A concentrating device for preparing peptone

Abstract

The present application relates to the technical field of peptone preparation, and more particularly to a concentrating device for preparing peptone, comprising a vertically arranged tank body connected to a feed pipe, a discharge pipe, and a vacuum pump, a screw conveyor and an outer spiral blade coaxially arranged within the tank body, a feed inlet located at the lower end of the outer spiral blade at the lower end of the screw conveyor, and a plurality of first spray nozzles located above the outer spiral blade at the upper end of the screw conveyor; the outer spiral blade is sleeved on the screw conveyor and embedded within the tank body, a first oil guide cavity in which heat transfer oil flows is provided between the upper and lower spiral surfaces of the outer spiral blade, and a first oil inlet pipe and a first oil outlet pipe connected to the first oil guide cavity and extending out of the tank body are connected to the outer spiral blade. The present application can increase the concentration rate of the feed liquid.

Description

Technical Field

[0001] The present application relates to the technical field of peptone preparation, and in particular to a concentrating device for preparing peptone. Background Art

[0002] Peptone is made from fresh bones through a process of enzymatic hydrolysis, filtration, purification, concentration, and spray drying. Concentration of peptone is a crucial step in the production process.

[0003] Through searching, Chinese patent announcement number CN209286716U discloses a low-temperature vacuum extraction and concentration device, which consists of a tank body, a tank cover, an agitator, a feed pipe, a discharge pipe, a circulation injection device, a vacuum pump, a stainless steel pipe, a bracket, a PLC controller, and a diaphragm pump. The tank body is a double-layer corrosion-resistant stainless steel structure with an insulation layer in the middle; the tank body is provided with an observation window and a temperature sensor, a vacuum gauge is provided on the top of the tank body, and a heating rod is installed at the bottom of the tank body. The equipment is equipped with a vacuum pump and a heating device, which can be used in conjunction to achieve extraction and concentration of the liquid at a lower temperature, retaining the effective ingredients in the raw materials to the greatest extent; during the extraction and concentration process, the circulation injection device is started, and the liquid at the bottom of the tank is pumped to the spherical nozzle at the top of the tank through the circulation pipe, so that the liquid forms a mist, increases the evaporation area, thereby improving efficiency and shortening the concentration time.

[0004] Regarding the above-mentioned related technologies, the inventors found the following defects: the heating rod is arranged at the bottom of the tank body, so the temperature at the top of the tank body will be lower than the temperature at the bottom of the tank body, and the mist liquid sprayed from the top of the tank body will not be able to obtain a good heating effect, and the concentration speed will be limited; in addition, the circulation amount of the liquid in the circulating injection device per unit time is limited, resulting in the liquid at the top of the tank body cannot be quickly heated to the specified temperature by the heating rod, further affecting the concentration speed, and therefore needs to be improved. Summary of the Invention

[0005] In order to increase the concentration rate of the feed liquid, the present application provides a concentrating device for preparing peptone.

[0006] The present application provides a concentrating device for preparing peptone, which adopts the following technical solution: a concentrating device for preparing peptone, comprising a tank body arranged vertically and connected to a feed pipe, a discharge pipe and a vacuum pump, a screw conveyor and an outer spiral blade are coaxially arranged in the tank body, the lower end of the screw conveyor is provided with a feed port located at the lower end of the outer spiral blade, and the upper end of the screw conveyor is connected to a plurality of first spray heads located above the outer spiral blade; the outer spiral blade is sleeved on the screw conveyor and embedded in the tank body, a first oil guide cavity with heat transfer oil flowing is provided between the upper spiral surface and the lower spiral surface of the outer spiral blade, and the outer spiral blade is connected to a first oil inlet pipe and a first oil outlet pipe connected to the first oil guide cavity and extending out of the tank body.

[0007] Optionally, the upper end of the screw conveyor is connected to a plurality of second spray heads through a connecting pipe located above the first spray head, the connecting pipe is connected to an air pipe, and the air pipe is provided with a first one-way valve that only allows gas to flow from the air pipe to the connecting pipe; the second spray head is connected to a bubble tube that passes through the outer spiral blade, and the lower part of the bubble tube is provided with a plurality of bubble ports, and the bubble port is provided with a second one-way valve that only allows mist liquid to be sprayed from the inside of the bubble tube to the outside of the bubble tube.

[0008] Optionally, the spraying direction of the second spray head is the same as the axial direction of the bubble tube.

[0009] Optionally, the bubble tube and the movement trajectory of the mist liquid sprayed by the first spray head are staggered.

[0010] Optionally, the screw conveyor includes a motor arranged on the outer wall of the tank body, a fixed cylinder and a rotating shaft arranged coaxially with the tank body, the feed port is arranged at the lower part of the fixed cylinder, and the first spray head is arranged at the top of the fixed cylinder; the rotating shaft rotates around its own axis and is connected to the tank body, and an inner spiral blade is provided on the rotating shaft, and the inner spiral blade is rotated and embedded in the fixed cylinder; one end of the rotating shaft extends out of the tank body and is provided with a gear on the output shaft of the motor, and the two gears are engaged with each other.

[0011] Optionally, a second oil guide cavity is provided inside the rotating shaft, and the rotating shaft rotates around its own axis to be connected to a second oil inlet pipe and a second oil outlet pipe connected to the second oil guide cavity and extending out of the tank body, and the second oil outlet pipe is connected to the first oil inlet pipe.

[0012] Optionally, a spiral embedding groove is provided on the outer wall of the screw conveyor, and the inner side of the outer spiral blade is open and embedded in the embedding groove.

[0013] Optionally, all the first spray heads are arranged in a spiral shape around the axis of the tank body, and the spiral line of the arrangement trajectory of the first spray heads is the same as the pitch of the outer spiral blade.

[0014] In summary, this application has the following beneficial technical effects:

[0015] 1. The heat transfer oil will pass through the second oil inlet pipe, the second oil guide cavity, the second oil outlet pipe, the first oil inlet pipe, the first oil guide cavity and the first oil outlet pipe in sequence, so that the heat transfer oil can heat the liquid in each area of ​​the tank body, ensuring that the liquid in the tank body can be heated evenly, and increasing the heating area of ​​the liquid and improving the concentration speed of the liquid;

[0016] 2. The liquid at the bottom of the tank will be sprayed out through the first spray head. The mist liquid sprayed out by the first spray head will spiral downward in the spiral cavity, which will increase the movement path of the mist liquid. Therefore, the mist liquid can be heated for a longer time, and the volume of the mist liquid will become larger. Therefore, the mist liquid will have a larger heating area, thereby further improving the concentration speed of the liquid.

[0017] 3. The liquid at the bottom of the tank will also be sprayed into the bubble tube through the second spray head, and the mist liquid mixed with gas will be sprayed into the liquid at the bottom of the outer spiral blade through the bubble port, so that a large number of bubbles are formed inside the liquid, prompting the liquid to tumble continuously. Therefore, the liquid in each area of ​​the tank can directly contact the spiral surface of the outer spiral blade, so that the liquid can exchange heat evenly with the heat transfer oil, thereby improving the concentration speed of the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the present application;

[0019] Figure 2 It is a schematic cross-sectional view of the overall structure of the embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the interior of the tank in the embodiment of the present application;

[0021] Figure 4 It is a schematic cross-sectional structural diagram of the tank body, screw conveyor and bubble tube in the embodiment of the present application.

[0022] Figure numerals: 1. tank body; 11. feed pipe; 12. discharge pipe; 13. vacuum pump; 14. supporting foot; 15. outer spiral blade; 151. first oil guide chamber; 152. first oil inlet pipe; 153. first oil outlet pipe; 16. spiral chamber; 2. screw conveyor; 21. motor; 22. fixing cylinder; 221. feed port; 222. first spray head; 223. embedded groove; 23. rotating shaft; 231. second oil guide chamber; 232. second oil inlet pipe; 233. second oil outlet pipe; 24. inner spiral blade; 25. gear; 26. connecting pipe; 261. air pipe; 262. first one-way valve; 27. second spray head; 28. bubble tube; 281. bubble port; 282. second one-way valve. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-4 This application is described in further detail.

[0024] The present application discloses a concentrating device for preparing peptone. Figure 1 and Figure 2As shown, a concentrating device for preparing peptone includes a vertically arranged tank body 1, the top of the tank body 1 is connected to a feed pipe 11 and a vacuum pump 13, the bottom of the tank body 1 is connected to a discharge pipe 12 and is equipped with support legs 14.

[0025] A screw conveyor 2 and an outer spiral blade 15 are provided in the tank body 1. The outer spiral blade 15 is coaxially arranged with the tank body 1 and fixedly embedded in the tank body 1. A first oil guide chamber 151 in which heat transfer oil flows is provided between the upper spiral surface and the lower spiral surface of the outer spiral blade 15. The lower end of the outer spiral blade 15 is connected to a first oil inlet pipe 152 extending outside the tank body 1, and the upper end of the outer spiral blade 15 is connected to a first oil outlet pipe 153 extending outside the tank body 1. The first oil inlet pipe 152 and the first oil outlet pipe 153 are both connected to the first oil guide chamber 151.

[0026] During the concentration process of the feed liquid, the feed liquid will enter the tank body 1 through the feed pipe 11, the vacuum pump 13 will pump the interior of the tank body 1 to a specified vacuum degree, and the heat transfer oil will flow into the first oil guide cavity 151 through the first oil inlet pipe 152 and flow out of the first oil guide cavity 151 through the first oil outlet pipe 153. During the flow process, the heat transfer oil will exchange heat with the feed liquid in the tank body 1 through the upper spiral surface and the lower spiral surface of the outer spiral blade 15, ensuring that the feed liquid in the tank body 1 can be evenly heated, and increasing the heating area of ​​the feed liquid, thereby improving the concentration speed of the feed liquid.

[0027] The screw conveyor 2 includes a motor 21 mounted on the outer top wall of the tank body 1, a fixed cylinder 22 and a rotating shaft 23 arranged coaxially with the tank body 1, the outer spiral blade 15 is fixedly sleeved on the fixed cylinder 22, the lower end surface of the fixed cylinder 22 is mounted on the inner bottom wall of the tank body 1, the lower end side of the fixed cylinder 22 is provided with a feed port 221, and the upper end side of the fixed cylinder 22 is connected to a plurality of first spray heads 222 located above the outer spiral blade 15; the rotating shaft 23 is rotatably connected to the tank body 1 around its own axis, and the inner spiral blade 24 is fixedly sleeved on the rotating shaft 23, and the inner spiral blade 24 is rotatably embedded in the fixed cylinder 22; the upper end of the rotating shaft 23 extends out of the tank body 1 and is fixedly sleeved with a gear 25 on the output shaft of the motor 21, and the two gears 25 are engaged with each other.

[0028] During the process of heating the liquid, the motor 21 will drive the rotating shaft 23 to rotate through the two gears 25, and the rotating shaft 23 will drive the liquid entering the fixed cylinder 22 from the feed inlet 221 through the inner spiral blades 24 to spirally rise in the fixed cylinder 22. During the spiral rising process, the liquid will exchange heat with the outer spiral blades 15 and the heat transfer oil in the first oil guide chamber 151 through the fixed cylinder 22 to improve the heating effect of the liquid and further improve the concentration speed of the liquid.

[0029] The liquid spirally rising to the upper end of the fixed cylinder 22 will be sprayed above the outer spiral leaf 15 through the first spray head 222. Since the liquid at the lower end of the outer spiral leaf 15 can enter the fixed cylinder 22 through the feed inlet 221, the spiral cavity 16 formed by the upper part of the outer spiral leaf 15, the outer side wall of the fixed cylinder 22 and the inner side wall of the tank body 1 will form a certain degree of negative pressure. The mist liquid sprayed from the first spray head 222 will be sucked into the spiral cavity 16 and move spirally downward under the action of suction, so that the movement path of the mist liquid is increased, so the mist liquid can be heated for a longer time, and the volume of the mist liquid will become larger, so the mist liquid will have a larger heating area, thereby further improving the concentration speed of the liquid.

[0030] like Figure 2 and Figure 3 As shown, it is worth noting that all the first spray heads 222 are arranged in a spiral shape around the axis of the tank body 1, so that the liquid moving spirally upward in the fixed cylinder 22 can be sprayed out from each first spray head 222 in turn; the spiral line of the arrangement trajectory of the first spray heads 222 is the same as the pitch of the outer spiral blade 15, so that the mist liquid sprayed from each first spray head 222 is not easy to collide with each other and aggregate into large droplets, ensuring that the mist liquid can have a larger heating area and can float spirally downward in the spiral cavity 16 to ensure the concentration speed of the liquid.

[0031] A spiral embedding groove 223 is provided on the outer wall of the fixed cylinder 22, and the inner side of the outer spiral leaf 15 is open and embedded in the embedding groove 223. Therefore, the heat-conducting oil in the first oil guide chamber 151 can heat the liquid in the fixed cylinder 22 through the outer spiral leaf 15 and the fixed cylinder 22 in sequence, and can also heat the liquid in the fixed cylinder 22 directly through the fixed cylinder 22. The setting of the embedding groove 223 increases the heat exchange area between the outer spiral leaf 15 and the fixed cylinder 22. The three cooperate with each other to further improve the heating effect of the heat-conducting oil on the liquid.

[0032] A second oil guide chamber 231 is provided inside the rotating shaft 23, and heat transfer oil flows in the second oil guide chamber 231. The upper end of the rotating shaft 23 rotates around its own axis and is connected to a second oil inlet pipe 232. The lower end of the rotating shaft 23 rotates around its own axis and is connected to a second oil outlet pipe 233. Both the second oil inlet pipe 232 and the second oil outlet pipe 233 are connected to the second oil guide chamber 231 and extend out of the tank body 1. The second oil outlet pipe 233 is connected to the first oil inlet pipe 152.

[0033] During the heating process of the liquid, the heat transfer oil will pass through the second oil inlet pipe 232, the second oil guide cavity 231, the second oil outlet pipe 233, the first oil inlet pipe 152, the first oil guide cavity 151 and the first oil outlet pipe 153 in sequence, so that the heat transfer oil can also heat the liquid in the fixed cylinder 22 through the rotating shaft 23 and the inner spiral blade 24, thereby increasing the heating area of ​​the liquid and further improving the concentration speed of the liquid.

[0034] like Figure 3 and Figure 4 As shown, the upper side of the screw conveyor 2 is connected to a plurality of second spray heads 27 through a connecting pipe 26. The connecting pipe 26 is located above the first spray head 222 and is connected to an air pipe 261. A first one-way valve 262 is installed on the air pipe 261. The first one-way valve 262 allows gas to flow only from the air pipe 261 to the connecting pipe 26; the second spray head 27 is connected to a bubble tube 28 that is vertically downwardly passed through the outer spiral leaf 15. The lower end of the bubble tube 28 is installed on the inner bottom wall of the tank body 1. A plurality of bubble ports 281 are provided on the lower side of the bubble tube 28. A second one-way valve 282 is installed in the bubble port 281. The second one-way valve 282 allows the mist liquid to be sprayed only from the inside of the bubble tube 28 to the outside of the bubble tube 28.

[0035] Part of the liquid that moves spirally upward in the fixed cylinder 22 will be sprayed out through each first spray head 222 in turn, and the rest of the liquid will flow into each connecting pipe 26 respectively. In the process of the liquid flowing in the connecting pipe 26, a negative pressure will be formed in the air pipe 261. The hot gas in the tank body 1 will enter the connecting pipe 26 from the air pipe 261, and the liquid mixed with gas will flow into the second spray head 27. The second spray head 27 will spray a mist of liquid mixed with gas into the bubble tube 28. The mist of liquid mixed with gas will be sprayed into the liquid located at the bottom of the outer spiral leaf 15 through the bubble port 281, so that a large number of bubbles are formed inside the liquid, which causes the liquid to tumble continuously. Therefore, the liquid in each area of ​​the tank body 1 can directly contact the spiral surface of the outer spiral leaf 15, so that the liquid can exchange heat evenly with the heat transfer oil, thereby improving the concentration speed of the liquid.

[0036] It is worth noting that the bubbles ejected from the bubble port 281 will move upward and enter the spiral cavity 16, so that a spiral upward airflow is formed in the spiral cavity 16. The airflow collides with the spiral downward mist liquid ejected from the first spray head 222, which not only slows down the speed of the spiral downward movement of the mist liquid, so that the mist liquid can be heated for a longer time with a larger heating area, but also enables the mist liquid to continue to float in the spiral cavity 16 through convection, that is, the mist liquid will not easily aggregate into large droplets on the spiral surface of the outer spiral blade 15, so as to ensure that the mist liquid has a larger heating area.

[0037] The spray port of the second spray head 27 is set downward, that is, the spray direction of the second spray head 27 is the same as the axial direction of the bubble tube 28, which reduces the mist liquid adhering to the inner wall of the bubble tube 28 and increases the heating area of ​​the mist liquid in the bubble tube 28. The hot gas entering the bubble tube 28 from the air pipe 261 and the second spray head 27 will be able to fully heat the mist liquid in the bubble tube 28, further improving the concentration speed of the liquid.

[0038] It is worth noting that the bubble tube 28 and the movement trajectory of the mist liquid sprayed from the first spray head 222 are staggered, so that the mist liquid sprayed from the first spray head 222 is not easy to adhere to the upper part of the bubble tube 28, thereby ensuring the heating area of ​​the mist liquid.

[0039] The implementation principle of a concentration device for preparing peptone in an embodiment of the present application is as follows: during the concentration process of the feed liquid, the feed liquid will enter the tank body 1 through the feed pipe 11, the vacuum pump 13 will pump the interior of the tank body 1 to a specified vacuum degree, and the heat transfer oil will pass through the second oil inlet pipe 232, the second oil guide cavity 231, the second oil outlet pipe 233, the first oil inlet pipe 152, the first oil guide cavity 151 and the first oil outlet pipe 153 in sequence, so that the heat transfer oil can heat the feed liquid through the rotating shaft 23, the inner spiral blade 24, the fixed cylinder 22 and the outer spiral blade 15, ensuring that the feed liquid in each area of ​​the tank body 1 can be evenly heated, and the heating area of ​​the feed liquid is increased, thereby improving the concentration speed of the feed liquid.

[0040] The motor 21 will drive the rotating shaft 23 to rotate through the two gears 25. The rotating shaft 23 will drive the liquid entering the fixed cylinder 22 from the feed inlet 221 through the inner spiral blade 24 to spirally rise in the fixed cylinder 22. Part of the liquid that spirally rises to the upper end of the fixed cylinder 22 will be sprayed out to the top of the outer spiral blade 15 through the first spray head 222 and spirally move downward in the spiral cavity 16, so that the movement path of the mist liquid is increased, so the mist liquid can be heated for a longer time, and the volume of the mist liquid will become larger, so the mist liquid will have a larger heating area, thereby further improving the concentration speed of the liquid.

[0041] The remaining liquid that spirals up to the upper end of the fixed cylinder 22 will flow into each connecting pipe 26 respectively, and the hot gas in the tank body 1 will enter the connecting pipe 26 from the air pipe 261. The liquid mixed with gas will flow into the second spray head 27, and the second spray head 27 will spray the mist liquid mixed with gas into the bubble tube 28. The mist liquid mixed with gas will be sprayed into the liquid located at the lower part of the outer spiral leaf 15 through the bubble port 281, so that a large number of bubbles are formed inside the liquid, which causes the liquid to tumble continuously. Therefore, the liquid in each area of ​​the tank body 1 can directly contact the spiral surface of the outer spiral leaf 15, so that the liquid can exchange heat evenly with the heat transfer oil, thereby improving the concentration speed of the liquid.

[0042] The bubbles ejected from the bubble port 281 will move upward and enter the spiral cavity 16, so that a spiral upward airflow is formed in the spiral cavity 16. The airflow collides with the spiral downward mist liquid ejected from the first spray head 222, which not only slows down the speed of the spiral downward movement of the mist liquid, so that the mist liquid can be heated for a longer time with a larger heating area, but also enables the mist liquid to continue to float in the spiral cavity 16 through convection, that is, the mist liquid will not easily aggregate into large droplets on the spiral surface of the outer spiral blade 15, so as to ensure that the mist liquid has a larger heating area.

[0043] In summary, the feed liquid in the present application has a larger heating area, and the feed liquid in each area can be heated evenly, thereby increasing the concentration speed of the feed liquid.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A concentrating device for preparing peptone, comprising a tank (1) arranged vertically and connected to a feed pipe (11), a discharge pipe (12) and a vacuum pump (13), characterized in that: A screw conveyor (2) and an outer spiral blade (15) are coaxially arranged in the tank body (1). The lower end of the screw conveyor (2) is provided with a material inlet (221) located at the lower end of the outer spiral blade (15). The upper end of the screw conveyor (2) is connected to a plurality of first spray heads (222) located above the outer spiral blade (15). The outer spiral blade (15) is sleeved on the screw conveyor (2) and embedded in the tank body (1). A first oil guide cavity (151) in which heat transfer oil flows is provided between the upper spiral surface and the lower spiral surface of the outer spiral blade (15). The outer spiral blade (15) is connected to a first oil inlet pipe (152) and a first oil outlet pipe (153) which are connected to the first oil guide cavity (151) and extend out of the tank body (1). The upper end of the screw conveyor (2) is connected to a plurality of second spray heads (27) via a connecting pipe (26) located above the first spray head (222); the connecting pipe (26) is connected to an air pipe (261); the air pipe (261) is provided with a first one-way valve (262) for allowing only air to flow from the air pipe (261) to the connecting pipe (26); the second spray head (27) is connected to a bubble tube (28) passing through the outer spiral blade (15); the lower portion of the bubble tube (28) is provided with a plurality of bubble ports (281); the bubble ports (281) are provided with a second one-way valve (282) for allowing only mist-like liquid to be sprayed from the bubble tube (28) to the outside of the bubble tube (28).

2. A concentrating device for preparing peptone according to claim 1, characterized in that: The spray direction of the second spray head (27) is the same as the axial direction of the bubble tube (28).

3. The concentrating device for preparing peptone according to claim 1, characterized in that: The bubble tube (28) and the movement trajectory of the mist liquid sprayed by the first spray head (222) are staggered.

4. The concentrating device for preparing peptone according to claim 1, characterized in that: The screw conveyor (2) comprises a motor (21) arranged on the outer wall of the tank body (1), a fixed cylinder (22) and a rotating shaft (23) arranged coaxially with the tank body (1), a feed port (221) being arranged at the lower part of the fixed cylinder (22), and a first spray head (222) being arranged at the top of the fixed cylinder (22); the rotating shaft (23) being connected to the tank body (1) by rotating around its own axis, an inner spiral leaf (24) being sleeved on the rotating shaft (23), and the inner spiral leaf (24) being rotatably embedded in the fixed cylinder (22); one end of the rotating shaft (23) extending out of the tank body (1) and being sleeved with a gear (25) on the output shaft of the motor (21), the two gears (25) being meshed with each other.

5. A concentrating device for preparing peptone according to claim 4, characterized in that: A second oil guide cavity (231) is provided inside the rotating shaft (23). The rotating shaft (23) rotates around its own axis to communicate with a second oil inlet pipe (232) and a second oil outlet pipe (233) which are connected to the second oil guide cavity (231) and extend outside the tank body (1). The second oil outlet pipe (233) is connected to the first oil inlet pipe (152).

6. The concentrating device for preparing peptone according to claim 1, characterized in that: A spiral embedding groove (223) is provided on the outer wall of the screw conveyor (2), and the inner side of the outer spiral blade (15) is open and embedded in the embedding groove (223).

7. The concentrating device for preparing peptone according to claim 1, characterized in that: All of the first spray heads (222) are arranged in a spiral shape around the axis of the tank body (1), and the spiral line of the arrangement trajectory of the first spray heads (222) is the same as the pitch of the outer spiral blade (15).

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