Anti-blocking structure on automatic polycarboxylate superplasticizer discharging device

Abstract

The utility model relates to an anti-blocking structure on an automatic polycarboxylic acid water reducing agent discharging device, which comprises a horizontal discharging cylinder pipe, a water reducing agent drying tank is arranged above the left side of the discharging cylinder pipe, the water reducing agent drying tank is provided with a flow guide cylinder with a conical lower end, a vertical discharging nozzle is formed on the flow guide cylinder, and the discharging nozzle is connected with the water reducing agent drying tank. The lower end of the discharging nozzle is fixedly connected to the outer wall of the discharging cylinder pipe and communicated with the discharging cylinder pipe, the two ends of the discharging cylinder pipe are fixedly connected with end plates respectively, and the outer wall of the lower side of the right end of the discharging cylinder pipe is fixedly connected with a vertical discharging connecting pipe communicated with the discharging cylinder pipe; a driving shaft is inserted into the discharging tube, and the two ends of the driving shaft are connected to the end plates through bearings respectively; the left end of the driving shaft extends out of the end plate and is connected with a rotating shaft of the conveying motor through a flat key. According to the anti-blocking structure, the discharging nozzle at the bottom of the drying tank is provided with the dredging barrel which moves up and down in a reciprocating mode, and the problem that the discharging nozzle is blocked can be effectively solved through dredging of the dredging barrel.

Description

Technical Field:

[0001] The utility model relates to the technical field of water reducer conveying devices, and more specifically to an anti-blocking structure on an automatic discharging device for polycarboxylate water reducer. Background Art:

[0002] Polycarboxylate water reducer is a high-performance water reducer and a cement dispersant in the application of cement concrete. It is widely used in projects such as highways, bridges, dams, tunnels, and high-rise buildings. Currently, in the production process of powdered polycarboxylate high-performance water reducer, it is necessary to dry the materials to remove the moisture in the powder. The existing water removal methods mostly involve loading the powdered polycarboxylate water reducer in a drying storage tank, using the stirring mechanism of the drying storage tank to stir the powdered polycarboxylate water reducer, and at the same time drying and removing water by heating based on the heating mechanism of the drying storage tank; generally, a vertical tubular discharge nozzle is provided at the bottom of the drying storage tank. The traditional discharge nozzle generally has a valve structure, but during use, the valve often cannot be closed in time due to the water reducer, and the problem of excessive discharging often occurs. Then, a spiral discharging structure is provided at the lower end of the discharge nozzle to solve the problem of excessive discharging. However, during use, it is found that the discharge nozzle is blocked due to the accumulation of water reducer. Due to the existence of the spiral discharging structure, it is inconvenient to dredge, so it is necessary to optimize and rectify to solve the problem of blockage of the discharge nozzle. Content of the Utility Model:

[0003] The purpose of the utility model is to aim at the deficiencies of the existing technology and provide an anti-blocking structure on an automatic discharging device for polycarboxylate water reducer, which is provided with a dredging cylinder that reciprocates up and down at the discharge nozzle at the bottom of the drying tank, and can effectively solve the problem of blockage of the discharge nozzle.

[0004] An anti-blocking structure on an automatic discharging device for polycarboxylate water reducer includes a horizontal discharge cylinder tube. Above the left side of the discharge cylinder tube, there is a water reducer drying tank. The water reducer drying tank is provided with a conical guide cylinder formed at the lower end. A vertical discharge nozzle is formed on the guide cylinder. The lower end of the discharge nozzle is fixedly connected to the outer wall of the discharge cylinder tube and is communicated with the discharge cylinder tube. End plates are respectively fixedly connected to both ends of the discharge cylinder tube. The outer wall of the lower side of the right end of the discharge cylinder tube is fixedly connected with a vertical discharge connecting pipe that is communicated with the discharge cylinder tube; a driving shaft is inserted into the discharge cylinder tube, and both ends of the driving shaft are respectively connected to the end plates through bearings; the left end of the driving shaft extends out of the end plate and is connected to the rotating shaft of the conveying motor through a flat key; a spiral conveying blade is fixedly connected to the driving shaft inside the discharge cylinder tube, and the conveying motor is fixedly connected to the end plate through a motor support.

[0005] On the end plate on the left side of the discharge barrel tube, there are formed lugs extending upward. There is a vertical eccentric wheel between the lugs and the discharge nozzle. On the right end face of the eccentric wheel, there is formed an annular guide rail groove, and on the left end face, there is formed an eccentric shaft. The eccentric shaft is connected to the lugs through bearings and extends out of the lugs and is fixedly sleeved with a driven pulley. The driven pulley is connected to the driving pulley through a transmission belt, and the driving pulley is fixedly sleeved on the left end of the driving shaft;

[0006] A vertically conical dredging cylinder is inserted into the discharge nozzle. On the side walls of the discharge nozzle on both sides of the dredging cylinder, there are formed vertical guide grooves. A horizontal dredging shaft is inserted into the guide grooves. The dredging cylinder is fixedly sleeved on the dredging shaft. The two ends of the dredging shaft extend out of the guide grooves of the discharge nozzle and are fixedly connected to the sliding sleeves. The sliding sleeves are sleeved on the discharge nozzle and cover the guide grooves on the discharge nozzle; The left end of the guide groove extends out of the sliding sleeve and is inserted into the guide rail groove of the eccentric wheel.

[0007] Preferably, the length of the discharge nozzle at the lower end of the discharge barrel tube is greater than the length of the sliding sleeve. The length of the sliding sleeve is greater than twice the length of the guide groove. The inner diameter of the sliding sleeve is equal to the outer diameter of the discharge nozzle.

[0008] Preferably, the diameter of the dredging shaft is equal to the groove width of the guide groove. The right end of the dredging shaft extends out of the sliding sleeve and is fixedly sleeved with a reinforcement sleeve, and the reinforcement sleeve is fixed on the outer wall of the sliding sleeve;

[0009] The central axis of the dredging cylinder coincides with the central axis of the discharge nozzle. The inner diameter of the discharge nozzle is greater than the maximum outer diameter of the dredging cylinder.

[0010] Preferably, the central axis of the guide rail groove on the eccentric wheel and the central axis of the eccentric shaft are not on the same straight line, and the groove width of the guide rail groove is equal to the diameter of the dredging shaft.

[0011] Preferably, the diameter of the driven pulley on the eccentric shaft is smaller than the diameter of the driving pulley, and the conveying motor adopts a reduction motor.

[0012] Preferably, the motor support is composed of connecting plates at both ends and a connecting cylinder between the connecting plates. An avoidance notch is formed on the outer wall of the upper end of the connecting cylinder, and the transmission belt is inserted into the avoidance notch of the motor support.

[0013] Preferably, the outer diameter of the upper end of the dredging cylinder is smaller than the outer diameter of the lower end of the dredging cylinder, and the upper end of the dredging cylinder is inserted into the guide cylinder of the discharge barrel tube.

[0014] The beneficial effect of the present utility model lies in:

[0015] In this anti-blocking structure, a dredging cylinder that reciprocates up and down is provided at the discharge nozzle at the bottom of the drying tank. Through the dredging of the dredging cylinder, the problem of blockage of the discharge nozzle can be effectively solved. Description of the drawings:

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 This is a top-view structural schematic diagram of the present utility model;

[0018] Figure 3 This is a partial cross-sectional schematic diagram in the front view direction of the present utility model.

