CN110206568B - Multifunctional integral reversing valve group - Google Patents
Multifunctional integral reversing valve group Download PDFInfo
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- CN110206568B CN110206568B CN201910655760.9A CN201910655760A CN110206568B CN 110206568 B CN110206568 B CN 110206568B CN 201910655760 A CN201910655760 A CN 201910655760A CN 110206568 B CN110206568 B CN 110206568B
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- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims description 164
- 238000003825 pressing Methods 0.000 claims description 96
- 238000007789 sealing Methods 0.000 claims description 41
- 238000004891 communication Methods 0.000 claims description 32
- 230000006835 compression Effects 0.000 claims description 29
- 238000007906 compression Methods 0.000 claims description 29
- 239000008358 core component Substances 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 239000007779 soft material Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 description 48
- 238000000034 method Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000000306 component Substances 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a multifunctional integral reversing valve group which comprises a valve body, a first valve core assembly, a second valve core assembly, a third valve core assembly, a first control mechanism for controlling the first valve core assembly, a second control mechanism for controlling the second valve core assembly and a third control mechanism for controlling the third valve core assembly, wherein the valve body is provided with a first valve cavity for accommodating the first valve core assembly, a second valve cavity for accommodating the second valve core assembly and a third valve cavity for accommodating the third valve core assembly, the first valve cavity is communicated with the second valve cavity and the third valve cavity, one first valve cavity is arranged, and a plurality of second valve cavities and a plurality of third valve cavities are arranged. According to the multifunctional integral reversing valve group, the valve body is arranged into an integral structure, each valve core and the corresponding operating mechanism are integrated on the same valve body, the risk of oil leakage of the valve body is reduced, and the working safety of a hydraulic system of a hydraulic support is ensured.
Description
Technical Field
The invention belongs to a fully-mechanized coal mining hydraulic support, and particularly relates to a multifunctional integral reversing valve group.
Background
Under the large environment that comprehensive mining of coal mines is increasingly developed towards automation and high efficiency, large mining height and high-impedance brackets are increasingly popularized, and corresponding control valves are also gradually developed from the previous small flow to the current medium flow and large flow. In the coal industry, reversing valves are also known as pilot or control valves. In the hydraulic system of the hydraulic support, the reversing valve controls the direction of liquid flow, so that different actions such as lifting, pushing and pulling of the hydraulic support are realized.
The existing multifunctional reversing valve group mainly comprises a plurality of sheet type reversing valves, and oil inlet and oil outlet arranged on the valve body of each sheet type reversing valve are communicated. The problems with this structure are mainly:
1. the structure is complex, and the assembly is not easy;
2. the connection part of each sheet-type reversing valve is unreliable in sealing, oil is easy to leak, and the working safety of a hydraulic system of the hydraulic support can be influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the multifunctional integral reversing valve group, and aims to reduce the risk of leakage of oil.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the multifunctional integral reversing valve group comprises a valve body, a first valve core assembly, a second valve core assembly, a third valve core assembly, a first control mechanism for controlling the first valve core assembly, a second control mechanism for controlling the second valve core assembly and a third control mechanism for controlling the third valve core assembly, wherein the valve body is provided with a first valve cavity for accommodating the first valve core assembly, a second valve cavity for accommodating the second valve core assembly and a third valve cavity for accommodating the third valve core assembly, the first valve cavity is communicated with the second valve cavity and the third valve cavity, one first valve cavity is arranged, and a plurality of second valve cavities and a plurality of third valve cavities are arranged.
The first valve cavity is positioned between the second valve cavity and the third valve cavity, and is communicated with a main liquid inlet hole and a main liquid return hole which are arranged on the valve body.
The first valve core assembly comprises a first liquid return valve sleeve, a first liquid inlet valve sleeve connected with the first liquid return valve sleeve, a first valve core, a first valve seat sleeved on the first valve core and a first compression bar matched with the first valve core to realize sealing, and the first compression bar is provided with a containing hole for the first valve core to be inserted.
The first operating mechanism comprises a first shell arranged on the valve body, a first pressing head rotatably arranged in the first shell, a first handle fixedly connected with the first pressing head and used for operating the first pressing head to rotate, and a first pressing block rotatably arranged in the first shell and clamped between the first pressing head and the first pressing rod, wherein the rotation center line of the first pressing block is parallel to the length direction of the valve body.
The first operating mechanism further comprises an auxiliary pressing block arranged in the first shell, a limiting pin used for limiting the auxiliary pressing block is arranged on the valve body, and the auxiliary pressing block is located between the limiting pin and the first pressure head.
The second valve core assembly comprises a second compression bar, a second liquid return valve sleeve, a second liquid inlet valve sleeve, a middle valve sleeve, a second valve core and a second valve pad clamped between the second liquid inlet valve sleeve and the middle valve sleeve, wherein the second valve pad is sleeved on the second valve core and matched with the second valve core to realize sealing, and the second valve pad is made of soft materials.
One end of the middle valve sleeve is connected with the second liquid inlet valve sleeve, the other end of the middle valve sleeve is connected with the second liquid return valve sleeve through a locking mechanism, the locking mechanism is arranged to prevent the middle valve sleeve and the second liquid return valve sleeve from rotating relatively, the middle valve sleeve is provided with a containing groove for containing the locking mechanism, and the second liquid return valve sleeve is provided with a locking groove for embedding the locking mechanism.
The locking mechanism comprises a locking piece embedded in the locking groove and the accommodating groove and a pressing piece for applying pressure to the locking piece to fix the locking piece, the locking piece is spherical, the locking groove is a spherical groove, and the pressing piece is a screw in threaded connection with the middle valve sleeve.
The third valve core assembly comprises a third compression bar, a third liquid return valve sleeve, a third liquid inlet valve sleeve connected with the third liquid return valve sleeve, a third valve core, a third valve seat sleeved on the third valve core and a third valve pad clamped between the third liquid inlet valve sleeve and the third valve seat, the third valve pad is matched with the third valve core to realize sealing, and the third valve pad is made of soft material.
The number of the second valve cavities is 14, and the number of the third valve cavities is 6.
According to the multifunctional integral reversing valve group, the valve body is arranged into an integral structure, each valve core and the corresponding operating mechanism are integrated on the same valve body, the risk of oil leakage of the valve body is reduced, and the working safety of a hydraulic system of a hydraulic support is ensured.
Drawings
The present specification includes the following drawings, the contents of which are respectively:
FIG. 1 is a front view of a multi-functional integral reversing valve set of the present invention;
FIG. 2 is a top view of the multi-functional integral reversing valve set of the present invention;
FIG. 3 is a schematic diagram of the operation of the multi-functional integral reversing valve set of the present invention;
FIG. 4 is a schematic structural view of the valve body;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is a cross-sectional view B-B of FIG. 4;
FIG. 7 is a cross-sectional view of C-C of FIG. 4;
fig. 8 is a sectional view at the first reversing valve unit;
FIG. 9 is a cross-sectional view of the first spool assembly;
Fig. 10 is a sectional view at the second reversing valve unit;
FIG. 11 is a cross-sectional view of the second spool assembly;
fig. 12 is a sectional view at the third reversing valve unit;
FIG. 13 is a cross-sectional view of a third valve core assembly;
Marked in the figure as: 1. a valve body; 2. a first valve chamber; 3. a second valve chamber; 4. a third valve chamber; 5. a first reversing valve unit; 501. a first compression bar; 502. a first return valve sleeve; 503. a first valve seat; 504. a first inlet valve housing; 505. a first valve core; 506. a first spring; 507. a liquid passing hole; 508. a liquid passing hole; 509. a first handle; 510. a first ram; 511. a first briquette; 512. a first housing; 513. a limiting pin; 514. auxiliary briquetting; 6. a second reversing valve unit; 601. a second compression bar; 602. a second liquid return valve sleeve; 603. a second valve pad; 604. a second inlet valve housing; 605. a second valve core; 606. a second spring; 607. a liquid passing hole; 608. a liquid passing hole; 609. a second handle; 610. a second ram; 611. a second briquetting; 612. a second housing; 613. a middle valve sleeve; 614. a liquid passing hole; 615. a locking member; 616. a pressing member; 617. a liquid passing hole; 7. a third reversing valve unit; 701. a third compression bar; 702. a third liquid return valve sleeve; 703. a third valve seat; 704. a third inlet valve sleeve; 705. a third valve core; 706. a third spring; 707. a liquid passing hole; 708. a liquid passing hole; 709. a third handle; 710. a third ram; 711. a third briquetting; 712. a third housing; 713. a third valve pad; 714. a liquid passing hole; 715. a lever; 8. a main liquid inlet; 9. a main liquid return hole; 10. a first communication hole; 11. and a second communication hole.
Detailed Description
The following detailed description of the embodiments of the invention, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate and thorough understanding of the concepts and aspects of the invention, and to aid in its practice, by those skilled in the art.
It should be noted that, in the following embodiments, the "first", "second" and "third" do not represent an absolute distinction between structures and/or functions, and do not represent a sequential order of execution, but are merely for convenience of description.
As shown in fig. 1 to 13, the present invention provides a multifunctional integral type reversing valve comprising a valve body 5, a first valve core assembly, a second valve core assembly, a third valve core assembly, a first operating mechanism for controlling the first valve core assembly, a second operating mechanism for controlling the second valve core assembly, and a third operating mechanism for controlling the third valve core assembly, the valve body 5 having a first valve cavity 2 accommodating the first valve core assembly, a second valve cavity 3 accommodating the second valve core assembly, and a third valve cavity 4 accommodating the third valve core assembly, the first valve cavity 2 being in communication with the second valve cavity 3 and the third valve cavity 4, the first valve cavity 2 being provided with one, the second valve cavity 3 and the third valve cavity 4 each being provided with a plurality of.
Specifically, as shown in fig. 1 to 7, the valve body 5 is of an integrated rectangular block structure, the valve body 5 has a certain length, a certain width and a certain thickness, the length, the width and the thickness of the valve body 5 are mutually perpendicular, each valve core and the corresponding operating mechanism are integrated on the same valve body 5, the risk of oil leakage of the valve body 5 is reduced, and therefore the working safety of a hydraulic support hydraulic system can be ensured, and the whole structure of the reversing valve group is simpler and is convenient to assemble. The first valve core component and the first control component are arranged on the valve body 5 and form a first reversing valve unit with the valve body 5; the second valve core component and the second control component are arranged on the valve body 5 and form a second reversing valve unit with the valve body 5; the third valve core component and the third control component are arranged on the valve body 5 and form a third reversing valve unit with the valve body 5. The first valve cavity 2, the second valve cavity 3 and the third valve cavity 4 are all round cavities, the axis of the first valve cavity 2 is parallel to the axis of the second valve cavity 3 and the axis of the third valve cavity 4, the axes of the first valve cavity 2, the second valve cavity 3 and the third valve cavity 4 are parallel to the width direction of the valve body 5, the first valve cavity 2, the second valve cavity 3 and the third valve cavity 4 are hollow cavities which are formed by extending from the same end face of the valve body 5 towards the inside of the valve body 5, the third valve cavity 4 is arranged in a penetrating mode along the width direction of the valve body 5, and the first valve cavity 2 and the second valve cavity 3 are arranged in a non-penetrating mode on the valve body 5. The first valve core component is inserted into the first valve cavity 2 and is in threaded connection with the valve body 5, the second valve core component is inserted into the second valve cavity 3 and is in threaded connection with the valve body 5, and the third valve core component is inserted into the third valve cavity 4 and is in threaded connection with the valve body 5. The first valve cavity 2 is located between the second valve cavity 3 and the third valve cavity 4, all the second valve cavities 3 are located on one side of the first valve cavity 2, all the third valve cavities 4 are located on the other side of the first valve cavity 2, the first valve cavity 2 is communicated with a main liquid inlet hole 8 and a main liquid return hole 9 which are arranged on the valve body 5, the main liquid inlet hole 8 and the main liquid return hole 9 are arranged on the same side face of the valve body 5 side by side, the axes of the main liquid inlet hole 8 and the main liquid return hole 9 are parallel, the axes of the main liquid inlet hole 8 and the main liquid return hole 9 are perpendicular to the axis of the first valve cavity 2, the axes of the main liquid inlet hole 8 and the main liquid return hole 9 are parallel to the thickness direction of the valve body 5, the main liquid inlet hole 8 is used for guiding oil into the valve body 5, the main liquid return hole 9 is used for guiding oil inside the valve body 5 to the outside of the valve body 5, and the main liquid inlet hole 8 and the main liquid return hole 9 are on the same straight line parallel to the width direction of the valve body 5.
