Liquid jetting device and violence control equipment

Abstract

The utility model relates to the technical field of police instruments, in particular to a liquid jetting device and violence control equipment. The liquid spraying device comprises a spraying assembly and an emitting assembly, the spraying assembly comprises a liquid storage pipe, a nozzle and a piston, the nozzle and the piston are arranged at the front end and the rear end of the liquid storage pipe correspondingly, so that a liquid storage cavity is defined in the liquid storage pipe, and the liquid storage cavity is used for storing liquid; the launching assembly comprises a base and a gas releasing part, the base is provided with a gas guide passage, the rear end of the liquid storage pipe is communicated with the gas guide passage, and the gas releasing part is communicated with the gas guide passage and used for releasing high-pressure gas to the gas guide passage so as to push the piston to squeeze the liquid and enable the liquid to be sprayed out of the nozzle. According to the liquid jetting device and the violence control equipment, the high-pressure gas is released through the gas releasing part to push the piston to move, so that the liquid is squeezed to be jetted out of the nozzle, the liquid is jetted out at a high speed, the range is farther, better targeting performance is achieved, and the problems that the using effect is poor and an operator is prone to being accidentally injured are solved.

Description

Technical Field

[0001] The present application relates to the technical field of police equipment, and in particular to a liquid spraying device and a riot control device. Background Art

[0002] Tear gas is a non-lethal police device loaded with tear gas irritants that can be fired in the form of spray or grenade. Tear gas is used by police around the world and is widely used to disperse demonstrators in riots.

[0003] In the prior art, the tear gas bombs in the form of jets have poor targeting and a short range, which not only has a poor effect but also easily injures the operator by mistake. Utility Model Content

[0004] The embodiments of the present application aim to provide a liquid spraying device and a riot control device, so as to at least improve the problems of poor targeting and short range during spraying.

[0005] In order to solve the above technical problems, a technical solution adopted in the embodiment of the present application is: providing a liquid injection device, the liquid injection device includes an injection assembly and a launching assembly, the injection assembly includes a liquid storage tube, a nozzle and a piston, the nozzle and the piston are respectively arranged at the front end and the rear end of the liquid storage tube to form a liquid storage cavity in the liquid storage tube, and the liquid storage cavity is used to store liquid; the launching assembly includes a base and an air release piece, the base is provided with an air guide passage, the rear end of the liquid storage tube is connected to the air guide passage, the air release piece is connected to the air guide passage, and the air release piece is used to release high-pressure gas to the air guide passage to push the piston to squeeze the liquid and make the liquid spray out from the nozzle.

[0006] In some embodiments, the gas release member includes at least one of a gunpowder tube and a gas cylinder.

[0007] In some embodiments, the gas release member includes a positive conductive electrode and a negative conductive electrode, and when the positive conductive electrode and the negative conductive electrode are connected to a power source, the gas release member releases high-pressure gas.

[0008] In some embodiments, the base is provided with a first installation cavity, the first installation cavity is connected to the air guide passage, and the gas release piece is at least partially inserted into the first installation cavity; the positive conductive electrode is located outside the first installation cavity; a through hole is provided on the side wall of the first installation cavity, and the negative conductive electrode extends out of the first installation cavity through the through hole.

[0009] In some embodiments, the liquid injection device also includes a first shell, a positive conductive sheet and a negative conductive sheet, the positive conductive sheet is arranged in the first shell and passes through the first shell, and the negative conductive sheet is arranged in the first shell and passes through the first shell; the base is arranged in the first shell, the positive conductive electrode is connected to the positive conductive sheet, and the negative conductive electrode is connected to the negative conductive sheet.

[0010] In some embodiments, the liquid injection device further includes a first shell and a second shell, wherein the second shell is detachably disposed on the first shell; the first shell and the second shell are arranged to form a receiving cavity, and the injection assembly and the emission assembly are both disposed in the receiving cavity.

[0011] In some embodiments, the base is provided with a second installation cavity, the second installation cavity is communicated with the air guide passage, and the rear end of the liquid storage tube is inserted into the second installation cavity.

[0012] In some embodiments, the base is provided with an exhaust hole, and the exhaust hole is connected to the air guide passage; the launching assembly also includes a sealing plug, and the sealing plug seals the exhaust hole.

