Quantitative water adding device for solid water reducer

Abstract

The invention belongs to the technical field of gypsum board production, and discloses a solid water reducer quantitative water adding device which comprises a mixing box, a feeding port is formed in the mixing box, a plurality of spraying heads are installed in the mixing box, the spraying heads are externally connected with a water pump, a floating ball is arranged in the mixing box, the floating ball is connected with a floating ball connecting rod, and the floating ball connecting rod penetrates through the mixing box. The floating ball connecting rod is arranged in the mixing box and can slide in the vertical direction, the floating ball floats on the liquid level in the mixing box and ascends and descends along with changes of the liquid level, a photoelectric sensing assembly is arranged at the end of the floating ball connecting rod, electrically connected with the water pump and used for detecting the height of the end of the floating ball connecting rod, and a ball limiting structure is arranged on the mixing box. And when the liquid level in the mixing box reaches a preset liquid level, the ball limiting structure fixes the floating ball connecting rod or supports the floating ball. When the liquid level in the mixing box reaches the preset liquid level, the water pump is closed, the floating ball is fixed through the ball limiting structure, the position of the floating ball is not affected in the stirring process, and it is ensured that the concentration of the liquid water reducer reaches the standard.

Description

Technical Field

[0001] The invention relates to the technical field of gypsum board production, and in particular to a solid water reducing agent quantitative water adding device. Background Art

[0002] In the gypsum board production process, a certain amount of liquid water reducer needs to be added to the gypsum slurry to reduce the moisture in the gypsum slurry and improve the fluidity and formability of the gypsum slurry. In actual production, in order to reduce the cost of storage and transportation, the water reducer is usually prepared into a solid water reducer. Before use, the solid water reducer is mixed evenly with water in a certain proportion in a preparation cabin to prepare a liquid water reducer.

[0003] During the preparation process, if too much water is added, the pores inside the gypsum board will increase and the strength of the gypsum board will decrease. If too little water is added, the gypsum slurry will become dry and thick, making the gypsum board incomplete. Therefore, the raw material ratio of the liquid water reducing agent needs to be strictly controlled. Generally, the amount of water added can be observed and judged by judging the liquid level in the preparation chamber.

[0004] In order to improve the control accuracy of the amount of water added, a liquid level gauge is installed in the preparation cabin. The liquid level in the preparation cabin is detected by the liquid level gauge. When the liquid level is lower than a certain height, the water valve is automatically opened, and when the liquid level reaches a certain height, the water valve is automatically closed. After the water and solid water reducer are mixed, the mixed liquid needs to be stirred to promote uniform mixing. The stirring process will cause liquid level fluctuations, resulting in uncontrolled opening and closing of the water valve, an imbalance in the proportion of raw materials, and a non-standard concentration of the final liquid water reducer. Summary of the invention

[0005] To this end, the present invention provides a solid water reducing agent quantitative water adding device to solve the technical problem in the prior art that stirring causes liquid level fluctuations, causing the water valve to open and close out of control, resulting in an imbalance in the proportion of raw materials and causing the concentration of the prepared liquid water reducing agent to be non-standard.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A solid water reducing agent quantitative water adding device comprises a mixing box, the mixing box is provided with a feed port, a plurality of spray heads are installed in the mixing box, and the spray heads are externally connected to a water pump;

[0008] A float is arranged in the mixing box, and a float connecting rod is connected to the float. The float connecting rod passes through the mixing box and can slide in a vertical direction. The float floats on the liquid surface in the mixing box and rises and falls with the change of the liquid surface.

[0009] A photoelectric sensor assembly is disposed at a position directly opposite to the end of the float connecting rod, the photoelectric sensor assembly is electrically connected to the water pump, and the photoelectric sensor assembly detects the height position of the end of the float connecting rod;

[0010] When the height position of the end of the float connecting rod is lower than the height threshold, the liquid level in the mixing box has not reached the preset liquid level, the photoelectric sensor component sends a start signal to the water pump, the water pump starts and injects water into the mixing box through the sprinkler head, and when the height position of the end of the float connecting rod reaches the height threshold, the liquid level in the mixing box reaches the preset liquid level, the photoelectric sensor component sends a shutdown signal to the water pump, and the water pump is shut down;

[0011] Wherein, a ball limiting structure is arranged on the mixing box. After the liquid level in the mixing box reaches a preset liquid level, the ball limiting structure fixes the float connecting rod or supports the float to fix the height position of the float.

