CN203548972U - Fixed ball valve - Google Patents
Fixed ball valve Download PDFInfo
- Publication number
- CN203548972U CN203548972U CN201320610439.7U CN201320610439U CN203548972U CN 203548972 U CN203548972 U CN 203548972U CN 201320610439 U CN201320610439 U CN 201320610439U CN 203548972 U CN203548972 U CN 203548972U
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- China
- Prior art keywords
- valve
- sleeve
- valve body
- bearing
- groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a fixed ball valve, which comprises a valve body, a valve cover, a valve element and a valve seat, wherein the valve element is connected with a valve rod; the valve rod is fixedly arranged on the valve body through a gland flange in a rotating way; a sleeve is sleeved on the outer side of the valve rod; a bearing is arranged at the lower end of the sleeve; a groove is formed in the upper part of the valve element; an outer circle of the bearing is in close fit with the sidewall of the groove; a sealing ring is arranged between the outer wall of the sleeve and the sidewall of the groove; the outer wall of the sleeve is in sealing fit with the valve body; at least one sealing ring is arranged on the fitting surface of the sleeve and the valve body, and is arranged along the circumferential direction of the sleeve. According to the fixed ball valve, sealing effects of the whole ball valve can be remarkably improved, liquid leakage can be effectively prevented, the bearing and the valve rod can be prevented from being damaged by particles in a medium, the operating torque of the valve rod is effectively reduced, good bearing lubricating effects are ensured, and the service life of the whole ball valve is prolonged.
Description
Technical field
The utility model relates to ball valve technical field, particularly relates to a kind of fixing ball valve of favorable sealing property.
Background technique
The defeated coal technology of pipeline can realize long distance, large conveying quantity, low cost, pollution-free, lossless fortune coal, the defeated coal medium of pipeline is that granularity, concentration meet the coal water mixture slurry that pipeline conveying requires, general coal-water ratio example is 1:1, and temperature is normal temperature, at least 30 years service lives.Therefore, to having relatively high expectations of ball valve in pipeline, and the fixing ball valve of pivot structure can effectively be got rid of medium residual in pipeline with it, is subject to the favor of Coal Chemical Industry industry.
The patent documentation that our company's number of applying for a patent is CN202118292U discloses a kind of fixing ball valve, and it mainly comprises valve body, valve gap, valve seat, valve rod and spheroid, is arranged with sleeve in the outside of valve rod; Between sleeve and spheroid, being provided with seal ring, is directly to contact cooperation between sleeve and valve body.In long using process; in pipeline, flowing medium infilters in the space between spheroid and valve body from valve base sealing; and further along the surface of contact of sleeve and valve body, outwards ooze out; even can infilter in the filler between valve rod and gland flange; particle in medium not only can cause very big injury to valve rod after contacting with valve rod; simultaneously; this media particle also can make valve rod in rotary course, be subject to thrust radially; increased the moment of torsion of valve; affect the lubrication effect of bearing, and then shortened the working life of valve.
Model utility content
For this reason, the solid ball valve that the technical problems to be solved in the utility model is to provide a kind of good sealing effect and then increases the service life.
For achieving the above object, the utility model is by the following technical solutions:
A kind of fixing ball valve, comprises valve body, and the both sides of described valve body are respectively equipped with valve gap, in the inner chamber of described valve body, are provided with spool, and the fitted seal place of described spool and described valve gap is provided with valve seat; Described spool is by being connected to its top, and the valve rod control of extending described valve body upper-end surface opens and closes, and described valve rod is rotatably fixed on described valve body by gland flange; The outside of described valve rod is arranged with sleeve, and the lower end of described sleeve is arranged with bearing, and described spool top is provided with groove, and the outer ring of described bearing and the sidewall of described groove closely cooperate; Between the outer wall of described sleeve and the sidewall of described groove, be provided with seal ring, described seal ring is arranged on the top of described bearing, between the outer wall of described sleeve and described valve body, be sealed and matched, and described sleeve be provided with at least with the fitting surface place of described valve body together with described seal ring, described seal ring is along the circumferential directions of described sleeve.
The described seal ring arranging between the sidewall of the outer wall of described sleeve and described valve body and described groove is equal O-ring seals.
Described sleeve and described gland flange are split-type structural, and the upper-end surface of described sleeve is against on the lower end of described gland flange.
Described sleeve and described gland flange are integral type structure.
The beneficial effects of the utility model are:
1. between the outer wall of the utility model sleeve and valve body, be sealed and matched, and be provided with at least one seal ring, this setup is equivalent to be provided with again at least one seal structures on leakage passage more, can obviously improve the sealing effect of whole ball valve, effectively prevent leakage, and then guarantee that bearing and valve rod are not injured by the particle in medium, effectively reduce the operation moment of torsion of valve rod, guarantee the good lubrication effect of bearing, and then extend the working life of whole ball valve.
2. sleeve of the present utility model and gland flange are integral type structure, can reduce assembling work amount, and then improve the manufacturing efficiency of fixing ball valve.
Accompanying drawing explanation
For the content that makes model utility is more likely to be clearly understood, below in conjunction with specific embodiment and accompanying drawing, the utility model is described in further detail, wherein
Fig. 1 is the whole-cutaway view of the utility model plan view;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is that the utility model is equipped with the plan view after final controlling element;
Fig. 4 is that to be split-type structural with gland flange coordinate schematic diagram with sleeve of the present utility model;
Fig. 5 is that another kind of embodiment's middle sleeve is the schematic diagram that coordinates of integral type structure with gland flange;
Fig. 6 is the B position partial enlarged drawing of Fig. 1.
In figure, reference character is expressed as:
1-valve body; 2-valve gap; 3-spool; 4-valve seat; 5-valve rod; 6-gland flange; 7-sleeve; 8-bearing; 9-seal ring; 10-Thurst washer.
Embodiment
Referring to Fig. 1-3, a kind of fixing ball valve, comprises valve body 1, and the both sides of described valve body 1 are respectively equipped with valve gap 2, are provided with spool 3 in the inner chamber of described valve body 1, and described spool 3 is spherical spool; Described spool 3 is provided with valve seat 4 with the fitted seal place of described valve gap 2; Described spool 3 is by being connected to its top, and the valve rod 5 that extends described valve body 1 upper-end surface is controlled and opened and closed.Described valve rod 5 is rotatably fixed on described valve body 1 by gland flange 6, and the upper end portion of described valve rod 5 is connected with final controlling element.The outside of described valve rod 5 is arranged with sleeve 7, the lower end of described sleeve 7 is arranged with bearing 8, described spool 3 tops are provided with groove, the outer ring of described bearing 8 and the sidewall of described groove closely cooperate, the lower end of described bearing 8 is against in the projection of described valve rod 5 lower ends, between described projection and the lower end of described bearing 8, is provided with Thurst washer 10.
When described valve rod 5 drives described spool 3 to rotate, the spool 3 of spherical can rotate with respect to described sleeve 7 by described bearing 8, and described bearing 8 can reduce the frictional force between described sleeve and described spool 3 as much as possible, and described valve is easily operated.Between the outer wall of described sleeve 7 and the sidewall of described groove, be provided with seal ring 9, described seal ring 9 is arranged on the top of described bearing 8, between the outer wall of described sleeve 7 and described valve body 1, be sealed and matched, and described seal ring 9 together with being provided with the fitting surface place of described valve body 1 at described sleeve 7, described seal ring 9 is along the circumferential directions of described sleeve 7.
Referring to Fig. 4, Fig. 6, the described sleeve 7 in the present embodiment is split-type structural with described gland flange 6, and the upper-end surface of described sleeve 7 is against the lower end of described gland flange 6.The place that is sealed and matched of described sleeve 7 and described valve body 1, and described sleeve 7 all along the circumferencial direction of sleeve 7 outer walls, arrange with the place of being sealed and matched of described spool 3 together with seal ring.Certainly, according to technique needs, also can be arranged to multiple-sealed circle, further to improve sealing effect.
In the present embodiment, the described seal ring 9 arranging between the outer wall of described sleeve 7 and the sidewall of described valve body 1 and described groove is O-ring seals.
Referring to Fig. 5, as another kind of mode of execution of the present utility model, described sleeve 7 can also be integral type structural design with described gland flange 6, and this design can reduce assembling work amount, and then improves the manufacturing efficiency of fixing ball valve.
Above-mentioned embodiment is just explained in detail the technical solution of the utility model; the utility model has more than and is only confined to above-described embodiment; those skilled in the art should be understood that; the above-mentioned principle of every foundation and the improvement of spirit on the utility model basis, substitute, all should be within protection domain of the present utility model.
Claims (4)
1. a fixing ball valve, comprises valve body (1), and the both sides of described valve body (1) are respectively equipped with valve gap (2), is provided with spool (3) in the inner chamber of described valve body (1), and described spool (3) is provided with valve seat (4) with the fitted seal place of described valve gap (2); Described spool (3) is by being connected to its top, and the valve rod (5) that extends described valve body (1) upper-end surface controls and open and close, and described valve rod (5) is rotatably fixed on described valve body (1) by gland flange (6); The outside of described valve rod (5) is arranged with sleeve (7), and the lower end of described sleeve (7) is arranged with bearing (8), and described spool (3) top is provided with groove, and the outer ring of described bearing (8) and the sidewall of described groove closely cooperate; Between the outer wall of described sleeve (7) and the sidewall of described groove, be provided with seal ring (9), described seal ring (9) is arranged on the top of described bearing (8), it is characterized in that: between the outer wall of described sleeve (7) and described valve body (1), be sealed and matched, and described sleeve (7) be provided with at least with the fitting surface place of described valve body (1) together with described seal ring (9), described seal ring (9) is along the circumferential directions of described sleeve (7).
2. a kind of fixing ball valve according to claim 1, is characterized in that: the described seal ring (9) arranging between the outer wall of described sleeve (7) and the sidewall of described valve body (1) and described groove is O-ring seals.
3. a kind of fixing ball valve according to claim 2, is characterized in that: described sleeve (7) is split-type structural with described gland flange (6), and the upper-end surface of described sleeve (7) is against on the lower end of described gland flange (6).
4. a kind of fixing ball valve according to claim 2, is characterized in that: described sleeve (7) is integral type structure with described gland flange (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320610439.7U CN203548972U (en) | 2013-09-30 | 2013-09-30 | Fixed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320610439.7U CN203548972U (en) | 2013-09-30 | 2013-09-30 | Fixed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548972U true CN203548972U (en) | 2014-04-16 |
Family
ID=50467092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320610439.7U Expired - Fee Related CN203548972U (en) | 2013-09-30 | 2013-09-30 | Fixed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548972U (en) |
-
2013
- 2013-09-30 CN CN201320610439.7U patent/CN203548972U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140416 Termination date: 20210930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |