A flow metering device and method of use

Abstract

The present invention discloses a flow metering device, which relates to the technical field of flow meters, including: a body having a hollow interior, and two opposite sides of the body having openings; a float assembly being arranged inside the body, and the float assembly and the body having the same axis; a welding assembly being located on one side of the body, and the welding assembly being fixedly connected to the body; a filter being located inside the body, and the filter being fixedly connected to the inner wall of the body; a float guide being arranged inside the body, and the float guide and the body having the same circle center; a float stopper being located inside the body, and the float stopper and the body having the same circle center, and a distance being arranged between the float assemblies. The present invention is used to solve the problems in the prior art that the flow meter structure is too complicated, the coupling part often falls off, and the float is easy to absorb the wall, resulting in a decrease in measurement accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of flow meters, and in particular to a flow metering device and a use method thereof. Background Art

[0002] The rotor flowmeter measures fluid flow based on the throttling principle, but it changes the flow area of ​​the fluid to keep the differential pressure above and below the rotor constant, so it is also called a variable flow area constant differential pressure flowmeter, also known as a float flowmeter. In a vertical cone that expands from bottom to top, the gravity of the float with a circular cross-section is borne by the liquid power. The float can rise and fall freely in the cone, move up and down under the action of flow velocity and buoyancy, and after being balanced with the weight of the float, it is transmitted to the dial to indicate the flow through magnetic coupling.

[0003] However, existing rotor flow meters such as Figure 6 As shown, it usually includes: indicator assembly, coupling balance part, support plate, protective cover, sealing ring, gasket, mounting frame, pillar, tube assembly, cylindrical screw, spring and other components. The structure is too complicated, the coupling part often falls off, and the float often gets stuck during operation. This is because when the float moves upward, the magnetism of the float will couple with the bottom of the annular magnet of the shaft, which can easily cause the float to absorb the wall. The coupling failure causes the pointer to remain stationary and the accuracy is reduced. Summary of the invention

[0004] The purpose of the present invention is to provide a flow metering device for solving the problems in the prior art that the flow meter structure is too complicated, the coupling part often falls off, and the float is easy to absorb the wall, resulting in reduced measurement accuracy.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a flow metering device, having an air inlet and an air outlet, wherein the flow metering device includes: a body, the interior of the body is hollow, and the opposite sides of the body are opened; a float assembly, the float assembly is arranged inside the body, and the float assembly and the body are coaxial; a welding assembly, the welding assembly is located on one side of the body, and the welding assembly is fixedly connected to the body; a filter screen, the filter screen is located inside the body, and the filter screen is fixedly connected to the inner wall of the body; a float guide, the float guide is arranged inside the body, and the float guide and the body are coaxial; a float stopper, the float stopper is located inside the body, and the float stopper and the body are coaxial, and a distance is set between the float assembly and the float assembly.

[0006] In the above technical solution, the present invention pushes the float assembly up and down through the fluid medium. During the up and down movement of the float assembly, the float assembly will not get stuck with the tapered tube, thereby improving the measurement accuracy of the fluid medium. At the same time, the above structure maintains high-precision measurement data, and is simpler and easier to process than the existing device structure.

[0007] Further, in an embodiment of the present invention, the body is provided in a circular tube, the float guide is provided in a circular column, the interior of the float guide is hollow, the outer periphery of the float guide is in contact with the inner wall surface of the body, and a distance is provided between the float guide and the filter screen;

[0008] Further, in an embodiment of the present invention, a conical tube is provided on the right side of the float guide, the interior of the conical tube is hollow, the interior of the conical tube is hollow for accommodating the float assembly, and one end of the conical tube is cooperatively connected with one end of the float guide.

[0009] Furthermore, in an embodiment of the present invention, the float stopper is arranged on the right side of the conical tube, one end of the float stopper is arranged in close contact with one end of the float stopper, the circular column on the left end face of the float stopper is inserted into the inner wall of the conical tube for cooperative connection, and the interior of the float stopper is hollow.

[0010] Furthermore, in an embodiment of the present invention, the float assembly slides left and right inside the tapered tube along the extending direction of the tapered tube.

[0011] Furthermore, in an embodiment of the present invention, two welding assemblies are provided, and the welding assemblies are respectively located on opposite sides of the main body, and the welding assemblies are symmetrically arranged.

[0012] Furthermore, in an embodiment of the present invention, the flow metering device further includes: an indicator portion, which is disposed on the outside of the main body, the indicator portion is fixedly connected to the main body, and the indicator portion is used to display measurement data.

[0013] Furthermore, in an embodiment of the present invention, the indicating part includes: a base body, the interior of the base body is hollow, the base body is arranged on the outside of the main body, and the base body is fixedly connected to the main body; a box cover, the box cover is arranged above the base body, and the box cover is fixedly connected to the base body; and an end cover, the end cover is arranged on the left side of the base body, and the end cover is fixedly connected to the base body.

[0014] Furthermore, in an embodiment of the present invention, the box cover is fixedly connected to the base through a gasket, a window glass is provided at the connection between the box cover and the base, and the window glass is transparent; the end cover is fixedly connected to the base through a seal, a terminal block is provided on the right side of the end cover, the terminal block is located inside the base, and the terminal block is fixedly connected to the base; a support column is provided below the window glass, the support column is fixedly connected to the inside of the base, a scale plate is provided on the upper surface of the support column, the scale plate is fixedly connected to the support, and a There is a pointer, and a shaft bearing assembly is arranged inside the base; the shaft bearing assembly is fixedly connected to the base, the shaft bearing assembly is located below the scale plate, a pointer seat is arranged inside the shaft bearing assembly, the pointer seat is fixedly connected to the shaft bearing assembly, the pointer seat is fixedly connected to the pointer, a clamp is also arranged inside the base, the clamp is located below the scale plate, a mounting plate is arranged below the clamp, a spacing is left between the mounting plate and the clamp, the mounting plate and the clamp are connected through a mounting support, and the mounting support connects the mounting plate to the clamp through a nut.

[0015] Furthermore, in an embodiment of the present invention, a glass pressing plate is provided at the connection between the box cover and the window glass, and a glass locking plate is provided below the window glass, and the glass locking plate is used to fix the window glass; the scale plate is fixedly connected to the support column by fixing screws; and a mounting pillar is provided on the outer side of the main body, and the mounting pillar is fixedly connected to the base.

[0016] The embodiment of the present invention also discloses a method for using a flow metering device, comprising the following steps:

[0017] Connect the external water pipe to the surface of the welding assembly, and the liquid flows from the water inlet into the inside of the float guide, driving the float assembly to slide up and down along the inside of the tapered tube;

[0018] After the float assembly is displaced, the pointer of the indicating part is rotated by the shaft assembly, and the pointer rotates on the surface of the scale plate to indicate data and obtain measurement data.

[0019] Further, in an embodiment of the present invention, the indication data is obtained according to a movement ratio of the float assembly.

[0020] The beneficial effects of the present invention are:

[0021] The float assembly is pushed up and down by the fluid medium. During the up and down movement of the float assembly, the float assembly will not get stuck with the tapered tube, thereby improving the measurement accuracy of the fluid medium. At the same time, the above structure is simpler and easier to process than the existing device structure while maintaining high-precision measurement data. The existing device structure is complex and difficult to process, and the coupling part often falls off, causing the float to get stuck for a long time when working. The coupling failure causes the pointer to not move and cannot achieve an accuracy of 3%. In addition, the existing device is difficult to repair due to the complex assembly structure after a problem occurs, which easily leads to unstable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the internal part of the flow metering device according to an embodiment of the present invention.

[0023] Figure 2 It is a left side view of the flow metering device according to an embodiment of the present invention.

[0024] Figure 3 It is an internal cross-sectional view of a flow metering device according to an embodiment of the present invention.

[0025] Figure 4 Schematic diagram of a float assembly of a flow metering device according to an embodiment of the present invention.

[0026] Figure 5 It is a cross-sectional view of the indicator portion of the flow metering device according to the embodiment of the present invention.

[0027] Figure 6 It is a schematic diagram of an existing metering device.

