CN213808271U - Flow valve and overflow valve integrated threaded cartridge valve - Google Patents
Flow valve and overflow valve integrated threaded cartridge valve Download PDFInfo
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- CN213808271U CN213808271U CN202022965848.1U CN202022965848U CN213808271U CN 213808271 U CN213808271 U CN 213808271U CN 202022965848 U CN202022965848 U CN 202022965848U CN 213808271 U CN213808271 U CN 213808271U
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Abstract
The utility model discloses a flow valve and overflow valve integrated screw thread cartridge valve, including the valve barrel, be provided with pilot valve core and main valve core in the valve barrel, main valve core sets up the front end at pilot valve core, be provided with main spring in the main valve core, main spring's one end offsets with main valve core, main spring's the other end offsets with the valve barrel, pilot valve core's outside cover is equipped with the pilot spring, pilot spring's one end offsets with the arch of pilot valve core front end, pilot spring's the other end offsets with the locking structure of pilot valve core rear end, first through-hole and second through-hole have been seted up on the valve barrel, first through-hole corresponds with pilot valve core position, the second through-hole corresponds with main valve core position, main valve core's front end is provided with the filter pad. The utility model discloses can reach governing system pressure, can realize the LS oil circuit off-load when the multiple unit valve stops working simultaneously, realize the integration of two screw-in cartridge valves of overflow valve and flow valve, the cost is reduced has saved the space.
Description
Technical Field
The utility model relates to a hydraulic transmission technical field especially relates to a flow valve and overflow valve integrated screw-thread cartridge valve.
Background
At present, a load-sensitive system is popular with more and more customers due to the characteristics of energy conservation and high efficiency, and for other load-sensitive multi-way valves, two threaded cartridge valves, namely an overflow valve for adjusting the pressure of the system and a flow valve for achieving LS oil way unloading when the multi-way valve stops working, are generally needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flow valve and integrated screw-thread cartridge valve of overflow valve can reach governing system pressure, can realize LS oil circuit off-load when the multiple unit valve stops working simultaneously, has realized the integration of two screw-thread cartridge valves of overflow valve and flow valve, and the cost is reduced has saved the space.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a flow valve and overflow valve integrated thread cartridge valve, which comprises a valve sleeve, wherein a pilot valve core and a main valve core are arranged in the valve sleeve, the main valve core is arranged at the front end of the pilot valve core, a main spring is arranged in the main valve core, one end of the main spring is abutted against the main valve core, the other end of the main spring is abutted against the valve sleeve, a pilot spring is sleeved outside the pilot valve core, one end of the pilot spring is abutted against a bulge at the front end of the pilot valve core, the other end of the pilot spring is abutted against a locking structure at the rear end of the pilot valve core, a first through hole and a second through hole are arranged on the valve sleeve, the first through hole corresponds to the position of the pilot valve core, the second through hole corresponds to the position of the main valve core, a third through hole is arranged on the side wall of the main valve core, a fourth through hole is arranged at the front end of the main valve core, the front end of the main valve core is provided with a filter pad, and a fifth through hole is formed in the filter pad.
Preferably, the locking structure comprises an adjusting screw and a locking nut, one end of the adjusting screw is arranged in the valve sleeve, the adjusting screw is detachably connected with the locking nut through threads, and one end of the locking nut is in contact with the valve sleeve.
Preferably, one end of the adjusting screw extending into the valve sleeve is provided with a limit groove matched with the shape of the rear end of the pilot valve core.
Preferably, the valve sleeve comprises a first through groove, a second through groove and a third through groove which are sequentially communicated, the size of the second through groove is smaller than that of the first through groove and that of the third through groove, the main valve element is located in the first through groove, the length of the main valve element is smaller than that of the first through groove, the pilot valve element is located in the third through groove, the protrusion can penetrate through the second through groove and extend into the first through groove, and the inclined surface of the protrusion is matched with the inclined surface of the second through groove.
Preferably, when the main valve core is located at the front end of the first through groove, the second through hole is communicated with the third through hole.
Preferably, a first sealing ring is arranged between the valve sleeve and the locking structure.
Preferably, a clamping groove is formed in the outer side of the valve sleeve corresponding to the position of the pilot valve core, and a second sealing ring is arranged at the clamping groove.
Preferably, a groove is formed in the outer side of the valve sleeve located at the front end of the second through hole, and a check ring and a third sealing ring are arranged in the groove.
