Microminiature circular gear flowmeter

Abstract

The microminiature circular gear flowmeter comprises a circular gear flowmeter body, a mounting pipe is connected to the water inlet end of the circular gear flowmeter body, a mounting ring is fixed to the middle of the inner wall of the mounting pipe, a filtering piece is mounted at the mounting ring, and a water injection opening is formed in the position, close to the circular gear flowmeter body, of the top of the outer wall of the mounting pipe. A manual valve is fixed to the top of the water injection opening, a discharging opening is formed in the position, away from the circular gear flow meter, of the bottom of the outer wall of the mounting pipe, a mounting sleeve frame is fixed to the bottom of the discharging opening, a plugging assembly is mounted in the mounting sleeve frame, the filtering piece comprises a filtering net cover and a side ring, and the side ring is fixed to the edge of the filtering net cover. Mounting holes are formed in the side ring and the mounting ring at equal intervals, and the mounting ring and the side ring are fixed through bolts and nuts. The interference of entering of impurities on the circular gear flow meter is effectively reduced, and the effects of cleaning and discharging the impurities can be achieved without disassembly.

Description

Technical Field

[0001] This invention relates to the field of flow meter technology, and more particularly to a miniature circular gear flow meter. Background Technology

[0002] Gear flow meters (also known as displacement flow meters or gear flow meters) are a type of positive displacement flow meter and are among the most accurate flow instruments. They utilize mechanical measuring elements to continuously divide fluid into individual, known volume portions, measuring the total flow volume by the number of times the measuring chamber is repeatedly filled and discharged into each volume portion. Gear flow meters can be manufactured from various materials (cast iron, cast steel, 304 stainless steel, 316 stainless steel) and are suitable for flow measurement in industries such as chemical, petroleum, pharmaceutical, power, metallurgy, and food processing.

[0003] Existing flow meters have a small gap between the elliptical gear and the metering chamber. When the liquid being measured contains small solid particles, these particles, unable to flow out with the liquid, settle in the gap at the bottom of the metering chamber. When this accumulation reaches a certain amount, the solid particles can jam the elliptical gear, preventing flow measurement. Cleaning can only be done by disassembling the metering instrument at the front of the metering chamber and opening the chamber, which is time-consuming and laborious. Furthermore, the fluid often contains fine solid particles that are difficult to remove. Therefore, we have made an improvement by proposing a miniature elliptical gear flow meter. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a miniature circular gear flow meter.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A miniature gear flow meter includes a gear flow meter with an inlet connected to an installation pipe. An installation ring is fixed to the middle of the inner wall of the installation pipe, and a filter element is installed at the installation ring. An inlet is located on the top of the outer wall of the installation pipe near the gear flow meter, and a manual valve is fixed to the top of the inlet. An outlet is located on the bottom of the outer wall of the installation pipe away from the gear flow meter, and an installation bracket is fixed to the bottom of the outlet. A sealing assembly is installed inside the installation bracket. The filter element includes a filter screen and a side ring. The side ring is fixed to the edge of the filter screen. Installation holes are equidistantly provided on the side ring and the installation ring. The installation ring and the side ring are fixed together by bolts and nuts. The filter screen is semi-circular. Water entering the gear flow meter is filtered through the filter screen inside the installation pipe, effectively filtering out impurities and resulting in a finer water flow, effectively reducing interference from impurities.

[0007] As a further embodiment of the present invention, the sealing assembly includes a baffle plate located inside the mounting tube. A turntable is fixed to the top of the baffle plate via a shaft, and the turntable is located on the outer wall of the mounting tube. A screw is fixed to the bottom of the baffle plate. A sealing disc is slidably disposed inside the mounting sleeve. The sealing disc has a central hole, and a lead screw nut is fixed inside the hole. The screw and the lead screw nut are compatible.

