A neat cement mixer

Abstract

The present application discloses a pure slurry mixer, which relates to the technical field of pure slurry mixers. Not only can it efficiently scrape the materials adhering to the bottom and wall of the pot into the mixing pot to ensure that they are fully mixed and fully reacted, but its one-way valve assembly can be automatically opened and closed, which greatly simplifies the operating steps. The mixer includes a base and a power device, a transmission device, a stirring assembly, a stirring pot assembly and a one-way valve assembly arranged on the base; the two ends of the transmission device are connected to the power device and the stirring assembly; the stirring assembly includes a stirring impeller and a scraper; the scraper can scrape off the materials to be stirred attached to the side wall and bottom wall of the stirring pot assembly; a one-way valve assembly is provided above the stirring pot assembly, and the one-way valve assembly includes a first valve inlet, a second valve inlet, a first valve outlet and a second valve outlet; the first valve outlet is connected to a vacuum pump; the second valve inlet is connected to a carbon dioxide gas source, and the first valve inlet and the second valve outlet are both connected to the stirring pot assembly.

Description

Technical Field

[0001] The present application relates to the technical field of cement slurry mixers, and in particular to a slurry mixer. Background Art

[0002] MSWI FA (Municipal Solid Waste Incineration Fly Ash) is a hazardous solid waste, and its detoxification, solidification, and resource utilization are challenges faced worldwide. In recent years, the use of cement to solidify MSWI FA has garnered widespread attention both domestically and internationally. Furthermore, since large amounts of carbon dioxide emissions contribute to the greenhouse effect and carbon dioxide reacts with cement-based materials to enhance their strength, the use of cement-based materials to solidify MSWI FA and store carbon dioxide has become an important approach to reducing greenhouse gas emissions and solidifying MSWI FA.

[0003] However, due to the extremely high specific surface area of MSWI FA, after adding water and stirring, the slurry has strong viscosity and adheres to the mixing pot wall and the mixing impeller, further causing uneven mixing of MSWI FA, cement and water, affecting the treatment results.

[0004] In addition, the existing carbonization method is to first open the exhaust valve, start the vacuum pump, and evacuate the stirring pot to remove air. After the container reaches a certain vacuum degree, the exhaust valve and the vacuum pump are closed, and then the air inlet valve and the carbon dioxide cylinder switch are opened. When the pressure in the stirring pot reaches a certain value, the air inlet valve and the carbon dioxide cylinder switch are closed. The operation is very cumbersome. Summary of the Invention

[0005] The embodiments of the present application provide a slurry mixer that can not only efficiently scrape materials adhering to the bottom and walls of the pot into the mixing pot to ensure that they are fully mixed and reacted, but also its one-way valve assembly can be automatically opened and closed, greatly simplifying the operating steps.

[0006] To achieve the above-mentioned objectives, an embodiment of the present application provides a slurry mixer, comprising a base and a power device, a transmission device, a stirring assembly, a stirring pot assembly and a one-way valve assembly arranged on the base; the stirring assembly is located in the stirring pot assembly; the inlet of the transmission device is connected to the power device, and the outlet is connected to the stirring assembly; the stirring assembly comprises a stirring impeller and a scraper; the stirring impeller can stir the material to be stirred in the stirring pot assembly; the scraper can scrape off the material to be stirred attached to the side wall and bottom wall of the stirring pot assembly; a one-way valve assembly is provided above the stirring pot assembly, and the one-way valve assembly comprises a first valve inlet, a second valve inlet, a first valve outlet and a second valve outlet; the first valve outlet is connected to a vacuum pump; the second valve inlet is connected to a carbon dioxide gas source, and the first valve inlet and the second valve outlet are both connected to the stirring pot assembly.

[0007] Furthermore, the motor is arranged in a vertical direction; the transmission device includes a reduction gear box, a bevel gear pair and a planetary gear train; the motor is connected to the stirring assembly through the reduction gear box, the bevel gear pair and the planetary gear train in sequence.

[0008] Furthermore, the planetary gear train is located in the stirring pot assembly; the bevel gear pair includes a driving bevel gear and a passive bevel gear; the passive bevel gear is connected to the planetary gear train through a hollow transmission shaft; the upper end of the hollow transmission shaft is connected to a rotary joint; the first valve outlet and the second valve inlet are both connected to the upper end inner hole of the rotary joint through an air pipeline; the one-way valve group is connected to the base; the lower end inner hole of the hollow transmission shaft is connected to the stirring pot assembly.

