阅读说明：本技术 高压喷罐 (High-pressure spray tank ) 是由 陈汉梁 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种高压喷罐,其包含一罐体、一阀门组件、一软管、一配重件及一硬管；阀门组件设于罐体上并可使罐体内外连通；软管的两端分别连接阀门组件及配重件,配重件使软管的尾端自动朝地面方向的空间移动。硬管套设软管外,硬管的长度超过罐体高度的一半；软管向下突出于硬管；由此,罐体呈倾斜或水平时,配重件会使软管的尾端自动朝与高压喷罐中的液剂位置移动以保持浸没于液剂中,进而在倾斜或水平状态下仍可喷射液剂。硬管可适度限制软管的弯曲量,使贯穿于配重件的软管吸水口快速定位于液剂中。(The invention relates to a high-pressure spray tank, which comprises a tank body, a valve component, a hose, a counterweight and a hard pipe, wherein the tank body is provided with a water inlet and a water outlet; the valve component is arranged on the tank body and can communicate the inside and the outside of the tank body; the two ends of the hose are respectively connected with the valve component and the counterweight, and the counterweight enables the tail end of the hose to automatically move towards the space in the ground direction. The hard pipe is sleeved outside the hose, and the length of the hard pipe exceeds half of the height of the tank body; the hose protrudes downwards from the hard pipe; therefore, when the tank body is inclined or horizontal, the counterweight piece can enable the tail end of the hose to automatically move towards the position of the liquid in the high-pressure spray tank so as to keep the hose submerged in the liquid, and the liquid can be sprayed under the inclined or horizontal state. The hard tube can properly limit the bending amount of the hose, so that the water suction port of the hose penetrating through the weight member is quickly positioned in the liquid.)

1. A high pressure spray can, comprising:

a tank body which is a hollow body and is provided with an installation opening;

a valve component which is fixed on the mounting opening of the tank body in a sealing way and is provided with a liquid agent inlet and a liquid agent outlet, wherein the liquid agent inlet is positioned in the inner space of the tank body, and the liquid agent outlet is positioned outside the tank body; the liquid agent inlet is selectively communicated with the liquid agent outlet;

a suction pipe assembly having a head end and a tail end in communication with each other, the head end communicating with the liquid inlet of the valve assembly, the tail end extending toward and adjacent to the bottom of the tank; the straw assembly comprises:

a hose, the two opposite ends of which are respectively a valve end and a counterweight end, the valve end is communicated with the liquid agent inlet of the valve component, and the counterweight end extends towards the bottom of the tank body;

the balance weight piece is arranged at the balance weight end of the hose, and when the tank body is in shaking, the balance weight piece is pulled by gravity to enable the tail end of the suction pipe assembly to automatically move towards the ground;

the top end of the hard pipe is connected with the valve component, and the bottom end of the hard pipe extends towards the bottom of the tank body;

wherein, the hose passes through the hard tube, and the counterweight end of the hose protrudes downwards from the bottom end of the hard tube;

wherein, an exposed section is arranged between the hose protruding out of the bottom end of the hard pipe and the top of the counterweight.

2. The high pressure spray tank of claim 1, wherein the suction pipe assembly further comprises a counterweight compression ring surrounding a compression hole, the compression hole of the counterweight compression ring being sleeved on the counterweight end of the hose, whereby the hose is clamped and positioned in the compression hole of the counterweight compression ring.

3. The high pressure spray can of claim 2, wherein the weighted packing ring has

The groove penetrates through the annular wall of the counterweight packing ring, and a notch is formed on the periphery of an opening of a packing outlet of the counterweight packing ring, so that the function that the packing outlet can be elastically expanded is increased.

4. The high pressure spray can of claim 3, wherein the diameter of the ring wall of the compression bore of the weighted compression ring is tapered; when the counterweight packing ring is not sleeved on the hose, the diameter of the opening of the packing outlet of the packing hole of the counterweight packing ring is smaller than the outer diameter of the hose.

5. The high pressure spray can of claim 2, wherein:

the outer ring side of the counterweight packing ring is provided with an inner clamping part which is a ring groove;

an outer clamping part is formed on the side surface of an inner ring of the counterweight part and is a ring flange;

the outer clamping portion of the counterweight member is clamped with the inner clamping portion of the counterweight packing ring.

6. The high pressure spray canister of any one of claims 1-4, wherein the straw assembly further comprises a valve packing ring having a packing hole, the packing hole of the valve packing ring being sleeved outside the valve end of the hose, whereby the hose is clamped in the packing hole of the valve packing ring.

