Pre-coating modified aggregate treatment equipment for concrete

Abstract

The invention discloses pre-coating modified aggregate treatment equipment for concrete, which comprises a dispersing and conveying device for receiving aggregate and dispersing and conveying the aggregate; the gluing and conveying device is used for receiving the aggregate conveyed by the dispersing and conveying device, spraying a glue layer and then conveying; dispersed aggregate is modified in a spray gluing mode, a glue layer is directly conveyed to a concrete stirring procedure after being hardened to a set index by means of airflow blowing, the aggregate is coated with a glue solution in a dispersed state, and the aggregate is conveyed by airflow, so that the concrete stirring procedure is simplified, and the production efficiency is improved. Qualified aggregate modified by the epoxy glue can be produced and applied to production of the ultra-high performance concrete, the modified aggregate is prevented from being bonded in the hardening process, and therefore application and popularization of the modified aggregate ultra-high performance concrete are guaranteed.

Description

Technical Field

[0001] The invention relates to construction auxiliary equipment, in particular to pre-coat modified aggregate processing equipment for concrete. Background Art

[0002] Conventional concrete is formed by mixing aggregates with cement and other materials. Aggregates are granular materials that act as skeletons and fillers in concrete and mortar. They enhance the strength of concrete, improve the crack resistance of concrete, reduce the shrinkage and deformation of concrete, and reduce the thermal expansion coefficient of concrete. Aggregates are essential materials for concrete.

[0003] Aggregates generally require a certain particle size. After being mixed with concrete, they have a contact angle with cement and other materials at a microscopic level, resulting in a loose bond. Although certain set parameter requirements can be met, the advantages are still not ideal. In order to further bring into play the important role of aggregates in concrete, one of the inventors of this patent coated the surface of the aggregate with a layer of epoxy glue, which increased the contact area between the concrete and the aggregate and increased the adhesion between the two, thereby forming concrete with modified aggregates and improving the performance of the concrete.

[0004] During the experimental production process of modified aggregates, it is necessary to spray glue. The most commonly used method is to stir the aggregates in the epoxy glue before hardening and then add them to the concrete for mixing. At this time, the glue layer has not hardened and is easily dissolved by the water in the concrete or rubbed off by the substances in the concrete. As a result, most of the aggregates do not have the glue layer attached to them in the end, and ultimately fail to play the ideal role. Another situation is to completely cure the glue layer of the aggregate. At this time, it is relatively easy to disperse, but it cannot be mass-produced. At this time, the surface of the epoxy glue layer is relatively smooth, and there is also a contact angle with the concrete. There is a problem of low adhesion or even worse than not applying the glue layer. Therefore, the ideal state is that the epoxy glue layer on the surface of the aggregate is not completely cured but cured to the set hardness. During the mixing process with the concrete, the surface of the glue layer will undergo adaptive deformation, thereby eliminating the contact angle and increasing the adhesion. After curing, the advantages of the aggregate ultra-high performance concrete can be fully utilized. However, there is a strong bonding tendency between the glue layers that have not been fully cured, and they must be dispersed while waiting to cure to the set hardness, otherwise they will stick together and cannot be used for subsequent production; in the test, it can be handled by less efficient manual methods, but in the construction process, due to the large demand for concrete, it is impossible to achieve the purpose by manually applying the glue layer and dispersing the aggregate, which affects the promotion and application of concrete produced by modified aggregates.

[0005] Therefore, for the application of modified aggregate in the production of ultra-high performance concrete, an equipment is needed that can efficiently produce modified aggregate suitable for adding modified aggregate to concrete to produce modified aggregate concrete, avoid the problem of bonding during the curing process of coating epoxy glue, and thus make the promotion and application of modified aggregate concrete a reality. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a pre-coated modified aggregate processing equipment for concrete, which can efficiently produce modified aggregate suitable for adding modified aggregate to concrete to produce modified aggregate concrete, avoid the problem of bonding during the curing process of coating epoxy glue, thereby making the promotion and application of modified aggregate concrete a reality.

