CN202170876U - Novel random-recycling check valve - Google Patents
Novel random-recycling check valve Download PDFInfo
- Publication number
- CN202170876U CN202170876U CN2011200649466U CN201120064946U CN202170876U CN 202170876 U CN202170876 U CN 202170876U CN 2011200649466 U CN2011200649466 U CN 2011200649466U CN 201120064946 U CN201120064946 U CN 201120064946U CN 202170876 U CN202170876 U CN 202170876U
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- main valve
- piston cylinder
- holes
- 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 - Fee Related
Links
Images
Landscapes
- Check Valves (AREA)
Abstract
The utility model relates to a novel random-recycling check valve, comprising a main valve and a throttling valve, wherein a by-pass pipe is connected with the main valve body; the throttling valve is arranged in the by-pass pipe. The main valve adopts a swing check valve and the throttling valve adopts a piston switch device. The piston switch device is composed of a piston cylinder vertically arranged on the by-pass pipe, a piston body fitting the piston cylinder in a sealing manner and a piston rod fixedly connected with the piston body; through holes communicated with the inner chamber of the main valve and the by-pass pipe are manufactured on the piston cylinder; inner holes fitting the through holes of the piston cylinder are manufactured on the piston body; the inner holes of the piston body and the through holes of the piston cylinder are aligned on the condition that the main valve is closed. The piston rod is connected with a valve shaft of the main valve by a connecting rod mechanism. The novel random-recycling check valve has the advantages of large flow area, small flow resistance, convenience for regulation, easy machining, small volume and the like, so that it is suitable for protective valves of the water pump outlet.
Description
Technical field
The utility model relates to valve field, particularly about a kind of safety check.The utility model is applicable to the protection valve of exit of pump.
Background technique
In the outlet of the feed water pump of boiler equal pressure container, for preventing to damage pumping unit, need safety check be installed in the outlet of water pump, and when closure of check ring, the water pump circulation canal be provided to aqueous reflux, prevent the water pump overload operation and burn out.So-called water pump circulation canal by with safety check close and the throttle valve opened form, this throttle valve and check valve set synthesize the recirculation safety check.
Existing recirculation safety check at random; Main valve adopts lifting structure, and the throttle valve in the circulation canal adopts post rod type or mouse cage type structure, when main valve is closed; Linkage mechanism through being connected with main valve is opened throttle valve; Open the water pump circulation canal, the water of exit of pump is refluxed through the water pump circulation canal, prevent that water pump from damaging.One of its shortcoming is that main valve adopts the lifting structure flow resistance big, and spring is inner at flap, is difficult for field adjustable; Two of its shortcoming is little, the poor sealing performances of the flow of post rod type throttle valve, and the volume of squirrel-cage throttle valve is big, difficulty of processing is high.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, provides that a kind of flow resistance is little, easy to adjust, easy processing, the novel safety check of recirculation at random that volume is little.
The technological scheme of the utility model comprises main valve and throttle valve, connects a by-pass line on the valve body of main valve, in this by-pass line throttle valve is set.Mainly be that main valve adopts Swing check valve, throttle valve adopts the piston-type switch device.Said piston-type switch device is made up of piston body that is vertically mounted on piston cylinder on the by-pass line, is sealed and matched with piston cylinder and the piston rod that is fixedly connected with piston body; Be shaped on the through hole that is communicated with main valve inner chamber and by-pass line on the piston cylinder; Be shaped on the endoporus that cooperatively interacts with the piston cylinder through hole on the piston body, the piston body endoporus aligns with the piston cylinder through hole under the main valve closed condition.Piston rod is connected with the valve shaft of main valve through linkage mechanism.
The utility model has the advantages that main valve adopts the Swing check valve structure, throttle valve adopts the piston-type switch device, and its circulation area is big, flow resistance is little, and is easy to adjust, easy processing, and volume is little.
Description of drawings
Fig. 1 is the structure cut-away view of the utility model.
Embodiment
The novel safety check of recirculation at random as shown in Figure 1 comprises main valve and throttle valve, connects a by-pass line on the valve body 1 of main valve, in this by-pass line throttle valve is set.Main valve adopts Swing check valve, is made up of valve body 1, flap 2, valve gap 3 and valve shaft 4.Throttle valve adopts the piston-type switch device; Said piston-type switch device is made up of piston body that is vertically mounted on piston cylinder on the by-pass line, is sealed and matched with piston cylinder and the piston rod 5 that is fixedly connected with piston body; Be shaped on the through hole that is communicated with main valve inner chamber and by-pass line on the piston cylinder; Be shaped on the endoporus that cooperatively interacts with the piston cylinder through hole on the piston body, the piston body endoporus aligns with the piston cylinder through hole under the main valve closed condition, and the main valve inner chamber is communicated with by-pass line; Aqueous medium is refluxed from by-pass line by pump discharge, form circulation canal.Piston rod 5 is connected with the valve shaft 4 of main valve through linkage mechanism 6.When main valve was opened, flap 2 rotarily opened with valve shaft 4, and circulation area is big, flow resistance is little.Simultaneously, valve shaft 4 kinematic link mechanisms 6 promote piston rod 5 and make piston body endoporus and piston cylinder through hole closed condition.Piston body below mounting spring, and on the piston cylinder of spring lower end the install adjustment plug screw, the flap 2 of main valve can be closed rapidly when water pump is shut down.
Claims (1)
1. the novel safety check of recirculation at random comprises main valve and throttle valve, and the valve body of main valve (1) is gone up and connected a by-pass line, in this by-pass line throttle valve is set; It is characterized in that main valve adopts Swing check valve, throttle valve adopts the piston-type switch device; Said piston-type switch device is made up of piston body that is vertically mounted on piston cylinder on the by-pass line, is sealed and matched with piston cylinder and the piston rod (5) that is fixedly connected with piston body; Be shaped on the through hole that is communicated with main valve inner chamber and by-pass line on the piston cylinder; Be shaped on the endoporus that cooperatively interacts with the piston cylinder through hole on the piston body; The piston body endoporus aligns with the piston cylinder through hole under the main valve closed condition, and piston rod (5) is connected with the valve shaft (4) of main valve through linkage mechanism (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200649466U CN202170876U (en) | 2011-03-09 | 2011-03-09 | Novel random-recycling check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200649466U CN202170876U (en) | 2011-03-09 | 2011-03-09 | Novel random-recycling check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202170876U true CN202170876U (en) | 2012-03-21 |
Family
ID=45829072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200649466U Expired - Fee Related CN202170876U (en) | 2011-03-09 | 2011-03-09 | Novel random-recycling check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202170876U (en) |
-
2011
- 2011-03-09 CN CN2011200649466U patent/CN202170876U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101709799B (en) | Multifunctional sleeve type energy dissipation valve | |
| CN204226809U (en) | A kind of stop valve structure | |
| CN201650709U (en) | Hydraulic control valve | |
| CN203009946U (en) | Water hammer discharge valve | |
| CN204201184U (en) | Hydraulic lifting system flameproof apparatus | |
| CN207145722U (en) | A kind of water attack release valve | |
| CN103047457A (en) | Water hammer discharge valve | |
| CN202170876U (en) | Novel random-recycling check valve | |
| CN103836237B (en) | Fusiformis is adjustable non-return valve | |
| CN206017914U (en) | A kind of lift check valve with flow control function | |
| CN208281515U (en) | A kind of buffer butterfly valve with multistage adjustable damping device | |
| CN205136709U (en) | Mechanical type multi -function control valve | |
| CN110388484B (en) | Swing check valve | |
| CN206708536U (en) | Compact Direct Action Type water attack release valve | |
| CN204114247U (en) | A kind of Swing check valve of self-balancing pressure | |
| CN104180029A (en) | Screwing opening type check valve capable of balancing pressure automatically | |
| CN201322016Y (en) | Oil pipe explosion-proof device | |
| CN204042151U (en) | A kind of speed closes stop valve | |
| CN106870815A (en) | Balanced type Direct Action Type water attack release valve | |
| CN201554635U (en) | Multifunctional self-operated sleeve-type energy dissipating valve | |
| CN202252162U (en) | Slowly-closing rubber flap check valve | |
| CN208749704U (en) | A kind of speed governing valve | |
| CN201891144U (en) | Combined multifunctional pump control energy saving valve | |
| CN201925534U (en) | Metal seal check valve with wide-angle sloping plate | |
| CN202451900U (en) | Right-angle quick closing check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20190309 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |