Intelligent high-precision hydraulic valve

Abstract

The utility model relates to the technical field of hydraulic valves, in particular to an intelligent high-precision hydraulic valve which comprises a valve shell and an intelligent temperature control module, a valve cavity is formed in the valve shell and accommodates a valve element to move, the valve element is connected with a magnetic rod, and an electromagnetic module located beside the magnetic rod is arranged in the valve shell. The intelligent temperature control module communicates with a temperature control liquid inlet pipe and a temperature control liquid outlet pipe and comprises a temperature control liquid bin and a temperature control liquid column which communicate with each other, and the temperature control liquid column penetrates through a temperature control hole formed in the valve shell. A pressure relief mechanism is further arranged in the valve shell and comprises a pressure relief piston connected with the valve shell through a tension spring, the pressure relief piston is arranged in a pressure relief cavity channel, and the pressure relief cavity channel is communicated with a pressure relief pipe located outside the valve shell. The intelligent high-precision hydraulic valve is manufactured through a high-precision machining center and is high in assembly precision and sealing performance. And the temperature control device is arranged, so that the temperature of the valve body is controlled to be reasonable during working, and the influence of thermal expansion and cold contraction is effectively weakened.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to an intelligent high-precision hydraulic valve. Background Art

[0002] As an indispensable component in the hydraulic system, the performance of hydraulic valves directly affects the stability and efficiency of the entire hydraulic system. According to their functional characteristics, they can be divided into flow valves (such as throttle valves, speed control valves, flow dividing and collecting valves), pressure valves (such as relief valves, pressure reducing valves, sequence valves, unloading valves) and directional valves (such as electromagnetic reversing valves, manual reversing valves, check valves, hydraulic control check valves), etc. Due to the effects of thermal expansion and contraction, precision-sized components are usually sensitive to temperature changes. In high-temperature environments, materials will expand, which may cause valve size changes, thereby affecting their sealing performance and flow control accuracy. On the contrary, in low-temperature environments, materials will shrink, which may also cause similar problems. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide an intelligent high-precision hydraulic valve, which has the advantages of realizing intelligent temperature control and ensuring sealing accuracy.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An intelligent high-precision hydraulic valve comprises a valve housing and an intelligent temperature control module, wherein a valve cavity is arranged in the valve housing and accommodates the movement of a valve core, the valve core is connected to a magnetic rod, and an electromagnetic module is arranged in the valve housing and is located next to the magnetic rod; the intelligent temperature control module is connected to a temperature control liquid inlet pipe and an outlet pipe, and comprises a connected temperature control liquid tank and a temperature control liquid column, and the temperature control liquid column penetrates a temperature control hole arranged on the valve housing; a pressure relief mechanism is also arranged in the valve housing, and the pressure relief mechanism comprises a pressure relief piston connected to the valve housing through a tension spring, the pressure relief piston is arranged in a pressure relief cavity, and the pressure relief cavity is connected to a pressure relief pipe located outside the valve housing.

[0006] Furthermore, a waterproof temperature sensor is provided in the temperature-controlling liquid tank or the temperature-controlling liquid column, and a connecting sleeve is provided at the end of the temperature-controlling liquid column not connected to the temperature-controlling liquid tank, and the connecting sleeve is connected to the temperature-controlling liquid outlet pipe.

[0007] Furthermore, the number of the temperature-control liquid columns is 3 to 6, which correspond one to one to the temperature-control holes, and the temperature range of the temperature-control liquid circulating in the intelligent temperature-control module is 15° C. to 45° C.

[0008] Furthermore, a return spring is arranged at one end of the valve core, and a shock-absorbing pad is arranged at the opposite end of the valve core.

[0009] Furthermore, the valve cavity is connected to a liquid inlet cavity and two liquid outlet cavities, and the pressure relief cavity is connected to the liquid inlet cavity.

[0010] Furthermore, the temperature control hole is arranged away from the valve cavity and the pressure relief cavity.

[0011] Furthermore, the connecting sleeve and the temperature-control liquid tank sandwich the valve housing.

