Electrothermal blowing drying box for drying raw material medicine
By designing vertically arranged blowers and spaced blast tubes in the electric blast drying oven, the problem of high-temperature gas having difficulty flowing through the interior of the API pile is solved, achieving rapid and uniform heating and efficient drying of the API.
Patent Information
- Application Number
- CN202423084240.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In existing electric blast drying ovens, high-temperature gas has difficulty flowing through the interior of the API pile, resulting in uneven heating and affecting drying efficiency.
An electric blast drying oven is designed, in which the blast cylinder is vertically arranged in the drying chamber, the blast pipes are arranged at intervals along the circumferential direction and vertically, and the blast holes are spaced along the length of the blast pipe. The air heated by the blower is evenly discharged from the inside of the raw material pile through the blast holes, and the telescopic drive mechanism facilitates the extension and contraction of the blast pipe to avoid blocking the raw material.
It achieves rapid and uniform heating of the API, improves the drying effect and efficiency, and facilitates the placement and removal of the API.
Smart Images
Figure CN223484694U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drying equipment technology, specifically to an electric heating forced-air drying oven for drying raw pharmaceutical materials. Background Technology
[0002] In the pharmaceutical production process, the raw materials (medicinal herbs, which can also be used as pharmaceuticals) used to prepare the drugs need to be dried for later use. To ensure rapid drying of the raw materials, an electric heating forced-air drying oven is usually used. The blower accelerates the heat flow inside the oven, thereby quickly removing moisture from the surface of the raw materials. However, during the drying process, the raw materials are piled up inside the oven, making it difficult for the high-temperature gas to flow over the surface of the herbs within the pile. This results in poor heat uniformity of the raw materials, affecting the drying effect and leading to low drying efficiency. Utility Model Content
[0003] To address the technical problem of existing electric heating forced-air drying ovens used for drying raw pharmaceutical materials, where high-temperature gas has difficulty flowing over the surface of the medicinal materials inside the raw material pile; this utility model provides an electric heating forced-air drying oven for drying raw pharmaceutical materials, which can exhaust high-temperature gas from the raw material pile, thereby quickly and evenly drying the raw material pile and ensuring the drying effect and efficiency of the raw materials.
[0004] This utility model is achieved through the following technical solution:
[0005] This utility model provides an electric heating drying oven for drying raw pharmaceutical materials, comprising: a drying chamber having an openable drying cavity for containing the raw pharmaceutical materials; a blower duct vertically disposed within the drying cavity; a blower connected to the outlet of the blower within the inner cavity of the blower duct; an electric heating element disposed within the blower duct; and multiple blower pipes spaced circumferentially and vertically along the blower duct, each blower pipe having multiple air holes on its sidewall, spaced along the length of the corresponding blower pipe, each blower pipe communicating with the inner cavity of the blower duct, and each blower pipe being extendable / retractable relative to the blower duct.
[0006] The present invention provides an electric heating drying oven for drying raw pharmaceutical materials, comprising a drying chamber, a blower, a blower, an electric heating element, and a blower pipe. The drying chamber has an openable drying cavity to accommodate the raw pharmaceutical materials. The blower is vertically positioned in the middle of the drying cavity, allowing air to be blown from the middle of the raw pharmaceutical material pile. The outlet of the blower is connected to the inner cavity of the blower. The electric heating element is located inside the blower. The blower pipe is spaced apart circumferentially and vertically along the blower. Each blower pipe has multiple blower holes on its side wall, spaced apart along the length of the corresponding blower pipe, and the blower pipe is connected to the inner cavity of the blower. Air is heated by the electric heating element and discharged from the blower holes of the blower pipe by the blower.
[0007] In use, the raw materials are placed into the drying chamber. Since the blower is located inside the drying chamber, it is positioned in the center of the raw material pile. Blower pipes are spaced apart circumferentially and vertically along the blower pipe. Multiple blower holes are provided on the side walls of each blower pipe, spaced apart along the length of the corresponding blower pipe. The blower pipes are connected to the inner cavity of the blower pipe, allowing air heated by the heating element to be evenly discharged from the inside of the raw material pile. This provides rapid and uniform heating of the raw material pile, ensuring the drying effect and efficiency of the raw materials. The blower pipes are retractable relative to the blower pipe, allowing them to be retracted when placing or removing the raw materials, preventing them from obstructing the raw materials and affecting the efficiency of feeding and discharging.
[0008] In an optional embodiment, a telescopic drive mechanism is further included, which is disposed inside the blower duct; the blower pipe is connected to the telescopic drive mechanism in a transmission manner, and the telescopic drive mechanism is capable of driving the blower pipe to extend or retract relative to the blower duct, so as to facilitate the extension or retraction of the blower pipe relative to the blower duct.
[0009] In an optional embodiment, the telescopic drive mechanism includes: a rotating shaft rotatably connected to the blower, the rotating shaft extending axially along the blower and one end extending outside the blower; a drive disk fixedly connected to the rotating shaft, multiple drive disks spaced apart axially along the rotating shaft and coaxially arranged with the rotating shaft; wherein one end of the blower pipe is hinged to the drive disk, multiple blower pipes hinged on the same drive disk are evenly distributed circumferentially along the corresponding drive disk, and under the rotation of the drive disk, the blower pipe extends and retracts relative to the blower, so as to ensure that the blower pipe can extend and retract relative to the blower while having sufficient extension.
[0010] In an optional embodiment, the side wall of the blower is provided with a plurality of mounting holes, and a flexible mounting sleeve is adapted to fit into the mounting holes. The middle part of the blower pipe is inserted into the mounting sleeve, so that when the telescopic drive mechanism drives the blower pipe to extend or retract, the blower pipe can be deflected, thus preventing the blower pipe from getting stuck in the mounting holes.
[0011] In an optional embodiment, the mounting sleeve is provided with a polytetrafluoroethylene (PTFE) liner, and the middle part of the blower pipe is inserted into the PTFE liner. This utilizes the self-lubricating properties of PTFE to reduce the friction during the extension and retraction of the blower pipe, facilitating the extension and retraction of the blower pipe while reducing wear on the mounting sleeve and improving its service life.
[0012] In an optional embodiment, a drive handwheel is connected to one end of the rotating shaft located outside the blower to facilitate manual rotation of the rotating shaft.
[0013] In an optional embodiment, the upper end of the drying chamber is provided with an opening and closing feeding door so that the raw materials to be dried can be fed into the drying chamber from the top, which facilitates the rapid addition of the raw materials to be dried into the drying chamber.
[0014] In an optional embodiment, the lower end of the drying chamber is provided with an openable discharge door to facilitate the quick removal of the dried raw material from the drying chamber.
[0015] In an optional embodiment, the blower is made of metal so that it can conduct heat, thereby transferring the heat generated by the high-temperature gas to the raw material that is in contact with the blower, thereby improving the heating and drying efficiency of the raw material.
[0016] In an optional embodiment, the blower is made of stainless steel to ensure that the blower can heat the raw material while preventing contamination of the raw material.
[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0018] 1. The electric heating drying oven for drying raw pharmaceutical materials provided by this utility model includes a drying chamber, a blower, a blower, an electric heating element, and a blower pipe. The drying chamber is provided with an openable drying cavity to accommodate the raw pharmaceutical materials. The blower is vertically arranged in the middle of the drying cavity. The air outlet of the blower is connected to the inner cavity of the blower. The electric heating element is arranged inside the blower. The blower pipe is arranged at intervals along the circumference and vertical of the blower. Multiple blower holes are provided on the side wall of each blower pipe. The multiple blower holes are arranged at intervals along the length of the corresponding blower pipe, and the blower pipe is connected to the inner cavity of the blower. The air is heated by the electric heating element through the blower and then evenly discharged from the inside of the raw pharmaceutical material pile through the blower holes, thereby rapidly and evenly heating the raw pharmaceutical material pile and ensuring the drying effect and drying efficiency of the raw pharmaceutical materials.
