Fan blowback hydraulic control valve

Abstract

The utility model discloses a fan blowback hydraulic control valve which comprises a fan body, an overflow valve, a hydraulic oil tank, a two-position two-way electromagnetic valve, a two-position three-way electromagnetic valve, a main oil inlet, a fan blade steering oil cylinder control oil port, a main oil return port and a non-pressure oil return port when a fan is kept in a normal state. The main oil inlet is communicated with the hydraulic oil tank, the overflow valve and the two-position two-way electromagnetic valve, the fan steering oil cylinder control oil port is communicated with the fan body and the two-position two-way electromagnetic valve, and the main oil return port is communicated with the overflow valve and the two-position two-way electromagnetic valve. And when the fan is kept in a normal state, the non-pressure oil return port is communicated with the hydraulic oil tank and the two-position three-way electromagnetic valve. The fan blades are kept in a back blowing state, dust, weeds and the like adsorbed in a heat dissipation system are removed, and the performance problem that heat dissipation of a radiator is not smooth is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan reverse blowing hydraulic control valve belongs to the field of air cooling radiator cooling technology. BACKGROUND

[0002] Most power system radiators are cooled by engine direct drive fan suction, and in harsh working environments, the radiator inevitably adsorbs dust and weeds, which affects the heat dissipation of the radiator and causes the cooling water to overheat, resulting in shutdown, waiting for the cooling water to cool down, and then cleaning and removing dust and weeds, which is time-consuming and labor-intensive, and reduces work efficiency. UTILITY MODEL CONTENTS

[0003] The utility model discloses a fan reverse blowing hydraulic control valve can make the fan reverse blowing to clean the dust and weeds adsorbed on the surface of the radiator in the working environment, and improve work efficiency.

[0004] To achieve the above object, a fan reverse blowing hydraulic control valve is provided, which comprises a fan body, an overflow valve, a hydraulic oil tank, a two-position two-way electromagnetic valve, a two-position three-way electromagnetic valve, a main oil inlet, a fan blade steering oil cylinder control oil port, a main oil return port, and a fan normal state pressureless oil return port. The main oil inlet is in communication with the hydraulic oil tank, the overflow valve and the two-position two-way electromagnetic valve respectively. The fan steering oil cylinder control oil port is in communication with the fan body and the two-position two-way electromagnetic valve respectively. The main oil return port is in communication with the overflow valve and the two-position two-way electromagnetic valve. The fan normal state pressureless oil return port is in communication with the hydraulic oil tank and the two-position three-way electromagnetic valve. The fan reverse blowing can clean the dust and weeds adsorbed on the surface of the radiator in the working environment, and improve work efficiency.

[0005] According to the fan reverse blowing hydraulic control valve, the fan body is composed of a fan and a hydraulic motor, and the oil port of the hydraulic motor is in communication with the two-position two-way electromagnetic valve. The fan steering is changed to make the fan reverse blowing.

[0006] According to the fan reverse blowing hydraulic control valve, the fan body does not reverse blowing when the two-position two-way electromagnetic valve and the two-position three-way electromagnetic valve are powered on. The fan normally rotates to cool the radiator.

[0007] According to the fan reverse blowing hydraulic control valve, the fan body reverses blowing when the two-position two-way electromagnetic valve and the two-position three-way electromagnetic valve are not powered on. The fan cleans the surface of the radiator.

[0008] According to the fan reverse blowing hydraulic control valve, a damping hole is installed in the main oil inlet. The flow of hydraulic oil is controlled, and the fan blade reverse rotation angle time is controlled.

[0009] Compared with the prior art, the fan blade keeps the back blowing state during the working of the device, dust, weeds and the like adsorbed in the heat dissipation system are removed, the performance problem of poor heat dissipation of the radiator is solved, and the working efficiency is improved.

[0010] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0011] The present application will be further described below in conjunction with the drawings and embodiments.

[0012] Figure 1 is a structure diagram of the non-back blowing state of the fan back blowing hydraulic control valve of the present application;

[0013] Figure 2 is a structure diagram of the back blowing state of the fan back blowing hydraulic control valve of the present application;

[0014] Figure 3 is a structure diagram of the first perspective of the fan back blowing hydraulic control valve of the present application;

[0015] Figure 4 is a structure diagram of the second perspective of the fan back blowing hydraulic control valve of the present application.

