Reversing valve

Abstract

The utility model relates to the technical field of valves, in particular to a reversing valve which comprises a valve body and a deflector rod body and further comprises a transverse groove formed in the top of the valve body and used for providing a movement interval for the deflector rod body, the deflector rod body is rotationally connected with the inner wall of the valve body, outlet pieces are arranged on the two sides of the valve body respectively, and the transverse groove is communicated with the transverse groove. An inlet piece is arranged at the bottom of the valve body; the inclined rods are connected to the two sides of the top of the valve body in a bolted mode, and the other ends of the inclined rods are connected with sliding sleeves in a bolted mode. The positioning column is driven to enter the positioning hole under the action of the compression spring, so that the deflector rod body is positioned, the condition of misoperation caused by random movement of the deflector rod body under external force is avoided, the safety of the reversing valve is improved, meanwhile, the vertical plate and the plugging plate are driven to move in the vertical direction by rotating the long bolt, and the safety of the reversing valve is improved. The effect of adjusting the flow of the reversing valve is achieved, the adjustability of the reversing valve is improved, and the application range of the reversing valve is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a reversing valve. 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 and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control. The valve is installed in the pipeline for conveying lubricating oil in the thin oil lubrication system. By switching different fluid channels, the channels of the valve body are connected or disconnected, thereby controlling the reversing and start and stop of the fluid.

[0003] Some current reversing valves achieve reversing action through an externally arranged lever. However, after the reversing is completed, the lever lacks fixing measures and is easily moved by external force, thereby causing malfunction and affecting work. In addition, the flow rate of the internal fluid cannot be adjusted, and the practicality is poor. Utility Model Content

[0004] The utility model aims to provide a reversing valve, which can not only position the lever to prevent misoperation, but also has a flow regulating function.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a reversing valve, including a valve body and a lever body, and also including:

[0006] A transverse groove is provided on the top of the valve body and is used to provide a movement range for the lever body, the lever body is rotatably connected to the inner wall of the valve body, both sides of the valve body are provided with outlet pieces, and the bottom of the valve body is provided with an inlet piece;

[0007] An inclined rod is bolted to both sides of the top of the valve body, the other end of the inclined rod is bolted to a sliding sleeve, and the inner wall of the sliding sleeve is slidably connected to a positioning column, a ring body is fixed to the surface of the positioning column, a compression spring is fixed to one side of the sliding sleeve, and the other end of the compression spring is fixed to the ring body;

[0008] A connecting block is rotatably connected to the other end of the positioning column, and a pull ring is bolted to the other side of the connecting block, so as to facilitate pulling the positioning column to move, and a positioning hole used in conjunction with the positioning column is opened on the surface of the lever body;

[0009] A connecting plate bolted to one side of the oblique rod, a clamping column bolted to one side of the connecting block, and a clamping groove for the clamping column to enter the surface of the connecting plate;

[0010] A regulating mechanism for regulating the flow at the outlet, wherein a vertical groove is formed through the surface of the outlet;

[0011] A reversing mechanism is used in conjunction with the shifting rod body to achieve reversing.

[0012] Preferably, the reversing mechanism includes an inner cylinder, a piston and a movable rod, the inner cylinder is fixed to the inner side of the valve body, an inner through groove is provided inside the inner cylinder, both ends of the inner through groove are respectively communicated with the outlet pieces on both sides, and the bottom end of the inner through groove is communicated with the inlet piece, the piston is slidably connected to the inner wall of the inner through groove, the movable rod is respectively bolted to the pistons on both sides, the reversing mechanism also includes a bending rod welded at the center of the surface of the movable rod, a sliding groove is also provided on the surface of the lever body, and the bending rod is slidably connected to the inner wall of the sliding groove.

[0013] Preferably, second sealing rings are fixed on both sides of the inner wall of the inner through groove, and the movable rod is slidably connected to the inner wall of the second sealing ring.

[0014] Preferably, the adjustment mechanism includes a long bolt, a vertical plate and a sealing plate, the vertical plate and the sealing plate are both slidably connected to the inner wall of the vertical groove, the bottom end of the long bolt is rotatably connected to the top of the outlet piece, and one side of the vertical plate is bolted with a threaded sleeve threadedly connected to the surface of the long bolt.

[0015] Preferably, a first sealing ring is fixed above the inner wall of the vertical groove, and the vertical plate is slidably connected to the inner wall of the first sealing ring.

[0016] Preferably, a knob is also fixed to the top end of the long bolt.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] The utility model uses the effect of compressing the spring to drive the positioning column to enter the interior of the positioning hole, thereby realizing the positioning of the lever body, avoiding the lever body from moving randomly when subjected to external force, thereby causing malfunction, thereby improving the safety of the reversing valve, and at the same time, by rotating the long bolt, driving the vertical plate and the blocking plate to move in the vertical direction, achieving the effect of regulating the flow of the reversing valve, thereby improving the adjustability and application range of the reversing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the inner cylinder in the utility model;

[0022] Figure 4 It is a schematic diagram of a local structure in the utility model;

[0023] Figure 5 For this utility model Figure 2A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 6 It is a cross-sectional view of the outlet member in the utility model;

[0025] Figure 7 It is a schematic diagram of the direction of the inner through groove in the utility model.

[0026] In the figure: 1. valve body; 2. transverse groove; 3. lever body; 4. inclined rod; 5. sliding sleeve; 6. positioning column; 7. ring body; 8. compression spring; 9. connecting block; 10. pull ring; 11. connecting plate; 12. clamping groove; 13. clamping column; 14. vertical groove; 15. outlet piece; 16. adjustment mechanism; 161. long bolt; 162. vertical plate; 163. blocking plate; 164. first sealing ring; 165. threaded sleeve; 166. knob; 17. positioning hole; 18. inlet piece; 19. reversing mechanism; 191. inner cylinder; 192. piston; 193. inner through groove; 194. movable rod; 195. second sealing ring; 196. bending rod; 197. sliding groove. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-7A reversing valve comprises a valve body 1 and a lever body 3. The reversing valve also comprises an adjusting mechanism 16 and a reversing mechanism 19. A transverse groove 2 is provided on the top of the valve body 1 for providing a movement range for the lever body 3. The lever body 3 is rotatably connected to the inner wall of the valve body 1. Outlet pieces 15 are provided on both sides of the valve body 1. An inlet piece 18 is provided on the bottom of the valve body 1. An inclined rod 4 is bolted on both sides of the top of the valve body 1. A sliding sleeve 5 is bolted on the other end of the inclined rod 4. A positioning column 6 is slidably connected to the inner wall of the sliding sleeve 5. A ring body 7 is fixed on the surface of the positioning column 6. A compression spring 8 is fixed on one side of the sliding sleeve 5. The other end of the compression spring 8 is fixed to the ring body 7. The other end of the positioning column 6 is rotatably connected to a connecting block 9. A pull ring 10 is bolted on the other side of the connecting block 9, so as to facilitate pulling the positioning column 6. To move, a positioning hole 17 is provided on the surface of the lever body 3. In order to make the other end of the positioning column 6 away from the movement trajectory of the lever body 3, the connecting block 9 and the positioning column 6 can be pulled by the pull ring 10, and the positioning column 6 can slide on the inner wall of the sliding sleeve 5, thereby driving the ring body 7 to move together and making the compression spring 8 in a compressed state. A connecting plate 11 is also bolted to one side of the inclined rod 4, and a clamping column 13 is also bolted to one side of the connecting block 9. A clamping groove 12 is also provided on the surface of the connecting plate 11. When the connecting block 9 is pulled to make the compression spring 8 in a compressed state, the clamping column 13 and the clamping groove 12 are located on the same horizontal line. Then the connecting block 9 is rotated to allow the clamping column 13 to enter the interior of the clamping groove 12, so as to restrict the connecting block 9 and the positioning column 6. A vertical groove 14 is provided on the surface of the outlet piece 15.

[0029] The reversing mechanism 19 includes an inner cylinder 191, a piston 192 and a movable rod 194. The inner cylinder 191 is fixed to the inner side of the valve body 1. An inner through groove 193 is provided inside the inner cylinder 191. The two ends of the inner through groove 193 are respectively communicated with the outlet pieces 15 on both sides, and the bottom end of the inner through groove 193 is communicated with the inlet piece 18. The piston 192 is slidably connected to the inner wall of the inner through groove 193. The movable rod 194 is bolted to the pistons 192 on both sides. The reversing mechanism 19 also includes a bending rod 196, and the bending rod 196 is connected to the inner wall of the inner through groove 193. The folding rod 196 is welded to the center of the surface of the movable rod 194. A sliding groove 197 is also provided on the surface of the lever body 3. The folding rod 196 is slidably connected to the inner wall of the sliding groove 197. Second sealing rings 195 are fixed on both sides of the inner wall of the inner groove 193. The movable rod 194 is slidably connected to the inner wall of the second sealing ring 195, which increases the sealing performance of the movable rod 194 during the back-and-forth movement. During the reversing process, the lever body 3 is pushed to tilt. The lever body 3 drives the sliding surface of the lever body 3 to tilt during the tilting process. The slot 197 moves, and the inner wall of the slide slot 197 is used to push the bending rod 196 to move. The bending rod 196 drives the movable rod 194 to move in the horizontal direction. The movable rod 194 drives the pistons 192 on both sides to move, which makes the pistons 192 align with the connection between the outlet piece 15 on one side and the inner slot 193 to implement blocking. The outlet piece 15 on this side is in a closed state, while the connection between the outlet piece 15 on the other side and the inner slot 193 is in an open state, which makes the outlet piece 15 on this side in an open state. And they are connected with the inlet piece 18 to achieve the effect of mutual conversion of the two groups of outlet pieces 15. At the same time, the positioning hole 17 on the surface of the lever body 3 is aligned with one group of positioning posts 6, and then the connecting block 9 corresponding to the positioning post 6 on this side is rotated to make the clamping post 13 disengage from the clamping groove 12. Then, under the reaction force of the compression spring 8, the ring body 7 drives the positioning post 6 to move, so that the positioning post 6 enters the positioning hole 17, thereby realizing the positioning of the lever body 3 and preventing the lever body 3 from being randomly moved by external force and causing malfunction.

[0030] The adjusting mechanism 16 comprises a long bolt 161, a vertical plate 162 and a blocking plate 163. The vertical plate 162 and the blocking plate 163 are both slidably connected to the inner wall of the vertical groove 14. The bottom end of the long bolt 161 is rotatably connected to the top of the outlet member 15. A threaded sleeve 165 threadedly connected to the surface of the long bolt 161 is bolted to one side of the vertical plate 162. The long bolt 161 is rotated to make the threaded sleeve 165 move under the action of the thread. The threaded sleeve 165 drives the vertical plate 162 and the blocking plate 163 to move in the vertical direction. The more the blocking plate 163 is lowered, the lower the screw thread 165 is. The more the outlet piece 15 is blocked, the effect of reducing the flow rate is achieved. Conversely, the vertical plate 162 and the blocking plate 163 rise, and the blocking plate 163 blocks the outlet piece 15 less, achieving the effect of increasing the flow rate and adjusting the flow rate. A first sealing ring 164 is also fixed above the inner wall of the vertical groove 14, and the vertical plate 162 is slidably connected to the inner wall of the first sealing ring 164 to increase the sealing between the vertical plate 162 and the vertical groove 14. A knob 166 is also fixed to the top of the long bolt 161 to facilitate the rotation of the long bolt 161.

[0031] 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 reversing valve, comprising a valve body (1) and a lever body (3), characterized in that: Also includes: A transverse groove (2) is provided on the top of the valve body (1) and is used to provide a movement range for the lever body (3); the lever body (3) is rotatably connected to the inner wall of the valve body (1); outlet pieces (15) are provided on both sides of the valve body (1); and an inlet piece (18) is provided at the bottom of the valve body (1); An inclined rod (4) is bolted to both sides of the top of the valve body (1), the other end of the inclined rod (4) is bolted to a sliding sleeve (5), and the inner wall of the sliding sleeve (5) is slidably connected to a positioning column (6), a ring body (7) is fixed to the surface of the positioning column (6), a compression spring (8) is fixed to one side of the sliding sleeve (5), and the other end of the compression spring (8) is fixed to the ring body (7); A connecting block (9) is rotatably connected to the other end of the positioning column (6), and a pull ring (10) is bolted to the other side of the connecting block (9), so as to facilitate pulling the positioning column (6) to move, and a positioning hole (17) is provided on the surface of the lever body (3) for use with the positioning column (6); A connecting plate (11) is bolted to one side of the oblique rod (4), a clamping column (13) is bolted to one side of the connecting block (9), and a clamping groove (12) for the clamping column (13) to enter is formed on the surface of the connecting plate (11); An adjusting mechanism (16) for adjusting the flow rate at the outlet piece (15), wherein a vertical groove (14) is formed through the surface of the outlet piece (15); A reversing mechanism (19) is used in conjunction with the shifting lever body (3) to achieve reversing.

2. A reversing valve according to claim 1, characterized in that: The reversing mechanism (19) comprises an inner cylinder (191), a piston (192) and a movable rod (194); the inner cylinder (191) is fixed on the inner side of the valve body (1); an inner through groove (193) is provided inside the inner cylinder (191); two ends of the inner through groove (193) are respectively communicated with the outlet pieces (15) on both sides, and the bottom end of the inner through groove (193) is communicated with the inlet piece (18); the piston (192) is slidably connected to the inner wall of the inner through groove (193); the movable rod (194) is bolted to the pistons (192) on both sides; the reversing mechanism (19) further comprises a bending rod (196) welded at the center of the surface of the movable rod (194); a sliding groove (197) is further provided on the surface of the lever body (3), and the bending rod (196) is slidably connected to the inner wall of the sliding groove (197).

3. A reversing valve according to claim 2, characterized in that: Second sealing rings (195) are fixed on both sides of the inner wall of the inner through groove (193), and the movable rod (194) is slidably connected to the inner wall of the second sealing ring (195).

4. A reversing valve according to claim 1, characterized in that: The adjustment mechanism (16) comprises a long bolt (161), a vertical plate (162) and a blocking plate (163); the vertical plate (162) and the blocking plate (163) are both slidably connected to the inner wall of the vertical groove (14); the bottom end of the long bolt (161) is rotatably connected to the top of the outlet member (15); and a threaded sleeve (165) threadedly connected to the surface of the long bolt (161) is bolted to one side of the vertical plate (162).

5. A reversing valve according to claim 4, characterized in that: A first sealing ring (164) is also fixed above the inner wall of the vertical groove (14), and the vertical plate (162) is slidably connected to the inner wall of the first sealing ring (164).

6. A reversing valve according to claim 4, characterized in that: A knob (166) is also fixed to the top end of the long bolt (161).

Images