PVC (polyvinyl chloride) cold and hot blending mixer

Abstract

The utility model discloses a PVC (polyvinyl chloride) cold and hot blending mixer which comprises a base, a hot mixing bin and a cold mixing bin are arranged above the base, a discharge port of the hot mixing bin is communicated with a feed port of the cold mixing bin through a connecting pipe, and control valves are arranged at the discharge port of the hot mixing bin and the feed port of the cold mixing bin and used for opening or closing the connecting pipe; the outer side of the hot mixing bin is provided with a first cooling assembly used for cooling materials in the hot mixing bin, the design structure is reasonable, the spiral first cold water pipe is arranged outside the hot mixing bin, and the first thermocouple is arranged in the hot mixing bin, so that after a coupling agent and calcium carbonate are mixed in the hot mixing bin, the materials are rapidly cooled; the problems that an existing integrated mixing machine can only conduct natural cooling after premixing or conduct blending on PVC pipe raw materials and other auxiliaries, and the mixing efficiency and performance of the PVC pipe raw materials are affected are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of cold and hot mixing machines, specifically a PVC cold and hot mixing machine. Background Technology

[0002] Hot and cold mixing machines are widely used in chemical, light industry, pharmaceutical, and food industries. They are mainly used to add raw materials into the device and regulate the temperature inside the device to a set level. At the same time, they control the agitator inside the device to mix the materials under a set stable temperature so that the materials reach the ideal state.

[0003] Chinese utility model patent CN210584668U discloses a hot and cold integrated mixing machine. This machine has a hot mixing chamber and a cold mixing chamber in its upper and lower parts. The materials are first mixed in the hot mixing chamber, and then directly enter the cold mixing chamber, achieving a hot and cold mixing process. However, in PVC pipe processing, to improve the mechanical properties of PVC pipes, coupling agents are often added to improve calcium carbonate and prepare active calcium carbonate. During preparation, calcium carbonate and coupling agents need to be premixed to ensure uniform contact before mixing with other additives. Because calcium carbonate easily agglomerates at high temperatures, this device can only premix and then allow it to cool naturally before adding other additives, or mix the two together with other additives. The former results in a longer mixing time, while the latter leads to poor performance of the formed pipe. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a PVC cold and hot mixing machine.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A PVC hot and cold mixing mixer includes a base, a hot mixing chamber and a cold mixing chamber are arranged on the top of the base, the outlet of the hot mixing chamber is connected to the inlet of the cold mixing chamber through a connecting pipe, and a control valve is provided at the outlet of the hot mixing chamber and the inlet of the cold mixing chamber for opening or closing the connecting pipe.

[0007] The outside of the hot mixing chamber is equipped with a first cooling component for cooling the materials inside the hot mixing chamber;

[0008] The first cooling component includes several first thermocouples and a set of first cold water pipes;

[0009] Several first thermocouples are installed on the hot mixing chamber, and the temperature measuring end of the first thermocouple is located inside the hot mixing chamber, for detecting the temperature of the material inside the hot mixing chamber;

[0010] The first cold water pipe has a spiral structure and is detachably sleeved onto the outer wall of the hot mixing chamber. The cooling medium flows through the first cold water pipe to cool the material in the hot mixing chamber.

[0011] Furthermore, the hot mixing chamber is equipped with a stirring mechanism to uniformly mix the materials inside.

[0012] Furthermore, a storage bin is also provided on the base. The outlet of the storage bin is connected to the inlet of the hot mixing chamber. A movable baffle is provided at the connection between the storage bin and the hot mixing chamber for opening / closing the connection between the storage bin and the hot mixing chamber.

[0013] Furthermore, the interior of the cold mixing chamber is equipped with a rotatable second mixing rack for mixing the materials inside the cold mixing chamber;

[0014] The cold mixing chamber is equipped with a connector on its exterior, and a third drive component is connected to the connector to drive the cold mixing chamber to shake.

[0015] A second cooling component is also installed on the outside of the cold mixing chamber, which is used to cool the materials inside the cold mixing chamber.

[0016] Furthermore, the connector is fixedly connected to the middle of the cold mixing chamber;

[0017] The third drive assembly includes a gear ring, the inner side of which is connected to the connector, and the outer teeth of the gear ring are meshed with a gear. The gear is installed at the output end of the first drive structure and connected to the bottom of the first drive structure, which is mounted on the base to drive the connector to rotate and cause the cold mixing chamber to rotate and sway around its own axis.

[0018] Furthermore, there are two connectors, symmetrically arranged on the outside of the cold mixing chamber;

[0019] The third drive component includes a track frame and a second drive structure. The bottom of the track frame is mounted on the base, and one side of the track frame is slidably connected to one of the connecting parts.

[0020] The bottom of the second drive structure is mounted on the base. The output end of the second drive structure is connected to another connector, and the axis of the output shaft of the second drive structure is parallel to the axis of the cold mixing chamber. During movement, the cold mixing chamber is driven to rotate and sway up and down around the axis of the output shaft of the second drive structure by the drive connector of the second drive structure.

[0021] Furthermore, there are two connectors, and both connectors have circular cross-sections. The ends of the two connectors that are close to each other are symmetrically fixed to both sides of the cold mixing chamber.

[0022] The third drive assembly includes a support frame, the bottom of which is mounted on a base. The support frame is rotatably connected to the outside of a connector. One end of one connector is provided with an output shaft of the third drive structure, and the axis of the output shaft of the third drive structure is collinear with the axis of the connector. During movement, the third drive structure drives the connector to rotate and sway the cold mixing chamber up and down around the axis of the connector at least one end of its own axis.

[0023] Furthermore, the outside of the cold mixing chamber is fitted with a heat-insulating protective shell;

[0024] The second cooling component includes a spiral second cold water pipe and several second thermocouples. The second cold water pipe is located between the thermal insulation protective shell and the cold mixing chamber.

[0025] Several second thermocouples are respectively installed above and below the inside of the cold mixing chamber.

[0026] Furthermore, a connecting sleeve is fitted on the outer side of the second mixing rack. One end of the connecting sleeve penetrates one side of the cold mixing chamber, and a connecting component is connected to the end of the connecting sleeve away from the cold mixing chamber. One side of the connecting component is connected to one end of the mixing rack.

[0027] The connecting sleeve is fixedly connected to a third stirring frame at one end inside the cold mixing chamber. The stirring part of the third stirring frame has several chambers. A second thermocouple is installed in each chamber. A temperature guide rod is also installed on the third stirring frame. One end of the temperature guide rod is located on the outside of the third stirring frame and contacts the inside of the cold mixing chamber. The other end of the temperature guide rod extends through the chamber and contacts the temperature measuring end of the second thermocouple.

[0028] Compared with existing technologies, this PVC hot and cold blending mixer has the following advantages:

[0029] I. This utility model solves the problem that existing integrated mixers can only be premixed and then naturally cooled or mixed with other additives, which affects the mixing efficiency and performance of PVC pipe raw materials.

[0030] Second, this utility model separates the hot mixing chamber and the storage tank by setting a storage tank at the inlet of the hot mixing chamber and setting a baffle at the connection. Furthermore, the hot mixing chamber is connected to the cold mixing chamber through a connecting pipe at the outlet of the hot mixing chamber, so that the material can be directly put into the cold mixing chamber after the hot mixing is completed. This allows the cold mixing chamber, the hot mixing chamber and the storage tank to work continuously, thereby improving the overall mixing efficiency and reducing costs. Attached Figure Description

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the first cold water pipe in this utility model;

[0033] Figure 3 This is a cross-sectional view of the heat mixing chamber in this utility model;

[0034] Figure 4 This is a cross-sectional view of the intermediate cooling mixing chamber of this utility model;

[0035] Figure 5 This is a cross-sectional view of the thermal insulation protective shell of this utility model.

