Accurate compounding, mixing and adding device for double biological enzymes

Abstract

The utility model relates to the technical field of mixing equipment, and discloses a double-bio-enzyme precise compounding, mixing and adding device which comprises a mixing tank used for mixing two bio-enzyme solutions, an inlet of the mixing tank is connected with a mixing metering pump used for pumping the two bio-enzyme solutions into the mixing tank, and the mixing metering pump is connected with an outlet of the mixing tank. The outlet of the mixing tank is connected with a transfer metering pump, and the output end of the transfer metering pump is connected with a slurry pump capable of mixing the biological enzyme solution and the slurry; two bio-enzymes are respectively and accurately conveyed through the mixing metering pump, are fully mixed in the mixing tank and are stably conveyed to the slurry pump through the transfer metering pump, and the bio-enzymes and slurry are uniformly mixed by virtue of stirring of the slurry pump, so that the requirements of related processes on accurate control and efficient mixing in the bio-enzyme and slurry mixing process are met; the accuracy and the effectiveness of biological enzyme application in the whole production process are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mixing equipment technical field, concretely relates to a double biological enzyme accurate compound mixing and adding device. BACKGROUND

[0002] In the papermaking industry, waste paper as an important secondary fiber source, can not only alleviate the problem of fiber raw material shortage and energy shortage, but also help to reduce environmental pollution. But in the paper production, processing and use, the introduction of adhesive, coating adhesive, ink binder, when waste paper pulping, release to the pulp water system, form the adhesive. Adhesive adheres to deposit on the press felt, guide roller or dryer surface and dry net, easy to stick on the paper and cause paper disease. Such as due to the deposition of adhesive causes the net part dehydration efficiency to drop, causes the paper to peel off in the press and drying section in the subsequent process to stick roll and stick cylinder problem, thereby causing the paper to produce hole to form paper disease.

[0003] In order to solve the above problems, the prior art usually adopts the decomposition and oxidation reaction of biological enzyme and adhesive to degrade the different components of adhesive and colloid garbage in the system, so that it is stably dispersed in water and effectively removed; such as adding adhesive control enzyme in the pulp, which can effectively hydrolyze the adhesive into low molecular substances with water solubility; the ester bond of the adhesive in the paper machine system is decomposed by biological enzyme, the adhesion of the adhesive is reduced, the deposition, adhesion and reaggregation performance of the adhesive are reduced, and the deposition of the adhesive on the surface of the paper machine system is effectively inhibited.

[0004] In order to reduce the deposition of adhesive on the forming net and felt of paper machine, and improve the filterability of paper machine, two kinds of biological enzymes are usually mixed together for use; but in the prior art, the mixing efficiency of double biological enzyme is low, the ratio and adding point position are difficult to accurately control, therefore, it is urgent to design a double biological enzyme accurate compound mixing and adding device to overcome the above shortcomings. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the deficiencies in the prior art, and provides a double biological enzyme accurate compound mixing and adding device, which pumps two kinds of biological enzyme solutions into a mixing tank for mixing through a mixing metering pump, and then pumps the mixed solution into a pulp pump for fully mixing with pulp through a transfer metering pump.

[0006] To achieve the above object, the utility model adopts the technical scheme that a double biological enzyme accurate compound mixing and adding device, including the mixing tank for mixing two kinds of biological enzyme solutions, the mixing tank's entrance is connected with the mixing metering pump that pumps two kinds of biological enzyme solutions into the mixing tank, the mixing tank's outlet is connected with the transfer metering pump, and the output end of the transfer metering pump is connected with the pulp pump that can mix biological enzyme solution and pulp.

[0007] Optionally, the mixing metering pump comprises a first metering pump and a second metering pump, which are connected to different inlets of the mixing tank respectively.

[0008] Optionally, the mixing tank is provided with at least two inlets, and the inlets are higher than the outlet.

[0009] Optionally, the mixing tank is provided with a stirring assembly for stirring and mixing the two biological enzyme solutions, and the mixing tank is provided with a heat preservation layer.

[0010] Optionally, the stirring assembly comprises a stirring paddle rotatably installed in the mixing tank, and the stirring paddle is connected to the output end of the first motor.

[0011] Optionally, the input end of the transfer metering pump is connected to the outlet of the mixing tank through a pipeline, and the pipeline is provided with a flow regulating valve.

[0012] Optionally, the slurry pump comprises a pump body and an impeller driven to rotate by a second motor, the impeller is installed in the pump body, and the inlet of the pump body is arranged at a position close to the center of the impeller.

[0013] Optionally, the cleaning system is connected to the pipeline and cavity of the mixing metering pump, the mixing tank, the transfer metering pump and the slurry pump.

[0014] Compared with the prior art, the device has the following beneficial effects:

[0015] (1) In the device, the two biological enzymes are precisely delivered by the mixing metering pump, mixed in the mixing tank, and then delivered to the slurry pump by the transfer metering pump, so that the biological enzymes and the slurry are uniformly mixed by the slurry pump, the accurate control and efficient mixing of the biological enzymes and the slurry in the mixing process are met, and the accuracy and effectiveness of the application of the biological enzymes in the overall production process are improved.

[0016] (2) In the device, the cleaning system is connected to the pipeline and cavity of the mixing metering pump, the mixing tank, the transfer metering pump and the slurry pump, so that the device can be automatically cleaned before and after operation, and biological enzyme residues and pipeline blockage are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the double biological enzyme precise compounding and mixing adding device in the embodiment of the device.

[0018] Figure 2 is a structural schematic view of the mixing tank in the embodiment of the device.

[0019] Wherein, 1, mixing tank; 2, mixing metering pump; 201, first metering pump; 202, second metering pump; 3, transfer metering pump; 4, slurry pump; 5, flow regulating valve; 6, stirring paddle. DETAILED DESCRIPTION

[0020] The utility model will be explained in further detail in combination with the drawings and examples, these drawings are all simplified schematic diagram, only with schematic way shows the basic structure of the utility model, therefore it shows only the structure related to the utility model.

[0021] Example one, as Figure 1 And Figure 2 The utility model discloses a double biological enzyme precision compound mixing device, including mixing tank 1, mixing metering pump 2, transfer metering pump 3 and slurry pump 4, the inlet of mixing tank 1 is connected with mixing metering pump 2, the outlet is connected with the input end of transfer metering pump 3, and the output end of transfer metering pump 3 is connected with the input end of slurry pump 4.

[0022] Mixing tank 1 is used for mixing two biological enzyme solutions, mixing metering pump 2 adopts electromagnetic pulse metering pump, is used for pumping two biological enzyme solutions into mixing tank 1, transfer metering pump 3 adopts frequency conversion metering pump, is used for pumping the biological enzyme solution mixed uniformly in mixing tank 1 to slurry pump 4, and slurry pump 4 can make biological enzyme solution and slurry fully mix.

[0023] The utility model discloses a double biological enzyme precision compound mixing device, including mixing tank 1, mixing metering pump 2, transfer metering pump 3 and slurry pump 4, the inlet of mixing tank 1 is connected with mixing metering pump 2, the outlet is connected with the input end of transfer metering pump 3, and the output end of transfer metering pump 3 is connected with the input end of slurry pump 4.

[0024] The above, mixing metering pump 2 includes first metering pump 201 and second metering pump 202, and the two can independently control flow and be connected at different inlets of mixing tank 1 respectively, wherein, first metering pump 201 can be used for pumping adhesive control enzyme, and deposit ester bond decomposition enzyme is pumped through second metering pump 202.

[0025] Electromagnetic pulse metering pump has high-precision flow control ability, can stably and accurately pump two different biological enzymes into mixing tank 1 according to the ratio determined by accurate experiment and calculation in advance.The driving mode of this pump is electromagnetic drive, can ensure the stability and accuracy of the delivery process, for example, the common DMC200 / DMC201 series electromagnetic pulse metering pump, the flow range is 0-110L / h, can satisfy the demand of different scale production.

[0026] Further, the mixing tank 1 is provided with at least two inlets, and the inlets are at the same height and higher than the outlet.

[0027] The inlet is higher than the outlet, so that the material entering the mixing tank 1 can flow downward under the action of gravity, and a basic flow trend can be formed in the tank without additional power, which helps the preliminary distribution and movement of the material in the tank and creates a good foundation for the subsequent mixing process.

[0028] After the material enters from the high inlet, it will impact the existing material in the tank at a certain speed and angle, forming disturbance, which can make the newly entered material and the original material in the tank more fully contact and mix, improving the uniformity and efficiency of mixing.

[0029] During the mixing process, the material is more likely to flow from high to low due to gravity, and can flow out more smoothly from the outlet, reducing the residue of the material at the bottom and wall of the tank, which is beneficial to keep the mixing tank 1 clean and reduce the probability of cross contamination or deterioration caused by material residue.

[0030] The inlet is higher than the outlet, so that the material has a downward overall flow trend in the tank, which can effectively avoid the accumulation and blockage of the material at the outlet. Because gravity will make the material quickly pass through the outlet area instead of gathering around the outlet, it ensures the smoothness of the outlet, so that the mixed material can be smoothly discharged, maintaining the continuity of the production process.