[0012] Furthermore, the ball limiting structure includes a guide tube and a controller arranged on the mixing box;

[0013] The guide tube and the controller are both installed on the mixing box through a bracket. The guide tube is arranged in a vertical direction. The controller is passed through in a vertical direction to form a through hole, and is directly opposite to the guide tube. The float connecting rod passes through the guide tube and the controller in sequence.

[0014] The controller has a threaded hole on the side, the threaded hole is connected to the through hole, a positioning bolt is installed in the threaded hole, and the end of the positioning bolt can pass through the threaded hole and abut against the side wall of the float connecting rod.

[0015] Furthermore, the ball limiting structure includes an isolation cabin installed in the mixing box and a floating plate movably installed in the isolation cabin;

[0016] The floating ball is arranged in the isolation cabin and placed above the floating plate, and the floating plate rises and falls with the change of the liquid level.

[0017] Furthermore, a floating rod is installed on the floating plate, a magnet is installed at the end of the floating rod away from the floating plate, and the floating rod passes through the mixing box and can slide in the vertical direction;

[0018] A graduated cylinder is installed on the mixing box, and a magnetic ring is installed near the top of the graduated cylinder;

[0019] The end of the float rod away from the float plate is located inside the scale cylinder. As the float rod rises until the magnet abuts against the magnetic ring, the magnet can be magnetically attracted to the magnetic ring. At the same time, the water pump switches from an open state to a closed state.

[0020] Furthermore, the magnet is an annular structure, the floating rod passes through the magnet, and its end extends out of the magnet to form a protruding rod segment;

[0021] The graduated cylinder opens upward, and the inner hole of the magnetic ring faces the protruding rod segment;

[0022] Wherein, the inner diameter of the magnetic ring is smaller than the outer diameter of the protruding rod segment, and the thickness of the magnetic ring is smaller than the length of the protruding rod segment.

[0023] Furthermore, a guide seat is provided on the mixing box at a position directly opposite to the float connecting rod, and the float connecting rod passes through the guide seat and is in sliding contact with the inner wall of the guide seat.

[0024] Furthermore, an air distribution plate is installed at the bottom of the mixing box, and the air distribution plate supplies airflow into the mixing box.

[0025] Furthermore, a dispersion plate is installed in the mixing box below the feed port, and the dispersion plate is used to disperse the solid water reducing agent fed from the feed port.

[0026] Furthermore, a driving motor is provided on the mixing box, an output end of the driving motor is connected to a driving shaft, and the driving shaft extends into the mixing box;

[0027] A first bevel gear is installed at the end of the driving shaft away from the driving motor, a second bevel gear is symmetrically arranged below the first bevel gear, the second bevel gear is connected to a third bevel gear through a connecting shaft, a fourth bevel gear is installed below the third bevel gear, and the fourth bevel gear is connected to the dispersion disk through a rotating shaft;

[0028] Wherein, the first bevel gear is meshed with the second bevel gear, and the third bevel gear is meshed with the fourth bevel gear.

[0029] Furthermore, a liquid discharge port is arranged on the side of the mixing box near the bottom.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention utilizes the property that the float floats on the water surface and rises and falls with the change of the liquid level. The height of the liquid level in the mixing box is obtained by detecting the height of the float connecting rod, so as to accurately obtain the amount of water added to the mixing box. When the liquid level in the mixing box reaches a preset liquid level, the water pump is turned off, and then the float is fixed by the ball limiting structure. The position of the float is not affected during the stirring process, thereby avoiding the imbalance of the raw material ratio due to liquid level fluctuations and ensuring that the concentration of the liquid water reducer meets the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0033] Figure 1 A schematic diagram of the internal structure of a solid water reducing agent quantitative water adding device provided in the first embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the side structure of a solid water reducing agent quantitative water adding device provided in the first embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the internal structure of a solid water reducing agent quantitative water adding device provided in the second embodiment of the present invention;

[0036] Figure 4 A schematic diagram of the internal structure of a solid water reducing agent quantitative water adding device provided in the second embodiment of the present invention;

[0037] Figure 5 for Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0038] Figure 6 for Figure 5 Schematic diagram of the structure in which the magnet is adsorbed on the magnetic circle;

[0039] Figure 7 It is a schematic diagram of the front structure of the dispersion disk in an embodiment of the present invention.