[0036] In the diagram: 1. Hot mixing chamber; 2. Storage tank; 3. First cold water pipe; 4. First mixing rack; 5. First thermocouple; 6. Connecting pipe; 7. Cold mixing chamber; 8. Second mixing rack; 9. Second thermocouple; 10. Water inlet pipe; 11. Water outlet pipe; 12. Connector; 13. Discharge pipe; 14. Thermal insulation protective shell; 15. Connecting sleeve; 16. Connecting assembly; 17. Third mixing rack; 18. Base; 19. Second cold water pipe. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] like Figure 1-5As shown, this utility model provides a technical solution: a PVC hot and cold mixing mixer, including a base 18, with a hot mixing chamber 1 and a cold mixing chamber 7 arranged above the base 18. The outlet of the hot mixing chamber 1 and the inlet of the cold mixing chamber 7 are connected by a connecting pipe 6, and control valves are provided at both the outlet of the hot mixing chamber 1 and the inlet of the cold mixing chamber 7 for opening or closing the connecting pipe 6. A first cooling component is arranged on the outside of the hot mixing chamber 1 for cooling the material inside the hot mixing chamber 1. The first cooling component includes several first thermocouples 5 and a set of first cold water pipes 3. Several first thermocouples 5 are installed on the hot mixing chamber 1, and the temperature measuring end of the first thermocouples 5 is located inside the hot mixing chamber 1 for detecting the temperature of the material inside the hot mixing chamber 1. The first cold water pipe 3 has a spiral structure and is detachably sleeved and connected to the outer wall of the hot mixing chamber 1. A cooling medium flows through the first cold water pipe 3 to cool the hot mixing chamber 1. The material inside chamber 1 is cooled. During use, the first cold water pipe 3 is detachably connected to the outside of the hot mixing chamber 1 via pipe clamps. The first cold water pipe 3 is a copper-based spiral water-cooled pipe with the inlet end located at the bottom and the outlet end located at the top. It is set outside the hot mixing chamber 1 and connected to the external cold water circulation equipment at the inlet and outlet. Calcium carbonate and coupling agent are added to the hot mixing chamber 1 and stirred. The calcium carbonate and friction generate heat to heat the two together, allowing the coupling agent to coat the calcium carbonate. Then, the control switch on the first cold water pipe 3 is turned on, allowing cold water to enter from the bottom of the first cold water pipe 3 and flow upward along the first cold water pipe 3. It then flows back to the water circulation equipment at the top, accelerating the cooling of the hot mixing chamber 1 and thus cooling the material inside. At the same time, the temperature of the material inside is monitored in real time by the first thermocouple 5. After cooling to an appropriate temperature, the water circulation is turned off, and other additives are added for hot mixing again.

[0039] The hot mixing chamber 1 is equipped with a first stirring frame 4, and the top or bottom of the first stirring frame 4 is equipped with a first driving component for driving the first stirring frame 4 to uniformly mix the materials in the hot mixing chamber 1. In use, the first driving component can be a positive and negative electric motor, which drives the first stirring frame 4 to rotate in the hot mixing chamber 1, and the stirring of the material achieves hot mixing.

[0040] The base 18 is also equipped with a storage tank 2. The outlet of the storage tank 2 is connected to the inlet of the hot mixing chamber 1. A movable baffle is provided at the connection between the storage tank 2 and the hot mixing chamber 1 to open / close the connection. In use, the operator first adds the material to the storage tank 2. Then, the baffle is driven by a telescopic push rod or manual transmission mechanism to open the channel between the two, allowing the material to enter the hot mixing chamber 1 for hot mixing. During the hot mixing process, the baffle closes the channel, and any other materials to be added are put back into the storage tank 2. This allows the material to be added directly to the hot mixing chamber 1 next time, reducing the time required for material addition and improving work efficiency. After the material in the hot mixing chamber 1 is hot mixed, the connecting pipe 6 is opened to allow the material to directly enter the cold mixing chamber 7, further reducing the material transfer time and improving the overall work efficiency of the equipment.

[0041] The cold mixing chamber 7 is equipped with a rotatable second stirring frame 8 for stirring the materials inside the cold mixing chamber 7. A connecting piece 12 is provided on the outside of the cold mixing chamber 7, and a third drive assembly is connected to the connecting piece 12 for driving the cold mixing chamber 7 to shake. A second cooling assembly is also provided on the outside of the cold mixing chamber 7 for cooling the materials inside. In use, the second stirring frame 8 adopts a star-shaped stirring frame, and a second drive assembly is provided at one end. The second drive assembly can be a forward and reverse motor, installed on the outside of the cold mixing chamber 7 via a mounting base. The motor drives the second stirring frame 8 to rotate, causing the second stirring frame 8 to stir the materials inside the cold mixing chamber 7. Simultaneously, the third drive assembly and connecting piece 12 connect to drive the cold mixing chamber 7 to shake up and down by 45 degrees, improving the mixing effect and achieving cold mixing. A discharge pipe 13 is provided on one side of the cold mixing chamber 7, and a lifting device is installed inside the discharge pipe 13 to assist in material discharge.

[0042] The connector 12 is fixedly connected to the middle of the cold mixing chamber 7; the third drive assembly includes a gear ring, the inner side of which is connected to the connector 12, and the outer teeth of the gear ring are meshed with a gear. The gear is installed at the output end of the first drive structure and connected to the bottom of the first drive structure, which is mounted on the base 18 to drive the connector 12 to rotate and cause the cold mixing chamber 7 to rotate and sway around its own axis. In use, the first drive structure housing adopts a forward and reverse motor. The motor is mounted on the base 18 through a bracket. The motor drives the gear to rotate, which in turn drives the gear ring to rotate. The gear ring drives the connector 12 to rotate, which in turn drives the cold mixing chamber 7. Then, the rotation direction of the motor is changed so that the motor drives the gear to rotate in the opposite direction, which in turn drives the cold mixing chamber 7 to rotate in the opposite direction, causing the cold mixing chamber 7 to sway around its own axis and improve the mixing effect.

[0043] There are two connectors 12, symmetrically arranged on the outside of the cold mixing chamber 7. The third drive assembly includes a track frame and a second drive structure (not shown in the figure). The bottom of the track frame is mounted on the base 18, and one side of the track frame is slidably connected to one of the connectors 12. The bottom of the second drive structure is mounted on the base 18, and the output end of the second drive structure is connected to the other connector 12. The output shaft axis of the second drive structure is parallel to the axis of the cold mixing chamber 7. During movement, the second drive structure drives the connector 12 to cause the cold mixing chamber 7 to rotate and sway up and down around the axis of the output shaft of the second drive structure. In use, the second drive structure adopts a forward and reverse motor. The output end of the motor passes through the end of one of the connectors 12 and is fixedly connected to the connector 12, so that the connector 12 rotates up and down around the axis of the motor output shaft, thereby causing the motor to drive one of the connectors 12 to rotate. Then, the connector 12 further drives the cold mixing chamber 7 to rotate up or down around the connection between the connector 12 and the motor. At the same time, the other connector 12 is slidably connected in the track frame, and the track frame is adapted to the trajectory of the up and down rotation of the connector 12, thereby causing the cold mixing chamber 7 to rotate and sway.

[0044] There are two connectors 12, and both connectors 12 have circular cross-sections. The ends of the two connectors 12 that are close to each other are symmetrically fixed to both sides of the cold mixing chamber 7. The third drive assembly includes a support frame (not shown in the figure). The bottom of the support frame is set on the base 18. The support frame is rotatably connected to the outside of the connector 12. One end of one of the connectors 12 is provided with the output shaft of the third drive structure. The axis of the output shaft of the third drive structure is collinear with the axis of the connector 12. During movement, the third drive structure drives the connector 12 to cause the cold mixing chamber 7 to rotate and sway up and down around the axis of the connector 12 at least one end of its own axis. In use, the third drive structure adopts a forward and reverse motor. The bottom of the motor is mounted on the base 18. The motor drives the connector 12 to rotate around its own axis, thereby causing the cold mixing chamber 7 to rotate around the connector 12, realizing the up and down swaying of both ends of the cold mixing chamber 7 to assist in material mixing.

[0045] The cold mixing chamber 7 is fitted with a heat-insulating protective shell 14 on its outer side; the second cooling component includes a spiral second cold water pipe 19 and several second thermocouples 9. The second cold water pipe 19 is located between the heat-insulating protective shell 14 and the cold mixing chamber 7; the several second thermocouples 9 are respectively located above and below the inner side of the cold mixing chamber 7; during use, the internal temperature is detected by the second thermocouples 9 so that the staff can adjust the temperature; the two ends of the second cold water pipe 19 have an inlet pipe 10 and an outlet pipe 11, and the inlet pipe 10 and the outlet pipe 11 respectively pass through the outside of the heat-insulating protective shell 14 and are connected to the water circulation equipment, so that the water flows in along the counterclockwise spiral second cold water pipe 19 and flows out at the outlet pipe 11, so that the cooling medium passes through the second cold water pipe 19 to quickly cool the material inside the cold mixing chamber 7.

[0046] The outer side of the second mixing rack 8 is fitted with a connecting sleeve 15. One end of the connecting sleeve 15 passes through one side of the cold mixing chamber 7. The end of the connecting sleeve 15 away from the cold mixing chamber 7 is connected to a connecting component 16. One side of the connecting component 16 is connected to one end of the mixing rack 8.

[0047] A third stirring frame 17 is fixedly connected to one end of the connecting sleeve 15 inside the cold mixing chamber 7. The stirring section of the third stirring frame 17 has several chambers, each containing a second thermocouple 9. A temperature-conducting rod is also mounted on the third stirring frame 17; one end of the rod is located outside the third stirring frame 17 and contacts the inside of the cold mixing chamber 7, while the other end extends through the chamber and contacts the temperature-sensing end of the second thermocouple 9. In use, the connecting assembly 16 includes three bevel gears, which are sequentially meshed. One bevel gear is fixedly connected to one end of the connecting sleeve 15, and the other bevel gear… The wheel is fixedly connected to one end of the second stirring frame 8. The bevel gear in the middle is connected to the heat insulation protective shell 14 or the cold mixing chamber 7 through the support rod, which plays a supporting role. The second stirring frame 8 drives the corresponding bevel gear to rotate, so that the bevel gear drives the bevel gear on the connecting sleeve 15 to rotate through the bevel gear in the middle, realizing the forward and reverse rotation between the second stirring frame 8 and the third stirring frame 17. While the third stirring frame 17 further assists in stirring, it drives the second thermocouple 9 to rotate. Compared with the first type of second thermocouple 9 fixed on the cold mixing chamber 7, it reduces the blind spot for temperature detection in the cold mixing chamber 7.

Claims

1. A PVC hot and cold mixing mixer, comprising a base (18), wherein a hot mixing chamber (1) and a cold mixing chamber (7) are provided above the base (18), wherein the outlet of the hot mixing chamber (1) is connected to the inlet of the cold mixing chamber (7) via a connecting pipe (6), and both the outlet of the hot mixing chamber (1) and the inlet of the cold mixing chamber (7) are provided with control valves for opening or closing the connecting pipe (6); Its features are: A first cooling component is provided on the outside of the hot mixing chamber (1) for cooling the material inside the hot mixing chamber (1); The first cooling component includes several first thermocouples (5) and a set of first cold water pipes (3); A plurality of first thermocouples (5) are installed on the heat mixing chamber (1), and the temperature measuring end of the first thermocouple (5) is located inside the heat mixing chamber (1) for detecting the temperature of the material inside the heat mixing chamber (1); The first cold water pipe (3) has a spiral structure and is detachably sleeved on the outer wall of the hot mixing chamber (1). The material in the hot mixing chamber (1) is cooled by the cooling medium flowing through the first cold water pipe (3).

2. The PVC hot and cold blending mixer according to claim 1, characterized in that: The hot mixing chamber (1) is equipped with a stirring mechanism for uniformly mixing the materials inside the hot mixing chamber (1).

