CN205903727U - Filter with rectifier - Google Patents

Abstract

The utility model provides a filter with rectifier goes up to accompany in the middle of cavity and the cavity down and sealedly fills up and link to each other through the bolt, and the intake pipe links to each other with the inner chamber and be together fixed with last cavity, installs the filter core on the inner chamber, and the outlet duct is together fixed with last cavity, and manifold pressure gage is installed respectively and the manometer of giving vent to anger to installation rectification pipe tied in a bundle in the outlet duct on intake pipe and outlet duct, installs the blowoff valve under on the cavity. To combine rectifier and filter constitute the rectification filter of integration together, and size when having reduced them and installing has respectively reduced subassembly cost and installation cost, has improved work efficiency, has guaranteed gas flowmeter long -term measuring stability of volume and accuracy.

Description

A kind of filter with rectifier

Technical field

The utility model is related to a kind of gas flow surveying instrument, in particulars relate to before one kind is installed on flowmeter straight length Pneumatic filter.

Background technology

Flowmeter commonly uses in the measurement of gas flow now, but the meter to flowmeter for the fluidised form of air in pipeline Accuracy of measurement impact is very big, and the requirement to straight length for the general flowmeter is that length is 10d before flowmeter, and after flowmeter, length is 5d(d is straight length pipe diameter), the requirement in front and back's straight length for some velocity flowmeters is longer.But some occasions not foot Enough space mounting straight lengths, this is accomplished by installing rectifier before flowmeter, has both decreased the length of straight length, protects again Demonstrate,prove the measuring accuracy of flowmeter.

In the measurement of gas flow, in order to ensure long-time stability and the accuracy of flowmeter metering, in flowmeter upstream Pneumatic filter will be installed additional, the particulate matter in gas, dust and moisture are filtered it is ensured that flowmeter is not subject to the impurity in gas Impact.But gas can produce the fluidised forms such as bias current, whirlpool, the measuring accuracy of impact flowmeter, such as [0002] after filter Described, need to install rectifier additional again, which again increases installation procedure and cost.

Content of the invention

According to current gas flowmeter exist problem, the utility model provide a kind of compact conformation Dian installation cost low and Guarantee gas flowmeter long-term measurement have good stability and accuracy be installed on flowmeter straight length before gas mistake Filter.

The concrete technical scheme that the utility model is adopted is: a kind of filter with rectifier it is characterised in that: on Cavity 3 and lower chamber 11 are sandwiched between sealing gasket 9 and are connected by bolt 8, and air inlet pipe 1 is connected with inner chamber 4 and solid with upper cavity 3 It is scheduled on together, filter core 10 is installed on inner chamber 4, escape pipe 6 is fixed together with upper cavity 3, escape pipe 6 is installed rectification collection Beam tube 7, is respectively mounted the gentle pressure gauge 5 of boost gauge 2 in air inlet pipe 1 and escape pipe 6, the row of installation on lower chamber 11 Dirty valve 12.

The beneficial effects of the utility model

Rectifier and filter are organically combined the rectification filter of being integrally formed, reduce them and pacify respectively Size during dress, reduces assembly cost and installation cost, improves operating efficiency it is ensured that the measurement of gas flow measures for a long time Stability and accuracy.

Brief description

Fig. 1 is the utility model structural representation.

In figure 1. admission line, 2. inlet pressure table, 3. upper cavity, 4. inner chamber, 5. outlet pressure table, 6. go out Tracheae, 7. bundle pipes, 8. bolt, 9. sealing gasket, 10. filter core, 11. lower chambers, 12. blowoff valves.

Specific embodiment

And combine accompanying drawing technical solution of the present invention is further described.

Embodiment 1: a kind of filter with rectifier, as shown in figure 1, upper cavity 3 and lower chamber 11 be sandwiched between close Packing 9 is simultaneously connected by bolt 8, and air inlet pipe 1 is connected with inner chamber 4 and is welded and fixed together with upper cavity 3, pacifies on inner chamber 4 Dress filter core 10, escape pipe 6 is welded and fixed together with upper cavity 3, and the air inlet pipe 1 of filter and the bore of escape pipe 6 are 25mm. Rectification bundle pipes 7 are installed in escape pipe 6, the caliber of bundle pipes 7 is 4～5mm, bundle pipes 7 length 50mm, 19 stainless steel tubes Composition, is booked escape pipe 6.Bundle pipes 7 length is 1～3 times of admission line 1 and outlet pipe 2 bore, in air inlet pipe 1 with go out Inlet pressure table 2 and gas port pressure gauge 5 are respectively mounted on tracheae 6, blowoff valve 12 is installed on lower chamber 11.

It is flowed in inner chamber 4 when gas flows through admission line 1, downwardly in filter core 10, gas is through filtration core 10 Filter screen or filter cloth enter in the exocoel being made up of upper cavity 3 and lower chamber 11, and the dust containing in gas or moisture fall into down In cavity 11, the particulate matter in gas falls in the bottom of filter core 10, and gas flows out from escape pipe 6 after flowing through bundle pipes 7 rectification.When After filter work a period of time, the particulate matter saved bit by bit in filter core 10 reaches to a certain degree or filter screen or filter cloth local stoppages arrive After to a certain degree, inlet pressure gauge 2 and delivery gauge 5 produce pressure reduction, after pressure reduction reaches the limitation, open blowoff valve 12 by liquid Body or dust are discharged, if pressure reduction does not reduce, filter core 10 is taken out cleaning or changes by bolt 8 of dismantling.

Embodiment 2: the air inlet pipe 1 of filter and the bore of escape pipe 6 are 100mm.Rectification boundling is installed in escape pipe 6 Pipe 7, the caliber of bundle pipes 7 is 8～10mm, bundle pipes 7 length 150mm, 80 ~ 90 stainless steel tube compositions, is booked escape pipe 6. Other are with embodiment 1.

Embodiment 3: the air inlet pipe 1 of filter and the bore of escape pipe 6 are 300mm.Rectification boundling is installed in escape pipe 6 Pipe 7, the caliber of bundle pipes 7 is 10～20mm, bundle pipes 7 length 300mm, 190 ~ 200 stainless steel tube compositions, is booked and gives vent to anger Pipe 6.Other are with embodiment 1.

Claims (1)

1. a kind of filter with rectifier it is characterised in that: upper cavity (3) and lower chamber (11) are sandwiched between sealing gasket (9) and by bolt (8) it is connected, air inlet pipe (1) is connected with inner chamber (4) and is fixed together with upper cavity (3), in inner chamber (4) Upper installation filter core (10), escape pipe (6) is fixed together with upper cavity (3), installs rectification bundle pipes (7) in escape pipe (6), Air inlet pipe (1) and escape pipe (6) are respectively mounted the gentle pressure gauge of boost gauge (2) (5), in the upper peace of lower chamber (11) Dress blowoff valve (12).