Spiral propulsion raw material storage tank bottom discharge mechanism

Abstract

This utility model discloses a bottom discharge mechanism for a spiral-propelled raw material storage tank, including a storage tank, a discharge pipe fixedly installed at the bottom and communicating with its own inner cavity, a spiral pusher rotatably installed in the inner cavity of the discharge pipe, and a wall scraper, disposed in the inner cavity of the storage tank, which can scrape off the emulsion adhering to the inner wall of the storage tank. Through the combined use of the above structures, emulsion agglomeration on the inner wall of the storage tank can be minimized, reducing the amount of residual emulsion mixed with the new batch, reducing errors in the formulation ratio, and ensuring the functionality and stability of the emulsion.

Description

Technical Field

[0001] This utility model relates to the field of building coating emulsion production technology, and in particular to a spiral propulsion raw material storage tank bottom discharge mechanism. Background Technology

[0002] The bottom discharge mechanism of the spiral propulsion raw material storage tank is a type of equipment commonly used for conveying powdery, granular, or viscous materials. Its core function is to stably and controllably discharge materials from the bottom of the storage tank through the rotation of the spiral blades. It is commonly used in the production process of building coating emulsions, especially in the conveying process of viscous materials.

[0003] Currently, before the emulsion for construction coatings is prepared and packaged, it needs to be stored in storage tanks. The tanks are aligned, sealed, and insulated to prevent contamination or spoilage from contact with air after production. Due to the high viscosity of the emulsion, a screw propeller is needed to assist in the discharge of the emulsion from the storage tank, thereby increasing the discharge rate. However, due to the high viscosity, the emulsion easily adheres to the inner wall of the storage tank. Long-term retention may lead to stratification, crusting, or spoilage due to oxidation, moisture evaporation, or microbial growth. When storing a new batch of emulsion, the residual old emulsion mixes with the new batch, which can easily change the product formula ratio and affect stability or functionality. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a spiral propulsion bottom discharge mechanism for raw material storage tanks, aiming to improve the problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The bottom discharge mechanism of the spiral propulsion raw material storage tank includes:

[0007] The storage tank has a discharge pipe fixedly installed at the bottom that communicates with its own inner cavity, and a spiral pusher is rotatably installed in the inner cavity of the discharge pipe.

[0008] The wall scraper is installed inside the storage tank. It can scrape off the emulsion adhering to the inner wall of the storage tank and prevent the emulsion from clumping.

[0009] As a further description of the above technical solution:

[0010] Both ends of the spiral push rod are fixedly mounted with rotating shafts, and the outer walls of the two rotating shafts are fixedly mounted with sealed bearings. The outer walls of the two sealed bearings are fixedly connected to the inner walls of the discharge pipe and the storage tank respectively through connecting plates. The outer wall of the discharge pipe is fixedly mounted with a drive motor. Tensioning wheels are fixedly mounted at one end of the rotating shaft at the bottom of the spiral push rod and at the power output end of the drive motor. The two tensioning wheels are rotatably connected by a tensioning belt. A sealing box is provided in the inner cavity of the discharge pipe, and the sealing box is sleeved on the outside of the tensioning wheels.

[0011] As a further description of the above technical solution:

[0012] The wall scraping component includes two support frames and a scraper. Two support frames are provided in the inner cavity of the storage tank. Multiple mounting plates are arranged in a ring on the two support frames. The two ends of the multiple mounting plates are fixedly connected to the outer walls of the two support frames respectively. A sliding groove is opened on one side of the multiple mounting plates, and the scraper is slidably installed in the inner cavity of the sliding groove.

[0013] As a further description of the above technical solution:

[0014] Multiple sliding grooves have compression springs fixedly installed on the inner wall of their opening ends, with one end of the compression spring fixedly connected to one side of the scraper.

[0015] As a further description of the above technical solution:

[0016] The scraper is made of rubber material, and the end of the scraper near the inner wall of the storage tank is set with a conical structure.

