Self-adjustable lifting stirring device and method

Abstract

The present invention discloses a self-adjustable lifting stirring device and method, comprising a hydraulic thrust rod support, a hydraulic thrust rod, a motor support, a first distance measuring sensor, a second distance measuring sensor, a control system, a pressure sensor, a guide tube, an agitator, and a water pool. The pressure sensor detects liquid pressure to obtain liquid depth. Based on the liquid depth, the hydraulic thrust rod is controlled to drive the stirring impeller to a specific elevation. The speed of the speed-regulating motor is then controlled based on the specific elevation, liquid depth, the guide tube, the distance D1 between the liquid surface at the edge of the water pool and the motor support, and the distance D between the liquid surface at the middle of the water pool and the motor support, to maximize the liquid lifting height D2. This invention can increase the vortex area at the pool bottom, improve circulation dynamics, and overall achieve a more uniform and effective stirring effect.

Description

Technical Field

[0001] The invention relates to a self-adjustable lifting stirring device and method, belonging to the technical field of water treatment. Background Art

[0002] In water treatment processes, agitators are often used to improve the flow state of water bodies, and the water treatment results are a direct reflection of the quality of the equipment structure. The installation height and stirring speed of the agitator are crucial factors in the stirring process. Generally, after the stirring equipment is started, its installation height and speed cannot be changed. However, in actual situations, the water flow rate in and out of the sewage pool is not constant, which causes the water depth in the pool to change over time. If the installation height and stirring speed of the agitator remain unchanged when the water depth in the pool changes, the adaptability of the two will be greatly weakened, reducing the final effect of sewage treatment. In addition, the use of conventional stirring blades and guide tubes also leads to unsatisfactory stirring effects. Therefore, in these aspects, there is still room for further improvement of sewage stirring devices. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a self-adjustable lifting stirring device and method.

[0004] Technical solution: To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A self-adjustable lifting stirring device includes a hydraulic thrust rod bracket, a hydraulic thrust rod, a motor support frame, a first distance measuring sensor, a second distance measuring sensor, a control system, a pressure sensor, a guide tube, an agitator, and a water tank, wherein:

[0006] The guide tube is arranged in the water pool, and a stirring impeller is arranged in the guide tube.

[0007] The pressure sensor is arranged at the bottom of the pool and is connected to a control system.

[0008] The hydraulic thrust rod bracket is mounted above the pool. It is connected to the motor support bracket via a hydraulic thrust rod. The motor support bracket is slidably connected to the pool wall. The hydraulic thrust rod is used to drive the agitator impeller up and down within the pool. A speed-regulating motor is mounted on the motor support bracket, which is in transmission connection with the agitator impeller. The hydraulic thrust rod and speed-regulating motor are each connected to a control system.

[0009] The first distance measuring sensor is located outside the bottom of the motor support frame and is used to measure the distance D1 between the liquid surface at the edge of the pool and the motor support frame. The second distance measuring sensor is located in the middle of the bottom of the motor support frame and measures the distance D between the liquid surface in the middle of the pool and the motor support frame. The first and second distance measuring sensors are each connected to a control system.

[0010] The control system detects liquid pressure from a pressure sensor to determine liquid depth. Based on the liquid depth, the control system controls a hydraulic thrust rod to drive the impeller to a specific elevation. The control system then controls the speed of the speed-regulating motor based on the specific elevation, liquid depth, the guide tube, the distance D1 between the liquid surface at the edge of the pool and the motor support, and the distance D between the liquid surface at the center of the pool and the motor support, to maximize the liquid lift height D2.

[0011] Preferably, a pool wall pulley is provided between the outer side of the hydraulic thrust rod and the inner wall of the pool.

[0012] Preferably, the first distance measuring sensor and the second distance measuring sensor are located at the same elevation.

[0013] Preferably, the hydraulic thrust rod bracket is a cross-shaped bracket, or the hydraulic thrust rod bracket is an H-shaped bracket.

