Screening device for crushed HPMC

Abstract

The utility model provides a screening device for crushed HPMC, which comprises a material conveying structure communicated with feed ports of at least two screening devices, the material conveying structure is communicated with a discharge port of a crusher, the material conveying structure comprises a blanking hopper communicated with the discharge port of the crusher and the feed ports of the screening devices, the lower part of the blanking hopper is provided with a corrugated material guide cylinder, and the lower part of the blanking hopper is provided with a feeding port. The lower portion of the corrugated material guide barrel is provided with a flow dividing barrel communicated with the corrugated material guide barrel, a driving piece is arranged on the outer side of the flow dividing barrel and is a motor, and material conveying blades opposite in spiral direction are arranged on an output shaft of the driving piece and located in the flow dividing barrel. According to the utility model, materials falling from the blanking hopper can be efficiently conveyed and shunted through the conveying blades with opposite spiral directions, so that the materials smoothly enter a plurality of screening devices corresponding to the materials, the screening efficiency of the screening devices is greatly improved, the materials are prevented from blocking the shunting barrel, and the operation is more convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, specifically to a screening device for HPMC after pulverization. Background Technology

[0002] HPMC, hydroxypropyl methylcellulose, is a type of nonionic cellulose mixed ether. It is a semi-synthetic, inactive, viscoelastic polymer commonly used as a lubricant in ophthalmology or as an excipient or excipient in oral medications. Hydroxypropyl methylcellulose is a white or off-white powder.

[0003] HPMC typically requires further pulverization and sieving after grinding to ensure the uniformity and dryness of the raw materials, thus providing a suitable material basis for subsequent reactions.

[0004] Traditional screening devices can only guide materials into the feed process by setting up multiple outlet branch pipes. This method has low feeding efficiency and is prone to blockage of the branch pipes due to excessive discharge speed, which affects the normal feeding of materials and greatly reduces the screening efficiency of the screening device. Utility Model Content

[0005] In view of this, the present invention provides a screening device for HPMC pulverization, which can achieve efficient diversion and conveying of materials through the material conveying structure, avoid material blockage of the diversion cylinder, ensure the normal operation of material conveying, and greatly improve the screening efficiency of the screening device.

[0006] To solve the above-mentioned technical problems, this utility model provides a screening device for HPMC pulverization, including a conveying structure connected to the inlet of at least two screening devices. The conveying structure is connected to the outlet of the pulverizer. The conveying structure includes a hopper connecting the outlet of the pulverizer and the inlet of the screening device. A corrugated guide cylinder is provided at the lower part of the hopper, and a diverter cylinder is provided at the lower part of the corrugated guide cylinder. A drive unit, which is a motor, is provided on the outside of the diverter cylinder. The output shaft of the drive unit and the inside of the diverter cylinder are provided with conveying blades with opposite spiral directions. The conveying blades extend to both ends of the diverter cylinder with the vertical plane containing the axis of the corrugated guide cylinder as the reference. This utility model can achieve efficient conveying and diversion of the material falling from the hopper through the conveying blades with opposite spiral directions, so that it can smoothly enter the interior of multiple corresponding screening devices, greatly improving the screening efficiency of the screening device, avoiding material blockage of the diverter cylinder, and making the operation more convenient and efficient.

[0007] At least two discharge cylinders are provided on the side wall of the diverter cylinder, each connected to the diverter cylinder. The number of discharge cylinders is even and they are divided into two groups, with the two groups of discharge cylinders located on both sides of the corrugated guide cylinder.

[0008] A fixing plate is provided on the outer side wall of the hopper, and a telescopic push rod is provided on the fixing plate. A connecting plate is provided at the output rod end of the telescopic push rod, and the end of the connecting plate is fixed together with the outer side wall of the corrugated guide cylinder.

[0009] The telescopic push rod can be an electric push rod or a hydraulic push rod.

[0010] The corrugated guide cylinder is made of plastic tubing, and the inner wall of the corrugated guide cylinder is smooth.

[0011] The hopper has a structure where the opening at the top is larger than the opening at the bottom.

[0012] A guide hopper is provided at the bottom of the discharge cylinder. The guide hopper has a structure in which the upper opening is smaller than the lower opening. The lower part of the guide hopper is connected to the feed inlet of the screening device through a flexible hose.

[0013] The screening device is an ultrasonic vibrating screen, and the brand of the ultrasonic vibrating screen is: Xinsman Machinery, an ultrasonically driven circular vibrating screen.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0015] 1. This utility model can rotate the output shaft of the starter drive component to synchronously rotate the conveying blades with opposite spiral directions. This allows the material that has been crushed by the crushing mechanism after falling into the hopper to be discharged into the hopper through the discharge port. The material then enters the corrugated guide cylinder and finally falls into the guide cylinder through the lower part of the corrugated guide cylinder. The material is then smoothly discharged into the screening device through the discharge cylinder set at the lower part of the guide cylinder, thereby achieving efficient material diversion and screening, making the operation more convenient and efficient.

[0016] 2. This utility model allows the connecting plate and the corrugated guide cylinder fixedly connected to the connecting plate to extend and retract by activating the extension and retraction of the output rod of the telescopic push rod. This enables convenient and quick adjustment of the amount of temporarily stored material by changing the height of the corrugated guide cylinder. Furthermore, after the material is unloaded, the material inside the corrugated guide cylinder can be shaken off by repeatedly activating the extension and retraction of the output rod of the telescopic push rod, making the operation more convenient.

[0017] 3. This utility model can form a certain slope by using a feeding hopper that is larger at the top and smaller at the bottom, so that the material in the feeding hopper can smoothly slide into the corrugated guide cylinder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the material conveying structure in the screening device after HPMC pulverization according to this utility model;

[0019] Figure 2 This is a side view of the material conveying structure in the screening device for HPMC pulverization in this practical application;

[0020] Figure 3 For practical purposes Figure 2 Sectional view at point AA.

[0021] Explanation of reference numerals in the attached drawings: 100, material conveying structure; 110, hopper; 120, corrugated guide cylinder; 130, diverter cylinder; 140, driving component; 150, conveying blade; 160, discharge cylinder; 170, fixing plate; 180, telescopic push rod; 190, connecting plate; 200, guide hopper. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-3 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1 and Figure 2As shown: This embodiment provides a screening device for HPMC pulverization, including a conveying structure 100 connected to the inlet of at least two screening devices. The outlet end of the conveying structure 100 is detachably connected to the inlet of the screening device via a pipe with a flange, bolts, and nuts. A guide hopper 200 is provided at the lower part of the discharge cylinder 160. The guide hopper 200 has an upper opening smaller than the lower opening. The lower part of the guide hopper 200 is connected to the inlet of the screening device via a flexible hose. This design facilitates the smooth guidance and discharge of materials by the guide hopper 200, making operation more convenient. The conveying structure 100 is connected to the outlet of the pulverizer. The conveying structure 100 includes a discharge hopper 110 connecting the outlet of the pulverizer and the inlet of the screening device. A corrugated guide cylinder 120 is provided at the lower part, and a diversion cylinder 130 connected to the corrugated guide cylinder 120 is provided at the lower part of the corrugated guide cylinder 120. A drive component 140, which is a motor, is provided on the outside of the diversion cylinder 130. The output shaft of the drive component 140 and the conveying blades 150 with opposite spiral directions are provided inside the diversion cylinder 130. The conveying blades 150 extend to both ends of the diversion cylinder 130 with the vertical plane containing the axis of the corrugated guide cylinder 120 as the reference. This utility model can realize the efficient conveying and diversion of materials falling from the hopper 110 through the conveying blades 150 with opposite spiral directions, so that they can smoothly enter the interior of multiple corresponding screening devices, which greatly improves the screening efficiency of the screening device, avoids material blockage in the diversion cylinder 130, and makes the operation more convenient and efficient.

[0024] At least two discharge cylinders 160 are provided on the side wall of the diversion cylinder 130, which are respectively connected to the diversion cylinder 130. The number of discharge cylinders 160 is even and they are divided into two groups. The two groups of discharge cylinders 160 are located on both sides of the corrugated guide cylinder 120. This utility model can realize the feeding operation of multiple screening devices at the same time through multiple discharge cylinders 160, which greatly improves the efficiency of material feeding and screening, and makes the operation more convenient.

[0025] According to another embodiment of the present invention, such as Figure 1 and Figure 3As shown, a fixing plate 170 is provided on the outer wall of the hopper 110, and a telescopic push rod 180 is provided on the fixing plate 170. The telescopic push rod 180 is an electric push rod or a hydraulic push rod. A connecting plate 190 is provided at the end of the output rod of the telescopic push rod 180. The end of the connecting plate 190 is fixed to the outer wall of the corrugated guide cylinder 120. This utility model can extend and retract the connecting plate 190 and the corrugated guide cylinder 120 fixedly connected to the connecting plate 190 by extending and retracting the output rod of the telescopic push rod 180. This allows for convenient and quick adjustment of the amount of temporarily stored material by changing the height of the corrugated guide cylinder 120. Moreover, after the material is discharged, the material in the corrugated guide cylinder 120 can be shaken off by repeatedly extending and retracting the output rod of the telescopic push rod 180. This makes the operation more convenient.

