Dosing device for tap water treatment

Abstract

The invention is applicable to the technical field of tap water dosing, and provides a dosing device for tap water treatment, the dosing device comprises a device frame and a suspension plate fixedly mounted on the device frame, and a liquid storage tank for storing liquid medicine and a particle box for storing particle agents are fixedly mounted on the suspension plate; the top of the liquid storage tank is fixedly provided with a supplementing tank used for temporarily storing and supplementing liquid medicine, a liquid supplementing pipe is installed between the top of the liquid storage tank and the bottom of the supplementing tank, and an electromagnetic valve is installed on the liquid supplementing pipe and used for controlling supplementing of the liquid medicine. A liquid pump is fixedly installed on the device frame, a liquid discharging pipe is fixedly installed at the liquid inlet end of the liquid pump, and the liquid inlet end of the liquid discharging pipe is fixedly connected with the bottom of the liquid storage tank. According to the dosing device for tap water treatment, automatic generation of liquid medicine is achieved, supplementing and proportioning of the liquid medicine can be accurately controlled, manual intervention is reduced through automatic operation, the working efficiency is improved, meanwhile, stable supply of the liquid medicine is guaranteed, and shutdown is not needed.

Description

Technical Field

[0001] The present invention belongs to the technical field of tap water dosing, and particularly relates to a dosing device for tap water treatment. Background Art

[0002] During the process of tap water treatment, it is often necessary to add drugs. Currently, the main addition method is to set up a large liquid storage tank, in which a prepared solution is stored. During the tap water treatment process, the solution is quantitatively pumped into the pipeline through which the tap water flows by a liquid pump to achieve mixing, and then enters each pool for reaction treatment.

[0003] Since most of the pharmaceutical solutions currently used are prepared by staff by mixing granular solid pharmaceuticals with water, every time the tank is used up or about to be used up, it is necessary for workers to manually re-incorporate the pre-prepared liquid medicine into the liquid storage tank; because the equipment cannot generate the required supplementary liquid medicine by itself, there are certain differences in the proportion of the liquid medicine added each time, resulting in unstable tap water treatment effects and inconvenient manual operation. Summary of the Invention

[0004] The present invention provides a dosing device for tap water treatment, aiming to solve the problem in the above background art that the currently used dosing equipment cannot generate the required supplementary liquid medicine by itself, resulting in certain differences in the proportion of the liquid medicine added each time and unstable tap water treatment effects.

[0005] To solve the above problems, the present invention is realized as follows. A dosing device for tap water treatment includes: a device frame and a suspension plate fixedly installed on the device frame. A liquid storage tank for storing liquid medicine and a granule box for storing granular pharmaceuticals are fixedly installed on the suspension plate. A supplementary tank for temporarily storing supplementary liquid medicine is fixedly installed on the top of the liquid storage tank. A liquid supplement pipe is installed between the top of the liquid storage tank and the bottom of the supplementary tank, and an electromagnetic valve is installed on the liquid supplement pipe to control the supplement of the liquid medicine. A liquid pump is fixedly installed on the device frame. A liquid discharge pipe is fixedly installed at the liquid inlet end of the liquid pump, and the liquid inlet end of the liquid discharge pipe is fixedly connected to the bottom of the liquid storage tank. The liquid discharge end of the liquid pump is used to connect to the tap water circulation pipe. A control box is fixedly installed on the device frame to control the liquid pump and the electromagnetic valve. A water level sensor one is fixedly installed on the liquid storage tank, and the sensing end of the water level sensor one is located inside the liquid storage tank to sense the liquid level depth inside the liquid storage tank, thereby transmitting a signal to the control box to control the opening and closing of the electromagnetic valve. A water level sensor two is fixedly installed on the supplementary tank, and the sensing end of the water level sensor two is located inside the supplementary tank to sense the liquid level depth inside the supplementary tank, thereby transmitting a signal to the control box to control the operation of the liquid medicine mixing and supplementing mechanism and the powder supplementing mechanism. The liquid medicine mixing and supplementing mechanism and the powder supplementing mechanism are installed between the supplementary tank and the granule box to supplement the generated liquid medicine into the supplementary tank.

[0006] Preferably, an exhaust pipe is fixedly installed on the top of the supplementary tank to discharge excess air in the supplementary tank.

[0007] Preferably, the medicine liquid mixing and replenishing mechanism comprises a mixing and replenishing pipe, a mixing box, a water replenishing pipe and a medicine powder replenishing pipe. The mixing box is fixedly installed on the top of the replenishing tank for mixing the medicine with water. The mixing and replenishing pipe and the water replenishing pipe are respectively fixedly installed on the corresponding two sides of the mixing box, and are respectively used to take in water and discharge the mixed medicine solution. The discharge end of the mixing and replenishing pipe is fixedly connected to the top of the replenishing tank for replenishing the medicine solution into the replenishing tank. The medicine powder replenishing pipe is fixedly installed on the top of the mixing box. The powder discharge end of the medicine powder replenishing pipe is obliquely connected to the mixing box, and its inclination direction is toward the liquid inlet end of the mixing and replenishing pipe, and is staggered with the discharge end of the water replenishing pipe for preventing backflow. The water replenishing pipe and the medicine powder replenishing pipe are both provided with solenoid valves, and are connected to the control box for use in conjunction with water level sensor 1 and water level sensor 2. The powder inlet end of the medicine powder supply pipe is connected to the medicine powder replenishing mechanism for introducing medicine powder.

[0008] Preferably, the powder replenishing mechanism includes a drainage cylinder and a grinding box, the drainage cylinder is fixedly installed at the powder inlet end of the powder supply pipe for supplying medicine powder, the grinding box is fixedly installed at the bottom of the particle box for receiving particles discharged from the particle box and grinding the medicine particles into medicine powder, a powder suction pipe is fixedly installed between the bottom of the grinding box and the drainage cylinder for draining the medicine powder to the powder supply pipe, a fan shaft is rotatably installed on the drainage cylinder, fan blades are fixedly installed on the fan shaft, the fan blades are located in the drainage cylinder, and are used to drain the medicine powder when the fan shaft rotates.

[0009] Preferably, a discharge shaft is rotatably installed at the discharge port of the particle box, and an impeller shaft located in the discharge port of the particle box is fixedly sleeved on the discharge shaft, which is used to evenly discharge the pharmaceutical particles in the particle box into the grinding box when rotating. A motor is fixedly installed on the side of the particle box, and the output shaft of the motor is fixedly connected to one end of the discharge shaft for controlling the rotation of the discharge shaft and the impeller shaft. The motor is connected to a control box for use with an electromagnetic valve, water level sensor 1 and water level sensor 2.

[0010] Preferably, water guide ports are provided on both corresponding sides of the mixing box, the two water guide ports are located on the same horizontal plane, and correspond to the liquid inlet end of the mixing replenishment pipe and the drainage end of the water replenishment pipe respectively, for guiding the flow of solution, thereby reducing the backflow to the powder inlet, the powder inlet is provided at the top of the mixing box, and is arranged corresponding to the powder discharge end of the powder replenishment pipe, the inner wall between the powder replenishment pipe and the water guide port corresponding to the water replenishment pipe is in a "V" shape structure, for avoiding direct flushing of water.

[0011] Preferably, the makeup water pipe is wrapped with a heat preservation sleeve, and an electric heating coil is arranged outside the makeup water pipe and located inside the heat preservation sleeve for heating the water flowing into the makeup water pipe, so as to improve the mixing effect of the medicament. The electric heating coil is connected to the control box and is used in cooperation with the electromagnetic valve, water level sensor 1 and water level sensor 2.

[0012] Preferably, two crushing shafts are rotatably installed in the grinding box. Crushing rollers are fixedly sleeved on both crushing shafts. The two crushing rollers are engaged with each other for grinding the medicament particles entering the grinding box. Synchronous gears are fixedly installed at the same end of the two crushing shafts. The two synchronous gears are engaged with each other for controlling the relative rotation of the two crushing shafts and the crushing rollers, so as to realize the grinding of the medicament particles. Chain wheels 1 are fixedly installed at the same end of one of the crushing shafts and the feeding shaft. The same chain 1 is sleeved on the two chain wheels 1 for realizing the synchronous rotation of the two crushing shafts and the feeding shaft driven by the motor.

[0013] Preferably, the tops of the liquid storage tank and the particle box are both provided with replenishing ports, and covers are arranged at the positions.

[0014] Preferably, the fan shaft rotates synchronously with the crushing shaft, and the rotation speed of the fan shaft is 6-20 times that of the crushing shaft.

[0015] Compared with the related art, the chemical dosing device for tap water treatment provided by the present invention has the following beneficial effects:

[0016] Compared with the prior art, the chemical dosing device for tap water treatment provided by the present solution realizes the automatic generation of the liquid medicine. The liquid medicine replenishment and ratio can be accurately controlled. The automatic operation reduces the manual intervention, improves the work efficiency, and at the same time ensures the stable supply of the liquid medicine without shutdown. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a rear perspective structural schematic diagram of a chemical dosing device for tap water treatment provided by the present invention;

[0018] Figure 2 is a front perspective structural schematic diagram of a chemical dosing device for tap water treatment provided by the present invention;

[0019] Figure 3 is Figure 2 an enlarged structural schematic diagram of part A shown in ;

[0020] Figure 4 is Figure 2 an enlarged structural schematic diagram of part B shown in ;

[0021] Figure 5 is Figure 2 an enlarged structural schematic diagram of part C shown in ;

[0022] Figure 6 is Figure 5 an enlarged structural schematic diagram of part D shown in

[0023] Figure 7 a front view sectional structural schematic diagram of a chemical dosing device for tap water treatment provided by the present invention;

[0024] Figure 8 is Figure 7 an enlarged structural schematic diagram of part E shown in

[0025] Figure 9 is Figure 7 an enlarged structural schematic diagram of part F shown in

[0026] Figure 10 is Figure 9 an enlarged structural schematic diagram of part G shown in

[0027] Figure 11 is Figure 9 an enlarged structural schematic diagram of part H shown in

[0028] Figure 12 a structural schematic diagram of a granule box and a powder supplement mechanism;

[0029] Figure 13 is Figure 12 a bottom view three-dimensional structural schematic diagram of the part shown in

[0030] Figure 14 is Figure 13 an enlarged structural schematic diagram of part I shown in

[0031] Figure 15 is Figure 13 an enlarged structural schematic diagram of part J shown in

[0032] Figure 16 a transmission structural schematic diagram of an impeller shaft and a crushing shaft;

[0033] Figure 17 a structural schematic diagram of a fan shaft part;

[0034] Figure 18 a structural schematic diagram of a liquid medicine mixing and supplement mechanism;

[0035] Figure 19 a structural schematic diagram of a power transmission short shaft part.

[0036] Reference numerals: 1, device frame; 2, suspension plate; 3, liquid storage tank; 4, replenishment tank; 5, particle box; 6, liquid replenishing pipe; 7, liquid pump; 8, liquid discharge pipe; 9, control box; 10, water level sensor I; 11, water level sensor II; 12, exhaust pipe; 13, mixing and replenishing pipe; 14, mixing box; 15, water supply pipe; 16, medicine powder supply pipe; 17, drainage cylinder; 18, powder grinding box; 19, powder suction pipe; 20, fan shaft; 21, fan blade; 22, blanking shaft; 23, impeller shaft; 24, motor; 25, water guide port; 26, medicine powder inlet; 27, heat preservation sleeve; 28, electric heating coil; 29, crushing shaft; 30, crushing roller; 31, synchronous gear; 32, sprocket I; 33, chain I; 34, cleaning shaft; 35, brush roller; 36, pulley I; 37, synchronous belt I; 38, belt pulley; 39, pulley II; 40, synchronous belt II; 41, auger; 42, long power transmission shaft; 43, sprocket II; 44, chain II; 45, conical tooth disc; 46, driving conical gear; 47, stabilizing frame; 48, screen; 49, reciprocating screw; 50, cleaning brush plate; 51, guide rod; 52, support shaft plate; 53, short power transmission shaft; 54, driven conical gear; 55, upper half conical gear; 56, lower half conical gear; 57, pulley III; 58, synchronous belt III; 59, stirring shaft; 60, stirring rod; 61, sprocket III; 62, chain III; 63, mounting shaft frame; 64, guide chain shaft; 65, support plate. Detailed implementation manners

