CN204664490U - Three-way hard seal ball valve - Google Patents
Three-way hard seal ball valve Download PDFInfo
- Publication number
- CN204664490U CN204664490U CN201520227122.4U CN201520227122U CN204664490U CN 204664490 U CN204664490 U CN 204664490U CN 201520227122 U CN201520227122 U CN 201520227122U CN 204664490 U CN204664490 U CN 204664490U
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- valve
- spheroid
- valve body
- bonnet
- seal ball
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Abstract
The utility model discloses a kind of three-way hard seal ball valve, comprise valve body, valve seat, spheroid, valve body is upper dress formula valve body, upper dress formula body cavity has four passages arranged in " ten " font, the internal channel mouth of each passage arranges a valve seat respectively, preloading spring is provided with between each valve seat and corresponding valve channel, the outer end of a valve channel is fixed with bottom wherein, other three valve channels are made to form three-port structure, spheroid is arranged between four valve seats, the lower positioning shaft of spheroid is inserted in valve body positioning hole and is coordinated with valve body rotationally by Lower shaft sleeve, on valve body, lower end is separately installed with, bottom flange, spheroid upper valve rod is coordinated with bonnet by Upper shaft sleeve rotationally through bonnet, valve seat is provided with the concave arc sealing surface of fitting with spheroid sphere, the mouth end of concave arc sealing surface is provided with scraper.The utility model has good sealability and wear-resisting property, long service life, greatly extends the checking maintenance cycle, improves manufacturing efficiency.
Description
Technical field
The utility model relates to valve field, particularly a kind of three-way hard seal ball valve.
Background technique
At present, in salt chemical engineering PVC synthesis system, usually adopt three-way valve to change the flow direction of pipeline medium, the working principle that three-way valve is used in salt chemical engineering PVC synthesis system is, PVC and hot water are sent into appointment crucible oven respectively by pipeline synthesize, again the PVC slurry after synthesis is discharged synthesizer by three-way valve, thus the technique constantly repeated, this just requires that the sealability of three-way valve when commutating need reach VI grade of sealing, to ensure that PVC and PVC slurry can not be leaked in water heating system, otherwise whole system will be caused contaminated once enter PVC in water heating system, cause serious economic loss.Existing three-way valve adopts the floating type tee ball valve of import usually, because the medium in this floating type tee ball valve is PVC, PVC slurry and water, therefore during floating type tee ball valve work, under the promotion of high pressure nitrogen, PVC in floating type tee ball valve is entered crucible oven by high pressure nitrogen, to realize salt chemical engineering PVC synthesis.But adopt existing floating type tee ball valve but to have the following disadvantages: 1, because three-way valve is floating structure, after high pressure nitrogen enters three-way valve, spool is promoted, thus makes the center of spool and valve body inconsistent, greatly increase operational torque; 2, the operational torque due to this structure is large, and the frequency of on-off times is large, easily causes valve seat and spheroid to pull, thus causes the phenomenon of valves leakage and jam; 3, because three-way valve is soft sealing structure, although can ensure the leakage grade of valve, spheroid is floating structure, and under high-pressure medium, soft valve seat is easily pulled or scraped by spheroid, causes the leakage of valve serious; 4, because three-way valve is floating type soft sealing structure, without preloading spring, valve after reaching the standard grade, is caused to open.In addition, existing floating type tee ball valve is often easy causes whole system to stop because of above defect, directly causes serious economic loss.
Therefore, urgent need exploitation is a kind of has good sealability and wear-resisting property, the three-way hard seal ball valve of long service life.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of three-way hard seal ball valve, and the utility model has good sealability and wear-resisting property, long service life, greatly extends the checking maintenance cycle, improves manufacturing efficiency.
Three-way hard seal ball valve of the present utility model, comprise valve body, valve seat, spheroid, described valve body is upper dress formula valve body, on this, dress formula body cavity has four passages arranged in " ten " font, the internal channel mouth of each passage arranges a valve seat respectively, preloading spring is provided with between each valve seat and corresponding valve channel, the outer end of a valve channel is fixed with bottom wherein, other three valve channels are made to form three-port structure, described spheroid is arranged between four valve seats, described spheroid is integrally formed with upper valve rod and lower positioning shaft, described upper valve rod and lower positioning shaft are same shaft axis, the lower positioning shaft of described spheroid is inserted in the positioning hole that valve body lower end is provided with and is coordinated with valve body rotationally by Lower shaft sleeve, upper dress formula valve body lower end is provided with bottom flange, the upper end of described upper dress formula valve body is provided with bonnet, the upper valve rod of spheroid is overhanging through bonnet, and coordinated with bonnet rotationally by Upper shaft sleeve, described valve seat is provided with the concave arc sealing surface of fitting with spheroid sphere, the mouth end of this concave arc sealing surface is provided with scraper.
Further, one end of described valve seat is provided with the outer stopper for installing preloading spring.
Further, described concave arc sealing surface is coated with the thick hard alloy layer of 1 ~ 1.5mm.
Further, described spheroid sphere is coated with the thick hard alloy layer of 1 ~ 1.5mm.
Further, the lower positioning shaft of described spheroid is provided with the clutch shaft bearing coordinated with Lower shaft sleeve, and the upper valve rod of spheroid is provided with the second bearing coordinated with Upper shaft sleeve.
Further, the gap between described bonnet top and upper valve rod arranges stuffing box packing, and a gland is fixedly connected with bonnet and pushes down stuffing box packing.
The beneficial effects of the utility model: three-way hard seal ball valve of the present utility model, for salt chemical engineering PVC synthesis system, 1 ~ 2 times is generally improved than the working life of the inlet valve of former use, system cloud gray model is steady, substantially prolongs the checking maintenance cycle of ball valve, improves manufacturing efficiency, save maintenance cost, simultaneously compared with buying inlet valve price, acquisition cost also reduces greatly, brings huge economic benefit to company.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is the structural representation of valve rod of the present utility model and spheroid;
Fig. 4 is the structural representation of spheroid of the present utility model;
Fig. 5 is the structural representation of valve seat of the present utility model;
Fig. 6 is the structural representation of Lower shaft sleeve of the present utility model.
Embodiment
As shown in the figure: the three-way hard seal ball valve of the present embodiment, valve body 1, valve seat 2, spheroid 3 is comprised.Described valve body 1 is upper dress formula valve body, dress formula valve body not only intensity and good rigidly in employing, and can ensure valve body 1 not affect by pipe stress.On this, dress formula body cavity has four passages arranged in " ten " font, the internal channel mouth of each passage arranges a valve seat 2 respectively, preloading spring 4 is provided with between each valve seat 2 and corresponding valve channel, the outer end of a valve channel is fixed with bottom wherein, make other three valve channels form three-port structure, form three-way valve.Described spheroid 3 is arranged between four valve seats 2, ensure that spheroid 3 is in four direction uniform force, the pressure of being granted by preloading spring 4 pairs of valve seats 2, and valve seat 2 can tightly be fitted with spheroid 3, is also convenient to change parts when safeguarding ball valve convenient.Described spheroid 3 is integrally formed with upper valve rod 5 and lower positioning shaft 6, described upper valve rod 5 and lower positioning shaft 6 are same shaft axis, the lower positioning shaft 6 of described spheroid is inserted in the positioning hole that valve body lower end is provided with and is coordinated with valve body 1 rotationally by Lower shaft sleeve 7, upper dress formula valve body lower end is provided with bottom flange 8, the upper end of described upper dress formula valve body is provided with bonnet 9, the upper valve rod 5 of spheroid is overhanging through bonnet 9, and coordinated with bonnet 9 rotationally by Upper shaft sleeve 10, make valve body 1 form the three-way valve with three runners.Described valve seat 2 is provided with the concave arc sealing surface of fitting with spheroid 3 sphere, with the Percent of contact area of the sealing surface and spheroid 3 sphere that improve valve seat 2, the mouth end of this concave arc sealing surface is provided with scraper 2b, the structure of spheroid 3 sphere can be scraped off in ball valve switch process, improve the sealability of ball valve further.
In the present embodiment, one end of described valve seat 2 is provided with the outer stopper for installing preloading spring 4, to reach dust-proof object, prevents solid particle in flowing medium from entering in valve support chamber, the situation causing preloading spring 4 to lose efficacy, improves the working life of preloading spring 4.
In the present embodiment, described concave arc sealing surface is coated with the thick hard alloy layer of 1 ~ 1.5mm, to improve wear resistance, increases the service life.
In the present embodiment, described spheroid 3 sphere is coated with the thick hard alloy layer of 1 ~ 1.5mm, to improve wear resistance, increases the service life.
In the present embodiment, the lower positioning shaft 6 of described spheroid is provided with the clutch shaft bearing 11 coordinated with Lower shaft sleeve 7, and the upper valve rod 5 of spheroid is provided with the second bearing 12 coordinated with Upper shaft sleeve 10, extends the working life of lower positioning shaft 6 and upper valve rod 5.
In the present embodiment, gap between described bonnet 9 top and upper valve rod 5 arranges stuffing box packing 13, stuffing box packing 13 adopts graphite usually, and a gland 14 is fixedly connected with bonnet 9 and pushes down stuffing box packing 13, stuffing box packing 13 is located and is formed the gap between bonnet 9 and upper valve rod 5 to seal.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (6)
1. a three-way hard seal ball valve, comprise valve body, valve seat, spheroid, it is characterized in that: described valve body is upper dress formula valve body, on this, dress formula body cavity has four passages arranged in " ten " font, the internal channel mouth of each passage arranges a valve seat respectively, preloading spring is provided with between each valve seat and corresponding valve channel, the outer end of a valve channel is fixed with bottom wherein, other three valve channels are made to form three-port structure, described spheroid is arranged between four valve seats, described spheroid is integrally formed with upper valve rod and lower positioning shaft, described upper valve rod and lower positioning shaft are same shaft axis, the lower positioning shaft of described spheroid is inserted in the positioning hole that valve body lower end is provided with and is coordinated with valve body rotationally by Lower shaft sleeve, upper dress formula valve body lower end is provided with bottom flange, the upper end of described upper dress formula valve body is provided with bonnet, the upper valve rod of spheroid is overhanging through bonnet, and coordinated with bonnet rotationally by Upper shaft sleeve, described valve seat is provided with the concave arc sealing surface of fitting with spheroid sphere, the mouth end of this concave arc sealing surface is provided with scraper.
2. three-way hard seal ball valve according to claim 1, is characterized in that: one end of described valve seat is provided with the outer stopper for installing preloading spring.
3. three-way hard seal ball valve according to claim 1, is characterized in that: described concave arc sealing surface is coated with the thick hard alloy layer of 1 ~ 1.5mm.
4. three-way hard seal ball valve according to claim 1, is characterized in that: described spheroid sphere is coated with the thick hard alloy layer of 1 ~ 1.5mm.
5. three-way hard seal ball valve according to claim 1, is characterized in that: the lower positioning shaft of described spheroid is provided with the clutch shaft bearing coordinated with Lower shaft sleeve, and the upper valve rod of spheroid is provided with the second bearing coordinated with Upper shaft sleeve.
6. three-way hard seal ball valve according to claim 1, is characterized in that: the gap between described bonnet top and upper valve rod arranges stuffing box packing, and a gland is fixedly connected with bonnet and pushes down stuffing box packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227122.4U CN204664490U (en) | 2015-04-15 | 2015-04-15 | Three-way hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227122.4U CN204664490U (en) | 2015-04-15 | 2015-04-15 | Three-way hard seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204664490U true CN204664490U (en) | 2015-09-23 |
Family
ID=54134873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520227122.4U Expired - Fee Related CN204664490U (en) | 2015-04-15 | 2015-04-15 | Three-way hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204664490U (en) |
-
2015
- 2015-04-15 CN CN201520227122.4U patent/CN204664490U/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: 20150923 Termination date: 20160415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |