Multi-way reversing valve for hydraulic pump

Abstract

The utility model discloses a multi-way reversing valve for a hydraulic pump, and relates to the technical field of reversing valves, the multi-way reversing valve comprises a reversing valve, the reversing valve comprises a valve body, the top of the valve body is fixedly connected with the hydraulic pump through a bolt, and a first water outlet pipe, a second water outlet pipe and a third water outlet pipe are sequentially arranged on the surface of the valve body from top to bottom. The axis of the third water outlet pipe is staggered with the axis of the first water outlet pipe and the axis of the second water outlet pipe, a fixing frame is connected to the interior of the first water outlet pipe, and a plurality of drainage holes are formed in the surface of the fixing frame. According to the scheme, the hydraulic cylinder drives the valve element to move up and down, firstly, the iron sheet is attracted through the magnet, so that the iron sheet is separated from the groove, liquid can flow out of the first water outlet pipe, the valve element of the reversing valve is simple in adjusting mode, the valve element can be directly taken out when needing to be maintained or replaced, convenience is brought to workers, and the working efficiency is improved. And the situation of leakage of the reversing valve is not prone to occurring through the multiple sealing gaskets.

Description

Technical Field

[0001] The utility model relates to the technical field of reversing valves, in particular to a multi-way reversing valve for a hydraulic pump. Background Art

[0002] A reversing valve is a directional control valve with two or more flow forms and two or more 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. The reversing valve often needs to be connected to a hydraulic pump for use, so that the two can make the liquid flow in different directions.

[0003] Hydraulic pumps often need to carry liquid to places in different directions. At this time, a multi-way reversing valve is used. The current multi-way reversing valve has a relatively complicated way of adjusting the valve core position during use. If a failure occurs, it will cause inconvenience to the staff for maintenance, and the sealing effect is poor, which is prone to leakage. Therefore, a multi-way reversing valve for a hydraulic pump is provided to solve the above problems. Utility Model Content

[0004] In order to solve the above technical problems, a multi-way reversing valve for a hydraulic pump is provided. The technical solution solves the problem mentioned in the above background technology that the current reversing valve has a relatively complicated way of adjusting the valve core position during use. If a fault occurs, it will cause inconvenience to the staff for maintenance, and the sealing effect is poor, which is prone to leakage.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows: a multi-way reversing valve for a hydraulic pump, comprising a reversing valve, the reversing valve comprising a valve body, the top of the valve body is fixedly connected to the hydraulic pump by bolts, the surface of the valve body is sequentially provided with a first water outlet pipe, a second water outlet pipe and a third water outlet pipe from top to bottom, the axis of the third water outlet pipe is staggered with the axis of the first water outlet pipe and the second water outlet pipe, the interior of the first water outlet pipe is connected with a fixing frame, the surface of the fixing frame is provided with a plurality of drainage holes, the interior of the fixing frame is slidably connected with a guide rod, the surface of the guide rod is sleeved with a first elastic Spring, an iron sheet is provided at the left end of the guide rod, the first spring is located between the fixing frame and the iron sheet, a first sealing gasket is provided on the right side of the iron sheet, the interior of the second water outlet pipe is connected with a rotating shaft, the surface of the rotating shaft is sleeved with a torsion spring and is fixedly connected with a notch disk, a second sealing gasket is provided on the surface of the notch disk, a slide groove is provided at the internal connection between the third water outlet pipe and the valve body, the internal connection of the slide groove is connected with a limiting rod, a fixed plate is connected at the lower position of the interior of the valve body, a hydraulic cylinder is installed at the bottom of the fixed plate, and the output end of the hydraulic cylinder passes through the bottom of the fixed plate and is fixedly connected to the valve core.

[0006] Optionally, the first spring is located between the fixing frame and the iron sheet, and a first sealing gasket is provided on the right side of the iron sheet.

[0007] Optionally, a groove is provided on the inner surface of the valve body, the groove is arranged corresponding to the first water outlet pipe, and the groove is plugged into the iron sheet.

[0008] Optionally, a hook is connected to the surface with a larger diameter of the notched disk, and a matching groove is provided on the lower side of the internal connection between the second water outlet pipe and the valve body.

