CN219013360U - Single seat valve that leakproofness is good - Google Patents

Single seat valve that leakproofness is good Download PDF

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Publication number
CN219013360U
CN219013360U CN202222815741.8U CN202222815741U CN219013360U CN 219013360 U CN219013360 U CN 219013360U CN 202222815741 U CN202222815741 U CN 202222815741U CN 219013360 U CN219013360 U CN 219013360U
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China
Prior art keywords
valve
rod
seat
connecting pipe
top end
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Application number
CN202222815741.8U
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Chinese (zh)
Inventor
谢宗华
许春旺
洪红明
龙堂荣
颜小兰
蔡培勇
李炳青
谢蚜玲
孙巧凤
杨浩平
陈忠丽
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Sun Yeh Control Valve Group Co ltd
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Sun Yeh Control Valve Group Co ltd
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Priority to CN202222815741.8U priority Critical patent/CN219013360U/en
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Publication of CN219013360U publication Critical patent/CN219013360U/en
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Abstract

The utility model discloses a single-seat valve with good sealing performance, which comprises a valve seat with a valve cavity, wherein a cylindrical valve cylinder is arranged in the valve cavity of the valve seat, an I-shaped circulation cavity is formed in the valve cylinder, liquid inlets and liquid outlets which are communicated with two ends of the circulation cavity and are obliquely arranged are respectively formed at two end parts of the valve cylinder, a connecting pipe is arranged at the top end of the valve seat, a sealing groove which is communicated with the circulation cavity is formed at the top end of the valve cylinder, a T-shaped sealing pipe is arranged in the sealing groove, and a connecting hole corresponding to the sealing groove is formed in the valve seat; the utility model is convenient for controlling the valve core, and is suitable for occasions with low pressure difference and high regulation precision; because the inside at the seal groove is equipped with the sealed tube of T shape, the top of sealed tube is equipped with the bellows of cover on the valve rod, can play fine sealed effect to the junction of valve rod and disk seat and connecting pipe, has avoided the condition that fluid revealed from the junction of valve rod and disk seat to take place.

Description

Single seat valve that leakproofness is good
Technical Field
The utility model relates to a single-seat valve, in particular to a single-seat valve with good sealing performance.
Background
The valve body of the single-seat regulating valve is internally provided with a valve core and a valve seat, and has the characteristic of small leakage. The valve has large unbalanced force, allows the pressure difference to be smaller than that of a double-seat valve, and is preferably provided with a valve positioner under the conditions of high pressure difference and large caliber. The valve with the nominal diameter more than or equal to 25mm is of a double-guide structure, and air opening or air closing can be realized by only changing the connection position of the valve rod and the valve core.
The existing single-seat valve is inconvenient to control the valve core, is not suitable for occasions with low pressure difference and high adjusting precision, is poor in sealing performance in the using process and can possibly cause leakage, so that improvement is made by the inventor, and the single-seat valve with good sealing performance is provided.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the single-seat valve with good sealing performance.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model discloses a single-seat valve with good sealing performance, which comprises a valve seat with a valve cavity, wherein a cylindrical valve cylinder is arranged in the valve cavity of the valve seat, an I-shaped circulating cavity is formed in the valve cylinder, liquid inlets and liquid outlets which are communicated with two ends of the circulating cavity and are obliquely arranged are respectively formed in the two ends of the valve cylinder, a connecting pipe is arranged at the top end of the valve seat, a sealing groove which is communicated with the circulating cavity is formed in the top end of the valve cylinder, a T-shaped sealing pipe is arranged in the sealing groove, a connecting hole corresponding to the sealing groove is formed in the valve seat, the bottom end of the connecting pipe penetrates through the connecting hole and presses the sealing pipe into the sealing groove, a valve rod which vertically downwards penetrates through the sealing pipe is arranged in the connecting pipe, a T-shaped valve core which is matched with the circulating cavity is arranged at the bottom end of the valve rod, a corrugated pipe sleeved on the valve rod is arranged at the top end of the sealing pipe, and a film actuator for driving the valve rod to move is arranged at the top end of the connecting pipe.
As a preferable technical scheme of the utility model, the top end of the valve rod is connected with a connecting rod connected with a push rod arranged on the film actuator through a connecting piece.
As a preferable technical scheme of the utility model, the connecting piece comprises a step arranged at the bottom end of the connecting rod, an external thread is arranged at the step of the connecting rod, and a thread groove meshed with the external thread is arranged at the top end of the valve rod.
As a preferable technical scheme of the utility model, the connecting piece further comprises a gland sleeved at the step of the connecting rod and used for compressing the corrugated pipe, and a fastening nut used for propping the gland is connected at the step of the connecting rod in a threaded manner.
As a preferable technical scheme of the utility model, the connecting rod is connected with the push rod through the fixing piece, the fixing piece comprises a first connecting plate arranged at the top end of the connecting rod and a second connecting plate arranged at the bottom end of the push rod, and the first connecting plate and the second connecting plate are connected in a matched manner through screws and nuts.
As a preferable technical scheme of the utility model, a rectangular supporting frame connected with the film actuator is arranged at the top end of the connecting pipe, and connecting rings are arranged at the upper end and the lower end of the supporting frame.
As a preferable technical scheme of the utility model, the top end of the connecting pipe is matched and sleeved with the connecting ring, a plurality of elastic rings which are mutually overlapped are arranged at the joint of the connecting pipe and the connecting rod, a containing cavity for containing the elastic rings is arranged on the connecting pipe, a compression ring for compressing the elastic rings to the containing cavity is arranged on the connecting pipe, and a compression plate sleeved on the connecting rod for limiting the compression ring is fixedly matched with the top end of the connecting pipe through a screw and a nut.
The beneficial effects of the utility model are as follows:
the valve rod is pushed to move downwards by the working of the film actuator, the valve rod is pushed to move, the circulation cavity is blocked by the T-shaped valve core, so that the single-seat valve is closed, the valve rod is driven to move upwards by the film actuator, the valve rod drives the valve core to move upwards, the T-shaped valve core is separated from the circulation cavity, and the single-seat valve is opened, so that the valve core is convenient to control, and the valve is suitable for occasions with low pressure difference and high regulation precision; because the inside at the seal groove is equipped with the sealed tube of T shape, the top of sealed tube is equipped with the bellows of cover on the valve rod, can play fine sealed effect to the junction of valve rod and disk seat and connecting pipe, has avoided the condition that fluid revealed from the junction of valve rod and disk seat to take place.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic illustration of a single seat valve of the present utility model with good sealing properties;
