A magnetic stirring temperature control structure of a feed degrading bacteria activity detection reaction kettle

Abstract

This utility model belongs to the technical field of reaction vessel equipment and discloses a magnetic stirring and temperature control structure for a reaction vessel for detecting the activity of feed-degrading bacteria. It includes a reaction vessel body, a magnetic drive mechanism, a magnetic stirrer, and a temperature control jacket. The magnetic drive mechanism is located at the bottom of the reaction vessel body, and the temperature control jacket is wrapped around the outer wall of the reaction vessel body. A magnetic stirrer is located inside the bottom of the reaction vessel body, and the magnetic drive mechanism drives the magnetic stirrer to rotate synchronously based on a rotating magnetic field. A detachable guide tube is located at the center of the shaft inside the reaction vessel body. Multiple rows of downward-sloping guide holes are evenly opened on the side wall of the guide tube. A magnetic stirrer is located inside the guide tube, and an upward-folding stirrer is located at the bottom outside the guide tube. This utility model completely solves the three major industry pain points in the detection of feed-degrading bacteria activity—particle sedimentation, uneven temperature field, and poor sealing—through the three-stage crushing-dual stirring convection circulation of the guide tube, nested zoned intelligent temperature control, and zero-leakage magnetic drive technology.

Description

Technical Field

[0001] This utility model belongs to the technical field of reaction vessel equipment, and more specifically, it relates to a magnetic stirring and temperature control structure for a reaction vessel for detecting the activity of feed-degrading bacteria. Background Technology

[0002] In the fields of feed industry and microbiology research, accurately assessing the activity of feed-degrading bacteria is crucial. This typically requires anaerobic or aerobic cultivation in a reactor simulating the rumen or a specific environment, with real-time monitoring of degradation efficiency. However, existing reactors suffer from the following shortcomings: solid feed particles tend to settle; the flow field generated by traditional agitators is insufficient to effectively suspend high-fiber materials, creating dead zones at the bottom; mechanical stirring is insufficient for tearing fiber bundles, resulting in limited contact area between the bacterial solution and feed, significantly prolonging the degradation cycle; and the single-jacket structure leads to sluggish heat transfer, especially with a sudden drop in bottom temperature during feeding, while bacterial activity is extremely sensitive to temperature fluctuations.

[0003] Therefore, this utility model provides a magnetic stirring and temperature control structure for a reaction vessel for detecting the activity of feed-degrading bacteria. Utility Model Content

[0004] In view of the above-mentioned problems of the existing technology, the purpose of this utility model is to provide a magnetic stirring and temperature control structure for a feed degradation bacteria activity detection reactor, which has high reliability, quick assembly and disassembly and meets the requirements of remote human-machine interaction.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A magnetic stirring and temperature control structure for a reaction vessel for detecting the activity of feed-degrading bacteria includes a reaction vessel body, a magnetic drive mechanism, a magnetic stir bar, and a temperature control jacket. The magnetic drive mechanism is located below the bottom of the reaction vessel body. The temperature control jacket is wrapped around the outer wall of the reaction vessel body. The magnetic stir bar is located inside the bottom of the reaction vessel body. The magnetic drive mechanism drives the magnetic stir bar to rotate synchronously based on a rotating magnetic field.

[0007] The reactor body has a detachable guide tube installed at its core. The side wall of the guide tube has multiple rows of downward-sloping guide holes. A magnetic stir bar is installed inside the guide tube, and an upward-turning stir bar is installed at the bottom outside the guide tube.

[0008] As a further preferred technical solution of this utility model, the temperature control jacket includes a first independent jacket, a second independent jacket, and a third independent jacket. The second independent jacket is disposed in the middle of the outer wall of the reactor body. The first independent jacket wraps around the second independent jacket, the upper middle part of the reactor body, and the bottom of the reactor body. The third independent jacket is disposed on the top cover of the reactor body. Multiple temperature measuring units are disposed inside the reactor body.

[0009] As a further preferred technical solution of this utility model, the second independent jacket and the first independent jacket are the same independent jacket structure. The independent jacket structure includes an inner wall of the jacket and an outer wall of the jacket. A closed annular flow channel is provided between the inner wall of the jacket and the outer wall of the jacket. An inlet and outlet connected to the closed annular flow channel are provided on the outer wall of the jacket. A spiral guide vane is provided on the closed annular flow channel.