[0014] Preferably, the guide tube is a skirt-type guide tube.

[0015] Preferably, the diffusion angle of the lower skirt of the guide tube is 15-30°.

[0016] A self-adjustable liquid lifting method comprises the following steps:

[0017] Step 1: inject the sewage to be treated into the pool.

[0018] Step 2: The pressure sensor detects the liquid pressure and obtains the liquid depth.

[0019] Step 3: The control system controls the hydraulic thrust rod to drive the stirring impeller to a specific elevation according to the liquid depth.

[0020] Step 4: The control system controls the speed of the speed regulating motor according to the specific elevation, liquid depth, guide tube, the distance D1 between the liquid surface on the edge of the pool and the motor support frame, and the distance D between the liquid surface in the middle of the pool and the motor support frame, so that the liquid lifting height D2 is maximized, D2=D-D1.

[0021] Preferably, the hydraulic thrust rod moves vertically via a pool wall pulley.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] When the water depth inside the pool changes, the dynamic water pressure at the bottom of the pool changes. The pressure sensor receives the signal of the water pressure change and transmits it to the control system at the top of the pool, which adjusts the installation height of the agitator and the stirring speed. A distance sensor fixed to the motor bracket measures the height of the free liquid surface. When the optimal lifting standard is reached, it sends a signal to the control system to stop the system. This system, used in conjunction with new lifting blades and skirt-style guide tubes, can increase the vortex area at the bottom of the pool, improve circulation dynamics, and achieve a more uniform and sufficient stirring effect overall. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0026] A self-adjustable lifting stirring device, such as Figure 1 As shown, it includes a hydraulic thrust rod bracket 1, a hydraulic thrust rod 2, a motor support frame 4, a first distance measuring sensor 5, a second distance measuring sensor 6, a control system 8, a pressure sensor 9, a guide tube 10, an agitator 11, and a water pool 12, wherein:

[0027] The guide tube 10 is arranged in the water pool 12. A stirring impeller is arranged in the guide tube 10. The stirring impeller is a lifting blade and is installed on the hub with a blade placement angle of 30-60 degrees. In this embodiment, the preferred blade placement angle is 45 degrees. The stirring impeller is three flat stirring blades with folded angles and evenly distributed around the circumference. The midpoint of the outer edge of the blade and the midpoint of the blade body are used as the fold line, and the blade is folded 30 degrees in the vertical direction. The guide tube 10 is a skirt-type guide tube. The diffusion angle of the lower skirt of the guide tube 10 is 15-30 degrees. In this embodiment, the preferred diffusion angle of the lower skirt of the guide tube 10 is 22.5 degrees. The guide tube 10 is supported by a fixed bracket and the center of the water pool.

[0028] A pool wall pulley 3 is provided between the outer side of the hydraulic thrust rod 2 and the inner wall of the pool 12. The hydraulic thrust rod bracket 1 is a cross-shaped bracket, or the hydraulic thrust rod bracket 1 is an H-shaped bracket.

[0029] The pressure sensor 9 is disposed at the bottom of the pool 12 and is connected to the control system 8. Changes in the water depth H in the pool will cause changes in the dynamic water pressure. After receiving the signal, the pressure sensor 9 transmits the signal to the control system 8.

[0030] The hydraulic thrust rod bracket 1 is installed above the water pool 12. The hydraulic thrust rod bracket 1 is connected to the motor support frame 4 through the hydraulic thrust rod 2, and the motor support frame 4 is slidably connected to the wall of the water pool 12. The hydraulic thrust rod 2 is used to drive the stirring impeller to move up and down in the water pool 12. The motor support frame 4 is provided with a speed regulating motor 7, and the speed regulating motor 7 is connected to the stirring impeller by transmission. The hydraulic thrust rod 2 and the speed regulating motor 7 are respectively connected to the control system 8. After receiving the signal sent by the pressure sensor 9, the control system controls the hydraulic push rod 2 to move vertically through the pulley 3, thereby changing the installation height of the motor bracket 4 and thus changing the installation height h of the agitator 10, the height h being a specific elevation. At the same time, the adjustable speed motor 7 changes the rotation speed according to the control signal of the control system 8.

