WO2016011839A1

WO2016011839A1 - Self-cleaning water nozzle

Info

Publication number: WO2016011839A1
Application number: PCT/CN2015/079141
Authority: WO
Inventors: 赵杰
Original assignee: 赵杰
Priority date: 2014-07-19
Filing date: 2015-05-17
Publication date: 2016-01-28
Also published as: CN104084327A; CN104084327B

Abstract

A self-cleaning water nozzle, comprising a shell (1) and a rear cover (2). A water pipe (3) and a taper sleeve (4) are disposed in an inner cavity of the shell (1). The front portion of the water pipe (3) is inserted into a sleeve cavity of the taper sleeve (4) in a sealed mode. The front end of a pipe cavity is communicated with the sleeve cavity of the taper sleeve (4) through a water outlet (3a) in the wall of the pipe cavity, and the rear end of the pipe cavity is communicated with an external water source. The taper sleeve (4) is provided with a water spray opening (4a), and the water spray opening (4a) is blocked or opened by means of a fine needle (3b) disposed at the front end of the water pipe (3). The outer circle of the water pipe (3) is fixedly connected to a piston (6), a first air cavity (7) is formed between the piston (6) and the taper sleeve (4a), and a second air cavity (8) is formed between the taper sleeve (4) and the inner wall of the shell. A front spring (9) and a rear spring (10) are disposed between the piston (6) and the taper sleeve (4) and between the piston (6) and the rear cover respectively. According to the nozzle, the water spray opening can be internally blocked or opened automatically, the situation that the water spray opening is blocked abnormally due to the fact that external dust enters the water spray opening is completely avoided, and a water channel is kept unblocked. Fine water particles can be sprayed out through the nozzle, the action area of water mist on surrounding dust can be enlarged, and the dust suppression effect is improved.

Description

Self-cleaning water jet

Technical field

The invention relates to a dust suppression device, in particular to a self-cleaning water jet.

Background technique

Common water sprinklers generally include a water pipe. One end of a water pipe is connected to a water supply source, and the other end is a water outlet. By setting the pressure at the water inlet end of the water pipe to be greater than the pressure at the water outlet end, the water entering the pipe is at a pressure difference. Under the action of the discharge from the water outlet to the outside. To adjust the range of water spray, it is usually achieved by adjusting the size of the spout or by rotating the spout.

When the water jet nozzle of this structure is used in a dusty place such as mining, cement manufacturing, engineering construction, etc., if the water spray equipment is deactivated for a long time, the external dust can easily enter the nozzle from the water outlet of the nozzle. Causing the nozzle to block, which affects its normal use. In addition, the water jets sprayed by such water jets are large and even columnar, and the area of action on the surrounding dust is small, and the dust suppression effect is poor.

Summary of the invention

The invention discloses a self-cleaning water jet head, which aims to solve the above defects existing in the existing water jet head.

The present invention adopts the following technical solutions to achieve the above objectives:

A self-cleaning water jet head comprises a casing and a rear cover, wherein the inner cavity of the casing is provided with a water pipe and a taper sleeve, and a front portion of the water pipe is inserted and sealed in a sleeve cavity of the taper sleeve, the water pipe The front end of the tube communicates with the sleeve of the sleeve through a water outlet hole provided on the wall of the tube, and the rear end of the tube is connected with an external water source; a spout is provided at the cone of the cone sleeve. The water spout is fixed to the front end of the casing and is exposed outside the casing, and the spout is blocked by a small needle provided at the front end of the water pipe by forward and backward movement or Opened; the outer ring of the water pipe is fixedly connected with a piston, the piston is spaced apart from the taper sleeve into a first air cavity; the taper sleeve forms a second air cavity with the inner wall of the casing; the piston A front spring and a rear spring are respectively disposed between the taper sleeve and the back cover.

The first air chamber communicates with an external air source through an air inlet provided on the housing.

The front end of the second air chamber communicates with the outside through an air nozzle provided on the casing, and the rear end thereof communicates with the first air chamber through a groove provided on the outer wall of the taper sleeve.

The grooves are chutes that are inclined in the same direction.

The air nozzle is disposed around the water spout.

The strength of the front spring is greater than the strength of the rear spring.

The invention has the beneficial effects that the invention automatically blocks or opens the water spout from the inside by a fine needle under the pressure difference, thereby completely avoiding the external dust entering and causing the nozzle to be abnormally blocked, so as to keep the water channel unblocked. . In addition, the invention can form a high-speed rotating airflow inside, and impacts the water sprayed by the water jet nozzle into fine particles, thereby contributing to increasing the area of action of the water mist on the surrounding dust and improving the dust suppression effect.

DRAWINGS

1 is an external view of the overall structure of an embodiment of the present invention

Figure 2 is an exploded view of Figure 1.

Figure 3 is a cross-sectional view showing the overall structure of an embodiment of the present invention

4 is a schematic structural view of a taper sleeve according to an embodiment of the present invention;

5 is a schematic structural view of a water pipe according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a partial structure when idle according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a partial structure during operation according to an embodiment of the present invention;

Figure 8 is a partial cross-sectional view of the housing of the embodiment of the present invention

The figures are marked as: 1, housing, 1a, through hole, 1b, air inlet, 1c, air nozzle, 2, rear cover, 3, water pipe, 3a, water outlet, 3b, fine needle, 4, taper sleeve, 4a, water spout, 4b, chute, 5, sealing ring, 6, piston, 7, first air chamber, 8, second air chamber, 9, front spring, 10, rear spring.

detailed description

The invention is further described below in conjunction with the drawings and specific embodiments.

