Flow calibration device for a shower head

Abstract

The application discloses a flow calibration device for a nozzle, and relates to the technical field of nozzle calibration devices, in particular to a flow calibration device for a nozzle, which comprises a nozzle, a first braking mechanism and a second braking mechanism; the first braking mechanism is used for calibrating the flow of the nozzle, and comprises a flow meter connected with the liquid inlet of the nozzle, an air pump connected with the air inlet of the nozzle, and a first calibration device used for adjusting the opening of the nozzle; the second braking mechanism is used for calibrating the relative position of the gear and the fixed ring, and comprises a second calibration device used for adjusting the relative position of the gear and the fixed ring, and a second mounting device used for mounting the fixed ring on the gear; the first braking mechanism adjusts the adjusting part of the nozzle to realize flow adjustment, and the second braking mechanism adjusts the relative position of the gear and the fixed ring, wherein the positions of the adjusting gear and the adjusting part are correspondingly arranged, so that the accurate butt joint of the Hall magnet, the gear and the adjusting part can be realized.

Description

Technical Field

[0001] This invention relates to the field of atomization technology, and more specifically to a flow calibration device for a nozzle. Background Technology

[0002] Currently, the nozzle uses the rotation of a motor as the power to adjust the opening of the flow regulating mechanism, and the nozzle adjusts the flow by adjusting the opening. This motor drives several speed-changing gears and clutch gears to rotate the terminal output shaft, which in turn drives the flow regulating valve to change the opening of the flow regulating valve.

[0003] The aforementioned flow control valve control system also includes a magnet (equivalent to the Hall magnet of this application) that rotates synchronously with the terminal output shaft, and a magnetic induction component corresponding to the aforementioned magnet, in order to calculate the number of revolutions of the terminal output shaft to obtain different feedback signals, and further determine the opening degree of the flow control valve.

[0004] Therefore, during the assembly of the atomizing component, the flow rate of the nozzle needs to be calibrated to ensure the opening size of the flow regulating valve. Thus, the nozzle needs to be tested. Currently, the test is generally done manually. The nozzle's liquid inlet is connected to the flow meter, and the nozzle's air inlet is connected to the air pump. The adjusting part is manually rotated until the flow rate detected by the flow meter reaches the set flow rate. Then, the gear is installed on the adjusting part. After the gear is installed on the adjusting part, the Hall magnet on the retaining ring is aligned with the nozzle, and then the retaining ring is installed on the gear.

[0005] During the installation process described above, alignment is performed visually. However, since the adjustment unit, gears, and fixing rings are relatively small, relying solely on visual correction can easily lead to inaccurate connection and docking due to incorrect angles or external forces. This can cause errors in the position of the Hall magnet, affecting the acquisition of feedback signals and making it difficult to accurately control the opening of the flow control valve, thus impacting the reliability of the nozzle. Summary of the Invention

[0006] The purpose of this invention is to provide a flow calibration device for nozzles.

[0007] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows: a flow calibration device for a nozzle, comprising a nozzle, a first braking mechanism, and a second braking mechanism; the first braking mechanism is used to calibrate the flow of the nozzle, and includes a flow meter connected to the liquid inlet of the nozzle, an air pump connected to the air inlet of the nozzle, and a first calibration device for adjusting the opening of the nozzle; the second braking mechanism is used to calibrate the relative position of the gear and the fixed ring, and includes a second calibration device for adjusting the relative position of the gear and the fixed ring, and a second mounting device for mounting the fixed ring on the gear.

[0008] Preferably, the first calibration device includes a first drive head, a first base, and a first motor; the first drive head has a first limiting part inside, which is used to engage the adjustment part of the nozzle; the first drive head passes through the first base, and the first base is fixed to the outer periphery of the first drive head; a second limiting part is formed on the first base for engaging the housing of the nozzle.

[0009] The adjusting part has an asymmetrical structure in its radial direction, and the corresponding groove structure in the first limiting part has an asymmetrical liquid level structure. The adjusting part and the first limiting part are engaged with each other to ensure that after the adjusting part is installed in the first limiting part, it can only move up and down in the first limiting part.

[0010] The first limiting part is a groove-shaped structure opened inside the first driving head, and the second limiting part is a protruding structure provided on the top of the first base.

[0011] Preferably, the second calibration device includes a second drive head, a second base, and a second motor; the top end of the second drive head forms a third limiting part, which is used to engage the gear; the second base is sleeved on the outer periphery of the second drive head and rotates synchronously with the second drive head; the output end of the second motor is connected to the second drive head; the second motor drives the second drive head to rotate, and the second drive head drives the gear to rotate, so as to change the relative position of the gear and the fixed ring.

[0012] Preferably, the second mounting device includes a lifting cylinder, the output end of which forms a locking part, a fixing ring is mounted on the locking part, and the lifting cylinder drives the fixing ring to descend and mount the fixing ring onto the gear.

[0013] Preferably, when the fixing ring is mounted on the gear, the first drive head and the second drive head have opposite tilting directions and the same tilt angle.

[0014] Preferably, the first drive head and the second drive head achieve opposite synchronous movement under the drive of the first motor and the second motor.

[0015] Preferably, a Hall magnet is mounted on the fixing ring, and a fourth limiting part is formed on the engaging part, which is used to limit the Hall magnet on the fixing ring.

[0016] The fourth limiting part is a groove-shaped structure whose shape is adapted to the shape of the Hall magnet. When installing the fixing ring, the Hall magnet is aligned with the fourth limiting part before installation.

[0017] Preferably, the adjusting part of the nozzle is inserted into the first limiting part to achieve limiting; the second driving head is inserted into the gear to achieve limiting.

[0018] Preferably, the middle part of the engaging portion is provided with an adaptation hole to cooperate with the second drive head. When the lifting cylinder installs the fixing ring on the gear, the second drive head is inserted into the ring portion of the fixing ring and the adaptation hole.

[0019] Preferably, the width of the top of the second driving head gradually increases from top to bottom.

[0020] The lifting cylinder drives the third limiting part to move downward continuously, and the side wall of the second driving head squeezes the side wall of the adapting hole, forcing the fixing ring to fall off the third limiting part. With the pressure of the lifting cylinder, the fixing ring can be installed on the gear.

[0021] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0022] 1. The present invention provides a flow calibration device for a nozzle, including a first braking mechanism and a second braking mechanism. The first braking mechanism adjusts the flow rate by adjusting the adjusting part of the nozzle, and the second braking mechanism adjusts the relative position of the gear and the fixed ring by adjusting the adjusting part. The adjusting gear and the adjusting part are positioned correspondingly to achieve accurate docking of the Hall magnet with the gear and the adjusting part.

[0023] 2. The present invention provides a flow calibration device for a nozzle. When the air pump is turned on, the airflow is ejected at high speed from the air passage cavity and the nozzle structure, so that a negative pressure environment is formed at the first end of the liquid cavity and inside the liquid cavity. By detecting the flow rate of the medium in the liquid cavity, the flow rate at the nozzle structure can be detected, thus realizing the flow rate detection of the nozzle without the need for flow monitoring at the nozzle structure.

[0024] 3. This invention provides a flow calibration device for a nozzle, in which the Hall magnet can be accurately aligned with the nozzle, gear, and adjustment unit, preventing errors in the position of the Hall magnet and greatly increasing the reliability of the nozzle. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the nozzle structure in an embodiment of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the nozzle structure in an embodiment of the present invention. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the flow calibration device of the present invention. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the assembly of the nozzle, gear, retaining ring, and flow calibration device in this invention. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the assembly of the nozzle, gear, retaining ring, and flow calibration device in this invention. Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the assembly of the gear and the fixed ring in this invention;

[0031] Figure 7 This is a partial structural schematic diagram of the first braking mechanism in this invention;

[0032] Figure 8 This is a partial structural schematic diagram of the second braking mechanism in this invention;

[0033] Figure 9 This is a partial structural diagram of the assembly of the gear and the second braking mechanism in this invention;

[0034] Figure 10 This is a schematic diagram of the gear structure in this invention;

[0035] Figure 11 This is a schematic diagram of the engaging portion in the second mounting device of the present invention;

[0036] Figure 12 This is a schematic diagram of the assembly of the engaging part and the fixing ring in the second mounting device of the present invention.

[0037] The components are: 1. Nozzle; 2. Liquid inlet; 3. Air inlet; 4. Adjustment part; 5. Liquid chamber; 6. First position sensor; 7. First drive head; 8. First base; 9. First motor; 10. First limiting part; 11. Second limiting part; 12. Second drive head; 13. Second base; 14. Second motor; 15. Third limiting part; 16. Gear; 17. Fixing ring; 18. Transmission groove; 19. Lifting cylinder; 20. Engaging part; 21. Fourth limiting part. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner. Therefore, they only show the components related to the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein. Therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0040] Example 1

[0041] This embodiment mainly introduces a flow calibration device for a nozzle, including a nozzle 1, a first braking mechanism and a second braking mechanism.

[0042] Please refer to Figure 1 and Figure 2 The nozzle 1 includes a liquid inlet 2, an air inlet 3, an adjustment part 4, and a liquid chamber 5. One end of the nozzle 1 is provided with a nozzle structure, which, together with the liquid chamber 5, forms an air passage cavity. The liquid chamber 5 is connected to the air passage cavity. The first end of the adjustment part 4 and the first end of the liquid chamber 5 form a flow regulating valve, which is used to adjust the degree of communication between the liquid chamber 5 and the air passage cavity. The second end of the adjustment part 4, in order to facilitate the rotation drive of the adjustment part 4, is provided to pass through the second end of the liquid chamber 5 and a gear 16 in sequence. The gear 16 is used for transmission connection with the drive motor.

[0043] It should be understood that the regulating part 4 adjusts the flow rate by changing the opening between the liquid chamber 5 and the regulating part 4. In this embodiment, the first end of the regulating part 4 gradually tapers towards the nozzle structure. The first end of the regulating part 4 can be rotated to selectably insert into the first end of the liquid chamber 5. By changing the opening between the first end of the regulating part 4 and the first end of the liquid chamber 5, the flow rate is adjusted.

[0044] When the air pump is turned on, the airflow is ejected at high speed from the air passage cavity and the nozzle structure, creating a negative pressure environment at the first end of the liquid cavity 5 and inside the liquid cavity 5. When the air pump is not adjusted, the larger the opening between the first end of the adjustment part 4 and the first end of the liquid cavity 5, the stronger the negative pressure between the first end of the liquid cavity 5 and the liquid cavity 5, that is, the stronger the flow rate of the medium (gas) inside the liquid cavity 5. When the opening between the first end of the adjustment part 4 and the first end of the liquid cavity 5 is 0, the liquid cavity 5 and the air passage cavity are independent of each other, and even if the air pump is adjusted, the pressure inside the liquid cavity 5 is not affected by the air pump.

[0045] Please refer to Figures 2-12 The first braking mechanism is used to calibrate the flow rate of the nozzle 1. It includes a flow meter connected to the liquid inlet 2 of the nozzle 1, an air pump connected to the air inlet 3 of the nozzle 1, and a first calibration device for adjusting the opening of the nozzle 1.

[0046] The first calibration device includes a first position sensor 6, a first drive head 7, a first base 8, and a first motor 9; the first drive head 7 has a first limiting part 10 inside, which is used to engage the adjustment part 4 of the nozzle 1; the first drive head 7 is disposed through the first base 8, and the first base 8 is fixed to the outer periphery of the first drive head 7; a second limiting part 11 is formed on the first base 8 for engaging the housing of the nozzle 1.

[0047] There is no linkage structure between the first drive head 7 and the first base 8; they are set independently. The first drive head 7 rotates inside the first base 8 under the drive of the first motor 9. The first limiting part 10 is a groove-shaped structure opened inside the first drive head 7, and the second limiting part 11 is a protrusion structure provided on the top of the first base 8.

[0048] The second limiting part 11 is engaged with the housing of the nozzle 1. During installation, the adjusting part 4 of the nozzle 1 is inserted into the first limiting part 10 to achieve limiting. Then the nozzle 1 is rotated. While the nozzle 1 is rotating, the first limiting part 10 is rotated. The first limiting part 10 and the nozzle 1 are rotated to the initial angle. The nozzle 1 is pressed down so that the housing of the nozzle 1 is engaged with the second limiting part 11.

