CN111852818B

CN111852818B - Compressed air adapter, proportioning system and feeding method thereof

Info

Publication number: CN111852818B
Application number: CN202010617237.XA
Authority: CN
Inventors: 马里奥·弗利斯
Original assignee: Vermes Microdispensing GmbH
Current assignee: Vermes Microdispensing GmbH
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2022-08-26
Anticipated expiration: 2040-06-30
Also published as: CN111852818A

Abstract

The invention discloses a compressed air adapter, a proportioning system and a feeding method thereof, wherein the compressed air adapter comprises a base body, a closing element, an adjusting element and an anti-twisting element, wherein the closing element comprises an airflow channel allowing an external air source to flow, the adjusting element is in threaded connection with the base body, the spiral movement direction of the adjusting element is consistent with the axial direction of the base body, the adjusting element can drive the closing element to synchronously axially move when in spiral movement, and the anti-twisting element is used for limiting the closing element to rotate along with the adjusting element. This compressed air adapter easy to assemble need not artificial meticulous to control the assembly application of force, is favorable to reducing the degree of difficulty when installing and dismantling the adapter.

Description

Compressed air adapter, proportioning system and feeding method thereof

Technical Field

The invention relates to the technical field of proportioning systems, in particular to a compressed air adapter, a proportioning system and a feeding method of the proportioning system.

Background

In a liquid dispensing system, the supply mechanism generally includes an adapter, a rubber cylinder and a luer connector, wherein the adapter is mounted on the top of the rubber cylinder and seals the inner area of the rubber cylinder, the luer connector is precisely connected to the bottom of the rubber cylinder through a threaded connection, the adapter is connected with external air pressure, and the external air pressure acts on the fluid in the rubber cylinder so as to push the fluid to flow through the luer connector and be conveyed from the luer connector to a fluid groove. To seal the interior of the cartridge, the adapter typically has an O-ring that is an interference fit with the inner circumferential wall of the cartridge and that is fitted over the piston.

At present, in the process of assembling the adapter and the rubber cylinder, an operator needs to hold the rubber cylinder with one hand and twist the adapter with the other hand to forcibly extrude the piston and the O-shaped ring on the piston to be rotationally pushed into the rubber cylinder, the force exertion requirement of the mode on the operator is harsh, enough acting force is exerted on the adapter, and the rubber cylinder needs to be tightly held to avoid synchronous rotation of the adapter along with the adapter. Meanwhile, in the process of detaching the adapter from the rubber cylinder, if the rubber cylinder is not firmly held, the rubber cylinder is easily pulled out from the base of the rubber cylinder.

Therefore, how to make the installation and the disassembly of the adapter more convenient and easy by improving the construction and the assembly method of the adapter is an important technical problem which needs to be solved by the technical personnel in the field at present.

Disclosure of Invention

The invention provides a compressed air adapter, a batching system and a feeding method thereof, which are convenient to install, do not need artificial fine control assembly force application, and are beneficial to reducing the difficulty in installing and disassembling the adapter.

In order to achieve the above object, the present invention provides a compressed air adapter including:

a substrate;

a closure element comprising a gas flow passage allowing flow of an external gas source;

the adjusting element is in threaded connection with the base body, the spiral motion direction of the adjusting element is consistent with the axial direction of the base body, and the adjusting element can drive the sealing element to synchronously axially move when in spiral motion;

and an anti-twist element for limiting the rotation of the closing element following the adjustment element.

Preferably, the bottom of the adjusting element abuts against the closing element, a first step is arranged in the adjusting element, the closing element comprises a connecting portion and a sealing portion connected with the connecting portion, a receiving assembly is detachably connected to the end portion of the connecting portion, and the receiving assembly can abut against the first step.

Preferably, the receiving assembly comprises a fastener, the bottom of the fastener is in threaded connection with the connecting part, a second step is arranged on the fastener, and the second step is lapped on the first step.

