CN215400426U - Spray gun head - Google Patents

Abstract

The utility model discloses a spray gun head, which comprises a gun body, wherein an air compression assembly, a suction channel and a liquid spraying channel are arranged on the gun body, the air compression assembly comprises a pressure cavity and a piston arranged in the pressure cavity, the suction channel is respectively communicated with the pressure cavity and the liquid spraying channel, a head cap is arranged on the gun body, and a shunting structure is arranged between the gun body and the head cap; a first opening and closing structure is arranged in the liquid spraying channel and comprises a first opening and closing body and a first elastic piece, and a gap is reserved between the first opening and closing body and the inner wall of the liquid spraying channel; the suction channel is internally provided with a second opening and closing structure, the second opening and closing structure comprises a second opening and closing body and an elastic sealing element which are connected, the second opening and closing body is provided with a liquid channel with a liquid through hole, and a liquid through cavity communicated with the air inlet liquid inlet hole is formed between the elastic sealing element and the second opening and closing body. The first elastic piece is arranged, enough pressure is applied to open the first opening and closing port, and the elastic sealing piece can be quickly reset under the condition of no external force after being jacked open by liquid.

Description

Spray gun head

Technical Field

The utility model relates to the technical field of liquid pressure pumps, in particular to a spray gun head.

Background

The application of hydraulic pump in daily life is very extensive, like bottled liquid articles such as greasy dirt cleaning solution, shampoo, cosmetics articles for use perfume, insect repellant of for kitchen use, all can use the hydraulic pump technique, and the hydraulic pump technique is more convenient, high-efficient in comparison in traditional uncork mode, and output is great moreover. The spray gun head is a common liquid pressure pump tool, needs to be matched with a liquid container for use, and generally has a trigger, a cavity, a piston rod, a spray head and other structures. The working principle is that the internal pressure of the liquid container is increased by utilizing the internal pressure of the piston and compressing the space, so that the liquid is sprayed out of the spray head.

The existing spray gun head is generally provided with an elastic sealing bowl on a liquid channel, and the liquid flow passing through the elastic sealing bowl is inconsistent due to different holding forces of pressing a trigger, so that the liquid spraying amount is not uniform.

SUMMERY OF THE UTILITY MODEL

In view of the above analysis, the present invention proposes a spray gun head that solves the deficiencies of the prior art.

The utility model is mainly realized by the following technical scheme:

the utility model provides a spray gun head which comprises a gun body, wherein an air compression assembly, a suction channel and a liquid spraying channel are arranged on the gun body, the air compression assembly comprises a pressure cavity and a piston, an air inlet liquid inlet hole communicated with the suction channel is formed in the pressure cavity, the piston is in sliding seal fit with the pressure cavity, the suction channel is communicated with the liquid spraying channel, a liquid inlet hole connected with a liquid storage bottle is formed in one end of the suction channel, a liquid outlet hole is formed in the other end of the liquid spraying channel, a head cap is arranged on the gun body, a flow dividing structure used for converting liquid into spray is arranged between the gun body and the head cap, a spray hole movably connected with the flow dividing structure is formed in the head cap, and the flow dividing structure is communicated with the liquid outlet hole.

The liquid spraying device is characterized in that a first opening and closing structure used for opening or closing the liquid spraying channel is arranged in the liquid spraying channel, the first opening and closing structure comprises a first opening and closing body and a first elastic piece which are connected, a limiting structure with a first opening and closing opening is arranged in the liquid spraying channel, the first elastic piece is arranged on the liquid spraying channel in a sliding mode, the first opening and closing body can telescopically open the first opening and closing opening or is arranged in a sealing mode with the first opening and closing opening, and a gap is reserved between the first opening and closing body and the inner wall of the liquid spraying channel.

The suction channel is internally provided with a second opening and closing structure used for opening or closing the suction channel, the second opening and closing structure comprises a second opening and closing body and an elastic sealing piece which are connected, the second opening and closing body and the elastic sealing piece are both positioned below the air inlet liquid inlet hole, the second opening and closing body is arranged in the suction channel in a sealing mode, the second opening and closing body is provided with a liquid channel communicated with the liquid storage bottle, the liquid channel is provided with a liquid through hole, the elastic sealing piece is arranged in an elastic sealing mode with the inner wall of the suction channel, and a liquid through cavity communicated with the liquid through hole is formed among the elastic sealing piece, the second opening and closing body and the inner wall of the suction channel.

Furthermore, the gun body is hinged with a pressing handle, and a sliding structure is arranged between the pressing handle and the piston.

Preferably, the sliding structure is a sliding hole and a limiting shaft which are in sliding connection in a matched mode, or a sliding groove and a limiting bump which are in sliding arrangement in a matched mode.

Further, be equipped with the deflector on the rifle body, it is equipped with the second elastic component to press between handle and the deflector, the second elastic component includes first elasticity portion, the one end of first elasticity portion is equipped with first joint portion, first joint portion with press the handle joint, the other end and the deflector cooperation of first elasticity portion slide and lean on.

Preferably, the guide plate is obliquely arranged or is an arc-shaped guide plate.

