Dry-mixed mortar anti-blocking stirring device with cleaning and wall scraping mechanism and method

Abstract

The invention discloses a dry-mixed mortar anti-blocking stirring device with a cleaning and wall scraping mechanism and a method, and relates to the technical field of dry-mixed mortar production.The dry-mixed mortar anti-blocking stirring device comprises a stirring tank, a first stirring rod and a second stirring rod, the first stirring rod is installed on the upper side of the inner wall of the stirring tank, and the second stirring rod is installed on the lower side of the outer wall of the first stirring rod; the first stirring rod and the second stirring rod are connected with the stirring tank through a first rotating shaft, a first scraping plate is installed on the upper side of the inner wall of the first stirring rod, a first telescopic shaft is installed at the joint of the first scraping plate and the stirring tank, and a second rotating shaft is installed at the joint of the first scraping plate and the first telescopic shaft; second telescopic shafts are installed on the outer walls of the connecting positions of the first stirring rod and the first rotating shaft and the connecting positions of the second stirring rod and the first rotating shaft, second scraping plates are installed on the sides, away from the first rotating shaft, of the outer walls of the second telescopic shafts, and baffles are arranged on the sides, away from the second telescopic shafts, of the outer walls of the second scraping plates. By installing the first scraping plate and the second scraping plate, the function of completely cleaning residual mortar is achieved, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This invention relates to the field of dry-mixed mortar production technology, specifically to a dry-mixed mortar anti-clogging mixing device and method with a cleaning and scraping mechanism. Background Technology

[0002] Dry-mixed mortar is physically mixed from aggregates, inorganic cementitious materials and additives. Its sticky properties make it easy to clump or stick to the inner wall of the equipment when it is discharged. Especially during the unloading stage, the mortar is prone to clogging the discharge port due to its poor fluidity. During the mixing process, some mortar may enter the feed nozzle and, after solidification, hinder subsequent feeding. Early anti-clogging devices had only one function.

[0003] The cement and additives in dry-mixed mortar tend to adhere to the tank wall, accumulating over time to form hard lumps. This not only reduces the effective volume but also corrodes the metal layer of the tank, significantly shortening the equipment's lifespan. Traditional scrapers, due to their rigid structure, cannot fully conform to the curved surface of the tank wall, resulting in the accumulation of residual material at corners and welds, requiring regular manual cleaning and affecting continuous production.

[0004] Patent CN120606453B discloses a continuous and efficient automatic slurry preparation equipment for dry-mixed mortar. The patent reduces the relative movement space of coarse sand and increases internal friction, reduces the stratification phenomenon that occurs during bagging and transportation after slurry preparation, reduces the mixing time of mortar and water in the later stage, and improves construction efficiency.

[0005] The aforementioned patent separates dried sand into a sand particle screen via a screw conveyor, using only coarse and fine sand. Under the action of the first and second uniform material components, the mortar on the first conveyor belt consists of coarse sand, fine sand, cement, and filler laid out in sequence. Since the fine sand can fill the gaps in the coarse sand, it reduces the relative movement space of the coarse sand and increases the internal friction, allowing the cement and filler to be positioned on top of the coarse and fine sand. The dry-mixed mortar is stacked in the packaging bag according to the above-mentioned layered structure through the anti-segregation telescopic tube, reducing the stratification phenomenon that occurs during bagging and transportation after the mortar is prepared. It also reduces the mixing time of the mortar and water in the later stage and has room for optimization in cleaning residual mortar.

[0006] Therefore, this application proposes a dry-mixed mortar anti-clogging mixing device and method with a cleaning and scraping mechanism for completely cleaning residual mortar. Summary of the Invention

[0007] The purpose of this invention is to provide a dry-mixed mortar anti-clogging mixing device and method with a cleaning and scraping mechanism to solve the technical problems of dry-mixed mortar adhesion, incomplete cleaning and tank wall damage mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a dry-mixed mortar anti-clogging mixing device with a cleaning scraping mechanism, comprising a mixing tank, a first mixing rod, and a second mixing rod. The first mixing rod is installed on the upper side of the inner wall of the mixing tank, and the second mixing rod is installed on the lower side of the outer wall of the first mixing rod. Both the first and second mixing rods are connected to the mixing tank via a first rotating shaft. A first scraper is installed on the upper side of the inner wall of the first mixing rod. A first telescopic shaft is installed at the connection between the first scraper and the mixing tank. A second rotating shaft is installed at the connection between the first scraper and the first telescopic shaft. The second telescopic shaft is installed on the outer wall of both the first and second mixing rods at the connection with the first rotating shaft. A second scraper is installed on the outer wall of the second telescopic shaft away from the first rotating shaft. A baffle is provided on the outer wall of the second scraper away from the second telescopic shaft. The first telescopic shaft, the second rotating shaft, the second telescopic shaft, and the baffle are respectively connected to a switch at the output end of a cleaning motor installed on the upper side of the outer wall of the mixing tank via connecting rods. The cleaning motor is connected to a controller installed on the front side of the outer wall of the mixing tank via a signal line.

[0009] Preferably, the scraper consists of a hard plate, a soft plate, and a push rod. A hard plate is installed on the lower side of the outer wall of the telescopic shaft, and a soft plate is installed on the side of the outer wall of the hard plate near the inner wall of the mixing tank. The soft plate is connected to the telescopic shaft via the push rod, and the push rod is connected to the switch at the output end of the cleaning motor via a connecting rod.

[0010] Preferably, a discharge port is installed on the lower side of the inner wall of the mixing tank, and an opening and closing valve is installed at the connection between the discharge port and the mixing tank. An infrared sensor is embedded on the lower side of the outer wall of the rotating shaft, and a telescopic shaft is installed at the connection between the rotating shaft and the mixing tank. The telescopic shaft is connected to a switch at the output end of the mixing motor installed on the rear side of the outer wall of the cleaning motor via a connecting rod. The opening and closing valve, the infrared sensor, and the mixing motor are respectively connected to the controller via signal lines.

