Oil storage tank with sampling function for hydraulic system

Abstract

The utility model relates to an oil storage tank with a sampling function for a hydraulic system, and belongs to the technical field of hydraulic system equipment.The oil storage tank comprises an oil tank body, a sampling pipe is arranged on the side of the oil tank body, the side of the upper end and the side of the lower end of the sampling pipe are communicated with a liquid inlet pipe and a liquid outlet pipe respectively, and the liquid outlet pipe is communicated with the oil storage tank; a one-way valve is installed in the liquid outlet pipe, the flow direction of the one-way valve faces the interior of the oil tank body, the liquid inlet pipe is communicated with the liquid return end of the hydraulic system, an air pressure adjusting piece is arranged at the top end of the sampling pipe, the bottom end of the sampling pipe is communicated with a liquid discharging pipe, and a valve is connected between the liquid discharging pipe and the sampling pipe. By arranging the sampling pipe, hydraulic oil flowing back from the hydraulic system firstly flows through the sampling pipe and then flows back into the oil storage tank, during sampling, sampling can be directly carried out only by opening a valve at the bottom end of the sampling pipe, sampling is convenient, and the hydraulic oil cannot be polluted.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic system equipment, and in particular to an oil reservoir with sampling function for a hydraulic system. Background Technology

[0002] The function of a hydraulic system is to increase force by changing pressure. A complete hydraulic system consists of five parts: power element, actuator, control element, auxiliary elements (accessories), and hydraulic oil. Hydraulic systems can be divided into two categories: hydraulic transmission systems and hydraulic control systems. Hydraulic transmission systems primarily function to transmit power and motion. Hydraulic control systems, on the other hand, ensure that the hydraulic system output meets specific performance requirements. Generally, the term "hydraulic system" primarily refers to the hydraulic transmission system.

[0003] After a period of use, hydraulic oil will deteriorate in quality due to oxidation and contamination. Therefore, the hydraulic oil in the hydraulic system should be sampled and tested regularly. Once its physical and chemical indicators reach the oil replacement index, it must be replaced.

[0004] The oil reservoirs used in existing hydraulic systems have a conventional structure, which are integrated inside the hydraulic system. Sampling requires pump extraction, which is quite troublesome. Therefore, there is an urgent need to improve the existing oil reservoirs to facilitate sampling and testing. Utility Model Content

[0005] The purpose of this application is to provide an oil storage tank with sampling function for a hydraulic system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides a hydraulic system oil storage tank with sampling function, using the following technical solution:

[0007] A hydraulic system oil storage tank with sampling function includes an oil tank body. A sampling tube is provided on the side of the oil tank body. An inlet pipe and an outlet pipe are respectively connected to the upper and lower ends of the sampling tube. The outlet pipe is connected to the oil storage tank. A one-way valve is installed in the outlet pipe. The flow direction of the one-way valve is towards the oil tank body. The inlet pipe is connected to the return end of the hydraulic system. A pressure regulating component is provided at the top of the sampling tube. A drain pipe is connected to the bottom of the sampling tube. A valve is connected between the drain pipe and the sampling tube.

[0008] The oil tank body is provided with an oil filling port, and a sealing cap is provided at the oil filling port. A pressure regulating valve is provided inside the sealing cap.

[0009] Preferably, the air pressure adjusting piece comprises a hollow cylindrical shell, a spring, a stopper and a push rod, the hollow cylindrical shell is fixedly screwed at the top of the sampling pipe and communicates with the inside of the sampling pipe, a support block and a limiting ring block are sequentially arranged in the hollow cylindrical shell from top to bottom, a plurality of air permeation grooves are formed in the surface of the support block, one end of the spring is fixed on the support block, the stopper is fixed on the spring and arranged at the bottom end of the limiting ring block, the stopper can abut against the limiting ring block under the pulling force of the spring, and the push rod penetrates through the support block and is fixed on the stopper.

[0010] By adopting the technical scheme, the air pressure adjusting piece is arranged, in use, the push rod is pushed downward, the push rod drives the stopper to move away from the limiting ring block, and an air pressure channel is formed between the limiting ring block and the stopper, at this time, the hydraulic oil in the sampling pipe can flow out from the lower drain pipe.

[0011] The bottom end of the limiting ring block is fixed with a sealing gasket.

[0012] Preferably, in order to avoid dust from adhering to the air pressure adjusting piece and affecting the hydraulic oil later, a dust cover is threadedly screwed at the top end of the sampling pipe and arranged on the surface of the air pressure adjusting piece.

[0013] To sum up, the oil tank with sampling function for a hydraulic system has at least one of the following beneficial technical effects: the oil tank with sampling function for a hydraulic system is provided with a sampling pipe, the hydraulic oil flowing back from the hydraulic system first passes through the sampling pipe and then flows back into the oil tank, and when sampling, the valve at the bottom end of the sampling pipe is only needed to be opened to directly sample, so that sampling is convenient and the hydraulic oil is not polluted. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a whole structure schematic view of the embodiment of the application.

[0015] Fig. 2 is an exploded structure schematic view of the embodiment of the application.

[0016] Marked 1 is an oil tank body, 11 is a sealing cover, 2 is a sampling pipe, 21 is an inlet pipe, 22 is an outlet pipe, 3 is an air pressure adjusting piece, 31 is a hollow cylindrical shell, 32 is a spring, 33 is a stopper, 34 is a push rod, 35 is a support block, 351 is an air permeation groove, 36 is a limiting ring block, 4 is a drain pipe, 5 is a valve, and 6 is a dust cover. DETAILED DESCRIPTION

[0017] The application will be further described below with reference to the accompanying drawings. Figs. 1-2 The application will be further described below with reference to the accompanying drawings.

