Hand buckle spray gun with built-in spring

Abstract

The utility model discloses a hand-buckled spray gun with a built-in spring, which relates to the technical field of spray guns and comprises a gun body, a piston cavity is fixedly arranged in the middle of the gun body, a plastic spring is arranged at one end in the piston cavity, and a plurality of liquid drainage grooves are formed in one end of the inner side wall of the plastic spring in a surrounding manner. A plurality of reinforcing ribs are fixedly arranged at one end of the outer side wall of the plastic spring, and the reinforcing ribs and the liquid drainage grooves are arranged in a staggered mode. The piston cavity is formed in the middle of the gun body, the plastic spring is arranged in the piston cavity and is of a boss-shaped structure, the piston is arranged at one end of the piston cavity, and the piston can extrude the middle of the plastic spring in the reciprocating motion process, so that the plastic spring collapses and deforms; the plastic spring can push the piston in the reset deformation process so as to drive the piston, the plastic spring is of a built-in structure, and compared with a metal spring in the traditional technology, the plastic spring has the advantages of being convenient to install and not prone to rusting.

Description

Technical Field

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

[0002] A hand-held spray gun is a device that uses the rapid release of liquid or compressed air as power. Hand-held spray guns 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 CN215884730U. It includes a pump body, a bottle cap, a valve rod, a nozzle, 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 nozzle; the nozzle 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 formed 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 formed on the contact block, and the atomization channel is communicated with the liquid outlet hole; a liquid guide groove is formed on the outer peripheral surface of the inner plug column, and the liquid guide groove is always communicated with the atomization channel. This application has the effect that the operation of switching the water spraying and atomizing states is relatively convenient.

[0004] The above technical solution has some problems in practical applications. The above technical solution realizes the driving and reset of the valve rod by using a spring, but the metal spring is prone to problems such as rusting during use, and the metal spring is not convenient for installation, which is not conducive to the assembly production and disassembly and maintenance of the product.

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

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

[0007] To achieve the above object, the present utility model provides the following technical solution: A hand-held spray gun with a built-in spring, comprising a gun body. A piston chamber is fixedly arranged in the middle of the gun body. A plastic spring is arranged at one end inside the piston chamber. The plastic spring is arranged in a hollow boss-shaped structure. A plurality of liquid discharge grooves are circumferentially formed at one end of the inner side wall of the plastic spring. A plurality of reinforcing ribs are fixedly arranged at one end of the outer side wall of the plastic spring, and the plurality of reinforcing ribs and the plurality of liquid discharge grooves are arranged in an alternating manner. A support ring is fixedly arranged at one end of the plastic spring, and the support ring is in fit with the inner wall of one end of the piston chamber. A groove is formed at the other end of the plastic spring. A piston is arranged inside the piston chamber, and the piston is arranged outside the plastic spring. A push rod is fixedly arranged in the middle of the inner side wall of the piston, and the push rod corresponds to the groove. A piston rod is fixedly arranged in the middle of the outer side wall of the piston. One end of the piston rod is movably arranged with a wrench through a pin shaft. A connecting pin is fixedly arranged at the top end of the wrench, and the connecting pin is clamped and arranged at the top end of the gun body.

[0008] Preferably, a diversion groove is formed at one end of the inner side wall of the piston chamber. A sealing sleeve is fixedly arranged at the notch of the diversion groove. A through groove is formed at the bottom end of the outer side wall of the sealing sleeve.

[0009] Preferably, a sealing valve is arranged below the sealing sleeve. An annular sleeve is fixedly arranged at the top end of the sealing valve, and the annular sleeve is inserted into the inside of the sealing sleeve and is in interference fit with the sealing sleeve.

[0010] Preferably, a suction pipe seat is arranged at the bottom end of the sealing valve, and the suction pipe seat is clamped and arranged at the bottom end of the gun body.

[0011] Preferably, a suction pipe is fixedly arranged in the middle of the upper surface of the suction pipe seat. The suction pipe is inserted into the middle of the sealing valve. A valve core is fixedly arranged inside the annular sleeve, and the valve core is arranged above the suction pipe. An annular rib is fixedly arranged at the bottom end inside the annular sleeve, and the annular rib is in interference connection with the top end of the outer side wall of the suction pipe.

[0012] Preferably, a liquid inlet pipe is fixedly arranged at the bottom end of the suction pipe. A threaded seat is fixedly arranged outside the suction pipe seat.

[0013] The technical effects and advantages of the present utility model:

[0014] 1. By arranging a piston chamber in the middle of the gun body and a plastic spring inside the piston chamber, and setting the plastic spring in a boss-shaped structure, and arranging a piston at one end of the piston chamber. During the reciprocating movement of the piston, the middle of the plastic spring can be squeezed, causing the plastic spring to collapse and deform. And during the reset deformation process of the plastic spring, the piston can be pushed to realize the driving of the piston. The plastic spring adopts an internal structure, which has the advantages of convenient installation and not easy to rust compared with the metal spring in the traditional technology.

[0015] 2. The utility model opens a plurality of liquid discharge grooves at one end of the plastic spring. The arrangement of the liquid discharge grooves ensures the flow of materials between the plastic spring and the piston cavity, so as to avoid the plastic spring affecting the extraction and discharge of materials. By arranging a reinforcing rib at the outer end of the plastic spring, the arrangement of the reinforcing rib can limit the deformation range of the material spring, so as to avoid excessive collapse of the plastic spring and inability to reset, thus ensuring the normal use of the spray gun. 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 an exploded view of the overall structure of the utility model.

[0018] Figure 3 It is a schematic cross-sectional view of the plastic spring structure of the utility model.

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

[0020] Figure 5 For the utility model Figure 4 Schematic enlarged view of the structure at A in the middle.

[0021] In the figure: 1. Gun body; 2. Piston cavity; 21. Diversion groove; 22. Sealing sleeve; 23. Through groove; 24. Sealing valve; 25. Annular sleeve; 26. Valve core; 27. Annular rib; 3. Plastic spring; 31. Liquid discharge groove; 32. Reinforcing rib; 33. Support ring; 34. Groove; 4. Piston; 41. Thumb rod; 42. Piston rod; 43. Wrench; 44. Connecting pin; 5. Straw seat; 51. Straw; 52. Liquid inlet pipe; 6. Threaded seat. Detailed Implementation Modes

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] The present utility model provides a hand-held spray gun with a built-in spring as Figures 1-5 shown, which includes a gun body 1. A piston cavity 2 is fixedly arranged in the middle of the gun body 1. One end inside the piston cavity 2 is provided with a plastic spring 3. The plastic spring 3 is arranged as a hollow boss-shaped structure;

[0024] Specifically, a plurality of liquid discharge grooves 31 are circumferentially formed at one end of the inner side wall of the plastic spring 3. The arrangement of the liquid discharge grooves 31 ensures that the material can flow between the plastic spring 3 and the piston chamber 2. At one end of the outer side wall of the plastic spring 3, a plurality of reinforcing ribs 32 are fixedly arranged, and the plurality of reinforcing ribs 32 and the plurality of liquid discharge grooves 31 are arranged in an alternating manner. The reinforcing ribs 32 can limit the deformation range of the plastic spring 3 to prevent excessive deformation and inability to recover. At one end of the plastic spring 3, a support ring 33 is fixedly arranged, and the support ring 33 is in contact with the inner wall of one end of the piston chamber 2. At the other end of the plastic spring 3, a groove 34 is formed. A piston 4 is arranged inside the piston chamber 2, and the piston 4 is arranged outside the plastic spring 3. In the middle of the inner side wall of the piston 4, a push rod 41 is fixedly arranged, and the push rod 41 corresponds to the groove 34. The cooperation between the push rod 41 and the groove 34 ensures that the plastic spring 3 can collapse and deform when being squeezed;

[0025] More specifically, in the middle of the outer side wall of the piston 4, a piston rod 42 is fixedly arranged. One end of the piston rod 42 is movably provided with a wrench 43 through a pin shaft. At the top end of the wrench 43, a connecting pin 44 is fixedly arranged, and the connecting pin 44 is clamped at the top end of the gun body 1. The arrangement of the connecting pin 44 enables the wrench 43 to move outside the gun body 1;

[0026] Moreover, at one end of the inner side wall of the piston chamber 2, a diversion groove 21 is formed. At the notch of the diversion groove 21, a sealing sleeve 22 is fixedly arranged. At the bottom end of the outer side wall of the sealing sleeve 22, a through groove 23 is formed. Below the sealing sleeve 22, a sealing valve 24 is arranged. At the top end of the sealing valve 24, an annular sleeve 25 is fixedly arranged, and the annular sleeve 25 is inserted into the inside of the sealing sleeve 22 and is in interference fit with the sealing sleeve 22;

[0027] Furthermore, at the bottom end of the sealing valve 24, a straw seat 5 is arranged, and the straw seat 5 is clamped at the bottom end of the gun body 1. In the middle of the upper surface of the straw seat 5, a straw 51 is fixedly arranged. The straw 51 is inserted into the middle of the sealing valve 24. Inside the annular sleeve 25, a valve core 26 is fixedly arranged, and the valve core 26 is arranged above the straw 51. The cooperation between the valve core 26 and the straw 51 can seal the material bin during the discharge of the material. At the bottom end inside the annular sleeve 25, an annular rib 27 is fixedly arranged, and the annular rib 27 is in interference connection with the top end of the outer side wall of the straw 51. The arrangement of the annular rib 27 can improve the sealing effect between the straw 51 and the annular sleeve 25;

[0028] Moreover, at the bottom end of the straw 51, a liquid inlet pipe 52 is fixedly arranged. Outside the straw seat 5, a threaded seat 6 is fixedly arranged, and the threaded seat 6 is used to fix the spray gun on the material bin.

[0029] The working principle of the present utility model:

[0030] When the device is in use, when the wrench 43 is pressed, the wrench 43 drives the piston 4 through the piston rod 42. The piston 4 moves inside the piston chamber 2. The piston 4 squeezes the plastic spring 3 through the ejector rod 41, causing the plastic spring 3 to collapse and deform. After the wrench 43 is released, the plastic spring 3 recovers its deformation, and the plastic spring 3 pushes the piston 4 to move, so that the piston 4 returns to its original position to realize the drive of the piston 4;

[0031] During the inward movement of the piston 4, the air inside the piston chamber 2 is compressed. The compressed air enters into the sealing sleeve 22 and the annular sleeve 25 through the flow guide groove 21, causing the sealing sleeve 22 and the annular sleeve 25 to deform outwards until the annular sleeve 25 coincides with the through groove 23. At this time, the compressed air is discharged through the through groove 23. After the compressed air is discharged, the annular sleeve 25 and the sealing sleeve 22 recover their deformation. During this process, the valve core 26 is pressed against the top end of the suction pipe 51 under the action of the compressed air to realize the sealing of the spray gun bin;

[0032] During the outward movement of the piston 4, a negative pressure is formed inside the piston chamber 2. At this time, the valve core 26 moves upwards under the action of the negative pressure, and the valve core 26 is separated from the suction pipe 51. The material is extracted through the suction pipe 51 to between the sealing sleeve 22 and the annular sleeve 25, and then enters the piston chamber 2 through the flow guide groove 21. At this time, the extraction of the material can be realized;

[0033] Press the wrench 43 cyclically so that the material is extracted into the piston chamber 2 and then discharged, and the ejection of the material can be realized.

[0034] 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 recorded in the foregoing embodiments, or perform equivalent replacements on 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 hand trigger spray gun with a built-in spring, comprising a gun body (1), characterized in that: A piston chamber (2) is fixedly provided in the middle of the gun body (1), a plastic spring (3) is provided at one end of the piston chamber (2), the plastic spring (3) being arranged in a hollow boss-shaped structure, a plurality of drainage grooves (31) are arranged around one end of the inner wall of the plastic spring (3), a plurality of reinforcing ribs (32) are fixedly provided at one end of the outer wall of the plastic spring (3), and the plurality of reinforcing ribs (32) and the plurality of drainage grooves (31) are arranged in a staggered manner, a support ring (33) is fixedly provided at one end of the plastic spring (3), and the support ring (33) is in contact with the inner wall of one end of the piston chamber (2), and the The other end of the plastic spring (3) is provided with a groove (34); a piston (4) is arranged inside the piston cavity (2), and the piston (4) is arranged outside the plastic spring (3); a push rod (41) is fixedly arranged in the middle of the inner wall of the piston (4), and the push rod (41) corresponds to the groove (34); a piston rod (42) is fixedly arranged in the middle of the outer wall of the piston (4); a wrench (43) is movably arranged at one end of the piston rod (42) via a pin shaft; a connecting pin (44) is fixedly arranged at the top end of the wrench (43), and the connecting pin (44) is clamped and arranged at the top end of the gun body (1).

2. A spring-loaded hand trigger spray gun according to claim 1, characterized in that: A guide groove (21) is provided at one end of the inner wall of the piston chamber (2), a sealing sleeve (22) is fixedly provided at the notch of the guide groove (21), and a through groove (23) is provided at the bottom end of the outer wall of the sealing sleeve (22).

3. A spring-loaded hand trigger spray gun according to claim 2, characterized in that: A sealing valve (24) is provided below the sealing sleeve (22), an annular sleeve (25) is fixedly provided on the top of the sealing valve (24), and the annular sleeve (25) is inserted into the interior of the sealing sleeve (22) and is interference-fitted with the sealing sleeve (22).

4. A spring-loaded hand trigger spray gun according to claim 3, characterized in that: A straw seat (5) is provided at the bottom end of the sealing valve (24), and the straw seat (5) is clamped and arranged at the bottom end of the gun body (1).

5. The hand trigger spray gun with built-in spring according to claim 4, characterized in that: A straw (51) is fixedly arranged in the middle of the upper surface of the straw holder (5), and the straw (51) is inserted and arranged in the middle of the sealing valve (24). A valve core (26) is fixedly arranged inside the annular sleeve (25), and the valve core (26) is arranged above the straw (51). An annular convex rib (27) is fixedly arranged at the bottom end of the annular sleeve (25), and the annular convex rib (27) is interference-connected with the top end of the outer wall of the straw (51).

6. A spring-loaded hand trigger spray gun according to claim 5, characterized in that: A liquid inlet pipe (52) is fixedly provided at the bottom end of the straw (51), and a threaded seat (6) is fixedly provided on the outer side of the straw seat (5).

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