Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pulse back-flushing valve

A technology of pulse blowback and disc, which is applied in the direction of control valves, valve devices, functional valve types, etc., can solve the problems of high valve assembly accuracy, inconvenient disassembly and maintenance, poor sealing reliability, etc., to achieve good sealing performance and maintenance Easy disassembly and assembly, reliable sealing effect

Inactive Publication Date: 2016-02-03
HEFEI GENERAL MACHINERY RES INST
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Engineering practice shows that there are many problems in the valves used in the existing process, the valve assembly accuracy is high, the sealing reliability of the valve is poor after long-term use, the valve stem vibrates greatly during the valve working process, the valve disc is easy to loose, and it is inconvenient to disassemble and maintain

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pulse back-flushing valve
  • Pulse back-flushing valve
  • Pulse back-flushing valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Combine below figure 1 , 2 , 3 structure and working principle of the present invention are further described:

[0029] A pulse blowback valve, in which the valve stem 12a and the valve flap 9 are mortised and fitted, and the mortise or mortise used for the mortise and mortised fit is closed, and the valve stem 12a and the valve flap 9 An elastic damping part 10 is provided at the tenon joint surface. When the blowback valve is opened, the driving device 22 drives the valve rod 12a upward through the piston rod, and the valve rod 12a drives the valve disc 9 connected with it to move upward, and the valve disc 9 leaves the valve seat 7. Because the sealing surface is a flat seal, it has the ability of quick opening. The flow characteristics, and the driving device moves quickly, thus realizing the rapid flow of medium with large flow in a short time; when the valve is closed, the driving device 22 drives the valve stem 12a down through the piston rod, and the valve ste...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of dust removal and particularly relates to a fireproof high-frequency high-temperature and high-pressure pulse back-flushing valve for conducting back-flushing cleaning on a filter element. According to the technical scheme, in the back-flushing valve, a valve rod is in mortise joint fit with a valve clack, and a mortise or a tongue-and-groove used for mortise joint fit is in a closing-in shape, and an elastic vibration damping part is arranged at the mortise joint surfaces of the valve rod and the valve clack. According to the pulse back-flushing valve, the valve rod is in mortise joint fit with the valve clack, and the elastic vibration damping part is arranged at the mortise joint surfaces of the valve rod and the valve clack, so that the valve clack has the characteristic of a check valve and the self-sealing characteristic on a flow closed condition; the valve clack and a valve seat are sealed more reliably, and the influence of the assembly quality on the sealing performance of the pulse back-flushing valve is reduced; meanwhile, the valve rod is in mortise joint fit with the valve clack, so that the problem of disengagement, caused by hard connection, of a valve rod and a valve clack in the prior is avoided. The elastic vibration damping part at the mortise joint contact surfaces of the head of the valve rod and the valve clack can remarkably relieve vibration shock of the pulse back-flushing valve on a high-frequency quick switching working condition.

Description

technical field [0001] The invention belongs to the field of dust removal, and in particular relates to a fire-proof high-frequency high-temperature and high-pressure pulse back-blowing valve for back-blowing and cleaning filter cores. Background technique [0002] In the dry pulverized coal gasification process, the syngas needs to be dry-ashed through a high-temperature and high-pressure ceramic filter. In order to realize the backflushing cleaning of the filter element, it is necessary to provide a valve that can switch frequently and quickly and generate pulsed air flow under the condition of high temperature and high pressure gas. Existing pulse blowback valves generally include a driving mechanism, a valve stem, and a valve body, wherein one end of the valve body is connected to the valve cover, the other end of the valve body is connected to the valve seat, one end of the valve stem is connected to the driving mechanism, and the other end of the valve stem is connecte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/18
CPCF16K15/18
Inventor 陈凤官王渭明友吴怀昆郭怀舟郝伟沙高红彪王勤
Owner HEFEI GENERAL MACHINERY RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com