A flow meter

Abstract

The application belongs to the technical field of fluid flow measuring instrument structure, and particularly relates to a flowmeter, which comprises a box body, a containing space formed in the box body, a gear counting set installed in the containing space and a counting sensor arranged outside the box body, corresponding liquid inlet and liquid outlet are arranged on the opposite two sides of the box body, the liquid inlet, the containing space and the liquid outlet are sequentially arranged to form a liquid flow channel, the gear counting set comprises an elliptical gear and a magnetic element installed on the elliptical gear, the counting sensor is arranged correspondingly with the magnetic element and is configured to record the number of rotations of the magnetic element, the elliptical gear is sleeved on a tungsten steel rotating shaft, a tungsten steel shaft sleeve is arranged between the elliptical gear and the tungsten steel rotating shaft, and the two ends of the tungsten steel rotating shaft abut against the two opposite inner surfaces of the box body.

Description

Technical Field

[0001] This application belongs to the technical field of fluid flow measurement instrument structure, specifically relating to a flow meter. Background Technology

[0002] Metrology is the eye of industrial production. Flow measurement is an integral part of metrological science and technology, closely related to the national economy, national defense, and scientific research. Doing this work well plays a vital role in ensuring product quality, improving production efficiency, and promoting scientific and technological development. Especially in today's era of energy crisis and increasing automation in industrial production, the status and role of flow meters in the national economy are even more prominent.

[0003] A flow meter is an instrument that indicates the measured flow rate and / or the total fluid volume within a selected time interval. Simply put, it is an instrument used to measure the flow rate of fluid in pipes or open channels. However, most existing flow meters on the market are only compatible with a single medium, such as measuring only water or only oil. Furthermore, they have a short service life and poor measurement accuracy when measuring corrosive liquids. There is an urgent need for a solution to address these issues. Utility Model Content

[0004] The purpose of this application is to provide a flow meter that, in practical applications, utilizes a tungsten carbide rotating shaft and a tungsten carbide bushing to achieve universal compatibility with water, oil, and corrosive liquids while ensuring metering accuracy and service life.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A flow meter includes a housing, a accommodating space formed within the housing, a gear counting assembly installed within the accommodating space, and a counting sensor disposed outside the housing. The housing has corresponding inlet and outlet ports on two opposite sides. The inlet, accommodating space, and outlet are sequentially arranged to form a liquid flow path. The gear counting assembly includes meshing elliptical gears and a magnetic element mounted on the elliptical gears. The counting sensor is correspondingly disposed with the magnetic element and configured to record the number of rotations of the magnetic element. The elliptical gear is sleeved on a tungsten carbide rotating shaft, and a tungsten carbide bushing is provided between the elliptical gear and the tungsten carbide rotating shaft. The two ends of the tungsten carbide rotating shaft respectively abut against two opposite inner surfaces of the housing.

[0007] As an improvement of the flow meter described in this application, the housing includes a shell and a cover plate disposed on the shell, the accommodating space is disposed inside the shell, and the counting sensor is mounted on the cover plate.

[0008] As an improvement of the flow meter described in this application, the elliptical gear is provided in two identical structures, each including gear teeth on the outer peripheral surface and a receiving groove on the top. The receiving groove has a mounting columnar groove that protrudes relative to its bottom surface and faces the opening of the cover plate. The magnetic element is disposed in the mounting columnar groove.

[0009] As an improvement to the flow meter described in this application, a mounting columnar hole is formed at the central axis position of the elliptical gear, penetrating the elliptical gear, and the part of the sleeve forming the mounting columnar hole is located in the receiving groove.

[0010] As an improvement to the flow meter described in this application, the mounting columnar groove is offset from the mounting columnar hole.

[0011] As an improvement of the flow meter described in this application, the inlet and outlet have the same structure and are symmetrically arranged. Their bottoms are both recessed downwards relative to the bottom of the accommodating space. The opposite ports of the inlet and outlet are both set as pointed groove structures, and the pointed ends are located near the meshing part of the elliptical gear.

[0012] As an improvement to the flow meter described in this application, the tip is provided with a chamfered structure.

[0013] As an improvement to the flow meter described in this application, a sealing groove is provided on the side of the housing facing the cover plate, and a sealing ring is interference-fitted into the sealing groove.

