Water reducing agent compounding device for concrete

Abstract

The application relates to the technical field of water-reducing agent compounding, and specifically discloses a water-reducing agent compounding device for concrete, which comprises a tank body, a middle shaft column and a stirring mechanism, the top of the tank body is provided with a powder adding hole, the bottom of the tank body is provided with a discharging hole, the middle shaft column is located in the tank body and is coaxially connected with the tank body, the section of the middle shaft column is circular and the surface of the middle shaft column is smooth, the stirring mechanism further comprises a stirring ring, a stirring rod, a torque transmission assembly and a driving assembly, the stirring ring is coaxially sleeved outside the middle shaft column, one end of the stirring rod is connected to the outer edge sidewall of the stirring ring, the torque transmission assembly is used for controlling the coaxial rotation of the stirring ring around the middle shaft column, and the driving assembly is used for driving the stirring ring to move along the axial direction of the middle shaft column; a fluid conveying channel is coaxially arranged in the center of the middle shaft column, a plurality of jet holes, which are in communication with the fluid conveying channel, are arranged on the sidewall of the middle shaft column, and the fluid conveying channel is connected with a liquid raw material source or a nitrogen gas source. The application has the effects of high stirring efficiency and that the raw material is not easy to adhere to the middle shaft column.

Description

Technical Field

[0001] This invention relates to the technical field of water-reducing agent compounding, and more specifically to a water-reducing agent compounding device for concrete. Background Technology

[0002] Water-reducing agents are concrete admixtures that reduce the amount of water used in mixing while maintaining a relatively constant slump. Most are anionic surfactants, including lignin sulfonates, naphthalene sulfonates, and formaldehyde polymers. When added to concrete mixes, they disperse cement particles, improve workability, reduce water usage per unit area, improve the fluidity of the concrete mix, or reduce cement usage per unit area, thus saving cement.

[0003] Various water-reducing agents utilize compounding devices during production or use to mix the water-reducing agent concentrate and additives and deliver them to the working environment. Chinese patent document CN211864652U discloses a compounding and homogenizing device for a high-efficiency, early-strength water-reducing agent in concrete. This device includes a main body, a vertically fixed spiral shaft within the main body, and a movable pair (I) adapted to the outer wall of the spiral shaft. A hydraulic cylinder driving the movable pair (I) is located at the upper end of the spiral shaft. The movable pair (I) is a hollow cylindrical ring structure. An inlet communicating with its hollow inner cavity is opened on the upper surface of the movable pair (I). A discharge pipe communicating with its hollow inner cavity is arranged in a ring array on the lower side wall of the movable pair (I). A second movable pair (II), adapted to the spiral shaft, is located on the lower surface of the movable pair (II). Several stirring mechanisms are fixed to the outer wall of the second movable pair (II).

[0004] According to its operating principle, the twisted shaft is located in the central part of the main body. When movable pair one and movable pair two move vertically under the thrust, the spiral structure of the twisted shaft is used to apply a lateral force to the two movable pairs, pushing movable pair one and movable pair two to rotate. That is, the spiral structure of the twisted shaft is an indispensable structure that enables movable pair one and movable pair two to rotate. However, due to the excessive number of angular grooves on the twisted shaft and the slow flow rate of the material mixture in the central part of the main body, the material mixture is prone to adhering to the side wall of the twisted shaft. When the material mixture is discharged from the main body, a large amount of material residue will be generated on the twisted shaft. Summary of the Invention

[0005] This invention provides a device for compounding water-reducing agents for concrete, which aims to solve the problem of a large amount of material mixture easily remaining on the twisted shaft in related technologies.

