CN2047720U - Liquid filling gun with constant pressure - Google Patents
Liquid filling gun with constant pressure Download PDFInfo
- Publication number
- CN2047720U CN2047720U CN 89206371 CN89206371U CN2047720U CN 2047720 U CN2047720 U CN 2047720U CN 89206371 CN89206371 CN 89206371 CN 89206371 U CN89206371 U CN 89206371U CN 2047720 U CN2047720 U CN 2047720U
- Authority
- CN
- China
- Prior art keywords
- liquid filling
- fluid injection
- differential piston
- rifle body
- injection gun
- 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.)
- Withdrawn
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Abstract
The utility model discloses a liquid filling gun with constant pressure which is suitable for single hydraulic props of coal mines, comprising a liquid filler mouth, a clamping ring, a liquid inlet pipe, a body, a differential piston, a controlling ejector rod, an adjusting nut, a hand appliance, a spring, etc. The differential piston is used to lock the controlling ejector rod to turn on the liquid filling valve, with a mechanical lock mode, and when the setting load of the single hydraulic prop reaches a specified value, the differential piston automatically relieve the lock through the hydraulic pressure difference and turn off the liquid filling valve. The liquid filling can also be turned off through hand operation. The liquid filling gun with constant pressure of the utility model can adjust the spring force through the adjusting nut and can adjust the setting load of the single hydraulic prop.
Description
The utility model is a kind of constant voltage fluid injection gun, particularly relates to the fluid injection gun that the colliery hydraulic prop is used.
At present, the prior art with immediate this technical field of the utility model is disclosed a kind of assurance setting load fluid injection gun in CN87210120U.It mainly is by liquid injecting mouth, compositions such as feed tube, rifle body, long hoop, spring assembly, the spool of offering the hole, gimbal, high pressure chest, low pressure chamber.The weak point of this assurance support force fluid injection gun is the influence that the setting load of pillar is subjected to pumping plant pressure, promptly fluctuate with the fluctuation of pumping plant pressure, thereby the setting load of each pillar still can not satisfy theoretic uniformity on the work plane.Owing to damping hole is arranged in its control valve special, thereby flow is little, influence pillar on open speed.Its complex structure is made difficulty, and volume, weight are big, the cost height.The support force of single-column of this fluid injection gun is non-adjustable in addition.
The purpose of this utility model is to overcome above-mentioned weak point of the prior art, can press support force of single-column identical by bonding body fluid and provide a kind of, not influenced by the pumping plant pressure oscillation, simple in structure, easily manufactured, cost is low, and the adjustable constant voltage fluid injection gun of support force of single-column.
The utility model is by snap ring, gunlock, the rifle body, seal, liquid injecting mouth, feed tube, differential piston, spring, baffle plate, adjusting nut, the control push rod, compositions such as feed liquor valve, liquid injecting mouth, feed tube, adjusting nut respectively with rifle body thread connection, the connection place liner has seal, the feed liquor valve is housed above feed tube, in the vertical hole of rifle body, be provided with the control push rod of ladder, the two ends of control push rod contact with the feed liquor valve with gunlock respectively, in the transverse holes of rifle body, be provided with and the affixed all-in-one-piece differential piston of baffle plate, between baffle plate and adjusting nut, spring be housed.
The utility model constant voltage fluid injection gun has following advantage: simple in structure, easily manufactured, cost is low, can guarantee that the setting load of pillar is identical, and the setting load of pillar is adjustable, prevents the early stage absciss layer caving of top board accident, guarantees the safety in production in colliery.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of constant voltage fluid injection gun.
The utility model constant voltage fluid injection gun comprises snap ring 2, gunlock 4, rifle body 12, liquid injecting mouth 1 with rifle body 12 difference thread connection, feed tube 15, adjusting nut 8, there are seal 3,14,11 in connection place liner respectively, feed liquor valve 13 is housed above feed tube 15, be provided with the control push rod 5 of ladder in the vertical hole of rifle body 12, the two ends of control push rod 5 contact with feed liquor valve 13 with gunlock 4 respectively, are provided with in the transverse holes of rifle body 12 and baffle plate 6 affixed all-in-one-piece differential pistons 9, one end of differential piston 9 is equipped with hand gear 10, is provided with spring 7 between baffle plate 6 and adjusting nut.
During setting prop, the liquid injecting mouth 1 of fluid injection gun is inserted in the triple-use valve of hydraulic prop,, feed tube 15 is connect the feed pipe of pumping plant with snap ring 2 chuckings.Move gunlock 4, control push rod 5 moves down, and feed liquor valve 13 is opened feed liquor, simultaneously under the effect of spring 7 elastic force, differential piston 9 is moved to the left, enter the ladder of control push rod 5, locking control push rod 5, thereby after unclamping gunlock 4, feed liquor valve 13 still is in opening, when the setting load of pillar did not reach setting, feed liquor valve 13 was in opening always, carried out fluid injection.When the setting load of pillar reached setting, baffle plate 6 overcame spring force under the effect of both sides pressure differential (area difference on both sides is the cross section of differential piston), differential piston 9 is moved right, control push rod 5 upwards resets, and feed liquor valve 13 cuts out, and stops fluid injection.
Open in the fluid injection process at feed liquor valve 13, stop fluid injection as need, can differential piston 9 be moved right by handling hand gear 10, control push rod 5 resets, and feed liquor valve 13 cuts out, and stops fluid injection.
The utility model constant voltage fluid injection gun can be adjusted the size of spring 11 elastic force by adjusting nut 9, thereby reach the size of adjustable prop setting load.In the application, mix up behind the support force of single-column and generally no longer transfer.
Claims (2)
1, a kind of constant voltage fluid injection gun particularly relates to the constant voltage fluid injection gun that the colliery hydraulic prop is used, and this fluid injection gun is by snap ring.Compositions such as seal, gunlock, rifle body, liquid injecting mouth, feed tube, feed liquor valve.It is characterized in that: in the vertical hole of rifle body, be provided with the control push rod that has ladder that contacts with gunlock with the feed liquor valve, in the transverse holes of rifle body, be provided with and the affixed all-in-one-piece differential piston of baffle plate.Between baffle plate and adjusting nut, spring is housed, adjusting nut and rifle body thread connection.
2, constant voltage fluid injection gun according to claim 1 is characterized in that an end of differential piston is equipped with hand gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206371 CN2047720U (en) | 1989-04-22 | 1989-04-22 | Liquid filling gun with constant pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206371 CN2047720U (en) | 1989-04-22 | 1989-04-22 | Liquid filling gun with constant pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2047720U true CN2047720U (en) | 1989-11-15 |
Family
ID=4863430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89206371 Withdrawn CN2047720U (en) | 1989-04-22 | 1989-04-22 | Liquid filling gun with constant pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2047720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101627213B (en) * | 2007-03-05 | 2013-05-22 | 舍弗勒技术股份两合公司 | Hydraulic system |
-
1989
- 1989-04-22 CN CN 89206371 patent/CN2047720U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101627213B (en) * | 2007-03-05 | 2013-05-22 | 舍弗勒技术股份两合公司 | Hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |