A small household extrusion type coarse grain bulking machine

Abstract

The utility model belongs to food processing equipment technical field discloses a kind of household small extrusion type coarse grain bulking machine, including base, motor is fixedly installed on the base, power output end of motor is connected with driving shaft in transmission, driving shaft outer surface is provided with rotating assembly, driving shaft other end is detachably connected with screw rod, screw rod outer surface is provided with screw sleeve, screw sleeve and screw rod are nested cooperation, screw sleeve outer surface is fixedly installed with barrel, barrel is fixedly installed on rotating assembly, screw rod end place outer surface is provided with head, head is fixedly installed on the inner wall of barrel, barrel outer surface and head corresponding position are provided with automatic temperature control device, the discharge end of head is detachably installed with mould;The utility model whole simple structure can automatically accurately control heating temperature, guarantee discharging stability, prevent blocking machine, improve use effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of food processing equipment, specifically, it relates to a small household extrusion grain puffing machine. Background Technology

[0002] Currently, most extrusion grain puffing machines commonly used in the food processing industry are high-power commercial machines. They mainly consist of a screw, screw sleeve, cylinder hopper, die head assembly, and power drive device. Their working principle is as follows: a screw sleeve and screw are housed within the closed cavity formed by the cylinder and die head assembly. When the power drives the screw to rotate via the drive mechanism, the grains in the hopper enter between the screw and screw sleeve through the feed inlet. The rotating screw and the fixed screw sleeve work together to shear and push the grains, continuously pushing the pre-processed grains to the grinding section. The grains are ground at high speed, gradually forming a high-temperature, high-pressure paste-like liquid, which is then continuously pushed to the die head assembly and sprayed out through the small gaps in the die nozzles. The liquid cools rapidly upon sudden contact with the external environment, while the compressed water vapor inside expands and escapes, ultimately forming a porous and fluffy puffed structure.

[0003] However, these commercial extruders have significant limitations in practical applications, especially in home use. On the one hand, during the initial working stage, the machine needs to gradually establish the temperature and pressure required for normal operation within the cavity. During this process, operators need to rely on their extensive experience to continuously adjust the raw material supply and even the rotation speed until the temperature reaches the normal operating requirements. If the operation is improper, problems such as machine blockage and clogging can easily occur, leading not only to work failure but also damage to machine parts. Therefore, operators are required to have professional operating skills and undergo pre-job training. This makes these extruders suitable only for commercial applications by professionals and unable to be miniaturized for home use.

[0004] On the other hand, although some small extrusion puffing devices have appeared on the market that attempt to adapt to home scenarios, they still have many technical defects and cannot meet the core demands of home users for easy operation, low loss and high stability.

[0005] For example, a Chinese patent with application number CN201510936169.2 discloses a small portable puffing device, relating to the field of food machinery. It includes a frame, a base, a drive motor, a rotating shaft, a pulley, and a feed inlet. The frame is located above the base and includes a fixed cylinder and an extrusion cylinder, connected by a flange joint secured with bolts. The drive motor is located at the bottom of the frame and drives the pulley via a belt. A screw is located inside the extrusion cylinder. The right end of the rotating shaft is welded to the pulley, and its left end passes through the fixed cylinder and extrusion cylinder and is welded to the screw. The feed inlet is located at the top of the extrusion cylinder. A protective cover is provided outside the drive motor and pulley. This small portable puffing device is powered by household electricity and can puff crops such as corn. It is small in size and lightweight, making it worthy of promotion.

[0006] However, the temperature control method in this patent has significant shortcomings—the heating position is far from the critical stage of final cooking and puffing of the material (the die head area), which is a remote auxiliary heating mode. This not only results in heat conduction loss, easily leading to insufficient temperature at the die head, but also requires manual adjustment of the heating power by the user because it lacks an automatic temperature control function. Home users lack professional operating experience and find it difficult to accurately control the temperature. In the initial working stage, an uneven state of local overheating and local underheating is likely to occur, resulting in a large amount of uncooked and inedible material, causing waste of grains. At the same time, temperature fluctuations can cause significant differences in the fluffiness and taste of different batches of puffed food, affecting the user experience. Utility Model Content

