Liquid outlet mechanism of hand press type sprayer

Abstract

The utility model relates to a liquid outlet mechanism of a hand press type sprayer, which comprises a seat body, the top of the seat body is provided with a # imgabs 0 # type liquid outlet channel and a compression cavity, and the compression cavity is arranged on the inner side of the # imgabs 1 # type liquid outlet channel and communicated with the # imgabs 2 # type liquid outlet channel. The cover shell is detachably fixed to the outer portion of the # imgabs3 type liquid outlet channel, the liquid inlet pipe is connected to an opening in the root of the # imgabs4 type liquid outlet channel in a sealed mode and located below the base body, the piston is movably connected to the interior of an opening in the end of the compression cavity in a sealed mode, and the elastic pressing assembly is arranged between the base body and the piston. The elastic pressing assembly comprises a handle and a connecting rod unit; the handle is rotatably connected below the end part of the # imgabs5 type liquid outlet channel; the connecting rod unit is movably connected between the root part of the handle and the top of the seat body so as to enable the handle to have an elastic resetting function; the end part of the piston is universally connected to the rear side of the middle part of the handle; according to the utility model, the handle can be effectively prevented from being pressed due to misoperation under the condition that spraying is not needed, so that inconvenience in daily use is eliminated; in addition, the liquid inlet speed is increased, so that the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sprayers, in particular to a liquid discharge mechanism of a hand-pressure sprayer. Background Art

[0002] A sprayer is an apparatus that uses air suction to turn medicine or other liquids into mist and sprays them evenly onto other objects. It is composed of an air compression device, a thin tube, a nozzle, etc. A hand-pressure sprayer is a sprayer that uses the user's fingers to drive the air compression device. The air compression device of the hand-pressure sprayer currently on the market mainly consists of a handle, a piston for liquid inlet and outlet, a connecting rod for connecting the handle and the piston, and a cavity for storing liquid. When in use, the handle is pressed multiple times to drive the piston to reciprocate in the cavity with the help of the connecting rod, and then the liquid is sucked in and sprayed out by changing the air pressure in the cavity. However, the handle in the existing air compression device lacks a locking function. When spraying is not required, it is easy to press the handle due to misoperation, and then the liquid is sprayed out through the piston, which brings certain inconveniences to daily use. In addition, the structural design of the piston in the existing air compression device is not reasonable enough, and the negative pressure value in the compression area formed between it and the cavity is low, resulting in a slow liquid inlet speed and poor use effect, which needs further improvement. Utility Model Content

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a liquid discharge mechanism of a hand-pressure sprayer which can effectively prevent the handle from being pressed due to misoperation, thereby eliminating the inconvenience in daily use, and also speeding up the liquid inlet speed to improve the use effect.

[0004] The utility model solves the above technical problems by adopting the following technical solution: a liquid outlet mechanism of a hand pressure sprayer comprises a seat body, the top of which has Type of liquid outlet and provided at The inner side of the outlet channel is connected with The compression chamber has a plurality of liquid outlets connected to each other; and further comprises a detachable fixed The cover shell outside the outlet is sealed and connected to the The invention relates to a liquid inlet pipe located at the root opening of the liquid outlet channel and below the seat body, a piston sealed and movably connected to the inside of the opening at the end of the compression chamber, and an elastic pressing component arranged between the seat body and the piston; the elastic pressing component includes a rotatable connection at the A handle below the end of the outlet channel and a connecting rod unit flexibly connected between the handle root and the top of the seat body so that the handle has an elastic reset function, and the end of the piston is universally connected to the middle rear side of the handle, characterized in that:

[0005] It also includes a lock buckle which is detachably fixed on the seat body, and the front end of the lock buckle cooperates with the rear side of the handle.

[0006] An arc-shaped clamp is formed upward at the rear end of the lock buckle, and the arc-shaped clamp is detachably clamped and fixed on the outer wall of the end of the compression chamber.