7. The high-pressure spray can of any one of claims 1 to 4, wherein:

the counterweight part is provided with a through hole;

the hose penetrates through the through hole of the weight part and is adjacent to the bottom of the tank body.

8. The high pressure spray can of any one of claims 1 to 4, wherein the weight member has a weight ring body and a buffer housing, the buffer housing being wrapped around the weight ring body.

9. The high pressure spray can of any one of claims 1 to 4, wherein the hose is made of polyethylene and has an inner diameter of 0.75 to 0.85 mm and an outer diameter of 1.40 to 1.55 mm.

10. The high pressure spray can of any one of claims 1 to 4, wherein the length of the rigid tube exceeds half of the height of the can body; the distance between the bottom end of the hard tube and the bottom of the tank body is defined as a movable distance, and the movable distance is smaller than or equal to the inner diameter of the tank body.

11. The high-pressure spray can of any one of claims 1 to 4, wherein an inner wall surface of the hard tube is disposed at a distance from an outer wall surface of the hose, and a difference between an inner diameter of the hard tube and an outer diameter of the hose is less than or equal to 1.4 mm.

Technical Field

The invention relates to a container capable of containing and spraying liquid of a product, in particular to a spray can which can be filled with the liquid and a propellant and can spray the liquid by the propellant.

Background

Referring to fig. 9 and 10, a high pressure spray can for spraying a liquid product, such as an insecticide spray can or a defense pepper spray can, has a can 91, a valve assembly 92, a suction pipe 93 and a spray head 94; the top end of the can body 91 is provided with a crimping opening; the valve assembly 92 is hermetically fixed on the curled opening of the can 91; the head 931 of the suction pipe 93 mounted in the tank 91 is in communication with the valve assembly 92, and the tail 932 is adjacent to the bottom of the tank 91; when the spray can is used, the liquid A and the propellant (such as compressed gas) filled in the can body 91, and the pressure formed by the propellant in the can body can push the liquid A to flow into the suction pipe 93 and is sprayed out by the spray head 94 after passing through the valve assembly 92.

The shape of the suction pipe 93 is known to be mostly one of two forms:

in the first form, the tail end 932 is close to the suction pipe 93 at the corner 911 where the can body is connected with the can bottom; the leading end 931 of the suction pipe 93 is disposed at the bottom end of the valve assembly 92, the bending direction of the trailing end 932 of the slightly curved suction pipe 93 is generally fixedly disposed at the same side as the spraying opening 941 of the spray head 94 at the top end of the spray can, and the water suction opening at the trailing end 932 of the suction pipe 93 is close to the corner 911 where the can body and the can bottom are connected, so that the water suction opening can be immersed and positioned in the liquid A in the can bottom.

When the hand-held spray can is used upright or when the liquid in the can body is only half or less of the volume and is inclined to the horizontal state, the water suction port at the tail end 932 in the can bottom or close to the corner 911 where the can body and the can bottom are connected can be immersed in the liquid A in the can, and the liquid A in the can be sprayed out when the spray head 94 is pressed.

Referring to fig. 11 to 12, however, when the volume of the liquid a in the tank is only half or less, and the nozzle 941 of the nozzle 94 at the top of the hand-held spray tank is tilted toward the ground in a reverse direction, or tilted toward the ground and horizontally turned left or right, the water suction opening at the tail end 932 of the suction pipe of the adjacent tank body is tilted toward the ground and simultaneously turned left or right, or tilted toward the ground in a reverse direction, so the liquid a in the tank cannot be submerged in the water suction opening of the suction pipe 93, and the tank body is usually made of opaque material, so the user cannot know the position of the water suction opening at the tail end 932 in the tank, and the liquid a in the tank cannot be sprayed when the nozzle 94 is pressed.

A second form, a straight tube type suction pipe 93A; referring to FIG. 13, a straight tubular suction pipe 93A is generally known in which a head end 931A is disposed at the bottom end of a valve component 92A, and a tail end 932A of the suction pipe 93A extends centrally within the tank and has a suction inlet near the bottom of the tank. When the hand-held spray can is used upright, the water suction port at the tail end 932A of the suction tube can be immersed in the liquid A in the can, and the liquid A in the can be sprayed out when the spray head 94A at the top end of the spray can is pressed.

Referring to fig. 14 to 16, when the volume of the liquid a in the tank is half or less, and the nozzle 941A of the nozzle 94A at the top of the hand-held spray tank is tilted toward the ground or tilted to a horizontal position, the liquid a in the tank cannot be sprayed out by pressing the nozzle 94A or pressing the trigger 971 of the spray gun 97 even though the liquid a remains in the tank because the suction port of the suction pipe 93A cannot be submerged in the liquid a in the tank.

Thus, the high pressure spray cans of the prior art need to be improved.

Disclosure of Invention

In view of the foregoing disadvantages and drawbacks of the prior art, the present invention provides a high pressure spraying tank, in which the tail end of the straw assembly is automatically pulled by gravity to move freely toward the ground, so as to ensure that the tail end of the straw assembly can suck and spray the liquid in the tank even when the tank is inclined in any direction or horizontal in any direction, even when the liquid capacity in the tank is only half or less.

In order to achieve the above object, the present invention provides a high pressure spray can, comprising:

a tank body which is a hollow body and is provided with an installation opening;

a valve component which is fixed on the mounting opening of the tank body in a sealing way and is provided with a liquid agent inlet and a liquid agent outlet, wherein the liquid agent inlet is positioned in the inner space of the tank body, and the liquid agent outlet is positioned outside the tank body; the liquid agent inlet is selectively communicated with the liquid agent outlet;

a suction pipe assembly having a head end and a tail end in communication with each other, the head end communicating with the liquid inlet of the valve assembly, the tail end extending toward and adjacent to the bottom of the tank; the straw assembly comprises:

a hose, the two opposite ends of which are respectively a valve end and a counterweight end, the valve end is communicated with the liquid agent inlet of the valve component, and the counterweight end extends towards the bottom of the tank body;

the balance weight piece is arranged at the balance weight end of the hose, and when the tank body is in shaking, the balance weight piece is pulled by gravity to enable the tail end of the suction pipe assembly to automatically move towards the ground;

the top end of the hard pipe is connected with the valve component, and the bottom end of the hard pipe extends towards the bottom of the tank body;

wherein, the hose passes through the hard tube, and the counterweight end of the hose protrudes downwards from the bottom end of the hard tube;

wherein, an exposed section is arranged between the hose protruding out of the bottom end of the hard pipe and the top of the counterweight.

The invention has the following advantages:

first, the suction pipe assembly for sucking the liquid agent in the high-pressure spray tank has a hose and a weight member, the weight member is disposed at one end (i.e. the weight end) of the hose extending toward the bottom of the tank body, therefore, when the tank body is in an inclined state or a horizontal state, the counterweight member can lead the tail end of the hose to automatically move randomly towards the ground under the traction action of gravity, so that the tail end of the suction pipe component for sucking the liquid agent automatically moves towards the same ground direction space with the liquid agent in the tank body, even if the liquid agent in the tank body flows from the bottom of the tank body and is concentrated at the side wall of the tank body because the tank body is inclined, the tail end of the hose automatically moves towards the side wall where the liquid is concentrated, so that the invention is ensured that under the condition that the tank body is inclined or horizontal, the trailing end of the straw assembly is still capable of drawing and spraying the liquid formulation in the tank even when the volume of liquid in the tank is only half or less.

Secondly, the hard pipe is sleeved outside part of the hose, so that the hard pipe can properly limit the bending deformation of the hose to avoid the influence of high-pressure gas in the hose or avoid the hose or the counterweight to swing or fall in the tank randomly due to violent shaking of a user during operation. Therefore, the tail end of the suction pipe component can be kept immersed in the liquid, and the liquid in the tank can be normally sprayed out.

Thirdly, the invention is provided with the hose, the drooping weight piece is suspended on the hose, the hose penetrates into the hard pipe, and the exposed hose which can be bent and extended moderately is arranged between the notch at the bottom end of the hard pipe and the top of the drooping weight piece, so that the hose can suspend the drooping weight piece on the tank bottom space of the tank body with any large capacity (such as using a 1-inch valve) or small capacity (such as using a 20-millimeter valve), and the hose can be used in a vertical state, an inclined state in any direction, a horizontal state in any direction, an inclined state and a simultaneous rotating state and the like; even when the liquid capacity in the tank is only half or less, the water suction port at the tail end of the weight part suspended and hung by the hose can be positioned and immersed in the liquid at the bottom of the tank at random, in short, the invention can almost completely spray the liquid in the tank, and reduce the waste caused by the fact that the residual excessive liquid in the tank cannot be sprayed, which is not existed in a suction pipe (a straight pipe type suction pipe or a suction pipe with the tail end close to the corner where the tank body is connected with the tank bottom) in the prior art.

Furthermore, in the aforementioned high pressure spray tank, the suction pipe assembly further includes a counterweight tightening ring, the counterweight tightening ring surrounds to form a tightening hole, and the tightening hole of the counterweight tightening ring is sleeved at the counterweight end of the hose, so that the hose is clamped and positioned in the tightening hole of the counterweight tightening ring.

