CN217950668U - Simple and easy double pump extrinsic cycle control structure for hydraulic machine - Google Patents
Simple and easy double pump extrinsic cycle control structure for hydraulic machine Download PDFInfo
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- CN217950668U CN217950668U CN202221231694.6U CN202221231694U CN217950668U CN 217950668 U CN217950668 U CN 217950668U CN 202221231694 U CN202221231694 U CN 202221231694U CN 217950668 U CN217950668 U CN 217950668U
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Abstract
The utility model discloses a hydraulic machine is with simple and easy tandem pump extrinsic cycle control structure, including simple and easy tandem pump and external cycle control subassembly, the external cycle control subassembly includes three way connection, three way connection one end intercommunication mass flow pump exit end, big pump overflow joint and check valve are connected respectively to other both ends, be equipped with big pump overflow spring in the big pump overflow joint, big pump overflow spring is close to three way connection one end and is equipped with sealing steel ball one, it has mass flow pump overflow hole to open on the big pump overflow joint, be equipped with big pump check valve spring in the check valve, big pump check valve spring is close to three way connection one end and is equipped with sealing steel ball two, the check valve upper end is equipped with the circulating bolt, the small flow pump exit end communicates little pump directly one in proper order, little pump directly leads to two, little directly leads to two upper ends and links to each other with the reversing valve input, connect through the dicyclo articulate between little pump two middle parts and the check valve. The flow superposition can be realized, the low energy consumption of the operation of the hydraulic system can be realized, and the debugging and the maintenance of the hydraulic machine are facilitated.
Description
Technical Field
The utility model relates to a dual gear pump technical field specifically is a hydraulic machinery is with simple and easy dual pump extrinsic cycle control structure.
Background
The duplex gear pump is a combined pump formed by connecting large and small gear pumps with inconsistent hydraulic displacement in parallel through a common transmission shaft; the flow of the combined body is large, and the flow control structure with proper blocking has the advantage of low energy consumption, so that the large hydraulic machinery such as heavy-duty splitting machines, hydraulic lifting machines and the like can be widely applied.
At present, an internal hydraulic control structure (an overflow valve, a one-way valve and the like, for short, an integrated duplex pump) is adopted in a duplex gear pump in the traditional sense to achieve the aims of large flow and low energy consumption. However, this structure has a number of disadvantages: the processing is difficult, and the requirements on the hole site size, the conical surface sealing precision and the like are high due to the limit of the inherent size of the sectional material; the internal integrated control valve is difficult to control hydraulic adjustment, the overall performance of the integrated dual pump is affected, and the hydraulic system is difficult to quickly check and diagnose due to the fact that the hydraulic system needs to be integrally disassembled when in fault.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic pressure machinery is with simple and easy tandem pump extrinsic cycle control structure to solve the problem that proposes among the above-mentioned background art.
In order to solve the technical problem, the utility model provides a following technical scheme: a simple dual pump external circulation control structure for hydraulic machinery comprises a simple dual pump and an external circulation control assembly, wherein the simple dual pump comprises a pump body, a gear shaft and a gear, the pump body comprises a low-pressure pump cover, a low-pressure pump shell, a high-pressure pump shell and a high-pressure pump cover, the low-pressure pump shell, the high-pressure pump shell and the high-pressure pump cover are sequentially arranged from left to right, a large-flow pump outlet end and a large-flow pump oil suction inlet end are respectively arranged at the upper end and the lower end of the low-pressure pump shell, a small-flow pump outlet end and a small-flow pump oil suction inlet end are respectively arranged at the upper end and the lower end of the high-pressure pump shell, the external circulation control assembly comprises a three-way joint, one end of the three-way joint is communicated with the large-flow pump outlet end, the other two ends of the three-way joint are respectively connected with a large-pump overflow joint and a one-way valve, a large-pump overflow spring is arranged in the large-pump one-way valve spring, one-way valve spring is arranged at one end of the large-pump, a sealing steel ball is arranged at one end close to the three-way joint, a small-way pump overflow spring is arranged at the upper end of the large-way valve, a small-flow pump outlet end is communicated with a small-pump overflow hole of the large-way pump, a small-pump overflow joint, the small-pump overflow joint is connected with a small-way valve, the two-way valve is connected with the small-way valve, and a small-way valve, the upper end of the two-way pump, and the two-way valve is connected with the small-way valve, and the small-way valve, the input end of the small-way pump, the two-way pump is connected with the small-way pump, the small-way valve, the two-way valve, and the two-way pump is connected with the small-way pump.
