A portable pull spray device for hard hats

Abstract

The present invention relates to the field of dustproof protective gear, and discloses a portable pull spray device for a safety helmet, comprising a water supply mechanism and a spray mechanism detachably mounted on the brim of the safety helmet, wherein the water supply mechanism comprises a shell component, a water supply component and a pulling component, wherein the water supply component is connected in the shell component, the pulling component passes through the shell component and is connected to the water supply component, and the shell component is detachably connected to the safety helmet; the spray mechanism comprises a water pipe detachably rotatably connected to the lower end of the brim of the front side of the safety helmet, the water pipe is connected to the water supply component, and a plurality of spray assemblies are distributed along the length direction of the water pipe. The present invention can solve the problem that workers on existing construction sites cannot effectively prevent dust for a long time by using masks to prevent dust.

Description

Technical Field

[0001] The invention relates to the field of dustproof protective gear, in particular to a portable pull spray device for a safety helmet. Background Art

[0002] At present, there is inevitable dust during the construction process at the construction site, and workers work at the construction site for a long time. As the amount of dust inhaled increases, the dust has a great impact on human health. If excessive dust is inhaled, it is easy to cause silicosis, etc. At present, the main measure for dust prevention is that operators wear dust masks. Conventional masks filter dust particles through filter cloth. Since there is only one layer of protection, the filtering effect of the mask is affected by the amount of dust accumulated on the filter cloth. After long-term use, dust attached to the mask accumulates, and the filtering effect is reduced, resulting in poor respiration of the mask, making it difficult to use for a long time, and the dust prevention effect is limited. Frequent replacement of masks has a high cost of use, and it is difficult to effectively meet the dust prevention needs of construction site personnel. Summary of the invention

[0003] The present invention is intended to provide a portable pull spray device for a safety helmet, so as to solve the problem that existing construction site workers use masks to prevent dust, but cannot effectively prevent dust for a long time.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a portable pull-spray device for a safety helmet, comprising a water supply mechanism and a spray mechanism detachably mounted on the brim of the safety helmet, the water supply mechanism comprising an outer shell component, a water supply component and a pulling component, the water supply component is connected in the outer shell component, the pulling component passes through the outer shell component and is connected to the water supply component, and the outer shell component is detachably connected to the safety helmet; the spray mechanism comprises a water pipe detachably rotatably connected to the lower end of the brim on the front side of the safety helmet, the water pipe is connected to the water supply component, and a plurality of spray assemblies are distributed on the water pipe along the length direction.

[0005] The principle and advantages of this scheme are: the water supply mechanism supplies water, the spray mechanism sprays water in atomized form, the outer shell component serves as the outer shell of the water supply mechanism, provides protection for the internal structure, and is connected to the safety helmet. The detachable connection method is convenient for replacement and maintenance. The pulling component serves as the operating end to drive the water supply component to supply water to the spray mechanism under the operation of the wearer. The detachable spray mechanism is easy to adjust and maintain. The spray assembly serves as the atomization execution structure to spray water in atomized form. The rotating water guide pipe serves as the water supply channel and supporting structure of the spray assembly, and can rotate and adjust the spray angle and direction to obtain a better dust prevention effect. In actual application, the wearer of the safety helmet supplies water to the spray mechanism by operating the water supply mechanism according to the dust situation at the construction site and his own breathing needs. The spray mechanism sprays water in front of the wearer's face after atomizing the water, increasing the air humidity, moistening and settling the dust in the space in front of the wearer, and improving the air quality. In this way, dust reduction can be carried out in a small range of air at any time according to one's own needs. As long as there is enough water source, dust prevention operation can be effectively carried out for a long time, providing a better dust prevention effect.

[0006] Preferably, as an improvement, the spray assembly includes a mounting seat connected to the water pipe, the mounting seat is cylindrical, a threaded pipe connected to the water pipe is integrally formed in the middle of the mounting seat, a nozzle housing is threadedly connected to the threaded pipe, and the nozzle is installed at the end of the nozzle housing. The nozzle housing provides mounting support for the nozzle, the mounting seat provides mounting support for the nozzle housing, and the mounting seat is connected to the water pipe to supply water to the nozzle. The threaded connection ensures stable connection and good sealing, ensuring effective formation of the spray.