[0019] In the figure: 1, discharge cylinder tube; 2, water reducer drying tank; 3, end plate; 4, drive shaft; 5, motor support; 6, conveying motor; 7, conveying blade; 9, eccentric wheel; 10, discharge connection pipe; 11, driven belt pulley; 12, transmission belt; 13, driving belt pulley; 14, dredging shaft; 15, dredging cylinder; 16, sliding sleeve; 17, reinforcing sleeve. Specific implementation manner:

[0020] Example: As shown in Figures 1 to 3 A anti-blocking structure on an automatic discharging device for polycarboxylate water reducer, including a horizontal discharge cylinder tube 1. Above the left side of the discharge cylinder tube 1, there is a water reducer drying tank 2. The water reducer drying tank 2 is provided with a conical diversion cylinder formed at the lower end. The diversion cylinder is formed with a vertical discharge nozzle 21. The lower end of the discharge nozzle 21 is fixedly connected to the outer wall of the discharge cylinder tube 1 and is communicated with the discharge cylinder tube 1. Both ends of the discharge cylinder tube 1 are respectively fixedly connected with end plates 3. On the outer wall of the lower side of the right end of the discharge cylinder tube 1, there is fixedly connected a vertical discharge connection pipe 10 communicated with the discharge cylinder tube 1; A drive shaft 4 is inserted into the discharge cylinder tube 1. Both ends of the drive shaft 4 are respectively connected to the end plates 3 through bearings; The left end of the drive shaft 4 extends out of the end plate 3 and is connected to the rotating shaft of the conveying motor 6 through a flat key; On the drive shaft 4 inside the discharge cylinder tube 1, there is fixedly connected a spiral conveying blade 7. The conveying motor 6 is fixedly connected to the end plate 3 through a motor support 5;

[0021] On the end plate 3 on the left side of the discharge cylinder tube 1, there is formed an upward-extending ear 31. Between the ear 31 and the discharge nozzle 21, there is a vertical eccentric wheel 9. On the right end face of the eccentric wheel 9, there is formed an annular guide groove 91, and on the left end face, there is formed an eccentric shaft 92. The eccentric shaft 92 is connected to the ear 31 through a bearing and extends out of the ear 31 and is inserted and fixedly connected with a driven belt pulley 11. The driven belt pulley 11 is connected to a driving belt pulley 13 through a transmission belt 12. The driving belt pulley 13 is inserted and fixed on the left end of the drive shaft 4;

[0022] A vertically conical dredging tube 15 is inserted into the discharge nozzle 21. Vertical guide grooves 22 are formed on the side walls of the discharge nozzle 21 on both sides of the dredging tube 15. A horizontal dredging shaft 14 is inserted into the guide grooves 22. The dredging tube 15 is inserted and fixed on the dredging shaft 14. Both ends of the dredging shaft 14 extend out of the guide grooves 22 of the discharge nozzle 21 and are inserted and fixed on the sliding sleeve 16. The sliding sleeve 16 is inserted on the discharge nozzle 21 and covers the guide grooves 22 on the discharge nozzle 21. The left end of the guide groove 22 extends out of the sliding sleeve 16 and is inserted into the guide rail groove 91 of the eccentric wheel 9.

[0023] The length of the discharge nozzle 21 at the lower end of the discharge tube 1 is greater than the length of the sliding sleeve 16. The length of the sliding sleeve 16 is greater than twice the length of the guide groove 22. The inner diameter of the inner wall of the sliding sleeve 16 is equal to the outer diameter of the discharge nozzle 21. As Figure 3 shown, the dredging shaft 14 is located at the upper end of the guide groove 22 and is inserted into the middle of the dredging tube 15. The sliding sleeve 16 on the lower side of the dredging shaft 14 covers the guide groove 22. When the sliding sleeve 16 moves downward, the sliding sleeve 16 on the upper side of the dredging shaft 14 will also cover the guide groove 22, preventing the water reducing agent from leaking from the guide groove 22.

[0024] The diameter of the dredging shaft 14 is equal to the groove width of the guide groove 22. The right end of the dredging shaft 14 extends out of the sliding sleeve 16 and is inserted and fixed with a reinforcing sleeve 17. The reinforcing sleeve 17 is fixed on the outer wall of the sliding sleeve 16. The reinforcing sleeve 17 enhances the radial constraint on the dredging shaft 14 and prevents it from rotating.

