Vertical safety supply screw kneader

Abstract

The present invention relates to a vertical safety supply screw mixer that allows dough introduced into a hopper to be supplied more smoothly to the nozzle side without stagnation or accumulation inside the hopper through mechanical operation by collision, impact, forced friction rotational force, and cutting between two contacting objects. The composition comprises: a supply hopper into which dough is introduced on the upper side and a nozzle is mounted on the lower side; a reduction gear installed on a horizontal support frame on the upper side of the supply hopper to output power from a drive motor in a reduced state in the vertical direction; a supply screw in which the upper part of the supply screw shaft is vertically connected to the reduction gear and the lower part of the supply screw shaft penetrates the supply hopper vertically; and a supply roll installed horizontally inside the supply hopper through one side of the supply hopper and rotates in the direction of dough introduction by receiving power from an electric motor.

Description

Technology Field

[0001] The present invention relates to a vertical safety supply screw mixer, and more specifically, to a vertical safety supply screw mixer that allows dough introduced into a hopper to be supplied more smoothly to the nozzle side without the dough becoming stagnant or accumulating inside the hopper through mechanical operation by collision and impact between two contacting objects, forced frictional rotational force, and cutting. Background Technology

[0003] As is well known, there is an extrusion screw dough mixer that mixes various grains and water in appropriate amounts, places the mixture into a dough container, and mechanically stirs and kneads the mixture to obtain a mixture with desired physical properties, and, as shown in FIG. 1, is equipped with a nozzle (220) and a hopper (200a) having a plurality of extrusion holes on the front and rear sides of the machine body (200), respectively, and is equipped with an extrusion screw (not shown) that rotates by receiving power from a rear drive motor inside the machine body (200), thereby forcibly conveying the mixture fed through the hopper (200a) to the nozzle (200) side through the extrusion screw so that the mixture is extruded through the nozzle (220) to make noodles. At this time, in the case of the extrusion screw, the rotating extrusion screw, i.e., the movable part, is exposed through the upper side opening of the hopper (200a), and there are often cases where a hand is put into the hopper or a tool such as a rolling pin is used to forcibly push the mixture in so that the mixture can be conveyed smoothly without stagnation.

[0005] Meanwhile, 'kitchen dough mixers or blenders' fall under the category of 'kitchen electric appliances' pursuant to Article 3 of the Enforcement Rule of the Electrical Appliances and Household Goods Safety Management Act, and are classified as electrical appliances subject to safety certification (for AC power products) or safety verification (for DC power products). Therefore, if a product subject to safety certification (or verification) manufactured after receiving such certification (or verification) fails to meet the safety standards for the product, the safety certification may be revoked (or the validity of the safety verification lost) in accordance with Articles 11 and 20 of the same Act. Furthermore, pursuant to Article 40 of the same Act, the Mayor or Provincial Governor may order the improvement, destruction, recall, or suspension of sales of products subject to safety management that do not meet safety standards.

[0007] In addition, pursuant to Article 11 of the Framework Act on Product Safety, the head of a central administrative agency may order a business operator to recall products, etc., if the business operator causes or is likely to cause harm to the life, body, or property of consumers by changing parts, etc., of a product after obtaining certification or filing a report, verification, etc., as prescribed by individual laws. Furthermore, Article 26 of the same Act stipulates that any person who manufactures or distributes a product falling under the above may be punished by imprisonment for up to three years or a fine of up to 30 million won.

[0009] According to these safety certification regulations, as mentioned above, in the case of a dough mixer where the extrusion screw, which rotates by receiving power from a motor—that is, the moving part—is directly exposed through the opening of the hopper, certification is not permitted, making the manufacture, sale, production, and use of the product itself impossible. Therefore, to obtain certification, the dough must be supplied automatically through the drive of the extrusion screw while the moving part itself is not exposed at all during use. Prior art literature

[0011] 1. Republic of Korea Published Patent No. 10-2022-0017112 (Published Feb. 11, 2022) The problem to be solved

