Graphite paddle flowmeter

Abstract

This utility model belongs to the technical field of scraper flow meters, and particularly relates to a graphite scraper flow meter. It includes a housing, with an oil inlet pipe and an oil outlet pipe fixedly connected to the outer wall of the housing. An oil baffle block is fixedly connected inside the housing, and multiple baffles are fixedly connected between the housing and the oil baffle block. A rotating shaft is rotatably connected inside the housing, and a rotor is fixedly connected to the outer wall of the rotating shaft. Multiple scraper grooves are formed inside the rotor. Multiple connecting rods are fixedly connected to the outer wall of the rotating shaft, and springs are installed on the outer walls of the connecting rods. A graphite scraper is slidably connected to one end of each connecting rod. A meter head is fixedly connected to one side of the housing, and a quick-release device is installed on the other side of the housing. In this utility model, the scraper is slidably connected to the outer wall of the connecting rod, and the connecting rod is fixedly connected to the outer wall of the rotating shaft. There is no friction between one end of the scraper and the rotating shaft, preventing wear. When the other end of the scraper rubs against the inner wall of the housing, causing wear, the springs installed on the connecting rods will press the other side of the scraper tightly against the inner wall of the housing, eliminating gaps and reducing errors.

Description

Technical Field

[0001] This utility model belongs to the technical field of scraper flow meters, and particularly relates to graphite scraper flow meters. Background Technology

[0002] Scraper flow meters are high-precision volumetric flow measurement instruments widely used in industries such as petroleum and chemical engineering. Their core working principle involves using a rotating scraper within a rotor cavity to divide the fluid into metering units of known volume, and the total fluid volume is accumulated by measuring the number of scraper rotations. In existing technologies, to improve the performance of scraper flow meters when measuring corrosive media, high-temperature media, or media requiring good self-lubrication, graphite materials are widely used as scraper materials due to their excellent chemical inertness, high-temperature resistance, self-lubrication, and low coefficient of friction. Flow meters using graphite scrapers are generally called graphite scraper flow meters. However, existing graphite scraper flow meters still have structural defects and shortcomings in practical applications: the scraper rubs against the shaft and the inner wall of the casing during rotation, and wear occurs after prolonged operation, creating gaps between the scraper and the casing, resulting in measurement errors. Furthermore, cleaning and replacing parts is relatively troublesome, affecting the flow meter's operating efficiency. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a graphite scraper flow meter, which aims to improve the situation where the scraper wears down after prolonged operation due to friction between the scraper and the rotating shaft and the inner wall of the housing, creating gaps between the scraper and the housing and causing measurement errors. Furthermore, cleaning the flow meter and replacing parts is relatively troublesome, affecting the flow meter's working efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a graphite scraper flow meter, comprising a housing, an oil inlet pipe and an oil outlet pipe fixedly connected to the outer wall of the housing, an oil baffle fixedly connected to the inside of the housing, multiple baffles fixedly connected between the housing and the oil baffle, a rotating shaft rotatably connected to the inside of the housing, a rotor fixedly connected to the outer wall of the rotating shaft, multiple scraper grooves opened inside the rotor, multiple connecting rods fixedly connected to the outer wall of the rotating shaft, springs installed on the outer wall of the connecting rods, a graphite scraper slidably connected to one end of the connecting rods, a meter head fixedly connected to one side of the housing, and a quick disassembly device installed on the other side of the housing.

[0005] Preferably, the quick disassembly device includes a cover plate, a handle is fixedly connected to one side of the cover plate, multiple round holes are provided on the outer wall of the cover plate, a telescopic column is slidably connected inside the round holes, a slider is fixedly connected to the outer wall of the telescopic column, a fixed column is slidably connected to the top outer wall of the telescopic column, a spring is installed on the outer wall of the fixed column, and multiple sliding grooves are provided on one side of the outer surface of the housing.

[0006] Preferably, both the oil inlet pipe and the oil outlet pipe are connected to the internal cavity of the outer casing.

[0007] Preferably, the two sides of the graphite scraper are slidably connected inside the scraper groove, one end of the graphite scraper is slidably connected to one side of the baffle, and one end of the graphite scraper is slidably connected to the inner wall of the outer shell.

[0008] Preferably, the top of the rotor is slidably connected to the bottom of the oil baffle.

[0009] Preferably, the top end of the fixing post is fixedly connected to the inside of the housing, and the slider is slidably connected to the inside of the groove.

[0010] This utility model has the following beneficial effects:

[0011] 1. In this utility model, the scraper is slidably connected to the outer wall of the connecting rod, and the connecting rod is fixedly connected to the outer wall of the rotating shaft. There is no friction between one end of the scraper and the rotating shaft, so no wear will occur. When the other end of the scraper rubs against the inner wall of the outer casing and causes wear, the spring installed on the connecting rod will press the other side of the scraper tightly against the inner wall of the outer casing, eliminating gaps and reducing errors.

[0012] 2. In this utility model, the outer wall of the cover plate has multiple round holes. When the flow meter is working, the telescopic column on the outer shell is inserted into the round holes to fix the cover plate and prevent the measured liquid from leaking out. When it is necessary to clean the flow meter or replace parts, pull the slider outward along the slide groove, pull the telescopic column out of the round hole, and then lock the slider in the slide groove. The cover plate can then be pulled out by the handle, which is convenient and quick, reducing disassembly time. Attached Figure Description

[0013] Figure 1 This is a perspective view of the graphite scraper flowmeter proposed in this utility model;

[0014] Figure 2 This is a diagram showing the internal structure of the graphite scraper flowmeter proposed in this utility model.

[0015] Figure 3 This is a diagram showing the quick disassembly structure of the graphite scraper flowmeter proposed in this utility model;

[0016] Figure 4 This is a diagram showing the internal structure of the groove in the graphite scraper flowmeter proposed in this utility model.

[0017] Legend:

[0018] 1. Casing; 2. Oil outlet pipe; 3. Oil inlet pipe; 4. Oil baffle; 5. Baffle plate; 6. Rotor; 7. Graphite scraper; 8. Spring; 9. Connecting rod; 10. Shaft; 11. Cover plate; 12. Handle; 13. Round hole; 14. Slide groove; 15. Sliding block; 16. Telescopic column; 17. Fixed column; 18. Gauge head; 19. Scraper groove. Detailed Implementation

[0019] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Reference Figures 1-3 This utility model provides an embodiment of a graphite scraper flow meter, comprising a housing 1. An oil inlet pipe 3 and an oil outlet pipe 2 are fixedly connected to the outer wall of the housing 1. An oil baffle 4 is fixedly connected inside the housing 1, blocking the measuring oil and preventing it from flowing directly out of the oil outlet pipe 2 after entering through the oil inlet pipe 3, thus affecting the measurement results. Multiple baffles 5 are fixedly connected between the housing 1 and the oil baffle 4, restricting the position of the graphite scraper 7. A rotating shaft 10 is rotatably connected inside the housing 1. A rotor 6 is fixedly connected to the outer wall of the rotating shaft 10, with multiple scraper grooves 19 inside the rotor 6. Multiple connecting rods 9 are fixedly connected to the outer wall of the rotating shaft 10, and springs 8 are installed on the outer walls of the connecting rods 9. One end of each connecting rod 9 is slidably connected to a graphite scraper 7, and the springs 8 allow the graphite scraper 7 to extend and retract. A meter head 18 is fixedly connected to one side of the housing 1, displaying flow data. A quick-release device is installed on the other side of the housing 1.

[0021] Reference Figure 3 The quick disassembly device includes a cover plate 11, a handle 12 fixedly connected to one side of the cover plate 11 for easy operation, multiple round holes 13 are provided on the outer wall of the cover plate 11, a telescopic column 16 is slidably connected inside the round hole 13, a slider 15 is fixedly connected to the outer wall of the telescopic column 16, a fixed column 17 is slidably connected to the top outer wall of the telescopic column 16, a spring 8 is installed on the outer wall of the fixed column 17, and multiple grooves 14 are provided on one side of the outer surface of the outer casing 1.

[0022] Reference Figure 2 Both the oil inlet pipe 3 and the oil outlet pipe 2 are connected to the internal cavity of the outer casing 1. The two sides of the graphite scraper 7 are slidably connected to the inside of the scraper groove 19, one end of the graphite scraper 7 is slidably connected to one side of the baffle 5, and one end of the graphite scraper 7 is slidably connected to the inner wall of the outer casing 1. The top of the rotor 6 is slidably connected to the bottom of the oil baffle block 4.

