CN215763511U - Automatic vent plug for test tube - Google Patents

Abstract

The utility model discloses an automatic vent plug for a test tube, which comprises a conical plastic plug and a plastic plug, wherein the plastic plug is arranged inside the conical plastic plug, the conical plastic plug is placed into a test tube opening, an adjusting rod above the plastic plug is held, the adjusting rod is pressed inwards, a connecting rod on a fixed shaft at the bottom end of the adjusting rod is folded inwards, a rubber sleeve on the surface of the conical plastic plug is bent inwards, the conical plastic plug is more easily placed into the top end of the test tube, the conical plastic plug is fixed at the top end of the test tube, when gas is generated in the test tube, if the pressure in the test tube rises, the force acting on a glass ball exceeds the spring force, the glass ball is jacked up, and the gas is discharged through an exhaust channel on the automatic vent plug and an exhaust hole on the plug. If use this automatic core vent to relieve the anger in the test tube, not only can realize that the mouth of pipe is sealed, can also compare the automatic exhaust of the gas that produces when reacting in the test tube with traditional test tube stopper in the use safer, it is more convenient to fill in simultaneously and pull out.

Description

Automatic vent plug for test tube

Technical Field

The utility model belongs to the technical field related to the field of experimental equipment, and particularly relates to an automatic vent plug for a test tube.

Background

Test tubes, which are common instruments in chemical laboratories, are used as reaction vessels for small amounts of reagents, and are used at normal temperature or under heating (which should be preheated before heating or the test tubes are liable to burst), and are classified into various types such as ordinary test tubes, test tubes with branches, and centrifugal test tubes. The top end of the test tube is provided with a test tube plug.

The prior art has the following problems:

the current test tube adopts rubber buffer or wooden plug to seal the mouth of a pipe usually, if in the test tube when chemical reaction produces more gas, can not in time exhaust and have the potential safety hazard, causes the inside pressure of test tube too big easily, causes the unexpected departure of test tube stopper, perhaps the test tube breaks and causes inside reaction liquid to reveal, causes the emergence of incident.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic venting plug for a test tube, which aims to solve the problems that the existing test tube in the background art is usually sealed by a rubber plug or a wood plug to a tube opening, if more gas is generated in the test tube through chemical reaction, potential safety hazards are caused due to incapability of timely venting, the pressure in the test tube is easily too high, the test tube plug is accidentally popped, or the test tube is broken, so that the leakage of reaction liquid in the test tube is caused, and safety accidents are caused.

In order to achieve the purpose, the utility model provides the following technical scheme: an automatic venting plug for a test tube comprises a conical plastic plug and a plastic plug, wherein the plastic plug is arranged inside the conical plastic plug, an exhaust hole is formed in one side of the plastic plug, a spring is arranged at the bottom end of the plastic plug, a glass ball valve core is arranged at the bottom end of the spring, a valve port is arranged at the bottom end of the glass ball valve core, an exhaust channel is formed in the bottom end of the valve port, a rubber sleeve is arranged on one side of the plastic plug, a connecting rod is arranged on the surface of the rubber sleeve, a fixed shaft is arranged at the bottom end of the connecting rod, a connecting shaft is arranged at the top end of the fixed shaft, and an adjusting rod is arranged on the surface of the connecting shaft.

Preferably, the valve port is communicated with the bottom of the conical plastic plug through an exhaust channel, and the upper inner wall of the valve port is provided with a thread structure.

Preferably, the glass ball valve core is pressed on the conical ball valve port through a spring, and the exhaust pressure is adjusted through a plastic plug.

Preferably, the surface of the valve port at the top end of the exhaust channel is provided with a sealing rubber ring, and the valve port is sealed by the sealing rubber ring and the glass ball valve core.

Preferably, the number of the fixed shafts is two, and the two fixed shafts are respectively arranged on the surfaces of the two sides of the plastic plug.

Preferably, the connecting rods are provided with two connecting rods, and the top ends of the two connecting rods are fixed on two sides of the same connecting shaft.

Preferably, the spring is made of an aluminum alloy material, and the surface of the spring is effectively reduced in corrosion by being coated with epoxy resin.

