CN218948493U - Tabletting device - Google Patents

Abstract

The utility model provides a tabletting device for compacting materials into tablets, which comprises: a frame; the two press rolls are hinged with the frame respectively, extend along the first direction and have opposite rotation directions, and a certain gap is formed between the circumferential surfaces of the two press rolls; the two liquid coating rollers are hinged with the frame respectively and extend along the first direction, and the circumferential surfaces of the two liquid coating rollers are respectively attached to the circumferential surfaces of the two pressing rollers; the liquid supply mechanism is arranged on the frame and used for supplying cleaning liquid to the liquid coating roller; the two cleaning scrapers are respectively arranged on one sides of the two liquid coating rollers along the rotation direction of the two pressing rollers and are respectively tangent to the circumferential surfaces of the two pressing rollers, and the cleaning scrapers are used for removing the adhesive on the circumferential surfaces of the pressing rollers. The tabletting device provided by the utility model can remove the adhesive on the surface of the compression roller in the production process, and avoid the clamping of the compression roller.

Description

Tabletting device

Technical Field

The utility model relates to the technical field of tobacco manufacturing, in particular to a tabletting device.

Background

In the industrial production of cigarettes, stem sticks contained in tobacco shreds not only have quality defects such as ' popcorn ', ' flameout ', ' fire drop ', puncture of cigarettes ', and the like, but also have the problems of ' running strips ', ' blocking ', abrasion of parts of a cigarette machine, and the like in the production process of cigarettes. Therefore, corresponding measures are adopted as much as possible in the cigarette production process to remove the stems in the tobacco shreds so as to ensure the purity of the tobacco shreds. The stem is often from the vein of tobacco leaf, and its chemical component is more close with the cut tobacco, through making filiform cut stem retrieval and utilization after tabletting, shredding the stem, both can improve the composition structure of pipe tobacco, still be favorable to reducing burnt harm, because contain more pectin composition in the stem, pectin and garrulous end are glued on the compression roller surface in continuous preforming in-process, cause the compression roller card to die easily, consequently can't guarantee the quality of preforming and the steady operation of preforming device.

At present, the mode of scraping the tablet pressing device mainly adopts a scraper, and the scraper is arranged to scrape the adhesive on the surface of the press roller when the press roller rotates, but when the adhesive on the surface of the press roller is too much, the cleaning efficiency of the scraper is reduced, a large amount of adhesive can not be removed, so that the press roller is blocked, and the production is influenced.

Disclosure of Invention

The utility model aims to solve the technical problems that the existing tabletting device only uses a scraper to clean the surface of a compression roller, so that a large amount of adhesive cannot be cleaned, the compression roller is blocked, and the production is affected. The utility model provides a tabletting device which can effectively remove the adhesive on the surface of a compression roller in the production process, thereby avoiding the clamping of the compression roller.

An embodiment of the present utility model provides a tablet press apparatus for pressing a material into a tablet shape, including:

a frame;

the two press rolls are hinged with the frame respectively, extend along the first direction and have opposite rotation directions, and a certain gap is formed between the circumferential surfaces of the two press rolls;

the two liquid coating rollers are hinged with the frame respectively, extend along the first direction, and are respectively attached to the circumferential surfaces of the two pressing rollers;

the liquid supply mechanism is arranged on the frame and is used for supplying cleaning liquid for the liquid coating roller;

the two cleaning scrapers are respectively arranged on one sides of the two liquid coating rollers along the rotation direction of the two pressing rollers and are respectively tangent to the circumferential surfaces of the two pressing rollers, and the cleaning scrapers are used for removing the adhesive on the circumferential surfaces of the pressing rollers.

According to another specific embodiment of the utility model, a feeding hopper is further arranged on the frame, a feeding port is arranged at the upper end of the feeding hopper, a discharging port is arranged at the lower end of the feeding hopper, the discharging port is positioned above a gap between the two compression rollers, and the feeding hopper is used for conveying materials into the gap.

According to another embodiment of the utility model, the liquid supply mechanism comprises two liquid storage tanks, the two liquid storage tanks are respectively positioned below the two liquid coating rollers, the liquid storage tanks are used for containing cleaning liquid, liquid supplementing ports are formed in the liquid storage tanks, at least one water absorption felt is arranged in each liquid storage tank, at least part of the water absorption felt is soaked in the cleaning liquid, and the upper ends of the water absorption felts are in contact with the liquid coating rollers.

According to another specific embodiment of the utility model, the fluid supplementing port is provided with a ball float valve, and the ball float valve is used for controlling the opening and closing of the fluid supplementing port.

According to another specific embodiment of the utility model, a first clamping plate is arranged on one side of the water-absorbing felt, a second clamping plate is arranged on the other side of the water-absorbing felt, the first clamping plate is parallel to the second clamping plate, and the first clamping plate is connected with the second clamping plate through bolts.

According to another specific embodiment of the utility model, the first clamping plate is connected with a swing arm, the swing arm is hinged with the liquid storage tank, a spring is further arranged in the liquid storage tank, one end of the spring is fixed at the bottom of the liquid storage tank, and the other end of the spring is in contact with the swing arm.

According to another specific embodiment of the utility model, the liquid storage tank is also provided with a drain outlet, and the drain outlet is provided with a valve for controlling the opening and closing of the drain outlet.

According to another specific embodiment of the utility model, the liquid supply mechanism further comprises two spraying devices, wherein the two spraying devices are arranged on the frame, a plurality of spraying holes are formed in the spraying devices, and the two spraying devices are respectively used for spraying water and steam to the circumferential surfaces of the two pressing rollers.

According to another embodiment of the utility model, the diameter of the orifice is 0.2-1mm.

According to another embodiment of the utility model, two sides below the gap are respectively provided with a stem stripping scraper, the two stem stripping scrapers are respectively tangent to the circumferential surfaces of the two press rolls, and the stem stripping scrapers are used for stripping the materials pressed into sheets by the two press rolls from the press rolls.

According to another embodiment of the present utility model, further comprising:

the eccentric bearing seat is hinged with the frame, can rotate relative to the frame around a rotation axis, is provided with a mounting hole, the axis of the mounting hole is spaced a certain distance from the rotation axis, the end face of the eccentric bearing seat is provided with a plurality of strip-shaped holes, the strip-shaped holes extend along the circumferential direction of the mounting hole, the strip-shaped holes are uniformly distributed along the circumferential direction of the mounting hole, the circumferential surface of the eccentric bearing seat is provided with at least one notch, and the notch penetrates through the two end faces of the eccentric bearing seat;

the bearing is arranged in the mounting hole, and the end part of the compression roller is inserted into the bearing;

the screw can penetrate through the strip-shaped hole and be in threaded connection with the machine frame, so that the eccentric bearing seat is fixed on the machine frame.

According to another embodiment of the utility model, the press roller is connected to a servo motor for controlling the rotational speed of the press roller.

According to another embodiment of the utility model, the cleaning liquid is water.

Compared with the prior art, the utility model has the following beneficial effects:

according to the embodiment, the coating liquid roller is arranged, the cleaning liquid can be coated on the circumferential surface of the pressing roller by using the coating liquid roller, the cleaning liquid can infiltrate the bonding layer on the surface of the pressing roller, so that the bonding layer is loosened, the cleaning scraper is convenient to clean the bonding layer on the surface of the pressing roller, the pressing roller can be effectively cleaned, and the problem that the pressing roller is blocked to cause the stop of the tabletting device is solved.

Drawings

FIG. 1 shows a cross-sectional view of a tabletting device provided by an embodiment of the present utility model;

FIG. 2 shows an enlarged partial view of portion A of FIG. 1;

FIG. 3 shows an enlarged partial view of portion B of FIG. 1;

FIG. 4 shows a C-C cross-sectional view of the press roll of FIG. 1;

FIG. 5 shows a front view of an eccentric bearing housing provided by an embodiment of the present utility model;

fig. 6 shows a cross-sectional view of an eccentric bearing housing provided by an embodiment of the present utility model.

Reference numerals:

1. a frame; 2. a press roller; 3. a liquid coating roller; 4. a liquid supply mechanism; 41. a liquid storage tank; 42. a water-absorbing felt; 421. a first clamping plate; 422. a second clamping plate; 423. swing arms; 43. a fluid supplementing port; 431. a float valve; 44. a spring; 5. a cleaning blade; 6. feeding into a hopper; 7. a sewage outlet; 71. a valve; 8. a spraying device; 9. a stem slice stripping scraper; 10. eccentric bearing seat; 101. a mounting hole; 102. a bar-shaped hole; 103. a notch; 104. a screw; 11. and (3) a bearing.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present utility model with specific examples. While the description of the utility model will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the utility model described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the utility model. The following description contains many specific details for the purpose of providing a thorough understanding of the present utility model. The utility model may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

At present, the mode of scraping the tablet pressing device mainly adopts a scraper, and the scraper is arranged to scrape the adhesive on the surface of the press roller when the press roller rotates, but when the adhesive on the surface of the press roller is too much, the cleaning efficiency of the scraper is reduced, a large amount of adhesive can not be removed, so that the press roller is blocked, and the production is influenced.

In order to solve the technical problems, the utility model provides the tabletting device, which is provided with the liquid coating roller, the liquid coating roller is used for coating the cleaning liquid on the circumferential surface of the compression roller, the cleaning liquid can infiltrate the bonding layer on the surface of the compression roller, so that the bonding layer is loosened, and the cleaning scraper is used for removing the bonding layer on the surface of the compression roller, so that the compression roller can be effectively cleaned, and the problem of shutdown of the tabletting device caused by clamping of the compression roller is avoided.

In order to make the technical scheme and advantages of the present utility model more clear, embodiments of the present utility model are described in further detail below.

Referring to fig. 1 to 4, an embodiment of the present utility model provides a sheeting apparatus including a frame 1, two press rollers 2, two applicator rollers 3, a liquid supply mechanism 4, and two cleaning blades 5. Wherein, the two press rolls 2 are hinged with the frame 1 respectively, the two press rolls 2 extend along a first direction (shown as X direction in figure 4) and the rotation directions of the two press rolls 2 are opposite (shown as R1 and R2 in figure 1 respectively), and a certain gap is arranged between the circumferential surfaces of the two press rolls 2; the two liquid coating rollers 3 are respectively hinged with the frame 1, the two liquid coating rollers 3 extend along the first direction, and the circumferential surfaces of the two liquid coating rollers 3 are respectively attached to the circumferential surfaces of the two pressing rollers 2; the liquid supply mechanism 4 is arranged on the frame, and the liquid supply mechanism 4 is used for supplying cleaning liquid to the liquid coating roller 3; the two cleaning scrapers 5 are respectively arranged on one sides of the two liquid coating rollers 3 along the rotation direction of the two press rollers 2, the two cleaning scrapers 5 are respectively tangent to the circumferential surfaces of the two press rollers 2, and the cleaning scrapers 5 are used for removing the adhesive on the circumferential surfaces of the press rollers 2.

When the tabletting device works, materials fall into the gap from the upper part of the gap between the two compression rollers 2, the two compression rollers 2 roll the materials in the process of relative rotation, the materials are rolled into sheets by the compression rollers 2, meanwhile, binding liquid formed by material dust, pectin and the like can be generated, the binding liquid can be smeared on the circumferential surface of the compression rollers 2 to form a binding layer, and the circumferential surface of the compression rollers 2 with the binding layer can be sequentially contacted with the liquid smearing roller 3 and the cleaning scraper 5 in the rotation process. According to the embodiment, the liquid supply mechanism 4 is utilized to provide cleaning liquid for the liquid coating roller 3 through the liquid coating roller 3, the circumferential surface of the liquid coating roller 3 is attached to the circumferential surface of the press roller 2, the liquid coating roller 3 can rotate under the driving of the press roller 2, so that the cleaning liquid on the liquid coating roller 3 can be uniformly coated on the circumferential surface of the press roller 2, the cleaning liquid can infiltrate the bonding layer on the surface of the press roller 2, the bonding layer is loosened, and the cleaning scraper 5 is arranged, so that the cleaning scraper 5 is tangent to the circumferential surface of the press roller 2, the bonding layer infiltrated by the cleaning liquid on the circumferential surface of the press roller 2 can be scraped by the cleaning scraper 5, the press roller 2 can be effectively cleaned, and the clamping of the press roller 2 is avoided.