[0007] The pre-coat modified aggregate processing equipment for concrete of the present invention comprises:

[0008] A dispersing and conveying device, used for receiving aggregates and dispersing and conveying the aggregates;

[0009] The glue coating conveying device is used to receive the aggregates conveyed by the dispersing conveying device and spray a glue layer on them before conveying them;

[0010] The glue coating conveying device includes a conveying cylinder, a pneumatic conveying system and a glue spraying system. The inlet of the conveying cylinder is used to receive the aggregate of the dispersion conveying device, and the outlet of the conveying cylinder is used to convey the aggregate sprayed with the glue coating layer to the process of mixing to form concrete; the pneumatic conveying system includes a plurality of air flow nozzles, and the spraying direction of the air flow nozzles tends to the outlet of the conveying cylinder; the glue spraying system is provided with a plurality of glue atomizing nozzles, and the glue atomizing nozzles are used to atomize the glue and spray it onto the aggregate in the conveying cylinder.

[0011] Furthermore, the airflow nozzle comprises a front airflow nozzle and a barrel section airflow nozzle, and the airflow ejection direction of the front airflow nozzle is substantially consistent with the direction of the conveying barrel;

[0012] The air flow nozzle of the cylinder section is located at the bottom of the cylinder and the air flow ejection direction is inclined toward the outlet direction of the conveying cylinder and is tangent to the inner circle of the cylinder.

[0013] Furthermore, the glue atomizing nozzle includes a glue spray nozzle A located at the front section of the conveying cylinder and a glue spray nozzle B located at the rear section of the conveying cylinder;

[0014] The glue coating conveying device also includes a drying system, which is used to input a hot air flow into the rear section of the conveying cylinder, and the position of inputting the hot air flow is located after the B glue liquid spray nozzle.

[0015] Furthermore, each of the glue atomizing nozzles is correspondingly arranged at the front end of a glue pipe section, and a water spray pipe is connected to the glue pipe section, and the water spraying direction of the water spray pipe is inclined toward the spray outlet direction of the glue atomizing nozzle.

[0016] Furthermore, the dispersing and conveying device is located above the conveying cylinder and includes a hopper and a dispersing and conveying part, wherein the hopper is provided with a hopper inlet for receiving aggregate and a hopper outlet connected with a material inlet of the dispersing and conveying part;

[0017] The dispersed conveying part is divided into a plurality of dispersed channels, and the discharge ports of the dispersed channels face the feed port of the conveying cylinder.

[0018] Furthermore, the cylinder section airflow nozzles are multiple and distributed from front to back at the bottom of the conveying cylinder, and the angle at which the airflow ejection directions of the multiple cylinder section airflow nozzles are inclined toward the outlet direction of the conveying cylinder gradually decreases from front to back.

[0019] Furthermore, the A glue spray nozzle and the B glue spray nozzle are both multiple and distributed at the upper and lower parts of the conveying cylinder, and the number of the A glue spray nozzle and the B glue spray nozzle distributed at the upper part is greater than that at the lower part;

[0020] Part of the cylinder section air flow nozzles are cross-arranged with the A glue spray nozzle and the B glue spray nozzle.

[0021] Furthermore, the drying system comprises a plurality of hot air flow nozzles for ejecting hot air flow, wherein the hot air flow nozzles are located near the outlet of the conveying cylinder and the direction of ejecting the hot air flow is inclined toward the material incoming direction or perpendicular to the material flow direction.

[0022] Furthermore, the dispersion conveying part includes an outer shell, the dispersion channel is formed inside the outer shell, and a side opening on the outer shell corresponding to the dispersion channel and the conveying cylinder forms a dispersion channel discharge port, so that the dispersion channel discharge port is connected with the feed port of the conveying cylinder, and the front end airflow nozzle is distributed and installed at a position relative to each dispersion channel and the dispersion channel discharge port.

[0023] Furthermore, the dispersion channel is divided by a plurality of vertical partitions in the shell.

