A hand trigger sprayer

Abstract

The present invention relates to a hand-trigger sprayer, comprising a shell, a main body, an atomizing nozzle, a piston, a wrench, an elastic member, and a valve plug. The valve plug is arranged in a vertical part of an L-shaped liquid-conducting channel so as to be movable up and down. The vertical part has a first step that can abut against the top wall of the valve plug to limit its position. The outer peripheral wall of the upper part of the valve plug has a first elastic valve sheet that is in close contact with the inner wall of the vertical part above the opening, and the outer peripheral wall of the lower part has a second elastic valve sheet that is in close contact with the inner wall of the vertical part below the opening. The present invention uses a vertically arranged valve plug to seal the liquid-conducting channel. When initially used, the first elastic valve sheet is first squeezed to discharge the air in the accommodating chamber, and then the second elastic valve sheet is squeezed to suck the liquid into the accommodating chamber. Finally, the first elastic valve sheet is squeezed to discharge the liquid in the accommodating chamber. The valve plug of the present invention has good sealing effect and rapid reset, which is conducive to reducing negative pressure loss and improving spray fineness.

Description

Technical Field

[0001] The invention relates to a hand trigger sprayer. Background Art

[0002] Some existing bottle sprayers basically use metal springs as power, glass marbles as water distribution devices, and head cap rubber as water supply, causing liquid to corrode the above three accessories, indirectly causing slight harm to the human body. They are not environmentally friendly and healthy to use. During production, the cost is also high, there are many assembly processes, and the production efficiency is low. They are difficult to recycle and cannot be reused.

[0003] In order to solve the above problems, the Chinese invention patent "A New Energy-saving and Environmentally Friendly Hand-trigger Sprayer" (application number: CN201120153940.6) with authorization announcement number CN202037096U discloses a structure, which includes a shell composed of a large cover, an upper cover and a lower cover, a spray gun body is installed in the shell, the spray gun body is connected to a suction pipe, a piston is installed on the large cover, and a wrench is connected to the piston through a spring; a gasket is arranged in the large cover; and a head cap is connected to the end of the spray gun body. The hand-trigger sprayer has low production cost, is easy to use, and is not easy to corrode.

[0004] However, since the valve plug in the above-mentioned sprayer is placed horizontally at the upper end of the straw, its sealing effect is unstable, resulting in poor fineness of the water mist sprayed by the sprayer, and there may be water droplets, which affects the user experience. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a hand-button sprayer with good sealing effect and fine water mist in view of the current status of the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a hand trigger sprayer, comprising

[0007] case;

[0008] A main body, constrained in the shell, having an L-shaped liquid-conducting channel, wherein the transverse portion of the L-shaped liquid-conducting channel is located at the top, and the vertical portion is located at the bottom, a receiving cavity is provided on one side of the vertical portion of the L-shaped liquid-conducting channel, and an opening communicating with the receiving cavity is provided on the side wall of the vertical portion of the L-shaped liquid-conducting channel;

[0009] an atomizing nozzle, arranged at the end of the lateral portion of the L-shaped liquid guiding channel;

[0010] A piston is reciprocatingly disposed in the accommodating cavity and forms a closed inner cavity in the accommodating cavity;

[0011] A wrench, provided on one side of the piston, for pushing the piston into the accommodating cavity;

[0012] An elastic member connected to the wrench to keep the piston moving toward the outer end of the accommodating chamber;

[0013] It is characterized by: it also includes

[0014] A valve plug is constrained in a vertical portion of the L-shaped liquid guiding channel, the vertical portion having a first step that can abut against a top wall of the valve plug to limit its position; the outer peripheral wall of the upper portion of the valve plug has a first elastic valve sheet that is in close contact with the inner wall of the vertical portion above the opening, and the outer peripheral wall of the lower portion has a second elastic valve sheet that is in close contact with the inner wall of the vertical portion below the opening; and

[0015] The cover has an inserting portion inserted into the lower end of the vertical part of the L-shaped liquid guiding channel, the lower end of the inserting portion is connected to a straw, and the inserting portion is provided with a liquid outlet for liquid to enter the vertical part of the L-shaped liquid guiding channel.

[0016] In the above solution, the accommodating chamber is arranged transversely on one side of the vertical portion of the L-shaped liquid guiding channel and has an external port, and the piston is arranged through the external port.

[0017] Preferably, the outer peripheral wall of the piston is provided with a first elastic valve ring and a second elastic valve ring arranged at intervals in the axial direction, and the first elastic valve ring and the second elastic valve ring are both in close contact with the inner wall of the accommodating chamber, and the bottom wall of the accommodating chamber is provided with an air vent that can allow external air to be sucked back into the container when the first elastic valve ring and the second elastic valve ring are both located in the accommodating chamber. A limit retaining ring that can abut against the elastic valve ring on the outside is also provided on the inner wall of the middle part of the accommodating chamber. The above structure facilitates sealing the accommodating chamber, realizes the adjustment of the air pressure in the accommodating chamber, and thus realizes the suction and discharge of liquid.

[0018] In order to facilitate assembly, a screw ring for connecting with a container is installed at the bottom of the main body, and the air vent is arranged corresponding to the inner side of the screw ring.

[0019] In the present invention, the top of the wrench is rotatably connected to the main body, the elastic member is an arc-shaped spring strip integrally formed on the top of the wrench, the arc-shaped spring strip is arched upward and its upper part passes through the housing, and the upper end of the arc-shaped spring strip abuts against the top wall of the housing. The above structure is adopted to realize the reset of the piston.

[0020] In order to facilitate connection, a connecting seat is provided at the outer end of the piston, and the middle part of the wrench is rotatably connected to the connecting seat through a rotating shaft.

[0021] Preferably, the connecting seat and the piston are integrally formed or the two are split structures. When the connecting seat and the piston are integrally formed, the first end of the rotating shaft is integrally formed on the connecting seat, and the second end of the rotating shaft is rotatably connected to the wrench; when the connecting seat and the piston are split structures, the first end of the rotating shaft is rotatably connected to the connecting seat, and the second end of the rotating shaft is rotatably connected to the wrench or is integrally formed on the wrench.

[0022] Preferably, the second end of the shaft is integrally formed with the wrench, and the connecting seat is provided with a tapered groove that can cooperate with the outer wall of the shaft during the rotation of the shaft. This structure is conducive to improving the operational stability and sensitivity of the wrench and the connecting seat during the rotation state.

[0023] Preferably, there is a gap between the outer peripheral wall of the valve plug and the inner wall of the vertical part of the L-shaped liquid guiding channel, the upper end of the plug-in portion is inserted into the lower end of the valve plug and limits the valve plug, and the plug-in portion is provided with a liquid outlet channel located below the valve plug, which is horizontally through and connected to the straw, and the outer end of the liquid outlet channel constitutes the liquid outlet. This structure mainly constrains the position of the valve plug through the plug-in portion, and is easy to assemble.

[0024] Preferably, a radially extending retaining ring is provided at the lower edge of the valve plug, and correspondingly, a second step that can abut against the retaining ring to limit its position is provided in the vertical portion of the L-shaped liquid guiding channel, and the upper end of the plug-in portion abuts against the bottom of the retaining ring; the plug-in portion has a liquid outlet channel that runs through the top and bottom, the liquid outlet is provided at the top edge of the plug-in portion, and the retaining ring has a liquid outlet. This structure mainly limits the valve plug by the pressure of the plug-in portion and the second step, which is not only convenient for assembly, but also helps to improve the smoothness of liquid circulation and the fineness of the spray. The lower part of the above-mentioned plug-in portion is tightly fitted with the inner wall of the vertical portion of the L-shaped liquid guiding channel,

