Stirring equipment liquid flow rate detection mechanism, method and stirring equipment

Abstract

The present disclosure relates to the technical field of stirring equipment, and in particular to a stirring equipment liquid flow rate detection mechanism, method and stirring equipment, wherein the stirring equipment liquid flow rate detection mechanism comprises a support portion, a pitot tube and a speed meter, wherein at least a portion of the support portion is used to be arranged in a stirring chamber; the pitot tube is arranged on the support portion and is movably arranged relative to the support portion, and the pitot tube is located in the stirring chamber; the speed meter is used to be arranged outside the stirring chamber, and the speed meter is connected to the pitot tube. The pitot tube is movably arranged relative to the support portion, which can ensure that the pitot tube obtains the flow rate of the liquid at different positions in the stirring chamber, and finally obtains the corresponding value through the speed meter, and the whole structure is relatively simple, and can realize the detection of the liquid flow rate of the stirring equipment.

Description

Technical Field

[0001] The present disclosure relates to the technical field of stirring equipment, and in particular to a stirring equipment liquid flow rate detection mechanism, method and stirring equipment. Background Art

[0002] At present, there are a large number of mixing equipment in the industry, with various structural forms. The agitator is mostly located in the middle of the mixing equipment, and the fluid will rotate and flow inside the equipment, not in a straight line. After research and analysis, it was found that although commonly used liquid flow meters (such as electromagnetic flow meters, ultrasonic flow meters, etc.) can detect real-time flow and flow rate, the flow meter size is fixed, usually flange installation is used on the pipeline, the measured fluid remains in a straight line, and a sufficiently long straight pipe section is required on both sides of the meter. These installation conditions are not available in mixing equipment, so it is impossible to use commonly used liquid flow meters to detect flow rate. Summary of the invention

[0003] A main purpose of the present disclosure is to overcome at least one defect of the above-mentioned prior art and to provide a liquid flow rate detection mechanism and method for a stirring device and a stirring device.

[0004] According to a first aspect of the present invention, there is provided a liquid flow rate detection mechanism for a stirring device, comprising:

[0005] A support portion, at least a portion of which is arranged in the stirring chamber;

[0006] A Pitot tube, the Pitot tube is arranged on the support portion and is movably arranged relative to the support portion, and the Pitot tube is located in the stirring chamber;

[0007] The tachometer is used to be arranged outside the stirring chamber and is connected to the Pitot tube.

[0008] In one embodiment of the present invention, the stirring device liquid flow rate detection mechanism further comprises:

[0009] A pressure pipe, the pressure pipe is connected to the velocimeter and the pitot tube. There are two pressure pipes, and the two pressure pipes are respectively connected to the total pressure derivation channel and the static pressure derivation channel of the pitot tube;

[0010] The pressure taking tube is arranged on the support part, and at least a part of the pressure taking tube is arranged deformably so that when the pitot tube moves relative to the support part, the pressure taking tube moves relative to the support part.

[0011] In one embodiment of the present invention, at least a portion of the pressure tapping pipe is a hose.

[0012] In one embodiment of the present invention, the support portion extends along the height direction of the stirring chamber, and the Pitot tube comprises:

[0013] A vertical pipe section, which is arranged on the support portion and connected to the pressure-taking pipe, and is movably arranged along the extension direction of the support portion;

[0014] A horizontal pipe section, which is connected to the vertical pipe section and has a preset angle with the vertical pipe section;

[0015] Wherein, a total pressure hole and a static pressure hole are arranged on the transverse pipe section.

[0016] In one embodiment of the present invention, a receiving groove is provided on the support portion, the receiving groove extends along the height direction of the stirring chamber, the pressure taking tube is arranged in the receiving groove, and the Pitot tube is movably arranged along the extension direction of the receiving groove.

[0017] In one embodiment of the present invention, the support portion is a U-shaped bracket, both ends of the U-shaped bracket are openings, and the receiving groove is a rectangular cavity formed by the U-shaped bracket.