Preferably, the fixed shaft is an elastic rotating shaft and has an elastic automatic reset function.

Compared with the prior art, the utility model provides an automatic vent plug for a test tube, which has the following beneficial effects:

the automatic exhaust plug for the test tube is provided with a plastic plug inside conical plastic, the bottom end of the plastic plug is provided with a spring, the top end of the spring is provided with a glass ball valve core, the glass ball valve core is arranged at a valve port of an exhaust passage, a conical plastic plug is placed into a test tube opening, an adjusting rod above the plastic plug is held, the adjusting rod is pressed inwards, a connecting rod on a fixed shaft at the bottom end of the adjusting rod is folded inwards, a rubber sleeve on the surface of the conical plastic plug is bent inwards, the conical plastic plug is more easily placed into the top end of the test tube, the conical plastic plug is fixed at the top end of the test tube, when gas is generated in the test tube, if the pressure in the test tube rises, the force acting on the glass ball exceeds the spring force, the glass ball is jacked up, and the gas is exhausted through the exhaust passage on the automatic exhaust plug and exhaust holes in the plug. If use this automatic vent plug in the test tube, not only can realize the mouth of pipe sealed, can also be with the automatic discharge of the gas that produces during the reaction in the test tube, the incident takes place after preventing the flatulence, when the test tube plug is taken off to needs, press down the regulation pole in once more, the gum cover that makes toper plastics stopper surface inwards bends and reduces the test tube plug and makes the test tube plug easily extract at the frictional force on test tube surface, compare with traditional test tube plug, it is safer in the novel automatic vent plug use, it is more convenient to plug in simultaneously and pull out.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a schematic view of an automatic vent plug for a test tube according to the present invention;

FIG. 2 is a schematic view of the structure of the automatic venting plug for test tubes in venting state according to the present invention;

FIG. 3 is a schematic view of an external structure of an automatic vent plug for a test tube according to the present invention;

FIG. 4 is a schematic structural view of an automatic vent plug furled rubber sleeve for a test tube according to the present invention;

in the figure: 1. a conical plastic plug; 2. a plastic plug; 3. a spring; 4. a glass ball valve core; 5. a rubber sleeve; 6. an exhaust passage; 7. a valve port; 8. an exhaust hole; 9. a connecting rod; 10. a fixed shaft; 11. a connecting shaft; 12. and adjusting the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be interconnected through one or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides an automatic venting plug for test tube, including toper plastics stopper 1 and plastics end cap 2, the inside of toper plastics stopper 1 is provided with plastics end cap 2, one side of plastics end cap 2 is provided with exhaust hole 8, the bottom of plastics end cap 2 is provided with spring 3, the bottom of spring 3 is provided with glass ball case 4, the bottom of glass ball case 4 is provided with valve port 7, the bottom of valve port 7 is provided with exhaust passage 6, one side of plastics end cap 2 is provided with rubber sleeve 5, the surface of rubber sleeve 5 is provided with connecting rod 9, the bottom of connecting rod 9 is provided with fixed axle 10, the top of fixed axle 10 is provided with connecting axle 11, the surface of connecting axle 11 is provided with adjusts pole 12.

An automatic vent plug for a test tube is characterized in that a valve port 7 is communicated with the bottom of a conical plastic plug 1 through a vent channel 6, the inner wall of the upper portion of the valve port is of a threaded structure, a glass ball valve core 4 is pressed on the conical ball valve port 7 through a spring 3, exhaust pressure is adjusted through a plastic plug 2, a surface sealing rubber ring of the valve port 7 at the top end of the vent channel 6 is sealed with the valve port 7 of the glass ball valve core 4 through the sealing rubber ring, two fixing shafts 10 are arranged on the surfaces of two sides of the plastic plug 2 respectively, two connecting rods 9 are arranged on the surfaces of the two sides, the top ends of the two connecting rods 9 are fixed on two sides of a same connecting shaft 11, the spring 3 is made of aluminum alloy materials, corrosion is effectively reduced by smearing the surface of the spring 3 through epoxy resin, the fixing shaft 10 is an elastic rotating shaft, and the fixing shaft 10 has an elastic automatic resetting function.