[0007] An arc-shaped limit plate is formed forwardly at the lower edge of the front opening of the arc-shaped clamp and is located below the piston and in front of the end opening of the compression chamber. The inner wall of the arc-shaped limit plate cooperates with the lower outer wall of the piston, and the inner diameter of the arc-shaped limit plate is smaller than the end outer diameter of the compression chamber.

[0008] A retaining ring is formed outwardly on the outer peripheral surface of the end of the piston and is arranged in an annular direction and cooperates with the end of the arc-shaped limiting piece. The outer diameter of the retaining ring is greater than the inner diameter of the arc-shaped limiting piece.

[0009] Preferably, an extension plate is formed downward at the bottom of the lock buckle.

[0010] Preferably, a compression sleeve is concentrically arranged backwards at the root of the piston, and a first conical sealing sleeve and a second conical sealing sleeve are respectively formed backwards on the outer wall of the root of the compression sleeve and on the edge of the end opening of the compression sleeve.

[0011] Preferably, a convex cavity is formed concentrically on the inner wall of the second conical sealing sleeve, and an annular compression zone is formed between the outer wall of the convex cavity and the inner wall of the second conical sealing sleeve.

[0012] Preferably, a groove is provided between the top of the lock buckle and the inner wall of the arc-shaped limiting plate, and a supporting inclined surface which is symmetrical with each other and cooperates with the lower outer wall of the retaining ring is formed between the left and right edges of the opening of the groove and the front outer wall of the arc-shaped limiting plate.

[0013] Preferably, a limiting inclined surface cooperating with the rear side of the handle is formed at the upper corner of the front end of the lock buckle.

[0014] Compared with the prior art, the utility model has the following advantages: a detachable lock is provided between the handle and the compression chamber, thereby effectively preventing the handle from being pressed due to misoperation when spraying is not required, thereby preventing the piston from accidentally spraying liquid, thereby eliminating the inconvenience in daily use; in addition, the structure of the piston is optimized to increase the negative pressure value of the chamber formed between it and the compression chamber, thereby accelerating the liquid inlet speed to improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the exploded structural diagram of the right rear side of the utility model;

[0016] Figure 2It is a right front structural diagram of the lock buckle of the utility model;

[0017] Figure 3 This is a structural diagram of the right rear side of the piston of the utility model. DETAILED DESCRIPTION

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships, such as A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0019] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0020] like Figures 1 to 3 As shown, a liquid outlet mechanism of a hand pressure sprayer comprises a seat body 1, the top of which has Type liquid outlet 11 and provided at The inner side of the liquid outlet 11 is connected with The compression chamber 12 is interconnected with the liquid outlet 11; and further comprises a detachable fixed The housing 2 outside the liquid outlet 11 is sealed and connected to A liquid inlet pipe 3 is located at the root opening of the liquid outlet channel 11 and below the seat body 1, a piston 5 is sealed and movably connected to the inside of the end opening of the compression chamber 12, and an elastic pressing component 4 is arranged between the seat body 1 and the piston 5.

[0021] The elastic pressing assembly 4 includes a rotatable connection A handle 41 is provided below the end of the outlet passage 11 and a connecting rod unit 42 is flexibly connected between the root of the handle 41 and the top of the seat body 1 so that the handle 41 has an elastic reset function. The end of the piston 5 is universally connected to the rear side of the middle part of the handle 41.

[0022] Before use, the seat body 1 is fixed to the opening of a liquid storage bottle (not shown) containing liquid by means of a detachable seal of the internal thread sleeve 6, and the liquid inlet tube 3 is immersed in the liquid. After holding the internal thread sleeve 6 and pressing the handle 41 with fingers, the root of the piston 5 will penetrate into the compression chamber 12 to compress the air and liquid in the compression chamber 12, thereby allowing the air and liquid to pass through the compression chamber 12. When the finger releases the handle 41, the connecting rod unit 42 will force the handle 41 to automatically reset to drive the piston 5 back, thereby generating negative pressure inside the compression chamber 12, so that the liquid in the liquid storage bottle (not shown) is discharged through the liquid inlet pipe 3 and The liquid outlet 11 enters the interior of the compression chamber 12, and the above principle is the prior art.

[0023] The utility model is characterized in that it also includes a lock buckle 7 detachably fixed on the seat body 1, the front end of the lock buckle 7 cooperates with the rear side of the handle 41, and the rear end of the lock buckle 7 is upwardly formed with an arc-shaped clamp 71, which is detachably fixed to the end outer wall of the compression chamber 12 by holding it tightly.

[0024] An arc-shaped limit plate 72 is formed forwardly at the lower edge of the front opening of the arc-shaped clamp 71 and is located below the piston 5 and in front of the opening at the end of the compression chamber 12. The inner wall of the arc-shaped limit plate 72 cooperates with the lower outer wall of the piston 5. The inner diameter of the arc-shaped limit plate 72 is smaller than the outer diameter of the end of the compression chamber 12 to prevent the arc-shaped limit plate 72 from continuing to move backward along the outer wall of the compression chamber 12 after contacting the end of the compression chamber 12.

[0025] A retaining ring 51 is also formed on the outer peripheral surface of the end of the piston 5, which is arranged in an annular direction and cooperates with the end of the arc-shaped limit plate 72. The outer diameter of the retaining ring 51 is larger than the inner diameter of the arc-shaped limit plate 72 to prevent the retaining ring 51 from continuing to move toward the compression chamber 12 after contacting the end of the arc-shaped limit plate 72.

[0026] An extension plate 73 is formed downward at the bottom of the lock buckle 7 to facilitate grasping with fingers when removing the lock buckle 7.

[0027] A compression sleeve 53 is coaxially arranged at the root of the piston 5, and a first conical sealing sleeve 56 and a second conical sealing sleeve 54 are respectively formed at the outer wall of the root of the compression sleeve 53 and the edge of the end opening of the compression sleeve 53.

[0028] A convex cavity 55 is concentrically formed on the inner wall of the second conical sealing sleeve 54 , and an annular compression zone 57 is formed between the outer wall of the convex cavity 55 and the inner wall of the second conical sealing sleeve 54 .

[0029] A groove 74 is provided between the top of the lock buckle 7 and the inner wall of the arc-shaped limiting plate 72 , and a supporting inclined surface 75 which is symmetrical with each other and cooperates with the lower outer wall of the retaining ring 51 is formed between the left and right edges of the opening of the groove 74 and the front outer wall of the arc-shaped limiting plate 72 .

[0030] A limiting inclined surface 76 that cooperates with the rear side of the handle 41 is also formed at the upper corner of the front end of the lock buckle 7.

[0031] How to use lock 7:

[0032] When the locking clasp 71 is in the state of being lifted up, the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, so that the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp 71 is in the state of being lifted up, and the locking clasp

[0033] When the handle 41 is accidentally pressed, the handle 41 will push the lock buckle 7 backward with the help of the limiting inclined surface 76, thereby forcing the piston 5 to move backward a short distance until the root and end of the arc-shaped limiting piece 72 respectively abut against the end of the compression chamber 12 and the rear outer wall of the retaining ring 51. After that, the piston 5 cannot move backward any further, and thus cannot squeeze the liquid inside the compression chamber 12, thereby playing an effective limiting role.

[0034] To use the sprayer smoothly, one only needs to pinch the extension plate 73 and pull it downward until the opening of the arc-shaped clamp 71 is completely separated from the outer wall of the compression chamber 12. The operation is simple and convenient.

[0035] Improved effects of piston 5:

[0036] In the prior art, a concave cavity with a large volume for accommodating a spring is provided inside the root of the piston 5. The above-mentioned concave cavity and the interior of the compression chamber 12 together form a chamber for storing air and liquid. However, due to the large volume of the above-mentioned chamber, the distribution density of air and liquid is small, and the negative pressure value is low. When the piston 5 retreats and draws liquid into the compression chamber 12, the pressure change in the chamber is small, which leads to a slow liquid entry speed. However, in the utility model, a concentrically arranged convex cavity 55 is provided on the inner wall of the second conical sealing sleeve 54 to greatly reduce the volume of the concave cavity. Instead, an annular compression zone 57 is formed between the outer wall of the convex cavity 55 and the inner wall of the second conical sealing sleeve 54, and the annular compression zone 57 and the interior of the compression chamber 12 together form a new chamber for storing air and liquid, which greatly increases the initial distribution density of air and liquid, and thus increases the negative pressure value. When the piston 5 retreats, the flow rate of the liquid entering the compression chamber 12 will be greatly accelerated.