[0011] Preferably, a vent is provided on the upper side of the inner wall of the mixing tank. The vent is connected to a dust removal unit installed on the rear side of the outer wall of the mixing tank through a connecting pipe. A humidity sensor is installed on the upper side of the inner wall of the mixing tank. A dust concentration sensor is installed on the rear side of the outer wall of the humidity sensor. The humidity sensor and the dust concentration sensor are respectively connected to the dust removal unit through signal lines. The dust removal unit consists of a collection box, a fan, a dust removal motor, and an air exchange pipe.

[0012] A collection box is installed on the rear side of the outer wall of the mixing tank. A fan is installed on the upper side of the inner wall of the collection box. The fan is connected to the dust removal motor installed on the upper side of the inner wall of the collection box via a connecting rod. The collection box is connected to the vent via an air exchange pipe. An air valve is installed at the connection between the air exchange pipe and the vent. The dust concentration sensor, humidity sensor, dust removal motor and air valve are connected to the controller via signal lines.

[0013] Preferably, a recovery valve is installed through the lower inner wall of the collection box. The recovery valve is connected to the recovery tank installed on the lower outer wall of the mixing tank via a connecting pipe. A distributing valve is installed on the lower outer wall of the discharge port. The distributing valve is connected to the recovery tank via a connecting pipe. A crushing unit is installed in the middle of the inner wall of the recovery tank. The crushing unit is connected to a switch at the output end of the recovery motor installed on the rear outer wall of the recovery tank via a connecting rod. The recovery valve, distributing valve, crushing unit, and recovery motor are respectively connected to the controller via signal lines.

[0014] Preferably, a clutch is installed at the connection point between the rotating shaft one and the stirring rod one and the stirring rod two, and the rotating shaft one and the clutch are respectively connected to the switch at the output end of the stirring motor through a connecting rod.

[0015] Preferably, a water tank is installed on the upper side of the outer wall of the dust removal unit, and a pressure booster is installed on the lower side of the outer wall of the water tank. The input end of the pressure booster is connected to the water tank through a water valve, and the output end of the pressure booster is connected to the air exchange pipe through a connecting pipe. The pressure booster is connected to the switch at the output end of the dust removal motor through a connecting rod, and the water valve is connected to the humidity sensor through a signal line.

[0016] Preferably, a second discharge port is installed through the lower side of the inner wall of the recycling tank. The second discharge port is connected to an extraction box installed on the rear side of the outer wall of the recycling tank via a connecting pipe. An extraction pump is installed inside the extraction box. An inlet is installed on the upper side of the outer wall of the mixing tank. A storage box is installed on the rear side of the outer wall of the collection box. The extraction box is connected to the inlet and the storage box via connecting pipes. The extraction pump is connected to the switch at the output end of the recycling motor via a connecting rod. The extraction pump is connected to the controller via a signal line.

[0017] Preferably, the stirring method is as follows:

[0018] S1: The staff connects the storage box for storing materials to the extraction box, inputs the dry mortar formula through the controller, and the extraction box extracts the materials from the storage box and sends them into the mixing tank;

[0019] S2: The controller controls the stirring motor to drive the rotating shaft one to rotate, so that stirring rod one and stirring rod two rotate in opposite directions to mix the materials;

[0020] S3: After mixing is complete, the controller opens the discharge port to discharge the mixed dry mortar.

[0021] S4: The controller controls the cleaning motor to sequentially drive scraper one and scraper two to clean the mixing tank, mixing rod one and mixing rod two.

[0022] S5: The controller opens the discharge port and connects the distribution valve and the recovery tank to send the residual mortar into the recovery tank.

[0023] Preferably, S4 specifically includes:

[0024] S41: The controller controls the switch connected to the push rod at the output of the cleaning motor. Driven by the cleaning motor, the push rod pushes the soft plate so that when scraper 1 contacts the inner wall of the mixing tank, both the hard plate and the soft plate are in contact with the inner wall of the mixing tank.

[0025] S42: The cleaning motor is connected to the telescopic shaft one through the switch. Driven by the telescopic shaft one, the scraper one cleans the inner wall of the mixing tank.

[0026] S43: The controller controls the cleaning motor to connect to the baffle and the second telescopic shaft in sequence. The baffle opens under the drive of the cleaning motor, and the second telescopic shaft pushes the second scraper to clean the first and second stirring rods. After cleaning is completed, the second telescopic shaft drives the second scraper to retract, and the baffle seals the second scraper.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. This invention, by installing scraper one and scraper two, achieves the function of completely cleaning residual mortar, solves the problems of relying on manual cleaning, incomplete cleaning and dust erosion, can thoroughly remove residual materials, improves the adhesion between the cleaning scraper and the tank wall, extends the service life of the equipment, and reduces the energy consumption of the equipment.

[0029] 2. This invention, by installing a stirring rod one, a stirring rod two, a telescopic shaft three, and an infrared sensor, achieves the function of maintaining mortar flow, solves the problems of material collision damaging the equipment, uneven material mixing, and material blockage, ensures uniform material mixing, avoids excessive material residue increasing cleaning pressure, and improves the production efficiency of the equipment;

[0030] 3. This invention, through the installation of a dust concentration sensor, a dust removal unit, and a water tank, achieves rapid dust removal, solving the problems of dust accumulation damaging equipment, delayed dust removal response, and complex dust post-processing. It can prevent dust accumulation, reduce equipment energy consumption, improve the environmental friendliness of the equipment, and extend the service life of the equipment.

[0031] 4. This invention, through the installation of a collection box, a recycling tank, and an extraction box, achieves the function of zero material waste, solves the problems of material waste, risk of particle separation, and low cleaning efficiency, and enables the secondary use of residual mortar and dust, reducing resource waste and improving the economic efficiency of the equipment. Attached Figure Description

[0032] Figure 1 This is a front view structural diagram of the present invention;

[0033] Figure 2 This is a schematic diagram of the mixing tank structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the scraper structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the scraper structure of the present invention;

[0036] Figure 5 This is a schematic diagram of the collection box, water tank, and booster pump of the present invention;

[0037] Figure 6 This is a schematic diagram of the recycling tank structure of the present invention;

[0038] Figure 7 This is a schematic diagram of the connection structure between the storage box, the recycling tank, and the extraction box of the present invention;

[0039] Figure 8 This is a schematic diagram of the connection structure between the extraction box and the inlet of the present invention.

[0040] In the diagram: 1. Mixing tank; 2. Mixing rod one; 3. Mixing rod two; 4. Rotating shaft one; 5. Scraper one; 6. Telescopic shaft one; 7. Rotating shaft two; 8. Telescopic shaft two; 9. Scraper two; 10. Baffle; 11. Cleaning motor; 12. Controller; 13. Hard plate; 14. Soft plate; 15. Push rod; 16. Discharge port one; 17. Opening and closing valve; 18. Infrared sensor; 19. Telescopic shaft three; 20. Mixing motor; 21. Ventilation port; 22. 23. Humidity sensor; 24. Dust concentration sensor; 25. Collection box; 26. Fan; 27. Dust removal motor; 28. Air exchange pipe; 29. ​​Air valve; 30. Recovery valve; 31. Recovery tank; 32. Distributor valve; 33. Crushing unit; 34. Recovery motor; 35. Clutch; 36. Water tank; 37. Pressure booster; 38. Water valve; 39. Discharge port 2; 40. Extraction box; 41. Extraction pump; 42. Inlet; 43. Storage box. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism includes a mixing tank 1, a first mixing rod 2, and a second mixing rod 3. The first mixing rod 2 is installed on the upper inner wall of the mixing tank 1, and the second mixing rod 3 is installed on the lower outer wall of the first mixing rod 2. Both the first mixing rod 2 and the second mixing rod 3 are connected to the mixing tank 1 via a rotating shaft 4. A scraper 5 is installed on the upper inner wall of the first mixing rod 2. A telescopic shaft 6 is installed at the connection between the scraper 5 and the mixing tank 1, and a rotating shaft 7 is installed at the connection between the scraper 5 and the telescopic shaft 6. The outer walls of the connection between the stirring rod 1 2 and the stirring rod 2 3 and the rotating shaft 1 4 are each equipped with a telescopic shaft 2 8. A scraper 2 9 is installed on the outer wall of the telescopic shaft 2 8 away from the rotating shaft 1 4. A baffle 10 is provided on the outer wall of the scraper 2 9 away from the telescopic shaft 2 8. The telescopic shaft 1 6, the rotating shaft 2 7, the telescopic shaft 2 8 and the baffle 10 are respectively connected to the switch at the output end of the cleaning motor 11 installed on the upper side of the outer wall of the mixing tank 1 through connecting rods. The cleaning motor 11 is connected to the controller 12 installed on the front side of the outer wall of the mixing tank 1 through a signal line.

[0045] The scraper 5 is composed of a hard plate 13, a soft plate 14 and a push rod 15. The hard plate 13 is installed on the lower side of the outer wall of the telescopic shaft 6. The soft plate 14 is installed on the side of the outer wall of the hard plate 13 near the inner wall of the mixing tank 1. The soft plate 14 is connected to the telescopic shaft 6 through the push rod 15. The push rod 15 is connected to the switch at the output end of the cleaning motor 11 through the connecting rod.

[0046] Furthermore, after the material enters the mixing tank 1, completes the mixing, and is discharged from the mixing tank 1, the operator issues an instruction through the controller 12 to clean the inside of the mixing tank 1. This prevents the mixed dry mortar from remaining and hardening inside the mixing tank 1. The controller 12 controls the adapter at the output end of the cleaning motor 11 to connect to the telescopic shaft 6. The scraper 5 moves up and down inside the mixing tank 1 under the drive of the telescopic shaft 6 to clean the material remaining on the inner wall of the mixing tank 1. In the initial stage of use of the mixing tank 1, when the inner wall of the mixing tank 1 is not worn by the material and is in a smooth state, the hard plate 13 contacts the inner wall of the mixing tank 1 to clean the mixing tank 1. The material adhering to the inner wall is scraped off. Since the inner wall of the mixing tank 1 is smooth and wear-free, the hard plate 13 made of high wear-resistant alloy material can completely adhere to the inner wall of the mixing tank 1. At this time, the push rod 15 and the soft plate 14 connected to the push rod 15 are in a retracted state. After the mixing tank 1 has been used for a period of time, the inner wall of the mixing tank 1 becomes worn. At this time, the hard plate 13 can no longer completely adhere to the inner wall of the mixing tank 1. At this time, the controller 12 controls the switch at the output end of the cleaning motor 11 to connect to the push rod 15. Driven by the cleaning motor 11, the push rod 15 pushes the soft plate 14, so that when the scraper 15 adheres to the inner wall of the mixing tank 1, the hard plate 13 and the high resilience wear-resistant material are in contact. The flexible material plate 14 simultaneously adheres to the inner wall of the mixing tank 1, ensuring a seamless fit between the scraper 5 and the inner wall of the mixing tank 1. This prevents the scraper 5 from failing to completely remove adhering materials during cleaning of the inner wall of the mixing tank 1. While the scraper 5 is cleaning the inner wall of the mixing tank 1, the controller 12 controls the switch at the output of the cleaning motor 11 to connect to the rotating shaft 7. Driven by the cleaning motor 11, the rotating shaft 7 adjusts the angle between the scraper 5 and the inner wall of the mixing tank 1, maintaining the angle between the scraper 5 and the inner wall of the mixing tank 1 within the range of 15°-20°. After cleaning the inner wall of the mixing tank 1, the controller 12 controls... The switch at the output of the cleaning motor 11 is connected to the baffle 10 and the telescopic shaft 8 in sequence. Driven by the cleaning motor 11, the baffle 10 opens, and then the telescopic shaft 8 pushes the scraper 9 to scrape off the material remaining on the surface of the stirring rod 2 and the stirring rod 3. After cleaning is completed, the controller 12 controls the cleaning motor 11 to drive the telescopic shaft 8 and the baffle 10 in sequence to retract the scraper 9. That is, the scraper 9 is in a retracted state when not in use and is sealed by the baffle 10 to prevent dust from entering the inner wall of the mixing tank 1 during the cleaning process of the scraper 5 and during the material handling process, which would cause structural wear.

