Flowmeter

Abstract

The utility model provides a flow meter which comprises a plurality of rotor sets, a synchronous gear, a plurality of driving gears and a plurality of transmission assemblies, each rotor set comprises a first rotor and a second rotor, the rotor sets are configured to enable the first rotors and the second rotors to rotate around parallel rotating axes, the driving gears are connected with the first rotors respectively, and the transmission assemblies are connected with the synchronous gear. The multiple transmission assemblies are arranged between the synchronous gear and the multiple driving gears respectively, each transmission assembly comprises a first transmission gear, a second transmission gear and a connecting part, the first transmission gear is connected with the second rotor and engaged with the driving gears, and the connecting part is connected with the first transmission gear and the second transmission gear; the second transmission gear is meshed with the synchronous gear, and the connecting part is configured to deform when the first transmission gear and the second transmission gear rotate asynchronously. According to the flow meter, the situation that the tooth surfaces of the gears are excessively stressed can be reduced, and the meshing stability of the gears is improved.

Description

Technical Field

[0001] This application relates to the field of measurement technology, and more particularly to a flow meter. Background Technology

[0002] Flow meters are based on the principle of float position measurement, utilizing the balance between the force exerted on the rotor by the fluid flow and the rotor's own weight and buoyancy to measure flow rate. Taking a three-rotor flow meter as an example, it consists of three rotors. Under the impact of the fluid being measured, the three rotors rotate and transmit the signal to a counter through a gear transmission system, directly indicating the total liquid volume of the flow meter.

[0003] In existing flow meters, each rotor is connected to a drive gear, and multiple drive gears are connected to a synchronization gear through a transmission gear to make the multiple drive gears rotate synchronously.

[0004] However, since the fluid force on each rotor may be different, this results in excessive force on the tooth surface between the transmission gear and the synchronously rotating gear, causing severe wear on the gear. Utility Model Content

[0005] This application provides a flow meter whose connecting part can offset the torsional force through its own deformation, thereby playing a buffering role, reducing the occurrence of excessive force on the tooth surface between gears, and improving the meshing stability between gears.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] This application provides a flow meter including multiple rotor groups, each rotor group including a first rotor and a second rotor, the multiple rotor groups being configured such that the first rotor and the second rotor can rotate about parallel rotation axes respectively; the flow meter also includes: a synchronizing gear; multiple driving gears, the multiple driving gears being respectively connected to the multiple first rotors; multiple sets of transmission components, the multiple sets of transmission components being respectively disposed between the synchronizing gear and the multiple driving gears, and each set of transmission components including a first transmission gear, a second transmission gear and a connecting part, the first transmission gear being connected to the second rotor and meshing with the driving gear, the connecting part connecting the first transmission gear and the second transmission gear, the second transmission gear meshing with the synchronizing gear, and the connecting part being configured to deform when the first transmission gear and the second transmission gear rotate asynchronously.

[0008] As an optional implementation, the connecting part is disposed between the first transmission gear and the second transmission gear; a plurality of first transmission parts are disposed on the side of the connecting part facing the first transmission gear, and the plurality of first transmission parts are used to connect the first transmission gear and the connecting part; a plurality of second transmission parts are disposed on the side of the connecting part facing the second transmission gear, and the plurality of second transmission parts are used to connect the second transmission gear and the connecting part.

[0009] As an optional implementation, the connecting part has a plurality of first mounting holes; the first transmission gear has a plurality of first transmission holes; the first transmission part is configured as a first transmission pin, and the first end of the first transmission pin is fixed to the first mounting hole, and the second end passes through the first transmission hole.

[0010] As an optional implementation, the connecting part has a plurality of second mounting holes; the first transmission gear has a plurality of second transmission holes; the second transmission part is configured as a second transmission pin, and the first end of the second transmission pin is fixed to the second mounting hole, and the second end passes through the second transmission hole.

[0011] As an alternative implementation, the connecting part is made of rubber or plastic material.

[0012] As an optional implementation, each transmission assembly further includes a limiting sleeve disposed on the outer periphery of the connecting portion to limit the deformation of the connecting portion.

