阅读说明：本技术 一种高压除锈喷头 (High-pressure rust removal spray head ) 是由 方苏毅 颜瑶 褚文月 汪世林 李玉乐 陈甜 于 2019-08-16 设计创作，主要内容包括：一种高压除锈喷头,包括喷头本体,所述喷头本体的出水口处设有至少一个冲击件,所述冲击件通过弹性件与喷头本体连接,所述冲击件设置在高压液体的喷射范围内,所述冲击件随着高压液体和弹性件的作用进行平行于喷头本体轴向的往复运动。本发明克服现有技术的除锈现场清洁困难,且对环境污染严重；喷头内壁易磨损,使用寿命短的问题,具有以下有益效果：无需回收磨料和清洁现场,节省除锈成本；保证除锈效果的同时更环保；提高使用寿命；扩大出水面积,防止水雾反喷伤害使用人员或影响其视野。(The high-pressure rust removal spray head comprises a spray head body, wherein at least one impact piece is arranged at a water outlet of the spray head body and is connected with the spray head body through an elastic piece, the impact piece is arranged in the spray range of high-pressure liquid, and the impact piece performs reciprocating motion parallel to the axial direction of the spray head body under the action of the high-pressure liquid and the elastic piece. The invention overcomes the defects of difficult cleaning of the rust removal site and serious environmental pollution in the prior art; the problem that the inner wall of the spray head is easy to wear and short in service life is solved, and the spray head has the following beneficial effects: the abrasive material does not need to be recovered and the site does not need to be cleaned, so that the rust removal cost is saved; the rust removal effect is ensured, and meanwhile, the environment is protected; the service life is prolonged; the water outlet area is enlarged, and the water mist back spray is prevented from hurting users or influencing the visual field of the users.)

1. The high-pressure rust removal spray head comprises a spray head body (1) and is characterized in that at least one impact piece (2) is arranged at a water outlet of the spray head body (1), the impact piece (2) is connected with the spray head body (1) through an elastic piece, the impact piece (2) is arranged in the spraying range of high-pressure liquid, and the impact piece (2) performs reciprocating motion parallel to the axis of the spray head body (1) along with the action of the high-pressure liquid and the elastic piece.

2. A high-pressure rust removing nozzle as claimed in claim 1, characterized in that the nozzle body (1) is provided with a fixing ring (22) fixed on the outer circumference thereof, and the impact member (2) is connected to the fixing ring (22) by an elastic member arranged in parallel with the axis of the nozzle body (1).

3. The high-pressure rust removing spray head as claimed in claim 2, wherein the spray head body (1) is provided with a cylindrical outer spray head (3), the outer spray head (3) is sleeved on the outer circumference of the spray head body (1), a cavity (31) is arranged in the outer spray head (3), the cavity (31) is communicated with the interior of the spray head body (1), and the water outlet of the spray head body (1) and the water outlet of the cavity (31) form an inner-outer double-layer water outlet.

4. The high-pressure rust removing spray head as claimed in claim 2, wherein the elastic member is a tension spring (21), and two ends of the tension spring (21) are respectively connected with the fixed ring (22) and the impact member (2).

5. A high-pressure rust removing nozzle as claimed in claim 3, characterized in that the axial cross-section of the outer nozzle (3) is conical, and the cone is gradually narrowed towards the water outlet end.

6. A high-pressure rust removing spray head as claimed in claim 3, characterized in that a sealing ring (11) is arranged at the connection of the spray head body (1) and the outer spray head (3).

7. The high-pressure rust removing spray head is characterized in that a diffusion cover (4) is fixedly sleeved at a water outlet of the spray head body (1), one end of the diffusion cover (4) is fixedly connected with the spray head body (1) and the other end of the diffusion cover is an open end, and the impact piece (2) is fixed at the open end of the diffusion cover (4) through an elastic piece.

8. A high-pressure rust removing nozzle according to claim 7, characterized in that the elastic member comprises a plurality of elastic cords (41) arranged in parallel with each other, both ends of the elastic cords (41) are fixed at the open end of the diffusion cover (4), and the elastic cords (41) are arranged in parallel with the radial direction of the diffusion cover.

9. A high-pressure rust removing nozzle according to claim 7, characterized in that the diffuser (4) is flared with an outward opening.

10. A high pressure rust removing nozzle according to claims 1-9, characterized in that the impact member (2) is a steel ball, the diameter of which is smaller than the caliber of the water outlet.

Technical Field

The invention relates to the technical field of ship maintenance, in particular to a high-pressure rust removal spray head.

