A new raw material feeding device

Abstract

The utility model discloses a novel raw material feeding device, through the electric push rod drive section right angle triangle shape ring lower pressure installation pole's inclined surface, force scraper radial outward continuously resist tight mixing cylinder inner wall, combine the elastic compensation of reset spring, the wear gap of automatic compensation cylinder wall and scraper, ensure that scraper always comprehensive adhesion cylinder wall under different working conditions, completely eliminate raw material adhesion, avoid batch cross -contamination, and raw material utilization rate promotes >=15%.

Description

Technical Field

[0001] This utility model relates to the field of industrial coating production technology, specifically a novel raw material feeding device. Background Technology

[0002] In the production of industrial coatings, the feeding and mixing of raw materials are key steps that affect product quality. Powdered or viscous raw materials tend to adhere to the inner wall of the mixing drum. There is a gap between the scraper at the end of the conventional stirring shaft and the drum wall, or the gap widens after long-term wear, resulting in incomplete scraping. The residue not only reduces the utilization rate of raw materials, but also contaminates subsequent batches, affecting product consistency. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model discloses a novel raw material feeding device. The technical solution adopted includes a feeding mixing cylinder, a base, a feeding channel, a bottom quantitative discharge pump, a discharge pipe, an electrical box, an electric push rod, wiring, a rotating motor, an output shaft, a rotating shaft, a fixed shaft, a reset part, an upper extrusion part, a mounting rod, a stirring shaft, a scraper, and an inclined surface. Several bases are fixed at the bottom of the feeding mixing cylinder, the feeding channel is opened at the top, and the bottom quantitative discharge pump is set at the bottom and connected to the discharge pipe. The bottom quantitative discharge pump is a common discharge device in the field, used to assist in discharge, and the model selection is also conventional. It is powered by an external power supply. The electrical box and electric push rod are fixedly installed on the top of the feeding mixing cylinder. The electric push rod is electrically connected to the electrical box through wiring. The circuits for electrical connection of the left and right electric push rods are connected in series to the same power supply, that is, a single switch can drive two electric push rods to operate simultaneously. A rotating electric motor is installed at the center of the upper surface of the feeding mixing cylinder. The machine features a rotating motor whose output shaft extends through a through-hole at the center of the upper surface of the mixing cylinder and is fixedly connected to a rotating shaft at its lower end. This motor is powered by an external power source and, upon startup, drives the rotating shaft to rotate. The upper and lower sides of the rotating shaft are integrally formed with a fixed shaft. A mounting rod with through-holes is fitted onto the fixed shaft. A reset section is located on the fixed shaft, and an upper extrusion section within the reset section extrudes the inclined surface on the inner side of the top of the mounting rod. Several stirring shafts are integrally formed on the outer side of the mounting rod, with scrapers fixed to their outer ends. These scrapers contact the inner wall of the mixing cylinder. The extrusion section is driven by an electric actuator. Once activated, the electric actuator pushes the extrusion section downwards. As the extrusion section moves downwards, it pushes the mounting rod outwards, ensuring the scraper remains firmly pressed against the inner wall of the mixing cylinder. This prevents wear on the inner wall of the mixing cylinder after prolonged use, which could cause the scraper to lose contact with the inner wall and affect the scraping effect. This structure ensures a good scraping effect and prevents residual material from adhering to the inner wall.

[0004] As a preferred technical solution of this utility model, a flared opening is provided on the feeding channel to increase the feeding coverage.

[0005] As a preferred technical solution of this utility model, the reset part includes an end plate and a reset spring. The outer end of the fixed shaft is fixed to the end plate, one end of the reset spring is fixedly connected to the end plate, and the other end is fixedly connected to the outer side of the mounting rod. The reset spring is sleeved on the outside of the fixed shaft.

[0006] As a preferred technical solution of this utility model, the upper extrusion part includes a circular ring and a right-angled triangular ring. The output end of the electric push rod extends into the feeding mixing cylinder from the top through hole and fixes the circular ring at its output end. The lower surface of the circular ring is integrally formed with a right-angled triangular ring, and the inclined surface of the right-angled triangular ring contacts the inclined surface.

[0007] As a preferred technical solution of this utility model, the scraper is made of stainless steel and the battery in the electrical box is a rechargeable battery.

[0008] The beneficial effects of this utility model are as follows: the electric actuator drives the right-angled triangular ring to press down on the inclined surface of the mounting rod, forcing the scraper to continuously press against the inner wall of the mixing drum radially outward. Combined with the elastic compensation of the return spring, the wear gap between the drum wall and the scraper is automatically compensated, ensuring that the scraper always fully fits the drum wall under different working conditions, completely eliminating raw material adhesion, avoiding batch cross-contamination, and improving the raw material utilization rate by ≥15%. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0011] Figure 3 This is a front sectional view of the present invention.

[0012] In the diagram: 1. Feeding and mixing cylinder; 2. Base; 3. Feeding channel; 4. Bottom quantitative discharge pump; 5. Discharge pipe; 6. Electrical box; 7. Electric push rod; 8. Wiring; 9. Rotating motor; 10. Output shaft; 11. Rotating shaft; 12. Fixed shaft; 13. End plate; 14. Reset spring; 15. Mounting rod; 16. Stirring shaft; 17. Scraper; 18. Inclined surface; 19. Ring; 20. Right-angled triangular ring. Detailed Implementation

[0013] Example 1

[0014] like Figures 1 to 3As shown, this utility model discloses a novel raw material feeding device. The technical solution adopted includes a feeding mixing cylinder 1, a base 2, a feeding channel 3, a bottom quantitative discharge pump 4, a discharge pipe 5, an electrical box 6, an electric push rod 7, wiring 8, a rotating motor 9, an output shaft 10, a rotating shaft 11, a fixed shaft 12, a reset part, an upper extrusion part, a mounting rod 15, a stirring shaft 16, a scraper 17, and an inclined surface 18. Several bases 2 are fixed at the bottom of the feeding mixing cylinder 1, and a feeding channel 3 is opened at the top. The bottom quantitative discharge pump 4 is set at the bottom and connected to the discharge pipe 5. The electrical box 6 and the electric push rod 7 are fixedly installed on the top of the feeding mixing cylinder 1. The electric push rod 7 is connected to the wiring 8. Electrically connected to the electrical box 6, a rotating motor 9 is installed at the center of the upper surface of the feeding mixing cylinder 1. The output shaft 10 of the rotating motor 9 extends into the through hole at the center of the upper surface of the feeding mixing cylinder 1 and is fixedly connected to the lower end of the output shaft 10. The upper and lower parts of the side of the rotating shaft 11 are integrally formed with a fixed shaft 12. The mounting rod 15 has a through hole and is sleeved on the fixed shaft 12 through the through hole. The fixed shaft 12 is provided with a reset part. The upper extrusion part is provided in the reset part to extrude the inclined surface 18 on the inner side of the top of the mounting rod 15. Several stirring shafts 16 are integrally formed on the outer side of the mounting rod 15. A scraper 17 is fixed at the outer end of the stirring shaft 16 and contacts the inner wall of the feeding mixing cylinder 1.

[0015] As a preferred technical solution of this utility model, a flared opening 31 is provided on the feeding channel 3.

[0016] As a preferred technical solution of this utility model, the reset part includes an end plate 13 and a reset spring 14. The outer end of the fixed shaft 12 is fixed to the end plate 13. One end of the reset spring 14 is fixedly connected to the end plate 13, and the other end is fixedly connected to the outer side of the mounting rod 15. The reset spring 14 is entirely sleeved on the outside of the fixed shaft 12.

[0017] As a preferred embodiment of this utility model, the upper extrusion section includes a circular ring 19 and a right-angled triangular ring 20. The output end of the electric push rod 7 extends into the feeding mixing cylinder 1 through the top surface through hole and the circular ring 19 is fixed at its output end. The lower surface of the circular ring 19 is integrally formed with the right-angled triangular ring 20. The inclined surface of the right-angled triangular ring 20 contacts the inclined surface 18. The distance between the inner diameter of the through hole of the mounting rod 15 and the outer diameter of the fixed shaft is between 0.05 mm and 0.1 mm. This precision range ensures smooth radial sliding of the mounting rod and avoids excessive gaps that could cause the scraper 17 to deviate. The inclined surface of the right-angled triangular ring 20 has an inclination angle of 45°, and its force decomposition satisfies F Horizontal = F_vertical tanα. When the electric actuator 7 is pressed down, the inclined surface contact generates a radial component force, while the lateral component force forces the mounting rod to automatically fine-tune its alignment, eliminating the off-center loading and jamming caused by machining errors. The preload force F of the return spring 14 is ≥20N (measured value), which always applies a centripetal pull to the mounting rod, avoiding frictional resistance caused by the weight of the mounting rod. The surface of the fixed shaft 11 is mirror polished (Ra≤0.4μm) to reduce the sliding friction coefficient to ≤0.1.

[0018] In a preferred embodiment of this invention, the scraper 17 is made of stainless steel. The battery inside the electrical box 6 is a rechargeable battery.

[0019] The working principle of this utility model is as follows: During use, the raw materials enter the mixing cylinder through the top funnel-shaped feeding channel, expanding the dispersion area and preventing localized accumulation. The rotating motor is started, driving the output shaft and rotating shaft to rotate. The mounting rod fixed to the rotating shaft rotates synchronously. The stirring shaft and scraper radially mix the raw materials. The electric push rod (with left and right linkage) is activated, its output end pushing downwards the circular ring and the integrally formed right-angled triangular ring. The inclined surface of the triangular ring contacts the inclined surface at the top of the mounting rod, converting the vertical thrust of the electric push rod into a horizontal outward component force. The mounting rod is pushed along the fixed... The fixed-axis radial outward movement forces the scraper to press tightly against the cylinder wall. When wear on the cylinder wall or scraper causes the gap to increase, the electric actuator continuously presses down to dynamically compensate for the gap, ensuring that the scraper is always in full contact for scraping. After the electric actuator is closed, the return spring retracts, pulling the mounting rod and scraper radially inward to disengage from the cylinder wall and reduce idling wear. In actual use, the prototype underwent 5000 cycles of electric actuator pressurization and reset. The sliding resistance fluctuation range of the mounting rod was 8.2±0.3N (less than 10% of the electric actuator output force), and the radial displacement repeatability of the scraper was ±0.03 mm, effectively avoiding the risk of jamming and meeting the requirements for long-term stable operation.

[0020] Components not described in detail in this article are existing technologies.

[0021] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A novel raw material feeding device, comprising a feeding mixing cylinder (1), a base (2), a feeding channel (3), a bottom quantitative discharge pump (4), a discharge pipe (5), an electrical box (6), an electric push rod (7), wiring (8), and a rotating motor (9), characterized in that: The feed mixing cylinder (1) includes an output shaft (10), a rotating shaft (11), a fixed shaft (12), a reset part, an upper extrusion part, a mounting rod (15), a stirring shaft (16), a scraper (17), and an inclined surface (18). Several bases (2) are fixed to the bottom of the feed mixing cylinder (1), a feed channel (3) is opened at the top, and a bottom quantitative discharge pump (4) is installed at the bottom and connected to a discharge pipe (5). An electrical box (6) and an electric push rod (7) are fixedly installed on the top of the feed mixing cylinder (1), and the electric push rod (7) is electrically connected to the electrical box (6) via a wiring (8). A rotating motor (9) is installed at the center of the upper surface of the feed mixing cylinder (1). The output of the rotating motor (9)... The shaft (10) extends into the through hole at the center of the upper surface of the feeding mixing cylinder (1) and is fixedly connected to the rotating shaft (11) at the lower end of the output shaft (10); the upper and lower sides of the rotating shaft (11) are integrally formed with a fixed shaft (12), and the mounting rod (15) has a through hole, which is sleeved on the fixed shaft (12); the fixed shaft (12) is provided with a reset part; the reset part is provided with an upper extrusion part to extrude the inclined surface (18) on the inner side of the top of the mounting rod (15); the outer side of the mounting rod (15) is integrally formed with several stirring shafts (16), and the outer end of the stirring shaft (16) is fixed with a scraper (17), which contacts the inner wall of the feeding mixing cylinder (1).

2. The novel raw material feeding device according to claim 1, characterized in that: A flared opening (31) is provided on the feeding channel (3).

3. The novel raw material feeding device according to claim 1, characterized in that: The reset part includes an end plate (13) and a reset spring (14); the outer end of the fixed shaft (12) is fixed to the end plate (13), one end of the reset spring (14) is fixedly connected to the end plate (13), and the other end is fixedly connected to the outer side of the mounting rod (15), and the reset spring (14) is entirely sleeved on the outside of the fixed shaft (12).

4. The novel raw material feeding device according to claim 3, characterized in that: The upper extrusion section includes a circular ring (19) and a right-angled triangular ring (20); the output end of the electric push rod (7) extends into the feeding mixing cylinder (1) from the top through hole and fixes the circular ring (19) at its output end. The lower surface of the circular ring (19) is integrally formed with a right-angled triangular ring (20), and the inclined surface of the right-angled triangular ring (20) contacts the inclined surface (18).

5. The novel raw material feeding device according to claim 1, characterized in that: The scraper (17) is made of stainless steel.

6. The novel raw material feeding device according to claim 1, characterized in that: The battery inside the electrical box (6) is a rechargeable battery.

Images