CN210889521U - Integral multichannel conversion valve - Google Patents
Integral multichannel conversion valve Download PDFInfo
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- CN210889521U CN210889521U CN201921421560.9U CN201921421560U CN210889521U CN 210889521 U CN210889521 U CN 210889521U CN 201921421560 U CN201921421560 U CN 201921421560U CN 210889521 U CN210889521 U CN 210889521U
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Abstract
The utility model discloses an integral multi-way reversing valve, which comprises a valve body, a one-way valve arranged in the valve body between an oil inlet and an oil return port, and a plurality of valve rods; a high-pressure oil inlet channel, two low-pressure oil return channels and a plurality of reversing valve chutes are arranged in the valve body; the two low-pressure oil return channels are connected with the oil return port; each reversing valve sliding chute is connected with the high-pressure oil inlet channel and the two low-pressure oil return channels, each reversing valve sliding chute is connected with the two working oil port channels and the two middle-position oil drainage channels, and the oil inlet, the middle-position oil drainage channels of each reversing valve sliding chute and the middle-position pressure output port in the valve body are sequentially connected; each valve rod is slidably arranged in a respective reversing valve chute; the utility model has the advantages of compact structure, small, do not have leakage, loss of pressure are little to avoid the valve rod to remove and produce the jamming, guarantee the stationarity and the reliability of multiple unit valve work, can improve the work efficiency.
Description
Technical Field
The utility model relates to a multichannel switching-over valve.
Background
The existing multi-way reversing valve is formed by connecting a plurality of reversing valve plates through bolts penetrating through valve bodies, and a sealing element is required to be arranged on an oil path between every two adjacent reversing valve plates; the disadvantages are: 1. the leakage phenomenon is easy to generate among the valve plates, and the reliability of the multi-way valve is poor; 2. the valve block has a not compact structure and a large volume; 3. the oil path aperture and the coaxiality of each valve plate are difficult to ensure to be consistent, the throttling phenomenon exists, the oil inlet pressure loss and the oil return pressure loss are large, and the good working state is difficult to ensure; 4. valve hole deformation is generated between the valve plates due to the tightening of the serially-installed bolts, so that clamping stagnation is generated when the valve rod moves, and the working stability and reliability of the multi-way valve cannot be ensured; 5. the efficiency of assembling the valve plates is low during mass production.
Disclosure of Invention
The utility model aims at prior art's the aforesaid is not enough, provides an integral multichannel switching-over valve, and it has compact structure, small, does not have the advantage that leak, loss of pressure are little to avoid the valve rod to remove and produce the jamming, guarantee the stationarity and the reliability of multiple unit valve work, and process time reduces when mass production, can improve the work efficiency.
In order to achieve the above object, the utility model discloses an integral multiple directional control valve, including the valve body that is equipped with oil inlet and oil return opening, locate the check valve in the valve body between oil inlet and oil return opening, more than two valve rods, locate the handle and the reset element at the valve rod both ends; it is characterized in that a high-pressure oil inlet channel, two low-pressure oil return channels and more than two reversing valve chutes which are connected with the back cavity of the one-way valve are also arranged in the valve body; the two low-pressure oil return channels are connected with the oil return port; each reversing valve sliding chute is connected with the high-pressure oil inlet channel and the two low-pressure oil return channels, each reversing valve sliding chute is connected with two working oil port channels and two middle oil drainage channels, the two working oil port channels of each reversing valve sliding chute are positioned on two sides of the high-pressure oil inlet channel and between the two low-pressure oil return channels, one middle oil drainage channel of each two adjacent reversing valve sliding chutes is connected through a connecting oil way, the other middle oil drainage channel of the reversing valve sliding chute positioned at the forefront is connected with the oil inlet, and the other middle oil drainage channel of the reversing valve sliding chute positioned at the rearmost is connected with a middle pressure output port in the valve body; each valve rod is slidably arranged in a respective reversing valve chute;
the utility model discloses a valve body is integral, and the relevant oil duct of check valve and each switching-over valve all is located in the valve body, compares in the multiple unit valve that several switching-over valve blocks formed through the bolt hookup, has compact structure, small, the advantage of no leakage, and avoided throttle phenomenon and the valve opening deformation that the cluster dress bolt was screwed up and is produced, no loss of pressure, can guarantee good operating condition, and make the valve rod not have the jamming when removing, realize the stationarity and the reliability of multiple unit valve work, and assemble simply, the process time reduces when mass production, can improve the work efficiency;
as a further improvement of the utility model, the other meso-position oil drainage channel of the reversing valve chute positioned at the rearmost part is connected with a low-pressure oil return channel through an oil return hole, and a valve is arranged in the oil return hole; when each valve rod is positioned at the middle position, the valve is closed, and the middle position pressure output port can output high-pressure oil to other hydraulic elements; if the valve is opened, the middle position load relief can be realized through the oil return port;
as a further improvement of the utility model, an auxiliary oil inlet and an auxiliary oil return port are further arranged in the valve body, the auxiliary oil inlet is connected with the oil inlet, one end of each of the two low-pressure oil return channels is connected, and the auxiliary oil return port is connected with one of the low-pressure oil return channels; an auxiliary oil inlet and an auxiliary oil return port are added, so that the pipeline connection is convenient;
as a further improvement of the utility model, an overflow valve is arranged in the valve body between the one-way valve and the oil return port; the system pressure can be controlled;
to sum up, the utility model has the advantages of compact structure, small, no leakage, loss of pressure are little to avoid the valve rod to remove and produce the jamming, guarantee the stationarity and the reliability of multiple unit valve work, and process time reduces when mass production, can improve the work efficiency.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a hydraulic schematic diagram of the embodiment of the present invention.