[0047] Example 2: Please refer to Figure 1 and Figure 2A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism includes a mixing tank 1, a first mixing rod 2, and a second mixing rod 3. The first mixing rod 2 is installed on the upper inner wall of the mixing tank 1, and the second mixing rod 3 is installed on the lower outer wall of the first mixing rod 2. Both the first mixing rod 2 and the second mixing rod 3 are connected to the mixing tank 1 via a rotating shaft 4. A scraper 5 is installed on the upper inner wall of the first mixing rod 2. A telescopic shaft 6 is installed at the connection between the scraper 5 and the mixing tank 1, and a rotating shaft 7 is installed at the connection between the scraper 5 and the telescopic shaft 6. The outer walls of the connection between the stirring rod 1 2 and the stirring rod 2 3 and the rotating shaft 1 4 are each equipped with a telescopic shaft 2 8. A scraper 2 9 is installed on the outer wall of the telescopic shaft 2 8 away from the rotating shaft 1 4. A baffle 10 is provided on the outer wall of the scraper 2 9 away from the telescopic shaft 2 8. The telescopic shaft 1 6, the rotating shaft 2 7, the telescopic shaft 2 8 and the baffle 10 are respectively connected to the switch at the output end of the cleaning motor 11 installed on the upper side of the outer wall of the mixing tank 1 through connecting rods. The cleaning motor 11 is connected to the controller 12 installed on the front side of the outer wall of the mixing tank 1 through a signal line.

[0048] A discharge port 16 is installed on the lower side of the inner wall of the mixing tank 1. An opening and closing valve 17 is installed at the connection between the discharge port 16 and the mixing tank 1. An infrared sensor 18 is embedded on the lower side of the outer wall of the rotating shaft 4. A telescopic shaft 3 19 is installed at the connection between the rotating shaft 4 and the mixing tank 1. The telescopic shaft 3 19 is connected to a switch at the output end of the mixing motor 20 installed on the rear side of the outer wall of the cleaning motor 11 via a connecting rod. The opening and closing valve 17, the infrared sensor 18 and the mixing motor 20 are respectively connected to the controller 12 via signal lines.

[0049] Clutches 34 are installed at the connection points of the rotating shaft 4 with the stirring rod 2 and the stirring rod 3. The rotating shaft 4 and the clutches 34 are respectively connected to the switch at the output end of the stirring motor 20 through connecting rods.

[0050] Furthermore, when materials are added to the mixing tank 1, the controller 12 controls the switch at the output end of the mixing motor 20 to connect to the telescopic shaft 19. Driven by the mixing motor 20, the telescopic shaft 19 retracts the mixing rod 2 and the mixing rod 3, raising them to the upper side of the inner wall of the mixing tank 1. This prevents the mixing rods 2 and 3 from being violently impacted and damaged during material addition. As materials are added, the controller 12 controls the mixing motor 20 to drive the telescopic shaft 19 to lower the height of the mixing rods 2 and 3. After the material addition is complete, the controller 12 controls the switch at the output end of the mixing motor 20 to connect to the rotating shaft 4. Driven by the mixing motor 20, the rotating shaft 4 moves the mixing rod 2... The mixing rod 2 and stirring rod 3 rotate to mix the materials. During the mixing process, to ensure thorough mixing, the controller 12 controls the switch at the output of the mixing motor 20 to synchronously connect to the clutch 34. Based on the mixing time, in the initial stage of mixing, to ensure uniform dispersion and thorough mixing, the controller 12 controls the mixing motor 20 to drive the stirring rods 2 and 3 to rotate clockwise in the same direction, forming a stable vortex to accelerate material diffusion and mixing, while also preventing dust. In the middle stage of mixing, the controller 12 controls the clutch 34 connected to the stirring rod 3, causing the clutch 34 to switch from an engaged state to a disengaged state, so that the stirring rods 2 and 3 rotate in opposite directions under the drive of the mixing motor 20. The clockwise rotation of stirring rod 2 generates downward pressure, while the counter-clockwise rotation of stirring rod 3 creates an upward flow. The counter-clockwise rotation of stirring rods 2 and 3 creates a vertical convection circulation, preventing material stratification and uneven mixing. In the later stages of material mixing, the controller 12, through the stirring motor 20, engages the clutch 34 at stirring rod 3, causing it to resume clockwise rotation, rotating in the same direction as stirring rod 2. Furthermore, if localized caking occurs during material mixing, the controller 12 controls the stirring motor 20 to connect the clutches 34 at stirring rods 2 and 3, disengaging both clutches and causing stirring rods 2 and 3 to rotate counter-clockwise under the drive of the stirring motor 20, generating strong turbulence. After the material is mixed, the controller 12 controls the valve 17 to open, and the dry mortar flows out from the discharge port 16. To prevent the dry mortar from clogging in the mixing tank 1, the controller 12 controls the mixing motor 20 to drive the telescopic shaft 19 to adjust the height of the mixing rod 2 and the mixing rod 3. The distance between the rotating shaft 4 and the discharge port 16 is detected by the infrared sensor 18. When clogging occurs, the controller 12 controls the mixing motor 20 to drive the telescopic shaft 19 to lower the height of the mixing rod 2 and the mixing rod 3, so that the mixing rod 3 is closer to the discharge port 16, and the distance between the two is maintained at 5-8cm. The controller also controls the mixing rod 3 to rotate in the opposite direction to the mixing rod 2 to prevent material from accumulating and clogging the discharge port 16.

[0051] Example 3: Please refer to Figure 1and Figure 5 A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism is provided. The mixing tank 1 has a vent 21 on the upper side of its inner wall. The vent 21 is connected to a dust removal unit installed on the rear side of the outer wall of the mixing tank 1 through a connecting pipe. A humidity sensor 22 is installed on the upper side of the inner wall of the mixing tank 1. A dust concentration sensor 23 is installed on the rear side of the outer wall of the humidity sensor 22. The humidity sensor 22 and the dust concentration sensor 23 are respectively connected to the dust removal unit through signal lines. The dust removal unit consists of a collection box 24, a fan 25, a dust removal motor 26, and an air exchange pipe 27.

[0052] A collection box 24 is installed on the rear side of the outer wall of the mixing tank 1. A fan 25 is installed on the upper side of the inner wall of the collection box 24. The fan 25 is connected to the dust removal motor 26 installed on the upper side of the inner wall of the collection box 24 via a connecting rod. The collection box 24 is connected to the vent 21 via an air exchange pipe 27. An air valve 28 is installed at the connection between the air exchange pipe 27 and the vent 21. The dust concentration sensor 23, humidity sensor 22, dust removal motor 26 and air valve 28 are respectively connected to the controller 12 via signal lines.

[0053] A water tank 35 is installed on the upper side of the outer wall of the dust removal unit, and a pressure booster 36 is installed on the lower side of the outer wall of the water tank 35. The input end of the pressure booster 36 is connected to the water tank 35 through a water valve 37, and the output end of the pressure booster 36 is connected to the ventilation pipe 27 through a connecting pipe. The pressure booster 36 is connected to the switch at the output end of the dust removal motor 26 through a connecting rod. The water valve 37 is connected to the humidity sensor 22 through a signal line.

[0054] Furthermore, during the mixing process of materials entering mixing tank 1, since the raw materials of dry-mixed mortar are mainly cement, aggregates, and powders, dust is easily generated during the mixing process. To prevent the internal structure of mixing tank 1 from being aggravated by dust intrusion and to avoid the risk of static electricity, dust concentration sensor 23 is used to detect the dust concentration inside mixing tank 1. When the dust concentration inside mixing tank 1 exceeds 30 mg / m³, the dust concentration is monitored. 3When the dust collector motor 26 is in operation, the controller 12 opens the air valve 28, connecting the mixing tank 1 to the collection box 24 via the ventilation pipe 27. Then, the controller controls the switch at the output of the dust collector motor 26 to connect to the fan 25. The fan 25 generates negative pressure within the ventilation pipe 27, causing the high-dust-content air in the mixing tank 1 to enter the collection box 24 through the ventilation pipe 27. Simultaneously, clean external air is also supplied to the mixing tank 1 through the ventilation pipe 27 to maintain pressure balance within the mixing tank 1. When the high-dust-content air enters the ventilation pipe 27, the controller 12 simultaneously connects the switch at the output of the dust collector motor 26 to the pressurizer 36 and controls the water valve 37 to connect the pressurizer 36 and the water tank 35. Driven by the dust removal motor 26, the pressurizer 36 pressurizes the water in the water tank 35 and sprays it into the ventilation pipe 27 in an atomized state, increasing the humidity of the air with high dust content in the ventilation pipe 27, so that the dust absorbs moisture and accumulates, so that it can be stored in the collection box 24. After the dust concentration sensor 23 detects that the dust concentration in the mixing tank 1 has returned to normal, the controller 12 controls the air valve 28 to disconnect the ventilation pipe 27 from the mixing tank 1, and controls the dust removal motor 26 to disconnect from the fan 25, but still maintains the connection between the dust removal motor 26 and the pressurizer 36, and continuously sprays water mist into the ventilation pipe 27 through the pressurizer 36 to remove the residual dust in the ventilation pipe 27.

[0055] Example 4: Please refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism is provided. The mixing tank 1 has a vent 21 on the upper side of its inner wall. The vent 21 is connected to a dust removal unit installed on the rear side of the outer wall of the mixing tank 1 through a connecting pipe. A humidity sensor 22 is installed on the upper side of the inner wall of the mixing tank 1. A dust concentration sensor 23 is installed on the rear side of the outer wall of the humidity sensor 22. The humidity sensor 22 and the dust concentration sensor 23 are respectively connected to the dust removal unit through signal lines. The dust removal unit consists of a collection box 24, a fan 25, a dust removal motor 26, and an air exchange pipe 27.

[0056] A collection box 24 is installed on the rear side of the outer wall of the mixing tank 1. A fan 25 is installed on the upper side of the inner wall of the collection box 24. The fan 25 is connected to the dust removal motor 26 installed on the upper side of the inner wall of the collection box 24 via a connecting rod. The collection box 24 is connected to the vent 21 via an air exchange pipe 27. An air valve 28 is installed at the connection between the air exchange pipe 27 and the vent 21. The dust concentration sensor 23, humidity sensor 22, dust removal motor 26 and air valve 28 are respectively connected to the controller 12 via signal lines.

[0057] A recovery valve 29 is installed through the lower inner wall of the collection box 24. The recovery valve 29 is connected to the recovery tank 30 installed on the lower outer wall of the mixing tank 1 via a connecting pipe. A distributing valve 31 is installed on the lower outer wall of the discharge port 16. The distributing valve 31 is connected to the recovery tank 30 via a connecting pipe. A crushing unit 32 is installed in the middle of the inner wall of the recovery tank 30. The crushing unit 32 is connected to the switch at the output end of the recovery motor 33 installed on the rear outer wall of the recovery tank 30 via a connecting rod. The recovery valve 29, the distributing valve 31, the crushing unit 32 and the recovery motor 33 are respectively connected to the controller 12 via signal lines.

