A screw conveyor

Abstract

The utility model relates to food processing machinery technical field, and disclose a screw conveyor, including feeding bucket, the inside rotation of feeding bucket is equipped with variable pitch feeding screw, the outer surface of variable pitch feeding screw and the inner wall of feeding bucket all cover with food -grade non -stick coating, one side fixed mounting of feeding bucket has motor, the output shaft of motor is fixedly connected with the one end of variable pitch feeding screw through the shaft coupling, the pitch of variable pitch feeding screw gradually reduces, the surface of feeding bucket is equipped with cooling assembly, through adopting the pitch of variable pitch feeding feeding screw that gradually reduces, material is gradually compressed in the conveying process, forms stable'material plug', effectively prevents material reflux and blockage, especially suitable for high viscosity, containing particle's pepper fresh material, the outer surface of variable pitch feeding screw and the inner wall of feeding bucket cover food -grade non -stick coating, greatly reduce the adhesion of material and remain.

Description

Technical Field

[0001] This utility model relates to the field of food processing machinery technology, specifically a screw conveyor. Background Technology

[0002] In the production process of Sichuan pepper flavorings (such as Sichuan pepper sauce, Sichuan pepper oil compound seasoning, etc.), it is often necessary to transport a semi-fluid mixture containing Sichuan pepper granules, oil, sauce and other auxiliary materials from one process to another. At present, factories generally use ordinary screw conveyors to complete this task.

[0003] However, existing screw conveyors have the following obvious drawbacks when conveying such materials: Due to the high viscosity of Sichuan pepper flavoring and the presence of solid particles, ordinary constant-pitch screws easily cause material accumulation and blockage between the conveying pipe and the screw blades during conveying. At the same time, a large amount of material adheres to the screw and pipe wall, resulting in reduced conveying efficiency, incomplete discharge, cross-contamination between batches, and extremely cumbersome cleaning work. The internal structure of the conveyor, especially the connection between the screw and the pipe wall, easily forms sanitary dead corners, which are difficult to clean thoroughly, breed bacteria, and affect food safety. During the high-speed rotation of the screw, friction with the material generates a large amount of heat. Volatile flavor substances in Sichuan pepper (such as Sichuan pepper numbing agent and aromatic oil) are very sensitive to temperature and easily volatilize when heated, resulting in a weakening of the numbing flavor and aroma of the final product and a decline in quality. Under the push of the screw, the material has high pressure at the discharge port, which easily causes splashing, resulting in material waste and pollution of equipment and the working environment.

[0004] Therefore, there is an urgent need for a specialized conveying equipment that can solve the above problems and is suitable for the production of Sichuan pepper flavoring. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a screw conveyor that is less prone to accumulation and blockage, and can maintain low-temperature production, thus solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a screw conveyor, including a feeding barrel, inside which a variable pitch feeding screw is rotatably mounted. The outer surface of the variable pitch feeding screw and the inner wall of the feeding barrel are both covered with a food-grade non-stick coating. A motor is fixedly installed on one side of the feeding barrel. The output shaft of the motor is fixedly connected to one end of the variable pitch feeding screw through a coupling. The pitch of the variable pitch feeding screw gradually decreases. A cooling assembly is provided on the surface of the feeding barrel. An anti-splash unloading assembly is provided at the discharge end of the feeding barrel. A support assembly is provided at the bottom end of the feeding barrel to provide stable support.

[0007] As a preferred embodiment of this utility model, the cooling assembly includes a jacket that is fitted onto the surface of the feeding barrel. A cooling chamber is provided between the jacket and the feeding barrel. A spiral guide plate is provided inside the cooling chamber. The inner ring of the spiral guide plate is fixedly connected to the surface of the feeding barrel, and the outer ring of the spiral guide plate is fixedly connected to the inner wall of the jacket. A water inlet pipe is fixedly provided at the bottom of the jacket, and a water outlet pipe is fixedly provided at the top of the jacket. Cooling medium (such as cold water) enters from the water inlet pipe and spirals upward along the outer wall of the feeding barrel under the guidance of the spiral guide plate. After sufficient heat exchange, it is discharged from the water outlet pipe, effectively removing the frictional heat generated during the conveying process and preventing the material temperature from rising.

[0008] As a preferred embodiment of this utility model, the anti-splash unloading assembly includes a discharge pipe and a guide pipe. One end of the discharge pipe is fixedly provided with a flange one, and one end of the guide pipe is fixedly provided with a flange two. The flange two is fixedly connected to the flange one by bolts. The guide pipe has a bend in the middle. The discharge end of the feeding barrel has a discharge port. The other end of the discharge pipe is fixedly connected to the discharge port. The bend design can increase the discharge resistance, buffer and reduce the flow velocity of the material, thereby effectively preventing material splashing.

[0009] As a preferred embodiment of this utility model, the support assembly includes a support frame one and a support frame two. Several reinforcing rods are fixedly installed inside the support frame one and the support frame two. Several damping shock absorbers are fixedly installed at the bottom end of the support frame one. The bottom ends of the damping shock absorbers are fixedly connected to the top end of the support frame two. Ground wheels are fixedly installed at the four corners of the bottom end of the support frame two. A wheel brake is provided on one side of the ground wheel. The damping shock absorbers can absorb the vibration during equipment operation, the ground wheels are easy to move, and the wheel brake is used to fix the position.

[0010] As a preferred embodiment of this utility model, two threaded grooves are provided on both sides of the first support frame, and threaded rods are threadedly connected to the threaded grooves. A handwheel is fixedly provided at the top of the threaded rod, and a smooth round rod is fixedly provided at the bottom of the threaded rod. A rod groove is provided on both sides of the second support frame to slide with the smooth round rod. A pad is fixedly provided at the bottom of the smooth round rod, and a rubber pad is fixedly provided at the bottom of the pad. Rotating the handwheel can cause the threaded rod to drive the smooth round rod and the pad to move up and down relative to the second support frame. When the equipment needs to be parked stably for a long time, the pad can be unscrewed until the rubber pad is in close contact with the ground, providing additional stable support and reducing the load on the ground wheel and shock absorber.

[0011] As a preferred embodiment of this utility model, a support plate is fixedly provided at the bottom of the feeding barrel, and the bottom end of the support plate is fixedly connected to one side of the top of the support frame. Two support rods are fixedly provided at the top of the feeding barrel, and the bottom ends of the support rods are fixedly connected to the other side of the top of the support frame. The support plate and the support rods together securely install the feeding barrel on the support frame.

[0012] As a preferred technical solution of this utility model, the feeding end of the feeding barrel is provided with a feeding port, the surface of the feeding port is fixedly provided with a feeding pipe, and the top end of the feeding pipe is fixedly provided with a feeding hopper, which facilitates the input of materials.

[0013] As a preferred technical solution of this utility model, reinforcing plates are fixedly provided at the bottom of both sides of the feeding hopper, and the bottom end of the reinforcing plate is fixedly connected to the surface of the feeding barrel. The reinforcing plate enhances the stability of the connection between the feeding hopper and the feeding barrel.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This screw conveyor uses a variable pitch feeding screw with a gradually decreasing pitch. During the conveying process, the material is gradually compressed to form a stable "material plug," effectively preventing material backflow and blockage. It is particularly suitable for high-viscosity, granular Sichuan peppercorn seasoning. The outer surface of the variable pitch feeding screw and the inner wall of the feeding hopper are covered with a food-grade non-stick coating, which greatly reduces material adhesion residue. This not only improves the output rate but also makes equipment cleaning very convenient, effectively eliminating hygiene dead corners and complying with food safety production standards. By setting a support component at the bottom of the feeding hopper, it integrates walking and shock absorption functions, making the equipment flexible to move and effectively reducing vibration and noise during operation.

