CN204664473U - Replaceable scrapper type metal hard sealing ball valve - Google Patents
Replaceable scrapper type metal hard sealing ball valve Download PDFInfo
- Publication number
- CN204664473U CN204664473U CN201520266149.4U CN201520266149U CN204664473U CN 204664473 U CN204664473 U CN 204664473U CN 201520266149 U CN201520266149 U CN 201520266149U CN 204664473 U CN204664473 U CN 204664473U
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- scraper
- ball valve
- valve
- spool
- replaceable
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Abstract
The utility model relates to a kind of replaceable scrapper type metal hard sealing ball valve, comprise valve body, spool, valve seat, planar spring, scraper, valve rod and filler compacting device, described scraper comprises the first scraper being arranged at spool side and the second scraper being symmetricly set in the upper and lower both sides of spool, be arranged at the 3rd scraper of spool opposite side and be symmetricly set in the four blade of the upper and lower both sides of spool, described blade surface is provided with dump tank.Dismountable screw thread and screw mode is adopted to be connected four scrapers and valve seat and valve gap, four scrapers also all can independently be removed, like this when damaging appears in scraper, only the scraper of this damage need be disassembled from ball valve, ressemble again on ball valve after replacing, and without the need to changing whole valve seat or valve gap, thus reduce product repairing cost.
Description
Technical field
The utility model relates to a kind of ball valve, is specifically related to a kind of structure simply, the metal hard-sealing ball valve of scraper Changable type.
Background technique
Along with the development of modern mechanical processing technology and new material, metal hard-sealing ball valve is more and more subject to the favor of people, it is widely used in the industries such as oil, chemical industry, electric power, pharmacy, food, light industry, be applicable to control high temperature or the flowing medium with particle, fiber, be particularly useful for the boiler of power station, metallurgy industry, coal powder injection and fouling, the conveyance conduit freezed.
Metal hard-sealing ball valve is when medium uses containing occasions such as high hardness particle or high flow rate wash away, and the medium in runner can be attached to the surface of metal hard-sealing ball valve spheroid, causes the wearing and tearing of sealing surface of seat and the stuck of valve.In prior art, what adopt is that the method arranging doctor blade device in the sealing surface both sides of valve seat solves the wearing and tearing of sealing surface of seat and the stuck problem of valve, doctor blade device is the some of valve seat, it is spatulate blade face sealing surface of seat structure changed into keen edge, the blade face of such valve seat can scrape away the medium of spherome surface attachment in valve opening and closing process, thus prevent the stuck of valve, ensure sealing surface of seat not by the destruction of attachment.
In prior art, there are the following problems: metal hard-sealing ball valve is after using for a long time, and the scraper at sealing surface of seat place may damage, and in order to the normal work of ball valve, often need to change whole valve seat or valve gap, the maintenance cost of such valve is higher.
Summary of the invention
For solving the problems of the technologies described above, the utility model comprises valve body, spool, valve seat, planar spring, scraper, valve rod and filler compacting device, described scraper comprises the first scraper of being arranged at spool side and is symmetricly set on spool, second scraper of lower both sides, be arranged at the 3rd scraper of spool opposite side and be symmetricly set on spool, the four blade of lower both sides, described first scraper is threaded connection and covers in ball valve, the diameter of described second scraper is greater than the first scraper, and be connected to ball valve by the first screw to cover, described 3rd scraper is threaded connection and covers in ball valve, described four blade diameter is greater than the 3rd scraper, and be connected to ball valve by the second screw to cover, described blade surface is provided with dump tank.
After have employed said structure, by arranging in metal hard-sealing ball valve independently four scraper, realizing the medium object scraping away spherome surface attachment in valve opening and closing process, thus preventing valve stuck, ensure sealing surface by the destruction of attachment.And, when damaging appears in scraper, only scraper need be disassembled from ball valve, ressemble again on ball valve after replacing, and without the need to changing whole valve seat or valve gap, thus reduce the maintenance cost of ball valve and the dump tank medium be attached to after scraper can being scraped on cutter flows in dump tank, and which not only adds the working life of scraper, and also more convenient when cleaning scraper.
As further improvement of the utility model, described seal groove is through blade surface and along the recessed downwards rectangular recess of blade surface, described rectangular recess sidewall is provided with drainage trough.
After have employed said structure, the setting party of seal groove and drainage trough to MEDIA FLOW to guiding.
As further improvement of the utility model, described ball valve body and valve gap are provided with sealing surface, and described sealing surface adopts metallic shim sealing, and connects with bolt.
After have employed said structure, metallic shim sealing ensure that the sealing of valve body and valve gap.
Accompanying drawing explanation
figure 1 shows that the general assembly schematic diagram of sealing ball valve;
figure 2 shows that the vibrational power flow schematic diagram of scraper;
figure 3 shows that dump tank structural representation.
Embodiment
As shown in Fig. 1 Fig. 2, this ball valve specifically comprises valve body (1), valve seat (2), planar spring (3), the 3rd scraper (4), four blade (5), screw (6), handle (7), spheroid (8), valve rod (9), support (10), position-limit mechanism (11), coupling band (12), filler compacting device (13), filler (14), spiral wound gasket (15), the first scraper (16), the second scraper (17), middle flange nut (18), middle flange bolt (19), valve gap (20), sealing surface (21).There is spiral wound gasket (15) to seal between valve body (1) and valve gap (20), and be connected with middle flange nut (18) by middle flange bolt (19).The part that the through hole inherence of valve gap (20) is close to spheroid (8) has internal thread, and described internal thread is used for connection first scraper (16).The part that through-hole inner surface is being close to spheroid (8) of valve seat (2) has internal thread, and described internal thread is used for connection the 3rd scraper (4); And the bottom of valve seat (2) has planar spring (3) to carry out pretension valve seat.Valve gap (20) is provided with sealing surface (11), realizes the compact siro spinning technology of spheroid (8) and valve gap (20), form the effective sealing of valve.Valve rod (9), perpendicular to spheroid (8) through-bore axis, is connected with the flat square groove of spheroid (8) by stem lower portion, and valve rod top is same with coupling band (12) to be connected by flat square groove; When handle rotates coupling band, spheroid is driven to rotate, to realize the opening and closing operation of valve.
As shown in Figure 2, the first scraper (16), the second scraper (17), the 3rd scraper (4), four blade (5) all contact with spherome surface, and (16) are provided with screw thread with the first scraper, are threaded connection on valve gap (20); Second scraper (17) diameter is greater than described first scraper (16), is connected by screw on valve gap (20) opposite position; , the 3rd scraper (4) is provided with screw thread, is threaded connection on ball seat (2); Four blade (5) diameter is greater than described 3rd scraper (4), is connected by screw on ball seat opposite position.Wherein the first scraper (16), the second scraper (17), the 3rd scraper (4), four blade (5) are alloy-steel sheet, the position that four scrapers contact with spheroid (8) all through pairing grinding, thus four scrapers can with spheroid (8) intimate surface contact.
As shown in Figure 3, described dump tank (23) is through blade surface and along the recessed downwards rectangular recess (24) of blade surface, described rectangular recess sidewall is provided with drainage trough (25).
In ball valve unlatching or closing process, spheroid rotates around the axis perpendicular to passage, while spheroid rotates, four scrapers produce dynamic scrubbing motion mutually with spherome surface, with four of spheroid close contact, scraper can be scraped medium accompanying by spherome surface, avoiding problems attachment medium to the destruction of sealing surface of seat, also can prevent the stuck of ball valve.
In replaceable scrapper type metal hard sealing ball valve provided by the utility model, dismountable screw thread and screw mode is adopted to be connected four scrapers and valve seat and valve gap, four scrapers also all can independently be removed, like this when damaging appears in scraper, only the scraper of this damage need be disassembled from ball valve, ressemble on ball valve again after replacing, and without the need to changing whole valve seat or valve gap, thus reduce product repairing cost.
Claims (4)
1. replaceable scrapper type metal hard sealing ball valve, comprise valve body, spool, valve seat, planar spring, scraper, valve rod and filler compacting device, it is characterized in that: described scraper comprises the first scraper of being arranged at spool side and is symmetricly set on spool, second scraper of lower both sides, be arranged at the 3rd scraper of spool opposite side and be symmetricly set on spool, the four blade of lower both sides, described first scraper is threaded connection and covers in ball valve, the diameter of described second scraper is greater than the first scraper, and be connected to ball valve by the first screw to cover, described 3rd scraper is threaded connection and covers in ball valve, described four blade diameter is greater than the 3rd scraper, and be connected to ball valve by the second screw to cover, described blade surface is provided with dump tank.
2. replaceable scrapper type metal hard sealing ball valve according to claim 1, is characterized in that: described dump tank is through blade surface and along the recessed downwards rectangular recess of blade surface, described rectangular recess sidewall is provided with drainage trough.
3. replaceable scrapper type metal hard sealing ball valve according to claim 1, is characterized in that: the material of described scraper is alloy-steel sheet.
4. replaceable scrapper type metal hard sealing ball valve according to claim 1, is characterized in that: described ball valve body and valve gap are provided with sealing surface, and described sealing surface adopts metallic shim sealing, and connects with bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266149.4U CN204664473U (en) | 2015-04-28 | 2015-04-28 | Replaceable scrapper type metal hard sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266149.4U CN204664473U (en) | 2015-04-28 | 2015-04-28 | Replaceable scrapper type metal hard sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204664473U true CN204664473U (en) | 2015-09-23 |
Family
ID=54134856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520266149.4U Expired - Fee Related CN204664473U (en) | 2015-04-28 | 2015-04-28 | Replaceable scrapper type metal hard sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204664473U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812964A (en) * | 2017-04-07 | 2017-06-09 | 李祥庆 | A kind of band scraper stop valve assembly method |
| CN112610717A (en) * | 2021-02-01 | 2021-04-06 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-layer sealing discharging ball valve with double scrapers |
-
2015
- 2015-04-28 CN CN201520266149.4U patent/CN204664473U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812964A (en) * | 2017-04-07 | 2017-06-09 | 李祥庆 | A kind of band scraper stop valve assembly method |
| CN112610717A (en) * | 2021-02-01 | 2021-04-06 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-layer sealing discharging ball valve with double scrapers |
| CN112610717B (en) * | 2021-02-01 | 2024-05-24 | 温州青鸟自控阀门有限公司 | Automatic decoking multi-level sealing unloading ball valve with double scrapers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20210428 |