CN204307601U - The screen cloth grid structure of dry granulating machine - Google Patents

Abstract

The utility model discloses a screen frame structure of a dry granulator, which comprises a screen assembly (30), which includes a screen (301) and a frame body (302) for installing the screen (301); Assemblies, the support assembly installs the screen assembly (30) on the mounting base (10) and the front end plate (20) arranged in parallel and opposite, the support assembly includes a and at least one support rod (101) on the front end plate (20), and an installation hole (303) opened on the frame body (302) to match the support rod (101). The screen frame structure mainly solves the technical problem of difficult installation and disassembly of the screen in the granulation mechanism of the existing dry granulator, and greatly facilitates the off-line cleaning of the screen when changing batches of materials or having different particle size requirements.

Description

Screen mesh frame structure of dry granulator

technical field

The utility model belongs to the field of design and manufacture of a dry granulator, in particular to a screen frame structure of a dry granulator.

Background technique

In the pharmaceutical industry, dry granulators are widely used in the processing of various active pharmaceutical raw materials and one or more excipients. Most of these raw materials are fine powders with different particle sizes, uneven density, poor fluidity, and easy layering. These raw materials must be processed through the granulation process before they can be used in tablet compression, capsule filling, granules or other pharmaceutical processing steps. From a process point of view, roller compaction is considered dry granulation. Apart from the components of the finished product, no other chemicals are added. Usually, no binders or liquids are added and the granules are mechanically compacted.

A general dry granulator consists of a feeding mechanism, a roller extrusion mechanism, and a granulating mechanism. The granulation mechanism is an important part of the dry granulator. When the dry granulator is working, the flakes of the material pressed by the roller extrusion mechanism are pre-crushed, and then enter the primary granulation device through the feed liner for rough crushing, and then the coarse particles enter the secondary granulation device. Perform fine granulation. Through proper selection of screens with different meshes and proper adjustment of the rotating speed of the granulation knife, the customer's requirements for the particle size of the material can be realized. If the customer has a large variety of materials, in order to meet the GMP requirements of drug production safety regulations and prevent cross-contamination, it is necessary to clean and replace the screens in time at the end of each shift of production of different varieties and specifications. However, it is relatively difficult to disassemble the screen mesh in the dry granulator of the prior art, resulting in reduced production efficiency and greater work intensity for operators.

Utility model content

For this reason, the technical problem to be solved by the utility model is that it is difficult to disassemble the screen of the existing dry granulator, and then provide a screen frame structure of the dry granulator that is easy to disassemble, clean and replace.

In order to solve the above technical problems, the screen frame structure of the dry granulator of the present invention includes a screen assembly, the screen assembly includes a screen and a frame for installing the screen; a support assembly, the The support assembly installs the screen assembly on the mounting base and the front end plate arranged in parallel, the support assembly includes at least one support rod detachably connected to the mounting base and the front end plate, and the frame The mounting holes provided on the body to match the support rods.

In the above-mentioned screen frame structure of the dry granulator, the end of the support rod provided with a threaded structure passes through the through holes on the front end plate and the mounting seat, and is tightened by a support rod nut.

In the screen frame structure of the above-mentioned dry granulator, the screen is a U-shaped screen, and the frame body is arranged on the outer wall of the U-shaped screen, and the frame body corresponds to the U-shaped screen. One opening end is provided with a limiting structure, and the other opening end is provided with a connecting structure.

In the above-mentioned screen frame structure of the dry granulator, the limiting structure includes a limiting plate connected to the frame body, and the limiting plate is bent and extended toward the side of the screen, and the screen The open end of the opening protrudes into the gap between the limiting plate and the frame body.

In the screen frame structure of the above-mentioned dry granulator, the connection structure includes the pressing plate and the frame body respectively located on both sides of the other opening end of the screen, and the frame body passing through the pressing plate and the frame Fasteners between bodies.

In the screen frame structure of the above-mentioned dry granulator, the opening end of the screen is arranged obliquely, and the inclination direction is consistent with the direction of the movement track of the upper end point of the granulation roller assembly.

The above-mentioned screen frame structure of the dry granulator further includes an adjustment assembly for adjusting the matching distance between the screen and the granulation roller assembly.

In the screen frame structure of the above-mentioned dry granulator, the adjustment assembly includes an adjustment groove arranged on the frame body, and an eccentric shaft inserted into the adjustment groove and rotatably mounted on the mounting seat. axis.

In the screen frame structure of the above-mentioned dry granulator, two groups of the screen components are arranged side by side between the mounting seat and the front end plate, and the left side baffle plate and the right side plate are arranged on both sides of the upper frame body. The baffle, the left side baffle and the right side baffle extend downwards to the inner side of the opening of the lower screen.

In the above-mentioned screen frame structure of the dry granulator, a feed liner is provided on the upper side of the upper frame body, and a slot for insertion of the screen assembly is opened on the feed liner.

Compared with the prior art, the above-mentioned technical solution of the utility model has the following advantages:

(1) The screen frame structure of the dry granulator of the present invention includes a screen assembly and a support assembly for installing the screen assembly on the parallel and opposite mounting seats and the front end plate. The support assembly includes at least one support rod detachably connected to the mounting seat and the front end plate, and an installation hole provided on the frame to match the support rod. When disassembling the screen assembly, first remove the cover that covers the granulation mechanism, and then remove the front plate or the mounting seat, and then the screen assembly can be disassembled. The above-mentioned screen mesh frame structure is convenient for quick replacement of the screen mesh, and meets the requirements of the GMP safety standard for drug production and the granulation process requirements.

(2) In the screen assembly of the present utility model, the screen is a U-shaped screen, and the frame body is arranged on the outer wall of the U-shaped screen, and the frame body is provided with a limit structure corresponding to an opening end of the U-shaped screen. A connection structure is provided corresponding to the other open end. The connection structure between the screen and the frame body is simple, easy to disassemble and assemble, and the connection is stable, preventing the screen from sliding during operation.

(3) The utility model also includes an adjustment assembly for adjusting the matching distance between the screen and the granulating roller assembly. By properly adjusting the matching distance between the screen and the granulating roller assembly, it is possible to ensure that the sheet material passes through quickly. Sieve to prevent excessive fine powder caused by multiple frictions.

(4) The left side baffle and the right side baffle are arranged on the left and right sides of the upper screen assembly of the utility model, extending to the inner side of the lower screen assembly, so that materials can be smoothly sent into the secondary granulation unit, avoiding Scattered; at the same time, the support column and support block structure are set up, so that the side baffle can be quickly inserted and installed, which is convenient for installation and disassembly.

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be described in further detail below according to specific embodiments of the utility model in conjunction with the accompanying drawings, wherein

Fig. 1 is the partial cross-sectional view of the screen grid structure of the utility model dry granulator;

Fig. 2 is a schematic diagram of the installation structure of the utility model support bar, mounting seat and front end plate;

Fig. 3 is the A direction view of Fig. 2;

Fig. 4 is the structural representation of screen assembly;

Fig. 5 is a partial enlarged view of part B in Fig. 2;

FIG. 6 is a partially enlarged view of part C in FIG. 2 .

The reference signs in the figure are represented as: 1-first-level granulation unit; 2-second-level granulation unit; 10-installation seat; 101-support rod; 101a-support rod bolt; 101b-support rod nut; 102-eccentric shaft ;1021-cavity; 102a-column; 102b-eccentric shaft nut; 103-support column; -Installation hole; 304-Adjustment slot; 40-Whole grain stick assembly; 40a-Upper end point; 41-Left baffle; 42-Right baffle; 411-Support block; Groove; 60-limit plate; 70-press plate; 80-fastener.

Detailed ways

The following embodiments will be used to further illustrate the present invention in conjunction with the accompanying drawings.

As shown in Figure 1, it is the screen net frame structure of the dry granulator of the present utility model, and it comprises, the screen pack assembly 30 that is made up of screen pack 301 and the support body 302 that is used to install screen pack 301 and the screen pack assembly 30 is installed on the support assembly on the mounting seat 10 and the front end plate 20 which are arranged in parallel.

The support assembly includes at least one support rod 101 detachably connected to the mounting base 10 and the front panel 20 , and a mounting hole 303 formed on the frame body 302 to match the support rod 101 .

One of the ends of the mounting base 10 and the front end plate 20 is provided with a power device, and the other end is used to disassemble the screen assembly. When disassembling, first remove the cover body that is located on the granulation mechanism, and then remove the front end plate 20 or the mounting base. 10, the screen assembly can be disassembled, and the screen 301 can be removed from the frame body 302. The above-mentioned screen mesh frame structure is convenient for quick replacement of the screen mesh, and meets the requirements of the GMP safety standard for drug production and the granulation process requirements.

As the detachable connection structure between the support rod 101, the mounting base 10 and the front end plate 20, in this embodiment, as shown in FIG. through holes, and tighten through the strut nut 101b. Preferably, the support rod nut 101b is a cap nut. The other end of the support rod 101 is formed with a threaded hole, which can be detachably connected by the support rod bolt 101 a passing through the mounting base 10 . In this way, the front end plate 20 can be removed by screwing the cap nut (in this embodiment, a power device is arranged on the side of the mounting seat), and the removal is more convenient. In other manners, the above detachable connection structure can also choose a locking structure and the like. Certainly, the support rod 101 may also be one or more than three, and may be a round rod or a polygonal rod.

In this embodiment, the screen assembly 30 adopts the following specific structure: the screen 301 is a U-shaped screen, the frame body 302 is arranged on the outer wall of the U-shaped screen, and the frame body 302 corresponds to One opening end of the U-shaped screen is provided with a limiting structure, and the other opening end is provided with a connecting structure.

Specifically, the limiting structure includes a limiting plate 60 connected to the frame body 302, the limiting plate 303 is bent and extended toward the side of the screen 301, and the opening end of the screen 301 extends into In the gap between the limiting plate 60 and the frame body 302 . The connecting structure includes a pressing plate 70 and the frame body 302 respectively located on two sides of the other opening end of the screen 301 , and a fastener 80 penetrating between the pressing plate and the frame body 302 . The fastener 80 is a fastening bolt, which penetrates from the side of the frame body 302 and is threadedly connected with the pressure plate 70 .

The screen frame structure is set in the two-stage granulation mechanism of the dry granulator, including two granulation units arranged side by side on the mounting seat, namely the first-level granulation unit 1 and the second-level granulation unit 2. . After the material falls into the first-level granulation unit 1 through the feed port located above the first-level granulation unit 1, it is roughly crushed by the first-level granulation unit 1, and then falls into the second-level granulation unit 1 below the first-level granulation unit 1. The stage sizing unit 2 performs fine granulation. Through the two-stage granulation mechanism, the granulation rate of one granulation can be improved, and the work efficiency is also high. In the two-stage sizing mechanism, each sizing unit includes a screen assembly 30 and a sizing roller assembly 40 located inside the sieve assembly 30, and the sizing roller assembly 40 passes through the sieve assembly 30. The motor is driven to rotate, and the large-grained materials falling into the screen assembly 30 are crushed for granulation.

The opening end of the screen 301 is arranged obliquely, and its inclination direction is consistent with the movement track direction of the upper end point 40a of the sizing roller assembly 40 . The angle of inclination is between 25° and 35°. In this embodiment, the opening end of the screen 301 is inclined upwards and to the right, and the grading roller assembly 40 rotates clockwise. That is to say, when the grading roller assembly 40 rotates clockwise, the movement track direction of the upper end point 40a of the grading roller assembly 40 is to the right, and at this time, the opening end of the screen 301 is set upward and tilted to the right. In the same way, another embodiment is also possible, that is, the grading roller assembly 40 rotates counterclockwise, and the direction of the motion trajectory of the upper end point 40a of the grading roller assembly 40 is leftward, and the opening end of the screen cloth 301 is set upwards at this time. and tilt left. Since the grading roller assembly 40 rotates clockwise, driven by the grading knife, most of the materials in the screen 301 will be located at the lower left side of the grading roller assembly 40, so the structure of setting the screen 301 inclined to the right is adopted. , so that the pre-storage space of the material to be granulated and the effective working area of the screen at the lower left of the granulated roller assembly 40 are increased, so that the contact is more sufficient, the granulation is faster, and the granulation efficiency is effectively improved.

The above-mentioned sieve net frame structure further includes an adjustment component, which is used to adjust the matching distance between the sieve net and the granulation roller assembly. As shown in FIG. 1 , the adjustment assembly includes an adjustment slot 304 opened on the frame body 302 , and an eccentric shaft 102 inserted into the adjustment slot 304 and rotatably mounted on the mounting base 10 . As shown in Figure 6, the end of the eccentric shaft 102 close to the mounting base 10 is provided with an axial cavity 1021, a cylinder 102a passes through the mounting base 10 and one end is inserted into the cavity 1021, the eccentric shaft 102 Rotate around the axis of the cylinder 102a. When it is necessary to adjust the matching distance between the screen and the granulation roller assembly, the eccentric shaft 102 is rotated. Since the eccentric shaft 102 is inserted in the adjustment groove 304, as the eccentric shaft 102 rotates, the eccentric shaft 102 withstands the adjustment groove 304. The edge thereby drives the entire screen assembly 30 to move. At the same time, the installation hole 303 is configured as a long hole, and when the screen assembly 30 moves, the support rod 101 can also relatively move in the installation hole 303 . As shown in Figure 5, the end of the eccentric shaft 102 is provided with a threaded structure, and the end of the threaded structure passes through the adjustment groove 304 and the through hole provided on the front end plate 20, and connects with an eccentric shaft nut 102b is tightened. Preferably, the eccentric shaft nut 102b is selected as a cap nut.

