Novel powder-liquid vacuum mixing system

Abstract

The invention discloses a novel powder-liquid vacuum mixing system which comprises a vacuum mixing tank, a vacuum pump set, a plurality of powder feeding pipelines, a liquid feeding pipeline and a material circulating pipeline, and the powder feeding pipelines are connected with feeding ports formed in the vacuum mixing tank. The liquid feeding pipeline is connected with a liquid inlet formed in the vacuum mixing tank, a weighing sensor is arranged at the bottom of the vacuum mixing tank, one end of the material circulating pipeline is connected with a discharging port formed in the vacuum mixing tank, and the other end of the material circulating pipeline is connected with the heat exchange assembly and the casein conversion tank. The connecting mode of the feeding valve and the vacuum mixing tank is redesigned, the feeding valve is directly welded to the tank wall of the vacuum mixing tank, and the problems that mixing is not uniform, water is stored, and a powder inlet is blocked due to powder moisture are solved; the flow blocking cover and the spoiler are arranged in the vacuum mixing tank, so that liquid can be guided into the shearing head, and self-absorption is realized under the function of spoiler, so that the mixing effect of the material liquid is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum mixing, in particular to a novel powder-liquid vacuum mixing system. BACKGROUND

[0002] The vacuum mixing system realizes material suction under the negative pressure of the mixing tank, controls the feeding amount by the weight sensor, closes the valve to stop feeding when the material liquid reaches the set weight value, and realizes mixing in the mixing tank, and is widely used in chemical industry, pharmaceutical industry, food processing, pharmaceutical industry, and agricultural industry.

[0003] In the existing vacuum mixing system, such as the vacuum conveying and mixing system disclosed in patent CN111318203A and the vacuum high-speed mixing tank disclosed in patent CN209663193U, although the vacuum mixing function can be realized, the existing process still has various problems in the production process, and cannot meet the actual demand, and the following problems need to be improved:

[0004] 1. The powder inlet of the above-mentioned mixing tank is arranged at the bottom of the tank body, and the pipeline of the valve is usually welded on the outer wall of the tank body, which will cause dead angles in the mixing tank during the material suction and mixing process, resulting in uneven mixing. Moreover, the existing feeding method is intermittent feeding, and a certain amount of water will be stored behind the valve, which will wet the powder when the valve is opened for the second time, thereby causing the powder at the valve to block the powder inlet.

[0005] 2. The mixing tank lacks a turbulence structure (or only two stainless steel vertical plates are arranged), and cannot realize the dispersion and mixing of the material liquid.

[0006] 3. During vacuum material suction, the suction direction of the mixed liquid is consistent with the vacuum inlet. When the valve is opened, the material liquid is sprayed to the upper part of the tank body, and then is sucked into the vacuum pump inlet, and then is introduced into the vacuum pump through the pipeline, thereby causing damage to the equipment and loss of the material liquid.

[0007] 4. In terms of process, the existing mixing system directly transports the mixed material to the next process after mixing, and cannot realize the casein conversion function in the mixing process.

[0008] 5. In the circulation process of the material, the system does not realize the shearing emulsification effect, and the material particles cannot be fully mixed.

[0009] 6. The mixing tank needs to be cleaned together with the heat exchanger in the cleaning process, the circulation pipeline path is long, the cleaning time is long, the efficiency is low, and the heat exchanger requires a large amount of water for cleaning, thereby causing energy waste.

[0010] In summary, the existing vacuum mixing system needs to be improved. SUMMARY

[0011] To solve the above technical problems, the application discloses a novel powder-liquid vacuum mixing system, which comprises a vacuum mixing tank, a vacuum pump group, a plurality of powder feeding pipelines, a liquid feeding pipeline and a material circulation pipeline, the vacuum pump group is connected with a vacuum material suction port arranged at the top of the mixing tank, the plurality of powder feeding pipelines are respectively connected with feeding ports arranged on the vacuum mixing tank, a first feeding valve is arranged on each of the powder feeding pipelines, the liquid feeding pipeline is connected with a liquid inlet port arranged on the vacuum mixing tank, a second feeding valve is arranged on the liquid feeding pipeline, a weighing sensor is arranged on the tank bottom of the vacuum mixing tank and the liquid feeding pipeline, one end of the material circulation pipeline is connected with a discharge port arranged on the vacuum mixing tank, and the other end is connected with a heat exchange assembly and a casein conversion tank, and a material pump and a shearing emulsification pump are arranged on the material circulation pipeline.

[0012] Further, the liquid feeding pipeline is connected with a cleaning assembly, the cleaning assembly comprises a CIP control unit, a pre-water cleaning tank, a pre-alkali water cleaning tank, a pre-acid water cleaning tank and a first heat exchanger, a water inlet of the pre-water cleaning tank is connected with a municipal water source, and a water outlet is connected with a cleaning inlet of the vacuum mixing tank; a water inlet of the pre-alkali water cleaning tank is connected with a concentrated alkali water source, and a water outlet is connected with the cleaning inlet of the vacuum mixing tank; a water inlet of the pre-acid water cleaning tank is connected with a concentrated acid water source, and a water outlet is connected with the cleaning inlet of the vacuum mixing tank; a water inlet of the first heat exchanger is respectively connected with the pre-water cleaning tank, the pre-alkali water cleaning tank and the pre-acid water cleaning tank, and a water outlet is connected with the cleaning inlet of the vacuum mixing tank, and the CIP control unit is connected with the pre-water cleaning tank, the pre-alkali water cleaning tank, the pre-acid water cleaning tank and the first heat exchanger through electric signals.

[0013] Further, the heat exchange assembly comprises a second heat exchanger, a third heat exchanger and a bypass pipe in parallel, material inlets of the second heat exchanger, the third heat exchanger and the bypass pipe are connected with the vacuum mixing tank, material outlets thereof are connected with rear-end equipment, a medium inlet of the second heat exchanger is connected with a fourth heat exchanger, and a medium inlet of the third heat exchanger is connected with an ice water source.

[0014] Further, a water inlet of the fourth heat exchanger is connected with a steam heat source, and a water outlet is connected with a condensate water return interval, a medium inlet of the fourth heat exchanger is connected with a municipal water source, and a medium outlet is connected with a medium inlet of the second heat exchanger.

[0015] Further, a plurality of casein conversion tanks are connected at the rear end of the material circulation pipeline, an air inlet at the top of the casein conversion tank is connected with a nitrogen source, a discharge port at the bottom of the casein conversion tank is connected with a return port of the vacuum mixing tank through a return pipeline, and a circulating pump is arranged on the return pipeline.

[0016] Further, an arc-shaped flow baffle is arranged at the powder inlet of the bottom of the vacuum mixing tank, and a plurality of inclined spoiler plates are arranged on the inner wall of the bottom of the vacuum mixing tank in a circumferential manner.

[0017] Further, a feeding valve is welded on the tank wall outside the powder inlet.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] I. The connection mode of the feeding valve and the vacuum mixing tank is redesigned, and the feeding valve is directly welded on the tank wall of the vacuum mixing tank, so that there is no dead angle, no wetting of the powder, and no water residue during the powder adding process, solving the problems of uneven mixing, water storage, and powder blockage of the powder inlet due to moisture;

[0020] II. The flow baffle and the spoiler plate arranged in the vacuum mixing tank can guide the liquid to the inside of the shear head, realize self-suction under the function of flow disturbance, and improve the mixing effect of the material liquid;

[0021] III. The casein conversion and shear emulsification functions are increased, so that the material particles are more delicate, and the powder and liquid are more fully and uniformly mixed;

[0022] IV. The mixing path is redesigned, so that the vacuum mixing system can solve the problems of long circulating pipeline path, long cleaning time, low efficiency, and energy waste caused by large water consumption for cleaning the heat exchanger during the cleaning process;

[0023] V. The CIP cleaning system can improve the production efficiency, reduce the risk of cross contamination, and help maintain product quality and safety. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is the structural layout diagram of the present application;

[0026] Figure 2 is the structural layout diagram of the cleaning assembly in the present application;

[0027] Figure 3 is the structural layout diagram of the casein conversion tank in the present application;

[0028] Figure 4 is the internal structure plan view of the vacuum mixing tank in the present application;

[0029] Figure 5It is a partial structure sectional view of the vacuum mixing tank in the present application.

