CN210474358U

CN210474358U - High-speed jet rotatable nozzle

Info

Publication number: CN210474358U
Application number: CN201921301529.1U
Authority: CN
Inventors: 朱天骄
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-05-08
Anticipated expiration: 2029-08-12

Abstract

A high-speed jet rotatable spray head is characterized in that: the method comprises the following steps: the spray head shell (1) is internally provided with a spray head inner cavity (11), and when the spray head shell works, pressure liquid is introduced to form rotating fluid in the spray head inner cavity (11); the nozzle seat (2) is fixedly arranged at the jet orifice (12); a nozzle rod (3) which is arranged in the spray head inner cavity (11), and a nozzle (31) is fixed on the front end part of the nozzle rod; when the sprayer works, the nozzle rod (3) revolves around the inner wall of the inner cavity (11) of the sprayer under the action of rotating fluid and rotates automatically; the periphery of the nozzle rod (3) is also provided with spiral teeth (33), and when the nozzle rod works, the rotating fluid moves in the spiral teeth (33) to generate thrust opposite to the direction of the rotating fluid for the nozzle rod (3).

Description

High-speed jet rotatable nozzle

Technical Field

The utility model relates to a pressure liquid fluidic injection system, concretely relates to high-speed efflux rotatable shower nozzle.

Background

The spray system (or head) is one of the key components for generating a jet of pressurized liquid. On the premise of the performance permission of the liquid pressure source, the jet direction is continuously changed, so that the jet area is greatly increased, and the working efficiency is improved.

The jet stream of the early injection system is generally formed in two ways as shown in fig. 1 and 2. Fig. 1 shows the jet from a cylindrical jet system. Fig. 2 shows the jet from a fan jet system. The two injection systems have the following advantages and disadvantages:

the jet fluid generated in fig. 1 is relatively concentrated and is a point, the impact force is large, but the impact efficiency is relatively low due to the small impact area;

the impact area generated by the figure 2 is larger and is a line, but the jet flow is dispersed, so that the impact force is smaller, and the impact effect is poorer.

Disclosure of Invention

The utility model aims at providing a shower nozzle that the impact force is big and the impact area is also great.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a high-velocity jet rotatable spray head comprising:

the nozzle shell is internally provided with a nozzle inner cavity, the nozzle inner cavity comprises a conical cavity section positioned at the front part, and the small end of the conical cavity section faces forwards; a through hole is arranged at the front end of the spray head shell corresponding to the small end of the conical cavity section along the axial lead of the spray head shell to be used as a spray opening; the rear end of the inner cavity of the spray head is provided with a plurality of small holes for introducing pressure liquid, and the small holes are uniformly distributed around the axial lead of the inner cavity of the spray head so that the small holes form rotating fluid in the inner cavity of the spray head after the pressure liquid is introduced into the small holes during working;

the nozzle seat is fixedly arranged at the injection port;

the nozzle rod is arranged in the spray head inner cavity, a nozzle is fixed on the front end part of the nozzle rod, and the nozzle is abutted and matched with the nozzle seat; the nozzle rod is provided with a fluid channel along the axial direction, the front end of the fluid channel is communicated with the nozzle and is communicated with the jet orifice through the nozzle, and the rear end of the fluid channel is opened and is communicated with the inner cavity of the spray head to be used as a fluid inlet; the periphery of the rear part of the nozzle rod is in contact fit with the inner wall of the inner cavity of the spray head, so that the nozzle rod revolves around the inner wall of the inner cavity of the spray head under the action of rotating fluid and rotates automatically during working;

wherein, the periphery of the nozzle rod is also provided with spiral teeth; when the flow direction of the rotating fluid is anticlockwise rotation on a cross-sectional view of the spray head projected from back to front, the spiral tooth is required to be left-handed; when the flow direction of the rotating fluid is clockwise rotation on a cross-sectional view projected from the back to the front of the spray head, the spiral tooth is required to be right-handed; thus, when the nozzle is operated, the rotating fluid moves in the spiral teeth, and thrust opposite to the direction of the rotating fluid is generated on the nozzle rod.

The following further technical solutions are explained and explained:

in the above scheme, the cross section of the spiral teeth is trapezoidal, rectangular or triangular.