[0049] The adjustment part 4 extends out of the second end of the liquid cavity 5 and forms an asymmetrical structure in its radial direction. The groove-shaped structure opened in the corresponding first limiting part 10 is also an asymmetrical structure. The adjustment part 4 and the first limiting part 10 engage with each other to ensure that after the adjustment part 4 is installed in the first limiting part 10, it can only move up and down relative to the first limiting part 10.

[0050] The second calibration device includes a second drive head 12, a second base 13, and a second motor 14; the top end of the second drive head 12 forms a third limiting part 15, which is used to engage the gear 16; the second base 13 is sleeved on the outer periphery of the second drive head 12 and rotates synchronously with the second drive head 12; the output end of the second motor 14 is connected to the second drive head 12; the second motor 14 drives the second drive head 12 to rotate, and the second drive head 12 drives the gear 16 to rotate, so as to change the relative position of the gear 16 and the fixed ring 17.

[0051] The gear 16 has a transmission groove 18 in the middle, and the transmission groove 18 is adapted to the shape of the adjustment part 4 of the nozzle 1; the third limiting part 15 passes through the transmission groove 18 and engages with the gear 16, and the second base 13 is used to support the gear 16.

[0052] The second mounting device includes a lifting cylinder 19, the output end of which forms a locking part 20. A fixing ring 17 is mounted on the locking part 20. The lifting cylinder 19 drives the fixing ring 17 to descend and mount the fixing ring 17 onto the gear 16. A Hall magnet is mounted on the fixing ring 17. A fourth limiting part 21 is formed on the locking part 20, which is used to limit the Hall magnet on the fixing ring 17.

[0053] The fourth limiting part 21 is a groove-shaped structure whose shape is adapted to the shape of the Hall magnet. When installing the fixing ring 17, the Hall magnet is aligned with the fourth limiting part 21 before installation.

[0054] The middle part of the engaging part 20 is provided with an adaptation hole to cooperate with the second driving head 12, and the width of the top end of the second driving head 12 gradually increases from top to bottom; when the lifting cylinder 19 installs the fixing ring 17 on the gear 16, the second driving head 12 is inserted into the ring part of the fixing ring 17 and the adaptation hole.

[0055] The engaging part 20 is positioned corresponding to the second limiting part 11. When the fixing ring 17 is installed on the engaging part 20, the Hall magnet on the fixing ring 17 is adapted to the shape of the nozzle 1.

[0056] During installation, the second drive head 12 passes through the gear 16, and the gear 16 is fitted onto the third limiting part 15 to achieve a limiting position. The fixing ring 17 is installed on the engaging part 20. The Hall magnet on the fixing ring 17 corresponds to the position of the nozzle 1 housing. That is, after the second motor 14 drives the second drive head 12 to rotate to the calibration position, the lifting cylinder 19 drives the fixing ring 17 to descend and install the fixing ring 17 onto the gear 16. The fixing ring 17 and the Hall magnet only move up and down and do not rotate with the second drive head 12.

[0057] In actual use, the installation steps are as follows:

[0058] S100. Insert the adjusting part 4 of the nozzle 1 into the first limiting part 10. Adjust the position of the nozzle 1 as needed to adjust the angle of the first limiting part 10 and press down the nozzle 1 so that the housing of the nozzle 1 is locked on the second limiting part 11, thereby realizing the installation between the nozzle 1 and the first base 8. Then connect the air pump to the air inlet 3 of the nozzle 1 through a pipe and the flow meter to the liquid inlet 2 of the nozzle 1 through a pipe.

[0059] When the nozzle 1 is installed between the first base 8 and the first drive head 7, the position of the first drive head 7 is set at the initial angle.

[0060] The first position sensor 6 is used to detect whether the nozzle 1 is installed on the first base 8. If the first position sensor 6 does not detect that the nozzle 1 is correctly installed, the air pump cannot work normally.

[0061] S200: The gear 16 is fitted onto the third limiting part 15 to achieve limiting, and the retaining ring 17 is installed on the engaging part 20;

[0062] A Hall magnet is installed on the fixing ring 17, and a fourth limiting part 21 is formed on the engaging part 20. The fourth limiting part 21 is used to limit the Hall magnet on the fixing ring 17.

[0063] S300, the air pump is turned on, and the flow meter detects the flow rate in the liquid chamber 5; the first motor 9 drives the first drive head 7 to rotate, and calibrates the opening between the first end of the adjustment part 4 and the first end of the liquid chamber 5 until the flow rate in the liquid chamber 5 reaches the set flow rate.

[0064] When the air pump is turned on, the airflow is ejected at high speed from the air passage cavity and the nozzle structure, which creates a negative pressure environment at the first end of the liquid cavity 5 and inside the liquid cavity 5. By detecting the flow rate inside the liquid cavity 5, the flow rate at the nozzle structure can be detected, thereby realizing the flow rate detection of the nozzle 1.

[0065] S400, while the first motor 9 drives the first drive head 7 to rotate, the second motor 14 drives the second drive head 12 to achieve synchronous rotation in the opposite direction to the rotation of the first drive head 7, until the flow rate detected by the flow meter reaches the set value.

[0066] Before the first drive head 7 and the second drive head 12 rotate synchronously, the second motor 14 drives the second drive head 12 to rotate to a set angle. The set angle of the second drive head 12 depends on the initial angle of the first drive head 7. The initial angle of the first drive head 7 and the set angle of the second drive head 12 have opposite tilt directions and the same tilt angle.

[0067] Specifically, the initial flow rate in the liquid chamber 5 is judged. If the flow rate is too small, the first motor 9 drives the first drive head 7 to rotate counterclockwise, and the second motor 14 drives the second drive head 12 to rotate clockwise. If the flow rate is too large, the first motor 9 drives the first drive head 7 to rotate clockwise, and the second motor 14 drives the second drive head 12 to rotate counterclockwise.

[0068] S500, the lifting cylinder 19 then drives the fixed ring 17 to descend and install the fixed ring 17 on the gear 16; then the assembled fixed ring 17, gear 16 and calibrated nozzle 1 are removed and reassembled.

[0069] The second motor 14 drives the second drive head 12 and the gear 16 to rotate before the fixing ring 17 is installed. The purpose is that when the fixing ring 17 is installed on the gear 16, the first drive head 7 and the second drive head 12 have opposite tilt directions and the same tilt angle, which facilitates the installation between the assembled fixing ring 17, the gear 16, and the calibrated nozzle 1.

[0070] Example 2

[0071] This embodiment mainly introduces a flow calibration device for a nozzle, including a nozzle 1, a first braking mechanism and a second braking mechanism.

[0072] Please refer to Figure 1 and Figure 2The nozzle 1 includes a liquid inlet 2, an air inlet 3, an adjustment part 4, and a liquid chamber 5. One end of the nozzle 1 is provided with a nozzle structure, which, together with the liquid chamber 5, forms an air passage cavity. The liquid chamber 5 is connected to the air passage cavity. The first end of the adjustment part 4 and the first end of the liquid chamber 5 form a flow regulating valve, which is used to adjust the degree of communication between the liquid chamber 5 and the air passage cavity. The second end of the adjustment part 4, in order to facilitate the rotation drive of the adjustment part 4, is provided to pass through the second end of the liquid chamber 5 and a gear 16 in sequence. The gear 16 is used for transmission connection with the drive motor.

[0073] It should be understood that the regulating part 4 adjusts the flow rate by changing the opening between the liquid chamber 5 and the regulating part 4. In this embodiment, the first end of the regulating part 4 gradually tapers towards the nozzle structure. The first end of the regulating part 4 can be rotated to selectably insert into the first end of the liquid chamber 5. By changing the opening between the first end of the regulating part 4 and the first end of the liquid chamber 5, the flow rate is adjusted.

