阅读说明：本技术 一种喷涂装置 (Spraying device ) 是由 王亮 高华 梁东伟 赵旭升 余章亮 宋军娜 梁鑫磊 于 2020-05-25 设计创作，主要内容包括：本发明为一种喷涂装置,包括防护壳体、防护罩体以及喷涂工具,防护壳体为顶部和一侧开口的箱式结构,防护罩体为底部开口的箱式结构,防护罩体能上下滑动地套设在防护壳体内,且防护罩体的一侧突出防护壳体的侧部开口端设置。喷涂工具包括固定在防护罩体内的喷管。本发明的喷涂装置能够避免喷涂过程中涂料散发到大气中,避免涂料飞溅到外部,实现了安全喷涂,避免了环境污染,保证了操作工人及周边居民的身体健康。(The invention relates to a spraying device which comprises a protective shell, a protective cover body and a spraying tool, wherein the protective shell is of a box-type structure with an opening at the top and one side, the protective cover body is of a box-type structure with an opening at the bottom, the protective cover body can be sleeved in the protective shell in a vertically sliding mode, and one side of the protective cover body protrudes out of an opening end of the side part of the protective shell. The spraying tool comprises a spray pipe fixed in the protective cover body. The spraying device can prevent the coating from being dispersed into the atmosphere in the spraying process, prevent the coating from splashing to the outside, realize safe spraying, avoid environmental pollution and ensure the health of operators and surrounding residents.)

1. A spray coating device, comprising:

the protective shell is vertically arranged and has a box-type structure with an opening at the top and one side;

the protective cover body is of a box-type structure with an opening at the bottom, the protective cover body can be sleeved in the protective shell in a vertically sliding mode, and one side of the protective cover body protrudes out of the opening end of the side part of the protective shell;

and the spraying tool comprises a spray pipe fixed in the protective cover body.

2. A spray assembly according to claim 1,

the bottom of the protective shell is provided with a material receiving groove.

3. A spray assembly according to claim 1,

a mounting rod is formed by extending downwards at the bottom of the protective cover body and at a position far away from the side opening end of the protective shell, and a roller is horizontally and slidably arranged at one side, facing the side opening end of the protective shell, of the bottom end of the mounting rod; the horizontal sliding direction of the roller is perpendicular to the side opening end of the protective shell, and the axial direction of the roller is arranged along the vertical direction.

4. A spray assembly according to claim 3,

the bottom end of the mounting rod extends to the side opening end of the protective shell to form an upper mounting plate and a lower mounting plate which are arranged in parallel at intervals, a horizontal sliding groove extending in the horizontal direction is arranged on the upper mounting plate, and the extending direction of the horizontal sliding groove is perpendicular to the side opening end of the protective shell;

the roller is embedded between the upper mounting plate and the lower mounting plate and comprises a fixed shaft and a wheel body sleeved on the outer side of the fixed shaft through a bearing, and the axial direction of the fixed shaft is arranged along the vertical direction; and a longitudinal screw is inserted into the transverse sliding groove and is fixed with the fixed shaft through threads.

5. A spray assembly according to claim 3,

and two side edges of the protective shell close to the side opening end are respectively fixed with a brush plate.

6. A spray assembly according to claim 1,

the side part of the protective shell, which is opposite to the opening end of the side part of the protective shell, is provided with a longitudinal sliding groove extending along the vertical direction, a transverse screw is inserted into the longitudinal sliding groove, and the transverse screw is fixed with the protective cover body through threads.

7. A spray assembly according to claim 1,

the spray pipe comprises a connecting pipe fixed in the protective cover body and a plurality of nozzles arranged on the connecting pipe, the nozzle of each nozzle faces the opening end of the side part of the protective cover body, and the upper end of the connecting pipe is penetrated out from the top of the protective cover body.

8. A spray assembly according to claim 7,

the spraying tool further comprises a storage tank and a pressure pump, one end of the pressure pump is connected with the storage tank through a pipeline, and the other end of the pressure pump is connected with the upper end of the connecting pipe through a pipeline.

9. A spray assembly according to claim 7,

the length direction of connecting pipe extends along vertical direction, the connecting pipe is including a plurality of sub-connecting pipes of ability releasable connection ground, every be equipped with one on the sub-connecting pipe the nozzle.