[0018] In one embodiment of the present invention, the liquid flow rate detection mechanism of the stirring device further includes a stopper, which is arranged on the supporting portion to cover a portion of the notch of the accommodating groove.

[0019] In one embodiment of the present invention, the stirring device liquid flow rate detection mechanism further comprises:

[0020] The driving assembly is connected to the pitot tube drivingly so as to drive the pitot tube to move relative to the supporting part.

[0021] In one embodiment of the present invention, the drive assembly comprises:

[0022] A motor, wherein the motor is arranged outside the stirring chamber;

[0023] A pulley, a motor is drivingly connected to the pulley;

[0024] The pulling body is mounted on the pulley and connected with the pitot tube, so that when the motor drives the pulley to rotate, the pulley drives the pitot tube to move through the pulling body.

[0025] In one embodiment of the present invention, the motor is a stepper motor, and the liquid flow rate detection mechanism of the stirring device further includes an industrial computer, which is connected to the stepper motor and the tachometer.

[0026] In one embodiment of the present invention, the pulling body is a pull rope, part of which is arranged on the support part, and the driving assembly further comprises:

[0027] A counterweight is connected to the end of the pull rope away from the pitot tube.

[0028] According to a second aspect of the present invention, there is provided a stirring device, comprising the above-mentioned stirring device liquid flow rate detection mechanism and a stirring device body, wherein the stirring device body comprises a stirring chamber and a stirring portion;

[0029] Wherein, the supporting part and the stirring part are arranged at intervals.

[0030] In one embodiment of the present invention, the stirring device is an open stirring device.

[0031] According to a third aspect of the present invention, there is provided a method for detecting liquid flow rate of a stirring device, comprising:

[0032] Determine the flow velocity detection position in the stirring chamber;

[0033] Move the Pitot tube relative to the support portion to a flow velocity detection position;

[0034] Receive the total fluid pressure value and the fluid static pressure value detected by the Pitot tube.

[0035] In one embodiment of the present invention, the step of moving the pitot tube comprises:

[0036] Receive the flow rate detection position and process it to obtain the running time of the stepper motor;

[0037] The stepper motor drives the pulley to rotate, and the pulley drives the Pitot tube to move to the flow velocity detection position through the pulling body.

[0038] The liquid flow rate detection mechanism of the stirring device of the present invention can obtain the liquid flow rate at different positions in the stirring chamber through the support part, the pitot tube and the speed meter. Among them, the support part is arranged in the stirring chamber, which is used to play a certain supporting role for the pitot tube to prevent the pitot tube from shaking in a large range under the impact of the liquid. The pitot tube is movably arranged relative to the support part, which can ensure that the pitot tube obtains the flow rate of the liquid at different positions in the stirring chamber, and finally obtains the corresponding value through the speed meter. The whole structure is relatively simple, and can realize the detection of the liquid flow rate of the stirring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various objects, features and advantages of the present disclosure will become more apparent by considering the following detailed description of preferred embodiments of the present disclosure in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present disclosure and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always refer to the same or similar parts. Among them:

[0040] Figure 1 is a schematic structural diagram of a stirring device according to an exemplary embodiment;

[0041] Figure 2 is a schematic diagram of a control flow of a liquid flow rate detection mechanism of a stirring device according to an exemplary embodiment;

[0042] Figure 3It is a flow chart of a method for detecting liquid flow rate of a stirring device according to an exemplary embodiment.

[0043] The following are the descriptions of the reference numerals:

[0044] 10. Stirring equipment body; 11. Stirring chamber; 12. Stirring part; 20. Support part; 21. Receiving tank; 30. Pitot tube; 31. Vertical pipe section; 32. Horizontal pipe section; 40. Speed ​​meter; 50. Pressure pipe; 60. Driving assembly; 61. Motor; 62. Pulley; 63. Pulling body; 64. Counterweight; 70. Industrial computer; 71. Receiving module; 72. Control module. DETAILED DESCRIPTION

[0045] Typical embodiments that embody the features and advantages of the present disclosure will be described in detail in the following description. It should be understood that the present disclosure can have various changes in different embodiments without departing from the scope of the present disclosure, and the descriptions and drawings therein are essentially for illustrative purposes rather than for limiting the present disclosure.

[0046] In the following description of different exemplary embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part of the present disclosure and in which different exemplary structures, systems and steps that can implement multiple aspects of the present disclosure are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the present disclosure. Moreover, although the terms "above", "between", "within", etc. may be used in this specification to describe different exemplary features and elements of the present disclosure, these terms are used herein only for convenience, such as according to the direction of the examples in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present disclosure.

[0047] One embodiment of the present invention provides a stirring device liquid flow rate detection mechanism, please refer to Figure 1 The liquid flow rate detection mechanism of the stirring equipment includes: a support part 20, at least a part of the support part 20 is used to be arranged in the stirring chamber 11; a Pitot tube 30, the Pitot tube 30 is arranged on the support part 20 and is movably arranged relative to the support part 20, and the Pitot tube 30 is located in the stirring chamber 11; a speed meter 40, the speed meter 40 is used to be arranged outside the stirring chamber 11, and the speed meter 40 is connected to the Pitot tube 30.

[0048] The liquid flow rate detection mechanism of the stirring device of one embodiment of the present invention can obtain the liquid flow rate at different positions in the stirring chamber 11 through the support part 20, the pitot tube 30 and the speed meter 40. Among them, the support part 20 is arranged in the stirring chamber 11, and is used to play a certain supporting role for the pitot tube 30 to prevent the pitot tube 30 from shaking in a large range under the impact of the liquid. The pitot tube 30 is movably arranged relative to the support part 20, which can ensure that the pitot tube 30 obtains the flow rate of the liquid at different positions in the stirring chamber 11, and finally obtains the corresponding value through the speed meter 40. The whole structure is relatively simple, and can realize the detection of the liquid flow rate of the stirring device, which solves the problem that the liquid flow rate of the stirring device cannot be obtained in the prior art.

[0049] In one embodiment, the Pitot tube 30 as a differential pressure detection element has a relatively simple structure and strong adaptability to the installation environment. It can be converted into a flow rate value by Bernoulli's formula. Compared with other flow meters, the Pitot tube 30 as a flow rate measuring instrument for stirring equipment is more stable.

[0050] like Figure 1 As shown, the liquid flow rate detection mechanism of the stirring equipment also includes: a pressure taking tube 50, the pressure taking tube 50 is connected to the speed meter 40 and the Pitot tube 30, there are two pressure taking tubes 50, and the two pressure taking tubes 50 are respectively connected to the total pressure derivation channel and the static pressure derivation channel of the Pitot tube 30; wherein, the pressure taking tube 50 is arranged on the support part 20, and at least a part of the pressure taking tube 50 is deformably arranged so that when the Pitot tube 30 moves relative to the support part 20, the pressure taking tube 50 moves relative to the support part 20.

[0051] In one embodiment, considering that the Pitot tube 30 needs to move in the stirring chamber 11, its position will change, and the setting of the two pressure tubes 50 can transmit the total fluid pressure and the fluid static pressure obtained by the Pitot tube 30 to the anemometer 40, and because at least part of the pressure tube 50 is deformably arranged, the deformation of the pressure tube 50 can be suppressed during the movement of the Pitot tube 30, thereby ensuring the normal movement of the Pitot tube 30.

[0052] In one embodiment, at least a portion of the pressure tapping pipe 50 is a hose.

[0053] like Figure 1 As shown, the support portion 20 extends along the height direction of the stirring chamber 11, and the Pitot tube 30 includes: a vertical pipe section 31, which is arranged on the support portion 20 and connected to the pressure taking pipe 50, and the vertical pipe section 31 is movably arranged along the extension direction of the support portion 20; a transverse pipe section 32, which is connected to the vertical pipe section 31 and has a preset angle with the vertical pipe section 31; wherein the transverse pipe section 32 is provided with a total pressure hole and a static pressure hole.

