CN201184421Y - Throttle type ceramic gate valve - Google Patents

Throttle type ceramic gate valve Download PDF

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Publication number
CN201184421Y
CN201184421Y CNU2008200025615U CN200820002561U CN201184421Y CN 201184421 Y CN201184421 Y CN 201184421Y CN U2008200025615 U CNU2008200025615 U CN U2008200025615U CN 200820002561 U CN200820002561 U CN 200820002561U CN 201184421 Y CN201184421 Y CN 201184421Y
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CN
China
Prior art keywords
valve
valve body
flashboard
gate valve
outlet
Prior art date
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 - Lifetime
Application number
CNU2008200025615U
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Chinese (zh)
Inventor
王忱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shengkai (Tianjin) Industrial Co. Ltd.
Original Assignee
TIANJIN SHENGKAI INDUSTRIAL TECHN DEVELOPMENT Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TIANJIN SHENGKAI INDUSTRIAL TECHN DEVELOPMENT Co Ltd filed Critical TIANJIN SHENGKAI INDUSTRIAL TECHN DEVELOPMENT Co Ltd
Priority to CNU2008200025615U priority Critical patent/CN201184421Y/en
Application granted granted Critical
Publication of CN201184421Y publication Critical patent/CN201184421Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

A ceramic gate valve for controlling the flow rate of a fluid relates to a gate valve. The gate valve can change the direction of a medium flow to reduce the erosion strength of the medium on a valve body, and ceramic is arranged on a valve seat, a flashboard and the valve body of the gate valve to effectively prevent erosion and abrasion of solid particles, thereby improving the service life and the throttling effect of the valve. The gate valve is characterized in that a ceramic seal component is arranged on the inlet valve seat and the flashboard facing the inlet side; the inlet axis of the valve body is higher than the outlet axis of the valve body; the inlet diameter of the valve body is smaller than the outlet diameter of the valve body, so that the medium flow is located in a center position on the outlet side of the valve body so as to reduce the erosion and abrasion of the pipe wall of the valve body by the medium. Accordingly, the ceramic gate valve can change the medium flow direction and can prevent corrosion and erosion by using the ceramic components in the throttling state, thereby improving the service life of the valve.