Optionally, referring to fig. 1, a feeding hopper 6 is further provided on the frame 1, a feeding port is provided at an upper end of the feeding hopper 6, a discharging port is provided at a lower end of the feeding hopper 6, the discharging port is located above a gap between two press rolls, and the feeding hopper 6 is used for conveying materials into the gap. According to the embodiment, the feeding hopper 6 is arranged, the discharging hole of the feeding hopper 6 is positioned above the gap between the two press rolls 2, and the feeding hopper 6 can be utilized to guide materials, so that the materials can fall into the gap between the two press rolls 2, the materials can be effectively rolled by the two press rolls 2, and the problem that the materials are not rolled due to the fact that the materials fall into other positions is avoided.

Optionally, referring to fig. 1 and 2, the liquid supply mechanism 4 includes two liquid storage tanks 41, the two liquid storage tanks 41 are respectively located below the two liquid coating rollers 3, the liquid storage tanks 41 are used for containing cleaning liquid, liquid supplementing ports 43 are formed in the liquid storage tanks 41, at least one water absorption felt 42 is arranged in each liquid storage tank 41, the water absorption felt 42 is at least partially soaked in the cleaning liquid, and the upper ends of the water absorption felts 42 are in contact with the liquid coating rollers 3. Specifically, the water-absorbent felt 42 is made of a water-absorbent material (for example, wool felt), and the water-absorbent felt 42 is capable of absorbing the cleaning liquid from the liquid storage tank 41, conducting the cleaning liquid to the upper end of the water-absorbent felt 42, and then contacting the applicator roll 3 through the upper end thereof, so that the cleaning liquid on the water-absorbent felt 42 can be applied to the circumferential surface of the applicator roll 3.

Optionally, referring to fig. 1 and 3, the fluid-filling port 43 is provided with a float valve 431, and the float valve 431 is used for controlling the opening and closing of the fluid-filling port 43. In the present embodiment, the content of the cleaning liquid in the liquid storage tank 41 can be controlled by providing the liquid replenishing port 43 and the float valve 431. When the liquid level of the cleaning liquid in the liquid storage tank 41 rises, the floating ball in the float valve 431 floats upwards under the action of the cleaning liquid, so that the liquid supplementing port 43 is closed, and when the liquid level of the cleaning liquid in the liquid storage tank 41 decreases, the floating ball in the float valve 431 falls, and the liquid supplementing port 43 is opened, so that the cleaning liquid can be supplemented into the liquid storage tank 41 through the liquid supplementing port 43.

Alternatively, referring to fig. 1 and 2, one side of the water absorbent felt 42 is provided with a first clamping plate 421, the other side of the water absorbent felt 42 is provided with a second clamping plate 422, the first clamping plate 421 and the second clamping plate 422 are parallel, the first clamping plate 421 and the second clamping plate 422 are connected by bolts, and the first clamping plate 421 and the second clamping plate 422 are used for fixing the water absorbent felt 42. In this embodiment, the first clamping plate 421 and the second clamping plate 422 are provided, so that the content of the cleaning liquid in the water-absorbent felt 42 can be controlled. By rotating the bolts connected between the first clamping plate 421 and the second clamping plate 422, the distance between the first clamping plate 421 and the second clamping plate 422 can be adjusted, when the distance between the first clamping plate 421 and the second clamping plate 422 becomes smaller, the water-absorbent felt 42 is compressed, the cleaning liquid absorbable by the water-absorbent felt 42 decreases, and when the distance between the first clamping plate 421 and the second clamping plate 422 becomes larger, the water-absorbent felt 42 is released, and the cleaning liquid absorbable by the water-absorbent felt 42 increases.

Optionally, referring to fig. 1 and 2, a swing arm 423 is connected to the first clamping plate 421, one end of the swing arm 423 is hinged to the liquid storage tank 41, and the other end of the swing arm 423 is fixedly connected to the first clamping plate 421. A spring 44 is also arranged in the liquid storage tank 41, one end of the spring 44 is fixed at the bottom of the liquid storage tank 41, and the other end of the spring 44 is connected with the lower part of the swing arm 423. Specifically, the spring 44 is a compression spring. In the embodiment, the spring 44 and the swing arm 423 are arranged, so that the spring 44 can apply upward acting force to the swing arm 423, and the swing arm 423 can apply upward acting force to the first clamping plate 421 and the water-absorbing felt 42, so that the water-absorbing felt 42 can be in close contact with the applicator roll 3; meanwhile, the water-absorbing felt 42 can also apply upward force to the applicator roll 3 to enable the applicator roll 3 to be in close contact with the press roll 2, so that the applicator roll 3 can continuously apply cleaning liquid to the circumferential surface of the press roll 2.

