Novel manual proportional multi-way reversing valve

Abstract

The utility model provides a novel manual proportional multi-way reversing valve, which comprises a valve body, a connecting piece and a valve upper cover, two groups of passages are arranged on the valve body, an inner core, a gas distribution disc and a gas distribution disc pad are arranged in the connecting piece, the valve upper cover is arranged at the upper end of the connecting piece, a manual rotating handle is arranged on the side edge of the valve upper cover, and the manual rotating handle is connected with the valve upper cover. A through hole is formed in the center of the valve upper cover, a locking screw is arranged in the through hole, the bottom of the locking screw is in threaded connection with the top of the inner core, a rotating device is arranged at the bottom of the valve body, and the reversing valve can rotate after being installed on equipment through the rotating device. When the direction of the reversing valve needs to be adjusted, the elastic force of the locking spring is overcome through external force, the side ball rolls in the sliding groove, then the valve body is rotated, the reversing valve is adjusted to the needed direction, the external force is released, the side ball is clamped in the sliding groove under the action of the locking spring, locking of the rotating device is achieved, and installation and use are convenient.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a novel manual proportional multi-way directional valve. Background Technology

[0002] A directional control valve is a directional control valve with two or more flow patterns and two or more oil ports. It is a valve that realizes the communication, cut-off and reversal 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.

[0003] Existing Chinese patent document CN202022403188.8 discloses a manual directional control valve, including a directional control valve body, a steering wheel fixedly connected to the top of the directional control valve body, and a main limiting cavity provided at one end of the front of the steering wheel. In use, the user holds the main operating handle and the secondary operating handle and pulls them to move them within the positioning cavity. When the main and secondary operating handles are completely disengaged from the positioning cavity during movement, and the auxiliary drive shaft overlaps one end of the main steering port and the secondary steering port, the user then rotates the main and secondary operating handles 90° in opposite directions around the auxiliary drive shaft, causing the opposite sides of the main and secondary operating handles to overlap the front of the directional control valve body and be attracted by the main and secondary magnetic blocks.

[0004] However, the above-mentioned patent has certain defects in use. The reversing valve can only be fixed on the equipment in one direction. When the position needs to be adjusted during use, it needs to be disassembled and re-fixed. It cannot be flexibly adjusted and is quite inconvenient.

[0005] To address these issues, a novel manual proportional multi-way directional valve is proposed. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology and solve the problem that the direction of traditional multi-way directional valves is usually fixed after installation on the equipment, and it is not convenient to adjust the direction of the directional valve when the layout of the equipment or the working requirements change, this utility model provides a new type of manual proportional multi-way directional valve.

[0007] This utility model is achieved using the following technical solution:

[0008] A novel manual proportional multi-way directional valve includes a valve body, a connector, and a valve cover. The valve body has two sets of passages. The connector has an inner core, a distribution plate, and a distribution plate gasket inside. The inner core, the distribution plate, and the distribution plate gasket are assembled inside the connector from top to bottom. The connector and the valve body are fixedly connected by screws.

[0009] The upper end of the connector is provided with a valve cover, and the side of the valve cover is provided with a manual handle. The manual handle is threadedly connected to the valve cover. The center of the valve cover is provided with a through hole, and a locking screw is provided in the through hole. The bottom of the locking screw is threadedly connected to the top of the inner core to connect the valve cover to the connector. The upper surface of the connector is provided with multiple limiting holes. The inside of the valve cover is symmetrically provided with steel ball compression springs, and the lower end of the steel ball compression springs is provided with limiting steel balls.

[0010] The bottom of the valve body is provided with a rotating device, which allows the reversing valve to be rotated after it is installed on the equipment.

[0011] The rotating device includes a rotating seat and a rotating shaft. The rotating shaft is fixed on the rotating seat. A cavity for mounting the rotating shaft is provided at the center of the lower surface of the valve body. The rotating device is inserted into the valve body. A top ball bearing is provided at the top of the rotating shaft.

[0012] The side wall of the rotating shaft is provided with multiple cavities, which are evenly and equidistantly arranged around the axis of the rotating shaft. A locking spring is provided inside the cavity, and a side ball is provided at the top of the locking spring. The side ball extends to the outside of the rotating shaft.

[0013] The valve body has a matching sliding groove on the inner wall of the cavity for mounting the rotating shaft.

[0014] The outer peripheral wall of the inner core and the outer peripheral wall of the top of the valve body are respectively provided with sealing rings.

[0015] The valve body is provided with multiple fastening holes, which are arranged around the valve body. The rotating seat is provided with four mounting holes, which are arranged around the rotating seat.

[0016] The present invention has the following advantages over the prior art:

[0017] 1. By setting a rotating device at the bottom of the valve body, when it is necessary to adjust the direction of the reversing valve, the external force overcomes the elastic force of the locking spring, causing the side ball to roll in the slide groove. After rotating the valve body and adjusting the reversing valve to the required direction, the external force is released, and the side ball is locked in the slide groove under the action of the locking spring, realizing the locking of the rotating device. It has the feature of being rotatable, which is convenient for installation and use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is an exploded three-dimensional structural diagram of this utility model;

[0020] Figure 3 This is a schematic diagram of the front structure of this utility model;

[0021] Figure 4 This is a utility model Figure 3 Schematic diagram of the cross-sectional structure along the BB direction;

[0022] Figure 5 This is a schematic diagram of the rotating device structure of this utility model;

[0023] In the diagram: 1. Rotating device; 11. Rotating seat; 12. Mounting hole; 13. Rotating shaft; 14. Top ball bearing; 15. Cavity; 16. Side ball bearing; 17. Locking spring; 2. Valve cover; 21. Locking screw; 22. Manual handle; 3. Connecting piece; 31. Stop shaft; 4. Steel ball compression spring; 41. Limiting steel ball; 5. Sealing ring; 6. Inner core; 7. Air distribution plate; 8. Air distribution plate gasket; 9. Valve body. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 5 As shown, a novel manual proportional multi-way directional valve includes a valve body 9, a connector 3, and a valve cover 2. The valve body 9 has two sets of passages, which serve as the main structure of the directional valve and provide channels for the flow of hydraulic oil. The two sets of passages are used to realize the inlet and outlet and flow direction control of hydraulic oil, and are the key parts of liquid transmission and distribution in the hydraulic system. The connector 3 has an inner core 6, a valve plate 7, and a valve plate gasket 8 inside. The inner core 6, valve plate 7, and valve plate gasket 8 are assembled in sequence from top to bottom inside the connector 3. This assembly method makes the connection between the components tight, which is convenient for installation and maintenance. The connector 3 provides installation space for the inner core 6, valve plate 7, and valve plate gasket 8, ensuring the relative position and matching accuracy between these components and ensuring the normal operation of the directional valve. The connector 3 and the valve body 9 are fixedly connected by screws. The tightening method of the screws ensures the stability between the connector 3 and the valve body 9.

[0027] The upper end of the connector 3 is provided with a valve cover 2, and the side of the valve cover 2 is provided with a manual handle 22. The manual handle 22 is threadedly connected to the valve cover 2. The manual handle 22 is detachable, which facilitates the operator to operate the reversing valve. The valve cover 2 has a through hole in its center, and a locking screw 21 is provided in the through hole. The bottom of the locking screw 21 is threadedly connected to the top of the inner core 6, connecting the valve cover 2 to the connector 3. This connection method makes the valve cover 2 and the connector 3 firmly connected, and also facilitates disassembly and maintenance. The upper surface of the connector 3 is provided with multiple limiting holes. The valve cover 2 is symmetrically provided with steel ball compression springs 4 inside. The lower end of the steel ball compression springs 4 is provided with limiting steel balls 41. The limiting steel balls 41 cooperate with the limiting holes to prevent the valve cover 2 from rotating during operation and ensure the accuracy of operation. When the valve cover 2 is connected to the inner core 6 by the locking screw 21, the operator will operate it by using the manual handle 22 on the valve cover 2. The force will be transmitted to the inner core 6, which will then drive the position of the valve plate 7 and the valve plate pad 8 to change, thereby realizing the reversal of hydraulic oil and the regulation of flow.

[0028] The bottom of the valve body 9 is provided with a rotating device 1, which allows the reversing valve to be rotated after it is installed on the equipment, thereby improving the installation flexibility and applicability of the reversing valve.

[0029] The rotating device 1 includes a rotating seat 11 and a rotating shaft 13. The rotating shaft 13 is fixed on the rotating seat 11. The center of the lower surface of the valve body 9 is provided with a cavity for mounting the rotating shaft 13. The rotating device 1 is inserted into the valve body 9. The top of the rotating shaft 13 is provided with a top ball bearing 14. The top ball bearing 14 can reduce the friction between the rotating shaft 13 and the valve body 9, making the rotating device 1 rotate more smoothly.

[0030] The side wall of the rotating shaft 13 is provided with a plurality of cavities 15. The cavities 15 are arranged evenly and equidistantly around the axis of the rotating shaft 13. A locking spring 17 is provided inside the cavity 15. The top of the locking spring 17 is provided with a side ball 16. The side ball 16 extends to the outside of the rotating shaft 13.

[0031] The inner wall of the cavity on the valve body 9 where the rotating shaft 13 is installed is provided with a matching slide groove. When it is necessary to fix the position of the rotating device 1, the side ball 16 is locked into the slide groove under the action of the locking spring 17, thereby locking the rotating device 1. When it is necessary to rotate the rotating device 1, the side ball 16 is rolled in the slide groove by overcoming the elastic force of the locking spring 17 through external force, thereby rotating the rotating device 1.

[0032] The outer peripheral wall of the inner core 6 and the outer peripheral wall of the top of the valve body 9 are respectively provided with sealing rings 5. The sealing rings 5 ​​can improve the sealing performance of the reversing valve and prevent internal medium leakage.

[0033] The valve body 9 is provided with a plurality of fastening holes, which are arranged around the valve body 9. The rotating seat 11 is provided with four mounting holes 12, which are arranged around the rotating seat 11.

[0034] The working principle of this utility model is as follows: When in use, the operator rotates the manual handle 22. Since the manual handle 22 is threadedly connected to the valve cover 2, the valve cover 2 will rotate accordingly. However, due to the cooperation between the limiting steel ball 41 and the limiting hole, the valve cover 2 will not rotate relative to the connecting part 3, but will transmit the force to the inner core 6.

[0035] The inner core 6 cooperates with the corresponding structures on the valve plate 7 and valve plate pad 8 to change the passage of hydraulic oil in the valve body 9. As the inner core 6 rotates at different angles, the cross-sectional area of ​​the passage through which the hydraulic oil passes will also change, thereby achieving the regulation of the hydraulic oil flow. The operator can precisely control the action speed and force of the hydraulic actuator by rotating the manual handle 22 according to actual needs.

[0036] When the direction of the reversing valve needs to be adjusted, the operator applies external force to overcome the elastic force of the locking spring 17, causing the side ball 16 to roll in the slide groove, and rotates the valve body 9 to adjust the reversing valve to the required direction.

[0037] When the external force is released, the side ball bearing 16 is locked in the slide groove again under the action of the locking spring 17, thereby locking the rotating device 1 and ensuring that the reversing valve can work stably after the direction is adjusted.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A novel manual proportional multi-way directional valve, comprising a valve body, a connector, and a valve cover, wherein the valve body has two sets of passages, characterized in that, The connector has an inner core, a distribution plate, and a distribution plate gasket inside. The inner core, the distribution plate, and the distribution plate gasket are assembled inside the connector from top to bottom. The connector is fixedly connected to the valve body by screws. The upper end of the connector is provided with a valve cover, and the side of the valve cover is provided with a manual handle. The manual handle is threadedly connected to the valve cover. The center of the valve cover is provided with a through hole, and a locking screw is provided in the through hole. The bottom of the locking screw is threadedly connected to the top of the inner core to connect the valve cover to the connector. The upper surface of the connector is provided with multiple limiting holes. The inside of the valve cover is symmetrically provided with steel ball compression springs, and the lower end of the steel ball compression springs is provided with limiting steel balls. The bottom of the valve body is provided with a rotating device, which allows the reversing valve to be rotated after it is installed on the equipment.

2. The novel manual proportional multi-way directional valve according to claim 1, characterized in that: The rotating device includes a rotating seat and a rotating shaft. The rotating shaft is fixed on the rotating seat. A cavity for mounting the rotating shaft is provided at the center of the lower surface of the valve body. The rotating device is inserted into the valve body. A top ball bearing is provided at the top of the rotating shaft.

3. A novel manual proportional multi-way directional valve according to claim 2, characterized in that: The side wall of the rotating shaft is provided with multiple cavities, which are evenly and equidistantly arranged around the axis of the rotating shaft. A locking spring is provided inside the cavity, and a side ball is provided at the top of the locking spring. The side ball extends to the outside of the rotating shaft. The valve body has a matching sliding groove on the inner wall of the cavity for mounting the rotating shaft.

4. A novel manual proportional multi-way directional valve according to claim 1, characterized in that: The outer peripheral wall of the inner core and the outer peripheral wall of the top of the valve body are respectively provided with sealing rings.

5. A novel manual proportional multi-way directional valve according to claim 2, characterized in that: The valve body is provided with multiple fastening holes, which are arranged around the valve body. The rotating seat is provided with four mounting holes, which are arranged around the rotating seat.

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