[0009] Furthermore, the stirring pot assembly includes a stirring pot and a top cover sealedly connected to the mouth of the stirring pot; the top cover is connected to the base; the planetary gear system includes a sun gear, multiple planetary gears, an inner ring gear and a planetary carrier; the inner ring gear is connected to the top cover; the sun gear and the planetary carrier are both connected to the hollow transmission shaft, and the planetary carrier can rotate around the hollow transmission shaft; the multiple planetary gears are respectively connected to the planetary carrier through corresponding planetary gear shafts, the upper end of the planetary gear shaft is fixedly connected to the planetary gear, and the lower end is rotatably connected to the planetary carrier.

[0010] Furthermore, there are multiple scrapers, all of which are connected to the lower end surface of the planetary frame and are equidistantly distributed along the circumferential direction; and the stirring impeller is connected to the lower end of one of the planetary gear shafts.

[0011] Furthermore, there are three scrapers and three planetary wheels; the planetary frame includes six connecting arms uniformly distributed along the circumferential direction; three of the connecting arms arranged at intervals are connected to the scrapers, and the other three connecting arms are respectively connected to the corresponding planetary wheel shafts.

[0012] Furthermore, the scraper knife includes a side knife and a horizontal knife connected to the lower end of the side knife; the side knife is a spiral knife with a thin front edge and a thick rear edge; the horizontal knife is a straight knife with a thin front edge and a thick rear edge, and the cross-sectional area of the horizontal knife gradually decreases from the outer edge of the circle to the center of the circle and shrinks to a point at the center of the circle.

[0013] Furthermore, the one-way valve assembly includes a valve sleeve, a vacuum valve core, a pressurizing valve core, a vacuum valve head and a pressurizing valve head; the vacuum valve core and the pressurizing valve core are both arranged in the valve sleeve; the first valve inlet and the second valve outlet are both arranged on the valve sleeve and are both connected to the stirring pot assembly; the first valve outlet is arranged at the upper port portion of the vacuum valve head and is used to connect to the vacuum pump; the second valve inlet is arranged at the upper port portion of the pressurizing valve head and is used to connect to the carbon dioxide gas source; when vacuuming, the air in the stirring pot assembly enters the vacuum pump through the first valve inlet and the first valve outlet; when pressurizing carbon dioxide, the carbon dioxide in the carbon dioxide gas source enters the stirring pot assembly through the second valve inlet and the second valve outlet.

[0014] Furthermore, a vacuum valve core installation cavity and a pressurized valve core installation cavity are provided in the valve sleeve, the vacuum valve core is located in the vacuum valve core installation cavity, the vacuum valve head is connected to the mouth of the vacuum valve core installation cavity, and the vacuum valve core can move up and down in the vacuum valve core installation cavity; the pressurized valve core installation cavity is located in the pressurized valve core installation cavity, the pressurized valve head is connected to the mouth of the pressurized valve core installation cavity, and the pressurized valve core can move up and down in the pressurized valve core installation cavity; an air flow channel is provided on the vacuum valve core; a carbon dioxide flow channel is provided on the pressurized valve core; when vacuuming, the vacuum valve core moves upward, and the two ends of the air flow channel are respectively connected to the first valve inlet and the first valve outlet; when carbon dioxide is injected, the pressurized valve core moves downward, and the two ends of the carbon dioxide flow channel are respectively connected to the second valve inlet and the second valve outlet.

[0015] Furthermore, a clamp-shaped clamp is provided on the base, and the stirring pot is connected to the base via the clamp-shaped clamp.

[0016] This application has the following beneficial effects:

[0017] 1. The embodiment of the present application arranges multiple scrapers in the stirring pot, and drives the sun gear in the planetary gear system to rotate through a motor, thereby driving the stirring impeller connected to the lower end of the planetary gear shaft and the scraper connected to the lower end of the planetary frame to rotate, so as to efficiently scrape the materials adhering to the bottom and wall of the pot into the stirring pot for stirring, ensuring that they are fully mixed and reacted.

[0018] 2. The one-way valve assembly in the embodiment of the present application can automatically open and close when vacuuming and adding carbon dioxide, eliminating the need to manually open or close the gas valve, greatly simplifying the operating steps.

