A line cleaning showerhead and cleaning system including the same

Abstract

The present application belongs to the field of pipeline cleaning, and particularly relates to a pipeline cleaning spray head and a cleaning system comprising the spray head. The spray gun comprises a coaxially arranged first air pipe and a receiving part. A first conical sealing surface and a stopper are arranged on the outer ring of the first air pipe. The spray nozzle comprises a second air pipe. The outer ring of the second air pipe is provided with a second sealing conical surface. A groove, a clamping groove and a connecting part are sequentially arranged on the inner ring of the second air pipe. The first sealing conical surface cooperates with the second sealing conical surface to form a primary seal. The end surface of the stopper cooperates with the bottom of the groove to form a secondary seal. The receiving part is clamped in the clamping groove. The pipeline cleaning spray head is newly designed for the air passage, which can improve the overall sealing performance of the pipeline cleaning spray head and improve the utilization efficiency of compressed air.

Description

Technical Field

[0001] This invention belongs to the field of pipeline cleaning, specifically relating to a pipeline cleaning nozzle and a cleaning system including the nozzle. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] The inventors discovered two common methods for cleaning the inside of pipes using sponge bullets: the sponge bullet cleaning method and the sponge projectile cleaning method. The sponge bullet cleaning method utilizes the high-speed movement of sponge bullets within the pipes to push out dirt. This method relies on high-pressure water flow to propel the soaked sponge bullets at high speed within the pipes, thus cleaning the inside. The specific operation involves placing the sponge bullet in the inlet pipe of the underfloor heating system, flushing it into a drain bucket with the water flow, and then rinsing the pipes with clean water. However, this method carries the risk of leaks and bullet jamming, especially for aging manifolds, where disassembly may exacerbate leaks. The sponge projectile cleaning method, on the other hand, uses a pneumatic cleaning device to launch specially designed sponge projectiles into the pipes. This technology achieves a physical cleaning effect through the friction between the sponge projectile and the pipes, easily resolving pipe contamination problems.

[0004] However, the cleaning method for sponge projectiles usually uses a cleaning nozzle, which generally includes a spray gun and a nozzle. The spray gun is connected to a high-pressure air source, and the nozzle receives the sponge projectiles and connects to the pipeline. However, the sealing effect between the spray gun and the nozzle is poor, and there is a risk of air leakage after long-term use, which affects the utilization efficiency of compressed air. There are also problems such as air leakage at the nozzle-pipeline connection and the projectiles being easy to fall off. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a pipeline cleaning nozzle and a cleaning system including the nozzle, which solves at least one technical problem of the prior art. The pipeline cleaning nozzle has a completely new design of the air passage, which can improve the overall sealing performance of the pipeline cleaning nozzle and improve the utilization efficiency of compressed air.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] In a first aspect, embodiments of the present invention provide a pipeline cleaning nozzle, comprising a spray gun and a nozzle.

[0008] The spray gun includes a first air pipe and a receiving part arranged coaxially, and a first sealing cone surface and a stop are provided on the outer ring of the first air pipe; the first

[0009] The nozzle includes a second air tube, the outer ring of which is provided with a second sealing cone surface, and the inner ring of which is provided with a groove, a slot and a connecting part in sequence;

[0010] The first sealing cone surface and the second sealing cone surface cooperate to form a primary seal, and the end face of the stop cooperates with the bottom of the groove to form a secondary seal; the receiving part is fitted into the slot.

[0011] The spray gun and nozzle in the above-mentioned cleaning nozzle adopt a two-stage sealing structure. After the cavity is sealed, compressed air is ejected from the air passage, pushing the sponge bullet through the cleaned pipeline, thereby cleaning the pipeline. This solves the air leakage problem in the prior art, improves the overall sealing performance of the device, and improves the utilization efficiency of compressed air.

[0012] As a further technical solution, the connecting part is used to install the pipeline to be cleaned; and the diameter of the connecting part is slightly larger than the outer diameter of the pipeline to be cleaned; forming an annular gap, when the airflow passes through the air passage quickly, the narrow gap will have a Venturi effect, ensuring a seal when the nozzle is connected to the pipeline to be cleaned; that is, it solves the problem that the nozzle and the pipeline to be cleaned cannot guarantee a complete seal when connected, and the gap will reduce the ejection pressure of the compressed air, thus reducing gas leakage.

[0013] As a further technical solution, the depth of the connection portion is greater than 5 times the wall thickness of the pipe being cleaned, further ensuring a seal when the nozzle is connected to the pipe being cleaned.

[0014] As a further technical solution, the end face of the stop is made of elastic material. When the stop comes into contact with the groove, the elastic material is compressed, and the two form an end seal, which further ensures the sealing effect.

[0015] As a further technical solution, the first air tube and the second air tube are installed coaxially.

[0016] As a further technical solution, the receiving part is semi-circular.

[0017] As a further technical solution, the inner diameter of the receiving part is equal to the inner diameter of the pipe being cleaned, and the outer diameter is greater than the outer diameter of the first air tube; the receiving part adopts an arc with the same diameter as the pipe being cleaned, so that the bullet can smoothly enter the pipe being cleaned and will not fall out.

[0018] As a further technical solution, the outer diameter of the stop is smaller than the minimum diameter of the second sealing cone surface and smaller than the diameter of the groove.

[0019] As a further technical solution, the spray gun is integrally molded, and / or the nozzle is integrally molded.

[0020] Secondly, embodiments of the present invention also provide a cleaning system including the nozzle, comprising the aforementioned pipeline cleaning nozzle, wherein the spray gun is connected to a high-pressure air source, and the nozzle receives sponge bullets and connects to the pipeline to be cleaned.

[0021] The beneficial effects of the above embodiments of the present invention are as follows:

[0022] The cleaning nozzle proposed in this invention employs a two-stage sealing structure for its spray gun and nozzle. First, the second sealing cone surface of the nozzle engages with the first sealing cone surface of the spray gun to form a primary seal. This cone surface design maximizes the contact area for surfaces with equal wall thickness. Second, the end face of the stop of the spray gun engages with the bottom of the groove in the nozzle to form a secondary seal. As the nozzle advances, the stop contacts the groove inside the nozzle, creating a secondary seal. After the cavity is sealed, compressed air is ejected from the air passage, propelling the sponge bullet through the cleaned pipeline, thus cleaning the pipeline. This solves the air leakage problem in existing technologies, improves the overall sealing performance of the device, and increases the utilization efficiency of compressed air.

[0023] Furthermore, the present invention provides a connecting part of a certain length on the nozzle, the diameter of which is slightly larger than the outer diameter of the pipe being cleaned, forming an annular gap. When the airflow passes through the air passage quickly, the narrow gap will exhibit a Venturi effect, ensuring a seal when the nozzle is connected to the pipe being cleaned. This solves the problem that a complete seal cannot be guaranteed when the nozzle is connected to the pipe being cleaned, and the gap will reduce the ejection pressure of the compressed air, thus reducing gas leakage.

[0024] Furthermore, the surfaces where the stop and the groove mate are covered with elastic materials such as rubber. When the stop and the groove come into contact, the elastic material is compressed, and the two form an end seal, which further ensures the sealing effect.

[0025] Furthermore, the loading process requires a structure to receive the bullet. To ensure that the bullet is aligned with the center of the airway after being inserted and is not easily dropped, an arc-shaped support with the same diameter as the tube being cleaned is used, allowing the bullet to enter the tube being cleaned smoothly without falling out. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the spray gun of the present invention;

[0028] Figure 2 yes Figure 1 A sectional view;

[0029] Figure 3 This is a three-dimensional structural schematic diagram of the nozzle of the present invention;

[0030] Figure 4 yes Figure 3 A sectional view;

[0031] Figure 5 This is a schematic diagram showing the working state of the spray gun and nozzle;

[0032] Figure 6 yes Figure 5 A sectional view;

[0033] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0034] 1. Spray gun, 11. First sealing cone surface, 12. Stop, 13. First air passage, 14. Receiving part, 15. Body;

[0035] 2 Nozzle, 21 Second sealing cone surface, 22 Second air passage, 23 Groove, 24 Slot, 25 Connecting part, 26 Body. Detailed Implementation

[0036] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component 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 this invention.