Preferably, an anti-torsion block is arranged at the end part of the connecting part, the bearing assembly comprises a fastener and an anti-torsion fitting sleeved on the outer periphery of the anti-torsion block, and the fastener is in threaded connection with the connecting part;

a first surface of the anti-twist fitting may abut the fastener and a second surface of the anti-twist fitting may abut the first step, the first and second surfaces being opposing surfaces.

Preferably, the anti-torsion member has a sheet-like structure having a non-circular through hole, and the outer peripheral wall of the anti-torsion block is fitted with the non-circular through hole of the anti-torsion member.

Preferably, the bottom of the adjusting element abuts against the closing element, the closing element comprises a connecting part and a sealing part connected with the connecting part, the end part of the connecting part is provided with an assembling hole, a bolt is detachably inserted into the assembling hole, and the bolt is partially inserted into the assembling hole and can abut against the top of the adjusting element.

As preferred scheme, the base member including be equipped with the inner chamber the body, with spacing portion that the body is connected and with the screw thread portion that the body is connected, the inner chamber of body is used for holding the closure element who follows when adjusting element unscrews and do the axial upward movement, screw thread portion with adjusting element threaded connection, spacing portion be used for with the cooperation of container joint in order to restrict the container with the relative displacement of base member.

Preferably, the limiting part is U-shaped and is used for limiting the position of the container so that the closing element and the container are on the same axis, and a groove space is arranged between the body and the limiting part and is used for accommodating a limiting flange arranged at the top of the container.

Preferably, the adjusting element is provided with a first through hole and a second through hole which are communicated with each other, and the diameter of the first through hole is larger than that of the second through hole to form the first step;

at least part of the fastener is located in the first through hole, and at least part of the connecting part is located in the second through hole.

Preferably, a fourth through hole is formed in the closing element, the fourth through hole forms the airflow channel, and the fastening piece is provided with a third through hole communicated with the airflow channel.

Preferably, the fastening member has a screw connection portion in threaded connection with the fourth through hole, and an outer peripheral wall of the screw connection portion and an inner peripheral wall of the fourth through hole are provided with mutually matched threads.

Preferably, the sealing portion is provided with a sealing ring and a sealing groove for accommodating the sealing ring.

As a preferred scheme, the axial direction of the base body is provided with a limiting groove, the peripheral wall of the closed element is provided with a limiting hole corresponding to the limiting groove, the anti-torsion element adopts a pin shaft mode, and the pin shaft sequentially penetrates through the limiting groove and the limiting hole.

Preferably, the substrate is provided with a limit groove in the axial direction, the anti-twisting element is an anti-twisting bump formed on the outer circumferential wall of the sealing element, and the anti-twisting bump can move in the limit groove in the axial direction.

Preferably, the closing element comprises a connecting part and a sealing part, wherein the end part of the connecting part is provided with an anti-torsion block, the sealing part is connected with the connecting part, and the end part of the connecting part is detachably connected with a bearing assembly, and the bearing assembly comprises a fastening piece in threaded connection with the connecting part of the closing element and an anti-torsion fitting sleeved on the outer periphery of the anti-torsion block;

the anti-twist fitting performs a simultaneous axial non-rotational movement with the closure element, the anti-twist fitting interrupting the direct connection of the fastener and the adjustment element so that the threaded connection between the fastener and the connection of the closure element remains unchanged when the adjustment element is rotated.

Preferably, the adjusting element includes a grip portion and a rotating portion connected to the grip portion, the rotating portion is screwed to the base, and the grip portion is capable of abutting against an end surface of the base.

In another aspect of the present invention, there is provided a dosing system comprising a container, a connector, and a compressed air adapter as in any one of the above embodiments, wherein the compressed air adapter and the connector are connected to two ends of the container respectively.

In another aspect of the present invention, there is provided a feeding method using the proportioning system in the above technical solution, comprising the steps of:

connecting the container with the joint;

injecting a fluid to be supplied into the container;

clamping and matching the base body with the container;

operating the adjusting element to make a spiral motion relative to the base body;

connecting the airflow channel with an external air source by using a hose;

an external gas source is turned on to inject the fluid in the container into the fitting by gas pressure.

Compared with the prior art, the invention has the beneficial effects that:

the invention relates to a compressed air adapter, which comprises a base body, a sealing element, an adjusting element and an anti-twisting element, wherein the base body is tightly matched with a container for containing liquid substances, the sealing element comprises an airflow channel allowing an external air source to flow, the sealing element can be matched with an internal flow channel of the container in an inserting manner so that the internal flow channel is communicated with the outside only through the airflow channel of the sealing element, the adjusting element is connected with the base body in a threaded manner and the spiral movement direction of the adjusting element is consistent with the axial direction of the base body, the base body and the container are coaxially arranged, the sealing element can be driven to synchronously move axially when the adjusting element moves spirally, and the rotation of the sealing element along with the adjusting element can be limited through the arrangement of the anti-twisting element; in this way, when pushing the closure element into or out of the container, the operator can easily mount or dismount the compressed air adapter on the container by simply holding the base body of the compressed air adapter and rotating the adjustment element, the movement principle of which is: the base body is held to enable the relative position of the base body and the container to be basically fixed, the adjusting element is rotated through force application to enable the adjusting element to generate spiral motion relative to the base body, the sealing element is driven to generate synchronous axial motion, the anti-twisting element can ensure that the motion direction of the sealing element is only axial, namely, the adjusting element does linear motion relative to the container, the rotating motion of the sealing element is avoided, so that the resistance of the sealing element from the container can be reduced, the sealing element can be pushed into or withdrawn from the container more easily, meanwhile, the rotating force is prevented from being transferred to the container or a connector connected to the bottom of the container, the container is prevented from being pulled out from a base of the container or damaged by connecting threads of the container and the connector, therefore, the force application of manual fine control assembly is not needed, and the difficulty in installation and detachment of the adapter is reduced.

Drawings

FIG. 1 is an exploded view of a compressed air adapter and container according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of an assembled compressed air adapter of a first embodiment of the present invention;

FIG. 3 is a perspective view of a base of a compressed air adapter according to a first embodiment of the present invention;

FIG. 4 is a perspective view of a closure member of a compressed air adapter in accordance with a first embodiment of the present invention;

FIG. 5 is a longitudinal cross-sectional view of FIG. 4;

FIG. 6 is a longitudinal cross-sectional view of an adjustment member of a compressed air adapter according to a first embodiment of the present invention;

FIG. 7 is an exploded view of a compressed air adapter and container according to a second embodiment of the present invention;

FIG. 8 is a schematic view of the assembly of a compressed air adapter and a container according to a second embodiment of the present invention;

FIG. 9 is a schematic of the feed method of a dosing system of the present invention.

Wherein, 10, a substrate; 11. a body; 12. a limiting part; 13. a groove space; 14. a limiting groove; 15. a threaded portion; 20. a closure element; 21. a connecting portion; 211. a torsion resistant block; 212. an assembly hole; 22. a sealing part; 221. a seal ring; 222. a sealing groove; 23. a fourth via hole; 24. a limiting hole; 30. an adjustment element; 31. a first step; 32. a first through hole; 33. a second through hole; 34. a grip portion; 341. a striped structure; 35. a rotating part; 40. an anti-twist element; 50. a receiving assembly; 51. a fastener; 511. a third through hole; 512. a screw connection part; 513. a second step; 52. an anti-twist fitting; 53. a bolt; 100. a container; 110. a limiting flange; A. the axis of the substrate.

Detailed Description

The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example one

Referring to fig. 1, a compressed air adapter of the present invention is schematically shown, which comprises a base 10, a closing element 20, an adjusting element 30 and an anti-twisting element 40, wherein the base 10 can be tightly fitted with a container 100 to fix the relative position, the closing element 20 comprises an air flow channel allowing an external air source to flow, the closing element 20 can be inserted into and fitted with an internal flow channel of the container 100, so that the internal flow channel of the container 100 is communicated with the outside only through the air flow channel, the adjusting element 30 is screwed with the base 10 and has a screwing direction consistent with the direction of the axis a of the base 10, the base 10 and the container 100 are coaxially arranged, that is, the screwing direction of the adjusting element 30 is also consistent with the direction of the axis a of the container 100, the adjusting element 30 can bring the closing element 20 to synchronously move axially when screwing, the anti-twisting element 40 is used for limiting the closing element 20 to rotate along with the adjusting element 30, so that the closure element 20 is only axially moved by the screw movement of the adjustment element 30 without rotation.

