High speed tablet press back powder utilization device

Abstract

High-speed tablet machine back powder recycling device relates to recycling device technical field, including tablet machine main body, the side wall of tablet machine main body is equipped with auxiliary dust removal port, auxiliary dust removal port is connected with the recycling tank of vibration setting through back powder pipeline, the inlet of recycling tank is equipped with the strong magnetic scrap removal component connected with back powder pipeline, recycling tank is equipped with screen, the side wall of recycling tank is equipped with waste outlet that communicates the area above screen.The utility model discloses solved the tablet running process in traditional technology, part of granule especially fine powder type granule is easy to have granule escape in the edge of feeder scraper and the middle die position, because the dust removal system of tablet machine does not discriminate and remove all materials on the big disc of tablet machine and the material of lower impact accumulation, although effectively control the dust amount in the closed space of tablet machine, but make material loss increase, reduce the actual output problem.

Description

Technical Field

[0001] This utility model relates to the field of recycling equipment technology, specifically to a powder recycling device for high-speed tablet presses. Background Technology

[0002] High-speed tablet presses are widely used in the pharmaceutical industry. While greatly increasing production capacity, they also cause fluctuations in yield during tableting due to the different particle properties of different products. This is mainly manifested in the following ways: for high-density tablets and large particle products, the yield can be stabilized at over 98%, but for products with mostly small tablets and fine powder, the yield can only be maintained at around 90%.

[0003] A prior art patent with publication number CN209454235U discloses a solution including a tablet press body, a feeding device, and a collecting device. The feeding device includes a hopper, with a static pressure weighing sensor and a solenoid valve at the hopper outlet. The collecting device includes a powder collecting device and a tablet collecting device. The powder collecting device includes a powder suction nozzle, a powder suction branch pipe, a powder suction pipe, a fan, and a powder collection box connected in sequence. Under the action of the fan, the powder passes through the powder suction nozzle, the powder suction branch pipe, and the powder suction pipe in sequence before entering the powder collection box for recycling. The tablet collecting device includes a discharge trough and a tablet collecting box. The pressed tablets enter the discharge trough and then flow into the tablet collecting box. Utilizing a fan to recover and reuse dust effectively avoids the accumulation of large amounts of powder around the turntable, reducing damage to the pressing mechanism. Furthermore, the collected powder can be conveyed to the hopper for reuse via a powder conveying device, saving production costs.

[0004] As existing devices are used, the shortcomings of this technology have gradually become apparent, mainly in the following aspects: During tableting, some particles, especially fine powder particles, are prone to escape from the edge of the feeder scraper and the middle die. Because the dust removal system of the tablet press indiscriminately removes all the material on the large platen of the tablet press and the material accumulated in the lower punch, although it effectively controls the amount of dust in the confined space of the tablet press, it increases material loss and reduces actual output.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model solves the problem that in the traditional technology, during the tableting process, some particles, especially fine powder particles, are prone to escape from the edge of the feeder scraper and the middle die position. Although the dust removal system of the tableting machine indiscriminately removes all the material on the large platen of the tableting machine and the material accumulated in the lower punch, the amount of dust in the confined space of the tableting machine is effectively controlled, but this increases material loss and reduces the actual output.

[0007] To solve the above problems, this utility model provides the following technical solution: A high-speed tablet press powder recycling device includes a tablet press body. An auxiliary dust removal port is provided on the side wall of the tablet press body. The auxiliary dust removal port is connected to a vibrating recovery tank via a powder recycling pipe. The inlet of the recovery tank is equipped with a strong magnetic chip removal component connected to the powder recycling pipe. The recycling tank is equipped with a screen, and a waste outlet is provided on the side wall of the recycling tank, which connects to the area above the screen.

[0008] As an optimized solution, the waste outlet is connected to the main dust removal pipeline via a waste discharge pipe.

[0009] As an optimized solution, the bottom of the recycling tank is supported on a vibrator.

[0010] As an optimized solution, a butterfly valve is installed on the waste discharge pipe.

[0011] As an optimized solution, the main dust removal port of the tablet press body is connected to the main dust removal pipe through a dust removal pipe.