[0010] As a further preferred technical solution of this utility model, an eddy current generator is provided inside the upper end of the guide tube, and a turbine crushing disc is provided inside the lower end of the guide tube, wherein the blade edges of the turbine crushing disc have hard serrations.

[0011] As a further preferred technical solution of this utility model, the magnetic drive mechanism includes a speed-regulating motor, a coupling, and a permanent magnet drive disk. The speed-regulating motor is connected to the permanent magnet drive disk through the coupling, and the permanent magnet drive disk has multiple permanent magnet blocks arranged in a ring according to polarity rules.

[0012] As a further preferred technical solution of this utility model, a gap is left between the permanent magnet drive disk and the bottom of the reactor body.

[0013] As a further preferred technical solution of this utility model, the top of the reactor body is provided with a detachable sealing cover, and the sealing cover is provided with multiple interfaces.

[0014] As described above, the magnetic stirring and temperature control structure of the feed degradation bacteria activity detection reactor provided by this utility model has the following beneficial effects:

[0015] This invention utilizes the aforementioned magnetic stirring and temperature control structure of a feed degradation bacteria activity detection reactor. Compared to existing technologies, this design, through the upward-folding stirrer outside the guide tube, powerfully lifts the bottom particles, which then converge with the downward-flowing fluid within the guide tube, forming a high-intensity internal and external convection circulation. Meanwhile, the turbine crushing disc inside the guide tube rapidly cuts large pieces of feed, combined with a high-shear inclined impeller for fine crushing, and an axial vortex generator produces axial vortices, forming a three-stage crushing-suspension chain, improving the uniformity of feed particle suspension. A first independent jacket covers the upper and lower parts, while a second independent jacket controls the middle section. The first jacket completely encloses the second jacket, forming a "jacket insulation jacket" structure to prevent heat loss from the second jacket. A third independent jacket covers the sealing area, with each area containing a built-in temperature measurement unit that provides real-time feedback and adjusts the corresponding jacket flow rate, thereby achieving full axial temperature coverage of the upper, middle, and lower parts of the reactor, with an axial temperature difference of less than 0.3 degrees Celsius.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is one of the overall three-dimensional structural schematic diagrams of the magnetic stirring and temperature control structure of the reaction vessel for detecting the activity of feed-degrading bacteria according to this utility model application;

[0019] Figure 2 This is the second three-dimensional structural schematic diagram of the magnetic stirring and temperature control structure of the reaction vessel for detecting the activity of feed-degrading bacteria according to this utility model application.

[0020] Figure 3 This is a cross-sectional view of the overall structure of the magnetic stirring and temperature control structure of the reaction vessel for detecting the activity of feed-degrading bacteria according to this utility model application.

[0021] Figure 4 This is a cross-sectional view of the guide tube of the magnetic stirring and temperature control structure of a reaction vessel for detecting the activity of feed-degrading bacteria, as per this utility model application.

[0022] Figure 5 This is one of the three-dimensional structural schematic diagrams of the guide tube of the magnetic stirring and temperature control structure of the reaction vessel for detecting the activity of feed degrading bacteria according to this utility model application;

[0023] Figure 6 This is the second three-dimensional structural diagram of the guide tube of the magnetic stirring and temperature control structure of the reaction vessel for detecting the activity of feed degrading bacteria, which is the subject of this utility model application.

[0024] Summary of figure labels and their descriptions:

[0025] 100. Reactor body; 101. Temperature measurement unit; 110. Cover; 111. Interface; 200. Magnetic drive mechanism; 210. Speed-regulating motor; 220. Permanent magnet drive disc; 300. Temperature control jacket; 310. First independent jacket; 311. Inlet and outlet; 320. Second independent jacket; 330. Third independent jacket; 400. Flow guide tube; 411. Magnetic stir bar; 412. Turbine crushing disc; 413. Eddy current generator; 420. Upward-tilting stir bar; 430. Flow guide hole. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0027] It should be noted that the structures, proportions, and sizes depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention. Specific structures can be described with reference to the accompanying drawings of the patent application.

[0028] This utility model provides a magnetic stirring and temperature control structure for a reaction vessel for detecting the activity of feed-degrading bacteria. Please refer to [link / reference]. Figures 1 to 6 As shown, the reactor includes a reactor body 100, a magnetic drive mechanism 200, a magnetic stir bar 411, and a temperature control jacket 300. The magnetic drive mechanism 200 is located below the bottom of the reactor body 100. The temperature control jacket 300 is wrapped around the outer wall of the reactor body 100. The magnetic stir bar 411 is located inside the bottom of the reactor body 100. The magnetic drive mechanism 200 drives the magnetic stir bar 411 to rotate synchronously based on a rotating magnetic field.

[0029] A detachable flow guide cylinder 400 is axially mounted within the reactor body 100. Multiple rows of downward-sloping flow guide holes 430 are evenly distributed on the sidewall of the flow guide cylinder 400. A magnetic stir bar 411 is installed inside the flow guide cylinder 400, and an upward-tilting stir bar 420 is installed at the bottom outside the flow guide cylinder 400. The upward-tilting stir bar 420 generates a strong axial flow, lifting particles settling at the bottom upwards. The downward-sloping flow guide holes 430 of the flow guide cylinder 400 guide the high-speed fluid inside to the bottom, forming a strong internal and external circulation convection with the upward flow from the external upward-tilting stir bar 420. This structure forces all materials to undergo a wide-range, high-efficiency circulation movement within the reactor, completely avoiding dead zones and settling, and significantly improving mixing uniformity and the representativeness of degradation efficiency.

[0030] The upper end of the guide tube 400 is equipped with a vortex generator 413, and the lower end of the guide tube 400 is equipped with a turbine crushing disc 412. The blades of the turbine crushing disc 412 have hard serrated edges. The turbine crushing disc 412 cuts large pieces of feed at high speed, performing initial crushing of the feed. The guide tube 400 is equipped with the vortex generator 413, magnetic stirrer 411 and turbine crushing disc 412 arranged from top to bottom. The magnetic stirrer 411 can be a high-shear inclined impeller with 12 to 16 blades swept back at 45° to generate a high-intensity shear flow to refine the feed. The vortex generator 413 has a spiral guide vane. The spiral guide vane rotates in the opposite direction to the high-shear inclined impeller to generate axial vortices, prevent particle deposition and improve suspension.

[0031] The temperature control jacket 300 includes a first independent jacket 310, a second independent jacket 320, and a third independent jacket 330. The second independent jacket 320 is disposed on the middle of the outer wall of the reactor body 100. The first independent jacket 310 wraps around the second independent jacket 320, the upper middle part of the reactor body 100, and the bottom of the reactor body 100. The third independent jacket 330 is disposed on the cap 110 at the top of the reactor body 100. Multiple temperature measuring units 101 are disposed inside the reactor body 100. The second independent jacket 320 occupies most of the middle part of the reactor body 100, effectively controlling the temperature. The first independent jacket 310 wraps around the second independent jacket 320, the bottom of the reactor body 100, and the upper middle part of the reactor body 100. The first independent jacket 310 completely encloses the second independent jacket 320, reducing heat loss from the second independent jacket 320, while also controlling the temperature of the bottom part not touched by the second independent jacket 320. The three independent jackets divide the reactor body 100 into three main annular temperature zones: upper, middle, and lower. In the control zone, the reactor body 100 has three temperature measurement units 101 respectively set in the middle of the upper, middle and lower annular temperature control zones. The three temperature measurement units 101 detect the temperature of the upper, middle and lower zones. By adjusting the flow rate of the independent jacket, the temperature of the corresponding position is controlled. The independent zone control can quickly compensate for local temperature changes, greatly shorten the temperature recovery stabilization time, eliminate the axial temperature difference caused by the long heat conduction path and slow response of the traditional single jacket, and achieve the temperature uniformity of the entire reaction system ≤0.3°C.

[0032] Specifically, the second independent jacket 320 and the first independent jacket 310 are of the same independent jacket structure. The independent jacket structure includes an inner jacket wall and an outer jacket wall, with a closed annular flow channel between them. The outer jacket wall has an inlet / outlet 311 connecting to the closed annular flow channel, and a spiral guide vane is installed on the closed annular flow channel. A micro-pump is installed in the closed annular flow channel, and the flow rate is controlled to achieve temperature control. An additional insulation layer is added to the outer jacket wall to reduce heat loss. The spiral guide vane ensures that the circulating medium flows spirally within the jacket, maximizing heat exchange efficiency and improving temperature uniformity.

[0033] The magnetic drive mechanism 200 includes a speed-regulating motor 210, a coupling, and a permanent magnet drive disk 220. The speed-regulating motor 210 is connected to the permanent magnet drive disk 220 via the coupling. The permanent magnet drive disk 220 has multiple permanent magnet blocks arranged in a ring according to polarity rules. A gap is left between the permanent magnet drive disk and the bottom of the reactor body 100. The rotating magnetic field drives the stir bar inside the reactor to rotate synchronously, achieving non-contact, fully enclosed stirring.

[0034] The reactor body 100 is provided with a removable sealing cover 110 on its top, and the sealing cover 110 is provided with multiple interfaces 111. The multiple interfaces 111 include feed and sampling ports, gas inlet and outlet, sensor interface 111, safety valve interface 111, etc., and the gas inlet and outlet can introduce inert gas.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A magnetic stirring and temperature control structure for a feed degrading bacteria activity detection reactor, comprising a reactor body (100), a magnetic drive mechanism (200), a magnetic stir bar (411), and a temperature control jacket (300), characterized in that, A magnetic drive mechanism (200) is provided below the bottom of the reactor body (100), the temperature control jacket (300) is wrapped around the outer wall of the reactor body (100), a magnetic stir bar (411) is provided inside the bottom of the reactor body (100), and the magnetic drive mechanism (200) drives the magnetic stir bar (411) to rotate synchronously based on the rotating magnetic field; The reactor body (100) is equipped with a detachable guide tube (400) at its core. The side wall of the guide tube (400) is evenly provided with multiple rows of downward-sloping guide holes (430). A magnetic stir bar (411) is provided inside the guide tube (400). An upward-turning stir bar (420) is provided at the bottom outside the guide tube (400).

2. The magnetic stirring and temperature control structure of the feed-degrading bacteria activity detection reactor according to claim 1, characterized in that, The temperature control jacket (300) includes a first independent jacket (310), a second independent jacket (320), and a third independent jacket (330). The second independent jacket (320) is disposed on the middle of the outer wall of the reactor body (100). The first independent jacket (310) wraps around the second independent jacket (320), the upper part of the reactor body (100), and the bottom of the reactor body (100). The third independent jacket (330) is disposed on the cap (110) at the top of the reactor body (100). Multiple temperature measurement units (101) are disposed inside the reactor body (100).

3. The magnetic stirring and temperature control structure of the feed degradation bacteria activity detection reactor according to claim 2, characterized in that, The second independent jacket (320) and the first independent jacket (310) are the same independent jacket structure. The independent jacket structure includes an inner wall and an outer wall. A closed annular flow channel is provided between the inner wall and the outer wall. An inlet and outlet (311) connecting the closed annular flow channel is provided on the outer wall. A spiral guide vane is provided on the closed annular flow channel.

4. The magnetic stirring and temperature control structure of the feed degrading bacteria activity detection reactor according to claim 1, characterized in that, The upper end of the guide tube (400) is provided with a vortex generator (413), and the lower end of the guide tube (400) is provided with a turbine crushing disc (412). The blades of the turbine crushing disc (412) have hard serrations.

5. The magnetic stirring and temperature control structure of the feed-degrading bacteria activity detection reactor according to claim 1, characterized in that, The magnetic drive mechanism (200) includes a speed-regulating motor (210), a coupling, and a permanent magnet drive disk (220). The speed-regulating motor (210) is connected to the permanent magnet drive disk (220) through the coupling. The permanent magnet drive disk (220) has multiple permanent magnet blocks arranged in a ring according to polarity rules.

6. The magnetic stirring and temperature control structure of the feed degradation bacteria activity detection reactor according to claim 5, characterized in that, The permanent magnet drive disk has a gap with the bottom of the reactor body (100).

7. The magnetic stirring and temperature control structure of the feed degrading bacteria activity detection reactor according to claim 1, characterized in that, The reactor body (100) is provided with a removable sealing cover (110) on the top, and the sealing cover (110) is provided with multiple interfaces (111).

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