10. A spray assembly according to claim 9,

each sub-connecting pipe comprises a first pipe body and a second pipe body which are fixed up and down, and the nozzle is arranged on the second pipe body; the outer diameter of the first pipe body is the same as the inner diameter of the second pipe body, and the first pipe body located below the two adjacent sub-connecting pipes can be inserted into the second pipe body located above the first pipe body.

11. A spray assembly according to claim 10,

the upper end of the second pipe body is tightly attached to the outer wall of the first pipe body and is provided with a positioning block, the inner wall of the lower end of the second pipe body is downwards provided with a positioning groove, and the positioning block positioned below the two adjacent sub-connecting pipes can be inserted into the positioning groove positioned above the two adjacent sub-connecting pipes.

12. A spray assembly according to claim 11,

and a plug is arranged at the bottom end of the sub-connecting pipe at the bottom.

13. A spray assembly according to claim 12,

every the lower extreme inner wall of second body just is located the top of constant head tank is equipped with the internal thread the outer wall of end cap is equipped with the external screw thread and can with the internal thread is fixed.

Technical Field

The invention relates to the technical field of bridge anti-collision pier protection, in particular to a spraying device which is particularly suitable for spraying permeable waterproof anticorrosive materials for bridge anti-collision piers.

Background

Because of the influence of adverse weather conditions, roads in northern China are often accumulated with snow and frozen in winter, and a maintenance department uses chemical substances such as deicing salt, snow-melting agent and the like in a large amount in the process of communicating. The chemical substances such as sodium chloride, calcium chloride, magnesium chloride and additives thereof, which are used as snow-melting agents, directly attack the road surface and the bridge body, particularly the concrete crash pad, and are most seriously damaged. The concrete structure is provided with holes and can absorb water in a dry mode, and particularly, the concrete structure with micro cracks is higher in water absorption capacity. The water body dissolved with harmful substances flows in the holes and cracks through the stress of freeze-thaw cycle, and the continuous damage to the concrete member is long-term and deep. Chemical corrosion components in the deicing salt and snow-melting agent migrate and permeate into concrete, and generate salt freezing and salt corrosion under the combined action of the deicing salt and the snow-melting agent and water, so that not only is the surface layer of the concrete damaged, but also the surface layer of the concrete is gradually expanded into the concrete, and further large-area severe corrosion is caused. Therefore, the protection of the crash barrier is not very gentle.

In order to prevent freeze-thaw salt corrosion of the concrete of the inner side anti-collision pier. At present, the method of coating an anticorrosive material on the surface of concrete is generally adopted, so that the service life of the concrete is prolonged. The most common is to coat permeable silane concrete road and bridge waterproof, anticorrosion and waterproofing agent. The molecular structure in the silane system of the product can penetrate into the concrete to generate complex physical and chemical reactions with cement hydration products, and new substances are generated in the concrete. The wetting angle between the pore wall of the set cement and water is changed, and the material has stronger hydrophobicity and forms a water repellent treatment layer. Thereby preventing moisture erosion. The method can effectively prevent the base material from corroding, loosening, stripping and mildewing the concrete and the internal reinforcing steel bar structure due to water seepage, sunshine, acid rain and seawater erosion to cause diseases, and improve the service life of the building. The problem that the roads and bridges in northern areas are sprayed with a large amount of salt snow-melting agent in winter to cause corrosion damage to concrete and steel bars can be solved; the concrete can also be dampproof and dustproof, and can prevent bacteria and mould from generating on the surface of the concrete; the durability of the concrete surface layer is improved, the color of the concrete is not changed and influenced, the corrosion of chloride ions, acid rain, automobile exhaust and the like in the snow-melting agent on the concrete surface can be effectively prevented, and the service life of bridges and various concrete buildings is prolonged.

