CN201851759U - Pneumatic single-seat bidirectional seal track ball valve - Google Patents

Pneumatic single-seat bidirectional seal track ball valve Download PDF

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Publication number
CN201851759U
CN201851759U CN2010206173459U CN201020617345U CN201851759U CN 201851759 U CN201851759 U CN 201851759U CN 2010206173459 U CN2010206173459 U CN 2010206173459U CN 201020617345 U CN201020617345 U CN 201020617345U CN 201851759 U CN201851759 U CN 201851759U
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China
Prior art keywords
valve
seat
track ball
pneumatic single
lining
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Expired - Lifetime
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CN2010206173459U
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Chinese (zh)
Inventor
俞晓龙
黎玉飞
刘永良
刘际
周岩
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Changzheng Engineering Co Ltd
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BEIJING AEROSPACE WANYUAN COAL CHEMICAL ENGINEERING TECHNOLOGY Co Ltd
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Priority to CN2010206173459U priority Critical patent/CN201851759U/en
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Abstract

The utility model provides a pneumatic single-seat bidirectional seal track ball valve comprising a hollow valve body (1) provided with an opening, a ball body (2) arranged in a cavity of the valve body (1), a valve cap support (5) sheathed at the opening part of the valve body (1), a valve rod (9) extending in the valve cap support (5) and a drive device (10) connected with the upper end connection of the valve rod (9), wherein the lower end of the valve rod (9) is connected with the ball body (2) in a propping way; the ball valve is characterized in that the drive device (10) is a cylinder (10), and a piston rod of the cylinder (10) is connected with the valve rod (9). In addition, the utility model also relates to an improvement on the connecting part (B) used for connecting the valve rod (9) and the cylinder (10), and an improvement on a valve seat component (A).