[0024] Beneficial effects of the present invention: The pre-coat modified aggregate processing equipment for concrete of the present invention modifies the dispersed aggregate by spraying glue, and uses airflow blowing to harden the glue layer to a set index and then directly transports it to the concrete mixing process. The glue liquid is applied when the aggregate is dispersed and transported by airflow. Qualified aggregate modified by epoxy glue can be produced and applied to the production of ultra-high performance concrete, avoiding bonding during the hardening process of the modified aggregate, thereby ensuring the promotion and application of ultra-high performance concrete with modified aggregate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 for Figure 1 The view along the A direction is a schematic diagram of the front structure of the dispersion channel;

[0028] Figure 3 It is a cross-sectional schematic diagram of the cylinder section airflow nozzle installed in the conveying cylinder;

[0029] Figure 4 It is an axial cross-sectional view of the airflow nozzle (including the front airflow nozzle and the barrel section airflow nozzle);

[0030] Figure 5 It is an axial cross-sectional view of the glue spray nozzle;

[0031] Figure 6 is an axial cross-sectional view of the hot gas flow nozzle;

[0032] Figure 7 Schematic diagram of the stirring assembly structure. DETAILED DESCRIPTION

[0033] like Figure 1-Figure 7 As shown: The pre-coating modified aggregate processing equipment for concrete of this embodiment includes:

[0034] The dispersing and conveying device 1 is used to receive aggregates and disperse and convey the aggregates; the function of the dispersing and conveying device is to disperse the aggregates and try to form relatively uniform and independent aggregate individuals. Generally, physical external forces are used for dispersion, such as vibration screening, pneumatic stirring, etc., which have the effect of dispersing aggregates;

[0035] The glue coating conveying device 2 is used to receive the aggregates conveyed by the dispersion conveying device and spray the glue layer on the aggregates before conveying them to the stirring device;

[0036] The glue coating conveying device comprises a conveying cylinder 201, a pneumatic conveying system and a glue spraying system. The inlet of the conveying cylinder is used to receive the aggregate of the dispersion conveying device, and the outlet of the conveying cylinder 201 is used to convey the aggregate sprayed with the glue coating layer to the process of mixing into concrete; the pneumatic conveying system comprises a plurality of air flow nozzles, and the spraying direction of the air flow nozzles tends to the outlet of the conveying cylinder. The air flow sprayed by the air flow nozzles is generally an air flow with a set speed. Since the spraying direction tends to the outlet, a pneumatic thrust is formed on the aggregate discharge, and at the same time, a pneumatic disturbance is formed on the aggregate to keep it dispersed, which is conducive to the subsequent glue coating process. The glue spray system is provided with a plurality of glue atomizing nozzles, and the glue atomizing nozzles are used to atomize the glue and spray it toward the aggregate in the conveying cylinder; due to the effect of the airflow sprayed by the airflow nozzle, the aggregate is disturbed and flows, and the atomized glue sprayed by the glue atomizing nozzle can be coated on the surface of the aggregate; of course, the airflow rate of the airflow nozzle and the amount of glue sprayed by the glue atomizing nozzle are adjusted according to the amount of aggregate, so as to achieve the purpose of coating the glue layer on the surface of the aggregate, and at the same time, the airflow velocity of the airflow nozzle can accelerate the curing speed of the glue layer while driving the aggregate to flow, so as to ensure that the aggregate at the discharge port of the conveying cylinder enters the mixing process;

[0037] When the present invention is used, it is also necessary to enter the stirring device 3 when it is dried and hardened to a set hardness. The stirring device 3 is used to receive the aggregate sprayed with the glue layer and stir it with the concrete to form a modified aggregate concrete; the stirring device can be implemented by using existing concrete mixing equipment, such as a mixing truck, a mixing tank, etc., which will not be described in detail here;

[0038] In this embodiment, the air flow nozzle includes a front air flow nozzle 202 and a cylinder section air flow nozzle 203. The air flow ejection direction of the front air flow nozzle 202 is basically consistent with the direction of the conveying cylinder. Basically consistent means that the ejection direction of the air flow is basically along the direction from the cylinder inner cavity to the outlet, and there may be a small deviation angle, which will not be repeated here; the front air flow nozzle 202 is used to apply a primary flow direction driving force to the aggregate entering the conveying cylinder, so as to ensure that the aggregate has a driving force to flow along the conveying cylinder; as shown in the figure, the dispersion conveying device is located at the upper part of the glue coating conveying device, and directly uses gravity to successively convey the dispersed aggregate to the conveying cylinder. The front air flow nozzle is located at one side end of the conveying cylinder, located at the position where the aggregate falls from the dispersion conveying device (generally using gravity) and directly blows the fallen aggregate to pneumatically drive the aggregate to flow; there may be multiple front air flow nozzles, and the ejection direction of the air flow is basically in accordance with the direction of the cylinder, and there may be a small distribution angle between each, which will not be repeated here;

[0039] The cylinder section airflow nozzle 203 is located at the bottom of the conveying cylinder 201 and the airflow ejection direction is inclined toward the outlet direction of the conveying cylinder 201 and is tangent to the inner circle of the conveying cylinder; Figure 3As shown, the airflow is ejected tangentially to the inner circle of the conveying cylinder 201, which can prevent the aggregate from sinking to the bottom and further disturb the aggregate in the cylinder. At the same time, the ejection direction is inclined toward the outlet direction of the conveying cylinder, so that the aggregate is driven forward and disturbed by the spiral and does not agglomerate but remains dispersed, ensuring that the subsequent glue spraying process proceeds normally.

[0040] like Figure 4 As shown, the airflow channel of the airflow nozzle (including the front airflow nozzle 202 and the cylinder section airflow nozzle 203) is a Venturi structure 2021, 2031, which is conducive to increasing the flow rate and also has a larger spraying cross-section. Under the joint action of multiple nozzles, it is conducive to covering the path through which the aggregate passes, thereby avoiding the problem of aggregate agglomeration and passing through the conveying cylinder in an orderly manner;

[0041] In the present invention, the injection power of the airflow nozzle (including the barrel section airflow nozzle and the front end airflow nozzle) can be achieved by using a compressor or a high-pressure container in the prior art, and each airflow nozzle is provided with a regulating valve that can adjust the flow rate and pressure, so that the injection parameters of each nozzle can be adjusted in a targeted manner to achieve targeted control during disturbance and transportation.

[0042] In this embodiment, the glue atomizing nozzle includes an A glue spray nozzle 204 located at the front section of the conveying cylinder and a B glue spray nozzle 205 located at the rear section of the conveying cylinder 201; as shown in the figure, this structure is suitable for glue materials with a base glue plus a curing agent, and can effectively control the curing time and curing timing; the A glue spray nozzle is located at the front section of the conveying cylinder and is generally used for spraying the base glue, and the B glue spray nozzle 205 is located at the rear section of the conveying cylinder and is used to spray the curing agent for curing the base glue; according to the degree of atomization and the curing properties, the A glue spray The nozzle 204 and the B glue spray nozzle 205 should be arranged adjacent to each other, or, although they are located at the front section and the rear section of the cylinder respectively, the description of the front section and the rear section of the cylinder does not have a strict boundary in this patent, and the two may be crossed, which is only used to describe the relative front and rear of the group of A glue spray nozzles 204 and the group of B glue spray nozzles 205, that is, when there are multiple A glue spray nozzles and B glue spray nozzles, the two may be arranged crosswise to ensure that the base glue and the curing agent can be mixed in time and fully;

[0043] The glue coating conveying device also includes a drying system, which is used to input a hot air flow into the rear section of the conveying cylinder, and the position of inputting the hot air flow is located after the B glue spray nozzle 205; the drying system uses a hot air flow, which can be conveniently heated by the heating device at the construction site and the exhaust system of the engine, and can adapt to the glue environment of the spray; the position of the hot air flow can ensure the curing control of the aggregate coated with the base glue and the curing agent; the outflow volume, flow rate and temperature of the hot air flow are adjusted according to the amount of aggregate and the spray volume of the glue and curing agent, which will not be repeated here; of course, in addition to the conveying and disturbing effects, the air flow of the air flow nozzle can also play a certain drying role. Combined with the drying system, the degree of drying can be reasonably determined to achieve the hardness required for entering the concrete mixing.

[0044] In this embodiment, each of the glue atomizing nozzles (including glue spray nozzle A and glue spray nozzle B) is correspondingly arranged at the front end of a glue pipe section, and a water spraying pipe 2042, 2052 is connected to the glue pipe section, and the water spraying direction of the water spraying pipe is inclined toward the spraying direction of the glue atomizing nozzle; the water spraying pipe sprays dilution water into the glue pipe section to disperse the colloid to form a sprayable glue and spray it; of course, the amount of water sprayed and the flow rate, etc. need to be adjusted according to the amount of colloid, which will not be repeated here;

[0045] like Figure 5 As shown, the spray channels of the glue atomizing nozzles (including glue spray nozzle A and glue spray nozzle B) are both venturi structures 2041, 2051, and the outlets are divided into small holes 2043, 2053 that allow the glue to be fully atomized, which will not be described in detail here;

[0046] In the present invention, the injection power of the glue and water in the glue atomizing nozzle can be achieved by using a machine pump or a high-pressure container in the prior art, and each glue atomizing nozzle is provided with a regulating valve that can adjust the flow rate and pressure, so that the injection parameters of each nozzle can be adjusted in a targeted manner, thereby achieving targeted control during the glue spraying process.

[0047] In this embodiment, the dispersed conveying device 1 is located above the conveying cylinder 201 and includes a hopper 101 and a dispersed conveying part 102. The hopper 101 is provided with a hopper inlet for receiving aggregates and a hopper outlet connected with the feed inlet of the dispersed conveying part. As shown in the figure, the dispersed conveying device 1 is located above the conveying cylinder 201, and the hopper 101 and the dispersed conveying part 102 are arranged from top to bottom, and the aggregates are conveyed downward by gravity. The dispersed conveying part 102 can be integrally formed with the hopper 101, which will not be described in detail here.

[0048] The dispersing conveying part 102 is divided into a plurality of dispersing channels 1021, and the dispersing channels 1021 have a material outlet facing the material inlet of the conveying cylinder. As shown in the figure, the dispersing channels 1021 are a plurality of channels arranged in parallel from top to bottom, and the aggregate is divided into multiple channels when falling, thereby forming a dispersed state, which is beneficial to subsequent processing.

[0049] In this embodiment, Figure 2 As shown, the dispersion conveying part includes a shell, the dispersion channel is formed inside the shell, and the side opening of the shell corresponding to the dispersion channel and the conveying cylinder forms a dispersion channel discharge port, so that the dispersion channel discharge port is connected with the feed port of the conveying cylinder, and the front end air flow nozzle is distributed and installed at the position opposite to each dispersion channel and the dispersion channel discharge port; as shown in the figure, the shell and the hopper 101 are integrally formed or welded, riveted or detachably connected and fixed, which belongs to the conventional mechanical connection method and is not repeated here; the shell of the dispersion conveying part is closed around the upper part of the conveying cylinder and gradually shrinks downward, and the part corresponding to the inside of the conveying cylinder is open on the side, and the outside is closed (of course, it can also be not closed, and the conveying is not affected by the action of the front end air flow nozzle), so that the dispersion channel discharge port is connected with the conveying cylinder; each dispersion channel is provided with a front end air flow nozzle to ensure that all aggregates can be normally transported to the conveying cylinder.

[0050] In this embodiment, the dispersion channel is divided by a plurality of vertical partitions in the outer shell. The partitions are welded to the outer shell, and dispersion channels are formed between adjacent partitions and between the partitions and the outer shell, so that the aggregate can be evenly dispersed into the conveying cylinder.

[0051] In this embodiment, the cylinder section airflow nozzles 203 are multiple and distributed from front to back at the bottom of the conveying cylinder. The angle at which the airflow ejection directions of the multiple cylinder section airflow nozzles are inclined toward the outlet direction of the conveying cylinder gradually decreases from front to back; the arrangement of the multiple cylinder section airflow nozzles can keep the aggregate in the entire cylinder disturbed during the flow process. Of course, the flow rate and pressure of each front end airflow nozzle and each cylinder section airflow nozzle can be adjusted according to the flow rate of the aggregate in the cylinder, the degree of disturbance, the thickness of the aggregate covered by the glue spray and the curing effect, so as to ensure the final gluing effect.

