CN110044432B

CN110044432B - Mass flowmeter

Info

Publication number: CN110044432B
Application number: CN201910345705.XA
Authority: CN
Inventors: 李伟
Original assignee: Jiangsu Huahai M & C Technology Ltd
Current assignee: Jiangsu Huahai M & C Technology Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2021-09-28
Anticipated expiration: 2039-04-26
Also published as: CN110044432A

Abstract

The invention discloses a mass flowmeter, which comprises a protective shell, wherein an accommodating space is arranged in the protective shell; the circulation assembly is embedded in the accommodating space; the measuring assembly comprises a detecting piece and a processing piece, the detecting piece is connected with the processing piece, the detecting piece is arranged on the conveying pipe of the circulation assembly, and the processing piece is embedded and mounted on the protective shell; the circulating assembly further comprises a liquid inlet end, a liquid outlet end and a connecting piece, the liquid inlet end and the liquid outlet end are respectively arranged at two ends of the conveying pipe, and the connecting piece is arranged at the liquid inlet end and the liquid outlet end; the protective shell, the circulation assembly and the measurement assembly are convenient for operators to mount, replace and dismount, and are simple, convenient and quick to operate, time-saving, labor-saving and convenient to popularize and use.

Description

Mass flowmeter

Technical Field

The invention relates to the technical field of fluid detection, in particular to a mass flowmeter.

Background

The Coriolis mass flowmeter is a flowmeter which directly measures the mass of fluid by using the principle of Coriolis force, because the Coriolis mass flowmeter belongs to the characteristics of direct measurement method and the unique principle of Coriolis, so that the Coriolis mass flowmeter can be applied to the mass flow measurement of various media, and the advantages of high accuracy, high stability, high reliability, high range ratio and the like are welcomed by various industries, and according to the principle of Coriolis force, the basic principle of the Coriolis mass flowmeter is to measure the phase time difference generated by two detection coils at the inlet and the outlet of a pipeline, hereinafter referred to as phase difference, the accuracy of the phase difference directly affects the precision of the mass flow, so the process of signal detection and amplification is particularly important, the coriolis mass flowmeter is a direct mass flow meter which is made by using coriolis force which is in direct proportion to the mass flow when fluid flows in a vibrating tube, however, the existing flowmeter is inconvenient to assemble and disassemble, consumes time and labor, and is inconvenient to popularize and use in the using process.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

In view of the problems of the existing mass flowmeter, the invention provides the mass flowmeter, and aims to solve the problems that the existing flowmeter is inconvenient to assemble and disassemble, consumes time and labor.

Therefore, the invention aims to provide the mass flowmeter, which is provided with the protective shell, the circulation assembly and the measurement assembly, is convenient for operators to install, replace and disassemble, and is simple, convenient, quick, time-saving, labor-saving and convenient to popularize and use.

In order to solve the technical problems, the invention provides the following technical scheme: a mass flowmeter comprises a protective shell, wherein an accommodating space is arranged in the protective shell; the circulation assembly is embedded in the accommodating space; the measuring assembly comprises a detecting piece and a processing piece, the detecting piece is connected with the processing piece, the detecting piece is arranged on the conveying pipe of the circulation assembly, and the processing piece is embedded and mounted on the protective shell; the circulation assembly further comprises a liquid inlet end, a liquid outlet end and a connecting piece, wherein the liquid inlet end and the liquid outlet end are respectively arranged at the two ends of the conveying pipe, and the connecting piece is arranged at the liquid inlet end and the liquid outlet end.

As a preferable aspect of the mass flow meter of the present invention, wherein: the connecting piece comprises a locking body, a first connecting body and a second connecting body, the first connecting body is connected and communicated with the conveying pipe, the locking body is sleeved outside a first through pipe of the first connecting body, and a first flange of the first connecting body is matched with a second flange of the second connecting body; wherein, the second through pipe of the second connector is connected with an external infusion tube.

