CN2379668Y - Combination and low resistance type check valve - Google Patents
Combination and low resistance type check valve Download PDFInfo
- Publication number
- CN2379668Y CN2379668Y CN 99202513 CN99202513U CN2379668Y CN 2379668 Y CN2379668 Y CN 2379668Y CN 99202513 CN99202513 CN 99202513 CN 99202513 U CN99202513 U CN 99202513U CN 2379668 Y CN2379668 Y CN 2379668Y
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- CN
- China
- Prior art keywords
- little
- valve
- safety check
- utility
- model
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- 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 - Fee Related
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Abstract
The utility model relates to a combination type micro-resistance check valve for opening and closing pipeline fluids. The utility model is composed of a micro-resistance check valve, a safe valve, a small check valve, and a small bypass pipe. The utility model drains the fluid and reduces the pressure after the water supply pipe stops pumping and the back-flowing water pressure exceeds the stated value, and protects the pipeline. The utility model has the advantages of simpler structure, small volume, little resistance, low energy consumption, etc. The utility model is mainly used for supplying water for departments of metallurgy, oilfield, chemical industry, railways, building systems, running water, etc.
Description
The utility model relates to a kind of combined little resistance safety check that is used for the pipeline fluid switch.
The safety check kind that is used for the pipeline fluid switch at present is a lot.Common have H44 type Tiny Drag Slow Shut Check Valves, H44 type Swing check valve, H45 type Multidisc swing foot valve, a H41 type Lift check valve.Existing Tiny Drag Slow Shut Check Valves, though resistance is little, the power consumption few, its structure is complicated, volume is big, the cost height, the deficiency that rotary-open type and Lift check valve exist is that volume is big, resistance big, power consumption is high.
The purpose of this utility model provides that a kind of structure is simple, volume is little, resistance is little, power consumption less, cost is lower, pipeline had combined little resistance safety check of protective action.
The utility model realizes that the technical solution of above-mentioned purpose is, safety valve is installed on little resistance safety check, the intake pipe of safety valve is installed on the water outlet pipeline section of little resistance safety check, the outlet pipe of safety valve is installed on the water inlet segment of little resistance safety check, on safety valve water outlet and little by-pass pipe that little resistance safety check water inlet segment is connected, little safety check is housed, the installation direction of its little safety check is the water outlet of water intake attachment security valve, make water can only enter little safety check and flow back in the water inlet segment of little resistance safety check, and the water of little resistance safety check water inlet segment can not enter safety valve from the water outlet of safety valve.
The utility model compared with prior art; owing to take abovementioned technology; can make earial drainage decompression when refluence hydraulic pressure surpasses regulation numerical value after the water supply line termination of pumping; fraction refluence water flows back to little resistance safety check water inlet segment through safety valve; safety pressure in the controlling plumbing fixtures exactly; the protection pipeline, and have advantages such as structure is simple, volume is little, resistance is little, power consumption is few.
Below in conjunction with a specific embodiment in accompanying drawing detailed description the utility model.Combined little resistance safety check that present embodiment is made up of little resistance elastomeric check valve, safety valve, little safety check and little by-pass pipe.
Accompanying drawing is the structural representation of combined little resistance safety check.
This combined little resistance safety check comprises that an intake pipe 8 safety valve 7 is installed on the water outlet pipeline section 9 of little resistance elastomeric check valve 3, the outlet pipe 2 of safety valve 7 is installed on the water inlet segment 1 of little resistance elastomeric check valve 3, on safety valve 7 water outlets and little by-pass pipe 6 that little resistance elastomeric check valve 3 water inlet segments 1 are connected a little safety check 5 is installed, the installation direction of little safety check 5 is that the water outlet of its water intake attachment security valve 7 constitutes.Little resistance elastomeric check valve 3 is through identical flanged (FLGD) gradually expanding shape water inlet segment 1, convergent shape water outlet pipeline section 9, flaring change convergent place is provided with a valve body that gusset constituted 4 by its diameter in pipe by two-port, on gusset, be provided with screw, linking two smaller part garden shape valve plates that iron plate is formed 14 to one by garden shape offset plate with press strip 10 and screw 11 is fixed on the gusset of valve body 4, on the shape iron plate of smaller part garden, be provided with position limiting pile 13, in the upper end of position limiting pile 13 permanent magnet 12 be housed and constitute.The material of position limiting pile 13 is a nonmagnetic substance.
During use this combined little resistance safety check is installed on the water supply line, open water supplying pump (vapour or oil), the valve plate of little resistance safety check is subjected to the thrust of current and opens, two smaller part garden shape iron plates are maintained a certain distance to be held, current are unimpeded, realize little resistance; This moment, the water of little resistance safety check water inlet segment can not enter safety valve from little by-pass pipe because of the effect that little safety check is arranged, and the water of little resistance safety check water outlet pipeline section can not enter safety valve.When pump shutdown, the valve plate of little resistance safety check is closed rapidly under the elasticity return force function of refluence water and offset plate automatically, realizes non-return.When refluence hydraulic pressure surpassed regulation numerical value, safety valve was opened automatically, and fraction refluence water flows back to the water inlet segment of little resistance safety check through the outlet pipe of the water outlet of safety valve, little safety check and safety valve, realizes the earial drainage decompression, the protection pipeline.
Claims (2)
1. combined little resistance safety check that comprises that little resistance safety check, safety valve, little safety check and little by-pass pipe are constituted, it is characterized in that: safety valve is installed on little resistance safety check, the intake pipe of safety valve is installed on little resistance safety check water outlet pipeline section, and the outlet pipe of safety valve is connected on little resistance safety check water inlet segment.
2. combined little resistance safety check according to claim 1 is characterized in that: little safety check is housed on the little by-pass pipe, and the installation direction of its little safety check is the water outlet of the water intake attachment security valve of little safety check.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99202513 CN2379668Y (en) | 1999-01-23 | 1999-01-23 | Combination and low resistance type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99202513 CN2379668Y (en) | 1999-01-23 | 1999-01-23 | Combination and low resistance type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2379668Y true CN2379668Y (en) | 2000-05-24 |
Family
ID=33997935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99202513 Expired - Fee Related CN2379668Y (en) | 1999-01-23 | 1999-01-23 | Combination and low resistance type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2379668Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345305A (en) * | 2011-10-14 | 2012-02-08 | 浙江省疏浚工程股份有限公司 | Remote serially-connected booster pump station system |
| CN106838383A (en) * | 2017-01-19 | 2017-06-13 | 陈银周 | The reverse pressure release type of one master-slave type is noiseless check-valves |
| CN108662213A (en) * | 2018-06-26 | 2018-10-16 | 珠海格力电器股份有限公司 | Check-valves and its ventilation equipment |
| CN110686106A (en) * | 2019-11-28 | 2020-01-14 | 谢淑娥 | Safety valve with advance safeguard function |
-
1999
- 1999-01-23 CN CN 99202513 patent/CN2379668Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345305A (en) * | 2011-10-14 | 2012-02-08 | 浙江省疏浚工程股份有限公司 | Remote serially-connected booster pump station system |
| CN106838383A (en) * | 2017-01-19 | 2017-06-13 | 陈银周 | The reverse pressure release type of one master-slave type is noiseless check-valves |
| CN108662213A (en) * | 2018-06-26 | 2018-10-16 | 珠海格力电器股份有限公司 | Check-valves and its ventilation equipment |
| CN110686106A (en) * | 2019-11-28 | 2020-01-14 | 谢淑娥 | Safety valve with advance safeguard function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |