One-way damping stabilizing valve

Abstract

The utility model discloses a one-way damping stabilizing valve which comprises a valve body, the valve body is provided with a forward access port, a reverse access port and a one-way valve channel, the forward access port and the reverse access port are communicated through the one-way valve channel, an adjusting valve channel is further arranged in the valve body, and the forward access port and the reverse access port are communicated through the adjusting valve channel. A first adjusting unit, an adjusting valve element and a second adjusting unit are sequentially arranged in the adjusting valve channel, and the first adjusting unit and the second adjusting unit jointly control the size of an overflowing channel of the adjusting valve element. When liquid flows in the reverse direction, stable flowing of the liquid can be achieved, and then stability of hydraulic equipment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a one-way damping stabilizing valve. Background Art

[0002] Since the inclination angle of the lever arm, the circumferential radius, etc. change with the movement process, the torque at different stages changes unstably, causing the flow of hydraulic oil to change at any time, resulting in unstable operation. Generally, during the lifting process, it is necessary to pressurize the hydraulic oil to fill the hydraulic cylinder and lift the lever arm. At this time, it is hoped that the pipeline will reduce resistance as much as possible to ensure smooth lifting or hoisting. When the lever arm is lowered, due to the effect of gravity, the hydraulic oil in the cylinder is driven by the extrusion force and will flow out of the cylinder into the pipeline. Since the lever arm has different forces on the hydraulic cylinder at different inclination angles, the speed of oil leakage will change greatly. In addition to affecting the service life of the equipment, this unstable state also poses the risk of affecting production safety and causing engineering accidents.

[0003] At present, the unstable situation of hydraulic lifting arm release mainly relies on real-time manual adjustment of valves to maintain its stability as much as possible. Since the fluid flow in hydraulic equipment is not large, it is difficult to control it manually. Such operation increases labor intensity and has the risk of operational errors and accidents.

[0004] In the prior art, there are also related hydraulic flow limiting technologies. For example, the utility model "A Hydraulic One-Way Damping Valve" (authorization announcement number CN 212643206 U) describes a fixed small channel as a damping component. Since the aperture is fixed, it is effective for environments with fixed pressure and flow. However, when used in an environment with variable pressure difference, the flow rate will change significantly with the change in the pressure difference, and stable flow cannot be achieved, and the purpose of stable pressure relief (release) cannot be achieved.

[0005] Others, such as "A one-way damper with variable damping force" (authorization announcement number CN 108799391 B), are designed for impact-type instantaneous large pressure difference changes, do not have the characteristics of continuous stability, and have a complex structure. They are mainly suitable for installation in an environment with a fixed spatial position and unchanged orientation. They are not suitable for random placement in temporary hydraulic pipelines or field construction.

[0006] The "pull-type variable throttling hydraulic damper" (authorization announcement number CN 202251616 U) is based on a fixed damping channel and adds the function of instantaneous release under large pressure differential conditions. That is, within the conventional pressure differential range, a fixed small aperture is used to release pressure to achieve small channel damping. When the pressure differential increases to a certain extent, the pressure relief aperture begins to increase, and the damping effect decreases or disappears. This is contrary to the purpose of the utility model to solve the problem and will bring huge risks to construction.

[0007] Other hydraulic servo systems implemented by electromechanical control, such as "a hydraulic servo unit" (CN202579475U) and "a hydraulic control system for a rubber joint machine" (CN104669575B), are not suitable for variable working environments in the field.

[0008] In short, the technical solutions of the above-disclosed technologies, the technical problems to be solved and the beneficial effects produced are all different from the present utility model. Regarding more technical features, technical problems to be solved and the beneficial effects of the present utility model, there is no technical inspiration in the above-disclosed technical documents. Utility Model Content

[0009] In view of the above-mentioned defects in the prior art, the purpose of the utility model is to provide a one-way damping stabilizing valve.

[0010] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0011] The utility model provides a one-way damping stabilizing valve, comprising a valve body, wherein the valve body is provided with a forward access port, a reverse access port, and a one-way valve channel, wherein the one-way valve channel connects the forward access port and the reverse access port, and wherein a regulating valve channel is further provided in the valve body, wherein the regulating valve channel connects the forward access port and the reverse access port; wherein a first regulating unit, a regulating valve core, and a second regulating unit are sequentially arranged in the regulating valve channel, wherein the first regulating unit and the second regulating unit jointly control the size of the flow channel of the regulating valve core.

[0012] Furthermore, the forward access port and the reverse access port are arranged relative to each other;

[0013] Specifically, the regulating valve channel intersects with the one-way valve channel and are not at the same height.

[0014] Furthermore, the one-way valve channel includes a pre-valve channel, a one-way valve, and a post-valve channel;

[0015] Specifically, the pre-valve channel is communicated with the forward access port, and the post-valve channel is communicated with the reverse access port.

[0016] Furthermore, the inner diameter of the pre-valve channel is smaller than that of the post-valve channel;

[0017] Specifically, the one-way valve includes a valve ball, a spring, and a retaining ring;

[0018] Specifically, the valve ball, spring and retaining ring are arranged in the rear valve channel, the retaining ring is connected to the inner wall of the rear valve channel, the rear end of the spring pushes the retaining ring, and the front end pushes the valve ball, so that the valve ball is pushed on the port of the front valve channel, and the diameter of the valve ball is larger than the front valve channel and smaller than the rear valve channel.

[0019] Furthermore, a regulating valve core is arranged in the regulating valve channel, and the regulating valve core divides the regulating valve channel into a forward regulating channel and a reverse regulating channel;

[0020] Specifically, the regulating valve core includes a valve core cone and a valve body cone hole;

[0021] Specifically, the major diameter of the tapered hole of the valve body taper hole faces the positive adjustment channel, and the valve core taper can fit with the valve body taper hole in the positive adjustment channel;

[0022] Specifically, the bottom of the reverse regulating channel is connected to the forward access port by setting a front regulating channel, and the post-valve channel has an overlapping area with the bottom of the forward regulating channel and is connected through the overlapping area.

[0023] Furthermore, a first regulating unit and a valve core cone are provided in the forward regulating channel;

[0024] Specifically, the first adjustment unit includes a positive adjustment rod and a positive spring;

[0025] Specifically, a positive guide rod is arranged at the bottom of the cone of the valve core, a guide ring is arranged at the bottom edge of the cone of the valve core, and a reverse guide rod is arranged at the cone head of the valve core cone;

[0026] Specifically, the forward adjustment rod is threadedly connected to the forward adjustment channel port, and the forward adjustment rod is provided with a guide countersunk hole into which the forward guide rod can be inserted;

[0027] Specifically, the forward spring is arranged between the forward adjustment rod and the guide ring;

[0028] Specifically, the second conical surface of the valve core cone can fit with the first conical surface of the valve body conical hole, the reverse guide rod can pass through the valve body conical hole, and a flow channel is provided between the reverse guide rod and the valve body conical hole.

[0029] Furthermore, a second adjustment unit and a pressure cap are provided in the reverse adjustment channel;

[0030] Specifically, the second adjustment unit includes a reverse adjustment rod and a reverse spring;

[0031] Specifically, the reverse adjustment rod is threadedly connected to the reverse adjustment channel port, the reverse spring is arranged between the reverse adjustment rod and the pressure cap, and the reverse guide rod passes through the tapered hole of the valve body and presses on the lower end surface of the pressure cap.

[0032] Furthermore, sealing rings are provided between the forward adjustment rod and the forward adjustment channel, and between the reverse adjustment rod and the reverse adjustment channel.

[0033] Furthermore, during the dynamic movement of the regulating valve core, the space where the positive spring is located will not be directly connected to the post-valve channel, and the space where the reverse spring is located will not be directly connected to the post-regulation channel.

[0034] Furthermore, the forward spring and the reverse spring are always in a compressed state.

[0035] Compared with the prior art, the utility model has the following beneficial effects:

[0036] When the fluid passes through the regulating valve channel, no matter in the forward or reverse direction, there is an upper limit of the flow area between the valve core cone, the reverse guide stem and the valve body cone hole; when flowing in the forward direction, since the check valve channel is the main channel, it has little effect on the flow; when flowing in the reverse direction, a collecting effect is formed to ensure the upper limit of the flow rate, achieve safe operation, realize the stable flow of the liquid, and then realize the stability of the hydraulic equipment; at the same time, the pressure difference generated by the collecting flow is conducive to the smooth operation of the regulating valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the one-way damping stabilizing valve of the utility model;

[0038] Figure 2 It is a structural schematic diagram of the regulating valve core in the one-way damping stabilizing valve of the utility model;

[0039] In the figure: 1. forward adjusting rod; 2. valve body; 3. forward spring; 4. adjusting valve core; 5. reverse spring; 6. reverse adjusting rod; 7. one-way valve; 8. forward access port; 9. front channel of valve; 10. reverse access port; 11. rear channel of valve; 12. rear channel of adjustment; 13. forward guide rod; 14. valve core cone; 15. reverse guide rod; 16. cone hole of valve body. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] Embodiment 1:

[0042] See also Figure 1 to Figure 2 The one-way damping stabilizing valve provided by the utility model comprises a valve body 2, wherein the valve body is provided with a forward access port 8 and a reverse access port 10, wherein the forward access port 8 and the reverse access port 10 are arranged opposite to each other, and the forward access port 8 and the reverse access port 10 connect the valve body in series to the hydraulic pipeline.

[0043] A one-way valve channel is provided in the valve body 2, and the one-way valve channel connects the forward access port 8 and the reverse access port 10. The one-way valve channel includes a front-valve channel 9, a one-way valve 7, and a rear-valve channel 11. The front-valve channel 9 is connected with the forward access port 8, and the rear-valve channel 11 is connected with the reverse access port 10. The inner diameter of the front-valve channel 9 is smaller than that of the rear-valve channel 11. The one-way valve 7 includes a valve ball, a spring, and a retaining ring. The valve ball, spring, and retaining ring are arranged in the rear-valve channel 11, and the retaining ring is connected to the inner wall of the rear-valve channel 11. The rear end of the spring pushes the retaining ring, and the front end pushes the valve ball, so that the valve ball is pushed onto the port of the front-valve channel 9. The diameter of the valve ball is larger than that of the front-valve channel 9 and smaller than that of the rear-valve channel 11.

[0044] When the hydraulic oil flows from the forward inlet 8 to the reverse inlet 10, the one-way valve 7 opens and the flow passes unimpeded. When the flow direction is reversed, the one-way valve 7 is closed and the hydraulic oil cannot pass.

[0045] The valve body 2 is provided with a regulating valve channel, the regulating valve channel intersects with the one-way valve channel and is not at the same height; the regulating valve core 4 is provided in the regulating valve channel, the regulating valve core 4 divides the regulating valve channel into a forward regulating channel and a reverse regulating channel, the regulating valve core 4 includes a valve core cone 14 and a valve body conical hole 16, the conical hole major diameter of the valve body conical hole 16 faces the forward regulating channel, the valve core cone 14 can be matched with the valve body conical hole 16 in the forward regulating channel, the bottom of the reverse regulating channel is connected with the forward access port 8 by providing a front regulating channel 12, the valve rear channel 11 has an overlapping area with the bottom of the forward regulating channel, and is connected through the overlapping area;

[0046] The forward regulating channel is provided with a forward regulating rod 1, a forward spring 3, and a valve core cone 14; the cone bottom of the valve core cone 14 is provided with a forward guide rod 13, the cone bottom edge of the valve core cone 14 is provided with a guide ring, and the cone head of the valve core cone 14 is provided with a reverse guide rod 15; the forward regulating rod 1 is threadedly connected to the forward regulating channel port, the forward regulating rod 1 is provided with a guide countersunk hole capable of inserting the forward guide rod 13, the forward spring 3 is provided between the forward regulating rod 1 and the guide ring, the guide ring is, the second cone surface of the valve core cone 14 can fit with the first cone surface of the valve body cone hole 16, the reverse guide rod 15 can pass through the valve body cone hole 16, and a flow channel is provided between the reverse guide rod 15 and the valve body cone hole 16;

[0047] A reverse adjusting rod 6, a reverse spring 5 and a pressure cap are provided in the reverse adjusting channel; the reverse adjusting rod 6 is threadedly connected to the reverse adjusting channel port, the reverse spring 5 is provided between the reverse adjusting rod 6 and the pressure cap, and the reverse guide rod 15 passes through the tapered hole 16 of the valve body and presses on the lower end surface of the pressure cap.

[0048] A sealing ring is provided between the forward adjustment rod 1 and the forward adjustment channel, and between the reverse adjustment rod 6 and the reverse adjustment channel;

[0049] During the dynamic movement of the valve core cone 14, the space where the forward spring 5 is located will not be directly connected to the valve rear channel 11, and the space where the reverse spring 5 is located will not be directly connected to the adjustment rear channel 12. The forward spring 5 and the reverse spring 5 are always in a compressed state, and the position of the valve core cone 14 is controlled by the forward adjustment rod 1 and the reverse adjustment rod 6, thereby controlling the opening of the adjustment valve channel.

[0050] Specifically, when hydraulic oil flows in from the forward access port 8, it enters between the reverse adjustment rod 6 and the valve core through the post-adjustment channel 12, pushing the valve core cone 14 to move toward the forward adjustment rod 1, expanding the flow channel, ensuring unimpeded flow of liquid, and then enters the reverse access port 10 through the opening on the side of the post-valve channel 11 between the forward adjustment rod 1 and the valve core cone 14.

[0051] Specifically, when the flow is reverse, the hydraulic oil flows along the reverse access port 10, through the valve rear channel 11, into the space between the forward regulating rod 1 and the valve core cone 14, along the space between the valve core cone 14 and the tapered hole of the control valve body 2, and through the adjustment rear channel 12 to the forward access port 8. During this period, due to the one-way valve cut-off, the shrinking effect between the valve core cone 14 and the tapered hole of the control valve body 2 will generate a pressure difference at both ends of the regulating valve core 4. When the flow is faster (the speed increases), the pressure difference is greater, and the pressure difference drives the valve core cone 14 to move toward the valve body tapered hole 16, so that the flow area is reduced; when the flow slows down, the pressure difference at both ends of the regulating valve core 4 is reduced, and under the joint action of the forward spring 3 and the reverse spring 5, the valve core cone 14 tends to reset, and the flow area increases, which is conducive to the passage of hydraulic oil. Therefore, through the regulating effect of the valve core cone 14 on the flow area under different pressure differences, the dynamic stability of the reverse flow is achieved, and the purpose of one-way hydraulic stability control is achieved.

[0052] Embodiment 2:

[0053] This embodiment provides a method of using the utility model:

[0054] S1, connect the control valve in series to the hydraulic channel or pipeline, so that the hydraulic oil flows through the control valve;

[0055] The control valve consists of two channels, a one-way valve channel and a regulating valve channel, and its forward inlet 8 and reverse inlet 10 are both upstream and downstream of the hydraulic channel or pipeline;

[0056] The one-way valve channel keeps the liquid flowing in one direction;

[0057] The regulating valve channel adjusts the valve body through the bidirectional spring to keep it in a dynamic balance state;

[0058] S2. The main function of the one-way damping stabilizing valve is that when the liquid flows from the forward inlet 8 to the reverse inlet 10, the liquid passes directly along the regulating valve channel and the one-way valve channel at the same time.

[0059] S3. When the liquid flows from the reverse inlet 10 to the forward inlet 8, the one-way valve channel is blocked and only the regulating valve channel can pass.

[0060] At this time, the regulating valve channel is composed of the forward spring 3, the regulating valve core 4 (composed of the valve core cone 14 and the valve body cone hole 16), and the reverse spring 5 to form a damping flow core, and the liquid passes along the path of the forward spring 3, the valve core cone 14, and the reverse spring 5.

[0061] When the flow velocity is low, the pressure difference between the two ends of the regulating valve core 4 composed of the valve core cone 14 and the valve body cone hole 16 is small, which has little effect on the flow area of ​​the damping section. As the flow velocity increases, the pressure difference between the two ends of the regulating valve core 4 increases accordingly, driving the valve core cone 14 to move toward the valve body cone hole 16, reducing the flow area of ​​the regulating valve core 4.

[0062] At the same time, the control system composed of the forward spring 3 and the reverse spring 5 acts on the valve core cone 14 in the opposite direction to achieve rebalancing. The more rapid the liquid flow (faster flow rate), the greater the pressure difference at both ends of the regulating valve core 4, the greater the driving force on the valve core cone 14, and the smaller the flow area of ​​the regulating valve core 4. The balancing effect of the control system spring can achieve the stability of the flow rate.

[0063] S4. The pre-strain of the spring can be dynamically adjusted through the forward adjustment rod 1 and the reverse adjustment rod 6 to adjust the sensitivity and controllable range of the damping valve. When the pre-strain of the control system composed of the forward spring 3 and the reverse spring 5 is small, it will react significantly to a small flow pressure difference, that is, the sensitivity increases, otherwise, the sensitivity is poor. At this time, the controllable pressure difference range is relatively small.

[0064] The forward adjustment rod 1 and the reverse adjustment rod 6 can control the no-load (free state when no liquid flows) distance between the valve core cone 14 and the valve body cone hole 16 by adjusting the forward spring 3 and the reverse spring 5, thereby controlling the dynamic range between the maximum flow rate and the minimum flow rate of the damping valve.

[0065] All components and connection methods of components not discussed in this application belong to the known technologies in this technical field and can be directly applied without further explanation.

[0066] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0067] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0068] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A one-way damping stabilizing valve, comprising a valve body, wherein the valve body is provided with a forward access port, a reverse access port, and a one-way valve channel, wherein the one-way valve channel connects the forward access port and the reverse access port, and is characterized in that ； The valve body is also provided with a regulating valve channel, and the regulating valve channel connects the forward inlet and the reverse inlet; The regulating valve channel is provided with a first regulating unit, a regulating valve core, and a second regulating unit in sequence, and the first regulating unit and the second regulating unit jointly control the size of the flow channel of the regulating valve core.

2. The one-way damping stabilizing valve according to claim 1, characterized in that: The forward access port and the reverse access port are arranged opposite to each other; The regulating valve channel intersects with the one-way valve channel and is not at the same height.

3. The one-way damping stabilizing valve according to claim 1, characterized in that: The one-way valve channel includes a pre-valve channel, a one-way valve, and a post-valve channel; The pre-valve channel is communicated with the forward access port, and the post-valve channel is communicated with the reverse access port.

4. The one-way damping stabilizing valve according to claim 3, characterized in that: The inner diameter of the pre-valve channel is smaller than that of the post-valve channel; The one-way valve comprises a valve ball, a spring and a retaining ring; The valve ball, spring and retaining ring are arranged in the valve rear channel, the retaining ring is connected to the inner wall of the valve rear channel, the rear end of the spring pushes the retaining ring, and the front end pushes the valve ball, so that the valve ball is pushed on the port of the valve front channel, and the diameter of the valve ball is larger than the valve front channel and smaller than the valve rear channel.

5. The one-way damping stabilizing valve according to claim 3, characterized in that: A regulating valve core is arranged in the regulating valve channel, and the regulating valve core divides the regulating valve channel into a forward regulating channel and a reverse regulating channel; The regulating valve core comprises a valve core cone and a valve body cone hole; The major diameter of the tapered hole of the valve body faces the positive adjustment channel, and the valve core cone can fit with the tapered hole of the valve body in the positive adjustment channel; The bottom of the reverse regulating channel is connected to the forward access port by setting a front regulating channel, and the post-valve channel has an overlapping area with the bottom of the forward regulating channel and is connected through the overlapping area.

6. The one-way damping stabilizing valve according to claim 5, characterized in that: The forward regulating channel is provided with a first regulating unit and a valve core cone; The first adjustment unit includes a positive adjustment rod and a positive spring; The cone bottom of the valve core cone is provided with a positive guide rod, the cone bottom edge of the valve core cone is provided with a guide ring, and the cone head of the valve core cone is provided with a reverse guide rod; The forward adjustment rod is threadedly connected to the forward adjustment channel port, and the forward adjustment rod is provided with a guide countersunk hole into which the forward guide rod can be inserted; The forward spring is arranged between the forward adjustment rod and the guide ring; The second conical surface of the valve core cone can fit with the first conical surface of the valve body conical hole, the reverse guide rod can pass through the valve body conical hole, and a flow channel is provided between the reverse guide rod and the valve body conical hole.

7. The one-way damping stabilizing valve according to claim 6, characterized in that: The reverse adjustment channel is provided with a second adjustment unit and a pressure cap; The second adjustment unit includes a reverse adjustment rod and a reverse spring; The reverse regulating rod is threadedly connected to the reverse regulating channel port, the reverse spring is arranged between the reverse regulating rod and the pressing cap, and the reverse guide rod passes through the tapered hole of the valve body and presses on the lower end surface of the pressing cap.

8. The one-way damping stabilizing valve according to claim 7, characterized in that: A sealing ring is arranged between the forward adjustment rod and the forward adjustment channel, and between the reverse adjustment rod and the reverse adjustment channel.

9. The one-way damping stabilizing valve according to claim 7, characterized in that: During the dynamic movement of the regulating valve core, the space where the positive spring is located will not be directly connected to the valve rear passage, and the space where the reverse spring is located will not be directly connected to the regulating rear passage.

10. The one-way damping stabilizing valve according to claim 7, characterized in that: The forward spring and the reverse spring are always in a compressed state.

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