[0013] As an optional implementation, a first limiting groove is provided on the side of the first transmission gear facing the connecting part, and the first limiting groove is used to limit the position of the limiting sleeve.

[0014] As an optional implementation, a second limiting groove is provided on the side of the second transmission gear facing the connecting part, and the second limiting groove is used to limit the position of the limiting sleeve.

[0015] As an optional implementation, the first transmission gear, the second transmission gear, and the connecting part are coaxially arranged, and all three have interconnected inner rings; the inner edge of the first transmission gear is sleeved on the shaft of the second rotor; the connecting part and the second transmission gear are stacked sequentially on the first transmission gear; each transmission assembly further includes: a pressure cap, which passes through the inner ring of the connecting part and the inner ring of the second transmission gear; and a fastener, which passes through the connecting part and is fixedly connected to the shaft of the second rotor.

[0016] As an optional implementation, the flow meter further includes: a housing, the interior of which defines a plurality of cavities, which are evenly arranged around the center of the housing; and a plurality of rotor assemblies respectively disposed in the cavities.

[0017] In the flow meter of this application, multiple drive gears are connected to multiple first rotors respectively, and a first transmission gear is connected to a second rotor. The first transmission gear meshes with the drive gear, and the second transmission gear meshes with the synchronizing gear. The connecting part is configured to deform when the first transmission gear and the second transmission gear rotate asynchronously. In this way, the connecting part can offset the torsional force through its own deformation, play a buffering role, reduce the occurrence of excessive force on the tooth surface between the gears, and improve the meshing stability between the gears. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a flow meter in one embodiment of this application;

[0020] Figure 2 for Figure 1 Enlarged view of part A;

[0021] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the flow meter.

[0022] Figure 4 An exploded view of the transmission assembly in a flow meter according to one embodiment of the application;

[0023] Figure 5 Cross-section of the transmission assembly in a flow meter according to one embodiment of the application. Figure 1 ;

[0024] Figure 6 Cross-section of the transmission assembly in a flow meter according to one embodiment of the application. Figure 2 .

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Housing; 110. Cavity; 200. Rotor assembly; 210. First rotor; 220. Second rotor; 222. Shaft; 300. Synchronizing gear; 400. Drive gear; 510. First transmission gear; 514. First transmission hole; 516. First limiting groove; 520. Second transmission gear; 524. Second transmission hole; 526. Second limiting groove; 530. Connecting part; 532. First mounting hole; 534. Second mounting hole; 610. First transmission pin; 620. Second transmission pin; 700. Limiting sleeve; 810. Pressure cap; 820. Fastener. Detailed Implementation

[0027] In existing flow meters, each rotor is connected to a drive gear, and multiple drive gears are connected to a synchronizing gear via a transmission gear to ensure synchronized rotation. However, because the fluid force experienced by each rotor may differ, this results in excessive stress on the tooth surfaces of the transmission gear and the synchronizing gear, leading to severe gear wear and reduced flow meter performance.

[0028] To overcome the deficiencies in the prior art, this application provides a flow meter in which multiple drive gears are respectively connected to multiple first rotors, a first transmission gear is connected to a second rotor, the first transmission gear meshes with the drive gear, and the second transmission gear meshes with the synchronizing gear. The connecting part is configured to deform when the first transmission gear and the second transmission gear rotate asynchronously. In this way, the connecting part can offset the torsional force through its own deformation, play a buffering role, reduce the occurrence of excessive force on the tooth surface between the gears, and improve the meshing stability between the gears.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will be combined with the embodiments of this application. Figures 1 to 6 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] This application provides a flow meter, which generally includes a housing 100 and a plurality of rotor assemblies 200. The housing 100 may define a plurality of cavities 110. The plurality of rotor assemblies 200 are respectively disposed in the plurality of cavities 110, and each rotor assembly 200 includes a first rotor 210 and a second rotor 220. The plurality of rotor assemblies 200 are configured such that the first rotor 210 and the second rotor 220 are respectively rotatable about parallel rotation axes. The housing 100 has a fluid inlet and a fluid outlet. The fluid to be measured enters the cavity 110 through the fluid inlet, driving the first rotor 210 and the second rotor 220 to rotate, and exits from the fluid outlet. The flow rate of the fluid is detected by the first rotor 210 and the second rotor 220.

[0031] In each rotor assembly 200, the first rotor 210 and the second rotor 220 are in mutual transmission contact and at a certain angle to each other. This increases the direct facing area between the first rotor 210 and the second rotor 220 and the fluid inlet, and also allows the power of the fluid to be transmitted to the other rotor, improving detection accuracy and reducing instantaneous pulses.

[0032] In some embodiments, the flow meter may further include a synchronizing gear 300, a plurality of driving gears 400, and a transmission assembly. The plurality of driving gears 400 are respectively connected to a plurality of first rotors 210, and a plurality of transmission assemblies are respectively disposed between the synchronizing gear 300 and the plurality of driving gears 400. Each transmission assembly may further include a first transmission gear 510, a second transmission gear 520, and a connecting portion 530. The first transmission gear 510 is connected to the second rotor 220 and meshes with the driving gear 400. The connecting portion 530 connects the first transmission gear 510 and the second transmission gear 520, and the second transmission gear 520 meshes with the synchronizing gear 300.

[0033] In this embodiment, multiple drive gears 400 are connected to multiple first rotors 210 respectively, and a first transmission gear 510 is connected to a second rotor 220. In each transmission assembly, the first transmission gear 510 meshes with the drive gear 400, and the second transmission gear 520 meshes with the synchronizing gear 300. The connecting part 530 connects the first transmission gear 510 and the second transmission gear 520. In this way, the rotational force of the first rotor 210 or the second rotor 220 is transmitted to the synchronizing gear 300 through the drive gear 400, the first transmission gear 510, the connecting part 530, and the second transmission gear 520. With the constraint of the synchronizing gear 300, the rotation angle of the multiple rotor assemblies 200 can be precisely controlled, so that the frequency of the discharged fluid is staggered and the fluid is discharged in an orderly and staggered manner.

[0034] Furthermore, the connecting part 530 is configured to deform when the first transmission gear 510 and the second transmission gear 520 rotate asynchronously.

[0035] Because the fluid impact forces experienced by the multiple rotor groups 200 are different, the rotational speeds of the rotors themselves will inevitably differ. Consequently, a certain speed difference will also exist between the synchronizing gear 300 and the multiple drive gears 400. Since the first transmission gear 510 meshes with the drive gear 400 and the second transmission gear 520 meshes with the synchronizing gear 300, a certain speed difference will also exist between the first transmission gear 510 and the second transmission gear 520, resulting in a torsional force on the connecting portion 530 that connects the first transmission gear 510 and the second transmission gear 520.

[0036] In this embodiment, the connecting part 530 is configured to deform when the first transmission gear 510 and the second transmission gear 520 rotate asynchronously. In this way, the connecting part 530 can offset the torsional force through its own deformation, play a buffering role, reduce the occurrence of excessive force on the tooth surface between the gears, and improve the meshing stability between the gears.

[0037] In some specific embodiments, the connecting part 530 is made of rubber or plastic material. The connecting part 530 made of rubber or plastic has both a certain mechanical strength and can be deformed under external force, which is suitable for the application scenario of the connecting part 530 in this embodiment.

[0038] In some embodiments, a connecting portion 530 is disposed between a first transmission gear 510 and a second transmission gear 520. A plurality of first transmission portions are provided on the side of the connecting portion 530 facing the first transmission gear 510, and these multiple first transmission portions are used to connect the first transmission gear 510 and the connecting portion 530. A plurality of second transmission portions are provided on the side of the connecting portion 530 facing the second transmission gear 520, and these multiple second transmission portions are used to connect the second transmission gear 520 and the connecting portion 530.

[0039] The first and second transmission parts can take various forms. For example, the first rotating part and the second transmission part can be mortise and tenon structures, snap-fit ​​structures, pin structures, etc.

