Concrete mixing plant

Abstract

A concrete mixing plant comprises a mixing cabin, a mixing mechanism and a discharging driving mechanism. The discharging driving mechanism is arranged on the stirring cabin, the stirring mechanism is connected with the discharging driving mechanism, and the stirring mechanism is configured to be driven by the discharging driving mechanism to ascend and descend in the stirring cabin to promote concrete discharging; a discharging pipe is arranged on the bottom wall of the stirring cabin, the stirring mechanism comprises a stirring shaft and an extrusion discharging plate, and the extrusion discharging plate is configured to slide in the discharging pipe so as to push concrete to be discharged; a material receiving and dispersing plate is fixedly arranged on the inner wall of the stirring cabin, discharging grooves are formed in the material receiving and dispersing plate, the discharging grooves are distributed on the material receiving and dispersing plate in a staggered mode, a material dispersing push plate is fixedly arranged on the upper portion of the stirring shaft, and the material dispersing push plate is arranged to be attached to the upper surface of the material receiving and dispersing plate when the stirring shaft is in a descending state. The invention relates to the technical field of concrete production, and provides a concrete mixing plant capable of effectively improving the mixing efficiency and uniformity of concrete raw materials and avoiding blockage of a discharging pipe during discharging.

Description

Technical Field

[0001] The invention relates to the technical field of concrete production, in particular to a concrete mixing station. Background Art

[0002] Concrete mixing station is a combined device used for centralized mixing of concrete. Concrete mixing station has the characteristics of mechanization, automation, high productivity, and can ensure the quality of concrete and save cement. It is often used in large and medium-sized water conservancy, power, bridge and other projects with large concrete engineering volume, long construction period and concentrated construction sites.

[0003] The existing concrete mixing plants have the following main technical defects when performing concrete mixing work: before concrete mixing, multiple raw materials such as mineral powder, sand and gravel, cement, admixtures and clean water need to be added into the mixing chamber. When adding solid raw materials such as mineral powder, sand and gravel, cement, etc., the raw materials usually fall directly below the adding port, and the mixing between the raw materials is only achieved through the mixing mechanism, resulting in poor uniformity of dispersion and mixing between the raw materials, thereby affecting the final preparation quality of the concrete; in addition, the concrete itself is easy to coagulate and aggregate. During the discharging process of the existing concrete mixing plants, the concrete is easy to be blocked at the discharging pipe, thereby affecting the discharging efficiency of the concrete. Summary of the invention In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a concrete mixing station to at least partially solve the problems raised in the above background technology.

[0004] The present invention provides the following technical solution: A concrete mixing station proposed by the present invention comprises a mixing chamber and a mixing mechanism, wherein the mixing mechanism is arranged in the mixing chamber, and the mixing mechanism is configured to rotate and rise and fall in the mixing chamber; wherein: A discharge pipe is provided on the bottom wall of the mixing chamber, and the mixing mechanism includes a mixing shaft and an extrusion discharge plate, wherein the extrusion discharge plate is fixedly connected to the lower end of the mixing shaft, and the extrusion discharge plate is configured to slide in the discharge pipe to push the concrete to be discharged; A feeding pipe is provided on the side wall of the mixing chamber, and a material receiving and bulking plate is fixedly provided on the inner wall of the mixing chamber, the material receiving and bulking plate is used to receive the raw materials added by the feeding pipe, the material receiving and bulking plate is located below the feeding pipe, a material discharge trough is provided on the material receiving and bulking plate, and the material discharge trough is staggered on the material receiving and bulking plate, a bulking pushing plate is fixedly provided on the upper part of the mixing shaft, the bulking pushing plate is configured to fit with the upper surface of the material receiving and bulking plate when the mixing shaft is in a descending state, the bulking pushing plate rotates synchronously with the rotation of the mixing shaft, and the bulking pushing plate is used to push the raw materials on the material receiving and bulking plate for pre-mixing when rotating, and the material receiving and bulking plate and the bulking pushing plate are jointly used to add the raw materials on the material receiving and bulking plate from the staggered material discharge troughs into the mixing chamber in a dispersed feeding manner.

[0005] Furthermore, a concrete mixing station provided by the present invention further includes a discharge drive mechanism, wherein the discharge drive mechanism includes a lifting seat and a cleaning brush, wherein the agitator shaft is rotatably arranged on the lifting seat, wherein the position of the cleaning brush relative to the agitator shaft is adjustable, and when the cleaning brush is in contact with the outer wall of the agitator shaft, the agitator shaft rises, and the cleaning brush is used to clean the concrete raw materials adhered to the surface of the agitator shaft, and when the cleaning brush is away from the agitator shaft, the agitator shaft drives the extrusion discharge plate to descend and pushes the concrete to be discharged from the discharge pipe, and the agitator shaft descends when the cleaning brush is away from the cleaning brush, which can improve the smoothness of the descent of the agitator shaft and the extrusion discharge plate; The discharging drive mechanism also includes a driving component, a lifting component and a cleaning component. The driving component is fixedly arranged on the top wall of the mixing chamber. The lifting component and the cleaning component are both driven by the driving component. The lifting seat is fixedly connected to the lifting component. The lifting component is used to drive the mixing shaft and the extrusion discharging plate to rise and fall in the mixing chamber and the discharging pipe respectively. The cleaning brush is fixedly connected to the cleaning component, and the cleaning component is used to adjust the relative position of the cleaning brush and the mixing shaft.

