Weighing and conveying device for water reducing agent raw materials

Abstract

The utility model discloses a weighing and conveying device for water reducing agent raw materials, which belongs to the technical field of water reducing agent processing equipment and comprises a base, a stand column, a weighing mechanism, a conveying mechanism and a cleaning mechanism, the stand column is mounted on one side of the top of the base, the weighing mechanism is fixed on the outer wall of the stand column through bolts, and the conveying mechanism is fixed on the outer wall of the stand column through bolts. The conveying mechanism is fixed to the top of the base through bolts, and the cleaning mechanism is installed on the conveying mechanism in a matched mode. According to the utility model, cleaning mechanisms are additionally arranged on the weighing structure and the conveying structure of the water reducing agent, and the structure consisting of the first gear, the second gear, the volute spring and the knocking ball can effectively knock and vibrate the conveying pipeline, so that powder particles adhered to the inner wall of the pipeline are shaken off and sent out of the pipeline; the cam disc and the push-pull cover can accelerate discharging of the weighing hopper when the weighing mechanism discharges materials, it can be guaranteed that the weighed water reducing agent is conveyed into the reaction kettle to be processed in a high-precision mode, and it is guaranteed that the composition proportion of the water reducing agent is not affected.

Description

Technical Field

[0001] This utility model relates to the technical field of water-reducing agent processing equipment, and in particular to a weighing and conveying device for water-reducing agent raw materials. 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, and enhance the fluidity of the concrete mix; or they reduce cement usage per unit area, thus saving cement.

[0003] Chinese utility model patent CN216686618U discloses a conveying device for water-reducing agent production, which includes a support frame, a transverse conveying component mounted on the support frame, and a longitudinal conveying component mounted on the upper end of the transverse conveying component. The transverse conveying component includes a horizontally arranged conveying pipe and a spiral guiding component disposed within the conveying pipe. The outlet end of the longitudinal conveying component is disposed at either end of the conveying pipe and is connected to the interior of the conveying pipe. The other end of the conveying pipe is connected to a discharge uniform distribution component. A feed uniform distribution component is disposed inside the longitudinal conveying component. This utility model provides a conveying device for water-reducing agent production, achieving uniform and anti-clogging conveying of the water-reducing agent throughout the entire conveying device.

[0004] The aforementioned patent also has drawbacks in its use. For example, the powder raw material for processing water-reducing agents has a small particle size, which will remain between the conveying pipe and the spiral guide assembly during transmission. This not only affects the accurate feeding of the water-reducing agent raw material, but also clogs the pipe and increases maintenance costs. Therefore, a weighing and conveying device for water-reducing agent raw materials is needed to solve this problem. Utility Model Content

[0005] The main purpose of this invention is to provide a weighing and conveying device for water-reducing agent raw materials, which solves the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] A weighing and conveying device for water-reducing agent raw materials includes a base, a column, a weighing mechanism, a conveying mechanism, and a cleaning mechanism. The column is installed on one side of the top of the base, the weighing mechanism is fixed to the outer wall of the column by bolts, the conveying mechanism is fixed to the top of the base by bolts, and the cleaning mechanism is installed on the conveying mechanism.

[0008] The weighing mechanism includes a weighing device, a weighing hopper, a push-pull cover, and a support frame;

[0009] The conveying mechanism includes a feeding cylinder, a screw shaft, and a receiving hopper;

[0010] The cleaning mechanism includes a first gear, a second gear, a cam disc, a spiral spring, a connecting rod, and a striking ball.

[0011] Furthermore, the weighing device is connected to an external display screen, the weighing hopper is in movable contact with the inner wall of the support frame, and the support frame is fixedly connected to the internal pressure sensor of the weighing device via a rod.

[0012] Furthermore, the push-pull cover is slidably connected to the bottom of the weighing hopper, and a discharge hole adapted to the bottom of the weighing hopper is passed through the inner wall of the push-pull cover. Limiting plates are formed on both sides of the outer wall of the push-pull cover, and an electric push rod is fixed on the outer side of the bottom of the weighing hopper. The output end of the electric push rod is connected to the extension structure of the outer wall of the push-pull cover.

