CN212775685U - Hard sealing switch ball valve - Google Patents
Hard sealing switch ball valve Download PDFInfo
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- CN212775685U CN212775685U CN202021229920.8U CN202021229920U CN212775685U CN 212775685 U CN212775685 U CN 212775685U CN 202021229920 U CN202021229920 U CN 202021229920U CN 212775685 U CN212775685 U CN 212775685U
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Abstract
The utility model discloses a hard sealing switch ball valve, which comprises a valve body and a valve rod; the valve comprises a valve body, a valve ball, valve seat sleeves, a support fixing ring, an elastic connecting ring and a first pressure spring, wherein a linear medium flow passage is arranged in the medium flow passage, the medium flow passages on two sides of the valve ball are respectively provided with the valve seat sleeves, each valve seat sleeve comprises a valve seat ring, the support fixing ring, the elastic connecting ring and the first pressure spring, the valve seat rings are adaptive to the medium flow passage, the inner ends of the valve seat rings are adaptive to the spherical surface of the valve ball, the support fixing ring is fixed at the side end of the valve body, the elastic connecting ring is connected between the valve seat rings and the support fixing ring, a ring cavity is formed; the valve body is provided with a guide hole above the valve ball, and the valve rod penetrates into the medium flow passage from the guide hole and is connected with the valve ball to drive the valve ball to rotate so as to open or close the medium flow passage. The utility model discloses a leakproofness is better, and is convenient for change the disk seat.
Description
Technical Field
The utility model relates to a ball valve technical field, concretely relates to hard seal switch ball valve.
Background
Hard seal ball valves are a common ball valve structure, and the material pairing of the ball valve sealing pair (i.e. the valve seat sealing surface and the ball body sealing surface) is metal-to-metal. The existing hard sealing ball valve generally comprises a main valve body and an auxiliary valve body, wherein the main valve body is connected with the auxiliary valve body through a bolt, a valve seat ring is arranged in the main valve body and the auxiliary valve body, a valve ball is matched in the valve seat ring, and the valve seat ring and the spherical surface of the valve ball form sealing through uniform spring load acting on the valve seat ring.
The above prior art has the following disadvantages: (1) the sealing performance between the valve seat and the inner wall of the valve body is poor; (2) when the valve seat and the sealing piece are replaced, the auxiliary valve body needs to be detached, the replacement is troublesome, and the technical requirements on workers are high.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a hard seal switch ball valve to make its leakproofness better, and be convenient for change the disk seat.
The utility model provides a hard seal switch ball valve, include: the valve comprises a valve body, wherein a linear medium flow passage is arranged in the valve body, a valve ball is arranged in the medium flow passage, valve seat kits are arranged in the medium flow passages on two sides of the valve ball, each valve seat kit comprises a valve seat ring, a supporting fixing ring, an elastic connecting ring and a first pressure spring, the valve seat ring is adapted in the medium flow passage, the inner end of the valve seat ring is adapted to the spherical surface of the valve ball, the supporting fixing ring is fixed at the side end of the valve body, the elastic connecting ring is connected between the valve seat ring and the supporting fixing ring, a ring cavity is formed between the elastic connecting ring and the inner wall of the medium flow passage, and the first pressure spring is arranged in the ring cavity and supported between the valve; the valve body is provided with a guide hole above the valve ball, and the valve rod penetrates into the medium flow channel from the guide hole and is connected with the valve ball to drive the valve ball to rotate so as to open or close the medium flow channel.
Further, the inner side of the supporting and fixing ring is provided with an annular plug, and the annular plug is matched in the medium flow channel.
Further, the opposite sides of the valve seat ring and the annular plug are provided with annular guide portions, and two ends of the first pressure spring are sleeved outside the two annular guide portions respectively.
Further, the elastic connection ring is a rubber ring, the two side ends of the rubber ring are both provided with annular connectors, the section of each annular connector is T-shaped and two, opposite ends of the annular guide portion are both provided with annular clamping grooves matched with the annular connectors, and the annular connectors are respectively clamped and fixed in the annular clamping grooves of the corresponding ends at the two ends of the rubber ring.
Furthermore, the side of valve body both sides all is provided with the ring flange, the inboard of ring flange outer end is equipped with annular step, support solid fixed ring and arrange in the annular step.
Further, the supporting and fixing ring is fixed on the valve body through a screw.
Furthermore, the outer side of the supporting and fixing ring is provided with a sinking groove corresponding to each screw, and the end head of each screw is arranged in the sinking groove.
Furthermore, the inner peripheral wall of the guide hole is provided with a packing groove, packing is arranged in the packing groove, and a gland used for fixing the packing in the packing groove is arranged at the upper end of the packing groove.
Further, the downside of gland is equipped with the clamping ring, the clamping ring inserts in the packing groove and supports tight packing, the top of gland is equipped with the cover and is in outside the valve rod, and fixed support in keep off the ring on the valve body, gland and keep off and be provided with the second pressure spring between the ring.
Furthermore, a plurality of screw rods are arranged on the upper side of the valve body around the valve rod, and the upper ends of the screw rods penetrate through the baffle ring and are in threaded connection with nuts.
The beneficial effects of the utility model are embodied in: on one hand, because the elastic connecting ring is arranged between the valve seat ring and the supporting and fixing ring, the first pressure spring is supported between the valve seat ring and the supporting and fixing ring, and the elastic connecting ring has certain elasticity, the first pressure spring can enable the valve seat ring to be tightly abutted against the valve ball so as to ensure the sealing property between the valve seat ring and the valve ball; on the other hand, this application adopts the structure of establishing the disk seat external member in the both sides of establishing valve ball, valve ball in the medium runner of linear type, and the disk seat external member can be directly at the external equipment shaping of valve, when changing the disk seat, detaches the valve body with the solid fixed ring of support of disk seat external member, takes out the disk seat external member wholly again, then with new disk seat external member from the both ends of medium runner insert and fixed can again, the change of disk seat is very convenient, even general workman also can accomplish.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the drawings: 10-a valve body; 11-a media flow channel; 12-a pilot hole; 13-a flange plate; 131-an annular step; 20-a valve ball; 30-a valve seat kit; 31-a valve seat ring; 32-support fixing ring; 321-an annular plug; 322-screw; 323-sink tank; 33-elastic connecting rings; 331-a ring connector; 34-a first compression spring; 35-ring cavity; 36-an annular guide; 361-ring card slot; 40-a valve stem; 50-a packing groove; 51-a filler; 60-pressing the cover; 61-a pressure ring; 62-a baffle ring; 63-a second pressure spring; 64-a screw rod; 65-nut.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1, an embodiment of the present invention provides a hard seal on-off ball valve, which includes a valve body 10 and a valve rod 40.
Be equipped with linear type medium runner 11 in the valve body 10, be equipped with valve ball 20 in the medium runner 11, all be equipped with valve seat external member 30 in the medium runner 11 of valve ball 20 both sides, each valve seat external member 30 all includes valve seat ring 31, support solid fixed ring 32, elastic connecting ring 33 and first pressure spring 34, valve seat ring 31 adaptation is in medium runner 11, and the inner adaptation of valve seat ring 31 is in the sphere of valve ball 20, support solid fixed ring 32 and be fixed in the side of valve body 10, elastic connecting ring 33 connects between valve seat ring 31 and support solid fixed ring 32, form annular chamber 35 between elastic connecting ring 33 and the inner wall of medium runner 11, first pressure spring 34 is arranged in annular chamber 35 and is supported between valve seat ring 31 and support solid fixed ring 32.
The valve body 10 is provided with a guide hole 12 above the valve ball 20, and the valve stem 40 penetrates the medium flow passage 11 from the guide hole 12 and is connected to the valve ball 20 to drive the valve ball 20 to rotate to open or close the medium flow passage 11.
Because the elastic connecting ring 33 is arranged between the valve seat ring 31 and the supporting and fixing ring 32, the first pressure spring 34 is supported between the valve seat ring 31 and the supporting and fixing ring 32, and the elastic connecting ring 33 has certain elasticity, so that the first pressure spring 34 can press the valve seat ring 31 against the valve ball 20 to ensure the sealing property between the valve seat ring 31 and the valve ball 20, during operation, a medium directly flows through the valve seat ring 31, the supporting and fixing ring 32 and the elastic connecting ring 33, and does not flow out of the valve seat ring 31, the supporting and fixing ring 32 and the elastic connecting ring 33, and the influence on the sealing property of the valve caused by leakage between the valve seat ring 31 and the inner wall of the valve body 10 is avoided, therefore, compared with the prior art, the sealing property of the valve is better.
This application adopts the interior structure of establishing valve ball 20 in linear type's medium runner 11, valve ball 20's both sides establish valve seat external member 30, valve seat external member 30 can be directly at the outer equipment shaping of valve body 10, when changing the disk seat, detach valve body 10 with the solid fixed ring 32 of support of valve seat external member 30, take valve seat external member 30 wholly out again, then insert new valve seat external member 30 from the both ends of medium runner 11 and fix can again, the change of disk seat is very convenient, even general workman also can accomplish.
In this embodiment, the inner side of the supporting and fixing ring 32 is provided with the annular plug 321, the annular plug 321 is adapted to the medium flow channel 11, and the stability of the assembly of the supporting and fixing ring 32 and the valve body 10 can be improved by providing the annular plug 321. In order to make the installation of the first compression spring 34 more stable, the opposite sides of the valve seat ring 31 and the annular plug 321 are provided with annular guide portions 36, and both ends of the first compression spring 34 are respectively sleeved outside the two annular guide portions 36.
Preferably, the elastic connecting ring 33 is a rubber ring, the flexible deflection of the rubber ring can satisfy the requirement of assembling the valve seat ring 31, both side ends of the rubber ring are all provided with the annular connectors 331, the section of the annular connectors 331 is in a T shape, the opposite ends of the two annular guide parts 36 are all provided with the annular clamping grooves 361 matched with the annular connectors 331, the annular connectors 331 at both ends of the rubber ring are respectively clamped and fixed in the annular clamping grooves 361 at the corresponding ends, so that the valve seat ring 31, the supporting fixing ring 32 and the elastic connecting ring 33 are assembled to form a whole.
In this embodiment, the flanges 13 are disposed at the two sides of the valve body 10, the inner side of the outer end of the flange 13 is provided with an annular step 131, and the supporting and fixing ring 32 is disposed in the annular step 131 to ensure that the supporting and fixing ring 32 is flush with the outer side surface of the flange 13, so that the flange 13 can be tightly attached to the flange 13 on the pipeline.
The support fixing ring 32 may be fixed to the valve body 10 by screws 322. In order to prevent the head of the screw 322 from protruding out of the outer side of the flange 13, the outer side of the support ring 32 is provided with a sunk groove 323 corresponding to each screw 322, and the end of the screw 322 is placed in the sunk groove 323.
In this embodiment, the inner peripheral wall of the guide hole 12 is provided with a packing groove 50, a packing 51 is arranged in the packing groove 50, the upper end of the packing groove 50 is provided with a gland 60 for fixing the packing 51 in the packing groove 50, and by arranging the packing 51, the sealing performance between the guide hole 12 and the valve rod 40 is improved, so as to prevent the medium leakage.
Preferably, a pressing ring 61 is arranged on the lower side of the pressing cover 60, the pressing ring 61 is inserted into the packing groove 50 and abuts against the packing 51, a retaining ring 62 which is sleeved outside the valve rod 40 and fixedly supported on the valve body 10 is arranged above the pressing cover 60, a second pressure spring 63 is arranged between the pressing cover 60 and the retaining ring 62, and under the action of the second pressure spring 63, the pressing ring 61 presses the packing 51 in the packing groove 50, so that even if the valve rod 40 rotates to wear the packing 51, the packing 51 can be always pressed on the surface of the valve rod 40, and medium leakage caused by the wear of the packing 51 is avoided.