[0054] In one embodiment, the Pitot tube 30 is composed of a vertical pipe section 31 and a transverse pipe section 32. The vertical pipe section 31 supports the transverse pipe section 32 on the support portion 20, and the total pressure hole on the transverse pipe section 32 faces the fluid direction, and the static pressure hole is perpendicular to the fluid direction to obtain the total pressure of the fluid and the static pressure of the fluid.

[0055] In one embodiment, the transverse pipe section 32 and the vertical pipe section 31 form an L-shaped pitot tube 30. The L-shaped pitot tube 30 is not only convenient for its cooperation with the support part 20, but also can ensure the acquisition of the total pressure of the fluid and the static pressure of the fluid.

[0056] like Figure 1 As shown, a receiving groove 21 is provided on the support portion 20, and the receiving groove 21 extends in the height direction of the stirring chamber 11. The pressure-taking tube 50 is provided in the receiving groove 21, and the pitot tube 30 is movably provided along the extension direction of the receiving groove 21. The pressure-taking tube 50 and the vertical tube section 31 of the pitot tube 30 are both located in the receiving groove 21, and the movement of the pitot tube 30 is also performed in the extension direction of the receiving groove 21. The receiving groove 21 can play a guiding and supporting role, that is, preventing the pitot tube 30 and the pressure-taking tube 50 from shaking due to the impact of the liquid.

[0057] In one embodiment, the support part 20 is a U-shaped bracket, both ends of the U-shaped bracket are open, and the receiving groove 21 is a rectangular cavity formed by the U-shaped bracket. The support part 20 can be selected from channel steel, and its two ends are open to ensure convenient installation and up and down movement of the pitot tube 30.

[0058] In one embodiment, the stirring device liquid flow rate detection mechanism further includes a stopper, which is arranged on the support portion 20 to cover a portion of the notch of the receiving groove 21. The setting of the stopper can prevent the pitot tube 30 and the pressure taking tube 50 from being separated from the receiving groove 21, but it cannot affect the up and down movement of the pitot tube 30, and a simple protection such as a rope can be used.

[0059] like Figure 1 As shown, the stirring device liquid flow rate detection mechanism also includes: a driving assembly 60, which is drivingly connected to the pitot tube 30 to drive the pitot tube 30 to move relative to the support 20. The setting of the driving assembly 60 can ensure that the pitot tube 30 obtains the liquid flow rate at multiple positions according to the detection requirements during use.

[0060] Regarding the specific structure of the driving assembly 60, as shown in FIG. Figure 1 As shown, the driving assembly 60 includes: a motor 61, which is arranged outside the stirring chamber 11; a pulley 62, which is drivingly connected to the motor 61; and a pulling body 63, which is mounted on the pulley 62 and connected to the Pitot tube 30, so that when the motor 61 drives the pulley 62 to rotate, the pulley 62 drives the Pitot tube 30 to move through the pulling body 63.

[0061] In one embodiment, the motor 61 is a stepper motor, and the stirring device liquid flow rate detection mechanism further includes an industrial computer 70, which is connected to the stepper motor and the tachometer 40. After determining the detection position, the industrial computer 70 will calculate the running time of the stepper motor, and then start the stepper motor to move the pitot tube 30 into position, and transmit the obtained total fluid pressure and fluid static pressure to the tachometer 40, and finally transmit them to the industrial computer 70 for conversion to obtain the flow rate of the current detection point.

[0062] In one embodiment, the pulling body 63 is a pull rope, and part of the pull rope is arranged on the support part 20. The driving assembly 60 further includes: a counterweight block 64, and the counterweight block 64 is connected to the end of the pull rope away from the pitot tube 30. The arrangement of the counterweight block 64 can ensure that after the pitot tube 30 moves to a certain position, the weights on both sides of the pulley 62 can be balanced, thereby ensuring that the pitot tube 30 maintains a constant position.

