Cartridge-type multi-way valve

Abstract

The utility model provides a kind of piece type multiway valve, comprising: oil inlet associated valve piece;Tail associated valve piece, it is spaced apart with the oil inlet associated valve piece;At least one working associated valve piece, the at least one working associated valve piece is arranged between the oil inlet associated valve piece and the tail associated valve piece;And at least one pull rod, the tail associated valve piece, the at least one working associated valve piece and the oil inlet associated valve piece are equipped with pull rod hole, the at least one pull rod is pulled together via the pull rod hole of each the valve piece the tail associated valve piece, the at least one working associated valve piece and the oil inlet associated valve piece, wherein, one valve piece in the tail associated valve piece, the at least one working associated valve piece and the oil inlet associated valve piece is equipped with at least one oil suction hole in the side surface facing another valve piece, and oil suction core is equipped in each the oil suction hole, and the at least one oil suction hole of the one valve piece is set to be adjacent to the pull rod hole of the one valve piece.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve technology, and more specifically to a plate-type multi-way valve. Background Technology

[0002] Hydraulic multi-way valves are core control components of construction machinery. They are available in two main structures: integral multi-way valves and disc multi-way valves. Integral multi-way valves have a complex structure and are more difficult to manufacture. Disc multi-way valves, on the other hand, are characterized by their compact structure, ease of manufacturing, and flexible assembly options, making them widely used in mobile machinery.

[0003] A plate-type multi-way valve typically includes an inlet valve plate, multiple working valve plates, a tail valve plate, and a pull rod. The pull rod passes through the through holes of the inlet valve plate, multiple working valve plates, and tail valve plate, respectively, and pulls the inlet valve plate, multiple working valve plates, and tail valve plate together.

[0004] However, during the assembly or testing of the valve plates in a disc-type multi-way valve, residual oil inevitably remains between the valve plates, on the tie rod itself, and between the outer surface of the tie rod and the various through holes. This residual oil will eventually leak out of the disc-type multi-way valve along the surface of the tie rod and through the various through holes, causing inconvenience to the user.

[0005] Therefore, how to prevent residual oil in the disc multi-way valve from leaking out of the valve along the tie rod has become an urgent problem to be solved in the industry. Utility Model Content

[0006] The purpose of this invention is to solve the aforementioned problems existing in the prior art.

[0007] Therefore, according to one aspect of the present invention, a plate-type multi-way valve is provided, comprising: an inlet valve plate; a tail valve plate spaced apart from the inlet valve plate; at least one working valve plate disposed between the inlet valve plate and the tail valve plate; and at least one pull rod, wherein the tail valve plate, the at least one working valve plate, and the inlet valve plate are all provided with pull rod holes, and the at least one pull rod pulls the tail valve plate, the at least one working valve plate, and the inlet valve plate together via the pull rod holes of each valve plate, wherein one of the tail valve plate, the at least one working valve plate, and the inlet valve plate is provided with at least one suction hole on the side facing the other valve plate, and each suction hole is provided with an oil suction core, and the at least one suction hole of the valve plate is arranged adjacent to the pull rod hole of the valve plate.

[0008] According to one embodiment of the present invention, the at least one oil suction hole is a plurality of oil suction holes, and the plurality of oil suction holes are evenly distributed around the pull rod hole of the valve plate.

[0009] According to one embodiment of the present invention, the at least one oil suction hole has a bottom wall and a side wall formed in the valve plate, or only has a side wall penetrating the valve plate.

[0010] According to one embodiment of the present invention, the at least one oil suction hole is in fluid communication with the pull rod hole of the valve plate.

[0011] According to one embodiment of the present invention, the sidewall of the at least one oil suction hole has a groove opened in the longitudinal direction, and the at least one oil suction hole is in fluid communication with the pull rod hole through the groove.

[0012] According to one embodiment of the present invention, the at least one oil suction hole intersects the pull rod hole in the radial direction, so that a portion of the oil suction core in the at least one oil suction hole enters the pull rod hole, or a portion of the oil suction core in the at least one oil suction hole is in close contact with the at least one pull rod passing through the pull rod hole.

[0013] According to one embodiment of the present invention, each of the tail valve plate, the at least one working valve plate, and the oil inlet valve plate is provided with at least one oil suction hole on the side facing the other valve plate.

[0014] According to one embodiment of the present invention, when viewed axially from the at least one pull rod, the at least one oil suction hole around the pull rod hole of one of the tail valve plate, the at least one working valve plate, and the oil inlet valve plate is staggered with the at least one oil suction hole around the pull rod hole of the adjacent valve plate.

[0015] According to one embodiment of the present invention, the oil suction core forms an interference fit with each of the oil suction holes, or the inner surface of each of the oil suction holes is a rough surface.

[0016] According to one embodiment of the present invention, the cross-section of the at least one oil suction hole is circular, elliptical, or polygonal.

[0017] The multi-way valve provided by this utility model effectively prevents residual oil from leaking out of the multi-way valve along the surface of the pull rod and through the through holes of each valve piece by setting multiple oil suction holes on one side of the joint surface of each valve piece through which the pull rod passes. Attached Figure Description

[0018] The above and other features and advantages of this utility model will be better understood from the embodiments of this utility model described below with reference to the accompanying drawings. Wherein: Figure 1 A cross-sectional view of a plate-type multi-way valve according to one embodiment of the present invention is shown; Figure 2A perspective view of the tail valve plate of a plate-type multi-way valve according to one embodiment of the present invention is shown; and Figure 3 and Figure 4 A cross-sectional view of the tail valve plate of a plate-type multi-way valve according to one embodiment of the present invention is shown. Detailed Implementation

[0019] The following description, with reference to the accompanying drawings, describes a plate-type multi-way valve according to one embodiment of the present invention.

[0020] Please refer to Figure 1 As shown, the multi-way valve 1 of this utility model includes an inlet valve plate 11, a first working valve plate 12, a second working valve plate 13, a third working valve plate 14, and a tail valve plate 15 arranged vertically from top to bottom. The first working valve plate 12, the second working valve plate 13, and the third working valve plate 14 are arranged side by side between the inlet valve plate 11 and the tail valve plate 15. The multi-way valve 1 also includes a pull rod 16, which is a rod with a circular cross-section and threads at both ends 161 and 162. The tail valve plate 15, the third working valve plate 14, the second working valve plate 13, and the first working valve plate 12 each have pull rod holes 151, 141, 131, 121, and 111 for the pull rod 16 to pull the valve plates together. The rod hole 151 of the tail valve plate 15, the rod hole 141 of the third working valve plate 14, the rod hole 131 of the second working valve plate 13, and the rod hole 121 of the first working valve plate 12 are through holes through which the rod 16 passes, while the rod hole 111 of the oil inlet valve plate 11 is a screw hole into which the rod 16 is screwed.

[0021] like Figure 1 As shown, one end 161 of the pull rod 16 passes sequentially from bottom to top through the pull rod hole 151 of the tail valve plate 15, the pull rod hole 141 of the third working valve plate 14, the pull rod hole 131 of the second working valve plate 13, and the pull rod hole 121 of the first working valve plate 12, and is screwed into the pull rod hole 111 of the oil inlet valve plate 11. The other end 162 of the pull rod 16 extends out of the lower surface of the tail valve plate 15 and is fastened to the tail valve plate 15 by means of the nut 19, thereby pulling the tail valve plate 15, the third working valve plate 14, the second working valve plate 13, the first working valve plate 12, and the oil inlet valve plate 11 together.

[0022] Although Figure 1 The diagram shows three working valve plates 12, 13, and 14, but those skilled in the art can increase or decrease the number of working valve plates of the plate multi-way valve 1 according to the actual functional requirements of the design.

[0023] The inlet valve 1, first working valve 12, second working valve 13, third working valve 14, and tail valve 15 of the multi-way valve 1 are fluidly connected to each other. Sealing elements (not shown in the figure) are provided between the inlet valve 11 and the first working valve 12, between the first working valve 12 and the second working valve 13, between the second working valve 13 and the third working valve 14, and between the third working valve 14 and the tail valve 15 to seal the oil ports.

[0024] like Figure 1 As shown, when all valve plates 11, 12, 13, 14, and 15 are assembled together by the tie rod 16 and nut 19, the sealing elements between the valve plates are pressed tightly against the mating surfaces of each valve plate under the tension of the tie rod 16 to achieve inter-plate sealing, thereby preventing hydraulic oil leakage during the transmission of each valve plate.

[0025] Preferably, in order to further enhance the technical effect of tightening valve plates 11, 12, 13, 14, and 15 together and achieving a seal between the valve plates, Figure 1 The plate-type multi-way valve 1 shown in the figure is also provided with additional pull rods 17 and 18. Correspondingly, the tail valve plate 15, working valve plates 12, 13, 14 and oil inlet valve plate 11 are also provided with pull rod holes for the pull rods 17 and 18 to tighten each valve plate.

[0026] However, during the actual assembly or testing of the valve plates 11, 12, 13, 14, and 15 of the multi-way valve 1, residual oil inevitably exists between the sealing surfaces of the valve plates 11, 12, 13, 14, and 15 that come into contact with each other, on the pull rod 16 itself, and on the outer surface of the pull rod 16 and the inner surfaces of the pull rod holes 151, 141, 131, and 121. Even if, as described above, the mating surfaces of the valve plates 11, 12, 13, 14, and 15 of the multi-way valve 1 have good sealing, with the passage of time, this residual oil will gradually leak out of the multi-way valve 1 along the surface of the pull rod 16 and through the pull rod holes 121, 131, 141, and 151. This leakage of residual oil is as follows: Figure 1 As shown by the arrows in the diagram. Especially when the ambient temperature rises and the viscosity of the residual oil decreases, leakage of the residual oil in the disc multi-way valve 1 becomes more noticeable. Although the amount of this residual oil leakage along the lever 16 is small, it can still cause inconvenience to the user.

[0027] In view of this, Figure 2 , Figure 3 and Figure 4The figure shows a tail valve plate 15 of a plate-type multi-way valve 1 according to one embodiment of the present invention. The tail valve plate 15 is in the shape of a flat cuboid. Oil ports 21 and 22, and rod holes 151, 152, and 153 for rods 16, 17, and 18 to pass through are provided on the side of the tail valve plate 15 facing the third working valve plate 14. Seals (not shown) are provided at oil ports 21 and 22. The figure also shows that oil suction holes 154 and 155 are provided on one side of the rod hole 151 on the sealing surface of the tail valve plate 15.

[0028] Specifically, such as Figure 2 , Figure 3 and Figure 4 As shown, the oil suction hole 154 is arranged parallel to the tie rod hole 151 and has a bottom wall 1541 and a side wall 1542 formed within the tail valve plate 15. The side wall 1542 of the oil suction hole 154 also has a longitudinally opened slot 1543, and the slot 1543 is in fluid communication with the tie rod hole 151 of the tail valve plate 15. Alternatively, the oil suction hole 154 arranged parallel to the tie rod hole 151 may also penetrate through the tail valve plate 15 and only have a side wall 1542. Figure 2 The diagram also shows two oil suction holes 156 and 157 that are in fluid communication with the tie rod hole 152, and two oil suction holes 158 and 159 that are in fluid communication with the tie rod hole 153.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, the plate-type multi-way valve 1 according to this utility model also provides a plurality of oil suction cores 19. The oil suction cores 19 are installed into the respective oil suction holes 154, 155, 156, 157, 158, and 159 of the tail valve plate 15.

[0030] like Figures 1 to 4 As shown, after the multi-way valve 1 of this utility model is assembled, when there is residual oil between the tail valve plate 15 and the third working valve plate 14, and when the residual oil flows along the pull rod 16 through the pull rod hole 151 of the tail valve plate 15, this residual oil can be absorbed by the oil suction core 19 in the oil suction holes 154 and 155, which are in fluid communication with the pull rod hole 151, and stored in the oil suction holes 154 and 155. Similarly, the residual oil between the tail valve plate 15 and the third working valve plate 14 and the residual oil flowing along the pull rod 17 through the pull rod hole 152 of the tail valve plate 15 can be absorbed and stored in the oil suction holes 156 and 157, and the residual oil between the tail valve plate 15 and the third working valve plate 14 and the residual oil flowing along the pull rod 18 through the pull rod hole 153 can be absorbed and stored in the oil suction holes 158 and 159. This prevents residual oil from flowing out of the plate-type multi-way valve 1.

[0031] Although the above embodiments show oil suction holes 154 and 155 in fluid communication with the tie rod hole 151, oil suction holes 154 and 155 may also not be in fluid communication with the tie rod hole 151, but may only be provided adjacent to the tie rod hole 151. According to one embodiment of the present invention, a plurality of oil suction holes adjacent to each tie rod hole 151, 152, 153 are evenly distributed around the tie rod hole 151, 152, 153.

[0032] According to one embodiment of the present invention, the oil suction holes 154 and 155 of the tail valve plate 15 intersect the pull rod hole 151 in the radial direction, so that a part of the oil suction core 19 in the oil suction holes 154 and 155 enters the pull rod hole 151, or a part of the oil suction core 19 in the oil suction holes 154 and 155 is in close contact with the pull rod 16 passing through the pull rod hole 151, so that the oil suction core 19 can better absorb the residual oil flowing down the pull rod 16.

[0033] Although the above embodiment describes that multiple oil suction holes are provided on the tail valve plate 15, in order to further improve the oil leakage absorption effect, multiple oil suction holes can also be provided on each valve plate 11, 12, 13, 14. Specifically, these oil suction holes are located on the side of each valve plate 11, 12, 13, 14 facing the other valve plate.

