CN114183424A - Damping element of adjustable distributing valve type, direct-acting overflow valve and pilot-operated overflow valve - Google Patents
Damping element of adjustable distributing valve type, direct-acting overflow valve and pilot-operated overflow valve Download PDFInfo
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- CN114183424A CN114183424A CN202111443870.2A CN202111443870A CN114183424A CN 114183424 A CN114183424 A CN 114183424A CN 202111443870 A CN202111443870 A CN 202111443870A CN 114183424 A CN114183424 A CN 114183424A
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- valve
- overflow valve
- main overflow
- suction
- main
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
Abstract
The invention discloses an adjustable distributing valve type damping element, a direct-acting overflow valve and a pilot-operated overflow valve. The damping element comprises a suction valve component and a pressing-out valve component which are arranged on a main overflow valve body, a valve inlet of the suction valve component is connected with a flow channel of an outlet of the main overflow valve, and a valve outlet of the suction valve component is communicated with a damping cavity of the main overflow valve; and a valve inlet of the extrusion valve assembly is connected with the damping cavity of the main overflow valve, and a valve outlet of the extrusion valve assembly is connected with an outlet flow channel of the main overflow valve. The invention can adjust the damping effect in real time when the overflow valve works normally, can adjust and control the motion state of the valve core in real time, avoids frequent part disassembly and assembly and replacement when the conventional damping element adjusts the damping effect, and greatly saves the processing, material, labor and time cost.
Description
Technical Field
The invention belongs to the technical field of overflow valves, and particularly relates to an adjustable distributing valve type damping element, a direct-acting overflow valve and a pilot-operated overflow valve.
Background
The overflow valve is a pressure control valve and is normally open. The overflow valve can be used for setting the working pressure of the system or serving as a safety valve to protect the whole system, and the safety of components and parts caused by overhigh pressure of the system is prevented. When the overflow valve works normally, violent impact between the valve core and the valve seat often occurs due to flow fluctuation or instability of the overflow valve, which affects the pressure stability of the whole hydraulic system and threatens the safety of some pressure sensitive elements, and simultaneously, the service life of the overflow valve is a great test.
The overflow valve with high requirement on pressure stability can maintain the stable operation of the overflow valve core by arranging the damping element. The damping element is an important component for the overflow valve, the damping element plays a role of 'blocking but not stopping', when the overflow valve is opened, the valve core moves in a forward direction, the damping element starts to play a role at the moment to block the movement of the valve core, and when the opening degree of the overflow valve port reaches the maximum and the valve core moves in a reverse direction, the damping element can block the reverse movement of the valve core. Therefore, the damping element can block the forward or reverse movement of the valve core when the overflow valve works, and the higher the movement speed is, the stronger the damping effect is, thereby ensuring that the valve core is in a stable position and reducing the vibration of the valve core.
According to the prior art, a damping element in the overflow valve is usually a damping hole with a fixed size formed on a damping cavity, or gap damping is formed by fixing a gap. In practice, the damping effect of the damping element is often not adjustable in real time. When the damping effect is too strong, the overflow valve can be caused to generate an overshoot phenomenon, so that a pressure peak value is generated; when the damping effect is insufficient, the valve spool state may be unstable to cause spool vibration and pressure pulsation. Therefore, a large number of damping elements with different damping effects need to be prepared for frequent replacement, which not only has high material and processing costs, but also causes great loss of time and manpower.
Therefore, a damping element which can be adjusted in real time in the working process of the overflow valve needs to be designed in the field, so that frequent disassembly, assembly and replacement can be avoided, and the processing, material, labor and time costs can be saved.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides an adjustable flow distribution valve type damping element, a direct-acting overflow valve and a pilot-operated overflow valve, and aims to adjust the damping effect in real time when the overflow valve works normally, adjust and control the motion state of a valve core in real time, avoid frequent part disassembly and assembly and replacement when the conventional damping element adjusts the damping effect, and greatly save the processing, material, labor and time cost.
In order to achieve the above object, according to one aspect of the present invention, there is provided a damping element of an adjustable distributing valve type, the damping element includes a suction valve assembly and a discharge valve assembly arranged on a main overflow valve body, a valve inlet of the suction valve assembly is connected to a flow passage of an outlet of the main overflow valve, and a valve outlet of the suction valve assembly is communicated with a damping cavity of the main overflow valve; and a valve inlet of the extrusion valve assembly is connected with the damping cavity of the main overflow valve, and a valve outlet of the extrusion valve assembly is connected with the outlet flow channel of the main overflow valve.
Preferably, the suction valve assembly and the pressure valve assembly are both relief valves.
Preferably, the suction valve assembly comprises a suction valve core, a suction valve spring, a suction valve seat, a suction valve spring seat, a suction valve gland and a suction valve pressure regulating screw, and the suction valve spring is abutted against the suction valve core and the suction valve spring seat; the suction valve pressure regulating screw is installed on the suction valve pressure cover through threads and is abutted against the suction valve spring seat for regulating the valve opening pressure of the suction valve component. When the suction valve component is opened, the annular gaps between the suction valve spring and the valve body are communicated with the valve inlet and the valve outlet of the suction valve component to form a liquid flow channel.
Preferably, the extrusion valve assembly comprises an extrusion valve spool, an extrusion valve spring, an extrusion valve seat, an extrusion valve spring seat, an extrusion valve gland and an extrusion valve pressure regulating screw, wherein the extrusion valve spring is abutted against the extrusion valve spool and the extrusion valve spring seat, the extrusion valve gland is in threaded connection with the valve body, and the extrusion valve pressure regulating screw is installed on the extrusion valve gland through threads and is abutted against the extrusion valve spring seat for regulating the valve opening pressure of the extrusion valve assembly. When the extrusion valve assembly is opened, the annular gaps between the extrusion valve spring and the valve body are communicated with the valve inlet and the valve outlet of the extrusion valve assembly to form a liquid flow channel.
Preferably, the valve ports of the suction valve assembly and the pressure valve assembly are ball valves, cone valves or flat plate valves.
Preferably, the extrusion valve seat, the suction valve seat, the extrusion valve spring seat and the suction valve spring seat are provided with sealing rings to isolate the damping cavity of the main overflow valve from the outlet of the main overflow valve and from the external environment.
In accordance with another aspect of the present invention, a direct acting relief valve is provided that includes an adjustable valving-type damping element.
In accordance with yet another aspect of the present invention, a pilot operated relief valve is provided that includes an adjustable valving-type damping element.
Preferably, the direct-acting overflow valve further comprises a main overflow valve core, a main overflow valve seat and a pressure regulating assembly, and a main overflow valve inlet and a main overflow valve outlet are formed in the main overflow valve body; the pressure regulating assembly comprises a main overflow valve spring, a main overflow valve spring seat, a main overflow valve pressure regulating screw rod and a main overflow valve gland, wherein the main overflow valve spring is abutted against a main overflow valve core and the main overflow valve spring seat; and a main overflow valve damping cavity is formed among the main overflow valve core, the main overflow valve body and the main overflow valve spring seat.
Preferably, the inner hole of the main overflow valve body is a through hole with the same diameter, a sealing ring is arranged at the contact position of the main overflow valve core and the main overflow valve body, and a sealing ring is arranged at the contact position of the main overflow valve spring seat and the main overflow valve body; the main overflow valve seat is installed on the main overflow valve body through threads, and a sealing ring is arranged on the main overflow valve seat to isolate the inlet of the main overflow valve from the outlet of the main overflow valve.
In general, at least the following advantages can be obtained by the above technical solution contemplated by the present invention compared to the prior art.
1. The damping effect of the overflow valve is provided by the extrusion valve component and the suction valve component, when the opening pressure of the valve inlets of the extrusion valve component and the suction valve component is smaller, the damping effect is weaker, and when the opening pressure of the valve inlets of the extrusion valve component and the suction valve component is larger, the damping effect is stronger. The adjustment and the transformation between the strength and the weakness of the damping effect can be directly carried out in the working process of the overflow valve, the overflow valve does not need to be disassembled or assembled and parts do not need to be replaced, and the conversion of different damping effects by using one set of damping elements is really realized; the overflow valve can be adjusted to achieve the optimal damping effect in the working process of the overflow valve, and the processing, material, labor and time costs are greatly saved.
2. The extrusion valve assembly and the suction valve assembly are preferably overflow valves, the damping effect is adjusted in a very simple mode, and the damping effect can be directly realized by adjusting pressure adjusting screws of the extrusion valve assembly and the suction valve assembly.
3. When the damping element provided by the invention is applied to an overflow valve, the higher the movement speed of the valve core is, the higher the pressure rising or falling speed of the damping cavity of the overflow valve is, so that the opening degrees of the valve ports of the extrusion valve assembly and the suction valve assembly are increased, the pressure of the damping cavity is greatly increased or reduced, the stronger the blocking effect on the main overflow valve core is, the violent vibration of the valve core can be prevented, and under the reciprocating condition, the damping element provided by the invention can control the main overflow valve core to keep a relatively stable state.
4. The damping element and the overflow valve provided by the invention share one valve body, and the extrusion valve assembly and the suction valve assembly are integrally accommodated in the valve body, so that the overall volume and the profile size of the overflow valve are not increased, the processing and assembling processes are simplified, and the resources are saved.
5. The main overflow valve outlet and the main overflow valve damping cavity are isolated between the main overflow valve core and the valve body through the sealing ring, and the main overflow valve damping cavity and the external environment are isolated between the main overflow valve spring seat and the valve body through the sealing ring, so that the damping effect of the damping cavity is adjusted only through the extrusion valve assembly and the suction valve assembly, and the reliability and the stability of the damping effect adjustment are ensured.
Drawings
FIG. 1 is a schematic diagram of a direct acting relief valve having an adjustable valving type damping element in a preferred embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the suction valve assembly of the adjustable valving damping element of FIG. 1;
FIG. 3 is an enlarged view of a portion of a pressure bleed valve assembly in the adjustable valving damping element of FIG. 1. The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-a main overflow valve pressure regulating screw rod, 2-a main overflow valve gland, 3-a main overflow valve spring, 4-a suction valve component, 5-a valve outlet of the suction valve component, 6-a valve inlet of the suction valve component, 7-a main overflow valve core, 8-a main overflow valve seat, 9-a main overflow valve inlet, 10-a main overflow valve outlet, 11-a valve outlet of a pressing valve component, 12-a pressing valve component, 13-a valve inlet of the pressing valve component, 14-a main overflow valve damping cavity, 15-a main overflow valve body, 16-a main overflow valve spring seat and 17-a suction valve pressure regulating screw rod; 18-a suction valve gland, 19-a suction valve spring seat, 20-a suction valve seat, 21-a suction valve spring, 22-a suction valve core, 23-a pressure valve core, 24-a pressure valve seat, 25-a pressure valve spring, 26-a pressure valve spring seat, 27-a pressure valve gland, 28-a pressure regulating screw of the pressure valve and 29-a main overflow valve outlet flow passage.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the invention describes a detailed process for realizing a real-time damping adjustment effect by using a direct-acting overflow valve with an adjustable flow distribution valve type damping element, but the embodiment does not limit the technical scheme of the invention.
Referring to fig. 1, 2 and 3, the direct-acting overflow valve comprises a main overflow valve core 7, a main overflow valve seat 8 and a pressure regulating assembly, and a main overflow valve inlet 9 and a main overflow valve outlet 10 are arranged on a main overflow valve body 15; the pressure regulating assembly comprises a main overflow valve spring 3, a main overflow valve spring seat 16, a main overflow valve pressure regulating screw rod 1 and a main overflow valve gland 2, wherein the main overflow valve spring 3 is connected with a main overflow valve core 7 and the main overflow valve spring seat 16 in a propping manner, the main overflow valve gland 2 is connected with the top of a main overflow valve body 15 through threads, and the main overflow valve pressure regulating screw rod is connected with the main overflow valve gland through threads and propped against the main overflow valve spring seat. (ii) a And a main overflow valve damping cavity 14 is formed among the main overflow valve spool 7, the main overflow valve body 15 and the main overflow valve spring seat 16.
Specifically, the damping element of the adjustable distributing valve type comprises a suction valve assembly 4 and a pressing valve assembly 12 which are arranged on a main overflow valve body 15, a valve inlet 6 of the suction valve assembly is connected with a main overflow valve outlet flow passage 29, and a valve outlet 5 of the suction valve assembly is communicated with a main overflow valve damping cavity 14; the valve inlet 13 of the pressure valve assembly is connected with the main overflow valve damping cavity 14, and the valve outlet 11 of the pressure valve assembly is connected with the main overflow valve outlet flow passage 29.
Both the suction valve assembly 4 and the expression valve assembly 12 are relief valves.
In some embodiments, the suction valve assembly 4 includes a suction valve spool 22, a suction valve spring 21, a suction valve seat 20, a suction valve spring seat 19, a suction valve gland 18, and a suction valve pressure regulating screw 17, wherein the suction valve spring 21 abuts against the suction valve spool 22 and the suction valve spring seat 19; the suction valve cover 18 is screwed to the valve body 15, and the suction valve pressure adjusting screw 17 is screwed to the suction valve cover 18 and abuts against the suction valve spring seat 19 to adjust the valve opening pressure of the suction valve assembly 4. When the suction valve component is opened, the annular gaps between the suction valve spring and the valve body are communicated with the valve inlet and the valve outlet of the suction valve component to form a liquid flow channel.
In some embodiments, the valve-out assembly 12 includes a valve-out spool 23, a valve-out spring 25, a valve-out valve seat 24, a valve-out spring seat 26, a valve-out cover 27, and a valve-out pressure regulating screw 28, the valve-out spring 25 is abutted against the valve-out spool 23 and the valve-out spring seat 26, the valve-out cover 27 is screwed to the valve body 15, and the valve-out pressure regulating screw 28 is screwed to the valve-out cover 27 and abutted against the valve-out spring seat 26 for regulating the valve-opening pressure of the valve-out assembly 12. When the extrusion valve assembly is opened, the annular gaps between the extrusion valve spring and the valve body are communicated with the valve inlet and the valve outlet of the extrusion valve assembly to form a liquid flow channel.
The valve ports of the suction valve assembly 4 and the extrusion valve assembly 12 are ball valves, cone valves or flat plate valves. The inner hole of the main overflow valve body 15 is a through hole with the same diameter, a sealing ring is arranged at the contact position of the main overflow valve core 7 and the main overflow valve body 15, and a sealing ring is arranged at the contact position of the main overflow valve spring seat 16 and the main overflow valve body 15; the main overflow valve seat 8 is arranged on the main overflow valve body 15 through threads, and a seal ring is arranged on the main overflow valve seat 8 to isolate the main overflow valve inlet 9 from the main overflow valve outlet 10; and sealing rings are arranged on the extrusion valve seat 24, the suction valve seat 20, the extrusion valve spring seat 26 and the suction valve spring seat 19 to isolate the main overflow valve damping cavity 14 from the main overflow valve outlet 10 and the external environment.
The specific working principle, process and beneficial effects of the direct-acting overflow valve with the damping element with the adjustable distributing valve provided by the embodiment of the invention are as follows.
Before the overflow valve works formally, the main overflow valve damping cavity 14 needs to be filled with working medium by a certain method. The main overflow valve gland 2, the main overflow valve pressure regulating screw 1 and the main overflow valve spring seat 16 can be opened, working media are manually filled into the main overflow valve damping cavity 14, the suction valve spool 22 or the extrusion valve spool 23, the main overflow valve gland 2, the main overflow valve pressure regulating screw 1 and the main overflow valve spring seat 16 can also be removed, the power source is started, the main overflow valve is enabled to overflow for multiple times, the working media can enter the main overflow valve damping cavity through a flow channel in the suction valve assembly 4 or the extrusion valve assembly 12, and finally the suction valve spool 22, the extrusion valve spool 23, the main overflow valve gland 2, the main overflow valve pressure regulating screw 1 and the main overflow valve spring seat 16 are installed.
When the pressure of the inlet 9 of the main overflow valve is higher than the set pressure value of the main overflow valve, the valve core 7 of the main overflow valve leaves the valve seat 8 of the main overflow valve, the overflow valve port is opened at the moment, and the volume of the damping cavity 14 of the main overflow valve is compressed due to the movement of the valve core 7 of the main overflow valve, so that the pressure of the damping cavity 14 of the main overflow valve is increased. The high pressure of the main spill valve damping chamber 14 will prevent the valve port from opening further. When the pressure of the main overflow valve damping cavity 14 is higher than the set pressure of the pressure valve assembly 12, the pressure valve port is opened, so that a part of liquid leaves the main overflow valve damping cavity 14 and enters the main overflow valve outlet 10, therefore, the pressure valve assembly 12 ensures that the pressure valve assembly only can block but not stop the movement of the overflow valve core 7, and the function of the pressure valve assembly is the same as that of a conventional damping element. Similarly, when the relief valve port reaches the maximum opening, the main relief valve element 7 may move towards the main relief valve seat 8, so that the opening of the valve port is reduced, and at this time, the volume of the damping cavity 14 of the main relief valve is increased due to the movement of the main relief valve element 7, so that the pressure of the damping cavity 14 of the main relief valve is reduced, and the relief valve port is closed. The low pressure of the main spill valve damping chamber 14 will prevent further valve port closure. When the pressure of the damping cavity 14 of the main overflow valve is reduced to a certain degree, the suction valve assembly 4 can be opened under the action of the pressure of the outlet 10 of the main overflow valve, and a part of liquid is sucked into the damping cavity 14 of the main overflow valve, so that the suction valve assembly 4 also ensures that the suction valve assembly only can block but not stop the movement of the overflow valve core 7, and plays the same role as a conventional damping element. And the higher the movement speed of the main overflow valve core 7 is, the higher the pressure rising or falling speed of the main overflow valve damping cavity 14 is, so that the opening degrees of the valve ports of the extrusion valve assembly 12 and the suction valve assembly 4 are increased, and further the pressure of the main overflow valve damping cavity 14 is greatly increased or reduced, the stronger the barrier effect on the main overflow valve core 7 is, the violent vibration of the main overflow valve core 7 can be prevented, and under the reciprocating action, the suction valve assembly 4 and the extrusion valve assembly 12 can control the main overflow valve core 7 to keep a relatively stable state.
The damping effect of the overflow valve is provided by the opening pressures of the extrusion valve assembly 12 and the suction valve assembly 4, when the opening pressures of the extrusion valve assembly 12 and the suction valve assembly 4 are smaller, the damping effect is weaker, and when the opening pressures of the extrusion valve assembly 12 and the suction valve assembly 4 are larger, the damping effect is stronger; the damping effect can be adjusted in a very simple manner by adjusting the pressure adjusting screws of the outlet valve assembly 12 and the inlet valve assembly 4. Therefore, the adjustment and the transformation between the strength and the weakness of the damping effect can be directly carried out in the working process of the overflow valve, the overflow valve does not need to be disassembled or assembled and parts do not need to be replaced, and the conversion of different damping effects by using one set of damping elements is really realized; the overflow valve can be adjusted to achieve the optimal damping effect in the working process of the overflow valve, and the processing, material, labor and time costs are greatly saved.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A damping element of the adjustable valving type, characterized in that it comprises a suction valve assembly (4) and a delivery valve assembly (12) arranged on a main relief valve body (15),
a valve inlet (6) of the suction valve component is connected with an outlet flow channel (29) of the main overflow valve, and a valve outlet (5) of the suction valve component is communicated with a damping cavity (14) of the main overflow valve; a valve inlet (13) of the extrusion valve assembly is connected with a damping cavity (14) of the main overflow valve, and a valve outlet (11) of the extrusion valve assembly is connected with an outlet flow channel (29) of the main overflow valve.
2. Damping element according to claim 1, characterized in that the suction valve assembly (4) and the pressure valve assembly (12) are both overflow valves.
3. The damping element according to claim 2, characterized in that the suction valve assembly (4) comprises a suction valve spool (22), a suction valve spring (21), a suction valve seat (20), a suction valve spring seat (19), a suction valve gland (18) and a suction valve pressure regulating screw (17), the suction valve spring (21) abutting against the suction valve spool (22) and the suction valve spring seat (19);
the suction valve pressure regulating screw (17) is mounted on the suction valve pressure cover (18) through threads and abuts against a suction valve spring seat (19) and is used for regulating the valve opening pressure of the suction valve component (4).
4. Damping element according to claim 2, characterized in that the delivery valve assembly (12) comprises a delivery valve spool (23), a delivery valve spring (25), a delivery valve seat (24), a delivery valve spring seat (26), a delivery valve gland (27) and a delivery valve pressure regulating screw (28), the delivery valve spring (25) abutting against the delivery valve spool (23) and the delivery valve spring seat (26),
the extrusion valve gland (27) is connected to the valve body (15) through threads, and the extrusion valve pressure regulating screw (28) is installed on the extrusion valve gland (27) through threads and abuts against the extrusion valve spring seat (26) and is used for regulating the valve opening pressure of the extrusion valve component (12).
5. Damping element according to claim 3 or 4, characterized in that the valve ports of the suction valve assembly (4) and the pressure valve assembly (12) are ball valves, cone valves or plate valves.
