Liquid stop valve

Abstract

The utility model discloses a liquid stop valve, and mainly relates to the field of grape wine experiment instruments. Comprising a valve body and a valve element, the top of the valve body is provided with a connector communicated with an inner cavity of the valve body, the bottom of the valve body is provided with a liquid outlet communicated with the inner cavity of the valve body, and the connector is used for being connected with a pipe fitting; the valve element comprises a triggering part, a blocking part and a sliding part which are sequentially arranged from bottom to top, the sliding part is located in the valve body and can move up and down in the valve body, the blocking part can move up and down in the liquid outlet, the bottom end of the triggering part is located on the lower side of the liquid outlet, and a tower-shaped spring is arranged at the top of the valve element. A limiting piece matched with the tower-shaped spring is arranged on the inner wall of the valve body, the top end of the tower-shaped spring abuts against the limiting piece, and the bottom end of the tower-shaped spring abuts against the valve element. The pipette can prevent liquid from splashing during pipetting, is convenient and fast, saves time and labor, and can extract the liquid cleanly and sanitarily.

Description

TECHNICAL FIELD

[0001] The utility model relates to grape wine experimental instrument field, specifically a kind of liquid stop valve. BACKGROUND

[0002] In the process of wine making procedure and laboratory experiment, liquid is often poured, transferred and subpackaged, and the traditional operation mode uses manual pouring, which is inconvenient and easy to splash, and some liquids (medicines) can cause personnel burns. Some existing stop valves (wine stoppers and pipettors) have the problems of loose valve and easy leakage. In addition, the non-sealed liquid pouring tool can also cause oxidation and degeneration of some liquid medicines. UTILITY MODEL CONTENT

[0003] The utility model aims at solving the problems in the prior art, and provides a liquid stop valve, which can prevent liquid from splashing during pipetting, is convenient and fast, saves time and effort, and extracts liquid cleanly and hygienically.

[0004] To achieve the above-mentioned purpose, the utility model realizes the following technical scheme:

[0005] A liquid stop valve comprises a valve body and a valve core. The top of the valve body is provided with an interface communicating with the inner cavity of the valve body, and the bottom of the valve body is provided with a liquid outlet communicating with the inner cavity of the valve body. The interface is used for connecting a pipe fitting. The valve core comprises a trigger part, a plugging part and a sliding part arranged in sequence from bottom to top. The sliding part is located in the valve body and can move up and down in the valve body. The plugging part can move up and down in the liquid outlet. The bottom end of the trigger part is located on the lower side of the liquid outlet. The top of the valve core is provided with a tower-shaped spring. The inner wall of the valve body is provided with a limiting piece corresponding to the tower-shaped spring. The top end of the tower-shaped spring abuts against the limiting piece, and the bottom end abuts against the valve core.

[0006] Preferably, the inner diameter of the liquid outlet is smaller than the inner diameter of the inner cavity of the valve body. The outer diameter of the sliding part is larger than the inner diameter of the liquid outlet. The outer diameter of the plugging part is smaller than the outer diameter of the sliding part. The outer diameter of the plugging part is larger than the outer diameter of the trigger part.

[0007] Preferably, the bottom of the sliding part is provided with a sealing piece.

[0008] Preferably, a plurality of arc-shaped protective plates are arranged on the bottom end of the valve body along the circumference of the valve body.

[0009] Preferably, the limiting piece is a snap spring arranged on the inner wall of the valve body. The inner wall of the valve body is provided with a clamping groove corresponding to the snap spring.

[0010] Preferably, the top of the sliding part is provided with a groove corresponding to the tower-shaped spring. The groove is provided with a positioning column corresponding to the tower-shaped spring.

[0011] Compared with the prior art, the beneficial effects of the utility model lie in that:

[0012] The utility model discloses a tower spring gives the valve core downward thrust, closes the liquid outlet, and the tower spring elasticity is good, and the switch is tight, and the air tightness is good, the interface of the top of the valve body is used to connect with glass tube and the like components, holds the glass tube, makes the trigger portion abut with the inner wall or bottom surface of the container, and pushes down, makes the trigger portion move upward relative to the valve body, and the plugging portion separates with the liquid outlet, and the liquid outlet opens, and the glass tube is lifted, and under the action of the tower spring, the plugging portion resets, and the liquid outlet is closed, can conveniently and quickly pour, shift, and subpack liquid, has convenient and quick, time -saving and labor -saving, clean and sanitary liquid extraction features. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic diagram of the utility model.

[0014] Reference signs in the drawings: 1, valve body, 11, arc-shaped protection plate, 2, valve core, 21, sliding part, 22, plugging part, 23, trigger part, 24, sealing element, 25, recess, 26, positioning column, 3, interface, 4, liquid outlet, 5, tower spring, 6, limiting element, 7, pipe fitting. DETAILED DESCRIPTION

[0015] The utility model will be further described below in combination with specific embodiment. It should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the application.

[0016] Embodiment: as attached Figure 1 The utility model discloses a liquid stop valve, including valve body 1, valve core 2, the top of valve body 1 is equipped with with the inner chamber intercommunication of valve body 1's interface 3, the bottom is equipped with with the inner chamber intercommunication of valve body 1's liquid outlet 4, interface 3 is used for connecting pipe fitting 7, the main body of valve body 1 is the cylinder type structure of top end open bottom end closed, and is equipped with liquid outlet 4 in the middle part of the bottom of this cylinder type structure, and the material quality of valve body 1 can adopt ABS plastic, and pipe fitting 7 can adopt glass tube, and the adaptability of interface 3 and glass tube is strong, and glass tube is high -transparency PMMA glass, and the top end of glass tube can be connected with hose and the like.