[0025] There is a gap between the upper part of the above-mentioned plug-in part and the inner wall of the vertical part of the L-shaped liquid guiding channel. The outer peripheral wall of the upper part of the plug-in part, the inner wall of the vertical part of the L-shaped liquid guiding channel and the retaining ring together enclose a liquid guiding cavity. The interior of the valve plug is hollow to form an inner cavity connected to the liquid outlet channel. The liquid ascending from the suction tube fills the inner cavity, first enters the liquid guiding cavity through the liquid outlet, and then enters the L-shaped liquid guiding channel at the valve plug through the liquid outlet, which is beneficial to avoid negative pressure loss and improve the fineness of the spray.

[0026] Compared with the prior art, the advantages of the present invention are: the present invention adopts a vertically arranged valve plug to seal the liquid guiding channel. During initial use, the first elastic valve piece is squeezed to discharge the air in the accommodating chamber, and then the second elastic valve piece is squeezed to suck the liquid into the accommodating chamber, and finally the first elastic valve piece is squeezed to discharge the liquid in the accommodating chamber. The valve plug of the present invention has good sealing effect and rapid resetting, which is beneficial to reducing negative pressure loss and improving spray fineness. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0028] Figure 2 for Figure 1 A cross-sectional view of

[0029] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0030] Figure 4 Figure 3 A partial enlarged view of

[0031] Figure 5 Schematic diagram of the matching structure of the valve plug and the blind cover in Example 2 of the present invention;

[0032] Figure 6 This is a schematic diagram of the matching structure of the connecting seat, the piston and the wrench in Example 3 of the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the accompanying drawings.

[0034] Embodiment 1:

[0035] like Figure 1 , 2 As shown, the trigger sprayer of this embodiment includes a housing 1, a main body 2, an atomizing nozzle 3, a piston 4, a wrench 5, an elastic member 50, a valve plug 6, a cover 7 and a screw ring 8.

[0036] The above-mentioned main body 2 is arranged in the shell body 1, and the main body 2 has an L-shaped liquid guiding channel 21, and the horizontal part 211 of the L-shaped liquid guiding channel 21 is located at the top, and the vertical part 212 is located at the bottom. A receiving cavity 213 is arranged on one side of the vertical part 212 of the L-shaped liquid guiding channel 21, and an opening 214 connected to the receiving cavity 213 is opened on the side wall of the vertical part 212 of the L-shaped liquid guiding channel 21, and the opening 214 is arranged corresponding to the upper part of the receiving cavity 213 and close to the inner top wall of the receiving cavity 213.

[0037] The above-mentioned atomizing nozzle 3 is arranged at the end of the transverse portion 211 of the L-shaped liquid guiding channel 21. The specific structure of the atomizing nozzle 3 is an existing mature technology and will not be described in detail here.

[0038] The above-mentioned accommodating chamber 213 is arranged transversely on one side of the vertical portion 212 of the L-shaped liquid guiding channel 21 and has an outer port, through which the piston 4 is arranged. The piston 4 passes through the outer port and is arranged in the accommodating chamber 213 so as to be reciprocatingly movable, so that the accommodating chamber 213 forms a closed inner chamber. The wrench 5 is arranged on one side of the piston 4 and is used to push the piston 4 into the accommodating chamber 213. The elastic member 50 is connected to the wrench 5 so that the piston 4 always maintains a tendency to move toward the outer end of the accommodating chamber 213.