3. The PVC hot and cold blending mixer according to claim 1, characterized in that: The base (18) is also provided with a storage tank (2), the outlet of the storage tank (2) is connected to the inlet of the hot mixing chamber (1), and a movable baffle is provided at the connection between the storage tank (2) and the hot mixing chamber (1) for opening / closing the connection between the storage tank (2) and the hot mixing chamber (1).

4. The PVC hot and cold blending mixer according to claim 1, characterized in that: The cold mixing chamber (7) is equipped with a rotatable second stirring rack (8) for stirring the materials in the cold mixing chamber (7); The cold mixing chamber (7) is provided with a connector (12) on its exterior. A third drive component is connected to the connector (12) for driving the cold mixing chamber (7) to shake. The cold mixing chamber (7) is also provided with a second cooling component on its exterior, which is used to cool the material inside the cold mixing chamber (7).

5. The PVC hot and cold blending mixer according to claim 4, characterized in that: The connector (12) is fixedly connected to the middle part of the cold mixing chamber (7); The third drive assembly includes a gear ring, the inner side of which is connected to the connector (12), and the outer teeth of the gear ring are meshed with a gear. The gear is installed at the output end of the first drive structure and the bottom of the first drive structure is installed on the base (18) to drive the connector (12) to rotate and cause the cold mixing chamber (7) to rotate and sway around its own axis.

6. The PVC hot and cold blending mixer according to claim 4, characterized in that: There are two connectors (12), which are symmetrically arranged on the outside of the cold mixing chamber (7); The third drive assembly includes a track frame and a second drive structure. The bottom of the track frame is mounted on the base (18), and one side of the track frame is slidably connected to one of the connectors (12). The bottom of the second drive structure is mounted on the base (18). The output end of the second drive structure is connected to another connector (12). The output shaft axis of the second drive structure is parallel to the axis of the cold mixing chamber (7). During movement, the cold mixing chamber (7) is driven to rotate and sway up and down around the axis of the output shaft of the second drive structure by the second drive structure drive connector (12).

7. The PVC cold and hot blending mixer according to claim 4, characterized in that: There are two connectors (12), and the cross-section of both connectors (12) is circular. The ends of the two connectors (12) that are close to each other are symmetrically fixed to both sides of the cold mixing chamber (7). The third drive assembly includes a support frame, the bottom of which is mounted on a base (18). The support frame is rotatably connected to the outside of the connector (12). One end of the connector (12) is provided with an output shaft of the third drive structure, and the axis of the output shaft of the third drive structure is collinear with the axis of the connector (12). During movement, the third drive structure drives the connector (12) to rotate and sway the cold mixing chamber (7) up and down around the axis of the connector (12) along at least one end of its own axis.

8. The PVC hot and cold blending mixer according to claim 4, characterized in that: The cold mixing chamber (7) is fitted with a heat-insulating protective shell (14) on its outer side; The second cooling component includes a spiral second cold water pipe (19) and several second thermocouples (9), wherein the second cold water pipe (19) is disposed between the thermal insulation protective shell (14) and the cold mixing chamber (7); Several second thermocouples (9) are respectively disposed above and below the inner side of the cold mixing chamber (7).

9. The PVC cold and hot blending mixer according to claim 8, characterized in that: A connecting sleeve (15) is fitted on the outside of the second stirring rack (8). One end of the connecting sleeve (15) passes through one side of the cold mixing chamber (7). A connecting component (16) is connected to the end of the connecting sleeve (15) away from the cold mixing chamber (7). One side of the connecting component (16) is connected to one end of the second stirring rack (8). The connecting sleeve (15) is fixedly connected to a third stirring frame (17) at one end inside the cold mixing chamber (7). The stirring part of the third stirring frame (17) has several chambers. The second thermocouple (9) is installed in the chamber. A temperature guide rod is also installed on the third stirring frame (17). One end of the temperature guide rod is located outside the third stirring frame (17) and contacts the inside of the cold mixing chamber (7). The other end of the temperature guide rod extends through the chamber and contacts the temperature measuring end of the second thermocouple (9).

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