Circulation hopper mixer with constant-temperature heating function

Abstract

The utility model discloses a constant temperature heating turnover hopper mixer which comprises a rack, an arm shaft, a bearing seat, a driving device and a hopper, one end of the arm shaft is connected with the bearing seat and the driving device, the other end of the arm shaft is detachably and fixedly connected with the hopper, and the mixer further comprises a sliding ring piece, a temperature sensor and a coil pipe, the disc-shaped pipe is wound and fixed on the peripheral surface of the hopper, the disc-shaped pipe is provided with an inlet and an outlet, the slip ring piece is connected with external medium heating and cooling equipment and is connected with the inlet and the outlet through an opening, and a liquid medium or a gas medium is transmitted into the disc-shaped pipe according to a signal value of the temperature sensor. Through the design of the slip ring piece, electric energy and a medium are provided for the coil pipe and the temperature sensor arranged on the hopper, stable operation can be achieved in the rotation state of the hopper, the temperature of materials in the hopper is adjusted and kept through the medium, the process requirements are met, and the material mixing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hopper mixers, and particularly relates to a turnover hopper mixer with constant temperature heating. Background Art

[0002] A hopper mixer is a multi-functional device integrating dispersion, emulsification and mixing, and is widely applicable to industries such as pharmaceuticals, chemicals, and foods. Especially in the pharmaceutical industry, it is mainly used for mixing materials such as solid particles and powders of different components.

[0003] The hopper mixer utilizes the flipping of a (square cone) hopper and the angle of the left and right (or single) arm shafts to cause the material to generate movements such as up and down flipping, magnification and reduction, and left and right doping during the rotation process, so as to achieve the effect of uniform mixing. At the same time, the rotating body (hopper) forms an angle with the axis of rotation, resulting in strong flipping and tangential movement during the mixing process, further promoting the uniform mixing of the material.

[0004] The problems existing in the prior art are as follows: The hopper on the mixer will rotate continuously for a certain period of time according to the process requirements. During the flipping and mixing process of the material, due to factors such as the ambient temperature and the rotation duration, the temperature of the material will change. In the pharmaceutical process, for example, it is necessary to meet the process temperature standard throughout the mixing process to avoid exceeding the process temperature range and affecting the finished product effect.

[0005] As described in the embodiment recorded in Patent CN103520130B:

[0006] Take 20 g of hydroxypropyl cellulose EF, prepare it into a 5% solution with water, then add 25 g of montelukast sodium raw material, stir evenly and set aside; take 337.5 g of mannitol powder and 101.1 g of microcrystalline cellulose, preheat and boil in a fluidized bed for 10 minutes, then spray the above materials, and after spraying, dry until the material temperature reaches 40°C, then add 15 g of cross-linked carboxymethyl cellulose sodium, dry until the material temperature reaches 50 to 55°C, then discharge, and screen and granulate through a 0.6 mm conical sieve; then transfer to a hopper mixer, add 2.5 g of magnesium stearate, and mix at 20 rpm for 5 minutes; use a 5 mm shallow arc round punch to control the tablet weight at 50 mg ± 1 mg, and control the hardness at 15 to 50 N to obtain the immediate release tablet core.

[0007] During the mixing process, maintaining the temperature of the material in the hopper at 50 to 55°C will undoubtedly significantly improve the process stability.

[0008] However, the difficulty in maintaining or adjusting the temperature of the material in the hopper lies in:

[0009] The conventional hopper has a detachable assembly structure with the arm shaft and the frame of the mixer. During the processes of loading and unloading materials into and from the hopper, the hopper needs to be disassembled from the arm shaft and the frame. Such a structure leads to the following problems: temperature control and constant temperature devices need to be installed on the hopper to directly control the temperature of the hopper, and this requires rotation along with the hopper, making it difficult to provide stable energy and medium transportation for the constant temperature and temperature control devices on the hopper. Moreover, installing too many devices on the rotating hopper will also affect the normal operation of the mixer.

[0010] Therefore, it is necessary to design a turnover hopper mixer with constant temperature heating to provide a reliable solution for the constant temperature and temperature control functions of the hopper during rotation. Summary of the Utility Model

[0011] The utility model provides a turnover hopper mixer with constant temperature heating to solve the above technical deficiencies.

[0012] The technical solution of the utility model: A turnover hopper mixer with constant temperature heating, including a frame, an arm shaft, a bearing seat, a driving device and a hopper. One end of the arm shaft is connected to the bearing seat and the driving device, and the other end is detachably and fixedly connected to the hopper. Its characteristics are: The mixer also includes a slip ring part, a temperature sensor, and a coiled tube. The slip ring part is an electro-hydraulic slip ring or an electrical slip ring. The coiled tube is coiled and fixed on the outer peripheral surface of the hopper. The coiled tube is provided with inlets and outlets. The hopper is made of a heat-conducting material. The temperature sensor is arranged on or inside the hopper.

[0013] A hollow groove is coaxially arranged at the end of the arm shaft close to the bearing seat. The hollow groove is provided with an opening penetrating the arm shaft along the radial direction. The slip ring part is arranged in the hollow groove and rotates synchronously with the arm shaft. The slip ring part is connected to an external medium heating and cooling device and is connected to the inlets and outlets through the opening. Liquid medium or gas medium is transmitted into the coiled tube according to the signal value of the temperature sensor.

[0014] Adopting the above technical solution, the electro-hydraulic slip ring or the electrical slip ring integrates the two functions of power transmission and medium (liquid, gas) transmission. Through carefully designed components such as conductive rings, brush wires, seals and flow channels, the requirement of simultaneously transmitting electrical energy and liquid medium during rotation is realized. The brush wires are fixed on the stationary parts, and stable electrical signal transmission is achieved through sliding contact. The electro-hydraulic slip ring or the electrical slip ring is a product of the prior art.

[0015] The present application arranges a disc-shaped tube on the hopper and utilizes the structural characteristics of an electro-hydraulic slip ring or an electrical slip ring to transmit electrical signals, electrical energy, liquid medium or gas medium to the rotating hopper. Therefore, the temperature value on or inside the hopper can be obtained. According to the process requirements, the liquid medium or gas medium is transmitted into the disc-shaped tube to heat up or cool down the hopper. The temperature is transmitted to the material in the hopper through the heat-conducting material of the hopper to adjust the material temperature or keep the material at a constant temperature, so that the hopper mixer always meets the temperature required by the process during the rotation process.

[0016] Moreover, the structural design of the slip ring and the arm shaft enables it to rotate synchronously with the arm shaft, avoiding the problem of pipeline entanglement and providing conditions for energy supply during the rotation of the hopper.

[0017] When the external medium heating and cooling equipment is the plant's shared water equipment or liquid electric heating equipment, an electro-hydraulic slip ring is used. When the external medium heating and cooling equipment is the plant's steam, an electrical slip ring is used.

[0018] The specific operation is as follows: the mixing hopper with the coiled pipe is pushed into the mixing frame, and the hot and cold water are connected to the inlet and outlet of the coiled pipe through the quick connector. The heating device is fed with hot water and the cold water is recycled. The temperature of the incoming hot water is detected and controlled by the system to keep the hopper at a specified constant temperature.

[0019] The utility model is further configured as follows: the disc-shaped pipe is provided with a hot inlet and outlet and a cold inlet and outlet, and the slip ring is provided with a hot runner and a cold runner, which are respectively connected with the hot inlet and outlet and the cold inlet and outlet.

[0020] By adopting the above technical solution, the cold and hot media are respectively input into the disc pipe through the respectively set hot inlet and outlet, cold inlet and outlet, hot runner and cold runner. According to the temperature sensor signal, the material is heated or cooled specifically to accurately control the material temperature during the rotation process.

[0021] A further configuration of the utility model is as follows: an electric heating tube is arranged in the disc-shaped tube, and the electric heating tube is electrically connected to the slip ring.

[0022] By adopting the above technical solution, when the ambient temperature is low and the process needs to maintain a high temperature, and the material does not need a medium to cool it down, an electric heating tube can be set up and the conductive function of the slip ring can be used to generate heat for the hopper to increase the temperature and keep it warm.

[0023] The utility model is further configured as follows: a hose is provided between the hot runner, the cold runner, and the hot inlet and outlet, and the cold inlet and outlet, respectively; the hose is detachably fixedly connected to the hot inlet and outlet, and the cold inlet and outlet.

[0024] Further setting of the present utility model: The hot inlet and outlet, and the cold inlet and outlet are provided with male quick connectors. Hoses are respectively arranged between the hot runner, the cold runner, and the hot inlet and outlet, and the cold inlet and outlet. The hose is provided with a female quick connector.

[0025] With the above technical solution, through the setting of the quick connectors, the hose and the inlet and outlet of the disk-shaped pipe can be quickly disassembled and assembled, which facilitates the separation of the hopper from the mixer, and is convenient for loading and unloading materials. After the hopper is reassembled, it can be quickly connected, improving the operation efficiency.

[0026] Further setting of the present utility model: The disk-shaped pipe spirally winds along the axial direction of the hopper from the top of the hopper to the discharge port, and the hot inlet and outlet, and the cold inlet and outlet are arranged adjacent to each other on the same side.

[0027] Beneficial effects of the present utility model: Through the design of the slip ring member, electric energy and medium are provided for the disk-shaped pipe and the temperature sensor arranged on the hopper, and it can operate stably in the rotating state of the hopper. The medium is used to adjust and maintain the temperature of the materials in the hopper to meet the process requirements, improving the mixing quality of the materials. Description of the Drawings

[0028] Figure 1 is the structure of the embodiment of the present utility model Figure 1 。 Detailed Embodiment

[0029] To make the technical solutions and their advantages of the present application clearer, the technical solutions of the present application will be further described clearly and completely in combination with the drawings. It can be understood that the specific embodiments described herein are only partial embodiments of the present application, which are only used to explain the present application, rather than limiting the present application. It should be noted that for the convenience of description, only the parts related to the present application are shown in the drawings, and other related parts can refer to the usual design. Without conflict, the embodiments and the technical features in the embodiments of the present application can be combined with each other to obtain new embodiments.

[0030] The present utility model will be introduced in detail below with reference to the drawings. As Figure 1 shown, the embodiment of the present device is vertically arranged in the figure. Driven by the first feeding screw, similarly, it can be inclined or horizontally arranged.

[0031] A constant temperature heated turnover hopper mixer comprises a main conveying barrel 1, a first feeding screw 11, and a first driving mechanism 12. The main conveying barrel 1 comprises a starting end and a discharging end 13. The first feeding screw 11 is coaxially arranged in the main conveying barrel 1, and its diameter is adapted to the inner diameter of the main conveying barrel 1. The discharging end 13 is connected to an extruder. A first feeding port 14 for plastic particles to enter is arranged on the side of the main conveying barrel 1 close to the starting end. A second feeding port 15 for film blowing and crushing waste to enter is arranged on the side of the main conveying barrel 1 close to the discharging end 13. The driving mechanism is arranged at the starting end and cooperates with the first feeding screw 11 to drive the first feeding screw 11 to extrude material toward the side of the discharging end 13.

[0032] It also includes a second conveying cylinder 21, a second feeding screw 22 and a second driving mechanism 23. The second conveying cylinder 21 is connected to the second feed port 15. The second conveying cylinder 21 is provided with a third feed port. The second feeding screw 22 is coaxially arranged in the second conveying cylinder 21 and cooperates with the second driving mechanism 23.

[0033] It includes a blower 31 and a feed barrel 32. The feed barrel 32 is a three-way structure, one end of which is connected to the third feed port, and the other end is provided with the blower 31. The body of the feed barrel 32 is provided with a feed fork 33.

[0034] The first and second driving mechanisms 23 include a motor and a reducer.