[0040] The numbers in the figure represent the following:

[0041] 1-mixing box; 2-feeding port; 3-sprinkler head; 4-floating ball; 5-photoelectric sensor assembly; 6-water pump; 7-air distribution plate; 8-floating ball connecting rod; 9-sphere limiting structure; 10-isolation cabin; 11-floating plate; 12-floating rod; 13-magnet; 14-gradient cylinder; 15-magnetic ring; 16-dispersion disk; 17-drain port; 18-driving motor; 19-driving shaft; 20-first bevel gear; 21-second bevel gear; 22-third bevel gear; 23-fourth bevel gear; 24-switch; 25-leg; 26-guide tube; 27-controller; 28-threaded hole; 29-positioning bolt; 30-protruding rod section; 31-guide seat. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1 and Figure 3 As shown, the present invention provides a solid water reducing agent quantitative water adding device, comprising a mixing box 1, a feeding port 2 is arranged on the mixing box 1, a plurality of spray heads 3 are installed in the mixing box 1, and a water pump 8 is externally connected to the spray head 3;

[0044] A float 4 is arranged in the mixing box 1, and a float connecting rod 8 is connected to the float 4. The float connecting rod 8 penetrates the mixing box 1 and can slide in the vertical direction. The float 4 floats on the liquid surface in the mixing box 1 and rises and falls with the change of the liquid surface.

[0045] A photoelectric sensor assembly 5 is disposed at a position directly opposite to the end of the float connecting rod 8. The photoelectric sensor assembly 5 is electrically connected to the water pump 6. The photoelectric sensor assembly 5 detects the height position of the end of the float connecting rod 8.

[0046] When the height position of the end of the float connecting rod 8 is lower than the height threshold, the liquid level in the mixing box 1 has not reached the preset liquid level, the photoelectric sensor component 5 sends a start signal to the water pump 6, the water pump 6 starts and injects water into the mixing box through the sprinkler head 3, and when the height position of the end of the float connecting rod 8 reaches the height threshold, the liquid level in the mixing box 1 reaches the preset liquid level, the photoelectric sensor component 5 sends a shut-down signal to the water pump 6, and the water pump 6 shuts down;

[0047] A ball limiting structure 9 is provided on the mixing box 1 . After the liquid level in the mixing box 1 reaches a preset liquid level, the ball limiting structure 9 fixes the float connecting rod 8 or supports the float 4 to fix the height position of the float 4 .

[0048] In actual operation, the amount of water added is first determined according to the mass and configuration ratio of the solid water reducing agent, the preset liquid level of the single water addition in the mixing box 1 is determined according to the amount of water added, and then the height threshold of the end of the float connecting rod 8 is set.

[0049] Initially, the height position of the end of the float connecting rod 8 is lower than the height threshold, the photoelectric sensor component 5 sends a start signal to the water pump 6, the water pump 6 is turned on, and the sprinkler head 3 injects water into the mixing box 1. As the water level rises, the float 4 rises, thereby driving the float connecting rod 8 to rise. When the height position of the end of the float connecting rod 8 reaches the height threshold, the photoelectric sensor component 5 sends a closing signal to the water pump 6, and the water pump 6 is closed. After the water is added, a certain amount of solid water reducing agent is added from the feed port 2, thereby accurately realizing the control of the water addition amount, ensuring the concentration of the liquid water reducing agent, and further improving the quality of the gypsum board.

[0050] When the mixed liquid water reducer is discharged, the float 4 will drop with the liquid level, and the float connecting rod 8 will drop accordingly. When the float connecting rod 8 drops, it will be lower than the height threshold, thereby triggering the photoelectric component 5 to send a start signal to the water pump 6. The water pump 6 starts and sprays water into the mixing box 1 through the spray head 3. At this time, the liquid water reducer in the mixing box 1 has not been completely discharged, and the sprayed water will mix with the remaining liquid water reducer, thereby causing the remaining liquid water reducer to be diluted. In order to prevent the water pump 6 from starting due to the drop of the float 4 when the liquid water reducer is not completely discharged, the present invention is designed to fix the float connecting rod 8 or support the float 4 through the ball limiting structure 9.