[0006] The application discloses a water-reducing agent compounding device for concrete, which comprises a tank body, a powder adding hole is arranged at the top of the tank body, a discharge hole is arranged at the bottom of the tank body, a stirring mechanism is arranged in the tank body, and the stirring mechanism comprises a stirring rod; a middle shaft column is arranged in the tank body and fixedly connected with the tank body, the cross section of the middle shaft column is circular and the surface of the middle shaft column is smooth, the stirring mechanism further comprises a stirring ring, the stirring ring is coaxially arranged outside the middle shaft column, one end of the stirring rod is connected to the outer edge sidewall of the stirring ring, the stirring mechanism further comprises a torque transmission assembly and a driving assembly, the torque transmission assembly is used for controlling the coaxial rotation of the stirring ring around the middle shaft column, and the driving assembly is used for driving the stirring ring to move along the axial direction of the middle shaft column; a fluid conveying channel is arranged in the center of the middle shaft column, a plurality of jet holes are arranged on the sidewall of the middle shaft column, the jet holes are communicated with the fluid conveying channel, and the fluid conveying channel is connected with a liquid raw material source or a gas source.

[0007] The middle shaft column is arranged at the central position in the tank body, the stirring ring carrying the stirring rod rotates around the middle shaft column or slides along the middle shaft column, so that the material mixture at different heights in the tank body can be stirred, the surface of the middle shaft column is smooth, there is almost no other edge structure except the hole structure of the jet hole, and the material is not easy to adhere and difficult to be completely discharged; in the mixture raw material, the powder enters the tank body through the powder adding hole, and the liquid material including water enters the tank body through the fluid conveying channel and the jet hole, meanwhile, during the stirring process, the gas flow can be sprayed into the tank body through the fluid conveying channel, the flow speed of the mixture at the hole of the jet hole is improved, the movement state of the mixture near the middle shaft column is higher, and the probability of the material adhering to the hole of the jet hole is further reduced.

[0008] Preferably, the stirring mechanism further comprises a linking ring, the linking ring is coaxially arranged outside the middle shaft column, the linking ring is coaxially rotationally connected with the stirring ring, and the driving assembly is used for driving the linking ring to move along the length direction of the middle shaft column.

[0009] The effect is that the driving power cylinder drives the linking ring to move through the telescopic piston rod, and the linking ring drives the stirring ring to rotate, that is, the linking ring carries the stirring ring to different axial positions for stirring operation.

[0010] Preferably, the torque transmission assembly comprises a torque motor, a control gear and a torque rod, the control gear is rotationally connected to the linking ring, a force receiving gear ring is fixedly connected with the stirring ring in a coaxial mode, the control gear is engaged with the force receiving gear ring, the torque motor is connected with the tank body, and the torque motor transmits torque to the control gear through the torque rod.

[0011] Preferably, a transmission gear ring is rotationally connected to the tank body, the torque motor is configured to drive the transmission gear ring to rotate, the transmission gear ring and the control gear are coaxial, the length direction of the torque rod is parallel to the axial direction of the central column, one end of the torque rod is fixedly connected to the control gear coaxially, the other end penetrates the transmission gear ring coaxially, a synchronous groove is formed in the side wall of the torque rod, the length direction of the synchronous groove is parallel to the length direction of the torque rod, a synchronous block is fixedly connected to the inner edge of the transmission gear ring, an abutting ball is embedded in the side wall of the synchronous block, the synchronous block is located in the synchronous groove, and the abutting ball abuts against the groove wall of the synchronous groove.

[0012] The effect is that the transmission gear ring can rotate after the torque motor is started, the synchronous block applies a torque to the torque rod through the abutting ball to make the torque rod rotate synchronously when the transmission gear ring rotates, and the torque rod moves synchronously when the adapter ring moves vertically, at which time the abutting ball and the groove wall of the synchronous groove rollingly abut, and the circumferential synchronous relationship between the transmission gear ring and the torque rod remains stable.

[0013] Preferably, a balance gear is rotationally arranged on the adapter ring, the axial line of the balance gear is parallel to the axial line of the control gear, and the balance gear is engaged with the force receiving gear ring.

[0014] The effect is that the balance gear and the control gear are engaged with the force receiving gear ring respectively, the number of gear pair distribution points around the force receiving gear ring is increased, and the coaxial stability of the stirring ring and the adapter ring is improved.

[0015] Preferably, a scraper is fixedly connected to the end of the stirring rod away from the stirring ring, and a contact friction member is fixedly connected to the side of the scraper close to the inner wall of the tank body.