[0006] Furthermore, the driving assembly includes a driving motor, a support plate, a fan gear, a lifting driving gear and a cleaning driving gear. The driving motor and the support plate are fixedly mounted on the top wall of the mixing chamber. The fan gear, the lifting driving gear and the cleaning driving gear are respectively rotatably mounted on the supporting plate via a group of rotating shafts. The lifting driving gear and the cleaning driving gear are symmetrically arranged on both sides of the fan gear. The fan gear is meshed with the lifting driving gear and the cleaning driving gear at intervals. The rotating shaft of the fan gear is fixedly connected to the output shaft of the driving motor.

[0007] Furthermore, the lifting assembly and the cleaning assembly both include a driving assembly with the same structure, and the driving assembly includes a driving shaft, a disc, a connecting rod one and a connecting rod two. The driving shaft of the lifting assembly is connected to the rotating shaft of the lifting driving gear, and the driving shaft of the cleaning assembly is connected to the rotating shaft of the cleaning driving gear. The disc is fixed on the driving shaft, one end of the connecting rod one is eccentrically hinged to the disc, and one end of the connecting rod two is hingedly connected to the other end of the connecting rod one. When the disc rotates, the connecting rod one applies force to the connecting rod two, thereby driving the connecting rod two to perform lifting or horizontal movement.

[0008] Furthermore, a first protective shell is fixedly provided on the top wall of the mixing chamber, and the second connecting rod of the lifting assembly is slidably provided on the top wall of the first protective shell. Under the action of the first protective shell, the movement of the second connecting rod is limited and guided to ensure that the second connecting rod performs a vertical lifting movement. A transverse support plate is fixedly provided on the upper end of the second connecting rod of the group, and the lifting seat is fixedly connected to the transverse support plate. A stirring motor is fixedly provided on the lifting seat, and the stirring shaft is connected to the output shaft of the stirring motor.

[0009] Furthermore, in order to improve the driving stability of the lifting seat, the lifting component includes two groups of symmetrically arranged drive assemblies, the driving shaft of one group of the drive assemblies is fixedly connected to the rotating shaft of the lifting drive gear, and the first synchronous belt disks are correspondingly fixed on the driving shafts of the two groups of the drive assemblies. The first synchronous belt disks of the two groups are sleeved with the first synchronous belts, and the two groups of drive assemblies are driven to move synchronously under the action of the first synchronous belt and the first synchronous belt disk.

[0010] Furthermore, a second protective shell is fixedly provided on the lower surface of the top wall of the mixing chamber, and the second connecting rod of the cleaning component is slidably provided on the side wall of the second protective shell. Under the action of the second protective shell, the movement of the second connecting rod is limited and guided to ensure that the second connecting rod moves horizontally. The cleaning brush is fixed on the second connecting rod of the cleaning component, and a semicircular arc structure matching the outer surface of the mixing shaft is provided on the side of the cleaning brush facing the mixing shaft. The cleaning component includes two sets of drive assemblies, and the two sets of drive assemblies are symmetrically arranged on both sides of the mixing shaft. The mixing shaft is fully covered and cleaned by the cooperation of the two sets of cleaning brushes.

[0011] Furthermore, the cleaning component also includes a transmission shaft, which is rotatably arranged on the top wall of the mixing chamber, an active conical wheel is fixedly provided on the rotating shaft of the cleaning drive gear, and a driven conical wheel is fixedly provided on the transmission shaft, the driven conical wheel is meshed with the active conical wheel, and the driving shaft of the cleaning component passes through the top wall of the mixing chamber, and a second synchronous belt pulley is correspondingly fixedly provided on the transmission shaft and the driving shaft, and a second synchronous belt pulley is sleeved on two groups of the second synchronous belt pulleys, and the transmission shaft drives the driving shaft to rotate under the action of the first synchronous belt and the second synchronous belt pulley.

[0012] Furthermore, a blocking mechanism is provided at the discharge port of the mixing chamber, and the blocking mechanism includes a first cylinder and a sealing plate. The first cylinder is fixedly provided on the bottom wall of the mixing chamber, and a mounting plate is fixedly provided on the free end of the first cylinder. A rotating motor is fixedly provided on the mounting plate, and one end of the sealing plate is fixedly connected to the output shaft of the rotating motor. The rotating motor and the sealing plate are respectively located above and below the mounting plate, and the size of the sealing plate is larger than the size of the discharge port.

[0013] Furthermore, an annular sealing groove is provided on the bottom wall of the discharge pipe, and an annular sealing protrusion adapted to the annular sealing groove is fixedly provided on the sealing plate. When the sealing plate seals the discharge port, the annular sealing protrusion is just embedded in the annular sealing groove to improve the sealing tightness of the sealing plate to the discharge pipe.

[0014] Furthermore, the blocking mechanism also includes a second cylinder, which is symmetrically arranged on both sides of the discharge pipe with the first cylinder, and a support plate is fixed to the free end of the second cylinder, and the support plate is used to support the blocking plate in the blocked state of the discharge pipe. The cooperation between the second cylinder and the first cylinder can improve the blocking stability of the blocking plate on the discharge pipe.

[0015] Furthermore, the stirring mechanism also includes a stirring paddle, a stirring plate and a scraper. The stirring paddle is fixed on the stirring shaft. The stirring plates are evenly arranged in multiple groups on the stirring paddle. The cross-section of the stirring plate is a triangular structure. The corner surface of the stirring plate facing the rotation direction is an arc-shaped surface. The triangular structure can reduce the resistance encountered by the stirring plate during rotation and stirring. The scraper is fixed on the lower part of the stirring shaft, and the scraper is arranged close to the extrusion discharge plate. Under the action of the scraper, the bottom wall of the stirring tank is scraped to ensure complete discharge. A reinforcing plate is fixed between the scraper and the stirring shaft.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: A concrete mixing station proposed by the present invention has the following advantages: (1) In the technical solution of the present invention, the solid raw materials are added to the mixing chamber in a dispersed manner through the structural coordination of the bulk material push plate, the bulk material receiving plate, and the displaced material discharge trough on the bulk material receiving plate, so as to avoid the solid raw materials from falling into the mixing chamber below the feeding pipe, thereby reducing the working pressure of subsequent mixing and improving the mixing efficiency and uniformity of the raw materials; and when a plurality of solid raw materials are temporarily dropped on the bulk material receiving plate at the same time, the pre-mixing of the solid raw materials can be achieved through the pushing and scraping of the bulk material push plate, and finally the concrete solid raw materials are pushed into the mixing chamber through the discharging trough; (2) In the technical solution of the present invention, the discharge drive mechanism drives the extrusion discharge plate to rise and fall relative to the discharge pipe, regularly clears the discharge pipe, and pushes out the concrete in the discharge pipe to avoid blockage of the discharge pipe, thereby improving the concrete discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure in the main viewing direction of an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of part A Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present invention when viewed from above; Figure 4 for Figure 3 A partial enlarged view of part B; Figure 5 is a schematic cross-sectional structural diagram of an embodiment of the present invention; Figure 6 It is a schematic structural diagram of a bulk material receiving plate and a bulk material pushing plate according to an embodiment of the present invention; Figure 7 It is a schematic diagram of the front structure of the discharging drive mechanism of an embodiment of the present invention; Figure 8 It is a schematic diagram of the rear structure of the discharging drive mechanism of an embodiment of the present invention; Fig. 9 This is a structural schematic diagram of a discharging drive mechanism of an embodiment of the present invention with the support plate removed; Fig.10 It is a schematic structural diagram of a driving assembly of a cleaning component according to an embodiment of the present invention; Fig.11 Schematic diagram of the structure of the stirring mechanism according to an embodiment of the present invention.

[0018] Among them, 1. mixing chamber, 2. mixing mechanism, 3. discharging drive mechanism, 4. discharging pipe, 5. mixing shaft, 6. extrusion discharging plate, 7. lifting seat, 8. cleaning brush, 9. bulk material receiving plate, 10. feeding pipe, 11. unloading chute, 12. bulk material push plate, 13. driving motor, 14. supporting plate, 15. sector gear, 16. lifting driving gear, 17. cleaning driving gear, 18. driving shaft, 19. disc, 20. connecting rod 1, 21. connecting rod 2, 22. first anti- Protective shell, 23, transverse support plate, 24, first synchronous belt, 25, second protective shell, 26, transmission shaft, 27, active conical wheel, 28, driven conical wheel, 29, second synchronous belt, 30, blocking mechanism, 31, first cylinder, 32, blocking plate, 33, mounting plate, 34, rotating motor, 35, annular sealing groove, 36, annular sealing protrusion, 37, second cylinder, 38, supporting plate, 39, stirring paddle, 40, stirring plate, 41, scraper, 42, reinforcing plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] This embodiment is a technical improvement made to address the technical problems that the solid raw material feeding points of existing concrete mixing stations are concentrated, resulting in poor mixing efficiency and easy clogging of the discharge pipe.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 7 The present embodiment provides a concrete mixing station, which includes a mixing chamber 1 and a mixing mechanism 2. The mixing mechanism 2 is configured to rotate and rise and fall in the mixing chamber 1.

[0023] Specifically, see Figure 1 , Figure 2 , Figure 5 and Fig.11 In this embodiment, a discharge pipe 4 is provided on the bottom wall of the mixing chamber 1, and the mixing mechanism 2 includes a mixing shaft 5 and an extrusion discharge plate 6, which is fixedly connected to the lower end of the mixing shaft 5, and the extrusion discharge plate 6 is configured to slide in the discharge pipe 4 to push the concrete out.

[0024] Specifically, see Figure 5 and Figure 6 In this embodiment, the material receiving and bulking plate 9 is used to receive the raw materials added by the feeding pipe 10. The material receiving and bulking plate 9 is fixedly provided on the inner wall of the mixing chamber 1. The feeding pipe 10 is provided on the side wall of the mixing chamber 1. The material receiving and bulking plate 9 is located below the feeding pipe 10. A material discharge trough 11 is provided on the material receiving and bulking plate 9. The material discharge trough 11 is staggered on the material receiving and bulking plate 9. A bulking pushing plate 12 is fixedly provided on the upper part of the mixing shaft 5. The bulking pushing plate 12 is configured to fit with the upper surface of the material receiving and bulking plate 9 when the mixing shaft 5 is in a descending state. The bulking pushing plate 12 rotates synchronously with the rotation of the mixing shaft 5. The plate 9 and the bulk material pushing plate 12 are used together to add the raw materials on the receiving bulk material plate 9 from the staggered discharging trough 11 into the mixing chamber 1 in a dispersed loading manner. When the mixing shaft 5 drives the bulk material pushing plate 12 to rotate, the bulk material pushing plate 12 scrapes the solid raw materials on the receiving bulk material plate 9, and the solid raw materials are pushed to the discharging trough 11 and fall into the mixing chamber 1. Due to the staggered distribution of the discharging troughs 11 of the receiving bulk material plate 9, the solid raw materials fall from different discharging troughs 11 to avoid the solid raw materials falling directly from the feed inlet to a fixed position in the mixing chamber 1, thereby improving the dispersibility of the solid raw materials.

[0025] Reference Figure 6As a specific embodiment, a total of 8 groups of feed troughs 11 are provided on the material receiving and bulking plate 9, and two adjacent groups of material receiving and bulking troughs are staggered. Liquid raw material feeding pipes 10 (such as clean water and admixtures) are correspondingly arranged above the two groups of feed troughs 11 connected to the side walls of the mixing chamber 1. The liquid raw materials are directly added to the mixing chamber 1 from the feed troughs 11 arranged directly opposite to the bottom of the feeding pipes 10. The other groups of feeding pipes 10 are used to add solid raw materials such as mineral powder hoppers, sand and cement. After the solid raw materials are added, they are first received by the material receiving and bulking plate 9. In this embodiment, In the embodiment, the stirring shaft 5 rotates in a clockwise direction, and the stirring shaft 5 drives the bulk material pushing plate 12 to push the fixed material. When the solid raw material is pushed and scraped to the position of the discharge trough 11, a part of it falls from the discharge trough 11, and the remaining solid raw materials that have not fallen from the discharge trough 11 are continuously pushed by the bulk material pushing plate 12 to the position of the next discharge trough 11, and fall from the next discharge trough 11 into the stirring chamber 1, thereby realizing the dispersed loading of the solid raw materials. At the same time, when a variety of solid raw materials that have not fallen are pushed on the bulk material receiving plate 9, a certain degree of pre-mixing can also be achieved.

[0026] It is worth noting that, during actual manufacturing, the mixing chamber 1 needs to be installed on a scaffold. Since the structure of installing the mixing chamber 1 on a scaffold is a prior art, it is not specifically shown in this solution.

[0027] Specifically, see Figure 1 , Fig.10 and Fig.11 In this embodiment, a concrete mixing station provided by the present invention further includes a discharging drive mechanism 3, which includes a lifting seat 7 and a cleaning brush 8. The agitator shaft 5 is rotatably arranged on the lifting seat 7, and the position of the cleaning brush 8 relative to the agitator shaft 5 is adjustable. When the cleaning brush 8 is in contact with the outer wall of the agitator shaft 5, the agitator shaft 5 rises, and the cleaning brush 8 is used to clean the concrete raw materials adhered to the surface of the agitator shaft 5. When the cleaning brush 8 is away from the agitator shaft 5, the agitator shaft 5 drives the extrusion discharging plate 6 to descend and pushes the concrete to be discharged from the discharging pipe 4. The agitator shaft 5 descends when the cleaning brush 8 is away, which can improve the smoothness of the descent of the agitator shaft 5 and the extrusion discharging plate 6.

[0028] Specifically, see Figure 5 In this embodiment, the discharge driving mechanism 3 also includes a driving component, a lifting component and a cleaning component. The driving component is fixedly arranged on the top wall of the mixing chamber 1. The lifting component and the cleaning component are both driven by the driving component. The lifting seat 7 is fixedly connected to the lifting component. The lifting component is used to drive the mixing shaft 5 and the extrusion discharge plate 6 to rise and fall in the mixing chamber 1 and the discharge pipe 4 respectively. The cleaning brush 8 is fixedly connected to the cleaning component, and the cleaning component is used to adjust the relative position of the cleaning brush 8 and the mixing shaft 5.

[0029] It is worth noting that, in actual use, the lifting assembly does not continuously drive the stirring mechanism 2 to perform lifting actions, but drives the stirring mechanism 2 to move at regular intervals to squeeze and clear the discharge port.

[0030] Specifically, see Figure 7 , Figure 8 and Fig. 9 In this embodiment, the driving assembly includes a driving motor 13, a support plate 14, a fan gear 15, a lifting driving gear 16 and a cleaning driving gear 17. The driving motor 13 and the support plate 14 are fixedly arranged on the top wall of the mixing chamber 1. The fan gear 15, the lifting driving gear 16 and the cleaning driving gear 17 are respectively rotatably arranged on the supporting plate 14 through a group of rotating shafts. The lifting driving gear 16 and the cleaning driving gear 17 are symmetrically arranged on both sides of the fan gear 15. The fan gear 15 is meshed with the lifting driving gear 16 and the cleaning driving gear 17 at intervals. The rotating shaft of the fan gear 15 is fixedly connected to the output shaft of the driving motor 13. Under the power drive of the motor 13 and the meshing drive of the fan gear 15, the lifting drive gear 16 and the cleaning drive gear 17 rotate intermittently, thereby driving the lifting component and the cleaning component to move intermittently, and specifically realizing the following actions: first, the cleaning component is driven to drive the cleaning brush 8 to fit the surface of the stirring shaft 5, and then the lifting component is driven to drive the stirring mechanism 2 to rise, and the cleaning brush 8 is used to clean the surface of the stirring shaft 5 during the rising process of the stirring shaft 5; then the cleaning component drives the cleaning brush 8 away from the stirring shaft 5, and finally the lifting component drives the stirring mechanism 2 to descend. The action of the cleaning brush 8 away from the stirring shaft 5 can reduce the descending resistance of the stirring mechanism 2.

[0031] Specifically, see Figure 7 and Fig.10 In this embodiment, the lifting component and the cleaning component both include a driving assembly with the same structure, and the driving assembly includes a driving shaft 18, a disc 19, a connecting rod 1 20 and a connecting rod 2 21. The driving shaft 18 of the lifting component is connected to the rotating shaft of the lifting drive gear 16, and the driving shaft 18 of the cleaning component is connected to the rotating shaft of the cleaning drive gear 17. The disc 19 is fixed on the driving shaft 18, one end of the connecting rod 1 20 is eccentrically hinged to the disc 19, and one end of the connecting rod 21 is hinged to the other end of the connecting rod 1 20. When the disc 19 rotates, the connecting rod 1 20 applies force to the connecting rod 21, driving the connecting rod 21 to perform lifting or horizontal movement.

[0032] Specifically, see Figure 7 , Figure 8 and Fig. 9In this embodiment, a first protective shell 22 is fixedly provided on the top wall of the mixing chamber 1, and the second connecting rod 21 of the lifting assembly is slidably provided on the top wall of the first protective shell 22. Under the action of the first protective shell 22, the action of the second connecting rod 21 is limited and guided to ensure that the second connecting rod 21 performs vertical lifting action. A transverse support plate 23 is fixedly provided on the upper end of the second connecting rod 21, and the lifting seat 7 is fixedly connected to the transverse support plate 23. A stirring motor is fixedly provided on the lifting seat 7, and the stirring shaft 5 is connected to the output shaft of the stirring motor; the lifting assembly includes two groups of symmetrically arranged drive assemblies, a driving shaft 18 of one driving assembly is fixedly connected to the rotating shaft of the lifting drive gear 16, and first synchronous belt reels are correspondingly fixedly provided on the driving shafts 18 of the two groups of driving assemblies, and the two groups of first synchronous belt reels are sleeved with first synchronous belts 24. Under the action of the first synchronous belt 24 and the first synchronous belt reel, the two groups of driving assemblies are driven to move synchronously.

[0033] Specifically, see Fig.10 and Fig.11 In this embodiment, a second protective shell 25 is fixedly provided on the lower surface of the top wall of the mixing chamber 1, and the second connecting rod 21 of the cleaning component is slidably provided on the side wall of the second protective shell 25. Under the action of the second protective shell 25, the movement of the second connecting rod 21 is limited and guided to ensure that the second connecting rod 21 moves horizontally. The cleaning brush 8 is fixedly provided on the second connecting rod 21 of the cleaning component, and a semicircular arc structure adapted to the outer surface of the mixing shaft 5 is provided on the side of the cleaning brush 8 facing the mixing shaft 5. The cleaning component includes two sets of drive assemblies, and the two sets of drive assemblies are symmetrically provided on both sides of the mixing shaft 5. The two sets of cleaning brushes 8 cooperate to control the mixing shaft 5. The shaft 5 is fully covered and cleaned; the cleaning component also includes a transmission shaft 26, which is rotatably arranged on the top wall of the mixing chamber 1, and an active conical wheel 27 is fixedly arranged on the rotating shaft of the cleaning drive gear 17, and a driven conical wheel 28 is fixedly arranged on the transmission shaft 26, and the driven conical wheel 28 is meshed with the active conical wheel 27. The driving shaft 18 of the cleaning component passes through the top wall of the mixing chamber 1, and a second synchronous belt disk is correspondingly fixedly arranged on the transmission shaft 26 and the driving shaft 18, and a second synchronous belt disk 29 is sleeved on the two sets of second synchronous belt disks. Under the action of the first synchronous belt and the second synchronous belt disk, the transmission shaft 26 drives the driving shaft 18 to rotate.

[0034] Specifically, see Figure 2 and Figure 4In this embodiment, a blocking mechanism 30 is provided at the discharge port of the mixing chamber 1. The blocking mechanism 30 includes a first cylinder 31 and a blocking plate 32. The first cylinder 31 is fixedly arranged on the bottom wall of the mixing chamber 1. A mounting plate 33 is fixedly arranged on the free end of the first cylinder 31. A rotating motor 34 is fixedly arranged on the mounting plate 33. One end of the blocking plate 32 is fixedly connected to the output shaft of the rotating motor 34. The rotating motor 34 and the blocking plate 32 are respectively located above and below the mounting plate 33. The size of the blocking plate 32 is larger than the size of the discharge port. The blocking plate 32 is driven to rotate under the action of the rotating motor 34. The blocking plate 32 rotates to the discharge port. When the discharge pipe 4 is at the bottom, the discharge pipe 4 is blocked to prevent concrete discharging during the mixing process, and the longitudinal distance between the blocking plate 32 and the discharge port can be adjusted by the first cylinder 31 to provide sufficient space for the free rotation of the blocking plate 32; the blocking mechanism 30 also includes a second cylinder 37, and the second cylinder 37 and the first cylinder 31 are symmetrically arranged on both sides of the discharge pipe 4, and a supporting plate 38 is fixed to the free end of the second cylinder 37. The supporting plate 38 is used to support the blocking plate 32 in the blocked state of the discharge pipe 4, and the cooperation of the second cylinder 37 and the first cylinder 31 can improve the blocking stability of the blocking plate 32 on the discharge pipe 4.

[0035] Specifically, see Figure 2 and Figure 4 In this embodiment, an annular sealing groove 35 is opened on the bottom wall of the discharge pipe 4, and an annular sealing protrusion 36 adapted to the annular sealing groove 35 is fixedly provided on the sealing plate 32. When the sealing plate 32 blocks the discharge port, the annular sealing protrusion 36 is just embedded in the annular sealing groove 35 to improve the sealing tightness of the sealing plate 32 on the discharge pipe 4.

[0036] Specifically, see Figure 5 and Fig.11 In this embodiment, the stirring mechanism 2 also includes a stirring paddle 39, a stirring plate 40 and a scraper 41. The stirring paddle 39 is fixed on the stirring shaft 5. A plurality of stirring plates 40 are evenly arranged on the stirring paddle 39. The cross-section of the stirring plate 40 is a triangular structure. The surface of one corner of the stirring plate 40 facing the rotation direction is an arc surface. The triangular structure can reduce the resistance encountered by the stirring plate 40 during rotation and stirring. The scraper 41 is fixed on the lower part of the stirring shaft 5, and the scraper 41 is arranged close to the extrusion discharge plate 6. Under the action of the scraper 41, the bottom wall of the stirring tank is scraped to ensure complete discharge. A reinforcing plate 42 is fixed between the scraper 41 and the stirring shaft 5.

[0037] The concrete mixing station provided in this embodiment has the following working principle: (1) In the initial state, the bulk material pushing plate 12 is in contact with the upper surface of the bulk material receiving plate 9 , the blocking plate 32 blocks the discharge pipe 4 , and the extrusion discharge plate 6 is located in the discharge pipe 4 .

[0038] (2) The liquid raw material and the solid raw material are added into the mixing chamber 1 through the feeding pipe 10 respectively. Since the feeding pipe 10 of the liquid raw material corresponds to the discharge trough 11 below, it can be directly added into the mixing chamber 1. The solid raw material corresponds to the non-discharge trough 11 part of the receiving bulk plate 9 below, so it will fall onto the receiving bulk plate 9.

[0039] (3) Start the stirring motor, which drives the stirring shaft 5 to rotate. On the one hand, the stirring shaft 5 drives the bulk material pushing plate 12 to rotate. The bulk material pushing plate 12 pushes and scrapes the solid materials damaged by the bulk material receiving plate 9. During the pushing and scraping process, the fixed materials are dispersed and added into the mixing chamber 1 through the displaced material discharge trough 11. At the same time, the stirring shaft 5 drives the stirring paddle 39 and the stirring plate 40 to rotate in the mixing chamber 1, thereby stirring and mixing the concrete raw materials added into the mixing chamber 1. The scraper 41 scrapes the inner wall of the mixing chamber 1 to prevent the raw materials from settling.

[0040] (4) After the concrete mixing production is completed, the first cylinder 31, the second cylinder 37 and the rotary motor 34 are started simultaneously, and the rotary motor 34 drives the blocking plate 32 to move away from the bottom of the discharge pipe 4.

[0041] (5) During the concrete discharging process, the drive motor 13 is started, and the drive motor 13 drives the fan gear 15 to rotate. The fan gear 15 first meshes with the cleaning drive gear 17, and the rotating shaft of the cleaning drive gear 17 drives the active conical wheel 27 to rotate. The active conical wheel 27 and the driven conical wheel 28 mesh and drive the transmission shaft 26 of the cleaning assembly to rotate. Under the driving action of the second synchronous belt 29, the transmission shaft 26 drives the drive shaft 18 to rotate, and the drive shaft 18 drives the disc 19 to rotate. Under the cooperation of the connecting rod 1 20 and the connecting rod 21, the cleaning brush 8 is driven to approach the stirring shaft 5 and fit with the outer wall of the stirring shaft 5. The cleaning brushes 8 of the two sets of drive assemblies cooperate to fully cover the outer surface of the stirring shaft 5. Afterwards, as the driving motor 13 continues to rotate, the sector gear 15 meshes with the lifting driving gear 16, and the rotating shaft of the lifting driving gear 16 drives the driving shaft 18 of one set of driving assemblies to rotate. Under the action of the first synchronous belt 24, the driving shafts 18 of the two sets of driving assemblies rotate synchronously, and the two sets of driving assemblies cooperate to apply an upward driving force to the transverse support plate 23 and the lifting seat 7. The lifting seat 7 drives the mixing mechanism 2 to move upward, and the extruded discharge plate 6 is moved out of the discharge pipe 4 to realize concrete discharging. In the process of the mixing shaft 5 rising, the cleaning brush 8 cleans the surface of the mixing shaft 5.