[0039] As described in the background section, existing technologies have shortcomings. To address these technical problems, this invention proposes a pipeline cleaning nozzle and a cleaning system including the nozzle. To achieve airtightness and suitability for automated cleaning, the cleaning nozzle needs to solve three technical problems: the cartridge loading problem, the nozzle-pipeline connection problem, and the sealing problem between the spray gun and the nozzle. Specifically, the cartridge loading requires a structure to receive the cartridge. To ensure the cartridge is aligned with the center of the air passage and does not easily fall out after insertion, an arc-shaped receiving portion with the same diameter as the pipe being cleaned is used. The nozzle-pipeline connection... At the connection point, the air passage and the inner diameter of the pipe being cleaned are equal. Since a complete seal cannot be guaranteed when the nozzle connects to the pipe, gaps can reduce the ejection pressure of the compressed air. Therefore, a connection section of a certain length is provided at the nozzle to reduce gas leakage. When the airflow passes rapidly through the air passage, the narrow gap exhibits a Venturi effect, ensuring a tight seal. The nozzle exterior uses a conical seal, which increases the contact area for equal wall thicknesses. The internal spray gun end has a circumferential stop, with elastic materials such as rubber on the outside. When the nozzle advances, the stop contacts the protrusion formed by the groove inside the nozzle, creating a secondary seal. After the cavity is sealed, compressed air is ejected from the air passage, pushing the sponge bullet through the pipe being cleaned, thus cleaning the pipe.

[0040] Specifically, in a typical embodiment of the present invention, such as Figure 5 , Figure 6 As shown, the pipeline cleaning nozzle disclosed in this embodiment includes a spray gun 1 and a nozzle 2. A two-stage seal is formed between the spray gun 1 and the nozzle 2 to achieve a sealed connection between the spray gun 1 and the nozzle 2. The nozzle 2 is also sealed to the pipeline being cleaned. The specific structures of the spray gun 1 and the nozzle 2 are as follows:

[0041] In this embodiment, the spray gun 1 is as follows: Figure 1 , Figure 2 As shown, it includes a body 15, which is a hollow tube structure with a first sealing cone surface 11, a stop 12, a first air passage 13, and a receiving part 14. The first air passage 13 and the receiving part 14 are coaxially arranged to ensure the coaxiality of the entire device. A ring structure is provided at the end of the first air passage 13 near the receiving part 14, and a ring of the first sealing cone surface 11 is provided inward at the end of the ring structure near the receiving part 14. A stop 12 is also provided at the end of the first air passage 13 near the receiving part 14. Along the axial direction of the first air passage 13, the stop 12 is partially located inside the ring structure and partially located outside the ring structure. The stop 12 and the ring structure are at a certain distance in both the radial and axial directions to reserve sufficient space for the installation of the second sealing cone surface 21 of the nozzle 2. The outer diameter of the stop 12 is smaller than the minimum radius of the first sealing cone surface 11, and the outer diameter of the stop 12 is larger than the outer diameter of the receiving part 14, forming a step between them.

[0042] Preferably, the angle between the first sealing cone surface 11 and the axis of the first air passage 13 is less than 45°.

[0043] Furthermore, the receiving part 14 is a semi-cylindrical structure with an inner diameter larger than that of the first air passage 13, forming a step between them. This step can limit the nozzle 2.

[0044] Furthermore, the spray gun adopts an integrated molding process, that is, the first sealing cone surface 11, the stop 12, the first air passage 13, and the receiving part 14 are integrally molded.

[0045] The nozzle 2 described in this embodiment is as follows: Figure 3 , Figure 4 As shown, it includes a body 26, which includes a second sealing cone surface 21, a second air passage 22, a groove 23, a slot 24, and a connecting part 25. The body 26 is a hollow tube structure with the second air passage 23 formed inside. Inside the second air passage 22, the groove 23, the slot 24, and the connecting part 25 are formed sequentially from left to right. That is, the groove 23 is provided at one end of the inner wall of the second air passage 22, the connecting part 25 is provided at the other end, and the slot 24 is in the middle. The bottom of the groove 23 is used to cooperate with the end face of the stop 12 to form a secondary seal to prevent gas leakage. The slot 24 is used to install the receiving part, so the slot 24 is also semi-cylindrical. The radius of the slot 24 is larger than the radius of the second air passage 22, and a step is formed between the two, which limits the end of the receiving part. The connecting part 25 is used to install the pipeline to be cleaned. Therefore, the connecting part 25 is hollow and is located at one end of the outer wall of the second air passage 22 (see attached diagram). Figure 4 A second sealing cone 21 is provided at the left end of the middle section. The second sealing cone 21 is used to cooperate with the first sealing cone 11 to form a primary seal and prevent gas leakage.

[0046] Furthermore, the diameter of the groove 23 is larger than the diameter of the second air passage 22, forming a step between them. On the one hand, it cooperates with the end face of the stop 12 to form a secondary seal, and on the other hand, it positions the spray gun 1.

[0047] Preferably, the angle between the second sealing cone surface 21 and the axis of the second air passage 22 is less than 45°, and the tilt angle of the second sealing cone surface 21 is the same as the tilt angle of the first sealing cone surface 11.

[0048] Preferably, the nozzle is integrally molded, which simplifies the molding process.

[0049] The specific cooperation relationship between nozzle 2 and spray gun 1 is as follows: Figure 5 , Figure 6 As shown, the details are as follows:

[0050] The first sealing cone surface 11 of the spray gun 1 is in contact with the second sealing cone surface 21 of the nozzle 2 to form a primary seal; and preferably, the cone angle between the first sealing cone surface 11 and the second sealing cone surface 21 is less than 45° to increase the contact area.

[0051] The end face of the stop 12 fits with the bottom of the groove 2. The end face of the stop 12 is made of elastic material. When it comes into contact with the groove 2, the elastic material is compressed, and the two form an end seal.

[0052] The receiving part 14 is used to receive the sponge bullet. The receiving part 14 is semi-circular, and the inner diameter of the receiving part 14 is equal to the inner diameter of the pipeline being cleaned, so as to effectively receive the sponge bullet and prevent the sponge bullet from falling off during the advancement process.

[0053] The receiving part 14 fits into the slot 24, and the first air passage 13 and the second air passage 22 are coaxial, ensuring effective contact of compressed gas with the sponge bullet.

[0054] The inner diameter of the connecting part 25 is slightly larger than the outer diameter of the pipe being cleaned (preferably the gap is 1mm-2mm). An annular gap is formed between the inner wall of the connecting part 25 and the outer wall of the pipe being cleaned, and the depth of the connecting part 25 is greater than 5 times the wall thickness. That is, the length of the nozzle is extended as a whole. When the airflow passes through the second air passage quickly, the venturi effect will occur in the narrow gap. At this time, the airflow speed is the fastest and the pressure is the lowest in the narrow gap, ensuring the seal between the pipe being cleaned and the nozzle 2 and preventing gas leakage.

[0055] The connecting part 25 and the channel 26 are stepped transitions, and the steps are used to support the end face of the pipeline.

[0056] When using the above-mentioned nozzles for single-pipe cleaning, preparation work is required first, including connecting the air source, selecting a nozzle with an appropriate radius according to the pipe diameter, and using sponge projectiles. After assembling the equipment, a test shot should be performed to check for leaks at the connections between the air source, cleaning equipment, and pipeline, and any leaks should be addressed. Then, the sponge projectiles are inserted to begin cleaning. The color change of the sponge projectiles is used to determine if further cleaning is needed, until the pipe is clean.

[0057] The cleaning nozzle proposed in this embodiment adopts a two-stage sealing structure for the spray gun and nozzle. The second sealing cone surface 21 of the nozzle 2 and the first sealing cone surface 11 of the spray gun 1 cooperate to form a first-stage seal. The cone surface design facilitates the increase of the contact area of ​​the surface under the condition of equal wall thickness. The end face of the stop of the spray gun cooperates with the bottom of the groove of the nozzle to form a second-stage seal. When the nozzle moves forward, the stop contacts the groove inside the nozzle to form a second-stage seal. After the cavity is sealed, compressed air is ejected from the air passage, pushing the sponge bullet through the cleaned pipeline, thereby cleaning the pipeline. This solves the air leakage problem in the prior art, improves the overall sealing performance of the device, and improves the utilization efficiency of compressed air.

[0058] The surface of the stop 12 and the groove 23 of the present invention is covered with an elastic material such as rubber. When the stop 12 and the groove 23 come into contact, the elastic material is compressed, and the two form an end seal, which further ensures the sealing effect.

[0059] The ammunition loading mechanism of this invention requires a structure to receive the ammunition. To ensure that the ammunition is aligned with the center of the airway after being inserted and is not easily dropped, an arc with the same diameter as the tube being cleaned is used to receive it, so that the ammunition can smoothly enter the tube being cleaned and will not fall out.

[0060] The present invention provides a connecting part 25 of a certain length on the nozzle 2. The diameter of the connecting part 25 is slightly larger than the outer diameter of the pipe being cleaned, forming an annular gap. When the airflow passes through the air passage quickly, the narrow gap will exhibit a Venturi effect, ensuring a seal when the nozzle is connected to the pipe being cleaned. This solves the problem that the nozzle and the pipe being cleaned cannot guarantee a complete seal when connected, and the gap will reduce the ejection pressure of the compressed air, thus reducing gas leakage.

[0061] Furthermore, this embodiment also provides a cleaning system, which includes the pipeline cleaning nozzle described above; wherein, the spray gun is connected to a high-pressure air source, and the nozzle receives sponge bullets and connects to the pipeline to be cleaned; since the cleaning system is equipped with the pipeline cleaning nozzle described above, the cleaning system also has all the advantages described above.

[0062] It should be noted that the cleaning system and pipeline cleaning nozzle in this embodiment can be used to clean pipelines in many fields; specifically, it can be applied to various complex pipeline structures, such as 90-degree, T-shaped, ring-shaped, U-shaped, serpentine, etc., and can effectively remove water, mud, impurities on the inner wall of the pipeline, and residual impurities inside the pipeline.

[0063] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pipeline cleaning nozzle, comprising a spray gun and a nozzle, characterized in that, The spray gun includes a first air pipe and a receiving part arranged coaxially, and a first sealing cone surface and a stop are provided on the outer ring of the first air pipe; The nozzle includes a second air tube, the outer ring of which is provided with a second sealing cone surface, and the inner ring of which is provided with a groove, a slot and a connecting part in sequence; The first sealing cone surface mates with the second sealing cone surface to form a primary seal; the end face of the stop mates with the bottom of the groove to form a secondary seal; the receiving part is fitted into the groove. The connecting part is used to install the pipeline to be cleaned; and the diameter of the connecting part is slightly larger than the outer diameter of the pipeline to be cleaned. The receiving part is used to receive the sponge bullet; the receiving part is semi-circular; The inner diameter of the receiving part is equal to the inner diameter of the pipe being cleaned, and the outer diameter is greater than the outer diameter of the first air pipe.

2. The pipeline cleaning nozzle as described in claim 1, characterized in that, The depth of the connection is greater than 5 times the wall thickness of the pipe being cleaned.

3. The pipeline cleaning nozzle as described in claim 1, characterized in that, The end face of the stop is made of an elastic material.

4. The pipeline cleaning nozzle as described in claim 1 or 3, characterized in that, The outer diameter of the stop is smaller than the minimum diameter of the second sealing cone surface and smaller than the diameter of the groove.

5. The pipeline cleaning nozzle as described in claim 1, characterized in that, The first and second air tubes are installed coaxially.

6. The pipeline cleaning nozzle as described in claim 1, characterized in that, The spray gun is integrally molded; and / or the nozzle is integrally molded.

7. A cleaning system comprising a pipeline cleaning nozzle as described in any one of claims 1-6.

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