[0025] The central axis of the dredging tube 15 coincides with the central axis of the discharge nozzle 21. The inner diameter of the inner wall of the discharge nozzle 21 is greater than the maximum outer diameter of the dredging tube 15. When the dredging tube 15 moves up and down, it will not interfere with the inner wall of the discharge nozzle 21.

[0026] The central axis of the guide rail groove 91 on the eccentric wheel 9 and the central axis of the eccentric shaft 92 are not on the same straight line. The groove width of the guide rail groove 91 is equal to the diameter of the dredging shaft 14. The eccentric wheel 9 and the dredging shaft 14 form a cam-link structure.

[0027] The diameter of the driven pulley 11 on the eccentric shaft 92 is smaller than the diameter of the driving pulley 13. The conveying motor 6 is a reduction motor.

[0028] The motor support 5 is composed of connecting plates at both ends and a connecting cylinder between the connecting plates. An avoidance notch 51 is formed on the outer wall of the upper end of the connecting cylinder. The transmission belt 12 is inserted into the avoidance notch 51 of the motor support 5.

[0029] The outer diameter of the upper end of the dredging tube 15 is smaller than the outer diameter of the lower end of the dredging tube 15. The upper end of the dredging tube 15 is inserted into the guide cylinder of the discharge tube 1. There is a gap between the lower end of the dredging tube 15 and the discharge tube 1. When the dredging tube 15 moves downward, the dredging tube 15 will not enter the discharge tube 1.

[0030] Working principle: The present utility model is an anti-blocking structure on an automatic discharging device for polycarboxylate water reducer. The anti-blocking structure is located inside the discharging nozzle 21 at the bottom of the water reducer drying tank 2. A dredging cylinder 15 is provided inside the discharging nozzle 21, and the dredging cylinder 15 is arranged on a dredging shaft 14. An eccentric wheel 9 is connected to the driving shaft 4 for driving the discharge of the water reducer through a belt drive. The rotation of the eccentric wheel 9 can drive the dredging shaft 14 to reciprocate up and down in the guiding groove 22 of the discharging nozzle 21;

[0031] Furthermore, the dredging shaft 14 can drive the dredging cylinder 15 to reciprocate up and down inside the discharging nozzle 21, thereby avoiding the blockage of the discharging nozzle 21 by the powdery polycarboxylate water reducer.

[0032] The described embodiments are used to illustrate the present utility model by way of example, rather than to limit the present utility model. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the scope of the patent protection of the present utility model shall be as set forth in the claims of the present utility model.

Claims

1. An anti-blocking structure on an automatic discharging device for a polycarboxylate water reducer, comprising a horizontal discharging cylinder tube (1). Above the left side of the discharging cylinder tube (1), there is a water reducer drying tank (2). The water reducer drying tank (2) is provided with a conical diversion cylinder formed at the lower end. The diversion cylinder is formed with a vertical discharging nozzle (21). The lower end of the discharging nozzle (21) is fixedly connected to the outer wall of the discharging cylinder tube (1) and is communicated with the discharging cylinder tube (1). It is characterized in that: Both ends of the discharge barrel tube (1) are fixedly connected with end plates (3). An outlet connecting pipe (10) which is vertical and communicates with the discharge barrel tube (1) is fixedly connected to the outer wall on the lower side of the right end of the discharge barrel tube (1); A driving shaft (4) is inserted into the discharge barrel tube (1), and both ends of the driving shaft (4) are connected to the end plates (3) through bearings; The left end of the driving shaft (4) extends out of the end plate (3) and is connected to the rotating shaft of the conveying motor (6) through a flat key; A spiral conveying blade (7) is fixedly connected to the driving shaft (4) inside the discharge barrel tube (1), and the conveying motor (6) is fixedly connected to the end plate (3) through a motor support (5); An upward extending ear (31) is formed on the end plate (3) on the left side of the discharge barrel tube (1). A vertical eccentric wheel (9) is arranged between the ear (31) and the discharge nozzle (21). An annular guide groove (91) is formed on the right end face of the eccentric wheel (9), and an eccentric shaft (92) is formed on the left end face. The eccentric shaft (92) is connected to the ear (31) through a bearing and extends out of the ear (31) and is inserted and fixedly connected with a driven pulley (11). The driven pulley (11) is connected to a driving pulley (13) through a transmission belt (12), and the driving pulley (13) is inserted and fixed on the left end of the driving shaft (4); A vertically conical dredging tube (15) is inserted into the discharge nozzle (21). Vertical guide grooves (22) are formed on the side walls of the discharge nozzle (21) on both sides of the dredging tube (15). A horizontal dredging shaft (14) is inserted into the guide grooves (22). The dredging tube (15) is inserted and fixed on the dredging shaft (14). Both ends of the dredging shaft (14) extend out of the guide grooves (22) of the discharge nozzle (21) and are inserted and fixed on a sliding sleeve (16). The sliding sleeve (16) is inserted on the discharge nozzle (21) and covers the guide grooves (22) on the discharge nozzle (21); The left end of the guide groove (22) extends out of the sliding sleeve (16) and is inserted into the guide groove (91) of the eccentric wheel (9).

2. The anti-blocking structure on the automatic discharging device of a polycarboxylate water reducing agent according to claim 1, characterized in that: The length of the discharge nozzle (21) at the lower end of the discharge barrel tube (1) is greater than the length of the sliding sleeve (16). The length of the sliding sleeve (16) is greater than twice the length of the guide groove (22). The inner diameter of the inner wall of the sliding sleeve (16) is equal to the outer diameter of the discharge nozzle (21).

3. The anti-blocking structure on the automatic discharging device of a polycarboxylate water reducer according to claim 2, characterized in that: The diameter of the dredging shaft (14) is equal to the groove width of the guide groove (22). The right end of the dredging shaft (14) extends out of the sliding sleeve (16) and is inserted and fixed with a reinforcing sleeve (17). The reinforcing sleeve (17) is fixed on the outer wall of the sliding sleeve (16); The central axis of the dredging tube (15) coincides with the central axis of the discharge nozzle (21). The inner diameter of the inner wall of the discharge nozzle (21) is greater than the maximum outer diameter of the dredging tube (15).

4. The anti-blocking structure on the automatic discharging device of a polycarboxylate water reducer according to claim 1, characterized in that: The central axes of the guide groove (91) on the eccentric wheel (9) and the eccentric shaft (92) are not on the same straight line. The groove width of the guide groove (91) is equal to the diameter of the dredging shaft (14).

5. The anti-blocking structure on the automatic discharging device of a polycarboxylate water reducing agent according to claim 4, characterized in that: The diameter of the driven pulley (11) on the eccentric shaft (92) is smaller than the diameter of the driving pulley (13). The conveying motor (6) adopts a reduction motor.

6. The anti-blocking structure on the automatic discharging device of a polycarboxylate water reducer according to claim 4, characterized in that: The described motor support (5) is composed of connecting plates at both ends and a connecting cylinder between the connecting plates. An avoidance notch (51) is formed on the outer wall of the upper end of the connecting cylinder, and the transmission belt (12) is inserted into the avoidance notch (51) of the motor support (5).

7. The anti-blocking structure on the automatic discharging device of a polycarboxylate water reducer according to claim 1, characterized in that: The diameter of the outer wall of the upper end of the dredging cylinder (15) is smaller than the diameter of the outer wall of the lower end of the dredging cylinder (15), and the upper end of the dredging cylinder (15) is inserted into the diversion cylinder of the discharge cylinder tube (1).

Images