As a preferable aspect of the mass flow meter of the present invention, wherein: one end of the locking column of the locking body sequentially penetrates through the first through hole of the first flange and the second through hole of the second flange, and the other end of the locking column is connected with the pushing frame of the locking body.

As a preferable aspect of the mass flow meter of the present invention, wherein: the locking body further comprises a first spring, a second spring and a locking block, the locking block is embedded in the groove of the locking column, the second spring is arranged between the locking block and the groove, one end of the first spring is connected with the pushing frame, and the other end of the first spring is connected with the connecting groove of the first flange; the locking block sequentially penetrates through the first through hole and the second through hole to be matched with the second flange.

As a preferable aspect of the mass flow meter of the present invention, wherein: the cross section of the locking block is of a right-angle trapezoidal structure.

As a preferable aspect of the mass flow meter of the present invention, wherein: the connecting piece further comprises an unlocking body, and an unlocking frame of the unlocking body is sleeved on the periphery of the second through pipe;

the unlocking body further comprises a third spring, and two ends of the third spring are connected with the second flange and the unlocking frame respectively.

As a preferable aspect of the mass flow meter of the present invention, wherein: the base of the processing piece is embedded in a mounting hole formed in the protective shell.

As a preferable aspect of the mass flow meter of the present invention, wherein: the fixture block of the base is clamped in the clamping groove of the protective shell;

the clamping grooves are arranged on two sides of the mounting hole.

As a preferable aspect of the mass flow meter of the present invention, wherein: the measuring assembly further comprises a clamping piece, and a limiting rod of the clamping piece penetrates through the sliding rail of the protection shell and is matched with the clamping hole of the base.

As a preferable aspect of the mass flow meter of the present invention, wherein: and the limiting rod of the clamping piece is matched with the buckle of the protection shell.

The invention has the beneficial effects that: the invention has reasonable and compact structure, the protection shell, the circulation component and the measurement component are convenient for operators to install, replace and disassemble, and the operation is simple, convenient and quick, time-saving and labor-saving, and convenient to popularize and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is a schematic overall perspective view of a first embodiment of a mass flow meter according to the present invention.

Fig. 2 is a schematic view of a mass flow meter according to a first embodiment of the present invention, in an enlarged view in whole and in part.

Fig. 3 is a circuit diagram of acquisition processing of a first embodiment of a mass flow meter of the present invention.

Fig. 4 is a schematic view of a construction of a joint according to a second embodiment of the mass flow meter of the present invention.

Fig. 5 is a schematic structural diagram of a locking body according to a second embodiment of the mass flowmeter of the present invention.

Fig. 6 is a schematic view of a third embodiment of a mass flow meter according to the invention, in an enlarged view in whole and in part.

Fig. 7 is a schematic view of a third embodiment of a mass flowmeter according to the present invention, shown in an overall cross-sectional view and partially enlarged.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Example 1

Referring to fig. 1 and 2, there is provided an overall structural schematic diagram of a mass flowmeter, as shown in fig. 1, a mass flowmeter includes a protective casing 100, and an accommodating space N is provided in the protective casing 100; the circulation assembly 200 is embedded in the accommodating space N; the measuring assembly 300 comprises a detecting piece 301 and a processing piece 302, wherein the detecting piece 301 is connected with the processing piece 302, the detecting piece 301 is arranged on the conveying pipe 201 of the circulation assembly 200, and the processing piece 302 is embedded and mounted on the protective shell 100; the circulation assembly 200 further comprises a liquid inlet end 202, a liquid outlet end 203 and a connecting piece 204, wherein the liquid inlet end 202 and the liquid outlet end 203 are respectively arranged at two ends of the conveying pipe 201, the connecting piece 204 is arranged on the liquid inlet end 202 and the liquid outlet end 203, and the connecting piece 204 is used for connecting the conveying pipe 201 and an external conveying pipe.

Specifically, the main structure of the invention comprises a protective shell 100, a circulation component 200 and a measurement component 300 which are matched with each other, so that the installation, replacement and disassembly of operators can be facilitated, the operation is simple, convenient and quick, and time and labor are saved, wherein the protective shell 100 plays a role in bearing and protection, an accommodating space N is arranged in the protective shell 100, and preferably, the protective shell 100 is made of stainless steel or aluminum alloy materials; the circulation assembly 200 plays a role in conveying fluid and providing conditions for measuring the flow of the fluid, and is embedded in the accommodating space N, and it should be noted that the circulation assembly 200 is of a U-shaped structure and is made of stainless steel or aluminum alloy material; the measuring assembly 300 is used for measuring flow, and is matched with the circulating assembly 200, and specifically comprises a detecting element 301 and a processing element 302, wherein the detecting element 301 is connected with the processing element 302, the detecting element 301 is arranged on the conveying pipe 201 of the circulating assembly 200, the processing element 302 is embedded and installed on the protective shell 100, it should be noted that the detecting element 301 comprises a first sensor 301a, a second sensor 301b and a driver 301c, the first sensor 301a and the second sensor 301b are respectively arranged on two corner edges of the U-shaped circulating assembly 200, the driver 301c is arranged on the U-shaped circulating assembly 200 between the first sensor 301a and the second sensor 301b, the processing element 302 comprises a base 302a, a driving circuit 302b, a regulating panel 302c and a protective shell 302d, the driving circuit 302b is arranged inside the protective shell 302d, the regulating panel 302c is arranged on the protective shell 302d, the base 302a is arranged at the bottom end of the protective shell 302d, note that the first sensor 301a and the second sensor 301b are divided into a front detection coil and a rear detection coil.

Further, referring to fig. 3, the driving circuit 302b includes a signal amplifying module 302b-1, an acquisition converting module 302b-2 and a main processor 302b-3, wherein, the driving circuit 302b collects the detecting coils of the inlet and the outlet respectively based on the left and the right sound channels of the audio Stereo ADC, one end of the resistor R1 is connected with the front detecting coil-, the other end is connected with the pin 6 of U1B, one end of the resistor R2 is connected with the front detecting coil +, the other end is connected with the pin 5 of U1B, meanwhile, the resistor R3 and one end of the capacitor C1 are connected, the other ends of the resistor R3 and the capacitor C1 are connected and connected to GND, one ends of the resistor R4 and one end of the capacitor C2 are connected, and is connected to pin 6 of U1B, the other ends of resistor R4 and capacitor C2 are connected and connected to pin 7 of U1B, pin 7 of U1B is used as the output of front coil signal amplification, one end of resistor R6 is connected to rear detection coil-, and the other end is connected to pin 2 of U1A; one end of the resistor R7 is connected with the rear detection coil +, and the other end is connected with the pin 3 of the U1A and is simultaneously connected with one end of the resistor R8 and one end of the capacitor C5; the other ends of the resistor R8 and the capacitor C5 are connected and connected to GND; one ends of the resistor R9 and the capacitor C6 are connected and are connected to the 2 pins of U1A; the other ends of the resistor R9 and the capacitor C6 are connected and connected to pin 1 of U1A; pin 1 of U1A is used as the output of rear coil signal amplification, pin 8 of U1A is connected with VDD; a pin 4 of the U1A is connected with GND, one end of a capacitor C3 is connected with a pin 7 of the U1B, the other end of the capacitor C3 is connected with a resistor R5, and the other end of the resistor R5 is connected with a pin 14 of the U2 and is connected with one end of a capacitor C4; the other end of the capacitor C4 is connected to GND; one end of a capacitor C7 is connected with pin 1 of U1A, the other end of the capacitor C7 is connected with a resistor R10, the other end of the resistor R10 is connected with pin 13 of U2 and is connected with one end of a capacitor C8, the other end of a capacitor C8 is connected with GND, one end of a capacitor C9 is connected with pin 1 of U2, the other end of the capacitor C9 is connected with AGND, pin 2 of U2 is connected with AGND, pin 3 of U2 is connected with +5V, pin 4 of U2 is connected with VDD, pin 5 of U2 is connected with GND, and

ends

6, 7, 8, 9, 10, 11 and 12 of U2 are respectively connected with a rear main processor; one end of the capacitor C10 is connected with +5V, and the other end of the capacitor C10 is connected with AGND; one end of the capacitor C11 is connected with VDD, and the other end is connected with GND; one end of the resistor R0 is connected to AGND, and the other end is connected to GND, wherein the main processor 302b-3 is model number EPM570T100C 5.

The working principle is as follows: during sensing, the driver 301c stimulates the delivery tube 201 to move toward each other at the natural resonant frequency of the delivery tube 201, the voltage generated by each sensing coil generates a sine wave as the delivery tube 201 vibrates, the generated sine waves indicate that the flow tubes are moving toward each other, the sine waves at the inlet end 202 and the outlet end 203 are in phase when fluid is not flowing in the flow tubes indicating synchronous movement of the two, induction is induced in the two delivery tubes 201 when flow passes through the sensor delivery tube 201 causing the flow tubes to twist in opposite directions from each other, the sine waves now move in phase with respect to each other and are asynchronous as the twist occurs in the delivery tube 201, the time delay between the two sine waves is measured in milliseconds and is called Delta-T proportional to the mass flow, i.e., the greater the Delta-T produced by Coriolis force, the greater the mass flow rate, the sine wave phase shift indicates mass flow rate, and the frequency indicates density, when the density of the liquid changes, the vibration frequency of the flow tube also changes, and the stiffness of the feed tube 201 remains substantially constant, so that the mass and density of the medium contained in the fixed volume of the feed tube 201 are the only variables affecting the frequency, and the mass flow and density measurements obtained by the volumetric flow source themselves enable the flow to be calculated since the volume of the medium contained in the flow tube is a known constant.

Further, the circulation assembly 200 further includes a liquid inlet end 202, a liquid outlet end 203 and a connecting piece 204, the liquid inlet end 202 and the liquid outlet end 203 are respectively disposed at two ends of the conveying pipe 201, the connecting piece 204 is disposed on the liquid inlet end 202 and the liquid outlet end 203, the connecting piece 204 is used for connecting the conveying pipe 201 and an external conveying pipe, wherein the conveying pipe 201 is divided into a first pipe 201a and a second pipe 201b, the first pipe 201a and the second pipe 201b are disposed in parallel, the first pipe 201a and the second pipe 201b are both U-shaped, it should be noted that an inlet of the first pipe 201a and an inlet of the second pipe 201b converge to form a port, that is, the liquid inlet end 202, and an outlet of the first pipe 201a and an outlet of the second pipe 201b converge to form a port, that is, the liquid outlet end 203.

Example 2

Referring to fig. 4 and 5, this embodiment differs from the first embodiment in that: the connecting member 204 includes a locking body 204a, a first connecting body 204b, a second connecting body 204c and a unlocking body 204d, so that the flowmeter can be conveniently mounted and dismounted, and the operation is simple, convenient and quick. Specifically, referring to fig. 1, the main structure of the device includes a protective casing 100, a circulation assembly 200 and a measurement assembly 300, which are mutually matched, so that the device can be conveniently installed, replaced and disassembled by an operator, and is simple, convenient, fast, time-saving and labor-saving to operate, wherein the protective casing 100 plays a role in bearing and protecting, an accommodating space N is arranged in the protective casing 100, and preferably, the protective casing 100 is made of stainless steel or aluminum alloy material; the circulation assembly 200 plays a role in conveying fluid and providing conditions for measuring the flow of the fluid, and is embedded in the accommodating space N, and it should be noted that the circulation assembly 200 is of a U-shaped structure and is made of stainless steel or aluminum alloy material; the measuring assembly 300 is used for measuring flow, and is matched with the circulating assembly 200, and specifically comprises a detecting element 301 and a processing element 302, wherein the detecting element 301 is connected with the processing element 302, the detecting element 301 is arranged on the conveying pipe 201 of the circulating assembly 200, the processing element 302 is embedded and installed on the protective shell 100, it should be noted that the detecting element 301 comprises a first sensor 301a, a second sensor 301b and a driver 301c, the first sensor 301a and the second sensor 301b are respectively arranged on two corner edges of the U-shaped circulating assembly 200, the driver 301c is arranged on the U-shaped circulating assembly 200 between the first sensor 301a and the second sensor 301b, the processing element 302 comprises a base 302a, a driving circuit 302b, a regulating panel 302c and a protective shell 302d, the driving circuit 302b is arranged inside the protective shell 302d, the regulating panel 302c is arranged on the protective shell 302d, the base 302a is arranged at the bottom end of the protective shell 302d, note that the first sensor 301a and the second sensor 301b are divided into a front detection coil and a rear detection coil.

ends

Further, the circulation assembly 200 further includes a liquid inlet end 202, a liquid outlet end 203 and a connecting piece 204, the liquid inlet end 202 and the liquid outlet end 203 are respectively disposed at two ends of the conveying pipe 201, the connecting piece 204 is disposed on the liquid inlet end 202 and the liquid outlet end 203, the connecting piece 204 is used for connecting the conveying pipe 201 and an external conveying pipe, wherein the conveying pipe 201 is divided into a first pipe 201a and a second pipe 201b, the first pipe 201a and the second pipe 201b are disposed in parallel, the first pipe 201a and the second pipe 201b are both U-shaped, it should be noted that an inlet of the first pipe 201a and an inlet of the second pipe 201b converge to form a port, that is, the liquid inlet end 202, and an outlet of the first pipe 201a and an outlet of the second pipe 201b converge to form a port, that is, the liquid outlet end 203. The connecting member 204 comprises a locking body 204a, a first connecting body 204b and a second connecting body 204c, the first connecting body 204b is connected and communicated with the conveying pipe 201, the locking body 204a is sleeved outside a first through pipe 204b-1 of the first connecting body 204b, wherein the first through pipe 204b-1 is in screwed and sealed connection with the conveying pipe 201 through bolts and sealing rings, and a first flange 204b-2 of the first connecting body 204b is matched with a second flange 204c-1 of the second connecting body 204 c; wherein, the second tube 204c-2 of the second connector 204c is hermetically connected with the external infusion tube.

Further, one end of the locking column 204a-1 of the locking body 204a sequentially passes through the first through hole 204b-21 of the first flange 204b-2 and the second through hole 204c-11 of the second flange 204c-1, and the other end is connected with the pushing frame 204a-2 of the locking body 204 a; the locking body 204a further comprises a first spring 204a-3, a second spring 204a-4 and a locking block 204a-5, the locking block 204a-5 is embedded in the groove 204a-11 of the locking column 204a-1, the second spring 204a-4 is arranged between the locking block 204a-5 and the groove 204a-11, one end of the first spring 204a-3 is fixedly connected with the pushing frame 204a-2, and the other end is fixedly connected with the connecting groove 204b-22 of the first flange 204 b-2; the locking block 204a-5 sequentially penetrates through the first through hole 204b-21 and the second through hole 204c-11 to be matched with the second flange 204 c-1; the cross-section of the locking piece 204a-5 is a right-angled trapezoid structure.

Further, the connecting piece 204 comprises an unlocking body 204d, and an unlocking frame 204d-1 of the unlocking body 204d is sleeved on the periphery of the second through pipe 204 c-2; the unlocking body 204d further comprises a third spring 204d-2, two ends of the third spring 204d-2 are fixedly connected with the second flange 204c-1 and the unlocking frame 204d-1 respectively, and preferably, the connection position of the second flange 204c-1 and the first flange 204b-2 is arranged on the sealing ring.

