High-pressure water jet cleaning nozzle with high efficiency

Abstract

The utility model discloses a high-pressure water jet cleaning spray head with high efficiency, which comprises a spray head seat and a plurality of nozzles, the spray head seat is provided with a water injection cavity, a plurality of annularly distributed first side cavities and a plurality of annularly distributed second side cavities, and the first side cavities and the second side cavities are sequentially arranged along the axis direction of the water injection cavity and are crosswise distributed; the first side cavity and the second side cavity are also communicated with the water injection cavity and have different inclination angles relative to the water injection cavity; the nozzles are connected to the first side cavities or the second side cavities in a one-to-one correspondence mode and used for spraying water flow towards the same side. The nozzle can reduce the atomization effect, increase the impact force and impact area of water jet, and improve the cleaning efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of cleaning machine accessories, specifically relating to a high-efficiency high-pressure water jet cleaning nozzle. Background Technology

[0002] Shell-and-tube heat exchangers are widely used in chemical production, industrial production, boilers, air conditioning and other fields. Their long-term operation will cause a lot of dirt such as coking, oil stains, scale, deposits, corrosion products and sludge to be generated in the pipes. If the dirt is not removed in time, it will lead to reduced equipment efficiency, increased energy consumption and material consumption, and shortened life. In severe cases, it will cause process interruption and the equipment will face the danger of maintenance, downtime or scrapping and replacement, directly causing various economic losses.

[0003] Currently, high-pressure water jet cleaning units are one of the most common methods for cleaning scale in shell-and-tube heat exchangers. Compared with traditional chemical and manual cleaning, it offers faster cleaning speed, higher quality, lower cost, and does not cause environmental pollution or corrosion to equipment. The high-pressure water jet nozzle is a key component of the high-pressure water jet cleaning unit, and its structure directly affects the cleaning effect. However, traditional high-pressure water jet nozzles often suffer from uneven flow transitions and significant water flow energy loss due to their internal flow channel profiles. Furthermore, the nozzles are typically installed in a single row, resulting in severe atomization during actual cleaning, reduced water impact force and impact area, decreased cleaning efficiency, and increased cleaning time. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by proposing a high-efficiency high-pressure water jet cleaning nozzle that can reduce atomization, increase the impact force and impact area of ​​the water jet, and improve cleaning efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model proposes a high-efficiency high-pressure water jet cleaning nozzle, comprising a nozzle base and several nozzles, wherein:

[0007] The nozzle seat has a water injection chamber, several annularly distributed first side chambers and several annularly distributed second side chambers. The first side chambers and second side chambers are arranged sequentially and intersectingly along the axial direction of the water injection chamber. The first side chambers and second side chambers are also connected to the water injection chamber and have different inclination angles relative to the water injection chamber.

[0008] The nozzles are connected one-to-one to the first or second side cavity and are used to spray water flow toward the same side.

[0009] Preferably, the second side cavity and the first side cavity are arranged sequentially along the water flow direction in the water injection cavity, and the angle between the axis of the first side cavity and the axis of the water injection cavity is greater than the angle between the axis of the second side cavity and the axis of the water injection cavity.

[0010] Preferably, the angle between the axis of the first side cavity and the axis of the water injection cavity is 60°, and the angle between the axis of the second side cavity and the axis of the water injection cavity is 45°.

[0011] Preferably, the nozzle has a guide cavity, a pressurizing cavity and a jet cavity that are connected sequentially along the water flow direction. The guide cavity and the jet cavity are both cylindrical holes, and the outlet end of the jet cavity is also chamfered. The pressurizing cavity is a conical hole.

[0012] Preferably, the diameter of the first side cavity and the diameter of the second side cavity are the same as the diameter of the nozzle's guide cavity.

[0013] Preferably, the diameter of the guide cavity is 5.5 mm to 7 mm, and the diameter of the jet cavity is 0.9 mm to 1.3 mm.

[0014] Preferably, there are four first side cavities and four second side cavities.

[0015] Preferably, the side of the water injection cavity away from the inlet end is conical, and the cone angle is 100° to 120°.

[0016] Preferably, the nozzle holder is further provided with a first interface, which is used to connect to the water pipe thread and is sealed with Teflon tape and gasket.