And a pressure adjusting screw is arranged at the left end of the overflow joint of the big pump.
Intermediate partition plates are arranged in inner cavities of the low-pressure pump shell and the high-pressure pump shell, the gear shaft comprises an input shaft and a driven shaft, and ring-made shaft sleeves are arranged outside the input shaft and the driven shaft.
The low-pressure pump cover, the low-pressure pump shell, the high-pressure pump shell and the high-pressure pump cover are connected through positioning pins.
And the elasticity of the first large pump overflow spring is greater than that of the spring of the large pump check valve.
The large-flow pump oil suction inlet end and the small-flow pump oil suction inlet end are both provided with bamboo joint connectors.
Compared with the prior art, the utility model discloses the beneficial effect who reaches is:
1. the utility model discloses a set up the external circulation control assembly who makes up overflow valve and check valve to link it with two high-pressure oil-out of simple and easy tandem pump, not only can realize the stack of flow, but also can realize the low energy consumption target of whole hydraulic system operation, brought the convenience for the debugging of hydraulic pressure machinery, maintenance aspect simultaneously, change quick inspection, diagnosis when hydraulic system trouble, solved the problem that former integrated tandem pump need wholly take off inspection, analysis;
2. each part of the assembly is convenient to process, the size is easy to control, and main components of the assembly, such as a large pump cover, a small pump cover, a shell, a gear and the like, are exchanged and commonly used with the single large gear pump and the single small gear pump;
3. the key control part of the external circulation control assembly is not complex to machine, and the core small part is installed in the same three-way joint, so that the use is convenient.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 2 in accordance with the present invention;
in the figure: 1 simple duplex pump, 2 pump bodies, 3 external circulation control components, 301 pressure adjusting screws, 302 large pump overflow springs, 303 large pump overflow joints, 304 three-way joints, 305 sealing steel balls I, 306 double-ring joints, 307 large pump one-way valve springs, 308 circular bolts, 309 small pump through I, 310 small pump through II, 311 one-way valves, 312 large flow pump overflow holes, 313 sealing steel balls II, 4 low-pressure pump covers, 5 high-pressure pump covers, 7 high-pressure pump covers, 8 large flow pump outlet ends, 9 large flow pump oil suction inlet ends, 10 small flow pump outlet ends, 11 small flow pump inlet ends, 12 middle partition plates, 13 driven shafts, 14 input shafts and 15 circle shaft sleeves.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a simple duplex pump external circulation control structure for hydraulic machinery comprises a simple duplex pump 1 and an external circulation control assembly 3, wherein the simple duplex pump 1 comprises a pump body 2, a gear shaft and a gear, the pump body 2 comprises a low-pressure pump cover 4, a low-pressure pump shell 5, a high-pressure pump shell 6 and a high-pressure pump cover 7, the low-pressure pump cover 4, the low-pressure pump shell 5, the high-pressure pump shell 6 and the high-pressure pump cover 7 are sequentially arranged from left to right, the upper end and the lower end of the low-pressure pump shell 4 are respectively provided with a large-flow pump outlet end 8 and a large-flow pump oil suction inlet end 9, the upper end and the lower end of the high-pressure pump shell 6 are respectively provided with a small-flow pump outlet end 10 and a small-flow pump oil suction inlet end 11, the external circulation control assembly 3 comprises a tee joint 304, one end of the tee joint 304 is communicated with the large-flow pump outlet end 8, the other two ends of the large pump overflow joint 303 are respectively connected with a large pump overflow joint 303 and a check valve 311, a large pump overflow spring 302 is arranged in the large pump overflow joint 303, a sealing steel ball I305 is arranged at one end, close to a tee joint 304, of the large pump overflow spring 302, a large-flow-rate pump overflow hole 312 is formed in the large pump overflow joint 303, a large pump check valve spring 307 is arranged in a check valve, a sealing steel ball II 313 is arranged at one end, close to the tee joint 304, of the large pump check valve spring 307, a through bolt 308 is arranged at the upper end of the check valve 311, the outlet end 10 of the small-flow-rate pump is communicated with a small-pump through I309, the upper end of the small-pump through I309 is connected with a small-pump through II 310, the upper end of the small-pump through II 310 is connected with the input end of the reversing valve, and the middle of the small-pump through II 310 is connected with the check valve 311 through a double-ring joint 306.
The left end of the large pump overflow joint 303 is provided with a pressure adjusting screw 301.
The inner cavities of the low-pressure pump shell 5 and the high-pressure pump shell 6 are internally provided with a middle partition plate 12, the gear shaft comprises an input shaft 14 and a driven shaft 13, and the input shaft 14 and the driven shaft 13 are externally provided with a ring-made shaft sleeve 15.
The low-pressure pump cover 4, the low-pressure pump shell 5, the high-pressure pump shell 6 and the high-pressure pump cover 7 are connected through positioning pins 16.
The elasticity of the first large pump relief spring 32 is greater than the elasticity of the large pump check valve spring 37.
The large flow pump oil suction inlet end 9 and the small flow pump oil suction inlet end 11 are both provided with bamboo joint joints.
The working principle is as follows:
(1) The motor drives the simple dual pump 1, hydraulic oil is sucked from a large-flow pump oil suction inlet end 9 and a small-flow pump oil suction inlet end 11 and is output from a large-flow pump outlet end 8 and a small-flow pump outlet end 10, and oil output from the small-flow pump outlet end 10 directly flows into the input end of the reversing valve through internal oil ducts of a small-pump straight-through first 309 and a small-pump straight-through second 310; the oil output from the outlet end 8 of the large-flow pump enters the three-way joint 304, and because the elasticity (about 5 MPa) of the first large-pump overflow spring 32 is greater than the elasticity (about 4.5 MPa) of the spring 37 of the large-pump check valve, the hydraulic oil pushes the second sealing steel ball 313 away first, and the hydraulic oil flows into the input end of the reversing valve through the check valve 311 and the double-ring joint 306. Thus, the oil output by the large pump and the oil output by the small pump are input to the input end of the reversing valve, so that the flow superposition is realized, namely 1.6+5.0=6.6ml/r is achieved.
(2) When the hydraulic cylinder of the hydraulic actuator is blocked in motion, a load is generated, the pressure of a hydraulic system starts to rise, when the pressure exceeds 5MPa, the sealing steel ball I305 in the closed position is pushed open, oil output by the large pump quickly flows into an oil pool through the overflow hole 312 of the large-flow pump, meanwhile, because the pressure in the channel quickly drops, the spring 37 of the one-way valve of the large pump pushes the sealing steel ball II 313 back to the sealing position, and at the moment, the oil output by the outlet end 8 of the large-flow pump can only overflow and circulate outside the pump body; the oil output from the outlet end 10 of the small-flow pump continuously outputs high-pressure oil to the actuating mechanism, and at the moment, although the system pressure is very high (not less than 20 MPa), the flow is very small, so that the consumed power is low, and the purpose of reducing energy consumption is achieved.
(3) When the load of the actuating mechanism is cancelled, the system pressure is rapidly reduced, and when the system pressure is less than or equal to 5MPa, the working state mode of the (1) is recovered.
(4) The mechanism realizes the calculation data for saving energy consumption
When only the simple duplex pump 1 is used for realizing the working targets of large flow and 20MPa of the system, the required driving power is as follows:
P＝q×p＝6.6ml/r×20MPa＝6.6×10-6×2800÷60m3/s×2000×N/m2
＝6160N.m/s＝6.16KW
p- - - - -Power, unit W/KW
q- -flow, ml/r, description: the motor speed was calculated at 2800 rpm.
When the simple double pump 1+ external circulation control component 3 is used for realizing the working target of large flow and 20MPa of the system, the required driving power is as follows:
P＝q×p＝1.6ml/r×20MPa＝1.6×10-6×2800÷60m3/s×2000×N/m2
＝1493N.m/s＝1.493KW
p- - - - -Power, unit W/KW
q- -flow, ml/r, note: the motor speed is likewise calculated at 2800 rpm.
Certainly, the large pump will consume a certain power in the extracorporeal overflow circulation, and it can be calculated to be about 1100W, so that the total power consumed at this time is about 1100+1493=2593w ≈ 2.6KW
6.16-2.6=3.56KW, therefore, 3.56KW is saved by adopting the simple duplex pump with an extracorporeal circulation control structure, and the aim of reducing energy consumption is achieved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a hydraulic machinery is with simple and easy duplex pump extrinsic cycle control structure which characterized in that: the simple double pump comprises a simple double pump (1) and an external circulation control assembly (3), wherein the simple double pump (1) comprises a pump body (2), a gear shaft and a gear, the pump body (2) comprises a low-pressure pump cover (4), a low-pressure pump shell (5), a high-pressure pump shell (6) and a high-pressure pump cover (7), the low-pressure pump cover (4), the low-pressure pump shell (5), the high-pressure pump shell (6) and the high-pressure pump cover (7) are sequentially arranged from left to right, a large-flow pump outlet end (8) and a large-flow pump oil suction inlet end (9) are respectively arranged at the upper end and the lower end of the low-pressure pump shell (5), a small-flow pump outlet end (10) and a small-flow pump oil suction inlet end (11) are respectively arranged at the upper end and the lower end of the high-pressure pump shell (6), the external circulation control assembly (3) comprises a three-way connector (304), one end of the three-way connector (304) is communicated with the large-flow pump outlet end (8), the other two ends are respectively connected with a large-pump overflow connector (303) and a one-way valve (311), a large-pump overflow spring (302) is arranged in the large-pump overflow connector (302), one-way overflow connector (302) is arranged at one-way connector (304) close to one-way sealing steel ball (305), and a large-flow-way valve (312) is arranged in the one-way valve overflow connector (312) arranged in the one-way valve (312) arranged in the large-way connector (302), one end, close to the three-way joint (304), of the large pump check valve spring (307) is provided with a sealing steel ball II (313), the upper end of the check valve (311) is provided with a through bolt (308), the outlet end (10) of the small flow pump is communicated with a small pump straight-through I (309), the upper end of the small pump straight-through I (309) is connected with a small pump straight-through II (310), the upper end of the small pump straight-through II (310) is connected with the input end of the reversing valve, and the middle of the small pump straight-through II (310) is connected with the check valve (311) through a double-ring joint (306).
2. The simple tandem pump extracorporeal circulation control structure for the hydraulic machine according to claim 1, wherein: and a pressure adjusting screw (301) is arranged at the left end of the large pump overflow joint (303).
3. The simple tandem pump extracorporeal circulation control structure for the hydraulic machine according to claim 1, wherein: intermediate partition plates (12) are arranged in inner cavities of the low-pressure pump shell (5) and the high-pressure pump shell (6), the gear shaft comprises an input shaft (14) and a driven shaft (13), and ring-made shaft sleeves (15) are arranged outside the input shaft (14) and the driven shaft (13).
4. The simple tandem pump extracorporeal circulation control structure for the hydraulic machine according to claim 1, wherein: the low-pressure pump cover (4), the low-pressure pump shell (5), the high-pressure pump shell (6) and the high-pressure pump cover (7) are connected through a positioning pin (16).
5. The simple tandem pump extracorporeal circulation control structure for the hydraulic machine according to claim 1, wherein: the elasticity of the first large pump overflow spring (32) is larger than that of the spring (307) of the large pump check valve.
6. The simple tandem pump extracorporeal circulation control structure for the hydraulic machine according to claim 1, wherein: the large-flow pump oil suction inlet end (9) and the small-flow pump oil suction inlet end (11) are both provided with bamboo joint connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221231694.6U CN217950668U (en) | 2022-05-20 | 2022-05-20 | Simple and easy double pump extrinsic cycle control structure for hydraulic machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221231694.6U CN217950668U (en) | 2022-05-20 | 2022-05-20 | Simple and easy double pump extrinsic cycle control structure for hydraulic machine |
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| Publication Number | Publication Date |
|---|---|
| CN217950668U true CN217950668U (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221231694.6U Active CN217950668U (en) | 2022-05-20 | 2022-05-20 | Simple and easy double pump extrinsic cycle control structure for hydraulic machine |
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| CN (1) | CN217950668U (en) |
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- 2022-05-20 CN CN202221231694.6U patent/CN217950668U/en active Active
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