Inclined feeding auxiliary device of dry type granulator
By installing an inclined feeding auxiliary device on the dry granulator, the problems of discontinuous feeding and inconsistent thickness of low specific gravity materials were solved by using an inclined feeding screw and a brushless variable frequency motor, thus achieving stable operation of the equipment and improving the quality of the granules.
Patent Information
- Application Number
- CN202520526007.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-25
AI Technical Summary
When processing powder materials with low specific gravity and poor flowability, existing dry granulation machines often experience bridging and cavities in the hopper, which prevents the material from feeding normally, resulting in insufficient continuous feeding to the next stage of the equipment and inconsistent thickness of the rolled sheets.
An inclined feeding auxiliary device for a dry pellet mill was designed, including a motor, a transmission base, a feeding screw, a conveying pipe, a hopper, and a mounting base. By adding an inclined feeding screw at the hopper outlet to form a two-stage screw conveying system with the horizontal screw feeder of the dry pellet mill, combined with a brushless variable frequency speed control motor and a vibrator, stable material conveying and prevention of bridging and cavity phenomena can be achieved.
It improves the feeding continuity and roll forming thickness consistency of low-density, poor-flowability materials, reduces equipment modification costs, and can adapt to the production needs of extreme materials, achieving stable material conveying and improved sheet quality.
Smart Images
Figure CN223945589U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dry granulation system technical field especially relates to a dry granulator auxiliary device of oblique feeding. BACKGROUND
[0002] The dry granulator is a kind of equipment that powder raw materials are rolled into sheets, then are made into granules, and is commonly used in food, pharmaceutical, chemical and other industries. Its wide application environment determines that the types of materials are various, and the physical properties of different materials are quite different. Among the various powder raw materials in the granulation production, low specific gravity and poor flowability materials are often encountered. These materials are prone to form arching and cavity in the hopper of conventional dry granulator, so that the materials cannot be normally fed, resulting in insufficient continuity of downstream feeding of the equipment, and inconsistent thickness of rolled sheets. The existing processing technology is to increase the outlet of the hopper and increase the vibrator, so that the materials can be conveniently fed downward by relying on their own gravity, but both of these technologies cannot provide a downward extrusion force to the materials. On the equipment with smaller capacity, the position of the increased hopper outlet and the increased vibrator is limited, so these two methods still cannot meet the normal production of low specific gravity and poor flowability materials in conventional dry granulator. SUMMARY
[0003] To solve the above-mentioned problems of the existing dry granulation technology, i.e. low specific gravity and poor flowability powder materials are prone to form arching and cavity in the hopper of conventional dry granulator, so that the materials cannot be normally fed, resulting in insufficient continuity of downstream feeding of the equipment, and inconsistent thickness of rolled sheets, the utility model provides a dry granulator auxiliary device of oblique feeding, which can be installed and used on the existing dry granulator without excessive equipment modification. After the low specific gravity and poor flowability materials pass through the auxiliary feeding device, they can easily enter the downstream feeding mechanism, the influence of material arching and cavity formation on feeding is solved, the continuity of feeding and the consistency of thickness of rolled sheets by the roller are ensured, and the applicability of the equipment to extreme materials is improved.
[0004] To achieve the above-mentioned purpose, the utility model provides a dry granulator auxiliary device of oblique feeding, characterized by comprising a motor, a transmission seat, a feeding screw, a conveying pipeline, a hopper and a mounting seat. The motor is installed on the transmission seat, the transmission seat is installed on the upper end of the conveying pipeline, the feeding screw is coaxially sleeved in the conveying pipeline, and the upper end is fixedly connected with the output shaft of the motor through a shaft coupling. The axis of the conveying pipeline and the axis of the horizontal screw feeder of the dry granulator form an included angle of 35-55°. The hopper is vertically arranged in the middle part of the conveying pipeline, the upper end is provided with a feeding flange, the lower end is provided with a discharge port, the discharge port is communicated with the conveying pipeline, the lower end of the conveying pipeline is connected with an equal-diameter elbow, the lower end of the equal-diameter elbow is fixedly connected with the mounting seat, the lower end of the feeding screw extends into the upper end port of the equal-diameter elbow, and the mounting seat is fixedly connected with the upper end feeding port of the horizontal screw feeder of the dry granulator.
[0005] Further, the side width of the hopper is large at the bottom and small at the top, and the front side of the hopper is a slope extending upwards and forwards, and the included angle between the slope and the vertical surface is less than or equal to 30 degrees; and the length of the front side of the hopper is 2-2.5 times the diameter of the conveying pipe.
[0006] The utility model lengthens the existing hopper, and the width is large at the bottom and small at the top, so that the contact area between the material and the feeding screw is increased, and the material is not easy to form a bridge during feeding.