[0074] When the air pump is turned on, the airflow is ejected at high speed from the air passage cavity and the nozzle structure, creating a negative pressure environment at the first end of the liquid chamber 5 and inside the liquid chamber 5. The pressure difference between the nozzle structure and the first end of the liquid chamber 5 and inside the liquid chamber 5 drives the flow of the medium at the first end of the liquid chamber 5 and inside the liquid chamber 5. When the air pump is not adjusted, the larger the opening between the first end of the adjustment part 4 and the first end of the liquid chamber 5, the stronger the negative pressure between the first end of the liquid chamber 5 and the liquid chamber 5. When the opening between the first end of the adjustment part 4 and the first end of the liquid chamber 5 is 0, the liquid chamber 5 and the air passage cavity are independent of each other. Even if the air pump is adjusted, the pressure inside the liquid chamber 5 is not affected by the air pump.

[0075] Please refer to Figures 2-12 The first braking mechanism is used to calibrate the flow rate of the nozzle 1. It includes a flow meter connected to the liquid inlet 2 of the nozzle 1, an air pump connected to the air inlet 3 of the nozzle 1, and a first calibration device for adjusting the opening of the nozzle 1.

[0076] The first calibration device includes a first position sensor 6, a first drive head 7, a first base 8, and a first motor 9; the first drive head 7 has a first limiting part 10 inside, which is used to engage the adjustment part 4 of the nozzle 1; the first drive head 7 is disposed through the first base 8, and the first base 8 is fixed to the outer periphery of the first drive head 7; a second limiting part 11 is formed on the first base 8 for engaging the housing of the nozzle 1.

[0077] There is no linkage structure between the first drive head 7 and the first base 8; they are set independently. The first drive head 7 rotates inside the first base 8 under the drive of the first motor 9. The first limiting part 10 is a groove-shaped structure opened inside the first drive head 7, and the second limiting part 11 is a protrusion structure provided on the top of the first base 8.

[0078] The second limiting part 11 is engaged with the housing of the nozzle 1. During installation, the adjusting part 4 of the nozzle 1 is inserted into the first limiting part 10 to achieve limiting. Then the nozzle 1 is rotated. While the nozzle 1 is rotating, the first limiting part 10 is rotated. The first limiting part 10 and the nozzle 1 are rotated to the initial angle. The nozzle 1 is pressed down so that the housing of the nozzle 1 is engaged with the second limiting part 11.

[0079] The adjustment part 4 extends out of the second end of the liquid cavity 5 and forms an asymmetrical structure in its radial direction. The groove-shaped structure opened in the corresponding first limiting part 10 is also an asymmetrical structure. The adjustment part 4 and the first limiting part 10 engage with each other to ensure that after the adjustment part 4 is installed in the first limiting part 10, it can only move up and down relative to the first limiting part 10.

[0080] The second calibration device includes a second drive head 12, a second base 13, and a second motor 14; the top end of the second drive head 12 forms a third limiting part 15, which is used to engage the gear 16; the second base 13 is sleeved on the outer periphery of the second drive head 12 and rotates synchronously with the second drive head 12; the output end of the second motor 14 is connected to the second drive head 12; the second motor 14 drives the second drive head 12 to rotate, and the second drive head 12 drives the gear 16 to rotate, so as to change the relative position of the gear 16 and the fixed ring 17.

[0081] The gear 16 has a transmission groove 18 in the middle, and the transmission groove 18 is adapted to the shape of the adjustment part 4 of the nozzle 1; the third limiting part 15 passes through the transmission groove 18 and engages with the gear 16, and the second base 13 is used to support the gear 16.

[0082] The second mounting device includes a lifting cylinder 19, the output end of which forms a locking part 20. A fixing ring 17 is mounted on the locking part 20. The lifting cylinder 19 drives the fixing ring 17 to descend and mount the fixing ring 17 onto the gear 16. A Hall magnet is mounted on the fixing ring 17. A fourth limiting part 21 is formed on the locking part 20, which is used to limit the Hall magnet on the fixing ring 17.

[0083] The fourth limiting part 21 is a groove-shaped structure whose shape is adapted to the shape of the Hall magnet. When installing the fixing ring 17, the Hall magnet is aligned with the fourth limiting part 21 before installation.

