A throttling device for hydraulic cylinder of hydraulic industry

Abstract

The utility model belongs to the field of oil cylinder throttling equipment, concretely is a kind of throttling device for hydraulic oil cylinder for hydraulic industry, including valve body and valve core, the right outer arc surface is equipped with the thread groove b for connecting oil cylinder, the left side of valve core is equipped with thread groove a, the thread groove a is threadedly connected in the left side inner wall of valve body, the left end of valve core is equipped with operating groove, the outside thread groove a is threadedly connected with nut, the left side of valve body is provided with auxiliary fixing assembly, the outside of valve core is connected in the inner wall of valve body and is movably connected. The utility model is threadedly connected with the left side inner wall of valve body by the thread groove a of valve core left side, and cooperate nut fixed, while setting auxiliary fixing assembly, wherein the plug-in piece of bottom ring and the plug-in slot of fixed ring on nut are engaged, can effectively enhance the stability of valve core and valve body connection, prevent the looseness caused by hydraulic action, improve the reliability of device whole, while simple structure maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder throttling equipment, specifically a throttling device for hydraulic cylinders in the hydraulic industry. Background Technology

[0002] In the hydraulic industry, hydraulic cylinders are crucial actuators, and their performance directly affects the stability and accuracy of the entire hydraulic system. Throttling devices, as key components for controlling the flow rate of hydraulic cylinders, play a vital role in regulating cylinder operating speed and stabilizing pressure.

[0003] The throttling devices for hydraulic cylinders in the prior art often have the following problems during long-term use: under the continuous pressure of hydraulic oil, the connection between the valve core and the valve body is prone to loosening, which leads to a decrease in the throttling adjustment accuracy and affects the normal operation of the hydraulic cylinder. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by using a method in which the left side of the valve core is threaded to the inner wall of the left side of the valve body through a threaded groove a, and is fixed with a nut. At the same time, an auxiliary fixing component is set to make the plug of the bottom ring engage with the plug groove of the fixing ring on the nut. This design provides a throttling device for hydraulic cylinders in the hydraulic industry, which solves the problem that "the connection between the valve core and the valve body in the existing technology is not stable enough, and it is easy to loosen under the continuous pressure of hydraulic oil, resulting in a decrease in throttling adjustment accuracy".

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] A throttling device for hydraulic cylinders in the hydraulic industry includes a valve body and a valve core. The right outer arc surface of the valve body has a threaded groove b for connecting to the cylinder. The left side of the valve core has a threaded groove a, which is threaded to the left inner wall of the valve body. The left end of the valve core has an operating groove. A nut is threaded to the outer side of the threaded groove a. An auxiliary fixing component is provided on the left side of the valve body. The outer side of the valve core is movably connected to the inner wall of the valve body. The middle outer side of the valve core has a mounting groove. A piston ring is provided on the inner wall of the mounting groove, and the piston ring is piston-connected to the inner wall of the valve body.

[0007] Preferably, the auxiliary fixing component includes a bottom ring and a plug-in component. The bottom ring is fixedly connected to the left side of the valve body, and the plug-in component is fixedly connected to the left side of the bottom ring with the axis of the bottom ring as the center. A fixing ring is fixedly connected to the right side of the nut, and a plug-in groove is provided around the right side of the fixing ring. The plug-in component is engaged with the plug-in groove.

[0008] Preferably, the connector is arc-shaped, and the connector and the fixing ring are at the same center. The left outer arc surface of the connector is provided with an arc-shaped protrusion, and the arc-shaped protrusion of the connector is engaged with the inner wall of the connector groove.

[0009] Preferably, the right end arc surface of the valve core in the insertion slot is inclined.

[0010] Preferably, the outer middle part of the valve body is recessed on the left side near the threaded groove b, and a sealing ring is provided in the recess of the valve body.

[0011] Preferably, the diameter of the right part of the valve core is larger than the diameter of the left part.

[0012] Preferably, the bottom ring is configured as a circular ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model connects the valve core to the inner wall of the valve body via a threaded groove a on the left side and a nut for fixing. An auxiliary fixing component is also provided, in which the bottom ring's insert engages with the insert groove of the fixing ring on the nut. This effectively enhances the stability of the connection between the valve core and the valve body, prevents loosening caused by hydraulic pressure, improves the overall reliability of the device, and has a simple structure and low maintenance cost.

[0015] 2. A piston ring is installed in the mounting groove on the outer side of the valve core of this utility model. The piston ring is connected to the piston on the inner wall of the valve body. Combined with the sealing ring in the recessed part of the valve body, the sealing performance of the device can be significantly improved, the leakage of hydraulic oil can be reduced, and the throttling effect can be ensured. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0017] Figure 2 This is a three-dimensional cross-sectional view of the overall device in this utility model;

[0018] Figure 3 This is a three-dimensional structural disassembly diagram of the auxiliary fixing component in this utility model;

[0019] Figure 4 This utility model Figure 2 A magnified schematic diagram of the three-dimensional structure at point A in the middle.