Further, first elasticity portion, deflector homogeneous phase are located rifle body both sides relatively, two the one end of first elasticity portion is connected with the both sides of first joint portion respectively.

Furthermore, the piston comprises a connecting rod and a piston body which are connected, the connecting rod is connected with the pressing handle through a sliding structure, and an outer skirt edge which is hermetically arranged on the inner wall of the pressure cavity is arranged on the piston body.

Further, the head cap is connected with the gun body in a rotating mode, the shunting structure comprises a shunting disc and a shunting body, the shunting disc is connected with the gun body in a sealing mode, the shunting body is installed on the shunting disc, a liquid inlet cavity is formed between the outer wall of the shunting body and the inner wall of the head cap or the gun body, a current collecting groove is formed in the shunting disc and is communicated with the liquid outlet hole and the liquid inlet cavity, a plurality of first shunting grooves are formed in the outer wall of the shunting body at intervals, a plurality of spraying channels communicated with the liquid inlet cavity are formed in the inner wall of the head cap, a plurality of current guiding blocks distributed at intervals are arranged in the head cap, two adjacent current guiding grooves are formed between the current guiding blocks, the first current guiding grooves are communicated with the spraying channels, and the current guiding grooves are communicated with the spraying holes.

Preferably, a plurality of shunting holes are formed in the inner wall of the flow collecting groove and penetrate through the shunting plate to communicate the flow collecting groove with the liquid inlet cavity.

Preferably, the gun body is further provided with a spraying cover body, and the head cap is movably connected with the spraying cover body.

Furthermore, a rotating sleeve which is communicated with the liquid spraying channel and the flow distribution disc is arranged on the gun body, a sealing sleeve is arranged in the head cap, the head cap is in rotating sealing fit with the rotating sleeve, the rotating sleeve is sleeved on the sealing sleeve, the flow distribution disc is in sealing connection with the rotating sleeve, a liquid inlet cavity is formed between the flow distribution body and the rotating sleeve or between the flow distribution body and the inner wall of the sealing sleeve, the flow distribution body is inserted into the sealing sleeve in a matching mode and abuts against a flow guide block of the head cap, the spraying channel is arranged on the inner side wall of the sealing sleeve, and the flow guide block is located in the sealing sleeve.

Preferably, a positioning piece is arranged between the shunting disc and the rotating sleeve.

Furthermore, the first opening and closing structure further comprises a shunting head which is slidably arranged in the liquid outlet hole and is abutted against the shunting structure, the shunting head is connected with the first elastic part, and a plurality of shunting channels which are communicated with the liquid spraying channels and the shunting structure are arranged on the outer wall of the shunting head at intervals.

Preferably, the first opening and closing body is provided with an upright post which passes through the first opening and closing opening.

Preferably, the first elastic part comprises a plurality of connected arc-shaped bent parts, the first elastic part is generally wave-shaped, and the side walls of two adjacent arc-shaped bent parts are correspondingly provided with limiting blocks which can be tightly attached to each other.

Furthermore, the elastic sealing element is a bowl-shaped structure with a large upper end and a small lower end, and the lower end of the elastic sealing element is clamped in the liquid channel.

Preferably, the wall thickness of the elastic sealing member becomes thinner gradually from bottom to top.

Further, the pressure chambers are arranged horizontally or obliquely;

preferably, one end of the second opening and closing body, which is close to the liquid inlet hole, is provided with a mounting seat, the mounting seat is provided with an air return port, and the mounting seat is provided with a connecting piece movably connected with the liquid storage bottle.

Preferably, the first opening and closing structure and the second opening and closing structure are made of plastic materials.

Furthermore, the first elastic part is provided with a butting part which is matched with the guide plate to abut against the guide plate.

Furthermore, a guide sleeve is arranged on the pressure cavity and is in sliding connection with the connecting rod.

Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:

according to the spray gun head provided by the utility model, the first opening and closing body is arranged in the liquid spraying channel, the second opening and closing body is arranged in the suction channel, so that a pressure space is formed between the first opening and closing body and the second opening and closing body, double sealing is realized, the sealing performance of the spray gun head is improved, only one of the first opening and closing body and the second opening and closing body is opened under the action of the piston, the other one of the first opening and closing body and the second opening and closing body is closed, liquid leakage is avoided, the injection pressure of liquid is increased due to the arrangement of the first elastic part, and the problem of uneven liquid spraying amount caused by different pressing forces is avoided; the first opening and closing structure is transversely arranged in the liquid spraying channel, so that the spraying path of the liquid is shortened, and the spraying pressure and the spraying amount of the liquid are ensured; the one end of second elastic component with press the handle and be connected, the other end and the deflector sliding connection of second elastic component, under the effect of pressing the handle, the right-hand member of second elastic component slides backward along the deflector earlier, then moves down the bending and produce deformation, and the drive power that will press the handle transmits the connecting rod for with the smoothness, utilizes the bounce of lever to form the drive power that kick-backs, can realize resetting fast, and the deformation volume is less, has prolonged the live time.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Figure 1 is a perspective view of a spray gun head provided in an embodiment of the utility model;

fig. 2 is a perspective view of a spray gun head according to an embodiment of the present invention with a spray shroud removed;

figure 3 is an exploded schematic view of a spray gun head according to an embodiment of the present invention;