[0063] An embodiment of the present invention further provides a stirring device, please refer to Figure 1 The stirring device includes the above-mentioned stirring device liquid flow rate detection mechanism and a stirring device body 10, and the stirring device body 10 includes a stirring chamber 11 and a stirring part 12; wherein the support part 20 and the stirring part 12 are spaced apart.

[0064] In one embodiment, the support portion 20 can be directly mounted on the wall of the stirring chamber 11 , and can also be mounted in the middle of the stirring chamber 11 via a cantilever, but it needs to be spaced apart from the stirring portion 12 .

[0065] In one embodiment, the stirring device is an open stirring device.

[0066] In one embodiment, the stirring device liquid flow rate detection mechanism is used to automatically detect multi-point flow rates, and the stirring device includes a stirring device body 10, an L-shaped pitot tube 30, a pressure hose (pressure tube 50), a speed meter 40, an industrial computer 70, a U-shaped stable bracket (support part 20), a pulley with a wire (pulley 62 and a pulling body 63) and a stepping motor (motor 61). The industrial computer 70 includes a receiving module 71 and a control module 72.

[0067] Among them, the industrial computer controls the start and stop, there is no sealing plate at the top of the stirring chamber 11, and the operating state of the internal agitator and the flow state of the fluid can be manually observed. The U-shaped stable bracket is located in the stirring chamber 11. In order to ensure the accuracy of the detection, it is advisable to choose to install it on the side wall of the stirring chamber 11. The concave surface of the U groove of the U-shaped stable bracket faces the direction of the fluid. The total length is consistent with the maximum spacing requirement of the flow rate measurement point. The internal size of the groove ensures that the L-shaped pitot tube 30, the root pressure hose and the pulley rope (pulling body 63) are included. The horizontal tube (horizontal pipe section 32) of the L-shaped pitot tube is located at the bottom, and the vertical tube (vertical pipe section 31) is located in the U-shaped stable bracket. The total pressure hole faces the direction of the fluid, and the static pressure hole is perpendicular to the direction of the fluid. The pulley with a line is installed at the upper end of the stirring chamber 11. One end of the rope is in the U-shaped stable bracket, which is used to connect the L-shaped pitot tube 30, and the other end is outside the stirring chamber 11, which is used to connect an equal weight object (counterweight block 64). After the stepper motor receives the signal from the industrial computer 70, it controls the pulley with wire to rotate and drags the L-shaped pitot tube 30 to the designated detection point. From the perspective of detection and control, the industrial computer 70 is the core component of data processing. The receiving module 71 and the control module 72 are software processing modules located in the industrial computer 70, which are used for data acquisition and conversion and equipment control respectively. Considering the need to meet the requirements of multi-point detection, the total pressure and static pressure will be collected through two pressure hoses respectively. The signals are sent to the speed meter 40 to calculate the current differential pressure value, and finally sent to the industrial computer 70 for conversion to obtain the flow rate at the current detection point. For the specific control process, please refer to Figure 2 .

[0068] An embodiment of the present invention also provides a method for detecting liquid flow rate of a stirring device, comprising: determining a flow rate detection position in a stirring chamber 11; moving a Pitot tube 30 to the flow rate detection position relative to a support portion 20; and receiving a total fluid pressure value and a fluid static pressure value detected by the Pitot tube 30.

[0069] In one embodiment, the step of moving the Pitot tube 30 includes: receiving a flow rate detection position, and processing to obtain the running time of the stepper motor; wherein the stepper motor drives the pulley 62 to rotate, and the pulley 62 drives the Pitot tube 30 to move to the flow rate detection position through the pulling body 63.

[0070] In one embodiment, the method for detecting liquid flow rate of a stirring device is applied to the stirring device described above.