[0013] In some embodiments, the spray assembly further comprises sealing paper, which is sandwiched between the liquid storage tube and the nozzle and seals the front end of the liquid storage tube.

[0014] In order to solve the above technical problems, another technical solution adopted in the embodiment of the present application is: to provide a riot control device, wherein the riot control device includes the liquid injection device.

[0015] Different from the related art, the liquid injection device and anti-riot equipment of the embodiments of the present application release high-pressure gas through the gas release piece to drive the piston movement, thereby squeezing the liquid out of the nozzle, so that the liquid is ejected at high speed, which not only has a longer range but also has better targeting, thereby improving the problems of poor use effect and easy accidental injury to the operator.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0018] Figure 1 is a schematic structural diagram of a liquid injection device according to an embodiment of the present application;

[0019] Figure 2 is an exploded view of a liquid injection device according to an embodiment of the present application;

[0020] Figure 3 is another exploded view of the liquid injection device according to an embodiment of the present application;

[0021] Figure 4 yes Figure 2 Exploded view of the jet assembly and the launch assembly;

[0022] Figure 5 is a cross-sectional view of a liquid injection device according to an embodiment of the present application;

[0023] Figure 6 yes Figure 4 Schematic diagram of the structure of the gas release part;

[0024] Figure 7 It is a half-sectional view of a partial structure of the liquid ejection device according to an embodiment of the present application.

[0025] The reference numerals in the specific implementation manner are as follows:

[0026] 100. Liquid injection device;

[0027] 1. Spray assembly; 11. Liquid storage tube; 12. Nozzle; 13. Piston; 14. Liquid storage chamber; 15. Sealing paper;

[0028] 2. Emitting assembly; 21. Base; 211. Air guide passage; 212. First installation cavity; 213. Second installation cavity; 214. Exhaust hole; 215. Through hole; 216. Raised rib; 22. Gas release member; 221. Positive conductive electrode; 222. Negative conductive electrode; 23. Sealing plug;

[0029] 3. first housing; 31. first mounting hole; 32. second mounting hole; 33. mounting slot;

[0030] 4. Second shell; 41. Avoidance hole;

[0031] 5. Accommodating cavity; 6. Positive conductive sheet; 7. Negative conductive sheet. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0034] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meanings and therefore cannot be understood as limiting the scope of protection of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0037] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0038] The present application embodiment provides a liquid injection device 100, such as Figures 1 to 3 As shown, the liquid spraying device 100 includes a spraying component 1 and a firing component 2, wherein the spraying component 1 is used to store and spray the liquid, and the firing component 2 is used to drive the spraying component 1 to spray the liquid. The liquid may be a tear gas, such as pepper liquid, chili liquid, etc., which not only has a good tear-inducing effect, but is also harmless to the human body.

[0039] For the above-mentioned injection assembly 1, as Figure 4 and Figure 5 As shown, the spray assembly 1 includes a liquid storage tube 11, a nozzle 12 and a piston 13. The liquid storage tube 11 can be in the shape of a round tube. The nozzle 12 and the piston 13 are respectively arranged at the front end and the rear end of the liquid storage tube 11 to enclose a liquid storage chamber 14 in the liquid storage tube 11, and the liquid storage chamber 14 is used to store liquid. When the piston 13 moves toward the front end of the liquid storage tube 11, the liquid in the liquid storage chamber 14 is squeezed, so that the liquid is sprayed out from the nozzle 12.

[0040] The front end and the rear end of the liquid storage tube 11 are the opposite ends of the liquid storage tube 11 , and the front end is an end where the nozzle 12 is installed, and the rear end is an end where the piston 13 is installed.

[0041] It is understandable that if Figure 4 and Figure 5 As shown, the piston 13 can be cylindrical or pancake-shaped, the outer diameter of the piston 13 is slightly larger than the inner diameter of the liquid storage tube 11, and the piston 13 is made of an elastic material, such as rubber, so as to have a good sealing effect on the liquid storage tube 11; the liquid storage tube 11 and the nozzle 12 need to have a certain strength, and can be made of metal or plastic; the nozzle 12 can be trumpet-shaped, that is, the inner diameter of the end of the nozzle 12 away from the liquid storage chamber 14 is contracted, so that when the liquid passes through the nozzle 12, the flow rate increases sharply, thereby having a longer range.

