Rotary pulp cooker with steam heating

Abstract

The present invention relates to the technical field of cookware, and more specifically, to a rotary pulping machine with steam heating for the production of soy milk and soy products. It comprises an inner pot and an outer pot which are fitted together, with an interlayer between the inner pot and the outer pot, a roller for supporting the inner pot is arranged in the interlayer between the inner pot and the outer pot, the bottom of the inner pot is fixedly connected to a rotating shaft, the lower end of the rotating shaft passes through the outer pot and is transmission-connected to a driving device; the outer wall of the outer pot is fixedly connected to a horizontally arranged rotating shaft, and the rotating shaft is installed on a bracket through a bearing; a shell opening communicating with the interlayer is arranged on one side wall of the outer pot, and a smoke exhaust port is arranged on the other side wall of the outer pot opposite to the shell opening. The rotary pulping machine with steam heating is simple and practical, with high thermal efficiency, uniform heating temperature, good stirring effect, and stable product quality.

Description

Technical Field

[0001] The invention relates to the technical field of cookers, and more particularly to a rotary pulp cooker with steam heating for producing soybean milk and soybean products. Background Art

[0002] Soybeans are high in nutritional value and are often used to make soy milk, tofu pudding and other foods or drinks. Since soybeans contain a lot of protein, they taste bad when eaten raw or undercooked and are not easily absorbed by the human body. Excessive heating temperatures can easily lead to protein denaturation. In the process of making soy milk and tofu pudding, it is required to heat evenly and avoid excessive local temperatures. If the heating is uneven during the cooking process, it is easy to cause lumps and pot sticking. In addition, the tiny soybean particles in the soy milk are easy to settle to the bottom of the pot, which exacerbates the occurrence of lumps and pot sticking.

[0003] Another Chinese patent I applied for, 2020106486165, discloses an "integrated pulp cooker" with a publication number of CN111567624A. The pulp cooker is provided with a distribution bin at the bottom of the pot body and above the furnace, and the distribution bin and the furnace are connected by a short tube. The flame of fuel combustion is divided into multiple heating points to heat the bottom of the pot body through multiple short tubes distributed at the bottom of the pot body, which is conducive to ensuring uniform heating of the bottom of the pot; at the same time, the water jacket is fully utilized to absorb the waste heat generated by the combustion of fuel in the furnace to improve thermal efficiency. After the water in the water jacket is heated, water vapor is injected into the slurry in the pot body for auxiliary heating. While heating, the slurry is promoted to circulate, which is conducive to uniform heating of the slurry and avoids agglomeration and sticking of the pot due to uneven local heating. Due to the use of decentralized point heating, the slurry is evenly heated, and the temperature in the pot body is easy to control. Although this integrated pulp cooker solves the problem of uniform heating of the pot bottom to a certain extent, the structure between the pot bottom and the furnace is extremely complicated due to the addition of a distribution bin and a short pipe. After long-term use, the dirt and ash on the pot bottom cannot be cleaned, which not only reduces the thermal efficiency of combustion, but also further deteriorates the uniformity of heat conduction at the pot bottom, affecting the uniform heating of the pulp. In addition, after the steam generated by the water jacket is passed into the pulp, although it can play a certain stirring role, the stirring is not thorough enough. The parts far away from the steam pipe mouth, especially the parts close to the pot bottom and the inner wall, cannot be stirred at all, and the phenomenon of sticking the pot is still easy to occur. Summary of the invention

[0004] In view of the above technical problems, the purpose of the present invention is to provide a rotary pulping machine with steam heating for the production of soy products with high thermal efficiency, uniform heating temperature, good stirring effect and stable product quality.

[0005] The rotary pulp cooker with steam heating described in the present invention comprises an inner pot and an outer shell which are sheathed together, with an interlayer between the inner pot and the outer shell, a roller for supporting the inner pot is arranged in the interlayer between the inner pot and the outer shell, the bottom of the inner pot is fixedly connected to a first rotating shaft, the lower end of the first rotating shaft passes through the outer shell and is transmission-connected to a driving device; the outer wall of the outer shell is fixedly connected to a horizontally arranged second rotating shaft, and the second rotating shaft is installed on a bracket through a bearing; a shell opening connected to the interlayer is arranged on one side wall of the outer shell, and a smoke exhaust port is arranged on the other side wall of the outer shell opposite to the shell opening; a steam chamber and a heat exchange pipe are arranged in the interlayer between the inner pot and the outer shell, the heat exchange pipe is a plurality of C-shaped pipes arranged around the inner pot, and both ends of the heat exchange pipe are connected to the steam chamber.

[0006] Preferably, the shell opening is a strip-shaped through hole extending from the bottom of the shell to the middle section of the side wall, and the outer side of the shell opening is covered with a fire channel, which is a U-shaped groove buckled on the shell opening.

[0007] Preferably, an annular end cover covering the interlayer is provided at the upper opening of the shell.

[0008] Preferably, the second rotating shaft is rotatably mounted on a shaft seat, and the shaft seat is fixedly mounted on the upper end of the bracket; a worm wheel is fixedly mounted on the second rotating shaft, a worm bracket is fixedly connected to the shaft seat, a worm is mounted on the worm bracket, and the worm is constantly meshed with the worm wheel.

[0009] Preferably, the steam chamber includes a steam chamber bottom plate and an annular steam chamber side wall arranged around the steam chamber bottom plate, the steam chamber bottom plate is an arc-shaped plate structure parallel to the outer wall of the inner pot and with a certain gap therefrom, the steam chamber side wall is fixedly connected between the edge of the steam chamber bottom plate and the inner wall of the outer shell, and the two ends of the heat exchange tube are respectively fixedly connected to the steam chamber side walls on both sides of the steam chamber.

[0010] Preferably, the smoke exhaust port extends through the steam chamber to a gap between the bottom plate of the steam chamber and the outer side wall of the inner pot.

[0011] After adopting the above technical scheme, the pulp cooker uses a rotating inner pot to achieve uniform heating without stirring. Compared with a pulp cooker with an agitator, the heating is more uniform, the pot is not easy to stick, the thermal efficiency is higher, and the product quality is stable; the heat exchange tube can recover a large amount of waste heat and use it as steam-assisted heating to further improve the thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0013] Figure 2 yes Figure 1 AA cross-sectional structure schematic diagram.

[0014] Figure 3 yes Figure 1 A schematic diagram of the partial cross-sectional structure of an embodiment.

[0015] Figure 4 It is a schematic structural diagram of another embodiment.

[0016] Figure 5 yes Figure 4 Schematic diagram of the BB cross-sectional structure. DETAILED DESCRIPTION

[0017] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0018] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0019] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0020] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0021] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0022] like Figure 1 , Figure 2 As shown, the rotary pulping machine with steam heating of the present invention comprises an inner pot 1 and an outer shell 2 which are sheathed together. The inner pot 1 and the outer shell 2 have the same shape, both of which are cylindrical structures with bottoms. The outer diameter of the inner pot 1 is smaller than the inner diameter of the outer shell 2, and there is an interlayer between the two. Rollers 3 supporting the inner pot 1 are arranged in the interlayer between the inner pot 1 and the outer shell 2. A plurality of rollers 3 are evenly distributed around the inner pot 1. The rollers 3 are rotatably mounted on the outer shell 2 through axles on both sides. The axles of the rollers 3 are parallel to the central axis of the inner pot 1. The edges of the rollers 3 abut against and are supported on the side walls of the inner pot 1. When the inner pot 1 rotates around its central axis, the rollers 3 rotate along with it. The annular support structure formed by the plurality of rollers 3 can not only support the weight of the inner pot 1, but also rotate along with the inner pot 1 to reduce the resistance to rotation.

[0023] The bottom of the inner pot 1 is fixedly connected to the first rotating shaft 4, and the first rotating shaft 4 is arranged on the central axis of the inner pot 1. The lower end of the first rotating shaft 4 passes through the outer shell 2 and is transmission-connected to the driving device 61. The upper end of the first rotating shaft 4 is directly welded to the bottom center position of the inner pot 1. Of course, it can also be connected to the bottom center position of the inner pot 1 through a flange and bolts; when the driving device 61 drives the inner pot 1 to rotate through the first rotating shaft 4, the outer shell 2 remains stationary. For this purpose, a bearing hole for accommodating the first rotating shaft 4 is provided at the bottom of the outer shell 2, and a bearing is installed in the bearing hole, and the first rotating shaft 4 is inserted in the center hole of the bearing.

[0024] like Figure 1 , Figure 4 As shown, the driving device 61 includes a hydraulic motor 63 fixedly mounted on the bottom of the housing 2 through a bracket 62, a driving gear 64 fixedly mounted on the output end of the hydraulic motor 63, and a driven gear 65 fixedly mounted on the lower end of the first rotating shaft 4, and the driving gear 64 and the driven gear 65 are always meshed. When the hydraulic motor 63 is working, the driving gear 64 is driven to rotate, and the driving gear 64 in turn drives the first rotating shaft 4 and the inner pot 1 to rotate through the driven gear 65.

[0025] like Figure 3 As shown, the outer wall of the shell 2 is fixedly connected to the horizontally arranged second rotating shaft 9, and two second rotating shafts 9 are symmetrically arranged on both sides of the outer wall of the shell 2 to support the weight of the shell 2. The second rotating shaft 9 is installed on the bracket 5 through a bearing; the bracket 5 is a stable triangular or trapezoidal frame structure, and the shaft seat 10 is fixedly installed on the upper end thereof, and the second rotating shaft 9 is installed on the shaft seat 10 through a bearing. In this way, the second rotating shaft 9 is rotatably installed on the shaft seat 10, and the rotation of the second rotating shaft 9 can drive the shell 2 to rotate together with the inner pot 1. After the slurry is cooked, when the slurry needs to be discharged, the second rotating shaft 9 is rotated to tilt the shell 2 and the inner pot 1 forward, the bottom is raised, and the front end is lowered, so that the soy milk in the inner pot 1 can be poured into other containers.

[0026] like Figure 3As shown, a worm wheel 91 is fixedly mounted on the second rotating shaft 9, a worm support 92 is fixedly connected to the shaft seat 10, a worm 93 is mounted on the worm support 92, the worm 93 is rotatably supported on the worm support 92, and the worm 93 is always meshed with the worm wheel 91. Of course, the two second rotating shafts 9 located on both sides of the outer shell 2 can be installed with a worm gear mechanism on one of them. When in use, a hand wheel is installed on the worm 93, and the worm 93 is rotated by the hand wheel to drive the worm wheel 91 and the second rotating shaft 9 to rotate, thereby driving the outer shell 2 and the inner pot 1 to rotate and tilt. When boiling the slurry, adjust the hand wheel so that the outer shell 2 and the inner pot 1 are tilted at 30 degrees to 45 degrees, which can not only facilitate the pouring of the ground raw soy milk into the inner pot 1, but also facilitate the observation of the soy milk through the opening of the inner pot 1. After the boiling is completed, adjust the hand wheel again to lower the opening of the inner pot 1, and then pour out the soy milk.

[0027] A shell opening 6 connected to the interlayer is provided on one side wall of the shell 2, and a smoke outlet 8 is provided on the other side wall of the shell 2 opposite to the shell opening 6. When boiling pulp, the shell 2 and the inner pot 1 are inclined at 30-45 degrees, the shell opening 6 is at the lowest end of the shell 2, and the smoke outlet 8 on the other side is at the high end. The shell opening 6 is a strip-shaped through hole extending from the bottom of the shell 2 to the middle section of the side wall, and the outer side of the shell opening 6 is covered with a fire channel 7, which is a U-shaped groove buckled on the shell opening 6. When in use, a burner such as a natural gas or liquefied gas stove head is provided at the shell opening 6 to heat the inner pot 1. A blower 99 can also be provided at the shell opening 6 to blow air to the shell opening 6 to assist combustion. Of course, in order not to affect the rotation of the shell 2, the blower 99 can be fixedly connected to the outer wall of the shell 2 through a bracket, and the blower 99 rotates together with the shell 2 when the shell 2 rotates. The flame ejected from the burner heats the inner pot 1, and the hot air rises along the interlayer between the outer shell 2 and the inner pot 1, and is finally discharged through the smoke exhaust port 8. During the heating process, the inner pot 1 rotates continuously, and the heating surface of the bottom of the inner pot 1 facing the fire port changes continuously, which stirs the soybean milk in the inner pot 1 while heating it evenly, so as to heat the soybean milk evenly, avoid the phenomenon of sticking or undercooking caused by excessive local temperature difference, and improve product quality.

[0028] In addition, an annular end cover 21 covering the interlayer is provided at the upper opening of the housing 2. The end cover 21 covers the upper end of the interlayer to prevent debris from falling into the interlayer and hindering the operation of the roller 3.

[0029] like Figure 4 , 5 As shown, as another embodiment of the present invention, a steam chamber 11 and a heat exchange tube 12 are arranged in the interlayer between the inner pot 1 and the outer shell 2. The heat exchange tube 12 is a plurality of C-shaped tubes arranged around the inner pot 1, and both ends of the heat exchange tube 12 are connected to the steam chamber 11.

[0030] The steam chamber 11 includes a steam chamber bottom plate 111 and an annular steam chamber side wall 112 arranged around the steam chamber bottom plate 111. The steam chamber bottom plate 111 is an arc-shaped plate structure parallel to the outer wall of the inner pot 1 and with a certain gap therebetween. The steam chamber side wall 112 is fixedly connected between the edge of the steam chamber bottom plate 111 and the inner wall of the outer shell 2. The two ends of the heat exchange tube 12 are respectively fixedly connected to the steam chamber side walls 112 on both sides of the steam chamber 11. Of course, a water injection pipe connected to the steam chamber 11 is arranged on the outer wall of the outer shell 2 to replenish water into the steam chamber 11. In addition, an open breathing hole should be arranged on the outer wall of the outer shell 2 at the upper end of the steam chamber 11 to release the pressure in the steam chamber 11 so that it can always maintain normal pressure. The steam generated by the steam chamber 11 can be introduced into the soy milk in the inner pot 1 through a stainless steel hose, and the soy milk is heated with steam assistance.

[0031] In this embodiment, the smoke outlet 8 extends through the steam chamber 11 to the gap between the steam chamber bottom plate 111 and the outer side wall of the inner pot 1. In this way, the water in the steam chamber 11 can absorb the residual heat of the smoke outlet 8, thereby improving the thermal efficiency.

[0032] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A rotary pulping machine with steam heating, comprising an inner pot (1) and an outer pot (2) which are sheathed together, wherein a layer is provided between the inner pot (1) and the outer pot (2), and wherein: A roller (3) for supporting the inner pot (1) is arranged in the interlayer between the inner pot (1) and the outer shell (2); the bottom of the inner pot (1) is fixedly connected to a first rotating shaft (4); the lower end of the first rotating shaft (4) passes through the outer shell (2) and is transmission-connected to a driving device (61); the outer wall of the outer shell (2) is fixedly connected to a horizontally arranged second rotating shaft (9); the second rotating shaft (9) is mounted on a bracket (5) via a bearing; a shell opening (6) communicating with the interlayer is arranged on one side wall of the outer shell (2); a smoke exhaust port (8) is arranged on the other side wall of the outer shell (2) opposite to the shell opening (6); a steam chamber (11) and a heat exchange tube (12) are arranged in the interlayer between the inner pot (1) and the outer shell (2); the heat exchange tube (12) is a plurality of C-shaped tubes arranged around the inner pot (1); both ends of the heat exchange tube (12) are connected to the steam chamber (11).

2. The rotary pulp cooker with steam heating according to claim 1, characterized in that: The shell opening (6) is a strip-shaped through hole extending from the bottom of the shell (2) to the middle section of the side wall. The outer side of the shell opening (6) is covered with a fire channel (7). The fire channel (7) is a U-shaped groove that is buckled on the shell opening (6).

3. The rotary pulp cooker with steam heating according to claim 1 or 2, characterized in that: An annular end cover (21) covering the interlayer is provided at the upper opening of the outer shell (2).

4. The rotary pulp cooker with steam heating according to claim 1 or 2, characterized in that: The second rotating shaft (9) is rotatably mounted on a shaft seat (10), and the shaft seat (10) is fixedly mounted on the upper end of the bracket (5); a worm wheel (91) is fixedly mounted on the second rotating shaft (9), a worm support (92) is fixedly connected to the shaft seat (10), a worm (93) is mounted on the worm support (92), and the worm (93) is constantly meshed with the worm wheel (91).

5. The rotary pulp cooker with steam heating according to claim 1, characterized in that: The steam chamber (11) comprises a steam chamber bottom plate (111) and an annular steam chamber side wall (112) arranged around the steam chamber bottom plate (111); the steam chamber bottom plate (111) is an arc-shaped plate structure parallel to the outer wall of the inner pot (1) and with a certain gap therebetween; the steam chamber side wall (112) is fixedly connected between the edge of the steam chamber bottom plate (111) and the inner wall of the outer shell (2); and the two ends of the heat exchange tube (12) are respectively fixedly connected to the steam chamber side walls (112) on both sides of the steam chamber (11).

6. The rotary pulp cooker with steam heating according to claim 5, characterized in that: The smoke exhaust port (8) penetrates the steam chamber (11) and extends into the gap between the bottom plate (111) of the steam chamber and the outer wall of the inner pot (1).

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