A ball mill suitable for producing culture medium dry powder

Abstract

The present invention discloses a ball mill suitable for the production of culture medium dry powder, comprising: a base, one end of which is provided with a motor box and a driving motor, and the other end is provided with a support frame; a protective shell is fixedly provided between the motor box and the support frame; a ball mill tank, which is arranged in the protective shell, and its structure comprises: a ball mill inner tank, which is provided with a feed port and a discharge port, and a plurality of steel balls are placed in the internal cavity of the ball mill inner tank; a fixed steel ring is integrally formed on the surface of one end of the ball mill inner tank, and a circular groove is provided on the fixed steel ring; a middle steel ring is sleeved on the surface of the ball mill inner tank, and a mounting position is provided on the middle steel ring; an external steel ring is sleeved on the surface of the ball mill inner tank; an electric heating pipe and a refrigeration pipe; a ball mill outer shell; and a hydraulic support rod is provided between the protective cover and the protective shell. The present invention realizes the cooling control of the culture medium dry powder in the ball mill inner tank, and at the same time reduces the labor intensity of steel ball sterilization, reduces the production process, and avoids contamination of the culture medium dry powder.

Description

Technical Field

[0001] The present invention belongs to the technical field of ball mill equipment, and more specifically, the present invention relates to a ball mill suitable for producing culture medium dry powder. Background Art

[0002] The culture medium is a liquid or solid nutrient prepared artificially. It is the basis for the cultivation and preservation of cells or microorganisms. The culture medium should contain the nutrients required for the cultivation of the corresponding cells or microorganisms, including water, nitrogen source, carbon source, inorganic salts, vitamins, growth factors, peptone, agar, broth extract powder, yeast extract powder, indicators, etc. The culture medium can be classified into liquid culture medium, semi-solid culture medium, solid culture medium, and biochemical culture medium according to the physical and chemical properties. The culture medium described in the present invention is a solid powder culture medium. The culture medium production process can be roughly divided into dry method and wet method. The dry method is to process the material by crushing and mixing. The wet method is to dissolve part or all of the material with a specific solvent, mix it, and dry it to prepare a powder. The production of solid powder culture medium is actually the process of crushing a variety of materials with different properties, different properties, and different amounts to a certain particle size and mixing them evenly. The conventional production process includes crushing and mixing processes.

[0003] Among the commonly used pulverizing equipment, the ball mill can grind and mix the temperature-sensitive materials in ultra-fine grinding, and the grinding fineness can reach more than 300 meshes. The ball mill tank is equipped with a cooling interlayer, and the working temperature of the ball mill is reduced by conveying cooling water or other refrigerants. According to the properties of the materials and process requirements, dry grinding can be adopted, and the number of steel balls in the ball mill and the speed of the mill barrel can be adjusted to make the machine achieve the best production efficiency.

[0004] Brief introduction to the crushing and mixing principle of the ball milling process: The ball mill is filled with many grinding bodies (i.e. steel balls) of different specifications. When the tank rotates, the materials and the grinding bodies adhere to the inner wall of the tank and rotate with the tank under the action of friction and centrifugal force. When the tank reaches the critical speed, due to the action of gravity, the grinding bodies fall freely or fall, thereby impacting, squeezing and grinding the materials, and the materials are gradually crushed and mixed evenly. The entire process of crushing and mixing is carried out simultaneously in the ball mill, eliminating the cumbersome secondary screening, secondary crushing, and multiple mixing problems. This process does not require the introduction of large-scale equipment, solvents and other media, and the production process is monitored in real time. In case of abnormal problems, the machine can be stopped at any time to correct the parameters.

[0005] However, the protective cover of the existing ball mill is a manual switch, which needs to be pushed up and down manually, consuming physical strength; in terms of feeding, the existing ball mill adopts horizontal feeding; the existing ball mill body contains a ball mill feeding port, which can only be opened to observe the situation of the material in the cylinder. At the same time, the feeding port of the existing ball mill is opened on the cylindrical cavity of the ball mill, and the cylinder rotates parallel to the ground. The existing ball mill intelligent external chiller cools the ball mill, but this method occupies a large space and generates high costs; when the existing ball mill is used for the production of sterile products, it is necessary to clean and sterilize the ball mill cylinder, that is, the steel balls inside, to avoid confusion and contamination. The weight of the steel ball itself is large, and the total weight of the steel balls used in a slightly larger ball mill is even tons. If the steel balls are removed for sterilization, it is time-consuming and laborious, and there are great safety hazards, which are easy to cause dangers such as being smashed. Therefore, a ball mill for the production of culture medium dry powder is needed, which occupies a small space for the cooling device and is easy to sterilize the steel balls. Summary of the invention

[0006] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages which will be described hereinafter.

