Plug-in mounting type hydraulic control one-way valve

Abstract

The utility model discloses a plug-in mounting type hydraulic control one-way valve, which relates to the field of one-way control valves and comprises a connector, one end of the connector is fixedly connected with a one-way valve body, a filter plate is sleeved on the inner side of the connector, a connecting mechanism is arranged on the inner wall of the connector, and a threaded groove is arranged on the connector. The connecting mechanism comprises a receding groove formed in the inner wall of the connecting opening, and a first spring is fixedly connected in the receding groove. By arranging the connecting mechanism, when the oil pipe is fixed to the connecting opening, a clamping block in the connecting mechanism is clamped in a clamping groove, meanwhile, the clamping block cannot retract, the filter plate is limited and fixed, and therefore the oil pipe is fixed to the connecting opening; and after the oil pipe is taken down, the first moving rod does not limit the second moving rod any more, at the moment, the clamping block can be moved out of the clamping groove, the filter plate can be taken out of the connecting opening to be cleaned, and blockage caused by the fact that filter holes in the filter plate are blocked by impurities after the filter plate is used for a long time is prevented.

Description

Technical Field

[0001] The utility model relates to the field of one-way control valves, and particularly to a cartridge-type hydraulically controlled one-way valve. Background Technique

[0002] A hydraulically controlled one-way valve is a valve that can make the one-way valve flow reversely by relying on the control fluid pressure. The difference between a hydraulically controlled one-way valve and an ordinary one-way valve is that there is an additional control oil circuit. When the control oil circuit is not connected to the pressure oil, the hydraulically controlled one-way valve works like an ordinary one-way valve, and the pressure oil only flows from the oil inlet to the oil outlet and cannot flow reversely. When there is a control pressure input in the control oil circuit, the piston push rod moves to the right under the action of the pressure oil, and the push rod pushes open the one-way valve to connect the oil inlet and outlet. The hydraulically controlled one-way valve plays an important role in the hydraulic support equipment of coal mining machinery.

[0003] However, when the existing hydraulically controlled one-way valve is in use, the connection of the oil pipe is relatively inconvenient. At the same time, after long-term use, impurities exist in the hydraulic oil, which affects the sealing performance of the valve core, resulting in oil leakage and shortening the service life. Therefore, a cartridge-type conical surface hard-sealed hydraulically controlled one-way valve is proposed.

[0004] An existing patent (publication number: CN 210738970 U) for a cartridge-type conical surface hard-sealed hydraulically controlled one-way valve includes a pressure port, a control piston, a push rod, a valve core, a spring and a filtering structure. By increasing the pressure through the control pressure measuring port, the piston rod moves, thereby pushing the push rod downward. The push rod presses against the valve core, and the valve core compresses the spring downward, so that a gap appears between the valve core and the second oil passage. The hydraulic oil flows from the first oil passage through the filtering structure to the second oil passage and then to the oil outlet. When the hydraulic oil passes through the filtering structure, the hydraulic oil is filtered at the first level by using a coarse filter screen and a filter cloth, and then filtered at the second level by a filter element, so that the impurities in the hydraulic oil are removed, the sealing performance of the valve core is improved, and the service life of the hydraulically controlled one-way valve is extended.

[0005] However, the above patent still has certain defects. After long-term use, more impurities adhere to the filtering structure and are prone to blockage. And the filtering structure is located inside the one-way valve body near the oil suction port, which is not convenient for cleaning and replacement. At the same time, a single set of threaded connection fixing method is used to install the one-way valve, and it will become loose due to the vibration generated during use, resulting in a decrease in the sealing performance of the device and having a certain impact on the normal use of the device. Summary of the Utility Model

[0006] Based on this, the purpose of the present utility model is to provide a cartridge-type hydraulically controlled one-way valve to solve the technical problems raised in the above background.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An inserted type hydraulic check valve, including a connection port, one end of the connection port is fixedly connected with a check valve body, a filter plate is sleeved inside the connection port, a connection mechanism is arranged on the inner wall of the connection port, and a threaded groove is provided on the connection port; The connection mechanism includes a relief groove opened on the inner wall of the connection port, a first spring is fixedly connected inside the relief groove, one end of the first spring is fixedly connected with a clamping block, a clamping groove is opened on the filter plate, and a connection component is fixedly connected to one side of the clamping block.

[0008] As a preferred technical solution of the present utility model, a handle is fixedly connected to one side of the filter plate, and four groups of the relief groove, the first spring, the clamping block, the clamping groove, the connection component and the handle are arranged in a circumferential array with the filter plate as the axis.

[0009] As a preferred technical solution of the present utility model, the connection component includes a first moving rod fixedly connected to one end of the clamping block, a first sliding groove is opened on the connection port on one side of the relief groove, a second sliding groove is opened on the connection port, the first sliding groove is slidably connected with the first moving rod, a second moving rod is slidably connected inside the second sliding groove, and a second spring is sleeved on the outer wall of the second moving rod.

[0010] As a preferred technical solution of the present utility model, the bottom end of the second spring is fixedly connected with a threaded groove, the top end of the second moving rod is fixedly connected with a pressing ring, and the top end of the second moving rod is fixedly connected with the pressing ring.

[0011] As a preferred technical solution of the present utility model, a sealing ring is fixedly connected inside the threaded groove, and a fixing mechanism is fixedly connected to the outer wall of the connection port.

[0012] As a preferred technical solution of the present utility model, the fixing mechanism includes a threaded block fixedly connected to the outer wall of the connection port, a threaded rod is threadedly sleeved inside the threaded block, one end of the threaded rod is rotatably connected with an arc-shaped clamping block, and an annular groove is opened on the connection port.

[0013] As a preferred technical solution of the present utility model, the threaded rod is threadedly connected with the connection port, and four groups of the threaded block, the threaded rod and the arc-shaped clamping block are arranged in a circumferential array with the annular groove as the axis.

[0014] In summary, the present utility model mainly has the following beneficial effects:

[0015] The utility model fixes the oil pipe on the connection port by setting a connection mechanism. When the oil pipe is fixed on the connection port, the clamping block in the connection mechanism is stuck in the clamping groove, and at the same time, the clamping block cannot retract, so as to limit and fix the filter plate, so that the filter plate will not loosen due to the flow of liquid during filtration. After the oil pipe is removed, the first moving rod no longer limits the second moving rod. At this time, the clamping block can be removed from the clamping groove, and the filter plate can be taken out of the connection port for cleaning, preventing the filter holes on the filter plate from being blocked by impurities after long-term use, resulting in blockage;

[0016] The utility model sets a fixing mechanism. After the oil pipe is fixed on the connection port through the thread groove, the arc-shaped clamping block fixes the oil pipe again to prevent the oil pipe from loosening in the thread groove. At the same time, the inner wall of the oil pipe fits tightly with the sealing ring, with a certain sealing performance, preventing the liquid from flowing out from the connection between the oil pipe and the connection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is a schematic diagram of a partial structure of the utility model;

[0019] Figure 3 is a schematic diagram of the structure of the connection mechanism inside the connection port of the utility model;

[0020] Figure 4 is a sectional view of the filter plate of the utility model.

[0021] In the figure: 100, connection port; 200, filter plate; 300, connection mechanism; 400, thread groove; 500, sealing ring; 600, fixing mechanism; 700, one-way valve body;

[0022] 310, relief groove; 320, first spring; 330, clamping block; 340, clamping groove; 350, connection component; 360, pressing ring;

[0023] 351, first sliding groove; 352, first moving rod; 353, second sliding groove; 354, second moving rod; 355, second spring;

[0024] 610, threaded block; 620, threaded rod; 630, arc-shaped clamping block; 640, annular groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0026] The following describes an embodiment of the utility model based on its overall structure.

[0027] A plug-in hydraulically controlled one-way valve, such as Figures 1 to 4 As shown, it includes a connection port 100, one end of which is fixedly connected to a one-way valve body 700, a filter plate 200 is sleeved on the inner side of the connection port 100, a connection mechanism 300 is provided on the inner wall of the connection port 100, and a thread groove 400 is provided on the connection port 100; a sealing ring 500 is fixedly connected to the inner side of the thread groove 400, and a fixing mechanism 600 is fixedly connected to the outer wall of the connection port 100; the fixing mechanism 600 includes a fixing member fixedly connected to the outer wall of the connection port 100. The threaded block 610 is connected, and the inner wall of the threaded block 610 is threadedly sleeved with a threaded rod 620, one end of the threaded rod 620 is rotatably connected to an arc-shaped clamping block 630, and an annular groove 640 is provided on the connecting port 100; the threaded rod 620 and the connecting port 100 are threadedly connected, and the threaded block 610, the threaded rod 620 and the arc-shaped clamping block 630 are each provided with four groups, and the four groups of threaded blocks 610, the threaded rod 620 and the arc-shaped clamping block 630 are arranged in a circular array with the annular groove 640 as the axis.

