A hydraulic system flow control structure

Abstract

The utility model provides a kind of hydraulic system flow control structure, belong to flow control structure technical field, including shell, both fixedly arranged baffle in shell, and connecting rod is limit slidingly arranged along vertical direction;Oil storage cavity and oil outlet cavity are equipped in shell, first sealing float and second sealing float are limit slidingly arranged along vertical direction in oil storage cavity, first sealing float is fixedly connected with second sealing float by first spring;Oil outlet pipe that is communicated with oil storage cavity is fixedly arranged in oil outlet cavity, sealing block is set in oil outlet pipe and is limit slidingly penetrated and arranged along vertical direction;One end of connecting rod is fixedly connected with first sealing float, and the other end is fixedly connected with sealing block;Oil inlet pipe and pressure relief pipe are fixedly arranged on shell, and oil inlet pipe and pressure relief pipe are communicated with oil storage cavity, and second sealing float drives plugging pressure relief pipe.When connecting rod and the top inner wall of shell abut, with the pressure increase in oil storage cavity, it will automatically carry out pressure relief operation, to avoid the occurrence of explosion cylinder phenomenon.

Description

Technical Field

[0001] This utility model belongs to the technical field of flow control structure, specifically relating to a flow control structure for a hydraulic system. Background Technology

[0002] A hydraulic system is a transmission system that uses a closed liquid (usually hydraulic oil) as its working medium, utilizing the pressure of the liquid to transmit power and achieve energy conversion and control. Its core principle is Pascal's Law, which converts mechanical energy into hydraulic energy and then back into mechanical energy for output. Its main function is to increase the force by changing the pressure, thereby driving mechanical actuators to complete specific tasks.

[0003] A hydraulic power unit is the power source device in a hydraulic system, a subset or core component of the system, primarily responsible for power supply and basic regulation. The hydraulic power unit is responsible for providing hydraulic oil with specific pressure, flow rate, and direction, converting mechanical energy into hydraulic energy to provide a stable power source for the system. During operation, the flow rate in the hydraulic circuit generally needs to be controlled to enable the hydraulic system to perform various prescribed actions; therefore, a hydraulic system flow control structure is urgently needed.

[0004] A patent with publication number CN213628227U discloses a hydraulic station oil circuit flow control device, which includes a body, an oil inlet, an oil outlet pipe, an oil chamber, a float, a crossbeam, a moving rod, and a sealing gasket. During use, when the oil volume in the oil chamber increases, the oil level rises, causing the float to move upwards. The float, through the crossbeam, moves the moving rod and the sealing gasket connected to the moving rod upwards, opening the oil outlet pipe and allowing oil to flow out. When the oil volume in the oil chamber decreases, the oil level drops, causing the float to move downwards. The float, through the crossbeam, moves the moving rod and the sealing gasket connected to the moving rod downwards, sealing the oil outlet and stopping oil flow.

[0005] The above-mentioned solution utilizes the buoyancy of the float to control the oil output from the outlet pipe, thereby reducing production costs. However, in this solution, once the oil volume in the oil chamber reaches a certain level, the crossbeam will abut against the inner top wall of the vessel. After this abutment, as the oil volume in the oil chamber gradually increases, the position of the sealing gasket will no longer slide, and the actual opening of the outlet pipe will no longer change. This causes the pressure in the oil chamber to gradually increase, potentially leading to cylinder failure, making it unsuitable for practical use. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model provides a flow control structure for a hydraulic system.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A flow control structure for a hydraulic system includes a housing. Inside the housing, a partition is fixedly installed, and a connecting rod is slidably positioned vertically. An elastic element is provided between the connecting rod and the partition. The housing contains an oil storage chamber and an oil outlet chamber. A first sealing float and a second sealing float are slidably positioned vertically within the oil storage chamber, and are fixedly connected by a first spring. An oil outlet pipe, communicating with the oil storage chamber, is fixedly installed in the oil outlet chamber, and a sealing block is slidably installed vertically through the oil outlet pipe. One end of the connecting rod is fixedly connected to the first sealing float, and the other end is fixedly connected to the sealing block. An oil inlet pipe and a pressure relief pipe are fixedly installed on the housing, both communicating with the oil storage chamber. The second sealing float drives and blocks the pressure relief pipe.

[0009] Furthermore, the elastic element includes a second spring, a second guide rod is fixedly disposed on the top of the partition, the top of the second guide rod is fixedly connected to the top inner wall of the housing, and a connecting rod is slidably sleeved on the outer surface of the second guide rod; a second spring is sleeved on the outer surface of the second guide rod, the top of the second spring is fixedly connected to the bottom of the connecting rod, and the bottom of the second spring is fixedly connected to the top of the partition.

[0010] Furthermore, the top of the first spring is fixedly connected to the first sealing float, and the bottom of the first spring is fixedly connected to the second sealing float.

[0011] Furthermore, a first guide rod is fixedly installed at the bottom of the first sealing float, and the bottom of the first guide rod slides through the second sealing float and is integrally fixedly installed with a limiting block.

[0012] Furthermore, the spring constant of the first spring is greater than that of the second spring.

[0013] Furthermore, the oil storage chamber and the oil outlet chamber are located on the left and right sides of the partition.

[0014] This application has the following beneficial effects:

[0015] In use, this application utilizes a first sealing float, a second sealing float, and a first spring to adjust the degree of sealing of the oil outlet pipe by leveraging the buoyancy of the liquid, thereby controlling the oil flow and achieving flow control. Simultaneously, when the oil level in the reservoir increases to a certain point and the connecting rod abuts against the top inner wall of the housing, the increased pressure in the reservoir causes the second sealing float to slide and compress the first spring, connecting the reservoir to the hydraulic pipe and automatically releasing pressure to prevent cylinder explosion. The entire design is simple, safer to operate, and more practical for real-world use. Attached Figure Description

[0016] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

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

[0018] Figure 2 This is the overall cross-section of the utility model. Figure 1 ;

[0019] Figure 3 This is a utility model Figure 2 A magnified view of a portion of point A in the middle;

[0020] Figure 4 This is the overall cross-section of the utility model. Figure 2 .

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Housing; 2. Oil inlet pipe; 3. Oil outlet pipe; 4. Pressure relief pipe; 41. First spring; 5. First sealing float; 51. Second sealing float; 6. Connecting rod; 7. Second spring; 8. Second guide rod; 9. Partition plate; 10. Sealing block; 11. Oil storage chamber; 12. First guide rod; 13. Limiting block; 14. Oil outlet chamber. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] like Figures 1-4 As shown, the technical solution adopted by this utility model is as follows: a hydraulic system flow control structure, including a housing 1, a partition 9 is fixedly installed inside the housing 1, and a connecting rod 6 is slidably installed in the vertical direction, and an elastic element is provided between the connecting rod 6 and the partition 9;

[0025] The elastic element includes a second spring 7, a second guide rod 8 is fixedly installed on the top of the partition 9, the top of the second guide rod 8 is fixedly connected to the top inner wall of the housing 1, and the connecting rod 6 is slidably sleeved on the outer surface of the second guide rod 8; the second spring 7 is sleeved on the outer surface of the second guide rod 8, the top of the second spring 7 is fixedly connected to the bottom of the connecting rod 6, and the bottom of the second spring 7 is fixedly connected to the top of the partition 9.

[0026] The housing 1 is provided with an oil storage chamber 11 and an oil outlet chamber 14, which are located on the left and right sides of the partition 9.

[0027] The oil storage chamber 11 is equipped with a first sealing float 5 and a second sealing float 51 that are slidably positioned in the vertical direction. The first sealing float 5 and the second sealing float 51 are fixedly connected by a first spring 41.

[0028] Furthermore, the top of the first spring 41 is fixedly connected to the first sealing float 5, and the bottom of the first spring 41 is fixedly connected to the second sealing float 51.

[0029] Furthermore, a first guide rod 12 is fixedly installed at the bottom of the first sealing float 5, and the bottom of the first guide rod 12 slides through the second sealing float 51, and a limiting block 13 is integrally fixedly installed thereon.

[0030] Among them, an oil outlet pipe 3 connected to the oil storage chamber 11 is fixedly installed in the oil outlet chamber 14, and a sealing block 10 is installed in the top of the oil outlet pipe 3 in a vertical direction.

[0031] Furthermore, one end of the connecting rod 6 is fixedly connected to the first sealing float 5, and the other end of the connecting rod 6 is fixedly connected to the sealing block 10.

[0032] In addition, an oil inlet pipe 2 and a pressure relief pipe 4 are fixedly installed on the housing 1. Both the oil inlet pipe 2 and the pressure relief pipe 4 are connected to the oil storage chamber 11. The second sealing float 51 drives the sealing of the pressure relief pipe 4.

[0033] In addition, the spring constant of the first spring 41 is greater than that of the second spring 7.

