CN213000060U - Durable dropper - Google Patents

Abstract

The utility model discloses a durable dropper, which comprises a push rod and a pipe barrel, wherein a piston is arranged in the pipe barrel, one end of the pipe barrel is provided with a drip nozzle, and the other end of the pipe barrel is provided with a handle; one end and the piston of push rod are connected, and the handle is connected to the other end of push rod, is provided with first spring between handle and the handle, and first spring housing is established on the push rod, and the drip nozzle is rotatable to be installed at the bobbin end, and the bobbin end is provided with the drip mouth, is provided with the valve that is used for opening, shelters from and closes the drip mouth on the drip nozzle, and a leak protection is sealed to be connected to the valve bottom and is sealed the pad, and valve and leak protection are sealed to be filled up. The utility model discloses when using, the handle lower part pipe letter is held between fingers to thumb and middle finger, and the forefinger passes through the handle push rod that pushes down, carries out the dropping liquid, then loosens the forefinger behind the dropping liquid, and the push rod rises under the effect of first spring, in the liquid admission pipe letter, can control the dropping liquid volume through rotatory drip nozzle, can also seal the bobbin through rotatory drip nozzle after using the completion, prevents external pollution.

Description

Durable dropper

Technical Field

The utility model relates to a dropper, in particular to a durable dropper.

Background

The dropper comprises a fat belly dropper and a common dropper. The rubber dropper mainly comprises a rubber nipple and a glass tube with a sharp mouth, and the rubber on the dropper is easy to age and adhere, so that the rubber head is easy to separate from the tube rod to cause the tube rod to break.

In this regard, some have improved the dropper. Chinese patent: CN202893374U, patentee: marshuihu, an easily controlled durable dropper is disclosed, the outer tube is provided with scales, the lower end of the outer tube is tapered, the upper end of the outer tube is provided with an oval shoulder, the shoulder is provided with a circular groove, the outer tube is internally provided with a piston, the upper end of the piston is provided with a snap cap, a spring is arranged between the snap cap and the shoulder of the outer tube, and the lower end of the spring is embedded in the circular groove on the shoulder. The dropper solves the defects that the prior dropper rubber cap is easy to age and the capacity is not easy to control, has the advantages of easy capacity control, convenient operation and long service life, can be widely applied to laboratories and hospitals, can replace burettes, and has wide market prospect. However, when the piston of the dropper is pressed down, the dropping liquid amount is relatively large, the liquid amount is not well controlled, and the dropper cannot realize sealing after being used and is easily polluted by bacteria in the outside air.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, provide a durable burette, easy operation, durable, convenient to use can control the dropping liquid volume through rotatory drip nozzle, can also seal the bobbin through rotatory drip nozzle after using the completion, prevents external pollution.

In order to realize the above purpose, the utility model adopts the technical scheme that: the piston-free water dispenser comprises a push rod and a pipe barrel, wherein a piston is arranged in the pipe barrel, one end of the pipe barrel is provided with a drip nozzle, and the other end of the pipe barrel is provided with a handle; one end and the piston of push rod are connected, the handle is connected to the other end of push rod, be provided with first spring between handle and the handle, and first spring housing is established on the push rod, and the drip nozzle is rotatable to be installed at the bobbin end, and the bobbin end is provided with the drip mouth, is provided with the valve that is used for opening, shelters from and closes the drip mouth on the drip nozzle, and a leak protection is sealed to be connected to the bottom of valve and is sealed the pad, and valve and leak protection are sealed to be filled up and.

When the pipe dropping device is used, the dropping nozzle is rotated clockwise or anticlockwise, so that the slotted hole and the dropping liquid port are overlapped, crossed and staggered, the maximum dropping liquid amount is realized when the slotted hole is overlapped with the dropping liquid port, the dropping liquid amount is reduced when the slotted hole is crossed with the dropping liquid port, and the dropping liquid is closed when the hole is staggered with the dropping liquid port, thereby being beneficial to preventing pollutants in the air from polluting liquid in the pipe barrel.

Further, the dripping nozzle comprises a barrel body and a nozzle body arranged at the tail end of the barrel body, wherein the barrel body comprises an outer barrel and an inner barrel, a shaft body is arranged in the inner barrel, the upper end of the shaft body is inserted into a through hole in the middle of the tail end of the barrel, the lower end of the shaft body is connected with the inner barrel through a support, and the valve is fixedly connected with the shaft body; a second spring is arranged between the pipe barrel and the drip nozzle.

Furthermore, the outer barrel, the inner barrel, the nozzle body, the bracket and the shaft body are integrally formed by injection molding.

Furthermore, the valve and the shaft body are fixed through screws.

Further, a second spring is disposed in an annular groove between the outer and inner barrels.

Further, an annular nylon cushion is arranged between the second spring and the pipe barrel.

Furthermore, the leak-proof sealing gasket is completely consistent with the shape of the valve.

The utility model has the advantages that: the utility model discloses when using, the handle lower part pipe letter is held between fingers to thumb and middle finger, and the forefinger passes through the handle push rod that pushes down, carries out the dropping liquid, then loosens the forefinger behind the dropping liquid, and the push rod rises under the effect of first spring, in the liquid admission pipe letter, can control the dropping liquid volume through rotatory drip nozzle, can also seal the bobbin through rotatory drip nozzle after using the completion, prevents external pollution.

The utility model discloses a clockwise or anticlockwise rotation drip nozzle makes slotted hole and drip mouth take place coincidence, alternately and crisscross, realizes the biggest dropping liquid volume when slotted hole and drip mouth coincidence, reduces the dropping liquid volume when slotted hole and drip mouth intersect, closes the dropping liquid when hole and drip mouth are crisscross, is favorable to preventing that the pollutant in the air from leading to the fact the pollution to the interior liquid of bobbin simultaneously.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

The text labels in the figures are represented as: 1. a handle; 2. a push rod; 3. a first spring; 4. a handle; 5. a tube barrel; 6. a piston; 7. a drip nozzle; 8. a nylon pad; 51. a drip port; 71. an outer cylinder; 72. a second spring; 73. an inner barrel; 74. a mouth body; 75. a slot; 76. a support; 77. a shaft body; 78. a valve; 79. a leak-proof gasket.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

As shown in fig. 1-3, the specific structure of the present invention is: the device comprises a push rod 2 and a pipe barrel 5, wherein a piston 6 is arranged in the pipe barrel 5, one end of the pipe barrel 5 is provided with a drip nozzle 7, and the other end of the pipe barrel 5 is provided with a handle 4; one end and the piston 6 of push rod 2 are connected, handle 1 is connected to the other end of push rod 2, be provided with first spring 3 between handle 1 and the handle 4, first spring 3 cover is established on push rod 2, the rotatable installation of drip nozzle 7 is terminal at bobbin 5, bobbin 5 end is provided with drip mouth 51, be provided with the valve 78 that is used for opening, shelters from and closes drip mouth 51 on the drip nozzle 7, a leak protection sealed pad 79 is connected to the bottom of valve 78, be provided with slotted hole 75 on valve 78 and the leak protection sealed pad 79.

When the device is used, the drip nozzle 7 is rotated clockwise or anticlockwise, so that the slotted hole 75 and the drip opening 51 are overlapped, crossed and staggered, the maximum drip amount is realized when the slotted hole 75 is overlapped with the drip opening 51, the drip amount is reduced when the slotted hole 75 is crossed with the drip opening 51, and the drip is closed when the hole 75 is staggered with the drip opening 51, and meanwhile, the pollution of pollutants in the air to liquid in a pipe barrel is favorably prevented.

Preferably, the drip nozzle 7 comprises a cylinder body and a nozzle body 74 arranged at the tail end of the cylinder body, wherein the cylinder body comprises an outer cylinder 71 and an inner cylinder 73, a shaft body 77 is arranged in the inner cylinder 73, the upper end of the shaft body 77 is inserted into a through hole in the middle of the tail end of the cylinder tube 5, the lower end of the shaft body 77 is connected with the inner cylinder 73 through a support 76, and a valve 78 is fixedly connected with the shaft body 77; a second spring 72 is arranged between the tube 5 and the drip nozzle 7.

Preferably, the outer cylinder 71, the inner cylinder 73, the nozzle body 74, the bracket 76 and the shaft body 77 are integrally formed by injection molding.

Preferably, the valve 78 is fixed to the shaft 77 by screws.

Preferably, the second spring 72 is disposed in an annular groove between the outer cylinder 71 and the inner cylinder 73.

Preferably, an annular nylon cushion 8 is disposed between the second spring 72 and the barrel 5.

Preferably, the leak-proof gasket 79 is completely conformed to the shape of the valve 7.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims (7)

1. A durable dropper comprises a push rod (2) and a pipe barrel (5), wherein a piston (6) is arranged inside the pipe barrel (5), one end of the pipe barrel (5) is provided with a dropping nozzle (7), and the other end of the pipe barrel (5) is provided with a handle (4); one end and piston (6) of push rod (2) are connected, handle (1) is connected to the other end of push rod (2), be provided with first spring (3) between handle (1) and handle (4), first spring (3) cover is established on push rod (2), its characterized in that, the rotatable installation of drip nozzle (7) is terminal in bobbin (5), bobbin (5) end is provided with drip mouth (51), be provided with on drip nozzle (7) and be used for opening, shelter from and close valve (78) of drip mouth (51), a leak protection sealed pad (79) is connected to the bottom of valve (78), be provided with slotted hole (75) on valve (78) and the leak protection sealed pad (79).

2. The durable dropper according to claim 1, wherein the dropper (7) comprises a barrel and a nozzle body (74) disposed at the end of the barrel, wherein the barrel comprises an outer barrel (71) and an inner barrel (73), the inner barrel (73) is provided with a shaft body (77), the upper end of the shaft body (77) is inserted into a through hole in the middle of the end of the barrel (5), the lower end of the shaft body (77) is connected with the inner barrel (73) through a bracket (76), and the valve (78) is fixedly connected with the shaft body (77); a second spring (72) is arranged between the pipe barrel (5) and the drip nozzle (7).

3. A durable dropper according to claim 2 wherein the outer barrel (71), inner barrel (73), mouthpiece (74), support (76) and shaft (77) are integrally injection moulded.

4. A durable dropper according to claim 3 wherein the valve (78) is secured to the shaft (77) by screws.

5. A durable dropper according to claim 4 wherein the second spring (72) is located in an annular groove between the outer barrel (71) and the inner barrel (73).

6. A durable dropper according to claim 5 wherein an annular nylon pad (8) is provided between the second spring (72) and the barrel (5).

7. A durable dropper according to claim 6 wherein the leak-proof seal (79) conforms substantially to the shape of the valve (78).

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