[0016] The effect is that the contact friction member is used to directly contact and rub against the inner wall of the tank body during the rotation of the stirring rod, so that the adhesion of raw materials on the inner wall of the tank body is reduced.

[0017] Preferably, the stirring rod is slidingly arranged relative to the stirring ring, the length direction of the stirring rod and the sliding direction are both radial directions of the stirring ring, and an adjusting assembly for controlling the sliding of the stirring rod is arranged in the stirring ring.

[0018] The effect is that the rotational resistance of the stirring ring is large, the output torque demand of the control gear is also large, in order to reduce unnecessary resistance, the contact state between the contact friction member and the inner wall of the tank body is not normal, when the contact friction member does not contact the inner wall of the tank body, the torque demand of the torque transmission assembly is relatively small.

[0019] Preferably, the adjusting assembly comprises a reset spring, an adjusting wedge, an adjusting wedge ring and a thrust block, the adjusting wedge is connected with the stirring rod, the adjusting wedge ring is coaxially and slidingly connected with the stirring ring, the wedge surface of the adjusting wedge and the wedge surface of the adjusting wedge ring abut, one end of the reset spring is connected with the stirring ring and the other end is connected with the adjusting wedge, in the natural state, there is a gap between the contact friction member and the inner wall of the tank, the thrust block is slidingly connected with the engaging ring or the stirring ring, the sliding direction is parallel to the sliding direction of the adjusting wedge ring, and the thrust block applies a thrust force to the adjusting wedge ring.

[0020] Preferably, the piston rod of the driving power cylinder and the engaging ring slide relative to each other, the sliding direction is the axial direction of the engaging ring, the thrust block is connected to the end of the piston rod of the driving power cylinder, the side of the thrust block facing the adjusting wedge ring is embedded with thrust balls, the thrust balls abut against the adjusting wedge ring, and the paddle is fixedly connected to the stirring rod, the plate surface of the paddle is inclined relative to the horizontal direction, and when the stirring rod rotates with the stirring ring, the resistance generated by the mixture in the tank on the paddle has a component in the direction of the driving power cylinder.

[0021] The effect is that, in addition to gravity, the resistance of the engaging ring and the stirring ring moving close to the driving power cylinder is smaller than the resistance of the engaging ring and the stirring ring moving away from the driving power cylinder, when the piston rod of the driving power cylinder moves quickly towards the stirring ring, the controlled movement of the stirring ring relative to the piston rod of the driving power cylinder has hysteresis because the vertical resistance of the stirring ring is relatively large, so during this process, the thrust block moves relative to the stirring ring and abuts against the adjusting wedge ring through the thrust balls, the adjusting wedge ring pushes the adjusting wedge to apply a thrust force to move the stirring rod, and finally the contact friction member contacts the inner wall of the tank.

[0022] Preferably, the injection holes are arranged in multiple rows, the multiple rows of injection holes are arranged along the length direction of the central shaft column, a single row of injection holes comprises multiple injection holes and the multiple injection holes are arranged in an array along the circumferential direction of the central shaft column, multiple booster plates are fixedly connected to the stirring ring, the plate surface of the booster plate is parallel to the length direction of the central shaft column, the plate surface of the booster plate is inclined relative to the radial direction of the stirring ring, and multiple booster plates are arranged in an array along the circumferential direction of the stirring ring.

[0023] The effect is that the thrust force generated by the fluid flowing out of the injection holes on the booster plate can also be one of the driving forces for driving the stirring ring to rotate and the mixture in the tank to flow circumferentially, further reducing the torque pressure of the torque transmission assembly.

[0024] By adopting the technical solutions, the application has the following beneficial effects:

[0025] The application can improve the space distribution uniformity of liquid material by adding liquid material into the tank through the fluid delivery channel, and the fluid sprayed through the spray hole can also have a certain stirring effect on the mixture during the stirring process, on this basis, the thrust generated by the fluid on the booster plate can also be used as the power for the rotation of the stirring ring, thereby reducing the work pressure of the torque transmission assembly, improving the stirring efficiency, further, the fluid assisted stirring and the stirring effect of the booster plate improve the fluid speed around the central shaft column, and reduce the adhesion of the material on the central shaft column. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the overall structure of the water reducing agent compounding device for concrete in the embodiment of the application.

[0027] Figure 2 is the internal structure of the adapter ring in the embodiment of the application.

[0028] Figure 3 is the arrangement position of the control gear, the balance gear and the piston rod of the driving power cylinder on the circumference of the adapter ring in the embodiment of the application.

[0029] Figure 4 is the cooperation structure of the transmission gear ring and the torque rod in the embodiment of the application.

[0030] Figure 5 is the structure of the adjusting assembly in the embodiment of the application.

[0031] Figure 6 is the structure of the stirring mechanism in the embodiment of the application.

[0032] Figure 7 is the arrangement angle of the spray hole and the booster plate in the embodiment of the application.

[0033] Reference signs:

[0034] 1. Tank body; 11. Powder addition port; 12. Discharge port; 121. Discharge pipe; 2. Central shaft column; 21. Fluid conveying channel; 22. Injection port; 3. Stirring mechanism; 31. Stirring ring; 311. Adjustment chamber; 312. Force-bearing toothed ring; 32. Stirring rod; 321. Paddle; 33. Scraper; 331. Contact friction element; 34. Connecting ring; 341. Control chamber; 35. Balance ball; 36. Assist plate; 4. Torque transmission assembly; 41. Torque motor; 411. Motor gear; 42. Control gear; 43. Torque rod; 431. Synchronization groove; 44. Transmission gear ring; 441. Synchronization block; 442. Abutment ball; 45. Balance gear; 5. Drive assembly; 51. Drive power cylinder; 52. Limiting shoulder; 6. Adjustment assembly; 61. Return spring; 62. Adjusting wedge block; 63. Adjusting wedge ring; 631. Mating ring groove; 64. Thrust block; 641. Thrust ball. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] The following is combined with Figures 1 to 7 This invention describes a concrete water-reducing agent compounding device.

[0037] This embodiment discloses a compounding device for water-reducing agents in concrete, such as... Figure 1 As shown, it includes a tank body 1, a central column 2 and a stirring mechanism 3. The top of the tank body 1 is provided with a powder addition hole 11 and the bottom of the tank body 1 is provided with a discharge hole 12.

[0038] The central column 2 is located inside the tank 1 and is coaxially and fixedly connected to the tank 1. A circular through hole is coaxially opened at the center of the central column 2, forming a fluid conveying channel 21. Multiple injection holes 22 communicating with the fluid conveying channel 21 are opened on the side wall of the central column 2. A hose is connected to the top of the central column 2, and the inner cavity of the hose is connected to the fluid conveying channel 21. The central column 2 is connected to a liquid raw material source through the hose. Before compounding, powdered material is added into the tank 1 through the powder addition hole 11, and liquid raw material is added into the tank 1 through the fluid conveying channel 21. After compounding, the mixture is discharged from the tank 1 through the discharge hole 12. The stirring mechanism 3 is used to stir the mixture in the tank 1.

[0039] like Figures 1-3 As shown, the cross-section of the central column 2 is circular and the surface is smooth. The stirring mechanism 3 also includes a connecting ring 34, a stirring ring 31 and multiple stirring rods 32. The stirring ring 31 and the connecting ring 34 are coaxially sleeved on the outside of the central column 2. The connecting ring 34 and the stirring ring 31 are coaxially rotatably connected, and the connecting ring 34 is located above the stirring ring 31.

[0040] The four stirring rods 32 are arranged in the circumferential direction of the stirring ring 31, and the length direction of each stirring rod 32 is the radial direction of the stirring ring 31. The stirring rod 32 is further fixedly connected with a paddle plate 321. The stirring mechanism 3 further comprises a torque transmission assembly 4 and a driving assembly 5. The torque transmission assembly 4 is used to control the coaxial rotation of the stirring ring 31 around the central shaft column 2. The driving assembly 5 is used to drive the adapter ring 34 to move along the axial direction of the central shaft column 2. The stirring rod 32 rotates with the stirring ring 31, thereby stirring the mixture in the tank body 1. The stirring ring 31 moves with the adapter ring 34, thereby making the stirring rod 32 contact the mixture at different heights. In order to improve the smoothness of the stirring ring 31 and the adapter ring 34 during rotation or movement, a plurality of balance balls 35 are embedded in the inner side wall of the adapter ring 34 and the stirring ring 31. The balance balls 35 roll against the side wall of the central shaft column 2, which is used to improve the balance of the stirring ring 31 and the adapter ring 34 during movement and the coaxiality with the central shaft column 2.

[0041] As shown in Figures 1-3 The torque transmission assembly 4 comprises a torque motor 41, a control gear 42, a transmission gear ring 44 and a torque rod 43. The torque motor 41 is fixedly connected with the tank body 1, and the torque motor 41 transmits torque to the control gear 42 through the torque rod 43. The transmission gear ring 44 is rotatably installed on the top of the tank body 1 through a bearing. A motor gear 411 is coaxially fixedly connected with the output shaft of the torque motor 41, and the motor gear 411 is engaged with the transmission gear ring 44. The torque motor 41 can make the transmission gear ring 44 rotate after being started. The adapter ring 34 is provided with a control cavity 341. The control gear 42 is located in the control cavity 341. A stress gear ring 312 is coaxially fixedly connected with the stirring ring 31. The control gear 42 is engaged with the stress gear ring 312. The transmission gear ring 44 is coaxial with the control gear 42. The length direction of the torque rod 43 is parallel to the axial direction of the central shaft column 2. The lower end of the torque rod 43 is located in the control cavity 341 and is coaxially fixedly connected with the control gear 42. The upper end of the torque rod 43 coaxially penetrates the transmission gear ring 44. The control gear 42 is rotatably connected with the adapter ring 34 through the torque rod 43.

[0042] As shown in Figures 2-4As shown, two synchronous grooves 431 are arranged on the side wall of the torque rod 43, the length direction of the synchronous grooves 431 is parallel to the length direction of the torque rod 43, the inner edge of the transmission gear ring 44 is fixedly connected with two synchronous blocks 441, two abutting balls 442 are arranged on the side wall of a single synchronous block 441, a single synchronous block 441 is located in a synchronous groove 431, and the abutting balls 442 abut against the groove wall of the synchronous groove 431; when the transmission gear ring 44 rotates, the synchronous blocks 441 apply torque to the torque rod 43 through the abutting balls 442 to make the torque rod 43 rotate synchronously, and when the adapter ring 34 moves vertically, the torque rod 43 moves synchronously, at this time, the abutting balls 442 and the groove wall of the synchronous groove 431 rollingly abut, and the circumferential synchronous relationship between the transmission gear ring 44 and the torque rod 43 remains stable. Since the control gear 42 is eccentric relative to the stirring ring 31, in order to improve the stress balance of the stress tooth ring 312, two balance gears 45 are arranged in the control cavity 341 and rotate on the adapter ring 34, the two balance gears 45 are engaged with the stress tooth ring 312, the control gear 42 and the two balance gears 45 are arranged in an array around the circumferential direction of the stress tooth ring 312, so that the coaxial stability of the stirring ring 31 and the adapter ring 34 is improved.

[0043] As shown in Figure 1 and Figure 3 , the driving assembly 5 includes a driving power cylinder 51, the cylinder body of the driving power cylinder 51 is located at the top of the tank body 1 and is fixedly connected with the tank body 1, the extension direction of the piston rod of the driving power cylinder 51 is parallel to the axial direction of the central shaft column 2, and the piston rod of the driving power cylinder 51 is connected with the adapter ring 34. In this embodiment, the driving power cylinder 51 is an oil cylinder and the number is three, and the connection points of the piston rods of the three oil cylinders and the adapter ring 34 are uniformly arranged along the circumferential direction of the adapter ring 34.

[0044] As shown in Figure 1 , Figure 5 and Figure 6 , the stirring rod 32 is fixedly connected with a scraper 33 at the end away from the stirring ring 31, the length direction of the side edge of the scraper 33 close to the inner wall of the tank body 1 is a vertical direction, and a contact friction member 331 is fixedly connected to this edge, and in this embodiment, the contact friction member 331 is a rubber strip. In the process of rotating the stirring rod 32, the contact friction member 331 is used to directly contact and rub with the inner wall of the tank body 1, thereby reducing the attachment of raw materials on the inner wall of the tank body 1. Since the rotating resistance of the stirring ring 31 is large, the output torque demand of the control gear 42 is also large, in order to reduce unnecessary resistance, the stirring rod 32 is arranged to slide relative to the stirring ring 31, the length direction of the stirring rod 32 and the sliding direction are both radial directions of the stirring ring 31, and the stirring ring 31 is provided with an adjusting assembly 6 for controlling the sliding of the stirring rod 32, that is, the contact state of the contact friction member 331 and the inner wall of the tank body 1 is not normal.

[0045] As shown in Figure 1 , Figure 5 andFigure 6 As shown, the stirring ring 31 is provided with an adjusting cavity 311, and the stirring rod 32 is located in the adjusting cavity 311 away from the end of the scraper 33. The adjusting assembly 6 comprises a reset spring 61, an adjusting wedge block 62 and an adjusting wedge ring 63, which are all located in the adjusting cavity 311. The adjusting wedge block 62 is fixedly connected to the end of the stirring rod 32. One end of the reset spring 61 is fixedly connected to the stirring ring 31, and the other end is fixedly connected to the adjusting wedge block 62. The adjusting wedge ring 63 is coaxially and slidingly connected to the stirring ring 31. The reset spring 61 applies a pushing force to the adjusting wedge block 62 and the stirring rod 32 towards the central shaft column 2. The wedge surface of the adjusting wedge block 62 abuts against the wedge surface of the adjusting wedge ring 63. In the natural state, there is a gap between the contact friction member 331 and the inner wall of the tank body 1. When the adjusting wedge ring 63 moves axially downward and generates a transverse abutting pushing force to the adjusting wedge block 62, the reset spring 61 has a tendency to be compressed, the stirring rod 32 moves away from the central shaft column 2, and the scraper 33 can approach the inner wall of the tank body 1.

[0046] As shown, Figure 6 The end of the piston rod of the driving power cylinder 51 and the engaging ring 34 slide relative to each other in the axial direction of the engaging ring 34. The adjusting assembly 6 further comprises a thrust block 64 fixedly connected to the end of the piston rod of the driving power cylinder 51. The thrust block 64 extends into the adjusting cavity 311 through the control cavity 341. A limiting shaft shoulder 52 is fixedly connected between the thrust block 64 and the end of the piston rod of the driving power cylinder 51. The limiting shaft shoulder 52 prevents the thrust block 64 from moving upward out of the control cavity 341, and thus prevents the engaging ring 34 from being separated from the piston rod of the driving power cylinder 51. The end of the thrust block 64 extending into the adjusting cavity 311 is embedded with a thrust ball 641. The upper side of the adjusting wedge ring 63 is coaxially provided with a matching ring groove 631. The cross section of the matching ring groove 631 is V-shaped. The thrust ball 641 abuts against the groove wall of the matching ring groove 631. During the rotation of the adjusting wedge ring 63 with the stirring ring 31, the thrust ball 641 and the groove wall of the matching ring groove 631 relatively roll.

[0047] As shown, Figure 5 and Figure 6As shown, the paddle surface of the paddle 321 is inclined relative to the horizontal direction, and when the stirring rod 32 rotates with the stirring ring 31, the resistance generated by the mixture in the tank 1 on the paddle 321 has a component force directed towards the driving power cylinder 51, that is, in addition to gravity, the resistance of the connecting ring 34 and the stirring ring 31 moving upwards is smaller than that of moving downwards. When the piston rod of the driving power cylinder 51 rises, it generates a pulling force on the connecting ring 34 through the limiting shaft shoulder 52 to move the connecting ring 34 and the stirring ring 31, and when the piston rod of the driving power cylinder 51 rapidly descends, the vertical resistance received by the stirring ring 31 is relatively large, and the downward movement of the stirring ring 31 lags behind the piston rod of the driving power cylinder 51, so during this process, the thrust block 64 moves downward relative to the stirring ring 31, and it can apply a thrust force to the adjusting wedge ring 63 through the thrust ball 641, the adjusting wedge ring 63 further pushes the adjusting inclined block to apply a thrust force to move the stirring rod 32, and finally the contact friction part 331 contacts the inner wall of the tank 1.

[0048] As shown in Figure 1 and Figure 7 As shown, the injection holes 22 are arranged in multiple rows, and the multiple rows of injection holes 22 are arranged along the length direction of the central shaft column 2, and a single row includes multiple injection holes 22 arranged in an array along the circumferential direction of the central shaft column 2. The diameter of the injection hole 22 is selected to be 1-2 mm, and the diameters of the injection holes 22 arranged from top to bottom gradually increase. In addition to the liquid raw material source, the fluid conveying channel 21 is also externally connected to a nitrogen gas source through a hose, and after the addition of the liquid raw material is completed and during the stirring and mixing process, nitrogen gas is continuously input into the tank 1 through the fluid conveying channel 21, and the nitrogen gas flow can assist in stirring the mixture inside the tank 1. A plurality of assisting plates 36 are fixedly connected to the stirring ring 31, the plate surface of the assisting plate 36 is parallel to the length direction of the central shaft column 2, and the plurality of assisting plates 36 are arranged in an array along the circumferential direction of the stirring ring 31; and the plate surface of the assisting plate 36 is inclined relative to the radial direction of the stirring ring 31, that is, the fluid flowing out through the injection hole 22 also has an inclined angle with the plate surface of the assisting plate 36, so that the thrust force generated by the fluid flowing out through the injection hole 22 on the assisting plate 36 can also be one of the driving forces for driving the stirring ring 31 to rotate and the mixture in the tank 1 to flow circumferentially, further reducing the torque pressure of the torque transmission assembly 4.

[0049] As shown in Figure 1 The bottom of the tank 1 is in the shape of a circular bucket, and the discharge hole 12 is located at the center of the bottom of the tank 1; the bottom of the tank 1 is fixedly connected with an L-shaped discharge pipe 121 which is in communication with the discharge hole 12, and the discharge pipe 121 has a stop valve therein, and the bottom end of the central shaft column 2 is fixedly connected with the inner wall of the discharge pipe 121.

[0050] The working process of the embodiment is as follows:

[0051] When the mixture in the tank 1 has enough fluidity, the torque transmission assembly 4 is opened to drive the stirring ring 31 to rotate with the stirring rods 32 to stir and mix the mixture. After the liquid raw material is added, the nitrogen gas source is switched, and nitrogen gas is injected into the tank 1 through the fluid conveying channel 21 to assist in stirring. The driving assembly 5 is opened to adjust the height position of the stirring ring 31 to improve the spatial uniformity of the mixing degree. When the control link ring 34 and the stirring ring 31 are lowered, the piston rod end of the thrust driving power cylinder 51 axially displaces relative to the stirring ring 31, so that the contact friction member 331 contacts the inner wall of the tank 1.

[0052] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A water reducing agent compounding device for concrete, comprising a tank body, a powder adding hole is arranged at the top of the tank body, a discharge hole is arranged at the bottom of the tank body, a stirring mechanism is arranged in the tank body, and the stirring mechanism comprises a stirring rod; characterized in that a middle shaft column is further arranged in the tank body and fixedly connected with the tank body, the cross section of the middle shaft column is circular and the surface is smooth, the stirring mechanism further comprises a stirring ring, the stirring ring is coaxially sleeved outside the middle shaft column, one end of the stirring rod is connected to the outer edge side wall of the stirring ring, the stirring mechanism further comprises a torque transmission assembly and a driving assembly, the torque transmission assembly is used for controlling the coaxial rotation of the stirring ring around the middle shaft column, and the driving assembly is used for driving the stirring ring to move along the axial direction of the middle shaft column; a fluid conveying channel is arranged in the center of the middle shaft column, a plurality of spray holes are arranged on the side wall of the middle shaft column, the spray holes are communicated with the fluid conveying channel, and the fluid conveying channel is connected with a liquid raw material source or a gas source; the stirring mechanism further comprises a connecting ring, the connecting ring is coaxially sleeved outside the middle shaft column, the connecting ring is coaxially rotationally connected with the stirring ring, and the driving assembly is used for driving the connecting ring to move along the length direction of the middle shaft column; the torque transmission assembly comprises a torque motor, a control gear and a torque rod, the control gear is rotationally connected to the connecting ring, a force receiving gear ring is fixedly connected to the stirring ring in a coaxial mode, the control gear is engaged with the force receiving gear ring, the torque motor is connected with the tank body, and the torque motor transmits torque to the control gear through the torque rod; a transmission gear ring is rotationally connected to the tank body, the torque motor is used for driving the transmission gear ring to rotate, the transmission gear ring is coaxial with the control gear, the length direction of the torque rod is parallel to the axial direction of the middle shaft column, one end of the torque rod is fixedly connected with the control gear in a coaxial mode, the other end is coaxially penetrated through the transmission gear ring, a synchronous groove is arranged on the side wall of the torque rod, the length direction of the synchronous groove is parallel to the length direction of the torque rod, a synchronous block is fixedly connected to the inner edge of the transmission gear ring, abutting balls are embedded on the side wall of the synchronous block, the synchronous block is located in the synchronous groove, and the abutting balls abut against the groove wall of the synchronous groove. A plurality of booster plates are fixedly connected to the stirring ring, and the fluid sprayed out of the spray holes generates thrust on the booster plates.

2. The water reducer compounding device for concrete according to claim 1, characterized in that, A balance gear is rotationally arranged on the connecting ring, the axis of the balance gear is parallel to the axis of the control gear, and the balance gear is engaged with the force receiving gear ring.

3. The water reducer compounding device for concrete according to claim 1, characterized in that, A scraper is fixedly connected to the end of the stirring rod away from the stirring ring, and a contact friction member is fixedly connected to the side of the scraper close to the inner wall of the tank body.

4. The water reducer compounding device for concrete according to claim 3, characterized in that, The stirring rod is slidingly arranged relative to the stirring ring, the length direction of the stirring rod and the sliding direction are both radial directions of the stirring ring, and an adjusting assembly for controlling the sliding of the stirring rod is arranged in the stirring ring.

5. The water reducer compounding device for concrete according to claim 4, wherein The adjusting assembly comprises a return spring, an adjusting wedge block, an adjusting wedge ring and a thrust block, the adjusting wedge block is connected with the stirring rod, the adjusting wedge ring is slidingly connected with the stirring ring in a coaxial mode, the wedge surface of the adjusting wedge block abuts against the wedge surface of the adjusting wedge ring, one end of the return spring is connected with the stirring ring, the other end is connected with the adjusting wedge block, in a natural state, a gap is formed between the contact friction member and the inner wall of the tank body, the thrust block is slidingly connected with the connecting ring or the stirring ring, the sliding direction is parallel to the sliding direction of the adjusting wedge ring, and the thrust block applies thrust to the adjusting wedge ring.

6. The water reducer compounding device for concrete according to claim 5, wherein The piston rod of the driving power cylinder and the abutment ring slide relative to each other, the sliding direction is the axial direction of the abutment ring, the thrust block is connected to the end of the piston rod of the driving power cylinder, the thrust block is embedded with thrust balls towards one side of the adjusting wedge ring, the thrust balls and the adjusting wedge ring abut, the paddle is fixedly connected to the stirring rod, the surface of the paddle is inclined relative to the horizontal direction, when the stirring rod rotates with the stirring ring, the resistance generated by the mixture in the tank to the paddle has a component force towards the driving power cylinder.

7. The water reducer compounding device for concrete according to claim 1, characterized by The injection holes are provided in multiple rows, the multiple rows of injection holes are arranged along the length direction of the central shaft column, a single row includes multiple injection holes and the multiple injection holes are arranged in an array along the circumferential direction of the central shaft column, multiple booster plates are fixedly connected to the stirring ring, the surface of the booster plate is parallel to the length direction of the central shaft column, and the surface of the booster plate is inclined relative to the radial direction of the stirring ring, and the multiple booster plates are arranged in an array along the circumferential direction of the stirring ring.

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