[0028] In the attached figure

[0029] 1. Welding assembly 2. Retaining ring 3. Filter

[0030] 4. Press sleeve 5. Float guide 6. Float assembly

[0031] 7. Conical tube 8. Float stopper 9. Support pillar

[0032] 10. Indicator 101, box cover 102, gasket

[0033] 103, window glass 104, pointer seat 105, fixing screw

[0034] 106, glass pressing piece 107, glass locking piece 108, scale plate

[0035] 109, substrate 1010, sealing member 1011, end cap

[0036] 1012, terminal block 1013, mounting plate 1014, clamp

[0037] 1015, mounting support 1016, nut 1017, pointer

[0038] 1018, support column 1019, shaft bearing assembly DETAILED DESCRIPTION

[0039] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] For the purpose of simplicity and illustration, the principles of the embodiments are described mainly by reference to examples. In the following description, many specific details are presented to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known flow calculation methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0043] Embodiment 1:

[0044] like Figure 1 ,2 As shown in Figures 3, 4 and 5, this embodiment discloses a flow metering device, having an air inlet and an air outlet, including: a main body that is hollow inside and has openings on opposite sides of the main body; a float assembly 6 that is arranged inside the main body, and the float assembly 6 and the main body are coaxial; a welding assembly 1, which is located on one side of the main body and is fixedly connected to the main body; a filter screen 3 that is located inside the main body and is fixedly connected to the inner wall of the main body; a float guide 5 that is arranged inside the main body, and the float guide 5 and the main body are cocentric; a float stopper 8 that is located inside the main body, and the float stopper 8 and the main body are cocentric, and a spacing is provided between the float assemblies 6.

[0045] The float assembly 6 is pushed up and down by the fluid medium. During the up and down movement of the float assembly 6, the float assembly 6 will not be stuck with the tapered tube 7, thereby improving the measurement accuracy of the fluid medium. At the same time, the above-mentioned structure is simpler and easier to process than the existing device structure while maintaining high-precision measurement data.

[0046] Specifically, the body is set in a round tube, the float guide 5 is set in a round column, the inside of the float guide 5 is hollow, the outer periphery of the float guide 5 is in contact with the inner wall of the body, and a distance is set between the float guide 5 and the filter 3; a retaining ring 2 is set on the left side of the filter 3, the retaining ring 2 is set in a round shape, and the outer periphery of the retaining ring 2 is fixedly connected to the inner wall of the body; a pressing sleeve 4 is set on the right side of the filter 3, the pressing sleeve 4 is set in a round shape, and a circular groove is set on the surface of the pressing sleeve 4, the circular groove is matched with the filter 3, and a through hole is opened on the surface of the circular groove of the pressing sleeve 4, and the outer periphery of the pressing sleeve 4 is matched with the inner wall of the body. The float assembly is set in a round shape, which is the same shape as the inner wall of the conical tube and the float guide. The float assembly 6 uses a micro float through fluid calculation, and the magnetic flux strength reaches 1250-1350MT. The magnet material is made of high-strength magnetic ALNiCO material, and the bottom annular magnet of the indicator part is made of weak magnetic war-grade aluminum-iron-boron material. The special annular structure greatly achieves the characteristic of weak magnetism, eliminating the characteristic of the float assembly 6 sucking the wall due to strong magnetism.

[0047] Specifically, a conical tube 7 is provided on the right side of the float guide 5. The inside of the conical tube 7 is hollow. The inside of the conical tube 7 is used to accommodate the float assembly 6. One end of the conical tube 7 is connected with one end of the float guide 5. The conical tube 7 adopts the wire-cutting process to ensure the accuracy. The float assembly 6 is laser welded after fine machining. The flow calculation accuracy of the float assembly 6, the conical tube 7, and the indicator 10 can reach more than 3%. The float assembly 6 slides up and down in the conical tube 7. Since the conical tube adopts the wire-cutting process, the float assembly 6 will not get stuck with the inner wall of the conical tube 7 during use.

[0048] Specifically, a float stopper 8 is provided on the right side of the conical tube 7, one end of the float stopper 8 is fitted with one end of the float stopper 8, the circular column on the left end face of the float stopper 8 is inserted into the inner wall of the conical tube 7 for cooperative connection, and the interior of the float stopper 8 is hollow.

[0049] Specifically, the float assembly 6 slides left and right inside the tapered tube 7 along the extending direction of the tapered tube 7 .

[0050] Specifically, two welding assemblies 1 are provided, and the welding assemblies 1 are respectively located on two opposite sides of the body, and the welding assemblies 1 are symmetrically arranged.