[0039] The valve plug 6 of this embodiment is movably disposed in the vertical portion 212 of the L-shaped liquid-conducting channel 21, and the vertical portion 212 has a first step 215 that can abut against the top wall of the valve plug 6 to limit its position. The upper peripheral wall of the valve plug 6 has a first elastic valve plate 61 that is in close contact with the inner wall of the vertical portion 212 above the opening 214, and the lower peripheral wall has a second elastic valve plate 62 that is in close contact with the inner wall of the vertical portion 212 below the opening 214. The cover 7 has a plug-in portion 71 inserted into the lower end of the vertical portion 212 of the L-shaped liquid-conducting channel 21, and the lower end of the plug-in portion 71 is connected to the straw 9, and the plug-in portion 71 is provided with a liquid outlet 710 for liquid to enter the vertical portion 212 of the L-shaped liquid-conducting channel. Specifically, there is a gap between the outer peripheral wall of the valve plug 6 and the inner wall of the vertical portion 212 of the L-shaped liquid guiding channel, the upper end of the plug-in portion 71 is inserted into the lower end of the valve plug 6, and the outer periphery of the upper end of the plug-in portion 71 has a convex rib for limiting the position of the valve plug 6. The plug-in portion 71 is provided with a liquid outlet channel 72 located below the valve plug 6, passing through horizontally and connected to the straw 9, and the outer end of the liquid outlet channel 72 constitutes the above-mentioned liquid outlet 710. This structure mainly constrains the position of the valve plug 6 through the plug-in portion 71, and is easy to assemble. The spiral ring 8 is connected to the bottom of the main body 1 for connecting with the container.

[0040] The outer peripheral wall of the piston 4 is provided with a first elastic valve ring 41 and a second elastic valve ring 42 arranged at intervals in the axial direction. The first elastic valve ring 41 and the second elastic valve ring 42 are both in close contact with the inner wall of the accommodating chamber 213. The bottom wall of the accommodating chamber 213 is provided with an air vent 216 for allowing external air to be sucked back into the container when the first elastic valve ring 41 and the second elastic valve ring 52 are both located in the accommodating chamber 213. The air vent 216 is arranged corresponding to the inner side of the spiral coil 8. A limit retaining ring 217 that can abut against the elastic valve ring on the outside is also provided on the inner wall of the middle part of the accommodating chamber 213. The above structure facilitates sealing the accommodating chamber 213, realizes the adjustment of the air pressure in the accommodating chamber 213, and thus realizes the suction and discharge of liquid.

[0041] The top of the wrench 5 is rotatably connected to the main body 2, and the elastic member 51 is an arc-shaped elastic strip integrally formed on the top of the wrench 5. The arc-shaped elastic strip is arched upward and its upper part passes through the housing 1, and the upper end of the arc-shaped elastic strip abuts against the top wall of the housing 1. The above structure is adopted to realize the reset of the piston.

[0042] In order to facilitate connection, a connecting seat 40 is provided at the outer end of the piston 4. The connecting seat 40 and the piston 4 are separate structures, and are convenient for injection molding. When assembled, the two are connected together by plugging. The middle part of the wrench 5 is rotatably connected to the connecting seat 40 through a rotating shaft 52. The rotating shaft 52 and the wrench 5 are integrally formed. The first end of the rotating shaft 52 is a spherical structure. The connecting seat 40 is provided with a groove that can rotate with the spherical structure of the rotating shaft 52. The groove is a conical groove 401. When the rotating shaft 52 rotates, it cooperates with the spherical structure of the rotating shaft 52, which is conducive to improving the operational stability between the wrench 5 and the connecting seat 40 in the rotating state.

[0043] When using the sprayer of this embodiment, the wrench 5 is pressed to make the air in the accommodating chamber 213 compress the first elastic valve piece 61 of the valve plug 6 and discharge it through the liquid guiding channel 21. At this time, negative pressure is formed in the accommodating chamber 213; the wrench 5 is released, and the solution in the container enters the vertical portion 212 of the liquid guiding channel 21 through the straw 9 and the liquid outlet channel 72, compressing the second elastic valve piece 62 and entering the accommodating chamber 213 through the opening 214; the wrench 5 is pressed, and the piston 4 squeezes the liquid in the accommodating chamber 213, so that the part of the liquid passes through the opening 214 and then squeezes the first elastic valve piece 61 of the valve plug 6 and then discharges it through the liquid guiding channel 21, and forms a spray after passing through the atomizing nozzle 3; the outside air is replenished into the container through the air vent 216.

[0044] Embodiment 2:

[0045] The difference between this embodiment and embodiment 1 is that the assembly method of the valve plug and the L-shaped liquid guiding channel is different.

[0046] Specifically, Figure 3 , 4 As shown in Figure 5, a radially extending retaining ring 63a is provided at the lower edge of the valve plug 6a. Correspondingly, a second step 218a that can abut against the retaining ring 63a to limit its position is provided in the vertical portion 212a of the L-shaped liquid-conducting channel 21a. The upper end of the plug-in portion 71a abuts against the bottom of the retaining ring 63a. The plug-in portion 71a has a liquid outlet channel 72a that runs through from top to bottom. The liquid outlet 710a is provided at the top edge of the plug-in portion 71a, and the retaining ring 63a has a liquid outlet 631a. This structure mainly limits the valve plug 6a by the pressure of the plug-in portion 71a and the second step 218a, which is not only convenient for assembly, but also conducive to improving the smoothness of liquid flow and the fineness of spray.

[0047] Specifically, the lower part of the above-mentioned plug-in part 71a is tightly fitted with the inner wall of the vertical part 212a of the L-shaped liquid guiding channel, and there is a gap between the upper part of the above-mentioned plug-in part 71a and the inner wall of the vertical part 212a of the L-shaped liquid guiding channel. The outer peripheral wall of the upper part of the plug-in part 71a, the inner wall of the vertical part 212a of the L-shaped liquid guiding channel, and the retaining ring 63a together enclose a liquid guiding cavity 630a. The interior of the valve plug 6a is hollow to form an inner cavity 64a connected to the liquid outlet channel 72a. The liquid ascending from the suction tube fills the inner cavity 64a, first enters the liquid guiding cavity 630a through the liquid outlet 710a, and then enters the L-shaped liquid guiding channel 21a at the valve plug 6a through the liquid outlet 631a. This structure can cooperate with the valve plug 6a structure to quickly complete the liquid discharge and close the liquid guiding channel, thereby avoiding negative pressure loss and improving the fineness of the spray.

[0048] Embodiment 3:

[0049] The difference between this embodiment and embodiment 1 is that the connection structure between the piston and the wrench is different.

[0050] Specifically, Figure 6 As shown, the connection seat 40b and the piston 4b are integrally formed, the first end of the rotating shaft 52b is integrally formed on the connection seat 40b, and the second end of the rotating shaft 52b is rotatably connected to the wrench 5b. The second end of the rotating shaft 52b is a spherical structure, and the wrench 5b has a corresponding ball groove.

[0051] Embodiment 4:

[0052] The difference between this embodiment and embodiment 1 is that the connection structure between the piston and the wrench is different.

[0053] Specifically, Figure 3 As shown, the connection seat 40c and the piston 4c are separate structures, the connection seat 40c is embedded at the outer end of the piston 4c, the first end of the rotating shaft 52c is rotatably connected to the connection seat 40c, and the second end of the rotating shaft 52c is rotatably connected to the wrench 5c. Both ends of the rotating shaft 52c have spherical structures, and the connection seat 40c and the wrench 5c have corresponding ball grooves.