[0016] In the drawing: 1, fan main body; 2, overflow valve; 3, hydraulic oil tank; 4, two-position two-way electromagnetic valve; 5, two-position three-way electromagnetic valve; P, main oil inlet; A, fan blade steering oil cylinder control oil port; T1, main oil return port; T2, fan keeps normal state pressureless oil return port. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0018] Please refer to Figures 1-4The utility model provides a technical scheme: a fan backblowing hydraulic control valve, including fan main body 1, overflow valve 2, hydraulic oil tank 3, two position two way electromagnetic valve 4, two position three way electromagnetic valve 5, main oil inlet P, fan blade steering oil cylinder control oil port A, main oil return port T1, fan keeps normal state pressureless oil return port T2, main oil inlet P is linked together with hydraulic oil tank 3, overflow valve 2, two position two way electromagnetic valve 4 respectively, install damping hole in main oil inlet P, control the flow of hydraulic oil, to control fan blade reverse angle time. Fan steering oil cylinder control oil port is linked together with fan main body 1 and two position two way electromagnetic valve 4 respectively, and main oil return port T1 is linked together with overflow valve 2 and two position two way electromagnetic valve 4, and fan keeps normal state pressureless oil return port T2 is linked together with hydraulic oil tank 3 and two position three way electromagnetic valve 5, and fan main body 1 is composed of fan and hydraulic motor, and the oil port of hydraulic motor is linked together with fan blade steering oil cylinder control oil port A. It is used for changing fan steering, and makes fan backblowing. When two position two way electromagnetic valve 4 and two position three way electromagnetic valve 5 are electrified, fan main body 1 does not backblow, and it is used for making fan normal rotation cooling radiator. When two position two way electromagnetic valve 4 and two position three way electromagnetic valve 5 are not electrified, fan main body 1 backblows, and makes fan clean radiator surface.

[0019] Working principle: hydraulic oil tank 3 is linked together with main oil inlet P, and two position two way electromagnetic valve 4 and two position three way electromagnetic valve 5 are controlled simultaneously with switch, when two position two way electromagnetic valve 4 and two position three way electromagnetic valve 5 are electrified simultaneously, system keeps Figure 2 State work, and the hydraulic motor of fan main body 1 is controlled by two position three way electromagnetic valve 5, and the oil port of the hydraulic motor of fan main body 1 is linked together with fan blade steering oil cylinder control oil port A, and two position two way electromagnetic valve 4 is in cut-off state, and oil hydraulic pressure rises to overflow valve 2 set pressure, to make fan blade keep backblowing state, and damping hole guarantees that fan blade reverse rotation is completed in specific time, and excess hydraulic oil is released to main oil return port T1 by overflow valve 2 and is directly returned to hydraulic oil tank 3 or other hydraulic circuit, and fan keeps normal state pressureless oil return port T2 is linked together with hydraulic oil tank 3.

[0020] When two position two way electromagnetic valve 4 and two position three way electromagnetic valve 5 are not electrified, system keeps Figure 1 State work, and the hydraulic motor of fan main body 1 is controlled by two position three way electromagnetic valve 5, and the oil port of the hydraulic motor of fan main body 1 is closed, and will not cause fan blade vibration because of fan blade rotation inertia, and main oil inlet P is directly returned to hydraulic oil tank 3 or other hydraulic circuit by two position two way electromagnetic valve 4 and by main oil return port T1 at this time, and fan keeps normal state pressureless oil return port T2 is linked together with hydraulic oil tank 3, and the hydraulic oil of fan blade steering oil cylinder control oil port A is pushed into hydraulic oil tank 3 by steering oil cylinder internal self-contained spring pressure through fan keeps normal state pressureless oil return port T2.

[0021] The utility model embodiment makes the detailed explanation in combination with the drawing, but the utility model is not limited to the above -mentioned embodiment, still can make various changes in the knowledge range that the person skilled in the art has possesses without departing from the utility model's tenet under the precondition that the knowledge range that the person skilled in the art has possesses.

Claims

1. A fan backflush hydraulic control valve, comprising a fan body (1), an overflow valve (2), a hydraulic oil tank (3), a two-position two-way electromagnetic valve (4), a two-position three-way electromagnetic valve (5), a main oil inlet (P), a fan blade turning oil cylinder control oil port (A), a main oil return port (T1), a fan normal state retention pressureless oil return port (T2), characterized in that, The main oil inlet (P) is communicated with the hydraulic oil tank (3), the overflow valve (2) and the two-position two-way electromagnetic valve (4) respectively, the fan turning oil cylinder control oil port is communicated with the fan body (1) and the two-position two-way electromagnetic valve (4) respectively, the main oil return port (T1) is communicated with the overflow valve (2) and the two-position two-way electromagnetic valve (4), and the pressureless oil return port (T2) of the fan in the normal state is communicated with the hydraulic oil tank (3) and the two-position three-way electromagnetic valve (5).

2. A fan blowback hydraulic control valve as claimed in claim 1, characterized in that: The fan body (1) is composed of a fan and a hydraulic motor, and the oil port of the hydraulic motor is communicated with the fan blade turning oil cylinder control oil port (A).

3. A fan blowback hydraulic control valve as claimed in claim 1, characterized in that: When the two-position two-way electromagnetic valve (4) and the two-position three-way electromagnetic valve (5) are powered, the fan body (1) is not back-flushed.

4. A fan blowback hydraulic control valve as claimed in claim 1, characterized in that: When the two-position two-way electromagnetic valve (4) and the two-position three-way electromagnetic valve (5) are not powered, the fan body (1) is back-flushed.

5. A fan reverse flow hydraulic control valve as set forth in claim 1 wherein: A damping hole is arranged in the main oil inlet (P).

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