[0037] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0038] An embodiment of the present invention provides a chemical dosing device for tap water treatment, as Figures 1 - 19As shown in the figure, the chemical dosing device for tap water treatment includes: a device frame 1 and a suspension plate 2 fixedly installed on the device frame 1. A liquid storage tank 3 for storing liquid medicine and a granule box 5 for storing granular medicine are fixedly installed on the suspension plate 2. A supplementary tank 4 for temporarily storing supplementary liquid medicine is fixedly installed on the top of the liquid storage tank 3. A liquid replenishing pipe 6 is installed between the top of the liquid storage tank 3 and the bottom of the supplementary tank 4. An electromagnetic valve is installed on the liquid replenishing pipe 6 to control the replenishment of the liquid medicine. A liquid pump 7 is fixedly installed on the device frame 1. A liquid discharge pipe 8 is fixedly installed at the liquid inlet end of the liquid pump 7. The liquid inlet end of the liquid discharge pipe 8 is fixedly connected to the bottom of the liquid storage tank 3. The liquid discharge end of the liquid pump 7 is used to connect to the tap water circulation pipe. A control box 9 is fixedly installed on the device frame 1 to control the liquid pump 7 and the electromagnetic valve. A water level sensor 10 is fixedly installed on the liquid storage tank 3. The sensing end of the water level sensor 10 is located inside the liquid storage tank 3 to sense the liquid level depth inside the liquid storage tank 3, and then transmit a signal to the control box 9 to control the opening and closing of the electromagnetic valve. A water level sensor 11 is fixedly installed on the supplementary tank 4. The sensing end of the water level sensor 11 is located inside the supplementary tank 4 to sense the liquid level depth inside the supplementary tank 4, and then transmit a signal to the control box 9 to control the operation of the liquid medicine mixing and replenishing mechanism and the powder medicine replenishing mechanism. The liquid medicine mixing and replenishing mechanism and the powder medicine replenishing mechanism are installed between the supplementary tank 4 and the granule box 5 to replenish the generated liquid medicine into the supplementary tank 4.

[0039] In this embodiment, when the chemical dosing device for tap water treatment is in use, first, the granular medicine is stored in the granule box 5, and a certain amount of liquid medicine is pre-prepared in the supplementary tank 4. When the water level in the liquid storage tank 3 drops to the preset low water level due to the consumption of the liquid medicine, the water level sensor 10 transmits the sensing signal to the control box 9. The control box 9 immediately controls the opening of the electromagnetic valve on the liquid replenishing pipe 6. The liquid medicine in the supplementary tank 4 flows into the liquid storage tank 3 through the liquid replenishing pipe 6 until the water level in the liquid storage tank 3 returns to the set value. At this time, the supplementary tank 4 is emptied and the electromagnetic valve is closed.

[0040] At the same time, when the liquid medicine in the supplementary tank 4 is emptied due to being replenished into the liquid storage tank 3, the electromagnetic valve closes to seal the liquid replenishing pipe 6. At this time, the water level sensor 11 cannot sense the solution in the supplementary tank 4. The water level sensor 11 transmits a signal to the control box 9. After confirming that the electromagnetic valve 6 on the liquid replenishing pipe 6 is closed, the control box 9 starts the liquid medicine mixing and replenishing mechanism and the powder medicine replenishing mechanism, takes the granular medicine from the granule box 5 and mixes it with water to form a new liquid medicine, and replenishes it into the supplementary tank 4 until the water level in the supplementary tank 4 returns to the set value and is sensed by the water level sensor 11, then stops mixing the new solution.

[0041] When the liquid medicine is discharged from the liquid replenishing pipe 6, since the time difference for each emptying is basically equal, there is a time difference between liquid discharge and replenishment of new liquid medicine. That is, when the electromagnetic valve of the liquid replenishing pipe 6 is open, the liquid medicine is not proportioned, and when the electromagnetic valve of the liquid replenishing pipe 6 is closed, new liquid medicine is proportioned. The liquid pump 7 works continuously, and pumps the liquid medicine in the liquid storage tank 3 to the tap water circulation pipe through the liquid discharge pipe 8 to achieve quantitative addition of the liquid medicine.

[0042] Through the precise sensing of the water level sensor one 10 and the water level sensor two 11, combined with the intelligent control of the control box 9, precise control of liquid medicine replenishment and proportioning is achieved. This design not only ensures the stability of the liquid medicine concentration, improves the tap water treatment effect, but also reduces manual intervention through automated operation, improving work efficiency. At the same time, the continuous operation of the liquid pump 7 ensures the stable supply of the liquid medicine, further enhancing the overall operation efficiency of the device.

[0043] This device integrates key components such as the liquid storage tank 3, the replenishment tank 4, and the granule box 5 on the device frame 1, with a compact structure, small floor area, and is convenient for installation and maintenance. At the same time, the centralized control design of the control box 9 makes the operation simpler and easier to understand, reducing the operation difficulty. In addition, the design of the liquid medicine mixing and replenishment mechanism and the powder medicine replenishment mechanism makes the liquid medicine proportioning process faster and more efficient, further enhancing the practicality and convenience of the device.

[0044] In a further preferred embodiment of the present invention, an exhaust pipe 12 is fixedly installed at the top of the replenishment tank 4 for discharging the excess air in the replenishment tank 4.

[0045] In this embodiment, to ensure the smooth progress of the liquid medicine proportioning process in the replenishment tank 4 and the stable operation of the system, an exhaust pipe 12 is added to the top of the replenishment tank 4. During specific operation, when the liquid medicine mixing and replenishment mechanism and the powder medicine replenishment mechanism work together to mix the granular medicine with water to form a new liquid medicine and inject it into the replenishment tank 4, excess air may be generated in the tank due to the injection of the liquid medicine or chemical reaction. At this time, the exhaust pipe 12 plays an exhaust function, timely discharging the excess air in the replenishment tank 4 to prevent air accumulation from affecting the liquid medicine proportioning accuracy and subsequent liquid medicine transportation.

