Stevia rebaudiana stem and leaf separating device

Abstract

The invention relates to the field of stevia rebaudiana processing devices, in particular to a stevia rebaudiana stem and leaf separating device which comprises a rack, a supporting pipe is fixed to the rack, a roller rotationally connected with the supporting pipe is arranged on the supporting pipe, and air holes penetrating through the roller are evenly formed in the roller in the supporting pipe. The supporting pipe is driven by a rotating motor to rotate, a sealing cover is further fixed in the supporting pipe above the roller, an air blower is fixed to the rack and connected with the sealing cover through an air blowing pipe, one side of the supporting pipe is further connected with a vacuum pump through an air suction pipe, and a slag discharging pipe with a valve is further fixed to the bottom of the supporting pipe. A material collecting belt is further arranged on the machine frame, one end of the material collecting belt extends into the roller, and the material collecting belt is driven by a material collecting motor to rotate. The device can realize complete separation of leaves and stems of stevia rebaudiana.

Description

Technical Field

[0001] The invention relates to the field of stevia processing devices, in particular to a stevia stem and leaf separation device. Background Art

[0002] Stevia is a perennial herb belonging to the Asteraceae family. Stevia is named for its sweet leaves. Stevia leaves are rich in stevioside, which is a low-calorie, high-sweetness natural sweetener. In addition, it has certain pharmacological effects and is one of the raw materials for the food and pharmaceutical industries. Stevia has been widely used as a medicine and diet, and the market for stevia is expanding.

[0003] Patent application number: CN202210426089.2 discloses a stevia leaf stalk separation device, including a frame, a fixed motor is fixedly connected to the left side of the frame, two transmission rods are rotatably connected to the left and right sides of the inner wall of the frame, and the right end of the upper transmission rod extends to the right side of the frame and is fixedly connected to one end of the fixed motor rotating shaft, and the sides of the two transmission rods are connected by transmission belt transmission, and the sides of the transmission belt are fixedly connected with a protrusion; the fixed motor rotates to drive the transmission rod to rotate so that the transmission belt drives the protrusion to rotate clockwise, and then the user transports the stevia to the transmission belt and cooperates with the protrusion to transport the stevia to a frame composed of two arc plates and round rods, and then the fixed motor cooperates with the belt so that the cylindrical rod drives the spiral rod to rotate, and the stevia in the frame is beaten and stirred, and the knocked-down stevia leaves are screened out through the gap between the cylindrical rods and fall on the first sieve, so that the stevia leaves and leaf stalks are separated, but this kind of method of separating the leaves and leaf stalks by filtering also has some small leaf stalks together with the leaves, which makes the leaves and leaf stalks unable to be completely separated.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a stevia stem and leaf separation device.

[0006] The present invention can be implemented by the following technical solutions:

[0007] The present invention discloses a stevia stem and leaf separation device, comprising a frame, a support tube fixed on the frame, a roller rotatably connected to the support tube is arranged on the support tube, air holes penetrating the roller are evenly arranged on the roller in the support tube, the support tube is driven to rotate by a rotary motor, a sealing cover is also fixed in the support tube above the roller, a blower is fixed on the frame, the blower is connected to the sealing cover through a blower pipe, one side of the support tube is also connected to a vacuum pump through an exhaust pipe, a slag discharge pipe with a valve is also fixed to the bottom of the support tube, a material receiving belt is also arranged on the frame, one end of the material receiving belt extends into the roller, and the material receiving belt is driven to rotate by a material receiving motor. The defoliated stevia is discharged into the drum, and the support tube is evacuated by a vacuum pump, and a negative pressure is formed in the cavity between the support tube and the drum. Since the leaf stalk is cylindrical, the leaf stalk cannot completely block the pores at the corresponding position, and the stevia leaves cover the pores. The stevia leaves are adsorbed on the pores of the drum, and the drum is driven to rotate by a rotary motor. The leaves adsorbed on the drum rotate with the drum. After the leaves rotate to the sealing cover position, air is blown into the sealing cover by a blower, and the leaves are separated from the drum. The leaves fall onto the collecting belt and are collected as the collecting belt runs, and the operation is cyclic. This device can completely separate the stevia leaves from the leaf stalks.

[0008] Preferably, a driving wheel is fixed to the output end of the rotating motor, a driven wheel is fixed to the drum, and the driven wheel is connected to the driving wheel via a synchronous belt.

[0009] Preferably, the blower includes a blower motor, a blower blade is fixed to the output end of the blower motor, and the blower is connected to the blower pipe through a conical air guide pipe.

[0010] Preferably, guide plates are also fixed obliquely in the support tubes on both sides of the slag discharge tube. Since the air holes have a certain diameter, some small leaf stems can pass through the air holes and fall between the roller and the support tube. By setting the guide plates, the leaf stems that fall between the roller and the support tube can be gathered to the position of the slag discharge tube, and the leaf stems can be discharged by opening the valve on the slag discharge tube.

[0011] Preferably, a feeding belt is also provided on the frame, one end of the feeding belt extends into the drum, and the feeding belt is driven to rotate by a feeding motor.

[0012] Preferably, baffles are fixed on both sides of the drum to prevent stevia leaves from falling from both sides of the drum.

[0013] Preferably, the frames on both sides of the receiving belt in the drum are symmetrically provided with rotating shafts, and sliding plates are fixed on the rotating shafts. The sliding plates are provided to gather the stevia leaves adsorbed by the pores onto the receiving belt.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The device can achieve complete separation of stevia leaves and leaf stems. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is another structural schematic diagram of the present invention from another angle;

[0019] Figure 3 A top view of the present invention;

[0020] In the figure: 1, frame; 2, support tube; 3, roller; 4, driven wheel; 5, rotating motor; 6, driving wheel; 7, synchronous belt; 8, air hole; 9, sealing cover; 10, blower; 11, blower motor; 12, fan blade; 13, baffle; 14, air guide pipe; 15, blower pipe; 16, exhaust pipe; 17, feeding belt; 18, feeding motor; 19, receiving belt; 20, receiving motor; 21, guide plate; 22, slag discharge pipe; 23, rotating shaft; 24, sliding plate; DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0022] Embodiment 1:

[0023] like Figures 1 to 3As shown, the present embodiment discloses a stevia stem and leaf separation device, comprising a frame 1, a support tube 2 is fixed on the frame 1, a roller 3 rotatably connected to the support tube 2 is arranged on the support tube 2, air holes 8 penetrating the roller 3 are evenly arranged on the roller 3 in the support tube 2, the support tube 2 is driven to rotate by a rotary motor 5, a sealing cover 9 is also fixed in the support tube 2 above the roller 3, a blower 10 is fixed on the frame 1, the blower 10 is connected to the sealing cover 9 through a blower pipe 15, one side of the support tube 2 is also connected to a vacuum pump through an exhaust pipe 16, a slag discharge pipe 22 with a valve is also fixed to the bottom of the support tube 2, a receiving belt 19 is also arranged on the frame 1, one end of the receiving belt 19 extends into the roller 3, and the receiving belt 19 is driven to rotate by a receiving motor 20. The defoliated stevia is discharged into the drum 3, and the support tube 2 is evacuated by a vacuum pump, and a negative pressure is formed in the cavity between the support tube 2 and the drum 3. Since the leaf stalk is cylindrical, the leaf stalk cannot completely block the pores 8 at the corresponding position, and the stevia leaves cover the pores 8. The stevia leaves are adsorbed on the pores 8 of the drum 3, and the drum 3 is driven to rotate by the rotating motor 5. The leaves adsorbed on the drum 3 rotate with the drum 3. After the leaves rotate to the position of the sealing cover 9, the blower 10 is used to blow air into the sealing cover 9, and the leaves are separated from the drum 3. The leaves fall onto the collecting belt 19 and are collected as the collecting belt 19 runs, and the operation is cyclic. The device can completely separate the stevia leaves from the leaf stalks.

[0024] A driving wheel 6 is fixed to the output end of the rotating motor 5 , a driven wheel 4 is fixed to the drum 3 , and the driven wheel 4 is connected to the driving wheel 6 via a synchronous belt 7 .

[0025] The blower 10 includes a blower motor 11 , a blower blade 12 is fixed to the output end of the blower motor 11 , and the blower 10 is connected to a blower pipe 15 via a conical air guide pipe 14 .

[0026] Among them, guide plates 21 are also fixed obliquely in the support tubes 2 on both sides of the slag discharge pipe 22. Since the air holes 8 have a certain diameter, some small leaf stems can pass through the air holes 8 and fall between the roller 3 and the support tube 2. By setting the guide plates 21, the leaf stems that fall between the roller 3 and the support tube 2 can be gathered to the position of the slag discharge pipe 22, and the leaf stems can be discharged by opening the valve on the slag discharge pipe 22.

[0027] A feeding belt 17 is also provided on the frame 1 , one end of the feeding belt 17 extends into the drum 3 , and the feeding belt 17 is driven to rotate by a feeding motor 18 .

[0028] Wherein, baffles 13 are fixed on both sides of the drum 3. The baffles 13 are provided to prevent the stevia leaves from falling from both sides of the drum 3.

[0029] Embodiment 2:

[0030] This embodiment discloses a stevia stem and leaf separation device. Based on the structure and principle of the first embodiment, the frame 1 on both sides of the receiving belt 19 in the drum 3 of the present embodiment is symmetrically provided with a rotating shaft 23, and a sliding plate 24 is fixed on the rotating shaft 23. The sliding plate 24 is provided to realize that the stevia leaves adsorbed by the pores 8 are dropped and gathered on the receiving belt 19.

[0031] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A stevia stem and leaf separation device, comprising a frame, characterized in that: A support tube is fixed on the frame, and a roller rotatably connected to the support tube is arranged on the support tube, and air holes penetrating the roller are evenly arranged on the roller in the support tube, and the support tube is driven to rotate by a rotary motor, and a sealing cover is also fixed in the support tube above the roller, and a blower is fixed on the frame, and the blower is connected to the sealing cover through a blower pipe, and one side of the support tube is also connected to a vacuum pump through an exhaust pipe, and a slag discharge pipe with a valve is also fixed to the bottom of the support tube, and a material receiving belt is also arranged on the frame, and one end of the material receiving belt extends into the roller, and the material receiving belt is driven to rotate by a material receiving motor.

2. The stevia stem and leaf separation device according to claim 1, characterized in that: A driving wheel is fixed on the output end of the rotating motor, a driven wheel is fixed on the drum, and the driven wheel is connected to the driving wheel through a synchronous belt.

3. The stevia stem and leaf separation device according to claim 1, characterized in that: The blower comprises a blower motor, a blower blade is fixed to the output end of the blower motor, and the blower is connected to the blower pipe through a conical air guide pipe.

4. The stevia stem and leaf separation device according to claim 1, characterized in that: Material guide plates are also obliquely fixed in the support pipes on both sides of the slag discharge pipe.

5. The stevia stem and leaf separation device according to claim 1, characterized in that: A feeding belt is also arranged on the frame, one end of which extends into the drum, and the feeding belt is driven to rotate by a feeding motor.

6. The stevia stem and leaf separation device according to claim 1, characterized in that: Baffles are fixed on both sides of the drum.

7. The stevia stem and leaf separation device according to claim 1, characterized in that: Rotating shafts are symmetrically arranged on the frames at both sides of the receiving belt in the drum, and sliding plates are fixed on the rotating shafts.

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