Raw material pretreatment device for weight gain type thermoplastic elastomer

Abstract

The utility model provides a raw material pretreatment device for a weight gain type thermoplastic elastomer, which comprises a measuring bin, a weighing sensor, a conveying pipe and a first feeding pump, the weighing sensor monitors the weight of oil in the measuring bin in real time, the first feeding pump is controlled to start and stop according to the weight of the oil, and the device is further integrated with a stirring device, an ultrasonic vibration device and a heating device. And oil homogenization is ensured and precipitation is prevented. According to the utility model, materials are automatically and accurately supplemented to the metering bin, so that the accuracy defect caused by temperature change in the traditional volume metering is overcome by mass metering, the accuracy and the stability of a raw material formula are fundamentally ensured, and the product quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to thermoplastic material production equipment technical field, concretely relates to a kind of raw material pretreatment device of weight type thermoplastic elastomer. BACKGROUND

[0002] The production of thermoplastic elastomer such as TPS, TPV usually needs to blend base polymer with filling oil such as paraffin oil, naphthenic oil and other additives in equipment such as internal mixer. In this process, the addition of filling oil is crucial, which is mainly used to adjust the flexibility, processing performance of the final product and optimize production cost, therefore, the accuracy and stability of filling oil addition directly relate to the accuracy of thermoplastic elastomer formula and the consistency of final product quality.

[0003] At present, the quantitative addition of liquid materials such as filling oil in production generally adopts volume-based metering method, for example, through pump or flow meter control. However, the filling oil used in thermoplastic elastomer production usually has high viscosity, and its viscosity is extremely sensitive to temperature change. With the fluctuation of environmental temperature or process temperature, the volume of oil will change significantly, which directly leads to systematic error of volume-based metering method such as metering pump, flow meter, etc. Although the field usually adopts temperature sensor with volume-temperature compensation algorithm to correct the metering deviation caused by temperature change, but this compensation method is limited by oil formula, aging state, impurity content and other factors, and its correction accuracy and stability are still difficult to meet the strict requirements of formula consistency in high-performance thermoplastic elastomer production. This volume change caused by temperature makes it difficult to ensure the accuracy of traditional volume metering method, which eventually leads to the deviation of actual filling oil addition between different batches, causing unstable formula and seriously affecting product quality.

[0004] Especially for high-viscosity filler oils containing solid fillers such as carbon black and inorganic fillers, their extremely high viscosity at room or low temperatures not only leads to high transport resistance but also poses multiple challenges to homogenization during pretreatment. On the one hand, high viscosity severely inhibits the mass transfer efficiency of mechanical stirring, often requiring high-power motors to achieve basic mixing, resulting in high energy consumption and the potential for mixing dead zones. On the other hand, oils are prone to air bubbles during storage and transportation. In high-viscosity environments, these bubbles rise slowly, and conventional stirring can even disperse large bubbles into more difficult-to-remove microbubbles. These bubbles affect metering accuracy and may also cause defects in the final product. Furthermore, while high viscosity can delay filler settling, it also makes it difficult to redisperse and uniformly suspend already settled or agglomerated solid particles, and mechanical stirring alone often has limited effectiveness. Therefore, existing conventional independent stirring or heating methods are insufficient to simultaneously address the homogenization, defoaming, and stable suspension problems faced by high-viscosity filler oils before metering within acceptable energy consumption and time constraints. How to fundamentally achieve economical and efficient pretreatment of such materials while simultaneously ensuring their metering accuracy and material uniformity has become a technical challenge in this field. Utility Model Content

[0005] The purpose of this utility model is to provide a weight-adding thermoplastic elastomer raw material pretreatment device, which replaces the traditional flow meter with a weighing metering bin and integrates multiple pretreatment functions such as heating, stirring and vibration, overcoming the defects of the traditional volume measurement method and ensuring the stability of raw material formulation and product quality.

[0006] To achieve the above objectives, the present invention proposes the following technical solution:

[0007] A pretreatment apparatus for weight-adding thermoplastic elastomers, comprising:

[0008] The metering chamber has at least three support brackets on its outer side wall;

[0009] A fixed frame, wherein the metering chamber is movably connected to the top of the fixed frame via the support bracket;

[0010] Weighing sensors, the number of which corresponds to the number of the support bases, are fixedly installed on the fixed frame and located below the support bases, and are used to bear the weight transmitted from the metering chamber in order to monitor the weight of the oil in the metering chamber in real time.

[0011] As a preferred technical solution of this utility model, the metering chamber is provided with an inlet and an outlet, the bottom of the metering chamber is a convex arc-shaped structure, the outlet is located at the lowest point of the arc-shaped structure, and the inlet is connected to a conveying pipe.

[0012] The other end of the conveying pipe is connected to an oil storage tank, on which a first feeding pump is installed.

[0013] As a preferred technical scheme of the utility model, the utility model also comprises a stirring device.

[0014] The stirring device comprises a driving motor, a stirring shaft and a stirring paddle.

[0015] The driving motor is installed on the top cover of the metering bin, the stirring shaft coincides with the central axis of the metering bin, and the stirring paddle is arranged on the stirring shaft.

[0016] As a preferred technical scheme of the utility model, the utility model also comprises an ultrasonic vibration device.

[0017] The ultrasonic vibration device is installed on the outer side wall of the metering bin and is used for emitting ultrasonic waves to the liquid in the bin.

[0018] As a preferred technical scheme of the utility model, the utility model also comprises a heating device.

[0019] The heating device is integrated on the wall surface of the metering bin and is used for heating the oil in the metering bin.

[0020] As a preferred technical scheme of the utility model, the raw material pretreatment device also comprises a discharging pipe.

[0021] One end of the discharging pipe is connected with the discharge port, and a manual ball valve is arranged on the discharging pipe.

[0022] As a preferred technical scheme of the utility model, one end of the discharging pipe, which is away from the discharge port, is connected with a feeding pipe, a second feeding pump is arranged on the feeding pipe, and the second feeding pump is used for pumping the oil from the metering bin to the next process.

[0023] As a preferred technical scheme of the utility model, a pneumatic ball valve is arranged on the feeding pipe, and the pneumatic ball valve is interlocked with the second feeding pump.

[0024] As a preferred technical scheme of the utility model, a three-way reversing valve is arranged at the outlet end of the feeding pipe, and the three-way reversing valve is used for selectively conveying the oil to the next process.

[0025] As a preferred technical scheme of the utility model, each supporting support is connected with the top of the fixing frame through a ball head articulated support or a flexible connecting piece.

[0026] Each weighing sensor is fixedly installed on the fixing frame and is located directly below the corresponding supporting support.

[0027] As a preferred technical scheme of the utility model, the stirring paddle is an anchor type or spiral type paddle, and the gap between the outer edge of the stirring paddle and the inner wall of the metering bin is 5-10 mm.

[0028] As the preferred technical scheme of the utility model, the heating device is a heating jacket arranged around the wall surface of the metering bin, or is a coil pipe attached to the wall surface of the metering bin.

[0029] As the preferred technical scheme of the utility model, the ultrasonic vibration device comprises a plurality of ultrasonic transducers, and the plurality of ultrasonic transducers are uniformly distributed and fixed on the outer surfaces of the side wall and the bottom of the metering bin.

[0030] From the above technical scheme, the technical scheme of the utility model provides a raw material pretreatment device for weight-increasing thermoplastic elastomer, and compared with the prior art, has the following beneficial effects:

[0031] 1. The weight-increasing metering principle is adopted, the weight of the material is directly measured through the weighing sensor, the metering error caused by the volume change of the oil due to the temperature change is fundamentally eliminated, the accuracy of the formula proportion and the consistency between batches are ensured, and a solid foundation is laid for the stability of the final product quality.

[0032] 2. By integrating the mechanical stirring and the ultrasonic vibration device, dual mixing and dispersion of macro and micro scales are realized, the gel clusters and filler agglomerates can be effectively dispersed, the filler in the high-viscosity oil can be kept in a uniform suspension state for a long time, and the addition proportion imbalance caused by precipitation is avoided.

[0033] 3. The automatic material supplementing and precise material feeding functions are provided, the pump valve is automatically started and stopped according to the weight signal, manual intervention is reduced, the continuous production process is realized, the production interruption caused by material shortage is avoided, and the overall production efficiency is improved.

[0034] 4. The arc-shaped structure design of the bottom of the metering bin makes the discharge complete, reduces the residue and cross contamination, and the design of the three-way reversing valve makes a set of device supply material for multiple internal mixers, improves the equipment utilization rate and the flexibility of the production line layout, and reduces the equipment investment cost.

[0035] 5. The weight metering, heating, stirring, ultrasonic dispersion and other functions are integrated, all pretreatment steps are completed before feeding, it is ensured that each batch of raw material fed into the internal mixer has reached the best process state, and the product quality is guaranteed from the source.

[0036] 6. The low-energy high-efficiency pretreatment for high-viscosity oil is realized. The viscosity of the oil is actively reduced through the heating device, so that the subsequent mechanical stirring and ultrasonic treatment can be efficiently operated at a conventional power, and the problem of ultra-high energy consumption caused by high viscosity is avoided. Heating, stirring and ultrasonic are coordinated, the homogenization and defoaming efficiency are significantly improved, and the overall energy consumption is optimized.

[0037] It should be appreciated that all combinations of the foregoing concepts and additional concepts described in greater detail below (provided such concepts are not mutually inconsistent) are contemplated as being part of the inventive subject matter.

[0038] The foregoing and other aspects, embodiments and features of the present teachings are more fully described below, in connection with the accompanying drawings. Other aspects, embodiments and features of the present teachings will be apparent from the description that follows, and from the claims. BRIEF DESCRIPTION OF DRAWINGS

[0039] The drawings are not drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures is represented with a like numeral for clarity. For purposes of clarity, not every component is called out in every drawing. Embodiments of various aspects of the present teachings will now be described, by way of example only, with reference to the drawings in which:

[0040] Figure 1 The raw material pretreatment device structure schematic view of the weight-increasing thermoplastic elastomer of the embodiment of the present application.

[0041] The meanings of the reference signs represented in the drawings are as follows:

[0042] 1, metering bin; 2, material conveying pipe; 3, first feeding pump; 4, second feeding pump; 5, platform; 6, fixing frame; 7, stirring device; 8, discharging pipe; 9, feeding pipe; 10, manual ball valve; 11, pneumatic ball valve; 12, three-way reversing valve; 13, supporting seat; 14, internal mixer. DETAILED DESCRIPTION

[0043] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meanings understood by those skilled in the art.

[0044] The terms "first", "second", and similar terms used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form "a", "an" or "the" and similar terms do not indicate a quantity limitation, but indicate the existence of at least one. The terms "include" or "contain" and similar terms mean that the elements or objects appearing before "include" or "contain" cover the features, whole, steps, operations, elements and / or components listed after "include" or "contain", and do not exclude the existence or addition of one or more other features, whole, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The utility model provides a kind of raw material pretreatment device of weight gain type thermoplastic elastomer, it is mainly used to add filling oil quantitatively, accurately to thermoplastic elastomer processing equipment such as internal mixer, it can be one or more viscosity / type filling oil, such as at least one of paraffin oil, naphthenic oil.The core of the device is to adopt weight gain type metering principle, and integrate heating, stirring and vibration and multiple pretreatment functions, to overcome the defects of traditional volumetric metering mode, ensure the stability of raw material formula.

[0046] As Figure 1 The utility model discloses a raw material pretreatment device mainly includes metering bin 1, feed pipe 2, first feeding pump 3, second feeding pump 4, platform 5, fixed frame 6, blanking pipe 8, feeding pipe 9, manual ball valve 10, pneumatic ball valve 11 and three-way reversing valve 12. Among them, metering bin 1 is stably installed on a high platform 5 by fixed frame 6, to utilize gravitational potential energy, facilitate the subsequent conveying of material.

[0047] As Figure 1 As shown in the figure, the main body of metering bin 1 is cylindrical structure, which is made of stainless steel 304 and the like, and the inner wall is polished to reduce oil adhesion. Optionally, the capacity of metering bin 1 can be designed according to production demand, ranging from 100 to 500 liters. The top cover of metering bin 1 is provided with a feed inlet, which is connected with a remote oil storage tank (not shown in the figure, such as a large paraffin oil storage tank) through feed pipe 2.

[0048] Preferably, the bottom of metering bin 1 is designed as a convex arc structure, specifically a hemispherical or conical structure, with the lowest point located at the middle of the bottom end and provided with a discharge port connected with blanking pipe 8. This structure is beneficial to the flow of oil to the outlet under the action of gravity, so that the discharge is more thorough, basically without residue, reducing the risk of residue and cross contamination between different batches of oil.

[0049] Specifically, the whole metering bin 1 is arranged on a high-precision weighing sensor. Optionally, the weighing sensor is a strain gauge type sensor, and the number of the weighing sensors is three or four, which are uniformly distributed between the metering bin and the fixed frame to ensure stable support and accurate measurement. The total weight of the oil filled in the metering bin is monitored in real time by the weighing sensor, and the measurement accuracy can reach ±0.1%. The system is preset with a lower weight threshold and a target weight value. When the weighing sensor monitors that the weight of the oil in the bin is lower than the lower threshold, the system will automatically start the first feeding pump, and the valve at the outlet of the oil storage tank can be opened synchronously to supplement the oil from the oil storage tank into the metering bin 1. When the weight reaches the preset target weight value, the pump valve is closed and the feeding is stopped.

[0050] Optionally, the fixed frame 6 is a rigid frame structure, and a horizontal mounting plane is arranged at the top of the fixed frame 6. At least three supporting seats 13 are fixedly connected to the outer side wall of the metering bin 1 in a circumferential direction and are uniformly distributed. Each supporting seat 13 is connected to the mounting plane of the fixed frame 6 through a movable connecting piece. The movable connecting piece is preferably a ball joint support or a flexible connecting piece, and the lower half of the movable connecting piece is connected to the fixed frame 6, and the upper half of the movable connecting piece is connected to the supporting seat 13. Through the connecting mode, when the metering bin 1 is subjected to a weight, a small displacement in the vertical direction can be mainly generated, and the horizontal shaking is effectively limited, so that the stability and accuracy of the weighing are ensured.

[0051] The number of the weighing sensors corresponds to the number of the supporting seats 13. Each weighing sensor is accurately arranged below the corresponding supporting seat 13 and is fixedly installed on the mounting plane of the fixed frame 6. In the initial state, that is, the empty bin, a small gap is kept between the supporting seat 13 and the stress surface of the weighing sensor, or the supporting seat 13 and the stress surface of the weighing sensor are kept in slight contact but not stressed through a pre-tightening mechanism.

[0052] When the oil is added to the metering bin 1, the total weight of the bin body and the oil increases, and the weight is transmitted downward through the supporting seat 13, so as to press the weighing sensor below. The weighing sensor converts the pressure signal sensed into an electric signal and transmits the electric signal to the control system. The control system receives the weight data in real time and compares the weight data with the preset weight threshold, so as to accurately control the start and stop of the first feeding pump 3, and realize automatic and accurate weight-increasing metering.

[0053] The utility model adopts the weight-increasing type instead of the volume metering, and fundamentally eliminates the metering error caused by the change of the viscosity and flowability of the filling oil due to the change of the environmental temperature. The mass is the inherent property of the matter and does not change with the temperature, so that the high consistency of the metering accuracy is ensured. The direct guarantee of the high-precision quantitative addition guarantees the accuracy and stability of the basic formula of the thermoplastic elastomer, and lays a solid foundation for the consistency of the performance of the final product. In addition, the automatic feeding mechanism reduces the manual intervention, realizes the continuity of the production process, improves the production efficiency, and avoids the production interruption caused by the lack of materials.

[0054] The first feeding pump 3 is installed on the material conveying pipe 2, and preferably, the first feeding pump 3 is a gear pump suitable for high-viscosity oil. Alternatively, a plurality of types of oil can share one material conveying pipe 2, and the corresponding oil storage tank is switched when the oil is changed. In combination with the design that a plurality of raw materials share one conveying pipe 2, the complexity of the pipeline and the cleaning requirement are greatly reduced, and the versatility of the equipment for different oil products is improved.

[0055] The control system is electrically connected with the weighing sensor and the first feeding pump 3, and is configured to start the first feeding pump 3 to supplement the filling oil when the weight monitored by the weighing sensor is lower than a preset lower limit threshold, and stop the first feeding pump 3 when the weight reaches a preset target weight.

[0056] The lower discharge pipe 8 is provided with a manual ball valve 10 in a normally open state, which is mainly used for manually closing the pipeline during equipment maintenance to ensure safety. The other end of the lower discharge pipe 8 is connected to the feeding pipe 9, and the feeding pipe 9 is sequentially provided with a pneumatic ball valve 11 and a second feeding pump 4. The end of the feeding pipe 9 is connected to a three-way reversing valve 12, and the two outlets of the three-way reversing valve 12 are respectively connected to two internal mixers 14. Preferably, the second feeding pump 4 is a gear pump suitable for high-viscosity oil, like the first feeding pump 3.

[0057] The pneumatic ball valve 11 starts quickly and is interlocked with the second feeding pump 4 to ensure accurate start and stop of the feeding process. The design of the three-way reversing valve 12 enables a set of pretreatment devices to flexibly supply two or more internal mixers 14, improves the utilization rate of the equipment and the layout flexibility of the production line, and reduces the investment cost of the equipment.

[0058] When it is necessary to feed the internal mixer 14, the control system opens the pneumatic ball valve 11 according to a preset program and starts the second feeding pump 4. Under the combined action of the pumping pressure and the gravity, the accurately metered oil is pumped out through the feeding pipe 9. By controlling the conduction direction of the three-way reversing valve 12, the oil can be flexibly delivered to the specified internal mixer 14.

[0059] In order to ensure that the filling oil, especially the oil containing fillers, maintains a uniform suspended state before addition and prevents sedimentation, a plurality of pretreatment devices are integrated inside and outside the metering bin 1, including a stirring device 7, an ultrasonic vibration device and a heating device.

[0060] Specifically, the stirring device 7 is installed inside the metering bin 1, which mainly includes a driving motor, a stirring shaft and stirring blades. The driving motor is installed on the top cover of the metering bin 1 through a motor base. The driving motor can be a variable frequency motor, allowing the stirring speed to be adjusted within the range of 0-100 rpm. The motor output shaft is connected to the stirring shaft through a shaft coupling. The stirring shaft coincides with the central axis of the metering bin 1, and the stirring blades are arranged on the stirring shaft. Optionally, the stirring blades are anchor type or spiral type, with a gap of 5-10 mm between the outer edge of the stirring blades and the inner wall of the metering bin 1 to ensure effective mixing and prevent dead zones. Through the rotation of the stirring blades, forced convection and shearing action are generated, which not only realizes macroscopic homogeneity and breaks up the possible gel or filler agglomerates, but also promotes the collision, merging and accelerated floating of the gas bubbles entrained in the oil, thereby assisting in the escape of gas bubbles and reducing the measurement error and product defects caused by gas bubble retention.

[0061] The stirring device 7 of the utility model adopts a central axis symmetrical design. The stirring shaft coincides with the central axis of the metering bin 1, and the stirring blades move at a uniform speed in a circular motion. The centrifugal force generated is perpendicular to the direction of the gravity sensed by the weighing sensor. Therefore, during the steady-state stirring process, no additional periodic force is introduced in the vertical direction, which does not substantially interfere with the stable measurement of the weighing sensor, ensuring the real-time and accuracy of the metering process.

[0062] Specifically, the ultrasonic vibration device is installed on the outer side wall of the metering bin 1, avoiding the support seat 13, and is used to generate ultrasonic waves to the liquid in the bin. The ultrasonic vibration device includes multiple piezoelectric ultrasonic transducers, which are installed on the side wall and the bottom of the metering bin 1 through mechanical fixing methods such as bolt connection. Silicon-based coupling agent is used between the ultrasonic transducers and the bin wall to ensure effective transmission of ultrasonic waves. The frequency of the ultrasonic transducers is 20-40 kHz, the power is 500-2000 W, and the number is 4-6, which are evenly distributed to generate a uniform ultrasonic field. The ultrasonic vibration device utilizes the cavitation effect of ultrasonic waves in the liquid to form a microcosmic violent shock wave and a high-speed microjet, which not only effectively disperses fine particles and realizes uniform dispersion at a microscale, but also makes the micro-bubbles in the oil vibrate, break and merge into large bubbles, thereby significantly accelerating the bubble removal process and further improving the material uniformity and metering accuracy.

[0063] The combination of stirring and ultrasonic vibration ensures that the filler can remain uniformly suspended in the oil with high viscosity for a long time, avoiding the addition of the proportion due to precipitation. The combination of mechanical stirring and cavitation effect of ultrasonic waves realizes dual mixing at macro and micro levels, with a mixing effect far superior to single means, ensuring the uniformity of the oil system. The pretreatment is directly completed in the metering bin 1, ensuring that the oil fed into the internal mixer each time is homogenized in composition, thereby ensuring the product quality from the source.

[0064] Specifically, the heating device is integrated in the form of a heating jacket or a coil on the wall of the metering bin 1. Alternatively, the heating jacket is arranged around the wall of the metering bin 1, into which circulating hot oil is introduced, or the coil is attached to the wall of the metering bin 1 and integrated with an electric heating element for heating the oil, with the temperature control range being from room temperature to 100 DEG C. The heating device is connected with a temperature sensor and a control system to realize accurate temperature control and actively increase the temperature of the oil, thereby reducing the viscosity of the oil. This is not only beneficial to subsequent conveying, but also creates favorable conditions for stirring and ultrasonic vibration. The main purpose of the heating device of the utility model is to actively adjust the temperature of the oil, thereby reducing the viscosity of the oil and improving the flowability, to create conditions for subsequent accurate pumping and homogenization treatment. This is essentially different from the heating in the traditional mixing reaction device for promoting chemical reaction or changing reaction selectivity. The heating of the utility model serves as a pre-process step for metering accuracy and material conveying.

[0065] During the process, according to the process requirement, the heating, stirring and ultrasonic vibration devices are started to warm, homogenize and prevent the oil in the bin from precipitating. When the internal mixer 14 needs to be fed, the control system controls the second feeding pump 4 and the pneumatic ball valve 11, and guides the three-way reversing valve 12 to the target internal mixer 14 to convey the filling oil that has been accurately metered and fully pretreated into the internal mixer 14 for mixing. The whole process has high automation degree, accurate metering and sufficient pretreatment, and significantly improves the production quality and efficiency of the thermoplastic elastomer.

[0066] In the utility model, the heating device, the stirring device 7 and the ultrasonic vibration device are not simply superimposed as independent systems, but are designed in a systematic manner for the filling oil system with high viscosity and easy precipitation to realize the triple synergistic effect of viscosity adjustment, macro-mixing and micro-dispersion. The three devices complement each other and jointly constitute an efficient pretreatment unit.

[0067] The viscosity of the filling oil is actively and controllably reduced by the heating device, and the temperature of the oil is increased to an appropriate range, so that the viscosity of the oil is significantly reduced. This change brings two fundamental benefits: first, it creates feasible conditions for mechanical stirring. After the viscosity is reduced, the stirring resistance is greatly reduced, so that an electric motor with conventional power can realize effective macro-stirring of the oil, avoiding the problems of energy consumption and equipment cost caused by using an oversized power motor to overcome high viscosity. Second, it provides kinetic advantages for bubble escape and filler dispersion. Reducing the viscosity directly increases the upward speed of the bubbles in the oil, and also makes the filler particles more easily dispersed under the action of shear force.

[0068] On the basis of heating viscosity reduction, mechanical stirring can achieve overall convection of oil with lower energy consumption, eliminate temperature gradient and concentration gradient, and disperse large condensation groups. Pure heating or stirring has limited effect on micron-sized agglomerates and internal wrapped bubbles. At this time, the role of ultrasonic vibration device is crucial. Ultrasonic waves can be more effectively propagated in the oil after viscosity reduction, and the cavitation effect generated by ultrasonic waves forms strong local microjet and shock wave, which can effectively depolymerize fine filler agglomerates and promote microbubble merging, growing and escaping.

[0069] For the high-viscosity filled oil system processed by the utility model, if the heating link is missing, only stirring and ultrasonic treatment at room temperature will face great difficulties: stirring efficiency is low, energy consumption increases dramatically, and overall homogenization is difficult to achieve; Ultrasonic waves attenuate significantly in high-viscosity medium, effective range and working efficiency are greatly reduced, cavitation effect is weakened, and deaeration and micro-dispersion effect are poor.

[0070] On the contrary, if there is only heating without stirring and ultrasonic, only the fluidity can be improved, and the uniform suspension of fillers and bubble removal cannot be actively and forcibly achieved, and the material uniformity cannot be guaranteed. The utility model creates an efficient working physical environment for stirring and ultrasonic by heating to reduce viscosity. Stirring realizes macro-homogeneity, and ultrasonic is responsible for micro-dispersion and deaeration. The three are closely linked and work together to solve the problems of homogenization, deaeration and stabilization of high-viscosity filled oil during accurate metering.

[0071] Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Those skilled in the art without departing from the spirit and scope of the utility model can make various changes and decorations. Therefore, the protection scope of the utility model shall be subject to the definition of the claims.

Claims

1. A pretreatment device for weight-adding thermoplastic elastomer raw materials, characterized in that, The utility model relates to a kind of oil material metering device, including: Metering bin (1), its outer side wall is equipped with at least three support supports (13); Fixed frame (6), the metering bin (1) is movably connected to the top of the fixed frame (6) by the support support (13); Weighing sensor, the number corresponding with the support support (13) is fixedly arranged on the fixed frame (6) and is located below the support support (13), for bearing the weight transferred by the metering bin (1), to monitor the oil material weight in the metering bin (1) in real time; Stirring device (7), the stirring device (7) includes driving motor, stirring shaft and stirring paddle; The driving motor is installed on the top cover of the metering bin (1), the stirring shaft coincides with the central axis of the metering bin (1), and the stirring paddle is arranged on the stirring shaft; Ultrasonic vibration device, the ultrasonic vibration device is installed on the outer side wall of the metering bin (1), for emitting ultrasonic wave to liquid in metering bin (1); Heating device, the heating device is integrated on the wall of the metering bin (1), for heating oil material in the metering bin (1).

2. The weight added thermoplastic elastomer raw material pretreatment device according to claim 1, characterized in that, The metering bin (1) is equipped with inlet and outlet, the bottom of the metering bin (1) is the convex arc structure, the outlet is located at the lowest point of the arc structure, and the inlet is connected with a feeding pipe (2); The other end of the feeding pipe (2) is connected with oil storage tank, and a first feeding pump (3) is arranged on the feeding pipe (2).

3. The weight added thermoplastic elastomer raw material pretreatment device according to claim 2, characterized in that, The raw material pretreatment device further includes a discharging pipe (8). One end of the discharging pipe (8) is connected with the outlet, and a manual ball valve (10) is arranged on the discharging pipe (8).

4. The weight added thermoplastic elastomer raw material pretreatment device according to claim 3, characterized in that, The other end of the discharging pipe (8) is connected with a feeding pipe (9), and a second feeding pump (4) is arranged on the feeding pipe (9), for pumping oil material from the metering bin (1) to the next process.

5. The weight added thermoplastic elastomer raw material pretreatment device according to claim 4, characterized in that, A pneumatic ball valve (11) is arranged on the feeding pipe (9), and the pneumatic ball valve (11) is interlocked with the second feeding pump (4).

6. The weight added thermoplastic elastomer raw material pretreatment device according to claim 4, characterized in that, A three-way reversing valve (12) is arranged at the outlet end of the feeding pipe (9), for selectively conveying oil material to the next process.

7. The weight added thermoplastic elastomer raw material pretreatment device according to claim 1, characterized in that, Each support support (13) is connected with the top of the fixed frame (6) through a ball head articulated support or a flexible connecting piece. Each weighing sensor is fixedly installed on the fixed frame (6) and located directly below the corresponding support support (13).

8. The weight added thermoplastic elastomer raw material pretreatment device according to claim 1, characterized in that, The stirring paddle is an anchor type or a spiral type paddle, and the gap between the outer edge of the stirring paddle and the inner wall of the metering bin (1) is 5-10 mm.

9. The weight added thermoplastic elastomer raw material pretreatment device according to claim 1, characterized in that, The heating device is a heating jacket arranged around the wall of the metering bin (1), or a coil attached to the wall of the metering bin (1).

10. The weight added thermoplastic elastomer raw material pretreatment device according to claim 1, characterized in that, The ultrasonic vibration device includes a plurality of ultrasonic transducers, and the plurality of ultrasonic transducers are uniformly distributed and fixed on the outer surfaces of the side wall and the bottom of the metering bin (1).

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