[0007] Preferably, as an improvement, the lower section of the nozzle housing is cylindrical and has threads and spiral grooves on the inner wall, a positioning cylinder is provided in the middle of the upper section of the nozzle housing, the spiral groove extends to the top of the positioning cylinder, the nozzle sleeve is inserted on the positioning cylinder, a water guide groove is provided on the inner wall of the nozzle, a spray hole is provided in the middle of the top of the nozzle, and the water guide groove is connected to the spray hole. The positioning cylinder provides convenient installation and positioning for the nozzle, and the cross-sectional areas of the spiral groove of the nozzle housing, the water guide groove of the nozzle, and the spray hole of the nozzle are reduced successively. The water flow from the water guide pipe to the spray is ejected, and the cross-sectional area of ​​the water flow path is reduced three times, namely, the spiral groove of the nozzle housing, the water guide groove of the nozzle, and the spray hole of the nozzle, thereby amplifying the effect of the injection pressure, better completing the water flow conversion to form a spray, and the sprayed water mist is more uniform, and the dust prevention effect is better.

[0008] Preferably, as an improvement, a wind power component is provided in the mounting seat on the outside of the threaded tube, and the wind power component includes a cylindrical body mounted on the outside of the threaded tube, and wind blades are evenly distributed circumferentially on the end of the body close to the nozzle, and the end of the body away from the nozzle is extended circumferentially to form a limit plate, and an annular groove is provided on the inner wall of the mounting seat, and the limit plate is inserted into the annular groove, and the wind power component is connected to a drive assembly. The nozzle shell passes through the body of the wind power component and is connected to the threaded tube, so that the nozzle shell plays the role of the rotating shaft of the wind power component body. The limit plate and the annular groove cooperate to limit the rotation of the body. The driving assembly is used to drive the wind power component to rotate, and then the wind blades generate airflow to blow the water mist sprayed by the nozzle toward the front of the wearer of the safety helmet. The wind blades are located on the rear side of the nozzle and are coaxially distributed, so that the formed wind pushes the water mist forward in a cone shape, more comprehensively reducing and blowing away the dust in the front range of the face, providing better dust prevention effect, and preventing water mist from adhering to the wearer's face to affect the field of vision and facial feeling. Such a structure is also more compact, occupies less space, and has less impact on the wearing of the safety helmet.

[0009] Preferably, as an improvement, the driving assembly includes a gear ring arranged circumferentially on the body between the limit plate and the wind blade, a channel opened on the side wall of the mounting seat, a second rack inserted in the channel and meshing with the gear ring, one end of the second rack is connected to a rope, and a fourth spring is connected between the other end and the water pipe. In this way, the second rack is pulled by the rope, and the body is driven to rotate in situ, so that the wind blade can be effectively rotated. The rope is shared with the rope connected to the first rack in the pulling component, so that wind can be formed while supplying water, and then wind is synchronously formed in the process of spraying water mist to blow the water mist forward. The fourth spring is used to assist the second rack in resetting. Multiple wind components can achieve the effect of one second rack driving all wind components at the same time by opening symmetrical channels on the body.

[0010] Preferably, as an improvement, the water supply component includes a water outlet pipe, the water outlet end of the water outlet pipe is connected to the water guide pipe by a hose, the water inlet end of the water outlet pipe is connected to a push valve, the push valve is connected to a water source, the water outlet pipe is connected to the pulling component, the water outlet pipe triggers the push valve under the drive of the pulling component, and a first spring is connected between the water outlet pipe and the housing component. The water outlet pipe serves as a water flow channel and also cooperates with the push valve as a part of the water flow channel switch, and the first spring assists the water outlet pipe to reset.

[0011] Preferably, as an improvement, the shell component includes a cylindrical shell, one end of the shell is threadedly connected with a nut, and the other end is sleeved with a cap, the reset spring is connected between the water outlet pipe and the shell, and the pulling component is connected to the cap. By opening a hole on the brim of the safety helmet, the shell is passed through and fixed by the nut, which is easy to operate, has little structural change to the safety helmet, occupies little space, and does not affect the wearer's field of vision. The cap closes one end of the shell and provides a support carrier for the pulling component to be installed and connected.

[0012] Preferably, as an improvement, the pulling component includes a rotating shaft rotatably connected to the inner side of the cap, a driving gear is fixed in the middle of the rotating shaft, and driven gears are coaxially arranged on the left and right sides of the driving gear. A through hole is provided on the side wall of the cap, and a first rack is passed through the through hole. The first rack meshes with the driving gear, and the end of the first rack located on the outer side of the cap is connected to a rope, and the outlet pipe is U-shaped, and a third rack is provided on the outer wall of the outlet pipe, and the driven gear meshes with the third rack. The first rack is moved by pulling the rope, and under the drive of the first rack, the driving gear rotates to drive the rotating shaft and the driven gear to rotate, and the driven gear pushes the outlet pipe to move through the third rack, thereby connecting the press valve to supply water. The U-shaped outlet pipe can save space on the one hand, and two driven gears can be used on the other hand to ensure the driving stability of the outlet pipe.

[0013] Preferably, as an improvement, circular blocking plates are provided on both the left and right sides of the driving gear, the circular blocking plates are arranged close to the driving gear, and the diameter of the circular blocking plates is larger than the diameter of the driving gear. Preferably, the circular blocking plates are used to ensure that the first rack stably drives the driving gear, prevent the first rack from being out of meshing with the driving gear, and ensure stable and reliable operation of the pulling component.

[0014] Preferably, as an improvement, the push valve includes a shell, in which a plug, a rubber ring, a second spring, a water-blocking plug, a water-guiding plug, a third spring, and a ball are arranged in sequence, the water inlet end of the water outlet pipe is inserted into the shell, the plug, the rubber ring, the second spring, and the water-blocking plug are all sleeved on the water outlet pipe, a limiting step for limiting the water-blocking plug is provided in the shell, an annular plug plate is provided at the bottom end of the water-blocking plug, the upper part of the water-guiding plug is a cylinder with a groove on the surface, and the lower part is a circular plate, an annular slot is opened on the circular plate, a push rod is coaxially provided at the bottom of the circular plate, and the push rod passes through the third spring arrangement.

[0015] The plug is fixed with the end of the shell by clamping. The plug and rubber ring play the role of water blocking. The water outlet pipe plays the role of water guiding and also serves as an element in the pulling process. The second spring plays the role of providing pressure and helping the water blocking plug to slide. The water blocking plug fits with the water guiding plug to prevent water backflow. The water flow is guided into the water outlet pipe through the small grooves and slots on the water guiding plug, which can reduce the air entering the water outlet pipe and improve the spray effect. The circular plate of the water guiding plug can be pressed tightly against the inner wall of the shell during the action to prevent water backflow. The third spring provides the power to return to the original position after pulling and the power to squeeze the water. The third spring also contacts the plugging ball, pressing the plugging ball against the water inlet end of the shell, blocking the connection between the water source and the press valve when pulling, preventing water backflow, and ensuring sufficient water flow entering the water outlet pipe. An exhaust hole is opened on the shell, which can exhaust the air in the shell during the pulling process, and then use the pressure difference to make the water flow enter from the water source.

[0016] The present invention has the following advantages:

[0017] 1. The power is provided by pulling the rope, and the length of the rope can be freely adjusted, so that the user can drive the device in the most comfortable way.

[0018] 2. A wind power component is installed in the spray part, and is driven by gears and racks. The wind power component is driven while the rope is pulled to drive the core water supply mechanism, forming wind-blown water mist, which covers a wider area and reduces the impact on users.

[0019] 3. The entire spray device is connected to the safety helmet by bolt connection, which is easy to install and disassemble, simple and convenient.

[0020] 4. The whole device is made of light material and compact in size, and has little effect on the weight of the helmet.

[0021] 5. The water pipe and the safety helmet are connected in a detachable and rotatable manner, which can realize the forward and backward rotation of the spray mechanism and automatically adjust the distance between the spray and the face. It can not only block dust, but also play a role in cooling down in hot weather.

[0022] 6. The entire device is installed on the brim of the helmet and has little effect on the safety performance of the helmet.

[0023] 7. In the process of forming the spray of water flow, the structure of the device is repeatedly used to reduce the cross-sectional area of ​​the water flow, enhance the effect of spray formation, and more effectively block dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an exploded view of the embodiment of the present invention after being assembled on a safety helmet.

[0025] Figure 2 It is a cross-sectional view of the water supply mechanism in the embodiment of the present invention.

[0026] Figure 3 It is a front view of the water outlet pipe in the embodiment of the present invention.

[0027] Figure 4 2 is a cross-sectional view of a housing in an embodiment of the present invention.

[0028] Figure 5 4 is a cross-sectional view of the water blocking plug in an embodiment of the present invention.

[0029] Figure 6 1 and 2 are front and top views of the water guide plug in the embodiment of the present invention.

[0030] Figure 7 It is a front view of the pulling component in the embodiment of the present invention.

[0031] Figure 8 It is an axonometric view of the card holder in the embodiment of the present invention.

[0032] Fig. 9 4 is a cross-sectional view of a nozzle housing in an embodiment of the present invention.

[0033] Fig.10 4 is a cross-sectional view of a nozzle in an embodiment of the present invention.

[0034] Fig.11 2 is a cross-sectional view of a cap in an embodiment of the present invention.

[0035] Fig.12 4 is a cross-sectional view of a water pipe in an embodiment of the present invention.

[0036] Fig.13 It is a front view of the wind force component in the embodiment of the present invention. DETAILED DESCRIPTION

[0037] The following is further described in detail through specific implementation methods:

[0038] The reference numerals in the drawings of the specification include: safety helmet 1, connecting hole 2, rack channel 3, first spring 4, water supply component 5, water outlet pipe 51, third rack 511, shell 52, exhaust hole 521, plug 53, rubber ring 54, water blocking plug 55, plug plate 551, second spring 56, water guide plug 57, circular plate 571, drainage groove 572, top rod 573, slot 574, third spring 58, blocking ball 59, pulling component 6, rotating shaft 61, active Gear 62, driven gear 63, circular blocking piece 64, nut 7, housing 8, cap 9, through hole 91, shaft seat 92, holder 11, fourth spring 12, nozzle housing 13, positioning cylinder 131, nozzle 14, water guide groove 141, spray hole 142, wind force component 15, main body 151, wind blade 152, limit plate 153, gear ring 154, water guide pipe 16, mounting seat 161, threaded pipe 162, drive channel 163, protective cover 164.

[0039] The embodiment is basically as shown in the attached Figure 1 As shown: A portable pull-spray device for a safety helmet, comprising a water supply mechanism and a spray mechanism detachably mounted on the brim of the safety helmet 1, wherein the water supply mechanism comprises an outer shell 8 component, a water supply component 5 and a pulling component 6, wherein the water supply component 5 is connected to the outer shell 8 component, the pulling component 6 passes through the outer shell 8 component and is connected to the water supply component 5, and the outer shell 8 component is detachably connected to the safety helmet 1.

[0040] Combination Figure 2 As shown, the shell 8 component includes a cylindrical shell 8, the outer wall of the shell 8 is provided with an annular positioning platform, one end of the shell 8 is threadedly connected with a nut 7, and the other end is sleeved with a cap 9, and a connecting hole 2 and a rack channel 3 are made at the right front brim of the safety helmet 1. The shell 8 is passed through the connecting hole 2 and connected to the nut 7 to form a reliable connection between the spray device and the safety helmet 1. A baffle is provided inside the shell 8, and two through holes 91 are arranged side by side on the baffle. The baffle outside one of the through holes 91 is stretched axially along the shell 8 to form a mounting groove. Fig.11 As shown, a through hole 91 is provided on the side wall of the cap 9, and a symmetrical shaft seat 92 is provided inside the cap 9. The pulling member 6 is connected to the cap 9 and combined with Figure 7 As shown, the pulling component 6 includes a rotating shaft 61 rotatably connected to the inner side of the cap 9, the two ends of the rotating shaft 61 are inserted into the shaft seat 92, a driving gear 62 is fixed in the middle of the rotating shaft 61, and a driven gear 63 is coaxially arranged on the left and right sides of the driving gear 62, a first rack is passed through the through hole 91 on the cap 9, the first rack is meshed with the driving gear 62, and the end of the first rack located on the outer side of the cap 9 is connected to the rope. Circular blocking pieces 64 are arranged on the left and right sides of the driving gear 62, and the circular blocking pieces 64 are arranged close to the driving gear 62, and the diameter of the circular blocking pieces 64 is larger than the diameter of the driving gear 62.

[0041] Combination Figure 2 , Figure 3 As shown, the water supply component 5 includes a water outlet pipe 51, which is a U-shaped component with water inlet at one end and water outlet at the other end. The water outlet end of the water outlet pipe 51 is connected to the water conduit 16 by a hose, and the water inlet end of the water outlet pipe 51 is connected to a press valve, which is connected to a water source. The water outlet pipe 51 is connected to the pulling component 6, and the water inlet section and the water outlet section of the water outlet pipe 51 are provided with a third rack 511 on one side of the outer wall near the U-shaped bottom, and the driven gear 63 of the pulling component 6 is meshed with the third rack 511. The water outlet pipe 51 triggers the press valve under the drive of the pulling component 6, and a first spring 4 is connected between the water outlet pipe 51 and the housing 8.

[0042] like Figure 2As shown, the push valve includes a tubular housing 52, in which a plug 53, a rubber ring 54, a second spring 56, a water blocking plug 55, a water guiding plug 57, a third spring 58, and a plug ball 59 are arranged in sequence. The plug 53 is annular and is embedded in the inner side of one end of the housing 52. Figure 5 As shown, the water blocking plug 55 is cylindrical, and concentric annular grooves are provided on both the upper and lower end surfaces of the water blocking plug 55. The outer portion of the annular groove forms an annular plug plate 551, and the inner wall of the water blocking plug 55 is provided with a step. Figure 6 As shown, the upper part of the water guide plug 57 is a cylinder with three drainage grooves 572 on the surface, and the lower part is a circular plate 571. The diameter of the circular plate 571 is smaller than the outer diameter of the annular groove. The circular plate 571 is provided with an annular slot 574, and a top rod 573 is coaxially provided at the bottom of the circular plate 571. Figure 4 As shown, a limiting step for limiting the water blocking plug 55 is provided in the housing 52, the inner diameter of the housing 52 on the side of the limiting step away from the plug head 53 is smaller than the diameter of the circular plate 571, and the inner wall of the end of the housing 52 away from the plug head 53 is in the shape of a tapered hole. The water inlet end of the water outlet pipe 51 is inserted into the housing 52, the plug head 53, the rubber ring 54, the second spring 56, and the water blocking plug 55 are all sleeved on the water outlet pipe 51, and a step is provided on the outer wall of the water inlet end of the water outlet pipe 51. One end of the second spring 56 presses on the step of the water inlet end of the water outlet pipe 51, and the other end presses on the step of the inner wall of the water blocking plug 55. The upper part of the water guide plug 57 is inserted into the water inlet end of the water outlet pipe 51. When not driven, the plug plate 551 at the lower end of the water blocking plug 55 is inserted into the slot 574 on the circular plate 571 of the water guide plug 57. The third spring 58 is sleeved on the top rod 573 , and the third spring 58 presses the blocking ball 59 against the tapered hole of the housing 52 to block the water flow.

[0043] like Figure 1 As shown, the spray mechanism includes a water pipe 16 detachably connected to the lower end of the brim of the front side of the safety helmet 1. Specifically, four card seats 11 are bonded under the brim of the front side of the safety helmet 1. Figure 8 As shown, the card base 11 is provided with a circular opening slot, and the water pipe 16 is inserted into the card base 11 through the opening slot and can be rotated and adjusted in the opening slot. The water pipe 16 is connected to the water supply component 5 through a hose, and the water supply component 5 is connected to the water supply component 5 through a hose. Fig.12 As shown, four spray assemblies are distributed along the length of the water pipe 16. The spray assembly includes a mounting seat 161 integrally formed on the water pipe 16. The mounting seat 161 is cylindrical. A threaded pipe 162 connected to the water pipe 16 is integrally formed in the middle of the mounting seat 161. The nozzle housing 13 is threadedly connected to the threaded pipe 162. The nozzle 14 is installed at the end of the nozzle housing 13. Fig. 9 As shown, the lower section of the nozzle housing 13 is cylindrical and has threads and spiral grooves on the inner wall. A positioning cylinder 131 is provided in the middle of the upper section of the nozzle housing 13. The spiral groove extends to the top of the positioning cylinder 131. The nozzle 14 is inserted on the positioning cylinder 131. Fig.10 As shown, a water guide groove 141 is provided on the inner wall of the nozzle 14, and a spray hole 142 is provided in the middle of the top of the nozzle 14. The water guide groove 141 is connected to the spray hole 142, and the cross-sectional areas of the spiral groove of the nozzle housing 13, the water guide groove 141 of the nozzle 14 and the spray hole 142 of the nozzle 14 decrease successively.

[0044] The wind force component 15 is arranged in the mounting seat 161 outside the threaded tube 162. Fig.13 As shown, the wind force component 15 includes a cylindrical body 151 which is sleeved on the outside of the threaded tube 162, and the end of the body 151 close to the nozzle 14 is circumferentially evenly distributed with wind blades 152, and the end of the body 151 away from the nozzle 14 is circumferentially extended to form a limit plate 153, and the inner wall of the mounting seat 161 is provided with an annular groove, and the limit plate 153 is inserted into the annular groove, and the wind force component 15 is connected to a driving assembly.

[0045] A protective cover 164 is formed integrally at the end of the water pipe 16, and a hook is formed on the inner wall of the protective cover 164, and a fourth spring 12 is hung on the hook, and the fourth spring 12 is a spring with hooks bent at both ends. The driving assembly includes a gear ring 154 arranged circumferentially on the body 151 between the limit plate 153 and the wind blade 152, a driving channel 163 symmetrically opened on the side wall of the mounting seat 161, and a second rack penetrating the driving channel 163 and meshing with the gear ring 154. One end of the second rack is connected to a rope, and the other end is hung with the fourth spring 12 through a hole. The second rack and the first rack are connected to the same rope, so that the water supply and spraying process can be controlled simultaneously through one rope, and the operation is more convenient.

[0046] The specific implementation process is as follows: a connection hole 2 and a rack channel 3 are processed at the right front brim of the safety helmet 1, and the outer shell 8 is fixed with a nut 7 after passing through the connection hole 2. The nut 7 and the positioning platform are clamped on the upper and lower sides of the safety helmet 1. When the wearer of the safety helmet 1 is in use, he pulls the rope downward, and the rope pulls the first rack. The first rack drives the active gear 62 to rotate, and the active gear 62 drives the rotating shaft 61 and the driven gear 63 to rotate. The driven gear 63 drives the water outlet pipe 51 to move downward, squeezing the first spring 4. At this time, the third spring 58 shrinks, the space between the water outlet pipe 51 and the blocking ball 59 is compressed, and the air is discharged from the exhaust hole 521. After the water outlet pipe 51 moves downward to a certain extent, the second spring 56 shrinks, and the water blocking plug 55 slides up and detaches from the water guide plug 57, exposing the groove on the upper part of the water guide plug 57. The water between the water outlet pipe 51 and the blocking ball 59 is squeezed through the groove on the upper part of the water guide plug 57 and enters the water outlet pipe 51. After the rope is released, the first spring 4 rebounds, and the second spring 56 and the third spring 58 restore their deformation, so that the water blocking plug 55 slides downward and fits with the water guiding plug 57. The plug plate 551 at the bottom of the water blocking plug 55 is inserted into the slot 574 on the circular plate 571 of the water guiding plug 57 to prevent water from flowing back. At the same time, the water outlet pipe 51 moves upward, driving the driven gear 63 to rotate, so that each part returns to the state before being pulled down. During the rebound process, the air between the water outlet pipe 51 and the blocking ball 59 is discharged, and the air in the water source is at atmospheric pressure. Due to the pressure difference, the blocking ball 59 will be lifted upward, and the water will flow from the water source into the water storage part between the water outlet pipe 51 and the blocking ball 59, and a small amount of air will also enter from the exhaust hole 521.

[0047] After the water flows through the outlet pipe 51, it enters the water conduit 16 through the hose, and then enters the nozzle housing 13 and the nozzle 14 from the threaded pipe 162 of the mounting seat 161. The water flows through the spiral groove of the nozzle housing 13, the water conduit 141 of the nozzle 14 and the spray hole 142 of the nozzle 14, and the cross-sectional area of ​​the water flow path is reduced three times, thereby forming a spray. At the same time, in the process of continuously pulling the rope, the second rack is driven to move, and the second rack drives the wind force component 15 to rotate. The wind blades 152 rotate to generate wind force to accelerate the spray forward, enhance the spray and reduce the impact of the spray on the user, effectively prevent dust and water mist from adhering to the wearer's face, and prevent dust from being inhaled by the wearer. Dust prevention can be carried out in time according to needs, and the dust prevention effect is good and lasts for a long time.

[0048] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A portable pull spray device for a safety helmet, characterized in that: The invention comprises a water supply mechanism and a spray mechanism which can be detachably mounted on the brim of the safety helmet. The water supply mechanism comprises a shell component, a water supply component and a pulling component. The water supply component is connected to the shell component, the pulling component passes through the shell component and is connected to the water supply component, and the shell component is detachably connected to the safety helmet; the spray mechanism comprises a water pipe which is detachably and rotatably connected to the lower end of the brim of the front side of the safety helmet, the water pipe is connected to the water supply component, and a plurality of spray assemblies are distributed on the water pipe along the length direction; the spray assembly comprises a mounting seat connected to the water pipe, the mounting seat is cylindrical, a threaded pipe connected to the water pipe is integrally formed in the middle of the mounting seat, a nozzle shell is threadedly connected to the threaded pipe, and a nozzle is mounted at the end of the nozzle shell; the lower section of the nozzle shell is cylindrical and has a threaded inner wall. The nozzle has a plurality of grooves and spiral grooves, a positioning cylinder is provided in the middle of the upper section of the nozzle shell, the spiral groove extends to the top of the positioning cylinder, the nozzle sleeve is inserted on the positioning cylinder, a water guide groove is provided on the inner wall of the nozzle, a spray hole is provided in the middle of the top of the nozzle, and the water guide groove is connected with the spray hole; a wind force component is provided in the mounting seat outside the threaded tube, the wind force component includes a cylindrical body sleeved on the outside of the threaded tube, the end of the body close to the nozzle is circumferentially evenly distributed with wind blades, the end of the body away from the nozzle is circumferentially extended to form a limit plate, an annular groove is provided on the inner wall of the mounting seat, the limit plate is inserted into the annular groove, and the wind force component is connected with a driving component; the driving component includes a gear ring arranged circumferentially on the body between the limit plate and the wind blade, a channel opened on the side wall of the mounting seat, and a gear penetrating in the channel and connected to the wind blade. A second rack meshing with a gear ring, one end of the second rack is connected to a rope, and the other end is connected to the water pipe by a fourth spring; the water supply component includes a water outlet pipe, the water outlet end of the water outlet pipe is connected to the water pipe by a hose, the water inlet end of the water outlet pipe is connected to a press valve, the press valve is connected to a water source, the water outlet pipe is connected to the pulling component, the water outlet pipe triggers the press valve under the drive of the pulling component, and a first spring is connected between the water outlet pipe and the outer shell component; the outer shell component includes a cylindrical outer shell, one end of the outer shell is threadedly connected to a nut, and the other end is sleeved with a cap, the first spring is connected between the water outlet pipe and the outer shell, and the pulling component is connected to the cap; the pulling component includes a rotating shaft rotatably connected to the inner side of the cap, a driving gear is fixed in the middle of the rotating shaft, and the driving gear A driven gear is coaxially arranged on the left and right sides of the wheel, a through hole is arranged on the side wall of the cap, a first rack is passed through the through hole, the first rack is meshed with the driving gear, the end of the first rack located on the outer side of the cap is connected with a rope, and the second rack is connected with the first rack by the same rope, the water outlet pipe is U-shaped, a third rack is arranged on the outer wall of the water outlet pipe, and the driven gear is meshed with the third rack; a step is arranged on the outer wall of the water inlet end of the water outlet pipe, one end of the second spring presses on the step at the water inlet end of the water outlet pipe, and the other end presses on the step on the inner wall of the water blocking plug, the upper part of the water guide plug is inserted into the water inlet end of the water outlet pipe, and when not driven, the plug plate at the lower end of the water blocking plug is inserted into the slot on the circular plate of the water guide plug, the third spring is sleeved on the top rod, and the third spring presses the blocking ball against the tapered hole of the shell to block the water flow;The push valve includes a shell, in which a plug head, a rubber ring, a second spring, a water blocking plug, a water guide plug, a third spring, and a ball are arranged in sequence. The water inlet end of the outlet pipe is inserted into the shell, and the plug head, the rubber ring, the second spring, and the water blocking plug are all sleeved on the outlet pipe. A limiting step for limiting the water blocking plug is arranged in the shell, and a ring-shaped plug plate is arranged at the bottom of the water blocking plug. The upper part of the water guide plug is a cylinder with a groove on the surface, and the lower part is a circular plate. A ring-shaped slot is opened on the circular plate, and the slot is connected to the groove. A push rod is coaxially arranged at the bottom of the circular plate, and the push rod passes through the third spring arrangement. ; 2. A portable pull spray device for a safety helmet according to claim 1, characterized in that: Circular blocking pieces are arranged on the left and right sides of the driving gear, and the circular blocking pieces are arranged close to the driving gear, and the diameter of the circular blocking pieces is greater than the diameter of the driving gear.

Images