[0012] Accordingly, the present invention is intended to satisfy the safety certification conditions and regulations of the dough mixer described above, and its purpose is to provide a vertical safety supply screw mixer that enables dough introduced into the hopper to be supplied more smoothly to the nozzle side without stagnation or accumulation inside the hopper through mechanical operation caused by collision, impact, forced frictional rotational force, and cutting between two contacting objects. means of solving the problem

[0014] A form of a vertical safety supply screw dough mixer according to the present invention for achieving the purpose of the present invention comprises: a supply hopper into which dough is fed on the upper side and a nozzle is mounted on the lower side; a reduction gear installed on a horizontal support frame on the upper side of the supply hopper to output power from a drive motor in a reduced state in a vertical direction; a supply screw in which the upper part of the supply screw shaft is vertically connected to the reduction gear and the lower part of the supply screw shaft penetrates the supply hopper vertically; and a supply roll installed horizontally inside the supply hopper through one side of the supply hopper and rotates in the direction of dough feeding by receiving power from an electric motor. Effects of the invention

[0016] As described above, the present invention enables the dough introduced into the hopper to be supplied more smoothly to the nozzle side without stagnation or accumulation inside the hopper through mechanical operation by collision, impact, forced frictional rotational force, and cutting between two contacting objects. This eliminates the need for a worker to forcibly press the dough directly with their hands or use tools such as a stick to supply it, thereby protecting the worker from the risk of safety accidents caused by exposure of moving parts and satisfying the conditions of safety certification. Brief explanation of the drawing

[0018] FIG. 1 is a perspective view showing an example of a general screw mixer. FIG. 2 is a photograph showing the overall appearance of a vertical safety supply screw mixer according to the present invention. FIG. 3 is a longitudinal section showing the overall internal configuration of FIG. 2. FIGS. 4 and FIGS. 5 are perspective views showing the connection and coupling states between each of the components of FIGS. 3. FIG. 6 is a perspective view showing the structure of a center mesh constituting the screw connecting means of the present invention. FIG. 7 is a cross-sectional view in a separated state showing the supply hopper structure of the present invention. FIG. 8 is a cross-sectional view showing the supply screw structure of the present invention. FIG. 9 is a cross-sectional view showing the pressure screw structure of the present invention. Specific details for implementing the invention

[0019] The advantages and features of the embodiments of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0021] In describing the embodiments of the present invention, specific descriptions of known functions or configurations will be omitted if it is determined that such detailed descriptions could unnecessarily obscure the essence of the invention. Furthermore, the terms described below are defined in consideration of their functions in the embodiments of the present invention, and these may vary depending on the intentions or practices of the user or operator; therefore, their definitions should be based on the content throughout this specification.

[0023] Hereinafter, a vertical safety supply screw mixer according to the present invention will be described in detail according to an embodiment with reference to the attached drawings.

[0025] FIG. 2 is a photograph showing the overall exterior of a vertical safety supply screw mixer according to the present invention, FIG. 3 is a cross-sectional view showing the overall internal configuration of FIG. 2, FIG. 4 and FIG. 5 are perspective views showing the connection and coupling state between each configuration of FIG. 3. As shown in the figures, the present invention has a reduction gear (2) installed on the upper support frame (P) of the main body (B) of the machine and the reduction gear (2) is connected to a drive motor (M1). At this time, the reduction gear (2) is configured to receive power from the drive motor (M1) by belt transmission and output a reduced rotational force toward the vertical lower side.

[0027] In addition, a supply hopper (1) is provided on the lower side of the support frame (P), and the supply hopper (1) is configured such that dough is fed into the upper side and a nozzle (10) is mounted on the lower side, and is supported and fixed to the support frame (P) by a plurality of support rods (7). Furthermore, a vertical supply screw (3) is provided, wherein the upper part of the supply screw shaft (31) of the supply screw (3) is connected vertically to the reduction gear (2), and the lower part of the supply screw shaft (31) is configured to penetrate the supply hopper (1) vertically. Along with this, a supply roll (4) penetrates one side of the supply hopper (1) and is installed horizontally inside the supply hopper (1), and the supply roll (4) receives power from an electric motor (M2) and rotates in the direction of dough supply, at which time an irregularity (4a) may be formed on the surface of the supply roll (4).

