the wall of the drying cylinder 1 is provided with a plurality of circumferentially evenly distributed drop holes 42 at the annular chute 41.

[0042] See also Figure 1 , Figure 8 and Fig. 9 The solid preparation spray granulation dryer also includes a second collecting device 6, which is connected to the annular outer surface of the drying cylinder 1 and is used to collect large-volume particles. The second collecting device 6 includes two second connecting rings 61 symmetrically sleeved on the outer surface of the drying cylinder 1, and the two second connecting rings 61 are respectively located on the upper and lower sides of the plurality of drop holes 42. The second connecting ring 61 is threadedly connected to the drying cylinder 1 by bolts, and a second collecting bag 62 is commonly installed on the two second connecting rings 61.

[0043] Before work, two second connecting rings 61 are installed on the outer surface of the drying cylinder 1 by means of bolts. The two second connecting rings 61 fix the second collecting bag 62 on the outer sides of the plurality of drop holes 42 .

[0044] See also Figure 5 , Figure 7 and Figure 8 The tip of the conical frame 31 faces upward, and a filter screen 32 is slidably connected between the conical frame 31 and the drying cylinder 1. A lifting mechanism 33 is connected to the filter screen 32, and a rotating mechanism 34 is arranged in the middle of the lifting mechanism 33. The blanking device 3 also includes a cylindrical rod 35 that passes through and is rotatably connected to the top of the conical frame 31, and a conical protrusion is integrally formed on the top of the cylindrical rod 35.

[0045] See also Figure 5 and Fig.10 The rotating mechanism 34 includes a rotating rod 341 installed at the lower end of the cylindrical rod 35. Two symmetrically distributed spiral grooves 342 are provided on the annular surface of the rotating rod 341. The upper end of the spiral groove 342 is provided with a slope. The lower end of the rotating rod 341 is fixedly connected to the output shaft of the driving motor 343. The driving motor 343 is fixedly connected to the conical frame 31 through a connecting rod.

[0046] Initially, the drive motor 343 is connected to the existing power supply, and the dried material particles fall onto the filter screen 32 by their own gravity. The filter screen 32 is an annular structure and the cross section is a V-shape with the opening facing downward. The filter screen 32 screens and filters the material particles. The screened material particles fall into the first collecting bag 52 from between the conical frame 31 and the drying cylinder 1. The drive motor 343 is started while the material liquid is drying, and the drive motor 343 rotates slowly. The drive motor 343 drives the rotating rod 341 to rotate, and the rotating rod 341 drives the two spiral grooves 342 to rotate.

[0047] See also Figure 2 , Figure 6 and Figure 8 The lifting mechanism 33 includes two symmetrically distributed sliding through holes 331 opened on the vertical section of the conical frame 31, and a connecting branch chain 332 is connected in the sliding through hole 331. A lifting ring 333 is commonly connected between the two connecting branch chains 332. Two sliding branch chains 334 symmetrically distributed along the axis of the lifting ring 333 are connected to the side wall of the lifting ring 333. A blocking rod 335 is provided on the side of the sliding branch chain 334 away from the rotating mechanism 34. The blocking rod 335 is fixedly connected to the inner wall of the drying cylinder 1, and an inclined surface is provided on the upper end of the blocking rod 335.

[0048] See also Figure 5 and Figure 6The sliding branch chain 334 includes a moving column 3341 that is slidably connected to the side wall of the lifting ring 333 and is in a horizontal state. The end of the moving column 3341 away from the rotating rod 341 is integrally formed with an arc-shaped protrusion, and the end of the moving column 3341 close to the rotating rod 341 is slidably connected with a stepped round rod 3342, and a return spring 3343 is installed between the middle section of the stepped round rod 3342 and the moving column 3341. The end of the stepped round rod 3342 close to the rotating rod 341 is rotatably connected with a columnar rod 3344, and the columnar rod 3344 is slidably matched with the corresponding spiral groove 342, and the end of the columnar rod 3344 away from the stepped round rod 3342 is integrally formed with a hemispherical protrusion.

[0049] Initially, the two columnar rods 3344 are located at the lower ends of the corresponding spiral grooves 342. During operation, the two rotating spiral grooves 342 drive the two columnar rods 3344 to rotate, the two columnar rods 3344 drive the two stepped round rods 3342 to rise, the two stepped round rods 3342 drive the two movable columns 3341 to rise, and the two movable columns 3341 drive the lifting ring 333 to rise.