[0046] In a further preferred embodiment of the present invention, the liquid medicine mixing and replenishing mechanism includes a mixing and replenishing pipe 13, a mixing box 14, a water replenishing pipe 15 and a powder supply pipe 16. The mixing box 14 is fixedly installed on the top of the replenishing tank 4 for mixing the medicine with water. The mixing and replenishing pipe 13 and the water replenishing pipe 15 are respectively fixedly installed on the corresponding two sides of the mixing box 14 for respectively taking in water and discharging the mixed medicine solution. The discharge end of the mixing and replenishing pipe 13 is fixedly connected to the top of the replenishing tank 4 for replenishing the medicine solution into the replenishing tank 4. The powder supply pipe 16 is fixedly connected to the top of the replenishing tank 4 for replenishing the medicine solution into the replenishing tank 4. The supply pipe 16 is fixedly installed on the top of the mixing box 14. The powder supply pipe 16 uses air to deliver powder. The powder discharge end of the powder supply pipe 16 is obliquely connected to the mixing box 14, and its inclination direction is toward the liquid inlet end of the mixing replenishment pipe 13. It is staggered with the discharge end of the water supply pipe 15 to prevent backflow. The water supply pipe 15 and the powder supply pipe 16 are both provided with solenoid valves, and are connected to the control box 9 for use with the water level sensor 10 and the water level sensor 2 11. The powder inlet end of the powder supply pipe 16 is connected to the powder replenishing mechanism for introducing powder.

[0047] In this embodiment, when the liquid medicine mixing and replenishing mechanism is in operation, when the water level of the replenishing tank 4 drops to a preset low water level due to the output of liquid medicine, the water level sensor 11 senses the water level change and transmits a signal to the control box 9. The control box 9 then starts the solenoid valves on the water replenishing pipe 15 and the powder supply pipe 16, and the water flows into the mixing box 14 through the water replenishing pipe 15. At the same time, the powder replenishing mechanism conveys the powder to the mixing box 14 through the powder supply pipe 16 in an air powder feeding manner. The inclined design of the powder supply pipe 16 ensures that the powder is directly sprayed to the liquid inlet end of the mixing and replenishing pipe 13, preliminarily mixed with the water flow, and avoids backflow interference with the drainage end of the water supply pipe 15. The mixed pharmaceutical solution flows back to the replenishing tank 4 through the mixing and replenishing pipe 13 until the water level returns to the set value, completing the liquid medicine replenishment process.

[0048] The liquid medicine mixing and replenishing mechanism uses air powder delivery technology to efficiently mix the powder with the water flow in the mixing box 14. The inclined setting of the powder supply pipe 16 is staggered with the drainage end of the water supply pipe 15, which effectively prevents the backflow phenomenon. At the same time, the linkage control of the solenoid valves on the water supply pipe 15 and the powder supply pipe 16 and the control box 9 realizes the automation and intelligence of the liquid medicine replenishment process, reduces manual intervention, and reduces the difficulty of operation.

[0049] In a further preferred embodiment of the present invention, the powder replenishing mechanism includes a drainage cylinder 17 and a powder grinding box 18. The drainage cylinder 17 is fixedly installed at the powder inlet end of the powder supply pipe 16 for supplying powder. The powder grinding box 18 is fixedly installed at the bottom of the particle box 5 for receiving the particles discharged from the particle box 5 and grinding the pharmaceutical particles into powder. A powder suction pipe 19 is fixedly installed between the bottom of the powder grinding box 18 and the drainage cylinder 17 for draining the powder to the powder supply pipe 16. A fan shaft 20 is rotatably installed on the drainage cylinder 17, and a fan blade 21 is fixedly installed on the fan shaft 20. The fan blade 21 is located inside the drainage cylinder 17 for draining the powder when the fan shaft 20 rotates.

[0050] In this embodiment, when the powder replenishing mechanism operates, the granular pharmaceutical in the particle box 5 is first discharged into the powder grinding box 18, and the powder grinding box 18 grinds the granular pharmaceutical into fine powder through an internal grinding mechanism. Subsequently, the powder is sucked into the drainage cylinder 17 through the powder suction pipe 19, and the fan blade 21 inside the drainage cylinder 17 rotates driven by the fan shaft 20, generating an air flow to push the powder into the powder supply pipe 16. The powder supply pipe 16 uses an air powder delivery method to transport the powder to the mixing box 14, where it is mixed with water flow and then supplemented into the supplement tank 4 through the mixing and supplement pipe 13. The entire process is automatically controlled by the control box 9 according to the signals of the water level sensor 1 10 and the water level sensor 2 11 to ensure the stable supply of powder and the accurate proportioning of the liquid medicine.

[0051] The powder replenishing mechanism efficiently grinds the granular pharmaceutical into fine powder through the powder grinding box 18. At the same time, the design of the drainage cylinder 17 and the fan blade 21 utilizes the air flow principle to achieve the rapid and stable transportation of the powder, avoiding the problems of blockage and waste that may occur in traditional transportation methods.

[0052] The linkage control between the powder replenishing mechanism and the control box 9 realizes the full automation process of powder preparation, transportation, and liquid medicine proportioning. When the water level in the supplement tank 4 drops, the water level sensor 2 11 automatically triggers the control box 9 to start the powder replenishing mechanism to ensure the timely supply of powder. At the same time, the close cooperation between the powder grinding box 18 and the drainage cylinder 17, as well as the stable rotation of the fan blade 21, enhances the stability and reliability of the system. This design not only reduces manual intervention and operation difficulty but also improves the overall operation efficiency and safety of the system.

[0053] In a further preferred embodiment of the present invention, a blanking shaft 22 is rotatably installed at the discharge port of the particle box 5. An impeller shaft 23 is fixedly sleeved on the blanking shaft 22 and is located inside the discharge port of the particle box 5. When rotating, it is used to evenly discharge the pharmaceutical particles in the particle box 5 into the grinding box 18. A motor 24 is fixedly installed on the side of the particle box 5. The output shaft of the motor 24 is fixedly connected to one end of the blanking shaft 22, which is used to control the rotation of the blanking shaft 22 and the impeller shaft 23. The motor 24 is connected to the control box 9 and is used in cooperation with the solenoid valve, water level sensor 1 10 and water level sensor 2 11.

[0054] In this embodiment, the blanking process of the pharmaceutical particles in the particle box 5 is realized by the drive of the motor 24. When the control box 9 determines that the powder needs to be replenished according to the signals of the water level sensor 1 10 and the water level sensor 2 11, the motor 24 is started. The output shaft of the motor 24 drives the blanking shaft 22 to rotate. The impeller shaft 23 on the blanking shaft 22 rotates accordingly, and evenly discharges the pharmaceutical particles in the particle box 5 into the grinding box 18. After receiving the particles, the grinding box 18 grinds them, converts the granular medicine into fine powder, and then transports it to the powder supply pipe 16 through the powder suction pipe 19 and the drainage cylinder 17. Finally, it is mixed with water flow and replenished into the replenishment tank 4.

[0055] By driving the rotation of the blanking shaft 22 and the impeller shaft 23 by the motor 24, the particle box 5 in this embodiment can realize the even blanking of pharmaceutical particles. The design of the impeller shaft 23 ensures the stability and uniformity of the particles during the blanking process, avoiding the problems of blockage and uneven blanking that may occur in the traditional blanking method. This even blanking method not only improves the preparation efficiency of the powder, but also ensures the accuracy of the liquid medicine ratio, thus optimizing the tap water treatment effect.

[0056] In a further preferred embodiment of the present invention, water guiding ports 25 are respectively opened on both sides of the mixing box 14 corresponding to each other. The two water guiding ports 25 are on the same horizontal plane and respectively correspond to the liquid inlet end of the mixing and replenishing pipe 13 and the drainage end of the water replenishing pipe 15, which are used to guide the flow of the solution, so as to reduce the backflow to the powder inlet 26. The powder inlet 26 is opened at the top of the mixing box 14 and is correspondingly arranged with the powder discharging end of the powder supply pipe 16. The inner wall between the powder supply pipe 16 and the water guiding port 25 corresponding to the water replenishing pipe 15 is in a "V" shape, which is used to avoid the direct impact of water.

[0057] In this embodiment, during the process of liquid medicine mixing and replenishment, water flows into the mixing box 14 through the replenishment water pipe 15, and is guided by the water guiding port 25 corresponding to the drainage end of the replenishment water pipe 15, and flows along the "V" - shaped structure on the inner wall of the mixing box 14 to avoid directly impacting the powder inlet 26. Meanwhile, the medicine powder enters the mixing box 14 obliquely through the medicine powder supply pipe 16 via the powder inlet 26, and its oblique direction is towards the liquid inlet end of the mixing and replenishment pipe 13, forming a preliminary mixture with the water flow. The mixed medicament solution flows out through the water guiding port 25 corresponding to the liquid inlet end of the mixing and replenishment pipe 13, enters the mixing and replenishment pipe 13 and is finally replenished into the replenishment tank 4. During the whole process, the design of the water guiding port 25 effectively reduces the back - flow effect of the water flow on the powder inlet 26, ensuring the full mixing of the medicine powder and water.

[0058] The opening of the water guiding ports 25 on both sides of the mixing box 14 and the oblique setting of the powder inlet 26 and the medicine powder supply pipe 16 enable the medicine powder and water to form an effective convective mixing within the mixing box 14. The water guiding port 25 guides the water flow to flow smoothly, avoiding direct flushing of the medicine powder, and the oblique entry of the medicine powder promotes sufficient contact and mixing with the water flow. This design optimizes the mixing effect, improves the quality of the liquid medicine, and ensures the accuracy and effectiveness of the medicament addition during the tap water treatment process. The design of the water guiding port 25 and the "V" - shaped inner wall structure effectively reduces the back - flow effect of the water flow on the powder inlet 26.

[0059] In a further preferred embodiment of the present invention, the replenishment water pipe 15 is covered with a heat - insulating sleeve 27, and an electric heating coil 28 is provided outside the replenishment water pipe 15 and located within the heat - insulating sleeve 27 for heating the water flowing into the replenishment water pipe 15, thereby improving the mixing effect of the medicament. The electric heating coil 28 is connected to the control box 9 and is used in cooperation with the solenoid valve, the water level sensor 1 10, and the water level sensor 2 11.

[0060] In this embodiment, during the operation of the tap water treatment chemical adding device, when the control box 9 determines that the medicament solution needs to be replenished according to the signals of the water level sensor 1 10 and the water level sensor 2 11, the solenoid valve on the replenishment water pipe 15 is activated, causing the water flow to flow through the replenishment water pipe 15 into the mixing box 14. At the same time, the control box 9 controls the electric heating coil 28 to be energized for heating, and the heat generated by the electric heating coil 28 is effectively conducted to the water flow in the replenishment water pipe 15 through the heat - insulating sleeve 27 to pre - heat the water flow. The pre - heated water flow is mixed with the medicine powder entering the mixing box 14 through the medicine powder supply pipe 16, improving the dissolution speed and mixing effect of the medicament. The mixed medicament solution is replenished into the replenishment tank 4 through the mixing and replenishment pipe 13 to meet the requirements of tap water treatment.

[0061] The design of the heat insulation sleeve 27 wrapped around the water supply pipe 15 and the built-in electric heating coil 28 enables the water flow entering the mixing box 14 to be effectively preheated. When the preheated water flow is mixed with the medicinal powder, due to the increase in temperature, the dissolution rate of the medicinal agent accelerates, and the mixing effect is significantly improved.

[0062] In a further preferred embodiment of the present invention, two crushing shafts 29 are rotatably installed in the grinding box 18. Crushing rollers 30 are fixedly sleeved on both of the two crushing shafts 29. The two crushing rollers 30 are engaged with each other to grind the medicinal agent particles entering the grinding box 18. Synchronous gears 31 are fixedly installed at the same end of the two crushing shafts 29. The two synchronous gears 31 are engaged with each other to control the relative rotation of the two crushing shafts 29 and the crushing rollers 30, thereby realizing the grinding of the medicinal agent particles. A sprocket one 32 is fixedly installed at the same end of one of the crushing shafts 29 and the feeding shaft 22. The same chain one 33 is sleeved on the two sprockets one 32 to realize the synchronous rotation of the two crushing shafts 29 and the feeding shaft 22 driven by the motor 24.

