Trigger type high-pressure spraying device

Abstract

The utility model relates to a trigger type high-pressure spraying device which solves the problems that in the prior art, the locking effect is poor, force needs to be applied continuously during spraying, operation is tedious, and automatic locking cannot be achieved. The device comprises a sliding sleeve, a cylinder body, a piston, a steel ball, a locking sliding sleeve, a deflector rod, a locking deflector rod, a reset deflector rod, a first compression spring, a second compression spring, an air nozzle, liquid, a top shaft, a one-way valve, a sealing ring, a guide belt and a high-pressure pneumatic device, the sliding sleeve is a triggering unit of the whole device, and linkage between the sliding sleeve and the locking sliding sleeve is achieved through the deflector rod; locking of the sliding sleeve is achieved through matching of the reset shifting rod and the sawtooth-shaped groove, automatic locking and unlocking of the piston are achieved through matching of the steel ball and the step on the locking sliding sleeve, the one-way valve is automatically ejected open through the ejection shaft so that gas in the high-pressure pneumatic device can be released, and spraying can be achieved only by sliding the sliding sleeve. And continuous spraying can be achieved without external force in the spraying process, operation is easy, the locking effect is stable, and the structure is compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to spray equipment technical field especially is related to a trigger type high pressure spray device. BACKGROUND

[0002] The existing high pressure spray device has two modes of using steel ball locking and rubber part locking, wherein the mode of using rubber part locking realizes locking by using the friction force of rubber and sealing surface, but the locking force is limited by the size of the friction force, so the locking force is limited, and the sealing part is easy to wear, and the mode of using steel ball locking is locked by inserting the male head and the female head together, the locking force is large, and most of the time, the switch needs to be continuously pressed during continuous spraying, and the spraying stops when the switch is released, which is inconvenient during long-term use. Therefore, it is urgent to design a trigger type high pressure spray device which can be automatically locked and has stable locking effect and simple operation. SUMMARY

[0003] To solve the problems of the existing high pressure spray device, the utility model provides a trigger type high pressure spray device, which only needs to slide the sliding sleeve to realize spraying and stable locking, realizes continuous spraying without the need of continuously applying external force, and only needs to reset the sliding sleeve and the piston by the reset lever and the locking lever when stopping spraying, which is simple in operation, high in efficiency, does not need to customize the locking seat, and is lower in cost.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A trigger type high pressure spray device, comprising a sliding sleeve, a cylinder body, a piston, a steel ball, a locking sliding sleeve, a lever, a locking lever, a reset lever, a first compression spring, a second compression spring, an air nozzle, a liquid, a top shaft, a one-way valve, a sealing ring, a guide belt and a high pressure pneumatic device;

[0006] The sliding sleeve, the cylinder body and the locking sliding sleeve are slidably connected with each other, one end of the cylinder body is fixed with the top shaft and the air nozzle located in front of the top shaft, the liquid is placed in the cavity between the air nozzle and the top shaft, and the air nozzle is in communication with the outside after penetrating through the sliding sleeve;

[0007] The first compression spring is arranged between the sliding sleeve and the cylinder body, the second compression spring is arranged between the locking sliding sleeve and the cylinder body, the reset lever is rotatably arranged on the outside of the sliding sleeve, and the bottom end of the reset lever is provided with a torsion spring;

[0008] The steel ball is arranged in a radial hole of the cylinder body, the piston is arranged in the cylinder body and in contact with the steel ball, two adjacent grooves are arranged on the outer cylindrical surface of the piston and matched with the steel ball, the cross sections of the two grooves are arc-shaped, the steel ball is in contact with the first groove when no spraying, the steel ball exits from the first groove and enters the second groove when spraying, the center of one end of the piston is provided with the one-way valve, the one-way valve is communicated with the high-pressure pneumatic device located at the other end of the piston, the sealing ring and the guide belt are arranged between the piston and the cylinder body;

[0009] The outer cylindrical surface of the locking sliding sleeve is provided with a sawtooth-shaped groove matched with the reset lever, the locking lever and the lever are arranged in the circumferential direction of the locking sliding sleeve, the locking lever is fixed outside the locking sliding sleeve and extends out after passing through the sliding sleeve, the lever is hinged with the locking sliding sleeve, one end of the lever is radially higher than the outer cylindrical surface of the locking sliding sleeve, and the other end abuts against the outer wall of the piston, two adjacent steps with different heights are sequentially arranged on the inner side of the end of the locking sliding sleeve close to the groove, the steel ball is in contact with the second step corresponding to the first groove when no spraying, a boss is arranged in the sliding sleeve, when spraying, the sliding sleeve slides towards the direction where the high-pressure pneumatic device is located, and the boss pushes the lever to rotate and in turn drives the locking sliding sleeve to move in the same direction, so that the end of the reset lever is embedded in the sawtooth-shaped groove and the position of the sliding sleeve is locked under the action of the torsional spring, the first compression spring and the second compression spring;

[0010] When spraying, the sliding sleeve drives the locking sliding sleeve to slide together towards the direction where the high-pressure pneumatic device is located, and the piston slides towards the direction where the top shaft is located until the top shaft opens the one-way valve, the high-pressure pneumatic device uses high-pressure gas to spray the liquid in the form of mist through the one-way valve and the air nozzle, in the sliding process of the piston, the steel ball exits from the first groove and enters the second groove, after the steel ball enters the second groove, the locking sliding sleeve slides towards the direction where the top shaft is located under the action of the second compression spring, so that the steel ball is in contact with the second step and the movement of the piston is limited;

[0011] When stopping spraying, the reset lever is pulled out of the sawtooth-shaped groove, the sliding sleeve slides towards the direction where the air nozzle is located under the action of the first compression spring, the locking lever is pulled towards the direction where the high-pressure pneumatic device is located, the steel ball exits from the second groove, the piston slides towards the direction where the high-pressure pneumatic device is located, the top shaft is separated from the one-way valve, and the spraying is stopped.

[0012] The utility model discloses a trigger type high pressure spraying device, wherein the sliding sleeve is the trigger unit of the whole device, linkage between the sliding sleeve and the locking sliding sleeve is realized through the shift lever, the locking of the sliding sleeve is realized through the cooperation of reset shift lever and sawtooth groove, the automatic locking and unlocking of the piston are realized through the cooperation of the steel ball and the step on the locking sliding sleeve, the gas in the high pressure pneumatic device is released by using the top shaft to open the one-way valve automatically, based on the cooperation of the sliding sleeve, cylinder body, piston, steel ball, locking sliding sleeve and one-way valve, the spraying can be realized only by sliding the sliding sleeve, and the continuous spraying can be realized without external force during spraying, the operation is simple, the locking effect is stable, the sealing property is strong, meanwhile, the device integrates the gas nozzle and the locking structure, the structure is compact, the cost is low, reset is fast and reliable, and can be applicable to various spraying equipment. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to describe the advantages, characteristics and technical processes of the utility model more clearly, the drawings used in the embodiments will be introduced in detail.

[0014] Figure 1 It is a whole sectional view of the trigger type high pressure spraying device.

[0015] Figure 2 It is a left side external view of the device. Figure 1

[0016] Figure 3 It is a partial sectional view along the line A-A in the figure. Figure 2

[0017] Figure 4 It is a partial sectional view along the line B-B in the figure. Figure 2

[0018] Mark explanation: 1, sliding sleeve, 2, cylinder body, 3, piston, 4, steel ball, 5, locking sliding sleeve, 6, shift lever, 7, locking shift lever, 8, reset shift lever, 9, first compression spring, 10, second compression spring, 11, gas nozzle, 12, liquid, 13, top shaft, 14, one-way valve, 15, sealing ring, 16, guide belt, 17, high pressure pneumatic device, 18, first groove, 19, second groove, 20, first step, 21, second step, 22, boss, 23, torsional spring. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be described in detail by combining with the drawings and preferred embodiments.

[0020] ​​​In order to make the advantages, characteristics and technical processes of the utility model more clear, the utility model will be described in detail in combination with the drawings in the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0021] In order to solve the problems of the traditional high-pressure spraying device, such as poor locking effect, needing continuous force to maintain spraying, complicated operation and unable to realize automatic locking, the utility model provides a trigger type high-pressure spraying device.

