Quick release type hydraulic pipeline connecting device

Abstract

The utility model discloses a quick-release hydraulic pipeline connecting device, which belongs to the technical field of hydraulic pipeline connection and comprises a male head, a female head inserted and mounted at the end part of the male head, a valve core arranged in the male head and the female head in a sliding manner, a guide rod fixedly mounted at the inner end part of the valve core and a clamping sleeve arranged at the end part of the female head in a sliding manner. The filter screens are arranged in the male head and the female head in a sliding mode, the filter screens are fixed to the ends of the guide rods, the filter screens are used in cooperation with a pollution discharge mechanism composed of the grooves, the blocking blocks, the first tension springs, the sliding rods, the flow guide grooves, the flow guide pipes and the sealing covers, when normal connection and use are carried out, the filter screens are used for filtering impurities, and when the connectors are detached, the filter screens are fixed to the ends of the guide rods. The guide rod drives the filter screen to slide and reset, certain impact force can be applied to the filter screen, part of impurities on the surface of the filter screen are vibrated off, then the impurities are discharged through the sewage discharging mechanism, the filtering effect of the filter screen in the using process is guaranteed, and practicability is higher.

Description

Technical Field

[0001] This utility model relates to a pipeline connection device, and more particularly to a quick-release hydraulic pipeline connection device, belonging to the field of hydraulic pipeline connection technology. Background Technology

[0002] Hydraulic quick-release couplings are key components in hydraulic systems that enable rapid connection and disconnection. Due to their convenient and efficient characteristics, they are widely used in engineering machinery, industrial equipment, aerospace and other fields. The coupling consists of a male and a female head, which are quickly locked together by a ferrule.

[0003] However, in actual use, due to the high requirements of the valve core structure for the cleanliness of hydraulic oil, impurities are easily embedded in the sealing surface, causing leakage, or jamming internal components, affecting the flow of hydraulic oil. Although some joints in the existing technology have internal filters, the filters are fixed, making it inconvenient to remove blockages and clean the filters. In addition, high-frequency vibrations during equipment operation (such as during construction machinery operation) can cause the ferrule to loosen or even fall off, affecting the safe use of the equipment.

[0004] To address this issue, a quick-release hydraulic pipeline connection device was designed. Utility Model Content

[0005] The main purpose of this utility model is to provide a quick-release hydraulic pipeline connection device to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] A quick-release hydraulic pipeline connection device includes a male connector, a female connector inserted into and installed at the end of the male connector, a valve core slidably disposed inside the male connector and the female connector, a guide rod fixedly installed at the inner end of the valve core, and a retainer slidably disposed at the end of the female connector.

[0008] Both the male and female connectors have filter screens that slide along the axial direction inside. The outer side of each filter screen is fixed with a mounting ring, and the outer side of the mounting ring is in contact with the inner wall of the male and female connectors respectively. Both the male and female connectors are equipped with a sewage discharge mechanism at the bottom.

[0009] A limiting mechanism is provided between the outer side of the ferrule and the female head.

[0010] Preferably, the sewage discharge mechanism includes a groove, a plug, a first tension spring, a slide rod, a guide channel, and a diversion component. The groove is opened at the bottom of the male and female heads. The plug is vertically slidably arranged inside the groove. The first tension spring is fixedly installed between the bottom of the plug and the inner bottom end of the groove. The slide rod is vertically fixed at the middle position of the bottom of the plug. The bottom end of the slide rod extends to the bottom of the male and female heads. The bottom of the groove is provided with a guide channel, and the bottom of the guide channel is provided with a diversion component.

[0011] Preferably, the drainage assembly includes a drainage tube and a sealing cap. The drainage tube is installed at the bottom of the drainage channel, and the bottom of the drainage tube is provided with a threaded interface. A sealing cap is provided on the outside of the threaded interface.

[0012] Preferably, the block is T-shaped, and the bottom end of the block is attached to the top of the guide channel.

[0013] Preferably, the limiting mechanism includes a sliding hole, a plug rod, a pressure cap, a second tension spring, and an annular groove. The sliding hole is opened on the surface of the sleeve, and the plug rod is vertically installed inside the sliding hole. The top end of the plug rod is fixed with a pressure cap, the bottom end of the pressure cap is in contact with the surface of the sleeve, and a second tension spring is fixed between the bottom end of the pressure cap and the outer side of the sleeve. An annular groove that mates with the plug rod is opened on the outer side of the female head.

[0014] Preferred: The outer side of the cap is evenly provided with anti-slip texture along the circumference, and the bottom end of the insertion rod is arc-shaped.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model features a filter screen that slides inside both the male and female connectors and is fixed to the end of the guide rod. It is used in conjunction with a drainage mechanism consisting of a groove, a plug, a first tension spring, a sliding rod, a guide channel, a guide pipe, and a sealing cap. During normal connection and use, the filter screen filters impurities. When the connector is disassembled, the guide rod causes the filter screen to slide back to its original position, applying a certain impact force to the screen and shaking off some impurities. The drainage mechanism then discharges the impurities, ensuring the effective filtration of the filter screen and enhancing its practicality.

[0017] 2. This utility model has a limiting mechanism consisting of a sliding hole, a plug rod, a pressure cap, a second tension spring, and an annular groove between the outer side of the ferrule and the female head. This mechanism can limit the position of the ferrule after connection, prevent the ferrule from sliding axially, and ensure the locking effect of the ferrule during use. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the present invention;

[0019] Figure 2 This is the front view of the present invention;

[0020] Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 4 For the present utility model Figure 1 Enlarged view of section B in the middle.

[0022] In the diagram: 1. Male connector; 2. Female connector; 3. Valve core; 4. Guide rod; 5. Sleeve; 6. Filter screen;

[0023] 7. Sewage discharge mechanism; 701. Groove; 702. Block; 703. First tension spring; 704. Slide rod; 705. Guide channel; 706. Guide pipe; 707. Sealing cover;

[0024] 8. Limiting mechanism; 801. Sliding hole; 802. Insert rod; 803. Pressure cap; 804. Second tension spring; 805. Annular groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Example 1

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this embodiment proposes a quick-release hydraulic pipeline connection device, including a male connector 1, a female connector 2 inserted and installed at the end of the male connector 1, a valve core 3 slidably disposed inside the male connector 1 and the female connector 2, a guide rod 4 fixedly installed at the inner end of the valve core 3, and a retainer 5 slidably disposed at the end of the female connector 2.

[0032] Both male connector 1 and female connector 2 have filter screens 6 slidably installed inside along the axial direction. The filter screens 6 are made of 304 stainless steel with a pore size of 20-50μm. The outer side of each filter screen 6 is fixed with an installation ring, and the outer side of the installation ring is in contact with the inner wall of male connector 1 and female connector 2 respectively. A polytetrafluoroethylene sealing gasket with a thickness of 0.3-0.5mm is pasted on the outer side of the installation ring to ensure a seal and low sliding resistance. Both male connector 1 and female connector 2 are equipped with a sewage discharge mechanism 7 at the bottom.

[0033] A limiting mechanism 8 is provided between the outer side of the card sleeve 5 and the female head 2.

[0034] In the unconnected state, the valve cores 3 inside the male connector 1 and female connector 2 seal the ends of the male connector 1 and female connector 2 respectively under the action of the spring. At this time, the filter screen 6 is attached to the partition plate in the middle of the male connector 1 and female connector 2. After the male connector 1 and female connector 2 are connected, the position of the retaining sleeve 5 is locked by the limiting mechanism 8 to prevent the retaining sleeve 5 from moving along the axial direction of the female connector 2. After connection, the filter screen 6 slides and separates from the partition plate along with the guide rod 4, and at the same time blocks the top of the sewage discharge mechanism 7, preventing the discharge of impurities in the connected state, effectively preventing the leakage of hydraulic oil during use. Only when the male connector 1 and female connector 2 are separated, the spring controls the valve core 3 to reset, releasing the obstruction of the sewage discharge mechanism 7. At the same time, when the filter screen 6 resets quickly, it will vibrate when it comes into contact with the partition plate, shaking off some impurities from the surface. Then, the sewage discharge mechanism 7 is positioned downwards and opened to clean the impurities.

[0035] Example 2

[0036] The solution in Example 1 will be further described below with reference to its specific working method.