[0034] In use, this application, through the setting of the first sealing float 5, the second sealing float 51 and the first spring 41, can use the buoyancy of the liquid to adjust the degree of sealing of the sealing block 10 on the oil outlet pipe 3, thereby controlling the oil output of the oil outlet pipe 3 to achieve the flow control function.

[0035] Meanwhile, when the oil volume in the oil storage chamber 11 increases to a certain level and the connecting rod 6 abuts against the top inner wall of the housing 1, as the pressure in the oil storage chamber 11 increases, the second sealing float 51 will slide and squeeze the first spring 41, so that the oil storage chamber 11 is connected to the pressure relief pipe 4, thereby automatically performing pressure relief operation to avoid the occurrence of cylinder explosion. The whole scheme has a simple structure, is safer to operate, and is more conducive to practical use.

[0036] Working principle: During use, when the amount of oil in the oil storage chamber 11 increases, the second sealing float 51 rises with the help of liquid buoyancy. The second sealing float 51 will push the first sealing float 5 to rise through the first spring 41. The rise of the first sealing float 5 will push the connecting rod 6 to rise, so that the connecting rod 6 slides on the surface of the second guide rod 8 and stretches the second spring 7.

[0037] At the same time, as the connecting rod 6 rises, it will also drive the sealing block 10 to rise synchronously, thereby adjusting the degree of sealing of the oil outlet pipe 3 by the sealing block 10, so as to control the oil output of the oil outlet pipe 3 and realize the flow control function.

[0038] When the amount of oil in the oil storage chamber 11 decreases, the connecting rod 6 descends due to gravity and the elastic force of the first spring 41, thereby blocking the oil outlet pipe 3 through the sealing block 10 and ending the oil discharge.

[0039] In addition, when the oil volume in the oil reservoir 11 increases to a certain level and the connecting rod 6 abuts against the top inner wall of the housing 1, as the pressure in the oil reservoir 11 increases, the second sealing float 51 will slide and squeeze the first spring 41, so that the oil reservoir 11 is connected to the pressure relief pipe 4, thereby automatically performing pressure relief operation to avoid the occurrence of cylinder explosion. The whole scheme has a simple structure, is safer to operate, and is more conducive to practical use.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flow control structure for a hydraulic system, characterized in that, The system includes a housing (1), within which a partition (9) is fixedly installed, and a connecting rod (6) is slidably installed in a vertical direction. An elastic element is provided between the connecting rod (6) and the partition (9). The housing (1) contains an oil storage chamber (11) and an oil outlet chamber (14). A first sealing float (5) and a second sealing float (51) are slidably installed in the oil storage chamber (11) in a vertical direction. The first sealing float (5) and the second sealing float (51) are fixedly connected by a first spring (41). An oil outlet pipe (3) connected to the oil storage chamber (11) is fixedly installed in the oil outlet chamber (14). A sealing block (10) is installed in the oil outlet pipe (3) in a vertical direction. One end of the connecting rod (6) is fixedly connected to the first sealing float (5), and the other end is fixedly connected to the sealing block (10). An oil inlet pipe (2) and a pressure relief pipe (4) are fixedly installed on the housing (1). Both the oil inlet pipe (2) and the pressure relief pipe (4) are connected to the oil storage chamber (11). The second sealing float (51) drives to block the pressure relief pipe (4).

2. The hydraulic system flow control structure according to claim 1, characterized in that, The elastic element includes a second spring (7), a second guide rod (8) is fixedly installed on the top of the partition (9), the top of the second guide rod (8) is fixedly connected to the top inner wall of the housing (1), and the connecting rod (6) is slidably sleeved on the outer surface of the second guide rod (8); the second spring (7) is sleeved on the outer surface of the second guide rod (8), the top of the second spring (7) is fixedly connected to the bottom of the connecting rod (6), and the bottom of the second spring (7) is fixedly connected to the top of the partition (9).

3. The hydraulic system flow control structure according to claim 1, characterized in that, The top of the first spring (41) is fixedly connected to the first sealing float (5), and the bottom of the first spring (41) is fixedly connected to the second sealing float (51).

4. The hydraulic system flow control structure according to claim 1, characterized in that, The bottom of the first sealing float (5) is fixedly provided with a first guide rod (12), the bottom of the first guide rod (12) is sealed and slides through the second sealing float (51), and a limiting block (13) is integrally fixedly provided.

5. A hydraulic system flow control structure according to claim 2, characterized in that, The elastic coefficient of the first spring (41) is greater than that of the second spring (7).

6. The hydraulic system flow control structure according to claim 1, characterized in that, The oil storage chamber (11) and the oil outlet chamber (14) are located on the left and right sides of the partition (9).

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