Description

The throttling type ceramic gate valve
Technical field:
The present invention relates to a kind of gate valve.Particularly a kind of ceramic gate valve that is used for the control media flow.
Background technique:
Valve is a kind of device of controlling fluid motion.The throttling gate valve is a kind of of valve.Comprise valve body, flashboard, valve seat and driving mechanism; Valve body left side is provided with import, and the right side is provided with import and outlet, is provided with ring-shaped valve seats in the valve pocket import and the outlet of valve body, is provided with flashboard in the valve pocket, and flashboard is connected with driving mechanism.Flashboard opens and closes can the control valve import and being communicated with and blocking of outlet.
When driving mechanism drive flashboard moves upward, flashboard sealing surface and sealing surface of seat break away from, valve is tending towards opening medium and promptly enters valve pocket from valve inlet and flow out from valve export, and the area of opening between flashboard and the valve seat has determined the flow of medium, and the big more rate-of flow of the area of opening is big more.Valve was in the full open state when flashboard and sealing surface of seat broke away from fully, and it is maximum that rate-of flow reaches.When driving mechanism drive flashboard moved downward, flashboard sealing surface and sealing surface of seat were progressively fitted, and the more little rate-of flow of the area that flashboard and valve seat are opened is more little, and valve is tending towards closing more.When flashboard and sealing surface of seat were fitted fully, valve was in full closing state.Flowing medium is blocked can't be passed through from valve.
In power station slag slurry control system, the flashboard of throttling gate valve is in incomplete opening state all the time, just flashboard is in the swiftly flowing medium all the time, swiftly flowing medium is to serious the washing away and wear and tear of the generation of flashboard, valve seat and valve body, destroyed the sealability of valve, caused valves leakage or leak outside.Especially when containing solid particle or valve in the flowing medium and be in small aperture; wearing and tearing that solid particle produces valve under the promotion of High Pressure Difference fluid and wash away even more serious; the throttle of this system's use is generally Wedge gate valve at present; because Wedge gate valve import and outlet size and position are always; MEDIA FLOW is directly washed away valve body; and this valve adopts metallic material; the antiscour of metallic material and antiwear property are very limited; this just makes metal valve seal failure in a short period of time; valve produces interior leakage or leaks outside, and only be about one month the working life of this valve usually.
Summary of the invention:
The present invention aims to provide a kind of throttling type ceramic gate valve.The direction that it can change MEDIA FLOW reduces the scouring intensity of medium to valve body, flashboard, valve seat and valve body installation pottery can effectively prevent washing away of solid particle and wear and tear simultaneously, improve the working life and the restriction effect of valve, guarantee that system condition safely and steadily runs.
The present invention includes valve body, flashboard, valve seat and driving mechanism; The valve body left side is provided with import, and the right side is provided with outlet and flow-guiding mouth, and outlet one side and flashboard import one side of valve are equipped with pottery.Valve body import axis is higher than the valve outlet axis, and the valve body inlet diameter is less than the valve outlet diameter.
Import valve seat of the present invention and flashboard are equipped with the ceramic seal parts towards suction side.
Body cavity of the present invention can all or part of installation pottery into and out of oral-lateral.
Flashboard of the present invention can be that overall structure also can be the branch body structure.
Pottery of the present invention can be oxide ceramics, carbide ceramics, nitride ceramics.
Operation principles of the present invention is:
When driving mechanism 1 drive flashboard 4 moves upward, flashboard 4 sealing surfaces and valve seat 6 sealing surfaces break away from, valve is tending towards opening medium and promptly enters valve pocket from valve inlet and flow out from valve export, the area of opening between flashboard 4 and the valve seat 6 has determined the flow of medium, and the big more rate-of flow of the area of opening is big more.Valve was in the full open state when flashboard 4 broke away from fully with valve seat 6 sealing surfaces, and it is maximum that rate-of flow reaches.When driving mechanism 1 drive flashboard 4 moved downward, flashboard 4 sealing surfaces and valve seat 6 sealing surfaces were progressively fitted, and flashboard 4 is more little with the more little rate-of flow of area that valve seat 6 is opened, and valve is tending towards closing more.When flashboard 4 was fitted fully with valve seat 6 sealing surfaces, valve was in full closing state.Flowing medium is blocked can't be passed through from valve.
In the valve body 2 of the present invention pottery 5 is installed, flashboard 4, valve seat 6 adopt stupalith, pottery has the characteristic of hardness height, wear-resistant, corrosion-resistant, stable chemical performance, can resist washing away and corroding of flowing medium, guarantees the control of lasting effective seal of valve and stable flow rate.
Valve body 2 import axis 3 of the present invention are higher than valve body 2 outlet axis, and valve body 2 inlet diameters guarantee that less than valve body 3 outlet diameters MEDIA FLOW is in the center portion of valve body 3 outlet sides, reduce erosion and the wearing and tearing of medium to valve body 2 tube walls.Improved the working life of valve.
To sum up state describedly, the present invention is a kind of ceramic gate valve that can the control media flow, and it can realize high flow rate, and the flow control of high wear medium prolongs the working life of throttle valve and improves throttling stability.
Description of drawings:
Fig. 1 is an overall schematic of the present invention, i.e. the valve closing schematic representation
Fig. 2 is an opening process schematic representation of the present invention
Fig. 3 is a complete opening schematic representation of the present invention
Fig. 4 leads the cinder notch schematic representation for valve
Embodiment:
With inside nominal diameter DN300mm, the present invention of nominal pressure PN2.5MPa is embodiment;
The present invention is used for the slag slurry control system of power plant, the import and the outlet of valve body 2 is installed in respectively on the slag slurry pipeline.Valve body 2 is imported and exported alumina-based ceramic pipe 7 is installed, valve body 2 outlet settings are led cinder notch, and installation alumina-based ceramic 7, flashboard 4 is installed ceramic-seal ring 8 and ceramic protection apron 9, valve seat 6 is installed ceramic-seal ring 8, valve body import axis 3 is higher than valve body 2 outlet axis, and valve body 2 inlet diameters are less than valve body 2 outlet diameters.
Under the present invention in off position, medium enters valve pocket from import, and flashboard sealing surface and sealing surface of seat fit tightly, and valve export is in sealing state, and medium is blocked.Valve is tending towards opening when driving mechanism 1 drive flashboard 4 moves up, medium can enter valve pocket from valve body 2 imports, flows out from valve body 2 outlets, and the area that rate-of flow is opened with flashboard 4 and valve seat 6 increases and increases gradually, when flashboard 4 broke away from valve seat fully, valve was in whole opening states.
The present invention has wear-resisting, antiscour can long-term control wearing and tearing class rate-of flow, characteristics such as long service life.

Claims (4)

1, a kind of throttling type ceramic gate valve is characterized in that comprising valve body, flashboard, valve seat and driving mechanism; The valve body left side is provided with import, and the right side is provided with outlet and flow-guiding mouth, and outlet one side and flashboard import one side of valve are equipped with pottery, and valve body import axis is higher than the valve outlet axis, and the valve body inlet diameter is less than the valve outlet diameter.
2,, it is characterized in that import valve seat and flashboard are equipped with the ceramic seal parts towards suction side according to the described throttling type ceramic gate valve of claim 1.
3,, it is characterized in that the body cavity import and export can all or part of installation pottery according to the described throttling type ceramic gate valve of claim 1.
4,, it is characterized in that flashboard can be that overall structure also can be the branch body structure according to the described throttling type gate valve of claim 1.
CNU2008200025615U 2008-01-22 2008-01-22 Throttle type ceramic gate valve Expired - Lifetime CN201184421Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200025615U CN201184421Y (en) 2008-01-22 2008-01-22 Throttle type ceramic gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200025615U CN201184421Y (en) 2008-01-22 2008-01-22 Throttle type ceramic gate valve

Publications (1)

Publication Number Publication Date
CN201184421Y true CN201184421Y (en) 2009-01-21

Family

ID=40272160

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200025615U Expired - Lifetime CN201184421Y (en) 2008-01-22 2008-01-22 Throttle type ceramic gate valve

Country Status (1)

Country Link
CN (1) CN201184421Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748488A (en) * 2012-07-06 2012-10-24 河南天纵实业有限公司 Large-caliber ultrathin metallic oxide throttle valve
KR20150063584A (en) * 2012-10-18 2015-06-09 바르실라 핀랜드 오이 Gas exchange valve arrangement
CN111022676A (en) * 2019-12-25 2020-04-17 凯喜姆阀门有限公司 Wear-resistant anti-scouring gate valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748488A (en) * 2012-07-06 2012-10-24 河南天纵实业有限公司 Large-caliber ultrathin metallic oxide throttle valve
KR20150063584A (en) * 2012-10-18 2015-06-09 바르실라 핀랜드 오이 Gas exchange valve arrangement
CN104822911A (en) * 2012-10-18 2015-08-05 瓦锡兰芬兰有限公司 Gas exchange valve arrangement
KR102134052B1 (en) * 2012-10-18 2020-07-15 바르실라 핀랜드 오이 Gas exchange valve arrangement
CN111022676A (en) * 2019-12-25 2020-04-17 凯喜姆阀门有限公司 Wear-resistant anti-scouring gate valve

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DD01 Delivery of document by public notice

Addressee: Tianjin Shengkai Industrial Techn Development Co., Ltd.

Document name: Notification that Application Deemed not to be Proposed

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Effective date of registration: 20160623

Address after: 300308 No. 106 South Central Road, Tianjin Airport Economic Zone

Patentee after: Shengkai (Tianjin) Industrial Co. Ltd.

Address before: 300350 No. 27 Wang Hong Road, Jinnan Development Zone, Tianjin

Patentee before: Tianjin Shengkai Industrial Techn Development Co., Ltd.

DD01 Delivery of document by public notice

Addressee: Tianjin Shengkai Industrial Techn Development Co., Ltd.

Document name: Notification of Passing Examination on Formalities

CX01 Expiry of patent term

Granted publication date: 20090121

CX01 Expiry of patent term