TWI755223B - High pressure spray can - Google Patents

Abstract

The invention relates to a high-pressure spray tank, which comprises a tank body, a valve assembly, a hose, a counterweight and a hard pipe; the valve assembly is arranged on the tank body and can communicate with the inside and outside of the tank; two parts of the hose The ends are respectively connected with the valve assembly and the counterweight, and the counterweight makes the tail end of the hose move automatically toward the space in the direction of the ground. The hard pipe is sheathed outside the hose; the distance between the bottom end of the hard pipe and the bottom of the tank is defined as a moving distance, and the moving distance is less than or equal to the inner diameter of the tank; the hose protrudes downward from the hard pipe; thereby, When the tank is tilted or horizontal, the counterweight will automatically move the end of the hose toward the liquid agent in the high-pressure spray tank to keep it immersed in the liquid agent, so that the liquid agent can still be sprayed in a tilted or horizontal state. The rigid tube can moderately limit the amount of bending of the hose, so that the suction port of the hose passing through the counterweight can be quickly positioned in the liquid.

Description

High pressure spray can

The present invention relates to a container for containing and spraying liquid agent of products, especially a spray can which can be filled with liquid agent and propellant, and sprays the liquid agent with the propellant.

Please refer to FIG. 9 and FIG. 10 , the conventional high-pressure spray can for spraying product liquids, such as spraying insecticides or defense pepper spray cans, etc., has a can body 91, a valve assembly 92, a The suction pipe 93 and a spray head 94; the top end of the tank body 91 has a curling opening; the valve assembly 92 is sealed and fixed on the curling opening of the tank body 91; the head end 931 of the suction pipe 93 installed in the tank body 91 communicates with the valve The assembly 92, the tail end 932 is adjacent to the bottom of the tank body 91; when the spray can is in use, the liquid agent A and the propellant (such as compressed gas) are filled in the tank body 91, and the pressure formed by the propellant in the tank can push the liquid The agent A flows into the suction tube 93 and is ejected by the spray head 94 after passing through the valve assembly 92 .

The shape of the conventional straw 93 is mostly one of the following two forms:

In the first form, the end 932 of the suction pipe 93 is close to the corner 911 where the tank body and the tank bottom are connected; The direction is usually fixed to the same side as the spray port 941 of the spray head 94 at the top of the spray can, and the suction port of the tail end 932 of the suction pipe 93 is close to the corner 911 where the tank body and the bottom of the tank are connected, so the suction port can be used. Submerged and positioned in Liquid A in the bottom of the tank.

When the hand-held spray can is used in an upright position, or even when the liquid volume in the can is only half or less, and the can is tilted to a horizontal state for use, the bottom of the can or close to the end of the corner 911 where the can body and the bottom are connected The 932 water suction port can be immersed in the liquid agent A in the tank, and the liquid agent A in the tank can be sprayed out when the nozzle 94 is pressed at this time.

Please refer to Fig. 11 to Fig. 12. However, when the volume of the liquid agent A in the tank is only half or less, and the spray port 941 of the spray head 94 at the top of the spray tank is inclined in the opposite direction to the ground When used in the state, or tilted toward the ground and turned horizontally to the left or right at the same time, the suction port of the suction pipe end 932 of the adjacent can body is also inclined to the ground with the can body 91 at the same time. And turn left or right at the same time, or tilt in the opposite direction to the ground, so the liquid A in the tank cannot be immersed in the suction port of the straw 93, and because the tank body is usually an opaque material, the user has no way of knowing the tail. The position of the water suction port of the end 932 in the tank, even if there is still residual liquid A in the tank, when the nozzle 94 is pressed, the liquid agent A in the tank cannot be ejected.

The second form is the straight-pipe suction pipe 93A; please refer to FIG. 13 , the head end 931A of the conventional straight-pipe suction pipe 93A is generally disposed at the bottom end of the valve assembly 92A, and the tail end 932A of the suction pipe 93A is located in the tank The center extends and its suction port is close to the bottom of the tank. When the spray can in hand is used upright, the water suction port of the end 932A of the straw can be immersed in the liquid agent A in the tank. At this time, the liquid agent A in the tank can be sprayed by pressing the spray head 94A at the top of the spray tank.

Please refer to Fig. 14 to Fig. 16, but when the capacity of the liquid agent A in the can is only half or less, and the spray port 941A of the spray head 94A at the top of the spray can is inclined toward the ground, or is inclined When used in a horizontal state, the suction port of the straw 93A cannot be immersed in the liquid agent A in the tank, even if there is still residual liquid agent A in the tank at this time, when the nozzle 94A is pressed or the spray gun 97 is pressed down. The triggers 971 are also unable to eject the liquid agent A in the tank.

Therefore, the high-pressure spray can of the prior art needs to be improved.

In view of the aforementioned shortcomings and deficiencies of the prior art, the present invention provides a high-pressure spray can. tilted in direction or horizontal in either direction, even within the tank When the liquid volume is half or less, the tail end of the straw assembly can still suck and spray the liquid in the tank.

In order to achieve the above-mentioned purpose of the invention, the technical means adopted in the present invention is to design a high-pressure spray can, which includes: a can body, which is a hollow body, and has an installation opening; a valve assembly, which is sealed and fixed on the The installation opening of the tank body, the valve assembly has a liquid agent inlet and a liquid agent outlet, the liquid agent inlet is located in the inner space of the tank body, and the liquid agent outlet is located outside the tank; the liquid agent inlet is selectively communicating with the liquid agent outlet; a suction pipe assembly, which has a head end and a tail end that communicate with each other, the head end communicates with the liquid agent inlet of the valve assembly, and the tail end extends toward the bottom of the tank body and is adjacent to the tank The bottom of the body; the suction pipe assembly has: a hose, the opposite ends of which are respectively a valve end and a weight end, the valve end is connected to the liquid inlet of the valve assembly, and the weight end faces the tank body The bottom extends from the bottom; a counterweight is arranged on the counterweight end of the hose. When the tank is shaking, the counterweight is pulled by gravity to make the tail end of the straw assembly automatically face the direction of the ground. move; a rigid pipe, the top end of the rigid pipe is connected to the valve assembly, the bottom end of the rigid pipe extends toward the bottom of the tank body; the length of the rigid pipe exceeds half of the height of the tank body; the rigid pipe The distance between the bottom end and the bottom of the tank body is defined as a movable distance, and the movable distance is less than or equal to the inner diameter of the tank body; wherein, the hose passes through the hard pipe, and the counterweight end of the hose faces toward the inner diameter of the tank body. It protrudes from the bottom end of the hard pipe; wherein, there is a bare section between the hose protruding from the bottom end of the hard pipe and the top of the counterweight.

The advantages of the present invention are as follows:

First, the suction pipe assembly used for absorbing the liquid agent in the high-pressure spray tank has a hose and a counterweight. By this, when When the tank is tilted or in a horizontal state, the weight of the counterweight will automatically move the end of the hose toward the ground by gravity, so that the end of the suction pipe assembly for absorbing the liquid will automatically interact with the liquid in the tank. Even if the liquid agent in the tank is concentrated from the bottom of the tank to the side wall of the tank due to the tilt of the tank, the tail end of the hose will automatically move towards the side wall where the liquid is concentrated. It is ensured that when the tank is tilted or horizontal, even when the liquid volume in the tank is only half or less, the tail end of the suction pipe assembly can still suck and spray the liquid in the tank.

Second, the hard pipe is sleeved outside the hose, the length of the hard pipe is more than half of the height of the tank, and the distance between the bottom end of the hard pipe and the bottom of the tank is less than or equal to the inner diameter of the tank. In this way, when the tank body is tilted, the rigid tube can moderately limit the bending amount of the hose, so that the suction port of the hose passing through the counterweight can be quickly positioned in the liquid agent, and the hose can also be prevented from being affected by the high-pressure gas in the tank. , or because the user shakes violently during operation, the hose or the counterweight will dance or sag arbitrarily in the tank. In this way, the tail end of the suction pipe assembly can remain immersed in the liquid agent, and the liquid agent in the tank can be normally sprayed.

Third, in the present invention, a hose is provided, and the hanging counterweight is suspended from the hose, and the hose penetrates into the hard pipe, and the bottom cut of the hard pipe and the top of the hanging counterweight are connected. There is a bare hose that can be moderately bent and stretched, so the sagging counterweight of the hose can be used in any large capacity (such as using a 1-inch valve) or small capacity (such as using a 20mm valve) tank. In the bottom space of the tank, it can be used in the upright state, the inclined state in any direction, the horizontal state in any direction, and the inclined and simultaneous rotation state, etc.; even when the liquid capacity in the tank is only half or less, it is soft at this time. The water suction port at the tail end of the counterweight hanging down from the tube can be immersed in the liquid agent at the bottom of the tank at any speed and position. The waste caused by too much liquid agent remaining in the body cannot be ejected, which is not found in the straws in the prior art (straight-pipe straws or straws with the end close to the corner where the tank body and the bottom of the tank are connected).

Further, in the high-pressure spray can, the inner wall of the hard pipe and the outer wall of the hose are spaced apart, and the difference between the inner diameter of the hard pipe and the outer diameter of the hose is less than or equal to 1.4 cm centimeters. Thereby, the rigid tube can moderately restrict the movement of the hose, and the rigid tube can be easily sheathed outside the hose when the two tubes are assembled.

Further, the high-pressure spray can, wherein: one end of the hard pipe away from the valve assembly 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 movable distance and the The ratio of the inner diameters of the cans is between 0.5 and 1.

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

Further, in the high-pressure spray can, the straw assembly further includes a counterweight tightening ring, and the counterweight tightening ring forms a tightening hole around it, and the tightening hole of the weight tightening ring is sleeved on the The weighted end of the hose, whereby the hose is clamped and positioned in the compression hole of the weighted compression ring.

Further, in the high-pressure spray can, the counterweight pressing ring has a groove, the groove penetrates through the ring wall of the counterweight pressing ring, and is located at the end of a pressing outlet of the counterweight pressing ring. A gap is formed on the periphery of the opening, thereby increasing the function that the pressing outlet can be stretched elastically.

Further, in the high-pressure spray can, the diameter of the ring wall of the tightening hole of the weight tightening ring is tapered; wherein, when the weight tightening ring is not sleeved on the hose, the The diameter of the compression outlet of the compression hole of the counterweight compression ring is smaller than the outer diameter of the hose.

Further, in the high-pressure spray can, an inner engaging portion is formed on the side of the outer ring of the counterweight tightening ring, which is a ring groove; an inner ring side of the counterweight is formed with an outer engaging portion part, which is a ring flange; the outer engaging part of the counterweight is engaged with the inner engaging part of the counterweight tightening ring.

Further, in the high-pressure spray can, the suction pipe assembly further comprises a valve tightening ring, the valve tightening ring has a tightening hole, and the tightening hole of the valve tightening ring is sleeved on the hose. Outside the valve end, whereby the hose is clamped and positioned in the compression hole of the valve compression ring.

Further, in the high-pressure spray can, the valve assembly further comprises a valve body and a valve stem, the liquid agent inlet is located at the bottom end of the valve body, the bottom end of the valve stem is set in the valve body, the The liquid outlet is located at the top of the valve stem.

Further, in the high-pressure spray can, wherein: the counterweight is formed with a through hole; the counterweight end of the hose penetrates through the through hole of the counterweight and is adjacent to the bottom of the tank body.

Further, in the high-pressure spray can, the counterweight member has a counterweight ring body and a buffer casing, and the buffer casing is wrapped around the counterweight ring body.

Further, in the high-pressure spray can, the hose is made of polyethylene, the inner diameter of the hose is between 0.75 and 0.85 mm, and the outer diameter of the hose is between 1.40 and 1.55 mm. .

10: Tank

11: Bottom wall

12: Internal space

20: Valve assembly

21: Liquid inlet

22: Liquid outlet

23: valve body

231: Outer engaging part

232: Liquid channel

24: Stem

25: Fixed cover

30: Straw Assembly

31: head end

32: tail end

33: Hose

331: valve end

332: Counterweight End

333: Bare Segment

34: Counterweights

341: Counterweight Ring Body

342: Buffer shell

343: Outer engaging part

344: Through hole

35: Valve tightening ring

351: Compression hole

3511: Press the entrance

3512: Urgent exit

352: Internal Snap

353: Groove

3533: Combination monomers

36: Counterweight Tightening Ring

361: Compression hole

3611: Press the entrance

3612: Urgent exit

362: Internal Snap

3633: Combination monomers

40: Hard Tube

41: Bottom

50: Nozzle

51: spout

D1: Active Distance

D2: height

A: liquid

10A: Tank

20A: Valve assembly

91: Tank

911: Corner

92: Valve assembly

93: Straws

931: head end

932: tail

94: Sprinkler

941: spout

92A: Valve Assembly

93A: Straw

931A: Head end

932A: tail end

94A: Nozzle

97: Spray Gun

971: Trigger

941A: Spout

95: Fixed cover

96: valve body

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.

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

3B is a perspective view of the valve tightening ring according to the first embodiment of the present invention.

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

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 schematic cross-sectional view of the second embodiment of the present invention in a horizontal state.

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

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

FIG. 10 is a schematic cross-sectional view of the prior art high-pressure spray can in a horizontal state.

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

FIG. 12 is a schematic cross-sectional view of the prior art small-capacity high-pressure spray can in a horizontal state.

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

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

The technical means adopted by the present invention to achieve the predetermined purpose of the invention are further described below with reference to the drawings and preferred embodiments of the present invention.

Please refer to FIG. 1 , the first embodiment of the high-pressure spray can of the present invention includes a can body 10 , a valve assembly 20 , a suction pipe assembly 30 and a rigid pipe 40 .

The aforementioned tank body 10 is a hollow body and has an installation opening. The installation opening is preferably a crimping opening. In this embodiment, the tank body 10 is preferably made of metal, and the crimping opening is located in the tank body 10 . In this embodiment, the bottom of the tank body 10 has an arc-shaped bottom wall 11, and the bottom wall 11 is recessed toward the inner space 12 of the tank body 10, whereby the tank body 10 can pass through the bottom wall 11. The perimeter is standing on the ground.

The aforementioned valve assembly 20 has a liquid agent inlet 21 and a liquid agent outlet 22. The liquid agent inlet 21 is located in the inner space 12 of the tank body 10, and the liquid agent outlet 22 is located outside the tank body 10; the liquid agent inlet 21 can be connected to the liquid agent outlet. twenty two. Specifically, the valve assembly 20 shown in FIGS. 1 and 2 includes a valve body 23 , a valve stem 24 and a metal fixing cover 25 . The valve body 23 is disposed at the bottom of the fixing cover 25 , and the fixing cover 25 is sealed and fixed. On the crimping opening of the tank body 10, the liquid agent inlet 21 is formed at the bottom end of the valve body 23; the valve stem 24 is a pipe body; The central hole at the bottom of 25 penetrates and protrudes outward, and the top of the valve stem 24 is provided with a liquid agent outlet 22; further, the liquid agent inlet 21 of the valve assembly 20 can be communicated with the liquid agent outlet 22 through the liquid agent channel 232; further For example, in this embodiment, there is a spray head 50, and the spray head 50 is a matching product of the high-pressure spray tank; usually, the spray head 50 is installed on the liquid agent outlet 22 at the top of the valve stem 24, and the spray port 51 of the spray head 50 is connected with the valve stem 24. The liquid agent outlet 22 is communicated. Since the valve assembly 20 is an existing standard assembly, its detailed structure will not be further described in detail. The size of the valve in this embodiment is 1 inch; please refer to Figure 9. The components of a conventional standard valve include a valve stem, an inner sealing ring, A fixed cover 95, an outer sealing ring, a valve body 96, a spring and a suction pipe 93 are composed of seven parts (but one of the four parts is a valve stem, an inner sealing ring, an outer sealing ring and a spring, etc. , not shown in the figure).

The aforementioned suction pipe assembly 30 has a head end 31 and a tail end 32 that communicate with each other, the head end 31 is connected to the liquid inlet 21 of the valve assembly 20, and the tail end 32 extends toward the bottom of the tank body 10 and is adjacent to the bottom of the tank body 10; The straw assembly 30 has a hose 33 and a counterweight 34; The opposite ends of the hose 33 are a valve end 331 and a counterweight end 332, respectively. The valve end 331 is connected to the liquid agent inlet 21 of the valve assembly 20, and the counterweight end 332 extends toward the bottom of the tank body 10; the hose 33 is preferably The material is a soft and flexible polyethylene (PE) thin tube, its inner diameter is preferably 0.8 mm, and its outer diameter is preferably 1.5 mm; the recommended inner diameter of the hose 33 is between 0.75 and 0.85 mm , it is recommended that the outer diameter be between 1.40 and 1.55 mm, but the size of the hose 33 is not limited to this, and the material of the hose 33 is not limited to soft materials such as polyethylene, as long as the hose 33 is easily affected by the following distribution. The weight 34 is only required to exhibit the characteristic of being able to bend and stretch under the action of gravity.

Please refer to FIG. 1 and FIG. 3C , the counterweight 34 is disposed on the counterweight end 332 of the hose 33 , and the counterweight 34 makes the tail end 32 of the straw assembly automatically move toward the space in the direction of the ground; When one side of the tank body 10 is tilted toward the ground, the weight 34 is pulled by gravity, so that the hose can be bent and stretched moderately, so that the tail end 32 of the weight 34 of the straw assembly 30 can move toward the space in the direction of the ground. In this embodiment, a through hole 344 is formed in the center of the counterweight 34, and the counterweight end 332 of the hose 33 extends toward the bottom of the tank 10 and penetrates through the through hole 344 protruding from the counterweight 34; but the hose The weight end 332 of the hose 33 is not limited to protruding through the weight member 34. For example, in other preferred embodiments, the weight end 332 of the hose 33 can also be inserted between the through holes 344 of the weight member 34. .

Please refer to FIG. 1 and FIG. 3C. In this 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. However, the shape of the weight ring body 341 is not limited to a ring shape, and can also be a cylinder or a sheet body; in addition, the weight ring body 341 can also be made of high-density materials such as glass or ceramics, thereby increasing the number of weight rings. Body 341 Weight, Reinforced The counterweight 34 can be pulled by gravity to move the tail end 32 of the straw assembly 30 toward the space in the direction of the ground; the buffer shell 342 is wrapped around the counterweight ring body 341 to prevent the counterweight ring body 341 from directly hitting the metal The tank body 10 may generate annoying noises or even damage the structure of the counterweight 34; the buffer shell 342 is made of plastic, preferably polyethylene (PE) or polypropylene (PP). The volume of the counterweight 34 can be adjusted according to the inner space of the tank bottom.

Please refer to FIG. 2 , FIG. 3A and FIG. 3B , the suction tube assembly 30 in this embodiment has a valve tightening ring 35 and a counterweight tightening ring 36 ; specifically, the valve end 331 of the aforementioned hose 33 Pass through the valve tightening ring 35; the valve tightening ring 35 surrounds a valve tightening hole 351, the upper and lower ends of the valve tightening hole 351 respectively have a tightening inlet 3511 and a tightening outlet 3512, and the opening of the tightening outlet 3512 The diameter is slightly smaller than the opening diameter of the pressing inlet 3511 , so the opening diameter of the pressing inlet 3511 is tapered in the direction of the pressing outlet 3512 . Further, when the valve tightening ring 35 is not sleeved on the hose 33 , the opening diameter of the tightening outlet 3512 is slightly smaller than the outer diameter of the hose 33 . Further, the valve tightening ring 35 has an inner engaging portion 352 and a groove 353 . The inner engaging portion 352 is formed on the side surface of the outer ring of the valve tightening ring 35, and the inner engaging portion 352 is specifically a ring groove; the groove 353 penetrates the annular wall of the valve tightening ring 35, and is located at the tightening outlet 3512 A gap is formed on the peripheral edge of the opening, thereby increasing the function that the pressing outlet 3512 can be elastically stretched, so that the valve end 331 of the hose 33 can be easily penetrated from the pressing inlet 3511 to the pressing outlet 3512; the hose 33 The appropriate length of the valve end 331 is to penetrate and protrude beyond the pressing outlet 3512. At this time, the pressing outlet 3512 will surround the pressing and limit the sliding of the hose 33, whereby the hose 33 is clamped and positioned on the valve pressing The valve of ring 35 squeezes into hole 351 .

Please refer to FIG. 2 and FIG. 3A , further, in this embodiment, the inner space of the valve body 23 of the valve assembly 20 is formed with an inner ring side surface corresponding to the outer ring side surface of the valve tightening ring 35 and a liquid The agent channel 232, the outer engaging portion 231 is formed on the inner ring side of the valve body 23, and the outer engaging portion 231 is specifically a ring flange; the liquid agent channel 232 is formed in the inner space of the valve body 23 and communicates with the valve stem 24. The liquid agent outlet 22; further, the aforementioned hose 33 is clamped and positioned in the valve tightening ring 35, that is, the valve tightening ring 35 and the hose 33 are combined into a combined unit 3533. Therefore, when the hose 33 is connected to the valve body 23, the valve tightening ring 35 and the hose 33 are first combined into a combined unit 3533, and then the valve on the protruding side of the hose valve end 331 of the combined unit 3533 is tightened The ring 35 is pushed toward the inner space of the valve body 23, so that the inner engaging portion 352 (ring groove) of the valve tightening ring 35 can be firmly embedded in the outer engaging portion 231 (ring flange) of the valve body 23; The protruding valve end 331 of the tube 33 is automatically inserted into the liquid agent channel 232 .

Please refer to FIG. 3C . Specifically, the shape, specification and structure of the counterweight pressing ring 36 of the counterweight member 34 and the combination of the hose 33 and the counterweight pressing ring 36 are all related to the valve pressing ring 35 . Therefore, the weight end 332 of the hose 33 is passed through the weight tightening ring 36; Both ends have a pressing inlet 3611 and a pressing outlet 3612 respectively. The opening diameter of the pressing outlet 3612 is slightly smaller than the opening diameter of the pressing inlet 3611, so the opening diameter of the pressing inlet 3611 is tapered towards the pressing outlet 3612. of hollow cone. Further, when the weight tightening ring 36 is not sleeved on the hose 33 , the opening diameter of the tightening outlet 3612 is slightly smaller than the outer diameter of the hose 33 . Further, the weight tightening ring 36 has an inner engaging portion 362 and a groove (not numbered). The inner engaging portion 362 is formed on the side of the outer ring of the counterweight tightening ring 36, and the inner engaging portion 362 is specifically a ring groove; A gap is formed on the opening periphery of 3612, thereby increasing the function that the pressing outlet 3612 can be stretched elastically, so that the counterweight end 332 of the hose 33 can easily penetrate from the pressing inlet 3611 to the pressing outlet 3612; The appropriate length of the weighted end 332 of the tube 33 is to penetrate and protrude beyond the pressing outlet 3612, at which time the pressing outlet 3612 will surround the pressing and limit the sliding of the hose 33, whereby the hose 33 is clamped and positioned in the position. In the counterweight pressing hole 361 of the counterweight pressing ring 36 .

Further, the inner space of the counterweight member 34 is formed with an inner ring side surface corresponding to the outer ring side surface of the counterweight tightening ring 36 and a through hole 344 , and the outer engaging portion 343 is formed on the inner ring side surface of the counterweight member 34 . , and the outer engaging portion 343 is specifically a ring flange; the through hole 344 runs through the center of the counterweight 34 ; further, the hose 33 is clamped and positioned in the same position as the valve tightening ring 35 described above. Heavy pressing ring 36, That is, the weight tightening ring 36 and the hose 33 are combined into a combined unit 3633 . Thereby, when the hose 33 is connected to the counterweight 34, the counterweight tightening ring 36 and the hose 33 are first combined into a combined unit 3633, and then the hose weight end 332 of the combined unit 3633 is protruded from one side. The counterweight pressing ring 36 is pushed toward the inner space of the counterweight member 34, so that the inner engaging portion 362 (ring groove) of the counterweight pressing ring 36 can be firmly embedded in the outer engaging portion 343 (ring groove) of the counterweight pressing member 34. ring flange); and the protruding weight end 332 of the hose 33 is automatically inserted into the through hole 344 and protrudes out of the bottom of the weight piece 34.

The opposite ends of the aforementioned hard pipe 40 are a top end and a bottom end 41, the top end of the hard pipe 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 pipe 40 extends toward the bottom of the tank body 10; The tube 40 is sleeved on the outside of the hose 33 of the suction tube assembly 30 ; the bottom end 41 of the rigid tube 40 ends at the upper end of the weight 34 hanging down from the hose 33 . The length of the rigid tube 40 is more than half of the height D2 of the tank 10 (as shown in FIG. 1 ), so as to moderately limit the bending amount of the hose 33 , thereby ensuring that the tail end 32 of the suction tube assembly 30 can be quickly positioned and immersed in the liquid A . Further, the counterweight end 332 of the hose 33 penetrates downward and protrudes from the bottom end 41 of the hard pipe 40 , and there is a gap between the hose 33 protruding from the bottom end 41 of the hard pipe 40 and the top of the counterweight 34 . The exposed section 333 that can be moderately bent and stretched (as shown in FIG. 1 ); since the exposed hose 333 that can be moderately bent and extended is not sheathed by the hard tube 40 , the exposed hose 333 can be placed at the incision at the bottom end 41 of the hard tube 40 It can move or rotate freely outside, and the exposed hose 333 almost maintains the original soft and bendable extension characteristics; thus, the exposed hose 333 will abut against the incision of the bottom end 41 of the hard pipe 40, and the exposed hose 333 is suspended The hanging sagging counterweight 34 exhibits the effect of gravitational traction. At this time, the hanging sagging counterweight 34 can be used in an upright state, an inclined state in any direction, or in any direction with the spray can in hand. In the horizontal state and the tilted and inverted state at the same time, even when the liquid volume in the tank is only half or less, it can move and locate the liquid agent A immersed in the tank instantly and arbitrarily. The preferred material of the rigid pipe 40 is a rigid polyethylene (PE) straight pipe, and its inner diameter is slightly larger than the outer diameter of the hose; More specifically, the distance between the bottom end 41 of the rigid pipe 40 and the bottom of the tank body 10 is defined as a movable distance D1 (as shown in FIG. 1 ), and the ratio of the length of the movable distance D1 to the inner diameter of the tank body 10 is compared. It is preferably between 0.5 and 1 to further ensure that the counterweight 34 can drive the hose 33 to move quickly.

In this embodiment, the inner wall surface of the hard tube 40 and the outer wall surface of the hose 33 are spaced apart, so that the hard tube 40 can be sleeved and installed outside the hose 33 . The ratio of the inner diameter of the pipe 40 is between 0.3 and 0.8, so as to moderately limit the movable range of the hose 33 in the hard pipe 40 and maintain a proper clearance for easy installation; in addition, in other preferred embodiments, the hard pipe The ratio of the length of 40 to the height of the tank body 10 is between 0.5 and 0.8, so as to moderately limit the movable range of the flexible tube 33 in the hard tube 40, thereby further ensuring that the tail end 32 of the suction tube assembly 30 can be positioned and immersed in any rapid position. in Liquid A.

In other words, if the hard tube 40 is not provided in the present invention, when the user presses the spray head 50 of the spray can, the hanging weight member 34 is suspended by the hose 33 at this time, whether it is located under the liquid level of the liquid agent A or the liquid On the surface, they are easily affected by the propellant in the tank to dance or sag arbitrarily, so that the tail end 32 of the straw assembly 30 cannot be positioned and immersed in the liquid agent A, so the liquid agent A in the tank cannot be ejected. For example, when the user sprays insecticides with insecticides flying around, or sprays gangsters or personal harassers who threaten with force with a pepper spray can, because the user is in dynamic operation of the spray can, at this time the can is The counterweight 34 of 10 is prone to dance or sag, so that the tail end 32 of the pipette assembly 30 cannot be positioned and immersed in the liquid agent A, so that the tail end 32 of the pipette assembly 30 cannot absorb the liquid agent A; therefore, it protrudes from the bottom of the hard tube. The hose 33 at the end 41 and the top of the counterweight 34 must not be nested by the hard pipe 40, so that the exposed hose 333 of this section is pulled by the gravity of the counterweight 34 and can show moderate bending and stretching. , so that the tail end 32 of the pipette assembly 30 can be quickly positioned and immersed in the liquid agent A.

When the present invention is in use, when the tank body 10 is filled with liquid agent A and a propellant (not shown in the figure), the user presses the spray head 50 toward the tank body 10, so that the valve stem 24 of the valve assembly 20 is in an open state, and the propellant is in an open state. The pressure formed in the tank pushes the liquid agent A upward through the counterweight end 332 of the hose 33 into the valve body 23 , and then ejected from the spray port 51 of the spray head 50 through the liquid agent outlet 22 of the valve stem 24 . Further, the projectile The agent is preferably dimethyl ether (DME) or nitrogen (N2) of compressed gas, etc., and the liquid agent is the content of the product that has been formulated, such as insecticide or defense capsicum; in the first embodiment of this creation, please Referring to FIG. 4 and FIG. 5 , when the spray tank 10 is in a horizontal or inclined state, the liquid agent A in the tank 10 is pulled by gravity to flow from the bottom of the tank 10 toward the ground and concentrate to When the side wall of the tank body 10 is located, the counterweight 34 is also pulled by gravity to make the tail end 32 of the suction pipe assembly 30 move quickly towards the concentration of the liquid agent A, so that the suction port of the tail end 32 of the suction pipe assembly 30 can be kept. Submerged in the liquid agent A, thereby ensuring that the straw assembly 30 can still suck and spray the liquid agent in the tank body when the tank body 10 is nearly horizontal or inclined. The valve size in this first embodiment is 1 inch. The two most common standard valves are 1 inch (for large capacity) and 20 mm (20mm) (for small capacity).

Please refer to FIGS. 6 to 8 , the second embodiment of the present invention is substantially the same as the first embodiment, the difference is that the second embodiment is a small-capacity tank 10A, and the valve specification of the valve assembly 20A is 20 mm (20mm).

To sum up, the straw assembly 30 of the present invention has a hose 33 and a counterweight 34, and the counterweight 34 is disposed at the rear end of the hose 33; the counterweight end 332 of the hose 33 penetrates downward and protrudes from the The bottom end 41 of the hard pipe 40 has a bare hose 333 that can be moderately bent and stretched between the hose 33 protruding from the bottom end 41 of the hard pipe and the top of the counterweight 34, whereby the counterweight 34 is pulled by gravity The function makes the tail end 32 of the straw assembly 30 automatically move freely toward the ground; when the spray can is used in the upright state, the inclined state in any direction, the horizontal state in any direction, and the inclined and rotated state at the same time; even When the liquid volume in the tank is only half or less, the water suction port 332 of the counterweight end 332 of the suspended counterweight member 34 suspended by the hose 33 can be moved freely and positioned to be immersed in the bottom of the tank or close to the tank body and the tank In the liquid agent A at the corners where the bottom is connected, the present invention can almost completely spray the liquid agent in the tank body, thereby reducing waste caused by too much liquid agent remaining in the tank body that cannot be sprayed out.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those of ordinary knowledge, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to equivalent embodiments with equivalent changes by using the technical content disclosed above. The technical essence of the invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

10: Tank

11: Bottom wall

12: Internal space

20: Valve assembly

22: Liquid outlet

23: valve body

24: Stem

25: Fixed cover

30: Straw Assembly

31: head end

32: tail

33: Hose

331: valve end

332: Counterweight End

333: Bare Segment

34: Counterweights

341: Counterweight Ring Body

342: Buffer shell

344: Through hole

35: Valve tightening ring

36: Counterweight Tightening Ring

40: Hard Tube

41: Bottom

50: Nozzle

51: spout

A: liquid

D1: Active Distance

D2: height

Claims (10)

A high-pressure spray can, comprising: a tank body, which is a hollow body and has an installation opening; A valve assembly is sealed and fixed to the installation opening of the tank body, the valve assembly has a liquid agent inlet and a liquid agent outlet, the liquid agent inlet is located in the inner space of the tank body, and the liquid agent outlet is located in the liquid agent outlet outside the tank; the liquid agent inlet selectively communicates with the liquid agent outlet; a suction pipe assembly, which has a head end and a tail end that communicate with each other, the head end is connected to the liquid agent inlet of the valve assembly, and the tail end extends toward the bottom of the tank body and is adjacent to the bottom of the tank body; the The straw assembly has: a hose, the opposite ends of which are respectively a valve end and a weight end, the valve end is connected to the liquid agent inlet of the valve assembly, and the weight end extends toward the bottom of the tank body; A counterweight is arranged on the counterweight end of the hose. When the tank is shaking, the counterweight is pulled by gravity so that the tail end of the straw assembly can automatically move toward the ground; A rigid pipe, the top end of the rigid pipe is connected to the valve assembly, the bottom end of the rigid pipe extends toward the bottom of the tank body; the length of the rigid pipe exceeds half of the height of the tank body; the bottom end of the rigid pipe The distance from the bottom of the tank is defined as a moving distance less than or equal to the inner diameter of the tank; Wherein, the hose passes through the hard pipe, and the weight end of the hose protrudes downward from the bottom end of the hard pipe; Wherein, there is an exposed section between the hose protruding from the bottom end of the hard pipe and the top of the counterweight. The high-pressure spray can as claimed in claim 1, wherein the inner wall of the hard pipe and the outer wall of the hose are spaced apart, and the difference between the inner diameter of the hard pipe and the outer diameter of the hose is less than or equal to 1.4 mm . The high-pressure spray can according to claim 1 or 2, wherein the straw assembly further comprises a counterweight pressing ring, the counterweight pressing ring surrounds to form a pressing hole, and the pressing hole of the counterweight pressing ring is sleeved It is provided at the weight end of the hose, whereby the hose is clamped and positioned in the tightening hole of the weight tightening ring. The high-pressure spray can as claimed in claim 3, wherein the counterweight pressing ring has a groove, the groove penetrates through the ring wall of the counterweight pressing ring, and is at the end of a pressing outlet of the counterweight pressing ring A gap is formed on the periphery of the opening, thereby increasing the function that the pressing outlet can be elastically stretched. The high-pressure spray can as claimed in claim 4, wherein the diameter of the annular wall surface of the tightening hole of the weight tightening ring is tapered; wherein, when the weight tightening ring is not sleeved on the hose, the The opening diameter of the pressing outlet of the pressing hole of the counterweight pressing ring is smaller than the outer diameter of the hose. The high-pressure spray can of claim 3, wherein: An inner engaging portion is formed on the side of the outer ring of the counterweight tightening ring, which is a ring groove; An outer engaging portion is formed on the side surface of an inner ring of the counterweight, which is a ring flange; the outer engaging portion of the counterweight engages with the inner engaging portion of the counterweight tightening ring. The high-pressure spray can according to claim 1 or 2, wherein the suction pipe assembly further comprises a valve tightening ring, the valve tightening ring has a tightening hole, and the tightening hole of the valve tightening ring is sleeved on the soft outside the valve end of the tube, whereby the hose is clamped and positioned in the compression hole of the valve compression ring. A high-pressure spray can as claimed in claim 1 or 2, wherein: The counterweight is formed with a through hole; The hose passes through the through hole of the counterweight and is adjacent to the bottom of the tank body. The high-pressure spray can according to claim 1 or 2, wherein the counterweight member has a counterweight ring body and a buffer casing, and the buffer casing wraps the outer body of the counterweight ring. The high-pressure spray can of claim 1 or 2, wherein the hose is made of polyethylene, the inner diameter of the hose is between 0.75 and 0.85 mm, and the outer diameter of the hose is between 1.40 and 1.55 mm. mm.

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