Double-component slurry uniform mixing spray gun equipment

Abstract

The invention belongs to the technical field of road engineering pavement maintenance equipment, and provides double-component slurry uniform mixing spray gun equipment which comprises a spray gun body, a high-pressure gas flow channel is arranged in the spray gun body, one end of the high-pressure gas flow channel is communicated with compressed gas supply equipment, and the other end of the high-pressure gas flow channel is communicated with a nozzle through a mixing chamber; the double-component conveying assembly comprises a first component spiral conveying pipe and a second component spiral conveying pipe which are coiled in the spray gun body, and one end of the first component spiral conveying pipe and one end of the second component spiral conveying pipe are communicated with a first component nozzle and a second component nozzle which are used for spraying component liquid into the mixing chamber respectively; component flow control assemblies are respectively arranged at the other ends of the first component spiral conveying pipe and the second component spiral conveying pipe. According to the invention, the flow and the mixing uniformity of the two-component slurry can be controlled, so that the pavement grouting maintenance effect can be better improved.

Description

Technical Field

[0001] The invention belongs to the technical field of road engineering pavement maintenance equipment, and in particular relates to a two-component slurry uniform mixing spray gun equipment. Background Art

[0002] After cracks occur in semi-rigid base asphalt pavement, with the infiltration and erosion of rainwater and the fatigue of materials, cracks, poor interlayer conditions, large gaps, looseness and other defects usually exist inside the pavement structure. These defects can be regarded as diffusion channels in the grouting process, among which cracks and poor interlayer conditions can be regarded as crack-type channels, and large gaps or looseness can be regarded as gap-type channels. Therefore, grouting can be used to repair the internal defects of the pavement.

[0003] During the grouting process, whether the slurry fully and evenly fills the defects will determine the road maintenance effect. The grouting process mainly includes: hole layout, drilling, hole cleaning, pre-embedded sealing components, and grouting. Among them, grouting is the most critical in the whole process, and the grouting effect determines the road repair effect. At present, the two-component slurry injector used in road maintenance projects mainly uses a simple spray gun for grouting, which will cause a series of problems, mainly: 1. The two-component slurry is directly sprayed out through the spray gun nozzle and cannot be mixed well, which greatly affects the adhesion and durability of the two-component slurry; 2. The two components cannot be mixed according to the proportion, resulting in slurry waste and reduced slurry performance. Summary of the invention

[0004] The purpose of the present invention is to provide a two-component slurry uniform mixing spray gun equipment to solve the above-mentioned problems, so as to enable the spray gun to control the flow rate and mixing uniformity of the two-component slurry, so as to better improve the pavement grouting maintenance effect.

[0005] To achieve the above object, the present invention provides the following solution: a two-component slurry uniform mixing spray gun device, comprising:

[0006] A spray gun body, wherein a high-pressure gas flow channel is provided in the spray gun body, one end of the high-pressure gas flow channel is connected to a compressed gas supply device, and the other end of the high-pressure gas flow channel is connected to a nozzle through a mixing chamber;

[0007] A two-component delivery assembly includes a first component spiral delivery tube and a second component spiral delivery tube coiled in the spray gun body, one end of the first component spiral delivery tube and the second component spiral delivery tube are respectively connected to a first component nozzle and a second component nozzle for spraying component liquid into the mixing chamber, and the other ends of the first component spiral delivery tube and the second component spiral delivery tube are respectively provided with component flow control assemblies.

[0008] Preferably, the component flow control part connected to the first component spiral conveying tube includes a feed channel opened in the spray gun body, one end of the feed channel is connected to the first component spiral conveying tube, and a liquid flow control chamber is also opened in the spray gun body, the liquid flow control chamber runs through the feed channel, and a block is slidably connected in the liquid flow control chamber, and a first position adjustment part is arranged between the block and the spray gun body, and the first position adjustment part is used to control the cross-sectional area of ​​the feed channel blocked by the block.

[0009] Preferably, the first position adjustment member includes a second screw rod, which is transmission-connected to the spray gun body, one end of which is rotationally connected to the side wall of the block away from the feed channel, and the other end of the screw rod is located outside the spray gun body and fixedly connected to the first knob.

[0010] Preferably, a rotating rod is rotatably connected between the mixing chamber and the high-pressure airflow channel, a plurality of stirring blades are fixedly connected to the side wall of the rotating rod located in the mixing chamber, and a driving rotor is fixedly connected to the end of the rotating rod located in the high-pressure airflow channel, and the driving rotor can drive the rotating rod to rotate under the blowing of the high-pressure airflow.

[0011] Preferably, the feed channel connected to the first component spiral conveying pipe is connected to a first component conveying pipe via a first component flow sensor, and the feed channel connected to the second component spiral conveying pipe is connected to a second component conveying pipe via a second component flow sensor.

[0012] Preferably, a pressure sensor is fixedly embedded on the inner wall of the nozzle.

[0013] Preferably, one end of the high-pressure air flow channel away from the mixing chamber is connected to a compressed air interface, a throat is provided on the side of the high-pressure air flow channel close to the compressed air interface, a second air block is slidably connected in the throat, a second position adjustment component is provided between the second air block and the spray gun body, and the second position adjustment component controls the flow area of ​​the throat through the second air block.

[0014] Preferably, the second position adjusting member includes a first screw rod, one end of which is rotatably connected to the end of the second air block away from the throat, and the other end of the first screw rod is located outside the spray gun body and fixedly connected to a second knob.

[0015] Preferably, an airflow control chamber is also provided in the spray gun body, the airflow control chamber is connected to the high-pressure airflow channel, and the airflow control chamber is arranged close to the throat. A first air block is slidably connected in the high-pressure airflow channel, and a position control component is provided between the first air block and the spray gun body, and the position control component controls the opening and closing of the airflow channel through the first air block.

[0016] Preferably, the position control component includes a push rod, one end of which is slidably connected in the spray gun body and fixedly connected to the first air block, a trigger is hinged on the spray gun body, the trigger abuts against the other end of the push rod, and a spring abuts between one end of the first air block away from the push rod and the airflow control chamber.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects: the main function of the high-pressure air flow channel is to circulate high-pressure gas so that the high-pressure gas can spray the mixed components in the mixing chamber from the nozzle; the main function of the mixing chamber is to make the first component and the second component be evenly mixed before spraying; the main function of the first component spiral conveying tube and the second component spiral conveying tube is to make the first component and the second component have a certain kinetic energy before entering the mixing chamber, and spray into the mixing chamber along the tangent of the mixing chamber, so that the first component and the second component can impact each other and mix evenly in the mixing chamber; the main function of the component flow control assembly is to control the amount of the first component and the second component flowing into the mixing chamber respectively, so as to realize the control of the mixture. On the whole, the present invention is aimed at the two-component slurry, and the two-component slurry can be mixed according to the proportion before spraying the mixed slurry, so as to improve the adhesion and tolerance performance of the two-component slurry, improve the pavement maintenance effect, and help to increase the service life of the road. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A cross-sectional view of a spray gun device of the present invention;

[0020] Figure 2 for Figure 1 A partial enlarged view in FIG.

[0021] Figure 3 It is a schematic diagram of a first component spiral conveying pipe and a second component spiral conveying pipe in the spray gun device of the present invention;

[0022] Among them, 1. spray gun body; 2. nozzle; 3. pressure sensor; 4. mixing chamber; 5. stirring blade; 6. rotating rod; 7. high-pressure air flow channel; 8. driving rotary blade; 9. air outlet; 10. first component nozzle; 11. second component nozzle; 12. first component spiral conveying pipe; 13. second component spiral conveying pipe; 14. first component flow sensor; 15. first component feed pipe; 16. second component feed pipe; 17. second component flow sensor; 18. first knob; 19. trigger; 20. push rod; 21. first air block; 22. spring; 23. air flow control chamber; 24. second air block; 25. first screw rod; 26. second knob; 27. compressed air interface; 28. feed channel; 29. ​​liquid flow control chamber; 30. block; 31. second screw rod; 32. throat. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figure 1-Figure 3 The present invention provides a two-component slurry uniform mixing spray gun device, comprising:

[0026] A spray gun body 1, wherein a high-pressure gas flow channel 7 is provided in the spray gun body 1, one end of the high-pressure gas flow channel 7 is connected to a compressed gas supply device, and the other end of the high-pressure gas flow channel 7 is connected to a nozzle 2 through a mixing chamber 4;

[0027] The two-component delivery assembly includes a first component spiral delivery tube 12 and a second component spiral delivery tube 13 coiled in the spray gun body 1. One end of the first component spiral delivery tube 12 and the second component spiral delivery tube 13 are respectively connected to a first component nozzle 10 and a second component nozzle 11 for spraying component liquid into the mixing chamber 4, and the other ends of the first component spiral delivery tube 12 and the second component spiral delivery tube 13 are respectively provided with component flow control assemblies.

[0028] The main function of the high-pressure air flow channel 7 is to circulate high-pressure gas so that the high-pressure gas can spray the mixed components in the mixing chamber 4 from the nozzle 2; the main function of the mixing chamber 4 is to make the first component and the second component be evenly mixed before spraying; the main function of the first component spiral conveying tube 12 and the second component spiral conveying tube 13 is to make the first component and the second component have a certain kinetic energy before entering the mixing chamber 4, and spray into the mixing chamber 4 along the tangent of the mixing chamber 4, so that the first component and the second component can impact each other and mix evenly in the mixing chamber 4; the main function of the component flow control assembly is to control the amount of the first component and the second component flowing into the mixing chamber 4 respectively, so as to achieve control of the mixture. On the whole, the present invention is aimed at two-component slurry, and can mix the two-component slurry in proportion before spraying the mixed slurry, improve the adhesion and tolerance performance of the two-component slurry, improve the pavement maintenance effect, and help to increase the service life of the road.

[0029] A further optimized solution is that the component flow control component connected to the first component spiral conveying tube 12 includes a feed channel 28 opened in the spray gun body 1, one end of the feed channel 28 is connected to the first component spiral conveying tube 12, and a liquid flow control chamber 29 is also opened in the spray gun body 1. The liquid flow control chamber 29 runs through the feed channel 28, and a blocking block 30 is slidably connected in the liquid flow control chamber 29. A first position adjustment component is arranged between the blocking block 30 and the spray gun body 1, and the first position adjustment component is used to control the cross-sectional area of ​​the feed channel 28 blocked by the blocking block 30.

[0030] A further optimized solution is that the first position adjustment member includes a second screw rod 31, which is transmission-connected in the spray gun body 1, one end of the second screw rod 31 is rotationally connected to the side wall of the block 30 away from the feed channel 28, and the other end of the second screw rod 31 is located outside the spray gun body 1 and is fixedly connected to the first knob 18.

[0031] like Figure 1 and Figure 2 As shown, when the first component enters the first component spiral conveying tube 12 through the feed channel 28, it needs to pass through the block 30. When the delivery amount of the first component needs to be reduced, the operator can rotate the first knob 18 located above the spray gun body 1 to drive the second screw 31 at the top to rotate. When the second screw 31 rotates, the block 30 is driven to move to the left through the thread transmission, and the side wall of the block 30 is used to block the feed channel 28, reducing the cross-sectional area of ​​the feed channel 28, thereby reducing the entry amount of the first component. When the delivery amount of the first component needs to be increased, the first knob 18 located above can be rotated in the opposite direction.

[0032] Similarly, the delivery amount of the second component can be adjusted by the operator simply rotating the first knob 18 located in the middle of the spray gun body 1 .

[0033] A further optimized solution is that a rotating rod 6 is rotatably connected between the mixing chamber 4 and the high-pressure air flow channel 7, a plurality of stirring blades 5 are fixedly connected to the side wall of the rotating rod 6 located in the mixing chamber 4, and a driving rotor 8 is fixedly connected to the end of the rotating rod 6 located in the high-pressure air flow channel 7. The driving rotor 8 can drive the rotating rod 6 to rotate under the blowing of the high-pressure airflow.

[0034] like Figure 1 As shown, the side wall of one end of the high-pressure air flow channel 7 close to the mixing chamber 4 is connected to one end of the air outlet 9, and the other end of the air outlet 9 is connected to the mixing chamber 4. The high-pressure airflow enters the mixing chamber 4 through the public air outlet 9 and is sprayed out by the nozzle 2, which can ensure the sealing between the rotating rod 6 and the spray gun body 1.

[0035] When the high-pressure gas enters the mixing chamber 4 through the high-pressure gas flow channel 7, it will impact the driving blade 8, which drives the rotating rod 6 to rotate by driving the driving blade 8, and then drives the stirring blade 5 in the mixing chamber 4 to rotate, further stirring the two components in the mixing chamber 4 to make the mixture more uniform.

[0036] To further optimize the solution, the feed channel 28 connected to the first component spiral conveying pipe 12 is connected to the first component conveying pipe 15 through the first component flow sensor 14, and the feed channel 28 connected to the second component spiral conveying pipe 13 is connected to the second component conveying pipe 16 through the second component flow sensor 17.

[0037] like Figure 1 As shown, by providing the first component flow sensor 14 and the second component flow sensor 17, the injection amount of each component can be monitored respectively, and the proportional mixing of the two components can be achieved by adjusting the two first knobs 18.

[0038] According to a further optimized solution, a pressure sensor 3 is fixedly embedded on the inner wall of the nozzle 2 .

[0039] The main function of the pressure sensor 3 is to monitor the pressure of the spray nozzle 2 to avoid the slurry from sticking to the inside of the spray gun due to long-term use, making the slurry spray pressure difficult to control, resulting in excessive spray pressure and damage to the road surface.

[0040] As a further optimization scheme, a monitoring and display unit is further provided, which is electrically connected to the pressure sensor 3, the first component flow sensor 14 and the second component flow sensor 17, and displays the values ​​monitored by the above sensors.

[0041] A further optimization scheme is that the end of the high-pressure air flow channel 7 away from the mixing chamber 4 is connected to the compressed air interface 27, and a throat 32 is provided on the side of the high-pressure air flow channel 7 close to the compressed air interface 27, and a second air block 24 is slidably connected in the throat 32, and a second position adjustment component is provided between the second air block 24 and the spray gun body 1, and the second position adjustment component controls the flow area of ​​the throat 32 through the second air block 24.

[0042] According to a further optimization scheme, the second position adjustment member includes a first screw rod 25, one end of which is rotatably connected to the end of the second air block 24 away from the throat 32, and the other end of the first screw rod 25 is located on the outside of the spray gun body 1 and is fixedly connected to the second knob 26.

[0043] like Figure 1 As shown, the compressed gas supply device is connected to the compressed gas interface 27 to pass the compressed gas into the high-pressure air flow channel 7. The operator rotates the second knob 26 to drive the first screw rod 25 to rotate. Through the threaded transmission, the first screw rod 25 drives the second air block 24 to move downward, thereby opening the throat 32 so that the air can continue to flow backward. By controlling the degree of separation between the second air block 24 and the throat 32, the flow area at the throat 32 can be controlled, and the gas pressure entering the mixing chamber 4 can be controlled.

[0044] A further optimization scheme is that an airflow control chamber 23 is also provided in the spray gun body 1, and the airflow control chamber 23 is connected to the high-pressure airflow channel 7, and the airflow control chamber 23 is arranged close to the throat 32, and a first air block 21 is slidably connected in the high-pressure airflow channel 7, and a position control component is provided between the first air block 21 and the spray gun body 1, and the position control component controls the opening and closing of the high-pressure airflow channel 7 through the first air block 21.

[0045] A further optimized solution is that the position control component includes a push rod 20, one end of which is slidably connected in the spray gun body 1 and fixedly connected to the first air block 21, a trigger 19 is hinged on the spray gun body 1, the trigger 19 abuts against the other end of the push rod 20, and a spring 22 abuts between the end of the first air block 21 away from the push rod 20 and the airflow control chamber 23.

[0046] like Figure 1As shown, before use, the spring 22 pushes the first air block 21, and the end and side wall of the first air block 21 are used to block the airflow control chamber 23 and the high-pressure airflow channel 7, preventing the airflow from continuing to flow toward the mixing chamber 4. When the operator squeezes the trigger 19 inward to push the push rod 20 inward, so that the push rod 20 pushes the first air block 21 to move backward, the side wall of the first air block 21 no longer blocks the high-pressure airflow channel 7, and the high-pressure gas can flow backward through the air outlet 9 into the mixing chamber 4, while driving the stirring blade 5 to rotate, further stirring and mixing the two components in the mixing chamber 4. Finally, the mixed components are ejected from the nozzle 2 with the high-pressure airflow.

[0047] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A two-component slurry uniform mixing spray gun equipment, characterized in that: include: A spray gun body (1), wherein a high-pressure gas flow channel (7) is arranged in the spray gun body (1), one end of the high-pressure gas flow channel (7) is connected to a compressed gas supply device, and the other end of the high-pressure gas flow channel (7) is connected to a nozzle (2) through a mixing chamber (4); A two-component delivery assembly comprises a first component spiral delivery tube (12) and a second component spiral delivery tube (13) wound in the spray gun body (1), one end of the first component spiral delivery tube (12) and the second component spiral delivery tube (13) are respectively connected to a first component nozzle (10) and a second component nozzle (11) for spraying component liquid into the mixing chamber (4), and the other ends of the first component spiral delivery tube (12) and the second component spiral delivery tube (13) are respectively provided with component flow control assemblies.

2. A two-component slurry uniform mixing spray gun equipment according to claim 1, characterized in that: The component flow control component connected to the first component spiral conveying tube (12) includes a feed channel (28) provided in the spray gun body (1), one end of the feed channel (28) is connected to the first component spiral conveying tube (12), and a liquid flow control chamber (29) is also provided in the spray gun body (1), the liquid flow control chamber (29) runs through the feed channel (28), and a block (30) is slidably connected in the liquid flow control chamber (29), and a first position adjustment component is provided between the block (30) and the spray gun body (1), and the first position adjustment component is used to control the cross-sectional area of ​​the block (30) blocking the feed channel (28).

3. A two-component slurry uniform mixing spray gun device according to claim 2, characterized in that: The first position adjusting member comprises a second screw rod (31), the second screw rod (31) being transmission-connected in the spray gun body (1), one end of the second screw rod (31) being rotationally connected to a side wall of the block (30) away from the feed channel (28), and the other end of the screw rod (31) being located outside the spray gun body (1) and fixedly connected to a first knob (18).

4. A two-component slurry uniform mixing spray gun equipment according to claim 1, characterized in that: A rotating rod (6) is rotatably connected between the mixing chamber (4) and the high-pressure airflow channel (7); a plurality of stirring blades (5) are fixedly connected to the side wall of the rotating rod (6) located in the mixing chamber (4); a driving rotor (8) is fixedly connected to the end of the rotating rod (6) located in the high-pressure airflow channel (7); and the driving rotor (8) can drive the rotating rod (6) to rotate under the blowing of the high-pressure airflow.

5. A two-component slurry uniform mixing spray gun device according to claim 2, characterized in that: The feed channel (28) connected to the first component spiral conveying tube (12) is connected to a first component conveying tube (15) via a first component flow sensor (14), and the feed channel (28) connected to the second component spiral conveying tube (13) is connected to a second component conveying tube (16) via a second component flow sensor (17).

6. A two-component slurry uniform mixing spray gun device according to claim 1, characterized in that: A pressure sensor (3) is fixedly embedded on the inner wall of the nozzle (2).

7. The two-component slurry uniform mixing spray gun equipment according to claim 1, characterized in that: The end of the high-pressure air flow channel (7) away from the mixing chamber (4) is connected to a compressed air interface (27), and a throat (32) is provided on the side of the high-pressure air flow channel (7) close to the compressed air interface (27). A second air block (24) is slidably connected in the throat (32), and a second position adjustment member is provided between the second air block (24) and the spray gun body (1), and the second position adjustment member controls the flow area of ​​the throat (32) through the second air block (24).

8. A two-component slurry uniform mixing spray gun device according to claim 7, characterized in that: The second position adjusting member comprises a first screw rod (25), one end of which is rotatably connected to the end of the second air block (24) away from the throat (32), and the other end of the first screw rod (25) is located outside the spray gun body (1) and is fixedly connected to a second knob (26).

9. A two-component slurry uniform mixing spray gun device according to claim 7, characterized in that: The spray gun body (1) is also provided with an air flow control chamber (23), the air flow control chamber (23) is connected to the high-pressure air flow channel (7), and the air flow control chamber (23) is arranged close to the throat (32), and a first air block (21) is slidably connected to the high-pressure air flow channel (7), and a position control component is provided between the first air block (21) and the spray gun body (1), and the position control component controls the opening and closing of the air flow channel (7) through the first air block (21).

10. A two-component slurry uniform mixing spray gun device according to claim 9, characterized in that: The position control component comprises a push rod (20), one end of which is slidably connected in the spray gun body (1) and fixedly connected to the first air block (21); a trigger (19) is hinged on the spray gun body (1), the trigger (19) abuts against the other end of the push rod (20); a spring (22) abuts between one end of the first air block (21) away from the push rod (20) and the airflow control chamber (23).

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