Dry-method double-screw conveyor
By placing the power transmission unit outside the hopper in the dry twin-screw conveyor and adopting a split bearing structure and sealing design, the wear problem caused by material entering the bearing chamber is solved, thus achieving stable operation of the equipment and extending its service life.
Patent Information
- Application Number
- CN202422145043.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-09-02
AI Technical Summary
During operation, the fine particle size and high viscosity of the powdered product in the existing dry twin-screw conveyor cause the material to enter the bearing chamber along the connection between the bearing housing and the silo wall. The grease mixes with the material and cannot provide lubrication, resulting in severe wear on the bearings and shaft ends, which affects the normal operation of the equipment.
The power transmission unit is located outside the silo and includes a bearing housing base, a bearing housing, and a transmission connecting rod. The bearing housing is sleeved on the transmission connecting rod, and the bearing housing base is used to support the bearing housing and prevent the bearing from contacting the material. A sealing cover and annular sealing part are used to restrict the outflow of material. The bearing housing and the silo are set separately, and a protective cover and observation window are provided to improve the reliability of the equipment.
It effectively avoids wear on bearings and shaft ends, ensures normal equipment operation, reduces failure rate, and improves equipment lifespan and reliability.
Smart Images
Figure CN223444723U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of mechanical feeding, in particular to a dry double helix conveyor. BACKGROUND
[0002] The dry double helix conveyor is provided with two solid helixes in the material conveying pipe, one of which rotates left and the other rotates right. When working, the two helixes rotate through a pair of gears at the shaft head position, and due to the rotation of the helix body, the material in the pipe moves axially, thereby achieving the purpose of conveying. At the same time, the double helix structure can make the material with high viscosity extrude and cut each other, avoiding the material sticking to the helix and being unable to move. The dry double helix feeding equipment for fine powder is used for conveying the wet material in the pipe to the drying equipment. The bearing seat of the helix equipment is installed on the wall of the wet material bin, and the wet material bin is used as the basis for fixing the bearing seat, for supporting the helix shaft during fixing and rotation. However, the existing bearing seat is directly connected with the wet material bin. Since the particle size of the fine powder product is small and the viscosity of the material is high, during the operation of the dry double helix, the material will enter the bearing chamber through the connection position of the shaft head and the bearing seat along the wall due to extrusion and agitation. After the lubricating grease in the bearing mixes with the material, it can no longer play a lubricating role, causing serious wear of the bearing and the shaft head, affecting the normal operation of the equipment, and the problem of the equipment needs to be solved urgently. CONTENT OF THE UTILITY MODEL
[0003] The present disclosure aims to at least solve one of the technical problems existing in the prior art or related art.
[0004] To this end, the present disclosure provides a dry double helix conveyor, which comprises a material bin, a double helix conveying mechanism and a power mechanism. The double helix conveying mechanism comprises a helix conveying part and a power conveying part. The helix conveying part is arranged in the material bin, the power conveying part is connected with the power mechanism, and the power mechanism is used to provide the force for the helix conveying mechanism to convey the material. In addition, the power conveying part is arranged outside the material bin, and the power conveying part comprises a bearing seat foundation, a bearing seat and a transmission connecting rod. One end of the transmission connecting rod is connected with the helix conveying part, and the opposite end is connected with the power mechanism. The bearing seat is sleeved on the transmission connecting rod, and the bearing seat foundation is used to support the bearing seat.
[0005] The power conveying part is arranged outside the material bin, and the power conveying part comprises a bearing seat foundation, a bearing seat and a transmission connecting rod. One end of the transmission connecting rod is connected with the helix conveying part, and the opposite end is connected with the power mechanism. The bearing seat is sleeved on the transmission connecting rod, and the bearing seat foundation is used to support the bearing seat.
[0006] In a feasible implementation, the material bin has a mounting port, the connecting rod of the helix conveying part is connected with the transmission connecting rod through the mounting port, and a sealing cover is arranged at the mounting port. The sealing cover is used to limit the material from flowing out of the mounting port.
[0007] In an embodiment, the sealing cover is arranged on the connecting rod or the transmission connecting rod, and the sealing cover is provided with an annular sealing part which is arranged between the connecting rod and the inner wall of the mounting hole.
[0008] In an embodiment, the annular sealing part is further provided with a sealing element which is uniformly arranged along the circumference of the annular sealing part.
[0009] In an embodiment, the bearing seat base is arranged in a telescopic structure.
[0010] In an embodiment, the bearing seat base is detachably connected with the bearing seat.
[0011] In an embodiment, the power mechanism comprises a power motor, a speed reducer and a shaft coupling, the power motor is connected with the speed reducer, one end of the shaft coupling is connected with the output shaft of the speed reducer, and the opposite end is connected with the transmission connecting rod.
[0012] In an embodiment, the bearing seat is arranged apart from the material bin.
[0013] In an embodiment, the bearing seat is provided with a protective cover which covers the bearing seat.
[0014] In an embodiment, the side wall of the material bin is provided with an observation window.
[0015] Compared with the prior art, the present disclosure has at least the following beneficial effects: the material bin, the double helix conveying mechanism and the power mechanism constitute a dry double helix conveyor, the helix conveying part is arranged in the material bin, the power conveying part is connected with the power mechanism, the power mechanism is used for providing the force for the helix conveying mechanism to convey the material, the power conveying part of the present disclosure is arranged outside the material bin, thereby avoiding contact with the material in the material bin, wherein the power conveying part comprises a bearing seat base, a bearing seat and a transmission connecting rod, one end of the transmission connecting rod is connected with the helix conveying part, the opposite end is connected with the power mechanism, the bearing seat is sleeved on the transmission connecting rod, and the bearing seat base is used for supporting the bearing seat, so that the grease in the bearing cannot be mixed with the material, thereby avoiding serious wear of the bearing and the shaft head and affecting the normal operation of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0016] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present disclosure and together with the description serve to explain the principles of the present disclosure.
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.
[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the exemplary embodiments. The accompanying drawings are merely illustrative and are not considered to be limiting upon the present application. Furthermore, like reference numerals denote like parts throughout the drawings. In the drawings:
[0019] Figure 1 The side view structure schematic diagram of the present disclosure.
[0020] wherein, Figure 1 The correspondence between the reference signs and the component names in the drawings is as follows: 1 - silo; 2 - spiral conveying part; 3 - bearing seat base; 4 - bearing seat; 5 - transmission connecting rod; 6 - sealing cover; 7 - power motor; 8 - speed reducer; 9 - shaft coupling. DETAILED DESCRIPTION
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.
[0022] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some of the embodiments of the present disclosure, not all the embodiments.
[0023] At present, the dry method double screw conveyor is to install two solid screws in the conveying pipe, one of which is left-handed and the other is right-handed. When working, the two screws rotate through a pair of gears at the shaft head position. Due to the rotation of the screw body, the material in the pipe moves axially, thereby achieving the purpose of conveying. At the same time, the double screw structure can make the material with high viscosity extrude and cut each other, avoiding the material sticking to the screw and unable to move. The dry method double screw feeding equipment for micro-powder is used for conveying the wet material in the pipe to the drying equipment. The bearing seat of the screw equipment is installed on the wall of the wet material bin, which is used as the basis for fixing the bearing seat, for the fixation and support of the screw shaft during rotation. However, the existing bearing seat is directly connected with the wet material bin. Since the particle size of the micro-powder product is fine and the material viscosity is high, during the operation of the dry method double screw, the material will enter the bearing chamber through the connection position of the bin wall and the bearing seat along the shaft head due to extrusion and agitation. The lubricating grease in the bearing cannot play a lubricating role after mixing with the material, causing serious wear of the bearing and the shaft head, affecting the normal operation of the equipment, and the problem needs to be solved urgently.
[0024] Based on this, the dry method double screw conveyor is provided. The bin, the double screw conveying mechanism and the power mechanism of the present disclosure constitute the dry method double screw conveyor. The screw conveying part is arranged in the bin. The power conveying part is connected with the power mechanism. The power mechanism is used to provide the force for the screw conveying mechanism to convey the material. The power conveying part of the present disclosure is arranged outside the bin, thereby avoiding contact with the material in the bin. The power conveying part includes a bearing seat base, a bearing seat and a transmission connecting rod. One end of the transmission connecting rod is connected with the screw conveying part. The opposite end is connected with the power mechanism. The bearing seat is sleeved on the transmission connecting rod. The bearing seat base is used to support the bearing seat. In this way, the lubricating grease in the bearing will not mix with the material, avoiding serious wear of the bearing and the shaft head, and affecting the normal operation of the equipment.
