All-plastic hand buckle spray gun

Abstract

The utility model discloses an all-plastic hand buckle spray gun, which relates to the technical field of spray guns and comprises a threaded base and a spray gun body, the spray gun body is arranged at the top end of the threaded base, a straw seat is fixedly arranged at the top end in the threaded base, a piston cavity is fixedly arranged in the middle of the spray gun body, and an annular seat is fixedly arranged at the bottom end of the piston cavity. A communicating groove is formed in one end of the inner side wall of the piston cavity in a penetrating mode, and a valve body is arranged between the straw base and the annular base and is of a boss-shaped structure. The valve element is arranged in the middle of the valve body, the suction pipe sleeve corresponding to the valve element is arranged in the middle of the suction pipe base, air or materials in the piston cavity are removed, and meanwhile the valve element is pressed in the suction pipe sleeve so as to seal the materials in a spray gun stock bin. And outside air is isolated while the materials are sucked, so that the storage of the materials in the stock bin is prevented from being influenced by the air.

Description

Technical Field

[0001] The utility model relates to the technical field of spray guns, and particularly relates to a fully plastic hand-held spray gun. Background Technique

[0002] A hand-held spray gun is a device that uses the rapid release of liquid or compressed air as power. The hand-held spray gun can be used for spraying various liquids in daily life. Products such as cleaning agents commonly used in daily life also use hand-held spray guns for spraying, which is convenient for the use of cleaning agents.

[0003] For example, a fully plastic recyclable hand-held spray gun with the publication number of CN215884730U. It includes a pump body, a bottle cap, a valve rod, a spray head, and a pressing piece. Among them, the pressing piece squeezes the pump body through the valve rod, and the valve rod transfers the liquid in the pump body to the spray head; the spray head includes an inner plug column arranged at one end of the valve rod away from the pump body and an end cap arranged on the outer peripheral surface of the valve rod, and the end cap slides movably on the valve rod; a liquid outlet hole is penetrated through the outer end surface of the end cap, a contact block is arranged on the inner end surface of the end cap, an atomization channel for atomizing the liquid is arranged on the contact block, and the atomization channel is communicated with the liquid outlet hole; a liquid guiding groove is arranged on the outer peripheral surface of the inner plug column, and the liquid guiding groove is always communicated with the atomization channel. This application has the effect that the operation of switching the water spraying and spraying states is relatively convenient.

[0004] The above technical solution has some problems in practical applications. The isolation effect between the inner and outer spaces of the spray gun in this technical solution is poor, and it is difficult to ensure the isolation effect between the external air and the internal material when extracting the material, which is not conducive to the storage of the material during long-term use.

[0005] Therefore, it is very necessary to invent a fully plastic hand-held spray gun to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a fully plastic hand-held spray gun to solve the problems put forward in the above background technique.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an all-plastic hand-held spray gun, comprising a threaded base and a spray gun body, the spray gun body is arranged at the top of the threaded base, a straw seat is fixedly arranged at the inner top of the threaded base, a piston chamber is fixedly arranged at the middle of the spray gun body, an annular seat is fixedly arranged at the bottom end of the piston chamber, a connecting groove is penetrated through one end of the inner side wall of the piston chamber, and the bottom end of the connecting groove extends to the inside of the annular seat, a valve body is arranged between the straw seat and the annular seat, the valve body is arranged as a boss-shaped structure, and an arc surface is arranged in the middle of the valve body, and an annular A sealing seat with a structure, the top end of the sealing seat is plugged into the inside of the annular seat, and the sealing seat and the annular seat are interference connected up and down, a guide groove is provided at the bottom end of the outer wall of the annular seat and the overlap of the valve body, a valve core is provided in the middle of the top end of the valve body, a straw sleeve is fixedly provided in the middle of the upper surface of the straw seat, a convex rib of an annular structure is fixedly provided in the middle of the top end of the valve body, and the convex rib is interference connected with the top end of the straw sleeve, the bottom end of the valve core is plugged into the top pipe of the straw sleeve, a guide straw is fixedly provided at the bottom end of the straw sleeve, a discharge groove is provided in the inside of the spray gun body, and one end of the discharge groove extends to the outside of the annular seat.