[0008] As a further embodiment of the present invention, a limiting ring is fixed to the top of the inner wall of the mounting bracket, the top of the limiting ring is chamfered, a sealing gasket is fixed to the bottom of the limiting ring, and the sealing disc is located below the sealing gasket.

[0009] As a further embodiment of the present invention, the outer wall of the sealing disc is fixed with two symmetrical limiting blocks, and the inner wall of the mounting sleeve is provided with a sliding groove adapted to the limiting blocks.

[0010] As a further embodiment of the present invention, a connecting plate is fixed to the bottom of the mounting bracket, and the sealing disc is located above the connecting plate.

[0011] As a further embodiment of the present invention, the bushing connecting the turntable and the sealing assembly is provided with a bearing, and the outer wall of the mounting tube is provided with a hole for mounting and fixing the bearing.

[0012] As a further embodiment of the present invention, the baffle and the outlet are concentrically arranged, and the inner diameter of the baffle is adapted to that of the mounting pipe.

[0013] As a further embodiment of the present invention, an adapter is fixed to one end of the mounting pipe near the gear flow meter, a first flange is fixed to the outer end of the adapter, the first flange is fixed to the gear flow meter by bolts and nuts, and a second flange is fixed to one end of the mounting pipe away from the adapter.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention employs a gear flow meter, mounting pipe, filter element, manual valve, outlet, and sealing assembly. During use, the adapter on the mounting pipe is fixed to the inlet end of the gear flow meter via a first flange, and the second flange connects to the pipeline. Water entering the gear flow meter is filtered through the filter screen inside the mounting pipe, effectively removing impurities and resulting in a finer water flow, thus reducing interference from impurities.

[0016] This invention addresses the issue of accumulated impurities inside the filter screen. To facilitate cleaning, a rotating disc is used to rotate the baffle plate, simultaneously rotating the screw. Since a screw nut compatible with the screw is fixed inside the sealing disc, and the sealing disc slides within the mounting bracket under the action of a limiting block, the sealing disc moves downwards until it adheres to the top of the connecting plate. The baffle plate then rotates several times to achieve a sealing state. A manual valve is then connected to a water pipe, allowing water to enter the mounting pipe and impact the impurities inside the filter screen. The water carries the impurities out of the drain. The baffle plate provides a blocking effect, ensuring that both water and impurities are effectively discharged from the drain. This allows for the cleaning and removal of impurities without disassembly. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the miniature circular gear flow meter proposed in this invention;

[0018] Figure 2 This is a first partial cross-sectional three-dimensional structural schematic diagram of the micro-sized circular gear flow meter proposed in this invention;

[0019] Figure 3 This is a second partial cross-sectional three-dimensional structural schematic diagram of the micro-sized circular gear flow meter proposed in this invention;

[0020] Figure 4 This is a partial cross-sectional view of the unfolded three-dimensional structure of the miniature circular gear flow meter proposed in this invention.

[0021] Figure 5 This is a partial unfolded three-dimensional structural diagram of the sealing component of the miniature circular gear flowmeter proposed in this invention;

[0022] Figure 6 This is a three-dimensional structural diagram of the mounting bracket for the miniature circular gear flow meter proposed in this invention.