[0017] Preferably, a second interface is coaxially provided on the first side cavity and the second side cavity, the second interface being used for threaded connection with the nozzle and sealed with raw rubber tape.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1) The nozzle and its nozzle structure are simple, easy to install and disassemble, and easy to maintain. The nozzle is equipped with two rows of nozzles. When the inclination angle of the nozzle on the first side cavity is greater than that of the nozzle on the second side cavity, the nozzle on the first side cavity has a shorter jet target distance, the jet is more concentrated, and the impact force is stronger, which can be used to break up dirt. The nozzle on the second side cavity has a longer jet target distance, so it has a larger impact area, which can be used to clean, unclog and polish pipes. It can increase the impact force and impact area of ​​the water jet, and improve the cleaning efficiency.

[0020] 2) The cone angle at one end of the water injection chamber is 1.5 to 2 times the inclination angle of the first side chamber. The inclination angle of each side chamber relative to the water injection chamber is the same as the inclination angle of the nozzle relative to the water injection chamber. This can reduce the resistance loss of water flow between the water injection chamber channel and the side chamber, and maintain the stability of water flow. The diameter of each side chamber is the same as the diameter of the nozzle guide chamber, which avoids damage to the nozzle connection by water flow. Moreover, the same diameter of each side chamber can evenly distribute water flow, improve the stability of water flow, and reduce atomization effect.

[0021] 3) The internal flow channel of the nozzle has a conical straight diffusion shape, that is, the high-pressure water flow enters the pressurization chamber from the guide chamber and then enters the jet chamber. The flow channel is smooth and has a small outlet diameter, which improves the stability of the water jet, reduces the atomization effect, and improves the cleaning efficiency. In addition, the outlet end of the jet chamber is also chamfered, which makes the energy concentration high and the focusing effect better. This can improve the hydrodynamic performance of the nozzle, improve the spraying efficiency, extend the service life, and ensure the stability and accuracy of the spray. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the high-efficiency high-pressure water jet cleaning nozzle of this utility model;

[0023] Figure 2 This is a cross-sectional view of the high-efficiency high-pressure water jet cleaning nozzle of this utility model along the first side cavity;

[0024] Figure 3 This is a cross-sectional view of the high-efficiency high-pressure water jet cleaning nozzle of this utility model along the second side cavity.

[0025] Explanation of reference numerals in the attached drawings: 1. Nozzle holder; 2. Nozzle; 3. First interface; 4. Water injection chamber; 5. First side chamber; 6. Guide chamber; 7. Pressurization chamber; 8. Jet chamber; 9. Second interface; 10. Second side chamber. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application.

[0028] like Figures 1-3 As shown, a high-efficiency high-pressure water jet cleaning nozzle includes a nozzle base 1 and several nozzles 2, wherein:

[0029] The nozzle seat 1 has a water injection chamber 4, several annularly distributed first side chambers 5 and several annularly distributed second side chambers 10. The first side chambers 5 and the second side chambers 10 are arranged sequentially and intersectingly along the axial direction of the water injection chamber 4. The first side chambers 5 and the second side chambers 10 are also connected to the water injection chamber 4 and have different inclination angles relative to the water injection chamber 4.

[0030] Nozzle 2 is connected to the first side cavity 5 or the second side cavity 10 in a one-to-one correspondence, and is used to spray water flow toward the same side.

[0031] The nozzle includes a nozzle base 1 and several nozzles 2. The nozzles 2 are installed on the first side cavity 5 or the second side cavity 10 to form two rows, and the two rows of nozzles 2 are intersected with each other. One end of the nozzle base 1 is provided with a water inlet connection port that communicates with the water injection cavity 4. The axis of the first side cavity 5 or the second side cavity 10 is inclined to the axis of the water injection cavity 4. The axis of the nozzle 2 is coaxial with the axis of the corresponding first side cavity 5 or the second side cavity 10. That is, the angle between the axis of the first side cavity 5 and the axis of the water injection cavity 4 is equal to the angle between the axis of the corresponding nozzle and the axis of the water injection cavity 4. The angle between the axis of the second side cavity 10 and the axis of the water injection cavity 4 is equal to the angle between the axis of the corresponding nozzle and the axis of the water injection cavity 4.

