CN219345558U - Polyethylene valve with small opening and closing torque - Google Patents
Polyethylene valve with small opening and closing torque Download PDFInfo
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- CN219345558U CN219345558U CN202320313903.XU CN202320313903U CN219345558U CN 219345558 U CN219345558 U CN 219345558U CN 202320313903 U CN202320313903 U CN 202320313903U CN 219345558 U CN219345558 U CN 219345558U
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- sealing ring
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Abstract
The utility model discloses a polyethylene valve with small opening and closing torque, which relates to the technical field of valves and comprises a valve body, connecting pipes, a valve ball and a valve rod, wherein two ends of the valve body are respectively connected with the connecting pipes in a butt joint mode, one end of each connecting pipe is an inner connecting end, the other end of each connecting pipe is an outer connecting end, the front end of each inner connecting end is provided with a welding part and a sealing ring positioning part, the front end of each welding part is in butt joint with one end port of the valve body, the front end of each sealing ring positioning part is circumferentially provided with an annular V-shaped groove, a sealing ring is positioned on each annular V-shaped groove, and a sealing ring bracket is arranged on the outer side of each sealing ring positioning part in a ring mode; the section of the sealing ring is elliptical, the whole sealing ring is wedge-shaped with a large opening at one end and a small opening at one end, the large opening end of the sealing ring is propped against the annular V-shaped groove at the front end of the positioning part of the sealing ring, and the small opening end of the sealing ring is propped against the outer wall of the valve ball and is sealed with the outer wall of the valve ball in an extrusion mode. The utility model provides a polyethylene valve with small opening and closing torque and a sealing ring not easy to separate.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a polyethylene valve with small opening and closing torque.
Background
The polyethylene valve has good physical properties, has the advantages of corrosion resistance, long service life, convenient installation, low price and the like, and has become an indispensable pipeline control element in a gas pipe network.
The sealing structure of the interior of the polyethylene valve is mainly described in patent publication No. CN 205715759U, and the patent name is a polyethylene PE plastic ball valve. The sealing ring is in surface contact sealing with the valve ball, the contact area between the sealing ring and the valve ball is large, the generated adsorption force is large, the valve ball is not opened or closed for a long time, the valve torque is large, and even the valve cannot be opened or closed. Moreover, the sealing ring is usually only clamped in one end of the connecting pipe, and no specific sealing ring locking and anti-disengaging structure exists.
Disclosure of Invention
The utility model provides a polyethylene valve with small opening and closing torque and a sealing ring which is not easy to separate.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the polyethylene valve with small opening and closing torque comprises a valve body, a connecting pipe, a valve ball and a valve rod, wherein a fluid channel transversely penetrates through the valve body, a valve rod positioning hole penetrating through the fluid channel is formed in the top of the valve body, the valve ball is arranged in the fluid channel of the valve body, the valve rod is positioned on the valve rod positioning hole, the lower end of the valve rod is connected with the valve ball, the two ends of the valve body are respectively butted with the connecting pipe,
one end of each connecting pipe is an inner connecting end, the other end of each connecting pipe is an outer connecting end, the front end of each inner connecting end is provided with a welding part and a sealing ring positioning part, the welding part and the sealing ring positioning part are both in annular boss shapes and are coaxially arranged, and the welding part is positioned outside the sealing ring positioning part;
the front end of the welding part is in butt joint with one end port of the valve body,
the front end of the sealing ring positioning part is circumferentially provided with an annular V-shaped groove, a sealing ring is positioned on the annular V-shaped groove, and a sealing ring bracket is arranged on the outer side of the sealing ring positioning part in a surrounding manner;
the section of the sealing ring is elliptical, the whole sealing ring is wedge-shaped with a large opening at one end and a small opening at one end, an annular bulge is arranged on the outer side wall of the sealing ring along the circumferential direction, the large opening end of the sealing ring is abutted against the annular V-shaped groove at the front end of the positioning part of the sealing ring, and the small opening end of the sealing ring is abutted against the outer wall of the valve ball and is sealed with the outer wall of the valve ball in an extrusion manner;
the sealing ring support is annular, one end of the sealing ring support is a support positioning part, the other end of the sealing ring support is a sealing ring limiting part, the support positioning part is sleeved on the outer side of the sealing ring positioning part and is fixed relative to the sealing ring positioning part, an annular flange is arranged on the inner side of the sealing ring limiting part, an annular inclined plane is arranged on one side of the annular flange, which is close to the support positioning part, the inclination direction of the annular inclined plane is consistent with that of the outer side surface of the sealing ring, an annular flange matched with an annular bulge on the sealing ring is arranged on the annular inclined plane along the circumferential direction, and one side of the annular flange is propped against one side, which is far away from the annular V-shaped groove, of the annular bulge.
Preferably, the support positioning part and the sealing ring positioning part of the sealing ring support are relatively fixed through a thread structure, the outer wall of the sealing ring positioning part is provided with external threads, and the inner wall of the support positioning part is provided with internal threads matched with the external threads on the sealing ring positioning part.
Preferably, a support stopping part is arranged at the periphery of the sealing ring limiting part of the sealing ring support, and a blocking part which is abutted against the front end of the support stopping part is arranged on the inner wall of the fluid channel of the valve body.
Preferably, a valve rod cap is arranged on a valve rod positioned outside the valve body.
Therefore, the utility model has the following beneficial effects: 1. the sealing ring adopts a flat sealing ring with an oval cross section, and the arc-shaped surface of the sealing ring and the surface of the valve ball form an annular closed line for sealing, so that the contact area is reduced, and the opening and closing torque is further reduced; 2. the locking anti-disengaging structure is arranged between the sealing ring support and the sealing ring, so that the sealing ring cannot be disengaged or position offset in the use process.
Drawings
Fig. 1 is a cross-sectional view of the present utility model.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a cross-sectional view of a nipple in accordance with the present utility model.
Fig. 4 is a cross-sectional view of a seal ring in accordance with the present utility model.
Fig. 5 is an enlarged view at b in fig. 4.
Fig. 6 is a cross-sectional view of a seal ring holder in accordance with the present utility model.
Fig. 7 is an enlarged view at c in fig. 6.
1: a valve body; 101: a fluid channel; 102: a blocking portion; 2: connecting pipe; 201: an inner joint end; 202: an external connection end; 203: a welding part; 204: a seal ring positioning part; 205: an annular V-groove; 3: a valve ball; 4: a valve stem; 5: a seal ring; 501: an annular protrusion; 6: a seal ring bracket; 601: a bracket positioning part; 602: a seal ring limit part; 603: an annular flange; 604: an annular inclined plane; 605: an annular flange; 606: a bracket retaining part; 7: a valve stem cap.
Description of the embodiments
The utility model is further described below with reference to the drawings and the detailed description.
Examples
Referring to fig. 1 to 7, the polyethylene valve with small opening and closing torque comprises a valve body 1, a connecting pipe 2, a valve ball 3 and a valve rod 4, wherein a fluid channel 101 is transversely arranged in the valve body 1 in a penetrating manner, a valve rod positioning hole penetrating through the fluid channel 101 is formed in the top of the valve body 1, the valve ball 3 is arranged in the fluid channel 101 of the valve body 1, the valve rod 4 is positioned on the valve rod positioning hole, the lower end of the valve rod 4 is connected with the valve ball 3, and two ends of the valve body 1 are respectively abutted with the connecting pipe 2.
One end of each connecting pipe 2 is an inner connecting end 201, the other end is an outer connecting end 202, a welding part 203 and a sealing ring positioning part 204 are arranged at the front end of the inner connecting end 201, the welding part 203 and the sealing ring positioning part 204 are both in annular boss shapes and are coaxially arranged, and the welding part 203 is positioned outside the sealing ring positioning part 204, as shown in fig. 3.
The front end of the welding part 203 is butted with one end port of the valve body 1.
The front end circumference of sealing washer location portion 204 is equipped with an annular V type groove 205, be located a sealing washer 5 on the annular V type groove 205, the outside of sealing washer location portion 204 is equipped with a sealing washer support 6 in the ring.
The section of the sealing ring 5 is elliptical, the whole sealing ring 5 is wedge-shaped with a large opening at one end and a small opening at one end, an annular bulge 501 is arranged on the outer side wall of the sealing ring 5 along the circumferential direction, as shown in fig. 4 and 5, the large opening end of the sealing ring 5 is propped against in an annular V-shaped groove 205 at the front end of the sealing ring positioning part 204, and the small opening end of the sealing ring 5 is propped against the outer wall of the valve ball 3 and is sealed with the outer wall of the valve ball 3 in an extrusion mode.
The sealing ring support 6 is annular, one end of the sealing ring support 6 is a support positioning portion 601, the other end of the sealing ring support 6 is a sealing ring limiting portion 602, as shown in fig. 6 and 7, the support positioning portion 601 is sleeved on the outer side of the sealing ring positioning portion 204 and is fixed relatively with the sealing ring positioning portion 204 through a threaded structure, an external thread is arranged on the outer wall of the sealing ring positioning portion 204, and an internal thread matched with the external thread on the sealing ring positioning portion 204 is arranged on the inner wall of the support positioning portion 601. An annular flange 603 is arranged on the inner side of the sealing ring limiting part 602, an annular inclined plane 604 is arranged on one side, close to the support positioning part 601, of the annular flange 603, the inclined direction of the annular inclined plane 604 is consistent with that of the outer side face of the sealing ring 5, an annular flange 605 matched with the annular bulge 501 on the sealing ring 5 is circumferentially arranged on the annular inclined plane 604, and one side of the annular flange 605 abuts against one side, far away from the annular V-shaped groove 205, of the annular bulge 501.
A valve rod cap 7 is arranged on the valve rod 4 positioned outside the valve body 1.
According to the utility model, the flat sealing ring with the oval cross section is adopted, so that the surface contact sealing between the conventional sealing ring and the valve ball is adjusted to be the line contact sealing, the contact area between the sealing ring and the valve ball is reduced, the opening and closing torque is further reduced, and the problems that the valve ball is not opened and closed for a long time, the torque is larger or the valve cannot be opened and closed are avoided.
Meanwhile, a locking anti-disengaging structure is arranged between the sealing ring support and the sealing ring. The sealing ring is designed into a wedge shape with a large opening at one end and a small opening at one end, the annular bulge is arranged on the outer side wall of the sealing ring along the circumferential direction, and the annular flange matched with the annular bulge on the sealing ring is arranged on the inner side of the sealing ring support, so that the sealing ring cannot be separated or position offset in the use process, and the sealing stability of the valve is further ensured.
Examples
The distinguishing technical features of the present embodiment and the first embodiment are that the bracket positioning portion 601 and the seal ring positioning portion 204 are not fixed relatively by a screw structure, but are: the periphery of the seal ring limiting part 602 of the seal ring bracket 6 is provided with a bracket retaining part 606, and the inner wall of the fluid channel 101 of the valve body 1 is provided with a blocking part 102 which abuts against the front end of the bracket retaining part 606.
Claims (4)
1. The utility model provides a little polyethylene valve of moment of torsion opens and close, includes valve body (1), takeover (2), valve ball (3) and valve rod (4), transversely run through in valve body (1) and be equipped with fluid channel (101), valve body (1) top is equipped with the valve rod locating hole that runs through to fluid channel (101), in fluid channel (101) of valve body (1) are located in valve ball (3), valve rod (4) location is on valve rod locating hole and valve rod (4) lower extreme is connected with valve ball (3), and valve body (1) both ends respectively butt joint has takeover (2), its characterized in that:
one end of each connecting pipe (2) is an inner connecting end (201), the other end is an outer connecting end (202), a welding part (203) and a sealing ring positioning part (204) are arranged at the front end of the inner connecting end (201), the welding part (203) and the sealing ring positioning part (204) are both in annular boss shapes and are coaxially arranged, and the welding part (203) is positioned at the outer side of the sealing ring positioning part (204);
the front end of the welding part (203) is in butt joint with one end port of the valve body (1),
an annular V-shaped groove (205) is circumferentially arranged at the front end of the sealing ring positioning part (204), a sealing ring (5) is positioned on the annular V-shaped groove (205), and a sealing ring bracket (6) is annularly arranged at the outer side of the sealing ring positioning part (204);
the section of the sealing ring (5) is elliptical, the whole sealing ring (5) is wedge-shaped with a large opening at one end and a small opening at one end, an annular bulge (501) is arranged on the outer side wall of the sealing ring (5) along the circumferential direction, the large opening end of the sealing ring (5) is abutted against the inside of an annular V-shaped groove (205) at the front end of a sealing ring positioning part (204), and the small opening end of the sealing ring (5) is abutted against the outer wall of the valve ball (3) and is sealed with the outer wall of the valve ball (3) in an extrusion manner;
the sealing ring support (6) is annular, one end of the sealing ring support (6) is a support positioning portion (601), the other end of the sealing ring support is a sealing ring limiting portion (602), the support positioning portion (601) is sleeved on the outer side of the sealing ring positioning portion (204) and is fixed relative to the sealing ring positioning portion (204), an annular flange (603) is arranged on the inner side of the sealing ring limiting portion (602), an annular inclined surface (604) is arranged on one side, close to the support positioning portion (601), of the annular flange (603), the inclination direction of the annular inclined surface (604) is consistent with that of the outer side surface of the sealing ring (5), an annular flange (605) matched with an annular bulge (501) on the sealing ring (5) is arranged on the annular inclined surface (604) along the circumferential direction, and one side of the annular flange (605) abuts against one side, far away from the annular V-shaped groove (205), of the annular bulge (501).
2. A low on-off torque polyethylene valve according to claim 1, wherein: the sealing ring support is characterized in that a support positioning part (601) of the sealing ring support (6) and a sealing ring positioning part (204) are relatively fixed through a thread structure, an external thread is arranged on the outer wall of the sealing ring positioning part (204), and an internal thread matched with the external thread on the sealing ring positioning part (204) is arranged on the inner wall of the support positioning part (601).
3. A low on-off torque polyethylene valve according to claim 1, wherein: the sealing ring limiting part (602) of the sealing ring support (6) is provided with a support stopping part (606) at the periphery, and the inner wall of the fluid channel (101) of the valve body (1) is provided with a blocking part (102) which is abutted against the front end of the support stopping part (606).
4. A low on-off torque polyethylene valve according to claim 1, 2 or 3, wherein: a valve rod cap (7) is arranged on the valve rod (4) positioned at the outer side of the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320313903.XU CN219345558U (en) | 2023-02-13 | 2023-02-13 | Polyethylene valve with small opening and closing torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320313903.XU CN219345558U (en) | 2023-02-13 | 2023-02-13 | Polyethylene valve with small opening and closing torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219345558U true CN219345558U (en) | 2023-07-14 |
Family
ID=87100062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320313903.XU Active CN219345558U (en) | 2023-02-13 | 2023-02-13 | Polyethylene valve with small opening and closing torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219345558U (en) |
-
2023
- 2023-02-13 CN CN202320313903.XU patent/CN219345558U/en active Active
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