FIG. 4 is a schematic sectional view (I) of a spray gun head according to an embodiment of the present invention when the head cap is rotated to open the spray hole;

FIG. 5 is a schematic sectional view of a spray gun head according to an embodiment of the present invention when the head cap is rotated to open the spray hole (II);

FIG. 6 is an enlarged view of portion A of FIG. 4;

FIG. 7 is a perspective view (one) of a headgear and shunt structure provided in accordance with an embodiment of the present invention;

fig. 8 is a perspective view (ii) of the headgear and the shunt structure according to the embodiment of the present invention;

FIG. 9 is a perspective view of a first opening and closing structure provided in the embodiments of the present invention;

FIG. 10 is a perspective view of a second resilient member provided in accordance with an embodiment of the present invention;

FIG. 11 is a perspective view of a resilient seal provided by an embodiment of the present invention;

fig. 12 is an exploded view of the plunger, guide sleeve and push handle according to the embodiment of the present invention.

The reference numbers are as follows:

1. a gun body, 2, an air compression assembly, 21, a pressure cavity, 21a, an air inlet and liquid inlet hole, 211, a guide sleeve, 22, a piston, 22a, a connecting rod, 22b, a piston body, 22c, an outer skirt, 3, a suction channel, 4, a liquid spraying channel, 4a, a liquid outlet hole, 41, a limiting structure, 41a, a first opening and closing opening, 5, a head cap, 5a, a spraying hole, 5b, a spraying channel, 51, a flow guide block, 51a, a flow guide groove, 52, a sealing sleeve, 6, a flow dividing structure, 61, a flow dividing disc, 61a, a flow collecting groove, 61b, a flow dividing hole, 61d, a limiting plane, 62, a flow dividing body, 62a first flow dividing groove, 63, an opening and closing liquid inlet cavity, 7, a first opening and closing structure, 71, a first opening and closing body, 72, a first elastic piece, 72a, an arc-shaped bending part, 72b, a limiting block, 73, a flow dividing head, 73a flow dividing channel, 74, a stand column, 8 and a second opening and closing structure, 81. the liquid spraying device comprises a second opening and closing body, 81a, a liquid channel, 81b, a liquid through hole, 82, an elastic sealing element, 83, a liquid through cavity, 9, a spraying cover body, 10, a pressing handle, 11, a sliding structure, 11a, a sliding groove, 11b, a limiting bump, 12, a guide plate, 13, a second elastic element, 13a, a first elastic part, 13b, a first clamping part, 13c, a butting part, 14, a rotating sleeve, 14a, a through hole, 15, a positioning part, 16, a mounting seat, 16a, an air return opening, 17, a connecting element, 18 and a liquid inlet pipe.

Detailed Description

In order that those skilled in the art will better understand the utility model and thus more clearly define the scope of the utility model as claimed, it is described in detail below with respect to certain specific embodiments thereof. It should be noted that the following is only a few embodiments of the present invention, and the specific direct description of the related structures is only for the convenience of understanding the present invention, and the specific features do not of course directly limit the scope of the present invention. Such alterations and modifications as are made obvious by those skilled in the art and guided by the teachings herein are intended to be within the scope of the utility model as claimed.

The utility model is further described with reference to the following figures and specific examples.

Example 1

As shown in fig. 1-5 and 9, the present invention provides a spray gun head, which includes a gun body 1, wherein the gun body 1 is provided with an air compression assembly 2, a suction channel 3 and a liquid spray channel 4, the air compression assembly 2 includes a pressure cavity 21 and a piston 22, the pressure cavity 21 is provided with an air inlet and liquid inlet hole 21a communicated with the suction channel 3, the piston 22 is in sliding and sealing fit with the pressure cavity 21, the suction channel 3 is communicated with the liquid spray channel 4, one end of the suction channel 3 is provided with a liquid inlet hole connected with a liquid storage bottle, the other end of the liquid spray channel 4 is provided with a liquid outlet hole 4a, the gun body 1 is provided with a head cap 5, a shunting structure 6 for converting liquid into spray is arranged between the gun body 1 and the head cap 5, the head cap 5 is provided with a spray hole 5a movably connected with the shunting structure 6, and the shunting structure 6 is communicated with the liquid outlet hole 4 a. Wherein the pressure chamber 21 is arranged on the gun body 1. The connection part of the suction channel 3 and the liquid spraying channel 4 is provided with a liquid passing port.

The liquid spraying channel 4 is internally provided with a first opening and closing structure 7 for opening or closing the liquid spraying channel 4, the first opening and closing structure 7 comprises a first opening and closing body 71 and a first elastic part 72 which are connected, the liquid spraying channel 4 is internally provided with a limiting structure 41 with a first opening and closing port 41a, the first elastic part 72 is arranged on the liquid spraying channel 4 in a sliding manner, the first opening and closing body 71 can telescopically open the first opening and closing port 41a or is arranged in a sealing manner with the first opening and closing port 41a, and a gap is reserved between the first opening and closing body 71 and the inner wall of the liquid spraying channel 4.