[0051] The spherical limiting structure 9 in the present invention can adopt the following two embodiments:

[0052] Embodiment 1:

[0053] like Figure 1 and Figure 2 As shown, the ball limiting structure 9 limits the height position of the float 4 by fixing the float connecting rod 8. Specifically, the ball limiting structure 9 includes a guide tube 26 and a controller 27 arranged on the mixing box 1. The guide tube 26 and the controller 27 are both installed on the mixing box 1 through a bracket. The guide tube 26 is arranged in the vertical direction, and the controller 27 is passed through in the vertical direction to form a through hole, and is opposite to the guide tube 26. The float connecting rod 8 passes through the guide tube 26 and the controller 27 in sequence. The controller 27 has a threaded hole 28 to the side, and the inner thread of the threaded hole 28 is equipped with a positioning bolt 29. The end of the positioning bolt 29 can pass through the threaded hole and abut against the side wall of the float connecting rod 8.

[0054] The end of the float connecting rod 8 is directly opposite to the guide tube 26 and the controller 27. The float connecting rod 8 moves in the guide tube 26 and the controller 27 as the float 4 rises. When the mixed liquid water reducing agent needs to be discharged, the float connecting rod 8 is first fixed to the controller 27 by tightening the positioning bolt 29, so that the float connecting rod 8 will not drop as the liquid level drops. That is to say, in the process of discharging the liquid water reducing agent, the water pump 6 is always in a closed state, thereby avoiding the phenomenon that the undischarged liquid water reducing agent is diluted;

[0055] Before the next water injection, the positioning bolt 29 is loosened first so that the float connecting rod 8 can slide vertically.

[0056] Embodiment 2:

[0057] like Figure 3 and Figure 4As shown, the ball limiting structure 9 limits the height position of the float 4 by supporting the float 4. Specifically, the ball limiting structure 9 includes an isolation cabin 10 installed in the mixing box 1 and a floating plate 11 movably installed in the isolation cabin 10. The float 4 is arranged in the isolation cabin 10 and placed above the floating plate 11. The floating plate 11 rises and falls with the change of the liquid level. When the liquid water reducing agent is discharged, the floating plate 11 can support the float 4 so that the float 4 will not fall with the drop of the liquid level.

[0058] Since the float plate 11 needs to rise and fall with the change of the liquid level, during the process of discharging the liquid water reducing agent, the float plate 11 needs to support the float ball 4 and keep it fixed. In order to enable the float plate 11 to support the float ball 4 and keep it fixed, a float rod 12 is installed on the float plate 11, and a magnet 13 is installed at the end of the float rod 12 away from the float plate 11. The float rod 12 passes through the mixing box 1 and can slide in the vertical direction. A scale cylinder 14 is installed on the mixing box 1, and a magnetic ring 15 is installed near the top of the scale cylinder 14.

[0059] The end of the floating rod 12 away from the floating plate 11 is located inside the graduated cylinder 14. As the floating rod 12 rises until the magnet 13 abuts against the magnetic ring 15, the magnet 13 can be magnetically attracted to the magnetic ring 15. When the floating plate 11 rises with the liquid level, the floating rod 12 located on the floating plate 11 also rises accordingly. The floating rod 12 can penetrate the mixing box 1, and the end of the floating rod 12 away from the floating plate 11 is located in the graduated cylinder 14. Figure 6 As shown, when the magnet 13 and the magnetic ring 15 are magnetically attracted, the end of the float connecting rod 8 reaches the height threshold, the water pump 6 is switched from the open state to the closed state, and the floating plate 11 supports the float 4 by the magnetic attraction of the magnet 13 and the magnetic ring 15, and then the float 4 will not drop as the liquid level drops;

[0060] Among them, the magnet 13 is a ring-shaped structure, the floating rod 12 passes through the magnet 13, and its end extends out of the magnet 13 to form a protruding rod segment 30. In order to allow the protruding rod segment 30 to pass through the magnetic ring 15 and the magnet 13 to be magnetically attracted to the magnetic ring, the inner diameter of the magnetic ring 15 is larger than the outer diameter of the protruding rod segment 30, the inner hole of the magnetic ring 15 is directly opposite to the protruding rod segment 30, and the thickness of the magnetic ring 15 is smaller than the length of the protruding rod segment 30. In order to meet the height of the floating plate 11 rising, the scale cylinder 14 should be long enough and open upward;

[0061] like Figure 5As shown, after the liquid water reducing agent is completely discharged, the end of the protruding rod section 30 is pressed to separate the magnet 13 from the magnetic attraction of the magnetic ring 15. The magnetic attraction between the magnet 13 and the magnetic ring 15 becomes smaller, so that the magnetic ring 15 cannot generate enough magnetic attraction to resist the gravity of the magnet 13 itself. The magnet 13 falls under the action of gravity, so that the float 11 and the float 4 fall freely. The length of the float rod 12 should be longer than the length of the float connecting rod 8, so that the float 11 is always located below the float 4, and when the float 11 drops to the initial state, the magnet 13 is located at the bottom of the scale cylinder 14, that is, the magnet 13 cannot pass through the opening on the mixing box 1 for passing the float rod 12.

[0062] A guide seat 31 is provided on the mixing box 1 at a position opposite to the float connecting rod 8. The float connecting rod 8 passes through the guide seat 31 and is in sliding contact with the inner wall of the guide seat 31. The guide seat 31 guides the movement direction of the float connecting rod 8. During the rising process, the float connecting rod 8 can maintain a vertical rising state, thereby making the measurement accuracy higher.

[0063] Both the first and second embodiments can avoid the problem that in the process of discharging the liquid water-reducing agent, the float 4 drops due to the drop in the liquid level, the water pump 6 is turned on, and the sprayed water is mixed with the liquid water-reducing agent that has not been discharged, causing the liquid water-reducing agent to be diluted. In the first embodiment, the float connecting rod 8 is fixed by tightening the positioning bolt 29, and in the second embodiment, the float 4 is supported by the floating plate 11 using the magnetic attraction of the magnet 13 and the magnetic ring 15.

[0064] On the basis of the first embodiment, the second embodiment is simpler. The structure in the second embodiment indirectly fixes the float 4 directly through magnetic attraction, and no additional operation is required. When the float 4 needs to be released, it is only necessary to press the protruding rod section 30, which makes the operation simpler and faster.

[0065] Among them, the design of the structure of the isolation cabin 10 in the second embodiment ensures that during the water injection process, the spread of ripples on the water surface can be further blocked, thereby preventing the fluctuating water surface from driving the floating plate 11 to shake, causing the floating plate 11 to be unstable. The instability of the floating plate 11 may cause the floating ball 4 and the floating ball connecting rod 8 to fluctuate in the upper and lower positions, causing the water pump 6 to be opened and closed repeatedly for many times, which will not only cause inaccurate water addition, but may also cause the water pump 6 to be damaged;

[0066] The bottom of the isolation cabin 10 is open, and the water level inside the isolation cabin 10 is at the same height as the water level outside the isolation cabin 10. The float 4 rises with the liquid level, and the height position of the end of the float connecting rod 8 can smoothly reach the height threshold, and the water pump 6 can be shut down in time to accurately control the amount of water added. In addition, the design of the scale on the scale cylinder 14 can display the state of the rising liquid level in the mixing box 1, thereby helping the staff to observe in time so as to facilitate the next step of the process.

[0067] After adding the solid water reducer and water, the solid water reducer and water need to be fully mixed by stirring. In order to make the solid water reducer fully dissolved in water, an air distribution plate 7 is installed at the bottom of the mixing box 1. The air distribution plate 7 supplies airflow into the mixing box 1. The air distribution plate 7 is covered with wind caps. The compressed air is converted into a uniform airflow after being processed by the wind caps. The liquid water reducer is evenly stirred by the evenly distributed airflow.

[0068] When the solid water reducing agent is put into the mixing box 1 from the feed port 2, it will accumulate at the bottom of the mixing box 1 due to gravity. When the spray head 3 sprays water, it is difficult for the water to be fully mixed with the accumulated solid water reducing agent. In order to fully mix the solid water reducing agent with water, a dispersion plate 16 is installed below the feed port 2 in the mixing box 1. Figure 7 As shown, a plurality of small holes are provided on the dispersion disk 16 to help the solid water reducer to be scattered to different areas of the liquid surface. The dispersion disk 16 rotates at high speed to disperse the solid water reducer fed from the feed port 2, and the solid water reducer is dispersed to different areas of the liquid surface.

[0069] The solid water reducer may be mixed with insoluble small particles or impurities. These small particles and impurities are difficult to flow out with the liquid water reducer during discharge, and are deposited at the bottom of the mixing box 1, making it difficult to clean them, and may block the air holes of the air distribution plate 7. In order to prevent small particles and impurities from depositing at the bottom of the mixing box 1, a detachable screen may be placed in the feed port 2. When the solid water reducer is added to the mixing box 1 through the feed port 2, it is filtered through the screen to remove small particles and impurities. The small particles and impurities on the screen only need to be cleaned regularly.