[0031] The input end of the transfer metering pump 3 is connected to the outlet of the mixing tank 1 through a pipeline, and a flow regulating valve 5 is arranged on the pipeline. The flow regulating valve 5 works with the variable frequency metering pump to accurately control the delivery flow of the biological enzyme solution. The variable frequency metering pump can flexibly adjust the output flow according to the flow demand in actual production, such as the variable frequency metering pump with model GM0330PQ9MNN, which can well adapt to different working conditions. It pumps the compounded biological enzyme solution to the input end of the slurry pump 4.

[0032] The mixing tank 1 is provided with a heat preservation layer, which can maintain the temperature in the mixing tank 1 within the temperature range where the biological enzyme activity is best, to ensure the stability of the biological enzyme activity during the mixing process. The heat preservation layer can be made of rock wool, polyurethane foam or aerogel felt, etc.

[0033] The mixing tank 1 is provided with a stirring assembly for stirring and mixing the two biological enzyme solutions. The stirring assembly includes a stirring paddle 6 rotatably installed in the mixing tank 1, and the stirring paddle 6 is connected to the output end of a first motor. The stirring paddle 6 is installed at the bottom of the mixing tank 1, and the first motor can be installed in the mixing tank 1 or outside the mixing tank 1 according to the requirements. The first motor drives the stirring paddle 6 to rotate, which in turn stirs and mixes the two biological enzyme solutions in the mixing tank 1, so as to ensure that they can be fully mixed.

[0034] The first motor is a variable frequency motor, which can adjust the rotating speed in real time according to the mixing state of the biological enzyme in the mixing tank 1, and the stirring paddle 6 is made of a specific shape and material to enhance the stirring effect and prevent the biological enzyme from adhering, such as an anchor paddle, a spiral paddle and a turbine paddle, etc., which can be made of 316L stainless steel or polytetrafluoroethylene (PTFE).

[0035] The slurry pump 4 comprises a pump body and an impeller driven to rotate by the second motor, the impeller is installed in the pump body, and the inlet of the pump body is arranged at a position close to the center of the impeller. The impeller is driven to rotate by the motor, which can stir the slurry and the biological enzyme solution while pumping them; a flow guide device is arranged at the inlet of the slurry pump 4, which can guide the biological enzyme solution to enter the pump body at a specific angle to promote mixing with the slurry; since the slurry pump 4 is a prior art, it will not be described in detail here.

[0036] Working principle:

[0037] The two kinds of biological enzymes are pumped into the mixing tank 1 through the first metering pump 201 and the second metering pump 202 according to the ratio determined by accurate experiments and calculations in advance; when the two kinds of biological enzymes enter the mixing tank 1, the stirring assembly arranged in the tank starts to work, and after a period of sufficient stirring, the two kinds of biological enzymes are uniformly mixed in the mixing tank 1 to form a stable compound biological enzyme solution.

[0038] Subsequently, the uniformly mixed compound biological enzyme solution is transported to the next step by the variable frequency metering pump, and the compound biological enzyme solution is pumped to the inlet of the slurry pump 4; when the compound biological enzyme solution reaches the inlet of the slurry pump 4, the strong stirring effect generated by the high-speed rotation of the impeller of the slurry pump 4 is used to make the compound biological enzyme solution and the slurry fully mixed.

[0039] Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge, and in this process, the compound biological enzyme solution and the slurry are fully contacted and uniformly mixed, thereby realizing the purpose of accurately compounding and adding the two biological enzymes to the slurry on line to meet the requirements of the subsequent production process on the mixing effect of the biological enzyme and the slurry.

[0040] In example two, on the basis of example one, the double biological enzyme accurate compounding and mixing adding device further comprises a cleaning system, which can automatically clean before and after the device runs, preventing biological enzyme residue and pipeline blockage.

[0041] The cleaning system is connected with the mixing tank 1, the mixing metering pump 2, the transfer metering pump 3 and the slurry pump 4; in the double biological enzyme accurate compounding and mixing adding device, the cleaning system is a key part to ensure the stable and efficient operation of the device, which plays a role in maintaining the cleanliness of the equipment, preventing biological enzyme residue and pipeline blockage.

[0042] The cleaning system is equipped with a dedicated cleaning liquid storage tank, which stores cleaning liquid specially formulated for the characteristics of biological enzymes, such as containing specific enzyme solvents, surfactants, etc., which can effectively decompose and remove biological enzyme residues. It is connected to each part that needs to be cleaned through pipelines, such as the inlet and outlet pipelines of the electromagnetic pulse metering pump, the internal cavity of the mixing tank 1, the conveying pipeline of the variable frequency metering pump, and the pump body and connecting pipeline of the slurry pump 4, etc.

[0043] The cleaning system has a network of conveying pipelines to ensure that the cleaning liquid can be accurately delivered to every critical part of the device. These pipelines are made of corrosion-resistant and high-pressure materials, such as 316L stainless steel or food-grade plastic, to prevent the cleaning liquid from corroding the pipelines during transportation, while ensuring the sealing of the pipelines to prevent leakage of the cleaning liquid.