[0032] In one embodiment, the second side cavity 10 and the first side cavity 5 are arranged sequentially along the water flow direction in the water injection cavity 4, and the angle between the axis of the first side cavity 5 and the axis of the water injection cavity 4 is greater than the angle between the axis of the second side cavity 10 and the axis of the water injection cavity 4.

[0033] In one embodiment, the angle between the axis of the first side cavity 5 and the axis of the water injection cavity 4 is 60°, and the angle between the axis of the second side cavity 10 and the axis of the water injection cavity 4 is 45°.

[0034] In one embodiment, the nozzle 2 has a guide cavity 6, a pressurizing cavity 7, and a jet cavity 8 connected sequentially along the water flow direction. Both the guide cavity 6 and the jet cavity 8 are cylindrical holes, and the outlet end of the jet cavity 8 is chamfered. The pressurizing cavity 7 is a conical hole. The internal flow channel profile of the nozzle is a conical-straight-diffusing shape, meaning that the high-pressure water flow enters the pressurizing cavity from the guide cavity and then enters the jet cavity. The flow channel is smooth and has a small outlet diameter, improving the stability of the water jet, reducing atomization, and increasing cleaning efficiency. The chamfered outlet end of the jet cavity 8 further enhances energy concentration and improves focusing effect, thereby improving the nozzle's hydrodynamic performance, increasing spray efficiency, extending service life, and ensuring spray stability and accuracy.

[0035] In one embodiment, the diameter of the first side cavity 5 and the diameter of the second side cavity 10 are both the same as the diameter of the flow guide cavity 6 of the nozzle 2.

[0036] In one embodiment, the orifice diameter of the guide cavity 6 is 5.5 mm to 7 mm, and the orifice diameter of the jet cavity 8 is 0.9 mm to 1.3 mm. Preferably, the orifice diameter of the guide cavity 6 is 6.4 mm, and the orifice diameter of the jet cavity 8 is 1.0 mm. The two ends of the pressurization cavity 7 are respectively connected to the guide cavity 6 and the jet cavity 8.

[0037] In one embodiment, there are four first side chambers 5 and four second side chambers 10. The nozzle is equipped with two rows of nozzles for cleaning (i.e., the nozzles 2 on the multiple first side chambers 5 are in the first row, and the nozzles 2 on the multiple second side chambers 10 are in the second row). Preferably, four nozzles 2 are installed in each row for cleaning, and the positions of the first row and the second row of nozzles are interleaved.

[0038] In one embodiment, the side of the water injection chamber 4 furthest from the inlet end is conical, with a cone angle of 100° to 120°. The conical shape at one end of the water injection chamber 4 prevents the fluid (such as water) from suddenly encountering resistance or undergoing abrupt changes during its entry into the nozzle, thus reducing the possibility of turbulence and unstable flow. The cone angle can be 1.5 to 2 times the inclination angle of the first side chamber; in this embodiment, it is preferably 120°, and its cone angle is twice the angle between the first side chamber 5 and the axis of the water injection chamber 4.

[0039] In one embodiment, the nozzle holder 1 is further provided with a first interface 3, which is used for threaded connection with a water pipe and sealed with Teflon tape and a gasket. It is easy to understand that the nozzle holder 1 can also be snapped into a water pipe to achieve a detachable connection.

[0040] In one embodiment, a second interface 9 is coaxially provided on the first side cavity 5 and the second side cavity 10. The second interface 9 is used for threaded connection with the nozzle 2 and sealed with Teflon tape. It is easy to understand that the nozzle holder 1 can also be snapped with the nozzle 2 to achieve a detachable connection, which facilitates quick disassembly and replacement.

[0041] Working principle:

[0042] The water flow from the water pipe enters the water injection chamber 4 through the first interface 3, and then is split into the first side chamber 5 and the second side chamber 10 on the side. The first side chamber 5 and the second side chamber 10 mainly play the role of guiding and buffering, making the water flow more stable. The outlet of each side chamber is connected to the nozzle 2. The water flow enters the guide chamber 6 of the nozzle 2 through the corresponding side chamber, and then enters the pressurization chamber 7 to increase the water flow pressure. Finally, the water flow is ejected at high speed through the jet chamber 8 to form a high-pressure water jet. The chamfer design at the outlet end of the jet chamber 8 makes the focusing effect better.

