Constant flow pump capable of providing stable output

Abstract

The utility model discloses a constant flow pump capable of providing stable output, which comprises a valve core, a plurality of safety valve adjusting gaskets are arranged on a valve core plug of the valve core, and the valve core and the valve core plug are arranged on a valve body of the constant flow pump. The stability of the output pressure of the constant flow pump can be controlled, the adaptability of the constant flow pump and the whole system is facilitated, and the stability of the whole system is met; meanwhile, the gasket for adjusting the pressure is adjusted to the valve core plug from the interior of the valve core, so that the pressure is more convenient to adjust.

Description

Technical Field

[0001] The utility model relates to a field, in particular to a constant current pump providing stable output. Background Art

[0002] Many hydraulic steering systems in agricultural machinery utilize constant-flow pumps. Several methods exist for regulating the pump's output pressure. The constant-flow valve's pressure can sometimes be unstable, causing the entire system to experience jitter at low flow rates. Therefore, modifications to the valve core and body structure are necessary to improve the pump's output stability while retaining the advantages of conventional constant-flow valves.

[0003] The output stability of conventional constant flow pumps, including pressure and flow, is mainly controlled by the oblique holes of the valve core and valve body. The valve core controls the output pressure by increasing or decreasing the number of gaskets on the safety valve core inside the valve core. The stability of the output flow is mainly controlled by the size of the oblique hole on the valve body. Since the number of additional gaskets varies depending on the working conditions of the working components, the number of additional gaskets may also be different, and the flatness of each gasket is different. When installed on the safety valve core inside the valve core, the flatness of the gasket may be worse, and ultimately the pressure regulating spring inside the valve core is tilted inside, resulting in unstable output pressure. The output flow stability of the constant flow pump is mainly controlled by the oblique hole on the valve body. Conventional constant flow pumps mainly add oblique holes directly on the valve body, which results in the actual working conditions of the working components not being able to continuously feedback stable pressure through the oblique holes of the valve body.

[0004] Therefore, it is necessary to develop a new type of constant flow pump structure to maintain the stability of the output pressure. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, the utility model provides a constant flow pump that provides stable output, which can not only control the stability of the output pressure of the constant flow pump, but also facilitate the adaptability of the constant flow pump to the entire system, and meet the stability of the entire system; at the same time, the gasket for adjusting the pressure is adjusted from the inside of the valve core to the valve core plug, which is more convenient for pressure adjustment.

[0006] Technical solution: The utility model provides a constant flow pump that provides stable output, which is characterized by comprising a valve core, a valve core plug of the valve core is provided with a plurality of safety valve adjustment gaskets, and the valve core and the valve core plug are installed on the valve body of the constant flow pump.

[0007] Wherein, the valve core plug is installed on the valve core through threads.

[0008] Wherein, the valve core is provided with a return spring.

[0009] Wherein, a safety valve core and a safety valve spring are arranged inside the valve core.

[0010] Wherein, the valve body is provided with a throttling plug, a valve body plug 1 and a valve body plug 2.

[0011] Wherein, the valve body plug is installed on the valve body through threads.

[0012] Wherein, the second valve body plug is installed on the valve body through threads.

[0013] Beneficial effects: Compared with the existing technology, the utility model has the following significant advantages: The utility model adopts the method of adjusting the pressure gasket from the conventional safety valve core placed inside the valve core to the plug, and controls the pressure by adjusting the thickness of the gasket between the plug and the valve core. When the pressure is lower than the required pressure value, the thickness of the gasket is reduced to increase the pressure. A throttling plug is added to the valve body, and the stability of the system is adapted by adjusting the size of the throttling hole on the throttling plug. It can not only control the stability of the output pressure of the constant flow pump, but also facilitate the adaptability of the constant flow pump to the entire system, thereby meeting the stability of the entire system. At the same time, the pressure adjustment gasket is adjusted from the inside of the valve core to the valve core plug, which makes it more convenient to adjust the pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a structural diagram of the valve core in the prior art;

[0016] Figure 3 This is a structural diagram of the valve core of the utility model;

[0017] In the figure, 1 is the valve core plug; 2 is the safety valve adjusting gasket; 3 is the throttling plug; 4 is the safety valve core; 5 is the safety valve spring; 6 is the valve core; 7 is the valve body plug 1; 8 is the return spring; 9 is the valve body plug 2; and 10 is the valve body. DETAILED DESCRIPTION

[0018] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0019] The present invention provides a constant flow pump with a stable output, including a valve core 6. A plurality of safety valve adjustment gaskets 2 are provided on a valve core plug 1 of the valve core 6. The valve core 6 and the valve core plug 1 are mounted on a valve body 10 of the constant flow pump. The valve core plug 1 is threadedly mounted on the valve core 6. A return spring 8 is provided on the valve core 6. A safety valve core 4 and a safety valve spring 5 are provided within the valve core 6. The valve body 10 is provided with a throttle plug 3, a valve body plug 1 7, and a valve body plug 2 9. The valve body plug 1 7 is threadedly mounted on the valve body 10. The valve body plug 2 9 is also threadedly mounted on the valve body 10.

[0020] During use, first thread the valve body plug 2 9 onto the valve body 10, install the valve core 6 inside the valve body 10, install the safety valve spring 5 into the valve core 6, install the safety valve adjustment gasket 2 on the valve core plug 1, and then thread the valve core plug 1 onto the valve core 6. Then place the return spring 8 on the valve core 6, and finally thread the valve body plug 1 7 onto the valve body 10. Different sizes of throttling plugs 3 can be installed on the valve body 10 to adapt to the customer's system.

[0021] When the pressure needs to be increased, the number of safety valve adjustment gaskets 2 is reduced to increase the pressure of the safety valve. When the pressure needs to be reduced, the number of safety valve adjustment gaskets 2 is increased to reduce the pressure of the safety valve. At the same time, the valve core 6 structure has added guidance to facilitate smooth movement inside the valve body 10.

[0022] The present invention employs a method of adjusting the pressure by shifting the gasket for adjusting pressure from the conventional safety valve core 4 placed inside the valve core 6 to the plug. The pressure is controlled by adjusting the thickness of the gasket between the plug and the valve core 6. When the pressure falls below the desired value, the gasket thickness is reduced to increase the pressure. A throttle plug 3 is added to the valve body 10, and the stability of the system is adjusted by adjusting the size of the throttle hole on the throttle plug 3. This not only controls the stability of the constant flow pump's output pressure, but also facilitates the compatibility of the constant flow pump with the entire system, ensuring the stability of the entire system. Simultaneously, the pressure adjustment gasket is shifted from the interior of the valve core 6 to the valve core plug 1, making pressure regulation more convenient.

Claims

1. A constant current pump providing stable output, characterized in that: The invention comprises a valve core (6), a valve core plug (1) of the valve core (6) is provided with a plurality of safety valve adjusting gaskets (2), and the valve core (6) and the valve core plug (1) are installed on the valve body (10) of the constant flow pump; the valve core plug (1) is installed on the valve core (6) by means of threads; the valve core (6) is provided with a return spring (8); the valve core (6) is provided with a safety valve core (4) and a safety valve spring (5) inside the valve core (6); the valve body (10) is provided with a throttle plug (3), a valve body plug 1 (7) and a valve body plug 2 (9); the valve body plug 1 (7) is installed on the valve body (10) by means of threads; the valve body plug 2 (9) is installed on the valve body (10) by means of threads.

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