As shown in fig. 1 to 7, the valve body 5 is internally provided with a first communication hole 10 and a second communication hole 11, the longitudinal directions of the first communication hole 10 and the second communication hole 11 are parallel and the longitudinal directions of the first communication hole 10 and the second communication hole 11 are parallel to the longitudinal direction of the valve body 5. The first communication hole 10 communicates with the first valve chamber 2, the second valve chamber 3, and the third valve chamber 4, and the oil in the first valve chamber 2 flows into the second valve chamber 3 and the third valve chamber 4 through the first communication hole 10, respectively. The main liquid return hole 9 is communicated with the second valve cavity 3 and the third valve cavity 4 through the second communication hole 11, the second communication hole 11 is communicated with the first valve cavity 2, the second valve cavity 3 and the third valve cavity 4, and oil in the second valve cavity 3 and the third valve cavity 4 flows into the main liquid return hole 9 through the second communication hole 11, so that the reversing valve group can control the direction of liquid flow.
As shown in fig. 1 to 9, one first valve chamber 2 is provided, one first valve spool assembly is also provided, and correspondingly, one first operating mechanism is also provided. The first valve core assembly comprises a first liquid return valve sleeve 502, a first liquid inlet valve sleeve 504 connected with the first liquid return valve sleeve 502, a first valve core, a first valve seat 503 sleeved on the first valve core and a first pressure rod 501 matched with the first valve core to realize sealing, wherein the first pressure rod 501 is provided with a containing hole for the first valve core to be inserted. The two ends of the first valve core are open, a hollow oil duct is arranged inside the first valve core, an inner hole is formed in the first pressure rod 501, the first pressure rod 501 is inserted into the first liquid return valve sleeve 502, the end part of the first pressure rod 501 extends out of the first liquid return valve sleeve 502 to be matched with the first operating mechanism, and the end part of the first pressure rod 501 is used for receiving pressure applied by the first operating mechanism. The end of the first fluid inlet valve housing 504 is inserted into the first fluid return valve housing 502 and is in threaded connection with the first fluid return valve housing 502, and the first valve seat 503 is located in the first fluid return valve housing 502 and is abutted against a limiting step arranged inside the first fluid return valve housing 502 by the end face of the first fluid inlet valve housing 504, so that the first valve seat 503 is fixed. The first valve core is inserted into the first inlet valve housing 504 and the first valve seat 503, and the first compression rod 501 and the first valve core are movable. The first liquid return valve sleeve 502 is sleeved on the first pressure rod 501, an inner hole matched with the external shape of the first pressure rod 501 is formed in the first liquid return valve sleeve 502, the section of the first pressure rod 501 is in a convex shape, the head of the first pressure rod 501 extends out of the end part of the first liquid return valve sleeve 502, and an inner hole extending along the axial direction from the tail end surface is formed in the first pressure rod 501. The main part of first case is cylindrical, and first case is both ends opening, inside hollow structure, and first case is inside to be along the hollow oil duct of axial extension, and first case cooperatees with first depression bar 501 can realize sealedly. The first valve seat 503 is clamped between the first liquid inlet valve sleeve 504 and the first liquid return valve sleeve 502, the first valve seat 503 is located in the first liquid return valve sleeve 502 and sleeved on the first valve core, so that the first valve core assembly is convenient to disassemble and assemble, and can form an integral plug-in structure, the integration level is high, and the valve body 5 of the reversing valve is convenient to assemble and disassemble.
As shown in fig. 8 and 9, the center of the first valve core is provided with a hollow oil passage penetrating axially, the hollow oil passage comprises a first oil passage, a second oil passage and a third oil passage which are communicated and sequentially arranged axially, the diameter of the first oil passage is larger than that of the second oil passage and the diameter of the third oil passage, the diameter of the second oil passage is larger than that of the third oil passage, and the third oil passage is located between the second oil passage and the first compression bar 501. The first oil duct, the second oil duct and the third oil duct are coaxially arranged, and the length of the second oil duct is smaller than that of the first oil duct and the third oil duct. In the illustrated state, when the left side of the first pressing lever 501 moves to the right side by the first operating mechanism and pushes the first valve core to move to the right, by setting the hollow oil passage in the first valve core to be composed of three sections with different diameters, the operating moment can be reduced during operation. The cylindrical side wall of the first valve core is provided with a plurality of liquid passing holes 507 for passing liquid, the liquid passing holes 507 are round through holes which are formed in a penetrating manner on the cylindrical side wall of the first valve core and form a second oil duct in a surrounding manner, the liquid passing holes 507 are uniformly formed in the cylindrical side wall of the first valve core along the circumferential direction, and the liquid passing holes 507 are communicated with the second oil duct and the axes of the liquid passing holes and the second oil duct are perpendicular. The cylindrical side wall of the first fluid inlet valve sleeve 504 is provided with a fluid passing hole 508 for passing fluid, the fluid passing hole 508 is a circular through hole penetrating through the side wall of the first fluid inlet valve sleeve 504, the plurality of fluid passing holes 508 are uniformly arranged on the cylindrical side wall of the first fluid inlet valve sleeve 504 along the circumferential direction, and the fluid passing holes 508 are communicated with the first communication hole 10. When the first valve element assembly is in an initial state, the fluid passage 507 is aligned with the first valve seat 503 and is closed by the first valve seat 503 and a conical seal on the first valve element. After the first valve seat 503 is separated from the conical sealing portion on the first valve element, the liquid passing hole 507 is communicated with the liquid passing hole 508. A first spring 506 is further sleeved outside the first valve core, the first spring 506 is located in the first fluid inlet valve sleeve 504, one end of the first spring 506 abuts against the end face of the sealing portion of the first valve core, and the other end abuts against a step face, which is located in the first fluid inlet valve sleeve 504 and near the end position. When the first valve core assembly is in an initial state, the first spring 506 pushes the first valve core to move towards the first compression bar 501 until the sealing part of the first valve core contacts with the circular arc surface on the first valve seat 503 to realize sealing.