Optionally, referring to fig. 1, the drain outlet 7 is further provided on the liquid storage tank 41, and the valve 71 is provided on the drain outlet 7, where the valve 71 is used to control the opening and closing of the drain outlet.

Optionally, referring to fig. 1, the liquid supply mechanism 4 further includes two spraying devices 8, where the two spraying devices 8 are both disposed on the frame 1, and a plurality of spraying holes are disposed on the spraying devices 8, and the two spraying devices 8 are respectively used for spraying water and steam to the circumferential surfaces of the two press rolls 2. In this embodiment, hot water or steam is sprayed to the surface of the press roller 2 by the spraying device 8, so that the adhesive layer on the surface of the press roller 2 is heated and infiltrated, and the release of the adhesive layer on the surface of the press roller 2 can be further promoted.

Illustratively, the diameter of the orifice may be 0.2-1mm.

Optionally, referring to fig. 1, two stem piece stripping scrapers 9 are respectively arranged on two sides below the gap between the two press rolls 2, the two stem piece stripping scrapers 9 are respectively tangent to the circumferential surfaces of the two press rolls 2, and the stem piece stripping scrapers 9 are used for stripping the material piece between the two press rolls 2 from the press rolls 2. In the embodiment, the stem piece stripping scraper 9 is arranged to strip the material piece between the two press rolls 2 from the press rolls 2, so that the material piece can be prevented from being stuck on the press rolls 2.

Optionally, referring to fig. 4 to 6, the present embodiment further includes an eccentric bearing seat 10, a bearing 11 and a screw 104, where the eccentric bearing seat 10 is hinged to the frame 1, the eccentric bearing seat 10 can rotate around a rotation axis relative to the frame 1, a mounting hole 101 is provided on the eccentric bearing seat 10, a certain distance is provided between an axis of the mounting hole 101 and the rotation axis (as shown by a dimension L in fig. 6), a plurality of strip-shaped holes 102 are provided on an end surface of the eccentric bearing seat 10, the strip-shaped holes 102 extend along a circumferential direction of the mounting hole 101, each strip-shaped hole 102 is uniformly arranged along a circumferential direction of the mounting hole 101, at least one notch 103 is provided on a circumferential surface of the eccentric bearing seat 10, and the notch 103 penetrates through two end surfaces of the eccentric bearing seat 10; the bearing 11 is arranged in the mounting hole 101, and the end part of the compression roller 2 is inserted into the bearing 11; screws 104 can be screwed with the machine frame 1 through the bar-shaped holes 102 to fix the eccentric bearing housing 10 to the machine frame 1. After long-time continuous operation of the tabletting device, on one hand, the compression roller 2 can wear, and when the wear amount reaches a certain degree, the thickness of tabletting can be influenced, and on the other hand, hard sundries can possibly appear in the working process of the compression roller 2 to cause the compression roller 2 to be blocked. In this embodiment, the gap between the two press rolls 2 can be adjusted by arranging the eccentric bearing seat 10, firstly loosening the screw 104 on the eccentric bearing seat 10 during adjustment, then inserting the screw into the gap 103 on the eccentric bearing seat 10 by using a wrench, applying force to the eccentric bearing seat 10 by using the wrench, so that the eccentric bearing seat 10 rotates around the rotation axis relative to the frame 1, and since a certain distance is reserved between the axis of the mounting hole 101 and the rotation axis of the eccentric bearing seat 10, when the eccentric bearing seat 10 rotates, the position of the bearing 11 arranged in the mounting hole 101 can be changed, and the position of the press roll 2 can be changed, so that the gap between the two press rolls 2 can be adjusted, the gap between the two press rolls 2 can be effectively compensated, and the two press rolls 2 can be separated when the press roll 2 is blocked by sundries, so that sundries which cause the press roll 2 to be blocked can be taken out.

Optionally, the present embodiment further includes a servo motor connected to the press roller 2, and the servo motor may be used to control the rotation speed of the press roller 2. In the actual production process, the operator can flexibly adjust the rotating speed of the press roller 2 according to the parameters such as the water content of the materials, the size of the sheet diameter of the materials and the like and the requirement on the thickness of the sheet.

Illustratively, the cleaning liquid may be water.

While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the utility model with reference to specific embodiments, and it is not intended to limit the practice of the utility model to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present utility model.