[0007] Further, the motor is a brushless variable-frequency motor, and a motor controller of the motor is mounted on a rack of the dry granulator or built in the rack, and is used for controlling the starting, rotating speed and rotating direction of the motor.
[0008] When the existing dry granulator is modified according to the utility model, the brushless variable-frequency motor can be used without changing the control program of the dry granulator and without modifying the circuit, and the rotating speed of the feeding screw can be adjusted only by connecting electricity.
[0009] Further, the utility model also comprises a quick connector and a clamp, the lower end surface of the transmission seat is attached to the upper end surface of the quick connector, the lower end of the quick connector is a cylindrical connector pipe, the upper end of the quick connector is provided with a first flange extending outward, the upper and lower end ports of the transmission seat are both provided with a second flange extending outward, the upper end second flange is fixedly connected with the motor, the lower end second flange is connected with the first flange, and the clamp is sleeved outside the first flange and the second flange to fixedly connect the transmission seat with the quick connector.
[0010] Further, two rolling bearings are arranged between the inner side wall of the inner hole of the transmission seat and the outer side surface of the shaft coupling, and a positioning shaft sleeve is arranged between the two rolling bearings.
[0011] The rolling bearings are arranged to fix and stably drive the feeding screw.
[0012] Further, the utility model also comprises a vibrator, the vibrator is arranged on the outer side wall of the hopper, and is used for providing continuous vibration force to the hopper to prevent the material from bridging and forming a cavity.
[0013] Further, the utility model also comprises a breather, which is used in cooperation with the vacuum feeding machine to realize automatic feeding of the vacuum feeding machine.
[0014] Further, the motor is a servo motor, and the rotating speed of the servo motor is controlled in cooperation with the rotating speed of the horizontal screw feeder of the dry granulator to realize self-adaptive speed regulation of the motor.
[0015] Further, a locking plate is arranged on the rear side wall of the hopper, and is used for fixedly connecting the hopper with the rack of the dry granulator.
[0016] Further, the front side of the mounting seat is also provided with a fixing plate, which is used for fixedly connecting with the horizontal screw feeder shell of the dry granulator.
[0017] Compared with the prior art, the utility model has the beneficial effects that:
[0018] 1、 the utility model discloses a hopper outlet is additionally provided with the inclined feeding screw, and two -stage screw conveyance is formed with the horizontal screw feeder of dry granulator, and the poisson degree of material is reduced, becomes more compact when conveying to the pressure roller extrusion area, and low specific gravity material can also normally produce continuous and the thickness consistent pressure piece of production;
[0019] 2、 the utility model discloses that the length of hopper is lengthened, and the width is big down small, and the discharge port is through with the inclined conveying pipeline, and the contact area of low specific gravity, flowability material and feeding screw is increased, and the contact area is widened and lengthened, and material is not easy to form the bridging in the feeding process, and the vibrator is installed on the hopper, and vibration force is continuously provided, and can timely eliminate the cavity formed by material;
[0020] 3、 the utility model discloses only needs to carry out subtle modification to dry granulator, and the fixing and installation of inclined feeding auxiliary device can be realized, and the equipment modification cost is low, and the material handling capacity of equipment is improved;
[0021] 4、 the utility model discloses also can be used to produce ordinary high specific gravity material, and the feeding screw speed is adjusted through motor controller, and the feeding speed can be matched with the horizontal screw feeder rate of dry granulator.
[0022] 5、 the utility model discloses that the equal diameter elbow transition is designed between conveying pipeline and mounting seat, and the feeding screw can not extend too much into the equal diameter elbow, and this area plays the buffering effect to powder conveying, and can effectively prevent the phenomenon that the feeding screw is locked because of excessive load;
[0023] 6、 the utility model discloses also can be used as the standard device of dry granulator, and the motor is replaced into servo motor, and finally realizes the interlocking control of the feeding screw speed and the horizontal screw feeder speed of dry granulator, and realizes the self -adaptation adjustment of feeding screw speed. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is the front structure schematic drawing of the utility model embodiment;
[0025] Figure 2 It is the side structure schematic drawing of the utility model embodiment;
[0026] Figure 3 It is the section structure schematic drawing of the utility model embodiment;
[0027] Figure 4 It is the motor controller structure schematic drawing of the utility model embodiment.
[0028] Figure 5 This is a schematic diagram of the connection structure between the present invention and the dry granulation machine.
[0029] In the diagram: 100, Inclined feeding auxiliary device; 101, Motor; 1011, Motor controller; 102, Transmission seat; 103, Clamp; 104, Quick-connect coupling; 105, Conveying pipe; 106, Coupling; 107, Feeding screw; 108, Hopper; 1081, Feed flange; 1082, Discharge port; 109, Vibrator; 110, Breather; 111, Equal diameter elbow; 112, Mounting seat; 113, Fixing plate; 114, Rolling bearing; 115, Positioning bushing; 116, Locking plate; 200, Dry pellet mill; 201, Horizontal screw feeder. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] like Figures 1-5 As shown, this embodiment of the utility model includes a motor 101, a transmission base 102, a feeding screw 107, a conveying pipe 105, a hopper 108, and a mounting base 112. The motor 101 is mounted on the transmission base 102, which is mounted on the upper end of the conveying pipe 105. The feeding screw 107 is coaxially sleeved inside the conveying pipe 105, and its upper end is fixedly connected to the output shaft of the motor 101 via a coupling 106. The angle between the axis of the conveying pipe 105 and the axis of the horizontal screw feeder 201 of the dry granulator 200 is... θ=35°, the hopper 108 is vertically installed in the middle of the conveying pipe 105, with a feed flange 1081 at the upper end and a discharge port 1082 at the lower end. The discharge port 1082 is connected to the conveying pipe 105. The lower end of the conveying pipe 105 is connected to an equal diameter elbow 111. The lower end of the equal diameter elbow 111 is fixedly connected to the mounting base 112. The lower end of the feeding screw 107 extends into the upper port of the equal diameter elbow 111. The mounting base 112 is fixedly connected to the upper feed port of the horizontal screw feeder 201 of the dry granulator 200.
[0032] In this embodiment, an inclined feeding screw 107 is added to the discharge port 1082 of the hopper 108 to form a two-stage screw conveying with the horizontal screw feeder 201 of the dry granulator. This reduces the Poisson's density of the material, making it more compact when conveyed to the extrusion zone of the pressure roller. Even low-density materials can be produced into continuous tablets with consistent thickness.
[0033] Furthermore, the width of the hopper 108 is wider at the top and narrower at the bottom. The front side of the hopper 108 is an inclined plane extending forward and upward from bottom to top. The angle α between the inclined plane and the vertical plane is ≤30°. The length of the front side of the hopper 108 is 2.5 times the diameter of the conveying pipe 105.
[0034] This embodiment lengthens the existing hopper and widens it from top to bottom, increasing both the area of the hopper opening and the hopper slope, making it less likely for material to accumulate inside the hopper.
[0035] like Figure 3 As shown, the conveying pipe 105 makes an angle of 35° with the horizontal direction. When the feeding screw 107 is parallel to the horizontal direction, the length of contact between the feeding screw 107 and the material is x; when the feeding screw 107 makes a certain angle θ with the horizontal direction, the length of contact between the feeding screw 107 and the material is... The increased contact length between the feed screw 107 and the material is Therefore, under the same contact width, the conveying pipe 105 increases the contact area between the feeding screw 104 and the material due to its inclination. With the contact area widened and lengthened, the material is less likely to form bridging during the feeding process.
[0036] Furthermore, motor 101 is a brushless variable frequency speed control motor. The motor controller 1011 is installed on the frame of the dry granulator 200, drawing power from the circuit board of the dry granulator to achieve manual start-up, shutdown, adjustment of reverse rotation, and speed increase / decrease. Alternatively, it can be built into the dry granulator frame, with the motor controller 1011 connected to a PLC, enabling indirect control of motor 101 by the equipment PLC.
[0037] When modifying an existing dry pellet mill 200 using a brushless variable frequency speed control motor, the speed of the feeding screw 107 can be adjusted without changing the control program or modifying the circuit.
[0038] In another embodiment, motor 101 is a servo motor, the speed of which is linked and controlled with the horizontal screw feeder 201 of the dry pellet mill 200 to achieve adaptive adjustment of motor 101 speed.
[0039] Further, the quick connector 104 and the clamp 103 are further included, the lower end surface of the transmission seat 102 is attached to the upper end surface of the quick connector 104, the lower end of the cylindrical connector pipe of the quick connector 104 is butted to the upper end of the conveying pipeline, the upper end of the quick connector 104 is provided with the first flange extending outward, the upper and lower end ports of the transmission seat 102 are provided with the second flange extending outward, the upper end second flange is fixedly connected with the motor 101, the lower end second flange is butted to the first flange, and the clamp is sleeved outside the first flange and the second flange, so that the transmission seat 102 and the quick connector 104 are fixedly connected.
[0040] Further, the inner side wall of the inner hole of the transmission seat 102 and the outer side surface of the shaft coupling 106 are further provided with two rolling bearings 114, and the two rolling bearings 114 are provided with the positioning shaft sleeve 115.
[0041] The rolling bearing 114 is arranged to realize the fixation and stable transmission of the feeding screw 107.