[0012] Furthermore, the outer wall of the temperature-control liquid column is in contact with the inner wall of the temperature-control hole.

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

[0014] The intelligent high-precision hydraulic valve proposed in the utility model is manufactured by a high-precision machining center, with high assembly accuracy and strong sealing. It is equipped with a temperature control device to control the valve body at a reasonable temperature during operation, effectively reducing the influence of thermal expansion and contraction; it has a shock-absorbing function when the valve core is reset, to avoid too many vibrations causing the hydraulic valve components to loosen and the joints of the components to become larger, affecting the precision of the hydraulic valve; it is also equipped with a pressure relief mechanism to avoid the overpressure inside the cavity causing the hydraulic valve sealing accuracy to decrease. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0017] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of the intelligent temperature control module in the utility model;

[0019] Figure 5 for Figure 4 Schematic cross-section of the structure.

[0020] In the figure: 1. valve housing; 1a. electromagnetic module; 1b. temperature control hole; 2. valve core; 2a. magnetic rod; 2b. shock-absorbing pad; 2c. reset spring; 3. intelligent temperature control module; 3a. temperature control liquid tank; 3b. temperature control liquid column; 3b-1. connecting sleeve; 4. pressure relief mechanism; 4a. tension spring; 4b. pressure relief piston; 4c. pressure relief cavity; 4d. pressure relief pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] like Figure 1 to Figure 5As shown, an intelligent high-precision hydraulic valve comprises a valve housing 1 and an intelligent temperature control module 3. A valve cavity is arranged in the valve housing 1 to accommodate the movement of a valve core 2. The valve core 2 is connected to a magnetic rod 2a. An electromagnetic module 1a is arranged in the valve housing 1 and is located next to the magnetic rod 2a. A reset spring 2c is arranged at one end of the valve core 2, and a shock-absorbing pad 2b is arranged at the opposite end of the end. The electromagnetic module 1a uses magnetic force to move the valve core 2, and the reset spring 2c is used for resetting the valve core 2. The shock-absorbing pad 2b plays a shock-absorbing role during resetting to avoid vibration. Too many of them may cause the hydraulic valve components to loosen and the joints between the components to become larger, affecting the precision of the hydraulic valve; a pressure relief mechanism 4 is also arranged in the valve housing 1, and the pressure relief mechanism 4 includes a pressure relief piston 4a connected to the valve housing 1 through a tension spring 4b, and the pressure relief piston 4a is arranged in a pressure relief cavity 4c, and the pressure relief cavity 4c is connected to a pressure relief pipe 4d located outside the valve housing 1, and the valve cavity is connected to a liquid inlet cavity and two liquid outlet cavities, and the pressure relief cavity 4c is connected to the liquid inlet cavity. The setting of the pressure relief mechanism 4 avoids the reduction of the sealing precision of the hydraulic valve caused by overpressure inside the cavity.

[0023] The intelligent temperature control module 3 is connected to the temperature control liquid inlet pipe and the outlet pipe, and includes a temperature control liquid tank 3a and a temperature control liquid column 3b that are connected. The temperature control liquid column 3b passes through the temperature control hole 1b provided on the valve housing 1, and the temperature control hole 1b is arranged to avoid the valve cavity and the pressure relief cavity 4c; more specifically, a waterproof temperature sensor is arranged in the temperature control liquid tank 3a or the temperature control liquid column 3b, and a connecting sleeve 3b-1 is arranged at the end of the temperature control liquid column 3b that is not connected to the temperature control liquid tank 3a, and the connecting sleeve 3b-1 is connected to the temperature control liquid outlet pipe, and the connecting sleeve 3b-1 and the temperature control liquid tank 3a sandwich the valve housing 1 in the middle, and the outer side of the temperature control liquid column 3b The wall is in contact with the inner wall of the temperature control hole 1b, the number of the temperature control liquid columns 3b is 3 to 6, which correspond to the temperature control holes (1b) one by one, and the temperature range of the temperature control liquid circulating in the intelligent temperature control module 3 is 15°C to 45°C; under the monitoring of the waterproof temperature sensor, the temperature signal is transmitted to the control system. When the hydraulic valve is working in a high-temperature environment, the low-temperature temperature control liquid passes through the intelligent temperature control module 3, and when the hydraulic valve is working in a low-temperature environment, the high-temperature temperature control liquid passes through the intelligent temperature control module 3. The temperature control liquid column 3b controls the valve body at a reasonable temperature during operation through heat conduction with the valve housing 1.

