Discharging mechanism of wet granulation machine

Abstract

The utility model discloses a discharge mechanism of a wet granulation machine, which relates to the technical field of medicine production and comprises a discharge pipe communicated with a discharge port of the wet granulation machine, the bottom surface of the discharge pipe is provided with a discharge pipe with a downward opening, and the outer wall of the discharge pipe is provided with a knocking component for knocking the discharge pipe; the knocking assembly comprises a sleeve, the discharging pipe is sleeved with the sleeve in an axial sliding mode, and a driving piece used for driving the sleeve to vertically slide along the discharging pipe is arranged on the bottom face of the discharging pipe. The transmission rack is axially arranged along the outer wall of the discharging pipe, and a transmission gear meshed with the transmission rack is rotationally arranged on the inner side wall of the sleeve; and the incomplete gear is rotationally mounted on the inner side wall of the sleeve and is coaxial with the transmission gear. According to the utility model, the outer wall of the discharge pipe can be continuously knocked, so that impurities adhered to the interior of the discharge pipe can be loosened through vibration, and the effects of facilitating blanking and effectively preventing blockage are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical production, and particularly relates to a discharging mechanism of a wet granulator. Background Technique

[0002] In many industries such as pharmaceutical, chemical, and food processing, the wet granulation technology is a commonly used granule preparation method. By mixing raw materials and adding an appropriate amount of binder or solvent, and performing operations such as stirring and cutting in a specific device, granules with a certain shape and size are formed. However, in this process, the existing wet granulators and their discharging systems have obvious defects and deficiencies.

[0003] The granules prepared by the wet granulator have a relatively high humidity, which is determined by its process characteristics. In the granulation process, in order to ensure that the granules can be well formed and have a certain strength, an appropriate amount of liquid binder or solvent needs to be added. Although a certain degree of drying treatment will be carried out in the subsequent process, the granules still contain a certain amount of moisture when discharged. Such wet granules are prone to adhesion to the inner wall of the conveying pipeline during the conveying process.

[0004] At the same time, due to the complexity of raw materials and the influence of the granulation environment during the wet granulation process, a large amount of impurities will inevitably be carried on the surface of the granules. The sources of these impurities are extensive and may include unreacted raw material particles, additives in the binder, wear particles inside the granulation equipment, etc.

[0005] When the granules are conveyed in the discharging pipeline, these impurities are easily brought into contact with the inner wall of the pipeline and adhered to it under the drive of the granules. As the production continues, more and more impurities continuously adhere to the pipe wall and gradually accumulate to form a thick attachment. This not only causes a reduction in the local pipe diameter, but also makes the inner wall of the pipeline rough, increasing the resistance to the flow of granules. When the pipe diameter is reduced, the discharging capacity of the granules is severely affected, and the original smooth discharging process becomes slow and unstable, and even blockage may occur, affecting production efficiency and product quality and increasing production costs.

[0006] In view of this, the present application is specifically proposed. Content of the Utility Model

[0007] The purpose of the utility model is to provide a discharging mechanism of a wet granulator to solve the problems raised in the above background technique.

[0008] To solve the above technical problems, the present utility model provides a discharge mechanism for a wet granulator, including a discharge pipe communicated with the discharge port of the wet granulator. The bottom surface of the discharge pipe is provided with a discharge pipe opening downward, and a knocking component for knocking the discharge pipe is arranged on the outer wall of the discharge pipe; the knocking component includes,

[0009] a sleeve, axially slidably sleeved outside the discharge pipe, and a driving member for driving the sleeve to slide vertically along the discharge pipe is arranged on the bottom surface of the discharge pipe;

[0010] a transmission rack, axially arranged along the outer wall of the discharge pipe, and a transmission gear meshed with the transmission rack is rotatably arranged on the inner side wall of the sleeve;

[0011] the incomplete gear includes a toothed portion arranged along a quarter of its outer peripheral wall and a toothless portion arranged along three quarters of its outer peripheral wall;

[0012] a sliding tooth rod, slidably arranged on the side wall of the sleeve, a tooth groove meshed with the incomplete gear is arranged on its bottom surface, and a return spring is sleeved on its outer wall.

[0013] Further, a fixing seat is installed on the inner wall of the sleeve, the transmission gear is rotatably arranged inside the fixing seat, one end of the return spring is fixedly connected with the inner wall of the sleeve, and the other end of the return spring is fixedly connected with the outer side wall of the fixing seat.

[0014] Further, one end of the sliding tooth rod far from the outer wall of the discharge pipe is connected with a knocking head, and the knocking head is made of rubber.

[0015] Further, the front end of the discharge pipe is connected with a connecting plate, and the discharge pipe is fixed to the wet granulator through the connecting plate.

[0016] Further, the rear end of the discharge pipe is connected with a sealing pipe, a sealing cavity is arranged inside the sealing pipe, a piston plate is slidably installed inside the sealing cavity, a piston rod is arranged at the front end of the piston plate, a piston head is fixedly connected to the end of the piston rod far from the piston plate, and a first air hole and a second air hole are arranged on the outer wall of the sealing pipe.

[0017] Further, the piston head is of a frustum structure, and the maximum outer diameter of the piston head is adapted to the inner diameter of the discharge pipe.

[0018] Further, an annular groove is arranged on the outer wall of the piston head, and a sealing ring is embedded inside the annular groove, and the sealing ring abuts against the inner cavity of the discharge pipe.

[0019] Further, the driving member is an electric push rod, one end of the electric push rod is fixedly connected with the bottom surface of the discharge pipe, and the other end of the electric push rod is fixedly connected with the top surface of the sleeve.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. In the present utility model, during the rotation of the transmission gear, the incomplete gear fixed coaxially therewith is driven to rotate. The incomplete gear drives the sliding tooth bar engaged therewith to slide horizontally back and forth. During the reciprocating sliding of the sliding tooth bar, the outer wall of the discharge pipe can be continuously knocked, which helps to loosen the impurities adhered in the discharge pipe, achieving the effect of facilitating discharging and effectively preventing blockage.

[0022] 2. In the present utility model, the driving member can drive the sleeve to slide axially back and forth along the outer wall of the discharge pipe. During the sliding of the sleeve, the transmission gear installed on its inner wall will roll and engage with the transmission rack, thereby driving the transmission gear to rotate. And during the sliding of the sleeve along the discharge pipe, multiple points of the discharge pipe can be knocked simultaneously, further enhancing the knocking effect on the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front view structural schematic diagram of the present utility model;

[0024] Figure 2 is the rear view structural schematic diagram of the present utility model;

[0025] Figure 3 is the sectional structural schematic diagram of the present utility model;

[0026] Figure 4 is the structural schematic diagram of the knocking assembly in the present utility model.

[0027] In the figure: 1, connecting plate; 2, discharge pipe; 3, sealing pipe; 4, piston head; 5, discharge pipe; 6, sleeve; 7, sealing cavity; 8, piston plate; 9, piston rod; 10, first air hole; 11, second air hole; 12, electric push rod; 13, transmission rack; 14, fixed seat; 15, transmission gear; 16, sliding tooth bar; 17, incomplete gear; 18, return spring; 19, knocking head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1 - 4, the present utility model provides a technical solution: a discharging mechanism of a wet granulator, including a discharging pipe 2 communicated with the discharging port of the wet granulator. The bottom surface of the discharging pipe 2 is provided with a discharging pipe 5 with an opening downward, and a knocking assembly for knocking the discharging pipe 5 is arranged on the outer wall of the discharging pipe 5; the knocking assembly includes,

[0030] a sleeve 6, axially slidably sleeved outside the discharging pipe 5, and a driving member for driving the sleeve 6 to slide vertically along the discharging pipe 5 is arranged on the bottom surface of the discharging pipe 2;

[0031] a transmission rack 13, axially arranged along the outer wall of the discharging pipe 5, and a transmission gear 15 meshed with the transmission rack 13 is rotatably arranged on the inner side wall of the sleeve 6;

[0032] The incomplete gear 17 includes a toothed portion arranged along a quarter of its outer peripheral wall and a toothless portion arranged along three quarters of its outer peripheral wall;

[0033] a sliding tooth rod 16, slidably arranged on the side wall of the sleeve 6, a tooth groove meshed with the incomplete gear 17 is arranged on its bottom surface, and a return spring 18 is sleeved on its outer wall.

[0034] Specifically, in use, first, the discharging pipe 2 is aligned with the discharging port of the wet granulator, and the connecting plate 1 is fixed to the casing of the wet granulator to complete the overall installation of the discharging mechanism. After the installation is completed, the wet granulator starts the granulation operation;

[0035] After granulation is completed, the granular material will be discharged from the discharging pipe 2 into the interior of the discharging pipe 5 and then discharged from the discharging pipe 5. During the discharging process, the driving member can drive the sleeve 6 to axially reciprocate along the outer wall of the discharging pipe 5. During the sliding process of the sleeve 6, the transmission gear 15 installed on its inner wall will roll and mesh with the transmission rack 13, thereby causing the transmission gear 15 to rotate. During the rotation of the transmission gear 15, the incomplete gear 17 coaxially fixed with it is driven to rotate. The incomplete gear 17 drives the sliding tooth rod 16 meshed with it to horizontally reciprocate. During the reciprocating sliding process of the sliding tooth rod 16, the outer wall of the discharging pipe 5 can be continuously knocked. In addition, multi-point simultaneous knocking is more helpful for loosening the impurities adhered to the inner wall of the discharging pipe 5, achieving the effect of facilitating discharging and effectively preventing blockage.

[0036] It should be noted that since the incomplete gear 17 is a gear with a partial tooth profile, its tooth profile is not continuously distributed on the circumference, but a specific toothed area and toothless area are designed according to the working requirements.

[0037] The sliding tooth rod 16 meshes with the incomplete gear 17. When the incomplete gear 17 rotates, its teeth interact with the tooth groove of the sliding tooth rod 16, and the rotational motion of the incomplete gear 17 is converted into the linear motion of the sliding tooth rod 16.

[0038] When the toothed part of the incomplete gear 17 starts to mesh with the tooth groove of the sliding rack 16, as the incomplete gear 17 rotates, its teeth push the sliding rack 16 to move upward along a straight line direction. When the toothed part of the incomplete gear 17 is about to disengage, at this time, the sliding rack 16 reaches its maximum speed and maximum displacement in the forward movement, and its toothless part starts to correspond to the sliding rack 16. At this time, the sliding rack 16 loses the direct power transmission from the incomplete gear 17, and the sliding rack 16 will return to the initial position, thereby realizing the reciprocating movement effect of the sliding rack 16 relative to the discharge pipe 5.

[0039] Refer to Figure 1 , a fixed seat 14 is installed on the inner wall of the sleeve 6, and the transmission gear 15 is rotatably arranged inside the fixed seat 14. One end of the return spring 18 is fixedly connected to the inner wall of the sleeve 6, and the other end of the return spring 18 is fixedly connected to the outer wall of the fixed seat 14.

[0040] Specifically, the provided fixed seat 14 provides support for the installation of the transmission gear 15, which can improve the stability of the installation of the transmission gear 15 inside the sleeve 6.

[0041] Refer to Figure 4 , one end of the sliding rack 16 away from the outer wall of the discharge pipe 5 is connected with a knocking head 19, and the knocking head 19 is made of rubber material.

[0042] Specifically, the provided knocking head 19 can prevent the sliding rack 16 from making hard contact with the discharge pipe 5, and avoid damage to the discharge pipe 5 caused by long-term impact.

[0043] Refer to Figure 3 , the front end of the discharge pipe 2 is connected with a connecting plate 1, and the discharge pipe 2 is fixed to the wet granulator through the connecting plate 1.

[0044] Specifically, the provided connecting plate 1 increases the connection area between the discharge pipe 2 and the wet granulator, thereby improving the installation stability.

[0045] Refer to Figure 4 , the rear end of the discharge pipe 2 is connected with a sealing pipe 3, a sealing cavity 7 is arranged inside the sealing pipe 3, a piston plate 8 is slidably installed inside the sealing cavity 7, a piston rod 9 is arranged at the front end of the piston plate 8, one end of the piston rod 9 away from the piston plate 8 is fixedly connected with a piston head 4, and a first air hole 10 and a second air hole 11 are arranged on the outer wall of the sealing pipe 3.

[0046] Specifically, by selecting to inflate the inside of the first air hole 10 or the second air hole 11, under the pressure of the gas, the piston plate 8 can be pushed to slide along the inner wall of the sealing cavity 7. During the sliding process of the piston plate 8, the piston rod 9 and the piston head 4 can be driven to move synchronously, and then the piston head 4 can be driven to slide along the inner wall of the discharge pipe 2. When the piston head 4 slides forward, the discharge port of the wet granulator can be blocked to prevent material leakage during the granulation process. After granulation is completed, the piston head 4 slides backward and disengages from the discharge port of the wet granulator, and the granulated material after granulation is discharged from the discharge pipe 2 into the inside of the discharge pipe 5, thereby achieving the discharging effect.

[0047] Refer to Figure 3 , the piston head 4 is in the shape of a frustum of a cone, and the maximum outer diameter of the piston head 4 is adapted to the inner diameter of the discharge pipe 2.