[0013] Furthermore, two circular frames are symmetrically clamped on the feeding cylinder, and a support frame is integrally welded to the bottom of the circular frame. The spiral shaft is rotatably disposed in the feeding cylinder, and a motor is installed at one end of the drive shaft at the center of the spiral shaft.

[0014] Furthermore, both the second gear and the cam disk are nested and fixed on the drive shaft. There are two sets of the first gear, both of which mesh with the second gear. The first gear has a full tooth structure, and the second gear has a half tooth structure.

[0015] Furthermore, a rotating shaft is interference-fitted to the center of the first gear, and a coil spring fixing plate is rotatably mounted on the rotating shaft. A worm spring is compressed inside the worm spring fixing plate. One end of the worm spring is connected to the rotating shaft, and the other end of the worm spring is connected to the inner wall of the worm spring fixing plate.

[0016] Furthermore, the bottom of the cam disk is detachably mounted to the drive shaft, the connecting rod and the striking ball are threadedly connected, and the connecting rod is threadedly connected to the inner wall of the rotating shaft.

[0017] The beneficial technical effects of this utility model are as follows:

[0018] This invention adds cleaning mechanisms to both the weighing and conveying structures of the water-reducing agent. The structure consisting of a first gear, a second gear, a spiral spring, and a striking ball can effectively vibrate the conveying pipe, shaking off powder particles adhering to the inner wall of the pipe and sending them out of the pipe, keeping the pipe clean. The cam plate and push-pull cover can accelerate the discharge of the weighing hopper during the weighing process, maintaining accurate feeding. This ensures that the weighed water-reducing agent is delivered to the reaction vessel for processing with high precision, ensuring that the composition ratio of the water-reducing agent is not affected. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a preferred embodiment of a weighing and conveying device for water-reducing agent raw materials according to the present invention;

[0020] Figure 2 This is a schematic diagram of a preferred embodiment of a weighing and conveying device for water-reducing agent raw materials according to the present invention, after removing the weighing hopper.

[0021] Figure 3 This is a schematic diagram of the structure after removing the column and weighing hopper in a preferred embodiment of a weighing and conveying device for water-reducing agent raw materials according to the present invention;

[0022] Figure 4 In a preferred embodiment of the weighing and conveying device for water-reducing agent raw materials according to the present invention, Figure 2 Enlarged view of point A in the middle.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. Base; 2. Column; 3. Feeding cylinder; 4. Weighing hopper; 5. Weighing device; 6. Receiving hopper; 7. Electric push rod; 8. Support frame; 9. First gear; 10. Second gear; 11. Motor; 12. Cam plate; 13. Discharge hole; 14. Limit plate; 15. Drive shaft; 16. Coil spring fixing plate; 17. Snail spring; 18. Rotating shaft; 19. Striking ball; 20. Connecting rod; 21. Support frame; 22. Screw shaft; 23. Push-pull cover. Detailed Implementation

[0025] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0026] like Figures 1-3 As shown in the figure, this embodiment provides a weighing and conveying device for water-reducing agent raw materials, including a base 1, a column 2, a weighing mechanism, a conveying mechanism, and a cleaning mechanism. The column 2 is installed on one side of the top of the base 1. The weighing mechanism is fixed to the outer wall of the column 2 by bolts. The conveying mechanism is fixed to the top of the base 1 by bolts. The cleaning mechanism is installed on the conveying mechanism. The weighing mechanism includes a weighing device 5, a weighing hopper 4, a push-pull cover 23, and a support frame 8. The conveying mechanism includes a feeding cylinder 3, a screw shaft 22, and a receiving hopper 6. The cleaning mechanism includes a first gear 9, a second gear 10, a cam disk 12, a worm spring 17, a connecting rod 20, and a striking ball 19.

[0027] like Figure 1 and Figure 2As shown, the weighing device 5 is connected to an external display screen. The weighing hopper 4 is in movable contact with the inner wall of the support frame 8. The support frame 8 is fixedly connected to the internal pressure sensor of the weighing device 5 through a rod. The weighing device 5 uses the pressure sensor to weigh the raw materials entering the hopper. The weighing is manually controlled by watching the external display screen.