As shown in fig. 8 and 9, the accommodating hole is a circular hole provided at the center of the first compression rod 501, and a circular opening through which the first valve core passes is formed in the end surface of the first compression rod 501 facing the first valve seat 503, and the diameter of the accommodating hole is the same as the outer diameter of the first valve core. One end of the first valve core is always inserted into the accommodating hole, and a sealing ring is arranged between the first valve core and the first compression rod 501, the sealing ring is positioned in the accommodating hole, and the other end of the first valve core is positioned in the first liquid inlet valve sleeve 504. The first pressure lever 501 is matched with the first valve core, so that the first valve core component has an independent opening and closing function, can independently control the liquid inlet closing of the valve group, ensures the sealing performance of liquid return, and is convenient to overhaul without closing a liquid inlet stop valve in a hydraulic system.
As shown in fig. 8 and 9, the first operating mechanism includes a first housing 512, a first pressure head 510 rotatably disposed in the first housing 512, a first handle 509 fixedly connected to the first pressure head 510 and configured to operate the first pressure head 510 to rotate, and a first pressure block 511 rotatably disposed in the first housing 512 and sandwiched between the first pressure head 510 and the first pressure bar 501, wherein a rotation center line of the first pressure block 511 and the first pressure head 510 is parallel to a length direction of the valve body 5. The first casing 512 is fixedly connected with the valve body 5, the first handle 509 extends to the outside of the first casing 512, the first pressing block 511 is arranged in the first casing 512, the first pressing block 511 is matched with the first pressing rod 501, the first pressing head 510 abuts against one end of the first pressing block 511, and the other end of the first pressing block 511 is rotationally connected with the first casing 512. The first operating mechanism further includes an auxiliary pressing block 514 disposed inside the first housing 512, the auxiliary pressing block 514 and the first pressing block 511 are symmetrically disposed, the auxiliary pressing block 514 is rotatably disposed inside the first housing 512, and a rotation center line of the auxiliary pressing block 514 is parallel to a rotation center line of the first pressing block 511. One end of the auxiliary pressing block 514 is rotatably connected with the first shell 512, the first pressing head 510 abuts against the other end of the auxiliary pressing block 514, the other end of the auxiliary pressing block 514 abuts against the first pressing block 511, and two ends of the first pressing block 511 abut against the ends of the first pressing block 511 and the auxiliary pressing block 514 respectively. The valve body 5 is provided with a limiting pin 513 for limiting the auxiliary pressing block 514, and the auxiliary pressing block 514 is located between the limiting pin 513 and the first pressure head 510. The limiting pin 513 has a certain length, the length direction of the limiting pin 513 is parallel to the axis of the first valve cavity 2, one end of the limiting pin 513 is fixedly connected with the valve body 5, the other end of the limiting pin 513 is located in the first shell 512, and the limiting pin 513 and the first valve cavity 2 are located on the same straight line parallel to the thickness direction of the valve body 5. The limiting pin 513 is used for limiting the auxiliary pressing block 514, limiting the auxiliary pressing block 514 to rotate towards the direction close to the valve body 5, and limiting the rotation angle of the first handle 509, so that the first handle 509 can only push the first pressing block 511 to rotate, and accurate positioning of the first handle 509 is achieved.
As shown in fig. 1 to 7, 10 and 11, the second valve core assembly includes a second compression rod 601, a second liquid return valve sleeve 602, a second liquid inlet valve sleeve 604, an intermediate valve sleeve 613, a second valve core and a second valve pad 603 sandwiched between the second liquid inlet valve sleeve 604 and the intermediate valve sleeve 613, wherein the second valve pad 603 is sleeved on the second valve core and is matched with the second valve core to realize sealing, and the second valve pad 603 is made of soft material. The second liquid return valve sleeve 602 is sleeved on the second pressure rod 601, an inner hole matched with the outer shape of the second pressure rod 601 is formed in the second liquid return valve sleeve 602, the section of the second pressure rod 601 is in a convex shape, the head of the second pressure rod 601 extends out of the end part of the second liquid return valve sleeve 602, and an inner hole extending along the axial direction from the tail end surface is formed in the second pressure rod 601. The main body of the second valve core is cylindrical, two ends of the second valve core are opened, a hollow oil duct extending along the axial direction is arranged in the second valve core, and the second valve core is matched with the second compression bar 601 to realize sealing. One end of the middle valve sleeve 613 is in threaded connection with the second liquid return valve sleeve 602, the other end of the middle valve sleeve 613 is fixedly connected with the second liquid inlet valve sleeve 604 through a locking mechanism, the middle valve sleeve 613 and the second liquid inlet valve sleeve 604 are sleeved on the second valve core, and the middle valve sleeve 613 and the second liquid inlet valve sleeve 604 are provided with an inner hole inside. The side walls of the second fluid inlet valve sleeve 604, the second fluid return valve sleeve 602, the second valve core and the middle valve sleeve 613 are respectively provided with through holes for allowing fluid to flow through, namely a fluid through hole 608, a fluid through hole 614, a fluid through hole 607 and a fluid through hole 617, wherein the fluid through hole 608 is communicated with the first communication hole 10, the working port and the fluid through hole 607 are communicated with the fluid through hole 617 on the middle valve sleeve 613, and the fluid through hole 614 is communicated with the second communication hole 11. A second spring 606 is also sleeved outside the second valve core, the second spring 606 is located in the second liquid inlet valve sleeve 604, one end of the second spring 606 abuts against the end face of the sealing part of the second valve core, and the other end abuts against a step face in the second liquid inlet valve sleeve 604, which is arranged near the tail end position. When the second valve core assembly is in the initial state, the second spring 606 pushes the second valve core to move towards the second compression bar 601 until the sealing part of the second valve core contacts with the circular arc surface on the second valve pad 603 to realize sealing. In the initial state of the second valve cartridge assembly, the fluid passage 607 is aligned with the second valve pad 603 and is closed by the second valve pad 603 and the conical seals on the second valve cartridge. After the second valve pad 603 is separated from the conical sealing portion on the second valve element, the fluid passage 607 communicates with the fluid passage 608.
As shown in fig. 10 and 11, two ends of the middle valve sleeve 613 are respectively connected with the second liquid return valve sleeve 602 and the second liquid inlet valve sleeve 604, the second compression bar 601 and the second valve core are located in the three valve sleeves, and the second valve core assembly can form an integral plug-in structure, so that the integration level is high, and the installation and the disassembly in the valve body 5 are convenient. Through setting up locking mechanism fixed connection intermediate valve housing 613 and second back liquid valve housing 602, in the second case subassembly at the valve body 5 in-process of installing, can avoid appearing the circumstances that the back liquid valve housing that produces because of the frictional resistance that the sealing washer that outside cover was established and valve body 5 hole extrusion produced appears not hard up between back liquid valve housing and intermediate valve housing 613 to the reliability of back liquid valve housing and intermediate valve housing 613 connection has been improved. The middle valve sleeve 613 has a receiving groove for receiving the locking mechanism, the second fluid return valve sleeve 602 has locking grooves for embedding the locking mechanism, the receiving groove is a through hole penetrating through the side wall of the middle valve sleeve 613 along the radial direction, the receiving grooves are uniformly arranged on the side wall of the middle valve sleeve 613 along the circumferential direction, the locking grooves are arranged on the side wall of the second fluid return valve sleeve 602 along the circumferential direction, and each receiving groove is aligned with one locking groove. The locking mechanism includes a locking piece 615 that is simultaneously inserted into the locking groove and the receiving groove, and a pressing piece 616 that applies pressure to the locking piece 615 to fix it. The locking member 615 is preferably spherical and the locking groove is a spherical recess, and the compression member 616 is preferably a screw inserted into the receiving groove and threadedly coupled to the intermediate valve housing 613. The compressing element 616 is screwed into the accommodating groove to compress the locking element 615, so that one part of the locking element 615 is embedded into the accommodating groove, and the other part of the locking element 615 is embedded into the locking groove, thereby realizing the fixed connection between the middle valve sleeve 613 and the second liquid return valve sleeve 602, and avoiding the relative rotation between the middle valve sleeve 613 and the liquid return valve sleeve, and ensuring that the middle valve sleeve 613 and the liquid return valve sleeve are not easy to loosen.
Therefore, by arranging the locking mechanism to fixedly connect the middle valve sleeve 613 and the second fluid return valve sleeve 602, in the process of inserting the second valve core assembly into the valve body 5 for installation, the occurrence of loosening between the second fluid return valve sleeve 602 and the middle valve sleeve 613 caused by friction resistance generated by extrusion of an outer sleeved sealing ring and an inner hole of the valve body 5 can be avoided, and accordingly, the reliability of connection between the second fluid return valve sleeve 602 and the middle valve sleeve 613 is improved.
As shown in fig. 10 and 11, the second operating mechanism includes a second housing 612, a second ram 610 rotatably disposed in the second housing 612, a second handle 609 fixedly connected to the second ram 610 and configured to operate the second ram 610 to rotate, and a second pressing block 611 rotatably disposed in the second housing 612 and sandwiched between the second ram 610 and the second pressing rod 601. The second casing 612 is fixedly connected with the valve body 5, the second handle 609 stretches out to the outside of the second casing 612, two second pressing blocks 611 are arranged inside the second casing 612, two second pressing blocks 611 are symmetrically arranged in the second casing 612, each second pressing block 611 is respectively matched with a second pressing rod 601 of a second valve core assembly, the second pressing head 610 abuts against one end of each second pressing block 611, the end of each second pressing block 611 is respectively abutted against the end of each corresponding second pressing rod 601, and the other end of each second pressing block 611 is rotationally connected with the second casing 612.
In the initial state as shown in fig. 10 and 11, the second reversing valve unit is closed, the second valve core is sealed with the second valve pad 603, the inlet chamber of the second inlet valve sleeve 604 is not communicated with the oil passage in the second valve core, and the oil passage is not communicated; when the valve needs to be opened, the second handle 609 is pulled towards the direction of the working port where oil flows out, the second pressure lever 601 pushes the second valve core to move under the action of the second pressing block 611, the sealing part of the second valve core is separated from the valve pad, the liquid inlet cavity of the second liquid inlet valve sleeve 604 is communicated with the oil duct in the second valve core, and oil can enter the liquid outlet cavity, and because the second valve core and the second pressure lever 601 are sealed at this time, the oil in the liquid return cavity can flow into the working port of the valve body 5 through the liquid passing hole 607 on the middle valve sleeve 613. After the valve is closed, the oil in the liquid outlet cavity flows back to the emulsion pump station through the liquid passing hole 614 on the second liquid return valve sleeve 602, the second communication hole 11 of the valve body 5 and the main liquid return hole 9.
As shown in fig. 1 to 7, 12 and 13, the third valve core assembly includes a third compression rod 701, a third fluid return valve sleeve 702, a third fluid inlet valve sleeve 704 connected with the third fluid return valve sleeve 702, a third valve core, a third valve seat 703 sleeved on the third valve core, and a third valve pad 713 sandwiched between the third fluid inlet valve sleeve 704 and the third valve seat 703, where the third valve pad 713 and the third valve core cooperate to realize sealing, and the third valve pad 713 is made of soft material. The two ends of the third valve core are opened, a hollow oil duct is arranged in the third valve core, an inner hole is formed in the third pressure rod 701, the third pressure rod 701 is inserted into the third liquid return valve sleeve 702, the top of the third pressure rod extends out of the third liquid return valve sleeve 702 to be connected with the lever 715, the end part of the third liquid inlet valve sleeve 704 is inserted into the third liquid return valve sleeve 702 to be in threaded connection with the third liquid return valve sleeve 702, and the third valve seat 703 is positioned in the third liquid return valve sleeve 702 and sleeved on the third valve core. The third valve core is inserted into the third inlet valve housing 704 and the third valve seat 703, and both the third compression rod 701 and the third valve core are movable. The third hydraulic return valve sleeve 702 is sleeved on the third pressure rod 701, an inner hole matched with the external shape of the third pressure rod 701 is formed in the third hydraulic return valve sleeve 702, the cross section of the third pressure rod 701 is in a convex shape, the head of the third pressure rod 701 extends out of the end part of the third hydraulic return valve sleeve 702, and an inner hole extending along the axial direction from the tail end surface is formed in the third pressure rod 701. The main part of the third valve core is cylindrical, the third valve core is a structure with two open ends and a hollow inside, the inside of the third valve core is a hollow oil duct extending along the axial direction, and the third valve core is matched with the third pressure lever 701 to realize sealing. The third valve pad 713 is sandwiched between the third inlet valve housing 704 and the third valve seat 703 and cooperates with the third valve core to achieve sealing, the third valve seat 703 and the third valve pad 713 are located inside the third return valve housing 702 and the third valve pad 713 is in interference fit with the third return valve housing 702, and the third valve seat 703 is sandwiched between the third valve pad 713 and the third return valve housing 702. After the third fluid inlet valve housing 704 and the third fluid return valve housing 702 are screwed up, the third valve pad 713 contacts with the end surface of the third fluid inlet valve housing 704, and the other end surface of the third valve pad 713 contacts with the third valve seat 703, so that the third valve seat 703 abuts against a limit step arranged inside the third fluid return valve housing 702. The third valve seat 703 and the third valve pad 713 are sandwiched between the third intake valve housing 704 and the third return valve housing 702, so that the valve core assembly can form an integral plug-in structure, and the integration level is high, so that the valve core assembly is convenient to install and detach in the valve body 5 of the reversing valve. The cylindrical side wall of the third valve core is provided with a liquid passing hole 707 for passing liquid, the liquid passing hole 707 is a circular through hole penetrating through the cylindrical side wall of the third valve core, the liquid passing hole 707 is uniformly arranged on the cylindrical side wall of the third valve core along the circumferential direction, and the liquid passing hole 707 is communicated with a hollow oil duct of the third valve core and the axes of the liquid passing hole 707 and the hollow oil duct are perpendicular to each other. In the initial state of the valve cartridge assembly, the fluid passage 707 is aligned with the third valve pad 713 and is closed by the third valve pad 713 and a corresponding seal.
As shown in fig. 12 and 13, through holes, i.e., a through hole 708 and a through hole 714, through which the liquid flows are formed in the side walls of the third intake valve housing 704 and the third return valve housing 702, respectively, the through hole 708 communicates with the first communication hole 10, and the through hole 714 communicates with the second communication hole 11. A third spring 706 is further sleeved outside the third valve core, the third spring 706 is located in the third fluid inlet valve sleeve 704, one end of the third spring 706 abuts against the end face of the sealing portion of the third valve core, and the other end abuts against a step face, which is located near the tail end position, in the third fluid inlet valve sleeve 704. When the third valve core assembly is in the initial state, the third spring 706 pushes the third valve core to move towards the third compression rod 701 until the sealing part of the third valve core contacts with the circular arc surface on the third valve pad 713 to realize sealing. In the initial state of the third valve cartridge assembly, the fluid passage 707 is aligned with the second valve seat and is closed by the second valve pad 603 and a conical seal on the second valve cartridge. After the third valve pad 713 is separated from the conical seal on the third spool, the via 707 communicates with the via 708.
As shown in fig. 12 and 13, the third valve pad 713 is a circular ring structure made of soft material, and the material of the third valve pad 713 is preferably a peek material (polyetheretherketone engineering plastic). The third valve pad 713 and the third valve seat 703 are adjacently arranged and are not connected, and the third valve pad 713 made of soft materials is matched with the third valve core to realize sealing, so that the sealing performance of the reversing valve group is enhanced. And need not disk seat and case cooperation and realize sealing, need not to process on the disk seat like this with case matched with sealed face to can simplify the structure and the processing technology of disk seat, use for a long time and lead to sealing failure after only need change third valve pad 713 can, the cost is reduced), adaptation low pressure sealing requirement, sealing reliability is higher moreover.