[0048] Specifically, the piston head 4 provided can achieve a sealing effect and can block the discharge port of the wet granulator.

[0049] Refer to Figure 3 , an annular groove is provided on the outer wall of the piston head 4, and a sealing ring is embedded in the annular groove, and the sealing ring abuts against the inner cavity of the discharge pipe 2.

[0050] Specifically, the annular groove provided on the piston head 4 facilitates the installation of the sealing ring on the piston head 4. The sealing provided on the piston head 4 can improve the sealing performance between the piston head 4 and the inner cavity of the discharge pipe 2, and prevent leakage during the granulation process of the granulator.

[0051] Refer to Figure 2 , the driving member is an electric push rod 12, one end of the electric push rod 12 is fixedly connected to the bottom surface of the discharge pipe 2, and the other end of the electric push rod 12 is fixedly connected to the top surface of the sleeve 6.

[0052] Specifically, the telescopic movement of the electric push rod 12 can drive the sleeve 6 to slide axially back and forth along the outer wall of the discharge pipe 5.

Claims

1. A discharging mechanism of a wet granulator, comprising a discharging pipe (2) communicated with the discharging port of the wet granulator, characterized in that: The bottom surface of the discharge pipe (2) is provided with a discharge pipe (5) with an opening facing downwards, and a knocking component for knocking the discharge pipe (5) is arranged on the outer wall of the discharge pipe (5); the knocking component includes, a sleeve (6) which is axially slidably sleeved outside the discharge pipe (5), and a driving member for driving the sleeve (6) to slide vertically along the discharge pipe (5) is arranged on the bottom surface of the discharge pipe (2); a transmission rack (13) which is axially arranged along the outer wall of the discharge pipe (5), and a transmission gear (15) which is rotationally arranged on the inner side wall of the sleeve (6) and meshed with the transmission rack (13) is arranged; an incomplete gear (17) which is rotatably installed on the inner side wall of the sleeve (6) and coaxially arranged with the transmission gear (15), and the incomplete gear (17) includes a toothed portion arranged along one-fourth of its outer peripheral wall and a toothless portion arranged along three-fourths of its outer peripheral wall; a sliding tooth bar (16) which is slidably arranged on the side wall of the sleeve (6), a tooth groove meshed with the incomplete gear (17) is arranged on its bottom surface, and a return spring (18) is sleeved on its outer wall.

2. The discharging mechanism of a wet granulator according to claim 1, characterized in that: A fixing seat (14) is installed on the inner wall of the sleeve (6), the transmission gear (15) is rotationally arranged inside the fixing seat (14), one end of the return spring (18) is fixedly connected with the inner wall of the sleeve (6), and the other end of the return spring (18) is fixedly connected with the outer side wall of the fixing seat (14).

3. The discharging mechanism of a wet granulator according to claim 1, wherein: One end of the sliding tooth bar (16) far away from the outer wall of the discharge pipe (5) is connected with a knocking head (19), and the knocking head (19) is made of rubber material.

4. The discharging mechanism of a wet granulator according to claim 1, characterized in that: A connecting plate (1) is connected to the front end of the discharge pipe (2), and the discharge pipe (2) is fixed to the wet granulator through the connecting plate (1).

5. The discharging mechanism of a wet granulator according to claim 1, characterized in that: A sealing pipe (3) is connected to the rear end of the discharge pipe (2), a sealing cavity (7) is arranged inside the sealing pipe (3), a piston plate (8) is slidably installed inside the sealing cavity (7), a piston rod (9) is arranged at the front end of the piston plate (8), a piston head (4) is fixedly connected to one end of the piston rod (9) far away from the piston plate (8), and a first air hole (10) and a second air hole (11) are arranged on the outer wall of the sealing pipe (3).

6. The discharging mechanism of a wet granulator as described in claim 5, characterized in that: The piston head (4) has a frustum structure, and the maximum outer diameter of the piston head (4) is adapted to the inner diameter of the discharge pipe (2).

7. The discharging mechanism of a wet granulator according to claim 6, characterized in that: An annular groove is arranged on the outer wall of the piston head (4), and a sealing ring is embedded in the annular groove, and the sealing ring abuts against the inner cavity of the discharge pipe (2).

8. The discharging mechanism of a wet granulator as described in claim 1, characterized in that: The driving member is an electric push rod (12), one end of the electric push rod (12) is fixedly connected with the bottom surface of the discharge pipe (2), and the other end of the electric push rod (12) is fixedly connected with the top surface of the sleeve (6).

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