[0014] The beneficial effects of this application are as follows: In actual use, this application utilizes the volumetric rotational motion of the elliptical gear to divide and transport the fluid, and then counts the number of rotations of the magnetic element driven by the elliptical gear through the principle of magneto-electric induction, and finally calculates the flow rate of the fluid. At the same time, by setting the tungsten steel rotating shaft and tungsten steel bushing, it has the characteristic of being suitable for water, oil and corrosive liquids, which further ensures the metering accuracy of the flow meter and extends the service life of the flow meter. Attached Figure Description

[0015] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0016] Figure 1 This is one of the structural schematic diagrams of an embodiment of this application.

[0017] Figure 2 This is a second structural schematic diagram of an embodiment of this application. (Without cover plate and counting sensor)

[0018] Figure 3 This is an exploded view of an embodiment of this application.

[0019] The reference numerals in the attached figures are explained as follows:

[0020] 1. Box body; 11. Liquid inlet; 12. Liquid outlet; 13. Shell; 131. Sealing groove; 14. Cover plate; 15. Sealing ring; 16. Tip;

[0021] 2. Storage space;

[0022] 3. Gear counting assembly; 31. Elliptical gear; 311. Gear teeth; 312. Receiving groove; 313. Mounting columnar groove; 314. Mounting columnar hole; 32. Magnetic element; 33. Tungsten carbide rotating shaft; 34. Tungsten carbide bushing;

[0023] 4. Counting sensor. Detailed Implementation

[0024] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error. Furthermore, terms such as "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] The following is in conjunction with the appendix Figures 1-3 The present application will be further described in detail with reference to specific implementation methods, but this is not intended to limit the present application.

[0028] Implementation

[0029] A flow meter includes a housing 1, a receiving space 2 formed within the housing 1, a gear counting assembly 3 installed within the receiving space 2, and a counting sensor 4 disposed outside the housing 1. The housing 1 has corresponding inlet 11 and outlet 12 on two opposite sides. The inlet 11, receiving space 2, and outlet 12 are sequentially arranged to form a liquid flow path. The gear counting assembly 3 includes meshing elliptical gears 31 and a magnetic element 32 installed on the elliptical gears 31. The counting sensor 4 is correspondingly disposed to the magnetic element 32 and configured to record the number of rotations of the magnetic element 32. The elliptical gears 31 are sleeved on a tungsten carbide rotating shaft 33, and a tungsten carbide bushing 34 is provided between the elliptical gears 31 and the tungsten carbide rotating shaft 33. The two ends of the tungsten carbide rotating shaft 33 respectively abut against two opposite inner surfaces of the housing 1. The tungsten carbide rotating shaft 33 provides rotational support for the elliptical gears 31, ensuring the stability of their meshing motion and further guaranteeing the metering accuracy of the flow meter.

[0030] In practical applications, liquid flows into the liquid flow passage through the inlet 11. The pressure of the fluid drives the elliptical gears 31 to rotate around their respective tungsten steel rotating shafts 33. During the rotation, the sealed accommodating space 2 where the elliptical gears 31 are located continuously captures and transports the fluid. Each rotation results in a fixed volume of fluid being discharged from the outlet 12. The magnetic element 32 mounted on the elliptical gears 31 rotates with them. Each time the magnetic element 32 passes the counting sensor 4, the counting sensor 4 senses a magnetic signal. By counting the output signal of the counting sensor 4, the number of rotations of the elliptical gears 31 can be determined. Since the volume of fluid transported by the elliptical gears 31 per rotation is fixed, i.e., the flow rate of the flow meter, the total amount of fluid flowing through the flow meter can be calculated by "number of rotations × flow rate", thus achieving flow measurement.

[0031] In this embodiment, the volumetric rotation of the elliptical gear 31 is used to divide and transport the fluid. The number of rotations of the magnetic element 32 driven by the elliptical gear 31 is counted by the principle of magneto-electric induction, and the flow rate of the fluid is finally calculated. At the same time, by setting the tungsten steel rotating shaft 33 and the tungsten steel bushing 34 and the hard anodizing treatment of the housing 1, it has the characteristic of being suitable for water, oil and corrosive liquids, which further ensures the metering accuracy of the flow meter and extends the service life of the flow meter.

[0032] Specifically, the housing 1 includes a shell 13 and a cover plate 14 covering the shell 13. The accommodating space 2 is located inside the shell 13. The liquid inlet 11 and the liquid outlet 12 are located on opposite sides of the shell 13. The counting sensor 4 is installed on the cover plate 14. A sealing groove 131 is provided on the side of the shell 13 facing the cover plate 14. A sealing ring 15 is interference-fitted into the sealing groove 131. The sealing ring 15 plays a sealing role to prevent fluid leakage, improve safety, and ensure measurement accuracy.

[0033] Specifically, there are two elliptical gears 31 with the same structure. Each includes gear teeth 311 on the outer peripheral surface and a receiving groove 312 on the top. The receiving groove 312 has a mounting columnar groove 313 that protrudes relative to its bottom surface and opens towards the cover plate 14. The magnetic element 32 is located in the mounting columnar groove 313. A mounting columnar hole 314 is formed at the central axis of the elliptical gear 31, penetrating the elliptical gear 31. The part of the sleeve forming the mounting columnar hole 314 is located in the receiving groove 312. The mounting columnar groove 313 and the mounting columnar hole 314 are staggered for easy installation.

[0034] Specifically, the liquid inlet 11 and the liquid outlet 12 have the same structure and are symmetrically arranged. Their bottoms are both recessed relative to the bottom of the accommodating space 2. The opposite ports of the liquid inlet 11 and the liquid outlet 12 are both set as pointed groove structures, and the pointed tip 16 is set near the meshing part of the elliptical gear 31. In this embodiment, the pointed tip 16 is set as a chamfered structure.

[0035] In practical applications, the tip 16 can guide the flow of liquid, further ensuring measurement accuracy.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this application is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this application are within the scope of protection of this application. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this application.

Claims

1. A flow meter, characterized in that, The device includes a housing (1), a accommodating space (2) formed within the housing (1), a gear counting assembly (3) installed within the accommodating space (2), and a counting sensor (4) located outside the housing (1). The housing (1) has corresponding inlets (11) and outlets (12) on opposite sides. The inlets (11), the accommodating space (2), and the outlets (12) are sequentially arranged to form a liquid flow path. The gear counting assembly (3) includes intermeshing elliptical... The elliptical gear (31) and the magnetic element (32) mounted on the elliptical gear (31) are provided. The counting sensor (4) is correspondingly arranged with the magnetic element (32) and configured to record the number of rotations of the magnetic element (32). The elliptical gear (31) is sleeved on the tungsten steel rotating shaft (33) and a tungsten steel bushing (34) is provided between the elliptical gear (31) and the tungsten steel rotating shaft (33). The two ends of the tungsten steel rotating shaft (33) respectively abut against the two opposing inner surfaces of the box body (1).

2. The flow meter as described in claim 1, characterized in that, The box body (1) includes a shell (13) and a cover plate (14) covering the shell (13). The accommodating space (2) is located inside the shell (13), and the counting sensor (4) is installed on the cover plate (14).

3. The flow meter as described in claim 2, characterized in that, The elliptical gear (31) has two identical structures, each including gear teeth (311) on the outer peripheral surface and a receiving groove (312) on the top. The receiving groove (312) has a mounting column groove (313) that protrudes relative to its bottom surface and opens toward the cover plate (14). The magnetic element (32) is located in the mounting column groove (313).

4. The flow meter as described in claim 3, characterized in that, The elliptical gear (31) has a mounting columnar hole (314) through the elliptical gear (31) at the central axis position, and the part of the sleeve forming the mounting columnar hole (314) is located in the receiving groove (312).

5. The flow meter as described in claim 4, characterized in that, The mounting columnar groove (313) is offset from the mounting columnar hole (314).

6. The flow meter as described in claim 1, characterized in that, The inlet (11) and outlet (12) have the same structure and are symmetrically arranged. Their bottoms are both recessed relative to the bottom of the accommodating space (2). The opposite ports of the inlet (11) and outlet (12) are both set as pointed groove structures, and the pointed end (16) is set near the meshing point of the elliptical gear (31).

7. The flow meter as described in claim 6, characterized in that, The tip (16) is provided with a chamfered structure.

8. The flow meter as described in claim 2, characterized in that, The housing (13) has a sealing groove (131) on the side facing the cover plate (14), and a sealing ring (15) is interference-fitted into the sealing groove (131).

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