[0070] In order to put the solid water reducer into the mixing box more quickly, at least two feed ports 2 are opened on the mixing box 1, and a dispersion disk 16 is set at the bottom of the feed port 2. The dispersion disk 16 adopts a rotary material distribution. Specifically, a driving motor 18 is arranged on the mixing box 1, and a driving shaft 19 is connected to the output end of the driving motor 18. The driving shaft 19 extends into the mixing box 1, and a first bevel gear 20 is installed at the end of the driving shaft 19 away from the driving motor 18. Second bevel gears 21 are respectively arranged below the first bevel gears 20, and the second bevel gears 21 are connected to the third bevel gears 22 through a connecting shaft. A fourth bevel gear 23 is installed below the third bevel gear 22, and the fourth bevel gear 23 is connected to the dispersion disk 16 through a rotating shaft.

[0071] Among them, the first bevel gear 20 is meshed with the second bevel gear 21, the third bevel gear 22 is meshed with the fourth bevel gear 23, the drive motor 18 is started to drive the first bevel gear 20 to rotate, the first bevel gear 20 is meshed with the second bevel gear 21 to drive the third bevel gear 22 to rotate, the third bevel gear 22 is meshed with the fourth bevel gear 23, so that the dispersion disk 16 rotates, accelerating and driving the solid water reducer to mix more evenly with different liquid surface areas.

[0072] In order to facilitate the discharge of the liquid water reducing agent, a drain port 17 is provided on the side of the mixing box 1 near the bottom, and a switch 24 is provided at the drain port 17. When the liquid water reducing agent is evenly stirred, the switch 24 is turned on to discharge the liquid water reducing agent for standby use. When the liquid water reducing agent is completely discharged, the switch 24 is closed.

[0073] A plurality of legs 25 are installed at the bottom of the mixing box 1 , and the legs 25 prop up the mixing box 1 to keep it away from the ground, so that the receiving container is placed below the discharge port 17 .

[0074] A certain mass of solid water reducer is added through the feed port 2, industrial water flows into the mixing box 1 through the sprinkler head 3, and the liquid level is controlled by the float 6. The float connecting rod 8 is inserted into the mixing box 1, and the height threshold is set to achieve quantitative configuration of the water reducer. Compressed air is sent into the air distribution plate 7 to perform air flow homogenization stirring on the liquid water reducer, thereby improving the disadvantages of the traditional stirring motor. The liquid water reducer is discharged through the discharge port 17 and the liquid water reducer is loaded into a tank for standby use.

[0075] An observation window may also be provided on the mixing box 1, through which the mixing state of the liquid water reducing agent in the mixing box 1 may be observed at any time, thereby adjusting the amount of compressed air supplied to the air distribution plate 7, wherein the air supply device may be a fan or other device.

[0076] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A solid water reducing agent quantitative water adding device, characterized in that: It comprises a mixing box (1), the mixing box (1) is provided with a feed port (2), a plurality of spray heads (3) are installed in the mixing box (1), and the spray heads (3) are externally connected to a water pump (8); A float (4) is arranged in the mixing box (1), and a float connecting rod (8) is connected to the float (4). The float connecting rod (8) passes through the mixing box (1) and can slide in a vertical direction. The float (4) floats on the liquid surface in the mixing box (1) and rises and falls with changes in the liquid surface. A photoelectric sensor assembly (5) is arranged at a position directly opposite to the end of the float connecting rod (8), the photoelectric sensor assembly (5) is electrically connected to the water pump (6), and the photoelectric sensor assembly (5) detects the height position of the end of the float connecting rod (8); When the height position of the end of the float connecting rod (8) is lower than the height threshold, the liquid level in the mixing box (1) has not reached the preset liquid level, the photoelectric sensor component (5) sends a start signal to the water pump (6), the water pump (6) starts and injects water into the mixing box through the sprinkler head (3), and when the height position of the end of the float connecting rod (8) reaches the height threshold, the liquid level in the mixing box (1) reaches the preset liquid level, the photoelectric sensor component (5) sends a shut-down signal to the water pump (6), and the water pump (6) shuts down; Wherein, a ball limiting structure (9) is provided on the mixing box (1). After the liquid level in the mixing box (1) reaches a preset liquid level, the ball limiting structure (9) fixes the float connecting rod (8) or supports the float (4) to fix the height position of the float (4).

