CN204083262U - A kind of modified node method of micro-flow regulating valve - Google Patents
A kind of modified node method of micro-flow regulating valve Download PDFInfo
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- CN204083262U CN204083262U CN201420431898.3U CN201420431898U CN204083262U CN 204083262 U CN204083262 U CN 204083262U CN 201420431898 U CN201420431898 U CN 201420431898U CN 204083262 U CN204083262 U CN 204083262U
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- briquetting
- sleeve pipe
- needle
- flange
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Abstract
The utility model relates to a kind of modified node method of micro-flow regulating valve, comprise valve body, valve gap, valve rod, needle and valve seat, valve bonnet seal is fixed on described valve body, valve base sealing is arranged in valve body, needle is connected with valve seat movable sealing, valve base sealing is embedded in valve body, the top pressure holding of valve seat has sleeve pipe, sleeve pipe has metering orifice, the bottom of sleeve pipe is provided with flange, valve seat is provided with the step fitted with flange, the external diameter of flange is consistent with the external diameter of step, briquetting is arranged with outside sleeve pipe, the bottom of briquetting has interior step hole, briquetting is withheld and also seal laminating flange and step on flange, the bottom of briquetting is connected with valve body screw thread, needle sealing slip is inserted in sleeve pipe, stuffing box comprises filler and is arranged on the metal spacer between filler, and metal spacer is provided with oil guiding hole, and the bottom of filler is provided with filler pad.The modified node method of this micro-flow regulating valve, improves sealability further, thus improves the accuracy of flow control.
Description
Technical field
The utility model relates to a kind of micro-flow regulating valve, particularly relates to a kind of modified node method of micro-flow regulating valve.
Background technique
Micro-flow regulating valve be generally used for compared with malicious, corrosivity is large, the small-flow precise of the medium such as inflammable and explosive controls, and is also usually used in the scientific researches such as laboratory, owing to adopting needle to control flow, is therefore also needle-valve more.This micro-flow regulating valve is due to very high to required precision, therefore the requirement of its sealability is also very high, but micro-flow regulating valve domestic at present, in the process that reality uses, ubiquity the defect of easy leakage sealed poor-performing, thus causes the accurate control of tiny flow quantity to be a domestic difficult problem always.
Model utility content
The purpose of this utility model is the problem overcoming above-mentioned prior art, provides a kind of modified node method of micro-flow regulating valve, and it can promote its sealability, improves the accuracy of flow control.
The purpose of this utility model is achieved through the following technical solutions:
A kind of modified node method of micro-flow regulating valve, comprise valve body, valve gap, valve rod, needle and valve seat, described valve bonnet seal is fixed on described valve body, described valve rod runs through described valve gap, stuffing box is provided with between described valve rod and described valve gap, the top pressure holding of described stuffing box has pressing plate, above described pressing plate, pressure holding has gland, described gland is fixedly connected with described valve gap by bolt, the bottom of described valve rod connects described needle, described valve base sealing is arranged in described valve body, described needle is connected with described valve seat movable sealing, described valve base sealing is embedded in described valve body, the top pressure holding of described valve seat has sleeve pipe, described sleeve pipe has metering orifice, the bottom of described sleeve pipe is provided with flange, described valve seat is provided with the step fitted with described flange, the external diameter of described flange is consistent with the external diameter of described step, briquetting is arranged with outside described sleeve pipe, the bottom of described briquetting has interior step hole, described briquetting is withheld and also seal the described flange of laminating and described step on described flange, the bottom of described briquetting is connected with described valve body screw thread, described needle sealing slip is inserted in described sleeve pipe, described stuffing box comprises filler and is arranged on the metal spacer between described filler, and described metal spacer is provided with oil guiding hole, and the bottom of described filler is provided with filler pad.
By redesigning the sealing at valve seat place, in valve seat and valve body joint, valve seat and cannula connection, the joint of sleeve pipe and briquetting, valve seat and briquetting and the joint of valve body form the seal form that multiple tracks coordinates, ensure sealing effect by the screwing force of screw thread, thus improve sealability further; The simultaneously setting of oil guiding hole in metal spacer, provides to valve rod and lubricates more fully, also contribute to the lifting of valve stem seal effect; Valve rod slides up and down, and drives needle to slide in sleeve, simultaneously has sealing effect between needle and sleeve, from but needle be communicated with or seal closure with valve seat, the metering orifice of flowing medium on sleeve pipe controls flow further.The design of this structure, on the basis improving sealability, improves the accuracy of flow control.
Further, described metal spacer adopts SUS316 stainless steel.
Further, between the base plane of described briquetting and described valve body, there is gap.The setting in gap not only can be avoided interfering, and can regulate screwing force simultaneously.
Further, the position of described metering orifice is higher than described briquetting.
Further, the bottom of described needle has syringe needle, and described valve seat is provided with the pin hole matched with described syringe needle.
The modified node method of micro-flow regulating valve described in the utility model, comprise valve body, valve gap, valve rod, needle and valve seat, valve bonnet seal is fixed on described valve body, valve rod runs through valve gap, stuffing box is provided with between valve rod and valve gap, the top pressure holding of stuffing box has pressing plate, above pressing plate, pressure holding has gland, gland is fixedly connected with valve gap by bolt, the bottom of valve rod connects needle, valve base sealing is arranged in valve body, needle is connected with valve seat movable sealing, valve base sealing is embedded in valve body, the top pressure holding of valve seat has sleeve pipe, sleeve pipe has metering orifice, the bottom of sleeve pipe is provided with flange, valve seat is provided with the step fitted with flange, the external diameter of flange is consistent with the external diameter of step, briquetting is arranged with outside sleeve pipe, the bottom of briquetting has interior step hole, briquetting is withheld and also seal laminating flange and step on flange, the bottom of briquetting is connected with valve body screw thread, needle sealing slip is inserted in sleeve pipe, stuffing box comprises filler and is arranged on the metal spacer between filler, and metal spacer is provided with oil guiding hole, and the bottom of filler is provided with filler pad.The modified node method of this micro-flow regulating valve, improves sealability further, thus improves the accuracy of flow control.
Accompanying drawing explanation
Fig. 1 is the structural representation of the modified node method of a kind of micro-flow regulating valve described in the utility model.
Embodiment
According to drawings and embodiments the utility model is described in further detail below.
As shown in Figure 1, the modified node method of a kind of micro-flow regulating valve described in the utility model embodiment, comprise valve body 1, valve gap 2, valve rod 3, needle 4 and valve seat 5, valve gap 2 sealing is fixed on valve body 1, valve rod 3 runs through valve gap 2, stuffing box is provided with between valve rod 3 and valve gap 2, the top pressure holding of stuffing box has pressing plate 8, above pressing plate 8, pressure holding has gland 9, gland 9 is fixedly connected with valve gap 2 by bolt, the bottom of valve rod 3 connects needle 4, valve seat 5 sealing is arranged in valve body 1, needle 4 is connected with valve seat 5 movable sealing, valve seat 5 sealing is embedded in valve body 1, the top pressure holding of valve seat 5 has sleeve pipe 10, sleeve pipe 10 has metering orifice 11, the bottom of sleeve pipe 10 is provided with flange 10a, valve seat 5 is provided with the step 5a fitted with flange 10a, the external diameter of flange 10a is consistent with the external diameter of step 5a, briquetting 12 is arranged with outside sleeve pipe 10, the bottom of briquetting 12 has interior step hole, briquetting 12 is withheld and also seal laminating flange 10a and step 5a on flange 10a, the bottom of briquetting 12 is threaded with valve body 1, needle 4 seals slip and is inserted in sleeve pipe 10, stuffing box comprises filler 6 and is arranged on the metal spacer 13 between filler 6, and metal spacer 13 is provided with oil guiding hole 13a, and the bottom of filler 6 is provided with filler pad 7.
By redesigning the sealing at valve seat 5 place, in valve seat 5 and valve body 1 joint, valve seat 5 and sleeve pipe 10 joint, the joint of sleeve pipe 10 and briquetting 12, valve seat 5 and briquetting 12 and the joint of valve body 1 form the seal form that multiple tracks coordinates, ensure sealing effect by the screwing force of screw thread, thus improve sealability further; The simultaneously setting of oil guiding hole in metal spacer, provides to valve rod 3 and lubricates more fully, also contribute to the lifting of valve rod 3 sealing effect; Valve rod 3 slides up and down, and drives needle 4 to slide in sleeve, simultaneously has sealing effect between needle 4 and sleeve, from but needle 4 be communicated with or seal closure with valve seat 5, the metering orifice 11 of flowing medium on sleeve pipe 10 controls flow further.The design of this structure, on the basis improving sealability, improves the accuracy of flow control.
Metal spacer 13 adopts SUS316 stainless steel.
Between the base plane of briquetting 12 and valve body 1, there is gap.The setting in gap not only can be avoided interfering, and can regulate screwing force simultaneously.
The position of metering orifice 11 is higher than briquetting 12.
The bottom of needle 4 has syringe needle 4a, and valve seat 5 is provided with the pin hole 5b matched with syringe needle 4a.
The foregoing is only and mode of execution of the present utility model is described; be not limited to the utility model; for a person skilled in the art; all within spirit of the present utility model and principle; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. the modified node method of a micro-flow regulating valve, comprise valve body, valve gap, valve rod, needle and valve seat, described valve bonnet seal is fixed on described valve body, described valve rod runs through described valve gap, stuffing box is provided with between described valve rod and described valve gap, the top pressure holding of described stuffing box has pressing plate, above described pressing plate, pressure holding has gland, described gland is fixedly connected with described valve gap by bolt, the bottom of described valve rod connects described needle, described valve base sealing is arranged in described valve body, described needle is connected with described valve seat movable sealing, it is characterized in that, described valve base sealing is embedded in described valve body, the top pressure holding of described valve seat has sleeve pipe, described sleeve pipe has metering orifice, the bottom of described sleeve pipe is provided with flange, described valve seat is provided with the step fitted with described flange, the external diameter of described flange is consistent with the external diameter of described step, briquetting is arranged with outside described sleeve pipe, the bottom of described briquetting has interior step hole, described briquetting is withheld and also seal the described flange of laminating and described step on described flange, the bottom of described briquetting is connected with described valve body screw thread, described needle sealing slip is inserted in described sleeve pipe, described stuffing box comprises filler and is arranged on the metal spacer between described filler, and described metal spacer is provided with oil guiding hole, and the bottom of described filler is provided with filler pad.
2. the modified node method of micro-flow regulating valve as claimed in claim 1, is characterized in that, described metal spacer adopts SUS316 stainless steel.
3. the modified node method of micro-flow regulating valve as claimed in claim 1, is characterized in that having gap between the base plane of described briquetting and described valve body.
4. the modified node method of micro-flow regulating valve as claimed in claim 1, it is characterized in that, the position of described metering orifice is higher than described briquetting.
5. the modified node method of micro-flow regulating valve as claimed in claim 1, it is characterized in that, the bottom of described needle has syringe needle, and described valve seat is provided with the pin hole matched with described syringe needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420431898.3U CN204083262U (en) | 2014-08-01 | 2014-08-01 | A kind of modified node method of micro-flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420431898.3U CN204083262U (en) | 2014-08-01 | 2014-08-01 | A kind of modified node method of micro-flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083262U true CN204083262U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420431898.3U Active CN204083262U (en) | 2014-08-01 | 2014-08-01 | A kind of modified node method of micro-flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204083262U (en) |
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2014
- 2014-08-01 CN CN201420431898.3U patent/CN204083262U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |