Drying equipment convenient for moisture control of traditional Chinese medicinal materials

Abstract

The utility model discloses a drying device convenient for moisture control of traditional Chinese medicinal materials, which comprises a belt dryer, a drying cavity is arranged in the dryer, a drying conveyor belt penetrating through the dryer is arranged in the drying cavity, a re-drying conveyor belt penetrating through the dryer is further arranged in the drying cavity, the re-drying conveyor belt is parallelly positioned below the drying conveyor belt, and the drying conveyor belt is arranged below the re-drying conveyor belt. The conveying directions of the re-drying conveying belt and the drying conveying belt are opposite; a moisture online detection mechanism is arranged above the discharging end of the drying conveying belt, a material guiding plate is hinged to the discharging end of the drying conveying belt, the material guiding plate is in lifting fit with the drying cavity through a lifting mechanism, and the lifting mechanism is in linkage fit with the moisture online detection mechanism; a first collecting groove is formed in the side, away from the hinged end, of the material guiding plate, when the material guiding plate is lifted, the discharging end of the drying conveying belt is in material guiding fit with the first collecting groove through the material guiding plate, the first collecting groove is located above the re-drying conveying belt, and the water content of dried medicinal materials can be conveniently controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of Chinese medicine processing, in particular to drying equipment which is convenient for controlling the moisture content of Chinese medicine. Background Art

[0002] When processing Chinese medicinal materials, the initial steps include drying, which is also an extremely important step. Depending on the subsequent processed products and their functions, the moisture content of the medicinal materials needs to be stabilized within a certain range. For example, during the preparation of Chinese medicine, the moisture content is generally controlled at 7%~13%.

[0003] Existing belt dryers can be used to dry Chinese medicinal materials. However, during the drying process, there is a lack of moisture detection equipment, and it is impossible to know whether the moisture content of the medicinal materials is up to standard. Drying parameters are usually planned based on experience, and the moisture content is tested after drying. If it exceeds the standard, rework is required, and the drying efficiency is low. Utility Model Content

[0004] The utility model provides a drying device which is convenient for controlling the moisture content of Chinese medicinal materials, aiming to solve the problem that the above-mentioned drying device has no detection device for the moisture content of the dried medicinal materials and has low drying efficiency due to repeated operation.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a drying device for controlling the moisture content of Chinese medicinal materials, comprising a belt dryer, a drying chamber is provided in the dryer, a drying conveyor belt passing through the dryer is provided in the drying chamber, a hot air blower is provided on the top of the dryer, the output end of the hot air blower is connected to the drying chamber through an air supply duct, a re-drying conveyor belt passing through the dryer is further provided in the drying chamber, the re-drying conveyor belt is located parallel to and below the drying conveyor belt, and the conveying direction of the re-drying conveyor belt is opposite to that of the drying conveyor belt;

[0006] An online moisture detection mechanism is provided above the discharge end of the drying conveyor belt, and a guide plate is hinged at the discharge end of the drying conveyor belt. The guide plate forms a lifting and lowering cooperation with the drying chamber through a lifting mechanism, and the lifting mechanism forms a linkage cooperation with the online moisture detection mechanism. A first collecting groove is provided on the side of the guide plate away from the hinged end. When the guide plate is lifted, the discharge end of the drying conveyor belt forms a guiding cooperation with the first collecting groove through the guide plate, and the first collecting groove is located above the re-drying conveyor belt.

[0007] Preferably, when the lifting mechanism is output, the guide plate is lifted around the hinged end, and the discharge end of the drying conveyor belt forms a guide cooperation with the first collecting trough through the guide plate;

[0008] When the lifting mechanism contracts, the guide plate descends around the hinged end, and the discharge end of the drying conveyor belt forms a guide cooperation with the feed end of the re-drying conveyor belt through the guide plate.

[0009] As a more preferred embodiment, one end of the guide plate is hingedly matched with the inner wall of the drying chamber at the bottom of the discharge end of the drying conveyor belt through a hinge rod, and the guide plate rotates in a vertical direction around the hinge.

[0010] Furthermore, two lifting mechanisms are provided at the bottom of the material guide plate, the two lifting mechanisms are symmetrically arranged about the middle position of the bottom of the material guide plate, and the projection of each lifting mechanism at the bottom of the material guide plate is parallel to the middle line of the material guide plate.

[0011] Furthermore, the lifting mechanism includes an electric telescopic rod, the fixed end of the electric telescopic rod is hingedly matched with the drying chamber through a hinge, and the output end of the electric telescopic rod is hingedly matched with the bottom of the guide plate away from the hinged end through a hinge.

[0012] Preferably, the length of the re-drying conveyor belt is greater than that of the drying conveyor belt, and both ends of the re-drying conveyor belt are exposed from the drying chamber.

[0013] Preferably, a second collecting trough is provided at the discharge end of the re-drying conveyor belt, and the discharge end of the re-drying conveyor belt and the second collecting trough form a feeding cooperation.

[0014] Preferably, an online moisture detection mechanism is provided above the discharge end of the re-drying conveyor belt.

[0015] Preferably, a control box is provided on one side of the belt dryer, and the lifting mechanism is linked with the online moisture detection mechanism through the control box.

[0016] More preferably, the online moisture detection mechanism includes a mounting rod, both ends of which are detachably fixed to the inner wall of the drying chamber, and the mounting rod is kept horizontal, and the bottom of the mounting rod is axially evenly arranged with detection ends of several online moisture content monitors.

[0017] Beneficial effects of the utility model:

[0018] The utility model performs online detection of the moisture content of the medicinal materials after primary drying through an online moisture detection mechanism, dynamically adjusts the state of the feed guide plate according to the detection result, thereby controlling the feeding direction of the feed guide plate, and collecting the materials through the first collecting trough when the standard is met, and entering the re-drying conveyor belt for re-drying when the standard is exceeded, so as to facilitate the control of moisture content and improve the efficiency of drying the medicinal materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front perspective schematic diagram of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the back side of the utility model;

[0021] Figure 3It is a three-dimensional schematic diagram of the discharge end when the guide plate of the utility model is lifted;

[0022] Figure 4 It is a three-dimensional schematic diagram of the discharge end when the guide plate of the utility model descends;

[0023] Figure 5 It is a three-dimensional schematic diagram of the feeding end of the utility model;

[0024] In the figure: 1, belt dryer; 101, drying conveyor belt; 102, hot air blower; 103, air supply duct; 104, drying chamber;

[0025] 2. Feed plate;

[0026] 3. Lifting mechanism; 301. Articulated member; 302. Electric telescopic rod;

[0027] 4. Moisture online detection mechanism; 401. Mounting rod; 402. Online moisture content monitor;

[0028] 5. Re-drying conveyor belt; 6. First collecting trough; 7. Second collecting trough; 8. Control box. DETAILED DESCRIPTION

[0029] As follows, embodiments are further described with reference to the accompanying drawings.

[0030] like Figure 1~Figure 5 As shown, as a preferred embodiment 1, a drying device for controlling the moisture content of Chinese medicinal materials comprises a belt dryer 1, wherein a drying chamber 104 is provided in the dryer 1, wherein a drying conveyor belt 101 penetrating the dryer 1 is provided in the drying chamber 104, wherein a hot air blower 102 is provided on the top of the dryer 1, wherein the output end of the hot air blower 102 is connected to the drying chamber 104 via an air supply duct 103, wherein a re-drying conveyor belt 5 penetrating the dryer 1 is further provided in the drying chamber 104, wherein the re-drying conveyor belt 5 is located parallel to and below the drying conveyor belt 101, and wherein the conveying direction of the re-drying conveyor belt 5 is opposite to that of the drying conveyor belt 101;

[0031] An online moisture detection mechanism 4 is provided above the discharge end of the drying conveyor belt 101, and a guide plate 2 is hinged at the discharge end of the drying conveyor belt 101. The guide plate 2 forms a lifting and lowering cooperation with the drying chamber 104 through a lifting mechanism 3, and the lifting mechanism 3 forms a linkage cooperation with the online moisture detection mechanism 4. A first collecting groove 6 is provided on the side of the guide plate 2 away from the hinged end. When the guide plate 2 is lifted, the discharge end of the drying conveyor belt 101 forms a guiding cooperation with the first collecting groove 6 through the guide plate 2, and the first collecting groove 6 is located above the re-drying conveyor belt 5.

[0032] In Example 1, a drying device is provided for controlling the moisture content of Chinese medicinal materials. A belt dryer 1 is used as the basis for preliminary drying. Hot air is generated by a hot air blower 102 and enters a drying chamber 104 through an air supply duct 103. The entire drying conveyor belt 101 is preliminarily dried from top to bottom. After the preliminary drying, the preliminarily dried medicinal materials are tested online by an online moisture detection mechanism 4.

[0033] When the moisture exceeds the set value, the lifting mechanism 3 contracts, causing the guide plate 2 to drop and change the guide direction. At this time, the material will slide directly onto the re-drying conveyor belt 5 due to the angle of the guide plate 2, and re-enter the drying chamber 104 for drying. Since the hot air enters the drying chamber 104 from top to bottom, the temperature during re-drying is lower than that of the initial drying, so that the moisture is dried again but not too dry, and the re-dried medicinal materials are collected on the other side;

[0034] When the moisture content does not exceed the set value, the lifting mechanism 3 outputs to lift the guide plate 2 to change the guide direction. At this time, the material will slide directly into the first collecting trough 6 due to the angle of the guide plate 2, and the medicinal materials with qualified moisture content will be collected. This part of the medicinal materials will no longer be re-dried to avoid excessive drying that is not conducive to processing, which is convenient for controlling the moisture content of the medicinal materials and ensuring the drying effect.

[0035] As a preferred embodiment 2, Figure 3 As shown, when the lifting mechanism 3 is output, the guide plate 2 is lifted around the hinged end, and the discharge end of the drying conveyor belt 101 forms a guide cooperation with the first collecting trough 6 through the guide plate 2, so that the initially dried medicinal materials can be directly collected through the first collecting trough 6 when the moisture content is qualified;

[0036] like Figure 4 As shown, when the lifting mechanism 3 contracts, the guide plate 2 descends around the hinged end, and the discharge end of the drying conveyor belt 101 forms a guide cooperation with the feed end of the re-drying conveyor belt 5 through the guide plate 2, so that the initially dried medicinal materials can enter the re-drying conveyor belt 5 for re-drying operation when the moisture content exceeds the standard.

[0037] As a preferred embodiment 3, one end of the guide plate 2 is hingedly matched with the inner wall of the drying chamber 104 at the bottom of the discharge end of the drying conveyor belt 101 through a hinge rod, and the guide plate 2 rotates in the vertical direction around the hinge, which facilitates the rotation of the guide plate 2 and thus changes the direction of the material guiding.

[0038] As a preferred embodiment 4, during the guiding process, the angle of the guiding plate 2 is used to make the medicinal materials slide naturally under the influence of gravity. Therefore, the angle between the guiding plate 2 and the vertical direction is always an acute angle, ensuring the guiding function of the guiding plate 2. At the same time, the angle between the guiding plate 2 and the vertical direction when it is lifted is greater than the angle between the guiding plate 2 and the vertical direction when it is lowered, which facilitates the medicinal materials to slide to different places according to different guiding directions.

[0039] As a preferred embodiment 5, baffles may be provided on both sides of the guide plate 2 and both sides of the feed end of the re-drying conveyor belt 5 to prevent the medicinal materials from falling out.

[0040] As a preferred embodiment 6, two lifting mechanisms 3 are provided at the bottom of the material guide plate 2, and the two lifting mechanisms 3 are symmetrically arranged about the middle position of the bottom of the material guide plate 2, and the projection of each lifting mechanism 3 at the bottom of the material guide plate 2 is parallel to the middle line of the material guide plate 2. To ensure the force stability of the material guide plate 2, the rotation of the material guide plate 2 is controlled by the lifting mechanism 3, and the lifting mechanism 3 is linked with the moisture online detection mechanism 4 to realize the automatic control of lifting or lowering according to the moisture content.

[0041] As a preferred embodiment 7, the lifting mechanism 3 includes an electric telescopic rod 302, the fixed end of the electric telescopic rod 302 is hinged with the drying chamber 104 through a hinge 301, and the output end of the electric telescopic rod 302 is hinged with the bottom of the guide plate 2 away from the hinge end through the hinge 301. The specific structure of the lifting mechanism 3 is provided to ensure the lifting and lowering of the guide plate 2.

[0042] As a preferred embodiment 8, the length of the re-drying conveyor belt 5 is greater than the length of the drying conveyor belt 101, and both ends of the re-drying conveyor belt 5 are exposed from the drying chamber 104, ensuring the length of the re-drying conveyor belt 5, making it easier for the guide plate 2 to guide the medicinal materials onto the re-drying conveyor belt 5.

[0043] As a preferred embodiment 9, a second collecting trough 7 is provided at the discharge end of the re-drying conveyor belt 5, and the discharge end of the re-drying conveyor belt 5 forms a feeding match with the second collecting trough 7, so as to facilitate the collection of re-drying medicinal materials.

[0044] As a preferred embodiment 10, an online moisture detection mechanism 4 is provided above the discharge end of the re-drying conveyor belt 5 to further grasp the moisture content of the re-drying medicinal materials. If the moisture content is still unqualified, the medicinal materials can be directly put into the drying conveyor belt 101 for preliminary drying again.

[0045] As a preferred embodiment 11, a control box 8 is provided on one side of the belt dryer 1, and the lifting mechanism 3 is linked with the online moisture detection mechanism 4 through the control box 8.

[0046] A controller is provided in the control box 8, and a touch screen and a voice announcer are provided on the surface of the control box 8. The moisture online detection mechanism 4 located above the discharge end of the drying conveyor belt 101 forms a linkage with the lifting mechanism 3 through the controller, thereby realizing automatic control of the material feeding direction according to the moisture content;

[0047] The online moisture detection mechanism 4 located above the discharge end of the re-drying conveyor belt 5 is linked with the voice announcer through the controller. When the moisture content of the medicinal materials after re-drying is unqualified, the staff is reminded in time that it may be necessary to re-dry the batch of dried medicinal materials. The touch screen is used to set the basic parameters of the dryer 1 and display the data collected by the two online moisture detection mechanisms 4.

[0048] As a preferred embodiment 12, the online moisture detection mechanism 4 includes a mounting rod 401, both ends of which are detachably fixed to the inner wall of the drying chamber 104, and the mounting rod 401 is kept horizontal, and the bottom of the mounting rod 401 is evenly spaced along the axial direction with a plurality of detection ends of online moisture content monitors 402. The mounting rod 401 is used to install the detection ends of the online moisture content monitors 402, so that the detection ends of the online moisture content monitors 402 are evenly distributed along a straight line above the discharge end of the corresponding conveyor belt, and the online moisture content monitor 402 can use an existing near-infrared online moisture tester.

[0049] As a preferred embodiment 13, the bottoms of the first collecting tank 6 and the second collecting tank 7 are respectively provided with detachable mounting frames, and the first collecting tank 6 and the second collecting tank 7 are both supported by the ground through corresponding mounting frames.

[0050] The working principle of this utility model:

[0051] The utility model provides a drying device that is convenient for controlling the moisture content of Chinese medicinal materials. The belt dryer 1 is used as the basis for preliminary drying. Hot air is generated by a hot air blower 102 and enters a drying chamber 104 through an air supply duct 103. The entire drying conveyor belt 101 is preliminarily dried from top to bottom. After the preliminary drying, the preliminarily dried medicinal materials are tested online by an online moisture detection mechanism 4.

[0052] When the moisture exceeds the set value, the lifting mechanism 3 contracts, causing the guide plate 2 to drop and change the guide direction. At this time, the material will slide directly onto the re-drying conveyor belt 5 due to the angle of the guide plate 2, and re-enter the drying chamber 104 for drying. Since the hot air enters the drying chamber 104 from top to bottom, the temperature during re-drying is lower than that of the initial drying, so that the moisture is dried again but not too dry, and the re-dried medicinal materials are collected on the other side;

[0053] When the moisture content does not exceed the set value, the lifting mechanism 3 outputs to lift the guide plate 2 to change the guide direction. At this time, the material will slide directly into the first collecting trough 6 due to the angle of the guide plate 2, and the medicinal materials with qualified moisture content will be collected. This part of the medicinal materials will no longer be re-dried to avoid excessive drying that is not conducive to processing, which is convenient for controlling the moisture content of the medicinal materials and ensuring the drying effect.

Claims

1. A drying device for controlling the moisture content of Chinese medicinal materials, comprising a belt dryer (1), wherein a drying chamber (104) is provided in the dryer (1), wherein a drying conveyor belt (101) passing through the dryer (1) is provided in the drying chamber (104), wherein a hot air blower (102) is provided on the top of the dryer (1), wherein the output end of the hot air blower (102) is connected to the drying chamber (104) via an air supply duct (103), wherein the device is characterized in that: A re-drying conveyor belt (5) penetrating the dryer (1) is further provided in the drying chamber (104); the re-drying conveyor belt (5) is located parallel to and below the drying conveyor belt (101); and the conveying direction of the re-drying conveyor belt (5) is opposite to that of the drying conveyor belt (101); An online moisture detection mechanism (4) is provided above the discharge end of the drying conveyor belt (101); a guide plate (2) is hingedly connected to the discharge end of the drying conveyor belt (101); the guide plate (2) forms a lifting cooperation with the drying chamber (104) through a lifting mechanism (3); the lifting mechanism (3) forms a linkage cooperation with the online moisture detection mechanism (4); a first collecting groove (6) is provided on a side of the guide plate (2) away from the hinged end; when the guide plate (2) is lifted, the discharge end of the drying conveyor belt (101) forms a guide cooperation with the first collecting groove (6) through the guide plate (2); and the first collecting groove (6) is located above the re-drying conveyor belt (5).

2. The drying equipment for facilitating moisture control of Chinese medicinal materials according to claim 1, characterized in that: When the lifting mechanism (3) is output, the guide plate (2) is lifted around the hinged end, and the discharge end of the drying conveyor belt (101) forms a guide cooperation with the first collecting trough (6) through the guide plate (2); When the lifting mechanism (3) contracts, the guide plate (2) descends around the hinged end, and the discharge end of the drying conveyor belt (101) forms a guide cooperation with the feed end of the re-drying conveyor belt (5) through the guide plate (2).

3. The drying equipment for facilitating moisture control of Chinese medicinal materials according to claim 2 is characterized in that: One end of the guide plate (2) is hingedly engaged with the inner wall of the drying chamber (104) at the bottom of the discharge end of the drying conveyor belt (101) via a hinge rod, and the guide plate (2) rotates in a vertical direction around the hinge.

4. The drying equipment for facilitating moisture control of Chinese medicinal materials according to claim 3 is characterized in that: Two lifting mechanisms (3) are provided at the bottom of the material guide plate (2), the two lifting mechanisms (3) are symmetrically arranged about the middle position of the bottom of the material guide plate (2), and the projection of each lifting mechanism (3) on the bottom of the material guide plate (2) is parallel to the middle line of the material guide plate (2).

5. The drying device for facilitating moisture control of Chinese medicinal materials according to any one of claims 1 to 4, characterized in that: The lifting mechanism (3) comprises an electric telescopic rod (302), the fixed end of the electric telescopic rod (302) being hingedly matched with the drying chamber (104) via a hinge (301), and the output end of the electric telescopic rod (302) being hingedly matched with the bottom of the guide plate (2) away from the hinge end via the hinge (301).

6. The drying equipment for facilitating moisture control of Chinese medicinal materials according to claim 1, characterized in that: The length of the re-drying conveyor belt (5) is greater than the length of the drying conveyor belt (101), and both ends of the re-drying conveyor belt (5) are exposed from the drying chamber (104).

7. The drying equipment for facilitating moisture control of Chinese medicinal materials according to claim 1, characterized in that: A second collecting trough (7) is provided at the discharge end of the re-drying conveyor belt (5), and the discharge end of the re-drying conveyor belt (5) and the second collecting trough (7) form a feeding cooperation.

8. The drying equipment for facilitating moisture control of Chinese medicinal materials according to claim 1, characterized in that: An online moisture detection mechanism (4) is provided above the discharge end of the re-drying conveyor belt (5).

9. The drying equipment for facilitating moisture control of Chinese medicinal materials according to claim 1, characterized in that: A control box (8) is provided on one side of the belt dryer (1), and the lifting mechanism (3) is linked with the online moisture detection mechanism (4) through the control box (8).

10. The drying device for facilitating moisture control of Chinese medicinal materials according to any one of claims 1, 8 or 9, characterized in that: The online moisture detection mechanism (4) comprises a mounting rod (401), the two ends of which are respectively detachably fixedly matched with the inner wall of the drying chamber (104), and the mounting rod (401) is kept horizontal, and the bottom of the mounting rod (401) is provided with detection ends of a plurality of online moisture content monitors (402) arranged at equal intervals along the axial direction.

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