CN210317969U - High-low pressure switching valve - Google Patents
High-low pressure switching valve Download PDFInfo
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- CN210317969U CN210317969U CN201921397551.0U CN201921397551U CN210317969U CN 210317969 U CN210317969 U CN 210317969U CN 201921397551 U CN201921397551 U CN 201921397551U CN 210317969 U CN210317969 U CN 210317969U
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Abstract
The utility model discloses a high-low pressure switching valve, which comprises a valve body and a valve core, wherein a valve cavity extending along a straight line is arranged in the valve body, six oil ports are arranged on the outer side of the valve body, the inner ends of the six oil ports are communicated to the valve cavity, the valve core (2) can be arranged in the valve cavity in a sliding manner along the length direction of the valve cavity, a first annular groove, a second annular groove and a third annular groove are arranged on the outer peripheral surface of the valve core, and a communicating oil duct is arranged in; the valve core can slide to a left position or a right position in the valve cavity, when the valve core is in the left position, the two oil ports are communicated through the first annular groove, the two oil ports are communicated through the second annular groove, and the two oil ports are communicated through the third annular groove; when the valve core is in the right position, the two oil ports are communicated through the first annular groove, the two oil ports are communicated through the second annular groove, and the two oil ports are communicated through the communicating oil duct. The utility model discloses a two-position six-way's spool valve can realize that high-low pressure switches, and its whole size is less, and the cost is lower, and is simple reliable, and the fault point is few, also easily checks break down.
Description
Technical Field
The utility model belongs to the technical field of hydraulic pressure, concretely relates to high-low pressure diverter valve.
Background
In the operation process of the concrete delivery pump, a wider pumping pressure range needs to be output to adapt to different working conditions, and under the condition that the cylinder diameter of the concrete cylinder, the cylinder diameter of the pumping oil cylinder and the pressure of a hydraulic system are the same, high-low pressure conversion is generally adopted to improve the pumping pressure range of the concrete. The high-low pressure switching is realized by changing the connection mode of a pumping hydraulic system to change the position of pressure oil entering a pumping oil cylinder, when the pressure oil enters a pushing piston from a rod cavity, the outlet pressure of the concrete delivery pump is smaller due to smaller action area, and the speed is higher, and the pumping mode is low-pressure pumping; when the pressure oil pushes the piston from the rodless cavity, the outlet pressure of the concrete delivery pump is larger and the speed is slower due to the larger action area, and the pumping mode is high-pressure pumping.
The concrete pump usually comprises two pumping cylinders which work in cooperation with each other, and when the concrete pump is in a low-pressure pumping state, rodless cavities of the two pumping cylinders are communicated, and when the concrete pump is in a high-pressure pumping state, rod cavities of the two pumping cylinders are communicated. In the pumping process, high-pressure and low-pressure switching is often required, and a common three-position four-way valve or two-position three-way valve cannot realize the function independently. In order to meet the switching requirement of pumping high and low pressure, a directional valve or a logic valve is usually adopted to realize the switching requirement, and the following three common schemes are adopted: firstly, the functions of high-low pressure switching and main reversing are realized by utilizing a plurality of two-way logic valves; secondly, switching between high pressure and low pressure of an M-shaped main reversing valve and a two-way logic valve is realized; and thirdly, respectively realizing high-pressure and low-pressure switching by using the structural forms of two large-flow slide valves.
In the first and second schemes, in the form of a plurality of two-way logic valves or the form of high-low pressure switching and reversing of one M-type main reversing valve and one two-way logic valve, when the flow rate is increased, the system has large pressure loss, serious heating, and is not beneficial to energy conservation and emission reduction, and the like; in the third scheme, the scheme of two large-flow slide valves adopts an O-shaped function slide valve, the reversing impact of the system is large, and all the schemes need to adopt an independent logic valve to communicate the communication cavity, so that the system is complex.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the above technical problems, the utility model provides a high-low pressure diverter valve.
The purpose of the utility model is realized through the following technical scheme:
the high-low pressure switching valve comprises a valve body and a valve core, wherein a valve cavity extending along a straight line is arranged in the valve body, a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port and a sixth oil port are arranged at intervals outside the valve body, the inner ends of the first oil port, the second oil port, the third oil port, the fourth oil port, the fifth oil port and the sixth oil port are all communicated with the valve cavity, the valve core can be arranged in the valve cavity in a sliding mode along the length direction of the valve cavity, the outer peripheral surface of the valve core is matched with the wall surface of the valve cavity in a sliding and sealing mode, a first annular groove, a second annular groove and a third annular groove are sequentially arranged on the outer peripheral surface of the valve core at intervals along the length direction, a communication oil duct is arranged in; the valve core can slide to a left position or a right position in the valve cavity, when the valve core is in the left position, the second oil port is communicated with the fifth oil port through the first annular groove, the third oil port is communicated with the fourth oil port through the second annular groove, and the first oil port is communicated with the sixth oil port through the third annular groove; when the valve core is in the right position, the second oil port is communicated with the fourth oil port through the first annular groove, the first oil port is communicated with the third oil port through the second annular groove, and the fifth oil port is communicated with the sixth oil port through the communication oil duct.
As a further improvement, a first annular communicating groove and a second annular communicating groove which correspond to one end and the other end of the communicating oil passage respectively are arranged on the outer peripheral surface of the valve core.
As a further improvement, one end and the other end of the communicating oil duct are both provided with a plurality of oil ports, and the plurality of oil ports are circumferentially arranged on the outer peripheral surface of the valve core at intervals.
As a further improvement, one end and the other end of the communicating oil duct are respectively provided with four oil ports, and the four oil ports are uniformly arranged on the peripheral surface of the valve core at intervals along the circumferential direction.
As a further improvement, a raised line extending along the length direction is arranged on the peripheral surface of the valve core, and a sliding groove matched with the raised line is formed on the wall surface of the valve cavity.
As a further improvement, a first annular communicating groove and a second annular communicating groove which correspondingly form one end and the other end of the communicating oil passage are arranged on the outer peripheral surface of the valve core.
As a further improvement, the valve cavity penetrates through the valve body, and cover plates with control oil holes are arranged at two ends of the valve cavity of the valve body.
As a further improvement, a return spring is arranged between one cover plate and the valve core.
As a further improvement, the first oil port and the second oil port are arranged on one side of the valve body, and the third oil port, the fourth oil port, the fifth oil port and the sixth oil port are arranged on the other side of the valve body.
As a further improvement, a sealing ring is arranged at the sliding sealing matching position between the peripheral surface of the valve core and the wall surface of the valve cavity.
As a further improvement, a plurality of sealing ring grooves are formed in the outer peripheral surface of the valve core, and the sealing rings are arranged in the sealing ring grooves.
The utility model provides a high-low pressure diverter valve, including valve body and case, be provided with the valve pocket that extends along the straight line in the valve body, the valve body outside interval is provided with the first hydraulic fluid port, second hydraulic fluid port, third hydraulic fluid port, fourth hydraulic fluid port, fifth hydraulic fluid port, sixth hydraulic fluid port that the inner all communicates to in the valve pocket, the case can be followed valve pocket length direction and set up in the valve pocket with sliding, the outer peripheral face of case and the wall sliding seal cooperation of valve pocket, the outer peripheral face of case has set up first ring channel, second ring channel, third ring channel along length direction interval in proper order, is provided with the intercommunication oil duct in the case, the one end setting of intercommunication oil duct is on the outer peripheral face that the case is close to the one end of first ring channel, and the other end setting of intercommunication oil duct is on the outer peripheral face; the valve core can slide to a left position or a right position in the valve cavity, when the valve core is in the left position, the second oil port is communicated with the fifth oil port through the first annular groove, the third oil port is communicated with the fourth oil port through the second annular groove, and the first oil port is communicated with the sixth oil port through the third annular groove; when the valve core is in the right position, the second oil port is communicated with the fourth oil port through the first annular groove, the first oil port is communicated with the third oil port through the second annular groove, and the fifth oil port is communicated with the sixth oil port through the communication oil duct. The utility model discloses a two-position six-way's spool valve can realize that high-low pressure switches, and its whole size is less, and the cost is lower, and is simple reliable, and the fault point is few, also easily checks break down.
Drawings
The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.
Fig. 1 is the schematic diagram of the high-low pressure switching valve of the present invention when the valve core is in the left position.
Fig. 2 is a schematic diagram of the valve core of the high-low pressure switching valve of the present invention when in the right position.
Fig. 3 is a schematic structural diagram of the valve element of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.
Combine fig. 1 to fig. 3 shown, the embodiment of the utility model provides a high-low pressure diverter valve, including valve body 1 and case 2, be provided with the valve chamber 3 that extends along the straight line in the valve body 1, 1 outside interval of valve body is provided with the first hydraulic fluid port PA, second hydraulic fluid port PB, third hydraulic fluid port PH1, fourth hydraulic fluid port PH2, fifth hydraulic fluid port PL1, sixth hydraulic fluid port PL2 that the inner all communicates to the valve chamber 3, wherein first hydraulic fluid port PA, second hydraulic fluid port PB are used for connecting two work hydraulic fluid ports of switching-over valve respectively, third hydraulic fluid port PH1, fourth hydraulic fluid port PH2 are used for connecting the rodless chamber of two pump cylinders respectively, fifth hydraulic fluid port PL1, sixth hydraulic fluid port PL2 are used for connecting the rod chamber that has of two pump cylinders respectively.
