CN109114254B - Valve group and multi-way valve for serial-parallel operation of high-pressure pump and low-pressure pump - Google Patents
Valve group and multi-way valve for serial-parallel operation of high-pressure pump and low-pressure pump Download PDFInfo
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- CN109114254B CN109114254B CN201811096001.5A CN201811096001A CN109114254B CN 109114254 B CN109114254 B CN 109114254B CN 201811096001 A CN201811096001 A CN 201811096001A CN 109114254 B CN109114254 B CN 109114254B
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- oil
- oil inlet
- way valve
- valve
- passage
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- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000005242 forging Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a valve bank and a multi-way valve for serial-parallel connection work of a high-low pressure pump, wherein the valve bank comprises a five-position six-way valve body, and an oil return bridging body and a one-way valve bridging body which are fixedly arranged on the left side and the right side of the five-position six-way valve body, wherein a first oil inlet channel P1 and a second oil inlet channel P2 carry out oil return unloading towards a T1 port and a T2 port when the valve rod is in a middle position; when the valve rod is reversed forwards by one position, the first oil inlet channel P1 supplies oil to the executing mechanism independently and the second oil inlet channel P2 returns oil to the port T1 for unloading; when the valve rod commutates forwards for two positions, the second oil inlet channel P2 and the first oil inlet channel P1 are used for supplying oil to the executing mechanism after the third oil inlet channel is converged. The valve group can adapt to serial-parallel operation of high-pressure pumps and low-pressure pumps, and double pumps are converged when light load occurs; and at heavy load, the single pump supplies oil. Therefore, the energy consumption can be reduced, the required motor power is low, and the investment cost is limited.
Description
Technical Field
The invention relates to a valve group for serial-parallel operation of high-pressure pumps and a multi-way valve with the valve group.
Background
In many applications, such as forging machines, presses, injection molding machines, truck cranes, etc., we note that high flows are required for fast forward, but not high loads, and low flows are required for high loads.
At present, the types of hydraulic valves with double-pump converging function are many, but the special valve group capable of meeting the requirements is very rarely seen in the market.
Therefore, it is necessary to provide a dedicated valve group having a combination function of double pump merging at the time of light load and single pump oil supply at the time of heavy load.
Disclosure of Invention
The invention aims to provide a valve group for serial-parallel operation of high-pressure pumps and low-pressure pumps, so as to realize the combined function of single oil supply during heavy load and double pump confluence during light load.
The invention also aims to provide a multiway valve with the valve group.
Therefore, on one hand, the invention provides a valve group for double parallel operation of a high-pressure pump and a low-pressure pump, which is characterized by comprising a five-position six-way valve body, and oil return bridging bodies and one-way valve bridging bodies which are fixedly arranged on the left side and the right side of the five-position six-way valve body.
The five-position six-way valve body is provided with a five-position six-way valve rod, a runner PT positioned in the axial middle of the valve rod, two runners PT which are symmetrically arranged on the left and right sides of the runner PP in the axial direction of the valve rod, two first bypass channels, two branch oil channels, a runner A and a runner B, a first return oil channel and a second return oil channel, the five-position six-way valve body is also provided with a third oil inlet channel, and the runners from the third oil inlet channel to the two branch oil channels are provided with first check valves.
The oil return bridge body is provided with a first oil return passage, a T1 port communicated with the first oil return passage, a second oil return passage and a T2 port communicated with the second oil return passage, and the oil return bridge body is also provided with a second oil inlet passage P2, wherein the second oil inlet passage P2 is communicated with the first bypass passage.
The one-way valve bridge body is provided with a third oil inlet channel, a first oil inlet channel P1 communicated with the third oil inlet channel, a first oil return channel, a second bypass flow channel communicated with the first oil return channel, a first bypass flow channel and a second one-way valve arranged on a flow channel from the third oil inlet channel to the first bypass flow channel, wherein the second oil inlet channel P2 is communicated with the flow channel PP, a flow channel PT of the five-position six-way valve body is communicated with the second bypass flow channel of the one-way valve bridge body, and the first oil inlet channel P1 and the second oil inlet channel P2 are used for oil return unloading towards a T1 port and a T2 port when the valve rod is in the middle position; when the valve rod is reversed forwards by one position, the first oil inlet channel supplies oil to the executing mechanism independently and the second oil inlet channel returns oil to the port T1 for unloading; when the valve rod commutates forwards for two positions, the second oil inlet channel and the first oil inlet channel are used for supplying oil to the executing mechanism after the third oil inlet channel is converged.
Further, the valve block is used for a forging machine, a press, an injection molding machine or a truck crane.
According to another aspect of the invention, there is provided a multi-way valve comprising a first oil inlet body, a first reversing valve body, a one-way valve bridge passing body, a five-position six-way valve body, an oil return bridge passing body, a second reversing valve body and a second oil inlet body which are sequentially connected in series, wherein the oil return bridge passing body, the five-position six-way valve body and the one-way valve bridge passing body form a valve group for serial-parallel operation of high-pressure and low-pressure pumps according to the description above, wherein the first oil inlet body is provided with a P1 port connected with a first pump, a first overflow valve is arranged on the first oil inlet body, the second oil inlet body is provided with a P2 port connected with a second pump, and the second oil inlet body is provided with a second overflow valve.
The valve group can realize the serial-parallel operation of the high-pressure pump and the low-pressure pump, and the double pumps are converged when the load is light; and at heavy load, the single pump supplies oil. Therefore, the energy consumption can be reduced, the required motor power is low, and the investment cost is limited.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which 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. In the drawings:
FIG. 1 is a schematic illustration of a five-position six-way valve body for a valve block for series-parallel operation of high and low pressure pumps according to the present invention with a valve stem in a neutral position;
FIG. 2 is a schematic diagram of an oil return bridge for a valve block of a high and low pressure pump operating in series-parallel according to the present invention;
FIG. 3 is a schematic diagram of a check valve bridge for a valve block of a high and low pressure pump operating in series-parallel according to the present invention;
FIG. 4 is a schematic diagram of a five-position six-way valve body for a high and low pressure pump series-parallel operated valve block according to the present invention, wherein the valve stem is reversed forward by one position;
FIG. 5 is a schematic illustration of a five-position six-way valve body for a high and low pressure pump series-parallel operated valve block according to the present invention, wherein the valve stem is commutated two-way forward;
FIG. 6 shows a hydraulic schematic of a valve block for series-parallel operation of high and low pressure pumps according to the present invention;
FIG. 7 is a schematic top view of a multiway valve according to the invention; and
fig. 8 is a schematic side view of a multiway valve according to the invention.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
In the invention, the same oil path structure in different valve bodies is named as an oil path structure with oil ducts and flow path fingers communicated, for example, a first bypass flow path on an oil return through bridge body and a first bypass flow path on a five-position six-way valve body are communicated oil path structures.
Fig. 1-8 illustrate some embodiments according to the invention.
Referring to fig. 1 to 6 in combination, the valve block for serial-parallel operation of high-low pressure pumps of the present invention includes a five-position six-way valve body 10 fixedly disposed at left and right sides of the five-position six-way valve body, an oil return bridge 20 and a check valve bridge 30.
As shown in fig. 1, the five-position six-way valve body 10 is provided with a five-position six-way valve rod 11, a flow passage 12 (also denoted as a flow passage PP) positioned at the axial middle part of the valve rod, two flow passages 13 (also denoted as a flow passage PT) symmetrically arranged left and right with respect to the flow passage PP in the axial direction of the valve rod, two first bypass passages 14 (denoted as a first bypass passage and a second bypass passage), two branch oil passages 15, two working flow passages 16 (also denoted as a flow passage and a flow passage B), two return oil passages 17 (also denoted as a first return oil passage and a second return oil passage), and is further provided with a third oil inlet passage 18, and first check valves 19 are arranged on the flow passages from the third oil inlet passage 18 to the two branch oil passages 15.
As shown in fig. 2, the oil return bridge 20 is provided with a first oil return passage 21, a T1 port 22 communicating with the first oil return passage, a second oil return passage 23, and a T2 port 24 communicating with the second oil return passage, and is further provided with a second oil intake passage 25 (also referred to as an oil intake passage P2), the second oil intake passage P2 communicating with the first bypass passage 26.
As shown in fig. 3, the check valve bridge 30 is provided with a first oil intake passage 31 (also referred to as an oil intake passage P1), a third oil intake passage 32 communicating with the first oil intake passage, a first oil return passage 33, a second oil return passage 34, a second bypass passage 35 communicating with the first oil return passage, a first bypass passage 36, and a second check valve 37 provided on the flow passages of the third oil intake passage 32 to the first bypass passage 36.
The second oil inlet channel P2 is communicated with the flow channel PP, and the flow channel PT is communicated with the second bypass flow channel.
Wherein, the valve rod is as follows when switching over: the first oil inlet channel P1 and the second oil inlet channel P2 return oil to the port T1 and the port T2 for unloading when the valve rod is in the middle position; when the valve rod is reversed forwards by one position, the first oil inlet channel supplies oil to the executing mechanism independently and the second oil inlet channel returns oil to the port T1 for unloading; when the valve rod commutates forwards for two positions, the second oil inlet channel and the first oil inlet channel are used for supplying oil to the executing mechanism after the third oil inlet channel is converged.
With reference to fig. 1 and 6, the unloading of the two pumps in the middle position is realized, an open center loop is realized, when all actuators do not work, the flow from the hydraulic source can pass through the reversing valve to lead to oil with lower pressure loss, and the response characteristic can be faster because the flow is always waiting. Working principle: the valve rod is in the middle position, and oil of the first pump sequentially passes through a first oil inlet passage, a third oil inlet passage, a first one-way valve, a first oil return passage and a second oil return passage, and returns oil from the ports T1 and T2; the oil of the second pump sequentially passes through the second oil inlet channel, the flow channel PP, the flow channel PT, the second bypass flow channel and the first oil return channel, and returns oil from the port T1.
As shown in fig. 4, a single pump supplies oil for realizing heavy load low speed. Working principle: the valve rod is reversed forwards by one position, and oil of the first pump sequentially passes through the first oil inlet channel, the third oil inlet channel, the first one-way valve and the flow channel A to supply oil to the executing mechanism from the working port A. The oil of the second pump sequentially passes through the second oil inlet channel, the flow channel PP, the flow channel PT, the second bypass flow channel and the first oil return channel, and returns oil from the port T1.
As shown in fig. 5, the double pumps merge to achieve a light load and high speed. Working principle: the valve rod is reversed forwards for two positions, and oil of the first pump sequentially passes through the first oil inlet channel, the third oil inlet channel, the first one-way valve and the flow channel A; the oil liquid of the second pump sequentially passes through the second oil inlet passage, the first bypass flow passage and the second one-way valve to the third oil inlet passage 3 to be combined with the first pump for supplying oil.
As shown in fig. 7, the multi-way valve of the present invention includes a first oil inlet body 50, a first reversing valve body 40, a check valve passing bridge body 30, a five-position six-way valve body 10, an oil return passing bridge body 20, a second reversing valve body 60, and a second oil inlet body 70 connected in series by bolts. The oil return bridge body, the five-position six-way valve body and the one-way valve bridge body form a valve group for the serial-parallel operation of the high-pressure pump and the low-pressure pump. Wherein, the P1 mouth of the first oil feed body is connected with first pump, is equipped with first overflow valve on the first oil feed body, and the P2 mouth of the second oil feed body is connected with the second pump, is equipped with the second overflow valve on the second oil feed body.
In the multi-way valve, the first reversing valve body is independently supplied with oil by the first pump, the second reversing valve body is independently supplied with oil by the second pump, and the five-position six-way valve body of the valve group is used for realizing the serial-parallel connection work of the first pump and the second pump.
It should be noted that in other embodiments of the present invention, the valve block described above may be combined with valve plates/bodies of other functions. The tail end of the valve rod of the five-position six-way valve group is provided with an elastic reset mechanism for returning the valve rod to the middle position.
The multi-way valve realizes the serial-parallel operation of the high-pressure pump and the low-pressure pump, and the double pumps are converged when the load is light; and at heavy load, the single pump supplies oil. Therefore, the energy consumption can be reduced, the required motor power is low, and the investment cost is limited.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A valve bank for serial-parallel operation of a high-pressure pump and a low-pressure pump is characterized by comprising a five-position six-way valve body, an oil return passing bridge body and a one-way valve passing bridge body which are fixedly arranged on the left side and the right side of the five-position six-way valve body, wherein
The five-position six-way valve body is provided with a five-position six-way valve rod, a flow channel PP positioned at the axial middle part of the valve rod, two flow channels PT which are symmetrically arranged on the left and right sides of the flow channel PP in the axial direction of the valve rod, two first bypass channels, two branch oil channels, a flow channel A, a flow channel B, a first return oil channel and a second return oil channel, the five-position six-way valve body is also provided with a third oil inlet channel, the flow channels from the third oil inlet channel to the two branch oil channels are provided with a first one-way valve,
the oil return bridge body is provided with a first oil return passage, a T1 port communicated with the first oil return passage, a second oil return passage and a T2 port communicated with the second oil return passage, the oil return bridge body is also provided with a second oil inlet passage P2, the second oil inlet passage P2 is communicated with the first bypass passage,
the one-way valve bridge body is provided with a third oil inlet passage, a first oil inlet passage P1 communicated with the third oil inlet passage, a first oil return passage, a second bypass passage communicated with the first oil return passage, a first bypass passage and a second one-way valve arranged on the passage from the third oil inlet passage to the first bypass passage,
wherein the second oil inlet channel P2 is communicated with the flow channel PP, the flow channel PT of the five-position six-way valve body is communicated with the second bypass flow channel of the one-way valve bridge body,
the first oil inlet channel P1 and the second oil inlet channel P2 return oil to the port T1 and the port T2 for unloading when the valve rod is in the middle position; when the valve rod is reversed forwards by one position, the first oil inlet channel supplies oil to the executing mechanism independently and the second oil inlet channel returns oil to the port T1 for unloading; when the valve rod commutates forwards for two positions, the second oil inlet channel and the first oil inlet channel are used for supplying oil to the executing mechanism after the third oil inlet channel is converged.
2. The valve block for serial-parallel operation of high and low pressure pumps according to claim 1, for a forging machine, a press, an injection molding machine or a truck-mounted crane.
3. The multi-way valve is characterized by comprising a first oil inlet body, a first reversing valve body, a one-way valve bridge passing body, a five-position six-way valve body, an oil return bridge passing body, a second reversing valve body and a second oil inlet body which are sequentially connected in series, wherein the oil return bridge passing body, the five-position six-way valve body and the one-way valve bridge passing body form the valve group for serial-parallel operation of the high-pressure pump according to claim 1, the first oil inlet body is provided with a P1 port connected with a first pump, the first oil inlet body is provided with a first overflow valve, the second oil inlet body is provided with a P2 port connected with a second pump, and the second oil inlet body is provided with a second overflow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096001.5A CN109114254B (en) | 2018-09-19 | 2018-09-19 | Valve group and multi-way valve for serial-parallel operation of high-pressure pump and low-pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096001.5A CN109114254B (en) | 2018-09-19 | 2018-09-19 | Valve group and multi-way valve for serial-parallel operation of high-pressure pump and low-pressure pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109114254A CN109114254A (en) | 2019-01-01 |
| CN109114254B true CN109114254B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811096001.5A Active CN109114254B (en) | 2018-09-19 | 2018-09-19 | Valve group and multi-way valve for serial-parallel operation of high-pressure pump and low-pressure pump |
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| Country | Link |
|---|---|
| CN (1) | CN109114254B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372060A (en) * | 1992-12-22 | 1994-12-13 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic valve assembly |
| CN2844532Y (en) * | 2005-07-19 | 2006-12-06 | 四川长江液压件有限责任公司 | Multi-path switching valve of hydraulic crane |
| CN101373027A (en) * | 2008-08-08 | 2009-02-25 | 锦州市力特缸泵阀液压制造有限公司 | Multi-way change valve |
| CN102674210A (en) * | 2012-05-14 | 2012-09-19 | 浙江海宏液压科技股份有限公司 | Lift converging multiway valve |
| CN203272299U (en) * | 2013-03-20 | 2013-11-06 | 锦州市力特缸泵阀液压制造有限公司 | Double-pump two-way confluence multiple directional control valve |
| CN205745444U (en) * | 2016-05-17 | 2016-11-30 | 华南理工大学 | A kind of valve |
| CN205823776U (en) * | 2016-07-21 | 2016-12-21 | 泸州众大科技液压件有限公司 | A kind of Multi-path electricity hydraulic control valve using oil return pressure reduction to make pilot control |
| CN209213079U (en) * | 2018-09-19 | 2019-08-06 | 合肥长源液压股份有限公司 | A kind of valve group to work in series and parallel for high-low pump and multi-way valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9810244B2 (en) * | 2012-07-19 | 2017-11-07 | Volvo Construction Equipment Ab | Flow control valve for construction machinery |
-
2018
- 2018-09-19 CN CN201811096001.5A patent/CN109114254B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5372060A (en) * | 1992-12-22 | 1994-12-13 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic valve assembly |
| CN2844532Y (en) * | 2005-07-19 | 2006-12-06 | 四川长江液压件有限责任公司 | Multi-path switching valve of hydraulic crane |
| CN101373027A (en) * | 2008-08-08 | 2009-02-25 | 锦州市力特缸泵阀液压制造有限公司 | Multi-way change valve |
| CN102674210A (en) * | 2012-05-14 | 2012-09-19 | 浙江海宏液压科技股份有限公司 | Lift converging multiway valve |
| CN203272299U (en) * | 2013-03-20 | 2013-11-06 | 锦州市力特缸泵阀液压制造有限公司 | Double-pump two-way confluence multiple directional control valve |
| CN205745444U (en) * | 2016-05-17 | 2016-11-30 | 华南理工大学 | A kind of valve |
| CN205823776U (en) * | 2016-07-21 | 2016-12-21 | 泸州众大科技液压件有限公司 | A kind of Multi-path electricity hydraulic control valve using oil return pressure reduction to make pilot control |
| CN209213079U (en) * | 2018-09-19 | 2019-08-06 | 合肥长源液压股份有限公司 | A kind of valve group to work in series and parallel for high-low pump and multi-way valve |
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| Publication number | Publication date |
|---|---|
| CN109114254A (en) | 2019-01-01 |
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