Constant-speed high-pressure spray head

Abstract

The utility model discloses a constant-speed high-pressure spray head. A spray head seat and a central shaft are connected into a whole; the periphery of the central shaft is coated with a shell; a magnetic circular ring seat is fixed on the central shaft in the shell, and a plurality of magnetic blocks are fixed on the magnetic circular ring seat; a speed reduction copper ring is arranged on the inner wall of the shell and corresponds to the magnetic circular ring base, and the speed reduction copper ring wraps the magnetic circular ring base. A bearing is arranged between the shell and the central shaft; a gland is arranged at the right end of the central shaft; a lock nut is in threaded connection with the periphery of the gland; one or more water sealing pieces are arranged between the axis of the gland and the central shaft; a reducing connector is fixed to the end of the gland through threads. The rotating speed of the center shaft can be controlled by changing the magnetic force of the magnetic blocks and controlling the rotating speed of the center shaft through the speed reduction copper ring, the nozzle seat can be controlled within a certain range, and control over different rotating speeds can be achieved only by changing the different magnetic blocks on the magnetic ring seat during batch manufacturing. And internal sealing is realized through multiple water seal structures.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure nozzles, and particularly relates to a high-pressure nozzle with a constant speed. Background Art

[0002] As is well known, in the field of high-pressure cleaning technology, high-pressure cleaning nozzles are commonly used in the prior art. Such cleaning nozzles are connected to a high-pressure pipeline, and a water outlet end is arranged at the end. The water outlet end is connected to a rotating inner core, and the nozzle rotates in place under the drive of high-pressure liquid, thereby realizing high-pressure flushing of the pipeline or chamber.

[0003] The current technical problem is that in order to improve the cleaning efficiency, those skilled in the art usually increase the water pressure, and obtain a water column with a higher speed to spray the part to be cleaned through high pressure. However, in actual operation, simply increasing the water pressure will cause the rotation speed of the water outlet end to increase at the same time. The increase in the rotation speed will cause the water column to be scattered. When the rotation speed reaches a certain level, such high-speed rotation will directly gather the high-pressure water column into a "spray line", and this "spray line" will instead reduce the cleaning effect.

[0004] After actual high-pressure flushing verification, it is concluded that during high-pressure flushing, for different water pressures, the rotation speed must be controlled within a certain range. Therefore, when flushing with different high-pressure water sources, a deceleration structure must be designed. This deceleration structure can be designed for stage deceleration, that is, for different high-pressure sources, different high-pressure cleaning nozzles are used for adaptation.

[0005] To sum up, in the prior art, in order to achieve high-pressure cleaning, the best way is to design the deceleration device of the high-pressure cleaning nozzle into multiple models or adjustable models. However, such multiple models or adjustable structures are convenient for production and assembly and will not cause major changes to the existing production methods. Content of the Utility Model

[0006] In view of the above-mentioned disadvantages of the prior art, the utility model provides a high-pressure nozzle with a constant speed. By adopting a magnetic damping structure, the rotation speed of the water outlet end can be restricted to the highest speed when the water outlet end rotates driven by high-pressure liquid, preventing a high rotation speed from being generated under high-pressure supply.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A high-pressure nozzle with a constant speed, comprising a nozzle seat, the nozzle seat is provided with a spray hole; the nozzle seat is connected to a central axis; the central axis is covered with a shell; inside the shell, a magnetic ring seat is fixed on the central axis, and a plurality of magnetic blocks are fixed on the magnetic ring seat; on the inner wall of the shell, a deceleration copper ring is provided corresponding to the magnetic ring seat, the deceleration copper ring covers the magnetic ring seat, and the end of the deceleration copper ring is provided with a plurality of hollow grooves or winding coils, and the plurality of hollow grooves or winding coils are provided corresponding to the magnetic blocks;

[0009] A bearing is arranged between the shell and the central shaft; a gland is arranged at the right end of the central shaft, a nut is arranged on the periphery of the gland and is threadedly connected to the shell, a lock nut is threadedly connected to the periphery of the gland, and the lock nut is squeezed on the side of the nut;

[0010] A single or multiple water seals are arranged between the gland axis and the central axis; a reducer connector is threadedly fixed on the gland end.