Claims

1. A trigger sprayer, comprising: case; A main body, constrained in the shell, having an L-shaped liquid-conducting channel, wherein the transverse portion of the L-shaped liquid-conducting channel is located at the top, and the vertical portion is located at the bottom, a receiving cavity is provided on one side of the vertical portion of the L-shaped liquid-conducting channel, and an opening communicating with the receiving cavity is provided on the side wall of the vertical portion of the L-shaped liquid-conducting channel; an atomizing nozzle, arranged at the end of the lateral portion of the L-shaped liquid guiding channel; A piston is reciprocatingly disposed in the accommodating cavity and forms a closed inner cavity in the accommodating cavity; A wrench, provided on one side of the piston, for pushing the piston into the accommodating cavity; An elastic member connected to the wrench to keep the piston moving toward the outer end of the accommodating chamber; Features: Also includes A valve plug is constrained in a vertical portion of the L-shaped liquid guiding channel, the vertical portion having a first step that can abut against a top wall of the valve plug to limit its position; the outer peripheral wall of the upper portion of the valve plug has a first elastic valve sheet that is in close contact with the inner wall of the vertical portion above the opening, and the outer peripheral wall of the lower portion has a second elastic valve sheet that is in close contact with the inner wall of the vertical portion below the opening; and A cover having an inserting portion inserted into the lower end of the vertical portion of the L-shaped liquid-conducting channel, a straw being connected to the lower end of the inserting portion, and a liquid outlet for liquid to enter the vertical portion of the L-shaped liquid-conducting channel being formed on the inserting portion; There is a gap between the outer peripheral wall of the valve plug and the inner wall of the vertical part of the L-shaped liquid guiding channel, the upper end of the plug-in portion is inserted into the lower end of the valve plug and limits the valve plug, and the plug-in portion is provided with a liquid outlet channel located below the valve plug, passing through horizontally and connected to the straw, and the outer end of the liquid outlet channel constitutes the liquid outlet; A radially extending retaining ring is arranged at the lower edge of the valve plug, and correspondingly, a second step which can abut against the retaining ring to limit its position is arranged in the vertical portion of the L-shaped liquid guiding channel, and the upper end of the plug-in part abuts against the bottom of the retaining ring; the plug-in part is provided with a liquid outlet channel which passes through from top to bottom, the liquid outlet is opened at the top edge of the plug-in part, and a liquid outlet is opened on the retaining ring.

2. The trigger sprayer according to claim 1, characterized in that: The accommodating cavity is arranged transversely on one side of the vertical portion of the L-shaped liquid guiding channel and has an external port, and the piston is arranged through the external port.

3. The trigger sprayer according to claim 2, characterized in that: A first elastic valve ring and a second elastic valve ring are arranged at intervals in the axial direction on the outer peripheral wall of the piston, and the first elastic valve ring and the second elastic valve ring are both tightly attached to the inner wall of the accommodating chamber. A vent is opened on the bottom wall of the accommodating chamber to allow external air to be sucked back into the container when the first elastic valve ring and the second elastic valve ring are both located in the accommodating chamber.

4. The trigger sprayer according to claim 3, characterized in that: A spiral ring for connecting with a container is installed at the bottom of the main body, and the air vent is arranged corresponding to the inner side of the spiral ring.

5. The trigger sprayer according to any one of claims 1 to 4, characterized in that: The top of the wrench is rotatably connected to the main body, and the elastic member is an arc-shaped elastic strip integrally formed on the top of the wrench. The arc-shaped elastic strip is arched upward and its upper part passes through the shell, and the upper end of the arc-shaped elastic strip abuts against the top wall of the shell.

6. The trigger sprayer according to claim 5, characterized in that: A connecting seat is arranged at the outer end of the piston, and the middle part of the wrench is rotatably connected to the connecting seat through a rotating shaft.

7. The trigger sprayer according to claim 6, characterized in that: The connecting seat and the piston are integrally formed or are split structures. When the connecting seat and the piston are integrally formed, the first end of the rotating shaft is integrally formed on the connecting seat, and the second end of the rotating shaft is rotatably connected to the wrench; when the connecting seat and the piston are split structures, the first end of the rotating shaft is rotatably connected to the connecting seat, and the second end of the rotating shaft is rotatably connected to the wrench or is integrally formed on the wrench.

8. The trigger sprayer according to claim 7, characterized in that: When the second end of the rotating shaft is integrally formed with the wrench, a conical groove is formed on the connecting seat which can cooperate with the outer wall of the rotating shaft during the rotation of the rotating shaft.

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