Screen cloth cleaning device for oil-based drilling fluid vibrating screen

Abstract

The utility model relates to an oil base drilling fluid vibrating screen cloth cleaning device which comprises an air storage tank, a pneumatic pump, a piston, a double-action reciprocating pump and a diesel oil tank, the pneumatic pump is fixedly connected with the double-action reciprocating pump, a first piston head and a second piston head are arranged at the two ends of the piston respectively, the first piston head is located in the double-action reciprocating pump, and the second piston head is located in the double-action reciprocating pump. The second piston head is located in the pneumatic pump, an air inlet and an air outlet are formed in the pneumatic pump, the air inlet is connected with an air storage tank, a liquid inlet and a liquid outlet are formed in the double-operation reciprocating pump, the liquid inlet is connected with a diesel oil tank, the liquid outlet is connected with a spray gun, and a reset spring is arranged at the end of the first piston head. The high-pressure diesel jet cleaning device can provide safe and reliable high-pressure diesel jet to clean the screen cloth of the vibrating screen in an oil-based drilling fluid environment.

Description

Technical Field

[0001] The utility model relates to a cleaning device, in particular to a cleaning device for an oil-based drilling fluid vibrating screen cloth. Background Art

[0002] In the drilling construction of some blocks, oil-based drilling fluid is used in the third opening and all subsequent openings. The characteristics of this type of drilling construction are large wellbore size, high drilling fluid density, and large amount of returned rock cuttings, which are easy to clog the vibrating screen cloth and affect the filtering effect of the vibrating screen. Secondly, the rock cuttings accumulate on the screen cloth, which is very likely to cause the screen cloth to be damaged and affect the service life of the screen cloth. Therefore, the vibrating screen cloth needs to be cleaned in time during the construction process to ensure the screening effect of the vibrating screen and extend the service life of the screen cloth. Since oil-based drilling fluid is flammable and explosive, conventional electric high-pressure cleaning machines are prone to generate electric sparks, posing a risk of fire and explosion. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an oil-based drilling fluid vibrating screen cloth cleaning device, which can provide a safe and reliable high-pressure diesel jet to clean the vibrating screen cloth in an oil-based drilling fluid environment.

[0004] The technical solution adopted by the utility model to solve its technical problems is: constructing an oil-based drilling fluid vibrating screen cloth cleaning device, comprising an air storage tank, a pneumatic pump, a piston, a double-operating reciprocating pump and a diesel tank, the pneumatic pump and the double-acting reciprocating pump are fixedly connected, the two ends of the piston are respectively provided with a first piston head and a second piston head, the first piston head is located inside the double-operating reciprocating pump, the second piston head is located inside the pneumatic pump, the pneumatic pump is provided with an air inlet and an air outlet, the air inlet is connected to the air storage tank, the double-operating reciprocating pump is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the diesel tank, the liquid outlet is connected to the spray gun, and a return spring is provided at the end of the first piston head.

[0005] According to the above solution, the liquid outlet is connected to the spray gun through a pressure regulating valve.

[0006] According to the above solution, the return spring is a compression spring.

[0007] According to the above solution, a safety valve is provided on the gas storage tank.

[0008] According to the above scheme, a pressure gauge is provided at the liquid outlet of the double-operating reciprocating pump.

[0009] The implementation of the oil-based drilling fluid vibrating screen cloth cleaning device of the utility model has the following beneficial effects:

[0010] The utility model adopts a pneumatic double-acting reciprocating pump to effectively avoid the risks and hidden dangers of using an electric pump in an oil-based drilling fluid environment, and can safely provide continuous high-pressure diesel to clean the vibrating screen cloth, thereby extending the service life of the screen cloth. In addition, the device can also be used to clean other oil-based drilling fluid solids control equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0012] Figure 1 The utility model is a structural schematic diagram of a cleaning device for a screen cloth of an oil-based drilling fluid vibrating screen. DETAILED DESCRIPTION

[0013] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0014] like Figure 1 As shown, the oil-based drilling fluid vibrating screen cloth cleaning device of the utility model comprises an air storage tank 7, a pneumatic pump 5, a piston 4, a double-operation reciprocating pump 1 and a diesel tank 8.