[0030] Reference signs:

[0031] 10 - vacuum mixing tank, 11 - powder inlet, 12 - arc-shaped flow barrier, 13 - spoiler, 14 - feeding valve, 20 - vacuum pump group, 30 - powder feeding pipeline, 31 - first feeding valve, 32 - weighing sensor, 40 - liquid feeding pipeline, 41 - second feeding valve, 42 - bypass pipe, 50 - material circulation pipeline, 51 - material pump, 52 - shearing emulsifying pump, 60 - first heat exchanger, 70 - CIP control unit, 80 - preposed water cleaning tank, 90 - preposed alkali water cleaning tank, 100 - preposed acid water cleaning tank, 110 - second heat exchanger, 120 - third heat exchanger, 130 - fourth heat exchanger, 140 - ice water source, 150 - casein conversion tank, 160 - nitrogen source, 170 - return pipeline, 171 - circulation pump. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0033] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0034] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features.

[0035] In the description of the embodiments, unless otherwise explicitly specified and limited, the terms "set", "connected", etc. should be understood in a broad sense. For example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] For example, Figure 1As shown, the new powder-liquid vacuum mixing system in the embodiment includes a vacuum mixing tank 10, a vacuum pump set 20, a plurality of powder feeding pipes 30, a liquid feeding pipe 40, and a material circulation pipe 50; the thick solid line in the figure represents the flow path of the material, the thin solid line represents the flow path of the cleaning water, the dotted line represents the flow path of the steam, and the dashed line represents the electrical control path.

[0037] The vacuum pump set 20 is connected with a vacuum suction port arranged at the top of the mixing tank 10, the plurality of powder feeding pipes 30 are respectively connected with feeding ports arranged on the vacuum mixing tank 10, each of the powder feeding pipes 30 is respectively provided with a first feeding valve 31, the liquid feeding pipe 40 is connected with a liquid inlet arranged on the vacuum mixing tank 10, the liquid feeding pipe 40 is provided with a second feeding valve 41, the bottom of the vacuum mixing tank 10 and the liquid feeding pipe 40 are respectively provided with a weighing sensor 32, one end of the material circulation pipe 50 is connected with a discharge port arranged on the vacuum mixing tank 10, and the other end is connected with a heat exchange assembly, and the material circulation pipe 50 is provided with a material pump 51 and a shear emulsification pump 52.

[0038] Various powder materials such as sugar, vegetable fat powder, and plant fat powder can be added into the vacuum mixing tank 10 through the plurality of powder feeding pipes 30, and the adding amount of the various materials is controlled by the weighing sensor 32; liquid materials such as water, oil, and milk can be added into the vacuum mixing tank 10 through the liquid feeding pipe 40, and the adding amount of the various materials is controlled by the weighing sensor 32.

[0039] The material pump 51 is used to deliver the mixed material out of the tank for subsequent circulation treatment or delivery to the next process; under the high-speed rotation of the rotor of the shear emulsification pump 52, strong mechanical and hydraulic shearing, liquid layer friction, impact tearing are formed to make the material fully dispersed, broken, emulsified, and homogenized, and the material is shot out through the stator slot, so that the material becomes more delicate and the oil and water are mixed.

[0040] When the tank is cleaned, the hose is connected to the cleaning assembly, such as Figure 2As shown, the cleaning assembly includes a first heat exchanger 60, a CIP control unit 70, a pre-water cleaning tank 80, a pre-alkali water cleaning tank 90, a pre-acid water cleaning tank 100, the water inlet of the pre-water cleaning tank 80 is connected to a municipal water source, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank 10; the water inlet of the pre-alkali water cleaning tank 90 is connected to a concentrated alkali water source, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank 10; the water inlet of the pre-acid water cleaning tank 100 is connected to a concentrated acid water source, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank 10; the water inlets of the first heat exchanger 60 are respectively connected to the pre-water cleaning tank 80, the pre-alkali water cleaning tank 90 and the pre-acid water cleaning tank 100, and the water outlet is connected to the cleaning inlet of the vacuum mixing tank 10; the CIP control unit 70 is connected to the first heat exchanger 60, the pre-water cleaning tank 80, the pre-alkali water cleaning tank 90 and the pre-acid water cleaning tank 100 through electrical signals.

[0041] The CIP control unit 70 is electrically connected to the first heat exchanger 60. CIP is the abbreviation of Cleaning-In-Place, which means "in-situ cleaning". This system can thoroughly clean and disinfect the production line by circulating cleaning agents, disinfectants and clean water. The cleaning and disinfecting stock solution is water, alkali 2.5%, hot water and acid 2%. The cleaning sequence is clean water-alkali water-clean water-acid water-hot water. Without disassembly or movement of the equipment, the CIP cleaning system can improve production efficiency, reduce the risk of cross contamination, and help maintain product quality and safety.