[0071] Combination Figure 2 and Figure 3 As shown, a specific embodiment of the method for detecting the liquid flow rate of a stirring device is as follows:

[0072] Step 101, the operator specifies the flow rate detection position on the industrial computer 70, and the industrial computer 70 automatically converts the value into the start-up allowable time of the stepper motor. The conversion formula is as follows:

[0073] T = L / VM;

[0074] Wherein, T is the running time required for the stepper motor to transfer the L-type pitot tube from the current detection position to the specified detection position. L is the distance between the current detection position of the L-type pitot tube and the specified detection position, and this data is given by the operator. VM is the speed of the stepper motor, and this data is obtained according to the actual equipment model of the stepper motor.

[0075] In step 102, the operator selects the "start" button on the industrial computer 70, and the industrial computer 70 will give the stirring device body 10 and the stepping motor an operation permission command.

[0076] Step 103 : the industrial computer 70 starts the mixing device body 10 through the control module 72 .

[0077] Step 104, the industrial computer 70 starts the stepper motor through the control module 72, and allows the running time to be T. The wire pulley will transfer the L-shaped pitot tube 30 from the current detection position to the specified detection position during this time.

[0078] Step 105, the industrial computer 70 converts the differential pressure value transmitted by the speed meter 40 into a flow rate through the receiving module 71. The conversion formula refers to the Bernoulli formula, which is as follows:

[0079] V=K*(2x(P0-P∞) / ρ)1 / 2;

[0080] Wherein, V is the current flow velocity at the detection point. K is the Pitot tube coefficient, and this data is obtained according to the actual equipment model of the Pitot tube. P0 is the total pressure of the fluid, P∞ is the static pressure of the fluid, and P0-P∞ is the differential pressure value, which is given by the tachometer 40. ρ is the fluid density, and this data is obtained according to the actual medium conditions inside the stirring equipment body 10.

[0081] Step 106 , the industrial computer 70 determines whether the designated flow rate detection position needs to be modified. If so, step 104 is performed; if not, step 107 is performed.

[0082] Step 107, the industrial computer 70 determines whether the detection mechanism needs to be stopped. If it needs to be stopped, step 109 is performed. If not, step 103 is performed. This step is related to the interlock signal outside the flow rate detection mechanism.

[0083] Step 108 , the operator selects the “Stop” button on the industrial computer 70 .

[0084] Step 109, the industrial computer 70 stops the mixing device body 10 through the control module 72. At this time, the industrial computer 70 will give the mixing device body 10 and the stepping motor a command not to allow operation.

[0085] The detection point of the liquid flow rate detection mechanism of the stirring device of the present invention is located near the side wall of the stirring chamber 11. At the same time, in order to meet the needs of multi-point data collection, a stepper motor and a pulley with a wire are added, so that the pitot tube can be moved up and down for multi-point detection. The pitot tube is used for the first time to realize the flow rate detection of the rotating fluid, and the detection point is variable, which increases the data transmission volume and is conducive to the analysis and optimization of the structure of the open stirring device.

[0086] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and example embodiments are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0087] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A liquid flow rate detection mechanism for a stirring device, characterized in that: include: A support portion (20), at least a portion of the support portion (20) being arranged in the stirring chamber (11); A Pitot tube (30), the Pitot tube (30) being arranged on the support portion (20) and being movably arranged relative to the support portion (20), the Pitot tube (30) being located in the stirring chamber (11); A velocimeter (40), the velocimeter (40) being arranged outside the stirring chamber (11), the velocimeter (40) being connected to the Pitot tube (30); A pressure-taking pipe (50), the pressure-taking pipe (50) connecting the velocimeter (40) and the pitot tube (30), two pressure-taking pipes (50), the two pressure-taking pipes (50) being respectively connected to a total pressure derivation channel and a static pressure derivation channel of the pitot tube (30); The pressure-taking tube (50) is arranged on the support portion (20), and at least a portion of the pressure-taking tube (50) is arranged to be deformable, so that when the Pitot tube (30) moves relative to the support portion (20), the pressure-taking tube (50) moves relative to the support portion (20); The support portion (20) extends along the height direction of the stirring chamber (11), and the Pitot tube (30) comprises: A vertical pipe section (31), the vertical pipe section (31) being arranged on the support portion (20) and connected to the pressure taking pipe (50), the vertical pipe section (31) being movably arranged along an extension direction of the support portion (20); a transverse pipe section (32), the transverse pipe section (32) being connected to the vertical pipe section (31) and having a preset angle with the vertical pipe section (31); Wherein, the transverse pipe section (32) is provided with a total pressure hole and a static pressure hole; Wherein, at least a portion of the pressure taking pipe (50) is a hose.

