Convenient spray head structure

Abstract

The utility model provides a portable spray head structure, and belongs to the technical field of green plant maintenance tools. The problem of how to improve the use convenience is solved. The portable spray head structure comprises a cover body and a gland, the bottom of the cover body is provided with at least two inflation pipes with the lower ends penetrating through in the vertical direction, the gland is fixedly provided with piston rods in the vertical direction, the piston rods are arranged in the inflation pipes in a penetrating mode, and the number of the inflation pipes and the number of the piston rods are both at least two. The at least two inflation pipes are fixed to the bottom of the cover body, the at least two piston rods are fixed to the gland, the number of the piston rods corresponds to the number of the inflation pipes, and each piston rod is arranged in the corresponding inflation pipe in a penetrating mode. And the gland can drive the piston rods to synchronously move in the inflation pipes. The convenient spray head structure can ensure that preparation before spraying is more convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of green plant maintenance tools, and relates to a convenient spray head structure. Background Technology

[0002] A sprayer is a tool or instrument in existing technology that performs precise application of pesticides, irrigation, and plant maintenance. It generally consists of two parts: the body of the sprayer and the nozzle mounted on the body.

[0003] For example, a spray bottle for applying adhesive to polystyrene foam boards, disclosed in Chinese Patent (Authorization Announcement No.: CN204197576U), includes a spray bottle and a spray bottle cap. The spray bottle is provided with a dispensing tube, and a movable plug is provided between the spray bottle cap and the spray bottle. The spray bottle cap and the spray bottle are movably connected to seal the inside of the bottle. The spray bottle is provided with a pressure tube and a dispensing tube. The pressure tube is provided with a piston and a piston rod. The dispensing tube is fixedly connected to a nozzle. A handle is provided on one side of the spray bottle cap, and a pressure handle is provided on the top of the spray bottle cap. The pressure handle is connected to the piston through the piston rod. When in use, only the pressure handle needs to be pressed. A nozzle cap is provided on the outside of the nozzle. When in use, the nozzle cap can be removed.

[0004] From paragraph 0017 of its instruction manual in conjunction with its appendix Figure 1 It is known that the handle and piston are connected by a piston rod. Before use, the user repeatedly presses and pulls the handle, causing the piston rod to drive the piston to repeatedly move in the liquid tube, which increases the pressure inside the spray bottle. When the user opens the spray bottle cap and presses down the handle, the solution inside the spray bottle can be sprayed out through the liquid outlet tube and nozzle in sequence under the action of pressure.

[0005] However, in actual use, it is known that before spraying, the operator needs to press and pull the handle repeatedly for a long time to pump air into the spray bottle. The preparation takes a lot of time and is inconvenient to use. Summary of the Invention

[0006] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a convenient nozzle structure. The technical problem to be solved by this utility model is: how to improve ease of use.

[0007] The objective of this utility model can be achieved through the following technical solution: a convenient nozzle structure, including a cover and a pressure cap, wherein the bottom of the cover has an inflation tube extending vertically through it, and a piston rod is fixed vertically on the pressure cap, the piston rod passing through the inflation tube, and there are at least two inflation tubes and at least two piston rods, the at least two inflation tubes being fixed to the bottom of the cover, and the at least two piston rods being fixed to the pressure cap, the number of piston rods corresponding to the number of inflation tubes, and each piston rod passing through the corresponding inflation tube, and the pressure cap being able to drive each piston rod to move synchronously in each inflation tube.

[0008] The portable nozzle structure disclosed in this application includes a cap and a pressure cap. The cap, as the main structure of the nozzle, is fixed to the mouth of the container by a threaded connection. A nozzle and a handle are formed on the outer wall of the cap. A water pipe is installed inside the cap, connecting to the nozzle. A one-way valve is installed between the water pipe and the nozzle inside the cap. A pressure plate for controlling the opening and closing of the one-way valve is hinged to the handle. Furthermore, this application provides at least two inflation tubes at the bottom of the cap, with piston rods correspondingly fixed to the pressure cap and inserted into each inflation tube. During spray preparation, the operator repeatedly pulls and presses the pressure cap, causing the pressure cap to drive the piston rods to move within the inflation tubes, continuously inflating the container through the lower end of the inflation tubes. By using multiple piston rods and multiple inflation tubes, compared to existing technologies, a single press can achieve multiple inflations, minimizing the number of times the operator needs to inflate the container and making it more convenient to use.