[0063] In this embodiment, the grinding process of the granular medicinal agent is realized by synchronous linkage driven by the motor 24. When the control box 9 starts the medicinal powder supplement process according to the water level signal, the motor 24 drives the feeding shaft 22 to rotate. Through the transmission of the sprocket one 32 and the chain one 33, the two crushing shafts 29 in the grinding box 18 are synchronously driven to rotate. The synchronous gears 31 on the two crushing shafts 29 are engaged with each other to ensure that the two crushing shafts 29 drive the crushing rollers 30 to rotate relatively, and the medicinal agent particles entering the grinding box 18 are efficiently ground. The ground medicinal powder is transported to the mixing box 14 through the powder suction pipe 19, and after being mixed with the water flow, it is supplemented into the supplement tank 4.

[0064] In a further preferred embodiment of the present invention, the tops of the liquid storage tank 3 and the particle box 5 both have supplement ports, and covers are arranged at their positions.

[0065] In this embodiment, both the liquid storage tank 3 and the particle box 5 are designed with supplement ports for the supplement operation of the medicinal agent. Specifically, when the liquid medicinal agent in the liquid storage tank 3 or the granular medicinal agent in the particle box 5 needs to be supplemented, the operator can open the cover at the corresponding supplement port and pour the required medicinal agent into the supplement port to complete the supplement of the medicinal agent.

[0066] In a further preferred embodiment of the present invention, the fan shaft 20 rotates synchronously with the crushing shaft 29, and the rotation speed of the fan shaft 20 is 6 - 20 times that of the crushing shaft 29.

[0067] In this embodiment, through the transmission design, the rotation speed of the fan shaft 20 is 6 - 20 times that of the crushing shaft 29, ensuring the continuity and stability of the powder transportation.

[0068] To further improve the usage effect of the present device, in addition to the above solution, the present solution also has the following embodiments:

[0069] In another embodiment of the present invention, two cleaning shafts 34 are rotatably installed in the grinding box 18. The two cleaning shafts 34 are respectively located below the two crushing rollers 30. Brush rollers 35 located in the grinding box 18 are fixedly sleeved on the two cleaning shafts 34. The brushes of the two brush rollers 35 are respectively in contact with the bottoms of the two crushing rollers 30, for cleaning the residual medicinal powder on the corresponding crushing roller 30, reducing errors. At the same end of the two crushing shafts 29 and the cleaning shafts 34, a first pulley 36 is fixedly installed. The same synchronous belt 37 is sleeved on the two first pulleys 36 on the corresponding crushing shaft 29 and cleaning shaft 34, for realizing the synchronous rotation of the crushing shaft 29 and the cleaning shaft 34.

[0070] In this embodiment, a cleaning shaft 34 and a brush roller 35 structure are added in the grinding box 18, and synchronous linkage is realized through a transmission system. When the motor 24 drives the crushing shaft 29 to rotate, the first pulleys 36 at the ends of the crushing shaft 29 and the cleaning shaft 34 are in transmission connection through the synchronous belt 37, so that the cleaning shaft 34 and the crushing shaft 29 rotate synchronously. At this time, the brush roller 35 rotates with the cleaning shaft 34, and its brush continuously cleans the residual medicinal powder at the bottom of the corresponding crushing roller 30. The cleaned medicinal powder directly falls to the bottom of the grinding box 18 and is conveyed to the mixing box 14 through the powder suction pipe 19, realizing the recycling of the residual medicinal powder.

[0071] The continuous cleaning of the brush roller 35 effectively avoids the measurement error caused by the residual medicinal powder at the bottom of the crushing roller 30, ensuring that the actual output of each batch of medicinal powder is consistent with the theoretical design value. The recycling of the residual medicinal powder reduces the waste of medicaments and lowers the operation cost. At the same time, the introduction of the cleaning structure eliminates the potential impact of the residual medicinal powder on the quality of the subsequent batches of medicinal powder, improving the overall stability and reliability of the system.

[0072] In another embodiment of the present invention, a belt disc 38 is fixedly installed at one end of one of the cleaning shafts 34. A second pulley 39 is fixedly sleeved on the fan shaft 20. The same synchronous belt 40 is sleeved on the belt disc 38 and the second pulley 39, so that the cleaning shaft 34 drives the fan shaft 20 to rotate synchronously, realizing the synchronous cleaning of the crushing roller 30 and powder discharging.

[0073] In this embodiment, when the motor 24 drives the crushing shaft 29 to rotate, the cleaning shaft 34 rotates synchronously with the crushing shaft 29 through the first synchronous belt 37, and the brush roller 35 thereon continuously sweeps the residual medicine powder at the bottom of the crushing roller 30. Meanwhile, the pulley 38 at the end of the cleaning shaft 34 is connected to the second pulley 39 on the fan shaft 20 through the second synchronous belt 40, transmitting power to the fan shaft 20 to drive the fan blades 21 to rotate at high speed, creating a negative pressure in the powder suction pipe 19 to immediately suck the swept medicine powder into the mixing box 14. This design ensures the synchronization of powder cleaning and powder discharging, avoiding the secondary accumulation of residual medicine powder.

[0074] In another embodiment of the present invention, an auger 41 is rotatably installed in the particle box 5, which is used to prevent the granular medicine from caking and dredge the discharge when rotating. The top end of the auger 41 extends outside the particle box 5. A power transmission long shaft 42 rotatably installed on the suspension plate 2 is provided on the side of the particle box 5. Chain wheels II 43 are fixedly installed at the top ends of both the auger 41 and the power transmission long shaft 42, and the same chain II 44 is sleeved on the two chain wheels II 43. A conical tooth disc 45 is fixedly installed at the bottom end of the power transmission long shaft 42, and a driving conical gear 46 is fixedly sleeved on the fan shaft 20. The driving conical gear 46 meshes with the conical tooth disc 45, so that when the fan shaft 20 rotates, it drives the power transmission long shaft 42 and the auger 41 to rotate synchronously. A stabilizing frame 47 rotatably connected to the fan shaft 20 is fixedly installed on the side of the grinding box 18 for stabilizing the fan shaft 20.

[0075] In this embodiment, when the fan shaft 20 rotates, the driving conical gear 46 thereon transmits power to the power transmission long shaft 42 through the conical tooth disc 45. The power transmission long shaft 42 further drives the auger 41 to rotate through the cooperation of the chain wheel II 43 and the chain II 44. The auger 41 continuously rotates in the particle box 5, preventing the granular medicine from caking and dredging the discharge channel, reducing the problems of unsmooth material feeding or metering error caused by medicine caking, and improving the overall operation efficiency of the system. Meanwhile, the stabilizing frame 47 provides support for the fan shaft 20 to ensure the stability of the transmission system.