[0037] like Figure 3As shown, in a preferred embodiment, based on the above method, the sewage discharge mechanism 7 further includes a groove 701, a plug 702, a first tension spring 703, a slide rod 704, a guide channel 705, and a drainage assembly. The groove 701 is formed at the bottom of the male head 1 and the female head 2. The plug 702 is vertically slidably disposed inside the groove 701. The fitting clearance between the outer side of the plug 702 and the inner wall of the groove 701 should be controlled at 0.05-0.1mm. An O-ring is used for sealing. The bottom of the plug 702 and the groove 701... A first tension spring 703 is fixedly installed between the inner bottom ends. The diameter of the first tension spring 703 is 0.8-1.2mm, the free length is 20-30mm, and the preload is set to 10-15N to ensure that the block 702 fits tightly against the top of the guide groove 705 when not discharging impurities. A slide rod 704 is vertically fixed at the middle position of the bottom of the block 702. The bottom end of the slide rod 704 extends to the bottom of the male head 1 and the female head 2. A guide groove 705 is opened at the bottom of the groove 701, and a flow guiding component is provided at the bottom of the guide groove 705.

[0038] After the male connector 1 and the female connector 2 are connected, the filter screen 6 is located on top of the block 702, which hinders the movement of the block 702. It is impossible to clean the impurities inside the male connector 1 and the female connector 2 while they are connected. Only when the male connector 1 and the female connector 2 are separated, the filter screen 6 adheres to the partition, which releases the obstruction to the block 702. At the same time, when the filter screen 6 is reset, it hits the partition, which can also shake off some of the impurities on the surface. Then, the block 702 is moved upward by the slide rod 704 and the first tension spring 703 is stretched. The hydraulic oil, along with the impurities, is discharged from the inside of the guide groove 705. After the impurities are removed, the slide rod 704 is released, and the block 702 is reset under the tension of the first tension spring 703.

[0039] like Figure 3 As shown, in a preferred embodiment, based on the above method, the flow-guiding assembly further includes a flow guide pipe 706 and a sealing cap 707. The flow guide pipe 706 is installed at the bottom end of the flow guide groove 705. The bottom end of the flow guide pipe 706 is provided with a threaded interface. The sealing cap 707 is provided on the outside of the threaded interface. When discharging impurities, a container can be connected to the bottom end of the flow guide pipe 706 to collect impurities and lubricating oil.

[0040] like Figure 3 As shown, in a preferred embodiment, based on the above method, the block 702 is further T-shaped, and the bottom end of the block 702 is attached to the top end of the guide groove 705. The block 702 can not only seal the groove 701, but also block the guide groove 705, thus improving the sealing effect during use.

[0041] like Figure 4As shown, in a preferred embodiment, based on the above method, the limiting mechanism 8 further includes a sliding hole 801, a rod 802, a pressure cap 803, a second tension spring 804, and an annular groove 805. The sliding hole 801 is formed on the surface of the sleeve 5. The rod 802 is vertically installed inside the sliding hole 801. The pressure cap 803 is fixed to the top of the rod 802. The bottom end of the pressure cap 803 is in contact with the surface of the sleeve 5. The second tension spring 804 is fixed between the bottom end of the pressure cap 803 and the outer side of the sleeve 5. An annular groove 805 that mates with the rod 802 is formed on the outer side of the female head 2.

[0042] When male connector 1 and female connector 2 are connected, the pressure cap 803 and the insertion rod 802 need to be pulled upwards. The insertion rod 802 is pulled out from the inside of the annular groove 805. Then, the ferrule 5 is dragged to move towards the rear end of female connector 2. After male connector 1 and female connector 2 are connected, the ferrule 5 is released. The spring inside the ferrule 5 is used to push it back quickly. At the same time, when the insertion rod 802 is at the top of the annular groove 805, the second tension spring 804 controls the insertion rod 802 to reset and insert it into the inside of the annular groove 805, which axially limits the ferrule 5 and improves the stability of the ferrule 5.

[0043] like Figure 2 As shown, in a preferred embodiment, based on the above method, the outer side of the pressure cap 803 is evenly provided with anti-slip texture along the circumferential direction, and the bottom end of the insertion rod 802 is arc-shaped. The anti-slip texture on the pressure cap 803 makes it easy to pull up, and the arc-shaped design of the bottom end of the insertion rod 802 reduces the wear of the bottom end.

[0044] Example 3

[0045] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0046] In the unconnected state, the valve cores 3 inside the male connector 1 and female connector 2 seal the ends of the male connector 1 and female connector 2 respectively under the action of the spring. At this time, the filter screen 6 is attached to the partition plate at the middle position of the male connector 1 and female connector 2. When the male connector 1 and female connector 2 are connected, the pressure cap 803 and the insertion rod 802 need to be pulled up. The insertion rod 802 is pulled out from the inside of the annular groove 805, and then the ferrule 5 is dragged to move towards the rear end of the female connector 2. After the male connector 1 and female connector 2 are connected, the ferrule 5 is released. Using the pushing force applied by the spring inside the ferrule 5, it is quickly reset. At the same time, when the insertion rod 802 is at the top of the annular groove 805, the second tension spring 804 controls the insertion rod 802 to reset and insert into the inside of the annular groove 805, thus pushing the ferrule 5. The axial limiting mechanism improves the stability of the ferrule 5. After connection, the filter screen 6 slides and separates from the partition along with the guide rod 4. At the same time, the filter screen 6 is located on top of the block 702, which hinders the movement of the block 702 and makes it impossible to clean the impurities inside the male head 1 and female head 2 while connected. Only after the male head 1 and female head 2 are separated, the filter screen 6 adheres to the partition, releasing the obstruction to the block 702. At the same time, the filter screen 6 hits the partition when resetting, which can also shake off some of the impurities on the surface. Then, the block 702 is moved upward by the slide rod 704, and the hydraulic oil, along with the impurities, is discharged from the inside of the guide groove 705. In addition, the container can be connected to the bottom end of the guide pipe 706 to collect the impurities and lubricating oil.

[0047] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A quick-release hydraulic pipeline connection device, comprising a male connector (1), a female connector (2) inserted into and installed at the end of the male connector (1), a valve core (3) slidably disposed inside the male connector (1) and the female connector (2), a guide rod (4) fixedly installed at the inner end of the valve core (3), and a ferrule (5) slidably disposed at the end of the female connector (2); Its features are: The male head (1) and the female head (2) are both slidably installed with filter screens (6) along the axial direction. The outer side of the filter screens (6) is fixed with mounting rings, and the outer side of the mounting rings is respectively attached to the inner wall of the male head (1) and the female head (2). The bottom of the male head (1) and the female head (2) are both provided with sewage discharge mechanisms (7). A limiting mechanism (8) is provided between the outer side of the ferrule (5) and the female head (2).

2. The quick-release hydraulic pipeline connection device according to claim 1, characterized in that: The sewage discharge mechanism (7) includes a groove (701), a block (702), a first tension spring (703), a slide rod (704), a guide channel (705), and a drainage component. The groove (701) is located at the bottom of the male head (1) and the female head (2). The block (702) is vertically slidably disposed inside the groove (701). The first tension spring (703) is fixedly installed between the bottom of the block (702) and the inner bottom end of the groove (701). The slide rod (704) is vertically fixed at the middle position of the bottom of the block (702). The bottom end of the slide rod (704) extends to the bottom of the male head (1) and the female head (2). The bottom of the groove (701) is provided with a guide channel (705), and the bottom of the guide channel (705) is provided with a drainage component.

3. The quick-release hydraulic pipeline connection device according to claim 2, characterized in that: The drainage assembly includes a drainage tube (706) and a sealing cap (707). The drainage tube (706) is installed at the bottom end of the drainage channel (705). The bottom end of the drainage tube (706) is provided with a threaded interface, and the sealing cap (707) is provided on the outside of the threaded interface.

4. The quick-release hydraulic pipeline connection device according to claim 2, characterized in that: The block (702) is T-shaped, and the bottom end of the block (702) is attached to the top of the guide channel (705).

5. The quick-release hydraulic pipeline connection device according to claim 1, characterized in that: The limiting mechanism (8) includes a sliding hole (801), a rod (802), a pressure cap (803), a second tension spring (804), and an annular groove (805). The sliding hole (801) is opened on the surface of the sleeve (5). The rod (802) is vertically installed inside the sliding hole (801). The pressure cap (803) is fixed at the top of the rod (802). The bottom end of the pressure cap (803) is in contact with the surface of the sleeve (5). The second tension spring (804) is fixed between the bottom end of the pressure cap (803) and the outer side of the sleeve (5). An annular groove (805) that mates with the rod (802) is opened on the outer side of the female head (2).

6. The quick-release hydraulic pipeline connection device according to claim 5, characterized in that: The outer side of the cap (803) is evenly provided with anti-slip texture along the circumferential direction, and the bottom end of the insert (802) is arc-shaped.

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