[0028] Insert the oil pipe into the thread groove 400 on the connection port 100. Since the outer wall of the oil pipe is provided with threads matching the threads in the thread groove 400, rotate the oil pipe to fix it in the thread groove 400 on the connection port 100. The inner wall of the oil pipe fits tightly with the sealing ring 500. The sealing ring 500 is made of elastic rubber material. While fixing the connection between the oil pipe and the connection port 100, it has a certain sealing property to prevent liquid from flowing out from the connection between the oil pipe and the connection port 100.

[0029] In order to strengthen the fixation between the oil pipe and the connecting port 100 and prevent the two from loosening through a single threaded connection, after the connecting port 100 is fixed in the threaded groove 400, the threaded rod 620 is rotated. Since the inner wall of the threaded block 610 connected to the threaded rod 620 is provided with a thread matching the outer wall of the threaded rod 620, the inner wall of the connecting port 100 connected to the threaded rod 620 is provided with a thread matching the outer wall of the threaded rod 620. While rotating the threaded rod 620, the threaded rod 620 moves toward the arc clamping block 630, thereby driving the arc clamping block 630 to fit the outer wall of the oil pipe and tightly press against the outer wall of the oil pipe. The four groups of arc clamping blocks 630 are all tightly pressed against the outer wall of the oil pipe to fix the oil pipe again to prevent the oil pipe from loosening in the threaded groove 400. The arc clamping block 630 that fits the outer wall of the oil tank is provided with anti-skid patterns to increase the friction between it and the oil pipe and prevent slipping between the two.

[0030] Please refer to Figure 3 and Figure 4, the connecting mechanism 300 includes a relief groove 310 formed on the inner wall of the connecting port 100. A first spring 320 is fixedly connected inside the relief groove 310. One end of the first spring 320 is fixedly connected to a clamping block 330. A clamping groove 340 is formed on the filter plate 200. A connecting component 350 is fixedly connected to one side of the clamping block 330; a handle 370 is fixedly connected to one side of the filter plate 200. The relief groove 310, the first spring 320, the clamping block 330, the clamping groove 340, the connecting component 350 and the handle 370 are all provided in four groups. The four groups of relief grooves 310, first springs 320, clamping blocks 330, clamping grooves 340, connecting components 350 and handles 370 are arranged in a circumferential array with the filter plate 200 as the axis; the connecting component 350 includes a first moving rod 352 fixedly connected to one end of the clamping block 330. A first sliding groove 351 is formed on the connecting port 100 on one side of the relief groove 310. A second sliding groove 353 is formed on the connecting port 100. The first sliding groove 351 is slidably connected to the first moving rod 352. A second moving rod 354 is slidably connected inside the second sliding groove 353. A second spring 355 is sleeved on the outer wall of the second moving rod 354; the bottom end of the second spring 355 is fixedly connected to a threaded groove 400. The top end of the second moving rod 354 is fixedly connected to a pressing ring 360. The top end of the second moving rod 354 is fixedly connected to the pressing ring 360.