[0076] In another embodiment of the present invention, a screen 48 is fixedly installed in the grinding box 18 at a position below the brush roller 35 for filtering medicinal powder. A reciprocating screw 49 is rotatably installed in the grinding box 18 between the brush roller 35 and the screen 48. A cleaning brush plate 50 is threadedly driven and sleeved on the reciprocating screw 49. The bottom brush of the cleaning brush plate 50 contacts the top of the screen 48. The length of the cleaning brush plate 50 is equal to the length of the screen 48. The two ends of the cleaning brush plate 50 are respectively in sliding contact with the inner walls on both sides of the grinding box 18. A guide rod 51 that slidably penetrates the cleaning brush plate 50 is fixedly installed in the grinding box 18. The guide rod 51 is arranged parallel to the reciprocating screw 49 for guiding the sliding of the cleaning brush plate 50. A support shaft plate 52 is fixedly installed on the outer side of the grinding box 18. A power transmission short shaft 53 is rotatably installed on the support shaft plate 52. A driven bevel gear 54 is fixedly installed at one end of the reciprocating screw 49 where the reciprocating screw 49 is located on the power transmission short shaft 53. An upper half bevel gear 55 and a lower half bevel gear 56 are fixedly installed on the power transmission short shaft 53. The tooth surfaces of the upper half bevel gear 55 and the lower half bevel gear 56 are completely staggered so that the upper half bevel gear 55 and the lower half bevel gear 56 alternately mesh with the driven bevel gear 54. The rotation trajectory of the upper half bevel gear 55 meshes with the upper half of the driven bevel gear 54. The rotation trajectory of the lower half bevel gear 56 meshes with the lower half of the driven bevel gear 54. At least one of the upper half bevel gear 55 and the lower half bevel gear 56 is always meshed with the driven bevel gear 54 to drive the reciprocating screw 49 to rotate reciprocally. Belt pulleys three 57 are fixedly sleeved on both the power transmission short shaft 53 and the power transmission long shaft 42. The same synchronous belt three 58 is sleeved on the two belt pulleys three 57 so that when the power transmission long shaft 42 rotates, it drives the power transmission short shaft 53 to rotate synchronously.

[0077] In this embodiment, the automatic cleaning of the screen 48 and the fine filtration of the medicinal powder are realized through multi-stage transmission. When the power transmission long shaft 42 rotates, through the cooperation of the belt pulley three 57 and the synchronous belt three 58, the power transmission short shaft 53 is driven to rotate synchronously. The upper half bevel gear 55 and the lower half bevel gear 56 on the power transmission short shaft 53 alternately mesh with the driven bevel gear 54 at the end of the reciprocating screw 49 to drive the reciprocating screw 49 to rotate reciprocally. The reciprocating screw 49 drives the cleaning brush plate 50 to reciprocally slide along the guide rod 51 through threading to clean the medicinal powder on the top of the screen 48 and prevent blockage. At the same time, the screen 48 filters the medicinal powder to ensure the particle uniformity.

[0078] The fixed installation of the screen 48 and the reciprocating movement of the cleaning brush plate 50 are combined to realize the continuous filtration of the medicinal powder and the automatic cleaning of the screen 48. The bottom brush of the cleaning brush plate 50 effectively removes the residual medicinal powder on the top of the screen 48, prevents the screen holes from being blocked, and ensures the filtration efficiency and uniformity of the medicinal powder.

[0079] Through the linkage design of the power transmission long shaft 42 and the power transmission short shaft 53, the goal of driving the synchronous rotation of multiple shafts by a single power source is achieved. The alternating meshing of the upper half bevel gear 55 and the lower half bevel gear 56 on the power transmission short shaft 53 enables the reciprocating screw 49 to perform reciprocating rotation.

[0080] In another embodiment of the present invention, a stirring shaft 59 is rotatably installed in the supplementary tank 4. Stirring rods 60 are fixedly installed on the part of the stirring shaft 59 located inside the supplementary tank 4. Both ends of the stirring shaft 59 are located outside the supplementary tank 4. Sprockets three 61 are fixedly installed on one end of the stirring shaft 59 and the fan shaft 20. The same chain three 62 is sleeved on the two sprockets three 61, so that when the fan shaft 20 rotates, it drives the stirring shaft 59 to rotate synchronously, realizing the mixing and stirring of the powder and the supplied liquid medicine. Mounting shaft frames 63 are fixedly installed on both the device frame 1 and the suspension plate 2. Guide chain shafts 64 for guiding the chain three 62 are rotatably installed on the two mounting shaft frames 63.

[0081] In this embodiment, when the fan shaft 20 rotates, the sprocket three 61 on it drives the stirring shaft 59 to rotate synchronously through the chain three 62. Stirring rods 60 are installed on the part of the stirring shaft 59 located inside the supplementary tank 4, continuously stirring the powder and the liquid medicine to ensure the mixing uniformity. At the same time, the guide chain shafts 64 on the mounting shaft frames 63 provide support and guidance for the chain three 62, preventing the chain from loosening or falling off during the transmission process.

[0082] In another embodiment of the present invention, a support plate 65 for supporting the drainage cylinder 17 is fixedly installed on the device frame 1, and the support plate 65 is fixedly connected to the drainage cylinder 17.

[0083] In this embodiment, the support plate 65 facilitates the installation and support of the drainage cylinder 17.

[0084] In summary, compared with the related technology, the present device realizes the automatic generation of the liquid medicine. The liquid medicine supplement and ratio can be accurately controlled. The automated operation reduces manual intervention, improves work efficiency, and at the same time ensures the stable supply of the liquid medicine without stopping the machine.