[0042] After production, the CIP cleaning system is connected to the vacuum mixing tank 10 to clean and disinfect the tank body and the pipeline inside. The circulating pipeline is short, the cleaning efficiency is high, and the problem of long circulating pipeline path, long cleaning time and low efficiency of traditional mixing system is solved. The energy waste caused by large amount of water used for cleaning the heat exchanger is also solved.

[0043] The heat exchange assembly includes a second heat exchanger 110, a third heat exchanger 120 and a bypass pipe 42 connected in parallel. The material inlets of the second heat exchanger 110, the third heat exchanger 120 and the bypass pipe 42 are connected to the vacuum mixing tank 10, and the material outlets are connected to the rear-end equipment. The medium inlets and outlets of the second heat exchanger 110 are connected to the fourth heat exchanger 130, and the medium inlets and outlets of the third heat exchanger 120 are connected to the ice water source 140.

[0044] The water inlet of the fourth heat exchanger 130 is connected to a steam heat source, and the water outlet is connected to a condensate return interval. The medium inlet of the fourth heat exchanger 130 is connected to a municipal water source, and the medium outlet is connected to the medium inlet of the second heat exchanger 110.

[0045] The pure water is heated by the fourth heat exchanger 130 and then enters the second heat exchanger 110 to heat the material. The condensed steam of the heat exchange returns to the condensed water return interval. The third heat exchanger 120 is used to cool the material. According to different requirements, the material can enter the second heat exchanger 110 or the third heat exchanger 120 through the valve control.

[0046] As shown in Figure 3 The rear end of the material circulation pipeline 50 is connected with multiple casein conversion tanks 150. The gas inlet at the top of the casein conversion tank 150 is connected with a nitrogen source 160. The nitrogen can prevent the physical change of casein due to the change of air pressure during storage, thereby ensuring the stability of product quality.

[0047] Casein is the main protein in milk and goat milk, which has many physiological effects such as preventing osteoporosis and rickets, regulating blood pressure, treating iron deficiency anemia, and treating magnesium deficiency neuritis. The process of casein conversion in the casein conversion tank 150 is as follows: add water at a certain temperature, first configure a certain amount of alkali solution, add casein after stirring, wait for a certain time; secondly, configure a certain amount of alkali solution, stir for a certain time; thirdly, configure a certain amount of alkali solution, stir for a certain time; finally, sample, detect, temporarily store, and transport to the next process.

[0048] The discharge port at the bottom of the casein conversion tank 150 is connected with the return port of the vacuum mixing tank 10 through the return pipeline 170. The circulation pump 171 is arranged on the return pipeline 170.

[0049] As shown in Figure 4 An arc-shaped flow blocking cover 12 is arranged at the powder inlet 11 at the bottom of the vacuum mixing tank 10, which has a certain shielding effect on the material, prevents the material from being directly sucked into the vacuum pump set 20 under the action of negative pressure, thereby prolonging the service life of the equipment and reducing the loss of the material.

[0050] A plurality of inclined baffles 13 are arranged on the inner wall of the bottom of the vacuum mixing tank 10 in a circumferential manner, which can guide the liquid to the inside of the shear head and realize self-suction under the function of flow disturbance, thereby improving the mixing effect of the material liquid.

[0051] As shown in Figure 5 A feeding valve 14 is welded on the tank wall outside the powder inlet 11. The feeding valve 14 welded on the vacuum mixing tank 10 has the advantages of no dead angle, no wetting of the powder, and no water residue during the powder adding process, which solves the problems of uneven mixing, water storage, and blockage of the powder inlet due to wet powder.

[0052] In summary, the application redesigns the connection mode of the feed valve and the vacuum mixing tank, directly welds the feed valve on the tank wall of the vacuum mixing tank, so that there is no dead angle, no wetting of the powder, and no water residue in the powder adding process, solves the problems of uneven mixing, water storage and powder blocking due to wet powder.

[0053] The flow barrier and the spoiler plate arranged in the vacuum mixing tank can guide the liquid to the inside of the shear head, realize self-suction under the function of the spoiler, and improve the mixing effect of the material liquid.

