Extrusion dehydration device for processing hydroxypropyl methyl cellulose

Abstract

The utility model relates to the technical field of hydroxypropyl methyl cellulose, and discloses an extrusion dewatering device for hydroxypropyl methyl cellulose processing, which comprises a water bin and a stock bin which are communicated through a through hole, a filter screen extending into the through hole is arranged in the water bin, a feed port is arranged at the top of one end of the filter screen far away from the stock bin, and the feed port is communicated with the stock bin. A telescopic rod is arranged on the outer side of the water bin, the output end of the telescopic rod extends into the filter screen and is connected with a first extrusion plate attached to the filter screen, a buffer adjusting device is arranged in the material bin, and the output end of the buffer adjusting device extends into the filter screen and is connected with a second extrusion plate attached to the filter screen; a material blocking cylinder surrounding the filter screen is arranged in the stock bin. Compared with the prior art, the hydroxypropyl methyl cellulose dewatering device has the advantages that the dewatering effect of hydroxypropyl methyl cellulose can be controlled, and the dewatered hydroxypropyl methyl cellulose is small particles.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydroxypropyl methyl cellulose processing technical field, specifically point to a kind of extrusion dewatering device for hydroxypropyl methyl cellulose processing. BACKGROUND

[0002] Hydroxypropyl methyl cellulose, also known as hydroxypropyl methyl cellulose, is a kind of non-ionic cellulose mixed ether. It is a semi-synthetic, inactive, viscoelastic polymer, commonly used as a lubricant in ophthalmology, or as an auxiliary material or excipient in oral drugs.

[0003] Hydroxypropyl methyl cellulose needs to be dehydrated after production, and the existing technology uses a spiral extrusion dewatering machine for dehydration. The spiral extrusion dewatering machine cannot control the dehydration effect of hydroxypropyl methyl cellulose. In order to achieve the desired drying effect, multiple dehydration operations may be required to achieve the desired drying effect, resulting in low dehydration efficiency. The dehydrated hydroxypropyl methyl cellulose sticks together and needs to be crushed, which is more troublesome to use and needs to be improved. SUMMARY

[0004] (I) Technical problem to be solved

[0005] The technical problem to be solved by the utility model is to overcome the above difficulties and provide an extrusion dewatering device for hydroxypropyl methyl cellulose processing, which can control the dehydration effect of hydroxypropyl methyl cellulose. The dehydrated hydroxypropyl methyl cellulose is in the form of small particles.

[0006] (II) Technical scheme

[0007] To solve the above technical problems, the utility model provides a technical scheme: an extrusion dewatering device for hydroxypropyl methyl cellulose processing, comprising a water tank and a material tank connected by a through hole;

[0008] The water tank is provided with a filter screen extending into the through hole, the end of the filter screen away from the material tank is provided with an inlet at the top, the outer side of the water tank is provided with a telescopic rod, the output end of the telescopic rod extends into the filter screen and is connected with a first extrusion plate arranged in close contact with the filter screen;

[0009] The material tank is provided with a buffer adjusting device, the output end of the buffer adjusting device extends into the filter screen and is connected with a second extrusion plate arranged in close contact with the filter screen, and the material tank is provided with a material blocking cylinder arranged around the filter screen.

[0010] As an improvement, the material blocking cylinder is provided with a rotating gear, the rotating gear is provided with a scraper rod arranged in close contact with the inner wall of the material blocking cylinder, the outer side of the material blocking cylinder is provided with a motor, and the output end of the motor is provided with a driving gear engaged with the rotating gear.

[0011] As improvement, the feeding port is provided with a feeding cylinder.

[0012] As improvement, the bottom of the water tank is provided with a drain pipe, and the bottom of the material tank is provided with a discharging port.

[0013] As improvement, the buffer adjusting device comprises a screw cylinder fixedly connected with the side wall of the material tank, a square rod movably arranged in the screw cylinder, one end of the square rod close to the water tank is fixedly connected with the second extrusion plate, a threaded cylinder is threadedly connected to the outer side of the screw cylinder, and a buffer spring is fixedly arranged around the square rod on the second extrusion plate and abuts against the threaded cylinder.

[0014] As improvement, a protection cylinder is fixedly arranged around the spring on the second extrusion plate.

[0015] (Three), beneficial effects

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1. The first extrusion plate and the second extrusion plate arranged in the filter screen can cooperate to perform extrusion dehydration operation on hydroxypropyl methyl cellulose.

[0018] 2. The screw cylinder, the square rod, the buffer spring and the threaded cylinder on the buffer adjusting device can cooperate to adjust according to the moisture content of the hydroxypropyl methyl cellulose and the required drying condition, so that the device can extrude the hydroxypropyl methyl cellulose meeting the requirements of people at one time.

[0019] 3. The material blocking cylinder can block the splashed hydroxypropyl methyl cellulose, and the motor, the rotating gear and the scraping rod can cooperate to scrape off the hydroxypropyl methyl cellulose adhered to the inner side of the material blocking cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the structure diagram of the utility model Figure One .

[0021] Figure 2 is the structure diagram of the utility model Figure Two .

[0022] Figure 3 is the structure diagram of the utility model in the state of looking down.

[0023] Figure 4 is the structure diagram of the utility model Figure 3 in the state of cutting along A-A.

[0024] As shown in the figure: 1, through hole; 2, water sump; 3, stock bin; 4, filter screen; 5, feed inlet; 6, telescopic rod; 7, first extrusion plate; 8, buffer adjusting device; 9, second extrusion plate; 10, material blocking cylinder; 12, rotating gear; 13, scraping rod; 14, motor; 15, driving gear; 16, feeding cylinder; 17, drain pipe; 18, discharge port; 19, screw cylinder; 20, square rod; 21, threaded cylinder; 22, buffer spring; 23, protective cylinder. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. EMBODIMENT

[0026] In combination with the drawings Figure 1 A kind of extrusion dewatering device for hydroxypropyl methyl cellulose processing, including water sump 2 and stock bin 3 by through hole 1 communication, water sump 2 is used to store the water extruded, stock bin 3 is used to store the hydroxypropyl methyl cellulose after extrusion dewatering, the bottom of the water sump 2 is equipped with drain pipe 17, the bottom of stock bin 3 is equipped with discharge port 18;

[0027] The filter screen 4 extending into the through hole 1 is provided in the water sump 2, the top of the end of the filter screen 4 away from the stock bin 3 is equipped with feed inlet 5, the feed inlet 5 is equipped with feeding cylinder 16, the outer side of the water sump 2 is equipped with telescopic rod 6, the output end of the telescopic rod 6 extends into the filter screen 4 and is connected to the first extrusion plate 7 arranged in close contact with the filter screen 4.

[0028] The buffer adjusting device 8 is provided in the stock bin 3, the output end of the buffer adjusting device 8 extends into the filter screen 4 and is connected to the second extrusion plate 9 arranged in close contact with the filter screen 4, and the stock bin 3 is provided with the material blocking cylinder 10 arranged around the filter screen 4.

[0029] The hydroxypropyl methyl cellulose to be dewatered is added to the filter screen 4 through the feed inlet 5, the telescopic rod 6 is opened, the telescopic rod 6 drives the first extrusion plate 7 to move in the filter screen 4, the first extrusion plate 7 and the second extrusion plate 9 cooperate to extrude and dewater the hydroxypropyl methyl cellulose, the telescopic rod 6 continues to elongate, the buffer adjusting device 8 retracts the second extrusion plate 9 to disengage from the filter screen, the extruded hydroxypropyl methyl cellulose is sprayed out of the first extrusion plate 7 and the second extrusion plate 9, adheres to the material blocking cylinder 10, or falls into the stock bin 3. EMBODIMENT

[0030] The material blocking cylinder 10 is provided with a rotating gear 12, the rotating gear 12 is provided with a scraping rod 13 which is attached to the inner wall of the material blocking cylinder 10, the outer side of the material blocking cylinder 10 is provided with a motor 14, the output end of the motor 14 is provided with a driving gear 15 which is engaged with the rotating gear 12.

[0031] The motor 14 drives the rotating gear 12 to rotate, the rotating gear 12 drives the scraping rod 13 to rotate, and the hydroxypropyl methyl cellulose adhered to the material blocking cylinder 10 is scraped off and falls into the bin 3. Embodiment

[0032] The buffer adjusting device 8 comprises a screw cylinder 19 which is fixedly connected to the side wall of the bin 3, a square rod 20 which is movably arranged in the screw cylinder 19, the second extrusion plate 9 which is fixedly connected to one end of the square rod 20 close to the bin 2, a threaded cylinder 21 which is threadedly connected to the outer side of the screw cylinder 19, and a buffer spring 22 which is fixedly arranged around the square rod 20 and abuts against the threaded cylinder 21.

[0033] The threaded cylinder 21 is rotated to adjust the position of the threaded cylinder 21 on the screw cylinder 19, and then the position of the second extrusion plate 9 in the filter screen 4 is adjusted, so that the device is adapted to hydroxypropyl methyl cellulose with different water contents, and the water content of the extruded hydroxypropyl methyl cellulose meets the needs of people.

[0034] The second extrusion plate 9 is fixedly provided with a protection cylinder 23 which is arranged around the buffer spring 22, and the protection cylinder 23 can prevent the hydroxypropyl methyl cellulose from adhering to the buffer spring 22.

[0035] The telescopic rod 6, the motor 14 and the matching power supply and controller mentioned in the utility model can be provided by the manufacturer, and in addition, the circuit, electronic components and modules involved in the utility model are all prior art, and a person skilled in the art can completely realize them without further description.

[0036] All the features described in the specification, the attached claims and the drawings, whether alone or in any combination, are important features of the utility model.

[0037] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and a person skilled in the art can make changes, modifications, replacements, modifications, delete part of the features, add features or recombine features to form technical solutions within the scope of the utility model without departing from the principles and purposes of the utility model, and any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the innovative principles of the utility model still belong to the scope of the technical solutions of the utility model.

Claims

1. An extrusion dehydration apparatus for processing hydroxypropyl methylcellulose, characterized in that: This includes water tanks and material silos connected by through-holes; The water tank is equipped with a filter screen extending into the through hole. The top of the filter screen away from the hopper is equipped with a feed inlet. The outside of the water tank is equipped with a telescopic rod. The output end of the telescopic rod extends into the filter screen and is connected to a first extrusion plate that fits into the filter screen. The hopper is equipped with a buffer adjustment device. The output end of the buffer adjustment device extends into the filter screen and is connected to a second extrusion plate that fits into the filter screen. The hopper is also equipped with a baffle cylinder that surrounds the filter screen.

2. The extrusion dehydration apparatus for processing hydroxypropyl methylcellulose according to claim 1, characterized in that: The material-blocking cylinder is equipped with a rotating gear, and the rotating gear is equipped with a scraper that fits against the inner wall of the material-blocking cylinder. A motor is provided on the outer side of the material-blocking cylinder, and the output end of the motor is equipped with a drive gear that meshes with the rotating gear.

3. The extrusion dehydration apparatus for processing hydroxypropyl methylcellulose according to claim 1, characterized in that: The feed inlet is equipped with a feed cylinder.

4. The extrusion dehydration apparatus for processing hydroxypropyl methylcellulose according to claim 1, characterized in that: The bottom of the water tank is equipped with a drain pipe, and the bottom of the material tank is equipped with a discharge port.

5. The extrusion dehydration apparatus for processing hydroxypropyl methylcellulose according to claim 1, characterized in that: The buffer adjustment device includes a screw cylinder fixedly connected to the side wall of the silo, a square rod movably disposed inside the screw cylinder, one end of the square rod near the water tank being fixedly connected to a second extrusion plate, a threaded cylinder being threadedly connected to the outer side of the screw cylinder, and a buffer spring being fixedly disposed on the second extrusion plate, which surrounds the square rod and abuts against the threaded cylinder.

6. The extrusion dehydration apparatus for processing hydroxypropyl methylcellulose according to claim 2, characterized in that: The second extrusion plate is fixed with a protective cylinder arranged around the spring.

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