[0012] As an optimized solution, the screen is tilted, and the lower edge of the waste outlet is level with the upper edge of the screen.

[0013] As an optimized solution, the strong magnetic chip removal assembly includes a housing fixed to the feed inlet of the recycling tank. Several layers of horizontally arranged strong magnetic bars are arranged side by side from top to bottom inside the housing. Several strong magnetic bars are arranged side by side in each layer, and a material dropping area is formed through the area between adjacent strong magnetic bars.

[0014] As an optimized solution, the strong magnetic rods between adjacent layers are arranged in an alternating manner.

[0015] As an optimized solution, several of the strong magnetic rods are collectively fitted with a horizontally sliding pusher plate.

[0016] As an optimized solution, a first square tube and a second square tube are fixedly connected to the opposite side walls of the shell. An end plate is fixedly connected to the outer port of the first square tube. One end of several strong magnetic rods is fixedly connected to the end plate. A discharge plate is detachably connected to the outer port of the second square tube. The discharge plate has a support hole for each strong magnetic rod. The other end of several strong magnetic rods is supported in the support hole.

[0017] As an optimized solution, the pusher plate is located inside the first square cylinder when not in use.

[0018] As an optimized solution, a telescopic cylinder is horizontally fixed to the outer wall of the end plate near the center, and the telescopic end of the telescopic cylinder is fixed to the pusher plate.

[0019] As an optimized solution, the lower end of the recycling tank is provided with a powder discharge port that tapers downwards.

[0020] As an optimized solution, the unloading plate is fixed to the outer port of the second square cylinder by bolts.

[0021] Compared with the prior art, the beneficial effects of this utility model are: An auxiliary dust removal port is newly opened on the side wall of the tablet press body. During the tablet pressing process, the material escaping from the edge of the feeder scraper and the middle mold is sucked away through the auxiliary dust removal port and enters the recovery tank through the return powder pipe. When entering the recovery tank, it first passes through the strong magnetic chip removal component to remove potential metal chips. The remaining particles fall onto the screen. After the action of the vibrator, the qualified particles are accelerated to fall through the screen into the bottom of the recovery tank. After collection and mixing, they are tableted again. The particles that do not pass are discharged through the waste outlet at the edge of the screen through the waste discharge pipe. The waste discharge pipe is connected to the main dust removal pipe through a butterfly valve. The negative pressure suction of the waste discharge pipe can be adjusted by adjusting the opening of the butterfly valve. The staggered arrangement of several layers of strong magnetic rods increases the contact area with the falling powder, thereby improving the separation efficiency of internal iron filings. By setting up a pusher plate, when it is necessary to clean the debris adsorbed by the strong magnetic rod, the telescopic cylinder drives the pusher plate to move. The scraping hole of the pusher plate matches the outer diameter of the strong magnetic rod to scrape the iron filings. By opening the unloading plate, it is easy to clean the iron filings adsorbed on the strong magnetic rod. The modification does not affect the original dust removal effect. Qualified particles overflowing from the feeder and intermediate mold can be recycled and reused. The particles are then subjected to strong magnetic adsorption and sieving to ensure that there are no foreign objects. The recycled particles are mixed and re-participated in tableting, which greatly improves the product yield and reduces the amount of waste. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the recycling tank of this utility model; Figure 3This is a schematic diagram of the distribution structure of the strong magnetic rod of this utility model.

[0024] In the diagram: 1-Tablet press body; 2-Auxiliary dust removal port; 3-Main dust removal port; 4-Powder return pipe; 5-Dust removal pipe; 6-Main dust removal pipe; 7-Strong magnetic chip removal assembly; 8-Screen; 9-Vibrator; 10-Recovery tank; 11-Waste outlet; 12-Waste discharge pipe; 13-Butterfly valve; 14-Shell; 15-First square cylinder; 16-Second square cylinder; 17-Discharge plate; 18-End plate; 19-Strong magnetic rod; 20-Push plate; 21-Telescopic cylinder; 22-Powder outlet; 23-Feed cylinder. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0026] like Figures 1 to 3 As shown, the high-speed tablet press powder recycling device includes a tablet press body 1. An auxiliary dust removal port 2 is provided on the side wall of the tablet press body 1. The auxiliary dust removal port 2 is connected to a vibrating recycling tank 10 through a powder recycling pipe 4. The inlet of the recycling tank 10 is equipped with a strong magnetic chip removal component 7 connected to the powder recycling pipe 4. The recycling tank 10 is equipped with a screen 8, and a waste outlet 11 is provided on the side wall of the recycling tank 10, which connects to the area above the screen 8.