[0019] 3. In the embodiment of the present application, the shaft connected between the passive bevel gear and the sun gear is set as a hollow transmission shaft, so that it has the functions of both the transmission shaft and the air pipeline, and a rotary joint is set on the upper end surface of the passive bevel gear to connect the pipeline of the one-way valve group with the center hole of the hollow transmission shaft, thereby shortening the length of the exposed air pipeline, preventing the pipeline from being entangled, and making the structure of the entire device more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a structural diagram of a slurry mixer according to an embodiment of the present application;

[0022] Figure 2 Schematic diagram of the decomposition structure of the stirring assembly and planetary gear system in the slurry mixer of the embodiment of the present application

[0023] Figure 3 This is a schematic diagram of the connection structure between the hollow transmission shaft, the passive bevel gear, the top cover, and the planetary gear train in the slurry mixer according to an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamp in the slurry mixer according to an embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of the exploded structure of a one-way valve assembly in a slurry mixer according to an embodiment of the present application;

[0026] Figure 6 This is a diagram showing the closed state of the one-way valve assembly in the slurry mixer according to an embodiment of the present application;

[0027] Figure 7 This is a diagram showing the vacuum valve core of the one-way valve assembly in the slurry mixer according to an embodiment of the present application in an open state;

[0028] Figure 8 This is a diagram of the pressurized valve core of the one-way valve assembly in the slurry mixer according to an embodiment of the present application in the open state. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 a limitation on this application.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0033] Reference Figure 1 , the embodiment of the present application provides a pure pulp mixer. It should be noted that, in order to clearly show the structure of the embodiment of the present application, Figure 1 The slurry mixer comprises a base 1 and a power device 2, a transmission device, a stirring assembly 3, a stirring pot assembly 4 and a one-way valve assembly 5 arranged on the base 1.

[0034] The inlet of the transmission device is connected to the output of the power unit 2, and the outlet of the transmission device is connected to the stirring assembly 3. The stirring assembly 3 includes a stirring impeller 31 and a scraper 32. Both the stirring impeller 31 and the scraper 32 are located within the stirring pot assembly 4. The stirring impeller 31 can stir the material to be stirred within the stirring pot assembly 4, and the scraper 32 can scrape the material to be stirred that adheres to the side walls and bottom walls of the stirring pot assembly 4.

[0035] A one-way valve assembly 5 is located above the stirring pot assembly 4. The one-way valve assembly 5 includes a first valve inlet 51, a first valve outlet 52, a second valve inlet 53, and a second valve outlet 54. The first valve outlet 52 is connected to a vacuum pump (not shown). The second valve inlet 53 is connected to a carbon dioxide gas source, such as a carbon dioxide gas cylinder (not shown). Both the first valve inlet 51 and the second valve outlet 54 are connected to the interior of the stirring pot assembly 4.

[0036] Reference Figure 3 In some embodiments, the stirring pot assembly 4 includes a stirring pot 41 and a top cover 42 sealed to the mouth of the stirring pot 41. Specifically, the top cover 42 is fixed to the base 1. The bottom inner edge of the top cover 42 is provided with a second ridge 421 and a sealing ring (not shown). The top outer edge of the stirring pot 41 has a first ridge 411 that mates with the second ridge 421. This ensures that the top cover 42 can be tightly fastened to the stirring pot 41, and the stirring pot 41 is removable.

[0037] Continue to refer to Figure 1 In some embodiments, the power device 1 is a motor, and the transmission device includes a reduction gearbox 6, a bevel gear pair 7, and a planetary gear train 8. The motor and planetary gear train 8 are both arranged vertically, and the motor is fixed to the base 1. Specifically, the output end of the motor is sequentially connected to the reduction gearbox 6, the bevel gear pair 7, the planetary gear train 8, and the stirring assembly 3. This facilitates the installation of the motor and stirring assembly 3 and the adjustment of the stirring assembly 3's rotational speed.