Be equipped with in the suction channel 3 and be used for opening or close suction channel 3's second and open and close structure 8, second opens and close structure 8 is including the second that is connected and opens and close body 81 and elastic sealing element 82, second opens and closes body 81 and elastic sealing element 82 and all is located the feed liquor hole 21a below of admitting air, second opens and closes body 81 and seal to locate in suction channel 3, be equipped with the liquid passage 81a with the stock solution bottle intercommunication on the second opens and closes body 81, be equipped with logical liquid hole 81b on the liquid passage 81a, elastic sealing element 82 sets up with suction channel 3's inner wall elastic sealing, elastic sealing element 82, form the logical liquid chamber 83 that communicates with logical liquid hole 81b between the inner wall of second opens and close body 81 and suction channel 3. The first opening and closing structure 7 and the second opening and closing structure 8 are made of plastic materials, are convenient to recycle, and are not easy to react with liquid.

As shown in fig. 9, specifically, the first opening and closing structure 7 further includes a diversion head 73 slidably disposed in the liquid outlet hole 4a and abutting against the diversion structure 6, the diversion head 73 is connected to the first elastic member 72, and a plurality of diversion channels 73a communicating the liquid spraying channel 4 and the diversion structure 6 are disposed at intervals on an outer wall of the diversion head 73. The stability of the structure of the first shutter 7 is improved and the first shutter 71 slides smoothly along the liquid ejecting path 4.

Preferably, the first elastic member 72 includes a plurality of connected curved portions 72a, which are generally wave-shaped, and have a faster return speed and are not easily broken. The side walls of the two adjacent arc-shaped bending parts 72a are correspondingly provided with limit blocks 72b which can be tightly attached to each other, and the first opening and closing body 71 is pressed to drive the first elastic part 72 to compress, so that the limit blocks 72b are tightly attached to each other to limit the compression distance of the first elastic part 72 and prevent the first elastic part 72 from being fatigued due to excessive deformation.

Preferably, the position-limiting structure 41 is a ring groove disposed on the inner wall of the liquid-spraying channel 4, and the first opening/closing body 71 is an opening/closing plate attached to the ring groove to close the hole in the ring groove. The front end of the shunting head 73 is provided with a disc body, the rear end of the shunting head 73 is in a plate shape, and the upper surface and the lower surface of the plate body of the shunting head 73 are respectively provided with a plurality of spaced shunting channels 73a formed between the partitioning ribs and the plate body.

Further, the first opening/closing body 71 is provided with a pillar 74 provided to penetrate the first opening/closing port 41 a. The first opening and closing body 71 is positioned and guided, so that the first opening and closing body 71 moves more stably.

As shown in fig. 11, the elastic sealing member 82 is a bowl-shaped structure with a large upper end and a small lower end, and the lower end of the elastic sealing member 82 is clamped in the liquid passage 81 a. The elastic sealing element 82 cannot move up and down along the suction channel 3, the resetting speed is high, the liquid output is more stable, liquid does not flow back from the elastic sealing element 82 easily, and the sealing performance is good.

Preferably, the wall thickness of the elastic seal 82 becomes gradually thinner from the bottom to the top. The elastic seal 82 is easily opened and can be quickly reset to effect sealing of the suction channel 3.

Preferably, the lower end of the elastic sealing member 82 is disposed in the liquid passage 81a through the second shutter 81.

Further, the upper end of the elastic sealing member 82 is interference-fitted with the inner wall of the liquid passage 81 a.

Preferably, the second opening and closing body 81 has a thin upper end and a thick lower end, and is transitionally provided at the middle by a tapered surface.

Further, three liquid passing holes 81b are provided at intervals in the circumferential direction of the second opening/closing body 81.

Specifically, a gap communicating with the liquid passage hole 81b exists between the second shutter 81 and the inner wall of the suction passage 3 and between the elastic seal 82 and the inner wall.

As shown in fig. 6-8, preferably, the head cap 5 is rotatably connected to the gun body 1, the flow dividing structure 6 includes a flow dividing disc 61 and a flow dividing body 62, the flow dividing disc 61 is hermetically connected to the gun body 1, the flow dividing body 62 is mounted on the flow dividing disc 61, a liquid inlet cavity 63 is disposed between an outer wall of the flow dividing body 62 and an inner wall of the head cap 5 or the gun body 1, a flow collecting groove 61a is disposed on the flow dividing disc 61, the flow collecting groove 61a communicates with the liquid outlet 4a and the liquid inlet cavity 63, a plurality of first flow dividing grooves 62a are disposed at intervals on an outer wall of the flow dividing body 62, a plurality of spray channels 5b communicated with the liquid inlet cavity 63 are disposed on an inner wall of the head cap 5, a plurality of flow guiding blocks 51 are disposed at intervals in the head cap 5, a flow guiding groove 51a is formed between two adjacent flow guiding blocks 51, the first flow dividing grooves 62a communicate with the spray channels 5b, and the spray channels 5a communicate with the spray outlets 5 a.

Through the rotating head cap 5, the first diversion trench 62a is communicated with the spraying channel 5b to achieve the purpose of opening and closing, water in the liquid spraying channel 4 enters the liquid inlet cavity 63 through the flow collecting trench 61a, then is dispersed into the diversion trenches 51a from the spraying channel 5b and the first diversion trench 62a in sequence, and the diversion trenches 51a in different shapes are arranged, so that the shape and the size of liquid sprayed out of the spraying hole 5a are different.

Specifically, one spray hole 5a is provided. The spraying channel 5b is a through groove arranged at intervals along the circumferential direction and is provided with six strips. The first diversion groove 62a is provided with three in the circumferential direction. By rotating the head cap 5, the head cap 5 and the shunt structure 6 of the gun body 1 are opened or closed in different directions, and the switching operation can be realized in different directions.

Preferably, the guide groove 51a is at least one of a linear groove and a bent groove. A plurality of bending grooves are formed along the circumferential direction of the inner wall of the head cap 5 to form a spiral liquid flow channel so as to realize the mist spraying effect, and a plurality of linear grooves are formed along the circumferential direction of the inner wall of the head cap 5 to realize the mist spraying effect. The linear groove and the bending groove are arranged at intervals, so that the linear fog and the fog spraying effects can be formed in different directions, the spraying diversity is increased, and the user experience is optimized.

Preferably, the inner wall of the collecting tank 61a is provided with a plurality of branch holes 61b, and the branch holes 61b penetrate through the branch plate 61 to communicate the collecting tank 61a with the liquid inlet chamber 63. The liquid is firstly shunted through the shunt hole 61b, then is concentrated to the liquid inlet cavity 63, is secondarily shunted through the first shunt groove 62a, and finally is converged and sprayed out through the spray hole 5 a.

Specifically, a rotating sleeve 14 for communicating the liquid spraying channel 4 with the shunt plate 61 is arranged on the gun body 1, a sealing sleeve 52 is arranged in the head cap 5, the head cap 5 is in rotating sealing fit with the rotating sleeve 14, the rotating sleeve 14 is sleeved on the sealing sleeve 52, the shunt plate 61 is in sealing connection with the rotating sleeve 14, a liquid inlet cavity 63 is formed between the shunt body 62 and the rotating sleeve 14 or the inner wall of the sealing sleeve 52, the shunt body 62 is inserted into the sealing sleeve 52 in a matching manner and abuts against a flow guide block 51 of the head cap 5, the spraying channel 5b is arranged on the inner side wall of the sealing sleeve 52, and the flow guide block 51 is located in the sealing sleeve 52. The head cap 5 is rotatably connected with the rotary sleeve 14, so that the head cap 5 is communicated with or closed by the shunting body 62, and the function of a switch is realized.

Preferably, a positioning member 15 is arranged between the diverter tray 61 and the rotary sleeve 14. For positioning the diverter tray 61.

Further, the positioning member 15 includes a groove and a protrusion which are connected in a matching manner, the outer side wall of the diverter tray 61 is provided with the groove, and the inner wall of the rotary sleeve 14 is provided with the protrusion.

Preferably, the diverter disc 61 is further provided with a limiting plane 61d, the inner side wall of the rotary sleeve 14 is provided with a positioning block opposite to the projection, and the limiting plane 61d is matched with the positioning block to abut against the positioning block. Through recess and spacing plane 61d respectively with change cover 14 and fix a position, improve the stability that diverter plate 61 and change cover 14 are connected, make diverter plate 61 difficult the rotation.

Preferably, the outer wall of the rotating sleeve 14 is provided with a limiting ring, the inner wall of the head cap 5 is provided with an annular limiting groove, and the limiting ring rotates in the limiting groove.

Preferably, the gun body 1 is further provided with a spraying cover body 9, and the head cap 5 is movably connected with the spraying cover body 9. Wherein the head cap 5 is matched with the spraying cover body 9 to rotate and abut against.

As shown in fig. 12, the gun body 1 is preferably hinged with a pressing handle 10, and a sliding structure 11 is provided between the pressing handle 10 and the piston 22.

When the pressing handle 10 presses the piston 22, an oblique force exists, so that the force is not uniform, the piston can be inclined relative to the pressure chamber 21, and the problems of liquid leakage and air leakage of the pressure chamber 21 can be caused. Through piston 22 and pressing handle 10 sliding connection for the central point of piston 22 can freely slide under the effect of pressure, makes piston 22 and pressure chamber 21 remain at encapsulated situation all the time, can avoid taking place the condition of weeping, and can make piston 22's removal more steady, in order to improve life.

Preferably, the sliding structure 11 is a sliding hole and a limiting shaft which are slidably connected in a matching manner, or a sliding groove 11a and a limiting projection 11b which are slidably arranged in a matching manner.

Preferably, sliding grooves 11a are formed on both sides of the piston 22, a slot into which the piston rod 22a is inserted is formed in the pressing handle 10, and a limiting protrusion 11b is formed in the slot to relatively maintain an interval.

As shown in fig. 12, in detail, the piston 22 includes a connecting rod 22a and a piston body 22b connected to each other, the connecting rod 22a is connected to the pressing handle 10 through the sliding structure 11, and the piston body 22b is provided with an outer skirt 22c sealed with the inner wall of the pressure chamber 21.

Preferably, the pressure chamber 21 is provided with a guide sleeve 211, and the guide sleeve 211 is slidably connected with the connecting rod 22 a. Through setting up uide bushing 211 for connecting rod 22a removes more stably, makes piston body 22b be difficult to produce the phenomenon of unilateral wearing and tearing with pressure chamber 21.

Preferably, the middle of the outer skirt 22c is recessed, and the two ends of the outer skirt are tilted upward to seal with the inner wall of the pressure chamber 21. One end of the outer skirt 22c is in sealing fit with the guide sleeve 211 through a conical surface, so that liquid leakage can be effectively prevented. Further, the guide sleeve 211 is sleeved on the connecting rod 22a and is partially accommodated in the pressure chamber 21 in a matching manner.

Specifically, the pressure chambers 21 are arranged horizontally or obliquely. The pressure chamber 21 is disposed obliquely upward toward the intake liquid inlet hole 21 a.

Further, the pressure chamber 21 is located below the liquid ejection channel 4 for easy operation.

As shown in fig. 10, preferably, a guide plate 12 is disposed on the gun body 1, a second elastic member 13 is disposed between the pressing handle 10 and the guide plate 12, the second elastic member 13 includes a first elastic portion 13a, a first clamping portion 13b is disposed at one end of the first elastic portion 13a, the first clamping portion 13b is clamped with the pressing handle 10, and the other end of the first elastic portion 13a is matched with the guide plate 12 to slide and abut against the same.

Preferably, the guide plate 12 is disposed obliquely or is an arc-shaped guide plate. Wherein, the guide plate 12 is arranged obliquely upwards towards the second elastic piece 13, and the inclination angle of the guide plate 12 and the horizontal direction is 15-30 degrees.

One end of the second elastic piece 13 is connected with the pressing handle 10, the other end of the second elastic piece 13 is connected with the guide plate 12 in a sliding manner, under the action of the pressing handle 10, the second elastic piece 13 slides backwards along the guide plate 12 firstly, then moves downwards and bends to generate deformation, and the transverse displacement cannot occur in the moving process, the driving force for pressing the handle 10 is smoothly transmitted to the connecting rod 22a, the rebound driving force is formed by the rebound force of the lever principle when the pressing handle 10 stops applying force, quick reset can be realized, the pressing comfort is improved, the deformation quantity is small, and the service life is prolonged. The second elastic element 13 is positioned outside the pressure cavity 21, and compared with the second elastic element arranged inside the pressure cavity 21, the service life is longer, and the cost is reduced.

Preferably, the first elastic portion 13a is provided with an abutting portion 13c which abuts against the guide plate 12. Contact with the generation pressure chamber 21 during downward movement of the free end of the first elastic portion 13a is avoided.

Specifically, the first elastic portion 13a and the guide plate 12 are disposed on two sides of the gun body 1, and one end of each of the two first elastic portions 13a is connected to two sides of the first engaging portion 13 b. The double-lever structure is formed, the fracture is not easy to occur due to deformation, and the toughness and the elasticity are better.

Preferably, the first latch portion 13b is located in the middle of the hinge point of the pressing handle 10 and the gun body 1 and the connection point of the pressing handle 10 and the connection rod 22 a. So as to shorten the deformation degree of the first elastic part 11a caused by compression, which is beneficial to prolonging the service time of the second elastic part 13.

Further, a clamping groove clamped with the first clamping portion 13b is arranged on the pressing handle 10.

Preferably, the guide plate 12 and the second elastic member 13 are located above the pressure chamber 21. A gap is left between the movable end of the first elastic part 13a and the outer wall of the pressure chamber 21, and the first elastic part 13a is driven by the piston 22 to slide along the guide plate 12 to a position where it does not contact the pressure chamber 21.

Further, the first elastic portion 13a is curved in an arc shape, and the first elastic portion 13a is provided with an arc waist hole, so that the first elastic portion is more easily curved. Wherein the bending radian of the first elastic part 13a in a natural stretching state is R15mm-R20 mm.

Preferably, an installation seat 16 is arranged at one end of the second opening and closing body 81 close to the liquid inlet hole, an air return opening 16a is arranged on the installation seat 16, and a connecting piece 17 movably connected with the liquid storage bottle is arranged on the installation seat 16. Wherein, the air return port 16a is communicated with the pressure cavity 21, thereby avoiding the situation that the air pressure inside and outside the liquid storage bottle is inconsistent.

Preferably, the mounting base 16 is provided with an inlet pipe 18 disposed through the connecting member 17.

Further, the liquid storage bottle is in threaded connection with the connecting piece 17. A sealing gasket is arranged between the liquid storage bottle and the connecting piece 17.

Preferably, the lower end of the gun body 1 is provided with a containing groove communicated with the liquid inlet hole, and the periphery of the mounting seat 16 is provided with a limiting ring which is abutted against the containing groove. The liquid passage 81a is provided to penetrate the mount 16.

The spray gun head is a full plastic spray gun head, which is beneficial to environmental protection and is convenient to recycle.

The working principle of the spray gun head provided by the utility model is as follows: the first opening and closing body 71 elastically seals the first opening and closing opening 41a through the first elastic member 72 to close the liquid spraying channel 4, the elastic sealing member 82 elastically seals the suction channel 3 due to interference fit, when in use, the piston 22 slides along the pressure chamber 21 to compress air, the air sequentially enters the liquid spraying channel 4 through the pressure chamber 21 and the suction channel 3 to abut against the first opening and closing body 71, under the elastic force of the first elastic member 72, a large enough driving force needs to be applied to the piston 22 to enable the first opening and closing body 71 to leave the first opening and closing opening 41a, the air is discharged from the head cap 5 through the flow dividing structure 6 along a gap, and at the moment, the elastic sealing member 82 keeps a sealed state; when the piston is drawn out, the first opening and closing body 71 keeps a sealed state, the liquid presses the outer wall of the elastic sealing element 82 to generate a gap, after the liquid in the liquid storage bottle is sucked into the pressure chamber 21 and the suction channel 3, the elastic sealing element 82 can be quickly reset without external force, finally, the piston 22 is pressed, the elastic sealing element 82 keeps the sealed state, the liquid in the pressure chamber 21 and the suction channel 3 presses the first opening and closing body 71 to open the first opening and closing port 41a again, and the liquid is shunted by the shunt structure 6 and finally atomized and sprayed out from the spray hole 5 a.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims (12)

1. A spray gun head, its characterized in that: comprises a gun body (1), an air compression assembly (2), a suction channel (3) and a liquid spraying channel (4) are arranged on the gun body (1), the air compression assembly (2) comprises a pressure cavity (21) and a piston (22), an air inlet liquid inlet hole (21a) communicated with the suction channel (3) is formed in the pressure cavity (21), the piston (22) is matched with the pressure cavity (21) in a sliding and sealing manner, the suction channel (3) is communicated with the liquid spraying channel (4), a liquid inlet hole connected with a liquid storage bottle is formed in one end of the suction channel (3), a liquid outlet hole (4a) is formed in the other end of the liquid spraying channel (4), a head cap (5) is installed on the gun body (1), a shunting structure (6) used for converting liquid into spraying is arranged between the gun body (1) and the head cap (5), and a spraying hole (5a) movably connected with the shunting structure (6) is formed in the head cap (5), the flow dividing structure (6) is communicated with the liquid outlet hole (4 a);

a first opening and closing structure (7) for opening or closing the liquid spraying channel (4) is arranged in the liquid spraying channel (4), the first opening and closing structure (7) comprises a first opening and closing body (71) and a first elastic piece (72) which are connected, a limiting structure (41) with a first opening and closing opening (41a) is arranged in the liquid spraying channel (4), the first elastic piece (72) is arranged on the liquid spraying channel (4) in a sliding mode, the first opening and closing body (71) can telescopically open the first opening and closing opening (41a) or is arranged in a sealing mode with the first opening and closing opening (41a), and a gap is reserved between the first opening and closing body (71) and the inner wall of the liquid spraying channel (4);

a second opening and closing structure (8) for opening or closing the suction channel (3) is arranged in the suction channel (3), the second opening and closing structure (8) comprises a second opening and closing body (81) and an elastic sealing element (82) which are connected, the second opening and closing body (81) and the elastic sealing piece (82) are positioned below the air inlet hole (21a), the second opening and closing body (81) is hermetically arranged in the suction channel (3), a liquid channel (81a) communicated with the liquid storage bottle is arranged on the second opening and closing body (81), the liquid channel (81a) is provided with a liquid through hole (81b), the elastic sealing element (82) is elastically sealed with the inner wall of the suction channel (3), and a liquid passing cavity (83) communicated with the liquid passing hole (81b) is formed among the elastic sealing piece (82), the second opening and closing body (81) and the inner wall of the suction channel (3).

2. A spray lance head according to claim 1, wherein: a pressing handle (10) is hinged to the gun body (1), and a sliding structure (11) is arranged between the pressing handle (10) and the piston (22);

the sliding structure (11) is a sliding hole and a limiting shaft which are in sliding connection in a matched mode, or a sliding groove (11a) and a limiting lug (11b) which are in sliding connection in a matched mode.

3. A spray lance head according to claim 2, wherein: the gun body (1) is provided with a guide plate (12), a second elastic piece (13) is arranged between the pressing handle (10) and the guide plate (12), the second elastic piece (13) comprises a first elastic part (13a), one end of the first elastic part (13a) is provided with a first clamping part (13b), the first clamping part (13b) is clamped with the pressing handle (10), and the other end of the first elastic part (13a) is matched with the guide plate (12) to be slidably abutted against the guide plate;

the guide plate (12) is obliquely arranged or is an arc-shaped guide plate.

4. A spray lance head according to claim 3, wherein: first elastic component (13a), deflector (12) are all located rifle body (1) both sides relatively, two be connected with the both sides of first joint portion (13b) between the one end of first elastic component (13a) respectively.

5. A spray lance head according to claim 1 or claim 2, wherein: the piston (22) comprises a connecting rod (22a) and a piston body (22b) which are connected, the connecting rod (22a) is connected with the pressing handle (10) through a sliding structure (11), and an outer skirt edge (22c) which is sealed with the inner wall of the pressure cavity (21) is arranged on the piston body (22 b).

6. A spray lance head according to claim 1, wherein: the head cap (5) is rotatably connected with the gun body (1), the flow dividing structure (6) comprises a flow dividing disc (61) and a flow dividing body (62), the flow dividing disc (61) is connected with the gun body (1) in a sealing manner, the flow dividing body (62) is installed on the flow dividing disc (61), a liquid inlet cavity (63) is arranged between the outer wall of the flow dividing body (62) and the inner wall of the head cap (5) or the gun body (1), a flow collecting groove (61a) is arranged on the flow dividing disc (61), the flow collecting groove (61a) is communicated with a liquid outlet hole (4a) and a liquid inlet cavity (63), a plurality of first flow dividing grooves (62a) are arranged on the outer wall of the flow dividing body (62) at intervals, a plurality of spraying channels (5b) communicated with the liquid inlet cavity (63) are arranged on the inner wall of the head cap (5), a plurality of flow guiding blocks (51) distributed at intervals are arranged in the head cap (5), and a flow guiding groove (51a) is formed between two adjacent flow guiding blocks (51), the first diversion groove (62a) is communicated with the spraying channel (5b), and the diversion groove (51a) is communicated with the spraying channel (5b) and the spraying hole (5 a);

a plurality of shunting holes (61b) are formed in the inner wall of the collecting groove (61a), and the shunting holes (61b) penetrate through the shunting plate (61) to communicate the collecting groove (61a) with the liquid inlet cavity (63);

the gun body (1) is further provided with a spraying cover body (9), and the head cap (5) is movably connected with the spraying cover body (9).

7. A spray lance head according to claim 6, wherein: the spray gun is characterized in that a rotating sleeve (14) which is communicated with a liquid spraying channel (4) and a flow distribution disc (61) is arranged on the gun body (1), a sealing sleeve (52) is arranged in a head cap (5), the head cap (5) is in rotating sealing fit with the rotating sleeve (14), the rotating sleeve (14) is sleeved on the sealing sleeve (52), the flow distribution disc (61) is in sealing connection with the rotating sleeve (14), a liquid inlet cavity (63) is formed between the flow distribution body (62) and the rotating sleeve (14) or the inner wall of the sealing sleeve (52), the flow distribution body (62) is inserted into the sealing sleeve (52) in a matching mode and abuts against a flow guide block (51) of the head cap (5), a spray channel (5b) is arranged on the inner side wall of the sealing sleeve (52), and the flow guide block (51) is located in the sealing sleeve (52);

and a positioning piece (15) is arranged between the flow distribution disc (61) and the rotating sleeve (14).

8. A spray lance head according to claim 1, wherein: the first opening and closing structure (7) further comprises a shunting head (73) which is slidably arranged in the liquid outlet hole (4a) and abuts against the shunting structure (6), the shunting head (73) is connected with the first elastic piece (72), and a plurality of shunting channels (73a) which are communicated with the liquid spraying channel (4) and the shunting structure (6) are arranged on the outer wall of the shunting head (73) at intervals;

the first elastic piece (72) comprises a plurality of connected arc-shaped bent parts (72a) which are wavy overall, and the side walls of two adjacent arc-shaped bent parts (72a) are correspondingly provided with limit blocks (72b) which can be tightly attached to each other.

9. A spray lance head according to claim 1, wherein: the elastic sealing element (82) is of a bowl-shaped structure with a large upper end and a small lower end, and the lower end of the elastic sealing element (82) is clamped in the liquid channel (81 a);

the wall thickness of the elastic sealing element (82) becomes thinner gradually from bottom to top.

10. A spray lance head according to claim 1, wherein: the pressure chambers (21) are arranged horizontally or obliquely;

a mounting seat (16) is arranged at one end of the second opening and closing body (81) close to the liquid inlet hole, an air return opening (16a) is formed in the mounting seat (16), and a connecting piece (17) movably connected with the liquid storage bottle is mounted on the mounting seat (16);

the first opening and closing structure (7) and the second opening and closing structure (8) are made of plastic materials.

11. A spray lance head according to claim 3, wherein: and the first elastic part (13a) is provided with an abutting part (13c) which is matched with and abutted against the guide plate (12).

12. A spray lance head according to claim 5, wherein: the pressure cavity (21) is provided with a guide sleeve (211), and the guide sleeve (211) is connected with the connecting rod (22a) in a sliding manner.

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