Background

The ship surface treatment is the first step of ship coating and is also an important step for maintaining the performance of the ship steel plate material. According to the statistical results, the following factors are shown to influence the service life of the coating: the rust removal quality of the outer layer of the steel is 49.5 percent; coating process conditions are 26.5%, and the coating thickness is 19.1%; the variety of the coating is 4.9 percent. It follows that the quality of the surface treatment of a ship is a critical factor affecting the life of the hull.

The hull surface treatment method comprises manual treatment, chemical treatment, mechanical treatment and the like.

Manual processes typically employ hammers, shovels, scrapers, steel brushes, and the like. Ordinary thick rust spots are first loosened with a hammer and then removed with a spatula. The method has the advantages of simple operation, low equipment cost, high labor intensity, low rust removal efficiency, severe rust removal environment and great harm to the health of constructors, and secondly, the scale such as oxide on the surface of the ship body is difficult to remove, and the rust removal effect is poor.

The chemical treatment mainly adopts a treatment method of chemically reacting acid with metal oxide so as to remove metal rust products on the surface, which is commonly called acid cleaning and rust removal, and the concentration of acid cleaning solution and acid cleaning time are the key points of the method. The rust removing method has the advantages of low labor intensity and good rust removing effect, the surface of the steel plate after rust removal can reach the required roughness and cleanliness, but the method is only carried out in a workshop, obviously, the method is not easy to be applied to ship rust removal in a large scale, and the popularization of chemical rust removal is limited due to the higher medicament equipment cost.

The mechanical treatment is realized by a small air motor or an electric motor which is mainly driven by the electric motor or compressed air, a proper derusting device is arranged to carry out reciprocating or rotating motion so as to meet the derusting requirements of various occasions, but an oxide layer cannot be removed, the surface roughness is high, the quality requirement of high-quality surface treatment cannot be met, an abrasive material cannot be recycled generally, and the derusting site is troublesome to clean. Environmental pollution is serious, and the health of workers is greatly affected, so that the use of the method is gradually limited in recent years. Compared with manual rust removal, mechanical rust removal has the following unique advantages: the rust removing efficiency is obviously improved, the cost is lower, and the rust removing device is also a rust removing mode which is the most widely applied nowadays.

For example, a "sand-water mixed rust removing spray head" disclosed in chinese patent literature, whose publication No. CN202668365U, includes a spray head seat and a current stabilizer fixedly disposed in the spray head seat, the head of the current stabilizer is fixedly disposed with a flow guide sleeve, the other end of the flow guide sleeve is fixedly disposed with a water outlet, and the current stabilizer and the water outlet are located on the same straight line. The utility model improves the derusting efficiency by spraying the mixed sand in water in a high pressure mode, and has the disadvantages that the sand cannot be recycled, a large amount of dust pollution is often caused, and the peripheral cleaning is troublesome; and the sand flowing at high speed can also cause abrasion to the inner wall of the spray head, thereby influencing the service life of the spray head.

Disclosure of Invention

The invention aims to overcome the defects that the sand blasting is difficult to recover, the rust removal site is difficult to clean and the environmental pollution is serious in the prior art; the problem that the shower nozzle inner wall easily weares and teares, life is short provides a high pressure rust cleaning shower nozzle, strikes the piece with the telescopic and replaces the sand grain, and strikes the piece and fix on the shower nozzle, need not to retrieve, has saved the step of site cleaning, and does not have the pollution to the environment, and very environmental protection, the difficult wearing and tearing of shower nozzle inner wall, long service life.

In order to achieve the purpose, the invention adopts the following technical scheme:

the high-pressure rust removal spray head comprises a spray head body, wherein at least one impact piece is arranged at a water outlet of the spray head body and is connected with the spray head body through an elastic piece, the impact piece is arranged in the spray range of high-pressure liquid, and the impact piece performs reciprocating motion parallel to the axial direction of the spray head body under the action of the high-pressure liquid and the elastic piece.

The invention is characterized in that the impact piece is arranged to replace sand grains, the sand grains are flushed outwards by the impact force of the high-pressure rust removing liquid to hit the working surface to be subjected to rust removal, the impact piece is pulled back by the elastic piece, the impact piece does reciprocating motion under the action force opposite to the high-pressure rust removing liquid and the elastic piece, the working surface is hit repeatedly and vertically, and the rust removing efficiency is improved.

Preferably, the outer circumference of the nozzle body is fixedly sleeved with a fixing ring, the impact member is connected to the fixing ring through an elastic member, and the elastic member is arranged in parallel to the axis of the nozzle body.

The fixing ring is fixedly provided with a plurality of impact pieces, the impact pieces surround the outer side of the water outlet, and liquid sprayed out of the water outlet directly impacts a working surface on one hand and drives the impact pieces to impact the working surface on the other hand; because all impact members are fixed on the fixing ring, the impact members are convenient to replace, and all impact members can be taken down when the fixing ring is taken down. The elastic piece ensures that the impact direction of the impact piece is perpendicular to the working surface.

Preferably, the nozzle body is provided with a cylindrical outer nozzle, the outer nozzle is sleeved on the outer circumference of the nozzle body, a cavity is arranged in the outer nozzle and is communicated with the inside of the nozzle body, and the water outlet of the nozzle body and the water outlet of the cavity form an inner-outer double-layer water outlet.

Through the annular outer shower nozzle of one deck of overlapping again in the impact member outside, inside and outside two-layer rivers also can be with the impact member restriction in the middle of rivers when reinforcing discharge, can strike the working face perpendicularly better, avoid appearing unnecessary displacement, raise the efficiency.

Preferably, the elastic part is a tension spring, and two ends of the tension spring are respectively connected with the fixing ring and the impact part.

The tension spring with better rigidity is selected, so that the impact of high-pressure liquid can be borne, and the impact direction of the tension spring can be ensured to be vertical to the working surface.

Preferably, the axial section of the outer nozzle is conical, and the conical shape is gradually narrowed towards the water outlet end.

The high-pressure liquid sprayed by the conical outer spray head is inclined inwards at a certain angle, so that the high-pressure liquid is more fully contacted with the impact piece, the impact force is stronger, and the rust removing effect is better.

Preferably, a sealing ring is arranged at the joint of the spray head body and the outer spray head.

The sealing ring enables the nozzle to have better sealing performance and prevents water leakage.

Preferably, a diffusion cover is fixedly sleeved at the water outlet of the spray head body, one end of the diffusion cover is fixedly connected with the spray head body, the other end of the diffusion cover is an opening end, and the impact piece is fixed at the opening end of the diffusion cover through an elastic piece.

The other scheme is that a diffusion cover is arranged on the outer cover of the spray head body, and on one hand, the diffusion cover is used for fixing the impact piece in front of the water outlet; on the other hand, the flow guide function is achieved. The elastic piece helps the impact piece to be pulled back in time when being brought out by high-pressure liquid to impact outwards, so as to form reciprocating vibration perpendicular to the working surface, and the impact piece continuously impacts the working surface.

Preferably, the elastic member comprises a plurality of elastic ropes arranged in parallel, two ends of each elastic rope are fixed at the opening end of the diffusion cover, and the elastic ropes are arranged in parallel to the radial direction of the diffusion cover.

The opening end of the diffusion cover is provided with a plurality of elastic ropes, so that the number of impact pieces can be increased, and the impact efficiency is improved; the elastic rope arranged in the radial direction can better apply force in the vertical direction to control the impact piece to vibrate vertical to the working surface.

Preferably, the diffuser cover is flared with an outward opening.

The trumpet-shaped diffusion cover enlarges the water outlet area, can also avoid the spray head from producing back spray to users due to the resistance of air when spraying high-pressure liquid, and plays a good role in protecting the users.

Preferably, the impact piece is a steel ball, and the diameter of the steel ball is smaller than the caliber of the water outlet.

The steel ball has good strength, the contact surface of the working surface is even when the steel ball impacts each time, and the rust removal effect is stable.

Therefore, the invention has the following beneficial effects: (1) the impact piece is arranged to replace traditional abrasives such as sand grains and the like, so that the abrasives do not need to be recovered and the site does not need to be cleaned, and the rust removal cost is saved; (2) the dust pollution caused by the traditional grinding material is avoided, and the rust removing effect is ensured and the environment is protected; (3) the abrasion of the abrasive to the inner wall of the spray head is avoided, and the service life is prolonged; (4) the elastic piece is arranged to pull back the impact piece, so that the surface of the ship is continuously impacted under the action of the high-pressure liquid and the elastic piece in opposite directions, and the rust removal effect is enhanced; (5) the water outlet area is increased by arranging two layers of water outlets, and the elastic part is guided to vertically impact the surface of the ship; (6) through setting up the diffusion cover, when convenient fixed impact piece, enlarge the water outlet area, prevent that water smoke from backspraying and injuring the user or influencing its field of vision.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is another schematic structure of the present invention.

In the figure: 1. the nozzle comprises a nozzle body, 11, a sealing ring, 12, a through hole, 2, an impact piece, 21, a tension spring, 22, a fixing ring, 3, an outer nozzle, 31, a cavity, 4, a diffusion cover, 41 and an elastic rope.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.