Description

A kind of pneumatic single seat two way sealed track ball valve
Technical field
A kind of pneumatic single seat two way sealed track ball valve is used for liquid, gas transmission pipeline control, belongs to technical field of valve manufacturing.
Background technique
At employed floating ball ball valves of industrial field such as oil, chemical industry, metallurgy and papermaking and fixing spherical ball valve, its spheroid contacts with valve seat in opening-closing process all the time, and it is excessive to cause opening and closing moment, the sealing pair serious wear, working life is short, easily leaks, and has seriously restricted its using scope.And orbit ball valve has overcome the shortcoming of above-mentioned ball valve, combines the advantage of gate valve, stop valve, stopcock and ball valve, has improved usability.Therefore, obtained extensive use at some special occasions lower railway ball valve as switch valve.
Present employed track ball valve has following characteristics:
First, traditional track ball valve is mainly handwheel-gear-bolt rod driving, electrical header-gear-modes such as bolt rod driving, wherein, handwheel-gear-bolt rod driving track ball valve is because automaticity is not high, application area is limited, and electrical header-gear-screw rod track ball valve cost is higher, and the spiro driving device operation time should be born axially than high thrust or pulling force, have 90 ° relatively rotate again, in use being prone to the motion thread surface wear scratches, frictional force increases, and causes steering force to strengthen, and interference phenomenon etc. may occur;
The second, the valve lever bushing of some track ball valves is too short, be subjected to the big damage easily of valve rod active force, and other track ball valve linings is long, are unfavorable for lining processing and internal circular surfaces sclerosis;
The 3rd, sealing force relies on the final controlling element ouput force fully, causes valve to hinder for some reason when losing efficacy at final controlling element and can't realize sealing.
Summary of the invention
The purpose of this utility model is to overcome the described defective of background technique, and a kind of pneumatic single seat two way sealed track ball valve is provided, and this track ball valve has characteristics such as sealing is reliable, steering force is little, the life-span is long.
For overcoming above-mentioned defective, the utility model is achieved through the following technical solutions:
A kind of pneumatic single seat two way sealed track ball valve comprises: the hollow valve body with opening; Be arranged on the spheroid in the described body cavity; Be socketed in the valve gap support on the opening portion of described valve body; The valve rod that in described valve gap support, extends, the wherein lower end of valve rod and spheroid butt; The drive unit that connects the upper end connection of described valve rod.Wherein, described drive unit is a cylinder, and the piston rod of cylinder and described valve rod join.
Preferably, described pneumatic single seat two way sealed track ball valve also comprises the lining that is arranged between described valve rod and the described valve gap support, it is characterized in that, described lining comprises lining and following lining.
Preferably, the described diameter of going up the diameter of lining less than following lining.
Preferably, described lining down has throat structure.
Preferably, described pneumatic single seat two way sealed track ball valve also comprises and is used to connect the piston rod of described cylinder and the connected element of described valve rod.
Further preferably, described connected element comprises: the bearing baffle that is connected with threaded stem; The inner sleeve that is connected with described piston rod thread; Upper bearing (metal) circle and lower bearing circle respectively with the last thrust bearing of described inner sleeve and bearing baffle butt; The outer sleeve that is threaded with described inner sleeve; Upper bearing (metal) circle and lower bearing circle respectively with the following thrust bearing of described bearing baffle and outer sleeve butt.
Preferably, described pneumatic single seat two way sealed track ball valve also comprises the valve component that is arranged between spheroid and the valve body.
Further preferably, described valve component comprises: the valve seat pressure ring of annular, and its outer surface and body cavity connect; The valve seat of annular, one end and spheroid butt, outer surface and described valve seat pressure ring be butt slidably; Spring, one end are set in the groove of valve seat pressure ring axial end, and the inner chamber of the other end and valve body is butt axially; Described valve seat leaves radial clearance diametrically and between the inner chamber of valve body; Described valve seat is provided with the bigger stepped part of diameter on the outer surface, form annular space in this stepped part and described valve seat pressure ring, and described annular space is connected with described radial clearance.
More preferably, described pneumatic single seat two way sealed track ball valve also comprises the valve seat back-up ring that is arranged in the body cavity, and described valve seat can axially slide in the interval of valve seat back-up ring and valve body qualification.
Preferably, the axial cross section of described annular space is a triangle.
Preferably, described pneumatic single seat two way sealed track ball valve also comprises and is arranged on the filler that is used to seal between described valve rod and the described valve gap support, filler gland and the Gland that is used for fixing described filler.
By adopting such scheme, the utlity model has following advantage and effect:
1, the utility model has adopted the cylinder actuator driven, and automaticity is higher and cost is lower.
2, the connected element of Zeng Jiaing, both renewal part arbitrarily to adjust Conncetion cimension, had improved its versatility, and, owing to adopted thrust bearing, reduced piston rod and valve rod frictional force in relative rotation, improved transmission efficiency.
3, two-part lining of the present utility model has increased the lining length overall, has shortened the length of single lining, thereby has improved the intensity of each lining, and has reduced the difficulty of processing and internal surface sclerosis; The internal diameter of last lining is less, can reduce the filler internal diameter, thereby reduces the frictional force of filler to valve rod, and the throat structure of following lining can prevent that valve rod from blowing out;
4, particular usage valve stand structure of the present utility model is when closing or opening by cylinder final controlling element operated valve, identical with common rail ball valve operating principle.When actuator hinders when losing efficacy for some reason, high-pressure medium enters from no valve seat end, and medium is leg-of-mutton annular space from the axial cross section that valve seat and valve body reserving gaps enter the formation of valve seat pressure ring, provides sealing force to valve seat; When high-pressure medium entered valve body from the valve seat end, medium can directly promote the valve seat pressure ring and promote valve seat by it to compress spheroid, realizes sealing.This structure can guarantee no matter to have or not outer steering force all can realize two way sealed.
Description of drawings
Fig. 1 is the sectional view of pneumatic single seat two way sealed track ball valve disclosed in the utility model;
Fig. 2 is the local amplification view of valve component A among Fig. 1;
Fig. 3 is the amplification view of connected element B among Fig. 1;
Fig. 4 is the local amplification view of two-part bush structure (shown in C) among Fig. 1.
Reference numerals list is as follows:
1. valve body; 2. spheroid; 3. descend lining; 4. go up lining; 5. valve gap support; 6. filler; 7. filler gland; 8. Gland; 9. valve rod; 10. cylinder; A. valve component (A-1. valve seat; A-2. spring; A-3. valve seat pressure ring; A-4. valve seat back-up ring; A-5. seal ring); B. connected element (B-1. outer sleeve; B-2. bearing baffle; B-3. inner sleeve; B-4. outer backing-up screw; B-5. interior backing-up screw; B-6. up-thrust bearing; B-7. lower thrust-bearing); N. descend the throat structure of lining 3
Embodiment
A kind of embodiment below in conjunction with accompanying drawing is showed further specifies content of the present utility model:
As shown in Figure 1, a kind of pneumatic single seat two way sealed track ball valve comprises: valve body 1, valve gap support 5, spheroid 2, valve component A, valve rod 9, lining 3 and 4, filler 6, filler gland 7, Gland 8, connected element B, cylinder 10.Wherein the position between the critical piece of this ball valve is as follows with annexation: the piston rod of cylinder 10 is connected with valve rod 9 by connected element B, and valve rod 9 stretches out the hole in the middle of valve gap support 5; Between valve gap support 5 and valve rod 9, be provided with stuffing box packing 6, filler gland 7 and Gland 8; Filler 6 belows are lining.Spheroid 2 is arranged in the valve body 1, upper end and valve rod 9 butts; Valve component A is arranged on the joint between spheroid 2 and the valve body 1.
The present invention is by using cylinder 10 actuate valve stem 9, and it is poor to have overcome in the prior art driving mode commonly used or automaticity, perhaps the high defective of manufacture cost.
Preferably, described lining is two ends formula linings, promptly goes up lining 4 and following lining 3.The design of this two-part lining has increased the lining length overall, has shortened the length of single lining, thereby has improved the intensity of each lining, and has reduced the difficulty of processing and internal surface sclerosis.
As shown in Figure 4, the internal diameter of last lining 4 is less, can reduce the filler internal diameter, thereby reduces the frictional force of filler to valve rod, and 3 times linings 3 of following lining have throat structure N, guarantees that valve rod 9 can not blow out under the high-pressure medium effect.
In addition, the utility model has carried out the novelty design to the structure of valve component A.As shown in Figure 2, described valve component A comprises: valve seat A-1, spring A-2, valve seat pressure ring A-3, valve seat back-up ring A-4, seal ring A-5.Valve seat A-1, valve seat pressure ring A-3, valve seat back-up ring A-4, seal ring A-5 are loop configuration, only show its upper half part in cross section vertically among Fig. 2.Against each other via valve seat A-1, pressure ring A-3 and spring A-2 between valve body 1 and the spheroid 2, the end of its medi-spring A-2 is set in the reentrant part of pressure ring A-3, and the other end heads on valve body 1.Wherein pressure ring A-3 reentrant part can along the circumferential direction be provided with a plurality ofly, and a plurality of spring A-2 correspondingly are set in each reentrant part.Valve seat pressure ring A-3 and valve seat A-1 can axially slide.Especially, when using valve seat back-up ring A-4 to be fixed on the valve body 1 by screw thread, valve seat pressure ring A-3 and valve seat A-1 can axially slide in the interval of valve seat back-up ring A-4 and valve body 1 qualification.Pressure ring A-3 and valve seat A-1 also can relatively endwisely slip each other, and form annular space V between pressure ring A-3 and the valve seat A-1.For example, can form an axial cross section by inclined surface respect to one another is leg-of-mutton annular space V.Outside not having during steering force, the high-pressure medium that forward (among Fig. 2 from left to right) enters enters the annular space V that valve seat pressure ring A-3 and valve seat A-1 form by the slit between valve seat A-1 and valve body 1 and the valve seat back-up ring A-4, the high-pressure medium that enters annular space V can compress valve seat A-1 to the left, realizes sealing; Oppositely (among Fig. 2 from right to left) medium of entering directly promotes valve seat pressure ring A-3, and promotes valve seat A-1 by valve seat pressure ring A-3 and compress left, realizes sealing.Spring A-2 provide pretightening force, realizes the sealing when pressure medium is low.When valve passed through cylinder 10 normal runnings, moving valve seat A-1 helped sealing surface centering, and at this moment, valve seat pressure ring A-3 compresses valve body 1 during valve closing.
Innovative design of the present utility model also comprises connected element B.As shown in Figure 3, described connected element B comprises: outer sleeve B-1, bearing baffle B-2, inner sleeve B-3, outer backing-up screw B-4, interior backing-up screw B-5, upper bearing (metal) B-6, lower bearing B-7.Upper bearing (metal) B-6 and lower bearing B-7 are thrust bearing, the following circle of the end butt upper bearing (metal) B-6 of bearing baffle B-2, and going up of inner sleeve B-3 butt upper bearing (metal) B-6 enclosed; The other end butt lower bearing B-7 of bearing baffle B-2 goes up circle, and the following circle of lower bearing B-7 is set on the interior step of outer sleeve B-1, and outer sleeve B-1 and inner sleeve B-3 be by being threaded, and in addition tightening is locking by outer backing-up screw B-4.During use, bearing baffle B-2 is connected with track ball valve valve rod 9 by screw thread, and tightening is locking in addition by interior backing-up screw B-5, and inner sleeve B-3 is connected by the piston rod of screw thread with cylinder 10.
The working principle of connected element B of the present invention is: when cylinder 10 applies down pressure, be delivered to bearing baffle B-2 by inner sleeve B-3, upper bearing (metal) B-6, thereby be delivered on the valve rod 9; Cylinder 10 applies when upper pulling force, is delivered to bearing baffle B-2 by inner sleeve B-3, outer sleeve B-1, lower bearing B-7, thereby is delivered on the valve rod 9.
In addition, preferred, as shown in Figure 2, can be on valve seat A-1 and spheroid 2 contacted sealing surfaces coated cemented carbide, with the working life of raising valve.
Though the utility model has been made detailed explanation in conjunction with the accompanying drawings; and provided concrete mode of execution; but be to be understood that; above-mentioned explanation or embodiment are only used for making those skilled in the art to understand the utility model better, rather than are used for protection domain of the present utility model is limited.Those skilled in the art can use above-mentioned one of them innovative point as required separately or use the combination of multiple innovative point, thereby realize various mode of execution.Therefore, protection domain of the present utility model should be as the criterion with the technological scheme that claims limit.

Claims (11)

1. pneumatic single seat two way sealed track ball valve comprises:
Hollow valve body (1) with opening;
Be arranged on the spheroid (2) in described valve body (1) inner chamber;
Be socketed in the valve gap support (5) on the opening portion of described valve body (1);
The valve rod (9) that in described valve gap support (5), extends, the wherein lower end of valve rod (9) and spheroid (2) butt;
The drive unit (10) that connects the upper end connection of described valve rod (9);
It is characterized in that:
Described drive unit (10) is cylinder (10), and the piston rod of cylinder (10) and described valve rod (9) join.
2. pneumatic single seat two way sealed track ball valve according to claim 1 also comprises the lining (3,4) that is arranged between described valve rod (9) and the described valve gap support (5), it is characterized in that described lining comprises lining (4) and following lining (3).
3. pneumatic single seat two way sealed track ball valve according to claim 2 is characterized in that, the described diameter of going up the diameter of lining (4) less than following lining (3).
4. according to claim 2 or 3 described pneumatic single seat two way sealed track ball valves, it is characterized in that described lining (3) down has throat structure (N).
5. pneumatic single seat two way sealed track ball valve according to claim 1 also comprises being used to connect the piston rod of described cylinder (10) and the connected element (B) of described valve rod (9).
6. pneumatic single seat two way sealed track ball valve according to claim 5 is characterized in that described connected element (B) comprising:
The bearing baffle (B-2) that is threaded with valve rod (9);
The inner sleeve (B-3) that is connected with described piston rod thread;
Upper bearing (metal) circle and lower bearing circle respectively with the last thrust bearing (B-6) of described inner sleeve (B-3) and bearing baffle (B-2) butt;
The outer sleeve (B-1) that is threaded with described inner sleeve (B-3);
Upper bearing (metal) circle and lower bearing circle respectively with the following thrust bearing (B-7) of described bearing baffle (B-2) and outer sleeve (B-1) butt.
7. pneumatic single seat two way sealed track ball valve according to claim 1 also comprises the valve component (A) that is arranged between spheroid (2) and the valve body (1).
8. pneumatic single seat two way sealed track ball valve according to claim 7 is characterized in that described valve component (A) comprising:
The valve seat pressure ring (A-3) of annular, its outer surface and valve body (1) inner chamber connects;
The valve seat (A-1) of annular, one end and spheroid (2) butt, outer surface and described valve seat pressure ring (A-3) be butt slidably;
Spring (A-2), one end are set in the groove of valve seat pressure ring (A-3) axial end, and the inner chamber of the other end and valve body (1) is butt axially;
Described valve seat (A-1) leaves radial clearance diametrically and between the inner chamber of valve body (1);
Described valve seat (A-1) is provided with the bigger stepped part of diameter on the outer surface, form annular space (V) in this stepped part and described valve seat pressure ring (A-3), and described annular space is connected with described radial clearance.
9. pneumatic single seat two way sealed track ball valve according to claim 8 also comprises the valve seat back-up ring (A-4) that is arranged in valve body (1) inner chamber, and described valve seat (A-1) can axially slide in the interval that valve seat back-up ring (A-4) and valve body (1) limit.
10. according to Claim 8 or 9 described pneumatic single seat two way sealed track ball valves, it is characterized in that the axial cross section of described annular space (V) is a triangle.
11. pneumatic single seat two way sealed track ball valve according to claim 1, it is characterized in that, also comprise being arranged on the filler (6) that is used to seal between described valve rod (9) and the described valve gap support (5), the filler gland (7) that is used for fixing described filler (6) and Gland (8).
CN2010206173459U 2010-11-19 2010-11-19 Pneumatic single-seat bidirectional seal track ball valve Expired - Lifetime CN201851759U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206173459U CN201851759U (en) 2010-11-19 2010-11-19 Pneumatic single-seat bidirectional seal track ball valve

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102494152A (en) * 2011-12-12 2012-06-13 徐贻钦 Control ball valve
CN103302441A (en) * 2012-03-09 2013-09-18 陕西飞机工业（集团）有限公司 Bushing component and damaged hole repairing method
CN116697082A (en) * 2023-08-07 2023-09-05 艾坦姆流体控制技术(山东)有限公司 Pneumatic track ball valve with shock resistance function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102494152A (en) * 2011-12-12 2012-06-13 徐贻钦 Control ball valve
CN103302441A (en) * 2012-03-09 2013-09-18 陕西飞机工业（集团）有限公司 Bushing component and damaged hole repairing method
CN116697082A (en) * 2023-08-07 2023-09-05 艾坦姆流体控制技术(山东)有限公司 Pneumatic track ball valve with shock resistance function

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Owner name: CHANGZHENG ENGINEERING CO., LTD.

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