[0017] As a further description of the above technical solution:

[0018] A hydraulic cylinder is fixedly installed on the top of the storage tank. The power output end of the hydraulic cylinder is rotatably connected to the top of the support frame located directly above the multiple mounting plates. A drive column is fixedly installed at the bottom of the support frame located directly below the multiple mounting plates. The top of the rotating shaft located at the top of the spiral push rod has an insertion hole that matches the drive column.

[0019] This utility model has the following beneficial effects:

[0020] This invention uses a wall scraper to remove emulsion adhering to the inner wall of the storage tank, reducing emulsion residue and the amount of emulsion clumping on the inner wall of the storage tank. When storing a new batch of emulsion, it reduces the amount of residual emulsion mixed with the new batch, minimizes errors in the formula ratio, and ensures the functionality and stability of the emulsion. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2This is an assembly drawing of the storage tank and the spiral pusher rod of this utility model;

[0023] Figure 3 This is an assembly drawing of the support frame and scraper of this utility model;

[0024] Figure 4 This is an assembly drawing of the scraper and mounting plate of this utility model;

[0025] Figure 5 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0026] Figure 6 This utility model Figure 2 Enlarged view of the structure at point B.

[0027] Legend:

[0028] 1. Storage tank; 2. Hydraulic cylinder; 3. Discharge pipe; 4. Support frame; 5. Mounting plate; 6. Spiral push rod; 7. Scraper; 8. Compression spring; 9. Rotary shaft; 10. Drive column; 11. Sealing box. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1-6 One embodiment of this utility model is a bottom discharge mechanism for a spiral propulsion raw material storage tank, comprising: a storage tank 1 and a wall scraper.

[0031] A discharge pipe 3 connected to the inner cavity of the storage tank 1 is fixedly installed at the bottom. A spiral push rod 6 is rotatably installed in the inner cavity of the discharge pipe 3. A rotating shaft 9 is fixedly installed at both ends of the spiral push rod 6. Sealed bearings are fixedly installed on the outer walls of the two rotating shafts 9. The outer walls of the two sealed bearings are fixedly connected to the discharge pipe 3 and the inner wall of the storage tank 1 respectively through connecting plates. The spiral push rod 6 can be supported by the cooperation of the sealed bearings and the connecting plates, and the spiral push rod 6 can rotate around the two rotating shafts 9 as the rotation center.

[0032] A drive motor is fixedly installed on the outer wall of the discharge pipe 3. Tensioning wheels are fixedly installed at one end of the rotating shaft 9 at the bottom of the spiral push rod 6 and at the power output end of the drive motor. The two tensioning wheels are rotatably connected by a tension belt. A sealing box 11 is provided in the inner cavity of the discharge pipe 3. The sealing box 11 is sleeved on the outside of the tensioning wheel. Two through holes adapted to the tension belt are opened on the outer wall of the storage tank 1. Two sealing tubes are sleeved on the outer wall of the tension belt. One end of the two sealing tubes is fixedly connected to the outer wall of the sealing box 11, and the other end passes through the hole and extends to the outside of the storage tank 1. At the same time, the outer walls of the two sealing tubes are respectively connected to the inner walls of the two through holes. While supporting the sealing box 11, it can also prevent the emulsion from adhering to the outside of the tensioning wheel and the tension belt and affecting the rotation of the tensioning wheel. At the same time, it can prevent the emulsion from leaking from the through holes to the outside of the storage tank 1, thus improving the sealing performance of the storage tank 1.

[0033] An electromagnetic valve is fixedly installed in the inner cavity of the discharge pipe 3. The electromagnetic valve is located between the spiral push rod 6 and the outlet end of the discharge pipe 3. When the emulsion inside the storage tank 1 is discharged, the electromagnetic valve is opened first, and then the drive motor is started. At this time, under the action of the tension belt, the two tensioning wheels rotate simultaneously, which makes the spiral push rod 6 rotate rapidly along its own axis. At this time, the emulsion fills the gap between the spiral blades under the action of gravity. When the spiral push rod 6 rotates, the friction between the blades and the material pushes the material to move axially, and finally the emulsion passes through the electromagnetic valve and is discharged from the discharge end of the discharge pipe 3.

[0034] Once the emulsion has been completely discharged from the inner cavity of storage tank 1, the solenoid valve is closed to seal the discharge end of discharge pipe 3, preventing a new batch of emulsion from entering the storage tank 1 and being discharged from the discharge end of discharge pipe 3.

[0035] The storage tank 1 has two support frames 4 inside, and multiple mounting plates 5 are arranged in a ring on the two support frames 4. The two ends of the multiple mounting plates 5 are fixedly connected to the outer walls of the two support frames 4 respectively. The two support frames 4 are both set as "cross-shaped" structures, which can not only connect to the ends of the multiple mounting plates 5, but also increase the storage area of ​​the storage tank 1 for emulsion storage.

[0036] A sliding groove is provided on one side of each of the multiple mounting plates 5. A scraper 7 is slidably installed in the inner cavity of the sliding groove. A hydraulic cylinder 2 is fixedly installed on the top of the storage tank 1. The power output end of the hydraulic cylinder 2 is rotatably connected to the top of the support frame 4 located directly above the multiple mounting plates 5. A drive column 10 is fixedly installed at the bottom of the support frame 4 located directly below the multiple mounting plates 5. The top of the rotating shaft 9 located at the top of the spiral push rod 6 has an insertion hole that matches the drive column 10. In the early stage, when the spiral push rod 6 discharges the emulsion through the discharge pipe 3, the drive column 10 is located directly above the insertion hole under the action of the hydraulic cylinder 2. When the emulsion discharge is in the later stage (excluding the emulsion adhering to the inner wall of the storage tank 1, the remaining emulsion has been discharged from the inside of the storage tank 1), the hydraulic cylinder is activated. Cylinder 2, causing the power output end of hydraulic cylinder 2 to move downward until the end of drive column 10 away from support frame 4 is inserted into the through hole and fits against the through hole away from its own inner wall. The power of the spiral push rod 6 along its own rotation is transmitted to support frame 4 through drive column 10, causing support frame 4 to rotate synchronously with spiral push rod 6 around the central axis of spiral push rod 6. At this time, scraper 7 moves towards the inner wall of storage tank 1 under the action of centrifugal force until the end of scraper 7 away from the inner cavity of sliding groove fits tightly against the inner wall of storage tank 1. At the same time, under the continuous rotation of support frame 4, the emulsion adhering to the inner wall of storage tank 1 can be scraped off. The scraped emulsion falls into the inner cavity of discharge pipe 3 under the action of gravity, and then is discharged through the discharge end of discharge pipe 3 through the transmission of spiral push rod 6.

[0037] Both the drive column 10 and the insertion hole are designed with a "cross" structure, which allows the drive column 10 to be embedded in the inner cavity of the insertion hole, preventing the drive column 10 from slipping against the inner wall of the insertion hole. This helps to ensure that the support frame 4 and the spiral push rod 6 rotate synchronously.

[0038] Under the action of centrifugal force, the emulsion adhering to the outer wall of the support frame 4, mounting plate 5, scraper 7 and spiral push rod 6 can be thrown towards the inner wall of the storage tank 1, and then the scraper 7 can scrape off the emulsion adhering to the inner wall of the storage tank 1.

[0039] Multiple sliding grooves have compression springs 8 fixedly installed on the inner wall of their ends away from their openings. One end of the compression spring 8 is fixedly connected to one side of the scraper 7. When the scraper 7 moves towards the inner wall of the storage tank 1 under the action of centrifugal force, the end of the compression spring 8 connected to the scraper 7 moves together with the scraper 7, thereby extending the compression spring 8. When the power output end of the hydraulic cylinder 2 moves upward until the drive column 10 is completely disengaged from the inside of the through hole, the support frame 4 stops rotating. The compression spring 8 converts the elastic potential energy into the kinetic energy for the scraper 7 to reset, causing the end of the scraper 7 away from the inner wall of the sliding groove to separate from the inner wall of the storage tank 1. This reduces the resistance of the spiral push rod 6 itself, prevents the drive motor from being damaged after a long period of operation due to a large load, and protects the drive motor. At the same time, it increases the speed of the spiral push rod 6 and accelerates the discharge of the emulsion.

[0040] The scraper 7 is made of rubber material. When the scraper 7 is in soft contact with the inner wall of the storage tank 1, it prevents the inner wall of the storage tank 1 from being damaged when the scraper 7 rotates, and protects the inner wall of the storage tank 1.

[0041] The end of the scraper 7 near the inner wall of the storage tank 1 is set with a conical structure, which reduces the contact area between the end of the scraper 7 away from the sliding groove and the inner wall of the storage tank 1, thereby reducing the friction between the scraper 7 and the inner wall of the storage tank 1. This further prevents the drive motor from being damaged after long-term operation due to excessive load, thus protecting the drive motor. At the same time, it increases the rotation speed of the spiral push rod 6 and accelerates the discharge of the emulsion.

[0042] The support frame 4, scraper 7, mounting plate 5, and drive column 10 constitute the wall scraping component. The wall scraping component can scrape off the emulsion adhering to the inner wall of the storage tank 1, preventing the emulsion adhering to the inner wall of the storage tank 1 from drying out. After the emulsion is discharged, it prevents a large amount of emulsion from adhering to the inner wall of the storage tank 1. When storing a new batch of emulsion, it reduces the amount of residual old emulsion mixed with the new batch, making it less likely to change the product formula ratio and reducing the impact on the functionality or stability of the emulsion.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bottom discharge mechanism for a spiral propulsion raw material storage tank, characterized in that, include: The storage tank (1) has a discharge pipe (3) fixedly installed at the bottom that communicates with its own inner cavity, and a spiral push rod (6) is rotatably installed in the inner cavity of the discharge pipe (3). The wall scraper is installed in the inner cavity of the storage tank (1). The wall scraper can scrape off the emulsion adhering to the inner wall of the storage tank (1) to prevent the emulsion adhering to the inner wall of the storage tank (1) from clumping.

2. The bottom discharge mechanism of the spiral propulsion raw material storage tank according to claim 1, characterized in that: Both ends of the spiral push rod (6) are fixedly installed with rotating shafts (9). The outer walls of the two rotating shafts (9) are fixedly installed with sealed bearings. The outer walls of the two sealed bearings are fixedly connected to the inner walls of the discharge pipe (3) and the storage tank (1) respectively through connecting plates. The outer wall of the discharge pipe (3) is fixedly installed with a drive motor. Tensioning wheels are fixedly installed at one end of the rotating shaft (9) at the bottom of the spiral push rod (6) and at the power output end of the drive motor. The two tensioning wheels are rotatably connected by a tensioning belt. A sealing box (11) is provided in the inner cavity of the discharge pipe (3). The sealing box (11) is sleeved on the outside of the tensioning wheel.

3. The bottom discharge mechanism of the spiral propulsion raw material storage tank according to claim 1, characterized in that: The wall scraping component includes two support frames (4) and a scraper (7). The storage tank (1) has two support frames (4) in its inner cavity. The two support frames (4) are arranged in a ring with multiple mounting plates (5). The two ends of the multiple mounting plates (5) are fixedly connected to the outer walls of the two support frames (4) respectively. A sliding groove is opened on one side of the multiple mounting plates (5). The scraper (7) is slidably installed in the inner cavity of the sliding groove.

4. The bottom discharge mechanism of the spiral propulsion raw material storage tank according to claim 3, characterized in that: Multiple sliding grooves are fixedly installed with compression springs (8) on the inner wall away from their own opening ends. One end of the compression spring (8) is fixedly connected to one side of the scraper (7).

5. The bottom discharge mechanism of the spiral propulsion raw material storage tank according to claim 4, characterized in that: The scraper (7) is made of rubber material, and the end of the scraper (7) near the inner wall of the storage tank (1) is set as a conical structure.

6. The bottom discharge mechanism of the spiral propulsion raw material storage tank according to claim 3, characterized in that: A hydraulic cylinder (2) is fixedly installed on the top of the storage tank (1). The power output end of the hydraulic cylinder (2) is rotatably connected to the top of the support frame (4) located directly above the multiple mounting plates (5). A drive column (10) is fixedly installed at the bottom of the support frame (4) located directly below the multiple mounting plates (5). A through hole adapted to the drive column (10) is opened on the top of the rotating shaft (9) located at the top of the spiral push rod (6).

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