[0022] Referring to Figures 1-4 The trigger type high-pressure spraying device provided by the embodiment mainly comprises a sliding sleeve 1, a cylinder body 2, a piston 3, a steel ball 4, a locking sliding sleeve 5, a pulling rod 6, a locking pulling rod 7, a reset pulling rod 8, a first compression spring 9, a second compression spring 10, an air nozzle 11, a liquid 12, a top shaft 13, a one-way valve 14, a sealing ring 15, a guide belt 16 and a high-pressure pneumatic device 17. The sliding sleeve 1 and the cylinder body 2 are in sliding connection, the sliding sleeve 1 and the locking sliding sleeve 5 are in sliding connection, the locking sliding sleeve 5 and the cylinder body 2 are also in sliding connection, the left side of the locking sliding sleeve 5 is in contact with the steel ball 4 arranged in the radial hole of the cylinder body 2, the first compression spring 9 and the second compression spring 10 are arranged between the sliding sleeve 1 and the cylinder body 2 and between the locking sliding sleeve 5 and the cylinder body 2 respectively, the piston 3 can slide in the cylinder body 2 and is in contact with the steel ball 4, the one-way valve 14 is arranged at the center of one end of the piston 3, the high-pressure pneumatic device 17 is fixed at the other end, the one-way valve 14 and the high-pressure pneumatic device 17 are in communication, wherein the high-pressure pneumatic device 17 is not limited to a high-pressure gas cylinder or a gas pump and the like. The top shaft 13 is arranged at the left side of the cylinder body 2, the top shaft 13 can be arranged inside or outside the sliding sleeve 1, when an external force is applied to the sliding sleeve 1 or a force is applied to the piston 3, the sliding sleeve 1 slides to the right relative to the cylinder body 2, then the piston 3 can move to the left relative to the cylinder body 2, after the top shaft 13 collides with the valve core of the one-way valve 14, the one-way valve 14 is opened, then the high-pressure pneumatic device 17 can spray the liquid 12 in the form of mist through the air nozzle 11, after the external force is removed, the top shaft 13 and the one-way valve 14 are not separated, and continuous spraying can be realized. The specific implementation mode of the device is as follows:

[0023] The sliding sleeve 1, the cylinder body 2 and the locking sliding sleeve 5 are in sliding connection with each other, the locking sliding sleeve 5 is installed between the cylinder body 2 and the sliding sleeve 1, the piston 3 is arranged in the inside of the cylinder body 2, one end of the cylinder body 2 is fixed with the top shaft 13 and the air nozzle 11, the air nozzle 11 is opposite to the top shaft 13 and is located in front of the top shaft 13, the top shaft 13 corresponds to the valve core of the one-way valve 14, the air nozzle 11 is communicated with the outside after passing through the sliding sleeve 1, that is, can be communicated with the outside. The liquid 12 is placed in the cavity formed between the air nozzle 11 and the top shaft 13, and the cavity is communicated with the air nozzle 11. When the piston 3 moves, the top shaft 13 collides with the valve core to open the one-way valve 14, and the gas in the high-pressure pneumatic device 17 is discharged in the form of mist from the one-way valve 14 and the air nozzle 11 under the action of its own high pressure.

[0024] The sliding sleeve 1 is the trigger joint of the function of the device, and the outer part of the sliding sleeve 1 is provided with a reset lever 8 which can rotate around a fixed shaft, and the bottom end of the reset lever 8 is provided with a torsion spring 23, one end of the torsion spring 23 is fixed to the sliding sleeve 1, and the other end is connected to the reset lever 8, and the torsion spring 23 is used to provide the reset lever 8 with the force required to overcome the rotation under the action of the locking sleeve 5. A first compression spring 9 is arranged in the annular gap between the sliding sleeve 1 and the cylinder body 2, specifically in the cavity formed by the inner wall of the sliding sleeve 1 and the outer wall of the cylinder body 2, the first compression spring 9 is sleeved on the cylinder body 2, the inner wall of the sliding sleeve 1 is provided with an annular spring seat which is located at one end of the sliding sleeve 1 close to the gas nozzle 11, one end of the first compression spring 9 directly abuts on the side surface of the annular spring seat, and the outer wall of the cylinder body 2 is provided with an annular fixed boss 22 at the corresponding position, the annular fixed boss 22 is located in the middle part of the cylinder body 2, the other end of the first compression spring 9 abuts on the side surface of the annular fixed boss 22, so as to ensure that the first compression spring 9 will not be separated from the cylinder body 2 when compressed, and the axial direction of the first compression spring 9 is consistent with the sliding direction of the sliding sleeve 1, so as to provide the force required for the reset of the sliding sleeve 1. A second compression spring 10 is arranged between the locking sleeve 5 and the cylinder body 2, and the second compression spring 10 is also sleeved on the cylinder body 2, in order to better control the axial movement of the second compression spring 10 and avoid the spring from being separated, an annular spring mounting groove is arranged on the inner wall of one end of the locking sleeve 5 close to the high-pressure pneumatic device 17, the depth and diameter of the spring mounting groove are matched with the outer diameter of the second compression spring 10, one end of the second compression spring 10 is embedded in the spring mounting groove, and the side wall of the groove and the outer wall of the cylinder body 2 realize limiting, so as to ensure that the second compression spring 10 will not be separated from the locking sleeve 5 when compressed, and the corresponding position on the cylinder body 2 is provided with an annular limiting flange which is close to the end where the high-pressure pneumatic device 17 is located, and the other end of the second compression spring 10 directly abuts on the side surface of the annular limiting flange, and the axial movement of the second compression spring 10 is limited by the fixed structure of the cylinder body 2. The axial direction of the second compression spring 10 is consistent with the sliding direction of the locking sleeve 5, so as to provide the locking sleeve 5 with the force required for reset, that is, after the gas release is completed and the reset lever 8 is actuated, under the action of the restoring force of the second compression spring 10, the locking sleeve 5 can slide in the direction where the gas nozzle 11 is located to recover to the position before the gas release.

