Marine electro-hydraulic reversing valve with throttling structure

Abstract

The utility model discloses a marine electro-hydraulic reversing valve with a throttling structure, which comprises a marine electro-hydraulic reversing valve body, both ends of the marine electro-hydraulic reversing valve body are provided with end covers, a main valve core is arranged in the marine electro-hydraulic reversing valve body, and both ends of the main valve core are provided with spring cavities. The movable plate is adjusted to slide in the movable groove, the push rod is driven to abut against one end of the main valve element, the main valve element is pushed to move, the position of the main valve element is adjusted, when the main valve element moves to a proper position, the positioning block is inserted into the corresponding positioning groove through cooperation of the elastic adjusting mechanism, and the position of the push rod is limited and fixed. At the moment, the size of the oil port of the marine electro-hydraulic reversing valve body can be changed along with the change of the position of the main valve element, so that the function of controlling flow is achieved while reversing is achieved, the throttling effect of the marine electro-hydraulic reversing valve body is achieved, and operation is very easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electro-hydraulic reversing valves, in particular to a marine electro-hydraulic reversing valve with a throttling structure. Background Art

[0002] The electro-hydraulic reversing valve is a combination of an electromagnetic reversing valve and a hydraulically controlled reversing valve. It uses an electromagnetic reversing valve to control the action of a hydraulically controlled reversing valve and to control the flow direction of a fluid. The electro-hydraulic reversing valve is a high-power hydraulic component that is jointly controlled by electricity and hydraulics. It plays a reversing and switching role in the hydraulic system. The electro-hydraulic reversing valve is also frequently used in the hydraulic systems of ships.

[0003] In the prior art, there is an electro-hydraulic reversing valve with application number: 201921236055.7, which can push the push rod to move by twisting the adjusting handle, thereby pushing the movement of the main valve core to achieve the change of the main valve core position, thereby achieving the function of controlling the flow while achieving reversal; however, when the electro-hydraulic reversing valve is actually adjusting the control flow, since the two push rods are respectively against the two ends of the main valve core, when adjusting the position of one of the push rods, the operator needs to synchronously adjust the position of the push rod at the other end, otherwise the main valve core position cannot be moved. This method of adjusting the main valve core is very cumbersome to operate. Therefore, we propose a marine electro-hydraulic reversing valve with a throttling structure to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a marine electro-hydraulic reversing valve with a throttling structure, which is used to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A marine electro-hydraulic reversing valve with a throttling structure comprises a marine electro-hydraulic reversing valve body, both ends of the marine electro-hydraulic reversing valve body are provided with end covers, a main valve core is provided in the marine electro-hydraulic reversing valve body, both ends of the main valve core are provided with spring chambers, one end of a first spring is fixedly installed on an inner wall of one side of the spring chamber, and the other end of the first spring is fixedly installed on one end of the main valve core, a solenoid valve is provided on the marine electro-hydraulic reversing valve body, both sides of the solenoid valve are provided with electromagnets, and two control oil circuits are respectively provided in the marine electro-hydraulic reversing valve body, and one of the two control oil circuits is provided with a first spring. The two ends are respectively connected with the corresponding spring chambers, and the other ends of the two control oil circuits are connected with the solenoid valve. A round sleeve is fixedly installed on one side of the end cover, and a movable groove is opened in the round sleeve. A plurality of positioning grooves are respectively opened on the inner walls of the movable groove. A movable plate is movably installed in the movable groove, and a push rod is fixedly installed on one side of the movable plate. One end of the push rod is movably extended to the corresponding spring chamber, and a circular chamber is opened in the movable plate. A positioning block is installed in the circular chamber through an elastic force adjustment mechanism, and one end of the positioning block movably penetrates to the outside of the movable plate and is plugged into the corresponding positioning groove.

[0007] Preferably, the main valve core is located in the middle of the marine electro-hydraulic reversing valve body, and the two first springs at both ends of the main valve core are symmetrically arranged.

[0008] Preferably, both electromagnets are provided with explosion-proof valves, and the two explosion-proof valves are symmetrically arranged.

[0009] Preferably, the plurality of positioning grooves are arranged equidistantly, and the cross-section of the positioning grooves is arranged in a rectangular structure.

[0010] Preferably, a convex head is provided at one end of the push rod, and the convex head at one end of the push rod is located at one end of the main valve core.

[0011] Preferably, the elastic force adjustment mechanism includes a circular plate, a connecting plate and a second spring. The circular plate is movably installed in the circular chamber, and the circular plate is fixedly connected to the positioning block. A connecting plate is fixedly installed on the top side of the circular plate, and one end of the connecting plate movably passes through the outside of the movable plate. One end of the second spring is fixedly installed on the top side of the circular plate, and the other end of the second spring is fixedly installed on one side inner wall of the circular chamber. The positioning block can be movably adjusted by the elastic force adjustment mechanism.

[0012] The beneficial effects of the utility model are as follows: the marine electro-hydraulic reversing valve with a throttling structure drives the push rod to abut against one end of the main valve core and push the main valve core to move by adjusting the movable plate to slide in the movable groove, thereby realizing position adjustment of the main valve core. When the main valve core moves to a suitable position, the positioning block is inserted into the corresponding positioning groove through the cooperation of the elastic adjustment mechanism to realize position limiting and fixing of the position of the push rod. At this time, the size of the oil port of the marine electro-hydraulic reversing valve body will change due to the change in the position of the main valve core, thereby realizing the function of controlling the flow while realizing reversal, so that the marine electro-hydraulic reversing valve body achieves a throttling effect, and the operation is very simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model in a three-dimensional partial cross-section;

[0014] Figure 2 For this utility model Figure 1 The structural diagram of part A in the figure;

[0015] Figure 3 It is a structural schematic diagram of a partial cross-section of the movable panel of the utility model from an exploded perspective.

[0016] In the figure: 1. marine electro-hydraulic reversing valve body; 2. end cover; 3. main valve core; 4. spring chamber; 5. first spring; 6. control oil circuit; 7. solenoid valve; 8. electromagnet; 9. explosion-proof valve; 10. round sleeve; 11. movable groove; 12. positioning groove; 13. movable plate; 14. push rod; 15. round chamber; 16. positioning block; 17. round plate; 18. connecting plate; 19. second spring. DETAILED DESCRIPTION

[0017] 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.

[0018] Example: Refer to Figure 1-3A marine electro-hydraulic reversing valve with a throttling structure comprises a marine electro-hydraulic reversing valve body 1, end covers 2 are arranged at both ends of the marine electro-hydraulic reversing valve body 1, a main valve core 3 is arranged in the marine electro-hydraulic reversing valve body 1, spring chambers 4 are arranged at both ends of the main valve core 3, one end of a first spring 5 is fixedly installed on the inner wall of one side of the spring chamber 4, and the other end of the first spring 5 is fixedly installed on one end of the main valve core 3, a solenoid valve 7 is arranged on the marine electro-hydraulic reversing valve body 1, and electromagnets 8 are arranged on both sides of the solenoid valve 7, two control oil circuits 6 are respectively arranged in the marine electro-hydraulic reversing valve body 1, one end of the two control oil circuits 6 is respectively connected with the corresponding spring chamber 4, and the other end of the two control oil circuits 6 is connected with the solenoid valve 7, a round sleeve 10 is fixedly installed on one side of the end cover 2, a movable groove 11 is arranged in the round sleeve 10, and a plurality of positioning grooves 12 are respectively arranged on the inner wall of the movable groove 11, and the movable groove 11 is provided with a plurality of positioning grooves 12. A movable plate 13 is movably installed inside, a push rod 14 is fixedly installed on one side of the movable plate 13, one end of the push rod 14 is movably extended into the corresponding spring cavity 4, a circular chamber 15 is opened in the movable plate 13, a positioning block 16 is installed in the circular chamber 15 through an elastic force adjustment mechanism, the elastic force adjustment mechanism includes a circular plate 17, a connecting plate 18 and a second spring 19, a circular plate 17 is movably installed in the circular chamber 15, the circular plate 17 is fixedly connected to the positioning block 16, a connecting plate 18 is fixedly installed on the top side of the circular plate 17, one end of the connecting plate 18 is movably penetrated to the outside of the movable plate 13, one end of the second spring 19 is fixedly installed on the top side of the circular plate 17, the other end of the second spring 19 is fixedly installed on one side inner wall of the circular chamber 15, the positioning block 16 is conveniently adjusted by the elastic force adjustment mechanism; one end of the positioning block 16 is movably penetrated to the outside of the movable plate 13 and inserted into the corresponding positioning groove 12.

[0019] Furthermore, the main valve core 3 is located in the middle of the marine electro-hydraulic reversing valve body 1 , and the two first springs 5 ​​at both ends of the main valve core 3 are symmetrically arranged.

[0020] Furthermore, explosion-proof valves 9 are provided on the two electromagnets 8 , and the two explosion-proof valves 9 are symmetrically arranged.

[0021] Furthermore, the plurality of positioning grooves 12 are arranged at equal intervals, and the cross-section of the positioning grooves 12 is arranged in a rectangular structure.

[0022] Furthermore, a convex head is provided at one end of the push rod 14 , and the convex head at one end of the push rod 14 is located at one end of the main valve core 3 .

[0023] During use: when it is necessary to control the flow through the main valve core 3, the operator adjusts the connecting plate 18 upwards so that the circular plate 17 drives the positioning block 16 to move upward in the circular chamber 15, so that the second spring 19 is deformed and compressed by force, so that the positioning block 16 is recovered into the movable plate 13. After that, the movable plate 13 is adjusted to move in the movable groove 11 toward the marine electro-hydraulic reversing valve body 1, thereby driving the push rod 14 to abut against one end of the main valve core 3 and push the main valve core 3 to move, so as to adjust the position of the main valve core 3. When the main valve core 3 moves to a suitable position, the connecting plate 18 is loosened, and under the elastic force of the second spring 19, the positioning block 16 is inserted into the corresponding positioning groove 12, so as to limit and fix the position of the push rod 14. At this time, the size of the oil port of the marine electro-hydraulic reversing valve body 1 will change due to the change in the position of the main valve core 3, thereby realizing the function of controlling the flow while achieving reversal.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marine electro-hydraulic reversing valve with a throttling structure, comprising a marine electro-hydraulic reversing valve body (1), characterized in that: End covers (2) are provided at both ends of the marine electro-hydraulic reversing valve body (1), a main valve core (3) is provided in the marine electro-hydraulic reversing valve body (1), spring chambers (4) are provided at both ends of the main valve core (3), one end of a first spring (5) is fixedly mounted on an inner wall of one side of the spring chamber (4), and the other end of the first spring (5) is fixedly mounted on one end of the main valve core (3), a solenoid valve (7) is provided on the marine electro-hydraulic reversing valve body (1), and electromagnets (8) are provided on both sides of the solenoid valve (7), and two control oil circuits (6) are respectively provided in the marine electro-hydraulic reversing valve body (1), one end of the two control oil circuits (6) is respectively connected to the corresponding spring chamber (4), and the other end of the two control oil circuits (6) is connected to the corresponding spring chamber (4). The end is connected with the electromagnetic valve (7), a round sleeve (10) is fixedly installed on one side of the end cover (2), a movable groove (11) is provided in the round sleeve (10), and a plurality of positioning grooves (12) are respectively provided on the inner wall of the movable groove (11), a movable plate (13) is movably installed in the movable groove (11), a push rod (14) is fixedly installed on one side of the movable plate (13), one end of the push rod (14) is movably extended into the corresponding spring cavity (4), a round chamber (15) is provided in the movable plate (13), a positioning block (16) is installed in the round chamber (15) through an elastic force adjustment mechanism, and one end of the positioning block (16) is movably penetrated to the outside of the movable plate (13) and inserted into the corresponding positioning groove (12).

2. A marine electro-hydraulic reversing valve with a throttling structure according to claim 1, characterized in that: The main valve core (3) is located in the middle of the marine electro-hydraulic reversing valve body (1), and the two first springs (5) at both ends of the main valve core (3) are symmetrically arranged.

3. A marine electro-hydraulic reversing valve with a throttling structure according to claim 1, characterized in that: The two electromagnets (8) are both provided with explosion-proof valves (9), and the two explosion-proof valves (9) are symmetrically arranged.

4. A marine electro-hydraulic reversing valve with a throttling structure according to claim 1, characterized in that: A plurality of positioning grooves (12) are arranged at equal intervals, and the cross-section of the positioning grooves (12) is arranged in a rectangular structure.

5. The marine electro-hydraulic reversing valve with a throttling structure according to claim 1, characterized in that: One end of the push rod (14) is provided with a convex head, and the convex head at one end of the push rod (14) is located at one end of the main valve core (3).

6. A marine electro-hydraulic reversing valve with a throttling structure according to claim 1, characterized in that: The elastic force adjustment mechanism comprises a circular plate (17), a connecting plate (18) and a second spring (19); the circular plate (17) is movably installed in the circular chamber (15); the circular plate (17) is fixedly connected to the positioning block (16); a connecting plate (18) is fixedly installed on the top side of the circular plate (17); one end of the connecting plate (18) is movably penetrated to the outside of the movable plate (13); one end of the second spring (19) is fixedly installed on the top side of the circular plate (17); and the other end of the second spring (19) is fixedly installed on one inner wall of the circular chamber (15).

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