[0050] See also Figure 7 and Figure 8 The connecting branch chain 332 includes a strip plate 3321 slidably connected to the sliding through hole 331, one end of the strip plate 3321 is fixedly connected to the filter screen 32, the other end of the strip plate 3321 is fixedly connected to the outer ring wall of the lifting ring 333, a blocking film 3322 is installed between the surface of the strip plate 3321 and the hole wall of the sliding through hole 331, and a connecting spring 3323 is installed between the upper end of the strip plate 3321 and the top wall of the sliding through hole 331.

[0051] During operation, the rising lifting ring 333 drives the filter screen 32 to rise through the two strip plates 3321, and the filter screen 32 drives the larger material particles to rise. At the same time, the two strip plates 3321 squeeze the two connecting springs 3323, and the baffle film 3322 seals the sliding through hole 331 to prevent material particles from falling out of the sliding through hole 331. As the two spiral grooves 342 rotate, the lifting ring 333 gradually drives the filter screen 32 to rise. When the two columnar rods 3344 move to the upper ends of the two spiral grooves 342, the two spiral The slope at the upper end of the groove 342 pushes the hemispherical protrusion on the columnar rod 3344, and the columnar rod 3344 drives the movable column 3341 to slide on the lifting ring 333 through the stepped round rod 3342 and the reset spring 3343 until the columnar rod 3344 moves out of the spiral groove 342, and the spiral groove 342 releases the limit on the columnar rod 3344. At this time, the two squeezed connecting springs 3323 reset and drive the two strip plates 3321 to descend, and the two strip plates 3321 drive the filter screen 32 to descend until the two strip plates 3321 and the two sliding passages are aligned. After the bottom wall of the hole 331 is in contact, the filter screen 32 vibrates, thereby shaking out the material particles stuck in the filter holes of the filter screen 32, avoiding clogging of the filter screen 32 and ensuring the effect of material particle screening. At the same time, the two strip plates 3321 drive the lifting ring 333 to descend, and the lifting ring 333 drives the two moving columns 3341 to descend. When the moving column 3341 falls to the inclined surface on the blocking rod 335, the inclined surface guides the moving column 3341 and pushes it toward the rotating rod 341. The elastic force of the connecting spring 3323 is greater than the return spring 3341. 343 has an elastic force. If the spiral groove 342 on the rotating rod 341 does not move to the columnar rod 3344, the movable column 3341 squeezes the return spring 3343 to avoid affecting the descent of the lifting ring 333. When the spiral groove 342 on the rotating rod 341 moves to the columnar rod 3344, the squeezed return spring 3343 drives the columnar rod 3344 to enter the spiral groove 342 through the stepped round rod 3342, thereby realizing the function of the lifting ring 333 rising again, and then realizing the reciprocating rise and vibration function of the filter screen 32.

[0052] See also Figure 5 , Figure 7 , Figure 8 and Fig. 9 The top of the cylindrical rod 35 is connected to a plurality of toggle mechanisms 36 that are evenly distributed in the circumference and located above the conical frame 31. The toggle mechanism 36 includes a scraper rod 361 installed at the upper end of the cylindrical rod 35 and in an inclined state. A connecting plate 362 in a horizontal state is installed at the lower end of the scraper rod 361. A triangular protrusion is integrally formed at the upper end of the connecting plate 362. A lifting rod 363 in a vertical state is slidably penetrated and connected in the middle of the connecting plate 362. A right-angled trapezoidal plate 364 is installed at the lower end of the lifting rod 363, and a semi-cylinder 365 is installed at the upper end of the lifting rod 363.

[0053] During specific operation, the rotating rod 341 rotates and drives the cylindrical rod 35 to rotate, the cylindrical rod 35 drives the multiple connecting plates 362 to rotate, the multiple connecting plates 362 drive the lifting rod 363 to rotate through the multiple connecting plates 362, and the multiple lifting rods 363 drive the right-angled trapezoidal plate 364 to rotate, the inclined surface at the lower end of the right-angled trapezoidal plate 364 fits with the upper end of the filter screen 32, and the rotating right-angled trapezoidal plate 364 scrapes the material particles accumulated on the upper end of the filter screen 32, thereby spreading the accumulated material particles, avoiding blockage of the material particles and improving the efficiency of the material particles falling.

[0054] See also Figure 8 and Fig. 9 An annular baffle plate 43 is slidably connected in the annular groove 41, and a lifting mechanism 44 is connected to the upper end of the annular baffle plate 43. The lifting mechanism 44 includes a plurality of L-shaped columns 441 evenly distributed in the circumference and installed on the upper end of the annular baffle plate 43. A lifting ring 442 is commonly installed between the horizontal sections of the plurality of L-shaped columns 441, and a telescopic spring 443 is installed between the upper end of the horizontal section of the L-shaped column 441 and the top wall of the annular groove 41.

[0055] During specific operation, the filter screen 32 in the rising process drives the plurality of right-angled trapezoidal plates 364 to rise, and the plurality of right-angled trapezoidal plates 364 drive the plurality of semi-cylinders 365 to rise through the plurality of lifting rods 363, and the plurality of rising semi-cylinders 365 drive the lifting ring 442 to rise, and the lifting ring 442 drives the annular baffle plate 43 to rise in the annular chute 41 through the plurality of L-shaped columns 441, thereby opening the plurality of drop holes 42, and at the same time the L-shaped columns 441 squeeze the telescopic springs 443, and the larger material particles on the filter screen 32 are lifted by their own gravity and the drying The hot air is blown into the multiple drop holes 42, and then enters the second collecting bag 62 from the multiple drop holes 42. The upper and lower ends of the lifting ring 442 are provided with annular slopes to facilitate the drop of material particles. When the filter screen 32 is lowered, the multiple squeezed telescopic springs 443 drive the multiple L-shaped columns 441 to reset, and the multiple L-shaped columns 441 drive the annular baffle 43 to descend and re-seal the multiple drop holes 42, thereby realizing the function of screening the dry material particles. Repeat this step until all the material particles are screened and the material drying is completed.

[0056] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A solid preparation spray granulation dryer, characterized in that: It comprises a drying cylinder (1) with an opening at the lower end, the outer surface of the drying cylinder (1) being connected to a supporting device (2); and further comprises: A material dropping device (3) is connected to the inner wall of the drying cylinder (1) near the lower end, the material dropping device (3) comprises a conical frame (31) fixedly connected to the lower end of the inner wall of the drying cylinder (1) via a plurality of connecting columns, a filter screen (32) is slidably connected between the conical frame (31) and the drying cylinder (1), a lifting mechanism (33) is connected to the filter screen (32), and a rotating mechanism (34) is provided in the middle of the lifting mechanism (33); The lifting mechanism (33) comprises two symmetrically distributed sliding through holes (331) opened on the vertical section of the conical frame (31); a connecting branch chain (332) is connected in the sliding through hole (331); a lifting ring (333) is commonly connected between the two connecting branch chains (332); two sliding branch chains (334) symmetrically distributed along the axis of the lifting ring (333) are connected to the side wall of the lifting ring (333); a blocking rod (335) is provided on the side of the sliding branch chain (334) away from the rotating mechanism (34); and the blocking rod (335) is fixedly connected to the inner wall of the drying cylinder (1); An opening device (4) is connected to the wall of the drying cylinder (1), the opening device (4) comprises an annular chute (41) provided in the middle of the inner wall of the drying cylinder (1), a plurality of circumferentially evenly distributed drop holes (42) are provided on the wall of the drying cylinder (1) at the annular chute (41), an annular baffle (43) is slidably connected in the annular chute (41), and a lifting mechanism (44) is connected to the upper end of the annular baffle (43); A first collecting device (5) connected to the lower end of the drying cylinder (1) and used to collect particles whose size is smaller than the filter hole size of the filter screen (32); A second collecting device (6), connected to the annular outer surface of the drying cylinder (1) and used to collect particles whose size is larger than the filter hole size of the filter screen (32); The blanking device (3) further comprises a cylindrical rod (35) penetrating through and rotatably connected to the top of the conical frame (31); a conical protrusion is integrally formed on the top of the cylindrical rod (35); and a plurality of circumferentially evenly distributed toggle mechanisms (36) located above the conical frame (31) are connected to the top of the cylindrical rod (35); The rotating mechanism (34) comprises a rotating rod (341) mounted at the lower end of the cylindrical rod (35); two symmetrically distributed spiral grooves (342) are provided on the annular surface of the rotating rod (341); the upper end of the spiral groove (342) is provided with a slope; the lower end of the rotating rod (341) is fixedly connected to the output shaft of a driving motor (343); and the driving motor (343) is fixedly connected to the conical frame (31) via a connecting rod; The sliding branch chain (334) includes a moving column (3341) which is slidably connected to the side wall of the lifting ring (333) and is in a horizontal state. The end of the moving column (3341) away from the rotating rod (341) is integrally formed with an arc-shaped protrusion. The end of the moving column (3341) close to the rotating rod (341) is slidably connected to a stepped round rod (3342). A return spring (3343) is installed between the middle section of the stepped round rod (3342) and the moving column (3341). The end of the stepped round rod (3342) close to the rotating rod (341) is rotatably connected to a columnar rod (3344). The columnar rod (3344) is slidably matched with the corresponding spiral groove (342). The end of the columnar rod (3344) away from the stepped round rod (3342) is integrally formed with a hemispherical protrusion.

2. A solid preparation spray granulation dryer according to claim 1, characterized in that: The connecting branch chain (332) comprises a strip plate (3321) slidably connected in the sliding through hole (331); one end of the strip plate (3321) is fixedly connected to the filter screen (32); the other end of the strip plate (3321) is fixedly connected to the outer ring wall of the lifting ring (333); a barrier film (3322) is installed between the surface of the strip plate (3321) and the hole wall of the sliding through hole (331); and a connecting spring (3323) is installed between the upper end of the strip plate (3321) and the top wall of the sliding through hole (331).

3. A solid preparation spray granulation dryer according to claim 1, characterized in that: The lifting mechanism (44) comprises a plurality of L-shaped columns (441) uniformly distributed in the circumferential direction and mounted on the upper end of the annular baffle (43); a lifting ring (442) is commonly mounted between the horizontal sections of the plurality of L-shaped columns (441); and a telescopic spring (443) is mounted between the upper end of the horizontal section of the L-shaped column (441) and the top wall of the annular slide groove (41).

4. A solid preparation spray granulation dryer according to claim 1, characterized in that: The toggle mechanism (36) comprises a scraper rod (361) which is installed at the upper end of the cylindrical rod (35) and is in an inclined state. A connecting plate (362) in a horizontal state is installed at the lower end of the scraper rod (361). A triangular protrusion is integrally formed at the upper end of the connecting plate (362). A lifting rod (363) in a vertical state is slidably penetrated and connected in the middle of the connecting plate (362). A right-angled trapezoidal plate (364) is installed at the lower end of the lifting rod (363). A semi-cylinder (365) is installed at the upper end of the lifting rod (363).

5. A solid preparation spray granulation dryer according to claim 1, characterized in that: The first collecting device (5) comprises two first connecting rings (51) coaxially arranged below the drying cylinder (1); the first connecting ring (51) located on the outside is connected to the lower end of the inner wall of the drying cylinder (1) by bolts, and the first connecting ring (51) located on the inside is connected to the lower end of the outer wall of the conical frame (31) by bolts; annular inclined surfaces are provided on the inner arc surface of the first connecting ring (51) located on the outside and the outer arc surface of the first connecting ring (51) located on the inside, and a first collecting bag (52) is commonly installed at the lower ends of the two first connecting rings (51).

6. A solid preparation spray granulation dryer according to claim 1, characterized in that: The second collecting device (6) comprises two second connecting rings (61) which are symmetrically sleeved on the outer surface of the drying cylinder (1) in an upper and lower manner, the two second connecting rings (61) are respectively located on the upper and lower sides of the plurality of drop holes (42), the second connecting rings (61) are threadedly connected to the drying cylinder (1) via bolts, and a second collecting bag (62) is commonly mounted on the two second connecting rings (61).

7. A solid preparation spray granulation dryer according to claim 1, characterized in that: The supporting device (2) comprises two positioning columns (21) mounted on the outer surface of the drying cylinder (1) and symmetrically distributed along the axis of the drying cylinder (1); the positioning columns (21) are L-shaped structures; and an annular bottom plate (22) is commonly mounted at the lower ends of the two positioning columns (21).

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