A spray dryer for preparing wormwood extract

Abstract

The present invention relates to a spray dryer for preparing wormwood extract in the technical field of wormwood extract preparation, comprising a shell, a top cover fixedly installed on the top of the shell, an inner liner rotatably arranged inside the shell, a center groove is provided at the top middle position of the inner liner, a rotating seat is rotatably arranged on the inner wall of the center groove, a top groove is provided at the bottom middle position of the top cover, and a rotating drum is rotatably arranged on the inner wall of the top groove, the rotating drum is fixed on the top of the rotating seat, the rotating drum and the inner liner are provided with the same rotating mechanism, and mounting seats are fixed on both sides of the top of the rotating seat. The present invention wraps hot air around the wormwood extract, and preheats the wormwood extract to improve the fluidity of the wormwood extract, change the flow direction, improve the contact efficiency, shorten the drying time, reduce energy consumption, and make the hot air spray in an inclined state, effectively solving the problem of wormwood extract sticking to the wall, and forming a more complete air sweeping structure.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of wormwood extract, and specifically discloses a spray dryer for preparing the wormwood extract. Background Art

[0002] A spray dryer is a drying device that is mainly used to dry products and separate and recycle them. It is suitable for continuous large-scale production and has a fast drying speed. In the preparation process of mugwort extract, dried mugwort medicinal materials are used as raw materials, and water-ethanol is used as the extraction solvent for extraction. After extraction, the residue is discarded, and then the filtered extract is dried using a drying device to obtain mugwort extract powder. The existing spray dryer for preparing mugwort extract has the problem of material sticking to the wall when in use. In order to solve this problem, the traditional design method is to set a scraper structure on the inner wall of the spray dryer to scrape the material and vibrate the material down by vibration. However, when scraping the material by the scraper structure, the inner wall of the dryer will be damaged and the material will adhere to the scraper structure and be difficult to remove. When vibrating the material by vibration, the entire spray dryer will cause mechanical wear, thereby affecting the normal use of the entire dryer.

[0003] In order to solve the above problems, a certain spray dryer in the market adopts the design of air sweeping to remove materials stuck to the wall, and has a certain market share.

[0004] After searching, the invention patent with the authorization announcement number CN116135276B discloses a spray dryer and its air sweeping device, the air sweeping rod is partially sleeved with a water retaining sleeve in the discharge section of the drying tower, the protruding end of the air sweeping rod extending downward after passing through the sealing structure is connected to the high-pressure blower, an interface is provided on the side of the protruding end, an air seal inlet is provided on the side of the sealing structure, the interface is connected to the air seal inlet through a pipeline, and the top of the sealing structure is connected to the lower opening of the first retaining sleeve; the rolling structure includes a fixed shaft, a bearing and a roller assembly, an air channel is provided in the fixed shaft, and there is an installation gap between the fixed shaft and the roller assembly, and the installation gap is connected to the inside of the air sweeping rod through the air channel; the spray dryer of the present invention includes an air sweeping device. The air sweeping rod of the present invention introduces the airflow between the water retaining sleeve and the air sweeping rod to prevent the fine powder in the drying tower from entering the gap and the transmission box; the air channel is provided to connect the internal space of the air sweeping rod with the installation gap of the roller assembly to prevent the fine powder from entering the installation gap and jamming the roller assembly.

[0005] Based on the above search and in combination with the prior art, it is found that an air sweeping structure is used in the prior art to solve the problem of material sticking to the wall of the spray dryer. Although this problem can be solved to a certain extent, this type of air sweeping method can only remove the material stuck to the wall of the dryer, and some of the material will also adhere to the air sweeping structure itself, making it impossible to remove the material stuck to the wall. Therefore, the method for solving the problem of material sticking to the wall is not perfect, which affects subsequent processing. Therefore, a spray dryer for preparing mugwort extract is proposed to improve the above problems. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing air sweeping structure for solving the problem of material sticking to the wall can only remove the material stuck to the wall of the dryer, but cannot remove the material adhered to itself, so the method for solving the problem of material sticking to the wall is not perfect, which affects the subsequent processing.

[0007] In order to solve the above problems, the present invention provides a spray dryer for preparing wormwood extract, comprising a shell, a top cover is fixedly installed on the top of the shell, an inner shell is rotatably arranged inside the shell, a center groove is opened at the middle position of the top of the inner shell, a rotating seat is rotatably arranged on the inner wall of the center groove, a top groove is opened at the middle position of the bottom of the top cover, and a rotating drum is rotatably arranged on the inner wall of the top groove, the rotating drum is fixed on the top of the rotating seat, the rotating drum and the inner shell are provided with the same rotating mechanism, mounting seats are fixed on both sides of the top of the rotating seat, and mounting grooves are opened on one side of the mounting seats, and mounting shafts are rotatably arranged on the inner wall of the mounting groove, one end of the mounting shaft is fixedly installed with the same inclined hot air spray hood, and a through hole for the hot air spray hood to pass through is opened in the middle position of the rotating seat, a coil spring is fixedly installed on the outer wall of the mounting shaft and the inner wall of the mounting groove, a liquid collecting cylinder is fixedly installed at the middle position of the inner wall of the hot air spray hood, an atomizing nozzle is fixedly installed at the bottom of the liquid collecting cylinder, and a liquid conveying component is arranged on the top of the liquid collecting cylinder.

[0008] Through the above technical solution: the hot air is sprayed on the inner wall of the inner pot in an inclined state, which effectively solves the problem of mugwort extract sticking to the wall, forms a more complete air sweeping structure, and there will be no phenomenon of mugwort extract sticking to the air sweeping structure.

[0009] The present invention is further configured such that a discharge pipe is fixed at the bottom of the shell, and a discharge valve is arranged at the bottom of the discharge pipe, a second mounting ring is fixed to the inner wall of the shell near the top, and a third mounting ring and a first mounting ring are respectively fixed to the top and bottom of the outer wall of the inner tank, and the first mounting ring and the discharge pipe, and the second mounting ring and the third mounting ring are rotatably connected via a sealed bearing.

[0010] Through the above technical solution, the inner liner is easy to rotate in the shell, ensuring the leakage-proofness of the gap between the inner liner and the shell.

[0011] The present invention is further configured such that a hot air inlet assembly is provided on one side of the shell, and the hot air inlet assembly is composed of a blower, an air filter and a heater connected by pipes, and the exhaust end of the heater is equipped with a first hot air branch pipe penetrating the top cover and a second hot air branch pipe inserted into the bottom of the shell, one end of the first hot air branch pipe is inserted into the interior of the rotating drum, and one end of the first hot air branch pipe is rotatably provided with a connecting air pipe, and a first hose is fixedly installed between the bottom end of the connecting air pipe and the top of the hot air spray hood.

[0012] Through the above technical solution, it is convenient to spray hot air along the hot air spray hood.

[0013] The present invention is further configured such that a recovery component is provided on the other side of the shell, and the recovery component is composed of a cyclone separator, a bag filter and an induced draft fan connected by pipes, a recovery pipe passing through the discharge pipe and inserted into the inner tank is installed at the air inlet end of the cyclone separator, an exhaust pipe is fixed on the recovery pipe, the exhaust pipe is connected to the gap between the shell and the inner tank, and a collection tank is provided at the bottom of the discharge pipe, the bottom of the cyclone separator and the bottom of the bag filter.

[0014] Through the above technical solution: the wormwood extract powder contained in the exhaust gas can be separated and dried completely.

[0015] The present invention is further configured such that the liquid conveying assembly includes a liquid tank arranged on one side of the shell, and a pump body is installed on the top of the liquid tank, the liquid inlet end of the pump body is installed with a liquid extraction pipe inserted in the liquid tank, and the discharge end of the pump body is installed with a feeding pipe passing through the top cover, one end of the feeding pipe is inserted into the interior of the first hot gas branch pipe, and a connecting liquid pipe is rotatably provided at one end of the feeding pipe, a second hose is fixedly installed at the bottom end of the connecting liquid pipe and the top of the liquid collecting cylinder, the connecting liquid pipe is located inside the connecting gas pipe, and the second hose is located inside the first hose.

[0016] Through the above technical solution: it is convenient to discharge the mugwort extract into the spray dryer to form a spray.

[0017] The present invention is further configured such that an annular fixing plate is fixedly mounted on the inner wall of the rotating drum and the outer wall of the connecting air pipe, and reinforcing blocks distributed at equal distances are fixedly mounted on the inner wall of the connecting air pipe and the inner wall of the connecting liquid pipe.

[0018] Through the above technical solution, it is convenient to drive the rotating drum, the connecting air pipe and the connecting liquid pipe to rotate simultaneously.

[0019] The present invention is further configured such that the rotating mechanism includes a motor fixedly mounted on the top of the top cover, and a rotating shaft is fixedly mounted on the output shaft of the motor, a driving gear is fixedly mounted on the outer wall of the rotating shaft, a gear ring is fixedly mounted on the top of the inner tank, and a transmission gear is fixedly mounted on the outer wall of the rotating drum, and the driving gear is meshed with the gear ring and the transmission gear.

[0020] Through the above technical solution, it is convenient to drive the rotating drum and the inner container to rotate simultaneously.

[0021] The present invention is further configured such that blocking plates distributed at equal distances are fixedly mounted on the outer wall of the inner container, and the width of the blocking plates is smaller than the width of the gap between the inner container and the shell.

[0022] Through the above technical solution: the exhaust speed of hot air is slowed down, the heat preservation effect is achieved, and the hot air can stay in the gap between the shell and the inner tank for a longer time.

[0023] The present invention is further configured such that spoilers distributed at equal distances are fixedly mounted on the inner wall of the inner container.

[0024] Through the above technical solution: the flow direction of the hot air and the diffusion range of the hot air are changed, so that the hot air can fully contact with the atomized mugwort extract.

[0025] The present invention is further configured such that the top of the inner wall of the inner container is designed to be spherical, and the bottom of the inner wall of the inner container is designed to be funnel-shaped.

[0026] Through the above technical scheme: the hot air and the atomized mugwort extract can be surrounded to ensure the contact efficiency, and the dry powder can be discharged quickly.

[0027] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art:

[0028] 1. The above-mentioned shell, hot air inlet component, liquid delivery component, liner, rotating drum, connecting air pipe, connecting liquid pipe, first hose, second hose, hot air spray hood, liquid collecting cylinder, atomizing nozzle and coil spring are used to extract the wormwood extract in the liquid tank through the pump body in the liquid delivery component and discharge it into the interior of the liquid collecting cylinder along the feeding pipe, and then atomize and spray it through the atomizing nozzle, and also spray the hot air along the first hot air branch pipe, connecting air pipe, first hose and hot air spray hood. The interior of the liquid collecting cylinder is gradually filled with wormwood extract, thereby increasing the weight of the liquid collecting cylinder, so that the liquid collecting cylinder, atomizing nozzle and hot air spray hood are transformed from inclined to vertical. At this time, the coil spring is unfolded, so that the atomized wormwood extract and hot air are sprayed simultaneously in the vertical direction, and the hot air is wrapped around the wormwood extract, so as to achieve sufficient drying of the wormwood extract.

[0029] 2. By using the above-mentioned hot air inlet component, liquid conveying component, hot air spray hood and liquid collecting cylinder, when the hot air and atomized mugwort extract are sprayed out, the mugwort extract in the feeding pipe, connecting liquid pipe, second hose and liquid collecting cylinder is pre-heated through the first hot air branch pipe, connecting air pipe, first hose and hot air spray hood, which can improve the fluidity of the mugwort extract, shorten the drying time of the entire spray dryer, reduce energy consumption and improve drying efficiency.

[0030] 3. The above-mentioned inner liner, rotating seat, rotating drum, annular plate, reinforcement block, mounting seat and rotating mechanism can drive the inner liner, rotating seat, rotating drum, connecting air pipe, connecting liquid pipe and vertical hot air spray hood and liquid collecting cylinder to rotate simultaneously under the action of the rotating mechanism, and make the rotation direction of the inner liner opposite to the rotation direction of the hot air spray hood and the liquid collecting cylinder, thereby increasing the spray range of the hot air and atomized wormwood extract under the action of centrifugal force, so that the hot air can better contact with the wormwood extract, further accelerating the drying speed.

[0031] 4. The above-mentioned inner liner and spoiler can drive the spoiler to rotate simultaneously when the inner liner rotates, changing the flow direction and diffusion range of the hot air inside the inner liner, so that the hot air can fully contact with the atomized wormwood extract, and further improve the drying speed.

[0032] 5. By using the above-mentioned second hot air branch pipe, shell, inner liner and baffle plate, a part of the hot air can be discharged into the gap between the shell and the inner liner along the second hot air branch pipe, so as to heat the gap between the shell and the inner liner, accelerate the heating speed inside the inner liner, improve the drying efficiency, and slow down the discharge speed of this part of the hot air under the action of the baffle plate, so as to achieve the effect of heat preservation, so that the hot air can stay in the gap between the shell and the inner liner for a longer time.