The method comprises the following operation steps: in the initial state, under the action of the second spring 204a-4 (at this time, the second spring 204a-4 is in a normal state), the locking piece 204a-5 partially protrudes out of the groove 204a-11, at this time, the first spring 204a-3 and the third spring 204d-2 are in a normal state, the locking column 204a-1 is partially embedded into the connecting groove 204b-22 under the action of the locking piece 204a-5, the locking piece 204a-5 abuts against one side of the first flange 204b-2, and the unlocking frame 204d-1 is far away from the second flange 204 c-1;

during installation, after an operator makes the second through hole 204c-11 of the second flange 204c-1 correspond to the first through hole 204b-21 of the first flange 204b-2 one by one, the pushing frame 204a-2 is pushed, under the action of the pushing force, the locking column 204a-1 sequentially passes through the first through hole 204b-21 and the second through hole 204c-11, in the process, the first spring 204a-3 is compressed, due to the abutting force, the slope edge of the locking block 204a-5 compresses the locking block 204a-5 in the groove 204a-11 under the action of the first through hole 204b-21, at the moment, the second spring 204a-4 is in a compressed state, so that the locking block 204a-5 contracted in the groove 204a-11 sequentially passes through the first through hole 204b-21 and the second through hole 204c-11 along with the movement of the locking column 204a-1, when the locking piece 204a-5 passes through the second through hole 204c-11, the locking piece 204a-5 is pushed out due to the resilience of the second spring 204a-4 and the first spring 204a-3, and at the same time, the locking piece 204a-5 abuts against one side of the second flange 204c-1, preferably, a sealing ring is arranged at the joint of the second flange 204c-1 and the first flange 204b-2, and the installation of the flowmeter is completed.

Disassembling: an operator can push the unlocking frame 204d-1 with one hand to move the unlocking frame 204d-1 towards the second flange 204c-1, in the process, the locking column 204a-1 will be inserted into the unlocking hole 204d-11 of the unlocking frame 204d-1, the locking block 204a-5 will be compressed in the groove 204a-11 due to the contact force, when the unlocking frame 204d-1 contacts the second flange 204c-1, the locking block 204a-5 cannot pass through the unlocking hole 204d-11, due to the restoring force (resilience) of the first spring 204a-3, the pushing frame 204a-2 will be rebounded to the initial position, and at the same time, the locking column 204a-1 and the locking block 204a-5 will be restored to the original position, i.e. the disassembling of the flowmeter is completed

It should be noted that, this installation and dismantlement process easy operation, convenience, swift, labour saving and time saving satisfies the user demand.

Example 3

Referring to fig. 4 and 5, this embodiment differs from the above embodiment in that: the measuring assembly 300 comprises a handling member 302 and a gripping member 303. Specifically, referring to fig. 1, the main structure of the device includes a protective casing 100, a circulation assembly 200 and a measurement assembly 300, which are mutually matched, so that the device can be conveniently installed, replaced and disassembled by an operator, and is simple, convenient, fast, time-saving and labor-saving to operate, wherein the protective casing 100 plays a role in bearing and protecting, an accommodating space N is arranged in the protective casing 100, and preferably, the protective casing 100 is made of stainless steel or aluminum alloy material; the circulation assembly 200 plays a role in conveying fluid and providing conditions for measuring the flow of the fluid, and is embedded in the accommodating space N, and it should be noted that the circulation assembly 200 is of a U-shaped structure and is made of stainless steel or aluminum alloy material; the measuring assembly 300 is used for measuring flow, and is matched with the circulating assembly 200, and specifically comprises a detecting element 301 and a processing element 302, wherein the detecting element 301 is connected with the processing element 302, the detecting element 301 is arranged on the conveying pipe 201 of the circulating assembly 200, the processing element 302 is embedded and installed on the protective shell 100, it should be noted that the detecting element 301 comprises a first sensor 301a, a second sensor 301b and a driver 301c, the first sensor 301a and the second sensor 301b are respectively arranged on two corner edges of the U-shaped circulating assembly 200, the driver 301c is arranged on the U-shaped circulating assembly 200 between the first sensor 301a and the second sensor 301b, the processing element 302 comprises a base 302a, a driving circuit 302b, a regulating panel 302c and a protective shell 302d, the driving circuit 302b is arranged inside the protective shell 302d, the regulating panel 302c is arranged on the protective shell 302d, the base 302a is arranged at the bottom end of the protective shell 302d, note that the first sensor 301a and the second sensor 301b are divided into a front detection coil and a rear detection coil.