Preferably, the upper side of the valve body 10 is provided with a plurality of lead screws 64 surrounding the valve rod 40, and the upper ends of the lead screws 64 respectively penetrate through the baffle ring 62 and are in threaded connection with nuts 65, so that the elasticity of the pressure spring can be adjusted by adjusting the nuts 65, the pressure between the packing 51 and the valve rod 40 is moderate, good sealing performance is maintained, and the valve rod 40 is not locked.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (10)
1. A hard seal switch ball valve, comprising:
the valve comprises a valve body, wherein a linear medium flow passage is arranged in the valve body, a valve ball is arranged in the medium flow passage, valve seat kits are arranged in the medium flow passages on two sides of the valve ball, each valve seat kit comprises a valve seat ring, a supporting fixing ring, an elastic connecting ring and a first pressure spring, the valve seat ring is adapted in the medium flow passage, the inner end of the valve seat ring is adapted to the spherical surface of the valve ball, the supporting fixing ring is fixed at the side end of the valve body, the elastic connecting ring is connected between the valve seat ring and the supporting fixing ring, a ring cavity is formed between the elastic connecting ring and the inner wall of the medium flow passage, and the first pressure spring is arranged in the ring cavity and supported between the valve;
the valve body is provided with a guide hole above the valve ball, and the valve rod penetrates into the medium flow channel from the guide hole and is connected with the valve ball to drive the valve ball to rotate so as to open or close the medium flow channel.
2. The hard seal on-off ball valve of claim 1, wherein the inside of the support fixing ring is provided with an annular plug which is fitted into the medium flow passage.
3. The hard-seal switch ball valve according to claim 2, wherein the opposite sides of the valve seat ring and the annular plug are provided with annular guide portions, and both ends of the first compression spring are respectively sleeved outside the two annular guide portions.
4. The hard sealing switch ball valve according to claim 3, wherein the elastic connection ring is a rubber ring, two side ends of the rubber ring are provided with annular connectors, the section of each annular connector is T-shaped, opposite ends of the two annular guide portions are provided with annular clamping grooves matched with the annular connectors, and the annular connectors at two ends of the rubber ring are respectively clamped and fixed in the annular clamping grooves at the corresponding ends.
5. The hard seal switch ball valve according to claim 1, wherein flanges are provided at both side ends of the valve body, an annular step is provided at an inner side of an outer end of the flange, and the support fixing ring is disposed in the annular step.
6. The hard seal on-off ball valve of claim 5, wherein the support retainer ring is fixed to the valve body by screws.
7. The hard seal switch ball valve according to claim 6, wherein a sunken groove is formed in the outer side of the support fixing ring corresponding to each screw, and the end of each screw is placed in the sunken groove.
8. The hard seal switch ball valve according to claim 1, wherein the inner peripheral wall of the guide hole is provided with a packing groove, packing is arranged in the packing groove, and a gland for fixing the packing in the packing groove is arranged at the upper end of the packing groove.
9. The hard seal switch ball valve according to claim 8, wherein a press ring is arranged on the lower side of the press cover, the press ring is inserted into the packing groove and tightly abuts against packing, a baffle ring which is sleeved outside the valve rod and fixedly supported on the valve body is arranged above the press cover, and a second pressure spring is arranged between the press cover and the baffle ring.
10. The hard-sealed on-off ball valve according to claim 9, wherein a plurality of lead screws are provided on an upper side of the valve body around the valve stem, and an upper end of each lead screw passes through the retainer ring and is threadedly connected with a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229920.8U CN212775685U (en) | 2020-06-29 | 2020-06-29 | Hard sealing switch ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229920.8U CN212775685U (en) | 2020-06-29 | 2020-06-29 | Hard sealing switch ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775685U true CN212775685U (en) | 2021-03-23 |
Family
ID=75085623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021229920.8U Active CN212775685U (en) | 2020-06-29 | 2020-06-29 | Hard sealing switch ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233888A (en) * | 2021-12-10 | 2022-03-25 | 浙江中控技术股份有限公司 | Ultra-low temperature hard seal track ball valve |
-
2020
- 2020-06-29 CN CN202021229920.8U patent/CN212775685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233888A (en) * | 2021-12-10 | 2022-03-25 | 浙江中控技术股份有限公司 | Ultra-low temperature hard seal track ball valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211116 Address after: 200444 room 419, Block E, 6 / F, 1000 zhenchen Road, Baoshan District, Shanghai Patentee after: Shanghai Moshi Valve Co., Ltd Address before: No. 921, Xinshen Road, Xinhe Town, Chongming District, Shanghai 202150 Patentee before: Shanghai Fanshi automation control equipment Co., Ltd |