CN206190517U - External gear pump's damping braking structure - Google Patents
External gear pump's damping braking structure Download PDFInfo
- Publication number
- CN206190517U CN206190517U CN201621216799.9U CN201621216799U CN206190517U CN 206190517 U CN206190517 U CN 206190517U CN 201621216799 U CN201621216799 U CN 201621216799U CN 206190517 U CN206190517 U CN 206190517U
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- Prior art keywords
- chamber
- gear
- external gear
- pump
- return
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- Expired - Fee Related
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Abstract
The utility model discloses an external gear pump's damping braking structure, including being located driven shaft and the gear case cover on the external gear pump, its characterized in that still includes the non return seat, is located axial ratchet that a plurality of non returns on the non return seat detained, touched with the non return lock joint, is located the inside driven external gear of axial ratchet one end, and it is internal that axial ratchet one end is located a hydro -cylinder, and the hydro -cylinder body is fixed on external gear pump's gear case cover. This practicality is to external gear pump core in the twinkling of an eye under the reversion work condition, impacts that can weaken, absorption impact force to the stable pump core that effectively prevents turns back.
Description
Technical field
This practicality is related to the technical field of pump housing brake apparatus, more particularly to a kind of damping brake of external gear rotary pump
Structure.
Background technology
When external gear rotary pump during running at high speed when shutting down suddenly, because there is pressure differential in the import and export of pump,
Outlet pressure will cause gear in piston pump or impeller to reverse more than inlet pressure, and make gear or impeller tightens nut
Loose or dislocation, causes gear or impeller failure when serious；Meanwhile, the reversion of pump causes pipeline water hammer, causes system shock, makes
Into motor and device damage, mechanical seal is caused to damage.
In order to avoid the generation of pump housing Reversion, unilateral bearing generally is installed on the rotary body of pump at this stage, this kind
Bearing arrangement normal use under low pressure operating mode, but when carrying out reverse-rotation preventing function under high voltage transient operating mode, due to moment impact
Power is lifted, and easily causes unilateral bearing to fail.
So being badly in need of a kind of moment anti-reverse-rotation structure, under moment reversing damped condition, being prevented from can be with weak while reversion
Change impact, absorb instant impact.
Utility model content
This practical purpose be exactly in order to solve prior art cannot under high voltage transient operating mode to pump core carry out stabilization have
The anti-reverse braking of effect, proposes a kind of damping brake structure of external gear rotary pump, anti-for external gear pump pump core moment
Change a job under condition, impact can be weakened, impulsive force is absorbed, and stabilization effectively prevents pump core from inverting.
To achieve the above object, this practicality proposes a kind of damping brake structure of external gear rotary pump, including positioned at outer
Driven shaft and gear box cover on intermeshing gear pump, it is characterised in that also include：
In the non-return seat of annular, non-return seat endoporus is fixedly set on driven shaft one end of external gear rotary pump；
Circumferentially the non-return fastener on non-return seat end face, spring is provided between non-return fastener and non-return seat；
Axial ratchet, described axial ratchet one end is provided with ratchet, and the other end is provided with integral type internal gear, the internal tooth
The oil through of multiple axial direction arrays is provided with the cylindrical outer wall of wheel, the axial ratchet is coaxially arranged with non-return seat, and axle
Wavy spring, ratchet and non-return fastener joint are provided between ratchet and non-return seat；
Also include being fixed on driven external gear, the driven external gear and internal tooth in the internal gear by a jackshaft
Wheel is intermeshed by the gear teeth and connected；
Include being enclosed within the cylinder body on the outside of the internal gear cylinder wall again, flange is provided with cylinder body, cylinder body leads to
Cross screw to be fixed on the gear box cover of external gear rotary pump, so as to the non-return fastener with spring and be connected to ripple spring
Axial ratchet carries out axial constraint；
The side of cylinder body is provided with the first chamber and the second chamber below first chamber of vertical distribution, described
Enclosed between the cylindrical outer wall of external gear and the internal face of cylinder body and be provided with the 3rd chamber and the 4th chamber below the 3rd chamber
Room；It is respectively arranged between the second chamber and the 4th chamber positioned at second chamber side and the first check valve for arranging vertically
With positioned at second chamber top and the second horizontally disposed check valve, the conducting direction of first check valve is from the 4th chamber
To second chamber, the conducting direction of second check valve is from second chamber to the 4th chamber；First chamber lower section and
Side is respectively arranged with the 3rd check valve that is connected with second chamber and arranged vertically and is connected with the 3rd chamber and arranged vertically
The 4th check valve, the conducting direction of the 3rd check valve be from first chamber to second chamber, the 4th check valve
Conducting direction is from the 3rd chamber to first chamber；
The other end of the driven shaft is set with sliding bearing, and the sliding bearing is arranged on a pump cover, the pump
Cover and a driving shaft for distribution parallel with the driven shaft is additionally provided between gear box cover, on the driving shaft and driven shaft
The gear being meshed is provided with, the gear exterior is provided with the pump housing, and the pump housing is fixed with the pump cover by screw and connected
Connect；Gear-box is provided between the pump housing and the gear box cover, is all provided with the driven shaft and driving shaft in the gear-box
It is equipped with ball bearing and intermeshing synchromesh gear；It is provided with driven shaft and driving shaft between the pump housing and gear-box close
Seal ring.
Preferably, the quantity of the non-return fastener is 8-9.
Preferably, the number of teeth of the internal gear is 9-13, the number of teeth few of the gear ratio internal gear of driven external gear
It is individual.
This practical beneficial effect：This practicality damps counnter attack by the way that the driven shaft end of external gear rotary pump is set into transient state
Rotation structure, wherein transient state damping anti-reverse-rotation structure include chamber fluid transformational structure, under high voltage transient impact, can be effective
Absorbing, and stabilization braking are carried out, prevents the external gear rotary pump of unexpected stalling from being fallen because outlet pressure is more than inlet pressure
Turn.
This practical feature and advantage will be described in detail by embodiment combination accompanying drawing.
Brief description of the drawings
Fig. 1 is the front view of the damping brake structure of this practical external gear rotary pump；
Fig. 2 is A-A visual angles profile in Fig. 1；
Fig. 3 is B-B visual angles profile in Fig. 2；
Fig. 4 is the assembling structure schematic diagram of this practicality practical application in external gear rotary pump；
Fig. 5 is the gear structure schematic diagram of external gear rotary pump in this practicality.
In figure：In 1- non-returns seat, 2- axial ratchets, 3- cylinder bodies, 4- driven shafts, 5- non-return fasteners, the driven external gears of 6-, 7-
Countershaft, 8- ripple springs, 9- flanges, 10- gear-boxes, 11- sliding bearings, 12- pump covers, 13- gears, the 14- pump housings, 15- sealings
Ring, 16- driving shafts, 17- ball bearings, 18- synchromesh gears, 19- gear box covers, 201- internal gears, 301- first chambers, 302-
Three check valves, the check valves of 303- second, 304- second chambers, the check valves of 305- first, the chambers of 306- the 3rd, the chambers of 307- the 4th
Room, the check valves of 308- the 4th.