[0058] The lower inner wall of the recycling tank 30 is provided with a discharge port 38, which is connected to the extraction box 39 installed on the rear outer wall of the recycling tank 30 via a connecting pipe. The extraction box 39 is equipped with an extraction pump 40. The upper outer wall of the mixing tank 1 is provided with an inlet 41, and the rear outer wall of the collection box 24 is provided with a storage box 42. The extraction box 39 is connected to the inlet 41 and the storage box 42 via connecting pipes. The extraction pump 40 is connected to the switch at the output end of the recycling motor 33 via a connecting rod. The extraction pump 40 is connected to the controller 12 via a signal line.

[0059] Furthermore, after cleaning the mixing tank 1, due to the short cleaning and unloading times, the residual dry-mixed mortar that was cleaned off has not yet solidified and can still be directly used in production. The controller 12 controls the distribution valve 31 to switch the connection at the discharge port 16, connecting the discharge end of the discharge port 16 to the recovery tank 30. Subsequently, the controller 12 controls the opening and closing valve 17 to open, allowing the residual mortar cleaned off the mixing tank 1 to enter the recovery tank 30 through the discharge port 16 from the distribution valve 31. The controller 12 controls the recovery motor 33 to drive the crushing unit 32 to crush the residual mortar entering the recovery tank 30. When the residual mortar enters the recovery tank 30 from the distribution valve 31, the controller 12 controls the recovery valve 29 to open, connecting the recovery tank 30 and the collection box 24. The wet dust stored in the collection box 24 is sent into the recovery tank 30 through the connecting pipe. The main component of the wet dust is dry-mixed mortar raw material particles, which can directly mix with the residual mortar. The residual mortar and wet powder entering the recycling tank 30 are crushed and mixed by the crushing unit 32. After the processing is completed, the controller 12 controls the switch at the output end of the recycling motor 33 to connect to the extraction pump 40. Driven by the recycling motor 33, the extraction pump 40 runs and generates suction, which sucks the mixture in the recycling tank 30 from the discharge port 2 38 into the extraction box 39. At the same time, the extraction box 39 sucks in the material to be produced stored in the storage box 42. The material to be produced and the mixture enter the mixing tank 1 together for dry mortar preparation. In order to avoid the imbalance of the raw material ratio of dry mortar, a weight sensor can be added inside the storage box 42 so that the extraction amount of the material to be produced can be controlled when the material is extracted by the extraction box 39. When the set weight is reached, the connection between the extraction box 39 and the storage box 42 is disconnected by adding a valve at the connection between the two to ensure that the raw material ratio for dry mortar preparation in the mixing tank 1 is correct.

[0060] Example 5: Please refer to Figure 1 , Figure 5 , Figure 6 and Figure 7 A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism is provided. The mixing tank 1 has a vent 21 on the upper side of its inner wall. The vent 21 is connected to a dust removal unit installed on the rear side of the outer wall of the mixing tank 1 through a connecting pipe. A humidity sensor 22 is installed on the upper side of the inner wall of the mixing tank 1. A dust concentration sensor 23 is installed on the rear side of the outer wall of the humidity sensor 22. The humidity sensor 22 and the dust concentration sensor 23 are respectively connected to the dust removal unit through signal lines. The dust removal unit consists of a collection box 24, a fan 25, a dust removal motor 26, and an air exchange pipe 27.

[0061] A collection box 24 is installed on the rear side of the outer wall of the mixing tank 1. A fan 25 is installed on the upper side of the inner wall of the collection box 24. The fan 25 is connected to the dust removal motor 26 installed on the upper side of the inner wall of the collection box 24 via a connecting rod. The collection box 24 is connected to the vent 21 via an air exchange pipe 27. An air valve 28 is installed at the connection between the air exchange pipe 27 and the vent 21. The dust concentration sensor 23, humidity sensor 22, dust removal motor 26 and air valve 28 are respectively connected to the controller 12 via signal lines.

[0062] A water tank 35 is installed on the upper side of the outer wall of the dust removal unit, and a pressure booster 36 is installed on the lower side of the outer wall of the water tank 35. The input end of the pressure booster 36 is connected to the water tank 35 through a water valve 37, and the output end of the pressure booster 36 is connected to the ventilation pipe 27 through a connecting pipe. The pressure booster 36 is connected to the switch at the output end of the dust removal motor 26 through a connecting rod. The water valve 37 is connected to the humidity sensor 22 through a signal line.

[0063] The lower inner wall of the recycling tank 30 is provided with a discharge port 38, which is connected to the extraction box 39 installed on the rear outer wall of the recycling tank 30 via a connecting pipe. The extraction box 39 is equipped with an extraction pump 40. The upper outer wall of the mixing tank 1 is provided with an inlet 41, and the rear outer wall of the collection box 24 is provided with a storage box 42. The extraction box 39 is connected to the inlet 41 and the storage box 42 via connecting pipes. The extraction pump 40 is connected to the switch at the output end of the recycling motor 33 via a connecting rod. The extraction pump 40 is connected to the controller 12 via a signal line.

[0064] Furthermore, during the dry-mixed mortar production process, to ensure normal humidity within the mixing tank 1, the humidity sensor 22 collects humidity information from the mixing tank 1 and transmits it to the controller 12. The controller 12 confirms whether the humidity within the mixing tank 1 is normal based on the materials involved in the dry-mixed mortar preparation. When the humidity within the mixing tank 1 exceeds 60%, the controller 12 controls the air valve 28 to connect the ventilation pipe 27 and the mixing tank 1. Driven by the dust removal motor 26, the fan 25 rotates to extract the high-humidity air from the mixing tank 1, and normal-humidity air is then introduced into the mixing tank 1 through the ventilation pipe 27, restoring the humidity within the mixing tank 1 to normal. When the extraction box 39 delivers the mixed materials into the mixing tank 1, since the mixed materials consist of moist dust and residual mortar, they enter the mixing tank 1 along with the materials to be produced. Unlike simply adding materials to be produced, the mixture contains a small amount of moisture, causing fluctuations in humidity within the mixing tank 1. To ensure that moisture does not interfere with the production of dry-mixed mortar, a drying structure can be added to the extraction box 39 to further dry the mixture and materials to be produced extracted into the extraction box 39, thereby avoiding moisture interference with production. During the dry-mixed mortar production process, to prevent the humidity in the mixing tank 1 from being too low, the controller 12 can control the dust removal motor 26 to drive the fan 25 in reverse, and connect the water tank 35 and the pressure booster 36 through the water valve 37 to pressurize and atomize the water and spray it into the ventilation pipe 27. The reverse-rotating fan 25 blows the water mist into the mixing tank 1 from the ventilation port 21 to humidify the mixing tank 1 and maintain the humidity balance within the mixing tank 1.

[0065] Working principle: The operator loads the material into the storage box 42 and inputs the dry mortar mix ratio through the controller 12. The controller 12 extracts the material from the storage box 42 through the extraction box 39. The material enters the mixing tank 1 through the inlet 41. During the material addition process, the controller 12 controls the mixing motor 20 to drive the telescopic shaft 3 19 to adjust the height of the mixing rod 1 2 and the mixing rod 2 3 to avoid structural damage caused by material impact. After the material addition is completed, the controller 12 controls the mixing motor 20 to drive the rotating shaft 1 4 to drive the mixing rod 1 2 and the mixing rod 2 3 to rotate and mix the material.

[0066] During the material mixing process, the dust concentration in the mixing tank 1 is detected by the dust concentration sensor 23. When the dust concentration exceeds the set threshold, the controller 12 controls the air valve 28 to connect the mixing tank 1 and the air exchange pipe 27, and drives the fan 25 through the dust removal motor 26 to generate negative pressure to exchange the external clean air with the air with high dust content in the mixing tank 1. The dust in the high dust content air entering the air exchange pipe 27 comes into contact with the water mist after being pressurized and atomized by the pressurizer 36 and enters the collection box 24.

[0067] After the materials are mixed, the controller 12 controls the opening and closing valve 17 to open, and the dry mortar is discharged from the discharge port 16. At this time, the controller controls the distribution valve 31 to cut off the connection between the discharge port 16 and the recovery tank 30, so that the dry mortar enters the collection bag through the distribution valve 31. During the unloading process, the controller controls the telescopic shaft 319 to adjust the distance between the stirring rod 12 and the stirring rod 23 and the discharge port 16, as well as the rotation direction of the stirring rod 12 and the stirring rod 23, to avoid blockage during the unloading process.

[0068] After unloading is completed, the controller 12 controls the cleaning motor 11 to drive the telescopic shaft 6 to make the scraper 5 clean the inner wall of the mixing tank 1. At the same time, the controller 12 controls the cleaning motor 11 to drive the baffle 10 to open, and drives the scraper 9 through the telescopic shaft 8 to clean the mixing rod 2 and the mixing rod 3. The controller 12 controls the opening and closing valve 17 and the material distribution valve 31 to connect the mixing tank 1 and the recovery tank 30, and sends the cleaned residual mortar into the recovery tank 30. The controller 12 opens the recovery valve 29 to connect the collection box 24 and the recovery tank 30. The dust and residual mortar are mixed and processed by the crushing unit 32. The mixture is then extracted by the extraction box 39 and added to the mixing tank 1 from the feed port 41.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism, characterized in that: The system includes a mixing tank (1), a stirring rod one (2), and a stirring rod two (3). The stirring rod one (2) is installed on the upper side of the inner wall of the mixing tank (1), and the stirring rod two (3) is installed on the lower side of the outer wall of the stirring rod one (2). The stirring rod one (2) and the stirring rod two (3) are both connected to the mixing tank (1) via a rotating shaft one (4). A scraper one (5) is installed on the upper side of the inner wall of the stirring rod one (2). A telescopic shaft one (6) is installed at the connection between the scraper one (5) and the mixing tank (1). A rotating shaft two (7) is installed at the connection between the scraper one (5) and the telescopic shaft one (6). The stirring rod one (2) and the stirring rod two (3) are connected to the mixing tank (1). Telescopic shafts 2 (8) are installed on the outer wall of the connection between the second (3) and the first (4) rotating shaft. A scraper 2 (9) is installed on the outer wall of the second (8) away from the first (4) rotating shaft. A baffle (10) is provided on the outer wall of the second (9) away from the second (8) telescopic shaft. The first (6), the second (7), the second (8) telescopic shaft and the baffle (10) are connected to the switch at the output end of the cleaning motor (11) installed on the upper side of the outer wall of the mixing tank (1) through connecting rods. The cleaning motor (11) is connected to the controller (12) installed on the front side of the outer wall of the mixing tank (1) through signal lines.

2. The dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism according to claim 1, characterized in that: The scraper (5) consists of a hard plate (13), a soft plate (14) and a push rod (15). The hard plate (13) is installed on the lower side of the outer wall of the telescopic shaft (6). The soft plate (14) is installed on the side of the outer wall of the hard plate (13) close to the inner wall of the mixing tank (1). The soft plate (14) is connected to the telescopic shaft (6) through the push rod (15). The push rod (15) is connected to the switch at the output end of the cleaning motor (11) through the connecting rod.

3. The dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism according to claim 1, characterized in that: The mixing tank (1) has a discharge port (16) installed on the lower side of its inner wall. A valve (17) is installed at the connection between the discharge port (16) and the mixing tank (1). An infrared sensor (18) is embedded on the lower side of the outer wall of the rotating shaft (4). A telescopic shaft (19) is installed at the connection between the rotating shaft (4) and the mixing tank (1). The telescopic shaft (19) is connected to the switch at the output end of the mixing motor (20) installed on the rear side of the outer wall of the cleaning motor (11) via a connecting rod. The valve (17), the infrared sensor (18), and the mixing motor (20) are connected to the controller (12) via signal lines.

4. The dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism according to claim 1, characterized in that: The mixing tank (1) has a vent (21) on the upper side of its inner wall. The vent (21) is connected to a dust removal unit installed on the rear side of the outer wall of the mixing tank (1) through a connecting pipe. A humidity sensor (22) is installed on the upper side of the inner wall of the mixing tank (1). A dust concentration sensor (23) is installed on the rear side of the outer wall of the humidity sensor (22). The humidity sensor (22) and the dust concentration sensor (23) are connected to the dust removal unit through signal lines. The dust removal unit consists of a collection box (24), a fan (25), a dust removal motor (26), and an air exchange pipe (27). A collection box (24) is installed on the rear side of the outer wall of the mixing tank (1). A fan (25) is installed on the upper side of the inner wall of the collection box (24). The fan (25) is connected to the dust removal motor (26) installed on the upper side of the inner wall of the collection box (24) through a connecting rod. The collection box (24) is connected to the vent (21) through the air exchange pipe (27). An air valve (28) is installed at the connection between the air exchange pipe (27) and the vent (21). The dust concentration sensor (23), humidity sensor (22), dust removal motor (26) and air valve (28) are connected to the controller (12) through signal lines respectively.

5. A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism according to claim 4, characterized in that: A recovery valve (29) is installed through the lower inner wall of the collection box (24). The recovery valve (29) is connected to the recovery tank (30) installed on the lower outer wall of the mixing tank (1) through a connecting pipe. A material distribution valve (31) is installed on the lower outer wall of the discharge port (16). The material distribution valve (31) is connected to the recovery tank (30) through a connecting pipe. A crushing unit (32) is installed in the middle of the inner wall of the recovery tank (30). The crushing unit (32) is connected to the switch at the output end of the recovery motor (33) installed on the rear outer wall of the recovery tank (30) through a connecting rod. The recovery valve (29), the material distribution valve (31), the crushing unit (32) and the recovery motor (33) are connected to the controller (12) through signal lines respectively.

6. A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism according to claim 3, characterized in that: Clutches (34) are installed at the connection points of the rotating shaft (4) with the stirring rod (2) and the stirring rod (3). The rotating shaft (4) and the clutches (34) are respectively connected to the switch at the output end of the stirring motor (20) through connecting rods.

7. A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism according to claim 4, characterized in that: A water tank (35) is installed on the upper side of the outer wall of the dust removal unit. A pressure booster (36) is installed on the lower side of the outer wall of the water tank (35). The input end of the pressure booster (36) is connected to the water tank (35) through a water valve (37). The output end of the pressure booster (36) is connected to the ventilation pipe (27) through a connecting pipe. The pressure booster (36) is connected to the switch at the output end of the dust removal motor (26) through a connecting rod. The water valve (37) is connected to the humidity sensor (22) through a signal line.

8. A dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism according to claim 5, characterized in that: The recycling tank (30) has a discharge port 2 (38) installed through the lower side of the inner wall. The discharge port 2 (38) is connected to the extraction box (39) installed on the rear side of the outer wall of the recycling tank (30) through a connecting pipe. The extraction box (39) is equipped with an extraction pump (40). The mixing tank (1) has an inlet (41) installed on the upper side of the outer wall. The collection box (24) has a storage box (42) installed on the rear side of the outer wall. The extraction box (39) is connected to the inlet (41) and the storage box (42) through connecting pipes respectively. The extraction pump (40) is connected to the switch at the output end of the recycling motor (33) through a connecting rod. The extraction pump (40) is connected to the controller (12) through a signal line.

9. A mixing method for a dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism, applicable to the dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism as described in any one of claims 1-8, characterized in that: The stirring method is as follows: S1: The staff connects the storage box (42) for storing materials to the extraction box (39), inputs the dry mortar formula through the controller (12), and the extraction box (39) extracts the materials from the storage box (42) and sends them into the mixing tank (1); S2: The controller (12) controls the stirring motor (20) to drive the rotating shaft one (4) to rotate, so that the stirring rod one (2) and the stirring rod two (3) rotate in opposite directions to mix the materials; S3: After mixing is complete, the controller (12) opens the discharge port (16) to discharge the dry mortar that has been mixed. S4: The controller (12) controls the cleaning motor (11) to drive scraper one (5) and scraper two (9) in sequence to clean the mixing tank (1), mixing rod one (2) and mixing rod two (3); S5: The controller (12) opens the discharge port (16) and connects the material distribution valve (31) to the recycling tank (30) to send the residual mortar into the recycling tank (30).

10. The mixing method of a dry-mixed mortar anti-clogging mixing device with a cleaning and scraping mechanism according to claim 9, characterized in that: Specifically, S4 is: S41: The controller (12) controls the switch connected to the push rod (15) at the output of the cleaning motor (11). Driven by the cleaning motor (11), the push rod (15) pushes the soft plate (14) so ​​that when the scraper (5) contacts the inner wall of the mixing tank (1), both the hard plate (13) and the soft plate (14) contact the inner wall of the mixing tank (1). S42: The cleaning motor (11) is connected to the telescopic shaft (6) through the switch. Under the drive of the telescopic shaft (6), the scraper (5) cleans the inner wall of the mixing tank (1). S43: The controller (12) controls the cleaning motor (11) to connect the baffle (10) and the telescopic shaft (8) in sequence. Under the drive of the cleaning motor (11), the baffle (10) opens, and the telescopic shaft (8) pushes the scraper (9) to clean the stirring rod (2) and the stirring rod (3). After cleaning is completed, the telescopic shaft (8) drives the scraper (9) to retract, and the baffle (10) seals the scraper (9).

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