[0007] In order to achieve these purposes and other advantages according to the present invention, a ball mill suitable for producing dry powder of culture medium is provided, comprising:

[0008] A base, one end of which is provided with a motor box, in which a driving motor is installed, and the other end of the base is provided with a support frame; a protective shell is fixedly provided between the motor box and the support frame;

[0009] A ball mill is disposed in the protective shell, and one end of the ball mill is fixedly connected to the motor shaft of the driving motor, and the other end of the ball mill is fixedly connected to a rotating shaft, and the end of the rotating shaft is rotatably connected to the support frame through a ball bearing;

[0010] The structure of the ball mill comprises:

[0011] A ball mill inner tank is provided with a feed inlet and a discharge outlet, and a plurality of steel balls are placed in the inner cavity of the ball mill inner tank;

[0012] A fixed steel ring is integrally formed on one end surface of the ball mill inner tank, and a plurality of circular grooves are arranged on the fixed steel ring; a middle steel ring is sleeved on the surface of the ball mill inner tank, and a plurality of mounting positions corresponding to the circular grooves are arranged on the middle steel ring; an outer steel ring is sleeved on the surface of the ball mill inner tank, and the outer steel ring fixes the middle steel ring to one side of the fixed steel ring through bolts and locking nuts;

[0013] A plurality of electric heating tubes are arranged around the surface of the inner tank of the ball mill, and cooling tubes are arranged between the electric heating tubes, and one end of the electric heating tube and the cooling tube are fixed in the installation position by a mounting member;

[0014] A ball mill shell, which is fixed to the outside of the ball mill inner tank by rivets, and the ball mill shell is provided with a square opening in contact with the discharge port;

[0015] The upper end of the protective shell is rotatably connected with a protective cover, a hydraulic support rod is arranged between the protective cover and the protective shell, and two ends of the hydraulic support rod are rotatably connected with the protective shell and the protective cover respectively.

[0016] Preferably, a heat insulation mechanism is provided between the inner tank of the ball mill and the outer shell of the ball mill; a limited slot is integrally formed on the surface of the inner tank of the ball mill along the axial direction, and a fixed slot is integrally formed on the inner wall of the outer shell of the ball mill; one end of the heat insulation mechanism is fixedly connected to the fixed slot by a rivet, and the other end is clamped in the limited slot; the structure of the heat insulation mechanism includes:

[0017] two insulation panels;

[0018] The heat-insulating wool layer is bonded and fixed between two heat-insulating panels.

[0019] Preferably, the structure of the mounting member includes:

[0020] The arc-shaped mounting bracket has locking bolts threadedly connected at both ends and a fixing screw threadedly connected at the middle of the arc-shaped mounting bracket;

[0021] Screw holes matching the locking bolts are respectively arranged on both sides of the installation position, a fixing screw hole is arranged in the installation position, fixing through holes are opened at the ends of the electric heating tube and the refrigeration tube, and the fixing screw rod passes through the fixing through hole and is threadedly connected with the fixing screw hole.

[0022] Preferably, a plurality of clamping members are arranged axially on the surface of the inner tank of the ball mill, and the structure of the clamping members includes:

[0023] A clamping ring, which is fixedly arranged on the surface of the ball mill inner tank;

[0024] Two clamping bolts, which are respectively threadedly connected to two ends of the clamping ring;

[0025] The electric heating tube and the refrigeration tube are clamped and fixed in the clamping ring by clamping bolts.

[0026] Preferably, a transparent observation window is provided at one end of the ball mill, in which a wireless infrared probe or a colorimetric card is embedded; and a transparent window is provided on the side wall of the protective shell and the protective cover corresponding to the transparent observation window.

[0027] Preferably, a discharge port is provided on the protective shell, a discharge valve is installed in the discharge port, and a ball mill trolley with rollers and a push rod is provided below the discharge port.

[0028] Preferably, a stainless steel guide ramp is provided on one side of the base.