The working principle and the using process of the utility model are as follows: after the test tube is installed, the interior of the test tube where the conical plastic plug 1 needs to be placed is held by the adjusting rod 12 above the plastic plug 2 in the conical plastic plug 1, the adjusting rod 12 is pressed inwards, so that the connecting rod 9 on the surface of the fixed shaft 10 at the bottom end of the adjusting rod 12 is folded inwards, the connecting rod 9 pulls the rubber sleeve 5 on the surface of the conical plastic plug 1 to bend inwards, the diameter of the conical plastic plug 1 is folded, the conical plastic plug 1 is more easily placed at the top end of the test tube, then the adjusting rod 12 is loosened to enable the rubber sleeve 5 to reset the conical plastic plug 1, the rubber sleeve 5 is fixed at the top end of the test tube, after gas is generated in the test tube, if the pressure in the test tube rises, the force acting on the glass ball valve core 4 exceeds the force of the spring 3, the glass ball valve core 4 is jacked up, and the gas is exhausted through the exhaust channel 6 on the automatic exhaust plug and the exhaust hole 8 on the plastic plug 2. The test tube is applied to the automatic core vent, not only can realize the mouth of pipe is sealed, can also be with the automatic discharge of the gas that produces when the reaction in the test tube, the incident takes place after preventing flatulence, when the test tube stopper is taken off to needs, press down regulation pole 12 in once more, make the rubber sleeve 5 incurving reduction test tube stopper of toper plastics stopper surface 1 make the test tube stopper easily extract at the frictional force on test tube surface, compare with traditional test tube stopper, it is safer in the novel automatic core vent use, it is more convenient to plug in and pull out simultaneously, promote convenience and security in the experimentation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a test tube is with automatic core vent, includes toper plastics stopper (1) and plastics end cap (2), its characterized in that: the plastic plug is characterized in that a plastic plug (2) is arranged inside the conical plastic plug (1), an exhaust hole (8) is formed in one side of the plastic plug (2), a spring (3) is arranged at the bottom end of the plastic plug (2), a glass ball valve core (4) is arranged at the bottom end of the spring (3), a valve port (7) is arranged at the bottom end of the glass ball valve core (4), an exhaust channel (6) is arranged at the bottom end of the valve port (7), a rubber sleeve (5) is arranged on one side of the plastic plug (2), a connecting rod (9) is arranged on the surface of the rubber sleeve (5), a fixed shaft (10) is arranged at the bottom end of the connecting rod (9), a connecting shaft (11) is arranged at the top end of the fixed shaft (10), and an adjusting rod (12) is arranged on the surface of the connecting shaft (11).

2. An automatic vent plug for test tubes according to claim 1, characterized in that: the valve port (7) is communicated with the bottom of the conical plastic plug (1) through an exhaust channel (6), and the inner wall of the upper part of the valve port is provided with a thread structure.

3. An automatic vent plug for test tubes according to claim 1, characterized in that: the glass ball valve core (4) is pressed on the conical ball valve port (7) through a spring (3), and exhaust pressure is adjusted through the plastic plug (2).

4. An automatic vent plug for test tubes according to claim 1, characterized in that: and the surface of the valve port (7) at the top end of the exhaust channel (6) is sealed with a rubber ring, and the valve port (7) is sealed with the glass ball valve core (4) through the rubber ring.

5. An automatic vent plug for test tubes according to claim 1, characterized in that: the number of the fixed shafts (10) is two, and the two fixed shafts (10) are respectively arranged on the surfaces of the two sides of the plastic plug (2).

6. An automatic vent plug for test tubes according to claim 1, characterized in that: the two connecting rods (9) are arranged, and the top ends of the two connecting rods (9) are fixed on two sides of the same connecting shaft (11).

7. An automatic vent plug for test tubes according to claim 1, characterized in that: the spring (3) is made of an aluminum alloy material, and the surface of the spring (3) is effectively reduced in corrosion by being coated with epoxy resin.

8. An automatic vent plug for test tubes according to claim 1, characterized in that: the fixed shaft (10) adopts an elastic rotating shaft, and the fixed shaft (10) has an elastic automatic reset function.

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