Pellet filling switch valve of capsule machine

Abstract

The utility model provides a pellet filling switch valve of a capsule machine, which comprises a blanking mechanism and a valve, the blanking mechanism comprises a conical hopper, a stirring paddle and a feeding screw rod, the stirring paddle and the feeding screw rod are arranged in the conical hopper, a discharge port is arranged below the conical hopper, and the valve comprises a valve plate and a spring; the feeding screw rotates to push materials to enable the materials to extrude the valve plate towards the direction of the discharging port, so that the valve plate has a discharging position for opening the discharging port and compressing / stretching the spring, and the valve plate has a closing position for closing the discharging port under the action of resilience force of the spring when the feeding screw stops rotating; according to the device, the valve is arranged at the discharge port of the conical hopper, so that the discharging and filling rhythm of pellets in the conical hopper is controlled, and leakage is avoided; and the materials are discharged through stirring of the stirring paddle and rotation and pushing of the feeding screw rod in the conical hopper, so that the materials are discharged uniformly and smoothly, and the discharging speed is controllable.

Description

Technical Field

[0001] The utility model relates to the technical field of capsule machines, and particularly to a micro-pill filling switch valve for a capsule machine. Background Art

[0002] At present, capsule machines are widely used in the field of capsule manufacturing. Capsule machines usually are equipped with powder filling devices. For example, a powder filling device for a capsule machine disclosed in Chinese Utility Model CN202020396038.6 includes a capsule machine frame, a filling mechanism, a dual-axis power mechanism, a servo motor, and a cylinder. The dual-axis structure of this device performs powder filling and the movement of the storage hopper respectively under the drive of the servo motor and the cylinder, and is provided with fastening screws to adjust the rotation angle.

[0003] Micro-pills (Pellets) are spherical or quasi-spherical solid dosage forms with a relatively small diameter. They can also be filled into capsules, pressed into tablets, or made into other preparations. Micro-pills are a multi-unit oral dosage form. Usually, the dosage of a single administration consists of dozens to hundreds of small pills, and different types of micro-pills such as sustained-release and enteric-coated can be made. Compared with granules or powders, micro-pills have better fluidity. When filling micro-pills into capsules, no glidants are required, and the weight difference is smaller compared with filling capsules with powders. Micro-pills are often used to prepare compound preparations.

[0004] The applicant has been engaged in the research and development and improvement of pharmaceutical equipment for a long time. In view of the good fluidity of micro-pills, a micro-pill filling switch valve for a capsule machine is designed. Its structure is simple and easy to install, which can avoid the leakage of micro-pills in the capsule machine during the feeding process due to good fluidity, and can control the discharge of micro-pills during the process of feeding from the hopper to the metering disk. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the disadvantages and deficiencies existing in the prior art, and to provide a micro-pill filling switch valve for a capsule machine. The technical solution adopted by the utility model is as follows:

[0006] A micro-pill filling switch valve for a capsule machine includes a feeding mechanism and a valve. The feeding mechanism includes a conical hopper, a stirring paddle and a feeding screw arranged in the conical hopper. The conical hopper has a discharge port at the lower part. The valve includes a valve plate and a spring. The feeding screw rotates to push the material, so that the material is extruded towards the discharge port to push the valve plate, and then the valve plate has a discharge position to open the discharge port and compress / stretch the spring. In addition, when the feeding screw stops rotating, the valve plate has a closed position to close the discharge port under the action of the spring return force.

[0007] Preferably, the stirring paddle and the feeding screw are coaxially arranged and rotate synchronously.

[0008] Preferably, the valve includes a mounting portion and a valve plate. A limiting post is connected below the feeding screw, and the mounting portion and the spring are sleeved on the limiting post; the limiting post is integrally connected or fixedly connected to the feeding screw, and the diameter of the limiting post is smaller than that of the feeding screw. The spring is limited between the mounting portion and the protruding portion at the end of the limiting post. When the valve plate is in the closed position, the mounting portion abuts against the bottom surface of the feeding screw.

[0009] Preferably, the conical hopper includes a tubular blanking channel extending therefrom. The feeding screw extends from the conical hopper into the blanking channel, and a valve is provided at one end of the blanking channel away from the conical hopper; the feeding screw protrudes with a downward spiral, and a gap for relative rotation is left between the downward spiral and the inner wall of the blanking channel.

[0010] Preferably, the valve plate has a conical structure that is smaller at the top and larger at the bottom. The pointed part of the conical valve plate extends into the conical hopper, the conical bottom of the valve plate is located outside the discharge port, and the maximum diameter of the conical bottom is larger than the diameter of the discharge port.

[0011] Preferably, a flange is extended and provided on the conical bottom of the valve plate, and the flange fits against the lower end surface of the discharge port when the valve plate is in the closed position.

[0012] The beneficial effects of the present invention are as follows: By providing a valve at the discharge port of the conical hopper, the present device controls the feeding and filling rhythm of the pellets in the conical hopper, avoiding leakage; in the conical hopper, the material is discharged by stirring with a stirring paddle and rotating and pushing the material by the feeding screw, so that the material is uniform and smooth during discharging, and the discharging speed is controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, obtaining other drawings without creative efforts still belongs to the scope of the present invention.

[0014] Figure 1 is a schematic diagram of the main structure of the present device;

[0015] Figure 2 is a schematic diagram of the structure of the capsule machine in Embodiment 1;

[0016] Figure 3 is Figure 1 the enlarged view at A in

[0017] In the figure: 101 - feeding screw, 1011 - lower rotating helix, 102 - valve, 1021 - installation part, 1022 - valve plate, 103 - spring, 1031 - limit post, 104 - stirring paddle, 105 - motor, 106 - conical hopper, 206 - punching rod, 207 - leveling block, 208 - measuring disk, 210 - swing knife transmission device, 211 - central rotating disk. Detailed implementation mode

[0018] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] It should be noted that all the expressions using "first" and "second" in the embodiments of the present utility model are used to distinguish two entities or parameters with the same name but different, so it can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present utility model. This will not be repeated in the subsequent embodiments.

[0020] The direction and position terms mentioned in the present utility model, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "top", "bottom", "side", etc., are only the directions or positions with reference to the accompanying drawings. Therefore, the direction and position terms used are for explaining and understanding the present utility model, rather than a limitation on the protection scope of the present utility model.

[0021] Embodiment 1

[0022] As Figures 1-3 shown, a micro - pill filling switch valve of a capsule machine, the capsule machine includes a capsule machine frame, a feeding mechanism, and a filling mechanism. The feeding mechanism includes a conical hopper 106, a stirring paddle 104 arranged in the conical hopper 106, and a feeding component. A feeding channel and a discharge port are extended and arranged below the conical hopper 106. The feeding component includes a feeding screw 101 extending from the conical hopper 106 into the feeding channel. The feeding screw 101 rotates coaxially with the stirring paddle 104, and a valve is arranged at one end of the feeding screw 101 far from the conical hopper 106.

[0023] The micro - pill filling switch valve includes a feeding mechanism and a valve 102. The valve 102 includes a valve plate 1022 and a spring 103. The feeding screw 101 rotates to push the material, so that the material extrudes the valve plate 1022 towards the discharge port, and thus the valve plate 1022 has a discharge position for opening the discharge port and compressing the spring 103. And after the feeding screw 101 stops rotating, the valve plate 1022 has a closing position for closing the discharge port under the action of the resilience of the spring 103.

[0024] The valve 102 includes a mounting portion 1021 and a valve plate 1022. A limiting post 1031 is fixedly connected below the feeding screw 101, and the mounting portion 1021 and the spring 103 are sleeved on the limiting post 1031; the diameter of the limiting post 1031 is smaller than that of the feeding screw 101, and the spring 103 is limited between the mounting portion 1021 and the convex portion at the end of the limiting post 1031. When the valve plate 1022 is in the closed position, the mounting portion 1021 abuts against the bottom surface of the feeding screw 101.

[0025] The feeding screw 101 is convexly provided with a downward spiral 1011, and only a gap for relative rotation is left between the downward spiral 1011 and the inner wall of the blanking channel; the valve plate 1022 is a conical structure with a smaller upper part and a larger lower part. The conical tip part of the valve plate 1022 extends into the blanking channel of the conical hopper 106, and the maximum diameter of the conical bottom of the valve plate 1022 is larger than the diameter of the discharge port; a flange is extended outward from the conical bottom of the valve plate 1022, and the flange abuts against the lower end surface of the discharge port when the valve plate 1022 is in the closed position.

[0026] The filling mechanism includes a punching rod 206, a scraping block 207, a metering disk 208, a material level sensor 209, a swing knife transmission device 210, and a central rotating disk 211; after the valve 102 is opened, the pellets in the conical hopper 106 will flow into the metering holes on the metering disk 208. When the material level of the pellets in the metering holes rises and the material level sensor 209 detects that the set height is reached, the feeding screw stops rotating. At this time, the resultant force of the top thrust of the material discharge and the gravity of the material below the lowermost downward spiral is less than the resilience of the spring, and the valve 102 closes; the pellets in the conical hopper 106 will flow into all the metering holes with the intermittent rotation of the metering disk 208.

[0027] A blanking hole is formed on the swing knife 2101. The swing knife 2101 is located between the lower end surface of the metering disk 208 and the upper surface of the capsule lower die, and has a material blocking position where the blanking hole does not coincide with the metering hole, and a blanking position where the blanking hole coincides with the metering hole and the capsule lower shell opening on the central rotating disk 211. The setting of the blanking swing knife is prior art, such as the patent "A filling device for a capsule machine CN203777324U"; the swing knife transmission device 210 drives the swing knife 2101 to swing and switch between the material blocking position and the blanking position.

[0028] A capsule lower mold is installed on the central rotating disk 211, and a capsule shell with an upward opening is placed in the capsule lower mold. The punch rod 206 corresponds to the metering holes on the metering disk 208. In this embodiment, the metering disk 208 has six stations. When one of the stations rotates to the filling station on the central rotating disk 211, during the rotation of the metering disk 208, the swing knife 2101 is in the material blocking position, so that the holes corresponding to the filling station on the metering disk 208 are sealed by the swing knife to prevent the pellets from flowing down. The leveling block 207 is attached to the surface of the metering disk 208 to scrape off the excess microcapsules, so that the pellets exactly fill the metering holes. The positions of the metering holes exactly correspond to the capsule lower mold on the central rotating disk 211. Then the swing knife 2101 swings to the material discharging position, so that the pellets fall into the capsule shell in the capsule lower mold. After the material discharging is completed, this station continues to rotate, so that the metering holes of another station complete the material discharging, and so on in a cycle.

[0029] The above-disclosed are only the preferred embodiments of the present invention, and of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A micro-pill filling switch valve for a capsule machine, characterized in that: The invention comprises a material discharge mechanism and a valve (102), wherein the material discharge mechanism comprises a cone bucket (106), a stirring paddle (104) arranged in the cone bucket (106) and a feeding screw (101), wherein a discharge port is provided below the cone bucket (106), and the valve (102) comprises a valve plate (1022) and a spring (103); the feeding screw (101) rotates to push the material so that the material presses the valve plate (1022) in the direction of the discharge port, thereby making the valve plate (1022) have a discharge position in which the discharge port is opened and the spring (103) is compressed / stretched, and the feeding screw stops rotating and the valve plate (1022) has a closed position in which the discharge port is closed under the action of the rebound force of the spring (103).

2. The micro-pill filling switch valve of a capsule machine according to claim 1, characterized in that: The stirring paddle (104) and the feeding screw (101) are coaxially arranged and rotate synchronously.

3. The micro-pill filling switch valve of a capsule machine according to claim 1, characterized in that: The valve (102) comprises a mounting portion (1021) and a valve plate (1022); a limiting column (1031) is connected below the feeding screw; and the mounting portion (1021) and the spring (103) are sleeved on the limiting column (1031).

4. The micro-pill filling switch valve of a capsule machine according to claim 3, characterized in that: The limiting column (1031) is integrally connected or fixedly connected to the feeding screw (101), and the diameter of the limiting column is smaller than the diameter of the feeding screw (101). The spring (103) is limited between the mounting portion (1021) and the raised portion at the end of the limiting column (1031). When the valve plate (1022) is in the closed position, the mounting portion (1021) abuts against the bottom surface of the feeding screw (101).

5. The micro-pill filling switch valve of a capsule machine according to claim 1, characterized in that: The cone bucket (106) comprises an extended tubular feeding channel, the feeding screw (101) extends from the cone bucket (106) into the feeding channel, and a valve (102) is provided at one end of the feeding channel away from the cone bucket (106).

6. The micro-pill filling switch valve of a capsule machine according to claim 5, characterized in that: The feeding screw (101) is provided with a protruding downward spiral (1011), and a gap is left between the downward spiral (1011) and the inner wall of the feeding channel for relative rotation.

7. A pellet filling switch valve for a capsule machine according to any one of claims 1 to 6, characterized in that: The valve plate (1022) is a conical structure that is small at the top and large at the bottom. The conical tip of the valve plate (1022) extends into the conical bucket (106). The conical bottom of the valve plate (1022) is located outside the discharge port, and the maximum diameter of the conical bottom is greater than the diameter of the discharge port.

8. The micro-pill filling switch valve of a capsule machine according to claim 7, characterized in that: The conical bottom of the valve plate (1022) is provided with a flange extending toward the outer periphery, and the flange is in contact with the lower end surface of the discharge port when the valve plate (1022) is in a closed position.

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