CN210106685U - Check valve - Google Patents
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- CN210106685U CN210106685U CN201920867725.9U CN201920867725U CN210106685U CN 210106685 U CN210106685 U CN 210106685U CN 201920867725 U CN201920867725 U CN 201920867725U CN 210106685 U CN210106685 U CN 210106685U
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- rotating shaft
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- shaft
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Abstract
The utility model discloses a check valve, include: a valve body; the first shaft end of the first rotating shaft is rotatably connected with one side plate of the valve body, and the second shaft end of the first rotating shaft is rotatably connected with the other side plate of the valve body; the second rotating shaft is arranged in the valve body and is parallel to the first rotating shaft, a third shaft end of the second rotating shaft is rotatably connected with one side plate of the valve body, and a fourth shaft end of the second rotating shaft is rotatably connected with the other side plate of the valve body; the first blade and the second blade form a square through hole, and the first square through hole is sleeved on the first rotating shaft; the third blade and the fourth blade form a second square through hole, and the second square through hole is sleeved on the second rotating shaft; the linkage mechanism is arranged on the outer side of the valve body and can drive the rotating shaft to rotate together; and the handle is fixedly connected with the first rotating shaft or the second rotating shaft. The check valve has the advantages of simple structure, low air leakage and good sealing effect.
Description
Technical Field
The utility model relates to a technical field of exhaust pipe air valve, in particular to check valve.
Background
Presently known blast gates are classified into two main categories, circular valves and square valves according to their shapes. The existing square valve has a complex structure and poor sealing effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be applied to check valve of blast gate solves one or more among the above-mentioned prior art problem.
The utility model provides a check valve, include:
a valve body;
the first rotating shaft is arranged in the valve body, a first shaft end of the first rotating shaft is rotatably connected with one side plate of the valve body, and a second shaft end of the first rotating shaft is rotatably connected with the other side plate of the valve body;
the second rotating shaft is arranged in the valve body and is parallel to the first rotating shaft, a third shaft end of the second rotating shaft is rotatably connected with one side plate of the valve body, and a fourth shaft end of the second rotating shaft is rotatably connected with the other side plate of the valve body;
the first blade and the second blade are fixedly connected and form a square through hole, and the first square through hole is sleeved on the first rotating shaft;
the third blade and the fourth blade are fixedly connected and form a second square through hole, and the second square through hole is sleeved on the second rotating shaft;
the linkage mechanism is arranged on the outer side of the valve body and can drive the rotating shaft to rotate together;
and the handle is fixedly connected with the first rotating shaft or the second rotating shaft.
In some embodiments, the linkage mechanism comprises:
the first transmission block is fixedly connected with the end part of the first rotating shaft extending to the outer side of the valve body;
the second transmission block is fixedly connected with the end part of the second rotating shaft extending to the outer side of the valve body;
the connecting rod, connecting rod tip and first transmission piece rotatable coupling, the other end and the second transmission piece rotatable coupling of connecting rod.
In some embodiments, a first stop strip is arranged at the end of the valve body in the extending direction of the first rotating shaft, a second stop strip is arranged at the other end of the valve body in the extending direction of the first rotating shaft in the extending direction of the valve body in the extending direction of.
In some embodiments, a side plate of the valve body is provided with a first shaft sleeve and a first bearing, the first bearing is arranged in the first shaft sleeve, one end of the first rotating shaft is inserted into the first bearing and is in interference fit with the first bearing, a bushing, an anti-friction sleeve and an O-ring are arranged between the first rotating shaft and the first shaft sleeve, the other side plate of the valve body is symmetrically provided with a second shaft sleeve and a second bearing, the second bearing is arranged in the second shaft sleeve, the other end of the first rotating shaft is inserted into the second bearing and is in interference fit with the second bearing, and the bushing, the anti-friction sleeve and the O-ring are arranged between the first rotating shaft and the second;
a side plate of the valve body is provided with a third shaft sleeve and a third bearing, the third bearing is arranged in the third shaft sleeve, one end of a second rotating shaft is inserted into the third bearing and is in interference connection with the third bearing, a bushing, an antifriction sleeve and an O-shaped ring are arranged between the second rotating shaft and the third shaft sleeve, the other side plate of the valve body is symmetrically provided with a fourth shaft sleeve and a fourth bearing, the fourth bearing is arranged in the fourth shaft sleeve, the other end of the second rotating shaft is inserted into the fourth bearing and is in interference connection with the fourth bearing, and the bushing, the antifriction sleeve and the O-shaped ring are arranged between the second rotating shaft and the fourth shaft sleeve.
In some embodiments, the first bearing is a PTFE bearing, the second bearing is a PTFE bearing, the third bearing is a PTFE bearing, and the fourth bearing is a PTFE bearing.