[0026] The corrugated guide cylinder 120 is made of plastic tubing, and the inner wall of the corrugated guide cylinder 120 is smooth. This is to effectively prevent unnecessary adhesion of materials falling through the corrugated guide cylinder 120.

[0027] The hopper 110 has a structure where the upper opening is larger than the lower opening. This utility model can make the hopper 110, which is larger at the top and smaller at the bottom, form a certain slope, so that the material in the hopper 110 can smoothly slide into the corrugated guide cylinder 120.

[0028] The screening device is an ultrasonic vibrating screen, branded as Xinsman Machinery. It is an ultrasonically driven circular vibrating screen, which facilitates efficient screening of materials and avoids the problem of vibration springs being easily damaged due to the intense vibration during screening, which often requires regular maintenance or replacement, as is the case with vibrating screens driven by vibration damping motors. This makes operation more convenient.

[0029] How to use this utility model:

[0030] First, it needs to be clarified that the screening device involved in this utility model is mainly used for screening various pulverized powder and granular materials. This utility model takes the screening of HPMC raw material after pulverization as an example to describe its usage method in detail. When screening HPMC pulverized material is required, the operator first starts the output shaft of the drive component 140 to rotate, and at the same time starts the screening device to work. By starting the output shaft of the drive component 140 to rotate, the conveying blades 150 with opposite spiral directions rotate synchronously, thereby realizing the discharge of the material that has been pulverized by the crushing mechanism after falling through the hopper 110 into the discharge port. The material enters the corrugated guide cylinder 120 through the hopper 110 and then falls into the guide cylinder 120. The material is then diverted and guided into the guide cylinder and discharged smoothly into the screening device through the discharge cylinder 160 set at the bottom of the guide cylinder. This achieves efficient diversion and screening of the material. This utility model can use the conveying blades 150 with opposite spiral directions to achieve efficient conveying and diversion of the material falling from the hopper 110, so that it can smoothly enter the internal parts of multiple corresponding screening devices, which greatly improves the screening efficiency of the screening device, avoids material blockage of the diversion cylinder 130, and makes the operation more convenient and efficient.

[0031] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A screening device for HPMC pulverization, comprising a conveying structure (100) connected to the inlet of at least two screening devices, the conveying structure (100) being connected to the outlet of the pulverizer, characterized in that: The material conveying structure (100) includes a hopper (110) that connects the discharge port of the crusher and the inlet of the screening device. A corrugated guide cylinder (120) is provided at the lower part of the hopper (110). A diverter cylinder (130) is provided at the lower part of the corrugated guide cylinder (120) and communicates with it. A drive member (140) is provided on the outside of the diverter cylinder (130). The output shaft of the drive member (140) and the inside of the diverter cylinder (130) are provided with conveying blades (150) with opposite spiral directions. The conveying blades (150) extend to both ends of the diverter cylinder (130) with the vertical plane where the axis of the corrugated guide cylinder (120) is located as a reference.

2. The screening device for HPMC pulverization as described in claim 1, characterized in that: The side wall of the diversion cylinder (130) is provided with at least two discharge cylinders (160) that are respectively connected to the diversion cylinder (130). The number of discharge cylinders (160) is even and they are divided into two groups. The two groups of discharge cylinders (160) are located on both sides of the corrugated guide cylinder (120).

3. The screening device for HPMC pulverization as described in claim 2, characterized in that: A fixing plate (170) is provided on the outer wall of the hopper (110), and a telescopic push rod (180) is provided on the fixing plate (170). A connecting plate (190) is provided at the end of the output rod of the telescopic push rod (180), and the end of the connecting plate (190) is fixed together with the outer wall of the corrugated guide cylinder (120).

4. The screening device for HPMC pulverization as described in claim 3, characterized in that: The telescopic push rod (180) is an electric push rod or a hydraulic push rod.

5. The screening device for HPMC pulverization as described in claim 4, characterized in that: The corrugated guide cylinder (120) is made of plastic tubing.

6. The screening device for HPMC pulverization as described in claim 5, characterized in that: The hopper (110) has a structure where the upper opening is larger than the lower opening.

7. The screening device for HPMC pulverization as described in claim 6, characterized in that: The lower part of the discharge cylinder (160) is provided with a guide hopper (200), which has an upper opening smaller than the lower opening. The lower part of the guide hopper (200) is connected to the feed inlet of the screening device through a flexible hose.

8. The screening device for HPMC pulverization as described in claim 7, characterized in that: The screening device is an ultrasonic vibrating screen.

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