[0042] In some embodiments, the nozzle 12 is threadedly connected to the liquid storage tube 11, that is, the nozzle 12 is detachably connected to the liquid storage tube 11, so that the nozzle 12 is easy to disassemble and assemble, and it is beneficial to enhance the connection strength and sealing effect between the nozzle 12 and the liquid storage tube 11. Optionally, a sealing ring is provided between the nozzle 12 and the liquid storage tube 11.

[0043] In some embodiments, Figure 4 and Figure 5As shown, the injection assembly 1 also includes a sealing paper 15, which is sandwiched between the liquid storage tube 11 and the nozzle 12, and seals the front end of the liquid storage tube 11, thereby improving the problem of liquid leakage from the nozzle 12, and the sealing paper 15 can also seal the liquid storage tube 11 and the nozzle 12. Optionally, the sealing paper 15 is a film with a certain elasticity, such as a plastic film. It is understandable that when the liquid in the liquid storage chamber 14 squeezes the sealing paper 15, and the pressure is greater than the limit that the sealing paper 15 can withstand, the sealing paper 15 will rupture, so that the liquid is ejected from the nozzle 12.

[0044] For the above-mentioned transmitting component 2, if Figure 4 and Figure 5 As shown, the launch assembly 2 includes a base 21 and a gas release member 22, the base 21 is provided with a gas guide passage 211, the rear end of the liquid storage tube 11 is connected to the gas guide passage 211, and the gas release member 22 is connected to the gas guide passage 211, and the gas release member 22 is used to release high-pressure gas to the gas guide passage 211. When the high-pressure gas is released into the gas guide passage 211, the piston 13 will be squeezed, and then the piston 13 will be pushed to squeeze the liquid, and the liquid will be ejected from the nozzle 12 under pressure. Since the gas release member 22 releases high-pressure gas, a large pressure will be applied to the piston 13, so that the liquid has a higher flow rate and a longer range when it is ejected from the nozzle 12, so as to improve the problems of poor targeting, short range and easy accidental injury to the operator in the prior art. Among them, the air pressure of the high-pressure gas is at least twice the standard atmospheric pressure (101.325kPa) to ensure that a large pressure can be applied to the piston 13. In the embodiment of the present application, the air pressure of the high-pressure gas is greater than or equal to 0.8MPa.

[0045] For the above base 21, if Figure 4 and Figure 5 As shown, the base 21 can be square. The base 21 can also be provided with a first installation cavity 212 and a second installation cavity 213, both of which are connected to the air guide passage 211. The first installation cavity 212 and the second installation cavity 213 are used to install the gas release member 22 and the liquid storage tube 11 respectively, so as to connect the gas release member 22 and the liquid storage tube 11 with the gas guide passage 211. Among them, the gas release member 22 is at least partially inserted into the first installation cavity 212, that is, the gas release member 22 can be fully or partially inserted into the first installation cavity 212; the second installation cavity 213 is adapted to the liquid storage tube 11, the second installation cavity 213 is cylindrical and the inner diameter is equal to the outer diameter of the liquid storage tube 11, and when the rear end of the liquid storage tube 11 is inserted into the second installation cavity 213, the second installation cavity 213 can be sealed. It can be understood that the base 21 needs to have a certain strength and can be made of metal or plastic.

[0046] In some embodiments, Figure 5As shown, the first installation cavity 212 and the second installation cavity 213 are respectively connected to the two ends of the air guide passage 211, and the first installation cavity 212, the second installation cavity 213 and the air guide passage 211 are a "U"-shaped passage as a whole. The air release member 22 and the liquid storage tube 11 are arranged side by side, which is beneficial to shorten the overall length of the liquid injection device 100.