[0028] like Figure 1 and Figure 2 As shown, the push-pull cover 23 is slidably connected to the bottom of the weighing hopper 4. The inner wall of the push-pull cover 23 has a discharge hole 13 that matches the bottom of the weighing hopper 4. Limiting plates 14 are formed on both sides of the outer wall of the push-pull cover 23. An electric push rod 7 is fixed on the outer side of the bottom of the weighing hopper 4. The output end of the electric push rod 7 is connected to the extension structure of the outer wall of the push-pull cover 23. The electric push rod 7 moves the push-pull cover 23 back and forth to move in and out of the weighing hopper 4 to realize material discharge and weighing. When the discharge hole 13 enters, it is for material discharge. When the discharge hole 13 moves out, it is for weighing. The limiting plates 14 on both sides can abut against the outer wall of the weighing hopper 4 to limit the electric push rod 7.

[0029] like Figures 1-3 Two circular frames are symmetrically installed on the feeding cylinder 3. A support frame 21 is integrally welded to the bottom of the circular frame. The spiral shaft 22 is rotatably set in the feeding cylinder 3. A motor 11 is installed on one end of the drive shaft 15 at the center of the spiral shaft 22. The motor 11 is a servo motor 11, which outputs low speed and high torque for feeding.

[0030] like Figure 2 and Figure 4 As shown, the second gear 10 and the cam disk 12 are both nested and fixed on the drive shaft 15. There are two sets of first gears 9, both of which mesh with the second gear 10. The first gear 9 has a full tooth structure, and the second gear 10 has a half tooth structure. The circumferentially symmetrical half tooth structure of the second gear 10 can be cyclically meshed with the first gears 9 on both sides, realizing the forward and reverse rotation of the two sets of first gears 9, thereby driving the rotating shaft 18 to rotate forward and reverse, and thus driving the connecting rod 20 and the striking ball 19 to separate the outer wall of the feeding cylinder 3.

[0031] like Figure 2 and Figure 4 As shown, a rotating shaft 18 is interference-fitted to the center of the first gear 9. A coil spring fixing plate 16 is also rotatably mounted on the rotating shaft 18. A worm spring 17 is compressed inside the worm spring fixing plate 16. One end of the worm spring 17 is connected to the rotating shaft 18, and the other end of the worm spring 17 is connected to the inner wall of the worm spring fixing plate 16. When the rotating shaft 18 rotates, it coils the worm spring 17 inside, accumulating potential energy. When the rotating shaft 18 loses its meshing force, it releases the potential energy. The connecting rod 20 carries the plastic striking ball 19 to strike the outer wall of the feeding cylinder 3. During the feeding process of the motor 11, the striking is maintained in a cycle, which is beneficial to the conveying of the internal raw materials. The striking force is moderate, avoiding damage to the conveying pipe.

[0032] like Figures 2-4 As shown, the bottom of the cam disk 12 is detachably installed with the drive shaft 15. The connecting rod 20 and the striking ball 19 are threadedly connected. The connecting rod 20 is threadedly connected to the inner wall of the rotating shaft 18. The threaded connection structure makes it easy to replace the damaged striking ball 19 and connecting rod 20. The cam disk 12 rotates with the motor 11 and rotates in the groove in the inner wall of the base 1. When the push-pull cover 23 is moved out, the top of the cam disk 12 can lift the push-pull cover 23, thereby lifting the weighing hopper 4 and causing it to move up and down slightly in the inner wall of the support frame 8 to achieve the purpose of shaking.

[0033] The working principle of this device is as follows: When the device is in use, the external raw material feeding device feeds the material into the weighing hopper 4. During feeding, the electric push rod 7 moves the push-pull cover 23 to close the bottom of the weighing hopper 4. The weighing device 5 is connected to an external display. When the manual observer sees the measured value, feeding stops. The electric push rod 7 moves the push-pull cover 23 out of the weighing hopper 4. The discharge hole 13 on the push-pull cover 23 is connected to the inside of the weighing hopper 4. The raw material falls into the receiving hopper 6. At the same time, the motor 11 drives the screw shaft 22 to spirally discharge the raw material out of the feeding cylinder 3.

[0034] When the push-pull cover 23 is moved out, it is located directly above the cam disk 12. When the motor 11 drives the cam disk 12 to rotate at low speed, it can push the cam disk 12 upward, so that the weighing hopper 4 moves up and down slightly inside the support frame 8, generating a vibration, accelerating the fall of the internal raw materials, and preventing them from sticking to the hopper wall.

