High-precision flow meter

Abstract

The utility model relates to the technical field of flow meters, in particular to a high-precision flow meter. The device comprises a seat body and a cover plate, the cover plate is installed at the upper end of the seat body, a detection groove is formed in the middle of the seat body, a liquid inlet and a liquid outlet are formed in the two sides of the seat body respectively and communicated with the detection groove, an installation groove is formed in the cover plate, and a first gear and a second gear which are meshed with each other are installed in the detection groove of the seat body. A circuit board for detecting the rotation angle of the gear is mounted in the mounting groove; according to the utility model, through the design of the seat body and the cover plate, the liquid flowing space and the detection element are mutually independent and separated, the flow of the liquid is calculated by detecting the rotation angle of the gear, and the frequency of sending signals or pulses can be set according to requirements, so that high-precision detection is realized.

Description

Technical Field

[0001] This utility model relates to the field of flow meter technology, and specifically to a high-precision flow meter. Background Technology

[0002] Existing flow meters are widely used in industrial fields to measure fluid flow. However, in certain specialized fields, such as the pharmaceutical industry, higher accuracy is required, but existing flow meters are not accurate enough to meet these needs.

[0003] Therefore, based on the aforementioned shortcomings of existing flow meters, improvements to existing flow meters are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision flow meter that addresses the shortcomings of existing technologies, such as low accuracy.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0006] A high-precision flow meter includes a base and a cover plate. The cover plate is installed on the upper end of the base. A detection groove is formed in the middle of the base. An inlet and an outlet are respectively opened on both sides of the base. The inlet and outlet are respectively connected to the detection groove. An installation groove is formed on the cover plate. A first gear and a second gear that mesh with each other are installed in the detection groove of the base. A circuit board for detecting the rotation angle of the gears is installed in the installation groove.

[0007] Furthermore, the upper surface of the base is formed with a sealing groove, which is annularly surrounding the outside of the detection groove, and a sealing strip is embedded in the sealing groove. This increases the sealing performance and ensures detection accuracy.

[0008] Furthermore, the lower part of the mounting groove has a step and a receiving groove, with the edge of the circuit board placed on the step and the components of the circuit board located within the receiving groove. This makes circuit board installation more stable and faster.

[0009] Furthermore, an upper cover is installed above the cover plate, the upper cover closes the mounting groove, and the side wall of the upper cover has wire holes for threading wires to connect to the circuit board.

[0010] Furthermore, the receiving groove is located directly above the detection groove to ensure the accuracy of the detection.

[0011] Furthermore, the first gear and the second gear are symmetrically installed in the detection tank, with the liquid inlet and the liquid outlet directly opposite the meshing position of the first gear and the second gear to ensure smooth liquid flow.

[0012] Furthermore, two pins are vertically mounted inside the housing, and the first and second gears have central holes in their middle sections, which are respectively fitted onto the pins. This ensures the stable installation of the first and second gears, thereby guaranteeing the accuracy of the detection.

[0013] Furthermore, the inlet and outlet are horizontally positioned and have a circular orifice shape. The connection between the inlet and outlet and the detection tank is provided by a curved guide section to ensure smooth liquid flow.

[0014] Furthermore, at least one of the first and second gears has a magnet installed in its center hole, and a magnetic encoder is connected to the circuit board of the mounting slot of the cover plate. The rotation angle of the gear is detected by the interaction between the magnetic encoder and the magnet.

[0015] Furthermore, an inductive sensor is connected to the circuit board of the mounting groove of the cover plate to directly sense the rotation angle of the gear, thereby calculating the flow rate of the liquid flowing out through the outlet through a relevant algorithm.

[0016] The beneficial effects of this utility model are as follows: through the design of the seat and the cover plate, the liquid flow space and the detection element are independent and separated from each other. The flow rate of the liquid is calculated by detecting the rotation angle of the gear. The frequency of the signal or pulse can be set as needed to achieve high-precision detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a side view of the present invention.

[0019] Figure 3 This is a schematic diagram of the cover plate of this utility model.

[0020] Figure 4 This is a top view of the base of this utility model.

[0021] Figure 5 This is a partial structural schematic diagram of the present invention.

[0022] Labels and explanations:

[0023] 1. Base body, 2. Cover plate, 3. Top cover, 4. Wire hole, 5. Liquid inlet, 6. Liquid outlet, 7. Mounting groove, 8. Step, 9. Receiving groove, 10. Detection groove, 11. First gear, 12. Second gear, 13. Flow guide, 14. Sealing groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] See Figure 1 —— Figure 5 This utility model discloses a high-precision flow meter comprising: a base 1 and a cover plate 2, the cover plate 2 being installed on the upper end of the base 1, and an upper cover 3 being installed on the cover plate 2. A detection groove 10 is formed in the middle of the base 1. An inlet 5 and an outlet 6 are respectively provided on both sides of the base 1, which are symmetrically arranged and communicate with the detection groove 10. Liquid flows into the detection groove 10 through the inlet 5 and then flows out through the outlet 6.

[0026] See Figure 3 The cover plate 2 of this utility model is formed with an installation groove 7. The lower part of the installation groove 7 has a step 8 and a receiving groove 9. The edge part of the circuit board is placed on the step 8, and the components of the circuit board are located in the receiving groove 9, making the circuit board installation more convenient. The receiving groove 9 is located directly above the detection groove 10.

[0027] See Figure 4 , Figure 5 The upper surface of the base 1 of this utility model is formed with a sealing groove 14. The sealing groove 14 is annularly wrapped around the outside of the detection groove 10. A sealing strip is embedded in the sealing groove 14. When the cover plate 2 is fixedly connected to the base 1, the bottom of the cover plate 2 seals the top surface of the detection groove 10, so that the liquid will not overflow and the measurement accuracy is guaranteed.

[0028] The upper cover 3 of this utility model encloses the mounting groove 7, and the side wall of the upper cover 3 is provided with a wire hole 4 for the circuit board connection wires to pass through.

[0029] like Figure 4 As shown, the detection groove 10 of the base 1 of this utility model is equipped with a first gear 11 and a second gear 12. The first gear 11 and the second gear 12 mesh with each other and are symmetrically installed in the detection groove 10. The liquid inlet 5 and the liquid outlet 6 are directly opposite the meshing position of the first gear 11 and the second gear 12. The detection groove 10 has two circular spaces to accommodate the first gear 11 and the second gear 12 respectively. The outermost ends of the outer teeth of the first gear 11 and the second gear 12 fit tightly against the circular sidewall of the detection groove 10 to improve the detection accuracy of the product.

[0030] The base 1 of this utility model has two pins vertically installed inside. The first gear 11 and the second gear 12 have central holes in the middle and are respectively sleeved on the pins. Bearings can be sleeved on the pins. The first gear 11 and the second gear 12 are respectively sleeved on the outside of the bearings, which can ensure that the first gear 11 and the second gear 12 rotate smoothly.

[0031] The liquid inlet 5 and liquid outlet 6 of this utility model are horizontally arranged and are round holes. The bottom surface of the detection tank 10 is located at the middle height of the liquid inlet 5 and liquid outlet 6. The connection between the liquid inlet 5, liquid outlet 6 and the detection tank 10 adopts a curved guide part 13 to make the liquid flow smoother.

[0032] like Figure 4 As shown, the liquid of this invention enters the detection tank 10 through the inlet 5 on the left side and the guide part 13. The liquid drives the first gear 11 to rotate clockwise and the second gear to rotate counterclockwise, and flows out from the outlet 6 on the right side.

[0033] In the first embodiment of this utility model, a magnet is installed in the center hole of at least one of the first gear 11 and the second gear 12, and a magnetic encoder is connected to the circuit board of the mounting groove 7 of the cover plate 2. The magnetic encoder works in conjunction with the magnet to determine the rotation angle of the gear, and then calculates the flow rate of the liquid flowing out through the liquid outlet 6 through a relevant algorithm.

[0034] In a second embodiment of this utility model, an inductive sensor is connected to the circuit board of the mounting groove 7 of the cover plate 2 to directly sense the rotation angle of the gear, thereby calculating the flow rate of the liquid flowing out through the liquid outlet 6 through a relevant algorithm.

[0035] The third embodiment of this utility model is a combination of the first embodiment and the second embodiment.

[0036] This invention calculates flow rate by reading changes in gear teeth, and then sends an analog signal or a pulse through a circuit. It has high accuracy and the error range can be controlled within 0.2%.

[0037] Of course, the above-described embodiments are merely preferred examples of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A high-precision flow meter, characterized in that: It includes a base and a cover plate. The cover plate is installed on the upper end of the base. A detection groove is formed in the middle of the base. An inlet and an outlet are respectively opened on both sides of the base. The inlet and outlet are connected to the detection groove. An installation groove is formed on the cover plate. A first gear and a second gear that mesh with each other are installed in the detection groove of the base. A circuit board for detecting the rotation angle of the gears is installed in the installation groove.

2. The high-precision flow meter according to claim 1, characterized in that: The upper surface of the seat is formed with a sealing groove, which is annularly wrapped around the outside of the detection groove, and a sealing strip is embedded in the sealing groove.

3. The high-precision flow meter according to claim 1, characterized in that: The mounting groove has a step and a receiving groove at its lower part. The edge of the circuit board is placed on the step, and the components of the circuit board are located in the receiving groove.

4. A high-precision flow meter according to claim 1, characterized in that: A top cover is installed above the cover plate, the top cover closes the mounting groove, and the side wall of the top cover has a wire hole.

5. A high-precision flow meter according to claim 3, characterized in that: The receiving slot is located directly above the detection slot.

6. A high-precision flow meter according to claim 1, characterized in that: The first gear and the second gear are symmetrically installed in the detection tank, with the liquid inlet and the liquid outlet directly opposite the meshing position of the first gear and the second gear.

7. A high-precision flow meter according to claim 6, characterized in that: The housing contains two vertically mounted pins, with a central hole in the middle of the first gear and the second gear respectively fitted onto the pins.

8. A high-precision flow meter according to claim 1, characterized in that: The inlet and outlet are horizontally arranged and are circular holes. The connection between the inlet and outlet and the detection tank is a curved guide section.

9. A high-precision flow meter according to any one of claims 1-8, characterized in that: At least one of the first gears and the second gear has a magnet installed in its center hole, and a magnetic encoder is connected to the circuit board of the mounting slot of the cover plate.

10. A high-precision flow meter according to any one of claims 1-8, characterized in that: An inductive sensor is connected to the circuit board of the mounting slot of the cover plate.

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