[0011] The magnetic annular seat is an annular piece, one end of which is provided with a positioning groove, and a positioning retaining ring is arranged in the positioning groove; a plurality of fixing grooves are evenly arranged on the outer diameter of the magnetic annular seat, and a magnetic block is arranged in the fixing groove.

[0012] The left side of the magnetic ring seat is provided with a bearing I, and the right side of the reduction copper ring is provided with a bearing II. The two bearings realize the bearing rotation connection between the central shaft and the housing, ensuring that the reduction copper ring and the magnetic ring seat form a stable relative rotation structure.

[0013] The right end of the central shaft is provided with a water seal and an ejector nut sleeve. An ejector water seal penetrates the gland and then penetrates the water seal and the ejector nut sleeve. The reducer connector squeezes the ejector water seal into position.

[0014] An oil seal component I is arranged between the left end of the central shaft and the outer shell; an oil seal component II is arranged between the right end of the central shaft and the gland.

[0015] The shell is made of aluminum alloy, which can effectively reduce the outward release of magnetic force.

[0016] The deceleration copper ring is made of copper.

[0017] The utility model has the following beneficial effects: the nozzle seat and the central shaft of the utility model are connected into one body; the outer periphery of the central shaft is coated with a housing; inside the housing, a magnetic ring seat is fixed on the central shaft, and a plurality of magnetic blocks are fixed on the magnetic ring seat; on the inner wall of the housing, a deceleration copper ring is arranged corresponding to the magnetic ring seat, and the deceleration copper ring is arranged to cover the magnetic ring seat; a bearing is arranged between the housing and the central shaft; a gland is arranged at the right end of the central shaft, and a lock nut is threadedly connected to the outer periphery of the gland; one or more water seals are arranged between the axis of the gland and the central shaft; a reducing connector is threadedly fixed to the end of the gland. Through the above structural arrangement, the rotation speed of the central shaft can be controlled by changing the magnetic force of the magnetic blocks and passing through the deceleration copper ring, and the nozzle seat can be controlled within a certain range. During mass production, different rotation speeds can be controlled only by changing different magnetic blocks on the magnetic ring seat; internal sealing is realized through a multiple water seal structure; high-speed rotary cleaning is realized on the premise of ensuring stable internal sealing. Brief Description of the Drawings

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 It is a schematic sectional structure diagram of the assembly of the present utility model;

[0020] Figure 2 It is a schematic three-dimensional structure diagram of the deceleration copper ring Figure Ⅰ ;

[0021] Figure 3 It is a schematic three-dimensional structure diagram of the deceleration copper ring Figure Ⅱ ;

[0022] Figure 4 It is a schematic sectional structure diagram of the magnetic ring seat;

[0023] Figure 5 It is a schematic top view structure diagram of the magnetic ring seat;

[0024] In the figure, 1, nozzle seat, 10, injection hole, 11, bearing II, 12, positioning retaining ring, 13, thimble nut sleeve, 14, water seal, 15, positioning groove, 16, magnetic ring seat, 17, magnetic block, 18, oil seal assembly I, 19, oil seal assembly II, 20, housing, 2, central shaft, 21, central shaft force application surface, 22, central shaft thread head, 3, bearing I, 4, deceleration copper ring, 40, hollow end face, 41, covering hole, 42, through hole, 43, hollow groove, 5, backup nut, 6, lock nut, 7, gland, 8, reducing connector, 81, reducing thread end, 82, threaded connection hole, 9, thimble water seal, 91, thimble water seal, 92, thimble. Detailed Embodiment

[0025] The present utility model will be further described through specific embodiments below. The following description is only for exemplary explanation, and those skilled in the art can make further structural improvements based on the following explanation. The protection scope of this patent shall be subject to the scope recorded in the claims.

[0026] Embodiment 1:

[0027] A speed - adjustable high - pressure nozzle, as Figure 1 shown, the structure identical to the prior art is: it includes a nozzle base 1, and irregular spray holes 10 are arranged on the nozzle base 1. The nozzle base 1 is integrally connected to the central shaft 2. A central - shaft force - applying surface 21 for screwing and applying force is arranged on the central shaft 2, and the central shaft 2 is axially penetrated; an outer shell 20 is wrapped around the periphery of the central shaft 2. Inside the outer shell 20, a magnetic - force ring seat 16 is fixed on the central shaft 2. A bearing I 3 is arranged on the left side of the magnetic - force ring seat 16, and the end face of the bearing I 3 is attached to the inner right - end face of the outer shell 20. The structure of the magnetic - force ring seat 16 is as Figure 4 、 5 shown. The magnetic - force ring seat 16 is an annular part. A positioning groove 15 is arranged in the inner diameter of one end of it, and a positioning retaining ring 12 is arranged in the positioning groove 15; a plurality of fixing grooves are evenly distributed on the outer diameter of the magnetic - force ring seat 16, and a magnetic block 17 is arranged in each fixing groove.