Between the mounting base 10 and the front end plate 20, two sets of screen assemblies 30 are arranged side by side up and down, and a left side baffle 41 and a right side baffle 42 are arranged on both sides of the frame body 302 of the upper layer. The baffle 41 and the right side baffle 42 extend downward to the inside of the opening of the lower screen 301 . Therefore, the material can be smoothly sent to the secondary granulation unit to avoid scattering.

In this embodiment, referring to FIG. 1 , a support block 411 is provided on the left side baffle plate 41, a slot is provided on the support block 411, and a support inserted into the slot is provided on the mounting seat 10. Column 103. One end of the support column 103 close to the front end plate 20 is fixed on the front end plate 20 by a support column nut 103b. Preferably, the support column nut 103b is an acorn nut.

A feed liner 50 is provided on the upper side of the frame body 302 on the upper layer, and a slot 51 for inserting the screen assembly 30 is opened on the feed liner 50 . When installing the screen assembly of the first-level granulation unit 1, it can be inserted along the slot 51 to facilitate its positioning. Inserting it in the slot 51 can also limit and support the screen assembly and increase the structure. stability.

The following steps are used to disassemble the screen in the above screen grid structure, see Figure 2 and Figure 4:

① Remove the cover;

② Loosen the support rod nut 101b, eccentric shaft nut 102b and support column nut 103b on the front baffle, and remove the front baffle;

③ Remove the left and right baffles in turn, and the screen assembly 30 can be removed after feeding the liner;

Loosen the fasteners 80 on the frame body 302 and take off the pressing plate 70 to remove the screen.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (10)

1. a screen cloth grid structure for dry granulating machine, is characterized in that: comprise, screen assemblies (30), and described screen assemblies (30) comprises screen cloth (301) and the support body (302) for installing screen cloth (301); Supporting component, described screen assemblies (30) is installed on the parallel mount pad (10) that is oppositely arranged and front end-plate (20) by described supporting component, described supporting component comprises at least one support bar (101) be removably connected on described mount pad (10) and described front end-plate (20), and the installing hole (303) matched with described support bar (101) that described support body (302) is offered.

2. the screen cloth grid structure of dry granulating machine according to claim 1; it is characterized in that: described support bar (101) is provided with the end of helicitic texture through the through hole on described front end-plate (20) and described mount pad (10), and is tightened by support bar nut (101b).

3. the screen cloth grid structure of dry granulating machine according to claim 2; it is characterized in that: described screen cloth (301) is U-shaped screen cloth; described support body (302) fit described U-shaped screen cloth outer wall arrange; an openend of the corresponding described U-shaped screen cloth of described support body (302) arranges position limiting structure, and another openend corresponding is provided with syndeton.

4. the screen cloth grid structure of dry granulating machine according to claim 3; it is characterized in that: described position limiting structure comprises the limiting plate (60) being connected to described support body (302); described limiting plate (303) is extended towards described screen cloth (301) side bending, and the openend of described screen cloth (301) is stretched in the gap between described limiting plate (60) and described support body (302).

5. the screen cloth grid structure of dry granulating machine according to claim 3; it is characterized in that: described syndeton comprises pressing plate (70) and the described support body (302) of another both sides, openend laying respectively at described screen cloth (301), and is arranged in the securing member (80) between described pressing plate and described support body (302).

6. the screen cloth grid structure of dry granulating machine according to claim 3, is characterized in that: the openend of described screen cloth (301) is obliquely installed, and its incline direction is consistent with the movement locus direction of the upper extreme point (40a) of whole grain roll assembly (40).

7. the screen cloth grid structure of dry granulating machine according to claim 6, is characterized in that: also comprise adjusting part, coordinates spacing for what adjust described screen cloth (301) and described whole grain roll assembly (40).

8. the screen cloth grid structure of dry granulating machine according to claim 7; it is characterized in that: described adjusting part comprises the regulating tank (304) be arranged on described support body (302), and to be inserted in described regulating tank (304) and the eccentric shaft (102) be rotatably mounted on described mount pad (10).

9. the screen cloth grid structure of dry granulating machine according to claim 1; it is characterized in that: between described mount pad (10) and described front end-plate (20), be set up in parallel screen assemblies (30) described in two groups up and down; support body (302) both sides on upper strata are provided with left side baffle plate (41) and right-hand apron (42), and described left side baffle plate (41) and described right-hand apron (42) extend downward the opening inner side of the described screen cloth (301) of lower floor.

10. the screen cloth grid structure of dry granulating machine according to claim 9; it is characterized in that: described support body (302) upside on upper strata arranges charging liner plate (50), described charging liner plate (50) offers the slot (51) inserted for described screen assemblies (30).