[0035] In addition, during material feeding inside the feeding cylinder 3, the residual teeth on both sides of the outer wall of the second gear 10 will periodically mesh with the first gear 9 on both sides, providing periodic driving force. The first gear 9 drives the rotating shaft 18 to rotate in the coil spring fixing plate 16, and at the same time drives the worm spring 17 to squeeze. The connecting rod 20 and the striking ball 19 are rotated away from the outer wall of the feeding cylinder 3. When the second gear 10 loses its meshing force with the first gear 9, the worm spring 17 returns to its original position, and the striking ball 19 strikes the outer wall of the feeding cylinder 3. This can prevent the raw material from adhering to the inner wall and causing blockage when the feeding cylinder 3 is continuously feeding, which is conducive to the accurate delivery of raw materials.

[0036] The above are merely further embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed by this utility model, based on the technical solution and concept of this utility model, shall fall within the protection scope of this utility model.

Claims

1. A weighing and conveying device for water reducing agent raw materials, comprising a base (1), a stand column (2), a weighing mechanism, a conveying mechanism and a cleaning mechanism, characterized in that: The stand (2) is installed on one side of the top of the base (1), the weighing mechanism is fixed on the outer wall of the stand (2) by bolts, the conveying mechanism is fixed on the top of the base (1) by bolts, and the cleaning mechanism is installed on the conveying mechanism in cooperation; The weighing mechanism comprises a weighing device (5), a weighing hopper (4), a push-pull cover (23) and a support frame (8); The conveying mechanism comprises a feeding cylinder (3), a spiral shaft (22) and a receiving hopper (6); The cleaning mechanism comprises a first gear (9), a second gear (10), a cam disc (12), a volute spring (17), a connecting rod (20) and a knocking ball (19).

2. The apparatus for weighing and conveying raw materials of water reducing agent according to claim 1, characterized in that: The weighing device (5) is provided with a display screen, the weighing hopper (4) is in movable contact with the inner wall of the support frame (8), and the support frame (8) is fixedly connected with the internal pressure sensor of the weighing device (5) through a rod body.

3. A device for weighing and conveying raw materials for water reducing agent according to claim 2, characterized in that: The push-pull cover (23) is in sliding connection with the bottom of the weighing hopper (4), a discharging hole (13) matched with the bottom of the weighing hopper (4) is formed in the inner wall of the push-pull cover (23), limit plates (14) are formed on the two sides of the outer wall of the push-pull cover (23), an electric push rod (7) is fixed to the outside of the bottom of the weighing hopper (4), and the output end of the electric push rod (7) is connected with the extension structure of the outer wall of the push-pull cover (23).

4. The apparatus for weighing and conveying raw materials of water reducing agent according to claim 3, characterized in that: Two circular ring frames are symmetrically arranged on the feeding cylinder (3) and are provided with support frames (21) integrally welded at the bottom, the spiral shaft (22) is rotatably arranged in the feeding cylinder (3), and a driving shaft (15) at the center of the spiral shaft (22) is provided with a motor (11) in cooperation at one end outside.

5. A device for weighing and conveying raw materials for water reducing agent according to claim 4, characterized in that: The second gear (10) and the cam disc (12) are both fixedly arranged on the driving shaft (15), the first gear (9) has two groups and is in meshing connection with the second gear (10), the first gear (9) is a full-tooth structure, and the second gear (10) is a half-tooth structure.

6. A device for weighing and conveying raw materials for water reducing agent according to claim 5, characterized in that: The first gear (9) is provided with a rotating shaft (18) in interference fit at the center, a coil spring fixing disc (16) is further rotatably arranged on the rotating shaft (18), the coil spring fixing disc (16) is extruded with a volute spring (17) inside, one end of the volute spring (17) is connected to the rotating shaft (18), and the other end of the volute spring (17) is connected to the inner wall of the coil spring fixing disc (16).

7. A device for weighing and conveying raw materials for water reducing agent according to claim 6, characterized in that: The cam disc (12) is detachably installed at the bottom of the driving shaft (15), the connecting rod (20) and the knocking ball (19) are in threaded connection, and the connecting rod (20) is in threaded connection with the inner wall of the rotating shaft (18).

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