[0019] 2. The electric heating blast drying oven for drying raw pharmaceutical materials provided by this utility model has a blast pipe that can extend and retract relative to the blast cylinder, so that the blast pipe can be retracted when placing and taking out the raw pharmaceutical materials, so as to avoid the blast pipe blocking the raw pharmaceutical materials and affecting the efficiency of feeding and discharging the raw pharmaceutical materials. Attached Figure Description
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0021] In the attached diagram:
[0022] Figure 1 This is a schematic diagram of the structure of an electric heating forced-air drying oven used for drying raw pharmaceutical materials according to an embodiment of this utility model;
[0023] Figure 2 This is a schematic diagram of the structure of the blower duct according to an embodiment of the present utility model;
[0024] Figure 3 for Figure 2 A schematic diagram of the AA-plane cross-sectional structure.
[0025] The attached diagram shows the markings and corresponding component names:
[0026] 10-Drying chamber, 11-Drying cavity, 12-Feeding compartment door, 13-Discharge compartment door;
[0027] 20 - Blower; 21 - Mounting sleeve;
[0028] 30 - Blower;
[0029] 40 - Heating element;
[0030] 50 - Blower pipe, 51 - Blower hole;
[0031] 60-Telescopic drive mechanism, 61-Rotating shaft, 62-Drive disc, 63-Drive handwheel. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0033] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.
[0034] Meanwhile, the terms "set up," "open," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0035] Example
[0036] Combination Figure 1 and Figure 2This embodiment provides an electrically heated drying oven for drying raw pharmaceutical materials, comprising: a drying chamber 10, wherein the drying chamber 10 is provided with an openable drying cavity 11 for containing the raw pharmaceutical materials; a blower 20, wherein the blower 20 is vertically disposed within the drying cavity 11; a blower 30, wherein the outlet end of the blower 30 is connected to the inner cavity of the blower 20; an electric heating element 40, wherein the electric heating element 40 is disposed within the blower 20; and multiple blower pipes 50, wherein the multiple blower pipes 50 are arranged at intervals along the circumference and vertical direction of the blower 20, and each blower pipe 50 has multiple blower holes 51 on its sidewall, the multiple blower holes 51 being arranged at intervals along the length direction of the corresponding blower pipe 50, each blower pipe 50 communicating with the inner cavity of the blower 20, and the blower pipe 50 being extendable relative to the blower 20.
[0037] Understandably, the drying chamber is equipped with a door to ensure that the drying chamber 11 can be opened. In this embodiment, the upper end of the drying chamber 10 is provided with an opening and closing feeding door 12, so that raw materials can be fed into the drying chamber 10 from the top, facilitating the rapid addition of the raw material to be dried into the drying chamber 10. At the same time, a ventilated mesh is provided on the feeding door 12 to facilitate the exhaust of gas from the drying chamber 11.
[0038] Meanwhile, the lower end of the drying chamber 10 is provided with a discharge door 13 that can be opened and closed, so as to quickly remove the dried raw materials from the drying chamber 10.
[0039] The blower duct 20 mainly serves to install the heating element 40 and connect the various blower pipes 50. In this embodiment, the blower duct 20 is made of metal so that it can conduct heat, thereby transferring the heat generated by the high-temperature gas to the raw material that is in contact with the blower duct 20, so as to improve the heating and drying efficiency of the raw material.
[0040] Generally speaking, the blower duct 20 is made of stainless steel, such as 304 stainless steel, to ensure that the blower duct 20 can heat the raw material while avoiding contamination of the raw material.
[0041] It should be understood that this embodiment also includes a telescopic drive mechanism 60, which is disposed inside the blower duct 20; the blower pipe 50 is connected to the telescopic drive mechanism 60 in a transmission manner, and the telescopic drive mechanism 60 can drive the blower pipe 50 to extend or retract relative to the blower duct 20, so as to facilitate the extension or retraction of the blower pipe 50 relative to the blower duct 20.
[0042] Combination Figure 3Specifically, the telescopic drive mechanism 60 includes: a rotating shaft 61 rotatably connected to the blower duct 20, the rotating shaft 61 extending along the axial direction of the blower duct 20, and one end of the rotating shaft 61 extending outside the blower duct 20; a drive disk 62 fixedly connected to the rotating shaft 61, multiple drive disks 62 spaced apart along the axial direction of the rotating shaft 61, and the drive disks 62 and the rotating shaft 61 being coaxially arranged; wherein, one end of the blower pipe 50 is hinged to the drive disk 62, and multiple blower pipes 50 hinged on the same drive disk 62 are evenly distributed circumferentially along the corresponding drive disk 62, and when the drive disk 62 rotates, the blower pipe 50 extends and retracts relative to the blower duct 20, so as to ensure that the blower pipe 50 can extend and retract relative to the blower duct 20 while having sufficient extension.
[0043] It should be noted that when the blower pipe 50 is retracted, it should be ensured that the portion of the blower pipe 50 is inserted into the blower duct 20 to prevent the blower pipe 50 from being completely retracted into the blower duct 20, thus preventing the telescopic drive mechanism 60 from extending the blower pipe 50. In this embodiment, the length of the blower pipe 50 is greater than the radius of the blower duct 20. To ensure that most of the high-temperature gas can be discharged from the blower pipe 50, the connection between the blower pipe 50 and the blower duct 20 needs to be sealed. Specifically:
[0044] The side wall of the blower duct 20 is provided with multiple mounting holes, and a flexible mounting sleeve 21 is adapted to fit into the mounting hole. The middle part of the blower pipe 50 is inserted into the mounting sleeve 21 so that when the telescopic drive mechanism 60 drives the blower pipe 50 to extend or retract, the blower pipe 50 can be deflected to avoid the blower pipe 50 getting stuck in the mounting hole.
[0045] The mounting sleeve 21 is usually made of rubber. In this embodiment, the mounting sleeve 21 is provided with a polytetrafluoroethylene (PTFE) liner. The middle part of the blower pipe 50 is inserted into the PTFE liner. By utilizing the self-lubricating properties of PTFE, the friction force when the blower pipe 50 extends and retracts is reduced. This facilitates the extension and retraction of the blower pipe 50 while reducing the wear of the mounting sleeve 21 and improving its service life.
[0046] Meanwhile, a drive handwheel 63 is connected to one end of the rotating shaft 61 located outside the blower 20, so as to manually drive the rotating shaft 61 to rotate.
[0047] In summary, the electric heating drying oven for drying raw pharmaceutical materials provided in this embodiment includes a drying chamber 10, a blower 20, a blower 30, an electric heating element 40, a blower pipe 50, and a telescopic drive mechanism 60. The drying chamber 10 is provided with an openable drying cavity 11 to accommodate the raw pharmaceutical materials. The blower 20 is vertically arranged in the middle of the drying cavity 11, which can blow air from the middle of the raw pharmaceutical material pile. The air outlet of the blower 30 is connected to the inner cavity of the blower 20. The electric heating element 40 is arranged inside the blower 20. The blower pipe 50 is arranged at intervals along the circumference and vertical of the blower 20. Each blower pipe 50 has multiple blower holes 51 on its side wall. The multiple blower holes 51 are arranged at intervals along the length of the corresponding blower pipe 50, and the blower pipe 50 is connected to the inner cavity of the blower 20 so that the air is heated by the electric heating element 40 by the blower 30 and discharged from the blower holes 51 of the blower pipe 50.
[0048] In use, the retractable drive mechanism 60 drives the blower pipe 50 to retract, closes the discharge chamber door 13, opens the feeding chamber door 12, and places the raw material into the drying chamber 11. Then, the discharge chamber door 13 is closed, sealing the drying chamber 11. Next, the pneumatic blower 30 and the electric heating element 40 are sequentially activated. Since the blower duct 20 is located inside the drying chamber 11, it is positioned in the middle of the raw material pile. The blower pipes 50 are spaced apart circumferentially and vertically along the blower duct 20. Each blower pipe 50 has multiple blower holes 51 on its side wall, spaced apart along the length of the corresponding blower pipe 50. The blower pipes 50 are connected to the inner cavity of the blower duct 20, allowing air heated by the electric heating element 40 to be evenly discharged from the inside of the raw material pile, thus rapidly and evenly heating the raw material pile and ensuring the drying effect and efficiency of the raw material.
[0049] After the raw material is dried, the blower 30 and the heating element 40 are turned off, and the discharge chamber door 13 and the feeding chamber door 12 are opened, allowing the raw material to be discharged from the drying chamber 10 by gravity. When placing and removing the raw material, the blower pipe 50 is retracted to prevent it from obstructing the raw material and affecting the efficiency of feeding and discharging.
[0050] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An electrically heated forced-air drying oven for drying raw pharmaceutical materials, characterized in that, include: A drying chamber (10) is provided with an openable drying cavity (11) for containing the raw material drug; A blower (20) is vertically arranged in the middle of the drying chamber (11); A blower (30) is provided, the outlet of which is connected to the inner cavity of the blower tube (20). Heating element (40) is disposed inside the blower (20); A blower pipe (50) is provided, and multiple blower pipes (50) are provided at intervals along the circumference and vertical direction of the blower cylinder (20). Multiple blower holes (51) are provided on the side wall of each blower pipe (50). Multiple blower holes (51) are provided at intervals along the length direction of the corresponding blower pipe (50). Each blower pipe (50) is connected to the inner cavity of the blower cylinder (20), and the blower pipe (50) can extend and retract relative to the blower cylinder (20).
2. The electrically heated forced-air drying oven for drying raw pharmaceutical materials according to claim 1, characterized in that, It also includes a telescopic drive mechanism (60), which is disposed inside the blower (20); The blower pipe (50) is connected to the telescopic drive mechanism (60), which can drive the blower pipe (50) to extend or retract relative to the blower cylinder (20).
3. The electrically heated forced-air drying oven for drying raw pharmaceutical materials according to claim 2, characterized in that, The telescopic drive mechanism (60) includes: A rotating shaft (61) is rotatably connected to the blower (20). The rotating shaft (61) extends along the axial direction of the blower (20), and one end of the rotating shaft (61) extends outside the blower (20). A drive disk (62) is fixedly connected to the rotating shaft (61). Multiple drive disks (62) are spaced apart along the axial direction of the rotating shaft (61), and the drive disks (62) and the rotating shaft (61) are coaxially arranged. One end of the blower pipe (50) is hinged to the drive disk (62). Multiple blower pipes (50) hinged to the same drive disk (62) are evenly distributed around the corresponding drive disk (62). When the drive disk (62) rotates, the blower pipe (50) extends and retracts relative to the blower cylinder (20).
4. The electrically heated forced-air drying oven for drying raw pharmaceutical materials according to claim 3, characterized in that, The side wall of the blower tube (20) is provided with a plurality of mounting holes, and a flexible mounting sleeve (21) is adapted to fit into the mounting hole, and the middle part of the blower tube (50) is inserted into the mounting sleeve (21).
5. The electrically heated forced-air drying oven for drying raw pharmaceutical materials according to claim 4, characterized in that, The mounting sleeve (21) is provided with a polytetrafluoroethylene liner, and the middle part of the blower pipe (50) is inserted into the polytetrafluoroethylene liner.
6. The electrically heated forced-air drying oven for drying pharmaceutical raw materials according to claim 3, characterized in that, The rotating shaft (61) is located at one end of the blower (20) and is connected to a drive handwheel (63).
7. The electrically heated forced-air drying oven for drying raw pharmaceutical materials according to claim 1, characterized in that, The upper end of the drying chamber (10) is provided with a feeding chamber door (12) that can be opened and closed.
8. The electrically heated forced-air drying oven for drying pharmaceutical raw materials according to claim 7, characterized in that, The lower end of the drying chamber (10) is provided with a discharge door (13) that can be opened and closed.
9. The electrically heated forced-air drying oven for drying pharmaceutical raw materials according to any one of claims 1 to 8, characterized in that, The blower tube (20) is made of metal.
10. The electrically heated forced-air drying oven for drying pharmaceutical raw materials according to claim 9, characterized in that, The blower tube (20) is made of stainless steel.