Overlapped hydraulic valve capable of reducing impact wear

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a stacked hydraulic valve capable of reducing impact wear, which comprises a valve body, a main runner arranged in the valve body, a liquid inlet pipe fixedly mounted at one end of the main runner, a liquid outlet pipe fixedly mounted at the other end of the main runner, and a one-way structure fixedly mounted in the main runner, an opening and closing channel located on the same straight line with the central axis of the liquid inlet pipe is formed in the valve body, the end of the opening and closing channel communicates with the main flow channel, an auxiliary flow channel communicating with the main flow channel and the opening and closing channel is further formed in the valve body, the one-way structure is located between the two ends of the auxiliary flow channel, and an opening and closing assembly sliding in the axial direction is installed in the opening and closing channel. When the flow entering the liquid inlet pipe is converted from small flow to large flow, liquid pressure can push the opening and closing assembly to move, the auxiliary flow channel is opened for liquid flow division, and therefore impact friction to the one-way structure is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a superimposed hydraulic valve that reduces impact wear. Background Technology

[0002] Stack valves are one type of hydraulic valve. Compared to traditional hydraulic valves, the biggest advantage of stack valves is that they can be installed without piping, thus reducing system leakage, vibration, and noise. Compared to traditional pipeline connections, stack valves require no special installation skills and make it very easy to modify the function of the hydraulic system. Because no piping is needed, the overall reliability of the system is enhanced, and routine inspection and maintenance are facilitated.

[0003] Currently, existing stack valves, when used in practice, need to supply different flow rates. When switching from a small flow rate to a large flow rate, there is only one internal pipeline passage in the stack valve. Therefore, the internal impact force increases when supplying a large flow rate. Over time, this can easily cause wear on the valve core and valve body, leading to a decrease in sealing performance.

[0004] The information disclosed in the background section is only intended to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to design a stacked hydraulic valve that reduces impact wear on the valve core and extends its service life when converting small flow rates to large flow rates, thereby addressing the aforementioned shortcomings in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stacked hydraulic valve for reducing impact wear, comprising a valve body, a main flow channel opened within the valve body, an inlet pipe fixedly installed at one end of the main flow channel, an outlet pipe fixedly installed at the other end of the main flow channel, and a one-way structure fixedly installed within the main flow channel. The valve body has an opening / closing channel aligned with the central axis of the inlet pipe, the end of which communicates with the main flow channel. The valve body also has an auxiliary flow channel communicating with the main flow channel and the opening / closing channel. The one-way structure is located between the two ends of the auxiliary flow channel. An axially sliding opening / closing component is installed within the opening / closing channel. When the flow rate entering the inlet pipe changes from a small flow rate to a large flow rate, the liquid pressure pushes the opening / closing component to move, opening the auxiliary flow channel to divert liquid, thereby reducing impact friction on the one-way structure.

[0007] Preferably, the unidirectional structure includes a housing fixedly connected to the main channel, a first spring fixedly connected inside the housing, and a valve core fixedly connected to the end of the first spring.

[0008] Preferably, the opening and closing assembly includes a piston that is slidably connected in the opening and closing channel, an annular groove opened in the side wall of the piston, a positioning plate provided in the annular groove, and a second spring that is fixedly connected between the piston and the valve body, wherein the positioning plate is fixedly connected to the valve body.

[0009] Preferably, when a small flow rate is introduced into the inlet pipe, the spring in its normal state will push the piston to block the auxiliary flow channel.

[0010] Preferably, when the piston is close to the inlet pipe and fits against the positioning plate, the auxiliary flow channel is fully open; when the piston is away from the inlet pipe and fits against the positioning plate, the auxiliary flow channel is fully closed.

[0011] Preferably, the spring constant of the second spring is greater than that of the first spring.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] 1. When the flow rate of this product is increased from a small flow rate to a large flow rate in the inlet pipe, the auxiliary flow channel will be opened, so that the liquid in the main flow channel is diverted to the auxiliary flow channel instead of passing through the valve core in the main flow channel. This reduces the impact and wear on the sealing performance when the flow rate increases, and solves the problem that the internal impact force increases when the flow rate is supplied at a large flow rate, which can easily wear the valve core and valve body parts after long-term use, resulting in a decrease in sealing performance.

[0014] 2. By utilizing the difference in elastic coefficients between the first and second springs, this valve can automatically adjust whether to activate the auxiliary flow channel according to the flow rate, thereby reducing the wear of the valve core by the liquid. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a cross-sectional view of the present invention;

[0017] Figure 2 This is a perspective view of the present utility model;

[0018] Figure 3 This utility model Figure 1 Enlarged view of the A-section structure;

[0019] Figure 4 This utility model Figure 1 Enlarged view of the structure of part B.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Valve body; 2. Main flow channel; 3. Inlet pipe; 4. Outlet pipe; 5. One-way structure; 501. Outer shell; 502. First spring; 503. Valve core; 6. Opening and closing channel; 7. Auxiliary flow channel; 8. Opening and closing assembly; 801. Piston; 802. Annular groove; 803. Positioning plate; 804. Second spring. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] Example:

[0025] like Figure 1-4 As shown, the valve includes a valve body 1, a main channel 2 opened inside the valve body 1, an inlet pipe 3 fixedly installed at one end of the main channel 2, and an outlet pipe 4 fixedly installed at the other end of the main channel 2. An opening and closing channel 6 communicating with the main channel 2 is opened inside the valve body 1. A piston 801 is slidably connected inside the opening and closing channel 6. An annular groove 802 is opened on the outer circumference of the piston 801. A positioning piece 803 fixedly connected to the valve body 1 is provided in the annular groove 802. A second spring 804 is also fixedly connected between the end of the piston 801 and the valve body 1. An auxiliary flow channel 7 is opened on one side of the opening and closing channel 6. The end of the auxiliary flow channel 7 away from the opening and closing channel 6 is connected to the main channel 2. A housing 501 is fixedly installed between the two ends of the main channel 2 and the auxiliary flow channel 7. A first spring 502 is fixedly connected inside the housing 501. A valve core 503 that seals against the inner wall of the housing 501 is fixedly connected to the end of the first spring 502.

[0026] When a small flow of liquid is introduced into the inlet pipe 3, the liquid enters the main channel 2 from the inlet pipe 3, squeezes the valve core 503 to compress the first spring 502, and then enters the lower half of the main channel 2 through the housing, and finally flows out from the outlet pipe 4. At this time, the first spring 502 is in a compressed state, while the second spring 804 is in a normal state.

[0027] When the flow rate entering the inlet pipe 3 changes from a small flow rate to a large flow rate, the pressure in the first half of the main flow channel 2 increases, pushing the piston 801 to compress the second spring 804. When the annular groove 802 of the piston 801 is close to the end of the inlet pipe 3 and fits with the positioning plate 803, the auxiliary flow channel 7 is fully opened. At this time, a part of the liquid in the main flow channel 2 will be diverted into the auxiliary flow channel 7 without passing through the valve core 503, and then flow into the outlet pipe 4 from the lower half of the main flow channel 2 and be discharged.

[0028] The above specific embodiments or examples are only used to explain the technical solutions of this utility model and are not intended to limit this application. Parts not described in detail are considered to be conventional technical means or common knowledge in the field. It can be understood by those skilled in the art that, based on the design concept of this application, adaptive modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications, equivalent substitutions, and adaptive improvements do not depart from the technical essence of this utility model and should all be covered within the protection scope of this application.

Claims

1. A stacked hydraulic valve for reducing impact wear, comprising a valve body (1), a main flow channel (2) opened within the valve body (1), an inlet pipe (3) fixedly installed at one end of the main flow channel (2), an outlet pipe (4) fixedly installed at the other end of the main flow channel (2), and a one-way structure (5) fixedly installed within the main flow channel (2), characterized in that: The valve body (1) has an opening and closing channel (6) that is on the same straight line as the central axis of the inlet pipe (3). The end of the opening and closing channel (6) is connected to the main channel (2). The valve body (1) also has an auxiliary flow channel (7) that is connected to the main channel (2) and the opening and closing channel (6). An axially sliding opening and closing component (8) is installed in the opening and closing channel (6). When the flow rate entering the inlet pipe (3) changes from a small flow rate to a large flow rate, the liquid pressure will push the opening and closing component (8) to move, opening the auxiliary flow channel (7) to allow liquid to flow separately, so as to reduce the impact friction on the unidirectional structure (5).

2. A superposed hydraulic valve with reduced impact wear according to claim 1, characterized in that: The unidirectional structure (5) includes a housing (501) fixedly connected to the main channel (2), a first spring (502) fixedly connected inside the housing (501), and a valve core (503) fixedly connected to the end of the first spring (502).

3. The superposed hydraulic valve of claim 1, wherein: The opening and closing assembly (8) includes a piston (801) slidably connected in the opening and closing channel (6), an annular groove (802) opened on the side wall of the piston (801), a positioning piece (803) slidably connected in the annular groove (802), and a second spring (804) fixedly connected between the piston (801) and the valve body (1). The positioning piece (803) is fixedly connected to the valve body (1).

4. A superposed hydraulic valve with reduced impact wear according to claim 3, characterized in that: When a small flow rate is introduced into the inlet pipe (3), the spring in its normal state will push the piston (801) to block the auxiliary flow channel (7).

5. A stacked hydraulic valve for reducing impact wear according to claim 3, characterized in that: When the annular groove (802) of the piston (801) is close to the inlet pipe (3) and fits with the positioning plate (803), the auxiliary flow channel (7) is fully opened; when the annular groove (802) is far from the inlet pipe (3) and fits with the positioning plate (803), the auxiliary flow channel (7) is fully closed.

6. The superposed hydraulic valve of claim 3, wherein: The elastic coefficient of the second spring (804) is greater than that of the first spring (502).

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