CN207395829U - Piston-type flow-meter - Google Patents
Piston-type flow-meter Download PDFInfo
- Publication number
- CN207395829U CN207395829U CN201721409246.XU CN201721409246U CN207395829U CN 207395829 U CN207395829 U CN 207395829U CN 201721409246 U CN201721409246 U CN 201721409246U CN 207395829 U CN207395829 U CN 207395829U
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- Prior art keywords
- piston
- magnetic ring
- bent axle
- output shaft
- cover
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Abstract
The utility model is related to a kind of piston-type flow-meters, and including housing, upper cover, lower cover, piston, bent axle, distributing valve, there are four the piston cylinders with the cooperation of piston dynamic sealing for housing cavity system；Magnetic coupling transmission device mainly between output shaft and bent axle is set, output shaft dynamic sealing is converted into static seal, ring wear is avoided and generates leakage phenomenon；Flow regulator is set in a wherein cavity between piston and side cover；Flow-rate adjustment is reached by the movement travel of regulating piston.Have the characteristics that sealing performance is reliable, flow measurement precision is high.Suitable for oiling machine flow meter.
Description
Technical field
The utility model belongs to flow-meter, especially with respect to a kind of piston-type flow-meter.The utility model is applicable in
In oiling machine flow meter.
Background technology
Piston-type flow-meter is commonly used to the flow measurement of fuel charger, and structure includes housing, upper cover, lower cover, piston, song
Axis, distributing valve, housing cavity system is there are four the piston cylinder with the cooperation of piston dynamic sealing, and four piston cylinders are in bent axle pivot
Circumferencial direction is uniformly distributed on the vertical plane of line, and piston is connected by connecting rod with bent axle, and piston rodless cavity passes through distributing valve and upper cover
On inlet and outlet connection, side cover is installed on the housing on the outside of piston cylinder, upper lid is equipped with the output shaft with crankshaft-synchronous rotation, leads to
It crosses to output shaft revolution counter, realizes flow measurement；Its major defect is：The output shaft periphery of existing piston-type flow-meter with
All coordinated between upper cover using O-ring seal dynamic sealing, the high speed rotation of output shaft easily generates abrasion to sealing ring, causes close
Sealing property declines or even leaks；In addition, each product piston cylinder embedded SMA actuators size causes piston type stream there are error
The measurement error of gauge.
The content of the invention
The purpose of this utility model is to provide that a kind of sealing performance is reliable, measuring accuracy for shortcoming existing in the prior art
High piston-type flow-meter.
The technical solution of the utility model includes housing, upper cover, lower cover, piston, bent axle, distributing valve, and housing cavity is formed with
Four piston cylinders coordinated with piston dynamic sealing, four piston cylinders circumferencial direction on the vertical plane of bent axle rotation centerline are equal
Even distribution, piston are connected by link assembly with bent axle, and piston rodless cavity is connected by distributing valve with the inlet and outlet on upper lid, point
It is fixedly mounted on valve on bent axle, side cover is installed on the housing on the outside of piston cylinder, upper lid is equipped with defeated with crankshaft-synchronous rotation
Shaft；Magnetic coupling transmission device is set mainly between output shaft and bent axle, wherein a sky between piston and side cover
Intracavitary sets flow regulator；The magnetic coupling transmission device is made of outer magnetic ring, internal magnetic ring, separation sleeve, outside outer magnetic ring
Cylindrical surface is inlaid in outer magnetic ring set inner wall, and outer magnetic ring set lower end is fixedly connected with distributing valve, and outer magnetic ring covers and distributing valve and bent axle
Concentric rotation, separation sleeve upper surface is by gland fixing seal in upper cover upper surface, separation sleeve external cylindrical surface and outer magnetic ring
Interporal lacuna coordinates, and internal magnetic ring endoporus is fixedly mounted on output shaft lower end periphery, between internal magnetic ring periphery and separation sleeve internal chamber wall
Gap coordinates, and in the middle part of output shaft by axle sleeve location and installation in gland centre bore, the upper end, which is stretched out, presses cover upper planar surface, outside output shaft
Bearing is set between disc and separation sleeve；The flow regulator is made of the adjusting rod of one end threaded, adjusting rod band spiral shell
Line one end is stretched into piston rodless cavity, and adjusting rod non-threaded one end is connected with adjusting handle, screw thread and the side cover screw hole of adjusting rod
It cooperates, adjusting rod non-threaded position external cylindrical surface coordinates with side cover hole wall dynamic sealing, is set between adjusting handle and side cover
Put locking device.
The utility model has the advantages that magnetic coupling transmission device is set between output shaft and bent axle, by output shaft dynamic sealing
Static seal is converted into, ring wear is avoided and generates leakage phenomenon；It is set in a wherein cavity between piston and side cover
Flow regulator is put, flow-rate adjustment is reached by the movement travel of regulating piston.With sealing performance is reliable, flow measurement is smart
Spend the features such as high.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
Piston-type flow-meter as shown in Figure 1, including housing 6, upper cover 22, lower cover 1, piston 7, bent axle 4, distributing valve 20,
6 inner cavity system of housing is there are four the piston cylinder 10 with the cooperation of 7 dynamic sealing of piston, and four piston cylinders 10 are in 4 rotation centerline of bent axle
Vertical plane on circumferencial direction be uniformly distributed, piston 7 is connected by link assembly 11 with bent axle 4, and 7 rodless cavity of piston passes through distribution
Valve 20 is connected with the inlet and outlet in upper cover 22, and distributing valve 20 is fixedly mounted on bent axle 4, and distribution valve seat 15 is by screw 17 and locking
Nut 19 is fixedly mounted in housing 6, is installed side cover 8 on the housing 6 in 10 outside of piston cylinder, is set and seal in side cover 8 and housing 6
Circle 5, upper cover 22 are equipped with output shaft 28 with 4 synchronous rotary of bent axle, and bent axle 4 includes upper shaft and lower rotary shaft, thereon shaft with
It is equipped between housing 6 between 13 lower rotary shaft of Upper shaft sleeve and lower cover 1 and is equipped with Lower shaft sleeve 3, set between the lower face of lower rotary shaft and housing 6
There is steel ball 2；Magnetic coupling transmission device is set between output shaft 28 and bent axle 4, wherein between a piston 7 and side cover 8
Flow regulator is set in cavity；The magnetic coupling transmission device is made of outer magnetic ring 23, internal magnetic ring 24, separation sleeve 25, outside
The external cylindrical surface of magnet ring 23 is inlaid in outer magnetic ring and covers 18 inner walls, and outer magnetic ring covers 18 lower ends and is fixedly connected with distributing valve 20, outer magnetic ring
It covers 18 lower part small cylindrical surfaces and moves cooperation with the location hole inside upper cover 22, outer magnetic ring covers 18 lower part small columns and 20 upper end of distributing valve
It is fixedly connected between the centre bore of face using connecting shaft 16, bullet is set between outer magnetic ring covers 20 upper surface of 18 lower faces and distributing valve
The upper shaft of spring 21 and spring capping 12, outer magnetic ring set 18 and distributing valve 20 and bent axle 4, lower rotary shaft are concentric, 25 upper end of separation sleeve
Face is mounted on 22 upper surface of upper cover, 25 external cylindrical surface of separation sleeve and 24 endoporus clearance fit of outer magnetic ring by 26 fixing seal of gland,
24 endoporus of internal magnetic ring is fixedly mounted on 28 lower end periphery of output shaft, and 24 periphery of internal magnetic ring is matched somebody with somebody with 25 internal chamber wall gap of separation sleeve
It closes, by 27 location and installation of axle sleeve in 26 centre bore of gland, pressure cover upper planar surface, output shaft are stretched out in the upper end at output shaft 28 middle part
Bearing 14 is set between 28 peripheries and separation sleeve 25；The flow regulator is made of the adjusting rod 9 of one end threaded, is adjusted
9 threaded one end of pole is stretched into 7 rodless cavity of piston, and 9 non-threaded one end of adjusting rod is connected with adjusting handle, the spiral shell of adjusting rod 9
Line cooperates with 8 screw hole of side cover, and 9 non-threaded position external cylindrical surface of adjusting rod coordinates with 8 hole wall dynamic sealing of side cover, passes through rotation
Adjusting handle adjusts the distance between adjusting rod 9 and 7 end face of piston, changes the stroke of piston 7, realizes flow-rate adjustment, adjusting
Locking device is set between section handwheel and side cover 8, the locking device is using the lock pin on adjusting handle and the lockhole phase on side cover 8
Mutually cooperation, the position of lock adjustment handwheel.
