Metal tube float flowmeter capable of enabling fluid to circulate smoothly

Abstract

The utility model relates to the technical field of flow meters, in particular to a metal tube float flow meter capable of smoothly circulating fluid, which comprises a backstop fixedly mounted in a fluid channel of the flow meter, and the backstop comprises a guide hole for allowing a float guide rod to pass through and guiding the float guide rod; the guide hole comprises a plurality of convex cambered surfaces and concave cambered surfaces which are alternately arranged in sequence, and the floater guide rod floats in a space formed by the convex cambered surfaces; and a circulating hole is formed between the concave arc surface and the floater guide rod. According to the utility model, the guide hole is composed of a plurality of convex cambered surfaces and concave cambered surfaces which are alternately arranged in sequence, so that fluid with scraps and impurities or large-particle solids can smoothly circulate through the circulating hole, the large-particle solids or scraps are prevented from being clamped in the guide hole, and the influence on the up-down floating of the floater guide rod in the guide hole is avoided; the floater can smoothly float in the fluid to measure the flow velocity of the fluid, and the accuracy of the flow velocity of the fluid measured according to the floating condition of the floater is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of flow meter technology, specifically to a metal tube float flow meter that allows fluid to flow smoothly. Background Technology

[0002] Metal tube float flowmeters are typically installed between pipe sections and detect fluid velocity by the float bobbing up and down in a stop by a float guide rod.

[0003] In existing technology, the connection between the float guide rod and the stop has a narrow gap. If there are debris or large solid particles in the fluid, they will get stuck in the gap, causing the float guide rod to jam. This prevents the float from floating up and down according to the fluid flow, thus making it impossible to accurately detect the fluid velocity. If large solid particles move quickly through the narrow gap with the fluid flow, they will cause some damage to the surface of the stop and the float guide rod, affecting the service life of the float flowmeter. Utility Model Content

[0004] Given that existing technologies suffer from the problem that debris or large solid particles in the fluid can get stuck in the gap between the float guide rod and the stop, causing the float guide rod and float to be unable to move up and down with the fluid, thus affecting the accuracy of the float flow meter, this utility model aims to provide a metal tube float flow meter that allows for smooth fluid flow.

[0005] This utility model provides a metal tube float flowmeter that allows smooth fluid flow, including a stop fixedly installed in the fluid channel of the flowmeter. The stop includes a guide hole for guiding the float guide rod through a guide rod. The guide hole includes a plurality of alternating convex and concave arc surfaces. The float guide rod floats within the space formed by the plurality of convex arc surfaces. A flow hole is formed between the concave arc surface and the float guide rod.

[0006] Furthermore, there are five convex and five concave arc surfaces.

[0007] Furthermore, the radial distance between the concave arc surface and the float guide rod is 10mm~100mm.

[0008] Furthermore, the stop includes a second hollow mounting plate installed on the fluid inlet / fluid outlet, a first hollow mounting plate sleeved on the float guide rod, and a plurality of connecting plates connecting the first hollow mounting plate and the second hollow mounting plate; the guide hole is provided in the first hollow mounting plate.

[0009] Furthermore, the middle section of the fluid channel used to accommodate the float is a tapered channel, with the wider end of the tapered channel facing the fluid inlet.

[0010] Furthermore, the outer edge of the second hollow mounting plate is inserted into the inner wall of the flow meter housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model patent designs the guide hole as being composed of multiple alternating convex and concave arc surfaces. This allows fluid carrying debris or large solid particles to flow smoothly through the flow hole formed between the concave arc surface and the float guide rod, preventing large solid particles or debris from getting stuck in the guide hole. This avoids affecting the up-and-down floating of the float guide rod within the guide hole, ensuring that the float, which is fixedly installed on the float guide rod, can float smoothly in the fluid to measure the fluid velocity. This further ensures the accuracy of the fluid velocity measured by the float's floating behavior.

[0013] The description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a cross-sectional view of a metal tube float flowmeter.

[0016] Figure 2 This is a first-person perspective structural diagram to indicate the blocker.

[0017] Figure 3 This is a second-view structural diagram for blocking.

[0018] Figure 4 This is a cross-sectional structural diagram of the first mounting plate.

[0019] The diagram labels are: 1. Shell; 2. Fluid channel; 21. Middle section;

[0020] 3. Fluid inlet; 4. Fluid outlet; 5. Stop; 51. Guide hole; 511. Convex arc surface; 512. Concave arc surface; 52. Flow hole; 54. Second hollow mounting plate; 55. First hollow mounting plate; 56. Connecting plate; 6. Float guide rod; 7. Float. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 component 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.

[0024] Please refer to Figures 1-4 This utility model provides a metal tube float flow meter that allows smooth fluid flow, including a housing 1, a fluid channel 2 disposed inside the housing 1 for fluid passage, a fluid inlet 3 opened at the top of the fluid channel 2, a fluid outlet 4 opened at the bottom of the fluid channel 2, a float guide rod 6 disposed in the fluid channel 2 by a stop 5, and a float 7 fixedly installed on the float guide rod 6 for detecting the fluid buoyancy.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, the stop 5 is fixedly installed in the fluid channel 2 of the flow meter. The stop 5 includes a guide hole 51 through which the float guide rod 6 passes to guide the float guide rod 6. The guide hole 51 includes a plurality of convex arc surfaces 511 and concave arc surfaces 512 arranged alternately in sequence. The float guide rod 6 floats in the space formed by the plurality of convex arc surfaces 511. A flow hole 52 is formed between the concave arc surface 512 and the float guide rod 6.

[0026] This invention configures the guide hole 51 as composed of multiple alternating convex arc surfaces 511 and concave arc surfaces 512, allowing fluid carrying debris or large solid particles to flow smoothly through the flow hole 52 formed between the concave arc surface 512 and the float guide rod 6. This prevents large solid particles or debris from getting stuck in the guide hole 51, thus avoiding affecting the up-and-down floating of the float guide rod 6 within the guide hole 51. This ensures that the float 7, fixedly installed on the float guide rod 6, can float smoothly in the fluid to measure the fluid velocity, further guaranteeing the accuracy of the fluid velocity measured by the floating of the float 7.

[0027] In this embodiment, mounting flanges are provided at both the upper and lower ends of the housing 1. The housing 1 is installed in the pipe section where the fluid flow rate needs to be detected through the mounting flanges. The fluid flows in from the fluid inlet 3, flows in the fluid channel 2 and drives the float guide rod 6 to move downward. The float 7, which is fixedly installed on the float guide rod 6, also moves downward. Since the float 7 has buoyancy, it can drive the float guide rod 6 to move upward in the flowing fluid. The fluid flow rate in the fluid channel 2 can be measured by the movement rate of the float 7 in the fluid.

[0028] Furthermore, both fluid inlet 3 and fluid outlet 4 are equipped with stops 5, and the two ends of the float guide rod 6 are respectively inserted into the guide holes 51 of the two stops 5. Fluid flows in from fluid inlet 3 and flows through the flow hole 52 on the side of fluid inlet 3. At this time, if there are some large solid particles or impurities in the fluid, they can still flow smoothly through the flow hole 52. The flow of water drives the float guide rod 6 to move downward. At this time, the fluid flows through the flow hole 52 on the side of fluid outlet 4 and finally flows out of the shell 1 through fluid outlet 4. The flow rate of the fluid is obtained by measuring the upward movement of the float 7.

[0029] To further clarify, there are five convex arc surfaces 511 and five concave arc surfaces 512.

[0030] Furthermore, the radial distance between the concave arc surface 512 and the float guide rod 6 is 10mm~100mm.

[0031] like Figure 2 and Figure 3 As shown, the stop 5 includes a second hollow mounting plate 54 installed on the fluid inlet 3 / fluid outlet 4, a first hollow mounting plate 55 sleeved on the float guide rod 6, and a plurality of connecting plates 56 connecting the first hollow mounting plate 55 and the second hollow mounting plate 54; a guide hole 51 is provided in the first hollow mounting plate 55; the outer edge of the second hollow mounting plate 54 is inserted into the inner wall of the flowmeter housing 1.

[0032] In this embodiment, since both the fluid inlet 3 and the fluid outlet 4 are provided with a stop 5, the fluid flows in from the fluid inlet 3, flows through the cavity in the second hollow mounting plate 54 on the side of the fluid inlet 3, then flows through the guide hole 51 in the first hollow mounting plate 55 on the side of the fluid inlet 3, then flows through the first hollow mounting plate 55 and the second hollow cover plate on the side of the fluid outlet 4, and finally flows out from the fluid outlet 4.

[0033] Furthermore, the middle section 21 of the fluid channel 2, which is used to accommodate the float 7, is a conical channel. The larger end of the conical channel faces the fluid inlet 3. When the fluid flows into the fluid channel 2, it drives the float guide rod 6 to move in the direction of fluid flow, causing the float 7 to be stuck against the inner wall of the conical channel. The inner wall of the conical channel then provides a reaction force to the float 7 in the opposite direction of water flow, which can accelerate the upward floating speed of the float 7 under its own buoyancy, thus improving the efficiency of measuring fluid flow velocity.

[0034] Furthermore, both the first hollow mounting plate 5571 and the second hollow mounting plate 5472 are circular plates. The diameter of the first hollow mounting plate 55 is smaller than that of the second hollow mounting plate 54, which allows for smoother fluid flow.

[0035] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A metal tube float flowmeter in which fluid flows smoothly, characterized by, The device includes a stop (5) fixedly installed in the fluid channel (2) of the flow meter. The stop (5) includes a guide hole (51) through which the float guide rod (6) passes to guide the float guide rod (6). The guide hole (51) includes a plurality of convex arc surfaces (511) and concave arc surfaces (512) arranged alternately in sequence. The float guide rod (6) floats in the space formed by the plurality of convex arc surfaces (511). A flow hole (52) is formed between the concave arc surface (512) and the float guide rod (6).

2. The flow-straightening metal tube float flowmeter of claim 1, wherein, There are 5 convex arc surfaces (511) and 5 concave arc surfaces (512).

3. The flow-straightening metal tube float flowmeter of claim 1 wherein, The radial distance between the concave arc surface (512) and the float guide rod (6) is 10mm~100mm.

4. The flow-straightening metal tube float flowmeter of claim 1 wherein, The stop (5) includes a second hollow mounting plate (54) installed on the fluid inlet (3) / fluid outlet (4), a first hollow mounting plate (55) sleeved on the float guide rod (6), and a plurality of connecting plates (56) connecting the first hollow mounting plate (55) and the second hollow mounting plate (54); the guide hole (51) is provided on the first hollow mounting plate (55).

5. The flow-straightening metal tube float flowmeter of claim 1 wherein, The middle section (21) of the fluid channel (2) used to accommodate the float (7) is a conical channel, with the larger end of the conical channel facing the fluid inlet (3).

6. The flow-straightening metal tube float flowmeter of claim 4 wherein, The outer edge of the second hollow mounting plate (54) is inserted into the inner wall of the flow meter housing (1).

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