Reversing valve with adjustable closing force

Abstract

The utility model is applicable to the technical field of reversing valves, and provides a reversing valve with adjustable closing force, which comprises a three-way pipe, output ports are arranged on two sides of the three-way pipe, an input port is arranged at the bottom of the three-way pipe, a sealing base is fixedly connected inside the three-way pipe, a partition plate is arranged at the top of the sealing base, and a sealing cover is arranged at the bottom of the three-way pipe. The partition plate is fixedly connected with the sealing base and the three-way pipe. According to the reversing valve with the adjustable closing force, by arranging the sealing block, the sliding rod, the first screw rod, the spring and the rotating mechanism, the purpose of adjusting the hardness of the spring is achieved, then the purpose of adjusting the closing force of the reversing valve is achieved, and the problems that an existing reversing valve does not have the function of adjusting the closing force, and the closing force of the reversing valve cannot be adjusted are solved. The problems that when the closing force of the reversing valve is too large, a sealing ring is prone to being extruded and deformed, and when the closing force of the reversing valve is too small, the sealing performance of the reversing valve is poor, the water leakage phenomenon is prone to occurring, and practicability is poor are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of reversing valves, and in particular relates to a reversing valve with adjustable closing force. Background Art

[0002] The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. It is a valve that realizes the communication, cutting off and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control. It is a directional control valve that relies on the relative movement of the valve core and the valve body. There are two types of rotary valves and sliding valves.

[0003] The existing reversing valve does not have the function of adjusting the closing force, which causes the valve disc to be easily squeezed and deformed when the closing force is too large. When the closing force is too small, the sealing performance of the reversing valve is poor, water leakage is likely to occur, and the practicality is poor. Utility Model Content

[0004] The utility model provides a reversing valve with adjustable closing force, aiming to solve the problem that the existing reversing valve does not have the function of adjusting the closing force, resulting in the valve disc being easily squeezed and deformed when the closing force of the reversing valve is too large, and the sealing performance of the reversing valve is poor, water leakage is easy to occur, and the practicality is poor when the closing force of the reversing valve is too small.

[0005] The utility model is implemented as follows: a reversing valve with adjustable closing force comprises: a three-way pipe, both sides of the three-way pipe are provided with output ports, the bottom of the three-way pipe is provided with an input port, the inside of the three-way pipe is fixedly connected with a sealing base, the top of the sealing base is provided with a partition, the partition is fixedly connected to the sealing base and the three-way pipe, and both sides of the sealing base are provided with through holes; the top of the through hole is provided with a sealing block, the top of the sealing block is fixedly connected with a sliding rod, the outer surface of the sliding rod is slidably connected with a first screw rod, the top of the sliding rod is provided with a spring; the top of the spring is provided with a rotating mechanism for adjusting the hardness of the spring; the outer surface of the first screw rod is provided with a linkage mechanism for controlling the lifting and lowering of the first screw rod.

[0006] Preferably, the rotating mechanism comprises: an extrusion block is provided on the top of the spring, a second screw is fixedly connected to the top of the extrusion block, and the second screw is threadedly connected to the first screw respectively; and a knob is fixedly connected to the top of the second screw.

[0007] Preferably, the linkage mechanism includes: the outer surface of the first screw is threadedly connected with an internal threaded sleeve, the internal threaded sleeve is rotatably connected to the three-way pipe, and the outer surface of the internal threaded sleeve is fixedly connected with a first gear; the three-way pipe is fixedly connected with a bracket near the first screw, the bracket is fixedly connected with two sliders near the first screw, and the first screw is provided with a matching slide groove near the slider; a power mechanism for controlling the rotation of the internal threaded sleeve is arranged between the two first gears.

[0008] Preferably, the power mechanism includes: a second gear is arranged between the two first gears, and the first gears are meshed with the second gears; a rotating shaft is fixedly connected to the center of the second gear, the bottom end of the rotating shaft is rotatably connected to the three-way pipe, the top end of the rotating shaft passes through the bracket and extends to the motor, the rotating shaft is fixedly connected to the output end of the motor, and the motor is fixedly connected to the bracket.

[0009] Preferably, both sides of the top of the sliding rod are fixedly connected to limiting blocks, the first screw rod is provided with limiting grooves near the limiting blocks, and the limiting blocks are slidably connected to the limiting grooves.

[0010] Preferably, the sealing base is provided with a sealing ring near the through hole, and the sealing ring is fixedly connected to the sealing base.

[0011] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0012] By arranging a sealing block, a sliding rod, a first screw, a spring and a rotating mechanism, the purpose of adjusting the hardness of the spring is achieved, thereby achieving the purpose of adjusting the closing force of the reversing valve, thereby solving the problem that the existing reversing valve does not have the function of adjusting the closing force, which causes the sealing ring to be squeezed and deformed when the closing force of the reversing valve is too large, and the sealing performance of the reversing valve is poor, water leakage is easy to occur, and the practicality is poor when the closing force of the reversing valve is too small. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 The utility model Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a connection diagram of the first gear and the internal thread sleeve of the utility model;

[0016] Figure 4 The utility model Figure 3 Enlarged view of point B in the middle;

[0017] Figure 5 This is a connection diagram of the first gear and the second gear of the utility model.

[0018] In the figure: 1. three-way pipe; 2. output port; 3. input port; 4. sealing base; 5. partition; 6. through hole; 7. sealing block; 8. slide rod; 9. first screw rod; 10. spring; 11. rotating mechanism; 12. linkage mechanism; 13. extrusion block; 14. second screw rod; 15. knob; 16. internal threaded sleeve; 17. first gear; 18. bracket; 19. slide block; 20. slide groove; 21. power mechanism; 22. second gear; 23. rotating shaft; 24. motor; 25. limit block; 26. limit groove; 27. sealing ring. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] The utility model provides a reversing valve with adjustable closing force, such as Figure 1-5 As shown, it includes: a three-way pipe 1, both sides of the three-way pipe 1 are provided with output ports 2, the bottom of the three-way pipe 1 is provided with an input port 3, the inside of the three-way pipe 1 is fixedly connected with a sealing base 4, the top of the sealing base 4 is provided with a partition 5, the partition 5 is fixedly connected to the sealing base 4 and the three-way pipe 1, and both sides of the sealing base 4 are provided with through holes 6; the top of the through holes 6 is provided with a sealing block 7, the top of the sealing block 7 is fixedly connected with a sliding rod 8, the outer surface of the sliding rod 8 is slidably connected with a first screw rod 9, and the top of the sliding rod 8 is provided with a spring 10; the top of the spring 10 is provided with a rotating mechanism 11 for adjusting the hardness of the spring 10; the outer surface of the first screw rod 9 is provided with a linkage mechanism 12 for controlling the lifting and lowering thereof.

[0022] It should be noted that the user compresses or releases the spring 10 by rotating the mechanism 11 to control the hardness of the spring 10 inside the first screw 9, thereby achieving the purpose of controlling the closing force of the reversing valve. This solves the problem that the existing reversing valve does not have the function of adjusting the closing force, which causes the valve disc to be easily squeezed and deformed when the closing force of the reversing valve is too large, and the sealing performance of the reversing valve is poor when the closing force is too small, which is prone to water leakage and poor practicality.

[0023] In a further preferred embodiment of the present invention, Figure 2 , 3 As shown, the rotating mechanism 11 includes: an extrusion block 13 is provided on the top of the spring 10, and the top of the extrusion block 13 is fixedly connected to a second screw rod 14, and the second screw rod 14 is threadedly connected to the first screw rod 9 respectively; the top of the second screw rod 14 is fixedly connected to a knob 15.

[0024] In this embodiment, the user rotates the knob 15 , the knob 15 drives the second screw rod 14 , and the second screw rod 14 drives the extrusion block 13 , so that the extrusion block 13 extrudes or releases the spring 10 .

[0025] In a further preferred embodiment of the present invention, Figure 3 As shown, the linkage mechanism 12 includes: the outer surface of the first screw 9 is threadedly connected with an internal threaded sleeve 16, the internal threaded sleeve 16 is rotatably connected to the tee pipe 1, and the outer surface of the internal threaded sleeve 16 is fixedly connected with a first gear 17; the tee pipe 1 is fixedly connected with a bracket 18 near the first screw 9, the bracket 18 is fixedly connected with two sliders 19 near the first screw 9, and the first screw 9 is provided with a matching slide groove 20 near the slider 19; a power mechanism 21 for controlling the rotation of the internal threaded sleeve 16 is arranged between the two first gears 17.

[0026] In this embodiment, the first gear 17 rotates to drive the internal threaded sleeve 16, and the internal threaded sleeve 16 rotates to drive the first screw 9. The first screw 9 is lifted and lowered through the cooperation of the slide groove 20 and the slider 19. The first screw 9 is lifted and lowered while driving the slide rod 8, and the slide rod 8 drives the sealing block 7, thereby achieving the purpose of controlling the opening and closing of the reversing valve.

[0027] In a further preferred embodiment of the present invention, Figure 1 As shown, the power mechanism 21 includes: a second gear 22 is arranged between the two first gears 17, and the first gears 17 are meshed with the second gears 22; a rotating shaft 23 is fixedly connected to the center of the second gear 22, the bottom end of the rotating shaft 23 is rotatably connected to the three-way pipe 1, the top end of the rotating shaft 23 passes through the bracket 18 and extends to the motor 24, the rotating shaft 23 is fixedly connected to the output end of the motor 24, and the motor 24 is fixedly connected to the bracket 18.