Claims (13)

1. A tablet press apparatus for pressing a material into a tablet shape, comprising:

a frame;

the two press rolls are hinged with the frame respectively, extend along the first direction and have opposite rotation directions, and a certain gap is formed between the circumferential surfaces of the two press rolls;

the two liquid coating rollers are respectively hinged with the frame, extend along the first direction, and are respectively attached to the circumferential surfaces of the two pressing rollers;

the liquid supply mechanism is arranged on the frame and is used for supplying cleaning liquid for the liquid coating roller;

the two cleaning scrapers are respectively arranged on one sides of the two liquid coating rollers along the rotation direction of the two pressing rollers, the two cleaning scrapers are respectively tangent to the circumferential surfaces of the two pressing rollers, and the cleaning scrapers are used for removing the adhesive on the circumferential surfaces of the pressing rollers.

2. The tabletting device of claim 1, wherein the frame is further provided with a feeding hopper, the upper end of the feeding hopper is provided with a feeding port, the lower end of the feeding hopper is provided with a discharging port, the discharging port is located above the gap between the two compression rollers, and the feeding hopper is used for conveying the materials into the gap.

3. A tabletting device as claimed in claim 2, wherein the liquid supply mechanism comprises two liquid storage tanks, the two liquid storage tanks are respectively positioned below the two liquid coating rollers, the liquid storage tanks are used for containing the cleaning liquid, liquid supplementing ports are formed in the liquid storage tanks, at least one water-absorbing felt is arranged in each liquid storage tank, the water-absorbing felt is at least partially soaked in the cleaning liquid, and the upper ends of the water-absorbing felts are in contact with the liquid coating rollers.

4. A tablet press according to claim 3, wherein the fluid refill port is provided with a float valve for controlling the opening and closing of the fluid refill port.

5. The tabletting device of claim 4, wherein a first clamping plate is arranged on one side of the water absorbing felt, a second clamping plate is arranged on the other side of the water absorbing felt, the first clamping plate and the second clamping plate are parallel, and the first clamping plate and the second clamping plate are connected through bolts.

6. The tabletting device of claim 5, wherein the first clamping plate is connected with a swing arm, the swing arm is hinged with the liquid storage tank, a spring is further arranged in the liquid storage tank, one end of the spring is fixed at the bottom of the liquid storage tank, and the other end of the spring is in contact with the swing arm.

7. The tablet press of claim 6, wherein the reservoir is further provided with a drain, and wherein the drain is provided with a valve for controlling the opening and closing of the drain.

8. The sheeting apparatus of claim 7, wherein said liquid supply mechanism further comprises two spray devices, both of said spray devices being disposed on said frame, said spray devices having a plurality of spray holes, both of said spray devices being configured to spray water and steam onto the circumferential surfaces of both of said pressure rollers, respectively.

9. A tabletting device as claimed in claim 8, wherein the orifice is 0.2-1mm in diameter.

10. The sheeting apparatus of claim 9, wherein a sheet stripping blade is provided on each of both sides of the lower portion of the gap, the two sheet stripping blades being tangential to the circumferential surfaces of the two rolls, respectively, the sheet stripping blade being adapted to strip the material sheeted by the two rolls from the rolls.

11. The tabletting apparatus of claim 10, further comprising:

the eccentric bearing seat can rotate relative to the frame around a rotation axis, a mounting hole is formed in the eccentric bearing seat, a certain distance is reserved between the axis of the mounting hole and the rotation axis, a plurality of strip-shaped holes are formed in the end face of the eccentric bearing seat, the strip-shaped holes extend along the circumferential direction of the mounting hole, the strip-shaped holes are uniformly distributed along the circumferential direction of the mounting hole, at least one notch is formed in the circumferential surface of the eccentric bearing seat, and the notch penetrates through the two end faces of the eccentric bearing seat;

the bearing is arranged in the mounting hole, and the end part of the compression roller is inserted into the bearing;

and the screw can penetrate through the strip-shaped hole and be in threaded connection with the frame so as to fix the eccentric bearing seat on the frame.

12. A sheeting apparatus as in claim 11 wherein the pressure roller is connected to a servo motor for controlling the rotational speed of the pressure roller.

13. A tablet press according to any one of claims 1 to 12, wherein the cleaning liquid is water.

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