[0009] In the aforementioned portable nozzle structure, the cap has at least two vertically aligned locking channels. Each piston rod has a locking head at its upper end that can deform radially inward. Each piston rod is locked into its corresponding locking channel via these locking heads. This design ensures a secure connection between the upper ends of each piston rod and the cap, preventing instability. Specifically, the locking heads can deform radially because their tops have deformation grooves along the circumference of the piston rods, extending through both outer walls of the locking heads. When passing through the locking channels, the force exerted by the inner wall of the locking channels on the outer wall of the locking heads forces the structures on either side of the deformation grooves to deform inward. This allows the locking heads to pass through the locking channels as they contract inward, ensuring that each piston rod is securely locked within its respective locking channel.

[0010] In the aforementioned convenient nozzle structure, the lower end of each snap-fit ​​channel is flared, and each snap-fit ​​channel has a stepped surface circumferentially near its lower end. The snap-fit ​​head passes through the snap-fit ​​channel and abuts against the top surface of the cap, while the top of the piston rod abuts against the stepped surface. The flared structure guides the snap-fit ​​head during insertion, and the stepped surface ensures that the contact between the top of the piston rod and the inner wall of the snap-fit ​​channel is achieved through surface contact instead of point or line contact. Furthermore, the snap-fit ​​head passing through the snap-fit ​​channel and abutting against the top surface of the cap provides vertical positioning of the piston rod, ensuring assembly stability.

[0011] In the aforementioned portable nozzle structure, the top of the cover has at least two guide holes, each guide hole corresponding to a snap-fit ​​channel, and each piston rod is slidably connected to a corresponding guide hole. The sliding fit between the inner wall of the guide hole and the outer wall of the piston rod effectively limits the sliding direction of the piston rod.

[0012] In the aforementioned portable nozzle structure, each piston rod has several outwardly protruding limiting portions on its lower outer side wall along the radial direction. These limiting portions are spaced apart circumferentially along the piston rod, ensuring that the radial dimension of the lower end of the piston rod is larger than the inner diameter of each guide hole. This design prevents the piston rod from dislodging from the inflation tube due to excessive pulling force during inflation.

[0013] In the aforementioned portable nozzle structure, each of the guide holes is a stepped hole, and the bottom of the cap has at least two downward-protruding protrusions. Each protrusion has a vertically opening snap-fit ​​channel. When the cap is pressed downwards, causing the lower ends of each piston rod to approach the lower end of the inflation tube, each protrusion can be inserted into the upper end of each guide hole. The receiving groove ensures effective accommodating of the protrusions, thereby avoiding interference between the cap and the cover. Simultaneously, the cooperation between the receiving groove and the protrusions indirectly guides the piston rods.

[0014] In the aforementioned portable nozzle structure, a pressure relief valve is provided in the cover body, a lower clearance hole is provided at the top of the cover body, and an upper clearance hole is provided at the top of the pressure cap. The operating end of the pressure relief valve passes through the lower clearance hole and the upper clearance hole in sequence. By utilizing the upper and lower clearance holes, interference between the operating end of the pressure relief valve and the pressure cap is avoided.

[0015] Compared with existing technologies, this portable nozzle structure has the following advantages: with the cooperation of at least two piston rods and at least two inflation tubes, the operator can fill the spray bottle body more quickly with fewer pressing and pulling actions on the cap, making the operation more convenient. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the portable nozzle.

[0017] Figure 2 This is a cross-sectional view of the structure of this portable nozzle.

[0018] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0019] Figure 4 This is a schematic diagram of the cover structure.