[0017] The valve core 2 comprises a trigger part 23, a blocking part 22 and a sliding part 21 arranged in sequence from bottom to top, the sliding part 21, the blocking part 22 and the trigger part 23 are of an integrated structure, and the material thereof can be ABS plastic, the sliding part 21 is located in the valve body 1 and can move up and down in the valve body 1, the outer diameter of the sliding part 21 is smaller than the inner diameter of the inner cavity of the valve body 1, the inner diameter of the liquid outlet 4 is smaller than the inner diameter of the inner cavity of the valve body 1, the outer diameter of the blocking part 22 is slightly smaller than the inner diameter of the liquid outlet 4, the outer diameter of the sliding part 21 is greater than the inner diameter of the liquid outlet 4, the outer diameter of the blocking part 22 is smaller than the outer diameter of the sliding part 21, the outer diameter of the blocking part 22 is greater than the outer diameter of the trigger part 23, and the outer diameters of the sliding part 21, the blocking part 22 and the trigger part 23 decrease in sequence, the blocking part 22 can move up and down in the liquid outlet 4, the bottom end of the trigger part 23 is located on the lower side of the liquid outlet 4, and the liquid outlet 4 is closed by the lower end surface of the sliding part 22.

[0018] Preferably, in order to improve the sealing performance of the liquid outlet, the bottom of the sliding part 21 is provided with a sealing element 24, the sealing element 24 is a sealing ring sleeved on the blocking part 22, and the material of the sealing element 24 is food-grade silica gel.

[0019] Preferably, in order to protect the part of the valve core extending outwards through the liquid outlet, a plurality of arc-shaped protection plates 11 are arranged on the bottom end of the valve body 1 along the circumference of the valve body 1, the bottom end of the arc-shaped protection plate 11 is located above the bottom end of the trigger part 23, and the distance between the bottom end of the arc-shaped protection plate 11 and the bottom end of the trigger part 23 is equal to the maximum upward movement value of the valve core 2.

[0020] The top of the valve core 2 is provided with a tower-shaped spring 5, the material of the tower-shaped spring is 316 food-grade stainless steel, the inner wall of the valve body 1 is provided with a limiting element 6 matched with the tower-shaped spring 5, the limiting element 6 is detachable, facilitating the disassembly and assembly of the tower-shaped spring 5, the top end of the tower-shaped spring 5 abuts against the limiting element 6, and the bottom end abuts against the valve core 2.

[0021] Preferably, in order to facilitate the disassembly and assembly of the limiting element, the limiting element 6 is a snap spring arranged on the inner wall of the valve body 1, and the inner wall of the valve body 1 is provided with a clamping groove matched with the snap spring.

[0022] Preferably, in order to improve the stability of the installation of the tower-shaped spring, the top of the sliding part 21 is provided with a groove 25 matched with the tower-shaped spring 5, the groove 25 is provided with a positioning column 26 matched with the tower-shaped spring 5, and the bottom end of the tower-shaped spring 5 is arranged in the groove 25 and sleeved on the positioning column 26.

Claims

1. A liquid shut-off valve comprising a valve body (1), a valve core (2), characterized in that: The top of the valve body (1) is provided with an interface (3) communicated with the inner cavity of the valve body (1), and the bottom is provided with a liquid outlet (4) communicated with the inner cavity of the valve body (1), the interface (3) is used for connecting a pipe fitting (7); the valve core (2) comprises a trigger part (23), a blocking part (22) and a sliding part (21) arranged in sequence from bottom to top, the sliding part (21) is located in the valve body (1) and can move up and down in the valve body (1), the blocking part (22) can move up and down in the liquid outlet (4), the bottom end of the trigger part (23) is located on the lower side of the liquid outlet (4), and the top of the valve core (2) is provided with a tower-shaped spring (5), the inner wall of the valve body (1) is provided with a limiting piece (6) matched with the tower-shaped spring (5), the top end of the tower-shaped spring (5) abuts against the limiting piece (6), and the bottom end abuts against the valve core (2).

2. A liquid stop valve according to claim 1, characterised in that: The inner diameter of the liquid outlet (4) is smaller than that of the inner cavity of the valve body (1), the outer diameter of the sliding part (21) is greater than that of the liquid outlet (4), the outer diameter of the blocking part (22) is smaller than that of the sliding part (21), and the outer diameter of the blocking part (22) is greater than that of the trigger part (23).

3. A liquid stop valve according to claim 2, wherein: The bottom of the sliding part (21) is provided with a sealing piece (24).

4. A liquid stop valve according to claim 1, wherein: A plurality of arc-shaped protective plates (11) are arranged on the bottom end of the valve body (1) along the circumference of the valve body (1).

5. A liquid stop valve according to claim 1, wherein: The limiting piece (6) is a snap spring arranged on the inner wall of the valve body (1), and the inner wall of the valve body (1) is provided with a snap groove matched with the snap spring.

6. A liquid stop valve according to claim 1, wherein: The top of the sliding part (21) is provided with a groove (25) matched with the tower-shaped spring (5), and the groove (25) is provided with a positioning column (26) matched with the tower-shaped spring (5).

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