[0031] The connection between the filter plate 200 and the connecting port 100 is achieved by clamping the clamping block 330 in the clamping groove 340 to fix the filter plate 200 inside the connecting port 100. When there is no oil pipe installed in the threaded groove 400 on the connecting port 100, the filter plate 200 can be taken out. At this time, pull the handle 370 outward from the connecting port 100 to drive the filter plate 200 to move outward from the connecting port 100 to take out the filter plate 200. During the movement of the filter plate 200, the clamping block 330 originally stuck in the clamping groove 340 retracts into the relief groove 310, pushing the first spring 320 to be compressed, and driving the first moving rod 352 to slide into the first sliding groove 351. When the filter plate 200 is far away from the relief groove 310, the first spring 320 resets to drive the clamping block 330 to reset. When an oil pipe is installed in the threaded groove 400, the oil pipe is inserted into the threaded groove 400 to drive the pressing ring 360 to move in the direction of the second moving rod 354, and at the same time drive the second spring 355 to be compressed, thereby driving the second moving rod 354 to move downward. Since the inclined plane angles of the second moving rod 354 and the first moving rod 352 are the same, after the second moving rod 354 moves downward, its inclined plane fits with the inclined plane of the first moving rod 352, and at the same time restricts the first moving rod 352 to only move in the direction of the clamping block 330, driving the clamping block 330 to tightly clamp in the clamping groove 340. At this time, the clamping block 330 cannot retract into the relief groove 310, limiting and fixing the filter plate 200 to prevent the filter plate 200 from loosening due to the flow of liquid during use. The parts not involved in this device are the same as or can be implemented by using the prior art.

[0032] Although embodiments of the present utility model have been shown and described, the specific embodiments are merely explanations of the present utility model and are not limitations thereof. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may, without departing from the principles and purposes of the present utility model, make modifications, substitutions and variations that do not contribute creatively to the embodiments as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A plug-in hydraulically controlled one-way valve, comprising a connection port (100), characterized in that: One end of the connection port (100) is fixedly connected to a one-way valve body (700), a filter plate (200) is sleeved on the inner side of the connection port (100), a connection mechanism (300) is provided on the inner wall of the connection port (100), and a threaded groove (400) is provided on the connection port (100); The connection mechanism (300) comprises a clearance groove (310) provided on the inner wall of the connection port (100), a first spring (320) being fixedly connected in the groove of the clearance groove (310), a clamping block (330) being fixedly connected at one end of the first spring (320), a clamping groove (340) being provided on the filter plate (200), and a connection assembly (350) being fixedly connected at one side of the clamping block (330).

2. A cartridge type hydraulically controlled one-way valve according to claim 1, characterized in that: A handle (370) is fixedly connected to one side of the filter plate (200), and the give way groove (310), the first spring (320), the block (330), the slot (340), the connection assembly (350) and the handle (370) are each provided in four groups, and the four groups of the give way groove (310), the first spring (320), the block (330), the slot (340), the connection assembly (350) and the handle (370) are arranged in a circular array with the filter plate (200) as the axis.

3. The plug-in hydraulically controlled one-way valve according to claim 1, characterized in that: The connecting assembly (350) includes a first moving rod (352) fixedly connected to one end of the block (330); a first sliding groove (351) is provided on the connecting port (100) at one side of the yield groove (310); a second sliding groove (353) is provided on the connecting port (100); the first sliding groove (351) is slidably connected to the first moving rod (352); a second moving rod (354) is slidably connected in the groove of the second sliding groove (353); and a second spring (355) is sleeved on the outer wall of the second moving rod (354).

4. A plug-in hydraulically controlled one-way valve according to claim 3, characterized in that: The bottom end of the second spring (355) is fixedly connected to a threaded groove (400), the top end of the second moving rod (354) is fixedly connected to a pressing ring (360), and the top end of the second moving rod (354) and the pressing ring (360) are fixedly connected.

5. The cartridge type hydraulically controlled one-way valve according to claim 1, characterized in that: A sealing ring (500) is fixedly connected to the inner side of the thread groove (400), and a fixing mechanism (600) is fixedly connected to the outer wall of the connection port (100).

6. The cartridge type hydraulically controlled one-way valve according to claim 5, characterized in that: The fixing mechanism (600) comprises a threaded block (610) fixedly connected to the outer wall of the connecting port (100); a threaded rod (620) is threadedly sleeved on the inner wall of the threaded block (610); one end of the threaded rod (620) is rotatably connected to an arc-shaped clamping block (630); and an annular groove (640) is provided on the connecting port (100).

7. The plug-in hydraulically controlled one-way valve according to claim 6, characterized in that: The threaded rod (620) is threadedly connected to the connection port (100), and the threaded block (610), the threaded rod (620) and the arc-shaped clamping block (630) are each provided in four groups, and the four groups of the threaded block (610), the threaded rod (620) and the arc-shaped clamping block (630) are arranged in a circular array with the annular groove (640) as the axis.

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