[0018] The embodiment of the application discloses an oil tank with sampling function for a hydraulic system, which refers to Figs. 1-2The oil tank body 1 is provided with an oil inlet, and a sealing cover 11 is arranged at the oil inlet, and a pressure regulating valve is arranged in the sealing cover 11, a sampling pipe 2 is arranged at the side of the oil tank body 1, liquid inlet pipes 21 and liquid outlet pipes 22 are respectively connected to the upper and lower ends of the sampling pipe 2, the liquid outlet pipe 22 is connected to an oil tank, a one-way valve is arranged in the liquid outlet pipe 22, the flow direction of the one-way valve is towards the oil tank body 1, the liquid inlet pipe 21 is connected to a liquid return end of a hydraulic system, a gas pressure adjusting part 3 is arranged at the top end of the sampling pipe 2, a liquid discharge pipe 4 is connected to the bottom end of the sampling pipe 2, and a valve 5 is arranged between the liquid discharge pipe 4 and the sampling pipe 2.

[0019] With reference to Fig. 2 The gas pressure adjusting part 3 comprises a hollow cylindrical shell 31, a spring 32, a stop block 33 and a push rod 34, the hollow cylindrical shell 31 is threadedly fixed at the top of the sampling pipe 2 and is connected to the inside of the sampling pipe 2, a support block 35 and a limiting ring block 36 are sequentially arranged in the hollow cylindrical shell 31 from top to bottom, a plurality of air grooves 351 are formed in the surface of the support block 35, one end of the spring 32 is fixed to the support block 35, the stop block 33 is fixed to the spring 32, the stop block 33 is arranged at the bottom end of the limiting ring block 36, the stop block 33 can abut against the limiting ring block 36 under the action of the pulling force of the spring 32, the push rod 34 penetrates through the support block 35 and is fixed to the stop block 33, and a sealing gasket is fixed to the bottom end of the limiting ring block 36.

[0020] By arranging the gas pressure adjusting part 3, when in use, the push rod 34 is pushed downwards, the push rod 34 drives the stop block 33 to move away from the limiting ring block 36, and an air pressure passage is formed between the limiting ring block 36 and the stop block 33, at this time, the hydraulic oil in the sampling pipe 2 can flow out from the liquid discharge pipe 4 below.

[0021] With reference to Figs. 1-2 In order to avoid dust from adhering to the gas pressure adjusting part 3 and affecting the hydraulic oil in the later period, a dust cover 6 is threadedly screwed at the top end of the sampling pipe 2 and is arranged on the surface of the gas pressure adjusting part 3.

[0022] The implementation principle of the oil tank with a sampling function for a hydraulic system in the embodiment of the application is as follows:

[0023] The hydraulic oil in the oil tank is used by the hydraulic system, the backflow hydraulic oil enters the sampling pipe 2 through the liquid inlet pipe 21 and then returns to the oil tank through the liquid outlet pipe 22 at the bottom of the sampling pipe 2, so as to be cyclically used, and when sampling, the hydraulic system stops working, the valve 5 at the bottom end of the sampling pipe 2 is opened, and the push rod 34 in the gas pressure adjusting part 3 is pushed downwards, the push rod 34 drives the stop block 33 to move away from the limiting ring block 36, at this time, under the action of the gas pressure, the hydraulic oil in the sampling pipe 2 can flow out from the liquid discharge pipe 4 (due to the existence of the one-way valve, the hydraulic oil in the oil tank cannot flow into the sampling pipe 2), so as to facilitate the test and detection, and the sampling is relatively simple.

[0024] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A hydraulic system oil storage tank with sampling function, comprising an oil tank body (1), characterized in that: A sampling tube (2) is provided on the side of the oil tank body (1). The upper and lower ends of the sampling tube (2) are respectively connected to an inlet pipe (21) and an outlet pipe (22). The outlet pipe (22) is connected to the oil storage tank. A one-way valve is installed in the outlet pipe (22). The flow direction of the one-way valve is towards the inside of the oil tank body (1). The inlet pipe (21) is connected to the return end of the hydraulic system. A pressure regulating component (3) is provided at the top of the sampling tube (2). A drain pipe (4) is connected at the bottom of the sampling tube (2). A valve (5) is connected between the drain pipe (4) and the sampling tube (2).

2. The hydraulic system oil storage tank with sampling function according to claim 1, characterized in that: The oil tank body (1) is provided with an oil inlet, and a sealing cap (11) is provided at the oil inlet. A pressure regulating valve is provided inside the sealing cap (11).

3. The hydraulic system oil storage tank with sampling function according to claim 1, characterized in that: The air pressure regulating component (3) includes a hollow cylindrical shell (31), a spring (32), a stop block (33), and a push rod (34). The hollow cylindrical shell (31) is threadedly fixed to the top of the sampling tube (2) and is connected to the inside of the sampling tube (2). A support block (35) and a limiting ring block (36) are arranged sequentially from top to bottom inside the hollow cylindrical shell (31). The surface of the support block (35) is provided with several air vents (351). One end of the spring (32) is fixed to the support block (35). The stop block (33) is fixed to the spring (32) and is located at the bottom of the limiting ring block (36). The stop block (33) can abut against the limiting ring block (36) under the tension of the spring (32). The push rod (34) passes through the support block (35) and is fixed to the stop block (33).

4. The hydraulic system oil storage tank with sampling function according to claim 3, characterized in that: A sealing gasket is fixed at the bottom of the limiting ring block (36).

5. The hydraulic system oil storage tank with sampling function according to claim 1, characterized in that: The top end of the sampling tube (2) is threaded with a dust cover (6), which is disposed on the surface of the air pressure regulator (3).

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