CN111111557B

CN111111557B - Double-roller granulator

Info

Publication number: CN111111557B
Application number: CN202010048940.3A
Authority: CN
Inventors: 霍征征; 王飞跃; 靳留彬; 孔冬冬; 吕广飞; 李海松
Original assignee: Henan Zhengzhou Mining Machinery Co ltd
Current assignee: Henan Zhengzhou Mining Machinery Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2022-06-03
Anticipated expiration: 2040-01-16
Also published as: CN111111557A

Abstract

The invention relates to a pair-roller granulator which comprises a supporting frame, wherein a fixed roller and a movable roller which are of a cylindrical structure are rotatably arranged on the supporting frame, the pair-roller granulator also comprises two auxiliary rollers which are rotatably arranged on the supporting frame, the outer surface of the first auxiliary roller is attached to the outer surface of the fixed roller to extrude materials which are not demoulded on the outer surface of the fixed roller, the outer surface of the second auxiliary roller is attached to the outer surface of the movable roller to extrude materials which are not demoulded on the outer surface of the movable roller, a guide structure is further arranged on the supporting frame, an elastic mechanism is connected between the supporting frame and each auxiliary roller, the materials which are not completely demoulded can be conveyed to a position between a driving roller and the corresponding auxiliary roller along with the rotation of the corresponding driving roller to carry out secondary extrusion, and finally demoulding and granulation are realized.

Description

Double-roller granulator

Technical Field

The invention relates to a pair-roller granulator.

Background

In chemical, petrochemical, building material, mining and metallurgy, environmental protection and other industries, materials are often required to be made into small spherical or cylindrical shapes so as to facilitate subsequent processing. The traditional double-roller granulator is a forming device capable of making powdery or small granular materials into specific shapes, mainly comprises a roller part, an adjusting device, a driving device, a supporting frame and the like, and has the working principle that the materials fall between a fixed roller and a movable roller through a feeding hole, are extruded and formed, and are demoulded into granules. The device has the characteristics of stable operation, low noise, less dust, reliable performance, convenient maintenance and the like. However, when a conventional twin-roll granulator processes a material with high viscosity, the material is easily adhered to the surface of the roll or is not completely demoulded and granulated in the holes on the surface of the roll, the material cannot be demoulded and granulated at one time, and when the material adhered to the surface of the roll enters the extrusion position of the roll again, the material can affect the next demoulded and granulated at the corresponding hole position, and the material needs to be cleaned manually, which affects the granulation efficiency.

Disclosure of Invention

The invention aims to provide a double-roller granulator to solve the problem that materials with high viscosity are easy to adhere when extruded and cannot be extruded and demoulded at one time to form granules in the double-roller granulator in the prior art.

In order to solve the problems, the double-roller granulator adopts the following technical scheme:

a pair-roller granulator comprises a supporting frame, a fixed roller and a movable roller which are rotatably provided with a cylindrical structure, the movable roller and the supporting frame are in guide fit so that the movable roller moves towards and away from the fixed roller, the outer surfaces of the movable roller and the fixed roller are provided with granulation holes, the axes of the movable roller and the fixed roller are parallel to each other, the outer surfaces of the movable roller and the fixed roller are mutually attached to extrude materials, the fixed roller and the movable roller are internally provided with discharge channels for discharging granules after extrusion granulation, the supporting frame is provided with a main driving device for driving the fixed roller and the movable roller to rotate, the pair-roller granulator also comprises two auxiliary rollers rotatably arranged on the supporting frame, the axes of the two auxiliary rollers are parallel to the axis of the fixed roller, the two auxiliary rollers are defined as a first auxiliary roller and a second auxiliary roller respectively, the outer surface of the first auxiliary roller is attached to the outer surface of the fixed roller so as to extrude the materials which are not demolded on the outer surface of the fixed roller, the outer surface of the second auxiliary roller is attached to the outer surface of the movable roller to extrude materials which are not demolded on the outer surface of the movable roller, a guide structure which is used for being in guide fit with the auxiliary rollers to enable the auxiliary rollers to move towards the corresponding fixed rollers and the corresponding movable rollers along the radial direction is further arranged on the supporting frame, and an elastic mechanism which is used for applying acting force towards the corresponding fixed rollers and the corresponding movable rollers to the auxiliary rollers to enable the auxiliary rollers to be pressed on the corresponding fixed rollers and the corresponding movable rollers is connected between the supporting frame and each auxiliary roller.

Further, the axes of each auxiliary roller, the movable roller and the fixed roller are coplanar.

Furthermore, both ends of the central shaft are installed on the supporting frame through auxiliary roller bearing seats, the guide structure comprises guide rails arranged on the supporting frame, the guide rails extend towards a plane where the direction perpendicular to the axis of the auxiliary roller is located, and guide grooves matched with the guide rails in a guiding mode are arranged on the auxiliary roller bearing seats.

Furthermore, the elastic mechanism comprises a pressure spring pushing mechanism horizontally pushing and pressing between the supporting frame and each auxiliary roller, the pressure spring pushing mechanism comprises a rod seat connected with the supporting frame and a pressure spring sleeved on the rod seat, and the other end of the pressure spring is connected to a bearing seat of the auxiliary roller.

Furthermore, an adjusting structure for adjusting the pretightening force of the pressure spring is arranged on the rod seat.

Furthermore, the rod seat is a screw rod fixed on the supporting frame, and the adjusting structure comprises an adjusting nut which is sleeved on the screw rod and used for adjusting the pre-tightening force of the pressure spring.

Further, the fixed roller and the movable roller both comprise mandrels, the rollers are sleeved outside the mandrels, the granulating holes are formed in the rollers, the rollers are plugged at one ends of the rollers, partition plates are connected between the rollers and the mandrels and annularly arranged around the circumferential direction of the mandrels, each partition plate is an inclined plate which is close to the axis of the mandrel to the other end gradually from the plugging end of the roller along the axial direction of the mandrel, and channels between the partition plates form the discharge channels.

The invention has the following beneficial effects: compared with the prior art, the double-roller granulator has the advantages that two auxiliary rollers are additionally arranged on two sides of the driving roller consisting of the fixed roller and the movable roller during use, the auxiliary rollers rotate synchronously along with the corresponding driving roller, and in the granulating process, the auxiliary rollers can be always closely pushed against the corresponding driving roller due to the arrangement of the elastic mechanism, and the arrangement of the guide mechanism ensures that the movement of the auxiliary rollers does not cause the relative deflection of the axes of the auxiliary rollers and the corresponding driving roller. During pelletization, the materials which are bonded on the surfaces of the wheel rollers of the fixed roller and the movable roller and in the holes on the surface of the roller and are not completely demoulded can be conveyed to the positions between the driving roller and the corresponding auxiliary roller along with the rotation of the corresponding driving roller to carry out secondary extrusion, finally, the demould granulation is realized, the production efficiency is effectively improved, the structure is simpler, the use is very convenient, and the structure is more compact.

Drawings

In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings needed to be used in the embodiment will be briefly described as follows:

FIG. 1 is a schematic structural view of a specific embodiment of the twin roll granulator of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a top view of FIG. 2;

FIG. 5 is a sectional view taken along line E in FIG. 4;

FIG. 6 is a sectional view taken along line D of FIG. 4;

fig. 7 is a structural sectional view of the fixing roller in fig. 1.

Description of reference numerals: 1-a support frame; 2-a middle beam; 3-upright post; 4-a feeding hopper; 5-fixing the roller; 6-a movable roller; 7-fixing the bearing seat; 8-a movable bearing seat; 9-a sliding guide rail; 10-a separator; 11-a support seat; 12-a drive motor; 13-a speed reducer; 14-a chain; 15-a first auxiliary roller; 16-a second auxiliary roller; 17-a guide rail; 18-a screw rod; 19-a pressure spring; 20-adjusting the nut; 21-fixing a nut; 22-auxiliary roll chock.

Detailed Description

In order to make the technical purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments.

The specific embodiment of the twin-roll granulator according to the present invention, as shown in fig. 1 to 7, mainly comprises the following structure: a support frame 1, a roller portion, a driving portion, and an adjusting portion. For the supporting frame 1, in this embodiment, the supporting frame 1 is a rectangular frame structure, and has structures of beams, stringers, and columns 3, etc., and defines that the long side direction of the supporting frame 1 extends along the left-right direction, and the width direction extends along the front-back direction. The other components are all mounted on the supporting frame 1 and are basic carriers of the other components, however, in other embodiments, the specific structural form of the supporting frame 1 is not limited, and those skilled in the art can design the components at will according to actual needs.

The upper part of the middle position of the left and right directions of the supporting frame 1 is supported with a feeding hopper 4, the upper half part of the feeding hopper 4 is of a straight cylinder structure, and the lower half part of the feeding hopper is of a necking structure. Of course, in other embodiments, the material feeding port may be in other shapes, and is not specifically limited, or an external device may be directly used to feed the material without the material feeding port.

The intermediate position department of braced frame 1's stand 3 is connected with the intermediate beam 2 of extending about, two front and back interval arrangement's intermediate beam 2 mainly is in order to realize the equipment of wheel roller part, unanimous with prior art, the pair roller granulator in this embodiment includes fixed roll 5 and activity roller 6, and fixed roll 5 and activity roller 6 are collectively called the drive roll, establish the roller in the dabber outside including dabber and cover, offer the pelletization hole that is used for the pelletization on the roller surface, when actual assembly: as shown in the figure, the fixed bearing seats 7 extending back and forth are fixedly installed at the upper parts of the right sides of the middle positions of the two middle beams 2, the axes of the two fixed bearing seats 7 are consistent, and two ends of the mandrel of the fixed roller 5 are respectively inserted onto the two fixed bearing seats 7 to support the fixed roller 5; in addition, a sliding guide rail 9 is attached to the upper portion of the left side of the middle position of the two middle beams 2, the sliding guide rail 9 extends along the left-right direction, a movable bearing seat 8 is correspondingly assembled on the sliding guide rail 9 in a guiding manner, the axes of the movable bearing seats 8 on the two guide rails 17 are coaxially arranged, and two ends of a mandrel of the movable roller 6 are respectively inserted onto the two movable bearing seats 8 to support the movable roller 6.

For the fixed roller 5 and the movable roller 6, the structures are basically the same as the existing structures, and it should be particularly noted that, a plurality of partition plates 10 are arranged on the outer side wall of the mandrel at intervals along the circumferential direction of the mandrel, the plate surface of each partition plate 10 is parallel to the radial direction of the mandrel, the rear end of the roller is blocked, and each partition plate 10 is inclined from the blocked end of the roller to the forward direction gradually towards the direction close to the axis of the mandrel to form an inclined plate structure. The material is granulated and formed in the arrangement, enters the roller and can be discharged from the unclosed end.

Supporting seats 11 are arranged on the front side and the rear side of the supporting frame 1, driving motors 12 are mounted on the supporting seats 11, the driving motor 12 on one side is connected with a speed reducer 13 through a coupler, the output end of the speed reducer 13 is coaxially connected with the corresponding mandrel of the fixed roller 5 through a coupler, the speed reducer 13 output by the driving motor 12 on the other side is connected with the mandrel of the movable roller 6 through a gear and a chain 14, and then the fixed roller 5 and the movable roller 6 are driven to rotate reversely.

Under normal operating conditions, the driving motor 12 drives the fixed roller 5 and the movable roller 6 to rotate, the feeding hopper 4 is positioned above the extrusion surfaces of the fixed roller 5 and the movable roller 6, materials in the fed materials are fed between the fixed roller 5 and the movable roller 6, and the materials are extruded to enter the granulating holes in the fixed roller 5 and the movable roller 6, so that the demolding and the granulation are realized.

In the present embodiment, two auxiliary rollers are rotatably provided on the support frame 1, the axes of the two auxiliary rollers are parallel to the axes of the movable roller 6 and the fixed roller 5, and the axes of the two auxiliary rollers and the respective rollers such as the fixed roller 5 and the movable roller 6 are coplanar. Of course, in other embodiments, the axes of the various rollers may be merely parallel and not coplanar. Defining the two auxiliary rollers as a first auxiliary roller 15 and a second auxiliary roller 16, wherein each auxiliary roller comprises a central shaft and a cylinder fixed outside the central shaft, and the first auxiliary roller 15 is positioned at the right end of the supporting frame 1, and the outer surface of the first auxiliary roller is attached to the outer surface of the fixed roller 5 to press the unmolded material on the outer surface of the fixed roller 5, and the material is extruded into the nearby granulating holes to be demolded into granules again; the corresponding second auxiliary roller 16 is positioned at the left end position of the supporting frame 1, the outer surface of the second auxiliary roller 16 is attached to the outer surface of the movable roller 6 to extrude the unmolded material on the outer surface of the movable roller 6, and in addition, an elastic mechanism for applying acting force moving towards the corresponding fixed roller 5 and the corresponding movable roller 6 to the corresponding auxiliary roller so as to enable the auxiliary roller to be pressed on the corresponding fixed roller 5 and the corresponding movable roller 6 is connected between the supporting frame 1 and each auxiliary roller. Meanwhile, a guide mechanism which is used for being matched with the auxiliary roller in a guide mode so as to enable the auxiliary roller to move towards the corresponding fixed roller 5 and the corresponding movable roller 6 in the radial direction is further arranged on the supporting frame 1.