As shown in fig. 12 and 13, the third operating mechanism includes a third housing 712, a third ram 710 rotatably disposed in the third housing 712, a third handle 709 fixedly connected to the third ram 710 and used for operating the third ram 710 to rotate, and a third pressing block 711 rotatably disposed in the third housing 712 and sandwiched between the third ram 710 and the third pressing rod 701, wherein the lever 715 is rotatably disposed in the third housing 712 and both ends of the lever 715 are respectively inserted into grooves formed in the third pressing rod 701 of the third valve core assembly, the grooves are annular grooves formed in an outer wall surface of the third pressing rod 701, and a rotation center line of the lever 715 is parallel to a rotation center line of the third pressing block 711 and parallel to a length direction of the valve body 5. The third casing 712 is fixedly connected with the valve body 5, the third handle 709 extends to the outside of the third casing 712, two third pressing blocks 711 are arranged in the third casing 712 and symmetrically, each third pressing block 711 is matched with a third pressing rod 701 of a third valve core assembly, the third pressing head 710 abuts against one end of the third pressing block 711, the end of the third pressing block 711 abuts against the end of the corresponding third pressing rod 701, and the other end of the third pressing block 711 is rotationally connected with the third casing 712.
As shown in fig. 1 to 3, all second valve cavities 3 on the valve body 5 are distributed in n×m matrix, n=2, m > 2, that is, all second valve cavities 3 are arranged in two rows on the valve body 5, all second valve cavities 3 in the same row are sequentially arranged along the length direction of the valve body 5 and are distributed at equal intervals, one second valve core assembly is respectively arranged in each second valve cavity 3, and the second operating mechanisms are matched with two second valve core assemblies parallel to the width direction of the valve body 5, and are totally m. All third valve cavities 4 on the valve body 5 are distributed in a matrix of n x j, n=2, j > 2, namely, all third valve cavities 4 are arranged in two rows on the valve body 5, all third valve cavities 4 in the same row are sequentially arranged along the length direction of the valve body 5 and are distributed at equal intervals, one third valve core component is respectively arranged in each third valve cavity 4, and j third operating mechanisms are matched with two third valve core components parallel to the width direction of the valve body 5.
As shown in fig. 1 to 3, in the present embodiment, 14 second valve chambers 3 are provided in total, 6 third valve chambers 4 are provided in total, 7 second operating mechanisms are provided in total, and 3 third operating mechanisms are provided in total.
The invention is described above by way of example with reference to the accompanying drawings. It will be clear that the invention is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present invention; or the invention is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the invention.
Claims (6)
1. Multifunctional integral reversing valve group, its characterized in that: the valve body is provided with a first valve cavity for accommodating the first valve core assembly, a second valve cavity for accommodating the second valve core assembly and a third valve cavity for accommodating the third valve core assembly, the first valve cavity is communicated with the second valve cavity and the third valve cavity, one first valve cavity is arranged, and a plurality of second valve cavities and a plurality of third valve cavities are arranged;
the first valve cavity is positioned between the second valve cavity and the third valve cavity and is communicated with a main liquid inlet hole and a main liquid return hole which are arranged on the valve body;
the valve body is internally provided with a first communication hole and a second communication hole, the length directions of the first communication hole and the second communication hole are parallel, and the length directions of the first communication hole and the second communication hole are parallel to the length direction of the valve body; the first communication hole is communicated with the first valve cavity, the second valve cavity and the third valve cavity, and oil in the first valve cavity flows into the second valve cavity and the third valve cavity respectively through the first communication hole; the main liquid return hole is communicated with the second valve cavity and the third valve cavity through the second communication hole, the second communication hole is communicated with the first valve cavity, the second valve cavity and the third valve cavity, and oil in the second valve cavity and the third valve cavity flows into the main liquid return hole through the second communication hole, so that the reversing valve group can control the direction of liquid flow;
The first valve cavity is provided with one first valve core component, and the first control mechanism is correspondingly provided with one first valve core component;
The first valve core assembly comprises a first liquid return valve sleeve, a first liquid inlet valve sleeve connected with the first liquid return valve sleeve, a first valve core, a first valve seat sleeved on the first valve core and a first pressure rod matched with the first valve core to realize sealing, wherein the first pressure rod is provided with an accommodating hole for the first valve core to be inserted; the first pressure rod is provided with an inner hole, the first pressure rod is inserted into the first liquid return valve sleeve, the end part of the first pressure rod extends out of the first liquid return valve sleeve to be matched with the first operating mechanism, and the end part of the first pressure rod is used for receiving the pressure applied by the first operating mechanism; the end part of the first liquid inlet valve sleeve is inserted into the first liquid return valve sleeve and is in threaded connection with the first liquid return valve sleeve, the first valve seat is positioned in the first liquid return valve sleeve, and the end surface of the first liquid inlet valve sleeve is abutted against a limiting step arranged in the first liquid return valve sleeve, so that the first valve seat is fixed; the first valve core is inserted into the first liquid inlet valve sleeve and the first valve seat, and the first compression bar and the first valve core can move;
The first liquid return valve sleeve is sleeved on the first pressure rod, an inner hole matched with the outer shape of the first pressure rod is formed in the first liquid return valve sleeve, the head of the first pressure rod extends out of the end part of the first liquid return valve sleeve, and an inner hole extending along the axial direction from the tail end surface is formed in the first pressure rod; the first valve core is internally provided with a hollow oil duct extending along the axial direction, and is matched with the first compression bar to realize sealing; the first valve seat is clamped between the first liquid inlet valve sleeve and the first liquid return valve sleeve, is positioned in the first liquid return valve sleeve and is sleeved on the first valve core;
The center of the first valve core is provided with a hollow oil passage which is arranged in a penetrating way along the axial direction, the hollow oil passage comprises a first oil passage, a second oil passage and a third oil passage which are communicated and are sequentially arranged along the axial direction, the diameter of the first oil passage is larger than that of the second oil passage and the third oil passage, the diameter of the second oil passage is larger than that of the third oil passage, and the third oil passage is positioned between the second oil passage and the first compression bar; the first oil duct, the second oil duct and the third oil duct are coaxially arranged, and the length of the second oil duct is smaller than that of the first oil duct and the third oil duct;
The cylindrical side wall of the first valve core is provided with a first liquid passing hole for passing liquid, the first liquid passing hole is a circular through hole which is formed by penetrating the cylindrical side wall of the first valve core surrounding the second oil duct, the plurality of first liquid passing holes are uniformly formed on the cylindrical side wall of the first valve core along the circumferential direction, and the first liquid passing holes are communicated with the second oil duct; the cylindrical side wall of the first liquid inlet valve sleeve is provided with a plurality of second liquid through holes for allowing liquid to pass through, the second liquid through holes are round through holes penetrating through the side wall of the first liquid inlet valve sleeve, the plurality of second liquid through holes are uniformly arranged on the cylindrical side wall of the first liquid inlet valve sleeve along the circumferential direction, and the second liquid through holes are communicated with the first communication holes; when the first valve core assembly is in an initial state, the first liquid passing hole is aligned with the first valve seat and is closed by the first valve seat and a conical sealing part on the first valve core; after the first valve seat is separated from the conical sealing part on the first valve core, the first liquid through hole is communicated with the second liquid through hole;
The accommodating hole is a round hole arranged at the center of the first compression bar, a round opening for the first valve core to pass through is formed in the end face of the first compression bar, which faces the first valve seat, and the diameter of the accommodating hole is the same as the outer diameter of the first valve core; one end of the first valve core is always inserted into the accommodating hole, a sealing ring is arranged between the first valve core and the first compression bar, the sealing ring is positioned in the accommodating hole, and the other end of the first valve core is positioned in the first liquid inlet valve sleeve;
The first operating mechanism comprises a first shell, a first pressure head rotatably arranged in the first shell, a first handle fixedly connected with the first pressure head and used for operating the first pressure head to rotate, and a first pressing block rotatably arranged in the first shell and clamped between the first pressure head and the first pressing rod, wherein the rotation center lines of the first pressing block and the first pressure head are parallel to the length direction of the valve body; the first shell is fixedly connected with the valve body, the first handle extends out of the first shell, the first pressing block is arranged in the first shell and is matched with the first pressing rod, the first pressing head abuts against one end of the first pressing block, and the other end of the first pressing block is rotationally connected with the first shell;
The first control mechanism further comprises an auxiliary pressing block arranged in the first shell, the auxiliary pressing block and the first pressing block are symmetrically arranged, the auxiliary pressing block is rotatably arranged in the first shell, and the rotation center line of the auxiliary pressing block is parallel to the rotation center line of the first pressing block; one end of the auxiliary pressing block is rotationally connected with the first shell, the first pressing head abuts against the other end of the auxiliary pressing block, the other end of the auxiliary pressing block abuts against the first pressing block, and two ends of the first pressing block respectively abut against the ends of the first pressing block and the auxiliary pressing block; the valve body is provided with a limiting pin for limiting the auxiliary pressing block, and the auxiliary pressing block is positioned between the limiting pin and the first pressure head; the length direction of the limiting pin is parallel to the axis of the first valve cavity, one end of the limiting pin is fixedly connected with the valve body, the other end of the limiting pin is positioned in the first shell, and the limiting pin and the first valve cavity are positioned on the same straight line parallel to the thickness direction of the valve body; the limiting pin is used for playing a limiting role on the auxiliary pressing block, limiting the auxiliary pressing block to rotate towards the direction close to the valve body, and further limiting the rotating angle of the first handle, so that the first handle can only push the first pressing block to rotate, and positioning of the first handle is achieved.
2. The multifunctional integral reversing valve set of claim 1, wherein: the second valve core assembly comprises a second compression bar, a second liquid return valve sleeve, a second liquid inlet valve sleeve, a middle valve sleeve, a second valve core and a second valve pad clamped between the second liquid inlet valve sleeve and the middle valve sleeve, wherein the second valve pad is sleeved on the second valve core and matched with the second valve core to realize sealing, and the second valve pad is made of soft materials.
3. The multifunctional integral reversing valve set of claim 2, wherein: one end of the middle valve sleeve is connected with the second liquid inlet valve sleeve, the other end of the middle valve sleeve is connected with the second liquid return valve sleeve through a locking mechanism, the locking mechanism is arranged to prevent the middle valve sleeve and the second liquid return valve sleeve from rotating relatively, the middle valve sleeve is provided with a containing groove for containing the locking mechanism, and the second liquid return valve sleeve is provided with a locking groove for embedding the locking mechanism.
4. A multifunctional integral reversing valve set according to claim 3, characterized in that: the locking mechanism comprises a locking piece embedded in the locking groove and the accommodating groove and a pressing piece for applying pressure to the locking piece to fix the locking piece, the locking piece is spherical, the locking groove is a spherical groove, and the pressing piece is a screw in threaded connection with the middle valve sleeve.
5. The multifunctional integral reversing valve set according to any one of claims 1 to 4, wherein: the third valve core assembly comprises a third compression bar, a third liquid return valve sleeve, a third liquid inlet valve sleeve connected with the third liquid return valve sleeve, a third valve core, a third valve seat sleeved on the third valve core and a third valve pad clamped between the third liquid inlet valve sleeve and the third valve seat, the third valve pad is matched with the third valve core to realize sealing, and the third valve pad is made of soft material.
6. The multifunctional integral reversing valve set according to any one of claims 1 to 4, wherein: the number of the second valve cavities is 14, and the number of the third valve cavities is 6.
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| CN201277049Y (en) * | 2008-10-19 | 2009-07-22 | 乐清市东风煤矿设备有限公司 | Reversal valve |
| CN101893011A (en) * | 2010-07-30 | 2010-11-24 | 三一重工股份有限公司 | Hydraulic valve, hydraulic valve bank and control method thereof |
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| JP2019007515A (en) * | 2017-06-22 | 2019-01-17 | 日立オートモティブシステムズ株式会社 | Hydraulic control valve |
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| CN206016842U (en) * | 2016-08-11 | 2017-03-15 | 乐清市东风煤矿设备有限公司 | A kind of FHS400/160 integrated change valves group |
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