[0024] In summary, the intelligent high-precision hydraulic valve disclosed by the utility model is manufactured by a high-precision machining center, with high assembly accuracy and strong sealing. It is provided with a temperature control device to control the valve body at a reasonable temperature during operation, effectively reducing the influence of thermal expansion and contraction; it has a shock-absorbing function when the valve core 2 is reset, to avoid too many vibrations causing the hydraulic valve components to loosen and the joints of the components to become larger, affecting the precision of the hydraulic valve; it is also provided with a pressure relief mechanism 4 to avoid the overpressure inside the cavity causing the hydraulic valve sealing accuracy to decrease.

[0025] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. It should be pointed out that for those skilled in the art, relevant changes, modifications or additions without departing from the concept of the utility model should be included in the protection scope of the utility model.

Claims

1. An intelligent high-precision hydraulic valve, characterized in that: The invention comprises a valve housing (1) and an intelligent temperature control module (3), wherein a valve cavity is arranged in the valve housing (1) and accommodates a valve core (2) for movement, the valve core (2) is connected to a magnetic rod (2a), and an electromagnetic module (1a) is arranged in the valve housing (1) and is located next to the magnetic rod (2a); the intelligent temperature control module (3) is connected to a temperature control liquid inlet pipe and a water outlet pipe, and comprises a temperature control liquid tank (3a) and a temperature control liquid column (3b) which are connected to each other, and the temperature control liquid column (3b) passes through a temperature control hole (1b) arranged on the valve housing (1); a pressure relief mechanism (4) is also arranged in the valve housing (1), and the pressure relief mechanism (4) comprises a pressure relief piston (4a) connected to the valve housing (1) via a tension spring (4b), and the pressure relief piston (4a) is arranged in a pressure relief cavity (4c), and the pressure relief cavity (4c) is connected to a pressure relief pipe (4d) located outside the valve housing (1).

2. An intelligent high-precision hydraulic valve according to claim 1, characterized in that: A waterproof temperature sensor is provided in the temperature control liquid bin (3a) or the temperature control liquid column (3b); a connecting sleeve (3b-1) is provided at one end of the temperature control liquid column (3b) not connected to the temperature control liquid bin (3a); and the connecting sleeve (3b-1) is in communication with a temperature control liquid outlet pipe.

3. An intelligent high-precision hydraulic valve according to claim 2, characterized in that: The number of the temperature control liquid columns (3b) is 3 to 6, which correspond one to one to the temperature control holes (1b), and the temperature range of the temperature control liquid circulating in the intelligent temperature control module (3) is 15°C to 45°C.

4. The intelligent high-precision hydraulic valve according to claim 3 is characterized in that: A return spring (2c) is provided at one end of the valve core (2), and a shock-absorbing pad (2b) is provided at the opposite end of the valve core (2).

5. An intelligent high-precision hydraulic valve according to claim 4, characterized in that: The valve cavity is connected to a liquid inlet cavity and two liquid outlet cavities, and the pressure relief cavity (4c) is connected to the liquid inlet cavity.

6. An intelligent high-precision hydraulic valve according to claim 5, characterized in that: The temperature control hole (1b) is arranged away from the valve cavity and the pressure relief cavity (4c).

7. An intelligent high-precision hydraulic valve according to claim 6, characterized in that: The connecting sleeve (3b-1) and the temperature-control liquid tank (3a) sandwich the valve housing (1) in the middle.

8. An intelligent high-precision hydraulic valve according to claim 7, characterized in that: The outer wall of the temperature-control liquid column (3b) is in contact with the inner wall of the temperature-control hole (1b).

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