[0033] 6. By using the above-mentioned liquid conveying component, rotating mechanism and coil spring, when the liquid conveying component has conveyed the wormwood extract, the weight of the liquid collecting cylinder is reduced, thereby reducing the force on the coil spring, so that the hot air spray hood and the liquid collecting cylinder are gradually reset under the resetting action of the coil spring, and the rotating mechanism drives the inner tank and the inclined hot air spray hood to rotate, so that the hot air is sprayed on the inner wall of the inner tank in an inclined state, effectively solving the problem of wormwood extract sticking to the wall, forming a more complete air sweeping structure, and there will be no phenomenon of wormwood extract sticking to the air sweeping structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A system diagram of a spray dryer for preparing an wormwood extract according to the present invention;

[0035] Figure 2 A three-dimensional diagram of a shell of a spray dryer for preparing an wormwood extract according to the present invention;

[0036] Figure 3 A cross-sectional view of a shell of a spray dryer for preparing an wormwood extract according to the present invention;

[0037] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0038] Figure 5This is a schematic diagram of the driving gear and top tank structure of a spray dryer for preparing mugwort extract according to the present invention;

[0039] Figure 6 This is a schematic diagram of the central tank structure of a spray dryer for preparing wormwood extract according to the present invention;

[0040] Figure 7 A schematic diagram of a rotating seat and a through-port structure of a spray dryer for preparing wormwood extract according to the present invention;

[0041] Figure 8 This is a schematic diagram of the structure of a ring fixing plate and a mounting seat of a spray dryer for preparing wormwood extract according to the present invention;

[0042] Fig. 9 A schematic diagram of a reinforcement block structure of a spray dryer for preparing wormwood extract according to the present invention;

[0043] Fig.10 The present invention is a schematic diagram of the coil spring and mounting shaft structure of a spray dryer for preparing mugwort extract.

[0044] Description of the numbers in the figure:

[0045] 1. Shell; 2. Top cover; 3. Rotating mechanism; 301. Motor; 302. Ring gear; 303. Transmission gear; 304. Driving gear; 4. Feeding pipe; 5. Exhaust pipe; 6. Recovery pipe; 7. Cyclone separator; 8. Bag filter; 9. Induced draft fan; 10. Liquid tank; 11. Pump body; 12. Collection tank; 13. Second hot gas branch pipe; 14. Heater; 15. Air filter; 16. Blower; 17. First hot gas branch pipe; 18. Discharge pipe; 19. Inner tank; 20 , blocking plate; 21, spoiler; 22, first mounting ring; 23, second mounting ring; 24, third mounting ring; 25, rotating seat; 26, rotating drum; 27, ring fixing plate; 28, connecting air pipe; 29, connecting liquid pipe; 30, reinforcement block; 31, first hose; 32, second hose; 33, hot air spray hood; 34, liquid collecting cylinder; 35, atomizing nozzle; 36, top groove; 37, through port; 38, mounting seat; 39, coil spring; 40, mounting shaft; 41, mounting groove; 42, center groove. DETAILED DESCRIPTION

[0046] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0047] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] The first implementation method:

[0050] See also Figure 1-Figure 10The present invention provides a spray dryer for preparing wormwood extract, comprising a shell 1, a top cover 2 is fixedly installed on the top of the shell 1, an inner liner 19 is rotatably arranged inside the shell 1, a center groove 42 is opened at the middle position of the top of the inner liner 19, a rotating seat 25 is rotatably arranged on the inner wall of the center groove 42 through a sealing bearing, a top groove 36 is opened at the middle position of the bottom of the top cover 2, and a rotating drum 26 is rotatably arranged on the inner wall of the top groove 36 through a bearing, the rotating drum 26 is fixed on the top of the rotating seat 25, the rotating drum 26 and the inner liner 19 are provided with the same rotating mechanism 3, mounting seats 38 are fixed on both sides of the top of the rotating seat 25, and a mounting groove 41 is opened on one side of the mounting seat 38, and the inner wall of the mounting groove 41 is rotatably provided with a mounting seat A mounting shaft 40 is provided, one end of which is fixedly provided with a hot air spray hood 33 in an inclined shape, and a through hole 37 for the hot air spray hood 33 to pass through is provided in the middle position of the rotating seat 25, a coil spring 39 is fixedly provided between the outer wall of the mounting shaft 40 and the inner wall of the mounting groove 41, a liquid collecting cylinder 34 is fixedly provided at the middle position of the inner wall of the hot air spray hood 33, and an atomizing nozzle 35 is fixedly provided at the bottom of the liquid collecting cylinder 34, a liquid feeding assembly is provided at the top of the liquid collecting cylinder 34, a hot air inlet assembly is provided at one side of the shell 1, and the hot air inlet assembly is composed of a blower 16, an air filter 15 and a heater 14 connected by a pipeline, and a first hot air branch pipe 17 penetrating the top cover 2 and a bottom end of the shell 1 are provided. The second hot gas branch pipe 13 of the housing 1 is provided, one end of the first hot gas branch pipe 17 is inserted into the interior of the rotating drum 26, and one end of the first hot gas branch pipe 17 is rotatably provided with a connecting air pipe 28 through a sealed bearing, and the bottom end of the connecting air pipe 28 and the top of the hot gas spray hood 33 are fixedly installed with a first hose 31, the liquid conveying assembly includes a liquid tank 10 provided on one side of the housing 1, and a pump body 11 is installed on the top of the liquid tank 10, a liquid suction pipe plugged into the liquid tank 10 is installed at the liquid inlet end of the pump body 11, and a feeding pipe 4 penetrating the top cover 2 is installed at the liquid discharge end of the pump body 11, one end of the feeding pipe 4 is inserted into the interior of the first hot gas branch pipe 17, and one end of the feeding pipe 4 is rotatably provided with a connecting liquid pipe 29 through a sealed bearing, and the bottom end of the connecting liquid pipe 29 and the top of the hot gas spray hood 33 are fixedly installed with a first hose 31, and the liquid conveying assembly includes a liquid tank 10 provided on one side of the housing 1, and a pump body 11 is installed on the top of the liquid tank 10, and a liquid suction pipe plugged into the liquid tank 10 is installed at the liquid inlet end of the pump body 11, and a feeding pipe 4 penetrating the top cover 2 is installed at the liquid discharge end of the pump body 11, and one end of the feeding pipe 4 is inserted into the interior of the first hot gas branch pipe 17, and a connecting liquid pipe 29 is rotatably provided at one end of the feeding pipe 4 through a sealed bearing, and the bottom end of the connecting liquid pipe 29 and the top of the hot gas spray hood 33 are fixedly installed with a first hose 31, and the liquid conveying assembly includes a liquid tank 10 provided on the one A second hose 32 is fixedly installed on the top of the liquid collecting cylinder 34, the connecting liquid pipe 29 is located inside the connecting air pipe 28, and the second hose 32 is located inside the first hose 31. The above-mentioned hot air inlet component and liquid conveying component are used, and the wormwood extract is atomized and sprayed through the atomizing nozzle 35 through the liquid conveying component, and the hot air is also sprayed along the hot air spray hood 33, so that the inside of the liquid collecting cylinder 34 is gradually filled with wormwood extract, and the weight of the liquid collecting cylinder 34 is increased, so that the liquid collecting cylinder 34, the atomizing nozzle 35 and the hot air spray hood 33 are converted from an inclined shape to a vertical shape, so that the atomized wormwood extract and the hot air are sprayed simultaneously in the vertical direction, and the hot air is wrapped around the wormwood extract, so as to achieve sufficient drying of the wormwood extract.The wormwood extract in the feeding pipe 4, the connecting liquid pipe 29, the second hose 32 and the liquid collecting barrel 34 is also pre-heated through the first hot air branch pipe 17, the connecting air pipe 28, the first hose 31 and the hot air spray hood 33 to improve the fluidity of the wormwood extract, shorten the drying time of the entire spray dryer, and reduce energy consumption. The inner wall of the rotating drum 26 and the outer wall of the connecting air pipe 28 are fixedly installed with a ring fixing plate 27, and the inner wall of the connecting air pipe 28 and the inner wall of the connecting liquid pipe 29 are fixedly installed with equidistantly distributed reinforcement blocks 30. The rotating mechanism 3 includes a motor 301 fixedly installed on the top of the top cover 2, and the output shaft of the motor 301 is fixedly installed with a rotating shaft, and the outer wall of the rotating shaft is fixedly installed with a driving gear 304, the top of the inner tank 19 is fixedly installed with a gear ring 302, and the outer wall of the rotating drum 26 is fixedly installed with a transmission gear 303, and the driving gear 304 is meshed with the gear ring 302 and the transmission gear 303. The above-mentioned rotating mechanism 3 can drive the inner tank 19, the rotating seat 25, the rotating drum 26, the connecting air pipe 28, the connecting liquid pipe 29 and the vertical hot air spray hood 33 rotate with the liquid collecting barrel 34 at the same time, and the rotation direction of the inner tank 19 is opposite to the rotation direction of the hot air spray hood 33 and the liquid collecting barrel 34, so that the spray range of the hot air and the atomized wormwood extract is increased under the action of centrifugal force, so that the hot air can better contact with the wormwood extract, further accelerating the drying speed, when the liquid conveying component has conveyed the wormwood extract, the weight of the liquid collecting barrel 34 is reduced, reducing the force on the coil spring 39, so that the hot air spray hood 33 and the liquid collecting barrel 34 are gradually reset under the reset action of the coil spring 39, and the inner tank 19 and the inclined hot air spray hood 33 are rotated in coordination with the rotating mechanism 3, so that the hot air is sprayed on the inner wall of the inner tank 19 in an inclined state, effectively solving the problem of wormwood extract sticking to the wall, forming a more complete air sweeping structure, and there will be no phenomenon of wormwood extract adhering to the air sweeping structure. ,

[0051] In the present invention, a discharge pipe 18 is fixed at the bottom of the housing 1, and a discharge valve is provided at the bottom of the discharge pipe 18. A second mounting ring 23 is fixed to the inner wall of the housing 1 near the top, and a third mounting ring 24 and a first mounting ring 22 are fixed to the top and bottom of the outer wall of the liner 19, respectively. The first mounting ring 22 and the discharge pipe 18, and the second mounting ring 23 and the third mounting ring 24 are rotatably connected through a sealed bearing, such as Figure 3 , Figure 5 and Figure 6 As shown, the inner liner 19 can be easily rotated in the shell 1 and the leakage-proof property of the gap between the inner liner 19 and the shell 1 is ensured.

[0052] In the present invention, a recovery component is provided on the other side of the shell 1, and the recovery component is composed of a cyclone separator 7, a bag filter 8 and an induced draft fan 9 connected by a pipeline. A recovery pipe 6 passing through a discharge pipe 18 and inserted into an inner tank 19 is installed at the air inlet end of the cyclone separator 7. An exhaust pipe 5 is fixed on the recovery pipe 6. The exhaust pipe 5 is connected to the gap between the shell 1 and the inner tank 19. A collection tank 12 is provided at the bottom of the discharge pipe 18, the bottom of the cyclone separator 7 and the bottom of the bag filter 8. Figure 1 As shown, the recovery component is set up to separate the mugwort extract powder contained in the exhaust gas, so that the drying is complete.

[0053] In the present invention, the top of the inner wall of the inner liner 19 is designed to be spherical, and the bottom of the inner wall of the inner liner 19 is designed to be funnel-shaped, such as Figure 3 and Figure 6 As shown, the top spherical inner liner 19 can enclose the hot air and the atomized mugwort extract to ensure contact efficiency, and the bottom funnel-shaped inner liner 19 can quickly discharge the dry powder.

[0054] Second implementation method:

[0055] See also Figure 3 and Figure 6 Based on Implementation Example 1, this implementation example adds the following structure, so that the present application has the effect of slowing down the discharge speed of hot air at the gap between the shell 1 and the inner liner 19. The specific configuration is as follows: the outer wall of the inner liner 19 is fixedly mounted with baffle plates 20 distributed at equal distances, and the width of the baffle plates 20 is smaller than the width of the gap between the inner liner 19 and the shell 1. The baffle plates 20 are set to slow down the discharge speed of hot air, achieve the effect of heat preservation, and allow the hot air to stay in the gap between the shell 1 and the inner liner 19 for a longer time.

[0056] The third implementation method:

[0057] See also Figure 3 and Figure 6 Based on Implementation 1, this implementation adds the following structure, so that the present application has the function of changing the flow direction of the airflow. The specific configuration is as follows: the inner wall of the inner tank 19 is fixedly installed with spoilers 21 distributed at equal distances. The spoilers 21 can change the flow direction of the hot air and the diffusion range of the hot air, so that the hot air can fully contact the atomized mugwort extract, thereby improving the drying speed.

[0058] In summary, the working principle of the present invention is as follows: when working, the outside air is sent into the air filter 15 through the blower 16 in the hot air inlet assembly, the filtered air is sent into the heater 14 along the pipeline, and the heated air is discharged along the first hot air branch pipe 17 and the second hot air branch pipe 13 respectively;

[0059] Then, the wormwood extract in the liquid tank 10 is extracted through the pump body 11 in the liquid conveying assembly and discharged into the interior of the liquid collecting barrel 34 along the feeding pipe 4, and then atomized and sprayed out through the atomizing nozzle 35, and hot air is also sprayed out along the first hot air branch pipe 17, the connecting air pipe 28, the first hose 31 and the hot air spray hood 33. At this time, the interior of the liquid collecting barrel 34 is gradually filled with wormwood extract, thereby increasing the weight of the liquid collecting barrel 34, so that the liquid collecting barrel 34, the atomizing nozzle 35 and the hot air spray hood 33 are converted from an inclined state to a vertical state. At this time, the coil spring 39 is unfolded, so that the atomized wormwood extract and the hot air are sprayed out simultaneously in the vertical direction, so that the hot air is wrapped around the wormwood extract, and the wormwood extract in the feeding pipe 4, the connecting liquid pipe 29, the second hose 32 and the liquid collecting barrel 34 is pre-heated by the first hot air branch pipe 17, the connecting air pipe 28, the first hose 31 and the hot air spray hood 33 to improve the fluidity of the wormwood extract;

[0060] At the same time, the motor 301 in the rotating mechanism 3 drives the driving gear 304 to rotate, and the meshing action drives the gear ring 302 and the transmission gear 303 to rotate in the opposite direction, driving the inner liner 19, the rotating seat 25, the rotating drum 26, the connecting air pipe 28, the connecting liquid pipe 29 and the vertical hot air spray hood 33 and the liquid collecting cylinder 34 to rotate simultaneously, and the rotation direction of the inner liner 19 is opposite to the rotation direction of the hot air spray hood 33 and the liquid collecting cylinder 34, thereby increasing the spray range of the hot air and the atomized wormwood extract under the action of centrifugal force, so that the hot air can better contact the wormwood extract, and can drive the spoiler 21 to rotate simultaneously when the inner liner 19 rotates, thereby changing the flow direction and diffusion range of the hot air inside the inner liner 19;

[0061] Moreover, a part of the hot air will be discharged into the gap between the shell 1 and the inner liner 19 along the second hot air branch pipe 13, which can heat the gap between the shell 1 and the inner liner 19, accelerate the heating speed inside the inner liner 19, and slow down the discharge speed of this part of the hot air under the action of the blocking plate 20, so that it can stay in the gap between the shell 1 and the inner liner 19 for a longer time;

[0062] When the wormwood extract is transported through the liquid delivery assembly, the weight of the liquid collecting cylinder 34 is reduced, thereby reducing the force on the coil spring 39, so that the hot air spray hood 33 and the liquid collecting cylinder 34 are gradually reset under the reset action of the coil spring 39, and the rotating mechanism 3 drives the inner liner 19 and the inclined hot air spray hood 33 to rotate, so that the hot air is sprayed on the inner wall of the inner liner 19 in an inclined state, solving the problem of the wormwood extract sticking to the wall, and forming a more perfect air sweeping structure;

[0063] Finally, the wormwood extract powder contained in the exhaust gas is separated by the cyclone separator 7 and the bag filter 8 in the recovery component and collected by the collection tank 12.

[0064] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A spray dryer for preparing wormwood extract, comprising a housing (1), characterized in that: A top cover (2) is fixedly mounted on the top of the shell (1); an inner liner (19) is rotatably mounted inside the shell (1); a center groove (42) is provided at a middle position on the top of the inner liner (19); a rotating seat (25) is rotatably mounted on the inner wall of the center groove (42); a top groove (36) is provided at a middle position on the bottom of the top cover (2); a rotating drum (26) is rotatably mounted on the inner wall of the top groove (36); the rotating drum (26) is fixed on the top of the rotating seat (25); the rotating drum (26) and the inner liner (19) are provided with the same rotating mechanism (3); and two rotating mechanisms (3) are fixed on both sides of the top of the rotating seat (25). A mounting seat (38) is provided with a mounting groove (41) on one side of the mounting seat (38), a mounting shaft (40) is rotatably provided on the inner wall of the mounting groove (41), a same inclined hot air spray hood (33) is fixedly provided on one end of the mounting shaft (40), a through hole (37) for the hot air spray hood (33) to pass through is provided in the middle of the rotating seat (25), a coil spring (39) is fixedly provided on the outer wall of the mounting shaft (40) and the inner wall of the mounting groove (41), a liquid collecting cylinder (34) is fixedly provided on the middle of the inner wall of the hot air spray hood (33), and an atomizing nozzle (35) is fixedly provided on the bottom of the liquid collecting cylinder (34); A liquid conveying assembly is provided at the top of the liquid collecting cylinder (34), and the liquid conveying assembly is used to introduce the mugwort extract into the liquid collecting cylinder (34) and spray it along the atomizing nozzle (35). When the liquid collecting cylinder (34) is filled with the mugwort extract, the weight of the liquid collecting cylinder (34) is greater than the rebound force of the coil spring (39), so that the hot air spray hood (33), the liquid collecting cylinder (34) and the atomizing nozzle (35) are converted from an inclined state to a vertical state, and the atomized mugwort extract and hot air are sprayed in a vertical direction. When the mugwort extract is about to be delivered, the weight of the liquid collecting cylinder (34) is reduced, and the rebound force of the coil spring (39) gradually drives the hot air spray hood (33), the liquid collecting cylinder (34) and the atomizing nozzle (35) to reset, so that the hot air is sprayed on the inner wall of the inner tank (19) in an inclined state.