2. A solid water reducing agent quantitative water adding device according to claim 1, characterized in that: The ball limiting structure (9) comprises a guide tube (26) and a controller (27) arranged on the mixing box (1); The guide tube (26) and the controller (27) are both installed on the mixing box (1) through a bracket. The guide tube (26) is arranged in the vertical direction. The controller (27) is passed through in the vertical direction to form a through hole, and is directly opposite to the guide tube (26). The float connecting rod (8) passes through the guide tube (26) and the controller (27) in sequence. The controller (27) has a threaded hole (28) on the side, the threaded hole (28) is connected to the through hole, the threaded hole (28) is internally threaded with a positioning bolt (29), and the end of the positioning bolt (29) can pass through the threaded hole (28) and abut against the side wall of the float connecting rod (8).

3. A solid water reducing agent quantitative water adding device according to claim 1, characterized in that: The spherical limiting structure (9) comprises an isolation cabin (10) installed in the mixing box (1) and a floating plate (11) movably installed in the isolation cabin (10); The floating ball (4) is arranged in the isolation cabin (10) and is placed above the floating plate (11), and the floating plate (11) rises and falls in response to changes in the liquid level.

4. A solid water reducing agent quantitative water adding device according to claim 3, characterized in that: A floating rod (12) is installed on the floating plate (11), a magnet (13) is installed at the end of the floating rod (12) away from the floating plate (11), and the floating rod (12) penetrates the mixing box (1) and can slide in a vertical direction; The mixing box (1) is provided with a graduated cylinder (14), and a magnetic ring (15) is provided inside the graduated cylinder (14) near the top; The end of the floating rod (12) away from the floating plate (11) is located inside the graduated cylinder (14). As the floating rod (12) rises until the magnet (13) abuts against the magnetic ring (15), the magnet (13) can be magnetically attracted to the magnetic ring (15). At the same time as the magnet (13) is magnetically attracted to the magnetic ring (15), the water pump (6) switches from an open state to a closed state.

5. A solid water reducing agent quantitative water adding device according to claim 4, characterized in that: The magnet (13) is an annular structure, the floating rod (12) passes through the magnet (13), and its end extends out of the magnet (13) to form a protruding rod section (30); The graduated cylinder (14) is open upward, and the inner hole of the magnetic ring (15) is directly opposite to the protruding rod section (30); The inner diameter of the magnetic ring (15) is greater than the outer diameter of the protruding rod segment (30), and the thickness of the magnetic ring (15) is less than the length of the protruding rod segment (30).

6. A solid water reducing agent quantitative water adding device according to claim 5, characterized in that: A guide seat (31) is provided on the mixing box (1) at a position directly opposite to the float connecting rod (8); the float connecting rod (8) passes through the guide seat (31) and is in sliding contact with the inner wall of the guide seat (31).

7. A solid water reducing agent quantitative water adding device according to claim 1, characterized in that: An air distribution plate (7) is installed at the bottom of the mixing box (1), and the air distribution plate (7) supplies air flow into the mixing box (1).

8. A solid water reducing agent quantitative water adding device according to claim 1, characterized in that: A dispersion plate (16) is installed in the mixing box (1) below the feed port (2), and the dispersion plate (16) is used to disperse the solid water reducing agent fed from the feed port (2).

9. A solid water reducing agent quantitative water adding device according to claim 8, characterized in that: The mixing box (1) is provided with a driving motor (18), the output end of the driving motor (18) is connected to a driving shaft (19), and the driving shaft (19) extends into the mixing box (1); A first bevel gear (20) is installed at the end of the drive shaft (19) away from the drive motor (18); a second bevel gear (21) is symmetrically arranged below the first bevel gear (20); the second bevel gear (21) is connected to a third bevel gear (22) via a connecting shaft; a fourth bevel gear (23) is installed below the third bevel gear (22); and the fourth bevel gear (23) is connected to the dispersion disk (16) via a rotating shaft; The first bevel gear (20) is meshed with the second bevel gear (21), and the third bevel gear (22) is meshed with the fourth bevel gear (23).

10. A solid water reducing agent quantitative water adding device according to claim 1, characterized in that: A liquid discharge port (17) is provided on the side of the mixing box (1) near the bottom.

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