[0025] The piston 3 can slide in the cylinder 2, and the outer cylindrical surface of the piston 3 is provided with two adjacent annular grooves matched with the steel ball 4, and the cross section of the two grooves perpendicular to the length direction of the grooves is arc-shaped, so as to facilitate the steel ball 4 to exit from the groove. Optionally, the curvature radius of the arc-shaped of the two grooves is the same as the radius of the steel ball 4, so as to increase the contact area of the steel ball 4 and the groove, reduce the local stress concentration, and prolong the service life. The steel ball 4 is arranged in the radial hole of the cylinder 2, the axis of the radial hole is perpendicular to the axial direction of the cylinder 2, the position of the radial hole corresponds to the two grooves on the piston 3, the diameter of the radial hole is slightly larger than the diameter of the steel ball 4, and it is ensured that the steel ball 4 can freely move in the radial direction of the cylinder 2, but the axial displacement is limited by the hole wall. When not spraying, the steel ball 4 is in contact with the first groove 18 close to the top shaft, and the one-way valve 14 is installed at the center position of the piston 3, and at this time the valve core of the one-way valve 14 is in the closed state. When spraying, the steel ball 4 exits from the first groove 18 and enters the second groove 19, and at the same time the steel ball 4 is in contact with the second step 21 on the locking sleeve 5, and the piston 3 and the cylinder 2 cannot move relative to each other under the limiting action of the second groove 19 and the second step 21, that is, the locking of the piston 3 is realized. At least one sealing ring 15 and a guide belt 16 are arranged between the piston 3 and the cylinder 2, the sealing ring 15 is installed in the sealing groove on the piston 3, and the guide belt 16 is sleeved on the piston 3. The sealing ring 15 can prevent gas from leaking when entering the gas nozzle 11 through the cylinder 2, and the guide belt 16 can prevent the piston 3 and the cylinder 2 from being stuck during relative movement. The sealing ring 15 and the guide belt 16 can be standard products commonly used in the market, for example, the guide belt 16 is a cylindrical non-metallic part, which can effectively prevent metal-to-metal hard contact and prevent the parts from being stuck due to the contact gap. Further, the number of the sealing ring 15 and the guide belt 16 in the embodiment can be selected according to actual needs, for example, the number of the guide belt 16 can be set to two, and the two guide belts 16 are distributed at both ends of the piston 3, and the sealing ring 15 is located between the two guide belts 16, so as to realize smoother sliding between the piston 3 and the cylinder 2.

