Compact high-pressure nozzle

Abstract

The utility model discloses a compact high-pressure nozzle. A nozzle seat and a central shaft are connected into a whole; a protective cover is fixed at the outer end of the spray head seat and is provided with a flow guide hole corresponding to the spray hole; by arranging the protective cover, one end of the nozzle seat can be counterweighted, and the stability of the nozzle seat is improved during high-speed rotation; the periphery of the central shaft is coated with a shell; a magnetic ring is fixed on the central shaft; a speed reduction copper ring corresponding to the magnetic ring is fixed on the inner wall of the shell, and the speed reduction copper ring wraps the magnetic ring. At least two top bearings are arranged on one side, facing an end cover, of a magnetic ring, and a base bearing is arranged on one side, facing a base, of the magnetic ring; by arranging the bearings on the two sides and arranging a plurality of top bearings on one side with larger centrifugal force, the structure can improve the stability of the nozzle seat during high-speed rotation. A plurality of water sealing pieces are arranged between the axis of the gland and the central shaft to realize internal sealing; and high-speed rotary cleaning is realized on the premise of ensuring stable internal sealing.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure nozzles, and in particular relates to a compact high-pressure nozzle. Background Art

[0002] As we all know, in the field of high-pressure cleaning technology, the more commonly used in the existing technology is the high-pressure cleaning nozzle. This type of high-pressure cleaning nozzle is connected to a high-pressure pipe, and a water outlet is provided at the end. The water outlet is connected to the rotating inner core, and the nozzle is driven by the high-pressure liquid to realize the in-situ rotation, thereby realizing high-pressure flushing of the pipe or chamber.

[0003] The current technical problem is that in order to improve the cleaning efficiency, technical personnel in this field have designed a high-pressure, low-speed cleaning nozzle with magnetic damping. During the production and use stage, in order to increase the length of the nozzle, the nozzle seat is usually extended. This design increases the length of the entire high-pressure nozzle and increases the working stability of the nozzle. However, the disadvantage is that the strength of the nozzle cannot be guaranteed. Under long-term high-pressure impact, it is easy to cause the internal high-pressure nozzle assembly to shake during use, resulting in abnormal noise and damage.

[0004] To sum up, in order to solve the various problems existing in the existing technology, the best way is to improve the internal structure of the high-pressure nozzle so that it has better stability and can effectively prevent its overall shaking, abnormal noise and even damage when subjected to high-pressure impact. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention proposes a compact high-pressure nozzle, which adopts structural improvements, adds a counterweight to the nozzle seat, and reinforces the entire compact high-pressure nozzle during operation through the counterweight and the internal radial stabilization structure.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A compact high-pressure nozzle comprises a nozzle seat, the nozzle seat being provided with a spray hole, a protective cover being fixed to the outer end of the nozzle seat, the protective cover being provided with a guide hole corresponding to the spray hole; the nozzle seat is integrally connected to a central shaft; a shell is provided around the outer periphery of the central shaft; a magnetic ring is fixed to the central shaft inside the shell; a deceleration copper ring is fixed on the inner wall of the shell corresponding to the magnetic ring, the deceleration copper ring covering the magnetic ring; the shell is integrally connected to the base through threads;

[0008] An end cover is provided on the side of the shell facing the nozzle seat, and the nozzle seat passes through the end cover and is connected to the central axis;

[0009] A bearing is provided between the shell and the central axis, at least two top bearings are provided on the side of the magnetic ring facing the end cover, and a base bearing is provided on the side of the magnetic ring facing the base; a single or multiple water seals are provided between the axis of the end cover and the central axis.

[0010] The lower end of the central shaft is provided with a water seal and an ejector nut sleeve. An ejector water seal passes through the ejector sleeve and then passes through the water seal and the ejector nut sleeve. The base squeezes the ejector water seal into position.

[0011] An oil seal assembly I is provided between the upper end of the top bearing and the housing; an oil seal assembly II and a retaining spring are provided between the top end of the base and the base bearing.

[0012] The shell is made of aluminum alloy, which can effectively reduce the outward release of magnetic force.

[0013] A deceleration spring is provided between the top end of the central shaft and the magnetic ring, and a positioning ring is provided between the bottom end of the magnetic ring and the base bearing.

[0014] The utility model has the following beneficial effects: the utility model connects the nozzle seat and the central shaft into one body; a protective cover is fixed on the outer end of the nozzle seat, and a guide hole is provided on the protective cover corresponding to the injection hole; by providing the protective cover, the nozzle seat can be counterweighted at one end, thereby improving the stability of the nozzle seat during high-speed rotation; a shell is provided on the periphery of the central shaft; a magnetic ring is fixed on the central shaft; a deceleration copper ring is fixed on the inner wall of the shell corresponding to the magnetic ring, and the deceleration copper ring covers the magnetic ring. Through the above structural setting, a magnetic resistance structure can be formed by the deceleration copper ring corresponding to the magnetic ring, and the rotation speed can be reduced by the magnetic resistance structure. At least two top bearings are provided on the side of the magnetic ring facing the end cover, and a base bearing is provided on the side of the magnetic ring facing the base; by providing bearings on both sides and providing multiple top bearings on the side with greater centrifugal force, this structure can improve the stability of the nozzle seat during high-speed rotation. Multiple water seals are provided between the axis of the end cover and the central shaft to achieve internal sealing; high-speed rotation cleaning can be achieved while ensuring the stability of the internal seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the assembly cross-sectional structure of the utility model;

[0017] In the figure, 1. protective cover, 2. nozzle seat, 3. threaded countersunk hole, 4. end cover, 41. lubrication hole, 5. deceleration copper ring, 6. housing, 7. positioning ring, 8. base bearing, 9. base, 10. ejector water seal, 11. ejector water seal, 12. ejector sleeve, 13. ejector nut sleeve, 14. water seal, 15. retaining spring, 16. oil seal assembly II, 17. center shaft, 18. magnetic ring, 19. deceleration spring, 20. top bearing, 21. oil seal assembly I, 22. injection hole, 23. guide hole, 24. spring pressure plate, 25. ejector. DETAILED DESCRIPTION

[0018] The present invention is further described below through specific implementation methods. The following description is only for illustrative purposes. Those skilled in the art can make further structural improvements based on the following description. The scope of protection of this patent shall be based on the scope recorded in the claims.

[0019] Example 1:

[0020] A compact high-pressure sprinkler, having the same structure as the prior art, includes a sprinkler base 2, which is provided with a spray hole 22. One of the features of this utility model is that a protective cover 1 is fixed to the outer end of the sprinkler base 2, the protective cover 1 being provided with a guide hole 23 corresponding to the spray hole 22, and a threaded countersunk hole 3 being provided on the protective cover 1. The protective cover 1 and the sprinkler base 2 are fastened together by bolts in the threaded countersunk hole 3. With the above structural arrangement, the protective cover 1 can be provided to achieve a counterweight at one end of the sprinkler base 2 without affecting the passage of high-pressure water flow, thereby improving the stability of the distal end of the sprinkler base 1 during high-speed rotation.

[0021] The nozzle base 2 is integrally connected to a central shaft 17. The central shaft is the same as in the prior art, being an axially penetrating structure. The central shaft 17 is surrounded by a housing 6, the top of which is threadedly connected to the end cap 4, and the bottom of which is threadedly connected to the base 9. The base 9 is used to connect to an external high-pressure water source.

[0022] Inside the shell 6 , a magnetic ring 18 is fixed on the central axis 17 ; on the inner wall of the shell 6 , a deceleration copper ring 5 is fixed corresponding to the magnetic ring 18 , and the deceleration copper ring 5 is arranged to cover the magnetic ring 18 .

[0023] When the magnetic ring 18 and the deceleration copper ring 5 are fixed, as shown in the figure, a base bearing 8 is provided on the side of the magnetic ring 18 facing the base 9, and the bottom surface of the base bearing is supported on the boss of the inner diameter of the shell 6. A positioning ring 7 is provided above the base bearing 8, and the upper part of the positioning ring 7 is the magnetic ring 18. Above the magnetic ring 18 are two spring pressure plates 24, and a deceleration spring 19 is provided between the spring pressure plates 24. Above the deceleration spring 19 is the outward expansion surface of the upper end of the central shaft 17; the threaded hole at the axis center of the upper end of the central shaft 17 is threadedly connected to the nozzle seat 2. Since the shell 6 is provided with an end cover 4 on the side facing the nozzle seat 2, the nozzle seat 2 passes through the end cover 4 and is connected to the central shaft 17; two top bearings 20 are also provided on the upper part of the deceleration spring 19 on the inner diameter of the shell 6, and these two top bearings 20 are provided corresponding to the magnetic ring 18. The above structure can achieve stable fixation of the magnetic ring 18.

[0024] Furthermore, the housing 6 is made of aluminum alloy, which can effectively reduce the outward release of magnetic force and avoid affecting the entire magnetic resistance structure.

[0025] After the above structure is set, the utility model can form a magnetic resistance structure by the deceleration copper ring 5 corresponding to the magnetic ring, and reduce the rotation speed of the nozzle holder 2 under high pressure by the magnetic resistance structure. The magnetic ring 18 is flexibly squeezed into the interior of the deceleration copper ring 5 by the deceleration spring 19 to ensure the fixed stability of the magnetic ring 18.

[0026] Furthermore, the present invention provides a single or multiple water seals between the axis of the end cover 4 and the central axis 17. The specific sealing structure is:

[0027] On the basis of the above structure, the present invention further improves the waterproofing of the axis. The top end of the central shaft 17 is provided with a stepped countersunk hole, and the nozzle seat 2 is fixed to the inner thread of the stepped countersunk hole. The bottom end of the central shaft 17 is provided with a countersunk hole, and the water seal 14 and the thimble nut sleeve 13 are fixed in the countersunk hole. The thimble nut sleeve 13 is connected to the inner thread of the central shaft 17 to achieve the sealing of the water seal 14.

[0028] The base 9 is arranged on the lower side of the ejector nut sleeve 13. A countersunk hole is provided at the axis of the base 9 toward the ejector nut sleeve 13. An ejector water seal 10 is fixed through the countersunk hole. The ejector water seal 10 includes an ejector water seal 11 on the outer diameter and an ejector pin 25. The ejector pin 25 on the ejector water seal 10 passes through the ejector sleeve 12 and then through the water seal 14 and the ejector nut sleeve 13. The base squeezes the ejector water seal 10 into position.

[0029] Furthermore, an oil seal assembly I 21 is disposed between the upper end of the top bearing 20 and the housing 6. An oil seal assembly II 16 and a retaining spring 15 are disposed between the top end of the base 9 and the base bearing 8. The retaining spring 15 seals and secures the oil seal assembly II 16. The oil seal assembly I 21 and the oil seal assembly II 16 cooperate to seal both ends of the entire rotating area.

[0030] The utility model adopts a self-sealing sealing structure, and the water seal member 14, the thimble nut sleeve 13, and the thimble water seal member 10 mentioned above work together to achieve sealing at the axis of the central shaft 17, thereby achieving high-speed rotation cleaning while ensuring stable internal sealing.

[0031] The utility model has a compact structure design. On the premise of increasing the overall length of the high-pressure nozzle, multiple bearings cooperate to realize the support and installation of the rotating area. Under long-term high-pressure impact, it can effectively prevent the internal high-pressure nozzle assembly from shaking during use, thereby causing abnormal noise and damage.

Claims

1. A compact high-pressure nozzle, comprising a nozzle holder, wherein the nozzle holder is provided with a spray hole; characterized in that: A protective cover is fixed to the outer end of the nozzle seat, and the protective cover is provided with a guide hole corresponding to the injection hole; the nozzle seat is connected to the central shaft as a whole; the outer periphery of the central shaft is covered with a shell; inside the shell, a magnetic ring is fixed to the central shaft; on the inner wall of the shell, a deceleration copper ring is fixed corresponding to the magnetic ring, and the deceleration copper ring covers the magnetic ring; the shell and the base are threadedly connected as a whole; An end cover is provided on the side of the shell facing the nozzle seat, and the nozzle seat passes through the end cover and is connected to the central axis; A bearing is provided between the shell and the central axis, at least two top bearings are provided on the side of the magnetic ring facing the end cover, and a base bearing is provided on the side of the magnetic ring facing the base; a single or multiple water seals are provided between the axis of the end cover and the central axis.

2. A compact high-pressure nozzle according to claim 1, characterized in that: The lower end of the central shaft is provided with a water seal and an ejector nut sleeve. An ejector water seal passes through the ejector sleeve and then passes through the water seal and the ejector nut sleeve. The base squeezes the ejector water seal into position.

3. A compact high-pressure nozzle according to claim 1, characterized in that: An oil seal assembly I is provided between the upper end of the top bearing and the housing; an oil seal assembly II and a retaining spring are provided between the top end of the base and the base bearing.

4. A compact high-pressure nozzle according to claim 1, characterized in that: The shell is made of aluminum alloy.

5. The compact high-pressure nozzle according to claim 1, characterized in that: A deceleration spring is provided between the top end of the central shaft and the magnetic ring, and a positioning ring is provided between the bottom end of the magnetic ring and the base bearing.

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