[0040] Furthermore, the connecting portion 530 has a plurality of first mounting holes 532. The first transmission gear 510 has a plurality of first transmission holes 514. The first transmission part is configured as a first transmission pin 610, and the first end of the first transmission pin 610 is fixed to the first mounting hole 532, and the second end passes through the first transmission hole 514.

[0041] The number of first mounting holes 532 is at least two, and can be three, four or more. Multiple first mounting holes 532 are arranged symmetrically to smoothly and evenly transmit power between the first transmission gear 510 and the connecting portion 530.

[0042] In this embodiment, when installing the first transmission gear 510 and the connecting part 530, the first transmission pin 610 can be inserted into the first mounting hole 532 to fix it on the connecting part 530. Then, the first transmission pin 610 is aligned and inserted into the first transmission hole 514 of the first transmission part, which makes disassembly and assembly simple and convenient.

[0043] Furthermore, the connecting portion 530 has a plurality of second mounting holes 534. The second transmission gear 520 has a plurality of second transmission holes 522. The second transmission portion is configured as a second transmission pin 620, and the first end of the second transmission pin 620 is fixed to the second mounting hole 534, and the second end passes through the second transmission hole 524.

[0044] The number of second mounting holes 534 is at least two, and can be three, four or more. Multiple second mounting holes 534 are symmetrically arranged to smoothly and evenly transmit power between the second transmission gear 520 and the connecting portion 530.

[0045] In this embodiment, when installing the second transmission gear 520 and the connecting part 530, the second transmission pin 620 can be inserted into the second mounting hole 534 to fix it on the connecting part 530. Then, the second transmission pin 620 can be aligned and inserted into the second transmission hole 524 of the second transmission part. This makes disassembly and assembly simple and convenient.

[0046] In this embodiment, the connecting part 530 is connected to the first transmission gear 510 via the first transmission pin 610, and the connecting part 530 is connected to the second transmission gear 520 via the second transmission pin 620. The connecting part 530 is configured to deform when the first transmission gear 510 and the second transmission gear 520 rotate asynchronously. In this way, the connecting part 530 can offset the shear force on the first transmission pin 610 and the second transmission pin 620 through its own deformation, making the transmission more reliable.

[0047] In some embodiments, each transmission assembly may further include a limiting sleeve 700 disposed on the outer periphery of the connecting portion 530 to limit the deformation of the connecting portion 530.

[0048] In this embodiment, the limiting sleeve 700 can be made of a high-strength, non-deformable material. It can be cylindrical and sleeved on the outer periphery of the connecting part 530. This can prevent the connecting part 530 from being excessively deformed, control the deformation of the connecting part 530, and avoid irreversible deformation of the connecting part 530.

[0049] Furthermore, a first limiting groove 516 is provided on the side of the first transmission gear 510 facing the connecting part 530, and the first limiting groove 516 is used to limit the position of the limiting sleeve 700.

[0050] Furthermore, a second limiting groove 526 is provided on the side of the second transmission gear 520 facing the connecting part 530, and the second limiting groove 526 is used to limit the position of the limiting sleeve 700.

[0051] By limiting the first limiting groove 516 and the second limiting groove 526, the position of the limiting sleeve 700 can be effectively limited, making the position between the limiting sleeve 700 and the connecting part 530 more compact and stable, and ensuring that the limiting sleeve 700 can limit the deformation of the connecting part 530.

[0052] Furthermore, the first transmission gear 510, the second transmission gear 520, and the connecting portion 530 are coaxially arranged, and all three have interconnected inner rings. The inner edge of the first transmission gear 510 is fitted onto the rotating shaft 222 of the second rotor 220. The connecting portion 530 and the second transmission gear 520 are sequentially stacked on top of the first transmission gear 510. Each transmission assembly may also include a pressure cap 810 and a fastener 820. The pressure cap 810 passes through the inner ring of the connecting portion 530 and the inner ring of the second transmission gear 520. The fastener 820 passes through the connecting portion 530 and is fixedly connected to the rotating shaft 222 of the second rotor 220. With this design, the first transmission gear 510, the connecting portion 530, and the second transmission gear 520 are connected to the second rotor 220 through the pressure cap 810 and the fastener 820.

[0053] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0054] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0055] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0056] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A flow meter comprising a plurality of rotor groups (200), each rotor group (200) comprising a first rotor (210) and a second rotor (220), the plurality of rotor groups (200) being configured such that the first rotor (210) and the second rotor (220) are respectively rotatable about parallel rotation axes; characterized in that, The flow meter also includes: Synchronous gear (300); Multiple drive gears (400) are connected to multiple first rotors (210) respectively; Multiple sets of transmission components are respectively disposed between the synchronous gear (300) and multiple drive gears (400), and each set of transmission components includes a first transmission gear (510), a second transmission gear (520) and a connecting part (530). The first transmission gear (510) is connected to the second rotor (220) and meshes with the drive gear (400). The connecting part (530) connects the first transmission gear (510) and the second transmission gear (520). The second transmission gear (520) meshes with the synchronous gear (300). The connecting part (530) is configured to deform when the first transmission gear (510) and the second transmission gear (520) rotate asynchronously.

2. The flow meter according to claim 1, characterized in that, The connecting part (530) is disposed between the first transmission gear (510) and the second transmission gear (520); The connecting part (530) has a plurality of first transmission parts on the side facing the first transmission gear (510), and the plurality of first transmission parts are used to connect the first transmission gear (510) and the connecting part (530). The connecting part (530) has a plurality of second transmission parts on the side facing the second transmission gear (520), and the plurality of second transmission parts are used to connect the second transmission gear (520) and the connecting part (530).

3. The flow meter according to claim 2, characterized in that, The connecting part (530) has a plurality of first mounting holes (532); The first transmission gear (510) has a plurality of first transmission holes (514); The first transmission part is configured as a first transmission pin (610), and the first end of the first transmission pin (610) is fixed to the first mounting hole (532), and the second end passes through the first transmission hole (514).

4. The flow meter according to claim 2, characterized in that, The connecting part (530) has a plurality of second mounting holes (534); The first transmission gear (510) has a plurality of second transmission holes (524); The second transmission part is configured as a second transmission pin (620), and the first end of the second transmission pin (620) is fixed to the second mounting hole (534), and the second end passes through the second transmission hole (524).

5. The flow meter according to any one of claims 1 to 4, characterized in that, The connecting part (530) is made of rubber or plastic material.

6. The flow meter according to any one of claims 1 to 4, characterized in that, Each of the aforementioned transmission components also includes: A limiting sleeve (700) is disposed on the outer periphery of the connecting portion (530) to limit the deformation of the connecting portion (530).

7. The flow meter according to claim 6, characterized in that, The first transmission gear (510) has a first limiting groove (516) on the side facing the connecting part (530), and the first limiting groove (516) is used to limit the position of the limiting sleeve (700).

8. The flow meter according to claim 6, characterized in that, The second transmission gear (520) has a second limiting groove (526) on the side facing the connecting part (530), and the second limiting groove (526) is used to limit the position of the limiting sleeve (700).

9. The flow meter according to any one of claims 1 to 4, characterized in that, The first transmission gear (510), the second transmission gear (520) and the connecting part (530) are coaxially arranged, and all three have interconnected inner rings; The inner edge of the first transmission gear (510) is sleeved on the shaft (222) of the second rotor (220); The connecting part (530) and the second transmission gear (520) are stacked sequentially on the first transmission gear (510); Each of the aforementioned transmission components also includes: A pressure cap (810) passes through the inner ring of the connecting part (530) and the inner ring of the second transmission gear (520); Fastener (820) passes through the connecting part (530) and is fixedly connected to the shaft (222) of the second rotor (220).

10. The flow meter according to any one of claims 1 to 4, characterized in that, Also includes: A housing (100) having a plurality of cavities (110) defined inside the housing (100), and the cavities (110) being uniformly arranged around the center of the housing (100); Multiple rotor assemblies (200) are respectively disposed in the cavity (110).

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