Fig. 4 is a front view of the valve body of fig. 1.
Fig. 5 is a left side view of fig. 4.
Fig. 6 is a right side view of fig. 4.
Fig. 7 is a bottom view of fig. 4.
Fig. 8 is a cross-sectional view taken along line K-K of fig. 7.
FIG. 9 is a cross-sectional view of the oil intake portion with the valve stem in the neutral position.
FIG. 10 is a cross-sectional view of the oil intake portion with the valve stem in an alternate orientation.
FIG. 11 is a cross-sectional view of the oil intake portion with the valve stem in another alternate orientation.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 8, an integral multi-way reversing valve of this embodiment includes a valve body 1, a check valve 4 and an overflow valve 8 which are arranged in the valve body 1, seven valve rods 5, handles 6 and a reset element 7 which are arranged at two ends of each valve rod 5, the valve body 1 is provided with an oil inlet 2(P), an oil return port 3(T), an auxiliary oil inlet 12(P1) and an auxiliary oil return port 13(T1), the oil inlet 2 is connected with the auxiliary oil inlet 12, and the check valve 4 and the overflow valve 8 are located between the oil inlet 2 and the oil return port 3; a high-pressure oil inlet channel 9, two low-pressure oil return channels 10 and 11 and seven reversing valve chutes 14 which are connected with the back cavity of the one-way valve are also arranged in the valve body 1; the two low-pressure oil return channels 10 and 11 are connected with the oil return port 3, one ends of the two low-pressure oil return channels 10 and 11 are connected, and the auxiliary oil return port 13 is connected with the low-pressure oil return channel 10;
each direction valve sliding groove 14 is connected with a high-pressure oil inlet channel 9 and two low-pressure oil return channels 10 and 11, each direction valve sliding groove 14 is connected with two working oil port channels A1 and B1 or A2 and B2 or A3 and B3 or A4 and B4 or A5 and B5 or A6 and B6 or A7 and B7, the two working oil port channels of each direction valve sliding groove 14 are positioned at two sides of the high-pressure oil inlet channel 9 and positioned between the two low-pressure oil return channels 10 and 11, each direction valve sliding groove 14 is connected with two middle oil drain channels, one middle oil drain channel 15 of each two adjacent direction valve sliding grooves 14 is connected through a connecting oil passage, the other middle oil drain channel 16 of the direction valve sliding groove 14 positioned at the forefront is connected with the oil inlet 2, the other middle oil drain channel 17 of the direction valve sliding groove 14 positioned at the rearmost is connected with a middle pressure output port 18 (J) in the valve body 1, and the other oil drain channel 17 of the direction valve sliding groove 14 positioned at the rearmost middle position is connected with the low-pressure oil return channel 10 through, a valve 20 is arranged in the oil return hole 19; each valve rod 5 is slidably arranged in a respective reversing valve sliding groove 14, and each valve rod 5 is provided with an inner groove for opening and closing each channel;
during the use, when the hydraulic pump with certain flow fuel feeding, fluid gets into the oil inlet 2 of valve body 1:
1. as shown in fig. 9, when each valve rod 5 is in the neutral position (not operated), the oil passes through the neutral oil drainage channels 16, 15 and 17 to the neutral pressure output port 18, and high-pressure oil can be output to other hydraulic components; if the valve 20 is opened, the middle-position load relief can be realized through the oil return port 3;
2. when the valve rods 5 are in the direction change positions at two sides, as shown in fig. 10 and 11, the middle oil drainage channel 16 is cut off due to the movement of the valve rods 5, high-pressure oil overcomes the spring force to push the check valve 4 open to enter the high-pressure oil inlet channel 9 and enter the working oil port channel A (or B) through the valve rod inner groove to control the execution element; the working oil port of the passage B (or A) is communicated with the low-pressure oil return passages 10 and 11 through the valve rod inner groove.
The utility model discloses a valve body 1 is integral, and the relevant oil duct of check valve 4, overflow valve 8 and each switching-over valve all locates in the valve body 1, compare in the multiple unit valve that several switching-over valve blocks formed through the bolt coupling, have compact structure, small, no sealing member, no leakage's advantage, and avoided throttling phenomenon and the valve opening deformation that the tandem bolt was screwed up and is produced, no loss of pressure, can guarantee good operating condition, and make valve rod 5 have no jamming when removing, realize the stationarity and the reliability of multiple unit valve work, and the equipment is simple, and the processing time reduces when mass production, can improve the work efficiency; an auxiliary oil inlet 12 and an auxiliary oil return port 13 are additionally arranged, so that the pipeline connection is convenient; the relief valve 8 may control the system pressure.
Claims (4)
1. An integral multi-way reversing valve comprises a valve body provided with an oil inlet and an oil return port, a one-way valve arranged in the valve body between the oil inlet and the oil return port, more than two valve rods, handles arranged at two ends of the valve rods and a reset element; it is characterized in that a high-pressure oil inlet channel, two low-pressure oil return channels and more than two reversing valve chutes which are connected with the back cavity of the one-way valve are also arranged in the valve body; the two low-pressure oil return channels are connected with the oil return port; each reversing valve sliding chute is connected with the high-pressure oil inlet channel and the two low-pressure oil return channels, each reversing valve sliding chute is connected with two working oil port channels and two middle oil drainage channels, the two working oil port channels of each reversing valve sliding chute are positioned on two sides of the high-pressure oil inlet channel and between the two low-pressure oil return channels, one middle oil drainage channel of each two adjacent reversing valve sliding chutes is connected through a connecting oil way, the other middle oil drainage channel of the reversing valve sliding chute positioned at the forefront is connected with the oil inlet, and the other middle oil drainage channel of the reversing valve sliding chute positioned at the rearmost is connected with a middle pressure output port in the valve body; each valve rod is slidably arranged in the corresponding reversing valve sliding groove.
2. An integral multiple directional control valve according to claim 1, wherein: and the other middle oil drainage channel of the reversing valve chute positioned at the rearmost part is connected with a low-pressure oil return channel through an oil return hole, and a valve is arranged in the oil return hole.
3. An integral multiple directional control valve according to claim 1 or 2, wherein: the valve body is also internally provided with an auxiliary oil inlet and an auxiliary oil return port, the auxiliary oil inlet is connected with the oil inlet, one ends of the two low-pressure oil return channels are connected, and the auxiliary oil return port is connected with one of the low-pressure oil return channels.
4. A unitary multi-way reversing valve according to claim 3, wherein: an overflow valve is also arranged in the valve body between the one-way valve and the oil return port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921421560.9U CN210889521U (en) | 2019-08-29 | 2019-08-29 | Integral multichannel conversion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921421560.9U CN210889521U (en) | 2019-08-29 | 2019-08-29 | Integral multichannel conversion valve |
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| Publication Number | Publication Date |
|---|---|
| CN210889521U true CN210889521U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921421560.9U Active CN210889521U (en) | 2019-08-29 | 2019-08-29 | Integral multichannel conversion valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425191A (en) * | 2019-08-29 | 2019-11-08 | 四川长江液压件有限责任公司 | A kind of integral multi-way reversing valve |
| CN114623257A (en) * | 2022-03-17 | 2022-06-14 | 浙江海宏液压科技股份有限公司 | Working valve plate and multi-way valve |
-
2019
- 2019-08-29 CN CN201921421560.9U patent/CN210889521U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425191A (en) * | 2019-08-29 | 2019-11-08 | 四川长江液压件有限责任公司 | A kind of integral multi-way reversing valve |
| CN114623257A (en) * | 2022-03-17 | 2022-06-14 | 浙江海宏液压科技股份有限公司 | Working valve plate and multi-way valve |
| CN114623257B (en) * | 2022-03-17 | 2023-12-26 | 浙江海宏液压科技股份有限公司 | Working valve plate and multi-way valve |
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