Based on the above technical features, when the closing element 20 is pushed into or withdrawn from the container 100, the operator only needs to hold the base body 10 of the compressed air adapter and rotate the adjusting element 30, so as to conveniently mount or dismount the compressed air adapter on or from the container 100, and the movement principle is as follows: holding the base body 10, making the relative position of the base body 10 and the container 100 basically fixed, rotating the adjusting element 30 by applying force to generate a screw motion relative to the base body 10, the adjusting element 30 driving the closing element 20 to generate a synchronous axial motion when the screw motion is generated, and the anti-twisting element 40 ensuring that the motion direction of the closing element 20 is only axial, i.e. the closing element 20 moves linearly relative to the container 100, avoiding the closing element 20 from rotating, thus reducing the resistance of the closing element 20 from the container 100, making it easier for the closing element 20 to push in or withdraw from the container 100, preventing the rotating force of the closing element 20 generated by the rotating motion from being transferred to the container 100 or a joint connected to the bottom of the container 100, avoiding the container 100 from pulling out from the base thereof or damaging the screw thread connecting the container 100 and the joint, thereby avoiding the need of applying force for manually controlling assembly, thereby facilitating a reduction in the difficulty of installing and removing the adapter.

Specifically, as shown in fig. 1 and 2, a bottom of the adjusting element 30 abuts against the closing element 20, a first step 31 is provided in the adjusting element 30, and the closing element 20 includes a connecting portion 21 and a closing portion connected to the connecting portion 21. The closing portion may be inserted into the internal flow passage of the container 100, so that the internal flow passage of the container 100 is communicated with the outside only through the airflow passage. The bottom of the adjusting element 30 abuts against the top of the closure portion, so that when the adjusting element 30 performs a downward screw motion, the adjusting element 30 pushes the closure element 20 to move axially downward, and the closure element 20 is pushed into the container 100. Referring to fig. 1, a receiving assembly 50 is detachably connected to an end of the connecting portion 21, and the receiving assembly 50 can abut against the first step 31, so that when the adjusting element 30 makes an upward spiral motion, the adjusting element 30 pushes the receiving assembly 50 to drive the closing element 20 to move axially upward, thereby withdrawing the closing element 20 from the container 100.

Based on the structure of the adjustment element 30 and the closure element 20 of the first embodiment, the specific configuration of the receiving assembly 50 can take the following two forms:

in one embodiment, referring to fig. 2, the receiving assembly 50 includes a fastening member 51, a bottom of the fastening member 51 is in threaded connection with the connecting portion 21, a second step 513 is provided on the fastening member 51, the second step 513 is overlapped on the first step 31, when the adjusting element 30 is screwed upwards, an axial force is transmitted to the fastening member 51 through interaction between the first step 31 and the second step 513, and the fastening member 51 drives the closing element 20 in threaded connection therewith to move upwards and axially synchronously.

Alternatively, as shown in fig. 1, 2 and 4, the receiving assembly 50 includes a fastening member 51 and an anti-torque fitting 52, the end of the connecting portion 21 is provided with an anti-torque block 211, the anti-torque fitting 52 is sleeved on the outer periphery of the anti-torque block 211, the fastening member 51 is screwed with the connecting portion 21, a first surface (an upper surface shown in fig. 2) of the anti-torque fitting 52 can abut against the fastening member 51, a second surface (a lower surface shown in fig. 2) of the anti-torque fitting 52 can abut against the first step 31, that is, the fastening member 51 and the adjusting element 30 are locked with the anti-torque fitting 52 from both up and down directions, when the adjusting element 30 is screwed upwards, axial force is transmitted to the anti-torque fitting 52 through interaction of the first step 31 and the anti-torque fitting 52, and the anti-torque fitting 52 is transmitted to the fastening member 51, the fastening element 51 carries the closure element 20 screwed thereto in a synchronous upward axial movement.

Preferably, the anti-twist fit 52 is a sheet-like structure having a non-circular through hole, and the outer circumferential wall of the anti-twist block 211 is engaged with the non-circular through hole of the anti-twist fit 52, so that the anti-twist fit 52 is prevented from rotating in a state where the closure element 20 is restrained from rotating by the anti-twist element 40. Furthermore, the direct connection of the fastening element 51 to the adjustment element 30 is interrupted by the anti-twist fit 52, so that the threaded connection between the fastening element 51 and the connecting portion 21 of the closure element 20 remains unchanged when the adjustment element 30 is rotated.

That is, since the first step 31 of the adjustment element 30 abuts only the anti-twist fitting 52 and the peripheral wall of the first through hole 32 in the adjustment element 30 is not in close contact with the fastening member 51, the anti-twist fitting 52 absorbs a part of the torque generated by the adjustment element 30, and prevents the fastening member 51 and the closure element 20 from being loosened due to the transmission of the torque generated by the adjustment element 30 to the fastening member 51. The torque generated by the screwing movement of the adjusting element 30 is completely absorbed by the torsion-proof element 40 and the torsion-proof fitting 52, thereby ensuring that only an axial movement of the closure element 20 occurs.

In a specific embodiment, as shown in fig. 1 and 3, the base 10 includes a body 11, a position-limiting portion 12 connected to the body 11, and a threaded portion 15 connected to the body 11, an inner cavity of the body 11 is used for accommodating the closing element 20 that moves in the axial direction when the adjusting element 30 is screwed out, the threaded portion 15 is in threaded connection with the adjusting element 30, and the position-limiting portion 12 is used for being in snap-fit engagement with the container 100 to limit the relative displacement between the container 100 and the base 10, so that the container 100 can be held without shaking when the base 10 is held during operation, and the force of the closing element 20 on the container 100 is prevented from being transmitted to other parts such as a joint.

More specifically, referring to fig. 3, the position-limiting part 12 is U-shaped and is used for limiting the position of the container 100 so that the closing element 20 and the container 100 are on the same axis, the position-limiting part 12 abuts against the bottom surface of the position-limiting flange 110 of the container 100, and a slight gap exists between the position-limiting part 12 and the outer peripheral wall of the container 100 for convenient installation and disassembly. A groove space 13 is arranged between the body 11 and the limiting part 12, the groove space 13 is used for accommodating a limiting flange 110 arranged at the top of the container 100, and the lower end surface of the limiting flange 110 of the container 100 is abutted against the upper end surface of the limiting part 12. And the arrangement of the groove space 13 can be matched with the limiting flanges 100 with different lengths, so that the limiting part 12 is suitable for locking containers 100 with different capacities, the requirement that the conventional adapter needs to be strictly in one-to-one correspondence with the capacity (the length of the limiting flange 110) of the container 100 is avoided, and the universality is stronger.

It should be noted that, after the adapter is assembled with the container 100, if the base body 10 has a small gap with the limiting flange 110 of the container 100 in the groove space 13, a slight change may occur in the relative position of the base body 10 and the container 100 during the pushing in or pulling out of the closing element 20, but the change does not affect the operation or the effect of the present invention.

In this embodiment, please refer to fig. 2 and fig. 6, the adjusting element 30 is provided with a first through hole 32 and a second through hole 33 which are communicated with each other, a diameter of the first through hole 32 is larger than a diameter of the second through hole 33 to form the first step 31, at least a portion of the fastening member 51 is located in the first through hole 32, and at least a portion of the connecting portion 21 is located in the second through hole 33.

Preferably, as shown in fig. 2 and 5, a fourth through hole 23 is formed in the closing element 20, the fourth through hole 23 forms the airflow channel, the fastening member 51 is provided with a third through hole 511 communicating with the airflow channel, in this embodiment, the third through hole 511 extends up and down through the fastening member 51 and faces the airflow channel, and after the closing element 20 is pushed into the container 100, the internal flow passage of the container 100 can communicate with the external space through the third through hole 511 and the airflow channel.

