TWM502126U - Pocket type fluid delivery device - Google Patents

Description

Pocket fluid delivery device

The present invention relates to fluid delivery devices, and more particularly to a bladder fluid delivery device.

A delivery device as disclosed in US Pat. No. 4,354,515 includes two hoses, one hose being threaded through a bladder structure to deliver fluid to a fluid tube, and the other hose for injecting fluid into the bladder structure for expansion. The two hoses are respectively provided with a valve body to control the fluid supply source to communicate with or not communicate with the two hoses.

However, when such a device is connected or disconnected from the supply source, the two valve bodies need to be separately adjusted, which is very inconvenient; and the device is provided with two hoses, when checking complicated pipelines, The device will appear to take up more space.

The main purpose of the present invention is to provide a bladder-type fluid delivery device having a single tube member and an adjustment member inserted into the inflatable bladder structure, and the fluid can be controlled to flow into the expansion space or the fluid tube by rotating the adjustment member. Compared with the prior art, it is more convenient and takes up less space.

To achieve the above object, the present invention provides a bladder-type fluid delivery device for delivering a fluid to a fluid tube, comprising: an inflatable bladder structure comprising a first passageway and a second passage; a tubular member disposed in the expandable bladder structure, the tubular member including a first conduit, the first conduit being in communication with an exterior of the expandable bladder structure, the tubular member and the expandable bladder structure Forming an expansion space communicating with the first passage, the first duct is in communication with the second passage; an adjusting member is movably inserted at one end of the expandable bladder structure, and is open in the radial direction hole. Wherein the adjustment member is movable between an expansion position and a delivery position, and controllably communicating the first passage or the second passage with the fluid supply source.

1‧‧‧ Pocket bag fluid delivery device

10‧‧‧Expandable bladder structure

11‧‧‧First Passage

12‧‧‧second channel

13‧‧‧Expansion space

14‧‧‧First Fixed Department

141‧‧‧ First card arrival

21‧‧‧Second Pipeline

210‧‧‧First radial stop

22‧‧‧First Pipeline

23‧‧‧C type buckle

30‧‧‧Adjustment

31‧‧‧through holes

32‧‧‧ card-to-component

142‧‧‧Second card arrival

15‧‧‧Second fixed department

16‧‧‧ pocket

160‧‧‧ Ribs

17‧‧‧ Positioning parts

20‧‧‧ Pipe fittings

33‧‧‧second radial stop

2‧‧‧ fluid tube

3‧‧‧ Fluid supply source

4‧‧‧ check valve

5‧‧‧ check valve

6‧‧‧Drain valve

1 is a perspective view of a preferred embodiment of the present invention.

2 is an exploded view of a preferred embodiment of the present invention.

3 is a cross-sectional view along line B-B of FIG. 1 in accordance with a preferred embodiment of the present invention.

FIG. 3A is a partial enlarged view of FIG. 3 of the creation.

4 is a cross-sectional view along line A-A of FIG. 1 in accordance with a preferred embodiment of the present invention.

4A is a partial enlarged view of the creation of FIG. 4 .

FIG. 5 is an application diagram of a preferred embodiment of the present invention.

Referring to Figures 1, 2, 3, 3A, 4, 4A and 5, there is shown a preferred embodiment of the present invention, the bladder fluid delivery device 1 of the present invention for delivering a fluid to a fluid tube 2. The bladder fluid delivery device 1 includes an inflatable bladder structure 10, a tubular member 20 and an adjustment member 30.

The inflatable bladder structure 10 includes a first passage 11 and a second passage 12.

The tube member 20 is disposed in the inflatable bag structure 10, and the tube member 20 includes a First conduit 22. The first conduit 22 is in communication with the exterior of the inflatable bladder structure 10, and an expansion space 13 is formed between the tubular member 20 and the inflatable bladder structure 10, and the expansion space 13 is in communication with the first passage 11 (Fig. 3A) The first conduit 22 is in communication with the second passage 12 (Fig. 4A).

The adjusting member 30 is movably inserted into one end of the inflatable bag structure 10, and the adjusting member 30 is provided with a constant hole 31 in the radial direction. When the adjusting member 30 is rotated to an expanded position (FIG. 3A), the through hole 31 communicates with the first passage 11 and the fluid supply source 3, and the second passage 12 and the fluid supply source 3 are not in communication; When the adjusting member 30 is rotated to a conveying position (Fig. 4A), the through hole 31 communicates with the second passage 12 and the fluid supply source 3, and the first passage 11 and the fluid supply source 3 are not in communication.

More specifically, the tubular member 20 further includes a second conduit 21 for connection to the fluid supply source 3, the second conduit 21 being spaced from the first conduit 22. When the adjusting member 30 is moved to the expanding position, the through hole 31 communicates with the first passage 11 and the second duct 21, and when the adjusting member 30 moves to the conveying position, the through hole 31 communicates with the second passage 12 and the second conduit 21. Further, the pipe member 20 is integrally formed to form the second pipe 21 and the first pipe 22 which are phase-blocked; the pipe member may also be through, and another barrier is provided to make the second pipe and the first pipe Barrier.

