CN204140915U - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN204140915U CN204140915U CN201420597509.4U CN201420597509U CN204140915U CN 204140915 U CN204140915 U CN 204140915U CN 201420597509 U CN201420597509 U CN 201420597509U CN 204140915 U CN204140915 U CN 204140915U
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- valve
- connecting tube
- valve body
- described valve
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Abstract
The utility model discloses a kind of gate valve, wherein, gate valve comprises the valve body with three-port structure, the upper end open place of valve body is connected with valve gap, valve rod penetrates in valve body, and the upper end of valve rod is vertically connected with handwheel, its lower end is connected with the valve plate controlling opening and closing, the difference left connecting tube of plug-in mounting and right connecting tube in the left and right opening be oppositely arranged in the lower end of valve body, left connecting tube and right connecting tube are equipped with valve seat on the inner of valve plate, and the outer peripheral surface of left connecting tube and right connecting tube is welded and fixed with the left and right side, lower end of valve body respectively.The utility model, processing the parts forging molding in the gate valve such as valve body, left and right connecting tube respectively again, then assembles, without the need to re-using special fixture, reducing labor intensity, decrease the mach time.
Description
Technical field
The utility model relates to valve field, is specifically related to gate valve.
Background technique
High pressure sluice valve rational in infrastructure, sealing is reliable, operate light, the equal surfacing cemented carbide of its sealing surface, there is the advantages such as anticorrosion, wear-resisting, erosion resistance, and can be used for throttling, be particularly useful for working pressure≤42MPa, the water of operating temperature≤120 DEG C, oil, mud, natural gas line make keying and the controlling device of control media flowing.It can thus be appreciated that gate valve application is comparatively wide, be mainly applicable to the conveying of oil, rock gas, mirabilite, the exploitation of saline solution underground and oil plant, gas pipe line.But conventional high pressure sluice valve adopts the method for the casting of valve body integrated type or forging molding aborning, therefore, use special clamping device adding man-hour requirement, not only waste time and energy, also make difficulty of processing increase, and final process is also difficult to obtain guarantee.
Model utility content
Technical problem to be solved in the utility model solves existing gate valve body integrated type casting to there will be a lot of quality problems, such as pore, sand holes and other defect, also need to use special clamping device simultaneously, not only waste time and energy, also make the problem that difficulty of processing increases.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is to provide a kind of gate valve, comprise the valve body with three-port structure, it is characterized in that, the upper end open place of described valve body is connected with valve gap, described valve gap is provided with through hole, valve rod penetrates in described valve body by described through hole, and the upper end of described valve rod is vertically connected with handwheel, its lower end is connected with the valve plate controlling opening and closing, stuffing box is installed with in described valve body, and described valve gap is pressed on described stuffing box, the top of described valve gap is connected with Stem Mut, in described valve gap and and be provided with setting sleeve between described Stem Mut, some thrust ball bearings are provided with in described setting sleeve, the upper end of described setting sleeve is provided with the plug screw for locking, the lower end of described valve body is left, the difference left connecting tube of plug-in mounting and right connecting tube in the opening that the right side is oppositely arranged, described left connecting tube and described right connecting tube are equipped with valve seat on the inner of described valve plate, the outer peripheral surface of described left connecting tube and described right connecting tube is left with the lower end of described valve body respectively, right flank is welded and fixed.
In such scheme, described valve plate and described valve rod clamp connection by dovetail groove, and the mode that described valve gap and described valve body are threaded connection is installed and is connected.
In such scheme, the outer peripheral surface of described left and right connecting tube is arranged to inner small and outside big step-like respectively, and the outer peripheral surface of its minor diameter is provided with the screw thread for being connected with described valve body.
In such scheme, described valve seat adopts Spielpassung to be connected with described left and right connecting tube, and is provided with the first seal groove sealed between described left and right connecting tube and described valve seat, is provided with some O RunddichtringOs in described first seal groove.
In such scheme, between described stuffing box and described valve rod and between described stuffing box and described valve body, be provided with the second seal groove, in described second seal groove, be provided with some O RunddichtringOs.
In such scheme, the upper end of described Stem Mut is provided with instruction cover, and described instruction cover has been provided with the label of indicative function, and the upper end of described valve rod is connected with pointer.