[0038] Reference Figure 1 and Figure 3 In some embodiments, the bevel gear pair 7 includes a driving bevel gear 71 and a driven bevel gear 72. The driving bevel gear 71 is arranged in the horizontal direction and is connected to the reduction gearbox 6. The driven bevel gear 72 is arranged in the vertical direction, and its lower end is connected to the planetary gear train 8 through a hollow transmission shaft 9. The hollow transmission shaft 9 is a hollow structure, so it can serve as both a transmission shaft and a channel for gas inlet and outlet. The lower end of the hollow transmission shaft 9 is connected to the planetary gear train 8 after passing through the through hole on the top cover 42. Specifically, two first seals 11 are provided between the top cover 42 and the hollow transmission shaft 9, and a deep groove ball bearing 12 is further provided between the two first seals 11. A bearing seat 13 for fixing the outer ring of the deep groove ball bearing 12 is further provided on the outside of the first seal 11 and the deep groove ball bearing 12. As a result, the hollow transmission shaft 9 can both rotate in the through hole of the top cover 42 and prevent gas from leaking from the through hole of the top cover 42.

[0039] Reference Figure 2 and Figure 3, a rotary joint 14 is provided at the upper end of the passive bevel gear 72. The outer cylindrical surface and inner hole of the upper end of the hollow transmission shaft 9 are both provided with threads, wherein the outer cylindrical surface is threadedly connected to the passive bevel gear 72, and the inner hole is threadedly connected to the rotary joint 14. The one-way valve assembly 5 is fixedly connected to the base 1. The upper end air port of the rotary joint 14 is connected to the first valve outlet 52 and the second valve inlet 53 of the one-way valve assembly 5 through the air pipeline 16. The lower end air port of the rotary joint 14 is connected to the upper end of the internal through hole of the hollow transmission shaft 9. The lower end of the internal through hole of the hollow transmission shaft 9 is connected to the stirring pot assembly 4. Therefore, when the passive bevel gear 72 and the hollow transmission shaft 9 rotate, the one-way valve assembly 5 and the air pipeline 16 will not rotate.

[0040] Reference Figures 1 to 3 , the planetary gear train 8 is located in the stirring pot assembly 4. The planetary gear train 8 includes a sun gear 81, a plurality of planetary gears 82, an inner ring gear 83 and a planetary carrier 84. Among them, the planetary carrier 84 is located below the sun gear 81, the inner ring gear 83 is connected to the top cover 42, the sun gear 81 is connected to the hollow transmission shaft 9 by a thread, and the planetary carrier 84 is rotatably connected to the hollow transmission shaft 9 through a first thrust ball bearing 85. The lower end of the first thrust ball bearing 85 is also provided with a retaining spring 86 to prevent the bearing 85 from falling out. The plurality of planetary gears 82 are respectively connected to the planetary carrier 84 through the corresponding planetary gear shaft 87. Specifically, the upper end of the planetary gear shaft 87 is connected to the planetary gear 82 through a key, the middle part is connected to the planetary carrier 84 through a second thrust bearing 88, and the lower end is provided with an external thread. The lower end of any planetary gear shaft 87 is connected to the stirring impeller 31 through a thread.

[0041] Continue to refer to Figure 2 In some embodiments, there are three scrapers 32 and three planetary wheels 82. The planetary frame 84 includes six connecting arms 841 evenly distributed along the circumference, wherein the lower end faces of three spaced connecting arms 841 are respectively connected to a scraper 32, and the other three connecting arms 841 are respectively connected to the corresponding planetary wheel shafts 87. Specifically, the upper end of the scraper 32 is provided with a clamping block 321, and the corresponding connecting arm 841 is provided with a bayonet 842 adapted to the clamping block 321. When installing the scraper 32, extend the clamping block 321 into the bayonet 842 and then tighten it with a top screw. In this way, the three scrapers 32 can be evenly distributed along the circumference and rotate with the planetary frame 84, and the stirring impeller 31 can rotate and revolve with the planetary wheel.

[0042] In some embodiments, the scraper 32 includes a side blade 322 and a horizontal blade 323 connected to the lower end of the side blade 322. The side blade 322 is a spiral blade with a thin leading edge and a thick trailing edge, while the horizontal blade 323 is a linear blade with a thin leading edge and a thick trailing edge. The cross-sectional area of the horizontal blade 323 gradually decreases from the outer edge of the circle toward the center, converging at a point at the center. This allows the material to be mixed to be easily scraped off the side walls and bottom wall of the mixing pot 41.

[0043] The stirring impeller 31 is a propeller type, with multiple layers evenly distributed along the axial direction, and each layer is provided with three blades.

[0044] Reference Figure 1 and Figure 4 In some embodiments, the center of the bottom of the mixing pot 41 extends downward to form a cylindrical protrusion (not shown). A clamp 15 is provided on the base 1. The mixing pot 41 is connected to the base 1 via the clamp 15. Specifically, the clamp 15 includes a fixed clamp 151, a movable clamp 152, and a buckle 153. The fixed clamp 151 is fixed to the base 1, the movable clamp 152 is hinged to the base 1, and the buckle 153 is connected between the buckles of the fixed clamp 151 and the movable clamp 152. When the buckle 153 is engaged, the fixed clamp 151 and the movable clamp 152 close together and securely hold the cylindrical protrusion at the bottom of the mixing pot 41. When the buckle 153 is released, the fixed clamp 151 and the movable clamp 152 separate, allowing the mixing pot 41 to be removed. Compared to the prior art structure in which the mixing pot 41 is connected to the base 1 via a threaded connection, the embodiment of the present application makes it easier to assemble and disassemble the mixing pot 41.

[0045] Reference Figure 5 In some embodiments, the one-way valve assembly 5 includes a valve sleeve 55, a vacuum valve core 56, a pressurizing valve core 57, a vacuum valve head 58 and a pressurizing valve head 59. The vacuum valve core 56 and the pressurizing valve core 57 are both arranged in the valve sleeve 55. The first valve inlet 51 and the second valve outlet 54 are both arranged on the valve sleeve 55, and both are connected to the stirring pot assembly 4. The vacuum valve head 58 and the pressurizing valve head 59 are both tubular, and the first valve outlet 52 is located at the upper end of the vacuum valve head 58 for connecting to the vacuum pump. The second valve inlet 53 is located at the upper end of the pressurizing valve head 59 for connecting to the carbon dioxide gas source. When evacuating, the air in the stirring pot assembly 4 enters the vacuum pump through the first valve inlet 51 and the first valve outlet 52. When pressurizing carbon dioxide, the carbon dioxide in the carbon dioxide gas source enters the stirring pot assembly 4 through the second valve inlet 53 and the second valve outlet 54.

[0046] In some embodiments, the valve sleeve 55, vacuum valve core 56, and pressurized valve core 57 are all cylindrical. A vacuum valve core mounting cavity 551 and a pressurized valve core mounting cavity 552 are defined within the valve sleeve 55. Both the vacuum valve core mounting cavity 551 and the pressurized valve core mounting cavity 552 are three-step axial holes, with their diameters decreasing from top to bottom, and the lower step holes are threaded.

[0047] The vacuum valve core 56 is located within the vacuum valve core mounting cavity 551. Its outer diameter matches the diameter of the stepped hole in the middle section, while its length is shorter than the length of the stepped hole in the middle section. Three sealing grooves are axially defined on its side, each of which is fitted with a sealing ring: a first upper sealing ring 561, a first middle sealing ring 562, and a first lower sealing ring 563. A transverse hole is defined between the first middle sealing ring 562 and the first lower sealing ring 563. An axial hole is defined on the top surface of the vacuum valve core 56, connecting this hole to the transverse hole. Together, the transverse and axial holes form an air flow channel 564.

[0048] The structure of the pressurized valve core 57 is similar to that of the vacuum valve core 56, also including a second upper sealing ring 571, a second middle sealing ring 572, and a second lower sealing ring 573. The only difference is that the transverse hole is located between the second upper sealing ring 571 and the second middle sealing ring 572, and the transverse hole and the axial hole together form a carbon dioxide flow channel 574.

[0049] The vacuum valve head 58 is connected to the mouth of the vacuum valve core installation cavity 551, that is, the upper section of the stepped hole. Specifically, a flange connection portion 581 is provided on the vacuum valve head 58, and the flange connection portion 581 is connected to the upper end surface of the valve sleeve 55 by a first screw 582. Thus, after the vacuum valve core 56 is installed, the vacuum valve core 56 is confined between the bottom surface of the vacuum valve head 58 and the top surface of the second-step through hole, and the vacuum valve core 56 can move up and down in the vacuum valve core installation cavity 551. The first valve inlet 51 is located on the side wall of the vacuum valve core installation cavity 551. Thus, when the second screw 553 is installed on the threaded hole, a closed space can be formed at the bottom of the vacuum valve core installation cavity 551, and the gas pressure is equal to the atmospheric pressure at the time of installation.

[0050] The pressure valve core installation chamber 552 is located inside the pressure valve core installation chamber 552. The structure of the pressure valve core installation chamber 552 is the same as that of the vacuum valve core installation chamber 551. The structure of the pressure valve head 59 is also the same as that of the vacuum valve head 58, which will not be described in detail here.

[0051] Specifically, the height of the first valve inlet 51 meets the following requirements: when the bottom surface of the vacuum valve head 58 contacts the bottom surface of the second-step through hole, the first valve inlet 51 is located between the first upper sealing ring 551 and the first middle sealing ring 552; when the top surface of the vacuum valve head 58 contacts the bottom surface of the vacuum valve head 58, the first valve inlet 51 is located between the first middle sealing ring 552 and the first lower sealing ring 553.

[0052] The configuration requirements of the second valve outlet 54 are the same as above and will not be described in detail here.

[0053] Reference Figures 6 to 8When vacuum is applied, the gas pressure at the top of the vacuum valve core 56 decreases, and the gas pressure on the top surface decreases and is smaller than the gas pressure on the bottom surface. Therefore, under the action of the pressure difference, the vacuum valve core 56 moves upward until its top surface contacts the bottom surface of the vacuum valve head 58. At this time, the transverse hole of the vacuum valve core 56 is opposite to the first valve inlet 51, the vacuum valve core 56 opens, and the air in the stirring pot 41 is extracted. At this time, the space at the bottom of the vacuum valve core 56 becomes larger, but the amount of gas in this space remains unchanged. According to the ideal gas state equation:

[0054] PV=nRT

[0055] Where P is the gas pressure, V is the gas volume, n is the amount of gas substance, R is the ideal gas constant, and T is the temperature.

[0056] During this process, n, R, and T in the closed space at the bottom of the vacuum valve core 56 remain unchanged, V increases, and P decreases. After the vacuum pump is turned off, the air pressure at the top of the vacuum valve core 56 returns to atmospheric pressure. At this time, the gas pressure on its top is greater than the gas pressure on its bottom. Under the action of the pressure difference, the vacuum valve core 56 moves downward until it contacts the second-step top surface of its bottom surface. At this time, the first valve inlet 51 is located between the first upper sealing ring 551 and the first middle sealing ring 552, and the vacuum valve core 56 is closed.

[0057] When high-pressure carbon dioxide is filled, the gas pressure at the top of the pressurizing valve core 57 is greater than the gas pressure at the bottom. The pressurizing valve core 57 moves downward under the action of the pressure difference until its bottom surface contacts the bottom surface of the second-step through hole. At this time, the transverse hole of the pressurizing valve core 57 is opposite to the second valve outlet 54, the pressurizing valve core 57 is opened, and gas is filled into the stirring pot 41. Since the gas at its bottom is compressed, the pressure increases. When the pressurization is stopped, the gas pressure at the top of the pressurizing valve returns to atmospheric pressure, and the gas pressure on the top surface is less than the gas pressure on the bottom surface. The pressurizing valve core 57 moves upward under the action of the pressure difference until its top surface contacts the bottom surface of the pressurizing valve head 59. At this time, the second valve outlet 54 is located between the second middle sealing ring 572 and the second lower sealing ring 573, and the pressurizing valve core 57 is closed.