In order to accurately position the adjusting member 30, the adjusting member 30 is provided with a latching component 32 and optionally with a first card abutting portion 141 or a second card abutting portion 142 provided on the inflatable bag structure 10. Engagement allows the adjustment member 30 to be selectively positioned in the expanded position (Fig. 3A) or the delivery position (Fig. 4A).

When the adjusting member 30 is rotated to the expanded position (FIG. 3A), the second duct 21 can introduce a fluid through the through hole 31 and the first passage 11 to enter the expansion space 13, so that The expansion space 13 is enlarged; when the expansion space 13 is to be reduced, only the pressure of the fluid supply source needs to be eliminated, and the fluid in the expansion space 13 can be reversely flowed into the second conduit 21 for discharge, and of course, a A pressure relief valve directly on the inflatable bladder structure allows fluid to flow out of the expansion space. When the adjusting member 30 is rotated to the conveying position, the second pipe 21 can introduce a fluid flowing through the through hole 31, the second passage 12 and the first pipe 22 to flow into the fluid pipe 2.

In the embodiment, the inflatable bladder structure 10 includes a first fixing portion 14 , a second fixing portion 15 and a bladder 16 .

The first fixing portion 14 is disposed at one end of the inflatable bag structure 10 and is disposed on the tube member 20 . The adjusting member 30 is rotatably inserted into the first fixing portion 14 . The first fixing portion 14 includes The first passage 11 and the second passage 12. The adjusting member 30 can selectively communicate with the second duct 21 and the first passage 11, the second duct 21 and the second passage 12 via the through hole 31.

The bladder-type fluid transport device 1 further includes a positioning member 17 for inserting and positioning the first fixing portion 14 and the tubular member 20. The outer surface of the tubular member 20 is provided with a first radial direction facing the second fixing portion 15. The inner surface of the adjusting member 30 is provided with a second radial blocking surface 33 of the first radial blocking surface 210. The first and second radial blocking surfaces are mutually axially blocked. Therefore, the adjustment of the first radial blocking surface 210, the second radial blocking surface 33 and the positioning member 17 can further prevent the adjusting member 30 from moving relative to the first fixing portion 14.

The second fixing portion 15 is disposed at the other end of the inflatable bladder structure 10 and is annularly disposed on the tubular member 20 . One end of the bladder 16 is fixedly disposed on the first fixing portion 14 , and the other end is fixedly disposed on the second fixing portion 15 . The expansion space 13 is formed between the bladder 16 and the tubular member 20 . The outer surface of the bag 16 may be additionally provided with at least one rib 160 to increase the bag 16 The structural strength and the bladder 16 are more concentric with the fluid tube 2.

The outer ring of the tubular member 20 is provided with two C-shaped retaining rings 23, and the second fixing portion 15 is located between the two C-shaped retaining rings 23, and the distance between the two C-shaped retaining rings 23 is equal to the second fixing portion 15. The length in the axial direction, and when the bladder 16 is inflated, the second fixing portion 15 is not displaced by the stretching of the bladder 16. It can be understood that the distance between the two C-shaped buckles 23 can be greater than the length of the second fixing portion 15 in the axial direction, or the outer portion of the tubular member 20 is only provided with a C-shaped buckle to make the inflatable bag. The structure 10 is limited between the C-shaped buckle and the adjusting member 30. When the bladder 16 is inflated, the distance between the first fixing portion 14 and the second fixing portion 15 can be narrowed, thereby increasing the The degree of deformation of the bladder 16 in the radial direction can seal the fluid tube 2 having a large diameter.

The tubular member 20 is provided with at least one check valve between the expandable bladder structure 10 and the fluid supply source 3 such that fluid can only flow from the fluid supply source to the expandable bladder structure 10. In the present embodiment, the tubular member 20 is provided with two check valves, one of which is a nozzle receiving end, and the other check valve 4 is connected to an inflation tool (fluid supply source 3). Further, the tubular member 20 is provided with a drain valve 6 between the expandable bladder structure 10 and the fluid supply source 3 to discharge fluid to contract the expandable bladder structure 10. In all of the above embodiments, the check valve and the drain valve may not be provided, and different fluid supply sources may be connected or not connected to the second pipe 21 at different stages.

Referring to FIG. 3, 3A and 5, in the stage to be inflated, the inflatable bag structure 10 is first placed in the fluid tube 2, and the adjusting member 30 is adjusted to an expansion position, and the inflation tool is used to pump gas. The gas flows through the check valve 4, the second pipe 21, the through hole 31, and the first passage 11 into the expansion space 13 to expand the bag 16 until it is adhered to the fluid. In the tube 2, it is of course also possible to drive the gas from the check valve 5 to expand the bladder 16.

Referring to FIGS. 4 and 4A, in the conveying stage, the adjusting member 30 is adjusted to the conveying position, and a fluid supply source is connected to the nozzle receiving end (the check valve 5). In the embodiment, the fluid is conveyed to be colored. As a representative of the gas, the colored gas may sequentially flow from the fluid supply source through the nozzle receiving end (the check valve 5), the second duct 21, the through hole 31, the second passage 12, and the first duct 22, and further flowing into the fluid tube 2, if the fluid tube 2 has a leak, the colored gas will flow out from the leak of the fluid tube 2; in other embodiments, the fluid can also be transported from the check valve 4. Send in.

After the delivery is completed, the adjustment member 30 is adjusted to the expanded position, and the drain valve 6 is opened to contract the bladder 16 to take the expandable bladder structure 10 out of the fluid tube 2.

In summary, the inventive adjustment member can more conveniently switch the flow direction of the fluid to control the flow of fluid through the inflatable bladder structure or into the expansion space; and the overall device occupies less space.

1‧‧‧ Pocket bag fluid delivery device

10‧‧‧Expandable bladder structure

16‧‧‧ pocket

160‧‧‧ Ribs

20‧‧‧ Pipe fittings

21‧‧‧Second Pipeline

22‧‧‧First Pipeline

30‧‧‧Adjustment

3‧‧‧ Fluid supply source

4‧‧‧ check valve

5‧‧‧ check valve

6‧‧‧Drain valve

Claims (12)

A bladder-type fluid delivery device for delivering a fluid to a fluid tube, comprising: an inflatable bladder structure comprising a first passage and a second passage; a tubular member threaded through the inflatable bladder structure The tube includes a first conduit that communicates with an exterior of the expandable bladder structure, and an expansion space is formed between the tubular member and the expandable bladder structure, the expansion space being in communication with the first passage The first pipe is in communication with the second passage; an adjusting member is movably inserted at one end of the expandable bladder structure, and a constant hole is opened in a radial direction; wherein when the adjusting member is moved to an expanded position The through hole communicates with the first passage and the fluid supply source, the second passage and the fluid supply source are not in communication, and when the adjusting member moves to a conveying position, the through hole communicates with the second passage and the fluid The supply source, the first channel and the fluid supply source are not in communication. The bag-type fluid delivery device of claim 1, wherein the inflatable bag structure comprises: a first fixing portion disposed at one end of the inflatable bag structure and annularly disposed on the tube member, the adjusting member The first fixing portion includes the first passage and the second passage; the second fixing portion is disposed at the other end of the inflatable bladder structure and is ring-shaped The tube member has a bag that is fixedly disposed at the first fixing portion at one end and is fixedly disposed at the second fixing portion at the other end. The expansion space is formed between the bag and the tube member. The bladder fluid transport device of claim 2, further comprising a positioning member for inserting and positioning the first fixing portion and the tubular member. The bag-type fluid conveying device of claim 3, wherein the outer tube surface of the tube member is provided with a first radial blocking surface facing the second fixing portion, and the inner portion of the adjusting member is provided with one surface for the first diameter To the second radial stop of the stop surface, the first and second radial stop faces are mutually displaceable in the axial direction. The bladder fluid delivery device of claim 2, wherein the outer surface of the bladder is further provided with at least one rib. The bladder fluid delivery device of claim 1, wherein a C-shaped buckle is disposed on the outer ring of the tubular member, and the inflatable bladder structure is limited between the C-shaped buckle and the adjusting member. The bladder-type fluid delivery device of claim 2, wherein a second C-shaped buckle is disposed on the outer ring of the tube, and the second fixing portion is located between the two C-shaped buckles. The bladder fluid delivery device of claim 7, wherein the distance of the two C-shaped buckles is greater than the length of the second fastening portion in the axial direction. The bladder-type fluid delivery device of claim 1, wherein the adjustment member is provided with a snap-on component and optionally with a first card abutment or a second card abutment provided on the inflatable bag structure. The phases are engaged such that the adjustment member is selectively positionable in the expanded position or the delivery position. The bladder fluid delivery device of claim 1, wherein the tubular member is provided with at least one check valve between the inflatable bladder structure and the fluid supply source, so that fluid can only flow from the fluid supply source to the Expandable bladder structure. The bladder fluid delivery device of claim 1, wherein the tubular member is provided with a drain valve between the inflatable bladder structure and the fluid supply. The bladder fluid delivery device of any one of claims 1 to 11, wherein the tubular member further includes a second conduit for connection with the fluid supply source, the second conduit being spaced from the first conduit, When the adjusting member moves to the expanded position, the through hole communicates with the first passage and the a second conduit that communicates with the second passage and the second conduit when the adjustment member is moved to the delivery position.