In some embodiments, the first shaft sleeve and the first rotating shaft are sealed by a first framework oil seal, the first framework oil seal is made of fluororubber, the second shaft sleeve and the first rotating shaft are sealed by a second framework oil seal, and the second framework oil seal is made of fluororubber;
the third axle sleeve with seal through the third skeleton oil blanket between the second rotation axis, the third skeleton oil blanket is the fluororubber material, the fourth axle sleeve with seal through the fourth skeleton oil blanket between the second rotation axis, the fourth skeleton oil blanket is the fluororubber material.
In some embodiments, the surface of the first rotating shaft is coated with an anticorrosive paint, and the anticorrosive paint extends from the right end surface of the O-ring at the left end of the first rotating shaft to the left end surface of the O-ring at the right end of the first rotating shaft;
the surface of the second rotating shaft is coated with anticorrosive paint, the anticorrosive paint extends to the right end face of the O-shaped ring at the left end of the second rotating shaft, and the left end face of the O-shaped ring at the right end of the second rotating shaft.
Has the advantages that:
the utility model discloses check valve simple structure leaks the amount of wind low, and is sealed effectual.
Drawings
Fig. 1 is a schematic structural diagram of a check valve according to an embodiment of the present invention;
fig. 2 is a schematic partial structure diagram of a check valve according to an embodiment of the present invention;
fig. 3 is a schematic partial structure diagram of a check valve according to an embodiment of the present invention;
fig. 4 is a schematic partial structure diagram of a check valve according to an embodiment of the present invention;
fig. 5 is a schematic partial structure diagram of a check valve according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
As shown in the figures 1 to 5 of the drawings,
a check valve comprising:
a valve body 100;
a first rotating shaft 200 provided in the valve body 100, a first shaft end of the first rotating shaft 200 being rotatably connected to one side plate of the valve body 100, and a second shaft end of the first rotating shaft 200 being rotatably connected to the other side plate of the valve body 100;
a second rotating shaft 300 which is provided in the valve body 100 and is arranged in parallel with the first rotating shaft 200, a third shaft end of the second rotating shaft 300 is rotatably connected with one side plate of the valve body 100, and a fourth shaft end of the second rotating shaft 300 is rotatably connected with the other side plate of the valve body 100;
the first blade 210 and the second blade 220 are fixedly connected, and the first blade 210 and the second blade 220 form a first square through hole which is sleeved on the first rotating shaft 200;
the third blade 310 and the fourth blade 320 are fixedly connected, the third blade 310 and the fourth blade 320 form a second square through hole, and the second square through hole is sleeved on the second rotating shaft 300;
the linkage mechanism 400 is arranged on the outer side of the valve body 100, and the linkage mechanism 400 can drive the first rotating shaft 200 and the second rotating shaft 300 to rotate together;
the handle 500 is fixedly connected to the first rotary shaft 200 or the second rotary shaft 300.
Wherein, the handle 500 drives the first rotating shaft 200 or the second rotating shaft 300 to rotate, and simultaneously drives the other rotating shaft to rotate through the linkage mechanism 400; the first rotating shaft 200 drives the first blade 210 and the second blade 220, and the second rotating shaft 300 drives the third blade 310 and the fourth blade 320, so as to open or close the air valve.
Wherein, the surfaces of the first blade 210, the second blade 220, the third blade 310 and the fourth blade 320 are all processed by encapsulation.
Further, the link mechanism 400 includes:
a first transmission block 410, wherein the first transmission block 410 is fixedly connected with the end part of the first rotating shaft 200 extending to the outer side of the valve body 100;
a second transmission block 420, wherein the second transmission block 420 is fixedly connected with the end part of the second rotating shaft 300 extending to the outer side of the valve body 100;
and a connecting rod 430, wherein one end of the connecting rod 430 is rotatably connected with the first transmission block 410, and the other end of the connecting rod 430 is rotatably connected with the second transmission block 420.
Further, the end of the valve body 100 extends along the direction of the first rotating shaft 200 to be provided with the first rib 230, the other end of the valve body 100 extends along the direction of the first rotating shaft 200 to be provided with the second rib 330, the end of the first blade 210 is provided with a first folding edge, the end of the second blade 220 is provided with a second folding edge, the first folding edge and the second folding edge are arranged upwards, the end of the third blade 310 is provided with a third folding edge, the end of the fourth blade 320 is provided with a fourth folding edge, the third folding edge and the fourth folding edge are arranged downwards, the second folding edge and the third folding edge are lapped, the first folding edge is lapped with the upper part of the first rib 230, and the fourth folding edge is lapped with the lower part of the second rib 330.