[0058] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A slurry mixer, characterized in that: It includes a base and a power device, a transmission device, a stirring assembly, a stirring pot assembly and a one-way valve assembly arranged on the base; the stirring assembly is located in the stirring pot assembly; The inlet of the transmission device is connected to the power device, and the outlet is connected to the stirring assembly; the stirring assembly includes a stirring impeller and a scraper; the stirring impeller can stir the material to be stirred in the stirring pot assembly; the scraper can scrape off the material to be stirred attached to the side wall and bottom wall of the stirring pot assembly; A one-way valve assembly is provided above the stirring pot assembly, the one-way valve assembly comprising a first valve inlet, a second valve inlet, a first valve outlet, and a second valve outlet; the first valve outlet is connected to a vacuum pump; the second valve inlet is connected to a carbon dioxide gas source, and both the first valve inlet and the second valve outlet are connected to the stirring pot assembly; The power device is a motor, which is arranged in a vertical direction; the transmission device includes a reduction gear box, a bevel gear pair and a planetary gear train; the motor is connected to the stirring assembly through the reduction gear box, the bevel gear pair and the planetary gear train in sequence; The planetary gear train is located within the stirring pot assembly; the bevel gear pair includes a driving bevel gear and a driven bevel gear; the driven bevel gear is connected to the planetary gear train via a hollow transmission shaft; the upper end of the hollow transmission shaft is connected to a rotary joint; the first valve outlet and the second valve inlet are both connected to the upper air port of the rotary joint via air pipelines; the one-way valve assembly is connected to the base; the inner hole at the lower end of the hollow transmission shaft is connected to the stirring pot assembly; The stirring pot assembly includes a stirring pot and a top cover sealedly connected to the mouth of the stirring pot; the top cover is connected to the base; the planetary gear system includes a sun gear, a plurality of planetary gears, an inner ring gear and a planet carrier; the inner ring gear is connected to the top cover; the sun gear and the planet carrier are both connected to the hollow transmission shaft, and the planet carrier is capable of rotating around the hollow transmission shaft; The plurality of planetary gears are connected to the planetary carrier through corresponding planetary gear shafts respectively. The upper ends of the planetary gear shafts are fixedly connected to the planetary gears, and the lower ends are rotatably connected to the planetary carrier.

2. The slurry mixer according to claim 1, characterized in that: There are multiple scrapers, all of which are connected to the lower end surface of the planetary frame and are equidistantly distributed along the circumference; the stirring impeller is connected to the lower end of one of the planetary wheel shafts.

3. The slurry mixer according to claim 2, characterized in that: There are three scrapers and three planetary wheels; the planetary frame includes six connecting arms uniformly distributed along the circumference; three of the connecting arms arranged at intervals are connected to the scrapers, and the other three connecting arms are respectively connected to the corresponding planetary wheel shafts.

4. The slurry mixer according to claim 3, characterized in that: The scraper knife includes a side knife and a horizontal knife connected to the lower end of the side knife; the side knife is a spiral knife with a thin front edge and a thick rear edge; the horizontal knife is a straight knife with a thin front edge and a thick rear edge, and the cross-sectional area of the horizontal knife gradually decreases from the outer edge of the circle to the center of the circle and shrinks to a point at the center of the circle.

5. The slurry mixer according to claim 1, characterized in that: The one-way valve assembly includes a valve sleeve, a vacuum valve core, a pressurizing valve core, a vacuum valve head, and a pressurizing valve head; the vacuum valve core and the pressurizing valve core are both disposed within the valve sleeve; the first valve inlet and the second valve outlet are both disposed on the valve sleeve and are both connected to the stirring pot assembly; the first valve outlet is disposed at an upper end portion of the vacuum valve head and is used to connect to a vacuum pump; the second valve inlet is disposed at an upper end portion of the pressurizing valve head and is used to connect to a carbon dioxide gas source; When vacuuming, the air in the stirring pot assembly enters the vacuum pump through the first valve inlet and the first valve outlet; when carbon dioxide is injected, the carbon dioxide in the carbon dioxide gas source enters the stirring pot assembly through the second valve inlet and the second valve outlet.

6. The slurry mixer according to claim 5, characterized in that: The valve sleeve is provided with a vacuum valve core installation cavity and a pressurized valve core installation cavity, the vacuum valve core is located in the vacuum valve core installation cavity, the vacuum valve head is connected to the mouth of the vacuum valve core installation cavity, and the vacuum valve core can move up and down in the vacuum valve core installation cavity; The pressurizing valve core installation cavity is located in the pressurizing valve core installation cavity, the pressurizing valve head is connected to the mouth of the pressurizing valve core installation cavity, and the pressurizing valve core can move up and down in the pressurizing valve core installation cavity; The vacuum valve core is provided with an air flow channel; the pressurized valve core is provided with a carbon dioxide flow channel; When vacuuming, the vacuum valve core moves upward, and the two ends of the air flow channel are respectively connected to the first valve inlet and the first valve outlet; when pressurizing carbon dioxide, the pressurizing valve core moves downward, and the two ends of the carbon dioxide flow channel are respectively connected to the second valve inlet and the second valve outlet.

7. The slurry mixer according to claim 1, characterized in that: A clamp-shaped clamp is provided on the base, and the stirring pot is connected to the base through the clamp-shaped clamp.

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