FIG. 2 is a cross-sectional view of a single seat valve of the present utility model with good sealing properties;
FIG. 3 is a cross-sectional view of a single seat valve connector with good sealing properties according to the present utility model;
FIG. 4 is a cross-sectional view of a single seat valve fastener of the present utility model with good sealing properties;
FIG. 5 is a schematic view of the structure of FIG. 2A of a single seat valve of the present utility model with good sealing.
In the figure: 1. a valve seat; 2. a valve cylinder; 3. a flow-through chamber; 4. a liquid inlet; 5. a liquid outlet; 6. a connecting pipe; 7. sealing grooves; 8. sealing the tube; 9. a connection hole; 10. a valve stem; 11. a valve core; 12. a bellows; 13. a thin film actuator; 14. a connecting piece; 15. a connecting rod; 16. a thread groove; 17. a gland; 18. a fixing member; 19. a first connecting plate; 20. a second connecting plate; 21. a support frame; 22. a connecting ring; 23. an elastic ring; 24. a compression ring; 25. a compacting plate; 26. a push rod.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
Examples: as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the single-seat valve with good tightness comprises a valve seat 1 with a valve cavity, a cylindrical valve cylinder 2 is arranged in the valve cavity of the valve seat 1, an I-shaped circulation cavity 3 is arranged in the valve cylinder 2, liquid inlets 4 and liquid outlets 5 which are communicated with two ends of the circulation cavity 3 and are obliquely arranged are respectively arranged at two end parts of the valve cylinder 2, a connecting pipe 6 is arranged at the top end of the valve seat 1, connecting flanges are arranged at the upper end and the lower end of the connecting pipe 6, the connecting flanges at the bottom end of the connecting pipe 6 are connected with the valve seat 1 through screws, a sealing groove 7 communicated with the circulation cavity 3 is arranged at the top end of the valve cylinder 2, a T-shaped sealing pipe 8 is arranged in the sealing groove 7, a connecting hole 9 corresponding to the sealing groove 7 is arranged on the valve seat 1, the bottom end of the connecting pipe 6 passes through the connecting hole 9 and presses the sealing pipe 8 down into the sealing groove 7, the inside of the connecting pipe 6 is provided with a valve rod 10 which vertically downwards passes through the sealing pipe 8, the bottom end of the valve rod 10 is provided with a T-shaped valve core 11 which is matched with the circulation cavity 3, the top end of the sealing pipe 8 is provided with a corrugated pipe 12 sleeved on the valve rod 10, the top end of the connecting pipe 6 is provided with a film actuator 13 which drives the valve rod 10 to move, the film actuator 13 works to push the valve rod 10 to move downwards, the valve rod 10 pushes the valve core 11 to move so as to enable the T-shaped valve core 11 to block the circulation cavity 3, thereby closing a single seat valve, the film actuator 13 drives the valve rod 10 to move upwards, and the valve core 11 of the T-shape is separated from the circulation cavity 3, thereby opening the single seat valve, facilitating the control of the valve core 11, being applicable to occasions with low pressure difference and high adjustment precision; because the T-shaped sealing tube 8 is arranged in the sealing groove 7, the corrugated tube 12 sleeved on the valve rod 10 is arranged at the top end of the sealing tube 8, so that a good sealing effect can be achieved on the joint of the valve rod 10, the valve seat 1 and the connecting tube 6, and the condition that fluid leaks from the joint of the valve rod 10 and the valve seat 1 is avoided.
The top of the valve rod 10 is connected with a connecting rod 15 connected with a push rod 26 arranged on the film actuator 13 through a connecting piece 14, the connecting piece 14 comprises a step arranged at the bottom end of the connecting rod 15, an external thread is arranged at the step of the connecting rod 15, a thread groove 16 meshed with the external thread is formed in the top end of the valve rod 10, the connecting piece 14 further comprises a gland 17 sleeved at the step of the connecting rod 15 and used for compressing the corrugated pipe 12, a fastening nut used for propping the gland 17 is connected with the step of the connecting rod 15 in a threaded manner, the fastening nut is firstly screwed on the step of the connecting rod 15, the gland 17 is sleeved at the step of the connecting rod 15, and finally the bottom end of the connecting rod 15 is in the thread groove 16 on the valve rod 10 in a threaded manner.
The connecting rod 15 is connected with the push rod 14 through a fixing piece 18, the fixing piece 18 comprises a first connecting plate 19 arranged at the top end of the connecting rod 15 and a second connecting plate 20 arranged at the bottom end of the push rod 14, and the first connecting plate 19 and the second connecting plate 20 are connected in a matched mode through screws and nuts.
Wherein, the top of the connecting pipe 6 is provided with a rectangular supporting frame 21 connected with the film actuator 13, the upper and lower ends of the supporting frame 21 are respectively provided with a connecting ring 22, and the connecting flange at the top of the connecting pipe 6 is connected with the connecting ring 22 at the bottom of the supporting frame 21 through screws.
Wherein, the top of connecting pipe 6 cup joints with go-between 22 phase-match, and the junction of connecting pipe 6 and connecting rod 15 is equipped with a plurality of elastic rings 23 that stack each other, has seted up the accomodate chamber of accomodating elastic ring 23 on the connecting pipe 6, is equipped with on the connecting pipe 15 to compress tightly the clamping ring 24 of accomodating the chamber with elastic ring 23, and the top of connecting pipe 6 is fixed with the clamp plate 25 that overlaps on connecting rod 15 spacing to clamping ring 24 through screw and nut cooperation.