The first rib 230 and the second rib 330 are rubber products. Wherein, the overlap joint of second hem and third hem, first hem overlap joint and the top of first shelves strip 230, the overlap joint of fourth hem and the below of second shelves strip 330 for sealing when closing of blast gate is effectual.
Further, a first shaft sleeve 610 and a first bearing 620 are arranged on one side plate of the valve body 100, the first bearing 620 is arranged in the first shaft sleeve 610, one end of the first rotating shaft 200 is inserted into the first bearing 620 and is in interference connection with the first bearing 620, a bushing 630, an anti-friction sleeve 650 and an O-ring 640 are arranged between the first rotating shaft 200 and the first shaft sleeve 610, a second shaft sleeve and a second bearing are symmetrically arranged on the other side plate of the valve body 100, the second bearing is arranged in the second shaft sleeve, the other end of the first rotating shaft is inserted into the second bearing and is in interference connection with the second bearing, and the bushing, the anti-friction sleeve and the O-ring are arranged between the first rotating shaft and the;
a curb plate of valve body 100 is equipped with third axle sleeve and third bearing, and the third bearing is located in the third axle sleeve, and second rotation axis one end inserts the third bearing and is connected with the interference of third bearing, is equipped with bush, antifriction cover and O type circle between second rotation axis and the third axle sleeve, and the opposite side panel symmetry of valve body is equipped with fourth axle sleeve and fourth bearing, and the fourth bearing is located in the fourth axle sleeve, the other end of second rotation axis insert the fourth bearing and be connected with fourth bearing interference, is equipped with bush, antifriction cover and O type circle between second rotation axis and the fourth axle sleeve.
Further, the first bearing 620 is a PTFE bearing, the second bearing is a PTFE bearing, the third bearing is a PTFE bearing, and the fourth bearing is a PTFE bearing.
By the design, the end part of the first rotating shaft or the second rotating shaft is sealed, so that the whole air leakage amount of the check valve is reduced, and the sealing effect is good.
Further, the first shaft sleeve 610 and the first rotating shaft 200 are sealed through a first framework oil seal, the first framework oil seal is made of fluororubber, and the outer portion of the first framework oil seal is in interference fit with the first shaft sleeve to play a sealing role; the first shaft sleeve and the first rotating shaft are sealed through a second framework oil seal, the second framework oil seal is made of fluororubber, and the outer portion of the second framework oil seal is in interference fit with the second shaft sleeve to play a sealing role;
the third shaft sleeve and the second rotating shaft are sealed through a third framework oil seal, the third framework oil seal is made of fluororubber, and the outer portion of the third framework oil seal is in interference fit with the third shaft sleeve to play a role in sealing; the fourth shaft sleeve and the second rotating shaft are sealed through a fourth framework oil seal, the fourth framework oil seal is made of fluororubber, and the fourth framework oil seal is in interference fit with the fourth shaft sleeve to achieve a sealing effect.
Further, the surface of the first rotating shaft 200 is coated with an anticorrosive paint, and the anticorrosive paint extends from the right end surface of the O-ring at the left end of the first rotating shaft 200 to the left end surface of the O-ring at the right end of the first rotating shaft 200;
the surface of the second rotating shaft is coated with anticorrosive paint, the anticorrosive paint extends to the right end face of the O-shaped ring at the left end of the second rotating shaft, and the left end face of the O-shaped ring at the right end of the second rotating shaft.
When the check valve is applied to exhaust of characteristic gas, an anticorrosive coating needs to be coated, and the anticorrosive coating is a Teflon coating. The O-rings at the two ends of the present embodiment seal with the first rotating shaft 200 coated with teflon, and at the same time, the coaxiality of the first rotating shaft 200 is maintained by the first bearing (PTFE bearing) and the second bearing (PTFE bearing), so as to ensure the complete sealing effect of the shaft ends;
meanwhile, the O-shaped rings at the two ends are sealed with the second rotating shaft coated with the Teflon coating, and the coaxiality of the second rotating shaft is kept through a third bearing (PTFE bearing) and a fourth bearing (PTFE bearing), so that the complete sealing effect of the shaft end is ensured.
The utility model discloses check valve simple structure leaks the amount of wind low, and is sealed effectual.
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 variations and modifications can be made without departing from the inventive concept, and these should also be considered as within the scope of the present invention.
Claims (6)
1. A check valve, comprising:
a valve body (100);
the first rotating shaft (200) is arranged in the valve body (100), a first shaft end of the first rotating shaft (200) is rotatably connected with one side plate of the valve body (100), and a second shaft end of the first rotating shaft (200) is rotatably connected with the other side plate of the valve body (100);
the second rotating shaft (300) is arranged in the valve body (100) and is parallel to the first rotating shaft (200), the third shaft end of the second rotating shaft (300) is rotatably connected with one side plate of the valve body (100), and the fourth shaft end of the second rotating shaft (300) is rotatably connected with the other side plate of the valve body (100);
the blade comprises a first blade (210) and a second blade (220), wherein the first blade (210) and the second blade (220) are fixedly connected, a first square through hole is formed in the first blade (210) and the second blade (220), and the first square through hole is sleeved on the first rotating shaft (200);
the third blade (310) and the fourth blade (320) are fixedly connected, a second square through hole is formed by the third blade (310) and the fourth blade (320), and the second square through hole is sleeved on the second rotating shaft (300);
the linkage mechanism (400) is arranged on the outer side of the valve body (100), and the linkage mechanism (400) can drive the first rotating shaft (200) and the second rotating shaft (300) to rotate together;
and a handle (500) fixedly connected to the first rotating shaft (200) or the second rotating shaft (300).
2. The non-return valve according to claim 1, characterized in that the linkage (400) comprises:
the first transmission block (410) is fixedly connected with the end part of the first rotating shaft (200) extending to the outer side of the valve body (100);
the second transmission block (420) is fixedly connected with the end part of the second rotating shaft (300) extending to the outer side of the valve body (100);
the end of the connecting rod (430) is rotatably connected with the first transmission block (410), and the other end of the connecting rod (430) is rotatably connected with the second transmission block (420).
3. The non-return valve according to claim 1, characterized in that the end of the valve body (100) is provided with a first stop (230) extending along the direction of the first rotation axis (200), the other end of the valve body (100) is provided with a second baffle bar (330) along the arrangement direction of the first rotating shaft (200) in an extending way, the end part of the first blade (210) is provided with a first folding edge, the end part of the second blade (220) is provided with a second folding edge, the first folded edge and the second folded edge are arranged upwards, a third folded edge is arranged at the end part of the third blade (310), the end part of the fourth blade (320) is provided with a fourth folded edge, the third folded edge and the fourth folded edge are arranged downwards, the second folded edge is in lap joint with the third folded edge, the first folded edge is in lap joint with the upper side of the first stop strip (230), and the fourth folded edge is in lap joint with the lower side of the second stop strip (330).
4. The check valve according to claim 1, wherein a first shaft sleeve (610) and a first bearing (620) are provided on one side plate of the valve body (100), the first bearing (620) is provided in the first shaft sleeve (610), one end of the first rotating shaft (200) is inserted into the first bearing (620) and is in interference connection with the first bearing (620), a second shaft sleeve and a second bearing are symmetrically provided on the other side plate of the valve body (100), the second bearing is provided in the second shaft sleeve, and the other end of the first rotating shaft is inserted into the second bearing and is in interference connection with the second bearing;
a side plate of the valve body (100) is provided with a third shaft sleeve and a third bearing, the third bearing is arranged in the third shaft sleeve, one end of a second rotating shaft is inserted into the third bearing and is in interference connection with the third bearing, a fourth shaft sleeve and a fourth bearing are symmetrically arranged on the other side plate of the valve body, the fourth bearing is arranged in the fourth shaft sleeve, and the other end of the second rotating shaft is inserted into the fourth bearing and is in interference connection with the fourth bearing.
5. A non-return valve according to claim 4, characterized in that between the first rotary shaft (200) and the first bushing (610) are arranged a bushing (630), an anti-friction sleeve (650) and an O-ring (640), between which the bushing, the anti-friction sleeve and the O-ring are arranged;
the second rotation axis with be equipped with bush, antifriction cover and O type circle between the third axle sleeve, the second rotation axis with be equipped with bush, antifriction cover and O type circle between the fourth axle sleeve.
6. The check valve of claim 4, wherein the first bearing (620) is a PTFE bearing, the second bearing is a PTFE bearing, the third bearing is a PTFE bearing, and the fourth bearing is a PTFE bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920867725.9U CN210106685U (en) | 2019-06-11 | 2019-06-11 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920867725.9U CN210106685U (en) | 2019-06-11 | 2019-06-11 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210106685U true CN210106685U (en) | 2020-02-21 |
Family
ID=69564567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920867725.9U Active CN210106685U (en) | 2019-06-11 | 2019-06-11 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210106685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483127A (en) * | 2021-07-02 | 2021-10-08 | 江苏瑞雨斯环保科技有限公司 | Composite material special-shaped air pipe check valve for circular gas transmission pipeline |
-
2019
- 2019-06-11 CN CN201920867725.9U patent/CN210106685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483127A (en) * | 2021-07-02 | 2021-10-08 | 江苏瑞雨斯环保科技有限公司 | Composite material special-shaped air pipe check valve for circular gas transmission pipeline |
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