[0029] The above supply screw (3) further has a pusher (32) integrally formed on the upper side supply screw shaft (31) of the supply roll (4), and the pusher (32) is formed to protrude outwardly in a horizontal direction from the supply screw shaft (31) and is configured to rotate together with the supply screw shaft (31). In addition, the supply screw (3) has a supply wing (33) integrally formed on the supply screw shaft (31) inside the supply hopper (1), and the supply wing (33) is formed in a spiral shape along the outer side of the supply screw shaft (31) in the form of a thin plate, and rotates together with the supply screw shaft (31) to simultaneously perform forced pumping of the dough and lateral cutting of the dough.

[0031] Additionally, the supply screw (3) further includes a pressure screw (34) connected vertically to the lower end, and the supply screw (3) and the pressure screw (34) are connected and supported by a screw connecting means (5). The screw connecting means (5) is configured to rotatably support the supply screw (3) and to transmit the rotational force of the supply screw (3) to the pressure screw (34). The screw connecting means (5) is intended to ensure straightness according to the length of the supply screw shaft (31) of the supply screw (3). As the shaft length increases, it becomes difficult to achieve straightness, and the amount of eccentricity inevitably increases. Accordingly, the present invention also determines the length of the supply screw shaft (31) to minimize the amount of eccentricity and ensure ease of processing according to straightness, and connects it to the pressure screw (34), thereby providing the advantage of enabling more stable and accurate rotational operation of the screw.

[0033] As shown in FIG. 7, the supply hopper (1) is configured to be assembled and disassembled by separating it into an upper hopper body (11), a middle hopper body (12), and a lower hopper body (13). The upper hopper body (11) has an inverted triangular shape with a wider top and a narrower bottom structure with a cut bottom, and the middle hopper body (12) has an inverted triangular shape with an upper side opening equal to the lower diameter of the upper hopper body (11), and is formed with a structure in which the lower side forms a vertical tube shape. The lower hopper body (13) is formed as a vertical cylinder with a diameter equal to the lower side vertical tube of the middle hopper body (12). These are joined together by fitting the flanges (16) formed at their respective upper and lower ends together and fastening them with bolts through the bolt fastening holes (17) formed in the flanges (16).

[0035] Meanwhile, the supply hopper (1) further includes an auxiliary hopper (14) on the upper side, and the upper side opening of the auxiliary hopper (14) is configured to be blocked from the outside by a safety wall (6). The safety wall (6) is in the form of a fence, with walls built on all four sides of the upper side opening of the auxiliary hopper (14) and a dough input opening (61) formed on one side to prevent human hands from passing through. Additionally, the front of the safety wall (6) is formed with a transparent checkered door (62) so that a worker can identify the dough condition from the outside of the machine. During inspection and repair, the machine's operation is stopped, the checkered door (62) is opened to perform the work, and then the machine is closed again to block from the outside.

[0037] FIG. 6 is a perspective view showing the structure of a center mesh constituting the screw connection means of the present invention, FIG. 7 is a cross-sectional view in a separated state showing the structure of a supply hopper of the present invention, FIG. 8 is a cross-sectional view showing the structure of a supply screw of the present invention, and FIG. 9 is a cross-sectional view showing the structure of a pressure screw of the present invention. The center mesh (51) of FIG. 6 constitutes the screw connection means (5), and has a bushing (51a) provided in the central part and a plurality of dough penetration holes (51e) along the outer edge of the bushing (51a). To explain this more specifically, the center mesh (51) has a bushing center support ring (51c) formed in the central part of a circular center mesh outer ring (51b) to which the bushing (51a) is inserted and fixed, and the space between the center mesh outer ring (51b) and the bushing center support ring (51c) is connected by a plurality of supports (51d), and dough penetration holes (51e) are formed in the space between the supports (51d). At this time, when the dough passes through the center mesh (51), it is split by the support (51d) and passes through the dough penetration hole (51e), but since it is supplied to the nozzle (10) in a reassembled state while passing through the pressure screw (34) and reaching the nozzle (10), it does not have a significant effect on the physical properties.

[0039] Additionally, a stepped center mesh seating groove (52) is formed at the upper end of the pressure screw shaft (34a) of the pressure screw (34) to form a screw connecting means (5), and a stepped connecting shaft (53) is integrally formed at the lower end of the supply screw (3) to vertically penetrate the bushing (51a) of the center mesh (51) and be coupled inside the pressure screw shaft (34a) of the pressure screw (34). At this time, the connection between the connecting shaft (53) of the supply screw (3) and the pressure screw shaft (34a) of the pressure screw (34) is formed by a spiral connection. To this end, the pressure screw shaft (34a) has an inner spiral portion (54) and the connecting shaft (53) has an outer spiral portion (55) and is coupled to each other so that the rotational force of the connecting shaft (53) can be transmitted to the pressure screw (34).

[0041] In the present invention configured as described above, the dough introduced into the supply hopper (1) is first rotated in the horizontal dough supply direction around a vertical axis inside the supply hopper (1) by the supply screw (3), and the supply roll (4) is also rotated in the dough supply direction around a horizontal axis. Accordingly, the dough inside the supply hopper (1) frequently collides with the supply roll (4) and splits, and at the same time, the dough adhering to the surface of the supply roll (4) due to friction rotates together with the supply roll (4), causing the supply roll (4) to suck the dough into the interior of the supply hopper (1). Consequently, the forced pumping force by the supply screw shaft (31) of the supply screw (3) and the frictional force by the supply roll (4) act together on the dough, thereby providing the advantage of being able to automatically supply the dough more smoothly without stagnation inside the hopper body (12). In addition, the supply blade (33) of the supply screw (3) that sucks the dough from behind and forcibly conveys it forward is in the form of a thin rotating blade, so as it rotates, it cuts the dough in a horizontal lateral direction, which has the advantage of relieving stagnation caused by clumping of the dough.

[0043] In addition, a horizontal bar (32) formed integrally on the supply screw shaft (31) of the supply screw (3) strikes the dough material fed into the supply hopper (1) in a horizontal direction. At this time, the dough material hits the supply roller (4) and temporarily stops rotating, and then the bar (32) strikes the dough material again from the upper side of the supply roller (4). Consequently, the dough material cannot stay and accumulate, but collapses and splits, forcing it to be pushed into the lower side of the supply hopper (1). Furthermore, the thin supply blade (33) of the supply screw (3), which sucks the dough material from the upper side of the supply hopper (1) and pushes it to the lower side, rotates to cut the dough material in a horizontal lateral direction, thereby preventing delays in dough material supply caused by the dough material sagging and stagnating in the lower side.

[0045] Meanwhile, as the length of the shaft increases, it becomes difficult to maintain straightness, and consequently, the amount of eccentricity inevitably increases. Accordingly, in order to minimize the amount of eccentricity according to the straightness of the supply screw shaft (31) of the supply screw (3) in the present invention, a pressure screw (34) that is separately machined is connected to the lower part of the supply screw shaft (31) to match the distance to the nozzle (10). At this time, the supply screw (3) must be supported so that it can rotate stably, and the conditions must be satisfied that the rotational force of the supply screw (3) can be transmitted to the pressure screw (34).

[0047] Meanwhile, the screw connecting means (5) between the supply screw (3) and the pressure screw (34) is intended to ensure straightness according to the length of the supply screw shaft (31) of the supply screw (3). As the shaft length increases, it becomes difficult to achieve straightness, and the amount of eccentricity inevitably increases. Accordingly, since the length of the supply screw shaft (31) is determined to minimize the amount of eccentricity and facilitate processing according to straightness, and the present invention is connected to the pressure screw (34), it has the advantage of enabling more stable and accurate rotational movement of the screw.

[0049] Thus, the present invention enables the dough introduced into the hopper to be supplied more smoothly to the nozzle side without stagnation or accumulation inside the hopper through mechanical operation by collision, impact, forced frictional rotational force, and cutting between two contacting objects. This eliminates the need for a worker to forcibly press the dough directly with their hands or use tools such as a stick to supply it, thereby protecting the worker from the risk of safety accidents caused by exposure of moving parts and satisfying the conditions of safety certification.

[0051] Although the vertical safety supply screw mixer according to the present invention has been described in detail above, this describes only the most preferred embodiment of the present invention and is not limited thereto, but is defined and limited by the appended claims. Furthermore, anyone with ordinary knowledge in this technical field may make various modifications and imitations based on the description in the specification of the present invention, and it will be evident that such modifications do not deviate from the scope of the present invention. Explanation of the symbols

[0053] 1: Supply hopper 10: Nozzle 11: Upper hopper body 12: Middle hopper body 13: Lower hopper body 14: Auxiliary hopper 15: Supply roll through hole 16: Flange 17: Bolt fastening hole 2: Reducer M1: Drive motor 3: Supply screw 31: Feed screw shaft 32: Pusher 33: Supply blade 34: Pressure screw 34a: Pressure screw shaft 34b: Pressure vane 4: Supply Roll M2: Electric Motor 5: Screw connection means 51: Center mesh 51a: Bushing 51b: Center mesh outer ring 51c: Bushing center support ring 51d: Support 51e: Dough penetration hole 52: Center mesh seating groove 53: Connecting shaft 54: Medial spiral 55: Lateral spiral 6: Safety wall 61: Dough input port 62: Check door

Claims

Claim 1 A vertical safety supply screw dough mixer characterized by comprising: a supply hopper (1) into which dough is fed on the upper side and a nozzle (10) is mounted on the lower side; a reduction gear (2) installed on a horizontal support frame (P) on the upper side of the supply hopper (1) and outputting power from a drive motor (M1) in a reduced state in a vertical direction; a supply screw (3) in which the upper part of a supply screw shaft (31) is connected in a vertical direction to the reduction gear (2) and the lower part of the supply screw shaft (31) penetrates the supply hopper (1) vertically; and a supply roll (4) installed in a horizontal direction inside the supply hopper (1) through one side of the supply hopper (1), and receiving power from an electric motor (M2) to rotate in the direction of dough feeding. Claim 2 A vertical safety supply screw dough mixer according to claim 1, wherein the supply screw (3) further comprises a pusher (32) integrally formed on the supply screw shaft (31) on the upper side of the supply roll (4), and the pusher (32) is formed to protrude outwardly in a horizontal direction from the supply screw shaft (31) and is configured to rotate together with the supply screw shaft (31). Claim 3 A vertical safety supply screw dough mixer according to claim 1, wherein the supply screw (3) further includes a supply blade (33) integrally formed on the supply screw shaft (31) inside the supply hopper (1), and the supply blade (33) is formed in a spiral shape along the outer side of the supply screw shaft (31) in the form of a thin plate, and is configured to rotate together with the supply screw shaft (31) to simultaneously perform forced pumping of dough and lateral cutting of dough. Claim 4 A vertical safety supply screw mixer according to claim 1, wherein the supply screw (3) further includes a pressure screw (34) connected vertically to the lower end, and a screw connecting means (5) is provided between the supply screw (3) and the pressure screw (34), and the screw connecting means (5) is configured to rotatably support the supply screw (3) and transmit the rotational force of the supply screw (3) to the pressure screw (34). Claim 5 In claim 4, the screw connecting means (5) is characterized by being composed of: a center mesh (51) having a bushing (51a) in the center and a plurality of dough penetration holes (51e) along the outer edge of the bushing (51a); a stepped center mesh seating groove (52) formed at the upper end of the pressure screw shaft (34a) of the pressure screw (34); a stepped connecting shaft (53) formed integrally at the lower end of the supply screw (3) and vertically penetrating the bushing (51a) of the center mesh (51) to be coupled inside the pressure screw shaft (34a) of the pressure screw (34); an inner spiral portion (54) formed on the lower inner side of the center mesh seating groove (52) of the pressure screw (34); and an outer spiral portion (55) formed on the outer side of the connecting shaft (53) of the supply screw (3) and coupled to the inner spiral portion (54).

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