Further preferably, as shown in fig. 2 and 5, the fastening member 51 has a screw-connection portion 512 in threaded connection with the fourth through hole 23, and an outer peripheral wall of the screw-connection portion 512 and an inner peripheral wall of the fourth through hole 23 are provided with mutually matching threads. In this embodiment, the fourth through hole 23 includes two sections with different diameters, and the screw-connection portion 512 is screwed to one section with a larger diameter.

More specifically, referring to fig. 1, 2 and 4, a sealing ring 221 and a sealing groove 222 for accommodating the sealing ring 221 are disposed on the sealing portion 22, and after the sealing portion 22 is pushed into the container 100, the sealing ring 221 is tightly attached to the inner peripheral wall of the container 100 through interference fit, so that the internal flow passage of the container 100 can only communicate with the outside through the airflow passage of the closing element 20.

As a preferred embodiment, referring to fig. 1 to 3, a limit groove 14 is axially formed on the base 10, a limit hole 24 corresponding to the limit groove 14 is formed on the outer peripheral wall of the closing element 20, the anti-twisting element 40 is in a pin shaft manner, the pin shaft sequentially penetrates through the limit groove 14 and the limit hole 24, and the pin shaft inserted into the limit hole 24 can only move along the axial direction limited by the limit groove 14 and cannot move in the circumferential direction, so that the circumferential movement of the closing element 20 is also limited. It should be noted that the pin is detachable, but the pin can be fixed in the limiting hole 24 of the closing element 20 at all times when the compressed air adapter is installed or removed in the container 100 and when the compressed air adapter is in use.

In another embodiment, the base 10 is provided with a limiting groove 14 in the axial direction, the anti-twist element 40 may also be an anti-twist protrusion (not shown) formed on the outer peripheral wall of the sealing element 20, the anti-twist protrusion and the sealing element 20 are integrally formed, and after the anti-twist protrusion is assembled into the limiting groove 14, the anti-twist protrusion can move in the axial direction in the limiting groove 14 but cannot move in the circumferential direction, so that the circumferential movement of the sealing element 20 can also be limited.

As a preferred embodiment, referring to fig. 1 and 6, the adjusting element 30 includes a grip portion 34 and a rotation portion 35 connected to the grip portion 34, the rotation portion 35 is screwed to the base 10, and the grip portion 34 can abut against an end surface of the base 10, thereby limiting a lowest position of the adjusting element 30 in the screwing motion. The outer peripheral wall of the holding portion 34 is provided with a stripe structure 341 to increase friction force and facilitate the holding and screwing of the holding portion 34.

Example two

Referring to fig. 7 and 8, the adjusting member 30 and the closing member 20 of the present embodiment are different from the first embodiment in that: the end of the connecting portion 21 of the closing element 20 is provided with a mounting hole 212, a latch 53 is detachably inserted into the mounting hole 212, and the latch 53 is partially inserted into the mounting hole 212 and can abut against the top of the adjusting element 30, so that when the adjusting element 30 is screwed upwards, the acting force of the adjusting element 30 is directly transmitted to the latch 53 abutting against the top thereof, and the latch 53 drives the closing element 20 to move axially upwards. When the adjusting element 30 is moved spirally downward, the force transmission process is substantially the same as that of the embodiment, and will not be described herein. It will be appreciated that the fitting hole 212 and the latch 53 may be provided in plural, in this embodiment, in two, to improve the stability of the force applied between the closing member 20 and the adjusting member 30.

Furthermore, the cooperation between the inner circumferential wall of the adjustment member 30 and the outer circumferential wall of the closure member 20 may be optionally in one of two ways:

one such method is to add an external step to the outer peripheral wall of the closure member 20 and an internal step to the inner peripheral wall of the adjustment member 30 to overlap the external step of the closure member 20, as shown in fig. 8.

Alternatively, the closure member 20 comprises a vertical smooth outer peripheral wall and the adjustment member 30 comprises a vertical smooth inner peripheral wall, said closure member and adjustment member being adapted to engage the latch only by means of the assembly holes.