[0044] The cleaning system is composed of an automatic control system, various valves and actuators. The control system controls the opening and closing of each valve according to the preset cleaning program, accurately adjusts the flow, pressure and flow direction of the cleaning liquid. For example, when cleaning the electromagnetic pulse metering pump, the control system will control the corresponding valve to make the cleaning liquid enter the pipeline and cavity of the metering pump at a specific flow rate and pressure, ensuring the cleaning effect.

[0045] Before the device starts, the cleaning system automatically starts. First, clean water is pumped through the pipeline to each part to preliminarily flush the device and remove possible dust, impurities, etc. Then, the cleaning liquid flows through the electromagnetic pulse metering pump, the mixing tank 1, the variable frequency metering pump and the pipeline and cavity of the slurry pump 4 in sequence according to the set program. In the mixing tank 1, the stirring device is started at the same time, so that the cleaning liquid is fully circulated in the tank, and the tank wall, stirring paddle 6 and other components are thoroughly cleaned to ensure that there is no biological enzyme residue or other contaminants affecting the subsequent compounding and mixing process. After cleaning, clean water is used for flushing to completely remove the remaining cleaning liquid.

[0046] After the device runs, the cleaning system starts immediately. At this time, high-pressure water is used to preliminarily flush each component to flush away most of the remaining biological enzyme solution. Then, cleaning liquid with a special formula is injected to soak and circulate the pipeline and cavity. For parts that are prone to biological enzyme residues, such as the corners of the mixing tank 1 and the impeller gap of the slurry pump 4, the cleaning system will adjust the flow and pressure of the cleaning liquid for focused cleaning. After soaking for a period of time, clean water is used for flushing again until the discharged water after cleaning meets the specified cleaning standard, ensuring that there is no biological enzyme residue inside the entire device and avoiding contamination of the next production.

[0047] The cleaning system can thoroughly clean the biological enzyme residues by reasonably designing the cleaning liquid formula, accurately controlling the cleaning parameters and combining multiple cleaning methods (such as flushing, soaking, circulating and the like), can thoroughly clean the biological enzyme residues, effectively prevent the pipeline from being blocked, ensure the normal operation of the device and the quality of the biological enzyme recombination and mixing; the regular automatic cleaning can reduce the corrosion and damage of the biological enzyme residues to the equipment, prolong the service life of the electromagnetic pulse metering pump, the mixing tank 1, the variable frequency metering pump and the slurry pump 4 and the like, and reduce the equipment maintenance and replacement costs.

[0048] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0049] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0050] According to the ideal embodiment of the utility model, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A device for precise compounding and mixing of two biological enzymes, characterized in that: The mixing tank (1) for mixing two bio-enzyme solutions, a mixing metering pump (2) connected to the inlet of the mixing tank (1) for pumping the two bio-enzyme solutions into the mixing tank (1), a transfer metering pump (3) connected to the outlet of the mixing tank (1), and an output end of the transfer metering pump (3) connected to a slurry pump (4) for mixing the bio-enzyme solution and slurry.

2. The double-bioenzyme precision compound mixing and adding device according to claim 1, characterized in that: The mixing metering pump (2) comprises a first metering pump (201) and a second metering pump (202) connected to different inlets of the mixing tank (1) respectively.

3. The double-bioenzyme precision compound mixing and adding device according to claim 2, characterized in that: The mixing tank (1) has at least two inlets, and the inlets are higher than the outlet.

4. The double-bioenzyme precision compound mixing and adding device according to claim 3, characterized in that: The mixing tank (1) is provided with a stirring assembly for stirring and mixing the two bio-enzyme solutions, and the mixing tank (1) is provided with a heat preservation layer.

5. The double-bioenzyme precision compound mixing and adding device according to claim 4, characterized in that: The stirring assembly comprises a stirring paddle (6) rotatably installed in the mixing tank (1), and the stirring paddle (6) is connected to an output end of a first motor.

6. The dual bio-enzyme precision compound mixing and adding device according to claim 1, characterized in that: The input end of the transfer metering pump (3) is connected to the outlet of the mixing tank (1) through a pipeline, and the pipeline is provided with a flow regulating valve (5).

7. The dual bio-enzyme precision compound mixing and adding device according to claim 1, characterized in that: The slurry pump (4) comprises a pump body and an impeller driven to rotate by a second motor, the impeller is installed in the pump body, and the inlet of the pump body is arranged at a position close to the center of the impeller.

8. The dual bio-enzyme precision compound mixing and adding device according to claim 1, characterized in that: The cleaning system is connected to the mixing tank (1), the mixing metering pump (2), the transfer metering pump (3), and the slurry pump (4).

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