CN116550251A - A kind of modified asphalt premixing kettle and using method thereof - Google Patents

Abstract

The invention discloses a modified asphalt premixing kettle and a use method thereof, the modified asphalt premixing kettle comprises a kettle body, a grinding unit, a stirring unit and a driving unit, wherein the inner cavity of the kettle body is communicated with a material inlet and a material outlet, the grinding unit comprises a grinding bowl, the first end of the grinding bowl is rotationally connected with the kettle body and can rotate positively and negatively under the action of the driving unit, a grinding channel communicated with the inner cavity of the kettle body is formed between the outer peripheral surface of the grinding bowl and the kettle body, the stirring unit comprises a stirring shaft and a cutter head, the cutter head is in a frame structure and comprises a plurality of cutter heads, the cutter head is sleeved outside the stirring shaft and rotationally connected with the stirring shaft, and the cutter head can spirally lift or descend around the stirring shaft under the action of the driving unit so as to crush and uniformly mix materials. The invention has reasonable structure, is favorable for fully and uniformly stirring, has multiple functions and is convenient to use.

Description

A kind of modified asphalt premixing kettle and using method thereof

technical field

The invention relates to the technical field of asphalt production and preparation, in particular to a modified asphalt premixing kettle and a use method thereof.

Background technique

Modified asphalt is widely used in national economic industries. Modified asphalt is the addition of external additives (modifiers) such as rubber, resin, high molecular polymer, ground rubber powder or other fillers, or taking measures such as mild oxidation of asphalt to make asphalt or asphalt mixture The performance of the asphalt binder can be improved. There are two mechanisms for modifying asphalt, one is to change the chemical composition of asphalt, and the other is to make the modifier evenly distributed in the asphalt to form a certain spatial network structure. Among them, whether the premixing of modified asphalt is uniform directly affects the performance of its finished product. The mixing equipment in the prior art usually rotates around the stirring shaft. Although it has the advantage of high efficiency, there are still up and down premixing. Insufficient stirring, low efficiency and other problems are not conducive to improving the effect of the finished product. In addition, when the asphalt particles are not uniform, additional grinding equipment is required, which has high cost and low efficiency.

Contents of the invention

The invention discloses a modified asphalt premixing kettle and its use method, which solves the technical problems of uneven and insufficient mixing of modified asphalt premixing, low efficiency and inconvenient use in the prior art, and has reasonable structure, favorable Fully uniform mixing, multi-functional and convenient to use technical effect. The adopted technical scheme is as follows:

A modified asphalt premixing kettle, including a kettle body, a grinding unit, a stirring unit and a driving unit, the inner cavity of the kettle body is connected with a material inlet and a material outlet, and the grinding unit includes a grinding bowl, and the grinding bowl The first end is rotatably connected with the kettle body and can rotate positively and negatively under the action of the driving unit, and a grinding channel connecting the inner cavity of the kettle body is formed between the outer peripheral surface of the grinding bowl and the kettle body, and the stirring unit includes a stirring shaft and a knife The cutter head has a frame structure and includes several cutter heads. The cutter head is sleeved outside the stirring shaft and connected to the stirring shaft in rotation. The cutter head can be spirally lifted or lowered around the stirring shaft under the action of the drive unit. , to crush and mix the material evenly.

On the basis of the above technical solution, the stirring shaft includes a lead screw and a lead screw slider matched with the lead screw, the lead screw is fixedly connected to the grinding bowl upwards, and the lead screw is rotatably connected to the bottom of the kettle body downward , the outer cover of the lead screw is provided with a sleeve, and the sleeve is fixedly connected with the kettle body downward, and the side wall of the sleeve shown is provided with an axially extended long hole, and one end of the lead screw slider passes through Through the long hole and slidably connected with the long hole up and down, the part of the screw slider protruding outside the sleeve supports the cutter head upwards, and the cutter head and the screw slider extend to the sleeve The outer part is rotationally connected, and the drive unit can transmit the rotary motion to the cutter head.

On the basis of the above technical solution, the number of the long holes is multiple and uniformly arranged circumferentially on the sleeve, and the corresponding position of the screw slider is provided with a plurality of shaft rods corresponding in number, so The shaft rod passes through the long hole and fits with the long hole in clearance.