2. A spray dryer for preparing wormwood extract according to claim 1, characterized in that: A discharge pipe (18) is fixed at the bottom of the shell (1), and a discharge valve is arranged at the bottom of the discharge pipe (18); a second mounting ring (23) is fixed to the inner wall of the shell (1) near the top, and a third mounting ring (24) and a first mounting ring (22) are respectively fixed to the top and bottom of the outer wall of the inner tank (19); the first mounting ring (22) and the discharge pipe (18) as well as the second mounting ring (23) and the third mounting ring (24) are rotatably connected via a sealed bearing.

3. A spray dryer for preparing wormwood extract according to claim 2, characterized in that: A hot air inlet assembly is provided on one side of the shell (1), and the hot air inlet assembly is composed of a blower (16), an air filter (15) and a heater (14) connected by a pipeline, and an exhaust end of the heater (14) is provided with a first hot air branch pipe (17) penetrating the top cover (2) and a second hot air branch pipe (13) inserted into the bottom of the shell (1), one end of the first hot air branch pipe (17) is inserted into the interior of the rotating drum (26), and a connecting air pipe (28) is rotatably provided at one end of the first hot air branch pipe (17), and a first hose (31) is fixedly installed between the bottom end of the connecting air pipe (28) and the top of the hot air spray hood (33).

4. A spray dryer for preparing wormwood extract according to claim 3, characterized in that: A recovery component is provided on the other side of the shell (1), and the recovery component is composed of a cyclone separator (7), a bag filter (8) and an induced draft fan (9) connected by a pipeline. A recovery pipe (6) is installed at the air inlet end of the cyclone separator (7), which passes through the discharge pipe (18) and is inserted into the inner tank (19). An exhaust pipe (5) is fixed on the recovery pipe (6), and the exhaust pipe (5) is connected to the gap between the shell (1) and the inner tank (19). A collection tank (12) is provided at the bottom of the discharge pipe (18), the bottom of the cyclone separator (7) and the bottom of the bag filter (8).

5. A spray dryer for preparing wormwood extract according to claim 4, characterized in that: The liquid conveying assembly comprises a liquid tank (10) arranged on one side of the shell (1), and a pump body (11) is installed on the top of the liquid tank (10), a liquid suction pipe inserted into the liquid tank (10) is installed at the liquid inlet end of the pump body (11), and a feed pipe (4) penetrating the top cover (2) is installed at the liquid discharge end of the pump body (11), one end of the feed pipe (4) is inserted into the interior of the first hot gas branch pipe (17), and a connecting liquid pipe (29) is rotatably provided at one end of the feed pipe (4), a second hose (32) is fixedly installed between the bottom end of the connecting liquid pipe (29) and the top of the liquid collecting cylinder (34), the connecting liquid pipe (29) is located inside the connecting gas pipe (28), and the second hose (32) is located inside the first hose (31).

6. A spray dryer for preparing wormwood extract according to claim 5, characterized in that: A ring fixing plate (27) is fixedly mounted on the inner wall of the rotating drum (26) and the outer wall of the connecting air pipe (28), and reinforcement blocks (30) distributed at equal distances are fixedly mounted on the inner wall of the connecting air pipe (28) and the inner wall of the connecting liquid pipe (29).

7. A spray dryer for preparing wormwood extract according to claim 6, characterized in that: The rotating mechanism (3) comprises a motor (301) fixedly mounted on the top of the top cover (2), wherein the output shaft of the motor (301) is fixedly mounted with a rotating shaft, the outer wall of the rotating shaft is fixedly mounted with a driving gear (304), the top of the inner container (19) is fixedly mounted with a gear ring (302), the outer wall of the rotating drum (26) is fixedly mounted with a transmission gear (303), and the driving gear (304) is meshed with the gear ring (302) and the transmission gear (303).

8. The spray dryer for preparing wormwood extract according to claim 1, characterized in that: The outer wall of the inner container (19) is fixedly mounted with blocking plates (20) distributed at equal distances, and the width of the blocking plates (20) is smaller than the width of the gap between the inner container (19) and the shell (1).

9. A spray dryer for preparing wormwood extract according to claim 1, characterized in that: The inner wall of the inner container (19) is fixedly mounted with spoilers (21) distributed at equal distances.

10. A spray dryer for preparing wormwood extract according to claim 1, characterized in that: The top of the inner wall of the inner container (19) is designed to be spherical, and the bottom of the inner wall of the inner container (19) is designed to be funnel-shaped.

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