ends

Further, the circulation assembly 200 further includes a liquid inlet end 202, a liquid outlet end 203 and a connecting piece 204, the liquid inlet end 202 and the liquid outlet end 203 are respectively disposed at two ends of the conveying pipe 201, the connecting piece 204 is disposed on the liquid inlet end 202 and the liquid outlet end 203, the connecting piece 204 is used for connecting the conveying pipe 201 and an external conveying pipe, wherein the conveying pipe 201 is divided into a first pipe 201a and a second pipe 201b, the first pipe 201a and the second pipe 201b are disposed in parallel, the first pipe 201a and the second pipe 201b are both U-shaped, it should be noted that an inlet of the first pipe 201a and an inlet of the second pipe 201b converge to form a port, that is, the liquid inlet end 202, and an outlet of the first pipe 201a and an outlet of the second pipe 201b converge to form a port, that is, the liquid outlet end 203. The connecting member 204 comprises a locking body 204a, a first connecting body 204b and a second connecting body 204c, the first connecting body 204b is connected and communicated with the conveying pipe 201, the locking body 204a is sleeved outside a first through pipe 204b-1 of the first connecting body 204b, wherein the first through pipe 204b-1 is in screwed and sealed connection with the conveying pipe 201 through bolts and sealing rings, and a first flange 204b-2 of the first connecting body 204b is matched with a second flange 204c-1 of the second connecting body 204 c; wherein, the second tube 204c-2 of the second connector 204c is connected with the external infusion tube.

The base 302a of the processing element 302 is embedded in the mounting hole 101 formed in the protective housing 100, the fixture block 302a-1 of the base 302a is clamped in the fixture groove 102 of the protective housing 100, the fixture block 302a-1 plays a role in limiting and provides conditions for quick mounting of the processing element 302; the card slots 102 are disposed on two sides of the mounting hole 101.

Further, the measuring assembly 300 further includes a clamping member 303, a limiting rod 303a of the clamping member 303 penetrates through the sliding rail 103 of the protective housing 100 to be matched with a clamping hole 302a-2 of the base 302a, wherein the sliding rail 103 is arranged on the protective housing 100, the sliding rail 103 plays a role in limiting the limiting rod 303a and guiding, it should be noted that a fourth spring 105 is arranged between the limiting rod 303a and the sliding rail 103, when the measuring assembly is installed, the limiting rod 303a of the clamping member 303 is matched with a buckle 104 of the protective housing 100, specifically, the clamping member 303 further includes a folding rod 303b, the folding rod 303b is connected with one end of the limiting rod 303a through a rotating shaft, it should be noted that the buckle 104 is a stopper or a baffle with a groove, the limiting rod 303a is in an L-shaped structure, and is made of a plastic or aluminum alloy material.

The installation process comprises the following steps: in the initial state, the folding rod 303b is clamped on the buckle 104 due to rotation, and the fourth spring 105 is in a compressed state; during installation, the clamping block 302a-1 of the base 302a is clamped in the clamping groove 102 of the protective shell 100, the folding rod 303b is rotated to be separated from the clamping buckle 104, and the limiting rod 303a accurately penetrates through the clamping hole 302a-2 due to the rebound force of the fourth spring 105 and the limiting of the sliding rail 103, so that the installation of the processing piece 302 is realized.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. A mass flow meter, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the protective shell (100) is internally provided with an accommodating space (N);

the circulation assembly (200) is embedded in the accommodating space (N); and the number of the first and second groups,

the measuring assembly (300) comprises a detecting piece (301) and a processing piece (302), wherein the detecting piece (301) is connected with the processing piece (302), the detecting piece (301) is arranged on the conveying pipe (201) of the circulating assembly (200), and the processing piece (302) is embedded and mounted on the protective shell (100);

the circulation assembly (200) further comprises a liquid inlet end (202), a liquid outlet end (203) and a connecting piece (204), wherein the liquid inlet end (202) and the liquid outlet end (203) are respectively arranged at two ends of the conveying pipe (201), the connecting piece (204) is arranged on the liquid inlet end (202) and the liquid outlet end (203), and the connecting piece (204) is used for connecting the conveying pipe (201) and an external conveying pipe;

the connecting piece (204) comprises a locking body (204a), a first connecting body (204b) and a second connecting body (204c), the first connecting body (204b) is connected and communicated with the conveying pipe (201), the locking body (204a) is sleeved outside a first through pipe (204b-1) of the first connecting body (204b), and a first flange (204b-2) of the first connecting body (204b) is matched with a second flange (204c-1) of the second connecting body (204 c);

wherein, a second tube (204c-2) of the second connecting body (204c) is connected with an external infusion tube;

one end of a locking column (204a-1) of the locking body (204a) sequentially passes through a first through hole (204b-21) of the first flange (204b-2) and a second through hole (204c-11) of the second flange (204c-1), and the other end of the locking column is connected with a pushing frame (204a-2) of the locking body (204 a);

the locking body (204a) further comprises a first spring (204a-3), a second spring (204a-4) and a locking block (204a-5), the locking block (204a-5) is embedded in a groove (204a-11) of the locking column (204a-1), the second spring (204a-4) is arranged between the locking block (204a-5) and the groove (204a-11), one end of the first spring (204a-3) is connected with the pushing frame (204a-2), and the other end of the first spring is connected with a connecting groove (204b-22) of the first flange (204 b-2);

the locking block (204a-5) penetrates through the first through hole (204b-21) and the second through hole (204c-11) in sequence to be matched with the second flange (204 c-1).

2. The mass flow meter of claim 1, wherein: the cross section of the locking block (204a-5) is of a right-angled trapezoid structure.

3. The mass flow meter according to any one of claims 1 to 2, characterized in that: the joint piece (204) further comprises an unlocking body (204d), and an unlocking frame (204d-1) of the unlocking body (204d) is sleeved on the periphery of the second through pipe (204 c-2);

the unlocking body (204d) further comprises a third spring (204d-2), and two ends of the third spring (204d-2) are respectively connected with the second flange (204c-1) and the unlocking frame (204 d-1).

4. The mass flow meter of claim 3, wherein: the base (302a) of the processing piece (302) is embedded in a mounting hole (101) formed in the protective shell (100).

5. The mass flow meter of claim 4, wherein: a clamping block (302a-1) of the base (302a) is clamped in a clamping groove (102) of the protective shell (100);

the clamping grooves (102) are arranged on two sides of the mounting hole (101).

6. The mass flow meter of claim 5, wherein: the measuring assembly (300) further comprises a clamping piece (303), and a limiting rod (303a) of the clamping piece (303) penetrates through the sliding rail (103) of the protective shell (100) to be matched with the clamping hole (302a-2) of the base (302 a).

7. The mass flow meter of claim 6, wherein: the limiting rod (303a) of the clamping piece (303) is matched with the buckle (104) of the protection shell (100).