sprayer

Abstract

The present invention provides a sprayer, comprising a barrel, provided with a connection port, the connection port having an axial direction; a main unit, comprising a gas generating mechanism; a gas outlet end of the gas generating mechanism being equipped with a connector that can be inserted into the connection port and can move in the connection port along the axial direction, the connector comprising an air guide channel connecting the gas outlet end of the gas generating mechanism and the barrel, and a first stop portion provided on the outer wall thereof; a stop portion having one end detachably connected to the barrel and the other end provided with a second stop portion that can cooperate with the first stop portion; when the stop portion is connected to the barrel, the stop portion and the barrel are fixed at least along the axial direction; when the connector is in a working position in the connection port, the first stop portion and the second stop portion cooperate to inhibit the connector from moving in the connection port in a direction away from the barrel. The sprayer of the embodiment of the present invention can adapt a main unit to a variety of different barrels, and the main unit has good versatility.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid spraying equipment, in particular to a sprayer. Background Art

[0002] Sprayers are typically used to apply liquids, including but not limited to pesticides, herbicides, fungicides, insecticides, fertilizer solutions, nutrient solutions, etc., to a target area for purposes such as ground maintenance, supporting crop growth, and pest control. In a known embodiment, the sprayer may include a main unit equipped with a gas generating mechanism and a cylinder for containing the liquid. During use, the main unit is connected to the cylinder, a control switch is activated, and the gas generating mechanism is operated to fill the cylinder with high-pressure gas, thereby pressurizing the liquid contained in the cylinder. When the air pressure in the cylinder exceeds a certain value, the liquid in the cylinder is ejected through a nozzle and applied to the target area, completing the spraying operation.

[0003] However, the main unit in existing sprayers is generally only compatible with one corresponding cartridge model. If multiple cartridge models are required, a main unit corresponding to each cartridge model must be configured. As a result, the main unit cannot be adapted to multiple cartridge models, resulting in poor versatility. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, an embodiment of the present invention provides a sprayer, which can adapt one host to a variety of different cylinders, and the host has better versatility.

[0005] In order to achieve the above objectives, the present invention provides the following technical solutions.

[0006] A sprayer comprising:

[0007] The cylinder is provided with a connection port, wherein the connection port has an axial direction;

[0008] The main unit includes a gas generating mechanism; the gas generating mechanism has a connecting piece connected to the gas outlet end thereof, which can be inserted into the connecting port and moved along the axial direction within the connecting port; the connecting piece includes a gas guide channel connecting the gas outlet end of the gas generating mechanism and the cylinder, and a first stopper provided on the outer wall thereof;

[0009] A stop-recess mechanism, one end of which is detachably connected to the cylinder, and the other end of which is provided with a second stop-recess portion that cooperates with the first stop-recess portion; when the stop-recess mechanism is connected to the cylinder, the stop-recess mechanism and the cylinder are fixed at least along the axial direction; when the connecting member is in the working position in the connecting port, the first stop-recess portion cooperates with the second stop-recess portion to inhibit the connecting member from moving in the connecting port in a direction away from the cylinder.

[0010] Preferably, the anti-retraction mechanism includes an adapter detachably connected to the cylinder and a anti-retraction member connected to the adapter; and the second anti-retraction portion is provided on the anti-retraction member.

[0011] Preferably, the retaining member is connected to a retaining ring, and the second retaining portion is provided on the inner wall of the retaining ring;

[0012] The first retaining portion is an external thread formed on the outer wall of the connecting member, and the second retaining portion is an internal thread formed on the inner wall of the retaining ring; or

[0013] The first stopping portion is a first stopping tooth formed on the outer wall of the connecting member and extending obliquely downward, and the second stopping portion is a second stopping tooth formed on the inner wall of the stopping ring and extending obliquely downward.

[0014] Preferably, the barrel comprises a barrel body, a bottleneck structure provided on the barrel body and necked radially inward, and a pot mouth structure provided on the bottleneck structure and expanding radially outward; the connecting port is formed in the bottleneck structure;

[0015] The end of the adapter facing away from the retaining member is connected with a snap ring, and the snap ring is detachably sleeved outside the bottleneck structure and abuts against the lower end of the pot mouth structure.

[0016] Preferably, the clamping ring includes a plurality of sector rings, and the plurality of sector rings can be enclosed and spliced to form the clamping ring.

[0017] Preferably, the transition member includes a radial transition portion correspondingly connected to the multiple sector rings and an axial transition portion correspondingly connected to the multiple radial transition portions; the multiple sector rings are respectively arranged at the ends of the multiple radial transition portions facing away from the axial transition portion, and the axial transition portion and the retaining member can be fixedly connected at least along the axial direction.

[0018] Preferably, a sealing member is provided on the outside of the connecting member, and the sealing member seals the gap between the connecting member and the connecting port when the connecting member is in the working position.

[0019] Preferably, a pressing block is provided on the connecting member; when the connecting member is in the working position, the pressing block presses the sealing member tightly between the pressing block and the connecting port.

[0020] Preferably, the pressing block has a necked portion and a circumferentially extended flange located above the necked portion, and the sealing member is sleeved outside the necked portion and abuts against the lower end of the circumferentially extended flange.

[0021] Preferably, the radial dimension of the necked portion is not greater than the diameter of the connecting port, and the radial dimension of the circumferentially extended flange is greater than the diameter of the connecting port;

[0022] When the connector is in the working position, the necked portion is embedded in the connection port, the circumferentially extended flange blocks the outer end surface of the connection port, and the sealing member is pressed tightly between the circumferentially extended flange and the inner wall of the connection port.

[0023] Preferably, the pressing block is sleeved outside the connecting member; when the connecting member rotates circumferentially in the connecting port, the pressing block and the sealing member are stationary relative to the connecting port, and the pressing block and the sealing member do not rotate together with the connecting member.

[0024] Preferably, the outer wall of the connecting member is provided with a pushing step located above the pressing block, and the pushing step abuts against the upper end surface of the circumferentially extended flange.

[0025] When the main unit is operated to move the connector along the axis in the connection opening of the cylinder to the working position, the retaining mechanism is fixed to the cylinder at least along the axis. The first retaining portion and the second retaining portion cooperate to prevent the connector from moving away from the cylinder in the connection opening. Thus, the retaining mechanism secures the connector in the connection opening and maintains it in the working position, preventing it from separating from the connection opening.

[0026] Furthermore, since the retaining mechanism is detachably connected to the barrel, when the main unit needs to be adapted to a different model of barrel, the retaining mechanism can be simply removed from the current barrel and reattached to the new barrel. The connector can then be fixed in place within the connection port of the other barrel, allowing the main unit to be adapted to different models of barrels. This allows a single main unit to be adapted to multiple models of barrels, improving the main unit's versatility.

[0027] With reference to the following description and the accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be employed. It should be understood that the scope of the embodiments of the present invention is not limited thereby.

[0028] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0029] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only schematic and are used to help understand the present invention, and do not specifically limit the shapes and proportional dimensions of the components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the specific circumstances under the guidance of the present invention. In the drawings:

[0031] Figure 1 Schematic diagram of the structure of a sprayer according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of the structure of the barrel in the sprayer shown;

[0033] Figure 3 for Figure 1 A schematic diagram of the structure of the connecting member in the sprayer shown;

[0034] Figure 4 for Figure 1 A schematic diagram of the structure of the anti-retraction mechanism in the sprayer shown;

[0035] Figure 5 for Figure 4 A schematic top view of the anti-retraction mechanism shown;

[0036] Figure 6 for Figure 4 A schematic structural diagram of a stop member in the stop mechanism shown;

[0037] Figure 7 A schematic diagram of the assembly structure of the anti-retraction mechanism and the connecting parts;

[0038] Figure 8 for Figure 1 Schematic diagram of the assembly breakdown structure of the pressure block and seal in the sprayer shown. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0040] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] In this specification, the direction of the sprayer of the embodiment of the present invention facing away from the ground in normal use is defined as "front", and the opposite direction, or the direction pointing to or facing the ground is defined as "rear". More specifically, Figure 1 The upward direction indicated in the figure is defined as "up". Figure 1 The downward direction indicated in FIG. 1 is defined as “down”.

[0043] It is worth noting that the definitions of various directions in this specification are only for the convenience of explaining the technical solution of the present invention, and do not limit the directions of the sprayer of the embodiment of the present invention in other scenarios including but not limited to use, testing, transportation and manufacturing, which may cause the orientation of the sprayer to be reversed or the position to be changed.

[0044] like Figure 1 As shown, the sprayer of the embodiment of the present invention mainly comprises two parts, namely a main body 1 and a barrel 2. The two parts are detachably connected via a connector 3.

[0045] The host 1 may include a housing 101 and a gas generating mechanism for generating high-pressure gas housed in the housing 101. The connector 3 may be connected to the gas outlet of the gas generating mechanism. Figure 3 As shown, the connecting member 3 is roughly a hollow rod-shaped structure, which has an air guide channel 302, connecting the air outlet end of the gas generating mechanism and the cylinder 2, and is used to introduce the high-pressure gas generated by the gas generating mechanism into the cylinder 2 to apply pressure to the liquid in the cylinder 2, so that the liquid is ejected through the nozzle or nozzle connected to the cylinder 2.

[0046] In one feasible embodiment, the gas generating mechanism can be manually operated and include a manual air pump. The outlet of the manual air pump forms the outlet end of the gas generating mechanism, and the piston rod of the manual air pump can be connected to an operating member. During use, the operator squeezes the operating member to drive the piston to move within the piston cylinder, generating high-pressure gas.

[0047] Of course, the gas generating mechanism is not limited to the above-mentioned manual operation structure, and can also be an electric drive structure. Figure 1 As shown, the electric drive structure may include a motor 102 and an air pump 103 (electric air pump) driven by the motor 102. The air outlet of the electric air pump 103 forms the outlet end of the gas generating mechanism. The outlet end may be connected to a connecting elbow 108. The upper end of the connector 3 may be provided with a plug connector 303. The plug connector 303 can be pluggable and inserted into the connecting elbow 108, thereby achieving communication between the outlet end of the electric air pump 103 and the cylinder 2. In addition, a reduction mechanism 104 (e.g., gears of different diameters) and a crank slider mechanism 105 may be provided between the motor 102 and the air pump 103, thereby converting the high-speed rotational motion of the motor 102 into the low-speed linear reciprocating motion of the piston of the air pump 103.

[0048] Furthermore, the housing 101 may be provided with a battery pack connector 109 for removably connecting the battery pack. The housing 101 may house a control module, which is electrically connected to the motor 102, the battery pack connector 109, and a microswitch provided on the housing 101. The control module generates a start / stop signal to control the start / stop of the motor 102 based on the activation of the microswitch. The start / stop signal is then incorporated into the drive information and transmitted to the motor 102 to control the start / stop of the motor 102.

[0049] In addition, the main unit 1 may be equipped with a pressure sensor 106 connected to the control module for detecting the gas pressure within the cylinder 2. A detection channel 107 of the pressure sensor 106 may communicate with the interior of the cylinder 2 via an adapter elbow 108. When the pressure sensor 106 detects that the gas pressure within the cylinder 2 exceeds a set upper threshold, the control module controls the motor 102 to stop and cease further pressurization of the cylinder 2. After a certain period of spray operation, the pressure within the cylinder 2 decreases. When the pressure sensor 106 detects that the gas pressure within the cylinder 2 has dropped to a set lower threshold, the control module controls the motor 102 to operate and replenish the pressure within the cylinder 2.

[0050] The cylinder 2 may be equipped with a pressure relief valve, either directly on the sidewall of the cylinder 2 or on the nozzle. After the spray operation is complete, residual pressure in the cylinder 2 can be manually released by operating the pressure relief valve. This prevents the main unit 1 and cylinder 2 from being ejected due to the high pressure inside the cylinder 2 when they are subsequently disassembled.

[0051] The connector 3 connects the gas generating mechanism to the cylinder 2 and connects the main unit 1 to the cylinder 2. One end (upper end) of the connector 3 is connected to the gas outlet of the gas generating mechanism, and the other end (lower end) extends to the outside of the housing 101 for connection to the cylinder 2.

[0052] The cylinder 2 is provided with a connection port 201 for the connection member 3 to pass through. The connection port 201 has an axial direction, such as Figure 1 and Figure 2 As shown, the connection port 201 can be provided at the upper end of the cylinder 2, and the axial direction can be Figure 1 and Figure 2 The outer diameter of the connecting member 3 is not larger than the diameter of the connecting port 201, so that the connecting member 3 can be movably inserted into the connecting port 201 and can move up and down along the axis in the connecting port 201, and can also rotate around the axis in the connecting port 201.

[0053] In this embodiment, the connector 3 can be fixed to the main unit 1 in both the circumferential and axial directions. Furthermore, the lower end of the connector 3 can extend outside the main unit 1. This allows the operator to simply grasp the housing 101 of the main unit 1 and apply a rotational or pressing force to the housing 101, causing the connector 3 to rotate or move axially within the connection port 201.

[0054] In order to enable a host 1 to be compatible with a variety of different types of cylinders 2, and to enable a host 1 to be applicable to multiple cylinders 2, the embodiment of the present invention uses an external anti-retraction mechanism 10 to achieve a detachable connection between the host 1 and the cylinder 2. In this embodiment, the so-called model of the cylinder 2 can include the specifications of the cylinder 2 (including volume, height, maximum radial size, etc.), capacity, and the caliber of the connecting port 201. Usually, the calibers of the connecting ports 201 configured for cylinders 2 of different models are different. However, the calibers of the connecting ports 201 of the various different types of cylinders 2 that are compatible with the same host 1 are not greater than the outer diameter of the connecting member 3. In this way, the connecting member 3 can be moved or rotated in the connecting ports 201 of these cylinders 2.

[0055] like Figure 3 and Figure 4 As shown, the outer wall of the connecting member 3 may be provided with a first stop portion 301, and one end of the stop mechanism 10 (such as Figure 1 The lower end shown in FIG) is detachably connected to the cylinder 2, and the other end (as shown Figure 1 The upper end of the cylinder 2 is provided with a second stop portion 1002 that can cooperate with the first stop portion 301. When the stop mechanism 10 is connected to the cylinder 2, it is at least in the axial direction (such as Figure 1When the connector 3 is in the working position in the connection port 201 , the first stopper 301 cooperates with the second stopper 1002 to prevent the connector 3 from moving away from the cylinder 2 in the connection port 201 .

[0056] Thus, when the main unit 1 is operated to move the connector 3 along the axial direction in the connection port 201 of the cylinder 2 to the working position, the retaining mechanism 10 is fixed to the cylinder 2 at least along the axial direction, and the first retaining portion 301 cooperates with the second retaining portion 1002 to prevent the connector 3 from moving away from the cylinder 2 in the connection port 201. Thus, the retaining mechanism 10 secures the connector 3 in the connection port 201 and maintains it in the working position, preventing it from separating from the connection port 201.

[0057] Furthermore, since the retaining mechanism 10 is detachably connected to the barrel 2, when the main unit 1 needs to be adapted to a different model of barrel 2, the retaining mechanism 10 can be simply removed from the current barrel 2 and reattached to the new barrel 2. The connector 3 can then be fixed in position within the connecting port 201 of the other barrel 2, thereby enabling the main unit 1 to be adapted to different models of barrels 2. In this way, one main unit 1 can be adapted to multiple models of barrels 2, thereby improving the versatility of the main unit 1.

[0058] When the connector 3 moves axially within the connection port 201, the connector 3 simultaneously moves relative to the retaining mechanism 10, thereby driving the first retaining portion 301 on the connector 3 and the second retaining portion 1002 on the retaining mechanism 10 to move relative to each other, achieving engagement. After the connector 3 moves to the working position within the connection port 201, the engagement of the first retaining portion 301 and the second retaining portion 1002 inhibits upward movement of the connector 3.

[0059] Combine Figure 4 and Figure 7 As shown, in this embodiment, the backstop mechanism 10 may include an adapter 4 detachably connected to the cylinder 2 and a backstop 5 connected to the adapter 4. The second backstop portion 1002 is provided on the backstop 5. Furthermore, the backstop 5 may be connected to a backstop ring 7, and the second backstop portion 1002 may be provided on the inner wall of the backstop ring 7.

[0060] The adapter 4 can be connected to the cylinder 2 by means of the special structure of the cylinder 2. Figure 1 and Figure 2 As shown, the barrel 2 may include a barrel body 202, a bottleneck structure 203 provided on the barrel body 202 and radially inwardly necked, and a pot mouth structure 204 provided on the bottleneck structure 203 and radially outwardly expanded; the connecting port 201 may be formed in the bottleneck structure 203. Figure 5As shown, the end of the adapter 4 facing away from the retaining member 5 can be connected to a snap ring 6, which is detachably mounted outside the bottleneck structure 203 and abuts against the lower end of the mouth structure 204. In this way, when the snap ring 6 is mounted outside the bottleneck structure 203, it can be axially limited by the barrel 202 and the mouth structure 204.

[0061] To achieve a detachable connection between the adapter 4 and the barrel 2, the snap ring 6 may include multiple sector rings 601, which can be enclosed and spliced to form the snap ring 6. To prevent interference between the adapter 4 and the pot mouth structure 204, the adapter 4 may include radial adapter portions 401 correspondingly connected to the multiple sector rings 601, and axial adapter portions 402 correspondingly connected to the multiple radial adapter portions 401. The axial adapter portion 402 is fixedly connected to the retaining member 5 at least along the axial direction.

[0062] like Figure 4 and Figure 7 As shown, the adapter 4 can be roughly in the shape of a bend or "L." The radial adapter portion 401 extends radially, with its outer end located outside the edge of the pot mouth structure 204. The axial adapter portion 402 can be located at the outer end of the radial adapter portion 401. Preferably, the radial adapter portion 401 and the axial adapter portion 402 are integrally constructed. Specifically, the outer end of the radial adapter portion 401 can be bent upward to form the axial adapter portion 402. This prevents interference between the adapter 4 and the pot mouth structure 204.