Of course, in other embodiments of the present invention, the connection and cooperation between the adjusting element 30 and the closing element 20 can be realized in other manners as long as the functions of the present invention can be achieved, and will not be described herein again.

Specifically, the shapes of the base body 10, the closing member 20, and the adjusting member 30 are all approximately cylindrical, the outer periphery of the compressed air adapter of the present embodiment is also cylindrical, and there is no problem of collision with other parts during the assembly process, while the length direction of the conventional adapter is parallel to the valve body, so that the length direction of the adapter may collide with other parts after the adapter is locked. The compressed air adapter of the present embodiment thus saves more space for installation, and can be installed more easily in any direction against the container 100 after assembly is completed by screwing the luer fitting.

To achieve the same object, the present invention also provides a dosing system comprising a container 100, a connector and the above-mentioned compressed air adapter, said compressed air adapter and said connector being connected to both ends of said container 100, respectively. The dosing system is provided with a compressed air adapter according to an embodiment of the invention. The compressed air adapter provided by the embodiment of the invention can achieve the above effects, and a proportioning system provided with the compressed air adapter also has corresponding technical effects, which are not described herein again.

Likewise, the present invention also provides a method of feeding a dosing system, as shown in fig. 9, comprising the steps of:

s1, connecting the container 100 with a joint;

s2, injecting the fluid to be supplied into the container 100;

s3, clamping and matching the base body 10 with the container 100;

s4, operating the adjusting element 30 to make a spiral motion relative to the base body 10;

s5, connecting the airflow channel with an external air source by using a hose;

s6, opening an external air source to inject the fluid in the container 100 into the joint by air pressure.

In this embodiment, the connector is a luer connector, the container 100 is connected with the luer connector through threads, the container 100 is provided with external threads, and the connector is provided with internal threads which are tightly meshed with the external threads of the container 100. After injecting fluid into the container 100, the base body 10 is clamped and matched with the container 100 to realize tight connection, then the adjusting element 30 is rotated to enable the adjusting element 30 to make spiral motion relative to the base body 10, the closing element 20 is pushed to be pressed into an internal flow passage of the container 100 in an axial motion mode, then a hose is inserted into a third through hole 511 of a fastener to enable the air flow passage to be connected with an external air source, the external air source is opened to introduce air into the internal flow passage of the container 100, the air pressure of the internal flow passage of the container 100 is increased, and the fluid in the container 100 is injected into the connector through high air pressure, so that the feeding process is completed.

In summary, the compressed air adaptor, the metering system and the feeding method provided by the present invention are characterized in that the relative positions of the base body 10 and the container 100 are substantially fixed by connecting the base body 10 and the container 100, the adjusting element 30 moves in a helical manner to drive the closure element 20 to move in a synchronous axial direction, and the anti-twisting element 40 ensures that the movement direction of the closure element 20 is only axial, i.e. the closure element 20 moves linearly relative to the container 100, so as to prevent the closure element 20 from rotating, thereby reducing the resistance of the closure element 20 from the container 100, facilitating the insertion or withdrawal of the closure element 20 into or out of the container 100, preventing the rotation force of the closure element 20 due to the rotation from being transferred to the container 100 or to the adapter connected to the bottom of the container 100, preventing the container 100 from being pulled out of its base or damaging the screw thread connecting the container 100 and the adapter, thereby eliminating the need for manually and finely applying force to control assembly, thereby being beneficial to reducing the difficulty of installing and disassembling the adapter and having higher application and popularization values.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A compressed air adapter, comprising:

a substrate;

the adjusting element is in threaded connection with the base body, the direction of the spiral motion of the adjusting element is consistent with the direction of the axis of the base body, and the adjusting element can drive the sealing element to synchronously axially move when in spiral motion;

2. The compressed air adapter according to claim 1, wherein the bottom of the adjusting element abuts against the closing element, a first step is provided in the adjusting element, the closing element includes a connecting portion and a sealing portion connected to the connecting portion, a receiving member is detachably connected to an end of the connecting portion, and the receiving member can abut against the first step.

