CN216824344U - Anti-backflow valve for high-pressure syringe connecting pipe - Google Patents
Anti-backflow valve for high-pressure syringe connecting pipe Download PDFInfo
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- CN216824344U CN216824344U CN202123057541.2U CN202123057541U CN216824344U CN 216824344 U CN216824344 U CN 216824344U CN 202123057541 U CN202123057541 U CN 202123057541U CN 216824344 U CN216824344 U CN 216824344U
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Abstract
The utility model discloses an anti-reflux valve for a high-pressure syringe connecting pipe, which comprises a valve body, an input connector and an output connector, wherein the input connector and the output connector are respectively connected with the upper end and the lower end of the valve body; the inside top of valve body is fixed with annular boss, and the interval has annular slide between the annular boss outside and the valve body is inside, and the inside sliding connection of annular slide has annular piston, and annular piston lower extreme is the annular and evenly is fixed with three piece at least connecting rods, and annular boss bottom is equipped with the shutoff ball. Has the advantages that: when liquid is input into the annular boss from the input connector, the liquid can push the blocking ball open, the blocking ball drives the annular piston to slide downwards through the connecting rod, the piston can be pulled by the annular piston at the moment, the piston drives the baffle to extrude the spring by utilizing the piston rod, when the high-pressure injector is stopped to use, the baffle is ejected by the spring to move, the baffle drives the piston to move, the piston can pull the annular piston to slide upwards, the blocking ball is blocked at the bottom of the annular boss again, and the backflow preventing effect is achieved.
Description
Technical Field
The utility model relates to a high pressure syringe technical field especially relates to a high pressure syringe connecting tube is with preventing backward flow valve.
Background
The high-pressure injector is used as an auxiliary device in a radiology diagnosis and treatment system, is gradually applied clinically along with the technical development of X-rays, a rapid film changer, an image intensifier, an artificial contrast agent and the like, and for a patient needing to be injected with the contrast agent, the high-pressure injector needs to be connected with an indwelling needle on the hand of the patient through a connecting pipe. The existing high-pressure syringe connecting pipe is lack of a backflow prevention structure in the using process, so that the liquid in the connecting pipe easily flows back.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a high pressure syringe is anti-reflux valve for connecting pipe to solve the problem that proposes among the above-mentioned background art.
An anti-backflow valve for a high-pressure syringe connecting pipe comprises a valve body, an input connector and an output connector, wherein the input connector and the output connector are respectively connected to the upper end and the lower end of the valve body;
the inside top of valve body is fixed with annular boss, the interval has annular slide between annular boss outside and the valve body is inside, the inside sliding connection of annular slide has annular piston, the annular piston lower extreme is the annular and evenly is fixed with three piece at least connecting rods, annular boss bottom is equipped with the shutoff ball, connecting rod end and shutoff ball fixed surface, both ends upside all runs through and is fixed with the piston pipe about the valve body, the inside sliding connection of piston pipe has the piston, the piston outer end is fixed with the piston rod, the piston rod end extends the piston pipe and can dismantle and be connected with the baffle, just be located the piston rod outside between baffle inner and the piston pipe outer end and be equipped with the spring.
Preferably, the upper end and the lower end of the valve body are respectively provided with an input port and an output port, the input port corresponds to and is communicated with the input connector, the output port corresponds to and is communicated with the output connector, and the annular boss is positioned outside the input port.
Preferably, the bottom end inside the valve body and the left side and the right side of the output port are both fixed with a convex block.
Preferably, the diameter of the blocking ball is larger than the inner diameter of the annular boss.
Preferably, the outer wall of the tail end of the piston rod is provided with threads, an internal thread ring is fixed at the inner end of the baffle, and the tail end of the piston rod is located inside the internal thread ring and is in threaded connection with the internal thread ring.
Preferably, the internal thread ring is positioned on the inner side of the spring, and two ends of the spring are respectively attached to the baffle plate and the piston tube.
Preferably, the outer wall of the annular piston slides on the inner wall of the valve body, the inner wall of the annular piston slides on the outer wall of the annular boss, and the piston pipe is communicated with the annular slide way and is positioned above the annular piston.
