CN221121818U - Grease pump for engineering machinery - Google Patents
Grease pump for engineering machinery Download PDFInfo
- Publication number
- CN221121818U CN221121818U CN202323166992.9U CN202323166992U CN221121818U CN 221121818 U CN221121818 U CN 221121818U CN 202323166992 U CN202323166992 U CN 202323166992U CN 221121818 U CN221121818 U CN 221121818U
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- plunger
- valve
- grease
- oil outlet
- line
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- 239000004519 grease Substances 0.000 title claims abstract description 53
- 238000009826 distribution Methods 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000001050 lubricating effect Effects 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims description 25
- 238000010276 construction Methods 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003031 feeding effect Effects 0.000 description 1
- 239000004572 hydraulic lime Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a grease pump for engineering machinery, which comprises an oil storage tank, a hydraulic power distribution part and an oil outlet line; the oil storage tank is connected with a liquid path of a liquid power distribution part through a line, and the liquid power distribution part is connected with an oil outlet line through a line; the oil outlet circuit outputs lubricating grease to a piece to be lubricated; the hydraulic power distribution part is used for feeding in forward and reverse directions; the hydraulic power distribution portion includes a plunger valve body; a plunger part is arranged in the valve cavity of the plunger valve body; a spacing part is arranged in the valve cavity; the plunger part comprises plungers I and plungers II which are respectively arranged at two sides of the interval part; an intermediate valve core which is in clearance fit with the spacing part is arranged between the plunger I and the plunger II; the plunger I, the partition and the plunger II divide the valve cavity into an end cavity A, a first compartment I, a second compartment II and an end cavity B. The utility model has reasonable design, compact structure and convenient use.
Description
Technical Field
The present utility model relates to a grease pump for construction machinery.
Background
At present, the hydraulic drive of the hydraulic drive lubricating pump adopts a mode of distributing oil by a distributor, oil absorption and oil discharge of grease are carried out through the left-right movement of a plunger, then the oil outlet is connected with the oil inlet of the distributor, lubricating grease distribution is carried out through the distributor, and 4 lubricating points are distributed, so that the structure is complex, and the cost is relatively high. Referring to CN2381876Y, a hydraulic lime grease lubrication apparatus.
And because the functions of 4 lubrication points of two plungers and one distributor are realized by adopting plunger oil absorption and oil discharge and distributor distribution, the O-shaped ring point positions of the end face seal are more, the leakage risk is high, and the cost is relatively high. The piston of the original double-power liquid-driven lubricating pump adopts the sealing mode of an O-shaped ring and a check ring, and has poor wear resistance, short service life and larger friction force.
Disclosure of utility model
The technical problem to be solved by the utility model is generally to provide a grease pump for engineering machinery.
In order to solve the problems, the utility model adopts the following technical scheme:
In order to dispense with a distributor, a lubricating grease pump for engineering machinery comprises an oil storage tank, a hydraulic power distribution part and an oil outlet line;
The oil storage tank is connected with a liquid path of a liquid power distribution part through a line, and the liquid power distribution part is connected with an oil outlet line through a line; the oil outlet circuit outputs lubricating grease to a piece to be lubricated;
The hydraulic power distribution part is used for feeding in forward and reverse directions;
the hydraulic power distribution portion includes a plunger valve body; a plunger part is arranged in the valve cavity of the plunger valve body;
A spacing part is arranged in the valve cavity;
The plunger part comprises plungers I and plungers II which are respectively arranged at two sides of the interval part; an intermediate valve core which is in clearance fit with the spacing part is arranged between the plunger I and the plunger II;
The plunger I, the partition part and the plunger II divide the valve cavity into an end cavity A, a first compartment I, a second compartment II and an end cavity B;
the first compartment I and/or the second compartment II respectively correspond to the branch circuits of the appointed oil outlet circuit.
As a further improvement of the above technical scheme:
In order to realize quantitative grease feeding, the hydraulic power distribution part quantitatively outputs lubricating grease;
In order to fully utilize the double strokes of the valve, the end chamber A enters the hydraulic power to drive the plunger part to move forward, the space of the second separation chamber II is enlarged, grease is entered, the space of the first separation chamber I is reduced, and the grease is discharged;
The end chamber B enters the hydraulic power to drive the plunger part to move reversely, the space of the second compartment II is reduced, grease is discharged, and the space of the first compartment I is enlarged, so that grease enters.
For convenient assembly, the intermediate valve core and the plunger I and/or the intermediate valve core and the plunger II are arranged in a split way.
In order to realize unidirectional output, exhaust and pressure monitoring, a unidirectional valve group is arranged on an oil outlet line; an exhaust valve and/or a pressure gauge are arranged on the oil outlet line.
The end chamber A and/or the end chamber B are/is communicated with a corresponding control oil block A.
An oil outlet block is arranged on the oil outlet line and used for fixing the oil outlet line and/or the one-way valve group;
In order to ensure the safety of the system, one branch of the oil outlet line returns to the oil storage tank through the line A after passing through the corresponding one-way valve A and the overflow valve.
In order to ensure lubrication during power failure or faults, a manual pump plunger is connected between the oil storage tank and the oil outlet line, and an outlet of the manual pump plunger is also connected with an inlet of an overflow valve;
The manual pump plunger has a manual pump lever for manually pumping grease.
The plunger valve body is connected with a main valve block;
In order to reduce wear of the seal, a glain ring is provided on the plunger portion.
In order to realize multi-station filling, the plunger valve body is also connected with a plunger valve in parallel, and a plunger is arranged in the plunger valve;
a second spacing part is arranged in the second plunger valve;
The second plunger comprises a plunger III and a plunger IV which are respectively arranged at two sides of the second interval part and are connected through a second middle core;
The outlet of the oil storage tank is connected with a line B which is divided into two paths to be respectively connected with inlets of the first separation chamber I and the second separation chamber II;
In order to realize double hydraulic drive, the hydraulic power distribution part comprises a reversing valve group; the end chamber A is connected with an A outlet of the reversing valve group through a line C;
The end chamber B is connected with an outlet B of the reversing valve group through a line D;
The T port of the reversing valve group is connected with an oil tank;
an inlet P of the reversing valve group is connected with an external power pump;
A regulating valve is provided on line D.
In order to realize stable integral structure, a main valve block is fixed at the lower end of the oil storage tank, and the side part of the main valve block is connected with an oil outlet block; installing a pressure gauge on the oil outlet block;
The end part of the main valve block is connected with a corresponding control oil block A through a Gelai ring;
the Gelai circle is arranged on the plunger I, the plunger II, the plunger III and the plunger IV.
The utility model adopts a plurality of plunger structures, saves the distributor configuration of the original design scheme, controls one lubrication point by each plunger, thus realizing the function of controlling four lubrication points by a plurality of plungers, reducing the product volume, lowering the product cost, reducing the configuration and improving the product reliability.
The utility model has reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, fund saving, compact structure and convenient use.
Drawings
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is a structural diagram of the present utility model.
Fig. 3 is a schematic view of the internal structure of the present utility model.
Wherein: 1. an oil storage tank; 2. a pressure gauge; 3. oil block discharging; 4. a manual pump plunger; 5. a manual pump rod; 6. controlling the oil block A; 7. a main valve block; 8. a Gelai circle; 9. a plunger valve body; 9.1, plunger I;9.2, plunger II;9.3, plunger III;9.4, plunger IV; 10. a spacer; 11. a first compartment I; 12. a second compartment II; 13. a line A; 14. a line B; 15. a one-way valve group; 16. a one-way valve A; 17. a member to be lubricated; 18. a reversing valve group; 19. an oil tank; 20. an external power pump; 21. a line C; 22. a line D; 23. a regulating valve; 24. an exhaust valve; 25. a middle valve core; 26. end chamber B.
Detailed Description
As shown in fig. 1-3, the grease pump for engineering machinery of the present embodiment, specifically, as shown in fig. 1, includes an oil storage tank 1 for storing grease, a hydraulic power distribution part for realizing high-speed, high-pressure and quantitative oil feeding of grease, and an oil outlet line for realizing fixed-point oil feeding;
As shown in fig. 1, an oil storage tank 1 is connected with a liquid path of a liquid power distribution part through a line, a one-way valve, a stop valve and the like are omitted from illustration, and the liquid power distribution part is connected with a liquid path of an oil outlet line through a line; the oil outlet circuit outputs lubricating grease to the part to be lubricated 17;
The hydraulic power distribution part is used for feeding in forward and reverse directions, so that the full utilization of the stroke is realized, and the feeding effect is improved;
The hydraulic power distribution portion includes a plunger valve body 9; a plunger part is arranged in the valve cavity of the plunger valve body 9 and is dumbbell-shaped;
A spacing part 10 is arranged in the valve cavity, so that the separation is realized, and two positive and negative feeding materials are formed;
the plunger part comprises plungers I9.1 and plungers II9.2 which are respectively arranged at two sides of the spacing part 10; an intermediate valve core 25 which is in clearance fit with the spacing part 10 is arranged between the plunger I9.1 and the plunger II9.2, so that communication is realized, and the clearance fit is sealed;
By way of structural description, the plunger I9.1, the spacer 10 and the plunger II9.2 divide the valve chamber into an end chamber a, a first compartment I11, a second compartment II12 and an end chamber B26.
As an introduction of a working process, the end chamber A enters the hydraulic power to drive the plunger part to move forward, the space of the second separation chamber II12 is enlarged, grease enters the first separation chamber I11, and the space of the first separation chamber I is reduced to discharge the grease; the end chamber B26 enters the hydraulic power to drive the plunger part to move reversely, the space of the second separation chamber II12 is reduced, grease is discharged, the space of the first separation chamber I11 is enlarged, and the grease is entered, so that the quantitative output of the hydraulic power distribution part is realized;
The area of action on the plunger I9.1 in the end chamber a is greater than the area of action on the plunger I9.1 in the first compartment I11; the middle valve core 25 and the plunger I9.1 and/or the middle valve core 25 and the plunger II9.2 are arranged in a split mode, so that high speed, high pressure and grease injection are realized, automatic cleaning of the circuit accumulation grease residue is realized, fixed point filling is also realized, the process is reasonable, the structure is convenient, the accurate grease addition is realized by utilizing the difference of the volumes of the two sides, the metering error is reduced, meanwhile, only one plunger is driven, the mass is small, the inertia force is small, the crawling stroke is reduced, the accurate metering is realized, and the error is further reduced.
A one-way valve group 15 is arranged on the oil outlet line; an exhaust valve 24 and/or a pressure gauge 2 are arranged on the oil outlet line, so that the work of exhausting, pressure detection and the like is realized.
The end chamber A and/or the end chamber B26 are communicated with corresponding control oil blocks A6, so that the control oil blocks A6 are used for connecting and fixing control oil paths, and the left-right (positive and negative) movement of the driving valve core is realized.
An oil outlet block 3 is arranged on the oil outlet line and is used for fixing the oil outlet line and/or the one-way valve group 15, so that the fixed connection is convenient;
The first separation chamber I11 and/or the second separation chamber II12 respectively correspond to the branch circuits of the designated oil outlet circuit, so that a distributor is omitted, fixed-point oiling is realized, pressure damage caused by the existence of the distributor is avoided, and the volume is reduced.
After one branch of the oil outlet line passes through the corresponding one-way valve A16 and the overflow valve, the oil returns to the oil storage tank 1 through the line A13, and when the oil outlet pressure is larger than a set threshold value, namely the outlet is blocked or the oil outlet is not smooth, the line pressure can be caused to be overlarge, so that the overflow valve is opened, grease returns to the oil storage tank, the stability of the system is ensured, and the overlarge pressure is avoided.
In order to avoid the damage of key parts caused by the incapability of realizing hydraulic feeding when a hydraulic control system is in a problem, a manual pump plunger 4 is connected between the oil storage tank 1 and an oil outlet line, and the outlet of the manual pump plunger 4 is also connected with the inlet of an overflow valve;
As a specific operation principle, the manual pump plunger 4 has a manual pump lever 5 for manually pumping grease.
In order to achieve a fixed connection, the plunger valve body 9 is directly connected to the main valve block 7; thereby realizing fixed connection and reducing line pressure loss.
The plunger part is provided with the Gelai ring 8, thereby replacing an O ring and prolonging the service life.
In order to realize multi-path feeding, the plunger valve body 9 is also connected with a plunger valve in parallel, and a plunger is arranged in the plunger valve;
a second spacing part is arranged in the second plunger valve;
The second plunger comprises plungers III9.3 and IV9.4 which are respectively arranged at two sides of the second interval part and are connected through a second middle core; thereby realizing 2-way feeding.
The outlet of the oil storage tank 1 is connected with a line B14, and the line B14 is divided into two paths to be respectively connected with the inlets of the first separation chamber I11 and the second separation chamber II 12; conventional elements such as a check valve, a throttle valve, etc. are omitted from the drawings.
The hydraulic power distribution portion includes a reversing valve block 18; the end chamber A is connected with an A outlet of the reversing valve group 18 through a line C21; the end chamber B26 is connected with the outlet B of the reversing valve group 18 through a line D22; the T port of the reversing valve group 18 is connected with an oil tank 19; an external power pump 20 is connected to the P inlet of the reversing valve group 18; thereby realizing the left-right movement of the hydrodynamic control valve core and realizing the quantitative feeding.
The line C21 and the line D22 are provided with a regulator valve 23 to control the moving speed of the valve element.
As an integrated arrangement, a main valve block 7 is fixed at the lower end of the oil storage tank 1, and the side part of the main valve block 7 is connected with an oil outlet block 3; a pressure gauge 2 is arranged on the oil outlet block 3; the direct connection is high in integration level, line pressure damage is avoided, and space is saved.
The end part of the main valve block 7 is connected with a corresponding control oil block A6 through a Gelai ring 8;
the Gelai ring 8 can be arranged on the plunger I9.1, the plunger II9.2, the plunger III9.3 and the plunger IV9.4, thereby realizing the replacement of O-rings and improving the tightness and the durability of the sealing ring.
As shown in fig. 1-3, in the working mode, the manual pump plunger 4 is driven by the manual pump rod 5 to move back and forth to perform oil suction and oil discharge actions, so as to lubricate a lubrication point;
In the hydraulic operating mode, the reversing valve group 18 is started (communicated to the right), and hydraulic power enters the line C21 through the P inlet and enters the end chamber A, so that the plunger part is driven;
The end chamber A enters the hydraulic power to drive the plunger part to move forward, the space of the second separation chamber II12 is enlarged, grease enters the first separation chamber I11, the space is reduced, and the grease is discharged;
the first compartment I11 feeds a path of to-be-lubricated parts 17 through a one-way valve A16, and when an outlet is blocked, an overflow valve is opened to realize that lubricating grease returns to the oil storage tank 1.
The end chamber B26 enters the hydraulic power to drive the plunger part to move reversely, the space of the second separation chamber II12 is reduced, grease is discharged, the space of the first separation chamber I11 is enlarged, and the grease is entered, so that the quantitative output of the hydraulic power distribution part is realized;
the plunger I9.1, the plunger II9.2, the plunger III9.3 and the plunger IV9.4 move back and forth in the main valve block 7 under the action of control oil of the control oil block A6 to perform oil suction and oil discharge actions, and lubricate 4 lubrication points respectively.
The present utility model is fully described for more clarity of disclosure and is not set forth in the prior art.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; it is obvious to a person skilled in the art to combine several embodiments of the utility model. Such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A grease pump for a construction machine, characterized by: comprises an oil storage tank (1), a hydraulic power distribution part and an oil outlet circuit;
The oil storage tank (1) is connected with a liquid path of a liquid power distribution part through a circuit, and the liquid power distribution part is connected with an oil outlet circuit through a circuit; the oil outlet circuit outputs lubricating grease to a piece (17) to be lubricated;
The hydraulic power distribution part is used for feeding in forward and reverse directions;
The hydraulic power distribution part comprises a plunger valve body (9); a plunger part is arranged in a valve cavity of the plunger valve body (9);
A spacing part (10) is arranged in the valve cavity;
The plunger part comprises plungers I (9.1) and plungers II (9.2) which are respectively arranged at two sides of the spacing part (10); an intermediate valve core (25) which is in clearance fit with the spacing part (10) is arranged between the plunger I (9.1) and the plunger II (9.2);
The plunger I (9.1), the partition part (10) and the plunger II (9.2) divide the valve cavity into an end cavity A, a first separation cavity I (11), a second separation cavity II (12) and an end cavity B (26);
the first compartment I (11) and/or the second compartment II (12) respectively correspond to the designated branches of the oil outlet circuit.
2. The grease pump for construction machinery according to claim 1, wherein: the end chamber A enters the hydraulic power to drive the plunger part to move forward, the space of the second separation chamber II (12) is enlarged, grease enters the second separation chamber I (11) and the space of the first separation chamber I is reduced, and the grease is discharged;
The hydraulic power distribution part quantitatively outputs lubricating grease;
The end chamber B (26) enters the hydraulic power to drive the plunger part to move reversely, the space of the second compartment II (12) is reduced, grease is discharged, and the space of the first compartment I (11) is enlarged, so that grease enters.
3. The grease pump for construction machinery according to claim 1, wherein: the intermediate valve core (25) and the plunger I (9.1) and/or the intermediate valve core (25) and the plunger II (9.2) are arranged separately.
4. The grease pump for construction machinery according to claim 1, wherein: a one-way valve group (15) is arranged on the oil outlet line; an exhaust valve (24) and/or a pressure gauge (2) are arranged on the oil outlet line.
5. The grease pump for construction machinery according to claim 4, wherein: the end chamber A and/or the end chamber B (26) is/are communicated with a corresponding control oil block A (6).
6. The grease pump for construction machinery according to claim 5, wherein: an oil outlet block (3) is arranged on the oil outlet line and is used for fixing the oil outlet line and/or a one-way valve group (15);
One branch of the oil outlet line returns to the oil storage tank (1) through the line A (13) after passing through the corresponding one-way valve A (16) and the overflow valve.
7. A grease pump for a construction machine according to any one of claims 1-6, characterized in that: a manual pump plunger (4) is connected between the oil storage tank (1) and the oil outlet line, and an outlet of the manual pump plunger (4) is also connected with an inlet of an overflow valve;
the manual pump plunger (4) has a manual pump rod (5) for manually pumping grease.
8. The grease pump for construction machinery according to claim 7, wherein: the plunger valve body (9) is connected with a main valve block (7);
A Gellan ring (8) is arranged on the plunger part.
9. The grease pump for a construction machine according to claim 8, wherein: the plunger valve body (9) is also connected with a plunger valve in parallel, and a second plunger is arranged in the plunger valve;
a second spacing part is arranged in the second plunger valve;
The second plunger comprises a plunger III (9.3) and a plunger IV (9.4) which are respectively arranged at two sides of the second interval part and are connected through a second middle core;
The outlet of the oil storage tank (1) is connected with a line B (14), and the line B (14) is divided into two paths to be respectively connected with the inlets of the first separation chamber I (11) and the second separation chamber II (12);
The hydraulic power distribution part comprises a reversing valve group (18); the end chamber A is connected with an A outlet of the reversing valve group (18) through a line C (21);
The end chamber B (26) is connected with the outlet B of the reversing valve group (18) through a line D (22);
An oil tank (19) is connected to the T port of the reversing valve group (18);
An inlet P of the reversing valve group (18) is connected with an external power pump (20);
A regulating valve (23) is arranged on the line D (22).
10. The grease pump for construction machinery according to claim 9, wherein: as an integrated arrangement, a main valve block (7) is integrated and fixed at the lower end of the oil storage tank (1), and an oil outlet block (3) is integrated at the side part of the main valve block (7); a pressure gauge (2) is integrally arranged on the oil outlet block (3);
the end part of the main valve block (7) is connected with a corresponding control oil block A (6) through a Griley (8);
the Gelai circle (8) is arranged on the plunger I (9.1), the plunger II (9.2), the plunger III (9.3) and the plunger IV (9.4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323166992.9U CN221121818U (en) | 2023-11-23 | 2023-11-23 | Grease pump for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323166992.9U CN221121818U (en) | 2023-11-23 | 2023-11-23 | Grease pump for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221121818U true CN221121818U (en) | 2024-06-11 |
Family
ID=91337902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323166992.9U Active CN221121818U (en) | 2023-11-23 | 2023-11-23 | Grease pump for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221121818U (en) |
-
2023
- 2023-11-23 CN CN202323166992.9U patent/CN221121818U/en active Active
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