2. The stirring device liquid flow rate detection mechanism according to claim 1, characterized in that: The support portion (20) is provided with a receiving groove (21), the receiving groove (21) extending along the height direction of the stirring chamber (11), the pressure taking tube (50) being arranged in the receiving groove (21), and the Pitot tube (30) being movably arranged along the extension direction of the receiving groove (21).

3. The stirring device liquid flow rate detection mechanism according to claim 2, characterized in that: The support portion (20) is a U-shaped bracket, both ends of the U-shaped bracket are openings, and the receiving groove (21) is a rectangular cavity formed by the U-shaped bracket.

4. The stirring device liquid flow rate detection mechanism according to claim 2, characterized in that: The stirring device liquid flow rate detection mechanism further comprises a stopper, wherein the stopper is arranged on the support portion (20) to cover a portion of the notch of the containing groove (21).

5. The liquid flow rate detection mechanism for a stirring device according to any one of claims 1 to 4, characterized in that: The stirring device liquid flow rate detection mechanism also includes: A driving assembly (60), the driving assembly (60) being drivingly connected to the Pitot tube (30) so as to drive the Pitot tube (30) to move relative to the support portion (20).

6. The stirring device liquid flow rate detection mechanism according to claim 5, characterized in that: The driving assembly (60) comprises: a motor (61), wherein the motor (61) is arranged outside the stirring chamber (11); A pulley (62), wherein the motor (61) is drivingly connected to the pulley (62); A pulling body (63), the pulling body (63) being mounted on the pulley (62) and connected to the Pitot tube (30), so that when the motor (61) drives the pulley (62) to rotate, the pulley (62) drives the Pitot tube (30) to move via the pulling body (63).

7. The stirring device liquid flow rate detection mechanism according to claim 6, characterized in that: The motor (61) is a stepping motor, and the stirring device liquid flow rate detection mechanism further comprises an industrial computer (70), wherein the industrial computer (70) is connected to both the stepping motor and the speed meter (40).

8. The stirring device liquid flow rate detection mechanism according to claim 6, characterized in that: The pulling body (63) is a pull rope, a portion of which is arranged on the support portion (20), and the driving assembly (60) further comprises: A counterweight block (64), the counterweight block (64) being connected to an end of the pull rope away from the Pitot tube (30).

9. A stirring device, characterized in that: The stirring device comprises a liquid flow rate detection mechanism of any one of claims 1 to 8 and a stirring device body (10), wherein the stirring device body (10) comprises a stirring chamber (11) and a stirring portion (12); Wherein, the support portion (20) and the stirring portion (12) are arranged at a distance.

10. The stirring device according to claim 9, characterized in that: The stirring device is an open stirring device.

11. A method for detecting liquid flow rate of a stirring device, applied to the stirring device as claimed in claim 10, characterized in that: include: Determining a flow velocity detection position in the stirring chamber (11); Moving the Pitot tube (30) relative to the support portion (20) to the flow velocity detection position; The total pressure value of the fluid and the static pressure value of the fluid detected by the Pitot tube (30) are received.

12. The method for detecting liquid flow rate of a stirring device according to claim 11, characterized in that: The step of moving the Pitot tube (30) comprises: Receiving the flow velocity detection position, and processing to obtain the running time of the stepping motor; The stepper motor drives the pulley (62) to rotate, and the pulley (62) drives the Pitot tube (30) to move to the flow velocity detection position via a pulling body (63).

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