[0007] The main technical problem to be solved by this utility model is to provide a small household extrusion grain puffing machine with a simple overall structure, easy operation, automatic and precise control of heating temperature, stable output, prevention of machine blockage, and improved performance.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A small-scale extrusion grain puffing machine for home use includes a base on which a motor is fixedly mounted. The power output end of the motor is connected to a drive shaft. A rotating component is provided on the outer surface of the drive shaft. A screw is detachably connected to the other end of the drive shaft. A screw sleeve is provided on the outer surface of the screw. The screw sleeve and the screw are nested together. A cylinder is fixedly mounted on the outer surface of the screw sleeve. The cylinder is fixedly mounted on the rotating component. A machine head is provided on the outer surface of the screw end. The machine head is fixedly mounted on the inner wall of the cylinder. An automatic temperature control device is provided on the outer surface of the cylinder at a position corresponding to the machine head. A mold is detachably mounted on the discharge end of the machine head.

[0009] The following are further optimizations of the above technical solution by this utility model: The drive shaft is arranged parallel to the power output shaft of the motor, and the drive shaft is rotatably mounted on the base above the motor.

[0010] Further optimization: A main sprocket is fixedly installed on the power output shaft of the motor, and a driven sprocket is fixedly installed at the end of the drive shaft corresponding to the main sprocket. The outer surfaces of the main sprocket and the driven sprocket are meshed with the same transmission chain.

[0011] Further optimization: The outer surface of the drive shaft is set in a stepped shape at the end away from the passive sprocket.

[0012] Further optimization: The rotating assembly includes a first bearing sleeved on the stepped position of the outer surface of the drive shaft, a bearing spacer sleeved on the outer surface of the drive shaft near the first bearing, and a second bearing sleeved on the outer surface of the drive shaft near the bearing spacer sleeve. The first bearing, the bearing spacer sleeve, and the outer surfaces of the second bearing are fixedly mounted on the same bearing seat.

[0013] Further optimization: A baffle is provided at one end of the cylinder near the first bearing.

[0014] Further optimization: The bearing housing is threaded with an end cap at the end away from the driven sprocket, and the end cap is also fitted onto the outer surface of the cylinder baffle.

[0015] Further optimization: A feed inlet is provided on the outer surface of the cylinder near the bearing seat, and the feed inlet extends sequentially through the cylinder and the screw sleeve to the position between the screw and the screw sleeve.

[0016] This invention employs the aforementioned technical solution to install an automatic temperature control device on the outer surface of the cylinder corresponding to the die head, thereby achieving directional heating of the core area (die head) for the final cooking and puffing of the material. The heat can directly act on the die head and the internal material, avoiding uneven heating and insufficient temperature (at the die head), reducing the generation of uncooked material in the initial stage, minimizing grain waste, and preventing machine blockage.

[0017] This utility model adopts the above-mentioned technical solution, with ingenious design and reasonable structure. It can achieve automatic and precise temperature control during the use of the extruder, reduce material waste, and ensure stable extruded quality. By setting an automatic temperature control device to preset the working temperature, the machine head is automatically heated to the standard value before starting. During operation, the temperature is monitored and dynamically adjusted in real time (such as the precise temperature control function of the FGDH type fully enclosed heater), eliminating the need for home users to manually adjust the power or speed based on experience. Even non-professional users can ensure that the degree of cooking of each batch of materials is consistent, and the fluffiness and taste of the produced extruded food are stable, avoiding quality differences caused by temperature fluctuations.

[0018] Before operation, the equipment only requires three steps: "turn on the automatic temperature control device → start the motor after the temperature reaches the target → add raw materials through the feed inlet." Unlike commercial extruders, it does not require frequent adjustments to the raw material supply or speed, nor does it require manual temperature control like traditional small equipment. Home users do not need professional skills training, and the elderly and children can operate it safely with guidance, truly achieving widespread adoption in home settings.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this utility model.

[0021] In the diagram: 1. Base; 2. Motor; 21. Main sprocket; 22. Drive chain; 23. Driven sprocket; 3. Drive shaft; 31. Second bearing; 32. Bearing spacer; 33. Bearing seat; 34. End cap; 35. First bearing; 4. Screw; 5. Screw sleeve; 6. Cylinder; 7. Feed inlet; 8. Machine head; 9. Automatic temperature control device; 10. Mold. Detailed Implementation

[0022] like Figure 1 As shown: A small household extrusion grain puffing machine includes a base 1, on which a motor 2 is fixedly installed. The power output end of the motor 2 is connected to a drive shaft 3. A rotating component is provided on the outer surface of the drive shaft 3. A screw 4 is detachably connected to the other end of the drive shaft 3. A screw sleeve 5 is provided on the outer surface of the screw 4. The screw sleeve 5 and the screw 4 are nested together. A cylinder 6 is fixedly installed on the outer surface of the screw sleeve 5. The cylinder 6 is fixedly installed on the rotating component. A machine head 8 is provided on the outer surface of the end of the screw 4. The machine head 8 is fixedly installed on the inner wall of the cylinder 6. An automatic temperature control device 9 is provided at the corresponding position on the outer surface of the cylinder 6 and the machine head 8. A mold 10 is detachably installed at the discharge end of the machine head 8.

[0023] In this embodiment, the base 1 is L-shaped, which can increase the stability of the extruder during use.

[0024] A main sprocket 21 is fixedly mounted on the power output shaft of the motor 2.

[0025] The drive shaft 3 is arranged parallel to the power output shaft of the motor 2, and the drive shaft 3 is rotatably mounted on the base 1 above the motor 2.

[0026] A passive sprocket 23 is fixedly installed on the drive shaft 3 at the end corresponding to the main sprocket 21.

[0027] The main sprocket 21 and the driven sprocket 23 are connected by the same transmission chain 22 on their outer surfaces.

[0028] With this design, the power output shaft of the motor 2 rotates through the transmission of the main sprocket 21, the transmission chain 22 and the driven sprocket 23, which in turn drives the drive shaft 3 to rotate.

[0029] In addition to this embodiment, the transmission method of the main sprocket 21, transmission chain 22 and driven sprocket 23 can be replaced by belt and pulley transmission.

[0030] The outer surface of the drive shaft 3 is stepped at the end away from the passive sprocket 23.

[0031] The rotating assembly includes a first bearing 35 fitted onto the stepped position on the outer surface of the drive shaft 3.

[0032] A bearing spacer 32 is fitted on the outer surface of the drive shaft 3 near the first bearing 35.

[0033] A second bearing 31 is fitted onto the outer surface of the drive shaft 3 near the bearing spacer 32.

[0034] The first bearing 35, the bearing spacer 32, and the second bearing 31 are all fixedly mounted on the outer surface of the same bearing housing 33.

[0035] With this design, the drive shaft 3 is rotatably mounted on the bearing seat 33 under the action of the first bearing 35 and the second bearing 31, which increases the rotational stability of the drive shaft 3.

[0036] Both the first bearing 35 and the second bearing 31 are commercially available.

[0037] The screw 4 is mounted on the drive shaft 3 via a detachable key, which is not shown in the figure. The specific connection structure is known in the prior art and will not be described in detail here.

[0038] A baffle is provided at one end of the cylinder 6 near the first bearing 35. The end of the cylinder 6 near the first bearing 35 is sleeved on the drive shaft 3 and located inside the bearing seat 33.

[0039] The bearing housing 33 is threadedly connected to an end cap 34 at the end furthest from the passive sprocket 23.

[0040] The end cap 34 is simultaneously fitted onto the outer surface of the cylinder 6 at the position of the baffle. With this design, the end cap 34 fixes the cylinder 6 to the bearing seat 33.

[0041] A feed inlet 7 is provided on the outer surface of the cylinder 6 near the bearing seat 33. The feed inlet 7 extends through the cylinder 6 and the screw sleeve 5 to the position between the screw 4 and the screw sleeve 5.

[0042] In this embodiment, the feed inlet 7 is configured as a funnel shape, which facilitates the addition of grain materials between the screw 4 and the screw sleeve 5.

[0043] The screw 4 is driven by motor 2 to rotate, which completes the shearing and pushing of the grains. Then, the grains that have been initially sheared and rubbed are continuously pushed to the position between the machine head 8 and the screw 4 to complete the grinding.

[0044] The specific structural principle of the shearing and grinding of the screw 4, the screw sleeve 5, and the head 8 is well known in the prior art and will not be described in detail here.

[0045] In this embodiment, the automatic temperature control device 9 is a fully enclosed cylindrical heater, which can be purchased commercially from Shenzhen Yinfeng Electronics Technology Co., Ltd. as an FGDH type fully enclosed cylindrical heater, which is directly wrapped around the outer surface of the cylinder 6, enabling precise automatic temperature control.

[0046] The outer surface of the cylinder 6 is also provided with a control system for controlling the operation of the extruder (not shown in the figure). The control terminal of the automatic temperature control device 9 is electrically connected to the control system, and the control terminal of the motor 2 is electrically connected to the control system.

[0047] In the initial stage of use, the automatic temperature control device 9 at the machine head 8 on the outer surface of the cylinder 6 is first turned on until the temperature reaches the preset working requirements. Then, the start motor 2 is controlled to drive the drive shaft 3 to rotate under the transmission action of the main sprocket 21, the transmission chain 22 and the driven sprocket 23. This drives the screw 4 to rotate, and at the same time, the grain material is added into the feed inlet 7. The material is fed under the rotation of the screw 4. The raw material is initially sheared and pushed by the screw 4 and the screw sleeve 5 to the preheated machine head 8 and the screw 4. After being ground and cooked into a paste-like liquid at high temperature in the machine head 8 and the screw 4, it is sprayed out through the spray hole of the mold 10. This ensures that the temperature of the machine head 8 is constant during operation, ensuring the machine's operating temperature and preventing blockage.

[0048] The specific structure and working principle of the mold 10 are well known in the prior art and will not be described in detail here.

[0049] For those skilled in the art, any changes, modifications, substitutions, and variations made to the embodiments based on the teachings of this utility model, without departing from the principles and spirit of this utility model, still fall within the protection scope of this utility model.

Claims

1. A small household extrusion grain puffing machine, comprising a base (1), characterized in that: A motor (2) is fixedly installed on the base (1). The power output end of the motor (2) is connected to a drive shaft (3). A rotating component is provided on the outer surface of the drive shaft (3). A screw (4) is detachably connected to the other end of the drive shaft (3). A screw sleeve (5) is provided on the outer surface of the screw (4). The screw sleeve (5) and the screw (4) are nested together. A cylinder (6) is fixedly installed on the outer surface of the screw sleeve (5). The cylinder (6) is fixedly installed on the rotating component. A machine head (8) is provided on the outer surface of the screw (4). The machine head (8) is fixedly installed on the inner wall of the cylinder (6). An automatic temperature control device (9) is provided at the corresponding position on the outer surface of the cylinder (6) and the discharge end of the machine head (8) is detachably installed with a mold (10).

2. The small-scale extrusion grain puffing machine for household use according to claim 1, characterized in that: The drive shaft (3) is arranged parallel to the power output shaft of the motor (2), and the drive shaft (3) is simultaneously mounted on the base (1) above the motor (2).

3. A small-scale extrusion grain puffing machine for home use according to claim 2, characterized in that: A main sprocket (21) is fixedly installed on the power output shaft of the motor (2), and a driven sprocket (23) is fixedly installed at the end of the drive shaft (3) corresponding to the main sprocket (21). The outer surfaces of the main sprocket (21) and the driven sprocket (23) are meshed with the same transmission chain (22).

4. A small-scale extrusion grain puffing machine for home use according to claim 3, characterized in that: The outer surface of the drive shaft (3) is stepped at one end away from the passive sprocket (23).

5. A small-scale extrusion grain puffing machine for home use according to claim 4, characterized in that: The rotating assembly includes a first bearing (35) sleeved on the stepped position of the outer surface of the drive shaft (3), a bearing spacer (32) sleeved on the outer surface of the drive shaft (3) near the first bearing (35), and a second bearing (31) sleeved on the outer surface of the drive shaft (3) near the bearing spacer (32). The same bearing seat (33) is fixedly installed on the outer surfaces of the first bearing (35), the bearing spacer (32) and the second bearing (31).

6. A small-scale extrusion grain puffing machine for home use according to claim 5, characterized in that: A baffle is provided at one end of the cylinder (6) near the first bearing (35).

7. A small-scale extrusion grain puffing machine for home use according to claim 6, characterized in that: The bearing housing (33) is threaded with an end cap (34) at the end away from the passive sprocket (23), and the end cap (34) is also fitted on the outer surface of the cylinder (6) at the baffle position.

8. A small-scale extrusion grain puffing machine for home use according to claim 7, characterized in that: The cylinder (6) has a feed inlet (7) on its outer surface near the bearing seat (33). The feed inlet (7) extends through the cylinder (6) and the screw sleeve (5) to the position between the screw (4) and the screw sleeve (5).

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