Has the beneficial effects that: when liquid is input into the annular boss from the input connector, the liquid can push the blocking ball away, the blocking ball drives the annular piston to slide downwards through the connecting rod, the piston can be pulled by the annular piston at the moment, the piston drives the baffle to extrude the spring by utilizing the piston rod, and when the high-pressure injector is stopped to be used, the baffle is ejected by the spring to move, the baffle drives the piston to move, so that the piston can pull the annular piston to slide upwards, the blocking ball is blocked at the bottom of the annular boss again, and the backflow preventing effect is achieved.
Drawings
FIG. 1 is a schematic view of the whole front view of the present invention;
FIG. 2 is a schematic sectional view of the whole front view of the present invention;
fig. 3 is a schematic diagram of the blocking ball of fig. 2 moving down.
In the figure: 1-valve body, 2-input connector, 3-output connector, 4-piston tube, 5-baffle, 6-spring, 7-internal thread ring, 8-piston rod, 9-piston, 10-annular boss, 11-annular piston, 12-connecting rod, 13-blocking ball, 14-lug, 15-input port and 16-output port.
Detailed Description
As shown in fig. 1-3, an anti-reflux valve for a high-pressure syringe connecting tube comprises a valve body 1, and an input connector 2 and an output connector 3 respectively connected to the upper end and the lower end of the valve body, wherein the input connector 2 and the output connector 3 are respectively used for connecting an output connecting tube and an input connecting tube of the high-pressure syringe, and the output connecting tube is communicated with the input connecting tube through the valve body 1;
the top end in the valve body 1 is fixed with an annular boss 10, the upper end and the lower end of the valve body 1 are respectively provided with an input port 15 and an output port 16, the input port 15 corresponds to and is communicated with the input connector 2, the output port 16 corresponds to and is communicated with the output connector 3, the annular boss 10 is positioned outside the input port 15, when the high-pressure injector is used, the output connector outputs liquid, and the liquid can be input into the inner side of the annular boss 10 of the valve body 1 along the input connector 2 and the input port 15;
an annular slide way is arranged between the outside of the annular boss 10 and the inside of the valve body 1 at an interval, an annular piston 11 is connected in the annular slide way in a sliding manner, at least three connecting rods 12 are uniformly fixed at the lower end of the annular piston 11 in an annular shape, a blocking ball 13 is arranged at the bottom of the annular boss 10, the tail end of each connecting rod 12 is fixed on the surface of the corresponding blocking ball 13, the diameter of each blocking ball 13 is larger than the inner diameter of the annular boss 10, the outer wall of the annular piston 11 slides with the inner wall of the valve body 1, the inner wall of the annular piston 11 slides with the outer wall of the annular boss 10, when liquid is input into the annular boss 10 from the input connector 2, the liquid pushes away the blocking ball 13 blocked at the bottom of the annular boss 10, and the blocking ball 13 drives the annular piston 11 to slide downwards through the connecting rods 12;
the bottom end in the valve body 1 and the left and right sides of the output port 16 are both fixed with a bump 14, the blocking ball 13 moves downwards to be in contact with the bump 14, liquid can be input to the input connecting pipe along the output port 16 and the output connector 3, and the bump 14 is arranged to prevent the blocking ball 13 from blocking the output port 16;
the upper sides of the left end and the right end of the valve body 1 are respectively fixedly provided with a piston tube 4 in a penetrating manner, the piston tube 4 is internally connected with a piston 9 in a sliding manner, the outer end of the piston 9 is fixedly provided with a piston rod 8, the tail end of the piston rod 8 extends out of the piston tube 4 and is detachably connected with a baffle 5, a spring 6 is arranged between the inner end of the baffle 5 and the outer end of the piston tube 4 and is positioned outside the piston rod 8, the outer wall of the tail end of the piston rod 8 is provided with a thread, the inner end of the baffle 5 is fixedly provided with an inner thread ring 7, the tail end of the piston rod 8 is positioned inside the inner thread ring 7 and is in threaded connection with the inner thread ring 7, the inner thread ring 7 is positioned inside the spring 6, two ends of the spring 6 are respectively attached to the baffle 5 and the piston tube 4, the piston tube 4 is communicated with an annular slide way and is positioned above the annular piston 11, and the annular piston 11 slides downwards in the annular slide way to enable the annular piston 11 to pump the piston 9, piston 9 can be in the inside slip of piston pipe 4, make piston 9 utilize piston rod 8 to drive baffle 5 extrusion spring 6, spring 6 can be compressed this moment, and when high-pressure syringe stopped using, then bounce baffle 5 through spring 6 and remove and reset, make baffle 5 utilize piston rod 8 to drive piston 9 activity and reset, piston 9 can be pulled annular piston 11 and go up like this, make annular piston 11 utilize connecting rod 12 to drive shutoff ball 13 and move upward and block up in annular boss 10 bottom again, thereby play the effect of anti-reflux.