[0031] The first distance measuring sensor 5 is arranged on the outside of the bottom of the motor support frame 4, and the first distance measuring sensor 5 is used to measure the distance D1 between the liquid surface on the edge of the pool in the pool 12 and the motor support frame 4. The second distance measuring sensor 6 is arranged in the middle of the bottom of the motor support frame 4, and the second distance measuring sensor 6 measures the distance D between the liquid surface on the middle of the pool in the pool 12 and the motor support frame 4. The first distance measuring sensor 5 and the second distance measuring sensor 6 are located at the same elevation, and the horizontal distance is the radius of the pool. The first distance measuring sensor 5 and the second distance measuring sensor 6 are respectively connected to the control system 8. D-D1=D2. When the height reaches the optimal value, the first distance measuring sensor 5 and the second distance measuring sensor 6 send a signal to the control system 8 to enable the control system 8 to maintain relevant operations.

[0032] The control system 8 detects the liquid pressure from the pressure sensor 9 and determines the liquid depth. Based on the liquid depth, the hydraulic thrust rod 2 is controlled to drive the agitator impeller to a specific elevation. The speed of the speed-regulating motor 7 is then controlled based on the specific elevation, the liquid depth, the guide tube 10, the distance D1 between the liquid surface at the edge of the pool 12 and the motor support frame 4, and the distance D between the liquid surface at the center of the pool 12 and the motor support frame 4, to maximize the liquid lift height D2 (D2 = D-D1). A higher height indicates better agitation.

[0033]

[0034] in, Indicates the motor speed, represents the correlation function, Indicates a specific elevation, Indicates the liquid depth, Indicates the height of the guide tube. Indicates the diameter of the guide tube. Indicates the distance between the liquid surface on the edge of the pool 12 and the motor support frame 4, Indicates the distance between the liquid surface in the middle of the pool 12 and the motor support frame 4, Indicates the elevation value range. Indicates the range of liquid depth. Indicates the range of guide tube height. Indicates the range of guide tube diameter. express Value range, express Value range.

[0035] A self-adjustable liquid lifting method comprises the following steps:

[0036] Step 1: inject the sewage to be treated into the pool 12.

[0037] Step 2: The pressure sensor 9 detects the liquid pressure and obtains the liquid depth.

[0038] Step 3: The control system 8 controls the hydraulic thrust rod 2 to drive the stirring impeller to a specific height according to the liquid depth.

[0039] In step 4, the control system 8 controls the speed of the speed regulating motor 7 according to the specific elevation, liquid depth, guide tube 10, the distance D1 between the liquid surface on the edge of the pool 12 and the motor support frame 4, and the distance D between the liquid surface on the middle of the pool 12 and the motor support frame 4, so that the liquid lifting height is maximized.

[0040] During the test and debugging of stable water depth, when the water head is stable, the relationship between the installation elevation and D2 can be obtained by adjusting the mixer elevation, thereby determining the optimal installation elevation; the water level in the pool fluctuates greatly, and the optimal D2 can be achieved by re-adjusting its installation position.

[0041] D2=D-D1

[0042] like Figure 2 As shown, during the test, the distance D1 between the liquid surface on the edge of the pool and the motor support frame can be adjusted to obtain D2 under different D1 conditions, thereby determining the optimal position D1 and obtaining the maximum liquid lifting height D2. The graph during the test is a parabola.

[0043] The regulation system of the present invention can use the pressure sensor at the bottom of the pool to transmit signals to the regulation system, automatically adjust the installation height of the stirring impeller and the stirring speed according to the water pressure, and then control the control system 8 to stop the hydraulic thrust rod 2 according to the distance sensor. In combination with the lifting stirring impeller and the skirt-type guide tube, the stirring effect can be further improved.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A self-adjustable lifting stirring device, characterized in that: It comprises a hydraulic thrust rod bracket (1), a hydraulic thrust rod (2), a motor support frame (4), a first distance measuring sensor (5), a second distance measuring sensor (6), a control system (8), a pressure sensor (9), a guide tube (10), an agitator (11), and a water tank (12), wherein: The guide tube (10) is arranged in the water pool (12), and a stirring impeller is arranged in the guide tube (10); The pressure sensor (9) is arranged at the bottom of the pool (12), and the pressure sensor (9) is connected to the control system (8); The hydraulic thrust rod bracket (1) is installed above the water pool (12), the hydraulic thrust rod bracket (1) is connected to the motor support frame (4) through the hydraulic thrust rod (2), and the motor support frame (4) is slidably connected to the pool wall of the water pool (12), and the hydraulic thrust rod (2) is used to drive the stirring impeller to move up and down in the water pool (12); a speed regulating motor (7) is provided on the motor support frame (4), and the speed regulating motor (7) is transmission-connected to the stirring impeller; the hydraulic thrust rod (2) and the speed regulating motor (7) are respectively connected to the control system (8); The first distance measuring sensor (5) is arranged on the outside of the bottom of the motor support frame (4), and the first distance measuring sensor (5) is used to measure the distance D1 between the liquid surface on the edge of the pool (12) and the motor support frame (4); the second distance measuring sensor (6) is arranged in the middle of the bottom of the motor support frame (4), and the second distance measuring sensor (6) measures the distance D between the liquid surface on the middle of the pool (12) and the motor support frame (4); the first distance measuring sensor (5) and the second distance measuring sensor (6) are respectively connected to the control system (8); The control system (8) detects the liquid pressure based on the pressure sensor (9) to obtain the liquid depth; controls the hydraulic thrust rod (2) to drive the stirring impeller to a specific elevation based on the liquid depth; and then controls the speed of the speed regulating motor (7) based on the specific elevation, the liquid depth, the guide tube (10), the distance D1 between the liquid surface on the edge of the pool (12) and the motor support frame (4), and the distance D between the liquid surface on the middle of the pool (12) and the motor support frame (4) to maximize the liquid lifting height D2, where D2 = D-D1.

2. The self-adjustable lifting stirring device according to claim 1, characterized in that: A pool wall pulley (3) is provided between the outer side of the hydraulic thrust rod (2) and the inner wall of the pool (12).

3. The self-adjustable lifting stirring device according to claim 2, characterized in that: The first distance measuring sensor (5) and the second distance measuring sensor (6) are located at the same elevation.

4. The self-adjustable lifting stirring device according to claim 3, characterized in that: The hydraulic thrust rod bracket (1) is a cross-shaped bracket, or the hydraulic thrust rod bracket (1) is an H-shaped bracket.

5. The self-adjustable lifting stirring device according to claim 4, characterized in that: The guide tube (10) is a skirt-type guide tube.

6. The self-adjustable lifting stirring device according to claim 5, characterized in that: The diffusion angle of the lower skirt of the guide tube (10) is 15-30°.

7. A liquid lifting method based on the self-adjustable lifting stirring device according to claim 1, characterized in that: The following steps are involved: Step 1, injecting the sewage to be treated into the pool (12); Step 2: The pressure sensor (9) detects the liquid pressure and obtains the liquid depth; Step 3, the control system (8) controls the hydraulic thrust rod (2) to drive the stirring impeller to a specific elevation according to the liquid depth; In step 4, the control system (8) controls the speed of the speed regulating motor (7) according to the specific elevation, the liquid depth, the guide tube (10), the distance D1 between the liquid surface at the edge of the pool (12) and the motor support frame (4), and the distance D between the liquid surface at the middle of the pool (12) and the motor support frame (4), so as to maximize the liquid lifting height.

8. The liquid lifting method according to claim 7, characterized in that: The hydraulic thrust rod (2) moves vertically via the pool wall pulley (3).

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