Anti-backflow metal rotor flow meter

Abstract

The utility model relates to the technical field of flow meters, in particular to an anti-backflow metal rotor flow meter which comprises a flow meter body, a conical groove is formed in the flow meter body, the inner surface of the conical groove is fixedly connected with a set of limiting frames, the opposite ends of the set of limiting frames are fixedly connected with a guide rod, and the outer surface of the guide rod is in sliding connection with a floater. A spring is fixedly connected to the inner surface of the flowmeter body, a baffle is fixedly connected to the upper end of the spring and slidably connected into the conical groove, the floater moves up and down under the action of the flow speed along with continuous rising of the liquid level in the fluid flowing process, and after the floater reaches balance, flow data are transmitted out for observation. The through groove is matched with the floater, when the fluid stops flowing, the spring drives the baffle to reset downwards, and the floater loses the flow speed effect during resetting and slides downwards into the through groove to achieve sealing and blocking, backflow of the fluid is prevented, and the accuracy of detection data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meters, in particular to an anti-backflow metal rotor flow meter. 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. Metal rotor flowmeters are most commonly used in industry.

[0003] For example, a Chinese patent discloses: a metal tube rotor flowmeter, patent number: CN219416311U. The metal tube rotor flowmeter can conveniently disassemble and assemble the clamp, thereby realizing the inspection and maintenance of the guide rod and the float. At the same time, during the measurement process, the outer side of the guide rod can be automatically cleaned to prevent the float from being stuck and affecting the measurement accuracy.

[0004] However, during the implementation of the above technical solution, it was found that at least the following technical problems exist: the flow meter is prone to backflow after the fluid passes through, which will change the flow direction of the fluid, thereby affecting the rotation speed of the float and the measurement result, resulting in inaccurate measurement of the flow meter. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an anti-backflow metal rotor flowmeter to solve the technical problem that the flowmeter is prone to backflow after the fluid passes through, which will change the flow direction of the fluid, thereby affecting the rotation speed of the float and the measurement result, resulting in inaccurate measurement of the flowmeter.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A backflow prevention metal rotor flowmeter includes a flowmeter body, a group of connecting flanges are sleeved on the outer surface of the flowmeter body, a connecting frame is sleeved on the outer surface of the flowmeter body, a flow meter is fixedly connected to one side of the connecting frame, a transparent panel is sleeved inside the flowmeter, an observation mechanism is rotatably connected inside the flowmeter, the observation mechanism includes a rotating pointer, and the rotating pointer is rotatably connected inside the flowmeter.

[0010] Preferably: a digital display screen is sleeved on one end of the flow meter, and a conical groove is provided inside the flow meter body.

[0011] Preferably, a group of limit frames are fixedly connected to the inner surface of the tapered groove, and a guide rod is fixedly connected to one opposite end of a group of limit frames.

[0012] Preferably, a float is slidably connected to the outer surface of the guide rod, and a spring is fixedly connected to the inner surface of the flow meter body.

[0013] Preferably, a baffle is fixedly connected to the upper end of the spring.

[0014] Preferably, a through groove is provided inside the baffle.

[0015] (III) Beneficial effects

[0016] 1. When the fluid stops flowing, the spring drives the baffle to reset downward, and when resetting, the float loses the effect of flow velocity and slides downward, sliding into the through groove to achieve sealing and blocking, preventing the fluid from flowing back and improving the accuracy of the test data.

[0017] 2. The detection data is transmitted to the flow meter through the float, and the data is observed by observing the rotating pointer and the digital display screen, making the flow data observation and statistics more intuitive and convenient, and facilitating the control and adjustment of the flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0019] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0020] Figure 2 This is a diagram of the connection structure of the rotary pointer of the utility model;

[0021] Figure 3 This is a connection structure diagram of the limit frame of the utility model;

[0022] Figure 4 This is a baffle connection structure diagram of the utility model.

[0023] Legend: 11. Flow meter body; 12. Connecting flange; 13. Connecting frame; 14. Flow meter; 15. Transparent panel; 16. Rotating pointer; 17. Digital display screen; 18. Conical groove; 19. Limit frame; 21. Guide rod; 22. Float; 23. Spring; 24. Baffle; 25. Through groove. DETAILED DESCRIPTION

[0024] The embodiment of the present application provides a backflow-proof metal rotor flowmeter, which effectively solves the problem that the flowmeter is prone to backflow after the fluid passes through, which will change the flow direction of the fluid, thereby affecting the rotation speed of the float and the measurement result, causing inaccurate measurement of the flowmeter. When the fluid stops flowing, the spring drives the baffle plate to reset downward, and when resetting, the float loses the effect of the flow velocity and slides downward, sliding into the through groove to achieve sealing and blockage, thereby preventing the fluid from flowing back and improving the accuracy of the detection data.

[0025] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the flow meter is prone to backflow after the fluid passes through, which will change the flow direction of the fluid, thereby affecting the rotation speed of the float and the measurement result, and causing the flow meter to measure inaccurately. The overall idea is as follows: it includes a flow meter body 11, a group of connecting flanges 12 are sleeved on the outer surface of the flow meter body 11, a connecting frame 13 is sleeved on the outer surface of the flow meter body 11, the connecting frame 13 is located between the group of connecting flanges 12, and a flow meter 14 is fixedly connected to the side of the connecting frame 13 away from the flow meter body 11. A transparent panel 15 is sleeved inside the flow meter 14, and an observation mechanism is rotatably connected inside the flow meter 14. The observation mechanism includes a rotating pointer 16, which is connected to the pipeline through the connecting flanges 12 connected at both ends of the flow meter body 11. After the detection data is transmitted through the float 22, the data is observed by observing the rotating pointer 16 and the digital display screen 17, so that the flow data observation statistics are more intuitive and convenient, which is convenient for controlling and adjusting the flow.

[0026] The rotating pointer 16 is rotatably connected to the inside of the flow meter 14. A digital display screen 17 is sleeved on one end of the flow meter 14 close to the rotating pointer 16. A conical groove 18 is provided inside the flow meter body 11. A group of limit frames 19 are fixedly connected to the inner surface of the conical groove 18. A guide rod 21 is fixedly connected to the opposite end of a group of limit frames 19. A float 22 is slidably connected to the outer surface of the guide rod 21. A spring 23 is fixedly connected to the inner surface of the flow meter body 11. A baffle 24 is fixedly connected to the upper end of the spring 23. The baffle 24 is slidably connected to the inside of the conical groove 18. When fluid flows through, the fluid pushes the baffle 24 upward through the spring 23. After the baffle 24 slides upward, a gap is formed for the fluid to flow. In the process of fluid flow, as the liquid level continues to rise, the float 22 moves up and down under the action of the flow velocity. When the float 22 reaches balance, the flow data is transmitted for observation.

[0027] A through groove 25 is provided inside the baffle 24, and the through groove 25 is adapted to the float 22. When the fluid stops flowing, the spring 23 drives the baffle 24 to reset downward, and the float 22 loses the effect of flow velocity and slides downward, sliding into the through groove 25 to achieve sealing and blockage, thereby preventing the fluid from flowing back and improving the accuracy of the detection data.

[0028] In view of the problems existing in the prior art, the utility model provides a backflow prevention metal rotor flowmeter. When the fluid stops flowing, the spring 23 drives the baffle 24 to reset downward, and the float 22 loses the flow velocity effect and slides downward, sliding into the through groove 25 to achieve sealing and blockage, thereby preventing the fluid from flowing back and improving the accuracy of the detection data.

[0029] Working principle:

[0030] In the first step, the connection flanges 12 connected at both ends of the flow meter body 11 are connected to the pipeline. When fluid flows through, the fluid pushes the baffle 24 upward through the spring 23. The baffle 24 slides upward to form a gap for the fluid to flow. In the process of fluid flow, as the liquid level continues to rise, the float 22 moves up and down under the action of the flow velocity. When the float 22 reaches balance, the flow data is transmitted for observation. The detection data is transmitted to the flow meter 14 through the float 22. When the fluid stops flowing, the spring 23 drives the baffle 24 to reset downward, and the float 22 loses the effect of the flow velocity and slides downward, sliding into the through groove 25 to achieve sealing and blockage, thereby preventing the fluid from flowing back and improving the accuracy of the detection data.

[0031] In the second step, the detection data is transmitted to the flow meter 14 through the float 22, and the data is observed by observing the rotating pointer 16 and the digital display screen 17, so that the flow data observation statistics are more intuitive and convenient, which is convenient for controlling and adjusting the flow.

[0032] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A backflow prevention metal rotor flowmeter, comprising a flowmeter body (11), a group of connecting flanges (12) are sleeved on the outer surface of the flowmeter body (11), and a connecting frame (13) is sleeved on the outer surface of the flowmeter body (11), characterized in that: The connecting frame (13) is located between a set of connecting flanges (12); a flow meter (14) is fixedly connected to the connecting frame (13) at a side away from the flow meter body (11); a transparent panel (15) is sleeved inside the flow meter (14); Wherein, the flow meter (14) is internally rotatably connected with an observation mechanism; The observation mechanism comprises a rotating pointer (16), and the rotating pointer (16) is rotatably connected inside the flow meter (14).

2. The anti-backflow metal rotor flowmeter according to claim 1, characterized in that: A digital display screen (17) is sleeved on one end of the flow meter (14) near the rotating pointer (16); Wherein, a conical groove (18) is provided inside the flow meter body (11).

3. The anti-backflow metal rotor flowmeter according to claim 2, characterized in that: A set of limiting frames (19) are fixedly connected to the inner surface of the tapered groove (18); Wherein, one opposite end of a set of the limiting frames (19) is fixedly connected to a guide rod (21).

4. The anti-backflow metal rotor flowmeter according to claim 3, characterized in that: A float (22) is slidably connected to the outer surface of the guide rod (21); Wherein, a spring (23) is fixedly connected to the inner surface of the flow meter body (11).

5. The anti-backflow metal rotor flowmeter according to claim 4, characterized in that: The upper end of the spring (23) is fixedly connected to a baffle (24); The baffle (24) is slidably connected inside the conical groove (18).

6. The anti-backflow metal rotor flowmeter according to claim 5, characterized in that: A through slot (25) is formed inside the baffle (24); The through groove (25) and the float (22) are adapted to each other.

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