[0025] The dry method double screw conveyor will be described in detail through specific embodiments as follows:
[0026] Referring to Figure 1 The dry method double screw conveyor is provided. The bin, the double screw conveying mechanism and the power mechanism of the present disclosure constitute the dry method double screw conveyor. The screw conveying part is arranged in the bin. The power conveying part is connected with the power mechanism. The power mechanism is used to provide the force for the screw conveying mechanism to convey the material. The power conveying part of the present disclosure is arranged outside the bin, thereby avoiding contact with the material in the bin. The power conveying part includes a bearing seat base, a bearing seat and a transmission connecting rod. One end of the transmission connecting rod is connected with the screw conveying part. The opposite end is connected with the power mechanism. The bearing seat is sleeved on the transmission connecting rod. The bearing seat base is used to support the bearing seat.
[0027] The bin 1, double helix conveying mechanism and power mechanism of the present disclosure constitute a dry double helix conveying machine, wherein the double helix conveying mechanism is a conventional setting of the prior art which is not described here, and the power mechanism can select a driving device such as a driving motor and an engine. The present disclosure specifically selects a driving motor.
[0028] The helix conveying part 2 of the present disclosure is arranged in the bin, wherein the power conveying part is connected with the power mechanism, and the power mechanism is used to provide the force for the helix conveying mechanism to convey the material. The power conveying part of the double helix conveying mechanism of the present disclosure is arranged outside the bin, thereby avoiding contact with the material in the bin. The power conveying part includes a bearing seat base 3, a bearing seat 4 and a transmission connecting rod 5. One end of the transmission connecting rod 5 is connected with the helix conveying part 2, and the opposite end is connected with the power mechanism. The bearing seat 4 is sleeved on the transmission connecting rod 5. Because the bearing seat 4 is arranged in a split form with the bin, the bearing seat 4 needs to be supported by the bearing seat base 3. In this way, the lubricating grease in the split bearing seat will not mix with the material in the bin 1, thereby avoiding serious wear of the bearing and shaft head and affecting the normal operation of the equipment.
[0029] In some embodiments, the bin 1 has a mounting port, the connecting rod of the helix conveying part 2 passes through the mounting port and is connected with the transmission connecting rod 5, and a sealing cover 6 is arranged at the mounting port. The sealing cover 6 is used to limit the material from flowing out of the mounting port.
[0030] In this embodiment, the connecting rod of the helix conveying part 2 passes through the mounting port on the sidewall of the bin 1 and is connected with the transmission connecting rod 5, thereby simplifying the parts of the equipment and reducing the failure rate. However, the sealing of the mounting port is not strict. To solve this problem, a sealing cover 6 is arranged at the mounting port. The sealing cover 6 is used to limit the material from flowing out of the mounting port. The sealing cover can be a circular cover plate cover arranged in this range, or can be like a flange and a flange short section, a short section is sleeved on the connecting rod of the helix conveying part 2 and is embedded in the mounting port to seal the mounting port. Further, the sealing cover 6 is sleeved on the connecting rod or the transmission connecting rod 5. The sealing cover 6 is provided with an annular sealing part which is embedded between the inner wall of the connecting rod and the mounting port, thereby better increasing the sealing effect.
[0031] In some embodiments, the annular sealing part is further provided with a sealing element, which is uniformly arranged along the circumference of the annular sealing part. The sealing element in this embodiment can be selected from an O-shaped sealing ring or a sealing gasket. The O-shaped sealing ring is a rubber sealing ring with a circular cross-section. Due to its O-shaped cross-section, it is called an O-shaped rubber sealing ring. The O-shaped ring specifications mainly include UHS O-shaped ring specifications, UHP O-shaped ring specifications, UN O-shaped ring specifications, DH O-shaped ring specifications, piston rod O-shaped ring, high-temperature-resistant O-shaped ring, high-pressure-resistant O-shaped ring, corrosion-resistant O-shaped ring, and wear-resistant O-shaped ring. The present disclosure specifically selects a piston rod O-shaped ring. This standard is applicable to YX type sealing rings when the working pressure of the oil cylinder is greater than 16 MPa, or when the oil cylinder is subjected to eccentric force, to protect the sealing ring. The working temperature is -40 to +100 degrees.
[0032] In some embodiments, the bearing seat base 3 is provided in a telescopic structure. In this embodiment, the bearing seat base 3 is provided in a telescopic structure, such as a telescopic rod, a telescopic cylinder, a telescopic oil cylinder, a multi-short-time clamping rod, etc. The present disclosure specifically selects a telescopic rod. Through the arrangement of the telescopic structure, the present disclosure can adapt to various use environments, making the external bearing seat more adaptable. Further, the bearing seat base 3 is detachably connected with the bearing seat 4, so as to facilitate maintenance and replacement of different types of bearing seat bases 3.