[0063] The number of sector rings 601 can be set according to actual conditions. The central angle of each sector ring 601 can be 360 / n°, where n is the number of sector rings 601. Thus, when multiple sector rings 601 are assembled, a complete annular retaining ring 6 can be formed. The number of adapters 4 is equal to the number of sector rings 601, and the multiple sector rings 601 are respectively disposed at the ends, i.e., the inner ends, of the multiple radial adapter portions 401 facing away from the axial adapter portion 402. Thus, the multiple adapters 4 hold the multiple sector rings 601 in place and enclose them outside the bottleneck structure 203 of the cylinder 2, defining the retaining ring 6. By separating the multiple sector rings 601 from the bottleneck structure 203 of the cylinder 2, the adapters 4 can be removed from the cylinder 2.

[0064] Combine Figure 6 As shown, the retaining member 5 can be rod-shaped and can be multiple, corresponding to the number of the multiple axial transition portions 402. The multiple retaining members 5 are connected to the outer wall of the retaining ring 7 and are evenly arranged along the circumference. The retaining members 5 and the axial transition portions 402 are fixed at least along the axial direction. Thus, the adapter 4 can be axially fixed by the cylinder 2 and the retaining members 5. The adapter 4 can then serve as an axial fixing member to axially fix the connecting member 3.

[0065] Of course, the retaining member 5 can also be plate-shaped, and the plate-shaped retaining member 5 can be provided with an opening, and the retaining ring 7 can be disposed in the opening. Alternatively, if the retaining member 5 is plate-shaped and has an opening, the retaining ring 7 does not need to be disposed in the opening, and the second retaining portion 1002 can be directly disposed on the inner wall of the opening.

[0066] In order to enable the plurality of sector rings 601 to switch freely between the enclosed state and the separated state, the adapter 4 can be detachably connected to the retaining member 5 , or the adapter 4 can be rotated outward relative to the retaining member 5 .

[0067] like Figure 6 As shown, in a feasible embodiment, the adapter 4 and the retaining member 5 can be detachably connected in such a manner that the retaining member 5 is provided with a mounting hole 502 for the axial adapter portion 402 to pass through, and a first pin hole connected to the mounting hole 502. The mounting hole 502 can be a through hole that passes through the upper and lower surfaces of the retaining member 5, and the first pin hole can be a blind hole that passes through the outer wall of the retaining member 5 and is connected to the mounting hole 502. A pin shaft 503 is inserted through the first pin hole in a pluggable manner. The pin shaft 503 passes through the mounting hole 502 in the axial adapter portion 402 and presses against the side wall of the axial adapter portion 402, thereby fixing the axial adapter portion 402 in the mounting hole 502. By pulling the pin shaft 503 out of the first pin hole, the axial adapter portion 402 can be withdrawn from the mounting hole 502, thereby realizing the disassembly of the adapter 4 and the retaining member 5.

[0068] In this embodiment, the mounting hole 502 can further open outward, so that the axial transition portion 402 can enter the mounting hole 502 through the outer opening and can move horizontally in the mounting hole 502 to adapt to the bottleneck structures 203 of different outer diameters of different cylinders 2.

[0069] Alternatively, based on the above embodiment, a second pin hole may be provided in the axial transition portion 402, and the second pin hole may be a through hole that passes through the left and right side walls of the axial transition portion 402. When the axial transition portion 402 is inserted into the mounting hole 502, the second pin hole corresponds to the first pin hole, and the pin shaft 503 is inserted and removed from the first pin hole and the second pin hole. In this way, by inserting the axial transition portion 402 into the mounting hole 502, aligning the second pin hole with the first pin hole, and then inserting the pin shaft 503 into the second pin hole and the first pin hole, the stop member 5 and the adapter 4 can be assembled. By pulling the pin shaft 503 out of the second pin hole and the first pin hole, the axial transition portion 402 can be withdrawn from the mounting hole 502, thereby achieving disassembly of the two.

[0070] like Figure 6As shown, the pin 503 can be a U-shaped pin with two relatively parallel pin forks. The number of the first pin hole and the second pin hole can correspond to two respectively, and the two pin forks of the pin 503 can be respectively inserted into the two first pin holes and the second pin holes.

[0071] When the barrel 2 connected to the main body 1 needs to be replaced, the pin 503 can be pulled out to disassemble the adapter 4 and the retaining member 5. Subsequently, the adapter 4 can be removed to separate the sector ring 601 connected to the inner end of the radial adapter 401 from the bottleneck structure 203 of the barrel 2, thus completing the disassembly of the adapter 4 and the barrel 2.

[0072] In another embodiment, the retaining member 5 and the adapter 4 can be rotatably connected by a notch formed at the outer end of the retaining member 5, into which the upper end of the axial adapter portion 402 is inserted and connected to the outer end of the retaining member 5 via a rotating shaft. By moving the adapter 4 outward, the adapter 4 rotates about the rotating shaft, thereby moving the sector ring 601 connected to its end away from the bottleneck structure 203 of the cylinder 2, thereby enabling the retaining ring 6 to be removed from the bottleneck structure 203.

[0073] like Figure 3 and Figure 4 As shown, in a feasible embodiment, the first stop portion 301 can be an external thread formed on the outer wall of the connector 3, and the second stop portion 1002 can be an internal thread formed on the inner wall of the stop ring 7. In this way, the connector 3 can rotate circumferentially, and the screwing movement between the threads can be used to simultaneously achieve axial movement in the connection port 201 while the connector 3 rotates.

[0074] To connect the main unit 1 to the barrel 2, the operator grasps the housing 101 of the main unit 1 and applies a rotational force to the housing 101, causing the connector 3 to rotate in the direction of engagement. During this rotation, the connector 3, through the screwing action of the threads, moves axially downward within the connection opening 201. Once the connector 3 has axially moved into position, i.e., reached the working position, rotation ceases. At this point, the threads of the connector 3 and the retaining mechanism 10 engage, axially limiting or securing the connector 3, maintaining it in the working position.

[0075] When the barrel 2 needs to be replaced, the housing 101 is rotated in the reverse direction, causing the connector 3 to rotate in the detachment direction. Accordingly, during this rotation, the connector 3 moves axially upward within the connection port 201. Once the connector 3 is completely disengaged from the connection port 201, the retaining mechanism 10 is removed from the barrel 2. Subsequently, the retaining mechanism 10 is attached to the barrel 2 to be replaced. The aforementioned attaching steps are repeated to complete the assembly of the main unit 1 and the next barrel 2.

[0076] Since fine threads have good self-locking properties and are more resistant to vibration and loosening, in the embodiment where the stop portion is a thread, the internal and external threads are preferably fine threads to reduce the risk of the connector 3 becoming loose and coming out of the connection port 201 when in the working position.

[0077] The above is an embodiment in which the retaining portion is a threaded portion. In this embodiment, the axial movement of the connector 3 can be achieved by rotating the connector 3 and screwing the threads together. Of course, the retaining portion is not limited to the embodiment in which the threads are used. In another feasible embodiment, the first retaining portion 301 can be a first retaining tooth formed on the outer wall of the connector 3 and extending obliquely downward, and the second retaining portion 1002 can be a second retaining tooth formed on the inner wall of the retaining ring 7 and extending obliquely downward.

[0078] The first stop tooth can move downward relative to the second stop tooth, and the first stop tooth and the second stop tooth engage or bite each other to limit the upward movement of the first stop tooth relative to the second stop tooth. In this way, the connecting member 3 can move downward relative to the stop mechanism 10, achieving axial downward movement in the connecting port 201.

[0079] The backstop portion adopts a backstop tooth structure, so that the connecting member 3 can only move in one direction relative to the backstop mechanism 10, that is, the connecting member 3 can only move downward, but not upward. In order to make the two backstop teeth detachable, the backstop ring 7 that defines the second backstop tooth can adopt a detachable splicing structure. Specifically, the backstop ring 7 may include multiple splicing ring bodies, each of which has a backstop tooth on its inner wall, and the multiple splicing ring bodies can be spliced together to form the backstop ring 7. The multiple splicing ring bodies can be maintained in a spliced state by a circumferential fixing component such as a clamp.

[0080] To connect the main unit 1 to the barrel 2, the operator grasps the housing 101 of the main unit 1 and applies downward pressure. The connector 3 moves downward through the retaining ring 7. The operator stops pressing until the connector 3 reaches its axial position, i.e., its working position. At this point, the first and second retaining teeth engage or snap together, axially limiting or securing the connector 3 and maintaining it in its working position.

[0081] When the cylinder 2 needs to be replaced, the circumferential fixing components of the retaining ring 7 are released and the retaining ring 7 is disassembled. At this point, the first retaining tooth loses the bite effect of the second retaining tooth, which means that the connector 3 loses the axial limiting or fixing effect of the retaining mechanism 10. The connector 3 can then be pulled axially upward from the connecting port 201. Subsequently, the retaining mechanism 10 can be removed from the cylinder 2. The retaining mechanism 10 is then connected to the cylinder 2 that needs to be replaced. The above-mentioned pressing steps are repeated to complete the assembly of the main unit 1 and the next cylinder 2.