[0028] In this embodiment, the motor 24 is started, the output end of the motor 24 drives the rotating shaft 23, the rotating shaft 23 drives the second gear 22, the second gear 22 drives the internal threaded sleeve 16, and the internal threaded sleeve 16 simultaneously drives the two first screws 9 to move in the opposite direction, thereby achieving the purpose of reversing.

[0029] In a further preferred embodiment of the present invention, Figure 4 As shown, both sides of the top of the slide rod 8 are fixedly connected to the limiting blocks 25, and the first screw rod 9 is provided with a limiting groove 26 near the limiting block 25, and the limiting block 25 is slidably connected to the limiting groove 26.

[0030] In this embodiment, the movement stroke of the slide rod 8 can be limited to prevent the slide rod 8 from being separated from the first screw rod 9.

[0031] In a further preferred embodiment of the present invention, Figure 1 As shown, sealing rings 27 are provided near the through holes 6 of the sealing base 4 , and the sealing rings 27 are fixedly connected to the sealing base 4 .

[0032] In this embodiment, the sealing effect of the closed side of the reversing valve is improved to avoid water leakage.

[0033] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0034] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0035] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0036] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A reversing valve with adjustable closing force, comprising: A three-way pipe (1), wherein both sides of the three-way pipe (1) are provided with output ports (2), the bottom of the three-way pipe (1) is provided with an input port (3), the interior of the three-way pipe (1) is fixedly connected with a sealing base (4), a partition (5) is provided on the top of the sealing base (4), the partition (5) is fixedly connected to the sealing base (4) and the three-way pipe (1), and both sides of the sealing base (4) are provided with through holes (6); The invention is characterized in that a sealing block (7) is provided at the top of each through hole (6), a sliding rod (8) is fixedly connected to the top of each sealing block (7), a first screw rod (9) is slidably connected to the outer surface of each sliding rod (8), and a spring (10) is provided at the top of each sliding rod (8); The top of each spring (10) is provided with a rotating mechanism (11) for adjusting the hardness of the spring (10); The outer surface of the first screw rod (9) is provided with a linkage mechanism (12) for controlling the lifting and lowering of the first screw rod (9).

2. A reversing valve with adjustable closing force as claimed in claim 1, characterized in that: The rotating mechanism (11) comprises: The top of each of the springs (10) is provided with an extrusion block (13), the top of each of the extrusion blocks (13) is fixedly connected with a second screw rod (14), and the second screw rod (14) is threadedly connected to the first screw rod (9) respectively; The top end of the second screw rod (14) is fixedly connected with a knob (15).

3. A reversing valve with adjustable closing force as claimed in claim 1, characterized in that: The linkage mechanism (12) comprises: The outer surface of the first screw rod (9) is threadedly connected to an internal thread sleeve (16), the internal thread sleeve (16) is rotatably connected to the three-way pipe (1), and the outer surface of the internal thread sleeve (16) is fixedly connected to a first gear (17); The three-way pipe (1) is fixedly connected with a bracket (18) near the first screw rod (9), and the bracket (18) is fixedly connected with two sliders (19) near the first screw rod (9), and the first screw rod (9) is provided with a matching slide groove (20) near the sliders (19); A power mechanism (21) for controlling the internal thread sleeve (16) to rotate is arranged between the two first gears (17).

4. A reversing valve with adjustable closing force as claimed in claim 3, characterized in that: The power mechanism (21) comprises: A second gear (22) is arranged between the two first gears (17), and the first gears (17) are meshed with the second gears (22); The center of the second gear (22) is fixedly connected to a rotating shaft (23); the bottom end of the rotating shaft (23) is rotatably connected to the three-way pipe (1); the top end of the rotating shaft (23) passes through the bracket (18) and extends to the motor (24); the rotating shaft (23) is fixedly connected to the output end of the motor (24); and the motor (24) is fixedly connected to the bracket (18).

5. A reversing valve with adjustable closing force as claimed in claim 1, characterized in that: Both sides of the top of the sliding rod (8) are fixedly connected to limit blocks (25), and the first screw rod (9) is provided with a limit groove (26) near the limit block (25), and the limit block (25) is slidably connected to the limit groove (26).

6. A reversing valve with adjustable closing force as claimed in claim 1, characterized in that: The sealing base (4) is provided with a sealing ring (27) near the through hole (6), and the sealing ring (27) is fixedly connected to the sealing base (4).

Images