[0020] Figure 5 This is a schematic diagram of the gland structure.

[0021] Figure 6 This is a schematic diagram of the structure of any one of the piston rods.

[0022] In the figure, 1 is the cover; 11 is the inflation tube; 12 is the guide hole; 13 is the lower clearance hole; 14 is the pressure relief valve; 2 is the pressure cap; 21 is the piston rod; 211 is the piston pad; 212 is the clamp; 213 is the limiting part; 22 is the protrusion; 221 is the snap-fit ​​channel; 2211 is the stepped surface; and 23 is the upper clearance hole. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] like Figure 1 and Figure 2 As shown, this portable spray head structure includes a cover 1 and a pressure cap 2. The cover 1 serves as the main structure of the spray head and is fixed to the mouth of the spray bottle via a threaded connection. In addition, a nozzle and a handle are formed on the outer wall of the cover 1. A water pipe is installed in the cover 1 and connected to the nozzle through the water pipe. A one-way valve is installed in the cover 1 between the water pipe and the nozzle, and a pressure plate for controlling the opening and closing of the one-way valve is hinged to the handle. Two air tubes 11 are vertically injection molded at the bottom of the cover 1 and are arranged opposite to the axis of the cover 1. The bottom surface of the pressure cap 2 has two downward protruding parts 22, and the positions of the two protruding parts 22 are opposite to the positions of the two air tubes 11. Each protruding part 22 has a vertically formed snap-fit ​​channel 221. The lower end of the snap-fit ​​channel 221 penetrates the bottom surface of the protruding part 22 and the upper end penetrates to the top surface of the pressure cap 2.

[0025] Combination Figure 6The pressure cap 2 is provided with two piston rods 21. The lower end of each piston rod 21 is fixed with a piston pad 211 made of rubber material. The lower ends of the two piston rods 21 are inserted into the two inflation tubes 11 one by one, so that the outer peripheral wall of the piston pad 211 and the inner peripheral wall of the inflation tube 11 are pressed together. The upper end of each piston rod 21 is injection molded with a clamp head 212. The clamp head 212 is existing technology. The top of the clamp head 212 has a deformation slit that runs through its side wall along the axial direction. The lower end of the clamping channel 221 is flared, and the clamping channel 221 has a stepped surface 2211 along the axial direction near the lower end port. The clamp head 212 is passed through the clamping channel 221 by interference fit, so that the clamp head 212 and the top surface of the pressure cap 2 abut against each other, and the top of the piston rod 21 abuts against the stepped surface 2211. Through the upper and lower cooperation and limiting method, the connection between each piston rod 21 and the pressure cap 2 is ensured.

[0026] Combination Figure 3-5 The top of the cover 1 has two guide holes 12 corresponding to the two piston rods 21. The two piston rods 21 are slidably connected in the two guide holes 12. It should be emphasized that the outer peripheral wall of the piston rod 21 and the inner peripheral wall of the guide hole 12 are fitted together. Each guide hole is a stepped hole. When the pressure cap 2 moves downward and abuts against the cover 1, the protrusion 22 can be inserted into the guide hole 12 and the outer peripheral wall of the protrusion 22 is fitted together with the upper inner peripheral wall of the guide hole 12.

[0027] Each piston rod 21 has several radially protruding limiting parts 213 on the lower outer wall. The limiting parts 213 are arranged at intervals along the circumference of the piston rod 21, so that the radial dimension of the lower end of the piston rod 21 is larger than the inner diameter of the guide hole 12. In this way, when the piston rod 21 moves upward, it is axially limited by the limiting parts 213 and the lower side of the cover 1.

[0028] In addition, a pressure relief valve 14 is installed inside the cover 1. A lower clearance hole 13 is provided on the top of the cover 1, and an upper clearance hole 23 is provided on the pressure cap 2. The operating end of the pressure relief valve 14 is set through the lower clearance hole 13, and when the pressure cap 2 moves downward and abuts against the top of the cover 1, the operating end of the pressure relief valve 14 can also pass through the upper clearance hole 23.