[0027] The auxiliary dust removal port 2 is mainly used for dust removal and material recovery in two key areas: the edge of the feeder scraper and the middle mold position.

[0028] Waste outlet 11 is connected to main dust removal pipe 6 via waste discharge pipe 12.

[0029] The bottom of the recycling tank 10 is fixedly supported on the vibrator 9 by a support leg.

[0030] A butterfly valve 13 is installed on the waste discharge pipe 12.

[0031] The main dust removal port 3 of the tablet press body 1 is connected to the main dust removal pipe 6 through the dust removal pipe 5.

[0032] The screen 8 is set at an angle, and the lower edge of the waste outlet 11 is level with the upper edge of the screen 8. The vibration of the vibrator 9 facilitates the discharge of impurities from the upper surface of the screen 8.

[0033] The strong magnetic chip removal assembly 7 includes a housing 14 fixed to the feed inlet of the recycling tank 10. Several layers of horizontally arranged strong magnetic rods 19 are arranged in parallel from top to bottom inside the housing 14. Several strong magnetic rods 19 are arranged in parallel in each layer, and a material dropping area is formed through the area between adjacent strong magnetic rods 19.

[0034] The strong magnetic rods 19 are arranged alternately between adjacent layers.

[0035] Several strong magnetic rods 19 are fitted together with a horizontally sliding pusher plate 20.

[0036] A first square cylinder 15 and a second square cylinder 16 are fixedly connected to opposite side walls of the housing 14. An end plate 18 is fixedly connected to the outer port of the first square cylinder 15. One end of several strong magnetic rods 19 is fixedly connected to the end plate 18. A discharge plate 17 is detachably connected to the outer port of the second square cylinder 16. The discharge plate 17 has a support hole for each strong magnetic rod 19. The other ends of several strong magnetic rods 19 are supported in the support hole. The support hole matches the outer diameter of the strong magnetic rod 19. A sealing ring can also be set in the support hole.

[0037] When not in use, the pusher plate 20 is located inside the first square cylinder 15.

[0038] A telescopic cylinder 21 is horizontally fixed to the outer wall of the end plate 18 near the center, and the telescopic end of the telescopic cylinder 21 is fixed to the pusher plate 20.

[0039] The lower end of the recycling tank 10 is provided with a powder discharge port 22 that tapers downwards.

[0040] The unloading plate 17 is fixed to the outer port of the second square cylinder 16 by bolts.

[0041] The upper end of the housing 14 is fixedly connected to a feed cylinder 23 that communicates with its inner cavity.

[0042] The feed cylinder 23, powder outlet 22, and waste outlet 11 are all connected to corrugated hoses to reduce the impact of the vibrator 9 on the pipe connections.

[0043] The structures of the tablet press body 1 and the oscillator 9 are not innovative features of this solution and are well-known in the field, so they will not be elaborated on here.