[0009] Optionally, the limiting rod is vertically arranged, a movable plate is slidably connected to the surface of the limiting rod, and a second spring is sleeved on the surface of the limiting rod.

[0010] Optionally, the second spring is located below the movable plate, a first rectangular block is connected to the lower left side of the movable plate, a third sealing gasket is arranged on the top of the movable plate, and the movable plate is slidably connected to the slide groove.

[0011] Optionally, a magnet, a barb and a second rectangular block are sequentially arranged on the surface of the valve core from bottom to top, and the barb is arranged opposite to the magnet.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In this solution, the hydraulic cylinder drives the valve core to move up and down. First, the iron sheet is adsorbed by the magnet, so that the iron sheet is separated from the groove, and the liquid can flow out from the first outlet pipe;

[0014] The hydraulic cylinder continues to drive the valve core to move downward. At this time, the magnet is separated from the iron sheet, and the iron sheet is reset under the action of the first spring, thereby closing the first water outlet pipe. At the same time, the barb is fitted with the hook, and the valve core drives the barb to move downward, and then the notch disk is rotated through the hook, so that a gap is formed between the notch of the notch disk and the inner wall of the second water outlet pipe, and the liquid can flow out through the second water outlet pipe through the gap;

[0015] The hydraulic cylinder continues to drive the valve core to move downward, at which time the hook overlaps with the matching groove, and the barb can continue to move downward. Then the notch disk is reset under the action of the torsion spring, thereby closing the second water outlet pipe. At the same time, the second rectangular block and the first rectangular block drive the moving plate to move downward, and the liquid flows out from the third water outlet pipe. Finally, the hydraulic cylinder drives the valve core to move upward, and the moving plate is reset under the action of the second spring, closing the third water outlet pipe.

[0016] In summary, the adjustment method of the valve core of the reversing valve is simple. When the valve core needs to be repaired or replaced, it can be directly taken out, which brings convenience to the staff. In addition, the reversing valve is not prone to leakage through multiple sealing gaskets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of the valve core in the utility model;

[0021] Figure 5 for Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0022] Figure 6 for Figure 3 A partial enlarged schematic diagram of point D in the middle;

[0023] Figure 7 It is a right side view of the utility model;

[0024] Figure 8 for Figure 7 Cross-sectional view of the middle BB;

[0025] Fig. 9 for Figure 8 A partial enlarged schematic diagram of point E in the middle.

[0026] Description of reference numerals:

[0027] 1. reversing valve; 11. valve body; 12. first water outlet pipe; 13. second water outlet pipe; 14. third water outlet pipe; 15. fixing frame; 16. drainage hole; 17. guide rod; 18. first spring; 19. iron sheet; 110. first sealing gasket; 111. groove; 112. rotating shaft; 113. torsion spring; 114. notched plate; 115. second sealing gasket; 116. hook; 117. matching groove; 118. slide groove; 119. limit rod; 120. second spring; 121. moving plate; 122. first rectangular block; 123. third sealing gasket;

[0028] 2. Fixed plate; 21. Hydraulic cylinder; 22. Valve core; 23. Magnet; 24. Barb; 25. Second rectangular block;

[0029] 3. Hydraulic pump. DETAILED DESCRIPTION

[0030] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0031] Reference Figure 1-5 As shown, a multi-way reversing valve for a hydraulic pump comprises a reversing valve 1, which comprises a valve body 11. A fixed plate 2 is connected to the lower part of the interior of the valve body 11. A hydraulic cylinder 21 is installed at the bottom of the fixed plate 2. The output end of the hydraulic cylinder 21 passes through the bottom of the fixed plate 2 and is fixedly connected to a valve core 22. A magnet 23, a barb 24 and a second rectangular block 25 are sequentially arranged on the surface of the valve core 22 from bottom to top. The barb 24 is arranged opposite to the magnet 23. When the hydraulic cylinder 21 is started, the output end of the hydraulic cylinder 21 drives the valve core 22 to move up and down. The top of the valve body 11 is fixedly connected to the hydraulic pump 3 by bolts. A first water outlet pipe 12, a second water outlet pipe 13 and a third water outlet pipe 14 are sequentially arranged on the surface of the valve body 11 from top to bottom. The axis of the third water outlet pipe 14 is staggered with the axis of the first water outlet pipe 12 and the second water outlet pipe 13. A fixing frame 15 is connected to the interior of the first water outlet pipe 12. The surface of the fixing frame 15 A plurality of drainage holes 16 are provided, and a guide rod 17 is slidably connected inside the fixing frame 15. A first spring 18 is sleeved on the surface of the guide rod 17. An iron sheet 19 is provided at the left end of the guide rod 17. The first spring 18 is located between the fixing frame 15 and the iron sheet 19. A first sealing gasket 110 is provided on the right side of the iron sheet 19. A groove 111 is provided on the inner surface of the valve body 11. The groove 111 is correspondingly arranged with the first water outlet pipe 12. The groove 111 is plugged with the iron sheet 19. The hydraulic cylinder 21 drives the valve core 22 to move downward. First, the magnet 23 adsorbs the iron sheet 19, thereby separating the iron sheet 19 from the groove 111, and the liquid can flow out from the first water outlet pipe 12. When the first water outlet pipe 12 needs to be closed, the hydraulic cylinder 21 is continued to be started to drive the valve core 22 to move downward. At this time, the magnet 23 is separated from the iron sheet 19, and the iron sheet 19 is reset under the action of the first spring 18, thereby closing the first water outlet pipe 12.

[0032] Further, such as Figure 6 As shown, the interior of the second water outlet pipe 13 is connected with a rotating shaft 112, the surface of the rotating shaft 112 is sleeved with a torsion spring 113, and is fixedly connected with a notch disk 114, the surface of the notch disk 114 is provided with a second sealing gasket 115, and the surface with a larger diameter of the notch disk 114 is connected with a hook 116, and a matching groove 117 is provided on the lower side of the internal connection between the second water outlet pipe 13 and the valve body 11, and the hydraulic cylinder 21 continues to drive the valve core 22 to move downward, so that the barb 24 fits with the hook 116, and the valve core 22 drives the barb 24 to fit with the hook 116. The hook 24 moves downward, and then the notched disk 114 is rotated through the hook 116, so that a gap is formed between the notch of the notched disk 114 and the inner wall of the second water outlet pipe 13, and the liquid can flow out through the second water outlet pipe 13 through the gap. When it needs to be closed, the hydraulic cylinder 21 continues to drive the valve core 22 to move downward. At this time, the hook 116 coincides with the matching groove 117, and the barb 24 can continue to move downward. Then the notched disk 114 is reset under the action of the torsion spring 113, thereby closing the second water outlet pipe 13.

[0033] Further, such as Figure 7-9 As shown, a chute 118 is provided at the internal connection between the third water outlet pipe 14 and the valve body 11, and a limit rod 119 is connected to the inside of the chute 118. The limit rod 119 is vertically arranged, and a movable plate 121 is slidably connected to the surface of the limit rod 119. A second spring 120 is sleeved on the surface of the limit rod 119, and the second spring 120 is located below the movable plate 121. A first rectangular block 122 is connected to the lower left side of the movable plate 121, and a third sealing gasket 123 is arranged on the top of the movable plate 121. The movable plate 121 is slidably connected to the chute 118, and the hydraulic cylinder 21 continues to drive the valve The core 22 moves downward, so that the second rectangular block 25 and the first rectangular block 122 drive the movable plate 121 to move downward, and the liquid flows out from the third water outlet pipe 14. When the third water outlet pipe 14 needs to be closed, the hydraulic cylinder 21 drives the valve core 22 to move upward, and then the movable plate 121 is reset under the action of the second spring 120, thereby closing the third water outlet pipe 14. In summary, the adjustment method of the valve core 22 of the reversing valve 1 is simple. When the valve core 22 needs to be repaired or replaced, it can be directly taken out, which brings convenience to the staff, and the reversing valve 1 is not prone to leakage through multiple sealing gaskets.

[0034] The mechanical principle of the utility model is as follows: when the liquid needs to flow out from the first outlet pipe 12, the hydraulic cylinder 21 is started, and the output end of the hydraulic cylinder 21 drives the valve core 22 to move downward, so that the magnet 23 adsorbs the iron sheet 19, thereby separating the iron sheet 19 from the groove 111, and the liquid can flow out from the first outlet pipe 12; but when the liquid needs to flow out from the second outlet pipe 13, the hydraulic cylinder 21 is continued to be started to drive the valve core 22 to move downward, so that the barb 24 fits with the hook 116, and the valve core 22 drives the barb 24 to move downward , and then the notched disk 114 is rotated through the hook 116, so that a gap is formed between the notch of the notched disk 114 and the inner wall of the second water outlet pipe 13, and the liquid can flow out through the second water outlet pipe 13 through the gap; when it is necessary to flow out from the third water outlet pipe 14, the hydraulic cylinder 21 is continued to be started to drive the valve core 22 to move downward, so that the second rectangular block 25 and the first rectangular block 122 drive the movable plate 121 to move downward, and the liquid flows out from the third water outlet pipe 14. Combined with the above, the purpose of switching the flow direction of the liquid is achieved.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-way reversing valve for a hydraulic pump, characterized in that: The reversing valve (1) comprises a valve body (11), the top of the valve body (11) is fixedly connected to a hydraulic pump (3) by bolts, a first water outlet pipe (12), a second water outlet pipe (13) and a third water outlet pipe (14) are arranged on the surface of the valve body (11) from top to bottom, the axis of the third water outlet pipe (14) is arranged alternately with the axis of the first water outlet pipe (12) and the second water outlet pipe (13), the interior of the first water outlet pipe (12) is connected to a fixing frame (15), the surface of the fixing frame (15) is provided with a plurality of drainage holes (16), the interior of the fixing frame (15) is slidably connected to a guide rod (17), the surface of the guide rod (17) is sleeved with a first spring (18), the left end of the guide rod (17) is provided with an iron sheet (19), the first spring (18) is positioned A first sealing gasket (110) is arranged between the fixing frame (15) and the iron sheet (19) on the right side of the iron sheet (19); a rotating shaft (112) is connected to the inside of the second water outlet pipe (13); a torsion spring (113) is sleeved on the surface of the rotating shaft (112) and a notch disk (114) is fixedly connected thereto; a second sealing gasket (115) is arranged on the surface of the notch disk (114); a sliding groove (118) is provided at the internal connection between the third water outlet pipe (14) and the valve body (11); a limit rod (119) is connected to the inside of the sliding groove (118); a fixing plate (2) is connected to the lower part of the inside of the valve body (11); a hydraulic cylinder (21) is installed at the bottom of the fixing plate (2); an output end of the hydraulic cylinder (21) passes through the bottom of the fixing plate (2) and is fixedly connected to the valve core (22).

2. A multi-way reversing valve for a hydraulic pump according to claim 1, characterized in that: The inner surface of the valve body (11) is provided with a groove (111), the groove (111) is arranged corresponding to the first water outlet pipe (12), and the groove (111) is plugged into the iron sheet (19).

3. A multi-way reversing valve for a hydraulic pump according to claim 1, characterized in that: A hook (116) is connected to the surface with a larger diameter of the notched disk (114), and a matching groove (117) is provided on the lower side of the internal connection between the second water outlet pipe (13) and the valve body (11).

4. A multi-way reversing valve for a hydraulic pump according to claim 1, characterized in that: The limiting rod (119) is arranged vertically, the surface of the limiting rod (119) is slidably connected to a moving plate (121), and the surface of the limiting rod (119) is sleeved with a second spring (120).

5. A multi-way reversing valve for a hydraulic pump according to claim 4, characterized in that: The second spring (120) is located below the moving plate (121); a first rectangular block (122) is connected to the lower left side of the moving plate (121); a third sealing gasket (123) is provided on the top of the moving plate (121); and the moving plate (121) is slidably connected to the slide groove (118).

6. A multi-way reversing valve for a hydraulic pump according to claim 1, characterized in that: The surface of the valve core (22) is provided with a magnet (23), a barb (24) and a second rectangular block (25) in sequence from bottom to top, and the barb (24) is arranged opposite to the magnet (23).

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