[0051] Specifically, the flow metering device further includes: an indicator part 10, which is arranged outside the main body and fixedly connected to the main body. The indicator part 10 is used to display the measurement data.

[0052] Specifically, the indicating part 10 includes: a base 109 having a hollow interior, the base 109 is arranged on the outside of the main body, and the base 109 is fixedly connected to the main body; a box cover 101 is arranged above the base 109, and the box cover 101 is fixedly connected to the base 109; an end cover 1011 is arranged on the left side of the base 109, and the end cover 1011 is fixedly connected to the base 109.

[0053] Specifically, the box cover 101 is fixedly connected to the base 109 by a gasket 102, and a window glass 103 is arranged at the connection between the box cover 101 and the base 109, and the window glass 103 is arranged transparently; the end cover 1011 is fixedly connected to the base 109 by a seal 1010, and a terminal block 1012 is arranged on the right side of the end cover 1011, and the terminal block 1012 is located inside the base 109, and the terminal block 1012 is fixedly connected to the base 109; a support column 1018 is arranged below the window glass 103, and the support column 1018 is fixedly connected to the inside of the base 109, and a scale plate 108 is arranged on the upper surface of the support column 1018, and the scale plate 108 is fixedly connected to the support, and a pointer 1017 is arranged above the scale plate 108, and a shaft bearing assembly is arranged inside the base 109. Part 1019; the bearing assembly 1019 is fixedly connected to the base 109, the bearing assembly 1019 is located below the scale plate 108, a pointer 1017 seat 104 is provided inside the bearing assembly 1019, the pointer 1017 seat 104 is fixedly connected to the bearing assembly 1019, the pointer 1017 seat 104 is fixedly connected to the pointer 1017, a clamping member 1014 is also provided inside the base 109, the clamping member 1014 is located below the scale plate 108, a mounting plate 1013 is provided below the clamping member 1014, a spacing is left between the mounting plate 1013 and the clamping member 1014, the mounting plate 1013 and the clamping member 1014 are connected via mounting pillars 1015, and the mounting pillars 1015 connect the mounting plate 1013 and the clamping member 1014 via nuts 1016.

[0054] Specifically, a glass pressing piece 106 is provided at the connection between the box cover 101 and the window glass 103, and a glass locking piece 107 is provided below the window glass 103, and the glass locking piece 107 is used to fix the window glass 103; the scale plate 108 and the support column 1018 are fixedly connected by fixing screws 105; a receiving pillar 9 is provided on the outer side of the main body, and the receiving pillar 9 is fixedly connected to the base 109.

[0055] The float assembly 6 is pushed up and down by the fluid medium. During the up and down movement of the float assembly 6, the float assembly 6 will not be stuck with the tapered tube 7, thereby improving the measurement accuracy of the fluid medium. At the same time, the above-mentioned structure is simpler and easier to process than the existing device structure while maintaining high-precision measurement data. The existing device structure is complex and difficult to process, and the coupling part often falls off, causing the float to get stuck for a long time when working. The coupling failure causes the pointer to not move and cannot achieve an accuracy of 3%. In addition, the existing device is difficult to repair due to the complex assembly structure after a problem occurs, which easily leads to unstable use.

[0056] Finally, a method for using a flow metering device is provided, comprising the following steps:

[0057] Connect an external water pipe, connect the water inlet pipe and the water outlet pipe on the surface of the two welding components 1 respectively, insert screws to fix the welding components and the water pipe. At this time, the user opens the liquid valve, and the liquid flows from the water inlet pipe into the float guide 5 and then into the conical tube 7, driving the float component 6 to move upward, and the float component 6 drives the pointer to rotate. During the entire rising process, the float component 6 always moves vertically upward, and the pointer coincides with the mark on the scale plate. Then the user records the data, and the liquid flows out from the water outlet pipe. When the user finishes the detection, the liquid valve is closed, and the float component 6 falls back to complete the measurement.

[0058] After the float assembly 6 is displaced, the pointer 1017 of the indicating part 10 is rotated by the shaft assembly 1019, and the pointer 1017 rotates on the surface of the scale plate 108 to indicate data and obtain measurement data.

[0059] Specifically, the metering data is obtained according to the movement ratio of the float assembly 6 .

[0060] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, all inventions and creations using the concepts of the present invention are protected.