[0085] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add, delete or make other adjustments to the features in the embodiments of the present invention according to the circumstances, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A dosing device for tap water treatment, characterized in that: include: A device frame and a suspension plate fixedly mounted on the device frame, a liquid storage tank for storing liquid medicine and a particle box for storing granular medicine are fixedly mounted on the suspension plate, a replenishing tank for temporarily storing replenished liquid medicine is fixedly mounted on the top of the liquid storage tank, a liquid replenishing pipe is installed between the top of the liquid storage tank and the bottom of the replenishing tank, and a solenoid valve is installed on the liquid replenishing pipe for controlling the replenishment of liquid medicine; A liquid pump is fixedly installed on the device frame, a liquid discharge pipe is fixedly installed on the liquid inlet end of the liquid pump, the liquid inlet end of the discharge pipe is fixedly connected to the bottom of the liquid storage tank, and the liquid discharge end of the liquid pump is used to connect to the tap water circulation pipe; A control box is fixedly installed on the device frame, which is used to control the liquid pump and the solenoid valve; A water level sensor 1 is fixedly mounted on the liquid storage tank, and the sensing end of the water level sensor 1 is located in the liquid storage tank, and is used to sense the liquid level depth in the liquid storage tank, thereby transmitting a signal to the control box to control the opening and closing of the solenoid valve; A water level sensor 2 is fixedly installed on the replenishing tank. The sensing end of the water level sensor 2 is located in the replenishing tank and is used to sense the liquid level depth in the replenishing tank, thereby transmitting a signal to the control box to control the operation of the medicine liquid mixing replenishing mechanism and the medicine powder replenishing mechanism. The medicine liquid mixing replenishing mechanism and the medicine powder replenishing mechanism are installed between the replenishing tank and the particle box and are used to replenish the generated medicine liquid into the replenishing tank.

2. The dosing device for tap water treatment according to claim 1, characterized in that: An exhaust pipe is fixedly installed on the top of the supplementary tank to exhaust the excess air in the supplementary tank.

3. The dosing device for tap water treatment according to claim 1, characterized in that: The medicine liquid mixing and replenishing mechanism comprises a mixing and replenishing pipe, a mixing box, a water replenishing pipe and a medicine powder replenishing pipe. The mixing box is fixedly installed on the top of the replenishing tank and is used to mix the medicine with water. The mixing and replenishing pipe and the water replenishing pipe are respectively fixedly installed on the corresponding two sides of the mixing box and are respectively used to take in water and discharge the mixed medicine solution. The liquid discharge end of the mixing and replenishing pipe is fixedly connected to the top of the replenishing tank and is used to replenish the medicine solution into the replenishing tank. The medicine powder replenishing pipe is fixedly installed on the top of the mixing box. The powder discharge end of the medicine powder replenishing pipe is obliquely connected to the mixing box, and its inclination direction is toward the liquid inlet end of the mixing and replenishing pipe. It is staggered with the water discharge end of the water replenishing pipe to prevent backflow. The water replenishing pipe and the medicine powder replenishing pipe are both provided with solenoid valves, and are connected to the control box for use in conjunction with water level sensor 1 and water level sensor 2. The powder inlet end of the medicine powder supply pipe is connected to the medicine powder replenishing mechanism for introducing medicine powder.

4. The dosing device for tap water treatment according to claim 3, characterized in that: The powder replenishing mechanism includes a drainage tube and a grinding box. The drainage tube is fixedly installed at the powder inlet end of the powder supply pipe for supplying powder. The grinding box is fixedly installed at the bottom of the particle box for receiving particles discharged from the particle box and grinding the medicine particles into powder. A powder suction pipe is fixedly installed between the bottom of the grinding box and the drainage tube for draining the powder to the powder supply pipe. A fan shaft is rotatably installed on the drainage tube, and fan blades are fixedly installed on the fan shaft. The fan blades are located in the drainage tube and are used for draining the powder when the fan shaft rotates.

5. The dosing device for tap water treatment according to claim 4, characterized in that: A discharge shaft is rotatably installed at the discharge port of the particle box, and an impeller shaft located in the discharge port of the particle box is fixedly sleeved on the discharge shaft. When rotating, it is used to evenly discharge the pharmaceutical particles in the particle box into the grinding box. A motor is fixedly installed on the side of the particle box, and the output shaft of the motor is fixedly connected to one end of the discharge shaft for controlling the rotation of the discharge shaft and the impeller shaft. The motor is connected to a control box for use with an electromagnetic valve, water level sensor 1 and water level sensor 2.

6. The dosing device for tap water treatment according to claim 3, characterized in that: Water guide ports are provided on the corresponding sides of the mixing box. The two water guide ports are located on the same horizontal plane and correspond to the liquid inlet end of the mixing replenishment pipe and the drainage end of the water replenishment pipe respectively, so as to guide the flow of the solution, thereby reducing the backflow to the powder inlet. The powder inlet is provided at the top of the mixing box and corresponds to the powder discharge end of the powder replenishment pipe. The inner wall between the powder replenishment pipe and the water guide port corresponding to the water replenishment pipe is in a "V" shape structure, so as to avoid direct water rush.

7. The dosing device for tap water treatment according to claim 3, characterized in that: The water supply pipe is covered with an insulation sleeve, and an electric heating coil is provided on the outer sleeve of the water supply pipe for heating the water flowing into the water supply pipe, thereby improving the mixing effect of the medicine. The electric heating coil is connected to the control box and is used in conjunction with the solenoid valve, water level sensor 1 and water level sensor 2.

8. The dosing device for tap water treatment according to claim 5, characterized in that: Two crushing shafts are rotatably installed in the grinding box, and crushing rollers are fixedly sleeved on the two crushing shafts. The two crushing rollers are meshed with each other and are used to grind the pharmaceutical particles entering the grinding box. A synchronous gear is fixedly installed on the same end of the two crushing shafts, and the two synchronous gears are meshed with each other to control the relative rotation of the two crushing shafts and the crushing rollers, thereby achieving the grinding of the pharmaceutical particles. A sprocket 1 is fixedly installed on the same end of one of the crushing shafts and the discharge shaft, and the same chain 1 is sleeved on the two sprockets 1, which is used to achieve the synchronous rotation of the two crushing shafts and the discharge shaft driven by the motor.

9. The dosing device for tap water treatment according to claim 1, characterized in that: The tops of the liquid storage tank and the particle box are both provided with replenishing ports, and sealing covers are arranged at the positions thereof.

10. The dosing device for tap water treatment according to claim 8, characterized in that: The fan shaft rotates synchronously with the crushing shaft, and the rotation speed of the fan shaft is 6-20 times that of the crushing shaft.

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