[0023] In the diagram: 1. Gear flow meter; 2. Mounting pipe; 3. Adapter; 4. First flange; 5. Second flange; 6. Mounting ring; 7. Filter element; 701. Filter screen; 702. Side ring; 8. Manual valve; 9. Outlet; 10. Sealing assembly; 11. Baffle plate; 12. Bearing; 13. Turntable; 14. Sealing plate; 15. Mounting sleeve; 16. Limiting block; 17. Slide groove; 18. Screw; 19. Connecting plate; 20. Sealing gasket; 21. Limiting ring. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Reference Figure 1-6 A miniature gear flow meter includes a gear flow meter 1, an inlet pipe 2 connected to the inlet of the gear flow meter 1, an installation ring 6 fixed in the middle of the inner wall of the installation pipe 2, and a filter element 7 installed at the installation ring 6. A water inlet is provided on the top of the outer wall of the installation pipe 2 near the gear flow meter 1, and a manual valve 8 is fixed on the top of the water inlet. A drain outlet 9 is provided on the bottom of the outer wall of the installation pipe 2 away from the gear flow meter 1, and a mounting bracket 15 is fixed at the bottom of the drain outlet 9. A sealing component 10 is installed inside the mounting bracket 15. The filter element 7 includes a filter screen 701 and a side ring 702. The side ring 702 is fixed to the edge of the filter screen 701. The side ring 702 and the mounting ring 6 are provided with mounting holes at equal intervals. The mounting ring 6 and the side ring 702 are fixed by bolts and nuts. The filter screen 701 is semi-circular in shape. Water entering the gear flow meter 1 will be filtered by the filter screen 701 in the mounting pipe 2, which can smoothly filter out impurities, making the water flow entering the gear flow meter 1 more delicate and effectively reducing the interference of impurities on the gear flow meter 1.

[0027] In this embodiment, the sealing assembly 10 includes a baffle 11, which is located inside the mounting tube 2. A turntable 13 is fixed to the top of the baffle 11 via a shaft, and the turntable 13 is located on the outer wall of the mounting tube 2. A screw 18 is fixed to the bottom of the baffle 11. A sealing plate 14 is slidably disposed inside the mounting sleeve 15. The sealing plate 14 has a central hole, and a screw nut is fixed inside the hole. The screw 18 is adapted to the screw nut.

[0028] In this embodiment, a limiting ring 21 is fixed to the top of the inner wall of the mounting bracket 15. The top of the limiting ring 21 is chamfered, and a sealing gasket 20 is fixed to the bottom of the limiting ring 21. The sealing plate 14 is located below the sealing gasket 20.

[0029] In this embodiment, two symmetrical limiting blocks 16 are fixed on the outer wall of the sealing disc 14, and the inner wall of the mounting bracket 15 is provided with a sliding groove 17 that is adapted to the limiting blocks 16.

[0030] In this embodiment, a connecting plate 19 is fixed to the bottom of the mounting bracket 15, and the sealing plate 14 is located above the connecting plate 19.

[0031] In this embodiment, the bushing connecting the turntable 13 and the sealing assembly 10 is provided with a bearing 12, and the outer wall of the mounting tube 2 is provided with a hole for mounting and fixing the bearing 12.

[0032] In this embodiment, the baffle 11 and the outlet 9 are concentrically arranged, and the inner diameter of the baffle 11 is adapted to that of the mounting pipe 2.

[0033] In this embodiment, an adapter 3 is fixed to one end of the mounting pipe 2 near the gear flow meter 1, and a first flange 4 is fixed to the outer end of the adapter 3. The first flange 4 is fixed to the gear flow meter 1 by bolts and nuts, and a second flange 5 is fixed to one end of the mounting pipe 2 away from the adapter 3.

[0034] It should be noted that the baffle 11 is positioned such that when the sealing disc 14 compresses the sealing gasket 20, the baffle 11 is in the following position. Figure 2-4 When the sealing disc 14 is located at the top of the connecting plate 19, the baffle 11 is in a sealing state.

[0035] Working Principle: The system incorporates a gear flow meter 1, mounting pipe 2, filter element 7, manual valve 8, outlet 9, and sealing assembly 10. During operation, the adapter 3 on the mounting pipe 2 is fixed to the inlet end of the gear flow meter 1 via the first flange 4, and the second flange 5 connects to the pipeline. Water entering the gear flow meter 1 is filtered through the filter screen 701 inside the mounting pipe 2, effectively removing impurities and resulting in a finer water flow, thus reducing interference from impurities. When a large amount of impurities accumulates inside the filter screen 701, the turntable 13 is rotated for easier cleaning, causing the filter to... As the disc 11 rotates, the screw 18 also rotates. Since the sealing disc 14 has a screw nut that matches the screw 18, and the sealing disc 14 slides within the mounting bracket 15 under the action of the limiting block 16, the sealing disc 14 moves downward until it is attached to the top of the connecting plate 19. The baffle 11 then rotates several times to the sealing state. Then, the manual valve 8 connects to the water pipe, and the water enters the mounting pipe 2 to impact the impurities located in the filter screen 701. This causes the water to carry the impurities out of the outlet 9. The baffle 11 has a blocking effect, allowing the water and impurities to be discharged from the outlet 9 effectively. Impurities can be cleaned and discharged without disassembly.

