Spray head device

Abstract

The application provides a nozzle device, which comprises a mounting base, a nozzle mechanism arranged on the mounting base, the nozzle mechanism having a shell and a nozzle arranged on the shell, the shell having a mixing cavity therein and the nozzle being communicated with the mixing cavity, a plurality of feeding ports being arranged on the shell and communicated with the mixing cavity, the mixing cavity being used for mixing a plurality of materials, and a rotary spraying mechanism arranged on the mounting base, the rotary spraying mechanism having a mixing cavity communicated with the nozzle, a plurality of discharging ports being arranged on the rotary spraying mechanism and communicated with the mixing cavity, and the rotary spraying mechanism having a movable stroke rotating along an axial direction and used for throwing the mixed materials out of the discharging ports during the rotation. The nozzle device provided by the application aims at solving the problems of low repairing efficiency and low safety in the prior art.

Description

Technical Field

[0001] This invention relates to the field of pipeline and manhole repair technology, and in particular to a nozzle device. Background Technology

[0002] With China's urbanization process, underground pipe networks are also expanding and extending rapidly. Existing pipelines are playing an increasingly important role in ensuring water supply and drainage and serving society. However, as time goes by, the aging of the pipeline network has brought a series of problems. For the country, society, and water supply companies, how to complete pipeline renovation with relatively low cost, high efficiency, and excellent repair quality has become a major issue.

[0003] With the continuous development of technology, trenchless repair technology has become the mainstream technology for the renovation of underground water supply and drainage pipe networks. Existing trenchless technologies include thermoplastic method, insertion method, CIPP in-situ curing method, pipe fragmentation method, spiral winding method, necking lining method, folding lining method, CIPP in-situ repair method, double expansion ring lining method, and mortar spraying method. The above repair methods have drawbacks such as long repair time, the need to excavate working pits during repair, and limitations on the diameter of the pipes to be repaired.

[0004] Polyurea elastomer (SPUA), a novel waterproof and wear-resistant material, is composed of component A (isocyanate reacting with oligomeric diols or triols) and component B (amino-terminated polyethers, liquid amine chain extenders, pigments, fillers, and additives). The process of spraying or casting SPUA onto components A and B using a spraying machine is a rapid-reaction spraying system. The raw material system is solvent-free, has a fast curing speed, and a simple process. SPUA construction materials are characterized by good comprehensive performance, multiple functions, waterproofing, corrosion resistance, and excellent workability. SPUA elastomer gels in 10 seconds, cures rapidly in 30 seconds, and allows water to flow through pipes within 20 minutes. It also exhibits good wear resistance and a designed service life of at least 30 years.

[0005] Currently, the mainstream polyurea spraying construction on the market still involves manual spraying of pipes or inspection wells with handheld spray guns. This spraying method is not only inefficient and physically demanding, but also requires a large working space, making it unsuitable for small-diameter pipes. In addition, the material has an irritating odor, and long-term handheld spraying poses a significant health hazard to construction workers. Summary of the Invention

[0006] This invention provides a nozzle device to solve the problems of low efficiency and low safety in the existing technology of spraying repair of inspection wells.

[0007] To address the problems existing in the prior art, embodiments of the present invention provide a nozzle device for pipeline and inspection well repair, the nozzle device comprising:

[0008] Mounting base;

[0009] A nozzle mechanism is provided on the mounting base. The nozzle mechanism has a housing and a nozzle disposed on the housing. The housing has a mixing chamber, and the nozzle communicates with the mixing chamber. The housing also has multiple feed inlets communicating with the mixing chamber. The mixing chamber is used for mixing multiple materials; and...

[0010] A rotary spraying mechanism is provided on the mounting base. The rotary spraying mechanism has a mixing chamber communicating with the nozzle. The rotary spraying mechanism is provided with multiple discharge ports communicating with the mixing chamber. The rotary spraying mechanism has a movable stroke that rotates along its axial direction, so as to throw the mixed material out from each of the discharge ports during the rotation process.

[0011] According to a nozzle device provided by the present invention, the rotary spraying mechanism includes a rotating component and a driving component, wherein the driving component drives the rotating component to have a movable stroke for rotating along its axial direction;

[0012] The rotating component includes a base and a sidewall disposed along the periphery of the base. The sidewall and the base enclose the mixing cavity, and the sidewall has a plurality of discharge ports communicating with the mixing cavity.

[0013] According to a nozzle device provided by the present invention, each of the discharge ports is disposed through the side wall to divide the side wall into a plurality of spaced material distribution blocks, and the width of each material distribution block gradually decreases from the direction away from the mixing chamber to the direction closer to the mixing chamber.

[0014] According to a nozzle device provided by the present invention, the base protrudes into a conical portion on the side near the mixing chamber toward the mixing chamber.

[0015] According to a nozzle device provided by the present invention, the driving component includes a driver and a transmission component disposed on the mounting base. The transmission component includes a driving gear and a driven gear meshing together. The driver drives the driving gear, and the driven gear drives the rotating component so that the rotating component has a travel stroke for rotating along its axial direction.

[0016] According to the present invention, a nozzle device is provided, wherein the mounting base has a mounting cavity, and the nozzle mechanism and the driving member are both disposed within the mounting cavity;

[0017] The mounting base has an opening on the side near the rotating member that communicates with the mounting cavity. The rotating member also includes a fixing plate on the side wall away from the base. The output shaft of the transmission gear extends out of the opening and is drivenly connected to the fixing plate.

[0018] According to a nozzle device provided by the present invention, the fixing plate has a mounting hole communicating with the mixing chamber, and the nozzle passes through the opening and the mounting hole in sequence and extends into the mixing chamber.

[0019] According to a nozzle device provided by the present invention, a bearing is further provided at the opening, and the bearing is sleeved with the output shaft of the transmission gear;

[0020] The rotating component also includes a flange disposed on the fixed plate, and the flange is connected to the bearing.

[0021] According to a nozzle device provided by the present invention, the nozzle mechanism includes a first air pipe and a second air pipe disposed within the housing. Both the first air pipe and the second air pipe are connected to the nozzle. The first air pipe is provided with a pneumatic valve, and the second air pipe is provided with a solenoid valve. The first air pipe is used to clean the nozzle, and the second air pipe is used to spray material.

[0022] According to a nozzle device provided by the present invention, the mounting base is provided with a transition fixing block on the side away from the rotating member. The transition fixing block is provided with an air circuit connector, a hydraulic connector and an electrical connector. The first air pipe and the second air pipe are both connected to the air circuit connector. The feed port is connected to the hydraulic connector through a feed pipe. The solenoid valve is connected to the electrical connector.

[0023] According to a nozzle device provided by the present invention, the mounting base is further provided with two lifting rings on the side away from the rotating member.

[0024] The nozzle device provided by this invention achieves primary mixing of multiple materials through a nozzle mechanism. The mixed materials enter the mixing chamber through the nozzle, and under the high-speed rotation of the rotating nozzle mechanism, the materials undergo secondary mixing and are simultaneously ejected from various outlets, enabling uniform spraying onto the inner wall surface of the pipeline. The nozzle device provided by this invention requires no manual control, is suitable for pipelines and manholes of various diameters, and exhibits good performance even with highly corrosive materials, greatly improving the efficiency and safety of pipeline repair. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the nozzle device provided by the present invention;

[0027] Figure 2 yes Figure 1 A schematic diagram of a partial three-dimensional structure;

[0028] Figure 3 yes Figure 1 A sectional view;

[0029] Figure 4 yes Figure 1 A partial three-dimensional structural diagram of the central nozzle mechanism;

[0030] Figure 5 yes Figure 1 A three-dimensional structural diagram of the nozzle;

[0031] Figure 6 yes Figure 1 A three-dimensional structural diagram of the rotating component.

[0032] Figure label:

[0033] 1: Nozzle assembly; 2: Mounting base; 3: Nozzle mechanism;

[0034] 4: Rotary spraying mechanism; 5: Mounting cavity; 6: Opening;

[0035] 7: Adapter fixing block; 8: Lifting ring; 9: Housing;

[0036] 10: Nozzle; 11: Mixing chamber; 12: Feed inlet;

[0037] 13: Solenoid valve; 14: Mixing chamber; 15: Discharge port;

[0038] 16: Rotating component; 17: Base; 18: Side wall;

[0039] 19: Material dividing block; 20: Conical section; 21: Fixing plate;

[0040] 22: Mounting hole; 23: Bearing; 24: Driver;

[0041] 25: Driving gear; 26: Driven gear; 27: Flange;

[0042] 28: Drive components. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0044] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0046] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] The following is combined Figures 1-6 The nozzle device 1 of the present invention is described.

[0049] Currently, mainstream pipeline repair work, such as polyurea spraying, still relies on manual hand-held spray guns to repair pipelines or manholes. This method is not only inefficient and physically demanding, but also requires a large workspace, making it unsuitable for small-diameter pipes. Furthermore, the material has a pungent odor, and prolonged hand-held spraying poses a significant health hazard to workers. Therefore, this invention provides a spray head device 1, comprising: a mounting base 2; and a spray head mechanism 3 disposed on the mounting base 2. The spray head mechanism 3 has a housing 9 and a nozzle 10 disposed on the housing 9. The housing 9 has a mixing chamber 11, and the nozzle 10 communicates with the mixing chamber 11. The housing 9 also has multiple feed inlets 12 communicating with the mixing chamber 11. Taking polyurea elastomer as an example, polyurea elastomer is made by reacting isocyanate with oligomeric diol or triol to obtain component A, and component B is composed of amino-terminated polyether, liquid amine chain extender, pigment, filler and additives. Component A and component B enter the mixing chamber 11 through different feed ports 12 and are mixed once in the mixing chamber 11.

[0050] The nozzle device 1 also includes a rotary spraying mechanism 4, which is mounted on the mounting base 2. The rotary spraying mechanism 4 has a mixing chamber 14 communicating with the nozzle 10, and multiple discharge ports 15 communicating with the mixing chamber 14. The rotary spraying mechanism 4 has a stroke for rotation along its axial direction. The material after primary mixing undergoes secondary mixing in the mixing chamber 14. During the high-speed rotation of the rotary spraying mechanism 4, the secondary mixed material is ejected from each discharge port 15 and evenly coated onto the side wall 18 of the pipe or well that needs repair.

[0051] The nozzle device 1 provided by this invention achieves primary mixing of multiple materials through the nozzle mechanism 3. The mixed materials enter the mixing chamber 14 through the nozzle 10. Under the high-speed rotation of the rotating nozzle mechanism 3, the materials achieve secondary mixing and are simultaneously ejected from each discharge port 15, which can uniformly coat the inner wall surface of the pipe or well. The nozzle device 1 provided by this invention does not require manual control, is suitable for pipes and wells of various diameters, and has good performance even for highly corrosive materials, greatly improving the efficiency and safety of pipeline repair.

[0052] Specifically, please refer to Figures 1-3The rotary spraying mechanism 4 includes a rotating component 16 and a driving component 28. The driving component 28 drives the rotating component 16, giving it a axial rotational stroke. In the technical solution provided by this invention, the rotating component 16 includes a base 17 and a sidewall 18 arranged around the periphery of the base 17. The sidewall 18 and the base 17 enclose a mixing cavity 14. In this embodiment, the base 17 and the sidewall 18 are combined into a cylinder, but other shapes are also possible, and this invention does not limit them. Multiple outlets 15 communicating with the mixing cavity 14 are provided on the sidewall 18. The outlets 15 can be of any shape, such as strips, holes, etc. Technicians can set appropriate outlets 15 according to the paint density and pipe diameter during actual operation. For example, if the paint density is high, the outlet 15 will be large; if the pipe diameter is small, the outlet 15 will be small, and so on.

[0053] In the technical solution provided by this invention, each discharge port 15 is disposed through the side wall 18 to divide the side wall 18 into multiple spaced material distribution blocks 19. Please refer to [link to relevant documentation]. Figure 3 as well as Figure 6 The width of each material distribution block 19 gradually decreases from the direction away from the mixing chamber 14 to the direction closer to the mixing chamber 14. As shown in the diagram, the cross-section of each material distribution block 19 is triangular (or trapezoidal, etc.). This arrangement results in a pointed end of the material distribution block 19 near the mixing chamber 14, which cuts and separates the coating, facilitating coating diversion. Furthermore, the diameter of the outlet 15 gradually increases from the direction closer to the mixing chamber 14 to the direction away from the mixing chamber 14, which also increases the coating diffusion area, allowing the coating to be evenly distributed on the sidewall 18 of the pipe to be repaired. It should also be noted that... (See also...) Figure 1 as well as Figure 6 The base 17 protrudes towards the mixing chamber 14 on one side to form a conical part 20. The paint is reflected by the conical surface of the conical part 20 to each outlet 15 to divert the paint. On the other hand, the tip of the conical part 20 also plays a certain cutting role on the paint, which is beneficial to the dispersion and diversion of the paint.

[0054] Furthermore, the driving component 28 includes a driver 24 disposed on the mounting base 2 and a transmission component, which includes a driving gear 25 and a driven gear 26 meshing together. The driver 24 drives the driving gear 25, and the driven gear 26 drives the rotating component 16, so that the rotating component 16 has a travel stroke for rotation along its axial direction. It should be noted that in this embodiment, the driver 24 is a motor, which can be a pneumatic motor or an electric motor, and the driving gear 25 and the driven gear 26 are helical gears, which provide smooth transmission and low noise.

[0055] Furthermore, the mounting base 2 has a mounting cavity 5, in which the nozzle mechanism 3 and the drive component 28 are both located, providing a certain degree of protection for the nozzle mechanism 3 and the drive component 28. The mounting base 2 has an opening 6 on the side near the rotating component 16 that communicates with the mounting cavity 5. The rotating component 16 also includes a fixing plate 21 on the side wall 18 away from the base 17. The output shaft of the transmission gear extends out of the opening 6 and is drivenly connected to the fixing plate 21. The fixing plate 21 has a mounting hole 22 communicating with the mixing chamber 14. The nozzle 10 passes through the opening 6 and the mounting hole 22 in sequence and extends into the mixing chamber 14 to spray the mixed material into the mixing chamber 14. To improve the stability of the drive, a bearing 23 is also provided at the opening 6, and the bearing 23 is sleeved with the output shaft of the transmission gear. The rotating component 16 also includes a flange 27 on the fixing plate 21, which is connected to the bearing 23.

[0056] Traditional nozzles use a manual wrench to control material spraying. In the technical solution provided by this invention, the nozzle mechanism 3 includes a first air pipe and a second air pipe housed within the housing 9. Both the first and second air pipes are connected to the nozzle 10. The first air pipe is equipped with a pneumatic valve, and the second air pipe is equipped with a solenoid valve 13. The first air pipe is used for cleaning the nozzle, and the second air pipe is used for spraying material. (See also...) Figures 3-4 The nozzle mechanism 3 has three tubular interfaces at its upper end. The two interfaces on both sides serve as feed inlets 12, connected to the mixing chamber 11. The middle interface connects to the first air pipe (neither the first nor the second air pipe is shown in the figure). When the nozzle device 1 is working, the first air pipe is always open, continuously supplying compressed air to the nozzle 10, which can clean the nozzle 10 and prevent blockage. The second air pipe is controlled by a solenoid valve 13. When the solenoid valve 13 is open, the second air pipe is open, and material will be sprayed out of the nozzle 10. When the solenoid valve 13 is closed, the second air pipe is closed, and no material will be sprayed out of the nozzle 10. This invention uses a solenoid valve 13 to control the spraying of materials, freeing up hands and allowing for fully automatic control of the nozzle device 1.

[0057] Furthermore, a transition fixing block 7 is provided on the side of the mounting base 2 away from the rotating part 16. The transition fixing block 7 is equipped with an air connection, a hydraulic connection, and an electrical connection. The first air pipe and the second air pipe are both connected to the air connection. The feed port 12 is connected to the hydraulic connection through a feed pipe. The solenoid valve 13 is connected to the electrical connection. In addition, two lifting rings 8 are also provided on the side of the mounting base 2 away from the rotating part 16.

[0058] The working principle of the nozzle device 1 provided by the present invention is roughly as follows (taking polyurea elastomer spraying as an example): The spraying device is equipped with a lifting ring 8. When it is necessary to repair or inspect the pipeline or well, the lifting wire rope is threaded into the lifting ring 8 in advance to fix the entire device vertically (the pipeline extends vertically). The uniform upward and downward process of the nozzle device 1 is achieved by the lifting winch on the polyurea spraying vehicle; or the nozzle device 1 is fixed on the pipeline repair support, and then it is dragged horizontally in the pipeline (the pipeline extends vertically) by the winch at a uniform speed.