[0026] The outer cylindrical surface of the locking sleeve 5 is provided with a sawtooth-shaped groove for cooperating with the reset lever 8, and the locking lever 7 and the lever 6 are respectively arranged in the circumferential direction of the locking sleeve 5, and the locking lever 7 and the lever 6 are respectively located at different positions in the circumferential direction of the locking sleeve 5. The locking lever 7 is fixed outside the locking sleeve 5, and the locking lever 7 extends outward after passing through the sleeve 1, which is convenient for pushing. Optionally, as shown in FIG. 6, the locking lever 7 is provided with a plurality of sawtooth-shaped protrusions, and the sawtooth-shaped groove of the locking sleeve 5 is matched with the sawtooth-shaped protrusions of the locking lever 7. Figure 2As shown, the number of locking levers 7 is two, and the two locking levers 7 are symmetrically arranged on the locking sleeve 5, thereby improving the operation convenience and reliability of the device. The lever 6 is hinged to the locking sleeve 5, and the lever 6 penetrates the side wall of the locking sleeve 5, with one end being radially higher than the outer cylindrical surface of the locking sleeve 5, and the other end abutting against the outer wall of the piston 3, and the lever 6 and the piston 3 are in sliding contact. Two adjacent and different height steps are arranged in sequence on the inner side of the locking sleeve 5 close to the one end of the groove, which are respectively a first step 20 and a second step 21. When the gas is not released, the first step 20 corresponds to the first groove 18, as shown. Figure 3 To meet the requirement of the steel ball 4 exiting from the first groove 18, the height of the first step 20 is lower than the height of the second step 21. Further, to achieve more stable positioning of the steel ball 4, the surface of the second step 21 is arc-shaped, and the curvature radius of the arc-shaped surface can be the same as or different from the radius of the steel ball 4. The surface of the first step 20 can be arc-shaped or other shapes, as long as the gap between the first step 20 and the cylinder body 2 can meet the space required when the steel ball 4 exits from the first groove 18. When there is no spraying, the second step 21 is in contact with the steel ball 4, and the inside of the sleeve 1 is provided with a boss 22. When the high-pressure pneumatic device 17 is fixed, the sleeve 1 is slid by external force, or when the piston 3 is subjected to the force by pressing the high-pressure pneumatic device 17, the sleeve 1 slides relative to the cylinder body 2 to the direction of the high-pressure pneumatic device 17, the boss 22 in the inside of the sleeve 1 is in contact with the end of the lever 6 which is higher than the outer cylindrical surface of the locking sleeve 5, pushes the lever 6 to rotate, forces the lever 6 to rotate relative to the locking sleeve 5 around the hinge point (such as a pin or riveting structure), and since the other end of the lever 6 abuts against the outer wall of the piston 3, the sleeve 1 will drive the locking sleeve 5 to move in the same direction to the direction of the high-pressure pneumatic device 17, so that the end of the reset lever 8 is embedded in the sawtooth-shaped groove, and under the combined action of the torsional spring 23, the first compression spring 9 and the second compression spring 10, the reset lever 8 remains stationary, thereby locking the position of the sleeve 1.

[0027] When spraying, the sleeve 1 drives the locking sleeve 5 to slide to the direction where the high-pressure pneumatic device 17 is located under the action of an external force. When the locking sleeve 5 moves to the position where the steel ball 4 is out of the first groove 18 of the piston 3 and contacts the first step 20, the piston 3 can slide to the direction where the top shaft 13 is located relative to the cylinder 2, until the valve core in the one-way valve 14 contacts the top shaft 13, the one-way valve 14 is opened, and the gas can be released. The high-pressure pneumatic device 17 sprays the liquid 12 in the form of mist through the one-way valve 14 and the gas nozzle 11. After the rotating lever 6 is consistent with the height of the outer cylindrical surface of the locking sleeve 5, even if the sleeve 1 continues to move, it cannot drive the locking sleeve 5 to move, so the locking sleeve 5 can return to the state before spraying under the action of the second compression spring 10. At this time, the reset lever 8 on the sleeve 1 contacts the sawtooth-shaped groove of the locking sleeve 5, but in the process of sliding the sleeve 1 and the piston 3, the steel ball 4 has exited the first groove 18 and entered the second groove 19. After the steel ball 4 enters the second groove 19, the locking sleeve 5 slides to the direction where the top shaft 13 is located under the action of the second compression spring 10, so that the steel ball 4 contacts the second step 21, forming a radial constraint to prevent the piston 3 from returning, thereby limiting the movement of the piston 3, and the top shaft 13 and the one-way valve 14 are not separated, thereby realizing continuous spraying. The device of the embodiment utilizes the steps of the locking sleeve 5 cooperating with the steel ball 4 to automatically lock the position of the piston 3 after spraying, and can realize continuous spraying without continuous force, which is simple, convenient and reliable.