The outer peripheral surface of the valve core 2 is sequentially provided with a first annular groove 21, a second annular groove 22 and a third annular groove 23 at intervals from left to right along the length direction, a communication oil duct 24 is arranged in the valve core 2, one end of the communication oil duct 24 is arranged on the outer peripheral surface of the left end of the valve core 2, namely one end close to the first annular groove 21, and the other end of the communication oil duct 24 is arranged on the outer peripheral surface of the valve core 2 between the second annular groove 22 and the third annular groove 23.
The valve core 2 can slide to the left position or the right position in the valve cavity 3. When the valve core 2 is in the left position, the second port PB is communicated with the fifth port PL1 through the first annular groove 21, the third port PH1 is communicated with the fourth port PH2 through the second annular groove 22, the first port PA is communicated with the sixth port PL2 through the third annular groove 23, and the valve core is in a low-pressure working condition at this time; when the valve core 2 is in the right position, the second port PB is communicated with the fourth port PH2 through the first annular groove 21, the first port PA is communicated with the third port PH1 through the second annular groove 22, and the fifth port PL1 is communicated with the sixth port PL2 through the communication oil passage 24, and is in a high-pressure working condition at this time.
The embodiment of the utility model provides an adopt the spool valve of a two-position six-way to realize that high-low pressure switches, can realize high-low pressure conversion through the slip of case in the valve pocket, the operation process of the high-low pressure conversion of simplification, and its overall dimension is less, and the cost is lower, and is simple reliable, and the fault point is few, also easily troubleshooting of breaking down.
As a further preferred embodiment, as shown in fig. 3, the valve body 2 is provided with a first annular communication groove 25 and a second annular communication groove 26 on the outer peripheral surface thereof, which correspond to one end and the other end of the communication oil passage 24, respectively, and the first annular communication groove 25 and the second annular communication groove 26 increase the opening area of the two ends of the communication oil passage 24, ensure the communication reliability with the fifth oil port PL1 and the sixth oil port PL2, and reduce the pressure loss. One end and the other end of the communication oil duct 24 are provided with a plurality of oil ports, and the plurality of oil ports are circumferentially arranged on the outer peripheral surface of the valve element 2 at intervals. One end and the other end of the communication oil duct 24 are provided with four oil ports, and the four oil ports are evenly arranged on the outer peripheral surface of the valve element 2 at intervals along the circumferential direction.
In a more preferred embodiment, a protrusion extending in the longitudinal direction is provided on the outer peripheral surface of the valve body 2, and a slide groove that fits the protrusion is formed on the wall surface of the valve chamber 3. Thus, the valve core can be prevented from rotating when sliding in the valve cavity.
In a further preferred embodiment, the valve cavity 3 penetrates the valve body 1, the valve body 1 is provided with cover plates 4 with control oil holes 41 at two ends of the valve cavity 3, a return spring 5 is arranged between one of the cover plates 4 and the valve core 2, the return spring 5 can enable the valve core to be in a left position or a right position in the valve cavity, the control oil hole 41 of the cover plate 4 is connected with an oil tank, and the control oil hole 41 of the other cover plate 4 is connected with a control oil source to realize left-right position switching.
As a further preferred embodiment, the first port PA and the second port PB are disposed at one side of the valve body 1, and the third port PH1, the fourth port PH2, the fifth port PL1 and the sixth port PL2 are disposed at the other side of the valve body 1, so that connection of an oil pipe is facilitated and the volume is relatively small.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore should not be construed as limiting the scope of the invention.
In conclusion, although the present invention has been described with reference to the preferred embodiments, it should be noted that, although various changes and modifications can be made by those skilled in the art, unless such changes and modifications depart from the scope of the present invention, they should be construed as being included therein.
Claims (10)
1. A high-low pressure diverter valve which characterized in that: the oil-water separator comprises a valve body (1) and a valve core (2), wherein a valve cavity (3) extending along a straight line is arranged in the valve body (1), a first oil Port (PA), a second oil Port (PB), a third oil port (PH1), a fourth oil port (PH2), a fifth oil port (PL1) and a sixth oil port (PL2) are arranged at intervals outside the valve body (1), the valve core (2) can be arranged in the valve cavity (3) in a sliding mode along the length direction of the valve cavity (3), the outer peripheral surface of the valve core (2) is matched with the wall surface of the valve cavity (3) in a sliding and sealing mode, a first annular groove (21), a second annular groove (22) and a third annular groove (23) are sequentially arranged on the outer peripheral surface of the valve core (2) along the length direction at intervals, a communication oil duct (24) is arranged in the valve core (2), one end of the communication oil duct (24) is arranged on the outer peripheral surface of one end, close, the other end of the communication oil duct (24) is arranged on the outer peripheral surface of the valve core (2) between the second annular groove (22) and the third annular groove (23);
the valve core (2) can slide to a left position or a right position in the valve cavity (3), when the valve core (2) is in the left position, the second oil Port (PB) is communicated with the fifth oil port (PL1) through a first annular groove (21), the third oil port (PH1) is communicated with the fourth oil port (PH2) through a second annular groove (22), and the first oil Port (PA) is communicated with the sixth oil port (PL2) through a third annular groove (23); when the valve core (2) is in the right position, the second oil Port (PB) is communicated with the fourth oil port (PH2) through the first annular groove (21), the first oil Port (PA) is communicated with the third oil port (PH1) through the second annular groove (22), and the fifth oil port (PL1) is communicated with the sixth oil port (PL2) through the communication oil duct (24).
2. A high-low pressure switching valve according to claim 1, characterized in that: and a first annular communication groove (25) and a second annular communication groove (26) which correspond to one end and the other end of the communication oil channel (24) respectively are formed in the outer peripheral surface of the valve core (2).
3. A high-low pressure switching valve according to claim 2, characterized in that: one end and the other end of the communication oil duct (24) are provided with a plurality of oil ports, and the plurality of oil ports are arranged on the outer peripheral surface of the valve core (2) at intervals along the circumferential direction.
4. A high-low pressure switching valve according to claim 3, wherein: one end and the other end of the communication oil duct (24) are provided with four oil ports, and the four oil ports are uniformly arranged on the outer peripheral surface of the valve core (2) at intervals along the circumferential direction.
5. A high-low pressure switching valve according to claim 1, characterized in that: the valve is characterized in that a protruding strip extending along the length direction is arranged on the outer peripheral surface of the valve core (2), and a sliding groove matched with the protruding strip is formed on the wall surface of the valve cavity (3).
6. The high-low pressure switching valve according to any one of claims 1 to 5, characterized in that: the valve cavity (3) penetrates through the valve body (1), and cover plates (4) with control oil holes (41) are arranged at two ends of the valve cavity (3) of the valve body (1).
7. The high-low pressure switching valve according to claim 6, characterized in that: a return spring (5) is arranged between one cover plate (4) and the valve core (2).
8. The high-low pressure switching valve according to any one of claims 1 to 5, characterized in that: the first oil Port (PA) and the second oil Port (PB) are arranged on one side of the valve body (1), and the third oil port (PH1), the fourth oil port (PH2), the fifth oil port (PL1) and the sixth oil port (PL2) are arranged on the other side of the valve body (1).
9. The high-low pressure switching valve according to any one of claims 1 to 5, characterized in that: and a sealing ring is arranged at the sliding seal matching position between the peripheral surface of the valve core (2) and the wall surface of the valve cavity (3).
10. A high-low pressure switching valve according to claim 9, wherein: the valve is characterized in that a plurality of sealing ring grooves (27) are formed in the outer peripheral surface of the valve core (2), and the sealing rings are arranged in the sealing ring grooves (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921397551.0U CN210317969U (en) | 2019-08-27 | 2019-08-27 | High-low pressure switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921397551.0U CN210317969U (en) | 2019-08-27 | 2019-08-27 | High-low pressure switching valve |
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| Publication Number | Publication Date |
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| CN210317969U true CN210317969U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921397551.0U Active CN210317969U (en) | 2019-08-27 | 2019-08-27 | High-low pressure switching valve |
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| CN (1) | CN210317969U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113398621A (en) * | 2021-06-22 | 2021-09-17 | 浙江凯德化工有限公司 | Self-control condenser for fractionation and fractionation method thereof |
| CN113398615A (en) * | 2021-06-22 | 2021-09-17 | 浙江凯德化工有限公司 | Fractionation system and fractionation method thereof |
| CN113398616A (en) * | 2021-06-22 | 2021-09-17 | 浙江凯德化工有限公司 | Multi-fraction fractionation system and fractionation method thereof |
-
2019
- 2019-08-27 CN CN201921397551.0U patent/CN210317969U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113398621A (en) * | 2021-06-22 | 2021-09-17 | 浙江凯德化工有限公司 | Self-control condenser for fractionation and fractionation method thereof |
| CN113398615A (en) * | 2021-06-22 | 2021-09-17 | 浙江凯德化工有限公司 | Fractionation system and fractionation method thereof |
| CN113398616A (en) * | 2021-06-22 | 2021-09-17 | 浙江凯德化工有限公司 | Multi-fraction fractionation system and fractionation method thereof |
| CN113398621B (en) * | 2021-06-22 | 2022-03-08 | 浙江凯德化工有限公司 | Self-control condenser for fractionation and fractionation method thereof |
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