In the above scheme, the nozzle rod is provided with a central hole along the axis thereof as the fluid channel, and the orifice of the central hole at the front end of the nozzle rod is provided with a step hole section which is smaller than the central hole, so as to form a blocking step surface facing the rear end of the nozzle rod; the nozzle comprises the minor diameter section of front portion and the major diameter section at rear portion, and the diameter of minor diameter section is less than the diameter of major diameter section, the minor diameter section of nozzle and the step hole section embedding interference fit of nozzle pole, the nozzle pole block the step face and block the major diameter section of nozzle.

In the above scheme, the nozzle rod comprises a rod main body and a friction sleeve, the friction sleeve is arranged on the excircle of the rear part of the rod main body in an interference fit manner, and the friction sleeve is in contact fit with the inner wall of the inner cavity of the spray head.

Compared with the prior art, the utility model, have following advantage:

1. the utility model has the advantages of large impact force, high impact efficiency and long service life; integrates a plurality of advantages, and has very high cost performance.

2. Due to the spiral teeth arranged on the periphery of the nozzle rod, when the nozzle rod rotates in operation, the rotating fluid moves in the spiral teeth, a thrust opposite to the direction of the rotating fluid is generated on the nozzle rod, the friction between the nozzle and the nozzle seat is reduced by the thrust, the service life is prolonged, and different service lives can be realized by changing the parameters a, b, L and D (shown in figure 3) of the spiral teeth on the nozzle rod, and different pressures and flow rates can be adapted.

Drawings

FIG. 1 is a schematic diagram of a prior art;

FIG. 2 is a schematic diagram of another prior art;

fig. 3 is a schematic front view of an embodiment of the present invention;

fig. 4 is a schematic view a-a of fig. 3.

In the above drawings: 1. a nozzle housing; 11. an inner cavity of the spray head; 111. a conical cavity section; 112. a cylindrical cavity section; 12. an ejection port; 13. a small hole; 2. a nozzle holder; 3. a nozzle bar; 31. a nozzle; 311. a small diameter section; 312. a large diameter section; 32. a fluid channel; 321. a stepped bore section; 322. blocking the step surface; 33. helical teeth; 34. a lever body; 35. and (4) a friction sleeve.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): referring to fig. 3 and 4:

a high-speed jet rotatable spray head comprises a spray head shell 1, a nozzle seat 2 and a nozzle rod 3.

Referring to fig. 3 and 4, a nozzle inner cavity 11 is formed in the nozzle housing, the nozzle inner cavity 11 includes a front conical cavity section 111, and the small end of the conical cavity section 111 faces forward; the front end of the nozzle shell 1 corresponding to the small end of the conical cavity section 111 is provided with a through hole along the axial line thereof as a nozzle 12. The rear end of the spray head inner cavity 11 is provided with a plurality of small holes 13 for introducing pressure liquid, and the small holes 13 are uniformly distributed around the axial lead of the spray head inner cavity 11, so that the small holes 13 form rotating fluid in the spray head inner cavity 11 after introducing the pressure liquid during working.

As shown in fig. 3, the nozzle cavity 11 is formed by connecting a conical cavity section 111 and a cylindrical cavity section 112.

As shown in fig. 4, a through hole for introducing pressure liquid is formed in the center of one end of the nozzle housing 1 opposite to the nozzle 12, and the number of the small holes 13 is two, for example, one end of each of the two small holes 13 is communicated with the through hole for introducing pressure liquid, and the other end of each of the two small holes 13 transversely points to the peripheral wall of the nozzle inner cavity 11, so that after the pressure liquid is ejected from the small holes, two forces in the circumferential direction and the circumferential normal direction are generated, and the water flow is caused to rotate in the circumferential direction to form a rotating fluid. The number of the small holes 13 is at least two, but may be more than two in practice.

Referring to fig. 3 and 4, the nozzle holder 2 is fixedly disposed at the injection port 12, and the injection port 12 is a tapered through hole.

