Combined float flowmeter

Abstract

The utility model relates to the technical field of float flowmeters, and discloses a combined float flowmeter which comprises a mounting seat, a mounting groove, a feeding fork pipe, a discharging fork pipe, a main feeding pipe, a main discharging pipe, a float flowmeter, a lower connecting pipe, an upper connecting pipe, a switch valve, a one-way valve and a pressing assembly. By the adoption of the installation structure, the float flowmeters with different measuring ranges and different numbers can be detachably connected in the installation groove according to specific needs, and therefore the multiple float flowmeters can work in series, and occupied space of the installation length is reduced; on-off control over fluid on different feeding branch pipes can be achieved through the switching valves, so that independent use or joint work of the float flowmeters is achieved, different flow monitoring is conducted through different float flowmeters, and the monitoring precision is guaranteed; through the arrangement of the pressing assembly, the joint of the upper connecting pipe and the discharging fork pipe or the joint of the lower connecting pipe and the feeding fork pipe can be pressed, and separation is prevented; and meanwhile, the one-way valve is arranged, so that fluid backflow at the discharging fork pipe can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of float flowmeters, and particularly relates to a combined float flowmeter. Background Technique

[0002] A float flowmeter, also known as a rotameter, is a commonly used flow measurement instrument, which consists of a conical circular tube with an inner diameter expanding upward and a float that floats up and down in the tube according to the flow rate of the measured medium. The float flowmeter has the advantages of simple structure, low cost, stable operation, high reliability, and small throttling pressure loss. In particular, it can measure the small flow rate of media with low Reynolds numbers. Therefore, it is widely used in the flow measurement and automatic control systems of liquids and gases in industrial fields such as petroleum, chemical industry, semiconductor, metallurgy, light chemical industry, and food hygiene. The range ratio is an important parameter of the flowmeter. The meaning of the range ratio is the ratio of the maximum flow rate value to the minimum flow rate value that can be measured under the premise of ensuring the accuracy of the flowmeter. Usually, by connecting float flowmeters with different range ratios in series, the range ratio can be increased and the measurement blind area can be reduced. However, when set in series, the required straight pipe section length will increase, occupying a large space, and the float flowmeters are all set on pipes with the same diameter, resulting in low accuracy for monitoring very small flow rates. Content of the Utility Model

[0003] The utility model mainly provides a combined float flowmeter to solve the problems that when set in series, the required straight pipe section length will increase, occupying a large space, and the float flowmeters are all set on pipes with the same diameter, resulting in low accuracy for monitoring very small flow rates.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A combined float flowmeter includes a mounting seat, a plurality of mounting slots are provided on the mounting seat, a feed fork tube and a discharge fork tube are provided on each mounting slot, a plurality of the feed fork tubes are connected to a main feed tube, and a plurality of the discharge fork tubes are connected to a main discharge tube; a float flowmeter is detachably connected in each mounting slot, a lower connecting pipe connected to the feed fork tube is provided at the lower end of the float flowmeter, and an upper connecting pipe connected to the discharge fork tube is provided at the upper end of the float flowmeter; a switch valve is provided on each of the feed fork tubes, and a one-way valve is provided on each of the discharge fork tubes; a clamping assembly for clamping the upper connecting pipe and the lower connecting pipe is provided on the mounting seat. Among them, a plurality refers to at least three. By adopting the structure of the present application, float flowmeters of different ranges and different numbers can be detachably connected in the installation groove according to specific needs, so that multiple float flowmeters can be connected in series and the space occupied by the installation length can be reduced; the switch valve can be used to realize the switch control of the fluid on different feed fork pipes, so that the float flowmeter can be used alone or work together, so that different float flowmeters can be used to monitor different flow rates to ensure monitoring accuracy; and the setting of the clamping assembly can clamp the connection between the upper connecting pipe and the discharge fork pipe or the lower connecting pipe and the feed fork pipe to prevent detachment; at the same time, the setting of the one-way valve can avoid fluid backflow at the discharge fork pipe.

[0006] Furthermore, a connecting plate is provided on the mounting seat corresponding to both sides of the mounting groove, a side through groove is provided on the connecting plate, a connecting hole is provided on the side plate of the float flowmeter, and a bolt matching the side through groove is threadedly connected in the connecting hole. With this structure, after the connection between the upper pipe and the discharge fork pipe or the lower pipe and the feed fork pipe is compressed by the compression assembly, the bolt is passed through the side through groove and threadedly connected in the connecting hole, thereby realizing the disassembly, assembly and fixation of the float flowmeter.

[0007] Furthermore, a guide protrusion is provided on the side plate of the float flowmeter, and a guide groove matching the guide protrusion is provided on the connecting plate. With this structure, when installing the float flowmeter, the guide protrusion can be matched with the guide groove to achieve guide limiting, so that disassembly and assembly can be performed better.

[0008] Furthermore, the lower pipe is plugged into the feed fork pipe, the upper pipe is plugged into the discharge fork pipe, the feed fork pipe and the discharge fork pipe are both provided with plug-in limit platforms, and the ends of the lower pipe and the upper pipe are both provided with sealing rings. With this structure, the upper pipe can be plugged into the discharge fork pipe, the lower pipe can be plugged into the feed fork pipe, and the ends of the lower pipe and the upper pipe are both provided with sealing rings and abut against their respective corresponding plug-in limit platforms, thereby achieving better sealing, and the overall connection structure is simple and practical.

[0009] Furthermore, the clamping assembly includes screws arranged on both sides of the connection of the feed fork tube or the discharge fork tube, and a pressing plate is slidably sleeved on the two screws, and a nut for clamping the pressing plate is threadedly connected on the screws. With this structure, after the upper pipe and the lower pipe are initially aligned and plugged, the pressing plate and the nut can be used to clamp the two pipes, thereby achieving the clamping of the connection between the two pipes, so that the two pipes are not easily separated during use.

[0010] Beneficial effects: By adopting the structure of the present application, float flowmeters of different ranges and different numbers can be detachably connected in the installation groove according to specific needs, so that multiple float flowmeters can be connected in series and the space occupied by the installation length can be reduced; the switch valve can be used to realize the switch control of the fluid on different feed fork pipes, so that the float flowmeter can be used alone or work together, so that different float flowmeters can be used to monitor different flow rates to ensure monitoring accuracy; and the setting of the clamping assembly can clamp the connection between the upper connecting pipe and the discharge fork pipe or the lower connecting pipe and the feed fork pipe to prevent detachment; at the same time, the setting of the one-way valve can avoid fluid backflow at the discharge fork pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view schematic diagram of the mounting base of this embodiment;

[0012] Figure 2 is a side cross-sectional schematic diagram of the mounting base of this embodiment;

[0013] Figure 3 Schematic diagram of the screw rod of this embodiment.

[0014] Figure numerals: mounting seat 1, feed fork tube 2, discharge fork tube 3, main feed tube 4, main discharge tube 5, lower connecting tube 6, upper connecting tube 7, switch valve 8, one-way valve 9, connecting plate 10, bolt 11, guide protrusion 12, sealing ring 13, screw 14, pressure plate 15. DETAILED DESCRIPTION

[0015] The technical solution of a combined float flowmeter involved in the utility model will be further described in detail below in conjunction with an embodiment.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0017] like Figure 1 ,Figure 2 , Figure 3 As shown in Figure 3 , a combined float flowmeter according to this embodiment includes a mounting base 1, and a plurality of mounting grooves are provided on the mounting base 1. A feeding fork pipe 2 and a discharging fork pipe 3 are provided on each mounting groove. A plurality of the feeding fork pipes 2 are communicated with a main feeding pipe 4, and a plurality of the discharging fork pipes 3 are communicated with a main discharging pipe 5. A float flowmeter is detachably connected in each mounting groove. A lower connecting pipe 6 communicating with the feeding fork pipe 2 is provided at the lower end of the float flowmeter, and an upper connecting pipe 7 communicating with the discharging fork pipe 3 is provided at the upper end of the float flowmeter. A switching valve 8 is provided on each feeding fork pipe 2, and a check valve 9 is provided on each discharging fork pipe 3. A pressing assembly for pressing the upper connecting pipe 7 and the lower connecting pipe 6 is provided on the mounting base 1. Connecting plates 10 are provided on the mounting base 1 corresponding to both sides of the mounting groove. Side through grooves are provided in the connecting plates 10. Connecting holes are provided on the side plates of the float flowmeter, and bolts 11 matching the side through grooves are threadedly connected in the connecting holes. Guide protrusions 12 are provided on the side plates of the float flowmeter, and guide grooves matching the guide protrusions 12 are provided in the connecting plates 10. The lower connecting pipe 6 is inserted into the feeding fork pipe 2, and the upper connecting pipe 7 is inserted into the discharging fork pipe 3. Insertion limiting platforms are provided in both the feeding fork pipe 2 and the discharging fork pipe 3, and sealing rings 13 are provided at the ends of both the lower connecting pipe 6 and the upper connecting pipe 7. The pressing assembly includes screws 14 provided on both sides of the connection of the feeding fork pipe 2 or the discharging fork pipe 3. A pressing plate 15 is slidably sleeved on the two screws 14, and nuts for pressing the pressing plate 15 are threadedly connected to the screws 14. With the structure of this application, different-range and different-number float flowmeters can be detachably connected in the mounting groove according to specific needs, so as to realize the series operation of multiple float flowmeters, reducing the space occupied by the installation length; the switching valve 8 can be used to control the opening and closing of the fluid on different feeding fork pipes 2, so as to realize the individual use or common operation of the float flowmeters, and different float flowmeters are used to monitor different flow rates to ensure the monitoring accuracy; and the setting of the pressing assembly can press the connection between the upper connecting pipe 7 and the discharging fork pipe 3 or the lower connecting pipe 6 and the feeding fork pipe 2 to prevent disconnection; at the same time, the setting of the check valve 9 can prevent the fluid at the discharging fork pipe 3 from flowing back.

[0018] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined float flowmeter, characterized in that: It includes a mounting base, multiple mounting grooves are formed on the mounting base, a feeding fork tube and a discharging fork tube are arranged on each mounting groove, multiple feeding fork tubes are communicated with a main feeding pipe, and multiple discharging fork tubes are communicated with a main discharging pipe; a rotameter is detachably connected in each mounting groove, a lower connecting pipe communicating with the feeding fork tube is arranged at the lower end of the rotameter, and an upper connecting pipe communicating with the discharging fork tube is arranged at the upper end of the rotameter; a switching valve is arranged on each feeding fork tube, and a check valve is arranged on each discharging fork tube; a pressing assembly for pressing the upper connecting pipe and the lower connecting pipe is arranged on the mounting base.

2. The combined float flowmeter according to claim 1, wherein: Connection plates are arranged on the mounting base corresponding to both sides of the mounting groove, side through grooves are formed in the connection plates, connection holes are formed in the side plates of the rotameter, and bolts matching the side through grooves are threadedly connected in the connection holes.

3. The combined float flowmeter according to claim 2, characterized in that: Guide protrusions are arranged on the side plates of the rotameter, and guide grooves matching the guide protrusions are formed in the connection plates.

4. The combined float flowmeter according to claim 1, characterized in that: The lower connecting pipe is inserted into the feeding fork tube, the upper connecting pipe is inserted into the discharging fork tube, insertion limiting platforms are arranged in both the feeding fork tube and the discharging fork tube, and sealing rings are arranged at the ends of the lower connecting pipe and the upper connecting pipe.

5. The combined float flowmeter according to claim 4, wherein: The pressing assembly includes screws arranged on both sides of the connection of the feeding fork tube or the discharging fork tube, a pressing plate is slidably sleeved on the two screws, and nuts for pressing the pressing plate are threadedly connected to the screws.

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