Claims (1)
1. a kind of piston-type flow-meter, including housing（6）, upper cover（22）, lower cover（1）, piston（7）, bent axle（4）, distributing valve
（20）, housing（6）There are four inner cavity systems and piston（7）The piston cylinder of dynamic sealing cooperation（10）, four piston cylinders（10）In song
Axis（4）Circumferencial direction is uniformly distributed on the vertical plane of rotation centerline, piston（7）Pass through link assembly（11）With bent axle（4）Even
It connects, piston（7）Rodless cavity passes through distributing valve（20）With upper cover（22）On inlet and outlet connection, distributing valve（20）It is fixedly mounted on song
Axis（4）On, piston cylinder（10）The housing in outside（6）Upper installation side cover（8）, upper cover（22）It is equipped with and bent axle（4）Synchronous rotary
Output shaft（28）；It is characterized in that in output shaft（28）With bent axle（4）Between magnetic coupling transmission device is set, a work wherein
Plug（7）With side cover（8）Between cavity in set flow regulator；The magnetic coupling transmission device is by outer magnetic ring（23）, it is interior
Magnet ring（24）, separation sleeve（25）Composition, outer magnetic ring（23）External cylindrical surface be inlaid in outer magnetic ring set（18）Inner wall, outer magnetic ring set
（18）Lower end and distributing valve（20）It is fixedly connected, outer magnetic ring set（18）And distributing valve（20）With bent axle（4）Upper shaft, lower rotary shaft
With one heart, separation sleeve（25）Upper surface is by gland（26）Fixing seal is mounted on upper cover（22）Upper surface, separation sleeve（25）Outside cylinder
Face and outer magnetic ring（23）Endoporus clearance fit, internal magnetic ring（24）Endoporus is fixedly mounted on output shaft（28）Lower end periphery, interior magnetic
Ring（24）Periphery and separation sleeve（25）Internal chamber wall clearance fit, output shaft（28）Middle part passes through axle sleeve（27）Location and installation is being pressed
Lid（26）In centre bore, gland is stretched out in the upper end（26）Upper plane, output shaft（28）Periphery and separation sleeve（25）Between set
Bearing（14）；The flow regulator by one end threaded adjusting rod（9）Composition, adjusting rod（9）Threaded one end is stretched into
Piston（7）In rodless cavity, adjusting rod（9）Non-threaded one end is connected with adjusting handle, adjusting rod（9）Screw thread and side cover（8）Spiral shell
Hole cooperates, adjusting rod（9）Non-threaded position external cylindrical surface and side cover（8）Hole wall dynamic sealing coordinates, in adjusting handle and side
Lid（8）Between locking device is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721409246.XU CN207395829U (en) | 2017-10-30 | 2017-10-30 | Piston-type flow-meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721409246.XU CN207395829U (en) | 2017-10-30 | 2017-10-30 | Piston-type flow-meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207395829U true CN207395829U (en) | 2018-05-22 |
Family
ID=62327000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721409246.XU Active CN207395829U (en) | 2017-10-30 | 2017-10-30 | Piston-type flow-meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207395829U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044433A (en) * | 2019-05-30 | 2019-07-23 | 浙江麦得机器有限公司 | Flowmeter with cavity volume compensation device |
| CN110375820A (en) * | 2019-06-13 | 2019-10-25 | 广东恒精机械有限公司 | Twin-rotor housing interactive mode hydraulic metering units |
-
2017
- 2017-10-30 CN CN201721409246.XU patent/CN207395829U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044433A (en) * | 2019-05-30 | 2019-07-23 | 浙江麦得机器有限公司 | Flowmeter with cavity volume compensation device |
| CN110375820A (en) * | 2019-06-13 | 2019-10-25 | 广东恒精机械有限公司 | Twin-rotor housing interactive mode hydraulic metering units |
| CN110375820B (en) * | 2019-06-13 | 2021-09-17 | 广东恒精机械有限公司 | Double-cylinder interactive hydraulic metering device |
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