[0037] The utility model is provided with a detachable lock buckle 7 between the handle 41 and the compression chamber 12, so that when spraying is not required, the handle 41 can be effectively prevented from being pressed due to misoperation, thereby preventing the piston from accidentally spraying liquid, thereby eliminating the inconvenience in daily use; in addition, the structure of the piston 5 is optimized to increase the negative pressure value of the chamber formed between it and the compression chamber 12, thereby accelerating the liquid intake speed to improve the use effect.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A liquid discharge mechanism of a hand pressure sprayer, comprising a seat body, the top of which has Type of liquid outlet and provided at The inner side of the outlet channel is connected with The compression chamber has a plurality of liquid outlets connected to each other; and further comprises a detachable fixed The cover shell outside the outlet is sealed and connected to the The invention relates to a liquid inlet pipe located at the root opening of the liquid outlet channel and below the seat body, a piston sealed and movably connected to the inside of the opening at the end of the compression chamber, and an elastic pressing component arranged between the seat body and the piston; the elastic pressing component includes a rotatable connection at the A handle below the end of the outlet channel and a connecting rod unit flexibly connected between the handle root and the top of the seat body so that the handle has an elastic reset function, and the end of the piston is universally connected to the middle rear side of the handle, characterized in that: It also includes a lock buckle detachably fixed to the seat body, wherein the front end of the lock buckle cooperates with the rear side of the handle; The rear end of the lock buckle is upwardly formed with an arc-shaped clamp, and the arc-shaped clamp is detachably fixed to the outer wall of the end of the compression chamber; The lower edge of the front opening of the arc-shaped clamp is forwardly formed with an arc-shaped limit piece located below the piston and in front of the end opening of the compression chamber, the inner wall of the arc-shaped limit piece cooperates with the lower outer wall of the piston, and the inner diameter of the arc-shaped limit piece is smaller than the end outer diameter of the compression chamber; A retaining ring is formed outwardly on the outer peripheral surface of the end of the piston and is arranged in an annular direction and cooperates with the end of the arc-shaped limiting piece. The outer diameter of the retaining ring is greater than the inner diameter of the arc-shaped limiting piece.

2. The liquid discharge mechanism of a hand pressure sprayer according to claim 1, characterized in that: An extension plate is formed downward at the bottom of the lock buckle.

3. The liquid discharge mechanism of a hand pressure sprayer according to claim 1, characterized in that: A concentrically arranged compression sleeve is formed backward at the root of the piston, and a first conical sealing sleeve and a second conical sealing sleeve are respectively formed backward at the outer wall of the root of the compression sleeve and the edge of the end opening of the compression sleeve.

4. The liquid discharge mechanism of a hand pressure sprayer according to claim 3, characterized in that: A convex cavity is formed concentrically on the inner wall of the second conical sealing sleeve, and an annular compression zone is formed between the outer wall of the convex cavity and the inner wall of the second conical sealing sleeve.

5. The liquid discharge mechanism of a hand pressure sprayer according to claim 1, characterized in that: A groove is provided between the top of the lock buckle and the inner wall of the arc-shaped limiting plate, and a supporting inclined surface symmetrical to each other and cooperating with the lower outer wall of the retaining ring is formed between the left and right edges of the opening of the groove and the front outer wall of the arc-shaped limiting plate.

6. The liquid discharge mechanism of a hand pressure sprayer according to claim 1, characterized in that: A limiting inclined surface that cooperates with the rear side of the handle is also formed at the upper corner of the front end of the lock buckle.

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