However, this material is in liquid form, has a lower density than water, and is extremely volatile. There are two common treatment coating methods currently used: one is manually brushing with a roller brush. The original coating method has the advantages of low efficiency, high labor intensity and unsuitability for large-area construction. The other is spraying construction, the spraying construction efficiency is fast, and the labor intensity is less than that of manual coating. However, the conventional spray coating method has the following disadvantages: because the spraying atomization form is adopted, about 30 percent of materials are emitted into the atmosphere, spraying workers can easily inhale respiratory tracts and irritate noses and throats, and serious irritation can be caused by repeated or long-time exposure, so that health hazards are caused to the operating workers; the splashed liquid can dissolve asphalt on the pavement, so that the pavement is damaged; the large amount of product splashed, atomized into the air, results in material waste. In addition, a large amount of atomized fine particles are easy to fly with wind, so that the atmospheric environment is polluted, and the life quality and the body health of surrounding residents are further harmed.

Therefore, the inventor provides a spraying device by virtue of experience and practice of related industries for many years so as to overcome the defects of the prior art.

Disclosure of Invention

The invention aims to provide a spraying device which can prevent coating from being dispersed into the atmosphere in the spraying process, prevent the coating from splashing to the outside, realize safe spraying, avoid environmental pollution and ensure the health of operators and surrounding residents.

The object of the invention is achieved in that the spray device comprises:

the protective shell is vertically arranged and has a box-type structure with an opening at the top and one side;

the protective cover body is of a box-type structure with an opening at the bottom, the protective cover body can be sleeved in the protective shell body in a vertically sliding manner, and one side of the protective cover body protrudes out of the opening end of the side part of the protective shell body;

and the spraying tool comprises a spray pipe fixed in the protective cover body.

In a preferred embodiment of the present invention, the bottom of the protective casing is provided with a material receiving groove.

In a preferred embodiment of the present invention, a mounting rod is formed at the bottom of the protective cover and extends downward away from the side opening end of the protective housing, and a roller is horizontally slidably disposed at one side of the bottom end of the mounting rod facing the side opening end of the protective housing; the horizontal sliding direction of the roller is perpendicular to the side opening end of the protective shell, and the axial direction of the roller is arranged along the vertical direction.

In a preferred embodiment of the present invention, the bottom end of the mounting rod extends to the side opening end of the protective casing to form an upper mounting plate and a lower mounting plate which are arranged in parallel at intervals, the upper mounting plate is provided with a horizontal sliding chute extending in a horizontal direction, and the extending direction of the horizontal sliding chute is perpendicular to the side opening end of the protective casing; the roller is embedded between the upper mounting plate and the lower mounting plate and comprises a fixed shaft and a wheel body sleeved on the outer side of the fixed shaft through a bearing, and the axial direction of the fixed shaft is arranged along the vertical direction; a longitudinal screw is inserted in the transverse sliding groove and is fixed with the fixed shaft through threads.

In a preferred embodiment of the present invention, a brush plate is fixed to each of both side edges of the protective case near the side opening ends thereof.

In a preferred embodiment of the present invention, a longitudinal sliding groove extending in the vertical direction is provided on a side portion of the protective casing facing the opening end of the side portion, a transverse screw is inserted into the longitudinal sliding groove, and the transverse screw is fixed to the protective casing body by a screw thread.

In a preferred embodiment of the present invention, the nozzle tube includes a connecting tube fixed inside the protective cover body and a plurality of nozzles disposed on the connecting tube, the nozzle of each nozzle is disposed toward the side opening end of the protective cover body, and the upper end of the connecting tube penetrates through the top of the protective cover body.

In a preferred embodiment of the present invention, the spraying tool further includes a storage tank and a pressure pump, one end of the pressure pump is connected to the storage tank through a pipeline, and the other end of the pressure pump is connected to the upper end of the connection pipe through a pipeline.

In a preferred embodiment of the present invention, the connecting pipe extends in a vertical direction in a length direction thereof, and includes a plurality of sub-connecting pipes detachably connected to each other, each of the sub-connecting pipes being provided with a nozzle.

In a preferred embodiment of the present invention, each of the sub-connection pipes includes a first pipe and a second pipe fixed up and down, and the nozzle is disposed on the second pipe; the outer diameter of the first pipe body is the same as the inner diameter of the second pipe body, and the first pipe body located below the two adjacent sub-connecting pipes can be inserted into the second pipe body located above the first pipe body.

In a preferred embodiment of the present invention, a positioning block is disposed at the upper end of the second tube body and clings to the outer wall of the first tube body, a positioning groove is disposed downward at the inner wall of the lower end of the second tube body, and the positioning block located below of two adjacent sub-connection tubes can be inserted into the positioning groove located above.

In a preferred embodiment of the present invention, a plug is disposed at the bottom end of the sub-connecting tube at the bottom.

In a preferred embodiment of the present invention, an inner thread is disposed on the inner wall of the lower end of each second tube above the positioning groove, and an outer thread is disposed on the outer wall of the plug and can be fixed with the inner thread.

According to the spraying device, the single-face cavity structure is formed in the protective shell through the matching of the protective shell and the protective cover body, when the spraying device is used, the opening end of the single-face cavity structure is aligned to and attached to the side surface of the anti-collision pier, so that a closed space can be formed, the spraying device can be better matched with the anti-collision pier through the up-and-down sliding of the protective cover body, and the gap between the protective cover body and the top of the anti-collision pier is reduced as much as possible. Therefore, can play better safety protection effect in the spraying process, prevent volatilizing, diffusion and splashing of coating in the spraying process, effectively avoid the pollution to the atmospheric environment, the health hazard to operating personnel and peripheral residents and the dissolving damage to asphalt pavement or other objects, ensure the quality of environment and the quality of life and the health of residents, simultaneously can also avoid the waste of coating, save resources, reduce energy consumption, improve economic benefits

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.

Wherein:

FIG. 1: the structure of the spraying device provided by the invention is schematically shown as I.

FIG. 2: the structure of the spraying device provided by the invention is schematically shown in the second drawing.

FIG. 3: the invention provides a structural schematic diagram of a spraying device matched with an anti-collision pier.

FIG. 4: a close-up view of the mounting bar provided by the present invention.

FIG. 5: the structure of the sub-connecting pipe provided by the invention is schematically shown as I.

FIG. 6: the invention provides a second structural schematic diagram of the sub-connecting pipe.

The reference numbers illustrate:

1. a protective housing; 11. a base plate; 12. a back plate; 121. a longitudinal chute; 122. a transverse screw; 13. a side dam;

2. a protective mask body; 21. a top plate; 22. a side plate; 23. mounting a rod; 231. an upper mounting plate; 2311. a transverse chute; 232. a lower mounting plate; 24. a roller;

3. a nozzle;

31. a connecting pipe; 311. a sub-connection pipe; 3111. a first pipe body; 3112. a second tube body; 31121. positioning blocks; 31122. positioning a groove; 31123. an internal thread; 312. a plug;

32. a nozzle;

4. anticollision mound.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present embodiment provides a spraying device, which includes a protective housing 1, a protective cover 2 and a spraying tool, which are vertically disposed. The protective casing 1 is of a box-type structure with an opening at the top and one side, the protective cover body 2 is of a box-type structure with an opening at the bottom, the protective cover body 2 can be sleeved in the protective casing 1 in a vertically sliding mode, and one side of the protective cover body 2 protrudes out of the opening end of the side part of the protective casing 1. The spraying tool comprises a nozzle 3 which is fixed in a protective housing 2.

Specifically, the general protective casing 1 is enclosed by a bottom plate 11, a back plate 12 and two side baffles 13 located at two sides of the back plate 12, and the protective cover 2 is enclosed by a top plate 21 and four side plates 22 at the periphery. The above-mentioned nozzle 3 is fixed to the side plate 22 of the protective hood 2 on the same side as the back plate 12 in order to better paint the side surfaces of the crash piers 4. The width of the lateral plate 22 located on the same side with the side baffle 13 in the protective cover body 2 along the horizontal direction is greater than that of the side baffle 13, so that the side opening end of one side of the protective cover body 2 protruding out of the protective shell 1 is arranged, and the top of the anti-collision pier 4 is buckled during use.

The top opening end of the whole protective shell 1 is sealed by the protective cover body 2, so that a single-sided cavity structure is formed in the protective shell 1, when the protective shell is used, the surface is aligned to the anti-collision pier 4, a closed space can be formed, the paint can be prevented from volatilizing and diffusing after being atomized, and the paint can be prevented from splashing outside by utilizing the side face (specifically, the side baffle 13) of the protective shell 1; further avoiding the pollution of the volatilized and diffused coating to the atmosphere and the harm to the health of spraying workers and surrounding residents; the dissolution damage of the splashed coating to the pavement asphalt is avoided; the loss of the atomized material in field operation or strong wind weather is avoided, so that the coating can be uniformly sprayed on the side surface of the anti-collision pier 4, and the spraying quality cannot be influenced by the strong wind weather; the coating can be saved, and the waste is reduced.

In use, in order to improve the working efficiency, the protective casing 1 is generally fixed on a traveling device, which may be a speed-adjustable truck or other device capable of automatically traveling, and this embodiment is merely an example. Then with spray tube 3 through a tube coupling storage tank, detain protecting casing 1 and the protecting hood body 2 on crashproof mound 4 for the lateral part open end of protecting casing 1 and the laminating of the side surface of crashproof mound 4, there is not the space between the side surface of two side shields 13 and crashproof mound 4 promptly, and the protecting hood body 2 that slides simultaneously makes the bottom open end of the protecting hood body 2 hug closely the top surface of crashproof mound 4.

After the adjustment and installation are finished, the traveling device drives the whole spraying device to travel, and the side surface of the anti-collision pier 4 can be sprayed in the traveling process. By setting the travelling speed of the travelling device, the spraying amount of the coating on each unit area of the anti-collision pier 4 can be ensured to be consistent, so that the concrete of the anti-collision pier 4 can be uniformly absorbed into the coating; utilize running gear can realize incessant operation, spout less because of the more that different constitutions, different operation experiences caused when preventing manual work, and influence the concrete and absorb waterproof and antiseptic's dosage to guarantee the spraying effect, avoid crashproof mound 4 to be corroded, prolong its life, also improved spraying efficiency simultaneously.

From this, the spraying device in this embodiment makes the inside of protecting casing 1 form a single face cavity structure through the cooperation of protecting casing 1 and protecting hood body 2, aims at the open end of this single face cavity structure and hugs closely the side surface of crashproof mound 4 during the use, alright in order to form an inclosed space, can cooperate better with crashproof mound 4 through the upper and lower slip of protecting hood body 2, reduces the space at protecting hood body 2 and crashproof mound 4 top as far as possible. Therefore, can play better safety protection effect at the spraying in-process, prevent volatilizing, diffusion and the splashing of coating in the spraying process, effectively avoided the pollution to atmospheric environment, to operative employee and peripheral resident's health hazard and to bituminous paving or other object dissolve destruction, guaranteed environmental quality and resident's quality of life and healthy, can also avoid the waste of coating simultaneously, resources are saved reduces the energy consumption, improves economic benefits.

It should be noted that the spraying device in this embodiment can be used for spraying the anti-collision pier 4, and can also be used for spraying other occasions where such coatings that are volatile and easily cause health hazards to the environment or workers need to be sprayed, and the spraying device can be buckled on an object to be sprayed, so that a certain protection effect can be achieved during spraying, and the coatings are prevented from being volatilized, diffused, splashed and the like.

In a specific implementation manner, in order to avoid the waste of the paint, the bottom of the protective shell 1 is provided with a material receiving groove. Specifically, the material receiving groove is formed on the bottom plate 11, so that the bottom of the protective shell 1 forms a material receiving box, redundant paint can be collected in the spraying process, and the material receiving box can be recycled subsequently, thereby saving resources.

In practical application, as shown in fig. 1 and fig. 2, a mounting rod 23 is formed at the bottom of the protective cover 2 and extends downward away from the side opening end of the protective housing 1, and a roller 24 is horizontally slidably disposed at the bottom end of the mounting rod 23 toward the side opening end of the protective housing 1. The horizontal sliding direction of the roller 24 is perpendicular to the side opening end of the protective casing 1 (i.e. perpendicular to the plane where the side opening end of the protective casing 1 is located), and the axial direction of the roller 24 is arranged along the vertical direction.

Specifically, the above-mentioned mounting rod 23 is formed by extending downward from the bottom of the side plate 22 away from the side opening end of the protective housing 1, and two mounting rods 23 symmetrically arranged at the bottom of the side plate 22 are preferable for making the structure more stable. Thus, as shown in fig. 1 to 3, after the protective shell 1 and the protective cover 2 are fastened on the anti-collision pier 4, the open end of the side portion of the protective shell 1 is tightly attached to the side surface of the anti-collision pier 4, that is, the two side baffles 13 of the protective shell 1 are tightly attached to the side surface of the anti-collision pier 4, so that the horizontal sliding direction of the roller 24 is perpendicular to the side surface of the anti-collision pier 4, the roller 24 is located on the other side surface of the anti-collision pier 4, and the position of the roller is finely adjusted by the horizontal sliding roller 24, so that the distance between the side baffles 13 and the side surface of the anti-collision pier 4 can be reduced and tightly attached as much as possible, and the coating is prevented from running out of the gap due to the excessively large gap.

In detail, in order to facilitate the installation of the roller 24 and the fine adjustment thereof, as shown in fig. 1, 2 and 4, an upper mounting plate 231 and a lower mounting plate 232 are formed at the bottom end of the mounting rod 23 and extend towards the side opening end of the protective housing 1 at intervals, a horizontal sliding slot 2311 extending in the horizontal direction is formed on the upper mounting plate 231, and the extending direction of the horizontal sliding slot 2311 is perpendicular to the side opening end of the protective housing 1. Roller 24 is embedded between upper mounting plate 231 and lower mounting plate 232, and roller 24 includes the fixed axle and establishes the wheel body in the fixed axle outside through the bearing housing, and the axial of fixed axle sets up along vertical direction. A longitudinal screw is inserted into the transverse sliding groove 2311 and is fixed with the fixed shaft through threads.

When the roller 24 is finely adjusted, the roller 24 horizontally slides to a proper position along the transverse sliding groove 2311, and the fixing shaft and the upper mounting plate 231 can be fastened by screwing the longitudinal screw, so that the device is simple and convenient; meanwhile, the wheel body can normally roll in the advancing process of the spraying device, so that the friction force is reduced.

Further, in order to more effectively prevent the leakage of the paint, a brush plate is fixed to each of both side edges of the protective case 1 near the side opening ends thereof.

Specifically, a brush plate is respectively arranged at the edges of the two side baffles 13, and the brush plate is provided with bristles made of fiber materials, so that the materials are relatively soft. After the position of the roller 24 is finely adjusted, bristles on the brush plate can be extruded to different degrees, so that a gap between the side baffle 13 of the protective shell 1 and the side surface of the anti-collision pier 4 can be ensured to be avoided as much as possible, and the bristles can also play a certain role in blocking paint; meanwhile, in the process that the walking device drives the whole spraying device to move forward, the brush bristles on the brush plate can also brush the paint sprayed on the side surface of the anti-collision pier 4, so that the paint is sprayed more uniformly.

In order to facilitate installation and adjustment of the position of the protective cover 2, as shown in fig. 2 and 3, a longitudinal sliding groove 121 extending in the vertical direction is provided on the side portion of the protective housing 1 facing the opening end of the side portion, a transverse screw 122 is inserted into the longitudinal sliding groove 121, and the transverse screw 122 is screwed with the protective cover 2.

The longitudinal sliding groove 121 is specifically disposed on the back plate 12, and after the protective cover 2 slides up and down to a suitable position, the protective cover 2 and the protective housing 1 can be firmly fixed by screwing the transverse screw 122, so that the operation is simple and convenient. In this way, the position of the protective cover 2 fixed on the protective housing 1 can be controlled by adjusting the locking position of the transverse screw 122, so that the gap between the protective cover 2 and the top of the anti-collision pier 4 is reduced as much as possible when the protective cover 2 is matched with the anti-collision pier 4.

In order to avoid the volatilization of the paint, the height of the side plate 22 of the protective cover 2 and the height of the side baffle 13 of the protective shell 1 are larger than the height of the anti-collision pier 4, so that no gap is generated between the side plate 22 and the side baffle 13 when the height of the protective cover 2 relative to the protective shell 1 is adjusted, and the paint is prevented from leaking from the gap.

Further, for convenience of processing and installation, as shown in fig. 1, the nozzle 3 includes a connecting pipe 31 fixed inside the protective cover 2 and a plurality of nozzles 32 disposed on the connecting pipe 31, a nozzle of each nozzle 32 is disposed toward an opening end of a side portion of the protective housing 1, and an upper end of the connecting pipe 31 penetrates through a top portion of the protective cover 2.

In the specific use process, the spraying tool further comprises a storage tank and a pressure pump, one end of the pressure pump is connected with the storage tank through a pipeline, and the other end of the pressure pump is connected with the upper end of the connecting pipe through a pipeline. When the paint spraying device is used, the pressure pump and the material storage tank are directly placed on the walking device, and the paint is sprayed by utilizing the pumping action of the pressure pump.

In order to more be convenient for retrieve the coating of collecting in the material recess, whole spraying device still includes the suction pump, and the one end of this suction pump is linked together through pipeline and connecing the material recess, and the other end of suction pump passes through the pipeline to be connected with foretell storage tank, through the suction effect of suction pump, can uninterruptedly with will spill to connect the material of material recess to inhale back to the storage tank in, the reutilization of being convenient for.

In order to adjust the length of the connecting pipe 31 and the number of the nozzles 32 according to the height of the anti-collision pier 4, so that the spraying can be more uniform and the condition of missing spraying can be avoided, as shown in fig. 1, the length direction of the connecting pipe 31 extends along the vertical direction, the connecting pipe 31 comprises a plurality of sub-connecting pipes 311 which can be detachably connected, and each sub-connecting pipe 311 is provided with one nozzle 32.

In this way, the length of the connecting pipe 31 and the number of nozzles 32 can be adjusted by increasing or decreasing the number of sub-connecting pipes 311 to be better fitted with the crash block 4.

In detail, in order to facilitate the connection and disconnection between the sub connection pipes 311, as shown in fig. 5 and 6, each sub connection pipe 311 includes a first pipe body 3111 and a second pipe body 3112 fixed up and down, and the nozzle 32 is provided on the second pipe body 3112. The outer diameter of the first pipe 3111 is the same as the inner diameter of the second pipe 3112, and the first pipe 3111 located below of the two adjacent sub-connection pipes 311 can be inserted into the second pipe 3112 located above.

In practical applications, in order to ensure that the directions of the nozzles 32 on the sub-connection pipes 311 are consistent, and to facilitate spraying, as shown in fig. 5 and 6, a positioning block 31121 is disposed at the upper end of the second pipe 3112 and closely attached to the outer wall of the first pipe 3111, a positioning groove 31122 is disposed downward at the lower end of the second pipe 3112, and the positioning block 31121 located below in two adjacent sub-connection pipes 311 can be inserted into the positioning groove 31122 located above.

Wherein, generally set up a locating piece 31121 in the upper end of second body 3112 can, through the cooperation of locating piece 31121 and constant head tank 31122, can more conveniently fix a position the mounted position when connecting two sub-connecting pipes 311, guarantee that each nozzle 32 direction is unanimous.

Further, in order to avoid the bottom leakage of the connecting pipe 31, as shown in fig. 5 and 6, a bottom plug 312 is disposed at the bottom end of the sub-connecting pipe 311 at the bottom, so as to plug the bottom of the connecting pipe 31, thereby facilitating the spraying of the anti-collision pier 4.

For more convenient connection, an internal thread 31123 is provided on the inner wall of the lower end of each second tube 3112 above the positioning groove 31122, and an external thread is provided on the outer wall of the stopper 312 to be fixed to the internal thread 31123.

Thus, after the sub-connection pipe 311 is fixed to the upper plug 312, the positioning groove 31122 is located below the internal thread 31123, which does not cause leakage at the bottom. Meanwhile, when the number of the sub-connection pipes 311 is increased or decreased according to the height of the anti-collision pier 4, the plugs 312 can be disassembled and then fixed on the sub-connection pipes 311 which are positioned at the bottommost part at present, so that the bottom of the whole connection pipe 31 is plugged, the two adjacent sub-connection pipes 311 are mutually connected and cannot be influenced by the internal threads 31123, and the disassembly and assembly are more convenient.

The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.