[0059] During polyurea spraying, the driver 24 is first turned on to rotate at high speed, thereby driving the rotary spraying mechanism 4 to rotate at high speed. Then, the air connection is turned on to allow air to flow between the first and second air pipes, and the power supply to the solenoid valve 13 is turned on. Then, the pneumatic valve is turned on to connect the first air pipe to the nozzle 10, realizing the pneumatic cleaning process of the nozzle 10. Then, the solenoid valve 13 is turned on to control the nozzle 10 to be in the open state. Next, the discharge switch is turned on through the hydraulic connection. At this time, material A and material B arrive at the mixing chamber 11 through the conveying pipe and are sprayed onto the rotating part 16, which is rotating at high speed, through the nozzle 10. The high-speed rotation of the rotating part 16 evenly sprays the mixed polyurea material onto the inspection well or pipe wall to be repaired. Due to the fast drying characteristics of polyurea material, the material gels in about 10 seconds, forming a dense and uniform polyurea coating on the inner wall of the pipe.

[0060] After the polyurea spraying operation is completed, first turn off the discharge switch, then turn off the power to the solenoid valve 13. The nozzle 10 stops spraying. At this time, the first air path begins the pneumatic cleaning process for the nozzle 10. After about 5 minutes, the cleaning of the nozzle 10 is completed. At this time, the operator turns off all air and power sources of the device, and the spraying is completed.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A nozzle device for repairing pipelines and inspection wells, characterized in that, The nozzle assembly includes: Mounting base; A nozzle mechanism is provided on the mounting base. The nozzle mechanism has a housing and a nozzle disposed on the housing. The housing has a mixing chamber, and the nozzle communicates with the mixing chamber. The housing also has multiple feed inlets communicating with the mixing chamber. The mixing chamber is used for mixing multiple materials; and... A rotary spraying mechanism is provided on the mounting base. The rotary spraying mechanism has a mixing chamber communicating with the nozzle. The rotary spraying mechanism is provided with multiple discharge ports communicating with the mixing chamber. The rotary spraying mechanism has a movable stroke that rotates along its axial direction, which is used to throw the mixed material out from each of the discharge ports during the rotation process. The rotary spraying mechanism includes a rotating component and a driving component, wherein the driving component drives the rotating component to give the rotating component a movable stroke for rotating along its axial direction. The rotating component includes a base and a sidewall disposed along the periphery of the base. The sidewall and the base enclose the mixing cavity, and a plurality of discharge ports communicating with the mixing cavity are provided on the sidewall. Each of the aforementioned discharge ports is disposed through the sidewall to divide the sidewall into multiple spaced material distribution blocks, and the width of each of the aforementioned material distribution blocks gradually decreases from the direction away from the mixing chamber to the direction closer to the mixing chamber; The driving component includes a driver and a transmission component disposed on the mounting base. The transmission component includes a driving gear and a driven gear that are meshed together. The driver drives the driving gear, and the driven gear drives the rotating component so that the rotating component has a travel stroke that rotates along its axial direction. The mounting base has a mounting cavity, and the nozzle mechanism and the driving component are both disposed within the mounting cavity; The mounting base has an opening communicating with the mounting cavity on the side near the rotating member. The rotating member also includes a fixing plate on the side wall away from the base. The output shaft of the transmission gear extends out of the opening and is drivenly connected to the fixing plate. The nozzle mechanism includes a first air pipe and a second air pipe disposed within the housing. Both the first air pipe and the second air pipe are connected to the nozzle. The first air pipe is equipped with a pneumatic valve, and the second air pipe is equipped with a solenoid valve. The first air pipe is used to clean the nozzle, and the second air pipe is used to spray out materials.

2. The nozzle device according to claim 1, characterized in that, The base has a tapered section that protrudes towards the mixing chamber on the side closest to the mixing chamber.

3. The nozzle device according to claim 1, characterized in that, The fixing plate has a mounting hole that communicates with the mixing chamber. The nozzle passes through the opening and the mounting hole in sequence and extends into the mixing chamber.

4. The nozzle device according to claim 3, characterized in that, The opening is also provided with a bearing, which is sleeved with the output shaft of the transmission gear. The rotating component also includes a flange disposed on the fixed plate, and the flange is connected to the bearing.

5. The nozzle device according to claim 1, characterized in that, The mounting base is provided with a transition fixing block on the side away from the rotating component. The transition fixing block is provided with an air circuit connector, a hydraulic connector and an electrical connector. The first air pipe and the second air pipe are both connected to the air circuit connector. The feed port is connected to the hydraulic connector through a feed pipe. The solenoid valve is connected to the electrical connector.

6. The nozzle device according to claim 1, characterized in that, The mounting base is also provided with two lifting rings on the side away from the rotating component.

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