The utility model, adopt the mode of decomposing type processing, parts in the gate valves such as valve body, left and right connecting tube and valve rod are processed respectively, then assemble, this structure and technological method thereof, without the need to re-using special fixture in the process of gate valve processing, reducing labor intensity, decreasing the mach time; Meanwhile, in Stem Mut, adopt the duplex bearing of thrust ball bearing to locate, make the unlatching of valve lighter, laborsaving; In whole valve, adopt multi-sealing structure, ensure that the zero leakage of valve; And sealing position between valve plate and valve seat adopts hardfacing alloy powder, make it to have wear-resistant, the advantage that the life-span is long.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that in the utility model, valve body is connected with left and right connecting tube.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As depicted in figs. 1 and 2, the utility model provides a kind of gate valve, comprise the valve body 1 with three-port structure, the upper end of valve body 1 is connected with valve gap 2 by valve port, valve gap 2 is provided with through hole, valve rod 3 penetrates in valve body 1 by through hole, and the upper end of valve rod 3 is vertically connected with handwheel 4, its lower end is connected with the valve plate 5 controlling opening and closing, stuffing box 6 is installed with in valve body 1, and valve gap 2 is pressed on stuffing box 6, the top of valve gap 2 is connected with Stem Mut 7, in valve gap 2 and and be provided with setting sleeve 8 between Stem Mut 7, some thrust ball bearings are provided with in setting sleeve 8, the upper end of setting sleeve 8 is provided with the plug screw 9 for locking, the lower end of valve body is left, in the opening that the right side is oppositely arranged, plug-in mounting is left respectively, right connecting tube 10, left connecting tube and right connecting tube are equipped with valve seat on the inner of valve plate, the outer peripheral surface of left connecting tube and right connecting tube is left with the lower end of valve body respectively, right flank is welded and fixed.
Valve plate 5 and valve rod 3 clamp connection by dovetail groove, and the mode that valve gap 2 and valve body 1 are threaded connection is installed and is connected.
The outer peripheral surface of left and right connecting tube is arranged to inner small and outside big step-like respectively, and the outer peripheral surface of its minor diameter is provided with the screw thread for being connected with valve body.
Valve seat 11 adopts Spielpassung to be connected with left and right connecting tube 10, and is provided with between left and right connecting tube 10 and valve seat 11 in the first seal groove 12, first seal groove 12 of sealing and is provided with some O RunddichtringOs.
Be provided with between stuffing box 6 and valve rod 3 and between stuffing box 6 and valve body 1 in second seal groove 13, second seal groove 13 and be provided with some O RunddichtringOs.
The upper end of valve rod 3 nut is provided with instruction cover 14, and instruction cover 14 has been provided with the label 15 of indicative function, and the upper end of valve rod 3 is connected with pointer 16.
The technological method making above-mentioned gate valve adopts decomposing type processing technology, comprises the steps:
Step 1, respectively making valve body 1 and left and right connecting tube 10;
Step 2, in the inner side of left and right connecting tube 10, valve seat 11 is set by the mode of Spielpassung, and seals by arranging O RunddichtringO;
Step 3, valve body 1 and left and right connecting tube 10 to be threaded connection, and to be located by positioning step, soldering is carried out in the outer contacting face after valve body 1 and left and right connecting tube 10 are assembled;
Step 4, valve rod 3 to be connected by dovetail groove with valve plate 5, from top to bottom through valve seat 11, to enter in valve body 1;
Step 5, be installed in valve body 1 by stuffing box 6, valve rod 3 and stuffing box 6 adopt Spielpassung to install, and carry out the sealing of stuffing box 6 and valve rod 3 and stuffing box 6 and valve body 1 by O RunddichtringO;
Step 6, valve gap 2 and valve body 1 to be threaded connection, to be pressed on stuffing box 6 to valve gap 2, and with nut, valve gap to be locked on valve body;
Step 7, thrust ball bearing is set between valve gap 2 and Stem Mut 7 to realize reducing torsional interaction, and is locked by compressing plug screw 9 above thrust ball bearing;
Step 8, screw in fluting cone end Cock screw 17 to plug screw 9 in valve gap 2 side, thus plug screw 9 is locked on valve gap 2;
Step 9, handwheel 4 for controlling valve plate opening and closing is set in the upper end of Stem Mut 7, and handwheel 4 is connected by flat key 18 with Stem Mut 7;
Step 10, instruction cover 14 is set in the upper end of Stem Mut 7, and pointer 16 is threaded connection the upper end being arranged on valve rod 3, and use nut check.
Wherein, in step 1, the processing technology step of valve body is as follows:
Forged valve chaeta blank;
Carry out the heat treatment process such as normalizing, tempering;
Whether the valve body blank part of inspection after Overheating Treatment meets the usage requirement such as intensity, hardness;
By machining modes such as machinings, the tolerance of size of valve body blank part structure length (face-to-face) is controlled at 0 ~+0.05mm, and ensures degree of symmetry, obtain the valve body meeting usage requirement.
In step 1, the processing technology step of left and right connecting tube is as follows:
Forge left and right connecting tube blank;
Carry out the heat treatment process such as normalizing, tempering;
Whether the left and right connecting tube blank of inspection after Overheating Treatment meets the usage requirement such as intensity, hardness;
By machining modes such as machinings, left and right connecting tube blank screw thread end face is controlled at 0 ~-0.02mm to the tolerance of size of positioning step end face, obtains the left and right connecting tube meeting usage requirement.
In step 3, valve body is as follows with the welding process requirement of left and right connecting tube: adopt carbon dioxide gas arc welding to weld; During welding, welding current control is at 150 ~ 180A, and weldingvoltage controls at 18V, and gas flow rate controls at 18 ~ 20L/min, and postwelding carries out ageing treatment.
The utility model, adopt the mode of decomposing type processing, parts in the gate valves such as valve body, left and right connecting tube and valve rod are processed respectively, then assemble, this structure and technological method thereof, without the need to re-using special fixture in the process of gate valve processing, reduce labor intensity, improve Product Precision and up-to-standard rate, decrease the mach time; Meanwhile, in Stem Mut, adopt the duplex bearing of thrust ball bearing to locate, make the unlatching of valve lighter, laborsaving; In whole valve, adopt multi-sealing structure, ensure that the zero leakage of valve; And the sealing position between valve plate and valve seat adopts hardfacing alloy powder, have wear-resistant, the advantage that the life-span is long.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change made under enlightenment of the present utility model, and every have identical or close technological scheme with the utility model, all falls within protection domain of the present utility model.
Claims (6)
1. gate valve, comprise the valve body with three-port structure, it is characterized in that, the upper end open place of described valve body is connected with valve gap, described valve gap is provided with through hole, valve rod penetrates in described valve body by described through hole, and the upper end of described valve rod is vertically connected with handwheel, its lower end is connected with the valve plate controlling opening and closing, stuffing box is installed with in described valve body, and described valve gap is pressed on described stuffing box, the top of described valve gap is connected with Stem Mut, in described valve gap and and be provided with setting sleeve between described Stem Mut, some thrust ball bearings are provided with in described setting sleeve, the upper end of described setting sleeve is provided with the plug screw for locking, the lower end of described valve body is left, the difference left connecting tube of plug-in mounting and right connecting tube in the opening that the right side is oppositely arranged, described left connecting tube and described right connecting tube are equipped with valve seat on the inner of described valve plate, the outer peripheral surface of described left connecting tube and described right connecting tube is left with the lower end of described valve body respectively, right flank is welded and fixed.
2. gate valve as claimed in claim 1, it is characterized in that, described valve plate and described valve rod clamp connection by dovetail groove, and the mode that described valve gap and described valve body are threaded connection is installed and is connected.
3. gate valve as claimed in claim 1, is characterized in that, the outer peripheral surface of described left and right connecting tube is arranged to inner small and outside big step-like respectively, and the outer peripheral surface of its minor diameter is provided with the screw thread for being connected with described valve body.
4. gate valve as claimed in claim 1, it is characterized in that, described valve seat adopts Spielpassung to be connected with described left and right connecting tube, and is provided with the first seal groove sealed between described left and right connecting tube and corresponding described valve seat, is provided with some O RunddichtringOs in described first seal groove.
5. gate valve as claimed in claim 4, is characterized in that, be provided with the second seal groove between described stuffing box and described valve rod and between described stuffing box and described valve body, be provided with some O RunddichtringOs in described second seal groove.
6. gate valve as claimed in claim 1, is characterized in that, the upper end of described Stem Mut is provided with instruction cover, and described instruction cover has been provided with the label of indicative function, and the upper end of described valve rod is connected with pointer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597509.4U CN204140915U (en) | 2014-10-16 | 2014-10-16 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597509.4U CN204140915U (en) | 2014-10-16 | 2014-10-16 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140915U true CN204140915U (en) | 2015-02-04 |
Family
ID=52417600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420597509.4U Active CN204140915U (en) | 2014-10-16 | 2014-10-16 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178643A (en) * | 2017-06-17 | 2017-09-19 | 林之铠 | Cooling system gate valve on a kind of ship |
| CN104315175B (en) * | 2014-10-16 | 2019-02-15 | 余金海 | Gate valve and its manufacture craft |
-
2014
- 2014-10-16 CN CN201420597509.4U patent/CN204140915U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315175B (en) * | 2014-10-16 | 2019-02-15 | 余金海 | Gate valve and its manufacture craft |
| CN107178643A (en) * | 2017-06-17 | 2017-09-19 | 林之铠 | Cooling system gate valve on a kind of ship |
| CN107178643B (en) * | 2017-06-17 | 2019-08-13 | 奉化市中新阀门有限公司 | Cooling system gate valve on a kind of ship |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170310 Address after: 325000 Zhejiang province Ruian City Feiyun Street District People Feiyun Road No. 518 Patentee after: Zhejiang Jinlong Auto Control Equipment Co., Ltd. Address before: 325000 Wenzhou City, Ruian province Ting Tian Town, No. 434 Middle Road, No. Patentee before: Yu Jinhai |