Specific embodiment
Refering to Fig. 1~Fig. 5, a kind of damping brake structure of this practical external gear rotary pump, including positioned at external gear pump
Driven shaft 4 and gear box cover 19 on pump, it is characterised in that also include：
Non-return seat 1 in a ring, non-return 1 endoporus of seat is fixedly set on one end of driven shaft 4 of external gear rotary pump；
Circumferentially the non-return fastener 5 on non-return 1 end face of seat, bullet is provided between non-return fastener 5 and non-return seat 1
Spring；
Axial ratchet 2, one end of the axial ratchet 2 is provided with ratchet, and the other end is provided with integral type internal gear 201, institute
The oil through of multiple axial direction arrays is provided with the cylindrical outer wall for stating internal gear 201, the axial ratchet 2 is coaxial with non-return seat 1
Wavy spring 8, ratchet and the joint of non-return fastener 5 are provided between arrangement, and axial ratchet 2 and non-return seat 1；
Also include the driven external gear 6 being fixed on by a jackshaft 7 in the internal gear 201, the driven external tooth
Wheel 6 is intermeshed by the gear teeth with internal gear 201 and is connected；
Include being enclosed within the cylinder body 3 on the outside of the cylinder wall of the internal gear 201 again, flange 9 is provided with cylinder body 3, oil
Cylinder body 3 is fixed by screws on the gear box cover 19 of external gear rotary pump, so as to the non-return fastener 5 with spring and be connected to
The axial ratchet 2 of ripple spring 8 carries out axial constraint；
The side of cylinder body 3 is provided with the first chamber 301 of vertical distribution and the second chamber positioned at the lower section of first chamber 301
Room 304, encloses between the cylindrical outer wall of the external gear and the internal face of cylinder body 3 and is provided with the 3rd chamber 306 and positioned at the 3rd chamber
4th chamber 307 of the lower section of room 306；It is respectively arranged with positioned at second chamber between the chamber 307 of the second chamber 304 and the 4th
304 sides and the first check valve 305 for arranging vertically and positioned at the top of second chamber 304 and the second horizontally disposed check valve
303, the conducting direction of first check valve 305 is second check valve 303 from the 4th chamber 307 to second chamber 304
Conducting direction be from second chamber 304 to the 4th chamber 307；The lower section of the first chamber 301 and side be respectively arranged with
Second chamber 304 is connected and the 3rd check valve 302 arranged vertically and the 4th list for being connected with the 3rd chamber 306 and being arranged vertically
To valve 308, the conducting direction of the 3rd check valve 302 is that, from first chamber 301 to second chamber 304, the described 4th is unidirectional
The conducting direction of valve 308 is from the 3rd chamber 306 to first chamber 301；
The other end of the driven shaft 4 is set with sliding bearing 11, and the sliding bearing 11 is arranged on a pump cover 12
On, the driving shaft 16 of one and the parallel distribution of the driven shaft 4 is additionally provided between the pump cover 12 and gear box cover 19, it is described
The gear 13 being meshed is provided with driving shaft 16 and driven shaft 4, the pump housing 14, the pump housing are provided with outside the gear 13
14 are fixedly connected by screw with the pump cover 12；Gear-box 10 is provided between the pump housing 14 and the gear box cover 19,
Ball bearing 17 and intermeshing synchromesh gear 18 are provided with driven shaft 4 and driving shaft 16 in the gear-box 10；Institute
State and be provided with sealing ring 15 at driven shaft 4 and driving shaft 16 between the pump housing 14 and gear-box 10.
The quantity of the non-return fastener 5 is 8-9.
The number of teeth of the internal gear 201 is 9-13, and the number of teeth of the gear ratio internal gear 201 of driven external gear 6 is few one.
This practical course of work：
A kind of damping brake structure of this practical external gear rotary pump, when external gear rotary pump is stopped suddenly, if
The inlet pressure of pump is less than outlet pressure, and non-return seat 1 is rotated backward with driven shaft 4, drives non-return fastener 5 to rotate backward, axial spine
Wheel 2 is inverted by the twisting force of non-return fastener 5, drives the internal gear 201 of integral type to rotate, and internal gear 201 drives on its interior
Driven external gear 6 rotate；Hydraulic pressure full of viscosity more than 150 in first chamber 301 and second chamber 304 in cylinder body 3
Oil, the hydraulic oil in first chamber 301 presses logical 3rd check valve 302 under gravity, second chamber 304 is full of hydraulic pressure
Oil, external gear pump sudden-stop of bump and when inverting, driven external gear 6 is rotated clockwise, the original hydraulic oil for accumulating of the 3rd chamber 306
Enter the 4th chamber 307, the damping action that last hydraulic oil passes through the first check valve 305 by oil through and the effect of being stressed
Second chamber 304 is slowly entered, after second chamber 304 is full of hydraulic oil, then driven shaft 4 stops operating.
Above-described embodiment is the explanation to this practicality, is not the restriction to this practicality, it is any to this practical simple transformation after
Scheme belong to this practical protection domain.