[0082] As described above, in this embodiment of the present invention, the adaptability of a single main unit 1 to multiple different cartridges 2 requires that the outer diameter of the connector 3 be no larger than the diameter of the cartridge 2's connection port 201. Therefore, after the connector 3 is positioned within the connection port 201, a gap will exist between the connector 3 and the connection port 201. However, the operating principle of the sprayer requires the cartridge 2 to be relatively airtight. Therefore, to address the sealing issue at the junction between the connector 3 and the connection port 201, a seal 8 is provided on the exterior of the connector 3. This seal 8 seals the gap between the connector 3 and the connection port 201 when the connector 3 is in the operating position.

[0083] like Figure 8 As shown, seal 8 is annular and made of a flexible, elastic sealing material (e.g., rubber). To position seal 8 and ensure uniform compression and deformation along the circumference, a pressure block 9 is employed. Specifically, pressure block 9 is annular or ring-shaped and can be positioned over connector 3. When connector 3 is in the operating position, pressure block 9 compresses seal 8 between pressure block 9 and connector port 201.

[0084] Furthermore, the pressing block 9 is roughly in the shape of an inverted "convex" character, which may include a necked portion 901 and a circumferentially extended flange 902 located above the necked portion 901. The sealing member 8 may be sleeved outside the necked portion 901 and abut against the lower end of the circumferentially extended flange 902. The surface where the circumferentially extended flange 902 contacts the sealing member 8 forms a stop surface or a limiting surface, so that the sealing member 8 and the circumferentially extended flange 902 are in surface contact. When the connector 3 moves downward in the connecting port 201 until the circumferentially extended flange 902 contacts the connecting port 201, the pressing block 9 is compressed downward, and then the stop surface or the limiting surface compresses the sealing member 8, thereby achieving uniform compression and deformation of the sealing member 8.

[0085] Similarly, the pressure block 9 can also be made of a flexible and elastic sealing material. The radial dimension of the circumferentially extended flange 902 is larger than the diameter of the connection port 201, while the radial dimension of the necked portion 901 is no larger than the diameter of the connection port 201, and preferably slightly larger than the diameter of the connection port 201. In this way, when the connector 3 is in the working position in the connection port 201, the necked portion 901 is embedded in the connection port 201 to form an interference fit, the circumferentially extended flange 902 blocks the outer end surface of the connection port 201, and the sealing member 8 is pressed between the circumferentially extended flange 902 and the inner wall of the connection port 201, thereby forming a stable seal for the connection port 201.

[0086] In an embodiment where the retaining portion is threaded, the connector 3 achieves axial downward movement within the connection port 201 through rotation. In one embodiment, when the connector 3 rotates circumferentially within the connection port 201, the pressure block 9 and the seal 8 remain stationary relative to the connection port 201. That is, the pressure block 9 and the seal 8 do not rotate with the connector 3. This prevents friction between the seal 8 and the connection port 201 as it rotates with the connector 3, thereby preventing wear of the seal 8, which could lead to poor sealing performance and reduced service life.

[0087] The method for preventing the pressure block 9 and the sealing member 8 from rotating with the connector 3 is that the necked portion 901 of the pressure block 9 can be embedded in the connecting port 201, and the two are interference fit. The pressure block 9 is provided with a through hole 903, through which the connector 3 is inserted. In addition, the friction between the connecting port 201 and the necked portion 901 is greater than the friction between the connector 3 and the through hole 903. In this way, the circumferential friction force applied by the connector 3 to the pressure block 9 during the rotation process is overcome by the friction force applied by the connecting port 201 to the necked portion 901. As a result, the pressure block 9 remains stationary and does not rotate with the connector 3.

[0088] Furthermore, in order to achieve the limitation of the pressing block 9, as shown in FIG. Figure 3 As shown, the outer wall of the connector 3 may be provided with a push step 304 located above the pressure block 9, and the push step 304 abuts against the upper end surface of the circumferentially extended flange 902. In one embodiment, the push step 304 may be a part of the structure of the connector 3 itself, and may be a shoulder formed on the outer wall of the connector 3. Specifically, the connector 3 may be arranged in sections, including an upper section with a larger outer diameter and a lower section with a smaller outer diameter. The pressure block 9 may be sleeved on the lower section, and the portion of the upper section that exceeds the lower section forms the push step 304. Alternatively, in another embodiment, the push step 304 may be an additional separate component, specifically a sleeve structure fixedly sleeved on the outside of the connector 3.

[0089] In actual implementation, by rotating or pressing the housing 101, the connector 3 is driven to move downward in the connection port 201, and the pushing step 304 moves downward therewith. When the lower end of the pushing step 304 abuts the upper end surface of the circumferentially extended flange 902, the connector 3 continues to move downward, and the pushing step 304 gradually increases the fixing force exerted on the circumferentially extended flange 902 until the connector 3 moves to the working position. The necked portion 901 is pushed downward and pressed into the connection port 201, and the sealing member 8 is tightly pressed between the circumferentially extended flange 902 and the connection port 201, thereby sealing the gap between the connector 3 and the connection port 201.

[0090] It should be noted that, in the description of the present invention, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0091] The above descriptions are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A sprayer, characterized in that: include: The cylinder is provided with a connection port, wherein the connection port has an axial direction; The main unit includes a gas generating mechanism; the gas generating mechanism has a connecting piece connected to the gas outlet end thereof, which can be inserted into the connecting port and moved along the axial direction within the connecting port; the connecting piece includes a gas guide channel connecting the gas outlet end of the gas generating mechanism and the cylinder, and a first stopper provided on the outer wall thereof; A stopper mechanism, one end of which is detachably connected to the cylinder, and the other end of which is provided with a second stopper that cooperates with the first stopper; when the stopper mechanism is connected to the cylinder, the stopper mechanism and the cylinder are fixed at least along the axial direction; when the connecting member is in the working position in the connecting port, the first stopper cooperates with the second stopper to prevent the connecting member from moving in the connecting port in a direction away from the cylinder; The anti-retraction mechanism includes an adapter detachably connected to the cylinder and an anti-retraction member connected to the adapter; the second anti-retraction portion is provided on the anti-retraction member; There are multiple adapters, and the multiple adapters move horizontally along the stop member so that the multiple adapters are enclosed outside the connecting port of the cylinder to adapt to the connecting ports with different outer diameters; A sealing member is provided on the outside of the connecting member, and the sealing member seals the gap between the connecting member and the connecting port when the connecting member is in the working position.

2. The sprayer according to claim 1, wherein The retaining member is connected to a retaining ring, and the second retaining portion is provided on the inner wall of the retaining ring; The first retaining portion is an external thread formed on the outer wall of the connecting member, and the second retaining portion is an internal thread formed on the inner wall of the retaining ring; or The first stopping portion is a first stopping tooth formed on the outer wall of the connecting member and extending obliquely downward, and the second stopping portion is a second stopping tooth formed on the inner wall of the stopping ring and extending obliquely downward.

3. The sprayer according to claim 2, wherein The cylinder comprises a cylinder body, a bottleneck structure provided on the cylinder body and necked inwardly in the radial direction, and a pot mouth structure provided on the bottleneck structure and expanding outwardly in the radial direction; the connecting port is formed in the bottleneck structure; The end of the adapter facing away from the retaining member is connected with a snap ring, and the snap ring is detachably sleeved outside the bottleneck structure and abuts against the lower end of the pot mouth structure.

4. The sprayer according to claim 3, wherein The clamping ring includes a plurality of sector rings, and the plurality of sector rings can be enclosed and spliced to form the clamping ring.

5. The sprayer according to claim 4, wherein The adapter includes a radial adapter portion correspondingly connected to the multiple sector rings and an axial adapter portion correspondingly connected to the multiple radial adapter portions; the multiple sector rings are respectively arranged at the ends of the multiple radial adapter portions facing away from the axial adapter portions, and the axial adapter portion and the retaining member can be fixedly connected at least along the axial direction.

6. The sprayer according to claim 1, wherein A pressing block is provided on the connecting member; when the connecting member is in the working position, the pressing block presses the sealing member tightly between the pressing block and the connecting port.

7. The sprayer according to claim 6, wherein The pressing block has a necked portion and a circumferentially extending flange located above the necked portion. The sealing member is sleeved outside the necked portion and abuts against the lower end of the circumferentially extending flange.

8. The sprayer according to claim 7, wherein The radial dimension of the necked portion is no greater than the diameter of the connecting port, and the radial dimension of the circumferentially extended flange is greater than the diameter of the connecting port; When the connector is in the working position, the necked portion is embedded in the connection port, the circumferentially extended flange blocks the outer end surface of the connection port, and the sealing member is pressed tightly between the circumferentially extended flange and the inner wall of the connection port.

9. The sprayer according to claim 7, wherein The pressing block is sleeved outside the connecting member; when the connecting member rotates circumferentially in the connecting port, the pressing block and the sealing member are stationary relative to the connecting port, and the pressing block and the sealing member do not rotate together with the connecting member.

10. The sprayer according to claim 9, wherein The outer wall of the connecting piece is provided with a pushing step located above the pressing block, and the pushing step abuts against the upper end surface of the circumferentially extended flange.

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