On the basis of the above technical solution, the shaft rod is also fixedly connected with a retaining bar, which extends along the axial direction of the sleeve and can always cover the long hole.

On the basis of the above technical solution, it also includes a turntable arranged close to the upper part of the inner cavity of the kettle. The turntable is arranged horizontally and has several transmission rods fixed vertically downwards. The transmission rods pass through the cutter head downwards, and as shown The transmission rod is matched with the cutterhead clearance.

On the basis of the above technical solution, the turntable is sheathed outside the lead screw and is coaxial with the lead screw, and the lead screw is fixedly connected to the turntable, or the lead screw transmits the rotational motion to the turntable through a transmission mechanism.

On the basis of the above technical solution, the number of the long holes is multiple and uniformly arranged circumferentially on the sleeve, and the corresponding position of the screw slider is provided with a plurality of shaft rods corresponding in number, so The shaft passes through the long hole and fits in clearance with the long hole, the ends of a plurality of the shafts are connected by an annular disk, and the cutter head and the annular disk are rotationally connected by a thrust ball bearing.

On the basis of the above technical solution, the cutter head includes a plurality of circular rings arranged coaxially, the plurality of circular rings are connected by radially extending connecting rods, and the plurality of circular rings are evenly arranged in the circumferential direction There are several cutter heads, and the outer peripheral surface of the outermost ring is provided with bristles, and the ends of the bristles are in contact with the inner wall surface of the kettle to avoid material adhesion.

On the basis of the above technical solution, the width of the grinding channel gradually decreases from top to bottom, and the inner wall of the kettle forming the grinding channel faces upwards and extends outwards to form a storage chamber, which is respectively connected to the material inlet. It communicates with the grinding channel, and the material outlet is located at the lower part of the kettle body.

A method for using a modified asphalt premixing kettle, using the modified asphalt premixing kettle as described above, comprising the steps of:

1) The drive unit transmits the rotational motion to the grinding bowl, and the material enters the inner cavity of the kettle through the grinding channel, and at the same time, the drive unit drives the cutter head to move up and down;

2) The drive unit drives the turntable at the same time, or the drive unit drives the turntable to rotate after the material in the kettle reaches the set volume;

3) After the premixing is completed, the material is discharged through the material outlet.

Beneficial effect

The invention has a reasonable structure, and when the particle size of the input material is too large, the material is ground and enters the inner cavity of the kettle, has multiple functions, wide application range, is beneficial to simplify the premixing equipment, and is more convenient to operate and use. At the same time, under the action of the rotation of the grinding bowl, the material discharged from the grinding channel has centrifugal force. After entering the inner cavity of the kettle, the material is thrown to the wall surface of the kettle body and collides with the wall surface of the kettle body, which is conducive to further breaking up the material and dissolving the modifier. Mixed with asphalt base.

In the present invention, the lead screw and the grinding bowl rotate synchronously, and can drive the cutter head to slide up and down, so that the material in the kettle body can be turned up and down, which is beneficial to realize the uniform mixing of the upper layer and the lower layer of materials. It can prevent materials from entering the sleeve, which is beneficial to improve the service life of the lead screw. In addition, the cutterhead and the annular disk are rotationally connected by bearings, including the turntable. When the screw drives the turntable to rotate, the turntable can drive the cutterhead to rotate through multiple transmission rods. In this way, the cutterhead can rotate around the stirring shaft in a spiral manner, to a great extent. Ensure the uniformity and adequacy of premixing.

In the present invention, the cutter head includes a plurality of coaxial rings, and each ring is provided with a plurality of cutter heads in the circumferential direction, so that when the cutter head rotates in the kettle body, the material can be disturbed in a small range in many places, Further improve the uniformity and adequacy of premixing. In addition, the cutter head can be detachably connected with the ring, which is convenient for maintaining the cutter head. Wherein the outermost circular ring is provided with bristles, and the ends of the bristles are in contact with the wall surface of the kettle body to avoid material adhesion, which can realize self-cleaning and is more convenient to operate and use.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings that are required in the description of the embodiments or the prior art. Apparently, the drawings in the following description are only one embodiment of the present invention, and those skilled in the art can obtain other implementation attachments according to the provided drawings without creative work. picture.

Figure 1: Schematic diagram of the three-dimensional structure of the premix tank;

Figure 2: Schematic diagram of the three-dimensional structure of the cross-sectional view of the premixing tank;

Figure 3: Schematic diagram of the structure of the premix tank after removing the tank body;

Detailed ways

The following description and the accompanying drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the embodiments herein includes the full scope of the claims, and all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another element without requiring or implying any actual relationship or order between these elements. In fact the first element can also be called the second element and vice versa. Furthermore, the terms "comprising", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion such that a structure, means or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed elements, or also elements inherent in the structure, device or equipment. Without further limitations, an element defined by the phrase "comprising a" does not preclude the presence of additional identical elements in the structure, device or equipment comprising said element. Various embodiments herein are described in a progressive manner, each embodiment focuses on the differences from other embodiments, and the same and similar parts of the various embodiments may be referred to each other.

The terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this text and simplifying the description, rather than indicating or implying that the referred device or element must Having a particular orientation, being constructed and operating in a particular orientation, and therefore not to be construed as limiting the invention. In the description herein, unless otherwise stipulated and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a mechanical connection or an electrical connection, and it can also be the internal communication of two components, It may be directly connected or indirectly connected through an intermediary, and those skilled in the art can understand the specific meanings of the above terms according to specific situations.

Herein, unless otherwise stated, the term "plurality" means two or more.

In this article, the character "/" indicates that the preceding and following objects are an "or" relationship. For example, A/B means: A or B.

In this document, the term "and/or" is an associative relationship describing objects, which means that there may be three relationships. For example, A and/or B means: A or B, or, A and B, these three relationships.

A modified asphalt premixing kettle as shown in Figures 1 to 3, including a kettle body 1, a grinding unit, a stirring unit and a driving unit, the inner cavity of the kettle body 1 is connected with a material inlet 101 and a material outlet 102, and the material The inlet 101 is arranged at the upper part of the kettle body 1, and the material outlet 102 is arranged at the lower part of the kettle body 1. The drive unit includes a motor fixed to the outside of the kettle through a motor base.

As shown in Figures 2 and 3, the grinding unit includes a grinding bowl 2, the first end of the grinding bowl 2 is rotatably connected to the kettle body 1 and can be rotated positively and negatively under the action of the driving unit, and the grinding bowl 2 A grinding channel 11 connecting the inner cavity of the kettle body 1 is formed between the outer peripheral surface and the kettle body 1. Specifically, the kettle body 1 includes a top plate, the motor is fixed on the top plate through a motor seat, and the central axis of the grinding bowl 2 passes through the top plate. Bearing rotation connection, the material inlet 101 is set on the top plate, and the part close to the top plate is provided with a conical plate 9, the upper end and the lower end of the conical plate 9 extend outward respectively and are fixed to the inner wall of the kettle body 1, wherein the conical plate 9 The top is large and the bottom is small, and forms a grinding channel 11 with the outer peripheral surface of the grinding bowl 2, wherein the width of the grinding channel 11 becomes smaller from top to bottom, and the upper end of the conical plate 9 extends upwards and outwards to form a storage chamber 12, The material storage chamber 12 communicates with the material inlet 101 and the grinding channel 11 respectively. The setting of the material storage chamber 12 can facilitate the temporary storage of some materials and avoid continuous feeding.

As shown in Figure 3, the stirring unit includes a stirring shaft and a cutter head 6, and the stirring shaft includes a lead screw 3 and a lead screw slider 4 matched with the lead screw 3, and the lead screw 3 is fixed upwardly with the grinding bowl 2. Connected and rotated synchronously with the grinding bowl 2, which is conducive to simplifying the drive unit. The screw 3 is connected to the bottom of the kettle body 1 in a downward direction, and a sleeve 5 is provided on the outer cover of the screw 3, and the sleeve 5 is fixedly connected with the inner bottom surface of the kettle body 1 downward, and the sleeve 5 shown is The side wall is provided with an axially extended long hole, and one end of the screw slider 4 passes through the long hole and is slidably connected with the long hole up and down. The number of the long holes is multiple and in the sleeve 5 are evenly arranged in the circumferential direction, and the corresponding positions of the screw slider 4 are provided with a plurality of shaft rods corresponding to the number. The shaft rods pass through the long holes and fit with the long holes. A retaining strip 41 is connected, and the retaining strip 41 extends axially along the sleeve 5 and can always cover the long hole.