3. The compressed air adapter according to claim 2, wherein the receiving assembly comprises a fastening member, the bottom of the fastening member is in threaded connection with the connecting portion, and a second step is arranged on the fastening member and overlaps the first step.

4. The compressed air adapter according to claim 2, wherein an end of the connecting portion is provided with an anti-torsion block, the receiving assembly includes a fastener and an anti-torsion fitting fitted around an outer circumference of the anti-torsion block, the fastener is threadedly connected to the connecting portion;

5. The compressed air adapter according to claim 4, wherein the anti-torque fitting is a tab structure having a non-circular through hole, the outer peripheral wall of the anti-torque block mating with the non-circular through hole of the anti-torque fitting.

6. The compressed air adapter according to claim 1, wherein the bottom of the adjusting member abuts against the closing member, the closing member includes a connecting portion and a sealing portion connected to the connecting portion, a fitting hole is formed at an end of the connecting portion, a plug is detachably inserted into the fitting hole, and the plug is partially inserted into the fitting hole and abuts against the top of the adjusting member.

7. The compressed air adapter according to claim 1, wherein the base body comprises a body provided with an inner cavity, a limiting portion connected with the body and a threaded portion connected with the body, the inner cavity of the body is used for accommodating a sealing element which moves in the axial direction along with the screwing-out of the adjusting element, the threaded portion is in threaded connection with the adjusting element, and the limiting portion is used for being in clamping fit with a container to limit the relative displacement of the container and the base body.

8. A compressed air adaptor according to claim 7 wherein the retaining portion is U-shaped and is adapted to retain the container so that the closure element and container are co-axial, and a recessed space is provided between the body and the retaining portion, the recessed space being adapted to receive a retaining flange provided at the top of the container.

9. The adapter according to claim 4, wherein the adjustment member is provided with a first through hole and a second through hole communicating with each other, the first through hole having a diameter larger than that of the second through hole to form the first step;

10. The adapter of claim 4 wherein said closure member has a fourth through hole formed therein, said fourth through hole forming said airflow passage, said fastener having a third through hole communicating with said airflow passage.

11. The adapter according to claim 10, wherein the fastening member has a screw portion screw-connected to the fourth through hole, and an outer peripheral wall of the screw portion and an inner peripheral wall of the fourth through hole are provided with mutually mating threads.

12. The adapter according to claim 2, wherein the seal portion has a seal ring and a seal groove for receiving the seal ring.

13. The compressed air adapter according to any one of claims 1 to 12, wherein a limiting groove is axially formed on the base body, a limiting hole corresponding to the limiting groove is formed on the outer peripheral wall of the closing element, the anti-twisting element adopts a pin shaft mode, and the pin shaft sequentially penetrates through the limiting groove and the limiting hole.

14. A compressed air adapter according to any one of claims 1 to 12 wherein the base body is provided with a retaining groove in the axial direction, and the anti-twist member is an anti-twist projection formed on the outer peripheral wall of the closure member, the anti-twist projection being axially movable in the retaining groove.

15. A compressed air adapter according to any one of claims 1 to 2, 4 to 5 and 7 to 12, wherein the closing element comprises a connecting portion provided at an end thereof with an anti-twist block and a sealing portion connected to the connecting portion, a receiving assembly is detachably connected to an end of the connecting portion, the receiving assembly comprising a fastener threadedly connected to the connecting portion of the closing element and an anti-twist fitting fitted around an outer periphery of the anti-twist block;

16. The compressed air adapter according to any one of claims 1 to 12, wherein the adjustment element comprises a grip portion and a rotation portion connected to the grip portion, the rotation portion being in threaded connection with the base body, the grip portion being abuttable against an end surface of the base body.

17. Dosing system, characterized in that it comprises a container, a connector, a compressed air adapter according to any one of claims 1 to 14, said compressed air adapter and said connector being connected to the two ends of said container, respectively.

18. A method of feeding using the dosing system of claim 17, comprising the steps of:

connecting the container with the joint;

injecting a fluid to be supplied into the container;

snap fitting the base to the container;

connecting the airflow channel with an external air source by using a hose;