Furthermore, in the aforementioned high pressure spray tank, the counterweight packing ring has a groove, the groove penetrates through a ring wall of the counterweight packing ring, and a gap is formed at a periphery of an opening of the packing outlet of the counterweight packing ring, thereby increasing a function that the packing outlet can be elastically expanded.

Further, in the aforementioned high-pressure spray tank, a diameter of a ring wall surface of the pressing hole of the counterweight pressing ring is tapered; wherein, when this counter weight packing ring is not located this hose, this counter weight packing ring should compel the diameter of the tight export of this compeling of tight hole and be less than the external diameter of this hose.

Further, the aforementioned high-pressure spray tank, wherein: the outer ring side of the counterweight packing ring is provided with an inner clamping part which is a ring groove; an outer clamping part is formed on the side surface of an inner ring of the counterweight part and is a ring flange; the outer clamping portion of the counterweight member is clamped with the inner clamping portion of the counterweight packing ring.

Further, in the aforementioned high pressure spray tank, the suction pipe assembly further includes a valve packing ring, the valve packing ring has a packing hole, and the packing hole of the valve packing ring is sleeved outside the valve end of the hose, so that the hose is clamped and positioned in the packing hole of the valve packing ring.

Furthermore, in the aforementioned high pressure spraying tank, the valve assembly further comprises a valve body and a valve rod, the liquid inlet is located at the bottom end of the valve body, the bottom end of the valve rod is disposed in the valve body, and the liquid outlet is located at the top end of the valve rod.

Further, the aforementioned high-pressure spray tank, wherein: the counterweight part is provided with a through hole; the weight end of the hose penetrates through the through hole of the weight part and is adjacent to the bottom of the tank body.

Furthermore, in the aforementioned high pressure spray tank, the weight member has a weight ring body and a buffer housing, and the buffer housing is wrapped around the weight ring body.

Further, in the high pressure spraying tank, the hose is made of polyethylene, and has an inner diameter of 0.75 to 0.85 mm and an outer diameter of 1.40 to 1.55 mm.

Further, in the aforementioned high-pressure spraying tank, the length of the hard pipe exceeds half of the height of the tank body; the distance between the bottom end of the hard tube and the bottom of the tank body is defined as a movable distance, and the movable distance is smaller than or equal to the inner diameter of the tank body.

Therefore, when the tank body is inclined, the hard pipe can appropriately limit the bending amount of the hose, and the water suction port of the hose penetrating through the counterweight can be quickly positioned in the liquid.

Further, in the high-pressure spray can, an inner wall surface of the hard tube and an outer wall surface of the hose are spaced apart, and a difference between an inner diameter of the hard tube and an outer diameter of the hose is less than or equal to 1.4 mm. Therefore, the hard pipe can appropriately limit the movement of the hose, and the hard pipe can be easily sleeved outside the hose when the two pipes are assembled.

Further, the aforementioned high-pressure spray tank, wherein: the end of the hard pipe far away from the valve component is a bottom end, and the distance between the bottom end and the bottom of the tank body is defined as a movable distance; the ratio of the movable distance to the inner diameter of the tank body is between 0.5 and 1.

Further, in the aforementioned high pressure spray can, a ratio of the outer diameter of the hose to the inner diameter of the hard tube is between 0.3 and 0.8.

Drawings

Fig. 1 is a schematic cross-sectional view of a first embodiment of the present invention.

Fig. 2 is a partial cross-sectional exploded view of the first embodiment of the present invention.

Fig. 3A is a schematic partial cross-sectional view of a first embodiment of the present invention at the valve end of a hose.

Fig. 3B is a perspective external view of the valve packing ring of the first embodiment of the present invention.

FIG. 3C is a schematic partial cross-sectional view of the weight end of the hose according to the first embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of the first embodiment of the present invention in a horizontal state.

FIG. 5 is a schematic cross-sectional view of the first embodiment of the present invention in an inclined state.

Fig. 6 is a schematic cross-sectional view of a second embodiment of the present invention.

FIG. 7 is a cross-sectional view of a second embodiment of the present invention in a horizontal position.

FIG. 8 is a schematic cross-sectional view of a second embodiment of the present invention in an inclined state.

Fig. 9 is a schematic cross-sectional view of a prior art high pressure spray can.

Fig. 10 is a cross-sectional view of a high-pressure spray tank in a horizontal state according to the prior art.

FIG. 11 is a cross-sectional view of a high pressure spray tank of the prior art in an inclined state.