[0035] The hopper 4 is also included, and the hopper 4 is provided with an inclined pipe 41 connected to the first feed port 14 .

[0036] An observation window 16 is provided on one side of the discharge end 13 of the main conveying cylinder 1 .

[0037] Beneficial effects of the utility model: The design of the device of the present application, by introducing new plastic particles and blown film crushed waste into the extruder respectively, the new plastic particles first enter from the starting end side of the main conveying barrel 1, and are extruded toward the discharge end 13 side by the first conveying screw. In this process, the blown film crushed waste is then introduced into the discharge end 13 side of the main plastic barrel, so that plastic particles first exist in the internal space of the main conveying barrel 1, and the crushed waste is sandwiched among the plastic particles. The limited space, combined with the plastic particles that are continuously extruded, can prevent the crushed waste from flying away from the plastic particle group due to its light weight and small volume, and from being alone in a group, causing the problem of uneven density distribution of the molten material in the extruder.

[0038] In a further configuration, a second conveying cylinder 21 and a second feeding screw 22 are provided at the second feed port 15, and the alternating and balanced mixing of the crushed waste and the plastic particles is further optimized by utilizing the frequency coordination of the second feeding screw 22 and the first feeding screw 11.

[0039] In a further setting, by using the structural design of the blower 31 and the feed cylinder 32, when the shredded waste enters the feed cylinder 32, it is dispersed by the airflow of the blower 31, avoiding the phenomenon of agglomeration, and is introduced into the second conveying cylinder 21. The shredded and separated materials are more conducive to being evenly mixed with the plastic particles.

Claims

1. A thermostatically heated turnover hopper mixer, comprising a frame, an arm shaft, a bearing seat, a driving device and a hopper, wherein one end of the arm shaft is connected to the bearing seat and the driving device, and the other end is detachably fixedly connected to the hopper, characterized in that: The mixer further comprises a slip ring, a temperature sensor, and a disc tube, wherein the slip ring is an electro-hydraulic slip ring or an electrical slip ring, the disc tube is coiled and fixed on the outer peripheral surface of the hopper, the disc tube is provided with an inlet and outlet, the hopper is made of a heat-conducting material, and the temperature sensor is arranged on or in the hopper; A hollow groove is coaxially arranged at the end of the arm shaft near the bearing seat, and an opening penetrating the arm shaft is radially arranged in the hollow groove. The slip ring is arranged in the hollow groove and rotates synchronously with the arm shaft. The slip ring is connected to an external medium heating and cooling device, and is connected to the inlet and outlet through the opening, and transmits liquid medium or gas medium into the disc tube according to the signal value of the temperature sensor.

2. A thermostatically heated turnover hopper mixer according to claim 1, characterized in that: The disc tube is provided with a hot inlet and outlet and a cold inlet and outlet, and the slip ring is provided with a hot runner and a cold runner, which are respectively connected with the hot inlet and outlet and the cold inlet and outlet.

3. A constant temperature heated turnover hopper mixer according to claim 1, characterized in that: An electric heating tube is arranged in the disc tube, and the electric heating tube is electrically connected to the slip ring.

4. A thermostatically heated turnover hopper mixer according to claim 2, characterized in that: A hose is provided between the hot runner, the cold runner, the hot inlet and outlet, and the cold inlet and outlet, respectively. The hose is detachably fixedly connected to the hot inlet and outlet, and the cold inlet and outlet.

5. A thermostatically heated turnover hopper mixer according to claim 4, characterized in that: The hot inlet and outlet ports and the cold inlet and outlet ports are provided with male ends of quick connectors, and hoses are provided between the hot runners, the cold runners, the hot inlet and outlet ports and the cold inlet and outlet ports, respectively, and the hoses are provided with female ends of quick connectors.

6. A thermostatically heated turnover hopper mixer according to claim 5, characterized in that: The disc-shaped pipe is spirally wound along the hopper axial direction from the top of the hopper to the discharge port, and the hot inlet and outlet and the cold inlet and outlet are adjacently arranged on the same side.

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