[0052] In this embodiment, the A glue spray nozzle 204 and the B glue spray nozzle 205 are both multiple and distributed at the upper and lower parts of the conveying cylinder, and the number of the A glue spray nozzle and the B glue spray nozzle distributed at the upper part is greater than that at the lower part; to ensure that the aggregate is sprayed in all directions, the upper part is conducive to full contact spraying because it faces the disturbed aggregate, so the number of the upper part is greater than that of the lower part; in this structure, the flow rate and pressure of the glue spray can be adjusted, and generally the glue nozzle at the lower part is larger than the glue nozzle at the upper part, and while spraying, it assists in disturbing the aggregate;

[0053] Part of the cylinder section air flow nozzle 203 is cross-arranged with the A glue spray nozzle 204 and the B glue spray nozzle 205 to ensure that the glue and curing agent outside the aggregate form a cross spray and are fully mixed to ensure the final curing effect.

[0054] The drying system includes a plurality of hot air flow nozzles 206 for ejecting hot air flow, and the hot air flow nozzles 206 are located near the outlet of the conveying cylinder and the direction of ejecting the hot air flow is inclined to the incoming direction of the material or perpendicular to the material flow direction; the aggregate sprayed with the glue is dried by the hot air flow, and combined with the air flow drying of the air flow nozzle, qualified modified aggregate is formed at the outlet of the cylinder; the hot air flow can be formed by other equipment on the construction site and directly connected to the hot air flow nozzle, such as equipment for heating asphalt or heating the road surface, which can be achieved by transmission using general equipment such as compressors, which will not be repeated here; the air flow outflow direction of the hot air flow nozzle 206 is generally inclined or perpendicular to the incoming direction to ensure that the hot air flow can be fully utilized, which will not be repeated here; the temperature and flow rate of the hot air flow can be adjusted to meet the needs of drying; such as Figure 6 As shown, the outlet portion 2061 of the hot air flow nozzle is a flared structure to ensure the dispersion of the hot air flow and thus improve the heating efficiency. The outlet of the hot air flow nozzle is divided into a plurality of hot air flow holes 2062 to further ensure the dispersion of the hot air flow and improve the flow rate.

[0055] In this embodiment, the stirring device 3 includes a stirring shell 302 and a stirring assembly 301, and the stirring assembly 301 includes a stirring shaft 3012 and a spiral blade 3011 arranged on the stirring shaft 3012. The stirring shaft 3012 can be driven (the driving power can be achieved by the power machinery of the prior art, which will not be repeated here) to rotate and drive the spiral blade 3011 to stir the material and drive the material to flow along the axial direction; Figure 7 As shown, spiral blades are used for stirring, so that the material can flow along the axial direction of the stirring shaft, avoiding the modified aggregate from staying in one place and causing re-agglomeration, so as to ensure the uniform distribution of the modified aggregate in the product; the stirring components can be two or more groups, forming a circulating stirring in the stirring shell, that is, during stirring, the concrete is in a circulating flow state, thereby further improving efficiency and quality; Figure 7 As shown, the stirring shell is semicircular and mostly enclosed in the stirring assembly 301 from bottom to top, and is supported by a bracket 303. The bracket 303 also supports the conveying cylinder, and the dispersion shell is only attached to the conveying cylinder. The whole is a complete integrated structure. The corresponding bracket structure can be set by existing mechanical means. The whole is complete and compact, can be installed on a traveling vehicle, and is convenient and flexible to use.

[0056] As for the conveying cylinder (glue coating conveying device part) of this equipment, the inventor conducted a simple experiment: the air flow conveying, disturbance and glue spraying in the cylinder are similar to those in this patent, and the heating is achieved by installing a resistance wire near the cylinder outlet. After many tests, the modified aggregate with suitable surface hardness was finally obtained; but after research and analysis, it was found that the heating by the resistance wire was not uniform enough. After theoretical analysis, the use of hot air flow heating with a set pressure, combined with the aforementioned wind drying, has a better technical effect.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A pre-coat modified aggregate processing equipment for concrete, characterized in that: include: A dispersing and conveying device, used for receiving aggregates and dispersing and conveying the aggregates; The glue coating conveying device is used to receive the aggregates conveyed by the dispersing conveying device and spray a glue layer on them before conveying them; The glue coating conveying device includes a conveying cylinder, a pneumatic conveying system and a glue spraying system. The inlet of the conveying cylinder is used to receive the aggregate of the dispersion conveying device, and the outlet of the conveying cylinder is used to convey the aggregate sprayed with the glue coating layer to the process of mixing to form concrete; the pneumatic conveying system includes a plurality of air flow nozzles, and the spraying direction of the air flow nozzles tends to the outlet of the conveying cylinder; the glue spraying system is provided with a plurality of glue atomizing nozzles, and the glue atomizing nozzles are used to atomize the glue and spray it onto the aggregate in the conveying cylinder.

2. The pre-coat modified aggregate processing equipment for concrete according to claim 1, characterized in that: The airflow nozzle comprises a front airflow nozzle and a barrel section airflow nozzle, and the airflow ejection direction of the front airflow nozzle is substantially consistent with the direction of the conveying barrel; The air flow nozzle of the cylinder section is located at the bottom of the cylinder and the air flow ejection direction is inclined toward the outlet direction of the conveying cylinder and is tangent to the inner circle of the cylinder.

3. The pre-coat modified aggregate processing equipment for concrete according to claim 2, characterized in that: The glue atomizing nozzle includes a glue spray nozzle A located at the front section of the conveying cylinder and a glue spray nozzle B located at the rear section of the conveying cylinder; The glue coating conveying device also includes a drying system, which is used to input a hot air flow into the rear section of the conveying cylinder, and the position of inputting the hot air flow is located after the B glue liquid spray nozzle.

4. The pre-coat modified aggregate processing equipment for concrete according to claim 1, characterized in that: Each of the glue atomizing nozzles is correspondingly arranged at the front end of a glue pipe section, and a water spray pipe is connected to the glue pipe section. The water spraying direction of the water spray pipe is inclined toward the spray outlet direction of the glue atomizing nozzle.

5. The pre-coat modified aggregate processing equipment for concrete according to claim 3, characterized in that: The dispersing conveying device is located above the conveying cylinder and includes a hopper and a dispersing conveying part, wherein the hopper is provided with a hopper inlet for receiving aggregate and a hopper outlet connected with a material inlet of the dispersing conveying part; The dispersed conveying part is divided into a plurality of dispersed channels, and the discharge ports of the dispersed channels face the feed port of the conveying cylinder.

6. The pre-coat modified aggregate processing equipment for concrete according to claim 3, characterized in that: There are multiple cylinder section airflow nozzles distributed from front to back at the bottom of the conveying cylinder, and the angles of the airflow ejection directions of the multiple cylinder section airflow nozzles inclined toward the outlet direction of the conveying cylinder gradually decrease from front to back.

7. The pre-coat modified aggregate processing equipment for concrete according to claim 6, characterized in that: There are multiple A glue spray nozzles and B glue spray nozzles, which are distributed at the upper and lower parts of the conveying cylinder, and the number of A glue spray nozzles and B glue spray nozzles distributed at the upper part is greater than that at the lower part; Part of the cylinder section air flow nozzles are cross-arranged with the A glue spray nozzle and the B glue spray nozzle.

8. The pre-coat modified aggregate processing equipment for concrete according to claim 7, characterized in that: The drying system comprises a plurality of hot air flow nozzles for ejecting hot air flow, wherein the hot air flow nozzles are located near the outlet of the conveying cylinder and the direction of ejecting the hot air flow is inclined toward the material incoming direction or perpendicular to the material flow direction.

9. The pre-coat modified aggregate processing equipment for concrete according to claim 5, characterized in that: The dispersion conveying part includes an outer shell, the dispersion channel is formed inside the outer shell, and the side opening of the outer shell corresponding to the dispersion channel and the conveying cylinder forms a dispersion channel discharge port, so that the dispersion channel discharge port is connected with the feed port of the conveying cylinder, and the front end airflow nozzles are distributed and installed at the positions opposite to each dispersion channel and the dispersion channel discharge port.

10. The pre-coat modified aggregate processing equipment for concrete according to claim 9, characterized in that: The dispersion channel is divided by a plurality of vertical partitions in the shell.

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