Feeding screw conveyor

Abstract

The utility model relates to a feeding spiral conveyor which comprises a feeding spiral cylinder, a spiral conveying assembly, a driving motor, a speed reducer, a coupler and a bearing assembly. Wherein the spiral conveying assembly is arranged in the feeding spiral cylinder and comprises a transmission part and a spiral part which are connected with each other; the driving motor is arranged at one end of the feeding spiral cylinder; the speed reducer is mounted on a power output shaft of the driving motor; one end of the coupler is in transmission connection with the reducer; the bearing assembly comprises a bearing seat and a self-aligning roller bearing; the bearing seat is arranged between the feeding spiral cylinder and the coupler, and the self-aligning roller bearing is fixed on the bearing seat; a transmission part of the spiral conveying assembly penetrates through the self-aligning roller bearing to be in transmission connection with the coupler. According to the shaftless screw conveyor, the shaftless screw blade is used, materials are prevented from being stuck to the screw shaft when viscous materials are conveyed, meanwhile, the self-aligning roller bearing of the adapter sleeve is installed on the bearing seat at the driving end to adjust vibration loads generated when the materials are conveyed in a shaftless screw mode, and the material conveying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to material transportation technical field, especially relate to a feeding screw conveyor. BACKGROUND

[0002] Screw conveyor and drum dryer are important equipment for conveying and drying materials in solid waste treatment field, wherein, screw conveyor not only bears the function of conveying coal slime and other materials, but also must have the ability of sealing materials and conveying waste gas.

[0003] Screw conveyor is divided into shaft screw conveyor and shaftless screw conveyor in conveying form. Among them, although shaft screw conveyor has the advantage of stable operation, when conveying wet coal slime and other viscous materials, materials are easy to stick on the screw shaft, which affects the conveying efficiency, and since the bearing of the discharge end of the shaft screw conveyor is usually located inside the dryer cylinder, the materials stuck on the screw shaft are also difficult to clean.

[0004] Therefore, shaftless screw conveyor is usually used when conveying wet coal slime and other viscous materials. However, the existing shaftless screw conveyor solves the problem of viscous material feeding, but it still has some defects, for example, since the shaftless screw conveyor has no main shaft design, and the blade is only single-sided supported, the blade in the shell will deviate from the center of the main shaft due to its own weight, which causes the blade to jump and produce vibration load during operation, and then the bearing is always subjected to changing impact force, which not only affects the efficiency and continuity of material conveying, but also affects the service life of the bearing. SUMMARY

[0005] The utility model aims at solving one of the above technical problems, providing a kind of feeding screw conveyor, the self-aligning roller bearing of tight sleeve is installed on the bearing seat of drive end, the impact force of vibration load generated in the process of conveying material of shaftless screw is relieved, and the efficiency and continuity of material conveying are ensured.

[0006] To achieve the above object, the utility model adopts the technical scheme that:

[0007] A kind of feeding screw conveyor, comprising:

[0008] Feeding spiral cylinder,

[0009] Screw conveying assembly, it is set up in feeding spiral cylinder, including the transmission part and spiral part being connected with each other;

[0010] Drive motor, it is set up in one end of feeding spiral cylinder,

[0011] Speed reducer, it is installed on the power output shaft of drive motor;

[0012] Coupling, its one end is connected with speed reducer transmission;

[0013] The bearing assembly comprises a bearing seat and a self-aligning roller bearing; the bearing seat is arranged between the feeding screw cylinder and the shaft coupling, and the self-aligning roller bearing is fixed on the bearing seat.

[0014] The driving part of the screw conveying assembly is in driving connection with the shaft coupling through the self-aligning roller bearing.

[0015] In some embodiments of the utility model, the spiral part is a shaftless spiral blade.

[0016] In some embodiments of the utility model, the thickness of the shaftless spiral blade is 20-30 mm.

[0017] In some embodiments of the utility model, the end part of the spiral part away from the driving motor extends to the outside of the feeding screw cylinder.

[0018] In some embodiments of the utility model, the self-aligning roller bearing comprises an outer ring, an inner ring, a retainer and a roller;

[0019] The inner ring and the outer ring are symmetrically arranged, the roller is arranged in a roller track formed between the inner ring and the outer ring, and is retracted and limited by the retainer;

[0020] In some embodiments of the utility model, the self-aligning roller bearing further comprises a tight sleeve, the outer diameter of the tight sleeve is tapered, and the inner ring is tightly sleeved on the tapered tight sleeve.

[0021] In some embodiments of the utility model, a sealing assembly is further included, and the driving part of the screw conveying assembly is in driving connection with the shaft coupling through the sealing assembly and the self-aligning roller bearing in sequence.

[0022] The sealing assembly comprises an end cover and a packing box.

[0023] The end cover is fixed to the end part of the feeding screw cylinder close to the driving motor.

[0024] The packing box is fixedly connected with the end cover and is in sliding cooperation with the driving part; a packing is arranged in the packing box, and the packing is wound on the driving part.

[0025] In some embodiments of the utility model, a sealing cylinder is further included.

[0026] The sealing cylinder is sleeved on the outside of the feeding screw cylinder, and an annular gap is formed between the sealing cylinder and the feeding screw cylinder; the end part of the sealing cylinder close to the driving motor is connected with the feeding screw cylinder.

[0027] In some embodiments of the utility model, an anti-abrasion pad layer is arranged on the inner wall of the feeding screw cylinder.

[0028] In some embodiments of the utility model, a feeding port is formed in the end of the feeding screw cylinder close to the driving motor.

[0029] The utility model discloses a beneficial effect lies in:

[0030] 1, the utility model provides a feed screw conveyor, installs the self -aligning roller bearing of tight bushing on the bearing seat of drive end, alleviates the impact force of the vibration load produced in the shaftless spiral conveying material process to bearing, guarantees the efficiency and coherence of material conveying.

[0031] 2, the utility model provides a feed screw conveyor uses shaftless spiral blade to convey material, can effectively avoid the sticky material such as wet coal slime and stick on the spiral shaft, further guarantees the efficiency of material conveying. DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiment of the application or prior art, specific embodiments of the utility model will be described in detail below, and other drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying.

[0033] Figure 1 It is the structural schematic diagram of feed screw conveyor;

[0034] Figure 2 It is the structural schematic diagram of spiral conveying assembly;

[0035] Figure 3 It is the structural schematic diagram of bearing assembly;

[0036] Figure 4 It is Figure 3 the sectional view of B-B of

[0037] Figure 5 It is Figure 1 the enlarged structural schematic diagram of A part in

[0038] Figure 6 It is the structural schematic diagram of feed screw conveyor and drum dryer;

[0039] Among them, the sign is:

[0040] 1, feed screw cylinder;11, feed inlet;2, spiral conveying assembly;21, spiral part;22, transmission part;3, drive motor;4, speed reducer;5, shaft coupling;6, bearing assembly;61, bearing seat;62, self-aligning roller bearing;621, outer ring;622, inner ring;623, roller;624, retainer;63, tight bushing;7, sealing assembly;71, end cover;72, packing box, 73, packing, 74, gland;8, sealing cylinder;9, drum dryer. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained in the following with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0042] Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those of ordinary skill in the art, the present application can also be applied to other similar scenarios without creative labor on the basis of these drawings.

[0043] The terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0044] Unless otherwise defined, the technical terms or scientific terms involved in the present application should be understood as the usual meaning by those of ordinary skill in the art to which the present application belongs. The "one", "a", "an" and similar words involved in the present application do not represent quantity limitation, which can represent singular or plural. The terms "include", "contain", "have" and any variations thereof involved in the present application are intended to cover non-exclusive inclusion.

[0045] In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] The technical scheme of the present application is described in detail in combination with specific embodiments and the drawings of the specification.

[0047] As shown in the drawings, Figure 1 - the drawings Figure 6 As shown in the drawings,

[0048] The driving motor 3 is arranged at one end of the feeding screw cylinder 11.

[0049] The feeding screw cylinder 11 comprises a feeding end and a discharging end. The feeding end is an end of the feeding screw cylinder 11 axially close to the driving motor 3, and an opening upward feeding port 11 is formed in the cylinder wall of the feeding end. The edge of the feeding port 11 is provided with a shell to guide and limit the material entering the cylinder wall through the feeding port 11. The discharging end is an end of the feeding screw cylinder 11 axially away from the driving motor 3, and the discharging end extends into the inner cavity of the drum dryer 9 through the feeding port 11 of the drum dryer 9.

[0050] The spiral conveying assembly 2 comprises a transmission part 22 and a spiral part 21. The spiral part 21 is provided with a shaftless spiral blade in the feeding screw cylinder 11. The transmission part is in a cylindrical structure and is connected to one end of the shaftless spiral blade.

[0051] The speed reducer 4 is installed on the power output shaft of the driving motor 3 to reduce the high-speed operation of the motor output to the required low speed to meet the rotation speed requirement of the shaftless spiral blade.

[0052] One end of the shaft coupling 5 is in transmission connection with the speed reducer 4.

[0053] The bearing assembly 6 comprises a bearing seat 61 and a self-aligning roller bearing 62. The bearing seat 61 is arranged between the feeding screw cylinder 11 and the shaft coupling 5, the self-aligning roller bearing 62 is fixed on the bearing seat 61, and the transmission part 22 of the spiral conveying assembly 2 is in transmission connection with the shaft coupling 5 through the self-aligning roller bearing 62.

[0054] In the above-mentioned schematic embodiment, the transmission part 22 of the spiral conveying assembly 2 is in transmission connection with the shaft coupling 5 through the self-aligning roller bearing 62. By means of the automatic self-aligning function of the self-aligning roller bearing 62, the transmission shaft can be self-centered within a certain range to buffer the vibration load generated during the conveying of the shaftless spiral blade, and the radial deviation and inclination of the shaftless spiral blade can be adjusted to ensure the efficiency and continuity of the conveying of the wet coal sludge and other viscous materials.

[0055] In order to prevent the shaftless spiral blade of the spiral part 21 from being deformed due to excessive conveying resistance, as shown in some embodiments of the utility model, a wear-resistant steel blade with large thickness is used, and the thickness of the shaftless spiral blade is 20mm-30mm. Figure 2

[0056] In order to avoid the material from being accumulated at the outlet end of the feeding screw cylinder 11, in some embodiments of the utility model, the end of the spiral part 21 away from the driving motor 3 extends to the outside of the feeding screw cylinder 11.

[0057] In order to bear the vibration load generated during the conveying of the shaftless spiral blade, in some embodiments of the utility model, as shown in Figures 3-4 ​As shown, the self-aligning roller bearing 62 comprises an outer ring 621, an inner ring 622, a retainer 624 and two rows of rollers 623. Among them, the inner ring 622 is symmetrically arranged with the outer ring 621, and the two rows of rollers 623 are arranged in the roller tracks formed between the inner ring 622 and the outer ring 621, and are retracted and limited by the retainer 624. Among them, the two rows of rollers are used to bear radial load, and can also bear a small amount of axial load in any direction.

[0058] In order to make the self-aligning roller bearing 62 more firmly installed, some embodiments of the utility model further comprise a tight sleeve 63, the outer diameter of the tight sleeve 63 is tapered, and the inner ring 622 is tightly sleeved on the tapered tight sleeve 63.

[0059] In order to avoid material leakage of the driving end, some embodiments of the utility model, as shown in Figure 5 Further comprising a sealing assembly 7, the transmission part 22 of the screw conveying assembly 2 is in driving connection with the shaft coupling 5 in sequence through the sealing assembly 7 and the self-aligning roller bearing 62.

[0060] The sealing assembly 7 comprises an end cover 71, a packing box 72 and a gland 74. Among them, the end cover 71 is fixed to the end of the feeding screw cylinder 11 close to the driving motor 3. The packing box 72 is fixedly connected with the end cover 71, the transmission member extends to the outside of the feeding screw cylinder 11 in sequence through the end cover 71 and the packing box 72, and is in sliding fit with the end cover 71 and the packing box 72. The packing box 72 is provided with a packing 73, the packing 73 is wound on the transmission member, and the gland 74 is connected with the packing box 72 through bolts. The pre-tightening force generated by the gland 74 forces the packing 73 to be pressed on the sealing surface, thereby achieving the sealing effect.

[0061] In order to realize the sealing between the feeding screw cylinder 11 and the drum dryer 9, and at the same time provide an exhaust passage for the drum dryer 9, some embodiments of the utility model, as shown in Figure 1 And Figure 6 Further comprising a sealing cylinder 8. The sealing cylinder 8 is sleeved on the outside of the discharging end of the feeding screw cylinder 11, and forms an annular gap with the feeding screw cylinder 11. The annular gap is communicated with the external exhaust pipeline as the exhaust passage of the drum dryer 9. The end close to the driving motor 3 of the sealing cylinder 8 is connected with the feeding screw cylinder 11, and the end close to the drum dryer 9 is connected with the feeding port 11 of the drum dryer 9.

[0062] In order to avoid the shaftless spiral blade from jumping back and forth in the feeding screw cylinder 11 and rubbing against the cylinder wall, causing wear of the cylinder wall and affecting the service life of the feeding screw cylinder 11, some embodiments of the utility model, the inner wall of the feeding screw cylinder 11 is provided with a wear-resistant pad layer composed of ball mill cast iron, ultra-high molecular polyethylene plate and other wear-resistant materials.

[0063] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0064] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A feed screw conveyor, characterized in that, The utility model relates to a feeding screw cylinder, a screw conveying assembly arranged in the feeding screw cylinder, a driving motor arranged at one end of the feeding screw cylinder, a speed reducer mounted on a power output shaft of the driving motor, a shaft coupling, a bearing assembly including a bearing seat and a self-aligning roller bearing, the bearing seat being arranged between the feeding screw cylinder and the shaft coupling, the self-aligning roller bearing being fixed on the bearing seat, the driving part of the screw conveying assembly penetrating through the self-aligning roller bearing and being in driving connection with the shaft coupling, the screw part being a shaftless spiral blade, the thickness of the shaftless spiral blade being 20-30 mm, the screw part extending to the outside of the feeding screw cylinder away from the end of the driving motor, the self-aligning roller bearing including an outer ring, an inner ring, a retainer and rollers, the inner ring being symmetrically arranged with the outer ring, the rollers being arranged in a roller track formed between the inner ring and the outer ring and being retracted and positioned by the retainer, the self-aligning roller bearing further including a tight sleeve, the outer diameter of the tight sleeve being tapered, the inner ring being tightly sleeved on the tapered tight sleeve, a sealing assembly further being included, the driving part of the screw conveying assembly penetrating through the sealing assembly and the self-aligning roller bearing in sequence and being in driving connection with the shaft coupling, the sealing assembly including an end cover and a packing box, the end cover being fixed on the end of the feeding screw cylinder close to the driving motor, the packing box being fixedly connected with the end cover and being in sliding fit with the driving part, a packing being arranged in the packing box and being wound on the driving part, a sealing cylinder further being included, the sealing cylinder being sleeved on the outside of the feeding screw cylinder and forming an annular gap with the feeding screw cylinder, the sealing cylinder being connected with the feeding screw cylinder close to the end of the driving motor, an anti-wear pad layer being arranged on the inner wall of the feeding screw cylinder, a feeding port being formed on the end of the feeding screw cylinder close to the driving motor. ​ ​ ​ ​ ​ ​ ​ 2. The feed screw conveyor of claim 1, wherein, ​ 3. The feed screw conveyor of claim 2, wherein, ​ 4. A feed screw conveyor according to any one of claims 1-3, characterized in that ​ 5. The feed screw conveyor of claim 1, wherein, ​ ​ 6. The feed screw conveyor of claim 5, wherein, ​ 7. The feed screw conveyor of claim 1, wherein, ​ ​ ​ ​ 8. The feed screw conveyor of claim 1, wherein, ​ ​ 9. The feed screw conveyor of claim 1, wherein, ​ 10. The feed screw conveyor of claim 1, wherein, ​

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