The auxiliary rollers are arranged mainly because when materials with high viscosity are processed, the materials are easy to adhere to the surfaces of the rollers or are not completely demoulded and granulated in holes on the surfaces of the rollers, the materials cannot be extruded and demoulded and granulated at one time, and when the materials adhered to the surfaces of the rollers enter the extrusion positions of the rollers again, the materials adhered to the surfaces of the rollers at the corresponding holes can influence next demoulded and granulated at the corresponding hole positions, manual cleaning is needed, granulation efficiency is influenced, and in the actual use process, the materials adhered to the surfaces of the rollers of the fixed rollers 5 and the movable rollers 6 and the holes on the surfaces of the rollers but are not completely demoulded can be conveyed to the space between the corresponding driving roller and the auxiliary roller along with the rotation of the corresponding driving roller to carry out secondary extrusion, and finally, the demoulded and granulated materials are realized.

For the guiding mechanism and the elastic mechanism, the two auxiliary rollers are identical in structure and are oppositely arranged, for the purpose of detailed description, taking the first auxiliary roller 15 on one side of the fixed roller 5 as an example, in this embodiment, both ends of the central shaft of the first auxiliary roller 15 are installed on the supporting frame 1 through the auxiliary roller bearing seats 22, the guiding mechanism includes the guide rails 17 which are arranged on the middle beam 2 and the top side beam of the supporting frame 1 and are located on the right side of the fixed roller 5, the guide rails 17 horizontally extend along the left-right direction, that is, extend towards the plane in which the direction perpendicular to the axis of the auxiliary roller is located, the auxiliary roller bearing seats 22 are provided with guide grooves which are in guiding fit with the guide rails 17, and in the actual use process, the first auxiliary roller 15 can slide along the left-right direction along with the auxiliary roller bearing seats 22. Of course, in other embodiments, the guiding mechanism may be a guiding groove directly provided on the intermediate beam 2, a corresponding guiding rail 17 provided on the auxiliary roller bearing seat 22, or a guiding rod for guiding the auxiliary roller supporting shaft. For the elastic mechanism, the elastic mechanism comprises a pressure spring pushing mechanism horizontally pushed and pressed between the supporting frame 1 and the first auxiliary roller 15, the pressure spring pushing mechanism comprises a rod seat arranged on the upright post 3 at the position of the right end of the supporting frame 1, the left end of the rod seat extends leftwards, a pressure spring 19 is sleeved on the rod seat, a boss extending rightwards is correspondingly arranged on the right side of the first auxiliary roller 15, and the left end of the pressure spring 19 is sleeved on the boss, so that the pressure spring 19 is pushed and arranged between the rod seat and the auxiliary roller bearing seat 22, and in the actual working process, the pressure spring 19 has certain pretightening force and can tightly press and arrange the integral first auxiliary roller 15 on the fixed roller 5. Of course, in other embodiments, the elastic mechanism may also adopt a tension spring pulling structure disposed between the support frame 1 and the auxiliary roller bearing housing 22; the pressure spring 19 of the pressure spring pushing mechanism can also be arranged in the guide rail 17, and a blocking edge which is matched with the pressure spring 19 in a pushing manner is arranged on the corresponding auxiliary roller bearing seat 22, so that the pushing of the auxiliary roller bearing seat 22 is realized.

Furthermore, be equipped with the regulation structure that is used for adjusting the pretightning force of pressure spring 19 on the foretell pole seat, set up the regulation structure mainly in order to guarantee even fixed roller 5 becomes thin along with pelletization processing surface wearing and tearing, the existence of spring pretightning force can promote to assist roller bearing frame 22 and make and be in the state of in close contact with between fixed roller 5 and the first roller 15 of assisting always, prevents to make the material pelletize inadequately because fixed roller 5 surface wear, reduces pelletization efficiency. Specifically, in this embodiment, the rod seat is a screw rod 18 fixed on the corresponding upright 3 of the supporting frame 1, the screw rod 18 is fixed on the upright 3 by using a fixing nut 21, the adjusting structure includes an adjusting nut 20 sleeved at a position near the left end of the screw rod 18, the adjusting nut 20 is in abutting fit with the compression spring 19, and the pre-tightening force of the compression spring 19 can be adjusted by screwing the adjusting nut 20 to change the front and rear positions of the adjusting nut 20. Of course, in other embodiments, the pre-tightening force may be provided by providing the adjusting nut 20 on one side of the auxiliary roller bearing seat.

The configuration of the guide mechanism and other resistance mechanisms disposed in the second auxiliary roller 16 described above is the same as the configuration of the first auxiliary roller 15, and will not be described in detail.