[0084] The middle part of the engaging part 20 is provided with an adaptation hole to cooperate with the second driving head 12, and the width of the top end of the second driving head 12 gradually increases from top to bottom; when the lifting cylinder 19 installs the fixing ring 17 on the gear 16, the second driving head 12 is inserted into the ring part of the fixing ring 17 and the adaptation hole.

[0085] The engaging part 20 is made of elastic material, and the width of the top end of the second driving head 12 gradually increases from top to bottom. The lifting cylinder 19 drives the third limiting part 15 to move continuously downward. The side wall of the second driving head 12 squeezes the side wall of the adapting hole, forcing the fixing ring 17 to fall off the third limiting part 15. With the pressure of the lifting cylinder 19, the fixing ring 17 can be installed on the gear 16.

[0086] The engaging part 20 is positioned corresponding to the second limiting part 11. When the fixing ring 17 is installed on the engaging part 20, the Hall magnet on the fixing ring 17 is adapted to the shape of the nozzle 1.

[0087] During installation, the second drive head 12 passes through the gear 16, and the gear 16 is fitted onto the third limiting part 15 to achieve a limiting position. The fixing ring 17 is installed on the engaging part 20. The Hall magnet on the fixing ring 17 is kept in correspondence with the position of the nozzle 1 housing. That is, after the second motor 14 drives the second drive head 12 to rotate to the calibration position, the lifting cylinder 19 drives the fixing ring 17 to descend and install the fixing ring 17 onto the gear 16. The fixing ring 17 and the Hall magnet only move up and down and do not rotate with the second drive head 12.

[0088] In actual use, the installation steps are as follows:

[0089] S100. Insert the adjusting part 4 of the nozzle 1 into the first limiting part 10. Adjust the position of the nozzle 1 as needed to adjust the angle of the first limiting part 10 and press down the nozzle 1 so that the housing of the nozzle 1 is locked on the second limiting part 11, thereby realizing the installation between the nozzle 1 and the first base 8. Then connect the air pump to the air inlet 3 of the nozzle 1 through a pipe and the flow meter to the liquid inlet 2 of the nozzle 1 through a pipe.

[0090] The first position sensor 6 is used to detect whether the nozzle 1 is installed on the first base 8. If the first position sensor 6 does not detect that the nozzle 1 is correctly installed, the air pump cannot work normally.

[0091] S200: The gear 16 is fitted onto the third limiting part 15 to achieve limiting, and the retaining ring 17 is installed on the engaging part 20;

[0092] A Hall magnet is installed on the fixing ring 17, and a fourth limiting part 21 is formed on the engaging part 20. The fourth limiting part 21 is used to limit the Hall magnet on the fixing ring 17.

[0093] S300, the air pump is turned on, and the flow meter detects the flow rate in the liquid chamber 5; the first motor 9 drives the first drive head 7 to rotate, and calibrates the opening between the first end of the adjustment part 4 and the first end of the liquid chamber 5 until the flow rate in the liquid chamber 5 reaches the set flow rate.

[0094] When the air pump is turned on, the airflow is ejected at high speed from the air passage cavity and the nozzle structure, which creates a negative pressure environment at the first end of the liquid cavity 5 and inside the liquid cavity 5. The pressure difference between the nozzle structure and the first end of the liquid cavity 5 and inside the liquid cavity 5 drives the flow of the medium at the first end of the liquid cavity 5 and inside the liquid cavity 5. By detecting the flow rate inside the liquid cavity 5, the flow rate at the nozzle structure can be detected, thereby realizing the flow rate detection of the nozzle 1.

[0095] S400, the first motor 9 drives the first drive head 7 to rotate until the flow rate detected by the flow meter reaches the set value, and then stops rotating; the second motor 14 drives the second drive head 12 to rotate until the tilt direction of the first drive head 7 and the tilt angle of the second drive head 12 are opposite and the tilt direction is the same, so as to achieve synchronous rotation opposite to the rotation direction of the first drive head 7.

[0096] Specifically, the initial flow rate in the liquid chamber 5 is judged. If the flow rate is too small, the first motor 9 drives the first drive head 7 to rotate counterclockwise, and the second motor 14 drives the second drive head 12 to rotate clockwise. If the flow rate is too large, the first motor 9 drives the first drive head 7 to rotate clockwise, and the second motor 14 drives the second drive head 12 to rotate counterclockwise.