[0020] Legend:

[0021] 1. Valve body; 2. Valve core; 3. Sealing ring; 4. Thread groove a; 5. Operating groove; 6. Thread groove b; 7. Mounting groove; 8. Piston ring; 9. Nut; 10. Auxiliary fixing assembly; 101. Bottom ring; 102. Insertion connector; 103. Fixing ring; 104. Insertion groove. Detailed Implementation

[0022] Reference Figure 1 - Figure 4 A throttling device for hydraulic cylinders in the hydraulic industry includes a valve body 1 and a valve core 2. The valve body 1 serves as the main frame of the throttling device, with a regular hexagonal shape on the left side to provide a mounting base and space for other components. It is used for installation in the oil circuit of the hydraulic cylinder. The outer arc surface of the right side of the valve body 1 has a threaded groove b6 for connecting to the cylinder, which is used to connect and fix the entire throttling device to the hydraulic cylinder or other hydraulic components, ensuring the installation stability of the device in the hydraulic system. The valve core 2 achieves the throttling function through relative movement with the valve body 1. The valve body 1 and valve core 2 are... The surface is chrome-plated to form a uniform and dense chrome plating layer. This plating layer not only significantly improves the wear resistance and corrosion resistance of the components and reduces the wear of the surface by impurities in the hydraulic oil and the corrosive effect of the hydraulic oil itself, but also reduces the coefficient of friction between the valve core 2 and the valve body 1, making the valve core 2 smoother during adjustment. A threaded groove a4 is provided on the left side of the valve core 2, which is threaded to the inner wall of the left side of the valve body 1. The threaded groove a4 is the key structure for the movable adjustment of the valve core 2 and the valve body 1. The position of the valve core 2 within the valve body 1 can be adjusted through the threaded engagement. This allows for adjustment of the throttling degree and provides a threaded connection base for the nut 9. An operating groove 5 is provided at the left end of the valve core 2, facilitating the insertion and rotation of tools to adjust the relative position of the valve core 2 and valve body 1, thus simplifying the operation of the throttling device. A nut 9 is threaded onto the outer side of the threaded groove a4, which, when tightened, further secures the valve core 2 to the valve body 1, preventing it from loosening due to hydraulic oil pressure and enhancing the stability of the connection between the valve core 2 and valve body 1. An auxiliary fixing component 10 is provided on the left side of the valve body 1, through which the outer side of the valve core 2 is movably connected. The inner wall of the valve body 1 has an installation groove 7 around the middle outer side of the valve core 2, which is specifically used to install the piston ring 8. This groove provides a fixed position for the piston ring 8, ensuring that the piston ring 8 can stably cooperate with the inner wall of the valve body 1 to perform a sealing function. The inner wall of the installation groove 7 is provided with the piston ring 8, which is connected to the inner wall of the valve body 1. Its main function is to enhance the sealing performance between the valve core 2 and the valve body 1, prevent hydraulic oil from leaking in the gap between the valve core 2 and the inner wall of the valve body 1, ensure the stability of the throttling effect, and reduce the wear between the valve core 2 and the valve body 1. The piston ring 8 is connected to the inner wall of the valve body 1.

[0023] In this embodiment, during use, the device is connected to the hydraulic cylinder's oil circuit via the threaded groove b6 on the right side of the valve body 1. The sealing ring 3, located in the recessed area in the middle of the valve body 1, enhances the sealing performance with external connections, preventing hydraulic oil leakage. The valve core 2 is the core throttling component. Its left side is threadedly connected to the inner wall of the left side of the valve body 1 via the threaded groove a4. The valve core 2 can be rotated using the operating groove 5 at the left end to adjust its axial position within the valve body 1.

[0024] The right side of valve core 2 has a larger diameter than the left side, and the right end is an inclined arc surface. As the position of valve core 2 changes, the flow cross-sectional area formed by it and the oil passage of the hydraulic cylinder changes, thereby adjusting the hydraulic oil flow rate: when valve core 2 moves to the right, the flow cross-sectional area decreases and the flow rate decreases; when it moves to the left, the cross-sectional area increases and the flow rate increases.

[0025] A piston ring 8 is provided in the mounting groove 7 in the middle of the valve core 2. The piston ring 8 fits tightly against the inner wall of the valve body 1, which enhances the seal between the valve core 2 and the valve body 1, prevents hydraulic oil from leaking from the gap between them, and ensures the throttling accuracy.

[0026] To prevent the valve core 2 from loosening due to hydraulic pressure, a nut 9 is screwed onto the outside of the threaded groove a4. After tightening, the position of the valve core 2 can be fixed. At the same time, the auxiliary fixing component 10 on the left side of the valve body 1 is further reinforced: the arc-shaped plug 102 on the bottom ring 101 is engaged with the plug groove 104 of the fixing ring 103 behind the nut 9 through the arc-shaped protrusion, forming a circumferential limit, ensuring that the valve core 2 is stably connected to the valve body 1, ensuring that the device works continuously and reliably in the hydraulic system, with a simple structure and low maintenance cost.

[0027] As a preferred embodiment, the auxiliary fixing assembly 10 includes a bottom ring 101 and a connector 102. The bottom ring 101 is fixedly connected to the left side of the valve body 1, providing a mounting base for the connector 102 and stably connecting the connector 102 to the valve body 1. The connector 102 is fixedly connected to the left side of the bottom ring 101 with the axis of the bottom ring 101 as the center. The connector 102 is made of a flexible metal material and multiple sets are provided. It can be snapped into the connector groove 104, and cooperates with the fixing ring 103 to further enhance the firmness of the connection between the valve core 2 and the valve body 1. To prevent the nut 9 from loosening, a fixing ring 103 is fixedly connected to the right side of the nut 9. The insertion groove 104 on the right side of the ring 103 engages with the insertion piece 102. The locking action restricts the loosening of the nut 9, helps to fix the valve core 2, and improves the stability of the device under hydraulic action. The fixing ring 103 has an insertion groove 104 around its right side, which engages with the arc-shaped protrusion of the insertion piece 102 to achieve relative fixation between the fixing ring 103 and the bottom ring 101, thereby helping to fix the nut 9 and the valve core 2 and prevent the components from loosening. The insertion piece 102 engages with the insertion groove 104.

[0028] As a preferred method, the connector 102 is arc-shaped, and the connector 102 and the fixing ring 103 are at the same center, ensuring that the connector 102 can be accurately inserted into the inner wall of the connector groove 104. The outer arc surface on the left side of the connector 102 is provided with an arc-shaped protrusion, and the arc-shaped protrusion of the connector 102 is engaged with the inner wall of the connector groove 104.

[0029] As a preferred method, the right end arc surface of the valve core 2 in the plug slot 104 is inclined. The inclined setting can reduce the turbulence and resistance generated by the hydraulic oil during the flow process. At the same time, the increased fluid resistance forms back pressure, which can suppress the influence of load fluctuation on the movement of the oil cylinder, thereby helping to maintain the stability of the system pressure.

[0030] As a preferred embodiment, the outer middle part of the valve body 1 is recessed near the left side of the threaded groove b6. A sealing ring 3 is provided in the recess of the valve body 1, which can enhance the sealing performance of the oil circuit connection between the valve body 1 and the oil cylinder, prevent hydraulic oil from leaking from the outside of the valve body 1, and ensure the pressure stability of the hydraulic system.

[0031] As a preferred method, the diameter of the right side of the valve core 2 is larger than that of the left side, which can change the flow cross-sectional area of ​​the oil circuit, thereby regulating the flow rate of hydraulic oil.

[0032] As a preferred embodiment, the bottom ring 101 is configured as an annular shape.

Claims

1. A throttling device for hydraulic cylinders in the hydraulic industry, characterized in that: The valve body (1) includes a valve body (1) and a valve core (2). The right outer arc surface of the valve body (1) is provided with a threaded groove b (6) for connecting to the oil cylinder. The left side of the valve core (2) is provided with a threaded groove a (4). The threaded groove a (4) is threadedly connected to the left inner wall of the valve body (1). The left end of the valve core (2) is provided with an operating groove (5). The outer side of the threaded groove a (4) is threadedly connected with a nut (9). The left side of the valve body (1) is provided with an auxiliary fixing component (10). The outer side of the valve core (2) is connected to the inner wall of the valve body (1). The middle outer side of the valve core (2) is surrounded by an installation groove (7). The inner wall of the installation groove (7) is provided with a piston ring (8). The piston ring (8) is piston-connected to the inner wall of the valve body (1).

2. A throttling device for hydraulic cylinders in the hydraulic industry according to claim 1, characterized in that: The auxiliary fixing component (10) includes a bottom ring (101) and a plug (102). The bottom ring (101) is fixedly connected to the left side of the valve body (1). The plug (102) is fixedly connected to the left side of the bottom ring (101) with the axis of the bottom ring (101) as the center. A fixing ring (103) is fixedly connected to the right side of the nut (9). A plug groove (104) is provided around the right side of the fixing ring (103). The plug (102) is engaged with the plug groove (104).

3. A throttling device for hydraulic cylinders in the hydraulic industry according to claim 2, characterized in that: The connector (102) is arc-shaped and the connector (102) and the fixing ring (103) are at the same center. The outer arc surface on the left side of the connector (102) is provided with an arc-shaped protrusion, and the arc-shaped protrusion of the connector (102) is engaged with the inner wall of the connector groove (104).

4. A throttling device for hydraulic cylinders in the hydraulic industry according to claim 2, characterized in that: The right end arc surface of the valve core (2) in the plug groove (104) is inclined.

5. A throttling device for hydraulic cylinders in the hydraulic industry according to claim 1, characterized in that: The valve body (1) has a recessed outer part near the left side of the threaded groove b (6), and a sealing ring (3) is provided in the recessed part of the valve body (1).

6. A throttling device for hydraulic cylinders in the hydraulic industry according to claim 1, characterized in that: The diameter of the right part of the valve core (2) is greater than the diameter of the left part.

7. A throttling device for hydraulic cylinders in the hydraulic industry according to claim 2, characterized in that: The bottom ring (101) is configured as a circular ring.

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