[0029] Preferably, the power supply cable of the electric heating tube is led out of the ball mill shell through a threading hole; an installation box is installed at one end of the ball mill shell by bolts, a rechargeable battery is arranged in the installation box, and the power supply cable of the electric heating tube is connected to the rechargeable battery.

[0030] Preferably, the transparent observation window is a polycarbonate plate.

[0031] Preferably, the ball mill shell is provided with a sandwich structure, and a heat-insulating cotton layer is provided in the sandwich structure;

[0032] The feed inlet is arranged at the end of the inner tank of the ball mill, and a sealing cover is fastened on the feed inlet by bolts.

[0033] The present invention includes at least the following beneficial effects: the ball mill suitable for the production of culture medium dry powder provided by the present invention achieves the purpose of high-temperature drying and sterilization of the steel balls in the ball mill jar by setting the structure of the ball mill jar as a sandwich structure of a ball mill inner tank and a ball mill outer shell, and installing electric heating tubes and refrigeration tubes on the surface of the ball mill inner tank through mounting positions and mounting parts; avoids the tedious labor of carrying steel balls, reduces the labor intensity and production process of operators, and improves the production efficiency of culture medium dry powder; the ball mill inner tank can be cooled by the refrigeration tube, saving the space occupied by the traditional refrigeration unit; at the same time, the electric heating tube and the refrigeration tube are fixed by a three-layer fixed design of a fixed steel ring, a middle steel ring and an outer steel ring, and the structure is stable and the reliability of use is high.

[0034] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the front structure of a ball mill suitable for producing culture medium dry powder provided by the present invention;

[0036] Figure 2 A schematic diagram of the side structure of a ball mill suitable for producing culture medium dry powder provided by the present invention;

[0037] Figure 3 A schematic diagram of the axial cross-sectional structure of a ball mill provided by the present invention;

[0038] Figure 4 A schematic diagram of the radial cross-sectional structure of the ball mill provided by the present invention along the discharge port;

[0039] Figure 5 for Figure 3 The enlarged cross-sectional view at point A in the middle;

[0040] Figure 6 This is a schematic diagram of the partial structure of the middle steel ring and mounting parts provided by the present invention. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0042] It should be understood that terms such as “having”, “including” and “comprising” used herein do not specify the existence or addition of one or more other elements or combinations thereof.

[0043] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, in the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] like Figure 1-6As shown: A ball mill suitable for producing culture medium dry powder of the present invention comprises:

[0047] A base 1, one end of which is provided with a motor box 2, in which a driving motor is installed, and the other end of the base 1 is provided with a support frame 4; a protective housing 5 is fixedly provided between the motor box 2 and the support frame 4;

[0048] A ball mill 6 is disposed in the protective shell 5, and one end of the ball mill 6 is fixedly connected to the motor shaft of the driving motor, and the other end of the ball mill 6 is fixedly connected to a rotating shaft 61, and the end of the rotating shaft 61 is rotatably connected to the support frame 4 through a ball bearing 62;

[0049] The structure of the ball mill 6 includes:

[0050] The ball mill inner tank 7 is provided with a feed inlet 71 and a discharge outlet 72, and a plurality of steel balls are placed in the inner cavity of the ball mill inner tank 7;

[0051] One end surface of the ball mill inner tank 7 is integrally formed with a fixed steel ring 8, and a plurality of circular grooves 81 are arranged on the fixed steel ring 8; a middle steel ring 9 is sleeved on the surface of the ball mill inner tank 7, and a plurality of mounting positions 91 corresponding to the circular grooves 81 are arranged on the middle steel ring 9; an outer steel ring 10 is sleeved on the surface of the ball mill inner tank 7, and the outer steel ring 10 fixes the middle steel ring 9 to one side of the fixed steel ring 8 by means of bolts 25 and locking nuts;

[0052] A plurality of electric heating tubes 11 are arranged around the surface of the ball mill inner tank 7, and cooling tubes 12 are arranged between the electric heating tubes 11. One end of the electric heating tubes 11 and the cooling tubes 12 are fixed in the installation position 91 by a mounting member;

[0053] A ball mill shell 13, which is fixed to the outside of the ball mill inner tank 7 by rivets, and a square opening 131 in contact with the discharge port 72 is provided on the ball mill shell 13;

[0054] The upper end of the protective shell 5 is rotatably connected with a protective cover 14 , a hydraulic support rod 15 is provided between the protective cover 14 and the protective shell 5 , and both ends of the hydraulic support rod 15 are rotatably connected with the protective shell 5 and the protective cover 14 .