Claims (3)
1. the damping brake structure of a kind of external gear rotary pump, including driven shaft (4) and gear on external gear rotary pump
Case lid (19), it is characterised in that：Also include：
Non-return seat (1) in a ring, non-return seat (1) is fixedly set in external gear pump in annular, non-return seat (1) endoporus
On driven shaft (4) one end of pump；
Circumferentially the non-return fastener (5) on non-return seat (1) end face, is provided between non-return fastener (5) and non-return seat (1)
Spring；
Axial ratchet (2), described axial ratchet (2) one end is provided with ratchet, and the other end is provided with integral type internal gear (201),
The oil through of multiple axial direction arrays, the axial ratchet (2) and non-return seat are provided with the cylindrical outer wall of the internal gear (201)
(1) it is coaxially arranged, and it is provided with wavy spring (8), ratchet and non-return fastener (5) phase between axial ratchet (2) and non-return seat (1)
Meet place；
Also include by a driven external gear (6) being fixed on by a jackshaft (7) in the internal gear (201), institute
Driven external gear (6) is stated to be connected by gear teeth intermeshing with internal gear (201)；
Include being enclosed within the cylinder body (3) on the outside of the cylinder wall of the internal gear (201) again, cylinder body is provided with flange on (3)
(9), cylinder body (3) is fixed by screws on the gear box cover of external gear rotary pump (19), so as to the non-return with spring
The axial ratchet (2) detained (5) and be connected to ripple spring (8) carries out axial constraint；
The side of cylinder body (3) is provided with the first chamber of vertical distribution (301) and below first chamber (301) second
Chamber (304), encloses between the internal face of the cylindrical outer wall and cylinder body (3) of the external gear and is provided with the 3rd chamber (306) and position
The 4th chamber (307) below the 3rd chamber (306)；Set respectively between the second chamber (304) and the 4th chamber (307)
It is equipped with positioned at second chamber (304) side and the first check valve (305) for arranging vertically and positioned at second chamber (304) top simultaneously
Horizontally disposed the second check valve (303), the conducting direction of first check valve (305) is from the 4th chamber (307) to
Two chambers (304), the conducting direction of second check valve (303) is from second chamber (304) to the 4th chamber (307)；Institute
State first chamber (301) lower section and side is respectively arranged with the 3rd check valve for being connected with second chamber (304) and being arranged vertically
(302) the 4th check valve (308) that and with the 3rd chamber (306) is connected and arranges vertically, the 3rd check valve (302) are led
Logical direction is that the conducting direction of the 4th check valve (308) is from the 3rd from first chamber (301) to second chamber (304)
Chamber (306) is to first chamber (301)；
The other end of the driven shaft (4) is set with sliding bearing (11), and the sliding bearing (11) is arranged on a pump cover
(12) on, a master for distribution parallel with the driven shaft (4) is additionally provided between the pump cover (12) and gear box cover (19)
Moving axis (16), is provided with the gear (13) being meshed on the driving shaft (16) and driven shaft (4), the gear (13) is outside
The pump housing (14) is provided with, the pump housing (14) is fixedly connected by screw with the pump cover (12)；The pump housing (14) with it is described
Gear-box (10) is provided between gear box cover (19), on the driven shaft (4) and driving shaft (16) in the gear-box (10)
It is provided with ball bearing (17) and intermeshing synchromesh gear (18)；Driven shaft between the pump housing (14) and gear-box (10)
And driving shaft (16) place is provided with sealing ring (15) (4).
2. the damping brake structure of external gear rotary pump as claimed in claim 1, it is characterised in that：The non-return fastener (5)
Quantity is 8-9.
3. the damping brake structure of external gear rotary pump as claimed in claim 1, it is characterised in that：The internal gear (201)
The number of teeth be 9-13, the number of teeth of the gear ratio internal gear (201) of driven external gear (6) is few one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216799.9U CN206190517U (en) | 2016-11-11 | 2016-11-11 | External gear pump's damping braking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216799.9U CN206190517U (en) | 2016-11-11 | 2016-11-11 | External gear pump's damping braking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190517U true CN206190517U (en) | 2017-05-24 |
Family
ID=58735327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621216799.9U Expired - Fee Related CN206190517U (en) | 2016-11-11 | 2016-11-11 | External gear pump's damping braking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190517U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481553A (en) * | 2016-11-11 | 2017-03-08 | 温州大学 | A kind of damping brake structure of external gear rotary pump |
-
2016
- 2016-11-11 CN CN201621216799.9U patent/CN206190517U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481553A (en) * | 2016-11-11 | 2017-03-08 | 温州大学 | A kind of damping brake structure of external gear rotary pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20181111 |