[0047] It should be noted that: when installing the gas release member 22 and the liquid storage tube 11, the gas release member 22 and the liquid storage tube 11 may compress the gas in the first installation cavity 212, the second installation cavity 213 and the air guide passage 211, resulting in the problem that the gas release member 22 and the liquid storage tube 11 are difficult to install. To improve this problem, in some embodiments, the base 21 is provided with an exhaust hole 214, and the exhaust hole 214 is connected to the air guide passage 211; the launch assembly 2 also includes a sealing plug 23, and the sealing plug 23 seals the exhaust hole 214. By removing the sealing plug 23, the air guide passage 211 can be connected to the outside, thereby improving the problem that the gas release member 22 and the liquid storage tube 11 are difficult to install. In addition, the sealing plug 23 can also serve as an insurance for the liquid injection device 100. For example, when the liquid injection device 100 is stored and transported, the sealing plug 23 can be removed to reduce the safety risks and losses caused by the accidental triggering of the gas release member 22.

[0048] For the above-mentioned gas release member 22, Figure 4 and Figure 5 As shown, the gas release member 22 may be cylindrical, and when the gas release member 22 is installed in the first installation cavity 212, the outer circumferential surface of the gas release member 22 contacts the inner surface of the first installation cavity 212, so that the gas release member 22 seals the first installation cavity 212. Optionally, a sealing ring (not shown) is provided on the outer circumferential surface of the gas release member 22, and the sealing ring seals the gap between the gas release member 22 and the first installation cavity 212.

[0049] In some embodiments, the gas release member 22 includes at least one of a gunpowder tube and a gas tank. When the gunpowder tube and the gas tank are triggered, a large amount of high-pressure gas can be released. Optionally, the gas release member 22 can also be an air bag.

[0050] In some embodiments, Figure 6 As shown, the gas release member 22 includes a positive conductive electrode 221 and a negative conductive electrode 222. When the positive conductive electrode 221 and the negative conductive electrode 222 are connected to a power source, the gas release member 22 releases high-pressure gas. The gas release member 22 is triggered by an electrical signal, which is more convenient than a mechanical trigger, and is conducive to simplifying the structure of the liquid injection device 100. The triggering stability is higher and the triggering failure is less likely to occur. Optionally, the positive conductive electrode 221 and the negative conductive electrode 222 are both made of metal, such as copper.

[0051] When the gas release member 22 is installed in the first installation cavity 212, the positive conductive electrode 221 and the negative conductive electrode 222 can be both located outside the first installation cavity 212, that is, located at the end surface of the gas release member 22, or located at one end of the gas release member 22 extending out of the first installation cavity 212, so as to facilitate connection with an external power source.

[0052] In some other embodiments, such as Figure 6 and Figure 7 As shown, the positive conductive electrode 221 is located at the end surface of the gas release member 22, and the negative conductive electrode 222 is located at the outer peripheral surface of the gas release member 22, that is, when the gas release member 22 is installed in the first installation cavity 212, the positive conductive electrode 221 is located outside the first installation cavity 212, and the negative conductive electrode 222 is located inside the first installation cavity 212. In order to lead the negative conductive electrode 222 out of the first installation cavity 212, as shown in FIG. Figure 4 and Figure 7 As shown, a through hole 215 is formed on the side wall of the first installation cavity 212 , and the negative conductive electrode 222 extends out of the first installation cavity 212 through the through hole 215 , thereby facilitating the connection of the negative conductive electrode 222 with an external power source.

[0053] When installing the gas release member 22, the negative conductive electrode 222 is first separated from the main body of the gas release member 22, and then the main body of the gas release member 22 is inserted into the first installation cavity 212, and then the negative conductive electrode 222 is inserted into the through hole 215 and contacts the outer peripheral surface of the gas release member 22. Therefore, the negative conductive electrode 222 may not be fixed to the main body of the gas release member 22.

[0054] In some embodiments, Figures 1 to 3 As shown, the liquid injection device 100 also includes a first shell 3 and a second shell 4, and the second shell 4 is detachably arranged on the first shell 3, for example, connected by a snap-on buckle. The first shell 3 and the second shell 4 are arranged to form a receiving chamber 5, and the injection assembly 1 and the emission assembly 2 are both arranged in the receiving chamber 5 to fix and protect the injection assembly 1 and the emission assembly 2, so as to facilitate the storage and transportation of the liquid injection device 100. Among them, the first shell 3 and the second shell 4 can be in the shape of a shell with an opening at one end, and the openings of the first shell 3 and the second shell 4 are buckled with each other to form a receiving chamber 5. Optionally, the first shell 3 and the second shell 4 are roughly square, and the first shell 3 and the second shell 4 can be made of plastic. Optionally, the base 21 is arranged in the first shell 3 or in the second shell 4, or a part of it can be arranged in the first shell 3 and the other part can be arranged in the second shell 4.

[0055] In order to electrically connect the power source outside the accommodating chamber 5 with the gas release member 22 inside the accommodating chamber 5, in some embodiments, as Figure 2 and Figure 3As shown, the liquid injection device 100 further includes a positive conductive sheet 6 and a negative conductive sheet 7, the positive conductive sheet 6 is disposed in the first housing 3 and passes through the first housing 3, the negative conductive sheet 7 is disposed in the first housing 3 and passes through the first housing 3, the positive conductive sheet 6 is connected to the positive conductive electrode 221, and the negative conductive sheet 7 is connected to the negative conductive electrode 222, so that the positive conductive electrode 221 and the negative conductive electrode are led out of the accommodating cavity 5, so that the external power supply can trigger the gas release member 22 in the accommodating cavity 5. It can be understood that the positive conductive sheet 6 and / or the negative conductive sheet 7 can also be disposed in the second housing 4. Optionally, the positive conductive sheet 6 and the negative conductive sheet 7 are both made of metal, such as copper.

[0056] The positive electrode conductive sheet 6 and the negative electrode conductive sheet 7 can pass through the first shell 3 through the gap between the first shell 3 and the second shell 4, or can pass through the first shell 3 directly. Figure 2 As shown, the side wall of the first housing 3 is provided with a first mounting hole 31 and a second mounting hole 32, the positive electrode conductive sheet 6 is passed through the first mounting hole 31, and the negative electrode conductive sheet 7 is passed through the second mounting hole 32. Further, a plurality of first mounting holes 31 are provided, for example, two are provided, and the positive electrode conductive sheet 6 passes through the accommodating cavity 5 from the first first mounting hole 31 and passes through the accommodating cavity 5 from the other first mounting hole 31, so as to fix the positive electrode conductive sheet 6 to the first housing 3. Similarly, a plurality of second mounting holes 32 may also be provided, so as to fix the negative electrode conductive sheet 7 to the first housing 3.

[0057] In some embodiments, Figure 2 As shown, the inner wall of the first housing 3 is provided with a mounting groove 33, and the outer surface of the base 21 is provided with a convex rib 216. When the base 21 is arranged in the first housing 3, the convex rib 216 engages with the mounting groove 33 to slide the base 21 on the first housing 3. It can be understood that the number of the mounting groove 33 and the convex rib 216 can be one, and the inner wall of the first housing 3 and the mounting groove 33 need to cooperate to install the base 21 on the first housing 3; the number of the mounting groove 33 and the convex rib 216 can also be two, for example, the inner wall of the first housing 3 is provided with two mounting grooves 33, and the outer surface of the base 21 is provided with two convex ribs 216, the two mounting grooves 33 are arranged opposite to each other, the two convex ribs 216 are arranged back to back, and one convex rib 216 cooperates with one mounting groove 33, so that the base 21 is installed on the first housing 3 through the two mounting grooves 33; the number of the mounting groove 33 and the convex rib 216 can also be more than two, so that the stability of the base 21 installed on the first housing 3 can be increased.

[0058] In some embodiments, Figure 2As shown, the second housing 4 is provided with an avoidance hole 41 , which corresponds to the position of the nozzle 12 , and the nozzle 12 is partially inserted into the avoidance hole 41 , so that the liquid sprayed from the nozzle 12 can be sprayed out of the accommodating cavity 5 .

[0059] The embodiment of the present application further provides a riot control device (not shown), which includes a liquid spraying device 100. The riot control device has the structural features and beneficial effects of the liquid spraying device 100, which will not be described in detail here.

[0060] In some embodiments, the riot control device also includes a handle (not shown), and the liquid injection device 100 is detachably mounted on the handle. The handle is provided with a trigger (not shown) and a power supply (not shown). When the trigger is pressed, the power supply is connected to the positive conductive sheet 6 and the negative conductive sheet 7 to trigger the gas release member 22.