As shown in Figure 2, the part of the lead screw slider 4 protruding out of the sleeve 5 supports the cutterhead 6 upwards, specifically, the ends of a plurality of shaft rods are connected by an annular disk, and the cutterhead 6 It is rotatably connected with the annular disk through a thrust ball bearing, so that the cutter head 6 is rotatably connected with the shaft rod protruding from the screw slider 4 to the outside of the sleeve 5 , so that the drive unit can transmit the rotary motion to the cutter head 6 .

As shown in Figures 2 and 3, it also includes a turntable 7 arranged close to the upper part of the inner cavity of the kettle body 1. The turntable 7 is arranged horizontally and has a plurality of transmission rods 8 fixed vertically downward, and the transmission rods 8 pass through the warp knife downward. disc 6, and the transmission rod 8 shown in clearance fit with the cutter disc 6, the turntable 7 is sleeved outside the lead screw 3 and coaxial with the lead screw 3, the lead screw 3 and the turntable 7 are fixedly connected in this embodiment, Lead screw 3 and turntable 7 rotate synchronously. In other embodiments of the present invention, the screw 3 can transmit the rotary motion to the turntable 7 through a transmission mechanism, so that the cutter head 6 can rotate in a spiral manner to more fully and evenly mix the materials.

As shown in FIG. 3 , the cutter head 6 includes a plurality of circular rings 61 arranged coaxially, and the plurality of circular rings 61 are connected by connecting rods 62 extending radially. A plurality of cutter heads 63 are evenly arranged, wherein the cutter heads 63 can be detachably connected with the ring 61, so that it is convenient to replace and maintain the damaged cutter heads 63, which is conducive to improving the mixing effect and improving the service life of the cutter head 6. The outer peripheral surface of the outer ring 61 is provided with bristles, and the ends of the bristles are in contact with the inner wall surface of the kettle body 1 to avoid material adhesion and realize self-cleaning.

A method for using a modified asphalt premixing kettle, using the modified asphalt premixing kettle as described above, comprising the steps of:

1) The drive unit transmits the rotational motion to the grinding bowl 2, and the material enters the inner cavity of the kettle body 1 through the grinding channel 11. The grinding bowl 2 makes the material passing through the grinding channel 11 have centrifugal force, and the material enters the kettle body 1 and is connected with the kettle body 1. The collision of the wall surface is beneficial to further disperse the particle modifier or asphalt base material, and at the same time prevent the material entering the kettle body 1 from accumulating at the central axis, so that the stirring shaft can fully stir the material; Simultaneously, the leading screw 2 is driven to self-propagate, and the leading screw 2 drives the cutter head 6 to move up and down through the leading screw slide block 4 .

2) The drive unit drives the turntable 7 to rotate at the same time, and the turntable 7 further drives the cutter head 6 to rotate, so that the drive unit can drive the cutter head 6 to spirally rise or fall around the stirring shaft in the kettle body 2 to fully and evenly stir the materials;

3) After the premixing is completed, the material is discharged through the material outlet.

The present invention has been described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications made based on the present invention fall within the scope of protection of the present invention.

Claims (10)

1. A modified asphalt premixing kettle, characterized in that it comprises a kettle body (1), a grinding unit, a stirring unit and a driving unit, and the inner cavity of the kettle body (1) is connected with a material inlet (101) and a material Outlet (102), the grinding unit includes a grinding bowl (2), the first end of the grinding bowl (2) is rotatably connected to the kettle body (1) and can be rotated positively and negatively under the action of the driving unit, and the grinding Between the peripheral surface of the bowl (2) and the still body (1), a grinding channel (11) communicating with the inner cavity of the still body (1) is formed, and the stirring unit includes a stirring shaft and a cutter head (6), and the cutter head ( 6) It has a frame structure and includes several cutter heads (63). The cutter head (6) is sheathed outside the stirring shaft and is rotatably connected with the stirring shaft. The cutter head (6) can rotate around the stirring shaft under the action of the driving unit. Spiral up or down to crush and mix materials evenly. 2. The modified asphalt premix kettle according to claim 1, characterized in that, the stirring shaft comprises a lead screw (3) and a lead screw slide (4) that cooperates with the lead screw (3), and the lead screw (4) The rod (3) is fixedly connected with the grinding bowl (2) upwards, and the lead screw (3) is connected with the bottom of the kettle body (1) in rotation downwards, and a sleeve (5) is provided on the outer cover of the lead screw (3). The sleeve (5) is fixedly connected with the kettle body (1) downwards, and the side wall of the sleeve (5) is provided with an axially extended long hole, and one end of the screw slider (4) passes through Through the long hole and slidably connected with the long hole up and down, the part of the screw slider (4) protruding outside the sleeve (5) supports the cutter head (6) upwards, and the cutter head ( 6) It is rotatably connected with the part of the lead screw slider (4) protruding out of the sleeve (5), and the drive unit can transmit the rotational motion to the cutter head (6). 3. modified asphalt premix kettle according to claim 2, is characterized in that, the quantity of described long hole has a plurality of and is evenly circumferentially arranged on sleeve (5), and described screw slide block ( 4) A plurality of shaft rods corresponding in number are provided at the corresponding positions, and the shaft rods pass through the long holes and are clearance-fitted with the long holes. 4. The modified asphalt premixing kettle according to claim 3, characterized in that, a retaining bar (41) is fixedly connected to the shaft, and the retaining bar extends axially along the sleeve and can always cover the long hole. 5. The modified asphalt premixing kettle according to any one of claims 2 to 4, characterized in that, it also includes a turntable (7) arranged near the upper part of the inner cavity of the kettle body (1), and the turntable (7) is horizontal A plurality of transmission rods (8) are arranged and fixed vertically downward, and the transmission rods (8) pass through the cutter head (6) downwards, and the transmission rods (8) shown in the figure are in clearance fit with the cutter head (6). 6. The modified asphalt premixing kettle according to claim 5, characterized in that, the turntable (7) is sleeved outside the leading screw (3) and coaxial with the leading screw (3), and the leading screw ( 3) It is fixedly connected to the turntable (7), or the screw (3) transmits the rotational motion to the turntable (7) through a transmission mechanism. 7. modified asphalt premix kettle according to claim 5, is characterized in that, the quantity of described long hole has a plurality of and is evenly circumferentially arranged on sleeve (5), and described screw slide block ( 4) corresponding positions are provided with a plurality of shaft rods corresponding to the number, and the shaft rods pass through the long holes and are clearance-fitted with the long holes. ) is rotationally connected with the annular disc through a thrust ball bearing. 8. The modified asphalt premix kettle according to claim 6 or 7, characterized in that, the cutter head (6) comprises a plurality of rings (61) coaxially arranged, and a plurality of the rings (61) ) are connected by radially extending connecting rods (62), a plurality of circular rings (61) are evenly arranged with several cutter heads (63) in the circumferential direction, and the outermost peripheral surface of the circular ring is provided with bristles. The ends of the bristles are in contact with the inner wall of the kettle body (1) to avoid material adhesion. 9. The modified asphalt premixing kettle according to claim 8, characterized in that, the width of the grinding passage (11) from top to bottom gradually decreases, forming the still body (1) of the grinding passage (11) The inner wall faces upwards and extends outwards to form a storage chamber (12). The storage chamber (12) communicates with the material inlet (101) and the grinding channel (11) respectively, and the material outlet (102) is located in the kettle body ( 1) Lower part. 10. A method for using a modified asphalt premixing kettle, using the modified asphalt premixing kettle as described in any one of claims 2 to 4, characterized in that it comprises the following steps: 1) The drive unit transmits the rotational motion to the grinding bowl (2), and the material enters the inner cavity of the kettle body (1) through the grinding channel (11), and at the same time, the drive unit drives the cutter head (6) to move up and down; 2) The drive unit drives the turntable (7) at the same time, or the drive unit drives the turntable (7) to rotate after the material in the kettle body (1) reaches the set volume; 3) After the premixing is completed, the material is discharged through the material outlet (102).