[0033] In some embodiments, the power mechanism includes a power motor 7, a speed reducer 8, and a shaft coupling 9. The power motor 7 is connected with the speed reducer 8. One end of the shaft coupling 9 is connected with the output shaft of the speed reducer 8, and the opposite end is connected with the transmission connecting rod 5. The speed reducer 8 is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing, which is used as a speed reduction transmission device between a prime mover and a working machine. It matches the speed and transmits the torque between the prime mover and the working machine or the actuator. The speed reducer 8 reduces the speed while increasing the output torque. The torque output ratio is proportional to the motor output multiplied by the speed reduction ratio, but attention should be paid not to exceed the rated torque of the speed reducer. The shaft coupling 9 is a device that connects two shafts or a shaft and a rotating part, rotates together during the transmission of motion and power, and does not separate under normal circumstances. Sometimes it is also used as a safety device to prevent the connected parts from bearing excessive load, and plays a role in overload protection.
[0034] In some embodiments, the bearing seat 4 is spaced apart from the silo 1. In this embodiment, in order to prevent the material in the silo 1 from entering the bearing seat 4, the bearing seat 4 is spaced apart from the silo 1 by a certain distance to prevent the material from splashing.
[0035] In some embodiments, the bearing seat 4 is provided with a protective cover, which is covered on the bearing seat 4. In this embodiment, because the bearing seat 4 is arranged from the original silo 1 to the outside, there will be dust or dust outside the factory site, in order to improve the service life of the bearing, the protective cover is arranged on the bearing seat 4. The shape of the protective cover is arranged according to the shape of the bearing seat 4, and the connection mode can be buckling, screwing and the like.
[0036] In some embodiments, an observation window is arranged on the side wall of the silo 1. In this embodiment, an observation window is arranged on the side wall of the silo 1, through which the material flow and flow guiding state inside the silo 1 can be observed, so as to adjust the torsion of the power mechanism.
[0037] In the present disclosure, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.
[0038] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, cannot be understood as a limitation on the present disclosure.
[0039] In the description of the present disclosure, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0040] The above is only the preferred embodiment of the present disclosure, and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A dry double screw conveyor, characterized in that: It includes a silo, a double-screw conveying mechanism and a power mechanism. The double-screw conveying mechanism includes a screw conveying part and a power conveying part. The screw conveying part is arranged in the silo. The power conveying part is connected to the power mechanism. The power mechanism is used to provide the screw conveying mechanism with a force to convey materials, wherein: The power delivery part is arranged outside the silo, and the power delivery part includes a bearing seat base, a bearing seat and a transmission connecting rod. One end of the transmission connecting rod is connected to the spiral conveying part, and the other end is connected to the power mechanism. The bearing seat is sleeved on the transmission connecting rod, and the bearing seat base is used to support the bearing seat.
2. The dry double-screw conveyor according to claim 1, characterized in that: The silo has an installation opening, the connecting rod of the spiral conveying part passes through the installation opening and is connected to the transmission connecting rod, and a sealing cover is provided at the installation opening, and the sealing cover is used to limit the material from flowing out of the installation opening.
3. The dry double-screw conveyor according to claim 2, characterized in that: The sealing cover is sleeved on the connecting rod or the transmission connecting rod. The sealing cover is provided with an annular sealing portion, and the annular sealing portion is embedded between the connecting rod and the inner wall of the installation opening.
4. The dry double-screw conveyor according to claim 3, characterized in that: The annular sealing portion is further provided with a sealing member, and the sealing member is evenly arranged along the circumference of the annular sealing portion.
5. The dry double-screw conveyor according to claim 1, characterized in that: The bearing seat base is configured as a telescopic structure.
6. The dry process double screw conveyor according to claim 1, characterized in that: The bearing seat base is detachably connected to the bearing seat.
7. The dry double-screw conveyor according to claim 1, characterized in that: The power mechanism includes a power motor, a reducer and a coupling. The power motor is connected to the reducer. One end of the coupling is connected to the output shaft of the reducer, and the other end is connected to the transmission connecting rod.
8. The dry process double screw conveyor according to claim 1, characterized in that: The bearing seat and the silo are spaced apart.
9. The dry process double screw conveyor according to any one of claims 1 to 8, characterized in that: The bearing seat is provided with a protective cover, and the protective cover is arranged on the bearing seat.
10. The dry double-screw conveyor according to claim 1, characterized in that: An observation window is provided on the side wall of the silo.