The utility model discloses for prior art gain following technological effect:
the utility model discloses a position of adjusting locking structure changes the size of the pretightning force of guide spring to the pressure size of governing valve, when the multiple unit valve began working, LS oil road got into the valve barrel through the fifth through-hole, promoted main valve element to move to the rear end (guide valve element), second through-hole and third through-hole position stagger, partly oil spills over through the second through-hole, another part oil gets into main valve element through the fourth through-hole, the arch and the valve barrel of guide valve element separate, another part oil spills over through first through-hole, realize the overflow from this; when the multi-way valve stops working, the pilot valve core moves towards the main valve core under the pressure action of the pilot spring, so that the bulge of the pilot valve core is attached to the valve sleeve, the main valve core moves towards the front end, the second through hole corresponds to the third through hole in position, and hydraulic oil flows out through the fifth through hole, the fourth through hole, the third through hole and the second through hole, so that unloading is realized. The utility model discloses can reach governing system pressure, can realize the LS oil circuit off-load when the multiple unit valve stops working simultaneously, realize the integration of two screw-in cartridge valves of overflow valve and flow valve, the cost is reduced has saved the space.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an unloading schematic diagram of the flow valve and overflow valve integrated threaded cartridge valve of the present invention;
FIG. 2 is a schematic diagram of the overflow of the flow valve and overflow valve integrated threaded cartridge valve of the present invention;
FIG. 3 is a hydraulic schematic diagram of a multi-way valve and a flow valve and overflow valve integrated threaded cartridge valve of the present invention;
wherein: 1-adjusting screw, 2-locking nut, 3-first sealing ring, 4-valve sleeve, 5-pilot valve core, 6-second sealing ring, 7-pilot spring, 8-main spring, 9-main valve core, 10-retainer ring, 11-third sealing ring and 12-filter pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model aims at providing a flow valve and integrated screw-thread cartridge valve of overflow valve can reach governing system pressure, can realize LS oil circuit off-load when the multiple unit valve stops working simultaneously, has realized the integration of two screw-thread cartridge valves of overflow valve and flow valve, and the cost is reduced has saved the space.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-3: the embodiment provides a flow valve and overflow valve integrated thread cartridge valve, which comprises a valve sleeve 4, a pilot valve core 5 and a main valve core 9 are arranged in the valve sleeve 4, the main valve core 9 is arranged at the front end of the pilot valve core 5, a main spring 8 is arranged in the main valve core 9, one end of the main spring 8 abuts against the main valve core 9, the other end of the main spring 8 abuts against the valve sleeve 4, a pilot spring 7 is sleeved outside the pilot valve core 5, one end of the pilot spring 7 abuts against a bulge at the front end of the pilot valve core 5, the other end of the pilot spring 7 abuts against a locking structure at the rear end of the pilot valve core 5, a first through hole and a second through hole are formed in the valve sleeve 4, the first through hole corresponds to the position of the pilot valve core 5, the second through hole corresponds to the position of the main valve core 9, a third through hole is formed in the side wall of the main valve core 9, a fourth through hole is formed in the front end of the main valve core 9, a filter pad 12 is arranged at the front end of the main valve core 9, the filter pad 12 is provided with a fifth through hole.
In this embodiment, the locking structure includes adjusting screw 1 and lock nut 2, and the one end setting of adjusting screw 1 is in valve barrel 4, and adjusting screw 1 passes through the screw thread with lock nut 2 and can dismantle the connection, and lock nut 2's one end and valve barrel 4 contact. One end of the adjusting screw 1 extending into the valve sleeve 4 is provided with a limit groove matched with the shape of the rear end of the pilot valve core 5. The pressure of the valve is changed by changing the length of the adjusting screw 1 extending into the valve sleeve 4.
In this embodiment, the valve housing 4 includes the first through groove, the second through groove and the third through groove that communicate in proper order, and the size that the second led to the groove is less than the size that the first led to the groove and the third led to the groove, and main spool 9 is located the first length that leads to the inslot and main spool 9's length is less than the length that the first led to the groove, and pilot spool 5 is located the third through groove, and the arch can pass the second and lead to the groove and stretch into the first through groove, and bellied inclined plane and the inclined plane phase-match that leads to the groove of second. When the main valve element 9 is positioned at the front end of the first through groove, the second through hole is communicated with the third through hole.
In this embodiment, a first sealing ring 3 is disposed between the valve sleeve 4 and the locking structure. A clamping groove is formed in the outer side of the valve sleeve 4 corresponding to the position of the pilot valve core 5, and a second sealing ring 6 is arranged at the clamping groove. A groove is arranged on the outer side of the valve sleeve 4 positioned at the front end of the second through hole, a check ring 10 and a third seal ring 11 are arranged in the groove, and the check ring 10 is a white check ring.