Claims

1. A flow metering device having an air inlet and an air outlet, wherein: The flow metering device comprises: A body, wherein the interior of the body is hollow, and two opposite sides of the body are opened; A float assembly, wherein the float assembly is arranged inside the body, and the float assembly and the body are coaxial; A welding assembly, the welding assembly is located on one side of the body, and the welding assembly is fixedly connected to the body; A filter screen, the filter screen is located inside the body, and the filter screen is fixedly connected to the inner wall of the body; A float guide, wherein the float guide is arranged inside the body, and the float guide and the body have the same center; A float stopper, the float stopper is located inside the body, the float stopper and the body are co-centered, and a distance is provided between the float stopper and the float assembly; The body is configured as a round tube, the float guide is configured as a round column, the interior of the float guide is hollow, the outer periphery of the float guide is in contact with the inner wall surface of the body, and a distance is provided between the float guide and the filter screen; A conical tube is arranged on the right side of the float guide, the interior of the conical tube is hollow, the interior of the conical tube is hollow for accommodating the float assembly, and one end of the conical tube is matched and connected with one end of the float guide; The tapered tube adopts a slow wire-cutting process; The float stopper is arranged on the right side of the conical tube, one end of the float stopper is fitted with one end of the conical tube, the circular column on the left end face of the float stopper is inserted into the inner wall of the conical tube for matching connection, and the interior of the float stopper is hollow.

2. A flow metering device according to claim 1, wherein: The float assembly slides left and right inside the tapered tube along the extending direction of the tapered tube.

3. A flow metering device according to claim 1, wherein: Two welding assemblies are provided, and the welding assemblies are respectively located on two opposite sides of the main body, and the welding assemblies are symmetrically arranged.

4. A flow metering device according to claim 1, wherein: The flow metering device also includes: An indicating part is arranged on the outside of the main body, the indicating part is fixedly connected to the main body, and the indicating part is used to display measurement data.

5. A flow metering device according to claim 4, wherein: The indicating unit comprises: A base body, wherein the inside of the base body is hollow, the base body is arranged outside the main body, and the base body is fixedly connected to the main body; A box cover, which is arranged above the base and is fixedly connected to the base; The end cover is arranged on the left side of the base body and is fixedly connected to the base body.

6. A flow metering device according to claim 5, wherein: The box cover is fixedly connected to the base through a gasket, and a window glass is provided at the connection between the box cover and the base, and the window glass is transparent; The end cover is fixedly connected to the base through a seal, a terminal block is provided on the right side of the end cover, the terminal block is located inside the base, and the terminal block is fixedly connected to the base; A support column is arranged below the window glass, the support column is fixedly connected to the inside of the base, a scale plate is arranged on the upper surface of the support column, the scale plate is fixedly connected to the support, a pointer is arranged above the scale plate, and a shaft bearing assembly is arranged inside the base; The bearing assembly is fixedly connected to the base, and the bearing assembly is located below the scale plate. A pointer seat is provided inside the bearing assembly, and the pointer seat is fixedly connected to the bearing assembly, and the pointer seat is fixedly connected to the pointer. A clamp is also provided inside the base, and the clamp is located below the scale plate. A mounting plate is provided below the clamp, and a spacing is left between the mounting plate and the clamp. The mounting plate and the clamp are connected through mounting pillars, and the mounting pillars connect the mounting plate and the clamp through nuts.

7. A flow metering device according to claim 6, wherein: A glass pressing piece is provided at the connection between the box cover and the window glass, and a glass locking piece is provided below the window glass, and the glass locking piece is used to fix the window glass; The scale plate is fixedly connected to the support column by fixing screws; The outer side of the main body is provided with a mounting support, and the mounting support is fixedly connected to the base.

8. A method for using a flow metering device, the method for using the flow metering device being based on a flow metering device according to any one of claims 1 to 7, comprising the following steps: Connect the external water pipe to the surface of the welding assembly, and the liquid flows from the water inlet into the inside of the float guide, driving the float assembly to slide up and down along the inside of the tapered tube; After the float assembly is displaced, the pointer of the indicating part is rotated by the shaft assembly, and the pointer rotates on the surface of the scale plate to indicate data and obtain measurement data.

9. A method for using a flow metering device according to claim 8, wherein: The metering data is obtained based on the movement ratio of the float assembly.

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