[0044] The working principle of this device is as follows: An auxiliary dust removal port 2 is newly opened on the side wall of the tablet press body 1. During the tablet pressing process, the material escaping from the edge of the feeder scraper plate and the middle mold is sucked away through the auxiliary dust removal port 2 and enters the recovery tank 10 through the return powder pipe 4. When entering the recovery tank 10, it first passes through the strong magnetic chip removal component 7 to remove potential metal chips. The remaining particles fall onto the screen 8. After the action of the vibrator 9, the qualified particles are accelerated to pass through the screen 8 and fall into the bottom of the recovery tank 10. After collection and mixing, the particles are tableted again. The particles that do not pass are discharged through the waste outlet 11 at the edge of the screen 8 and the waste discharge pipe 12. The waste discharge pipe 12 is connected to the main dust removal pipe 6 through the butterfly valve 13. The negative pressure suction of the waste discharge pipe 12 can be adjusted by adjusting the opening of the butterfly valve 13. The staggered arrangement of several layers of strong magnetic rods 19 can increase the contact area with the falling powder and improve the separation efficiency of internal iron filings. By setting the pusher plate 20, when it is necessary to clean the debris adsorbed by the strong magnetic rod 19, the telescopic cylinder 21 drives the pusher plate 20 to move. The scraping hole of the pusher plate 20 matches the outer diameter of the strong magnetic rod 19 to scrape the iron filings. By opening the unloading plate 17, it is convenient to clean the iron filings adsorbed on the strong magnetic rod 19. The modification does not affect the original dust removal effect. Qualified particles overflowing from the feeder and intermediate mold can be recycled and reused. The particles are then subjected to strong magnetic adsorption and sieving to ensure that there are no foreign objects. The recycled particles are mixed and re-participated in tableting, which greatly improves the product yield and reduces the amount of waste.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit its scope. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A powder recycling device for a high-speed tablet press, characterized in that: The tablet press body (1) is provided with an auxiliary dust removal port (2) on the side wall of the tablet press body (1). The auxiliary dust removal port (2) is connected to a vibrating recovery tank (10) through a powder return pipe (4). The feed inlet of the recovery tank (10) is provided with a strong magnetic chip removal component (7) connected to the powder return pipe (4). The recycling tank (10) is equipped with a screen (8), and a waste outlet (11) is provided on the side wall of the recycling tank (10) to connect the area above the screen (8).

2. The high-speed tablet press powder recycling device according to claim 1, characterized in that: The waste outlet (11) is connected to the main dust removal pipe (6) via the waste discharge pipe (12).

3. The high-speed tablet press powder recycling device according to claim 1, characterized in that: The bottom of the recycling tank (10) is supported on the oscillator (9).

4. The high-speed tablet press powder recycling device according to claim 2, characterized in that: A butterfly valve (13) is provided on the waste discharge pipe (12).

5. The high-speed tablet press powder recycling device according to claim 2, characterized in that: The main dust removal port (3) of the tablet press body (1) is connected to the main dust removal pipe (6) through the dust removal pipe (5).

6. The high-speed tablet press powder recycling device according to claim 1, characterized in that: The screen (8) is inclined, and the lower edge of the waste outlet (11) is level with the upper edge of the screen (8).

7. The high-speed tablet press powder recycling device according to claim 1, characterized in that: The strong magnetic chip removal assembly (7) includes a housing (14) fixed to the feed inlet of the recycling tank (10). Several layers of horizontally arranged strong magnetic rods (19) are arranged in parallel from top to bottom inside the housing (14). Several strong magnetic rods (19) are arranged in parallel in each layer, and a material dropping area is formed through the area between adjacent strong magnetic rods (19). The strong magnetic rods (19) between adjacent layers are arranged in an alternating manner.

8. The high-speed tablet press powder recycling device according to claim 7, characterized in that: Several of the aforementioned strong magnetic rods (19) are fitted with a horizontally sliding pusher plate (20).

9. The high-speed tablet press powder recycling device according to claim 8, characterized in that: A first square tube (15) and a second square tube (16) are fixedly connected to the opposite side walls of the housing (14). An end plate (18) is fixedly connected to the outer port of the first square tube (15). One end of several strong magnetic rods (19) is fixedly connected to the end plate (18). A discharge plate (17) is detachably connected to the outer port of the second square tube (16). The discharge plate (17) has a support hole for each strong magnetic rod (19). The other end of several strong magnetic rods (19) is supported in the support hole.

10. The high-speed tablet press powder recycling device according to claim 9, characterized in that: A telescopic cylinder (21) is horizontally fixed to the outer wall of the end plate (18) near the center, and the telescopic end of the telescopic cylinder (21) is fixed to the pusher plate (20).

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