[0043] The spray head and its nozzles have a simple structure, are easy to install and disassemble, and are convenient to maintain. The spray head has two rows of nozzles. The nozzles corresponding to the first side chamber have a stronger water jet impact force, which can be used to break up dirt. The nozzles corresponding to the second side chamber have a larger impact area, which can be used to clean, unclog, and polish pipes. This design increases both the impact force and impact area of ​​the water jet, improving cleaning efficiency. The cone angle at one end of the water injection chamber is 1.5 to 2 times the inclination angle of the first side chamber. The inclination angle of each side chamber relative to the water injection chamber is the same as the inclination angle of the nozzle relative to the water injection chamber, which can reduce... Minimal water flow resistance loss between the injection chamber and side chambers maintains water flow stability. The diameter of each side chamber is the same as the diameter of the nozzle's guide chamber, preventing water flow damage to the nozzle connection. The uniform diameter of each side chamber allows for even water flow distribution, improving water flow stability and reducing atomization. The nozzle's internal flow channel profile is a conical-straight-diffusing shape, meaning that high-pressure water flows from the guide chamber into the pressurization chamber and then into the jet chamber. The flow channel is smooth and has a small outlet diameter, improving water jet stability, reducing atomization, and increasing cleaning efficiency.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely specific and detailed examples of the embodiments described in this application, and should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A high-efficiency high-pressure water jet cleaning nozzle, characterized in that: The high-efficiency high-pressure water jet cleaning nozzle includes a nozzle base (1) and several nozzles (2), wherein: The nozzle seat (1) has a water injection chamber (4), several annularly distributed first side chambers (5) and several annularly distributed second side chambers (10). The first side chambers (5) and the second side chambers (10) are arranged sequentially and intersectingly along the axial direction of the water injection chamber (4). The first side chambers (5) and the second side chambers (10) are also connected to the water injection chamber (4) and have different inclination angles relative to the water injection chamber (4). The nozzles (2) are connected one-to-one to the first side cavity (5) or the second side cavity (10) and are used to spray water flow toward the same side.

2. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 1, characterized in that: The second side cavity (10) and the first side cavity (5) are arranged sequentially along the water flow direction in the water injection cavity (4), and the angle between the axis of the first side cavity (5) and the axis of the water injection cavity (4) is greater than the angle between the axis of the second side cavity (10) and the axis of the water injection cavity (4).

3. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 2, characterized in that: The angle between the axis of the first side cavity (5) and the axis of the water injection cavity (4) is 60°, and the angle between the axis of the second side cavity (10) and the axis of the water injection cavity (4) is 45°.

4. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 1, characterized in that: The nozzle (2) is provided with a guide cavity (6), a pressurizing cavity (7) and a jet cavity (8) connected in sequence along the water flow direction. The guide cavity (6) and the jet cavity (8) are both cylindrical holes, and the outlet end of the jet cavity (8) is also provided with a chamfer. The pressurizing cavity (7) is a conical hole.

5. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 4, characterized in that: The diameter of the first side cavity (5) and the diameter of the second side cavity (10) are the same as the diameter of the guide cavity (6) of the nozzle (2).

6. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 4, characterized in that: The diameter of the guide cavity (6) is 5.5 mm to 7 mm, and the diameter of the jet cavity (8) is 0.9 mm to 1.3 mm.

7. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 1, characterized in that: There are four of each of the first side cavity (5) and the second side cavity (10).

8. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 1, characterized in that: The side of the water injection cavity (4) away from the inlet end is conical, and the cone angle is 100° to 120°.

9. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 1, characterized in that: The nozzle holder (1) is also provided with a first interface (3), which is used to connect to the water pipe thread and is sealed with raw rubber tape and gasket.

10. The high-efficiency high-pressure water jet cleaning nozzle as described in claim 1, characterized in that: The first side cavity (5) and the second side cavity (10) are also coaxially provided with a second interface (9), which is used to be threadedly connected to the nozzle (2) and sealed with raw rubber tape.

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