Claims (7)
1. The utility model provides a high pressure syringe is anti-reflux valve for connecting pipe, includes valve body (1) and connects input connector (2) and output connector (3) at its upper and lower both ends respectively, its characterized in that:
an annular boss (10) is fixed at the top end of the interior of the valve body (1), an annular slide way is arranged between the exterior of the annular boss (10) and the interior of the valve body (1) at an interval, an annular piston (11) is connected inside the annular slide way in a sliding way, at least three connecting rods (12) are uniformly fixed at the lower end of the annular piston (11) in an annular shape, the bottom of the annular boss (10) is provided with a plugging ball (13), the tail end of the connecting rod (12) is fixed with the surface of the plugging ball (13), the upper sides of the left and right ends of the valve body (1) are respectively fixed with a piston tube (4) in a penetrating way, a piston (9) is connected in the piston tube (4) in a sliding way, a piston rod (8) is fixed at the outer end of the piston (9), the tail end of the piston rod (8) extends out of the piston pipe (4) and is detachably connected with a baffle plate (5), and a spring (6) is arranged between the inner end of the baffle (5) and the outer end of the piston tube (4) and positioned outside the piston rod (8).
2. The anti-reflux valve for a high-pressure syringe connecting tube according to claim 1, wherein: input port (15), delivery outlet (16) have been opened respectively at both ends about valve body (1), input port (15) correspond with input connector (2) and communicate with each other, delivery outlet (16) correspond with output connector (3) and communicate with each other, annular boss (10) are located the input port (15) outside.
3. The backflow prevention valve for a high pressure syringe connecting tube as set forth in claim 2, wherein: the bottom end in the valve body (1) and the left side and the right side of the output port (16) are both fixed with a convex block (14).
4. The anti-reflux valve for a high-pressure syringe connecting tube according to claim 1, wherein: the diameter of the blocking ball (13) is larger than the inner diameter of the annular boss (10).
5. The backflow prevention valve for a high pressure syringe connecting tube as set forth in claim 1, wherein: the outer wall of the tail end of the piston rod (8) is provided with threads, an internal thread ring (7) is fixed at the inner end of the baffle plate (5), and the tail end of the piston rod (8) is located inside the internal thread ring (7) and is in threaded connection with the internal thread ring (7).
6. The anti-reflux valve for a high-pressure syringe connecting tube according to claim 5, wherein: the internal thread ring (7) is positioned on the inner side of the spring (6), and two ends of the spring (6) are respectively attached to the baffle plate (5) and the piston pipe (4).
7. The anti-reflux valve for a high-pressure syringe connecting tube according to claim 1, wherein: annular piston (11) outer wall slides with valve body (1) inner wall, annular piston (11) inner wall slides with annular boss (10) outer wall, piston pipe (4) communicate with each other and are located annular piston (11) top with annular slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123057541.2U CN216824344U (en) | 2021-12-07 | 2021-12-07 | Anti-backflow valve for high-pressure syringe connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123057541.2U CN216824344U (en) | 2021-12-07 | 2021-12-07 | Anti-backflow valve for high-pressure syringe connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216824344U true CN216824344U (en) | 2022-06-28 |
Family
ID=82107051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123057541.2U Active CN216824344U (en) | 2021-12-07 | 2021-12-07 | Anti-backflow valve for high-pressure syringe connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216824344U (en) |
-
2021
- 2021-12-07 CN CN202123057541.2U patent/CN216824344U/en active Active
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