[0042] Further, the vibrator 109 is further included and arranged on the outer side wall of the hopper 108.
[0043] The vibrator 109 adopts the stainless steel turbine vibrator GT-08. The vibrator 109 provides continuous vibration force for the hopper 108 by being connected with the air pipe. The end of the air pipe connected with the vibrator 109 can be provided with a throttle valve for adjusting the vibration size of the vibrator 109, artificially controlling the vibration amplitude, and effectively preventing the bridging and cavity of the material.
[0044] Further, the breather 110 is further included and used in cooperation with the vacuum feeding machine to realize automatic feeding of the vacuum feeding machine.
[0045] Further, the locking plate 116 is arranged on the rear side wall of the hopper 108 and used for fixedly connecting the hopper 108 to the rack of the dry granulator 200.
[0046] Further, the fixing plate 113 is further arranged on the front side of the mounting seat 112 and used for fixedly connecting with the outer shell of the horizontal screw feeder 201 of the dry granulator.
[0047] The fixing plate 113 and the locking plate 116 are adopted in the embodiment to realize the screw bolt fixation mode, which is more convenient to disassemble and assemble in the use process and is more convenient to reform on the existing dry granulator.
[0048] The preferred embodiments of the utility model are described above, and it should be noted that, for ordinary skilled persons in the technical field, some improvements and replacements can be made without departing from the technical principles of the utility model, and the improvements and replacements should also be regarded as the protection range of the utility model.
Claims
1. A slant feeding aid for a dry granulator, characterized in that: It includes motor, transmission seat, feeding screw, conveying pipeline, hopper and mounting seat, the motor is installed on the transmission seat, the transmission seat is installed on the upper end of the conveying pipeline, the feeding screw is coaxially sleeved in the conveying pipeline, the upper end is fixedly connected with the motor output shaft through the shaft coupling, the conveying pipeline axis and the horizontal screw feeder axis of the dry granulator form an angle of 35-55°, the hopper is vertically arranged in the middle of the conveying pipeline, the upper end is provided with a feeding flange, the lower end is provided with a discharge port, the discharge port is communicated with the conveying pipeline, the lower end of the conveying pipeline is connected with an equal-diameter elbow, the lower end of the equal-diameter elbow is fixedly connected with the mounting seat, the lower end of the feeding screw extends into the upper end port of the equal-diameter elbow, and the mounting seat is fixedly connected with the upper end feeding port of the horizontal screw feeder of the dry granulator.
2. A slanted feeding aid for a dry granulator according to claim 1, characterized in that: The width of the side surface of the hopper is large at the top and small at the bottom, and the front side surface of the hopper extends upward and forward at an angle α of 30° or less with the vertical surface.
3. A slanted feeding aid for a dry granulator according to claim 1, characterized in that: The motor is a brushless variable frequency speed regulation motor, and the motor controller of the motor is installed on or built in the rack of the dry granulator, and is used for controlling the start, speed and rotation direction of the motor.
4. A slanted feeding aid for a dry granulator according to claim 1, characterized in that It also includes a quick connector and a clamp, the lower end surface of the transmission seat is attached to the upper end surface of the quick connector, the lower end of the quick connector is a cylindrical connector, and the upper end is provided with a first flange extending outward, the upper and lower end ports of the transmission seat are provided with second flanges extending outward, the upper end second flange is fixedly connected with the motor, and the lower end second flange is connected with the first flange, and the clamp is sleeved outside the first flange and the second flange to fixedly connect the transmission seat and the quick connector.
5. A slanted feeding aid for a dry granulator according to claim 1, characterized in that Two rolling bearings are arranged between the inner side wall of the transmission seat hole and the outer side surface of the shaft coupling.
6. A slanted feeding aid for a dry granulator according to claim 1, characterized in that It also includes a vibrator arranged on the outer side wall of the hopper, which provides continuous vibration force to the hopper to prevent material bridging and cavity phenomenon.
7. A slanted feeding aid for a dry granulator according to claim 1, characterized in that It also includes a breather for use with a vacuum feeder to realize automatic feeding of the vacuum feeder.
8. A slanted feeding aid for a dry granulator according to claim 1, characterized in that The motor is a servo motor, and the rotation speed of the servo motor and the rotation speed of the horizontal screw feeder of the dry granulator are interlocked to realize self-adaptive adjustment of the motor rotation speed.
9. A slanted feeding aid for a dry granulator according to claim 1, characterized in that: A locking plate is arranged on the rear side wall of the hopper to fixedly connect the hopper to the rack of the dry granulator.
10. A slanted feeding aid for a dry granulator according to claim 1, characterized in that: A fixing plate is arranged on the front side of the mounting seat to fixedly connect with the outer shell of the horizontal screw feeder of the dry granulator.