Fig. 12 is a cross-sectional schematic view of a prior art small volume high pressure spray can in a horizontal position.

Fig. 13 to 15 are schematic cross-sectional use views of another small-capacity high-pressure spray can of the prior art.

FIG. 16 is a schematic cross-sectional view of a high-pressure spray tank of the prior art in a horizontal state.

Detailed Description

The technical means adopted by the invention to achieve the preset purpose are further described below by combining the accompanying drawings and the preferred embodiments of the invention.

Referring to fig. 1, a first embodiment of the high pressure spray can of the present invention includes a can 10, a valve assembly 20, a suction pipe assembly 30 and a rigid pipe 40.

The can body 10 is a hollow body and has a mounting opening, preferably a crimping opening; in the present embodiment, the preferred material of the can body 10 is metal, and the curled opening is located at the top end of the can body 10; in this embodiment, the bottom of the can body 10 has a bottom wall 11 in the shape of a circular arc, and the bottom wall 11 is recessed toward the inner space 12 of the can body 10, whereby the can body 10 can be stood upright by the peripheral edge of the bottom wall 11.

The valve assembly 20 has a liquid inlet 21 and a liquid outlet 22, the liquid inlet 21 is located in the inner space 12 of the tank 10, and the liquid outlet 22 is located outside the tank 10; the liquid agent inlet 21 may be in communication with the liquid agent outlet 22. Specifically, the valve assembly 20 shown in fig. 1 and 2 comprises a valve body 23, a valve stem 24 and a metal fixing cover 25, wherein the valve body 23 is arranged at the bottom of the fixing cover 25, the fixing cover 25 is hermetically fixed on the curled opening of the can body 10, and the liquid agent inlet 21 is formed at the bottom end of the valve body 23; the valve rod 24 is a tube; the bottom end of the valve rod 24 is arranged in the valve body 23, the top end of the valve rod 24 penetrates through a central hole at the bottom of the fixed cover 25 and protrudes out, and the top end of the valve rod 24 is provided with a liquid agent outlet 22; further, the liquid inlet 21 of the valve assembly 20 is connected to the liquid outlet 22 via the liquid passage 232; further, in this embodiment, there is a nozzle 50, and the nozzle 50 is a matching product of the high-pressure spray tank; usually, the spray head 50 is mounted on the liquid agent outlet 22 at the top end of the valve stem 24, and the spray opening 51 of the spray head 50 is communicable with the liquid agent outlet 22 of the valve stem 24. Since the valve assembly 20 is a conventional assembly, the detailed construction thereof will not be described in further detail. The valve specification in this example is 1 inch; referring to fig. 9, the assembly of a conventional standard valve includes seven components, namely, a valve stem, an inner seal ring, a fixed cap 95, an outer seal ring, a valve body 96, a spring, and a suction tube 93 (but four components, namely, a valve stem, an inner seal ring, an outer seal ring, and a spring, are not shown).

The straw assembly 30 has a head end 31 and a tail end 32 communicating with each other, the head end 31 communicating with the liquid inlet 21 of the valve assembly 20, and the tail end 32 extending toward the bottom of the tank 10 and adjacent to the bottom of the tank 10; the straw assembly 30 has a hose 33 and a weight 34;

opposite ends of the flexible tube 33 are respectively a valve end 331 and a weight end 332, the valve end 331 is communicated with the liquid agent inlet 21 of the valve assembly 20, and the weight end 332 extends towards the bottom of the tank 10; the preferred material for the hose 33 is a thin, flexible Polyethylene (PE) tube, preferably having an inner diameter of 0.8 mm and an outer diameter of 1.5 mm; the recommended inner diameter of the hose 33 is 0.75 to 0.85 mm, and the recommended outer diameter is 1.40 to 1.55 mm, but the size of the hose 33 is not limited thereto, and the material of the hose 33 is not limited to a soft material such as polyethylene, as long as the hose 33 easily exhibits the property of bending and stretching by the weight 34 described later under the traction of gravity.

Referring to fig. 1 and 3B, the weight member 34 is disposed at the weight end 332 of the hose 33, and the weight member 34 automatically moves the tail end 32 of the straw assembly toward the space on the ground; specifically, when one side of the tank 10 is inclined toward the ground, the weight member 34 is pulled by gravity to allow the hose to be moderately bent and extended, so that the tail end 32 of the weight member 34 of the straw assembly 30 moves toward the ground; in this embodiment, a through hole 344 is formed at the center of the weight member 34, and the weight end 332 of the hose 33 extends toward the bottom of the tank 10 and penetrates the through hole 344 protruding from the weight member 34; however, the weight end 332 of the flexible tube 33 is not limited to protrude through the weight member 34, for example, in other preferred embodiments, the weight end 332 of the flexible tube 33 can also be disposed between the through holes 344 of the weight member 34.

Referring to fig. 1 and fig. 3B, in the present embodiment, the counterweight 34 has a counterweight ring body 341 and a buffer housing 342; the counterweight ring body 341 is preferably made of a metal hollow ring body, but the shape of the counterweight ring body 341 is not limited to a ring shape, and may be a cylinder or a sheet; in addition, the counterweight ring body 341 may be made of a material with a higher density, such as glass or ceramic, so as to increase the weight of the counterweight ring body 341 and reinforce the effect that the counterweight member 34 can be pulled by gravity to move the tail end 32 of the straw assembly 30 toward the space of the ground direction; the buffer shell 342 is wrapped outside the counterweight ring body 341 to avoid the counterweight ring body 341 directly impacting the metal can body 10 to generate annoying noise and even damage the structure of the counterweight 34; the material of the buffer housing 342 is plastic, and preferably Polyethylene (PE) or polypropylene (PP). The size of the weight 34 can be adjusted depending on the inner space of the tank bottom.

Referring to fig. 2, fig. 3A and fig. 3B, the straw assembly 30 in this embodiment has a valve packing ring 35 and a counterweight packing ring 36; specifically, the valve end 331 of the hose 33 is inserted through the valve packing ring 35; the valve pressing ring 35 forms a valve pressing hole 351 in a surrounding manner, the upper end and the lower end of the valve pressing hole 351 are respectively provided with a pressing inlet 3511 and a pressing outlet 3512, the opening diameter of the pressing outlet 3512 is slightly smaller than that of the pressing inlet 3511, and therefore the opening diameter of the pressing inlet 3511 is in a tapered hollow cone shape towards the direction of the pressing outlet 3512. Further, when the valve packing ring 35 is not fitted to the hose 33, the opening diameter of the packing outlet 3512 is slightly smaller than the outer diameter of the hose 33. Further, the valve packing ring 35 has an inner engaging portion 352 and a groove 353. The inner engaging portion 352 is formed on the outer ring side surface of the valve packing ring 35, and the inner engaging portion 352 is specifically a ring groove; the groove 353 penetrates through the annular wall of the valve fastening ring 35 and forms a notch on the opening periphery of the fastening outlet 3512, so that the function that the fastening outlet 3512 can be elastically expanded is increased, and the valve end 331 of the hose 33 can easily penetrate from the fastening inlet 3511 to the fastening outlet 3512; the valve end 331 of the hose 33 is formed to have a length suitable for penetrating and protruding out of the tightening outlet 3512, and the tightening outlet 3512 surrounds the tightening ring and restricts the sliding movement of the hose 33, so that the hose 33 is clamped and positioned in the valve tightening hole 351 of the valve tightening ring 35.

Referring to fig. 2 and fig. 3A, further, in the present embodiment, an inner space of the valve body 23 of the valve assembly 20 is formed with an inner ring side surface corresponding to an outer ring side surface of the valve packing ring 35 and a liquid agent channel 232, the outer engaging portion 231 is formed on the inner ring side surface of the valve body 23, and the outer engaging portion 231 is specifically a ring flange; a liquid agent passage 232 formed in the inner space of the valve body 23 and communicating with the liquid agent outlet 22 of the valve stem 24; further, the hose 33 is clamped and positioned in the valve packing ring 35, that is, the valve packing ring 35 and the hose 33 are combined into a single unit 3533. Therefore, when the hose 33 is connected to the valve body 23, the valve packing ring 35 and the hose 33 are combined into the combined unit 3533, and then the valve packing ring 35 on the side of the combined unit 3533 from which the hose valve end 331 protrudes is pushed toward the inner space of the valve body 23, so that the inner engagement portion 352 (ring groove) of the valve packing ring 35 can be stably engaged with the outer engagement portion 231 (ring flange) of the valve body 23; and the valve end 331 of the hose 33 protruding therefrom is automatically inserted into the liquid agent passage 232.