[0042] (6) As the concrete is discharged, the drive motor 13 is started again at intervals, and the drive motor 13 drives the fan gear 15 to mesh with the cleaning drive gear 17 again first. This time, the above action is repeated to drive the two sets of cleaning brushes 8 to move away from the stirring shaft 5 respectively; then the fan gear 15 meshes with the lifting drive gear 16, driving the stirring mechanism 2 to move downward, and the extrusion discharge plate 6 moves downward along the discharge pipe 4. The extrusion discharge plate 6 squeezes the concrete inside the discharge pipe 4, thereby clearing the discharge pipe 4, avoiding blockage of the discharge pipe 4, and improving the discharge efficiency.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete mixing station, characterized in that: It comprises a stirring chamber (1) and a stirring mechanism (2), wherein the stirring mechanism (2) is arranged in the stirring chamber (1), and the stirring mechanism (2) is configured to rotate and rise and fall in the stirring chamber (1); wherein: A discharge pipe (4) is provided on the bottom wall of the mixing chamber (1), and the mixing mechanism (2) comprises a mixing shaft (5) and an extrusion discharge plate (6), wherein the extrusion discharge plate (6) is fixedly connected to the lower end of the mixing shaft (5), and the extrusion discharge plate (6) is configured to slide in the discharge pipe (4) to push the concrete to be discharged; A feeding pipe (10) is provided on the side wall of the mixing chamber (1), and a material receiving and bulking plate (9) is fixedly provided on the inner wall of the mixing chamber (1). The material receiving and bulking plate (9) is used to receive the raw materials added by the feeding pipe (10). The material receiving and bulking plate (9) is located below the feeding pipe (10). A material discharge trough (11) is provided on the material receiving and bulking plate (9), and the material discharge trough (11) is staggeredly distributed on the material receiving and bulking plate (9). The mixing shaft (5) A bulk material push plate (12) is fixedly provided on the upper part of the mixing chamber (1). The bulk material push plate (12) is configured to fit with the upper surface of the bulk material receiving plate (9) when the mixing shaft (5) is in a descending state. The bulk material push plate (12) rotates synchronously with the rotation of the mixing shaft (5). When rotating, the bulk material push plate (12) is used to push the raw materials on the bulk material receiving plate (9) for premixing, and allows the raw materials to enter the mixing chamber (1) through the discharge chute (11) in a staggered distribution manner.

2. The concrete mixing station according to claim 1, characterized in that: The stirring shaft (5) further comprises a discharge drive mechanism (3), wherein the discharge drive mechanism (3) comprises a lifting seat (7) and a cleaning brush (8), wherein the stirring shaft (5) is rotatably disposed on the lifting seat (7), and the position of the cleaning brush (8) relative to the stirring shaft (5) is adjustable, and when the cleaning brush (8) is in contact with the outer wall of the stirring shaft (5), the stirring shaft (5) rises, and the cleaning brush (8) is used to clean concrete raw materials adhered to the surface of the stirring shaft (5), and when the cleaning brush (8) is away from the stirring shaft (5), the stirring shaft (5) drives the extrusion discharge plate (6) to descend to push the concrete to be discharged from the discharge pipe (4); The discharge drive mechanism (3) further comprises a drive assembly, a lifting assembly and a cleaning assembly. The drive assembly is fixedly arranged on the top wall of the mixing chamber (1). The lifting assembly and the cleaning assembly are both driven by the drive assembly. The lifting seat (7) is fixedly connected to the lifting assembly. The lifting assembly is used to drive the mixing shaft (5) and the extrusion discharge plate (6) to rise and fall in the mixing chamber (1) and the discharge pipe (4) respectively. The cleaning brush (8) is fixedly connected to the cleaning assembly. The cleaning assembly is used to adjust the relative position of the cleaning brush (8) and the mixing shaft (5).

3. The concrete mixing station according to claim 2, characterized in that: The driving assembly comprises a driving motor (13), a supporting plate (14), a sector gear (15), a lifting driving gear (16) and a cleaning driving gear (17); the driving motor (13) and the supporting plate (14) are both fixedly arranged on the top wall of the mixing chamber (1); the sector gear (15), the lifting driving gear (16) and the cleaning driving gear (17) are respectively rotatably arranged on the supporting plate (14) via a set of rotating shafts; the lifting driving gear (16) and the cleaning driving gear (17) are symmetrically arranged on both sides of the sector gear (15); the sector gear (15) is meshed with the lifting driving gear (16) and the cleaning driving gear (17) at intervals; and the rotating shaft of the sector gear (15) is fixedly connected to the output shaft of the driving motor (13).

4. The concrete mixing station according to claim 3, characterized in that: The lifting assembly and the cleaning assembly both comprise a driving assembly of the same structure, the driving assembly comprising a driving shaft (18), a disc (19), a connecting rod 1 (20) and a connecting rod 2 (21); the driving shaft (18) of the lifting assembly is connected to the rotating shaft of the lifting driving gear (16); the driving shaft (18) of the cleaning assembly is connected to the rotating shaft of the cleaning driving gear (17); the disc (19) is fixedly arranged on the driving shaft (18); one end of the connecting rod 1 (20) is eccentrically hinged to the disc (19); and one end of the connecting rod 2 (21) is hingedly connected to the other end of the connecting rod 1 (20).

5. The concrete mixing station according to claim 4, characterized in that: A first protective shell (22) is fixedly provided on the top wall of the mixing chamber (1); a second connecting rod (21) of the lifting assembly is slidably provided on the top wall of the first protective shell (22); a transverse support plate (23) is fixedly provided on the upper end of the second connecting rod (21); the lifting seat (7) is fixedly connected to the transverse support plate (23); a stirring motor is fixedly provided on the lifting seat (7); and the stirring shaft (5) is connected to the output shaft of the stirring motor; The lifting assembly comprises two sets of symmetrically arranged drive assemblies, wherein the drive shaft (18) of one set of the drive assemblies is fixedly connected to the rotating shaft of the lifting drive gear (16), and first synchronous belt reels are correspondingly fixedly provided on the drive shafts (18) of the two sets of the drive assemblies, and first synchronous belts (24) are sleeved on the two sets of the first synchronous belt reels.

6. The concrete mixing station according to claim 4, characterized in that: A second protective shell (25) is fixedly provided on the lower surface of the top wall of the stirring chamber (1); the second connecting rod (21) of the cleaning component is slidably provided on the side wall of the second protective shell (25); the cleaning brush (8) is fixedly provided on the second connecting rod (21) of the cleaning component; a semicircular arc structure adapted to the outer surface of the stirring shaft (5) is provided on the side of the cleaning brush (8) facing the stirring shaft (5); the cleaning component comprises two sets of drive assemblies, and the two sets of drive assemblies are symmetrically provided on both sides of the stirring shaft (5); The cleaning component further comprises a transmission shaft (26), the transmission shaft (26) being rotatably arranged on the top wall of the mixing chamber (1), a driving conical wheel (27) being fixedly arranged on the rotating shaft of the cleaning drive gear (17), a driven conical wheel (28) being fixedly arranged on the transmission shaft (26), the driven conical wheel (28) being meshed with the driving conical wheel (27), the driving shaft (18) of the cleaning component being arranged to pass through the top wall of the mixing chamber (1), second synchronous belt reels being correspondingly fixedly arranged on the transmission shaft (26) and the driving shaft (18), and second synchronous belt reels (29) being sleeved on two sets of the second synchronous belt reels.

7. The concrete mixing plant according to claim 1, characterized in that: A blocking mechanism (30) is provided at the material outlet of the mixing chamber (1), the blocking mechanism (30) comprising a first cylinder (31) and a blocking plate (32), the first cylinder (31) being fixedly mounted on the bottom wall of the mixing chamber (1), a mounting plate (33) being fixedly mounted on the free end of the first cylinder (31), a rotating motor (34) being fixedly mounted on the mounting plate (33), one end of the blocking plate (32) being fixedly connected to an output shaft of the rotating motor (34), the rotating motor (34) and the blocking plate (32) being respectively located above and below the mounting plate (33), and the size of the blocking plate (32) being larger than the size of the material outlet.

8. The concrete mixing station according to claim 7, characterized in that: An annular sealing groove (35) is provided on the bottom wall of the discharge pipe (4), and an annular sealing protrusion (36) adapted to the annular sealing groove (35) is fixedly provided on the sealing plate (32).

9. The concrete mixing station according to claim 8, characterized in that: The blocking mechanism (30) further comprises a second cylinder (37), the second cylinder (37) and the first cylinder (31) being symmetrically arranged on both sides of the discharge pipe (4), a support plate (38) being fixedly arranged at the free end of the second cylinder (37), the support plate (38) being used to support the blocking plate (32) when the discharge pipe (4) is in a blocked state.

10. The concrete mixing station according to claim 1, characterized in that: The stirring mechanism (2) further comprises a stirring paddle (39), a stirring plate (40) and a scraper (41); the stirring paddle (39) is fixedly mounted on the stirring shaft (5); a plurality of stirring plates (40) are evenly mounted on the stirring paddle (39); the stirring plate (40) has a triangular cross-section; a surface of one corner of the stirring plate (40) facing the direction of rotation is an arc-shaped surface; the scraper (41) is fixedly mounted on the lower portion of the stirring shaft (5); the scraper (41) is disposed close to the extrusion discharge plate (6); and a reinforcing plate (42) is fixedly mounted between the scraper (41) and the stirring shaft (5).

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