[0034] According to one embodiment of the present invention, the plurality of oil suction holes around the pull rod hole of one of the tail valve plate 15, working valve plates 14, 13, 12 and oil inlet valve plate 11 are staggered with the plurality of oil suction holes around the pull rod hole of the adjacent valve plate.

[0035] According to one embodiment of the present invention, the oil-absorbing core 19 is made of cotton or polypropylene fiber material.

[0036] According to one embodiment of the present invention, the oil suction core 19 forms an interference fit with each oil suction hole, and the inner surface of each oil suction hole can be a rough surface, which is more conducive to fixing the oil suction core in each oil suction hole.

[0037] In addition to circular cross-sections, oil suction holes can also have elliptical or polygonal cross-sections.

[0038] Although the pull rod 16 described above has a circular cross-section, the cross-sectional shape of the pull rod 16 can also be elliptical or polygonal. Accordingly, the shape of each pull rod hole corresponds to the cross-sectional shape of the pull rod 16. In particular, the polygonal cross-section of the pull rod 16 facilitates the alignment of the valve plates during the assembly process of passing the pull rod 16 through each valve plate, thereby improving the assembly efficiency of the plate-type multi-way valve 1.

[0039] By providing multiple oil suction holes on one side of the mating surface of the tie rod holes of each valve plate through which the tie rod passes, the plate-type multi-way valve of this invention effectively prevents residual oil from leaking out of the plate-type multi-way valve along the surface of the tie rod and through the tie rod holes of each valve plate.

[0040] While specific embodiments of the present invention have been described, they are presented by way of example only and are not intended to limit the scope of the invention. Rather, the structures described herein can be embodied in many other forms; furthermore, various substitutions and variations can be made to the structural forms described herein without departing from the spirit and scope of the invention.

Claims

1. A plate-type multi-way valve, characterized in that, The plate-type multi-way valve includes: Oil inlet valve plate; The tail valve plate is spaced apart from the oil inlet valve plate; At least one working valve plate, wherein the at least one working valve plate is disposed between the inlet valve plate and the tail valve plate; and At least one pull rod is provided, and the tail valve plate, the at least one working valve plate, and the oil inlet valve plate are all provided with pull rod holes. The at least one pull rod pulls the tail valve plate, the at least one working valve plate, and the oil inlet valve plate together through the pull rod holes of each of the valve plates. Among them, one of the tail valve plate, the at least one working valve plate and the oil inlet valve plate has at least one oil suction hole on the side facing the other valve plate, and each oil suction hole is provided with an oil suction core. The at least one oil suction hole of the valve plate is arranged adjacent to the pull rod hole of the valve plate.

2. The plate-type multi-way valve according to claim 1, characterized in that, The at least one oil suction hole is actually multiple oil suction holes, which are evenly distributed around the pull rod hole of the valve plate.

3. The plate-type multi-way valve according to claim 1, characterized in that, The at least one oil suction hole has a bottom wall and a side wall formed within the valve plate, or has only a side wall extending through the valve plate.

4. The plate-type multi-way valve according to claim 3, characterized in that, The at least one oil suction hole is in fluid communication with the pull rod hole of the valve plate.

5. The plate-type multi-way valve according to claim 4, characterized in that, The sidewall of the at least one oil suction hole has a groove opened longitudinally, and the at least one oil suction hole is in fluid communication with the pull rod hole through the groove.

6. The plate-type multi-way valve according to claim 3, characterized in that, The at least one oil suction hole intersects the pull rod hole in the radial direction, so that a portion of the oil suction core in the at least one oil suction hole enters the pull rod hole, or a portion of the oil suction core in the at least one oil suction hole is in close contact with the at least one pull rod passing through the pull rod hole.

7. The plate-type multi-way valve according to claim 1, characterized in that, Each of the tail valve, the at least one working valve, and the oil inlet valve has at least one oil suction hole on the side facing the other valve.

8. The plate-type multi-way valve according to claim 7, characterized in that, Viewed axially from the at least one pull rod, the at least one oil suction hole around the pull rod hole of one of the tail valve plate, the at least one working valve plate, and the oil inlet valve plate is staggered with the at least one oil suction hole around the pull rod hole of the adjacent valve plate.

9. The plate-type multi-way valve according to claim 1, characterized in that, The oil suction core is interference-fitted with each of the oil suction holes, or the inner surface of each of the oil suction holes is a rough surface.

10. The plate-type multi-way valve according to claim 1, characterized in that, The cross-section of the at least one oil suction hole is circular, elliptical, or polygonal.

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