Referring to fig. 3C, specifically, the shape, size and structure of the weight packing ring 36 of the weight 34 and the combination of the hose 33 and the weight packing ring 36 are all the same as those of the valve packing ring 35; thus, the weight end 332 of the hose 33 is inserted into the weight pressing ring 36; the counterweight pressing ring 36 surrounds to form a counterweight pressing hole 361, the upper end and the lower end of the counterweight pressing hole 361 are respectively provided with a pressing inlet 3611 and a pressing outlet 3612, the opening diameter of the pressing outlet 3612 is slightly smaller than that of the pressing inlet 3611, so that the opening diameter of the pressing inlet 3611 is in a tapered hollow cone shape towards the direction of the pressing outlet 3612. Further, when the weight packing ring 36 is not fitted to the hose 33, the opening diameter of the packing outlet 3612 is slightly smaller than the outer diameter of the hose 33. Further, the weight packing ring 36 has an inner engaging portion 362 and a groove (not numbered). The inner engagement portion 362 is formed on the outer ring side of the weight pressing ring 36, and the inner engagement portion 362 is specifically a ring groove; the groove penetrates through the annular wall of the counterweight tightening ring 36, and a notch is formed on the periphery of the opening of the tightening outlet 3612, so that the function that the tightening outlet 3612 can be elastically expanded is increased, and the counterweight end 332 of the hose 33 can easily penetrate from the tightening inlet 3611 to the tightening outlet 3612; the weighted end 332 of the hose 33 is threaded to protrude from the tightening outlet 3612, and the tightening outlet 3612 surrounds the tightening ring and restricts the sliding of the hose 33, so that the hose 33 is clamped and positioned in the weight tightening hole 361 of the weight tightening ring 36.

Further, the inner space of the weight 34 is formed with an inner ring side surface corresponding to the outer ring side surface of the weight pressing ring 36 and a through hole 344, the outer engaging portion 343 is formed on the inner ring side surface of the weight 34, and the outer engaging portion 343 is specifically a ring flange; through bore 344 extends through the center of weight 34; further, like the valve packing ring 35, the flexible tube 33 is clamped and positioned in the weight packing ring 36, i.e. the weight packing ring 36 and the flexible tube 33 are combined into a combined body 3633. Therefore, when the hose 33 is connected with the weight 34, the weight pressing ring 36 and the hose 33 are combined into the combined single body 3633, and then the weight pressing ring 36 on the side of the combined single body 3633 where the hose weight end 332 protrudes is pushed towards the inner space of the weight 34, so that the inner clamping part 362 (ring groove) of the weight pressing ring 36 can be firmly embedded into the outer clamping part 343 (ring flange) of the weight 34; while the projecting weighted end 332 of the hose 33 is automatically inserted into the through hole 344 and projects out of the bottom of the weight member 34.

The two opposite ends of the hard tube 40 are a top end and a bottom end 41, the top end of the hard tube 40 is connected to the bottom end of the valve body 23 of the valve assembly 20, and the bottom end 41 of the hard tube 40 extends toward the bottom of the tank 10; the hard tube 40 is sleeved outside the hose 33 of the suction tube component 30; and the bottom end 41 of the wand 40 terminates at the upper end of the weight 34 depending from the hose 33.

In the present embodiment, the distance between the bottom end of the rigid tube 40 and the bottom of the tank 10 is defined as a movable distance D1 (shown in fig. 1), the movable distance D1 is less than or equal to the inner diameter of the tank 10, and the length of the rigid tube 40 exceeds half of the height D2 (shown in fig. 1) of the tank 10. Thus, when the tank body is tilted, the pipe 40 can appropriately restrict the amount of bending of the hose 33, and the water suction port of the hose 33 inserted through the weight 34 can be quickly positioned in the liquid agent a. Further, the ratio of the length of the movable distance D1 to the inner diameter of the tank 10 is preferably 0.5 to 1, so that the weight 34 can move the hose 33 quickly.

Further, the weighted end 332 of the flexible tube 33 is inserted downward to protrude from the bottom end 41 of the hard tube 40, and a moderate bending and stretching exposed section 333 (shown in fig. 1) is provided between the flexible tube 33 protruding from the bottom end 41 of the hard tube 40 and the top of the weight member 34; because the exposed hose 333 capable of bending and stretching moderately is not sleeved by the hard tube 40, the exposed hose 333 can freely move or rotate outside the cut at the bottom end 41 of the hard tube 40, and the exposed hose 333 almost maintains the original soft and bendable stretching characteristics; therefore, the exposed hose 333 will abut against the cut at the bottom end 41 of the hard tube 40, and the weight 34 suspended and hung from the exposed hose 333 will exhibit the function of gravity traction, so that the weight 34 suspended and hung from the exposed hose 333 can be used in the upright state, the inclined state in any direction, the horizontal state in any direction and the inclined and simultaneously overturned state with the hand holding the spray can, even when the liquid capacity in the can is only half or less, the spray can be moved and positioned in the liquid A immersed in the can in real time and arbitrarily. The hard tube 40 is preferably made of a straight tube of hard Polyethylene (PE), and the inner diameter of the straight tube is slightly larger than the outer diameter of the hose;

in the present embodiment, the inner wall surface of the hard tube 40 is provided at a distance from the outer wall surface of the hose 33, and the difference between the inner diameter of the hard tube 40 and the outer diameter of the hose 33 is 1.4 mm or less. Therefore, the hard tube 40 can properly restrict the movement of the flexible tube 33 and the hard tube 40 can be easily sleeved outside the flexible tube 33 when the two tubes are assembled. In other preferred embodiments, the ratio of the outer diameter of the flexible tube 33 to the inner diameter of the rigid tube 40 is between 0.3 and 0.8, so as to properly limit the extent to which the flexible tube 33 can move within the rigid tube 40 and maintain a proper clearance for easy installation.

In other words, if the present invention does not have the hard tube 40, when the user presses the spray head 50 of the spray can, the weight 34 suspended by the flexible tube 33 will be easily swung or drooped by the propellant in the can, and the tail end 32 of the straw assembly 30 cannot be positioned and immersed in the liquid agent a, and thus cannot spray the liquid agent a in the can. For example, when a user sprays insects and mosquitoes flying in a rush with an insecticide, or a ruffian or a person harasser threatened by force with a hot pepper spray can, the user is in a dynamic operation of the spray can, and the weight member 34 of the can body 10 is easy to wave or fall down so that the tail end 32 of the straw assembly 30 cannot be positioned and immersed in the liquid A, and the tail end 32 of the straw assembly 30 cannot suck the liquid A; therefore, the hose 33 protruding from the bottom end 41 of the hard tube and the top of the weight 34 must not be sleeved by the hard tube 40, so that the exposed hose 333 can exhibit a moderate bending and stretching effect under the traction of gravity on the weight 34, and the tail end 32 of the straw assembly 30 can be arbitrarily and rapidly positioned and immersed in the liquid A.

When the liquid agent A and the propellant (not shown) are filled in the tank 10, a user presses the spray head 50 towards the tank 10 to open the valve rod 24 of the valve assembly 20, and the pressure formed by the propellant in the tank pushes the liquid agent A to be upwards pressed and sent into the valve body 23 through the weight end 332 of the hose 33, and then the liquid agent A is sprayed out from the spray port 51 of the spray head 50 through the liquid agent outlet 22 of the valve rod 24. Further, the propellant is preferably dimethyl ether (DME) or nitrogen (N) as a compressed gas₂) And the liquid agent is the content of the formulated product, such as an insecticide or a defense capsicum agent.

Referring to fig. 4 and 5, in a first embodiment of the present invention, when the tank 10 is in a horizontal or inclined state, and the liquid a in the tank 10 is pulled by gravity to flow from the bottom of the tank 10 toward the ground and concentrate to the sidewall of the tank 10, the weight member 34 is also pulled by gravity to rapidly move the tail end 32 of the straw assembly 30 toward the concentrated liquid a, so that the water suction port of the tail end 32 of the straw assembly 30 can be kept submerged in the liquid a, thereby ensuring that the straw assembly 30 can still suck and spray the liquid in the tank when the tank 10 is in a horizontal or inclined state. The valve gauge in this first embodiment is 1 inch. The two most common standard valves today are 1 inch (for large capacity) and 20mm (20mm) (for small capacity).

Referring to fig. 6 to 8, a second embodiment of the present invention is substantially the same as the first embodiment, except that the second embodiment is a small-capacity can 10A, and the valve assembly 20A has a valve gauge of 20mm (20 mm).

In summary, the straw assembly 30 of the present invention has a flexible tube 33 and a weight member 34, the weight member is disposed at the end of the flexible tube; the weighted end 332 of the hose 33 is inserted downward into the bottom end 41 protruding from the hard tube 40, and a bare hose 333 capable of bending and stretching moderately is provided between the hose 33 protruding from the bottom end 41 of the hard tube and the top of the weight member 34, so that the weight member 34 is pulled by gravity to make the tail end 32 of the straw assembly 30 automatically move arbitrarily toward the ground; when the spray can is used in a standing state, an inclined state in any direction, a horizontal state and an inclined and simultaneously rotating state in any direction; even when the liquid capacity in the tank is only half or less, the water suction port of the counterweight end 332 of the weight 34 suspended and hung by the hose 33 can be freely moved and positioned to be immersed in the liquid A at the bottom of the tank or close to the corner where the tank body is connected with the tank bottom, so that the liquid in the tank can be almost completely sprayed out, and the waste caused by the fact that excessive liquid remained in the tank cannot be sprayed out is reduced.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.