In the embodiment, the pre-tightening force of the pilot spring 7 is changed by adjusting the position of the locking structure, so that the pressure of the valve is adjusted, when the multi-way valve starts to work, the LS oil path enters the valve sleeve 4 through the fifth through hole, the main valve element 9 is pushed to move towards the rear end (the pilot valve element 5), the second through hole and the third through hole are staggered in position, one part of oil overflows through the second through hole, the other part of oil enters the main valve element 9 through the fourth through hole, the protrusion of the pilot valve element 5 is separated from the valve sleeve 4, and the other part of oil overflows through the first through hole, so that overflow is realized; when the multi-way valve stops working, the pilot valve core 5 moves towards the main valve core 9 under the pressure action of the pilot spring 7, so that the bulge of the pilot valve core 5 is attached to the valve sleeve 4, the main valve core 9 moves towards the front end, the second through hole corresponds to the third through hole in position, and hydraulic oil flows out through the fifth through hole, the fourth through hole, the third through hole and the second through hole, so that unloading is realized. The embodiment can adjust the system pressure, can realize unloading of the LS oil path when the multi-way valve stops working, realizes integration of the two threaded cartridge valves of the overflow valve and the flow valve, reduces the cost and saves the space.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The utility model provides a flow valve and overflow valve integrated screw-thread cartridge valve which characterized in that: comprises a valve sleeve, a pilot valve core and a main valve core are arranged in the valve sleeve, the main valve core is arranged at the front end of the pilot valve core, a main spring is arranged in the main valve core, one end of the main spring is propped against the main valve core, the other end of the main spring is propped against the valve sleeve, a pilot spring is sleeved on the outer side of the pilot valve core, one end of the pilot spring is abutted against the bulge at the front end of the pilot valve core, the other end of the pilot spring is abutted against a locking structure at the rear end of the pilot valve core, a first through hole and a second through hole are arranged on the valve sleeve, the first through hole corresponds to the position of the pilot valve core, the second through hole corresponds to the position of the main valve core, the side wall of the main valve core is provided with a third through hole, the front end of the main valve core is provided with a fourth through hole, the front end of the main valve core is provided with a filter pad, and the filter pad is provided with a fifth through hole.
2. The flow valve and overflow valve integrated threaded cartridge valve of claim 1, wherein: the locking structure comprises an adjusting screw and a locking nut, one end of the adjusting screw is arranged in the valve sleeve, the adjusting screw is detachably connected with the locking nut through threads, and one end of the locking nut is in contact with the valve sleeve.
3. The flow valve and overflow valve integrated threaded cartridge valve of claim 2, wherein: and one end of the adjusting screw extending into the valve sleeve is provided with a limit groove matched with the shape of the rear end of the pilot valve core.
4. The flow valve and overflow valve integrated threaded cartridge valve of claim 1, wherein: the valve sleeve comprises a first through groove, a second through groove and a third through groove which are sequentially communicated, the size of the second through groove is smaller than that of the first through groove and that of the third through groove, the main valve core is located in the first through groove, the length of the main valve core is smaller than that of the first through groove, the pilot valve core is located in the third through groove, the protrusion can penetrate through the second through groove and extend into the first through groove, and the inclined surface of the protrusion is matched with the inclined surface of the second through groove.
5. The flow valve and overflow valve integrated threaded cartridge valve of claim 4, wherein: when the main valve core is positioned at the front end of the first through groove, the second through hole is communicated with the third through hole.
6. The flow valve and overflow valve integrated threaded cartridge valve of claim 1, wherein: a first sealing ring is arranged between the valve sleeve and the locking structure.
7. The flow valve and overflow valve integrated threaded cartridge valve of claim 1, wherein: and a clamping groove is arranged on the outer side of the valve sleeve corresponding to the position of the pilot valve core, and a second sealing ring is arranged at the clamping groove.
8. The flow valve and overflow valve integrated threaded cartridge valve of claim 1, wherein: and a groove is formed in the outer side of the valve sleeve positioned at the front end of the second through hole, and a check ring and a third sealing ring are arranged in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022965848.1U CN213808271U (en) | 2020-12-10 | 2020-12-10 | Flow valve and overflow valve integrated threaded cartridge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022965848.1U CN213808271U (en) | 2020-12-10 | 2020-12-10 | Flow valve and overflow valve integrated threaded cartridge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213808271U true CN213808271U (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022965848.1U Active CN213808271U (en) | 2020-12-10 | 2020-12-10 | Flow valve and overflow valve integrated threaded cartridge valve |
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| CN (1) | CN213808271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460092A (en) * | 2020-12-10 | 2021-03-09 | 山东泰丰智能控制股份有限公司 | Flow valve and overflow valve integrated threaded cartridge valve |
-
2020
- 2020-12-10 CN CN202022965848.1U patent/CN213808271U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460092A (en) * | 2020-12-10 | 2021-03-09 | 山东泰丰智能控制股份有限公司 | Flow valve and overflow valve integrated threaded cartridge valve |
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