[0008] Preferably, an annular groove corresponding to the straw seat is formed at the bottom end of the spray gun body, and the annular groove and the straw seat are snap-fitted and connected.

[0009] Preferably, a piston is provided inside the piston chamber, a piston rod is fixedly provided at one end of the piston, a wrench is movably provided at one end of the piston rod through a pin, and the top end of the wrench is movably provided at the middle part of the outer side of the spray gun body through the pin.

[0010] Preferably, a transmission rod is clamped on the inner top end of the wrench, and first elastic blocks with a "C"-shaped structure are fixedly provided at both ends of the transmission rod. A protruding platform is fixedly provided on the outer bottom end of the spray gun body, and the bottom end of the first elastic block is clamped on the upper surface of the protruding platform. A second elastic block with a "U"-shaped structure is fixedly provided on the bottom end of the side where the two first elastic blocks are close to each other, and the bottom end of the second elastic block is in contact with the upper surface of the protruding platform.

[0011] Preferably, a gun cover is fixedly provided on the outer side of the spray gun body, a nozzle is fixedly provided on one end of the gun cover, and the nozzle is provided at one end of the discharge trough.

[0012] Preferably, the valve core is shaped as a disc, a column or an inverted boss.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model arranges a straw seat between the spray gun body and the threaded base. A valve body is arranged above the straw seat. The valve body is set as a deformable boss structure. By arranging a valve core in the middle of the valve body and a straw sleeve corresponding to the valve core in the middle of the straw seat, when discharging materials, the compressed air in the piston cavity of the spray gun body causes the valve body to deform outwards. While discharging the air or materials inside the piston cavity, the valve core is pressed tightly in the straw sleeve to achieve the sealing of the materials in the material bin of the spray gun. When sucking materials, a suction force is generated in the piston cavity of the spray gun body, causing the valve body to deform inwards. At this time, the valve core is separated from the straw sleeve, isolating the outside air while sucking the materials, so as to avoid the influence of air on the storage of the materials in the material bin.

[0015] 2. The utility model arranges a wrench on the outside of the spray gun body. The wrench can drive the piston inside the piston cavity. By arranging a first elastic block and a second elastic block between the wrench and the spray gun body, the first elastic block is set as a "C" - shaped structure, which can use its own elastic potential energy to provide the kinetic energy for the wrench to rebound. The second elastic block is set as a "U" - shaped structure, which can improve the rebound effect of the first elastic block, thereby effectively ensuring the rebound effect and stability of the spray gun during continuous use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic cross - sectional view of the overall structure of the utility model.

[0018] Figure 3 It is a schematic cross - sectional view of the spray gun body structure of the utility model.

[0019] Figure 4 It is a schematic cross - sectional view of the valve body structure of the utility model.

[0020] Figure 5 It is a schematic diagram of the spray gun body structure of the utility model.

[0021] Figure 6 It is a schematic diagram of the first elastic block and the second elastic block structure of the utility model.

[0022] Figure 7 It is a schematic diagram of the disc - shaped structure of the valve body of the utility model.

[0023] Figure 8 It is a schematic diagram of the cylindrical structure of the valve body of the utility model.

[0024] Figure 9 It is a schematic diagram of the inverted boss - shaped structure of the valve body of the utility model.

[0025] In the figure: 1, threaded base; 2, straw holder; 3, spray gun body; 4, valve body; 5, piston; 6, gun cover; 201, straw sleeve; 202, diversion straw; 301, piston chamber; 302, annular seat; 303, communication groove; 304, diversion groove; 305, discharge groove; 31, annular groove; 401, arc surface; 402, sealing seat; 403, valve core; 404, rib; 501, piston rod; 502, wrench; 503, transmission rod; 504, first elastic block; 505, protruding platform; 506, second elastic block; 601, nozzle. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] The present invention provides a Figures 1-9 shown all-plastic hand-held spray gun, including a threaded base 1 and a spray gun body 3. The spray gun body 3 is arranged at the top end of the threaded base 1. The inner top end of the threaded base 1 is fixedly provided with a straw holder 2. An annular groove 31 corresponding to the straw holder 2 is opened at the bottom end of the spray gun body 3, and the annular groove 31 and the straw holder 2 are snap-connected. The snap-connection method facilitates the disassembly and maintenance of the spray gun body 3;

[0028] Specifically, a piston chamber 301 is fixedly arranged in the middle of the spray gun body 3. An annular seat 302 is fixedly arranged at the bottom end of the piston chamber 301. One end of the inner side wall of the piston chamber 301 is penetrated and provided with a communication groove 303, and the bottom end of the communication groove 303 extends into the inside of the annular seat 302. A valve body 4 is arranged between the straw holder 2 and the annular seat 302. The valve body 4 is arranged in a boss shape, and an arc surface 401 is arranged in the middle of the valve body 4. The arrangement of the arc surface 401 improves the deformation and resetting effects of the valve body 4. The top end of the valve body 4 is fixedly provided with an annular sealing seat 402. The top end of the sealing seat 402 is inserted into the inside of the annular seat 302, and the sealing seat 402 and the annular seat 302 are in an upper and lower interference connection. A diversion groove 304 is opened at the coincidence of the bottom end of the outer side wall of the annular seat 302 and the valve body 4. When the valve body 4 deforms outward, the sealing seat 402 expands outward, and the top end of the sealing seat 402 moves to the lower part of the diversion groove 304. At this time, the air or material in the sealing seat 402 can be discharged through the diversion groove 304;

[0029] Moreover, a valve core 403 is provided in the middle of the top end of the valve body 4. A convex rib 404 with an annular structure is fixedly provided in the middle of the top end of the valve body 4, and the convex rib 404 is in interference connection with the top end of the straw sleeve 201. The setting of the convex rib 404 can improve the sealing effect between the straw sleeve 201 and the valve body 4. The straw sleeve 201 is fixedly provided in the middle of the upper surface of the straw seat 2. The bottom end of the valve core 403 is inserted into the top pipe of the straw sleeve 201. When the valve body 4 deforms inward, the valve core 403 moves upward and separates from the straw sleeve 201 to realize the extraction of materials. When the valve body 4 deforms outward, the valve core 403 moves downward and presses tightly above the straw sleeve 201 to realize the sealing of the materials in the spray gun bin;

[0030] More specifically, the shape of the valve core 403 is set to be one of a disc shape, a column shape or an inverted boss shape;

[0031] When the valve core 403 is set to a disc-shaped structure, the valve core 403 is fixedly provided inside the sealing seat 402, and there is a gap between the valve core 403 and the sealing seat 402. The valve core 403 fits with the top end of the straw sleeve 201. When the valve core 403 separates from the straw sleeve 201, the disc-shaped structure enables a larger channel to be generated between the valve core 403 and the straw sleeve 201, facilitating the suction of more materials. The valve core 403 of this shape is used in spray guns with large flow rates;

[0032] When the valve core 403 is set to a columnar structure, the valve core 403 is fixedly provided at the inner top end of the straw sleeve 201, and there are multiple round holes between the valve core 403 and the straw sleeve 201. The top end of the valve core 403 is inserted into the middle of the top end of the valve body 4, and there is an annular rib for improving the sealing performance between the valve core 403 and the valve body 4. When the valve body 4 deforms, the columnar valve core 403 moves up and down in the annular rib in the middle of the top end of the valve body 4 to open and close the channel. The columnar structure design can increase the contact area between the valve core 403 and the valve body 4 to improve the sealing performance between the valve core 403 and the valve body 4, and a larger flow channel can be generated after the valve body 4 and the valve core 403 are separated. The valve core 403 of this shape is used in spray guns with large flow rates and high sealing requirements;

[0033] When the valve core 403 is set to an inverted boss-shaped structure, the valve core 403 is fixedly provided inside the sealing seat 402, and there is a gap between the valve core 403 and the sealing seat 402. The bottom end of the valve core 403 is inserted into the straw sleeve 201, and the cross-sections of the bottom end of the valve core 403 and the top end of the inner side wall of the straw sleeve 201 are both inclined to ensure the sealing effect between the valve core 403 and the straw sleeve 201. The valve core 403 of this shape is used in spray guns with high sealing requirements;

[0034] Furthermore, a guide suction pipe 202 is fixedly provided at the bottom end of the suction pipe sleeve 201, and a discharge groove 305 is provided inside the spray gun body 3, and one end of the discharge groove 305 extends to the outside of the annular seat 302, and the discharge groove 305 is used to discharge air or materials;

[0035] Furthermore, a piston 5 is disposed inside the piston chamber 301, a piston rod 501 is fixedly disposed at one end of the piston 5, a wrench 502 is movably disposed at one end of the piston rod 501 through a pin, and the top end of the wrench 502 is movably disposed at the middle part of the outer side of the spray gun body 3 through a pin, and the wrench 502 can drive the piston 5 to move through the piston rod 501 to realize the driving of the piston 5;

[0036] In addition, a transmission rod 503 is clamped on the inner top end of the wrench 502, and a first elastic block 504 of a "C"-shaped structure is fixedly provided at both ends of the transmission rod 503. A protruding platform 505 is fixedly provided on the outer bottom end of the spray gun body 3. The bottom end of the first elastic block 504 is clamped on the upper surface of the protruding platform 505. The "C"-shaped structure allows the first elastic block 504 to be compressed when the wrench 502 moves inward and provides kinetic energy when the wrench 502 is reset. A second elastic block 506 of a "U"-shaped structure is fixedly provided at the bottom end of one side where the two first elastic blocks 504 are close to each other, and the bottom end of the second elastic block 506 is in contact with the upper surface of the protruding platform 505. The second elastic block 506 can not only realize the connection between the two first elastic blocks 504, but also play an auxiliary role when the first elastic block 504 is compressed and reset.

[0037] Moreover, a gun cover 6 is fixedly provided on the outer side of the spray gun body 3, a nozzle 601 is fixedly provided on one end of the gun cover 6, and the nozzle 601 is arranged at one end of the discharge trough 305, and the nozzle 601 can guide the material during the spraying process.

[0038] Working principle of this utility model:

[0039] When the device is in use, when the wrench 502 is pressed for the first time, the wrench 502 drives the piston 5 to move, and the piston 5 compresses the air in the piston chamber 301. The air in the piston chamber 301 reaches the top of the valve body 4 through the connecting groove 303. At this time, the compressed air presses the valve core 403 against the top of the straw sleeve 201. At the same time, the valve body 4 is deformed under the action of the compressed air, and the valve body 4 drives the sealing seat 402 to deform downward. The wrench 502 is pressed until the top of the sealing seat 402 coincides with the guide groove 304 at the bottom of the annular seat 302. At this time, the compressed air in the sealing seat 402 and the piston chamber 301 is discharged through the guide groove 304 and the discharge groove 305. After the gas is discharged, the sealing seat 402 recovers its deformation under the action of its own elastic potential energy.

[0040] After the air in the piston chamber 301 is discharged, loosen the wrench 502. At this time, the wrench 502 resets under the action of the first elastic block 504 and the second elastic block 506. The wrench 502 drives the piston 5 to reset through the piston rod 501, so that the piston chamber 301 generates a suction force on the inside of the sealing seat 402. At this time, the valve core 403 moves upward under the action of the suction force, and the channel between the valve core 403 and the straw sleeve 201 is opened. The material passes through the diversion straw 202, the straw sleeve 201, the sealing seat 402 and the communication groove 303 and enters the piston chamber 301. After the wrench 502 is completely reset, the suction force of the piston chamber 301 on the sealing seat 402 disappears, and the valve core 403 resets under the action of the elastic potential energy of the valve body 4 itself, closing the channel between the straw sleeve 201 and the valve core 403. At this time, the extraction of the material can be completed;

[0041] Continuously press the wrench 502 so that the material is sucked into the piston chamber 301 and then discharged, and the work of the spray gun can be completed. During this process, when the material is extracted, the communication groove 303 between the sealing seat 402 and the annular seat 302 is closed, and the material in the spray gun magazine will not be in contact with the outside air. When the material is discharged, the channel between the valve core 403 and the straw sleeve 201 is closed, and the material in the spray gun magazine will not be affected, ensuring the storage of the material while realizing the continuous use of the spray gun.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fully plastic hand-held spray gun, comprising a threaded base (1) and a spray gun body (3), characterized in that: The spray gun body (3) is arranged at the top of the threaded base (1). Inside the top of the threaded base (1), a suction pipe seat (2) is fixedly arranged. In the middle of the spray gun body (3), a piston chamber (301) is fixedly arranged. At the bottom end of the piston chamber (301), an annular seat (302) is fixedly arranged. One end of the inner side wall of the piston chamber (301) is penetrated and provided with a communication groove (303), and the bottom end of the communication groove (303) extends into the inside of the annular seat (302). A valve body (4) is arranged between the suction pipe seat (2) and the annular seat (302). The valve body (4) is arranged in a boss-shaped structure, and an arc surface (401) is arranged in the middle of the valve body (4). At the top end of the valve body (4), an annular sealing seat (402) is fixedly arranged. The top end of the sealing seat (402) is inserted into the inside of the annular seat (302), and an upper and lower interference connection is formed between the sealing seat (402) and the annular seat (302). At the overlapping position of the bottom end of the outer side wall of the annular seat (302) and the valve body (4), a diversion groove (304) is opened. In the middle of the top end of the valve body (4), a valve core (403) is arranged. In the middle of the upper surface of the suction pipe seat (2), a suction pipe sleeve (201) is fixedly arranged. At the middle of the top end of the valve body (4), an annular rib (404) is fixedly arranged, and an interference connection is formed between the rib (404) and the top end of the suction pipe sleeve (201). The bottom end of the valve core (403) is inserted into the top pipe of the suction pipe sleeve (201). At the bottom end of the suction pipe sleeve (201), a diversion suction pipe (202) is fixedly arranged. Inside the spray gun body (3), a discharge groove (305) is opened, and one end of the discharge groove (305) extends to the outside of the annular seat (302).

2. The all-plastic hand-held spray gun according to claim 1, wherein: At the bottom end of the spray gun body (3), an annular groove (31) corresponding to the suction pipe seat (2) is opened, and a snap connection is formed between the annular groove (31) and the suction pipe seat (2).

3. The all-plastic hand-held spray gun according to claim 1, characterized in that: Inside the piston chamber (301), a piston (5) is arranged. At one end of the piston (5), a piston rod (501) is fixedly arranged. At one end of the piston rod (501), a wrench (502) is movably arranged through a pin shaft, and the top end of the wrench (502) is movably arranged through a pin shaft at the middle part of the outside of the spray gun body (3).

4. The all-plastic hand-held spray gun according to claim 3, wherein: At the inner top end of the wrench (502), a transmission rod (503) is clamped and arranged. At both ends of the transmission rod (503), "C"-shaped first elastic blocks (504) are fixedly arranged. At the outer bottom end of the spray gun body (3), protruding platforms (505) are fixedly arranged. The bottom end of the first elastic block (504) is clamped and arranged on the upper surface of the protruding platform (505). At the bottom end of one side where the two first elastic blocks (504) are close to each other, a "U"-shaped second elastic block (506) is fixedly arranged, and the bottom end of the second elastic block (506) is attached to the upper surface of the protruding platform (505).

5. The all-plastic hand-held spray gun according to claim 1, characterized in that: A gun cover (6) is fixedly arranged on the outer side of the spray gun body (3), and a nozzle (601) is fixedly arranged at one end of the gun cover (6), and the nozzle (601) is arranged at one end of the discharge groove (305).

6. The full-plastic hand-held spray gun according to claim 1, characterized in that: The shape of the valve core (403) is set to be one of a disc shape, a column shape or an inverted boss shape.

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