[0023] Reference Figures 3-4 The top of the fixed column 17 is fixedly connected to the inside of the outer shell 1, and the slider 15 is slidably connected to the inside of the slide groove 14. The slide groove 14 is right-angled. The part parallel to the telescopic column 16 is responsible for the sliding of the slider 15, and the part perpendicular to the telescopic column 16 is responsible for locking the slider 15 and fixing the telescopic column 16.

[0024] Working principle: Measuring oil enters the flow meter through the inlet pipe 3. Under pressure, it pushes the graphite scraper 7 to rotate, which in turn drives the rotating shaft 10 and the rotor 6 to rotate. When one end of both graphite scrapers 7 is tightly fitted against the inner wall of the outer casing 1, a fixed-volume chamber is formed between the two graphite scrapers 7 and the inner wall of the outer casing 1. Then, under the action of the baffle 5, the graphite scrapers 7 retract into the scraper groove 19 inside the rotor 6, and the measuring oil flows out from the outlet pipe 2. Because the volume of measuring oil entering and leaving the chamber is fixed for each rotation of the rotor 6, the flow rate of the measuring oil can be obtained by measuring the number of rotations of the rotating shaft 10, which is fixedly connected to the rotor 6. After long-term operation, the graphite scrapers 7 and the inner wall of the outer casing 1 will wear due to friction. At this time, the spring 8 will press the graphite scrapers 7 tightly against the inner wall of the outer casing 1, eliminating the gaps caused by wear and reducing measurement errors. When disassembling the flow meter, pull the slider 15 outward to pull the telescopic column 16 out of the round hole 13. Then, lock the slider 15 in the slide groove 14 to fix the telescopic column 16. Then, use the handle 12 to pull out the cover plate 11 to complete the disassembly.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A graphite scraper flow meter, comprising a housing (1), characterized in that: The outer wall of the outer casing (1) is fixedly connected to an oil inlet pipe (3) and an oil outlet pipe (2). An oil baffle block (4) is fixedly connected inside the outer casing (1). Multiple baffles (5) are fixedly connected between the outer casing (1) and the oil baffle block (4). A rotating shaft (10) is rotatably connected inside the outer casing (1). A rotor (6) is fixedly connected to the outer wall of the rotating shaft (10). Multiple scraper grooves (19) are opened inside the rotor (6). Multiple connecting rods (9) are fixedly connected to the outer wall of the rotating shaft (10). A spring (8) is installed on the outer wall of the connecting rod (9). A graphite scraper (7) is slidably connected to one end of the connecting rod (9). A meter head (18) is fixedly connected to one side of the outer casing (1). A quick disassembly device is installed on the other side of the outer casing (1).

2. The graphite scraper flow meter according to claim 1, characterized in that: The quick disassembly device includes a cover plate (11), a handle (12) is fixedly connected to one side of the cover plate (11), a plurality of round holes (13) are opened on the outer wall of the cover plate (11), a telescopic column (16) is slidably connected inside the round hole (13), a slider (15) is fixedly connected to the outer wall of the telescopic column (16), a fixed column (17) is slidably connected to the top outer wall of the telescopic column (16), a spring (8) is installed on the outer wall of the fixed column (17), and a plurality of sliding grooves (14) are opened on one side of the outer surface of the outer shell (1).

3. The graphite scraper flow meter according to claim 1, characterized in that: Both the oil inlet pipe (3) and the oil outlet pipe (2) are connected to the internal cavity of the outer shell (1).

4. The graphite scraper flow meter according to claim 1, characterized in that: The graphite scraper (7) is slidably connected to both sides inside the scraper groove (19), one end of the graphite scraper (7) is slidably connected to one side of the baffle (5), and one end of the graphite scraper (7) is slidably connected to the inner wall of the outer shell (1).

5. The graphite scraper flow meter according to claim 1, characterized in that: The top of the rotor (6) is slidably connected to the bottom of the oil baffle (4).

6. The graphite scraper flow meter according to claim 2, characterized in that: The top of the fixed column (17) is fixedly connected to the inside of the outer shell (1), and the slider (15) is slidably connected to the inside of the groove (14).

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