[0029] Before spraying, the operator can repeatedly pull and press the cap 2, causing the cap 2 to drive each piston rod 21 to repeatedly move in the inflation tube 11. Since there are two piston rods 21 and two inflation tubes 11 working together, compared with the existing technology, the operator can achieve the purpose of inflating the spray bottle several times with one pull and press action, effectively reducing the time spent on inflation preparation and making the operation more convenient.

[0030] Furthermore, it should be noted that the scheme disclosed in this embodiment is a scheme of dual inflation tubes 11 and dual piston rods 21. When there is enough space and it is in line with actual operation (i.e., in line with the operator's strength), as many piston rods 21 and inflation tubes 11 as possible can be arranged to reduce the time required for inflation preparation.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0032] Although this document frequently uses terms such as cover 1, inflation tube 11, guide hole 12, lower clearance hole 13, pressure relief valve 14, pressure cap 2, piston rod 21, piston pad 211, locking head 212, limiting part 213, protrusion 22, locking channel 221, stepped surface 2211, and upper clearance hole 23, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A portable nozzle structure, comprising a cover (1) and a pressure cap (2), wherein the bottom of the cover (1) has an inflation tube (11) extending vertically through it at its lower end, and a piston rod (21) is fixed vertically on the pressure cap (2), the piston rod (21) passing through the inflation tube (11), characterized in that, The inflation tube (11) and the piston rod (21) each have at least two, and at least two inflation tubes (11) are fixed to the bottom of the cover (1), and at least two piston rods (21) are fixed to the pressure cap (2). The number of piston rods (21) corresponds to the number of inflation tubes (11), and each piston rod (21) passes through the corresponding inflation tube (11). The pressure cap (2) can drive each piston rod (21) to move synchronously in each inflation tube (11).

2. The portable nozzle structure according to claim 1, characterized in that, The pressure cap (2) has at least two locking channels (221) vertically opened on its upper edge. The upper end of each piston rod (21) has a locking head (212) that can deform radially inward. Each piston rod (21) is locked into each locking channel (221) in a corresponding manner through the locking head (212).

3. The portable nozzle structure according to claim 2, characterized in that, The lower end of each of the snap-fit ​​channels (221) is flared, and each of the snap-fit ​​channels (221) has a stepped surface (2211) along the circumferential direction near the lower end port. The snap head (212) passes through the snap-fit ​​channel (221) and abuts against the top surface of the pressure cap (2). The top of the piston rod (21) abuts against the stepped surface (2211).

4. The portable nozzle structure according to claim 2 or 3, characterized in that, The top of the cover (1) is provided with at least two guide holes (12), and the position of each guide hole (12) corresponds to each of the snap-fit ​​channels (221). Each piston rod (21) is slidably connected in each of the guide holes (12).

5. The portable nozzle structure according to claim 4, characterized in that, Each piston rod (21) has a plurality of outwardly protruding limiting portions (213) on the outer side wall of its lower end along the radial direction. The plurality of limiting portions (213) are arranged circumferentially on the piston rod (21) such that the radial dimension of the lower end of the piston rod (21) is greater than the inner diameter of each guide hole (12).

6. The portable nozzle structure according to claim 5, characterized in that, Each of the guide holes (12) is a stepped hole. The bottom of the pressure cap (2) has at least two downward protrusions (22). Each of the protrusions (22) has a vertically arranged snap-fit ​​channel (221). When the pressure cap (2) is pressed down so that the lower end of each piston rod (21) approaches the lower end of the inflation tube (11), each of the protrusions (22) can be inserted into the upper end of each of the guide holes (12) in a corresponding manner.

7. The portable nozzle structure according to claim 6, characterized in that, The cover (1) is provided with a pressure relief valve (14), the top of the cover (1) is provided with a lower clearance hole (13), the top of the pressure cap (2) is provided with an upper clearance hole (23), and the operating end of the pressure relief valve (14) passes through the lower clearance hole (13) and the upper clearance hole (23) in sequence.

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