[0015] The pneumatic pump 5 is fixedly connected to the double-acting reciprocating pump 1, and the two ends of the piston 4 are respectively provided with a first piston head and a second piston head, the first piston head is located inside the double-acting reciprocating pump 1, and the second piston head is located inside the pneumatic pump 5. The pneumatic pump 5 is provided with an air inlet and an air outlet, and the air inlet is connected to the air storage tank 7. The double-acting reciprocating pump 1 is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the diesel tank 8, and the liquid outlet is connected to the spray gun. A return spring 9 is provided at the end of the first piston head.

[0016] Preferably, the liquid outlet is connected to the spray gun via a pressure regulating valve 2 .

[0017] Preferably, the return spring 9 is a compression spring.

[0018] Preferably, a safety valve 6 is provided on the gas storage tank 7 .

[0019] Preferably, a pressure gauge 3 is provided at the liquid outlet of the double-operating reciprocating pump 1 .

[0020] The working principle of the utility model is as follows:

[0021] The drilling gas source room provides high-pressure airflow into the gas tank 7 with a safety valve 6. The gas supplied by the gas tank 7 enters the pneumatic pump 5 to push the piston 4 to move to the left, and the double-operating reciprocating pump 1 works, sucking diesel from the diesel tank 8, forming high-pressure diesel through the double-operating reciprocating pump 1, and passing through the pressure regulating valve 2 to the spray gun. As the safety valve 6 of the gas tank 7 opens to exhaust, the pressure of the gas tank 7 decreases. When it is less than the thrust of the spring 9, the piston 4 moves to the right, and the double-acting reciprocating pump 1 continues to work, continuing to suck diesel from the diesel tank 8, forming high-pressure diesel through the double-operating reciprocating pump 1, and passing through the pressure regulating valve 2 to the spray gun. The safety valve 6 of the gas tank 7 is closed, and the pressure of the gas tank 7 rises. When it is greater than the thrust of the return spring 9, it pushes the piston to move to the left. Reciprocating in sequence, continuously providing high-pressure diesel to clean the vibrating screen cloth.

[0022] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. An oil-based drilling fluid vibrating screen cloth cleaning device, characterized in that: The invention comprises an air storage tank (7), an air pump (5), a piston (4), a double-acting reciprocating pump (1) and a diesel tank (8), wherein the air pump (5) and the double-acting reciprocating pump (1) are fixedly connected, and the two ends of the piston (4) are respectively provided with a first piston head and a second piston head, wherein the first piston head is located inside the double-acting reciprocating pump (1), and the second piston head is located inside the air pump (5), and the air pump (5) is provided with an air inlet and an air outlet, wherein the air inlet is connected to the air storage tank (7), and the double-acting reciprocating pump (1) is provided with a liquid inlet and a liquid outlet, wherein the liquid inlet is connected to the diesel tank (8), and the liquid outlet is connected to the spray gun, and a return spring (9) is provided at the end of the first piston head.

2. The oil-based drilling fluid vibrating screen cloth cleaning device according to claim 1, characterized in that: The liquid outlet is connected to the spray gun via a pressure regulating valve (2).

3. The oil-based drilling fluid vibrating screen cloth cleaning device according to claim 1, characterized in that: The return spring (9) is a compression spring.

4. The oil-based drilling fluid vibrating screen cloth cleaning device according to claim 1, characterized in that: The gas storage tank (7) is provided with a safety valve (6).

5. The oil-based drilling fluid vibrating screen cloth cleaning device according to claim 1, characterized in that: The liquid outlet of the double-operation reciprocating pump (1) is provided with a pressure gauge (3).

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