[0028] When stopping spraying and returning to the closed state, the operation is as follows: first, reset the reset lever 8 so that the reset lever 8 exits the sawtooth-shaped groove. The sleeve 1 slides to the direction where the gas nozzle 11 is located under the action of the first compression spring 9, and slides to the leftmost side. Then, release the reset lever 8, and then move the locking lever 7 to the direction where the high-pressure pneumatic device 17 is located. Pull the piston 3 to slide to the direction where the high-pressure pneumatic device 17 is located relative to the cylinder 2 under the action of an external force. The steel ball 4 exits the second groove 19 of the piston 3, the top shaft 13 and the valve core in the one-way valve 14 are separated, the spraying is stopped, and the locking lever 7 is released. The device of the embodiment can quickly release the locking state by moving the reset lever 8 and the locking lever 7, reset the piston 3 and stop spraying, which is simple and intuitive, and the reset is fast.

[0029] Further, the number of the steel ball 4, the rotating lever 6 and the reset lever 8 in the embodiment can be set to two. The two rotating levers 6 are symmetrically arranged on the locking sleeve 5, the two reset levers 8 are symmetrically arranged on the sleeve 1, and the two steel balls 4 are symmetrically arranged in the same groove on the piston 3, as shown in Figure 1 and Figure 2 It should be noted that Figure 1 and Figure 2The structure of the spray device of the utility model is displayed by taking only two steel balls 4, two push rods 6, two locking push rods 7 and two reset push rods 8 as an example, but in the actual implementation process, the steel ball 4, the push rod 6, the locking push rod 7 and the reset push rod 8 can be provided with only one or one of them or the number of one of them, and the person skilled in the art can select and design according to the actual needs. The symmetrical design can improve the reliability of the whole spray device, and can be operated in multiple directions, increasing the flexibility of operation.

[0030] Further, the end of the sliding sleeve 1 close to the gas nozzle 11 is arched, the top of the arch is provided with a platform, the platform is provided with a through hole, and the diameter of the through hole matches the outer diameter of the gas nozzle 11, so as to ensure that the gas nozzle 11 passes through. The structure of the sliding sleeve 1 can realize precise guidance, which is beneficial to improve the movement efficiency of the sliding sleeve 1.

[0031] The main purpose of the utility model is to design a trigger type high pressure spray device, which only needs to slide the sliding sleeve in the device during use, so as to release gas. After releasing the gas, continuous spraying can be realized without external force, which is simple to operate and can be applied to various spraying equipment or scenes, and has a wide range of applications.

[0032] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0033] The above-described embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, some modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A trigger-type high-pressure spray device characterized by comprising: It includes sliding sleeve (1), cylinder (2), piston (3), steel ball (4), locking sliding sleeve (5), lever (6), locking lever (7), reset lever (8), first compression spring (9), second compression spring (10), air nozzle (11), liquid (12), top shaft (13), one-way valve (14), sealing ring (15), guide belt (16) and high pressure pneumatic device (17); The sliding sleeve (1), the cylinder (2), the locking sliding sleeve (5) are slidably connected with each other, one end of the cylinder (2) is fixed with the top shaft (13) and the air nozzle (11) located in front of the top shaft (13), the liquid (12) is placed in the cavity between the air nozzle (11) and the top shaft (13), the air nozzle (11) communicates with the outside after passing through the sliding sleeve (1); The first compression spring (9) is arranged between the sliding sleeve (1) and the cylinder (2), the second compression spring (10) is arranged between the locking sliding sleeve (5) and the cylinder (2), the reset lever (8) is rotatably arranged outside the sliding sleeve (1), and the bottom end of the reset lever (8) is provided with a torsional spring (23); The steel ball (4) is arranged in the radial hole of the cylinder (2), the piston (3) is arranged in the cylinder (2) and in contact with the steel ball (4), two adjacent grooves are arranged on the outer cylindrical surface of the piston (3) and matched with the steel ball (4), the cross sections of the two grooves are arc-shaped, the steel ball (4) is in contact with the first groove (18) when not spraying, the steel ball (4) exits from the first groove (18) and enters the second groove (19) when spraying, the center of one end of the piston (3) is provided with the one-way valve (14), the one-way valve (14) communicates with the high pressure pneumatic device (17) located at the other end of the piston (3), the sealing ring (15) and the guide belt (16) are arranged between the piston (3) and the cylinder (2); The outer cylindrical surface of the locking sliding sleeve (5) is provided with a sawtooth-shaped groove matched with the reset lever (8), and the locking sliding sleeve (5) is provided with the locking lever (7) and the lever (6) in the circumferential direction, the locking lever (7) is fixed to the outside of the locking sliding sleeve (5) and extends out through the sliding sleeve (1), the lever (6) is hinged to the locking sliding sleeve (5), one end of the lever (6) is higher than the outer cylindrical surface of the locking sliding sleeve (5) in the radial direction, and the other end abuts against the outer wall of the piston (3), two adjacent first steps (20) and second steps (21) with different heights are sequentially arranged on the inner side of the locking sliding sleeve (5) near one end of the groove, the steel ball (4) is in contact with the second step (21) corresponding to the first groove (18) when not spraying, the sliding sleeve (1) is provided with a boss (22), when spraying, the sliding sleeve (1) slides towards the direction where the high-pressure pneumatic device (17) is located, and the boss (22) pushes the lever (6) to rotate and further drives the locking sliding sleeve (5) to move in the same direction, so that the end of the reset lever (8) is embedded in the sawtooth-shaped groove and locks the position of the sliding sleeve (1) under the action of the torsional spring (23), the first compression spring (9) and the second compression spring (10); When spraying, the sliding sleeve (1) drives the locking sliding sleeve (5) to slide together towards the direction where the high-pressure pneumatic device (17) is located, and the piston (3) slides towards the direction where the top shaft (13) is located, until the top shaft (13) opens the one-way valve (14), the high-pressure pneumatic device (17) sprays the liquid (12) in the form of mist through the one-way valve (14) and the air nozzle (11) by using high-pressure gas, during the sliding process of the piston (3), the steel ball (4) exits from the first groove (18) and enters the second groove (19), after the steel ball (4) enters the second groove (19), the locking sliding sleeve (5) slides towards the direction where the top shaft (13) is located under the action of the second compression spring (10), so that the steel ball (4) is in contact with the second step (21) and limits the movement of the piston (3); When stopping spraying, the reset lever (8) is actuated to exit from the sawtooth-shaped groove, the sliding sleeve (1) slides towards the direction where the air nozzle (11) is located under the action of the first compression spring (9), the locking lever (7) is actuated towards the direction where the high-pressure pneumatic device (17) is located, the steel ball (4) exits from the second groove (19), the piston (3) slides towards the direction where the high-pressure pneumatic device (17) is located under the action of external force, and the top shaft (13) is separated from the one-way valve (14), and the spraying is stopped.

2. A trigger-type high-pressure spray device according to claim 1, characterized by The number of the guide belts (16) is two, and the two guide belts (16) are distributed at both ends of the piston (3), and the sealing ring (15) is located between the two guide belts (16).

3. A trigger-type high-pressure spray device according to claim 1 or 2, characterized in that The sliding sleeve (1) is arched near one end of the air nozzle (11), and the top of the arch is provided with a platform, and the platform is provided with a through hole for the air nozzle (11) to pass through.

4. A trigger-type high-pressure spray device according to claim 1 or 2, characterized in that The top shaft (13) is located inside the sliding sleeve (1).

5. A trigger-type high-pressure spray device according to claim 1 or 2, characterized in that The number of the locking shift rods (7) is two, and the two locking shift rods (7) are symmetrically arranged on the locking sliding sleeve (5).

6. A trigger-type high-pressure spray device according to claim 1 or 2, characterized in that The number of the steel balls (4), the shift rods (6) and the reset shift rods (8) is two, the two shift rods (6) are symmetrically arranged on the locking sliding sleeve (5), the two reset shift rods (8) are symmetrically arranged on the sliding sleeve (1), and the two steel balls (4) are symmetrically arranged in the same groove on the piston (3).

7. A trigger-type high-pressure spray device according to claim 1 or 2, characterized in that The locking sliding sleeve (5) is provided with a spring mounting groove near one end of the high-pressure pneumatic device (17), one end of the second compression spring (10) is embedded in the spring mounting groove, an annular limiting flange is arranged on the cylinder body (2) at a corresponding position, and the other end of the second compression spring (10) abuts against the side surface of the annular limiting flange.

8. A trigger-type high-pressure spray device according to claim 1 or 2, characterized in that The curvature radius of the arc is the same as the radius of the steel ball (4).

9. A trigger-type high-pressure spray device according to claim 1 or 2, characterized in that The surface of the second step (21) is arc-shaped.

10. A trigger-type high-pressure spray device according to claim 1 or 2, characterized in that The high-pressure pneumatic device (17) is a high-pressure gas cylinder or a gas pump.

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