Refer to Figure 1-7:

A self-cleaning water jet head includes a housing 1 and a rear cover 2.

A water pipe 3 and a taper sleeve 4 are disposed in the inner cavity of the casing 1, and the front portion of the water pipe 3 is inserted into the sleeve cavity of the taper sleeve 4, and the sealing edge of the sleeve sleeve 4 is sealed by a sealing ring 5;

The front end of the tube 3 of the water pipe 3 communicates with the sleeve of the taper sleeve 4 through a plurality of water outlet holes 3a provided in the wall of the tube 3, and the rear end of the water tube 3 passes through the back cover 2 to be connected to an external water source;

A spout 4a is disposed at the taper of the taper sleeve 4, and the spout 4a is inserted into a through hole 1a provided at the front end of the casing 1, and the spout 4a is passed through a fine needle 3b provided at the front end of the water pipe 3 Block or open when moving;

A piston 6 is fixedly connected to the outer ring of the water pipe 3, and the piston 6 and the taper sleeve 4 are spaced apart into a first air chamber 7, and the first air chamber 7 can be connected to an external air source through an air inlet 1b provided on the casing 1. ;

A second air chamber 8 is formed between the sleeve 4 and the inner wall of the housing 1. The front end of the second air chamber 8 communicates with the outside through an air nozzle 1c, and the air nozzle 1c is disposed on the housing 1 around the water nozzle 4a. The rear end of the second air chamber 8 communicates with the first air chamber 7 through a chute 4b which is disposed on the outer wall of the taper sleeve 4 and which is inclined to the same side;

A front spring 9 and a rear spring 10 are respectively sleeved on the water pipes 3 on the front and rear sides of the piston 6. The front spring 9 is disposed between the sleeve 4 and the piston 6, and the rear spring 9 is disposed between the piston 6 and the rear cover 2. The strength of the front spring 9 is greater than the strength of the rear spring 10.

The working principle of the invention is as follows: as shown in Fig. 7, when the nozzle enters the working state, the outside water passes The lumen and drain hole 3a of the water pipe 3 enters the sleeve of the taper sleeve 4, and the air continues to enter the first air chamber 7 through the air inlet 1b from the external air source. Since the fine needle 3b completely blocks the water spout 4a of the taper sleeve 5 at this time, the water is temporarily unable to be discharged; as the air pressure in the first air chamber 7 continues to rise, the internal pressure and the thrust of the front spring 9 against the piston 6 When the sum is greater than the tension of the rear spring 10, the piston 6 retreats, the piston 6 drives the water pipe 3 to retreat, and the fine needle 3b at the front end of the water pipe 3 also retreats until the fine needle 3b is completely separated from the water spout 4a, and the spout 4a is opened. The water accumulated in the sleeve of the sleeve 4 is ejected from the nozzle 4a to the outside. At the same time, the air in the first air chamber 7 enters the second air chamber 8 through the chute 4b on the outer wall of the sleeve 4, forming a high-speed swirling airflow in the second air chamber 8, and the high-speed swirling airflow passes around the water spout. The air nozzle 1c provided in 4a is ejected, and the water ejected from the spout 4a collides with each other at a high speed, and the water is broken into fine particles and diffused to the periphery.

As shown in Figure 6, when the nozzle is finished, the outside water and air are stopped. The air pressure in the first air chamber 7 is lowered. When the sum of the internal pressure and the thrust of the front spring 9 against the piston 6 is smaller than the tension of the rear spring 10, the piston 6 is advanced, and the water pipe 3 and the fine needle 3b are also advanced until the thin The needle 3b blocks the water spout 4a from the inside, and external dust cannot enter the spout 4a and the inside of the head.

Claims

A self-cleaning water jet head comprising a casing and a back cover, wherein the casing inner cavity is provided with a water pipe and a taper sleeve, and the front portion of the water pipe is inserted and sealed in the sleeve cavity of the taper sleeve The front end of the tube of the water pipe communicates with the sleeve cavity of the taper sleeve through a water outlet hole provided on the wall of the water pipe, and the rear end of the pipe cavity of the water pipe communicates with an external water source; a spray is arranged at the cone head of the taper sleeve a water nozzle, the water spout is fixed to the front end of the casing, and is exposed outside the casing, and the water spout is blocked or opened by a fine needle provided at the front end of the water pipe by back and forth movement; a piston is fixedly connected to the outer ring of the water pipe, and the piston is spaced apart from the taper sleeve into a first air cavity; a second air cavity is formed between the taper sleeve and an inner wall of the casing; the piston and the piston A front spring and a rear spring are respectively disposed between the taper sleeve and the back cover.
A self-cleaning water jet according to claim 1, wherein the first air chamber communicates with an external air source through an air inlet provided on the housing.
The self-cleaning water jet head according to claim 1, wherein a front end of the second air chamber communicates with the outside through an air nozzle provided on the housing, and a rear end thereof is disposed through the The groove on the outer wall of the sleeve is in communication with the first air chamber.
A self-cleaning water jet head according to claim 1, wherein said groove is a chute inclined in the same direction.
A self-cleaning water jet according to claim 1, wherein said air nozzle is provided around said water spout.
A self-cleaning water jet according to claim 1, wherein the strength of the front spring is greater than the strength of the rear spring.