When the valve is in operation, the film actuator 13 works to push the valve rod 10 to move downwards, the valve rod 10 pushes the valve core 11 to move, so that the T-shaped valve core 11 blocks the circulation cavity 3, thereby closing the single seat valve, the film actuator 13 drives the valve rod 10 to move upwards, the valve rod 10 drives the valve core 11 to move upwards, and the T-shaped valve core 11 is separated from the circulation cavity 3, thereby opening the single seat valve, facilitating the control of the valve core 11, and being suitable for occasions with low pressure difference and high regulation precision; because the T-shaped sealing tube 8 is arranged in the sealing groove 7, the corrugated tube 12 sleeved on the valve rod 10 is arranged at the top end of the sealing tube 8, so that a good sealing effect can be achieved on the joint of the valve rod 10, the valve seat 1 and the connecting tube 6, and the condition that fluid leaks from the joint of the valve rod 10 and the valve seat 1 is avoided.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The utility model provides a single seat valve that leakproofness is good, including disk seat (1) that has the valve pocket, a serial communication port, be equipped with tube-shape valve section of thick bamboo (2) in the valve pocket of disk seat (1), I-shaped circulation chamber (3) have been seted up to the inside of valve section of thick bamboo (2), inlet (4) and liquid outlet (5) that communicate and incline to set up with the both ends of circulation chamber (3) have been seted up respectively to the both ends tip of valve section of thick bamboo (2), the top of disk seat (1) is equipped with connecting pipe (6), the top of valve section of thick bamboo (2) is equipped with seal groove (7) with circulation chamber (3) intercommunication, the inside of seal groove (7) is equipped with sealed tube (8) of T shape, set up on disk seat (1) with sealed tube (7) corresponding connecting hole (9), the bottom of connecting pipe (6) is passed connecting hole (9) and is pushed down in sealed tube (8), the inside of connecting pipe (6) is equipped with vertical decurrent and passes valve rod (10) of sealed tube (8), the bottom of valve rod (10) is equipped with T shape and is equipped with seal valve rod (11) that matches with circulation chamber (3), the top (8) seal tube's top (8), valve rod (12) is equipped with the valve rod (12) of the valve rod (6) and carries out the motion of diaphragm (12) on valve rod (6).
2. The single-seat valve with good sealing performance according to claim 1, wherein the top end of the valve rod (10) is connected with a connecting rod (15) connected with a push rod (26) arranged on the film actuator (13) through a connecting piece (14).
3. The single-seat valve with good sealing performance according to claim 2, wherein the connecting piece (14) comprises a step arranged at the bottom end of the connecting rod (15), an external thread is arranged at the step of the connecting rod (15), and a thread groove (16) meshed with the external thread is formed at the top end of the valve rod (10).
4. A single-seat valve with good sealing performance according to claim 3, wherein the connecting piece (14) further comprises a gland (17) sleeved at the step of the connecting rod (15) for compressing the corrugated pipe (12), and a fastening nut for propping the gland (17) is in threaded connection with the step of the connecting rod (15).
5. The single-seat valve with good sealing performance according to claim 4, wherein the connecting rod (15) is connected with the push rod (26) through a fixing piece (18), the fixing piece (18) comprises a first connecting plate (19) arranged at the top end of the connecting rod (15) and a second connecting plate (20) arranged at the bottom end of the push rod (26), and the first connecting plate (19) and the second connecting plate (20) are connected in a matched manner through screws and nuts.
6. The single-seat valve with good sealing performance according to claim 1, wherein a rectangular supporting frame (21) connected with the film actuator (13) is arranged at the top end of the connecting pipe (6), and connecting rings (22) are arranged at the upper end and the lower end of the supporting frame (21).
7. The single-seat valve with good sealing performance according to claim 6, wherein the top end of the connecting pipe (6) is sleeved with the connecting ring (22) in a matching way, a plurality of elastic rings (23) which are mutually overlapped are arranged at the joint of the connecting pipe (6) and the connecting rod (15), a containing cavity for containing the elastic rings (23) is formed in the connecting pipe (6), a pressing ring (24) for pressing the elastic rings (23) to the containing cavity is arranged on the connecting rod (15), and a pressing plate (25) sleeved on the connecting rod (15) for limiting the pressing ring (24) is fixedly matched with the top end of the connecting pipe (6) through screws and nuts.
CN202222815741.8U 2022-10-25 2022-10-25 Single seat valve that leakproofness is good Active CN219013360U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222815741.8U CN219013360U (en) 2022-10-25 2022-10-25 Single seat valve that leakproofness is good

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222815741.8U CN219013360U (en) 2022-10-25 2022-10-25 Single seat valve that leakproofness is good

Publications (1)

Publication Number Publication Date
CN219013360U true CN219013360U (en) 2023-05-12

Family

ID=86243533

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222815741.8U Active CN219013360U (en) 2022-10-25 2022-10-25 Single seat valve that leakproofness is good

Country Status (1)

Country Link
CN (1) CN219013360U (en)

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