[0054] The casein conversion and shear emulsification function are increased, so that the material particles are more delicate, and the powder and liquid are more fully and uniformly mixed.

[0055] The mixing path is redesigned, so that the vacuum mixing system can solve the problems of long circulating pipeline path, long cleaning time, low efficiency, and energy waste caused by large water consumption for cleaning the heat exchanger during the cleaning process.

[0056] The CIP cleaning system can improve the production efficiency, reduce the risk of cross contamination, and help maintain product quality and safety.

[0057] The above only describes the preferred embodiments of the application and is not intended to limit the application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the protection scope of the application. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled persons in the art; when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the application.

Claims

1. A novel powder-liquid vacuum mixing system, characterized in that: The system includes a vacuum mixing tank, a vacuum pump unit, multiple powder feed pipes, a liquid feed pipe, and a material circulation pipe. The vacuum pump unit is connected to a vacuum suction port located at the top of the mixing tank. The multiple powder feed pipes are respectively connected to feed ports located on the vacuum mixing tank. Each powder feed pipe is equipped with a first feed valve. The liquid feed pipe is connected to a liquid inlet located on the vacuum mixing tank and is equipped with a second feed valve. Weighing sensors are installed at the bottom of the vacuum mixing tank and on the liquid feed pipes. One end of the material circulation pipe is connected to the discharge port located on the vacuum mixing tank, and the other end is connected to a heat exchange component and a casein conversion tank. The material circulation pipe is equipped with a material pump and a shear emulsification pump.

2. The novel powder-liquid vacuum mixing system according to claim 1, characterized in that: The liquid feed pipeline is connected to a cleaning assembly, which includes a CIP control unit, a pre-cleaning water tank, a pre-cleaning alkaline water tank, a pre-cleaning acid water tank, and a first heat exchanger. The inlet of the pre-cleaning water tank is connected to a municipal water source, and the outlet is connected to the cleaning inlet of the vacuum mixing tank. The inlet of the pre-cleaning alkaline water tank is connected to a concentrated alkaline water source, and the outlet is connected to the cleaning inlet of the vacuum mixing tank. The inlet of the pre-cleaning acid water tank is connected to a concentrated acid water source, and the outlet is connected to the cleaning inlet of the vacuum mixing tank. The inlet of the first heat exchanger is connected to the pre-cleaning water tank, the pre-cleaning alkaline water tank, and the pre-cleaning acid water tank, respectively, and the outlet is connected to the cleaning inlet of the vacuum mixing tank. The CIP control unit is connected to the pre-cleaning water tank, the pre-cleaning alkaline water tank, the pre-cleaning acid water tank, and the first heat exchanger via electrical signals.

3. The novel powder-liquid vacuum mixing system according to claim 1, characterized in that: The heat exchange assembly includes a second heat exchanger, a third heat exchanger, and a bypass pipe connected in parallel. The material inlets of the second heat exchanger, the third heat exchanger, and the bypass pipe are all connected to a vacuum mixing tank, and the material outlets of the third heat exchanger are all connected to downstream equipment. The medium inlet and outlet of the second heat exchanger are connected to a fourth heat exchanger, and the medium inlet and outlet of the third heat exchanger are connected to an ice water source.

4. The novel powder-liquid vacuum mixing system according to claim 3, characterized in that: The inlet of the fourth heat exchanger is connected to a steam heat source, and the outlet is connected to a condensate return chamber. The medium inlet of the fourth heat exchanger is connected to a municipal water source, and the medium outlet is connected to the medium inlet of the second heat exchanger.

5. The novel powder-liquid vacuum mixing system according to any one of claims 1-4, characterized in that: The rear end of the material circulation pipeline is connected to multiple sets of casein conversion tanks. The air inlet at the top of the casein conversion tank is connected to a nitrogen source. The discharge port at the bottom of the casein conversion tank is connected to the return port of the vacuum mixing tank through a return pipeline. A circulation pump is installed on the return pipeline.

6. The novel powder-liquid vacuum mixing system according to claim 5, characterized in that: The vacuum mixing tank has an arc-shaped baffle at the powder inlet at the bottom, and multiple inclined baffles are arranged circumferentially on the inner wall of the bottom of the vacuum mixing tank.

7. The novel powder-liquid vacuum mixing system according to claim 6, characterized in that: A feed valve is welded to the outer wall of the tank at the powder inlet.

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