[0097] S500, the lifting cylinder 19 then drives the fixed ring 17 to descend and install the fixed ring 17 on the gear 16; then the assembled fixed ring 17, gear 16 and calibrated nozzle 1 are removed and reassembled.

[0098] The second motor 14 drives the second drive head 12 and the gear 16 to rotate before the fixing ring 17 is installed. The purpose is that when the fixing ring 17 is installed on the gear 16, the first drive head 7 and the second drive head 12 have opposite tilt directions and the same tilt angle, which facilitates the installation between the assembled fixing ring 17, the gear 16, and the calibrated nozzle 1.

[0099] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0101] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0102] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0103] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flow rate calibration device for a nozzle, characterized in that, include The frame and the first and second braking mechanisms mounted on the frame; The first braking mechanism is used to calibrate the flow rate of the nozzle (1), and includes a flow meter connected to the liquid inlet (2) of the nozzle (1), an air pump connected to the air inlet (3) of the nozzle (1), and a first calibration device for adjusting the opening of the nozzle (1). The second braking mechanism is used to perform position calibration of the relative position of the gear (16) and the fixed ring (17), and includes a second calibration device for adjusting the relative position of the gear (16) and the fixed ring (17) and a second mounting device for mounting the fixed ring (17) on the gear (16).

2. The flow calibration device for a nozzle as described in claim 1, characterized in that, The first calibration device includes a first drive head (7), a first base (8), and a first motor (9); the first drive head (7) has a first limiting part (10) inside, which is used to engage the adjustment part (4) of the nozzle (1); the first drive head (7) is disposed through the first base (8), and the first base (8) is fixed to the outer periphery of the first drive head (7); a second limiting part (11) is formed on the first base (8) for engaging the housing of the nozzle (1).

3. The flow calibration device for a nozzle as described in claim 2, characterized in that, The second calibration device includes a second drive head (12), a second base (13), and a second motor (14); the top of the second drive head (12) forms a third limiting part (15), which is used to engage the gear (16); the second base (13) is sleeved on the outer periphery of the second drive head (12) and rotates synchronously with the second drive head (12); the output end of the second motor (14) is connected to the second drive head (12); the second motor (14) drives the second drive head (12) to rotate, and the second drive head (12) drives the gear (16) to rotate, so as to change the relative position of the gear (16) and the fixed ring (17).

4. The flow calibration device for a nozzle as described in claim 3, characterized in that, The second installation device includes a lifting cylinder (19), the output end of which forms a locking part (20), and a fixing ring (17) is mounted on the locking part (20). The lifting cylinder (19) drives the fixing ring (17) to descend and installs the fixing ring (17) on the gear (16).

5. The flow calibration device for a nozzle as described in claim 3, characterized in that, When the fixing ring (17) is installed on the gear (16), the first driving head (7) and the second driving head (12) have opposite tilting directions and the same tilting angle.

6. The flow calibration device for a nozzle as described in claim 3, characterized in that, The first drive head (7) and the second drive head (12) achieve reverse synchronous movement under the drive of the first motor (9) and the second motor (14).

7. The flow calibration device for a nozzle as described in claim 4, characterized in that, A Hall magnet is installed on the fixing ring (17), and a fourth limiting part (21) is formed on the engaging part (20). The fourth limiting part (21) is used to limit the Hall magnet on the fixing ring (17).

8. The flow calibration device for a nozzle as described in claim 3, characterized in that, The adjusting part (4) of the nozzle (1) is inserted into the first limiting part (10) to achieve limiting; the second driving head (12) is inserted into the gear (16) to achieve limiting.

9. A flow calibration device for a nozzle as described in claim 4, characterized in that, The middle part of the engaging part (20) is provided with an adaptation hole in cooperation with the second drive head (12). When the lifting cylinder (19) installs the fixing ring (17) on the gear (16), the second drive head (12) is inserted into the ring part of the fixing ring (17) and the adaptation hole.

10. A flow calibration device for a nozzle as described in claim 3, characterized in that, The width of the top of the second drive head (12) gradually increases from top to bottom.

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