[0036] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A miniature gear flow meter, comprising a gear flow meter (1), characterized in that, The inlet end of the gear flow meter (1) is connected to an installation pipe (2). An installation ring (6) is fixed in the middle of the inner wall of the installation pipe (2), and a filter element (7) is installed at the installation ring (6). A water inlet is opened at the top of the outer wall of the installation pipe (2) near the gear flow meter (1), and a manual valve (8) is fixed at the top of the water inlet. A drain outlet (9) is opened at the bottom of the outer wall of the installation pipe (2) away from the gear flow meter (1). An installation bracket (15) is fixed at the bottom of the drain outlet (9), and a sealing component (10) is installed inside the installation bracket (15).

2. The miniature gear flow meter according to claim 1, characterized in that, The filter element (7) includes a filter screen cover (701) and a side ring (702). The side ring (702) is fixed to the edge of the filter screen cover (701). The side ring (702) and the mounting ring (6) are provided with mounting holes at equal intervals. The mounting ring (6) and the side ring (702) are fixed by bolts and nuts.

3. The miniature circular gear flow meter according to claim 1, characterized in that, The filter screen (701) is semi-circular in shape.

4. The miniature gear flow meter according to claim 1, characterized in that, The sealing assembly (10) includes a baffle (11) located inside the mounting tube (2). A turntable (13) is fixed to the top of the baffle (11) via a shaft, and the turntable (13) is located on the outer wall of the mounting tube (2). A screw (18) is fixed to the bottom of the baffle (11). A sealing disc (14) is slidably disposed inside the mounting sleeve (15). The sealing disc (14) has a central hole, and a screw nut is fixed inside the hole. The screw (18) is adapted to the screw nut.

5. The miniature gear flow meter according to claim 4, characterized in that, A limiting ring (21) is fixed to the top of the inner wall of the mounting bracket (15). The top of the limiting ring (21) is chamfered. A sealing gasket (20) is fixed to the bottom of the limiting ring (21). The sealing disc (14) is located below the sealing gasket (20).

6. The miniature gear flow meter according to claim 5, characterized in that, The outer wall of the sealing disc (14) is fixed with two symmetrical limiting blocks (16), and the inner wall of the mounting bracket (15) is provided with a sliding groove (17) that matches the limiting blocks (16).

7. The miniature gear flow meter according to claim 6, characterized in that, The bottom of the mounting bracket (15) is fixed with a connecting plate (19), and the sealing plate (14) is located above the connecting plate (19).

8. The miniature gear flow meter according to claim 7, characterized in that, The bushing connecting the turntable (13) and the sealing assembly (10) is provided with a bearing (12), and the outer wall of the mounting tube (2) is provided with a hole for mounting and fixing the bearing (12).

9. The miniature gear flow meter according to claim 8, characterized in that, The baffle (11) is concentrically arranged with the outlet (9), and the inner diameter of the baffle (11) is adapted to that of the mounting pipe (2).

10. The miniature circular gear flow meter according to claim 1, characterized in that, An adapter (3) is fixed to one end of the mounting pipe (2) near the gear flow meter (1). A first flange (4) is fixed to the outer end of the adapter (3). The first flange (4) is fixed to the gear flow meter (1) by bolts and nuts. A second flange (5) is fixed to one end of the mounting pipe (2) away from the adapter (3).

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