[0055] Working principle: the material for processing the culture medium powder enters the ball mill inner tank 7 from the feed port 71 of the ball mill inner tank 7, the driving motor drives the ball mill 6 to rotate, so that the steel balls continuously impact the grinding material, and when the culture medium powder is crushed and ground by the steel balls, the culture medium powder is discharged from the discharge port 72 of the ball mill inner tank 7 and the square opening 131 of the ball mill outer shell 13; in the process of grinding the material with the steel balls, the refrigeration pipe 12 is used to cool the inside of the ball mill inner tank 7, so that the culture medium powder in the ball mill inner tank 7 is maintained at a suitable grinding temperature. Here, a closed tube body that can be pre-filled with cooling water can be used in the refrigeration pipe 12, that is, before connecting and fixing the ball mill outer shell 13 and the ball mill inner tank 7, the cooling water is filled into the closed tank body, and after cooling, the ball mill outer shell 13 is removed, the refrigeration pipe 12 is taken out, and the cooling water is discharged. After the grinding of the culture medium dry powder is completed, the electric heating tube 11 is turned on to sterilize the steel balls in the ball mill inner tank 7. This arrangement avoids the tedious labor of carrying the steel balls for sterilization, and improves the efficiency of sterilization and culture medium dry powder production. The operation process of taking out the refrigeration tube 12 should be set after the electric heating tube 11 performs electric heating sterilization on the steel balls. The present invention uses a three-layer fixed design of a fixed steel ring 8, a middle steel ring 9 and an outer steel ring 10 for the electric heating tube 11 and the refrigeration tube 12, and at the same time, a mounting position 91 is set on the middle steel ring 9, and a circular groove 81 is set on the fixed steel ring 8. The circular groove 81 effectively limits the electric heating tube 11 and the refrigeration tube 12, so that the installation of the electric heating tube 11 and the refrigeration tube 12 is more stable, and will not be displaced or shaken with the continuous rotation of the ball mill 6, thereby ensuring the reliability of the use of the ball mill 6. A hydraulic support rod 15 is provided between the protective shell 5 and the protective cover 14 , so that no manpower is required to open the protective cover, thus saving manpower cost. The protective cover 14 can be opened and closed by the hydraulic support rod 15 .

[0056] In the above technical solution, a heat insulation mechanism 16 is provided between the ball mill inner tank 7 and the ball mill outer shell 13; the surface of the ball mill inner tank 7 is integrally formed with a limit slot 73 along the axial direction, and the inner wall of the ball mill outer shell 13 is integrally formed with a fixed slot 132, one end of the heat insulation mechanism 16 is fixedly connected to the fixed slot 132 by rivets, and the other end is clamped in the limit slot 73; the structure of the heat insulation mechanism 16 includes:

[0057] Two heat insulation panels 161;

[0058] The heat-insulating cotton layer 162 is adhered and fixed between the two heat-insulating panels 161. The heat-insulating mechanism 16 is used to isolate the electric heating tube 11 and the refrigeration tube 12 to reduce the heat transfer between the two. Although the electric heating tube 11 and the refrigeration tube 12 are not turned on at the same time, after the electric heating tube 11 is turned on to sterilize the steel balls, when materials are added to the ball mill inner tank 7 for grinding again in a short time, the electric heating tube 11 will have a certain amount of residual heat, and at this time, the refrigeration tube 12 needs to be installed and used to cool the ball mill inner tank 7. Therefore, the heat-insulating mechanism 16 is set here to effectively reduce the heat transfer between the electric heating tube 11 and the refrigeration tube 12. Since the ball mill inner tank 7 can be used again in a short time after disinfection, this setting can quickly and efficiently use the ball mill 6 for culture medium dry powder grinding processing, thereby improving production efficiency. At the same time, the heat insulation mechanism 16 is designed with two heat insulation panels 161 clamping a heat insulation cotton layer 162. The heat insulation panels 161 effectively support the heat insulation cotton layer 162, so that the heat insulation cotton layer 162 can be fixed by the heat insulation panels 161; the setting of the limiting slot 73 and the fixing slot 132 realizes a more stable installation and fixation of the heat insulation mechanism 16.

[0059] In the above technical solution, the structure of the mounting member includes:

[0060] The arc-shaped mounting bracket 17 has locking bolts 171 threadedly connected at both ends thereof, and a fixing screw 172 threadedly connected at the middle portion of the arc-shaped mounting bracket 17;

[0061] Screw holes matching the locking bolts 171 are respectively arranged on both sides of the installation position 91, a fixing screw hole is arranged in the installation position 91, and fixing through holes 111 are arranged at the ends of the electric heating tube 11 and the refrigeration tube 12, and the fixing screw 172 passes through the fixing through hole 111 and is threadedly connected with the fixing screw hole. This arrangement of the mounting member realizes the stable installation and fixation of the refrigeration tube 12 and the electric heating tube 11, and this arrangement also facilitates the installation and disassembly of the refrigeration tube 12 and the electric heating tube 11.

[0062] In the above technical solution, a plurality of clamping members 18 are arranged axially on the surface of the ball mill inner tank 7, and the structure of the clamping members 18 includes:

[0063] A clamping ring 181, which is fixedly arranged on the surface of the ball mill inner tank 7;

[0064] Two clamping bolts 182, which are respectively threadedly connected to two ends of the clamping ring 181;

[0065] The electric heating tube 11 and the cooling tube 12 are clamped and fixed in the clamping ring 181 by the clamping bolts 182. The clamping member 18 is used to fix the remaining tube bodies of the electric heating tube 11 and the cooling tube 12 except the ends, further improving the stability of the installation of the electric heating tube 11 and the cooling tube 12.

[0066] In the above technical solution, a transparent observation window 63 is provided at one end of the ball mill 6, and a wireless infrared probe or a colorimetric card is embedded in the transparent observation window 63; a transparent window 19 is provided on the side wall of the protective shell 5 and the protective cover 14 corresponding to the transparent observation window 63. The material situation in the ball mill inner tank 7 can be observed in real time through the transparent window 19 and the transparent observation window 63, and the wireless infrared probe or the colorimetric card is used to monitor the grinding temperature of the material.

[0067] In the above technical solution, a discharge port 51 is provided on the protective shell 5, a discharge valve 52 is installed in the discharge port 51, and a ball mill trolley 20 with rollers and a push rod is provided below the discharge port.

[0068] In the above technical solution, a stainless steel ramp 101 is provided on one side of the base 1. When the culture medium dry powder is ground by the steel balls, the discharge port 72 of the ball mill inner tank 7 and the square opening 131 of the ball mill outer shell 13 are rotated to directly above the discharge port 51, the discharge port 72 is opened, and the culture medium dry powder is poured into the ball mill trolley 20 from the discharge port 51. The discharge of the culture medium dry powder can be controlled by the discharge valve 52, and the stainless steel ramp 101 facilitates the ball mill trolley 20 to be pushed to the bottom of the discharge port 51 and the base 1 is pushed down.

[0069] In the above technical solution, the power supply cable of the electric heating tube 11 is led out of the ball mill housing 13 through the threading hole; a mounting box 21 is installed at one end of the ball mill housing 13 by bolts, a rechargeable battery is arranged in the mounting box 21, and the power supply cable of the electric heating tube 11 is connected to the rechargeable battery. The arrangement of installing the rechargeable battery on the ball mill 6 allows the rechargeable battery to rotate with the ball mill 6, thereby avoiding the entanglement and knotting of the power supply cable during the rotation of the ball mill 6.

[0070] In the above technical solution, the transparent observation window 63 is a polycarbonate plate, which has the advantages of high strength, light weight, flame retardancy, sound insulation, and good light transmittance.

[0071] In the above technical solution, the ball mill shell 13 is provided with a sandwich structure, and the sandwich structure is provided with a heat-insulating cotton layer 133. When the refrigeration pipe 12 cools the ball mill inner tank 7, the heat-insulating cotton layer 133 can effectively reduce the heat exchange between the ball mill shell 13 and the outside, thereby improving the cooling effect of the refrigeration pipe 12 on the ball mill inner tank.

[0072] The feed inlet 71 is arranged at the end of the ball mill inner tank 7, and a sealing cover 23 is fastened to the feed inlet 71 by bolts. Since the steel ball has the greatest impact force on the cylindrical inner wall of the ball mill inner tank 7 and a smaller impact force on the two ends of the ball mill inner tank 7, the feed inlet 71 is arranged at the end of the ball mill tank 6 to effectively reduce the impact of the steel ball on the sealing cover 23.

[0073] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0074] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A ball mill suitable for producing culture medium dry powder, characterized in that: include: A base, one end of which is provided with a motor box, in which a driving motor is installed, and the other end of the base is provided with a support frame; a protective shell is fixedly provided between the motor box and the support frame; A ball mill is disposed in the protective shell, and one end of the ball mill is fixedly connected to the motor shaft of the driving motor, and the other end of the ball mill is fixedly connected to a rotating shaft, and the end of the rotating shaft is rotatably connected to the support frame through a ball bearing; The structure of the ball mill comprises: A ball mill inner tank is provided with a feed inlet and a discharge outlet, and a plurality of steel balls are placed in the inner cavity of the ball mill inner tank; A fixed steel ring is integrally formed on one end surface of the ball mill inner tank, and a plurality of circular grooves are arranged on the fixed steel ring; a middle steel ring is sleeved on the surface of the ball mill inner tank, and a plurality of mounting positions corresponding to the circular grooves are arranged on the middle steel ring; an outer steel ring is sleeved on the surface of the ball mill inner tank, and the outer steel ring fixes the middle steel ring to one side of the fixed steel ring through bolts and locking nuts; A plurality of electric heating tubes are arranged around the surface of the inner tank of the ball mill, and cooling tubes are arranged between the electric heating tubes, and one end of the electric heating tube and the cooling tube are fixed in the installation position by a mounting member; A ball mill shell, which is fixed to the outside of the ball mill inner tank by rivets, and the ball mill shell is provided with a square opening in contact with the discharge port; The upper end of the protective shell is rotatably connected to a protective cover, a hydraulic support rod is provided between the protective cover and the protective shell, and both ends of the hydraulic support rod are rotatably connected to the protective shell and the protective cover respectively; A heat insulation mechanism is provided between the inner tank of the ball mill and the outer shell of the ball mill; a limited slot is integrally formed on the surface of the inner tank of the ball mill along the axial direction, and a fixed slot is integrally formed on the inner wall of the outer shell of the ball mill; one end of the heat insulation mechanism is fixedly connected to the fixed slot by a rivet, and the other end is clamped in the limited slot; the structure of the heat insulation mechanism includes: two insulation panels; A heat-insulating cotton layer, which is bonded and fixed between two heat-insulating panels; The structure of the mounting member comprises: The arc-shaped mounting bracket has locking bolts threadedly connected at both ends and a fixing screw threadedly connected at the middle of the arc-shaped mounting bracket; Screw holes matching the locking bolts are respectively arranged on both sides of the installation position, a fixing screw hole is arranged in the installation position, fixing through holes are opened at the ends of the electric heating tube and the refrigeration tube, and the fixing screw passes through the fixing through hole and is threadedly connected with the fixing screw hole; The surface of the inner tank of the ball mill is provided with a plurality of clamping members along the axial direction, and the structure of the clamping members includes: A clamping ring, which is fixedly arranged on the surface of the ball mill inner tank; Two clamping bolts, which are respectively threadedly connected to two ends of the clamping ring; The electric heating tube and the refrigeration tube are clamped and fixed in the clamping ring by clamping bolts; The ball mill shell is provided with a sandwich structure, and a heat-insulating cotton layer is provided in the sandwich structure; The feed inlet is arranged at the end of the inner tank of the ball mill, and a sealing cover is fastened on the feed inlet by bolts.

2. The ball mill suitable for producing culture medium dry powder according to claim 1, characterized in that: A transparent observation window is arranged at one end of the ball mill, in which a wireless infrared probe or a colorimetric card is embedded; and a transparent window is arranged on the side wall of the protective shell and the protective cover corresponding to the transparent observation window.

3. The ball mill suitable for producing culture medium dry powder according to claim 1, characterized in that: The protective shell is provided with a discharge port, a discharge valve is installed in the discharge port, and a ball mill trolley with rollers and a push rod is provided below the discharge port.

4. The ball mill suitable for producing culture medium dry powder according to claim 3, characterized in that: A stainless steel guide slope is arranged on one side of the base.

5. The ball mill suitable for producing culture medium dry powder according to claim 1, characterized in that: The power supply cable of the electric heating tube is led out of the ball mill shell through the threading hole; an installation box is installed at one end of the ball mill shell through bolts, a rechargeable battery is arranged in the installation box, and the power supply cable of the electric heating tube is connected to the rechargeable battery.

6. The ball mill suitable for producing culture medium dry powder according to claim 2, characterized in that: The transparent observation window is a polycarbonate plate.

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