[0015] 2. This screw conveyor, through a cooling component installed on the surface of the feeding hopper, utilizes circulating cooling water to remove the heat generated by the friction between the screw and the material, maintaining the entire conveying process at a low temperature. This maximizes the preservation of the volatile flavor compounds of the peppercorns, ensuring product quality. The internal spiral guide plate extends the flow path of the cooling medium, improving heat exchange efficiency. By incorporating an anti-splash discharge component, the flow direction and speed of the material are altered at the discharge port, effectively dissipating kinetic energy and achieving smooth, splash-free discharge, reducing material waste and environmental pollution. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of this utility model; Figure 2 This is the second structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the feeding hopper of this utility model; Figure 4This is a schematic diagram of the cooling component of this utility model; Figure 5 This is a cross-sectional structural diagram of the feeding barrel of this utility model; Figure 6 This is a schematic diagram of the structure of the support component of this utility model.

[0017] In the diagram: 1. Feeding bucket; 2. Variable pitch feeding screw; 3. Motor; 4. Cooling assembly; 401. Jacket; 402. Spiral guide plate; 403. Water inlet pipe; 404. Water outlet pipe; 5. Anti-splash unloading assembly; 501. Discharge pipe; 502. Guide pipe; 503. Bending section; 504. Flange 1; 505. Flange 2; 6. Support assembly; 601. Support frame 1; 602. Damping shock absorber; 603. Support frame 2; 604. Ground wheel; 605. Threaded rod; 606. Handwheel; 607. Plain round rod; 608. Pad plate; 609. Rubber pad; 7. Support plate; 8. Support rod; 9. Feeding hopper; 10. Feeding pipe; 11. Reinforcing plate; 12. Discharge port; 13. Feed inlet. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-6 The screw conveyor includes a feeding hopper 1, with a variable pitch feeding screw 2 rotating inside the feeding hopper 1. The outer surface of the variable pitch feeding screw 2 and the inner wall of the feeding hopper 1 are covered with a food-grade non-stick coating, which greatly reduces the adhesion and residue of materials, not only improving the discharge rate but also making the equipment cleaning very convenient. A motor 3 is fixedly installed on one side of the feeding hopper 1. The output shaft of the motor 3 is fixedly connected to one end of the variable pitch feeding screw 2 through a coupling to provide it with rotational power. The pitch of the variable pitch feeding screw 2 gradually decreases. A cooling component 4 is provided on the surface of the feeding hopper 1. An anti-splash unloading component 5 is provided at the discharge end of the feeding hopper 1. A support component 6 is provided at the bottom of the feeding hopper 1 to provide stable support, which can be used for support, shock absorption, and movement. In this embodiment, preferably, the cooling assembly 4 includes a jacket 401, which is sleeved on the surface of the feeding barrel 1. A cooling chamber is provided between the jacket 401 and the feeding barrel 1. A spiral guide plate 402 is provided inside the cooling chamber. The inner ring of the spiral guide plate 402 is fixedly connected to the surface of the feeding barrel 1, and the outer ring of the spiral guide plate 402 is fixedly connected to the inner wall of the jacket 401, dividing the cooling chamber into a spiral channel. A water inlet pipe 403 is fixedly provided at the bottom of the jacket 401, and a water outlet pipe 404 is fixedly provided at the top of the jacket 401, which can be used for water inlet and water outlet. In this embodiment, preferably, the anti-splash unloading assembly 5 includes a discharge pipe 501 and a conduit 502. One end of the discharge pipe 501 is fixedly provided with a flange 504, and one end of the conduit 502 is fixedly provided with a flange 505. The flange 505 is fixedly connected to the flange 504 by bolts. The middle part of the conduit 502 is provided with a bend 503. The discharge end of the feeding barrel 1 is provided with a discharge port 12. The other end of the discharge pipe 501 is fixedly connected to the discharge port 12. The conduit 502 is connected to the discharge pipe 501 by the flange 504 and the flange 505, which is firm and reliable, and allows the conduit 502 to be installed and disassembled. In this embodiment, preferably, the support component 6 includes a first support frame 601 and a second support frame 603. Several reinforcing rods are fixedly installed inside both the first support frame 601 and the second support frame 603. Several damping shock absorbers 602 are fixedly installed at the bottom end of the first support frame 601, and the bottom ends of the damping shock absorbers 602 are fixedly connected to the top end of the second support frame 603. Ground wheels 604 are fixedly installed at the four corners of the bottom end of the second support frame 603, and a wheel brake is provided on one side of each ground wheel 604. Two threaded grooves are opened on both sides of the first support frame 601, and threaded rods 605 are threadedly connected to the threaded grooves. A handwheel 606 is fixedly installed at the top end of the threaded rod 605, and a smooth round rod 607 is fixedly installed at the bottom end of the threaded rod 605. A handwheel 607 is also fixedly installed on both sides of the second support frame 603. 07 The rod groove of the sliding connection, the bottom end of the smooth round rod 607 is fixedly provided with a pad 608, the bottom end of the pad 608 is fixedly provided with a rubber pad 609, the bottom of the feeding barrel 1 is fixedly provided with a support plate 7, the bottom end of the support plate 7 is fixedly connected to one side of the top of the support frame 1 601, the top of the feeding barrel 1 is fixedly provided with two support rods 8, the bottom end of the support rods 8 is fixedly connected to the other side of the top of the support frame 1 601, the support frame 1 601 and the support frame 2 603 can provide stable support for the feeding barrel 1, the damping shock absorber 602 can play the role of shock reduction during operation, the feeding barrel 1 can be moved by the ground wheel 604, the rubber pad 609 can be raised and lowered by turning the handwheel 606, the smooth round rod 607 can slide in the rod groove on the side of the support frame 2 603 for stable stopping of the equipment; In this embodiment, preferably, the feeding end of the feeding barrel 1 is provided with a feeding port 13, the surface of the feeding port 13 is fixedly provided with a feeding pipe 10, the top end of the feeding pipe 10 is fixedly provided with a feeding hopper 9, and the bottom of both sides of the feeding hopper 9 is fixedly provided with reinforcing plates 11. The bottom end of the reinforcing plates 11 is fixedly connected to the surface of the feeding barrel 1. The feeding port 13 can ensure the input of materials, and the reinforcing plates 11 can strengthen the feeding hopper 9.

[0020] When in use, the conveyor is moved to the predetermined working position by using the ground wheels 604 at the bottom of the support assembly 6. The wheel brakes on all the ground wheels 604 are stepped on to prevent the equipment from moving. If long-term stable operation or use under high-intensity vibration is required, the handwheel 606 can be turned to drive the threaded rod 605 and the smooth round rod 607 to descend until the rubber pad 609 at the bottom is in close contact with the ground, providing additional stable support for the equipment and reducing the load on the ground wheels 604. Connect an external cooling water source (such as a chiller or water pipe) to the inlet pipe 403 at the bottom of the cooling assembly 4, and connect the cooling water outlet to the outlet pipe 404 at the top to ensure that the cooling medium (usually cold water) can circulate. Before starting the conveyor, turn on the cooling water circulation system. The cooling water enters from the inlet pipe 403 and rises along the outer wall of the feeding barrel 1 in the spiral channel formed by the spiral guide plate 402. After fully absorbing the frictional heat generated during the material conveying process, it is discharged from the outlet pipe 404. This step is crucial for materials that require temperature control (such as Sichuan pepper flavoring) and can effectively preserve flavor substances. The material to be conveyed (especially highly viscous and easily heated materials) is poured into the feeding hopper 9. The material enters the feeding barrel 1 through the feeding pipe 10 and the inlet 13. The motor 3 is started, and the motor 3 drives the variable pitch feeding screw 2 to rotate inside the feeding barrel 1 through the coupling. Since the pitch of the variable pitch feeding screw 2 gradually decreases from the feeding end to the discharging end, the material is gradually compressed during the conveying process, forming a dense "material plug". This not only effectively prevents material backflow and blockage, but also achieves stable and continuous conveying. The compressed material finally enters the anti-splash unloading assembly 5 through the discharge port 12. The material first passes through the discharge pipe 501, and then enters the guide tube 502 with the bend 503. The design of the bend 503 changes the flow direction of the material and increases the flow resistance, effectively buffering and reducing the outflow velocity of the material, thereby achieving smooth and splash-free unloading, reducing material waste and environmental pollution.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw conveyor, comprising a feeding hopper (1), characterized in that: The feeding barrel (1) is equipped with a variable pitch feeding screw (2) that rotates inside. The outer surface of the variable pitch feeding screw (2) and the inner wall of the feeding barrel (1) are covered with a food-grade non-stick coating. A motor (3) is fixedly installed on one side of the feeding barrel (1). The output shaft of the motor (3) is fixedly connected to one end of the variable pitch feeding screw (2) through a coupling. The pitch of the variable pitch feeding screw (2) gradually decreases. A cooling component (4) is provided on the surface of the feeding barrel (1). An anti-splash unloading component (5) is provided at the discharge end of the feeding barrel (1). A support component (6) is provided at the bottom of the feeding barrel (1) to provide stable support.

2. The screw conveyor according to claim 1, characterized in that: The cooling assembly (4) includes a jacket (401), which is sleeved on the surface of the feeding barrel (1). A cooling chamber is provided between the jacket (401) and the feeding barrel (1). A spiral guide plate (402) is provided inside the cooling chamber. The inner ring of the spiral guide plate (402) is fixedly connected to the surface of the feeding barrel (1). The outer ring of the spiral guide plate (402) is fixedly connected to the inner wall of the jacket (401). A water inlet pipe (403) is fixedly provided at the bottom of the jacket (401). A water outlet pipe (404) is fixedly provided at the top of the jacket (401).

3. The screw conveyor according to claim 1, characterized in that: The anti-splash unloading assembly (5) includes a discharge pipe (501) and a conduit (502). One end of the discharge pipe (501) is fixedly provided with a flange (504), and one end of the conduit (502) is fixedly provided with a flange (505). The flange (505) is fixedly connected to the flange (504) by bolts. The conduit (502) has a bend (503) in the middle. The discharge end of the feeding barrel (1) is provided with a discharge port (12), and the other end of the discharge pipe (501) is fixedly connected to the discharge port (12).

4. The screw conveyor according to claim 1, characterized in that: The support assembly (6) includes a support frame one (601) and a support frame two (603). Several reinforcing rods are fixedly installed inside the support frame one (601) and the support frame two (603). Several damping shock absorbers (602) are fixedly installed at the bottom of the support frame one (601). The bottom of the damping shock absorber (602) is fixedly connected to the top of the support frame two (603). Ground wheels (604) are fixedly installed at the four corners of the bottom of the support frame two (603). A wheel brake is provided on one side of the ground wheel (604).

5. The screw conveyor according to claim 4, characterized in that: The first support frame (601) has two threaded grooves on both sides, and a threaded rod (605) is threadedly connected to the threaded groove. A handwheel (606) is fixedly provided at the top of the threaded rod (605), and a smooth round rod (607) is fixedly provided at the bottom of the threaded rod (605). The second support frame (603) has a rod groove on both sides that is slidably connected to the smooth round rod (607). A pad (608) is fixedly provided at the bottom of the smooth round rod (607), and a rubber pad (609) is fixedly provided at the bottom of the pad (608).

6. The screw conveyor according to claim 4, characterized in that: The bottom of the feeding barrel (1) is fixedly provided with a support plate (7), the bottom end of the support plate (7) is fixedly connected to one side of the top of the support frame (601), and the top of the feeding barrel (1) is fixedly provided with two support rods (8), the bottom end of the support rods (8) is fixedly connected to the other side of the top of the support frame (601).

7. The screw conveyor according to claim 1, characterized in that: The feeding end of the feeding barrel (1) is provided with a feeding port (13), and a feeding pipe (10) is fixedly provided on the surface of the feeding port (13). A feeding hopper (9) is fixedly provided at the top of the feeding pipe (10).

8. The screw conveyor according to claim 7, characterized in that: The bottom of both sides of the feeding hopper (9) is fixedly provided with reinforcing plates (11), and the bottom end of the reinforcing plates (11) is fixedly connected to the surface of the feeding barrel (1).

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