[0061] The liquid injection device 100 and the anti-riot equipment of the embodiment of the present application release high-pressure gas through the gas release member 22 to push the piston 13 to move, thereby squeezing the liquid to be ejected from the nozzle 12, so that the liquid is ejected at a high speed, which not only has a longer range, but also has better targeting, improving the problem of poor use effect and easy accidental injury to the operator. The nozzle 12 can be trumpet-shaped, and the inner diameter of the end of the nozzle 12 away from the liquid storage chamber 14 is contracted, which can further increase the range of the liquid. The injection assembly 1 also includes a sealing paper 15, which is sandwiched between the liquid storage tube 11 and the nozzle 12, and can not only seal the front end of the liquid storage tube 11, but also seal the liquid storage tube 11 and the nozzle 12. The base 21 is provided with an exhaust hole 214, and the exhaust hole 214 is connected to the air guide passage 211. The sealing plug 23 seals the exhaust hole 214. By removing the sealing plug 23, the problem that the gas release member 22 and the liquid storage tube 11 are difficult to install can be improved, and it can also be used as an insurance for the liquid injection device 100 to reduce the safety risks and losses caused by the accidental triggering of the gas release member 22.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A liquid injection device, characterized in that: include: The spray assembly comprises a liquid storage tube, a nozzle and a piston, wherein the nozzle and the piston are respectively arranged at the front end and the rear end of the liquid storage tube to enclose a liquid storage cavity in the liquid storage tube, and the liquid storage cavity is used to store liquid; The launching assembly includes a base and a gas release piece, wherein the base is provided with a gas guide passage, the rear end of the liquid storage tube is connected to the gas guide passage, and the gas release piece is connected to the gas guide passage, and the gas release piece is used to release high-pressure gas to the gas guide passage to push the piston to squeeze the liquid and cause the liquid to be ejected from the nozzle.

2. The liquid ejecting device according to claim 1, wherein: The gas release member includes at least one of a gunpowder tube and a gas cylinder.

3. The liquid ejecting device according to claim 1, wherein: The gas release member comprises a positive conductive electrode and a negative conductive electrode. When the positive conductive electrode and the negative conductive electrode are connected to a power source, the gas release member releases high-pressure gas.

4. The liquid ejecting device according to claim 3, wherein: The base is provided with a first installation cavity, the first installation cavity is communicated with the air guide passage, and the air release member is at least partially inserted into the first installation cavity; The positive conductive electrode is located outside the first mounting cavity; A through hole is formed on a side wall of the first installation cavity, and the negative conductive electrode extends out of the first installation cavity through the through hole.

5. The liquid ejecting device according to claim 4, characterized in that: The liquid injection device further comprises a first housing, a positive conductive sheet and a negative conductive sheet, wherein the positive conductive sheet is disposed in the first housing and passes through the first housing, and the negative conductive sheet is disposed in the first housing and passes through the first housing; The base is disposed in the first housing, the positive conductive electrode is connected to the positive conductive sheet, and the negative conductive electrode is connected to the negative conductive sheet.

6. The liquid ejecting device according to claim 1, wherein: The liquid injection device further comprises a first shell and a second shell, wherein the second shell is detachably disposed on the first shell; The first shell and the second shell are arranged to form a containing cavity, and the injection assembly and the emission assembly are both arranged in the containing cavity.

7. The liquid ejecting device according to claim 1, wherein: The base is provided with a second installation cavity, the second installation cavity is communicated with the air guide passage, and the rear end of the liquid storage tube is inserted into the second installation cavity.

8. The liquid ejecting device according to claim 1, wherein: The base is provided with an exhaust hole, and the exhaust hole is communicated with the air guide passage; The launching assembly further comprises a sealing plug, which seals the exhaust hole.

9. The liquid ejecting device according to claim 1, wherein: The spray assembly further comprises sealing paper, which is sandwiched between the liquid storage tube and the nozzle and seals the front end of the liquid storage tube.

10. A riot control device, characterized in that: The invention comprises the liquid ejecting device according to any one of claims 1 to 9.

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