Oxytetracycline hydrochloride mixing tank and working method thereof

Abstract

The invention belongs to the technical field of mixing, and particularly relates to a stirring mechanism with a vertical shaft rotating function, in particular to an oxytetracycline hydrochloride mixing tank and a working method thereof.The oxytetracycline hydrochloride mixing tank comprises a tank body, a stirring shaft, a stirring motor and a stirring assembly; the stirring assembly comprises a connecting pipe, a stirring blade and an elastic defoaming piece. The elastic defoaming piece is arranged in the stirring assembly, when the rotating speed of the stirring assembly is increased to exceed the critical value, bubbles on the liquid level are eliminated through the elastic defoaming piece, the higher the rotating speed is, the higher the defoaming efficiency of the elastic defoaming piece is, and therefore elimination of the bubbles on the liquid level is accelerated; therefore, the problem that the mixing degree of oxytetracycline and hydrochloric acid is reduced due to bubble increase caused by increase of the rotating speed in the prior art is solved.

Description

Technical Field

[0001] The present invention belongs to the field of mixing technology, and particularly relates to a stirring mechanism with a vertical axis of rotation, and more particularly to a mixing tank for oxytetracycline hydrochloride and its working method. Background Art

[0002] When preparing oxytetracycline hydrochloride, it is necessary to uniformly mix oxytetracycline base and hydrochloric acid to avoid the production of impurities such as deoxytetracycline due to excessive local concentration.

[0003] In related technologies, the method of increasing the rotation speed is adopted to uniformly mix oxytetracycline base and hydrochloric acid. It is found in actual use that when the rotation speed increases to a critical value, further increasing the rotation speed will result in a decrease in the mixing degree of oxytetracycline base and hydrochloric acid.

[0004] Therefore, how to avoid the decrease in the mixing degree of the solution when the stirring speed exceeds the critical value is a technical problem to be solved urgently at present.

[0005] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0006] The embodiments of the present disclosure at least provide a mixing tank for oxytetracycline hydrochloride and its usage method.

[0007] In a first aspect, the embodiments of the present disclosure provide a mixing tank for oxytetracycline hydrochloride, including:

[0008] A tank body, which includes a supporting section and a separating section;

[0009] A stirring shaft, which penetrates through the tank body;

[0010] A stirring motor, which is used to drive the stirring shaft to rotate;

[0011] A stirring assembly, which is arranged on the stirring shaft;

[0012] Wherein, the stirring assembly includes:

[0013] A connecting pipe, which is arranged on the stirring shaft and extends radially outward along the stirring shaft;

[0014] Stirring blades, which are arranged on the stirring shaft through the connecting pipe;

[0015] An elastic defoaming member is provided at one end of the connecting pipe away from the stirring shaft. When the elastic defoaming member rotates to the separation section, the elastic defoaming member pops outwards along the connecting pipe to send the liquid at the top into the connecting pipe; when the elastic defoaming member rotates to the abutting section, the elastic defoaming member is compressed inwards along the connecting pipe to eliminate the bubbles in the liquid entering the connecting pipe.

[0016] In an alternative embodiment, the elastic defoaming member includes:

[0017] A telescopic rod, which has a receiving groove communicated with the connecting pipe inside, and a liquid inlet communicated with the receiving groove is provided on the side wall of the telescopic rod;

[0018] A guide rod, one end of which is connected to the top of the telescopic rod, the other end is sleeved with a return spring, and is inserted into the side wall of the connecting pipe.

[0019] In an alternative embodiment, a plurality of barbs are provided at the top of the receiving groove in the direction towards the connecting pipe;

[0020] The barbs are used to defoam the liquid entering the connecting pipe when the elastic defoaming member is compressed.

[0021] In an alternative embodiment, a funnel-shaped constriction is provided in the middle of the connecting pipe;

[0022] A plurality of thorn needles are provided at the funnel-shaped constriction in the direction towards the receiving groove of the telescopic rod to further defoam the liquid entering the connecting pipe.

[0023] In an alternative embodiment, the separation section is provided above the abutting section and is communicated with the feed inlet of the tank body;

[0024] When the elastic defoaming member rotates to the abutting section, the elastic defoaming member is squeezed by the abutting section; when the elastic defoaming member rotates to the separation section, the elastic defoaming member pops outwards under the action of elastic force.

[0025] In an alternative embodiment, a plurality of ridges are provided at the abutting section along the axis and towards the axis of the tank body at intervals;

[0026] When the elastic defoaming member rotates following the stirring shaft and passes over the ridges, it repeatedly expands and contracts along the axial direction of the connecting pipe to eliminate the bubbles in the liquid entering the connecting pipe.

[0027] In an alternative embodiment, a liquid outlet is provided at one end of the connecting pipe close to the stirring shaft;

[0028] The elastic defoaming member is provided with a liquid inlet.

[0029] In an alternative embodiment, the connecting pipes are divided into multiple groups, and the connecting pipes in each group of connecting pipes are arranged at intervals along the axial direction of the stirring shaft;

[0030] The multiple groups of connecting pipes are arranged at intervals along the radial direction of the stirring shaft.

[0031] In a second aspect, an embodiment of the present disclosure further provides a working method applied to the mixing tank for oxytetracycline hydrochloride as described above. The working method includes:

[0032] Inject the liquid to be stirred into the tank body;

[0033] Control the stirring motor to work so that the rotation speed of the stirring assembly exceeds the critical value;

[0034] When the elastic defoaming member rotates to the separation section, send the liquid at the liquid level of the tank body into the connecting pipe;

[0035] When the elastic defoaming member rotates to the abutting section, eliminate the bubbles in the liquid entering the connecting pipe.

[0036] In an alternative embodiment, a plurality of ridges are arranged at intervals along the axial direction and towards the axis of the tank body on the abutting section;

[0037] The working method further includes:

[0038] When the elastic defoaming member rotates to pass over the ridge, repeatedly expand and contract along the axial direction of the connecting pipe to eliminate the bubbles in the liquid entering the connecting pipe.

[0039] The beneficial effect of the present invention is that the mixing tank for oxytetracycline hydrochloride and its using method are provided with an elastic defoaming member in the stirring assembly. When the rotation speed of the stirring assembly increases to exceed the critical value, the elastic defoaming member eliminates the bubbles at the liquid level. The faster the rotation speed, the higher the defoaming efficiency of the elastic defoaming member, thereby accelerating the elimination of the bubbles at the liquid level, and thus solving the problem that the mixing degree of oxytetracycline base and hydrochloric acid is reduced due to the increase in the number of bubbles caused by the increase in the rotation speed in the related art.

[0040] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0041] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0043] Figure 1 Structural schematic diagram of the mixing tank for oxytetracycline hydrochloride provided by an embodiment of the present disclosure;

[0044] Figure 2 Cross-sectional view of the mixing tank for oxytetracycline hydrochloride provided by an embodiment of the present disclosure;

[0045] Figure 3 Cross-sectional view of the mixing tank for oxytetracycline hydrochloride provided by an embodiment of the present disclosure from another perspective;

[0046] Figure 4 Structural schematic diagram of the stirring shaft and the stirring assembly provided by an embodiment of the present disclosure;

[0047] Figure 5 Cross-sectional view of the stirring shaft and the stirring assembly provided by an embodiment of the present disclosure;

[0048] Figure 6 Flowchart of the usage method of the mixing tank for oxytetracycline hydrochloride provided by an embodiment of the present disclosure.

[0049] In the figure: 100, tank body; 110, feed inlet; 120, abutting section; 130, separation section; 140, rib; 200, stirring shaft; 300, stirring motor; 400, stirring assembly; 410, connecting pipe; 411, funnel-shaped constriction; 412, thorn needle; 413, liquid outlet; 420, stirring blade; 430, elastic defoaming member; 431, telescopic rod; 431a, receiving groove; 431a1, barbs; 431b, liquid inlet; 431c, guide rod; 431d, return spring. Specific Embodiments

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0051] It has been found that in the related art, simply increasing the stirring speed, for example, according to the existing preparation process, when mixing 5% (w / v) of oxytetracycline base with 2 mol / L hydrochloric acid, when the rotation speed of the stirring tank is 80 - 120 rpm, the mixing degree of the mixture of oxytetracycline base and hydrochloric acid can be effectively improved. When it exceeds the critical value of 120 rpm, the mixing degree of the solution decreases, and the content of impurities increases from 0.05% to 0.2%. After analysis, it is found that when the rotation speed exceeds the critical value, the turbulence in the solution intensifies, generating a large number of bubbles. After the oxytetracycline base particles are wrapped by the bubbles, a "pseudo-homogeneous" system is formed, resulting in a decrease in the mixing degree of the mixture of oxytetracycline base and hydrochloric acid.

[0052] Based on the above research, the embodiments of the present disclosure provide a mixing tank for oxytetracycline hydrochloride and its usage method. When the rotation speed of the stirring shaft 200 exceeds the critical value, the defoaming efficiency of the elastic defoaming member 430 also increases accordingly, so that the oxytetracycline base wrapped in the bubbles is exposed again and mixed with the solution, thereby improving the mixing degree of the solution.

[0053] Regarding the defects existing in the above solutions, they are all the results obtained by the inventors through practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed in this disclosure by the present disclosure for the above problems should all be the contributions made by the inventors to the present disclosure during the process of the present disclosure.

[0054] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0055] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0056] Please refer to Figure 1 and Figure 2 , at least one embodiment provides a mixing tank for oxytetracycline hydrochloride, including the following structure:

[0057] A tank body 100, which includes a holding section 120 and a separation section 130. The tank body 100 is cylindrical, and when placed, the axis of the tank body 100 is parallel to the horizontal plane. The side wall of the tank body 100 is divided into a holding section 120 and a separation section 130, as Figure 2 shown. The surface roughness of the holding section 120 ≤ 0.8 μm.

[0058] Among them, the separation section 130 is arranged above the holding section 120 and is communicated with the feed port 110 of the tank body 100.

[0059] It should be noted that the liquid level height of the solution in the tank body 100 is located at the junction of the abutting section 120 and the separating section 130, so as to facilitate the liquid at the liquid level to enter the elastic defoaming member 430.

[0060] During use, when the elastic defoaming member 430 rotates to the abutting section 120, the elastic defoaming member 430 is squeezed by the abutting section 120, and the squeezing direction is as shown by Figure 2 F2 in; when the elastic defoaming member 430 rotates to the separating section 130, the elastic defoaming member 430 pops outwards under the action of elastic force, and the popping direction is as shown by Figure 2 F1 in.

[0061] Please refer to Figures 1 to 3 , the stirring shaft 200, which penetrates through the tank body 100; the stirring motor 300, which is used to drive the stirring shaft 200 to rotate.

[0062] The stirring assembly 400 is arranged on the stirring shaft 200. The stirring motor 300 drives the stirring shaft 200 to rotate, and then drives the stirring assembly 400 to rotate.

[0063] The structure of the stirring assembly 400 will be described below. Please refer to Figure 4 and Figure 5 , the stirring assembly 400 includes:

[0064] The connecting pipe 410 is arranged on the stirring shaft 200 and is arranged radially along the stirring shaft 200 and towards the outside. An outlet 413 is opened at one end of the connecting pipe 410 close to the stirring shaft 200. The liquid entering the connecting pipe 410 can flow out from the outlet 413 and enter the middle of the stirring shaft 200 for further stirring.

[0065] The stirring blade 420 is arranged on the stirring shaft 200 through the connecting pipe 410. In a preferred embodiment, the stirring blade 420 adopts a double helix structure.

[0066] The elastic defoaming member 430 is arranged at one end of the connecting pipe 410 far from the stirring shaft 200. When the elastic defoaming member 430 rotates to the separating section 130, the elastic defoaming member 430 pops outwards along the connecting pipe 410 to send the liquid at the top into the connecting pipe 410; when the elastic defoaming member 430 rotates to the abutting section 120, the elastic defoaming member 430 is compressed inwards along the connecting pipe 410 to eliminate the bubbles in the liquid entering the connecting pipe 410.

[0067] By arranging an elastic defoaming member 430 in the stirring assembly 400, when the rotation speed of the stirring assembly 400 increases to exceed the critical value, the elastic defoaming member eliminates the bubbles at the liquid surface. The faster the rotation speed, the higher the defoaming efficiency of the elastic defoaming member 430, thereby accelerating the elimination of the bubbles at the liquid surface, and thus solving the problem that the mixing degree of oxytetracycline base and hydrochloric acid decreases due to the increase in the number of bubbles caused by the increase in the rotation speed in the related art.

[0068] Among them, the critical value refers to the rotation speed of the stirring assembly when, under the existing working conditions and without defoaming, as the rotation speed of the stirring assembly increases, the mixing degree of oxytetracycline base and hydrochloric acid changes from increasing to decreasing. The critical values under different processes and working conditions are different.

[0069] Please continue to refer to Figure 4 and Figure 5 The elastic defoaming member 430 includes: a telescopic rod 431, an accommodation groove 431a communicating with the connecting pipe 410 is formed inside the telescopic rod 431, and a liquid inlet 431b communicating with the accommodation groove 431a is formed on the side wall of the telescopic rod 431.

[0070] Among them, the top of the telescopic rod 431 is an arc surface and is polished, and the surface roughness ≤ 0.8μm.

[0071] When the stirring shaft 200 rotates, the top of the telescopic rod 431 contacts the abutting section 120 of the tank body 100, thereby compressing the telescopic rod 431 toward the connecting pipe 410. The compression direction is as shown by F2 in Figure 2 When the top of the telescopic rod 431 separates from the abutting section 120 and enters the separation section 130, the telescopic pipe pops outwards. The popping direction is as shown by F1 in Figure 2 At the same time, the liquid inlet 431b is exposed, so that the liquid at the liquid surface enters the accommodation groove 431a. The liquid flow direction is as shown by F in Figure 5 as shown in.

[0072] A guide rod 431c, one end of which is connected to the top of the telescopic rod 431, the other end is sleeved with a return spring 431d, and is inserted into the side wall of the connecting pipe 410. The guide rod 431c guides the telescopic direction of the telescopic rod 431, and the return spring 431d makes the telescopic rod 431 pop out.

[0073] Please continue to refer to Figure 5 The top of the accommodation groove 431a is provided with a plurality of barbs 431a1 facing the direction of the connecting pipe 410; the barbs 431a1 are used for defoaming the liquid entering the connecting pipe 410 when the elastic defoaming member 430 is compressed.

[0074] Specifically, when the elastic defoaming member 430 rotates to the separation section 130, the liquid at the liquid level is sent into the connecting pipe 410. When it continues to rotate to the abutting section 120, the telescopic rod 431 will squeeze the liquid in the connecting pipe 410. At this time, the barbs 431a1 will pierce the bubbles in the connecting pipe 410.

[0075] It should be noted that when the connecting pipe 410 rotates above the stirring shaft 200, the bubbles in the liquid in the connecting pipe 410 are close to the barbs 431a1 in the elastic defoaming member 430. When the telescopic rod 431 is squeezed, the barbs 431a1 of the telescopic rod 431 will pierce the bubbles in the connecting pipe 410.

[0076] Please continue to refer to Figure 5 , a funnel-shaped constriction 411 is provided in the middle of the connecting pipe 410; the funnel-shaped constriction 411 is provided with a plurality of thorns 412 facing the receiving groove 431a of the telescopic rod 431 to further defoam the liquid entering the connecting pipe 410.

[0077] When the connecting pipe 410 rotates below the stirring shaft 200, the bubbles in the liquid in the connecting pipe 410 will gradually move towards the stirring shaft 200. During the movement, they pass through the funnel-shaped constriction 411 and come into contact with the thorns 412, thereby eliminating the bubbles.

[0078] In order to eliminate some tiny bubbles, a plurality of protrusions 140 are provided on the abutting section 120 along the axis and facing the axis of the tank body 100 at intervals; when the elastic defoaming member 430 rotates following the stirring shaft 200 and passes through the protrusions 140, it expands and contracts repeatedly along the axis of the connecting pipe 410 to eliminate the bubbles in the liquid entering the connecting pipe 410. By repeatedly changing the hydraulic pressure in the connecting pipe 410, the bubbles are repeatedly pulled, thereby breaking the bubbles with smaller particle sizes.

[0079] Among them, the side surface of the protrusion 140 is arc-shaped, and the surface roughness of the side surface of the protrusion 140 ≤ 0.8 μm.

[0080] In order to further improve the defoaming efficiency, please refer to Figure 3 and Figure 4 , the connecting pipes 410 are divided into multiple groups, and the connecting pipes 410 in each group of connecting pipes 410 are arranged at intervals along the axis of the stirring shaft 200; the multiple groups of connecting pipes 410 are arranged at intervals along the radial direction of the stirring shaft 200.

[0081] Please refer to Figure 6 , the present disclosure embodiment also provides a working method applied to the mixing tank of oxytetracycline hydrochloride as described above. The working method includes:

[0082] Step S1, inject the liquid to be stirred into the tank body 100, and make the rotation speed of the stirring assembly (400) exceed the critical value;

[0083] Step S2, control the stirring motor 300 to work;

[0084] Step S3, when the elastic defoaming member 430 rotates to the separation section 130, send the liquid at the liquid level of the tank body 100 into the connecting pipe 410;

[0085] Step S4, when the elastic defoaming member 430 rotates to the abutting section 120, eliminate the bubbles in the liquid entering the connecting pipe 410.

[0086] By arranging the elastic defoaming member 430 in the stirring assembly 400 to eliminate the bubbles at the liquid level, the faster the rotation speed, the higher the defoaming efficiency of the elastic defoaming member 430, thereby accelerating the elimination of the bubbles at the liquid level, thus solving the problem that the mixing degree of oxytetracycline base and hydrochloric acid decreases due to the increase in bubbles caused by the increase in rotation speed in the related art.

[0087] It should be noted that a plurality of protrusions 140 are arranged along the axial direction and toward the axis of the tank body 100 at the abutting section 120, and the working method further includes:

[0088] Step S5, when the elastic defoaming member 430 rotates to pass over the protrusion 140, repeatedly expand and contract along the axial direction of the connecting pipe 410 to eliminate the bubbles in the liquid entering the connecting pipe 410.

[0089] Among them, steps S3 - S5 are repeatedly performed when the stirring motor 300 is working to eliminate the bubbles generated during stirring.

[0090] Furthermore, in order to verify the effectiveness of the mixing tank for oxytetracycline hydrochloride, stirring is respectively carried out in a conventional mixing tank (replaced by "conventional" in the table) and the mixing tank for oxytetracycline hydrochloride provided by the present invention (replaced by "the present invention" in the table), and the relevant data are measured as shown in the following table:

[0091]

[0092] It can be analyzed from the above table that after the rotation speed of the mixing tank for oxytetracycline hydrochloride provided by the present invention exceeds the critical value of 120 rpm and until 200 rpm, the coefficient of variation (CV) value of the solution remains at about 3%, and the bubble volume fraction is about 1%, thereby meeting the requirements of industrial production, thus solving the problem that the solution mixing degree increases instead of decreasing after the rotation speed exceeds the critical value of 120 rpm in the related art.

[0093] Among them, the CV value is obtained by the sampling analysis method.

[0094] In summary, the present invention provides a mixing tank for oxytetracycline hydrochloride and a method for using the same. The mixing tank for oxytetracycline hydrochloride includes: a tank body 100, which includes a supporting section 120 and a separating section 130; a stirring shaft 200, which penetrates through the tank body 100; a stirring motor 300, which is used to drive the stirring shaft 200 to rotate; a stirring assembly 400, which is arranged on the stirring shaft 200; wherein, the stirring assembly 400 includes: a connecting pipe 410, which is arranged on the stirring shaft 200 and is arranged radially along the stirring shaft 200 and outward; a stirring blade 420, which is arranged on the stirring shaft 200 through the connecting pipe 410; an elastic defoaming member 430, which is arranged at one end of the connecting pipe 410 away from the stirring shaft 200, and when the elastic defoaming member 430 rotates to the separating section 130, the elastic defoaming member 430 pops out outward along the connecting pipe 410 to send the liquid at the top into the connecting pipe 410; when the elastic defoaming member 430 rotates to the supporting section 120, the elastic defoaming member 430 is compressed inward along the connecting pipe 410 to eliminate the bubbles in the liquid entering the connecting pipe 410. By arranging the elastic defoaming member 430 in the stirring assembly 400, when the rotation speed of the stirring assembly 400 increases to exceed the critical value, the bubbles at the liquid surface are eliminated by the elastic defoaming member 430. The faster the rotation speed, the higher the defoaming efficiency of the elastic defoaming member 430, thereby accelerating the elimination of the bubbles at the liquid surface, and thus solving the problem that the mixing degree of oxytetracycline base and hydrochloric acid is reduced due to the increase in bubbles caused by the increase in rotation speed in the related art.

[0095] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A mixing tank for oxytetracycline hydrochloride, characterized in that: include: A tank body (100), comprising a supporting section (120) and a separating section (130); A stirring shaft (200), which passes through the tank body (100); A stirring motor (300), used for driving the stirring shaft (200) to rotate; A stirring assembly (400), which is arranged on the stirring shaft (200); Wherein, the stirring assembly (400) comprises: A connecting pipe (410) is arranged on the stirring shaft (200) and is arranged along the radial direction of the stirring shaft (200) and facing outwards; A stirring blade (420) which is arranged on the stirring shaft (200) via a connecting pipe (410); An elastic defoaming member (430) is arranged at one end of the connecting tube (410) away from the stirring shaft (200), and when the elastic defoaming member (430) rotates to the separation section (130), the elastic defoaming member (430) pops outward along the connecting tube (410) to send the liquid at the top into the connecting tube (410); when the elastic defoaming member (430) rotates to the abutment section (120), the elastic defoaming member (430) is compressed inward along the connecting tube (410) to eliminate bubbles in the liquid that has entered the connecting tube (410).

2. The mixing tank of oxytetracycline hydrochloride according to claim 1, characterized in that: The elastic defoaming member (430) comprises: A telescopic rod (431) having a receiving groove (431a) in the interior thereof and communicating with the connecting pipe (410), and a liquid inlet (431b) in communication with the receiving groove (431a) in the side wall of the telescopic rod (431); A guide rod (431c) has one end connected to the top of the telescopic rod (431), and the other end is sleeved with a return spring (431d) and inserted into the side wall of the connecting tube (410).

3. The mixing tank of oxytetracycline hydrochloride according to claim 2, characterized in that: A plurality of barbs (431a1) are provided on the top of the accommodating groove (431a) in a direction toward the connecting tube (410); The barbs (431a1) are used to defoam the liquid entering the connecting pipe (410) when the elastic defoaming member (430) is compressed.

4. The mixing tank of oxytetracycline hydrochloride according to claim 2, characterized in that: A funnel-shaped contraction opening (411) is provided in the middle of the connecting pipe (410); The funnel-shaped contraction opening (411) is provided with a plurality of puncture needles (412) toward the receiving groove (431a) of the telescopic rod (431) so as to further defoam the liquid entering the connecting tube (410).

5. The mixing tank of oxytetracycline hydrochloride according to claim 1, characterized in that: The separation section (130) is arranged above the abutting section (120) and is in communication with the feed port (110) of the tank body (100); When the elastic defoaming member (430) rotates to the abutting section (120), the elastic defoaming member (430) is squeezed by the abutting section (120); when the elastic defoaming member (430) rotates to the separation section (130), the elastic defoaming member (430) pops outwards under the action of elastic force.

6. The mixing tank of oxytetracycline hydrochloride according to claim 5, characterized in that: The abutting section (120) is provided with a plurality of convex strips (140) at intervals along the axial direction and towards the axis of the tank body (100); When the elastic defoaming member (430) rotates along with the stirring shaft (200) and passes through the convex strip (140), it repeatedly expands and contracts along the axial direction of the connecting tube (410) to eliminate bubbles in the liquid that has entered the connecting tube (410).

7. The mixing tank of oxytetracycline hydrochloride according to claim 1, characterized in that: A liquid outlet (413) is provided at one end of the connecting pipe (410) close to the stirring shaft (200); The elastic defoaming member (430) is provided with a liquid inlet (431b).

8. The mixing tank of oxytetracycline hydrochloride according to claim 1, characterized in that: The connecting tubes (410) are divided into a plurality of groups, and the connecting tubes (410) in each group of the connecting tubes (410) are arranged at intervals along the axial direction of the stirring shaft (200); A plurality of groups of the connecting pipes (410) are arranged at intervals along the radial direction of the stirring shaft (200).

9. A working method applied to the mixing tank of oxytetracycline hydrochloride as claimed in claim 1, characterized in that: The working method comprises: Injecting the liquid to be stirred into the tank (100); Controlling the stirring motor (300) to operate so that the rotation speed of the stirring component (400) exceeds a critical value; When the elastic defoaming member (430) rotates to the separation section (130), the liquid at the liquid surface of the tank body (100) is sent into the connecting pipe (410); When the elastic defoaming member (430) rotates to the abutting section (120), bubbles in the liquid entering the connecting pipe (410) are eliminated.

10. The method for operating the mixing tank of oxytetracycline hydrochloride according to claim 9, characterized in that: The abutting section (120) is provided with a plurality of convex strips (140) at intervals along the axial direction and towards the axis of the tank body (100); The working method also includes: When the elastic defoaming member (430) rotates to pass through the convex strip (140), it repeatedly expands and contracts along the axial direction of the connecting pipe (410) to eliminate bubbles in the liquid that has entered the connecting pipe (410).

Images