This pair roller granulator is in actual use, and the setting of assisting the roller can make fixed roll 5 and activity roller 6 be close contact with relatively all the time, and simultaneously, also close contact between first supplementary roller 15 and fixed roll 5, second supplementary roller 16 and the activity roller 6 makes the material that bonds on the surface of activity roller 6 and fixed roll 5 receive secondary extrusion, and then the drawing of patterns granulation. Simultaneously, sometimes have the high large granule of hardness, be difficult for being rolled in the material, roll by force and can cause the damage to hub portion, perhaps make wheel hub block motionlessly, burn out the motor easily, exert an influence to equipment life simultaneously. Therefore, when large-particle materials enter between the movable roller 6 and the fixed roller 5, the materials extrude the movable roller 6 and the fixed roller 5, and the fixed roller 5 is kept still due to fixation; the movable roller 6 is extruded by the material, and the movable bearing seat 8 moves leftwards along the sliding guide rail 9, so that the auxiliary roller and the auxiliary roller bearing seat 22 are pushed leftwards to move along the guide rail 17, and meanwhile, the pressure spring 19 is compressed, so that large-particle waste materials are discharged between the fixed roller 5 and the movable roller 6. After the waste material is discharged, the auxiliary roller is pushed to act through the action of the pressure spring 19 so as to restore to the original normal position. Since the second auxiliary roller 16 is connected to the driving motor 12 of the transmission part via the chain 14, the right and left movement of the second auxiliary roller 16 at a proper distance is absorbed by the chain 14 and does not affect the normal transmission.

Finally, it should be noted that: the above embodiments are merely illustrative and not restrictive of the technical solutions of the present invention, and any equivalent substitutions and modifications or partial substitutions made without departing from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A pair-roller granulator comprises a supporting frame, a fixed roller and a movable roller which are rotatably provided with a cylindrical structure on the supporting frame, the movable roller and the supporting frame are in guide fit so that the movable roller moves towards and away from the fixed roller, granulating holes are formed in the outer surfaces of the movable roller and the fixed roller, the axes of the movable roller and the fixed roller are parallel to each other, the outer surfaces of the movable roller and the fixed roller are attached to each other for extruding materials, discharge channels for discharging particles after extrusion granulation are formed in the fixed roller and the movable roller, and a main driving device for driving the fixed roller and the movable roller to rotate is arranged on the supporting frame. The outer surface of the first auxiliary roller is attached to the outer surface of the fixed roller to extrude materials which are not demoulded on the outer surface of the fixed roller, the outer surface of the second auxiliary roller is attached to the outer surface of the movable roller to extrude materials which are not demoulded on the outer surface of the movable roller, each auxiliary roller comprises a central shaft and a cylinder fixed outside the central shaft, the movable roller and the fixed roller are both driving rollers, the materials which are adhered to the surfaces of the fixed roller and the movable roller and are positioned in holes in the surfaces of the rollers and are not completely demoulded can be conveyed to the corresponding positions between the driving roller and the auxiliary roller along with the rotation of the corresponding driving roller to be secondarily extruded, a guide structure which is used for being in guide fit with the auxiliary rollers to enable the auxiliary rollers to move towards the corresponding fixed roller and the movable roller along the radial direction is further arranged on the supporting frame, and acting force which is used for applying the corresponding fixed roller and movable roller to the auxiliary roller to enable the auxiliary roller to be jacked on the corresponding elastic machines on the fixed roller and the corresponding movable roller Structuring; the guide structure comprises a guide rail arranged on the support frame, the guide rail extends towards a plane in which the direction vertical to the axis of the auxiliary roller is located, and a guide groove in guide fit with the guide rail is arranged on the auxiliary roller bearing seat; the elastic mechanism comprises a pressure spring pushing mechanism horizontally pushed and pressed between the supporting frame and each auxiliary roller, the pressure spring pushing mechanism comprises a rod seat connected with the supporting frame and a pressure spring sleeved on the rod seat, and the other end of the pressure spring is connected to the auxiliary roller bearing seat.

2. The twin-roll granulator according to claim 1, wherein the rod seat is provided with an adjustment structure for adjusting the pre-tightening force of the compression spring.

3. The pair roller granulator according to claim 2 wherein the rod seat is a screw fixed on the support frame, and the adjusting structure comprises an adjusting nut sleeved on the screw for adjusting the pre-tightening force of the compression spring.

4. The paired-roller granulator according to any one of claims 1 to 3, wherein the fixed roller and the movable roller each comprise a mandrel, and a roller sleeved outside the mandrel, the granulation hole is formed in the roller, one end of the roller is blocked, a partition plate circumferentially arranged around the mandrel is connected between the roller and the mandrel, each partition plate is an inclined plate which is inclined from the blocked end of the roller to the other end of the roller gradually close to the axis of the mandrel along the axial direction of the mandrel, and a channel between the partition plates forms the discharge channel.