[0028] On the inner wall of the outer shell 20, a deceleration copper ring 4 is arranged corresponding to the magnetic - force ring seat 16. The deceleration copper ring 4 is arranged to wrap the magnetic - force ring seat 16, as Figure 2 、 3 shown. The deceleration copper ring 4 is a copper - material circular - tube part, which includes a wrapping hole 41 and a through - hole 42 at the center. The end of the deceleration copper ring 4 is provided with a hollow end face 40, and a plurality of hollow grooves 43 are evenly and penetratingly arranged on the hollow end face 40. The hollow grooves 43 can form a plurality of cutting protrusions, and such cutting protrusions can cut the magnetic - force lines of the magnetic field formed by the magnetic blocks 17. Here, the hollow grooves 43 can be replaced by winding coils, and the two have the same function. In the present utility model, a plurality of hollow grooves 43 are arranged corresponding to the magnetic blocks 17.

[0029] The present utility model also has a bearing II 11 arranged on the right side of the deceleration copper ring 4. The bearing II 11 is used in cooperation with the bearing I 3 on the left side of the magnetic - force ring seat 16; the present utility model realizes the bearing sliding connection between the central shaft 2 and the outer shell 20 through two bearings, ensuring a stable relative rotation between the deceleration copper ring 4 and the magnetic - force ring seat 16. In the present utility model, the outer shell 20 is made of aluminum - alloy material, which can effectively reduce the external release of magnetic force.

[0030] A gland 7 is arranged at the right end of the central shaft 2, as Figure 1As shown in the figure, a backup nut 5 is arranged around the gland 7 and is threadedly connected to the periphery of the housing 20 as a whole. A lock nut 6 is threadedly connected to the periphery of the gland 7, and the lock nut 6 is pressed against the side of the backup nut 5; between the axis of the gland 7 and the central shaft 2, one or more water seals are provided; a reducing connector 8 is fixedly connected to the end of the gland 7 by threads. One end of the reducing connector 8 is a reducing threaded end 81, and the reducing threaded end 81 is threadedly connected to the end of the right end of the gland 7; the other end of the reducing connector 8 is a threaded connection hole 82, and connection to an external high-pressure water supply end can be achieved through the threaded connection hole 82.

[0031] With the above structural arrangement, when assembling the present utility model, magnetic blocks 17 of different sizes can be replaced according to the actual needs of customers to adjust different magnetic field intensities; when performing high-pressure flushing, after the reducing connector 8 is connected to an external high-pressure water source, high-pressure water enters the nozzle seat 1 through the shaft hole of the central shaft 2. Irregular ejection holes 10 are provided on the nozzle seat 1. Under the release of irregular pressure, the nozzle seat 1 can be prompted to rotate at high speed in place. The nozzle seat 1 drives the central shaft 2 to rotate in place. When the central shaft 2 rotates, it drives the positioning retaining ring 12, the magnetic force ring seat 16, and the magnetic blocks 17 to rotate. Under the cooperative action of bearing II 11 and bearing I 3, the housing 20, the lock nut 6, and the backup nut 5 remain stationary in place. During the rotation of the central shaft 2, the magnetic blocks 17 rotate synchronously at high speed. At this time, the deceleration copper ring 4 remains stationary in place to form a cutting structure for magnetic force lines. This kind of magnetic field cutting effect serves as a damping force, which can stably constrain the central shaft 2 within a certain rotational speed and avoid disorderly high-speed rotation under high-pressure supply.

[0032] Embodiment 2:

[0033] On the basis of the structure of Embodiment 1 of the present utility model, further treatment is also carried out on the waterproofing at the axis, as shown in the appended Figure 1 figure. A stepped counterbore is provided at the right end of the central shaft 2. A water seal 14 and a thimble nut sleeve 13 are arranged in the stepped counterbore. The thimble nut sleeve 13 is threadedly connected to the stepped counterbore to seal the water seal 14; the gland 7 is arranged on the right side of the thimble nut sleeve 13. A counterbore is provided at the axis of the gland 7 facing the thimble nut sleeve 13. A thimble water seal 9 is fixedly penetrated in the counterbore at this place. The thimble water seal 9 includes a thimble water seal 91 on the outer diameter and a thimble 92. The thimble 92 on the thimble water seal 9 penetrates through the gland 7 and then through the water seal 14 and the thimble nut sleeve 13. After the reducing connector 8 is threadedly connected to the gland 7, the thimble water seal 9 is squeezed and positioned.

[0034] Furthermore, a grease seal assembly I 18 is provided between the left end of the central shaft 2 and the housing 20; a grease seal assembly II 19 is provided between the right end of the central shaft 2 and the gland 7.

[0035] The utility model adopts a self-sealing structure, and realizes the sealing of high-pressure water supply at the axis of the central shaft 2 through the combined action of the water seal member 14, the thimble nut sleeve 13 and the thimble water seal member 9 described above.

[0036] Further, when the bearing II 11 and the bearing I 3 are assembled, all the bearing II 11 and the bearing I 3 adopt angular contact bearings. This structure can enhance the end face stress-bearing capacity and improve the stability of the constant-speed high-pressure nozzle during rotation.

[0037] To sum up, through the above structural settings, the utility model adjusts the magnetic force by changing the size of the magnetic block 17, and controls the rotation speed of the central shaft through the deceleration copper ring, and can control the nozzle seat 1 within a certain rotation speed range. During mass production, different rotation speed controls can be achieved only by changing the different magnetic blocks 17 on the magnetic force ring seat 16; the internal seal is realized through the design of a multiple water seal structure; high-speed rotary cleaning is realized on the premise of ensuring the stability of the internal seal.

Claims

1. A constant-speed high-pressure nozzle, which comprises a nozzle base, wherein injection holes are arranged on the nozzle base; the nozzle base is integrally connected to a central shaft; an outer shell is covered and arranged around the central shaft; and it is characterized in that: Inside the housing, a magnetic ring seat is fixed on the central axis, and a number of magnetic blocks are fixed on the magnetic ring seat; on the inner wall of the housing, a deceleration copper ring is arranged corresponding to the magnetic ring seat. The deceleration copper ring is arranged to wrap the magnetic ring seat, and a number of hollow slots or winding coils are arranged at the end of the deceleration copper ring. The number of hollow slots or winding coils are arranged corresponding to the magnetic blocks. A bearing is arranged between the housing and the central axis; a gland is arranged at the right end of the central axis. A backup nut is arranged on the periphery of the gland and is threadedly connected to the housing as a whole. A lock nut is threadedly connected to the periphery of the gland, and the lock nut is pressed against the side of the backup nut. One or more water seal components are arranged between the axis of the gland and the central axis; a reduced-diameter connector is fixedly connected to the end of the gland by threads.

2. The variable-speed high-pressure nozzle according to claim 1, wherein: The magnetic ring seat is a ring-shaped part, and a positioning groove is arranged at one end of it. A positioning retaining ring is arranged in the positioning groove; a number of fixing grooves are evenly arranged on the outer diameter of the magnetic ring seat, and magnetic blocks are arranged in the fixing grooves.

3. The variable-speed high-pressure nozzle according to claim 1, characterized in that: Bearing I is arranged on the left side of the magnetic ring seat; Bearing II is arranged on the right side of the deceleration copper ring.

4. A speed-controllable high-pressure nozzle according to claim 1, characterized in that: A water seal component and a thimble nut sleeve are arranged at the right end of the central axis. A thimble water seal component passes through the gland and then passes through the water seal component and the thimble nut sleeve; the reduced-diameter connector presses and positions the thimble water seal component.

5. The variable-speed high-pressure nozzle according to claim 1, characterized in that: Oil seal assembly I is arranged between the left end of the central axis and the housing; Oil seal assembly II is arranged between the right end of the central axis and the gland.

6. The variable-speed high-pressure nozzle according to claim 1, wherein: The housing is made of aluminum alloy material.

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