Novel hydraulic reversing valve

Abstract

The utility model belongs to the technical field of hydraulic reversing valves, and discloses a novel hydraulic reversing valve which comprises a hydraulic reversing valve body, filtering devices are arranged on the surface of the hydraulic reversing valve body and located at oil inlets, each filtering device comprises a fixing box, and the fixing boxes are fixedly connected with the hydraulic reversing valve body. The lower surface of the fixed box is fixedly connected with a conveying pipe, and the conveying pipe communicates with the fixed box. By arranging the placing seat and the filtering piece, the filtering piece is placed on the placing seat, the vertical pipe slides downwards, the filtering piece is fixed through extrusion for use, during cleaning, the vertical pipe slides upwards, the filtering piece is taken out, impurities are removed, and the device is very convenient and does not need to be disassembled.

Description

Technical Field

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

[0002] Hydraulic reversing valves are divided into two-way, three-way, four-way and five-way valves according to the number of passages controlled by the reversing valve. The absolute movement of the valve core and the valve body is used to open, close or change the direction of oil flow, thereby enabling the hydraulic actuator and its drive mechanism to start, stop or change the direction of movement.

[0003] The existing hydraulic reversing valve is provided with a filter to filter the pressure oil entering the reversing valve to prevent impurities from entering the reversing valve and blocking the oil path. However, when cleaning the impurities in the filter, the filter needs to be disassembled and taken out, which is troublesome to clean the impurities in the filter.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility Model Content

[0005] In order to solve the above problems, the purpose of the utility model is to provide a new type of hydraulic reversing valve.

[0006] To achieve the above-mentioned purpose, the utility model proposes a new type of hydraulic reversing valve, including a hydraulic reversing valve body, the surface of the hydraulic reversing valve body is provided with a filtering device at the oil inlet, the filtering device includes a fixed box, the fixed box is fixedly connected to the hydraulic reversing valve body, the lower surface of the fixed box is fixedly connected to a delivery pipe, the delivery pipe is communicated with the fixed box, the delivery pipe is inserted into the oil inlet, one side of the fixed box is provided with a square through groove, the upper surface of the fixed box is fixedly connected to a fixed pipe, the upper end of the fixed pipe is fixedly connected to an infusion pipe, the fixed pipe is slidably connected to a vertical pipe, the fixed box is fixedly connected to a placement seat, the placement seat is provided with a circular through groove, the placement seat is communicated with the delivery pipe, and a filter is placed on the placement seat.

[0007] In one example, a placement groove is provided on the placement seat, and the placement groove is used to place the filter element. The filter element includes a mounting frame, and the mounting frame cooperates with the placement groove. A fixing ring is provided on the inner side of the mounting frame, and a filter plate is installed on the inner side of the fixing ring.

[0008] In one example, the side wall of the vertical tube is fixedly connected to the shell, the shell has the same radius as the fixed ring, two sliding grooves are provided on the outer side of the fixed ring, sliders are slidably connected in the sliding grooves, the two sliders are fixedly connected to the mounting frame, a spring is fixedly connected between the slider and the sliding groove, a circular groove is provided on the bottom surface of the placement groove, the circular groove cooperates with the fixed ring, and the circular groove is connected to the conveying pipe.

[0009] In one example, the outer side of the shell is fixedly connected to a fixing plate, the fixing plate is threadedly connected to a threaded rod, and the threaded rod passes through a fixing box and is rotatably connected to the fixing box.

[0010] In one example, a vertical rod is fixedly connected inside the fixing box, and the vertical rod passes through the fixing plate and is slidably connected to the fixing plate.

[0011] In one example, the radius of the filter plate is larger than the radius of the circular through groove on the placement seat, and the radius of the shell is larger than the radius of the vertical pipe.

[0012] In one example, the thickness of the installation frame is greater than the thickness of the fixing ring, and the thickness of the installation frame is less than the height of the square through slot.

[0013] The novel hydraulic reversing valve proposed by the utility model can bring the following beneficial effects:

[0014] First, by setting a placement seat and a filter element, the filter element is placed on the placement seat, the vertical pipe slides down, and the fixing ring is pressed down to make the fixing ring slide down, and the fixing ring enters the circular groove to filter the liquid entering the reversing valve for reversing, and the impurities in the liquid are filtered in the filter element, and then the vertical pipe is slid up, the filter element is taken out and the impurities are removed, which is very convenient and does not need to be disassembled;

[0015] Secondly, by setting the shell, the vertical tube slides down, and the shell presses down the fixing ring, so that the fixing ring slides down and enters the circular groove, so that the shell and the fixing ring are in closer contact, the gap is reduced, and liquid overflow is avoided during infusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 A cross-sectional schematic diagram of a fixed box.

[0019] Figure 3 A schematic diagram of the filter element and the base.

[0020] Figure 4 It is a schematic diagram of the structure of the vertical pipe and the fixed pipe.

[0021] Figure 5 Schematic diagram of the structure of the filter element.

[0022] 1. Hydraulic reversing valve body; 2. Filter device; 21. Fixed box; 22. Delivery pipe; 23. Fixed pipe; 24. Infusion pipe; 25. Vertical pipe; 26. Placement seat; 3. Filter element; 31. Mounting frame; 32. Fixed ring; 33. Filter plate; 4. Placement groove; 5. Shell; 6. Slider; 7. Spring; 8. Fixed plate; 9. Threaded rod; 10. Vertical rod. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0024] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description of reference terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more schemes or examples.

[0028] like Figure 1 to Figure 5 As shown, the embodiment of the utility model proposes a new type of hydraulic reversing valve, including a hydraulic reversing valve body 1, the surface of the hydraulic reversing valve body 1 is provided with a filter device 2 at the oil inlet, the filter device 2 includes a fixed box 21, the fixed box 21 is fixedly connected to the hydraulic reversing valve body 1, the lower surface of the fixed box 21 is fixedly connected to a delivery pipe 22, the delivery pipe 22 is communicated with the fixed box 21, the delivery pipe 22 is inserted into the oil inlet, a square through groove is provided on one side of the fixed box 21, the upper surface of the fixed box 21 is fixedly connected to a fixed pipe 23, the upper end of the fixed pipe 23 is fixedly connected to a liquid infusion pipe 24, the fixed pipe 23 is slidably connected to a vertical pipe 25, the fixed box 21 is fixedly connected to a placement seat 26, and the placement seat 26 is provided with a circular through groove, The placement seat 26 is connected to the delivery pipe 22, and a filter element 3 is placed on the placement seat 26. The delivery pipe 22 is inserted into the oil inlet. When in use, the filter element 3 is placed on the placement seat 26, and the vertical pipe 25 slides down in the fixed pipe 23, so that the lower end of the vertical pipe 25 is pressed on the filter element 3 on the placement seat 26, and the pressure oil entering the inside of the reversing valve is filtered, and impurities in the liquid are filtered in the filter element 3. Then, the vertical pipe 25 is slid up, and the filter element 3 is taken out through the square through groove. The impurities on the filter element 3 are cleaned, which is very convenient and avoids excessive accumulation of impurities on the filter element 3. At the same time, it is prevented that the impurities enter the hydraulic reversing valve body 1 and stay in the hydraulic reversing valve body 1, causing the inside of the reversing valve body to be blocked by impurities.

[0029] Specifically, a placement groove 4 is provided on the placement seat 26, and the placement groove 4 is used to place the filter element 3. The filter element 3 includes a mounting frame 31, and the mounting frame 31 cooperates with the placement groove 4. A fixing ring 32 is provided on the inner side of the mounting frame 31, and a filter plate 33 is installed on the inner side of the fixing ring 32. The mounting frame 31 is stuck in the placement groove 4 on the placement seat 26 to fix the mounting frame 31 to prevent the mounting frame 31 from horizontally sliding and shifting. When removing the mounting frame 31, it only needs to push the mounting frame 31 upward.

[0030] Specifically, the side wall of the vertical tube 25 is fixedly connected to the shell body 5, and the radius of the shell body 5 and the fixing ring 32 is the same. Two sliding grooves are provided on the outer side of the fixing ring 32, and sliders 6 are slidably connected in the sliding grooves. The two sliders 6 are fixedly connected to the mounting frame 31, and a spring 7 is fixedly connected between the slider 6 and the sliding groove. A circular groove is provided on the bottom surface of the placement groove 4, and the circular groove cooperates with the fixing ring 32. The circular groove is connected to the delivery tube 22, and the spring 7 pulls the fixing ring 32 so that the fixing ring 32 is located in the mounting frame 31. The mounting frame 31 is placed in the placement groove 4, the vertical tube 25 slides down, and the shell body 5 presses down the fixing ring 32 to make the fixing ring 32 slide down, and the fixing ring 32 enters the circular groove, so that the shell body 5 and the fixing ring 32 are in closer contact, reducing the gap to avoid liquid overflow during infusion, and sealing rings are installed on the upper and lower surfaces of the fixing ring 32. The sealing ring on the upper surface contacts the shell body 5, and the sealing ring on the lower surface contacts the circular groove, thereby enhancing the sealing effect.

[0031] Specifically, the outer side of the shell 5 is fixedly connected to the fixing plate 8, and the fixing plate 8 is threadedly connected to the threaded rod 9. The threaded rod 9 penetrates the fixing box 21 and is rotatably connected to the fixing box 21. The threaded rod 9 is rotated, and the threaded rod 9 controls the fixing plate 8 to descend, driving the shell 5 and the vertical pipe 25 to slide down, so that the shell 5 presses down the fixing ring 32. The threaded rod 9 keeps the shell 5 pressing down the fixing ring 32, so that the shell 5 and the fixing ring 32 maintain a close contact state.

[0032] Specifically, the interior of the fixed box 21 is fixedly connected to the vertical rod 10 , the vertical rod 10 passes through the fixed plate 8 and is slidably connected to the fixed plate 8 , and the vertical rod 10 provides a guiding function.

[0033] Specifically, the radius of the filter plate 33 is larger than the radius of the circular groove on the placement seat 26, and the radius of the shell 5 is larger than the radius of the vertical pipe 25. The filter plate 33 will cause a certain obstruction to the transported liquid, and the fluidity will be reduced. The liquid can stay between the shell 5 and the fixed ring 32 to contain the liquid and reduce the squeezing pressure on the side walls of the shell 5 and the fixed ring 32. At the same time, when the liquid flows, it impacts the fixed ring 32, so that the fixed ring 32 is tightly pressed in the circular groove.

[0034] Specifically, the thickness of the installation frame 31 is greater than the thickness of the fixing ring 32 , and the thickness of the installation frame 31 is less than the height of the square through slot, so that the installation frame 31 can extend into the fixing box 21 , and the installation frame 31 can be controlled to move up and down through the square through slot and placed in the placement slot 4 .

[0035] Working principle: the filter element 3 is placed on the placement seat 26, the mounting frame 31 is stuck in the placement groove 4 on the placement seat 26, the threaded rod 9 is rotated, the threaded rod 9 controls the fixing plate 8 to descend, and drives the shell 5 and the vertical pipe 25 to slide down, so that the shell 5 presses down the fixing ring 32, the fixing ring 32 slides down, and the fixing ring 32 enters the circular groove, the filter plate 33 filters the liquid entering the reversing valve for reversing, and filters the impurities in the liquid in the filter plate 33, then slides up the vertical pipe 25, takes out the filter element 3 through the square through groove, and cleans the impurities on the filter element 3.

[0036] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0037] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A new type of hydraulic reversing valve, characterized in that: The invention comprises a hydraulic reversing valve body (1), wherein a filter device (2) is provided on the surface of the hydraulic reversing valve body (1) at the oil inlet, wherein the filter device (2) comprises a fixed box (21), wherein the fixed box (21) is fixedly connected to the hydraulic reversing valve body (1), wherein a delivery pipe (22) is fixedly connected to the lower surface of the fixed box (21), wherein the delivery pipe (22) is communicated with the fixed box (21), and wherein the delivery pipe (22) is inserted into the oil inlet, wherein a square through groove is provided on one side of the fixed box (21), wherein a fixed pipe (23) is fixedly connected to the upper surface of the fixed box (21), wherein the upper end of the fixed pipe (23) is fixedly connected to a liquid infusion pipe (24), wherein a vertical pipe (25) is slidably connected inside the fixed pipe (23), wherein the fixed box (21) is fixedly connected to a placement seat (26), wherein a circular through groove is provided on the placement seat (26), wherein the placement seat (26) is communicated with the delivery pipe (22), and wherein a filter element (3) is placed on the placement seat (26).

2. A novel hydraulic reversing valve according to claim 1, characterized in that: The placement seat (26) is provided with a placement groove (4), the placement groove (4) is used to place the filter element (3), the filter element (3) comprises a mounting frame (31), the mounting frame (31) is matched with the placement groove (4), a fixing ring (32) is provided on the inner side of the mounting frame (31), and a filter plate (33) is installed on the inner side of the fixing ring (32).

3. A novel hydraulic reversing valve according to claim 2, characterized in that: The side wall of the vertical pipe (25) is fixedly connected to the shell (5), the shell (5) and the fixed ring (32) have the same radius, the outer side of the fixed ring (32) is provided with two sliding grooves, the sliding grooves are slidably connected with sliders (6), the two sliders (6) are fixedly connected to the installation frame (31), and the sliders (6) and the sliding grooves are fixedly connected with springs (7), and the bottom surface of the placement groove (4) is provided with a circular groove, the circular groove is matched with the fixed ring (32), and the circular groove is connected with the conveying pipe (22).

4. A novel hydraulic reversing valve according to claim 3, characterized in that: The outer side of the housing (5) is fixedly connected to a fixing plate (8), the fixing plate (8) is threadedly connected to a threaded rod (9), and the threaded rod (9) passes through the fixing box (21) and is rotatably connected to the fixing box (21).

5. A novel hydraulic reversing valve according to claim 4, characterized in that: The fixing box (21) is internally fixedly connected to a vertical rod (10), and the vertical rod (10) passes through the fixing plate (8) and is slidably connected to the fixing plate (8).

6. A novel hydraulic reversing valve according to claim 2, characterized in that: The radius of the filter plate (33) is greater than the radius of the circular through groove on the placement seat (26), and the radius of the shell (5) is greater than the radius of the vertical pipe (25).

7. A novel hydraulic reversing valve according to claim 2, characterized in that: The thickness of the installation frame (31) is greater than the thickness of the fixing ring (32), and the thickness of the installation frame (31) is less than the height of the square through slot.

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