6. A direct-acting relief valve comprising an adjustable valving-type damping element as defined in any one of claims 1 to 5.
7. A pilot operated excess flow valve including an adjustable valving damping element as defined in any one of claims 1 to 5.
8. The direct-acting overflow valve according to claim 6, further comprising a main overflow valve core (7), a main overflow valve seat (8) and a pressure regulating assembly, wherein the main overflow valve body (15) is provided with a main overflow valve inlet (9) and a main overflow valve outlet (10);
the pressure regulating assembly comprises a main overflow valve spring (3), a main overflow valve spring seat (16), a main overflow valve pressure regulating screw rod (1) and a main overflow valve gland (2), wherein the main overflow valve spring (3) abuts against a main overflow valve spool (7) and the main overflow valve spring seat (16), the main overflow valve gland (2) is connected to the top of a main overflow valve body (15) through threads, and the main overflow valve pressure regulating screw rod (1) is connected to the main overflow valve gland (2) through threads and abuts against the main overflow valve spring seat (16);
and a main overflow valve damping cavity (14) is formed among the main overflow valve spool (7), the main overflow valve body (15) and the main overflow valve spring seat (16).
9. The direct-acting overflow valve according to claim 8, wherein the inner hole of the main overflow valve body (15) is a through hole with the same diameter, a sealing ring is arranged at the contact position of the main overflow valve core (7) and the main overflow valve body (15), and a sealing ring is arranged at the contact position of the main overflow valve spring seat (16) and the main overflow valve body (15); the main overflow valve seat (8) is installed on the main overflow valve body (15) through threads, and a seal ring is arranged on the main overflow valve seat (8) to isolate the main overflow valve inlet (9) from the main overflow valve outlet (10).
10. The direct overflow valve of claim 9 wherein the outlet valve seat (24), the inlet valve seat (20), the outlet valve spring seat (26) and the inlet valve spring seat (19) are provided with sealing rings to isolate the main overflow valve damping chamber (14) from the main overflow valve outlet (10) and from the environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111443870.2A CN114183424B (en) | 2021-11-30 | 2021-11-30 | Damping element of adjustable distributing valve type, direct-acting overflow valve and pilot-operated overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111443870.2A CN114183424B (en) | 2021-11-30 | 2021-11-30 | Damping element of adjustable distributing valve type, direct-acting overflow valve and pilot-operated overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183424A true CN114183424A (en) | 2022-03-15 |
| CN114183424B CN114183424B (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111443870.2A Active CN114183424B (en) | 2021-11-30 | 2021-11-30 | Damping element of adjustable distributing valve type, direct-acting overflow valve and pilot-operated overflow valve |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES1037340U (en) * | 1997-05-20 | 1998-02-16 | Ubeda Gazquez Pedro | Anti-flood valve automatic. (Machine-translation by Google Translate, not legally binding) |
| CN201547064U (en) * | 2009-11-26 | 2010-08-11 | 哈尔滨理工大学 | Soft-start overflow valve with adjustable starting time |
| CN202834247U (en) * | 2012-09-05 | 2013-03-27 | 北京工业大学 | Pure water hydraulic electromagnetism unloading overflow valve |
| CN105526202A (en) * | 2015-12-04 | 2016-04-27 | 安徽理工大学 | Overflow valve with pressure regulating and safety functions |
| CN108561357A (en) * | 2018-01-20 | 2018-09-21 | 邵立坤 | A kind of plug-in proportional pressure control valve |
-
2021
- 2021-11-30 CN CN202111443870.2A patent/CN114183424B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES1037340U (en) * | 1997-05-20 | 1998-02-16 | Ubeda Gazquez Pedro | Anti-flood valve automatic. (Machine-translation by Google Translate, not legally binding) |
| CN201547064U (en) * | 2009-11-26 | 2010-08-11 | 哈尔滨理工大学 | Soft-start overflow valve with adjustable starting time |
| CN202834247U (en) * | 2012-09-05 | 2013-03-27 | 北京工业大学 | Pure water hydraulic electromagnetism unloading overflow valve |
| CN105526202A (en) * | 2015-12-04 | 2016-04-27 | 安徽理工大学 | Overflow valve with pressure regulating and safety functions |
| CN108561357A (en) * | 2018-01-20 | 2018-09-21 | 邵立坤 | A kind of plug-in proportional pressure control valve |
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| CN114183424B (en) | 2023-01-24 |
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