Referring to fig. 3 and 4, the nozzle rod 3 is a round rod, the nozzle rod 3 is disposed in the spray head inner cavity 11, a nozzle 31 is fixed on the front end of the nozzle rod, and the nozzle 31 is abutted and matched with the nozzle holder. The nozzle rod 3 is provided with a fluid channel 32 along the axial direction, the front end of the fluid channel 32 is communicated with the nozzle 31 and communicated with the jet orifice 12 through the nozzle 31, and the rear end of the fluid channel 32 is opened and communicated with the spray head inner cavity 11 to be used as a fluid inlet; the periphery of the rear part of the nozzle rod 3 is in contact fit with the inner wall of the spray head inner cavity 11, so that the nozzle rod 3 revolves around the inner wall of the spray head inner cavity 11 under the action of rotating fluid and rotates automatically during working.

Most central is that: the nozzle bar 3 is also provided with helical teeth 33 on its outer circumference. When the flow direction of the rotating fluid is counterclockwise rotation in the sectional view of the head projected from the rear to the front (i.e., fig. 4), the helical teeth 33 are required to be left-handed (i.e., in accordance with the left-hand law). When the flow direction of the rotating fluid is clockwise rotation on the sectional view of the head projected from the rear to the front (i.e., fig. 4), the helical teeth 33 are required to be right-handed (i.e., to comply with the right-hand law); in this way, in operation, the rotating fluid moves within the helical teeth 33, generating a thrust on the nozzle rod 3 in the opposite direction to that of the rotating fluid.

The working principle is as follows: when the pressure liquid enters the inner cavity 11 of the nozzle through the small hole 13, a high-speed rotating water flow is generated, the water flow pushes the rotating nozzle rod 3 to rotate (revolve) along the water flow direction, and at the moment, the high-speed jet flow sprayed from the nozzle 31 also rotates, so that a rotating water flow is generated. Although the water flow area ejected from the nozzle 31 is relatively small, such water flow is rotated at a high speed, and the area of impact is greatly increased, which has advantages of large impact force and large impact area.

The nozzle cavity 11 forms high-pressure high-speed rotating fluid with pressure P, the high-pressure high-speed rotating fluid drives the nozzle rod 3 to rotate at high speed, the nozzle 31 and the nozzle rod 3 are fixedly connected into a whole, the nozzle 31 rotates together, the rotating nozzle 31 and the stationary nozzle holder 2 form a circular sealing line, the diameter of the sealing line is d, the outside of the sealing line is atmosphere, the pressure P relative to the internal pressure liquid can be ignored, the pressure P applied to the nozzle holder 2 by the nozzle 31 is pi (d/2) P, the pressure is large, which normally has hundreds of newtons and can sometimes reach thousands of newtons, under such large pressure, the nozzle 31 and the nozzle holder 2 slide and rub at high speed, so that the nozzle 31 and the nozzle holder 2 are easily worn and fail, and in order to solve the problem, the embodiment further provides spiral teeth 33 on the outer periphery of the nozzle rod 3, generating a thrust opposite to the direction of the rotating fluid, from the indication of fig. 4, it can be calculated that the thrust received by the nozzle rod 3 is f (b, n, ρ, L, D) in the direction opposite to the direction of the high-speed jet, where n is the rotation speed of the nozzle rod 3 and ρ is the density of the pressure liquid.

Because the nozzle 31 is fixed at the front end of the nozzle rod 3, the reverse thrust applied to the nozzle rod 3 can offset part of the pressure of the nozzle 31 on the nozzle seat 2, thereby solving the problems of serious abrasion and short service life of the nozzle 31 on the nozzle seat 2 in a breakthrough manner. And by adjusting any one or more of the parameters b, L and D, different service lives can be realized, and different pressures and flow rates can be adapted.

Specifically, as shown in fig. 3, the cross-sectional shape of the helical teeth 33 is preferably a trapezoid. In practice, the helical teeth 33 may also be rectangular or triangular.

Specifically, as shown in fig. 3, a central hole is opened on the nozzle rod 3 along the axis thereof as the fluid channel 32, a stepped hole section 321 is provided at the orifice of the central hole at the front end of the nozzle rod 3, and the stepped hole section 321 is smaller than the central hole, so as to form a blocking stepped surface 322 facing the rear end of the nozzle rod; the nozzle 31 is composed of a front small diameter section 311 and a rear large diameter section 312, the diameter of the small diameter section 311 is smaller than that of the large diameter section 312, the small diameter section 311 of the nozzle 31 is in interference fit with the step hole section 321 of the nozzle rod 3, and the blocking step surface 322 of the nozzle rod 3 blocks the large diameter section 312 of the nozzle 31. By the design, the nozzle rod 3 and the nozzle 31 are firmly combined together, and the connection is reliable and high in strength. The nozzle 31 is made of ceramic material and has high hardness and wear resistance.

As shown in fig. 3, the nozzle rod 3 specifically includes a rod main body 34 and a friction sleeve 35, the friction sleeve 35 is disposed on the rear excircle of the rod main body 34 in an interference fit manner, and the friction sleeve 35 is in contact fit with the inner wall of the nozzle inner cavity 11, so as to be more wear-resistant and prolong the service life.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A high-speed jet rotatable spray head is characterized in that: the method comprises the following steps:

the nozzle comprises a nozzle shell (1), a nozzle inner cavity (11) is arranged in the nozzle shell, the nozzle inner cavity (11) comprises a conical cavity section (111) positioned at the front part, and the small end of the conical cavity section (111) faces forwards; a through hole is arranged at the front end of the spray head shell (1) corresponding to the small end of the conical cavity section (111) along the axial lead thereof to be used as a spray opening (12); the rear end of the spray head inner cavity (11) is provided with a plurality of small holes (13) for introducing pressure liquid, and the small holes (13) are uniformly distributed around the axial lead of the spray head inner cavity (11) so that the small holes (13) form rotating fluid in the spray head inner cavity (11) after introducing the pressure liquid during working;

the nozzle seat (2) is fixedly arranged at the jet orifice (12);

the nozzle rod (3) is arranged in the spray head inner cavity (11), a nozzle (31) is fixed on the front end part of the nozzle rod (3), and the nozzle (31) is abutted and matched with the nozzle seat; the nozzle rod (3) is provided with a fluid channel (32) along the axial direction, the front end of the fluid channel (32) is communicated with the nozzle (31) and is communicated with the jet orifice (12) through the nozzle (31), and the rear end of the fluid channel is opened and is communicated with the spray head inner cavity (11) to be used as a fluid inlet; the periphery of the rear part of the nozzle rod (3) is in contact fit with the inner wall of the spray head inner cavity (11), so that the nozzle rod (3) revolves around the inner wall of the spray head inner cavity (11) under the action of rotating fluid and rotates automatically during working;

wherein, the periphery of the nozzle rod (3) is also provided with spiral teeth (33); when the flow direction of the rotating fluid is counterclockwise rotation on a sectional view of the spray head projected from the rear to the front, the helical teeth (33) are required to be left-handed; when the flow direction of the rotating fluid is clockwise rotation on a sectional view projected from the back to the front of the spray head, the spiral tooth (33) is required to be right-handed; thus, in operation, the rotating fluid moves within the helical teeth (33) to generate a thrust force on the nozzle rod (3) in a direction opposite to that of the rotating fluid.

2. The high-velocity jet rotatable spray head of claim 1, wherein: the cross section of the spiral teeth (33) is trapezoidal, rectangular or triangular.

3. The high-velocity jet rotatable spray head of claim 1, wherein: a central hole is arranged on the nozzle rod (3) along the axis of the nozzle rod to serve as the fluid channel (32), a step hole section (321) is arranged at an orifice at the front end of the nozzle rod (3) of the central hole, and the step hole section (321) is smaller than the central hole to form a blocking step surface (322) facing the rear end of the nozzle rod; the nozzle (31) is composed of a small-diameter section (311) at the front part and a large-diameter section (312) at the rear part, the diameter of the small-diameter section (311) is smaller than that of the large-diameter section (312), the small-diameter section (311) of the nozzle (31) is embedded into a step hole section (321) of the nozzle rod (3) in interference fit, and the large-diameter section (312) of the nozzle (31) is blocked by the blocking step surface (322) of the nozzle rod (3).

4. The high-velocity jet rotatable spray head of claim 1, wherein: the nozzle rod (3) comprises a rod main body (34) and a friction sleeve (35), wherein the friction sleeve (35) is arranged on the rear excircle of the rod main body (34) in an interference fit mode, and the friction sleeve (35) is in contact fit with the inner wall of the spray head inner cavity (11).