Compact temperature control and direct cooling integrated temperature control system

Abstract

The utility model belongs to the technical field of cooling of rubber internal mixers, and particularly relates to a compact temperature control and direct cooling integrated temperature control system which comprises three channels, a rack and a controller, a water pump, a heat exchanger, a heater and a valve are respectively arranged on the channels, and the three channels are fixed on the rack in a coiled mode. The drift diameters of the three channels are proportionally configured according to the heat capacity of a cooling area, and the machine frame is a box-shaped frame, surrounding plates are arranged on the periphery of the machine frame, and the top of the machine frame is open; the second valve is positioned between the third tee joint and the water inlet of the softened water main pipe; the third valve is a check valve; and when the second valve and the seventh valve are synchronously opened and the first valve and the sixth valve are synchronously closed, the system is in a direct cooling state. The utility model has the beneficial effects that: 1) the box-type integral structure is adopted, so that the appearance of the product is more regular; and 2) the temperature control drift diameter and the pipe diameter of the direct cooling pipeline have an associated proportion, so that the safety is better, the direct cooling effect is better, and the normal work of the internal mixer is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling of rubber internal mixers, and in particular relates to a compact temperature control and direct cooling integrated temperature control system. Background Art

[0002] Rubber internal mixer is one of the most basic equipment in the rubber industry. It not only consumes a lot of electricity and cooling water, but also has high temperature control requirements. In order to mix high-performance rubber, improve the material mixing efficiency of the internal mixer, and prevent the material in the internal mixer from being burned due to excessive temperature during the mixing process, and achieve the ideal temperature control effect, people have been conducting research in this area for many years.

[0003] The traditional temperature control method of the traditional rubber mixer is to set the temperature of each section of the mixer according to the requirements of the mixing process, set the temperature value of the temperature regulating instrument, and detect the temperature of the circulating return water port (or circulating water outlet) of each section (temperature sensor, thermocouple or thermal resistor) as the measurement value feedback. Since the temperature control of each section is based on the comparison of the circulating return water temperature with its set temperature value to achieve constant temperature temperature regulation, the electrical energy-mechanical energy-heat energy (to increase the temperature of the mixed rubber compound) is input from the mixer, and the rubber compound is transferred to the circulating water through heat and mass; when the temperature sensor installed on the circulating return water pipeline detects that the temperature of the circulating water is higher than the set temperature, the temperature regulator outputs a cooling control signal to open the cooling valve, so that the circulating water temperature drops, and then the rubber temperature drops through heat and mass transfer. It can be seen that such a temperature regulation method will inevitably produce serious temperature regulation lag due to the cause and effect and timing relationship of heat transfer, making the temperature control untimely.

[0004] The invention patent with application number 201811040472.4 discloses a cooling water flow proportional temperature control device for a rubber internal mixer and a control method thereof, including three channels, a frame and a controller. The channels are respectively provided with a water pump, a heat exchanger, a heater and a valve. The three channels are arranged on the frame and fixed. The three channels are characterized in that the three channels are all self-circulating closed pipelines, and the diameters, heater power, heat exchanger area and water pump power of the three channels are proportionally configured according to the heat capacity of the cooling zone. A temperature sensor or temperature measuring instrument is provided at the circulating water inlet of the heat exchanger. The advantages of this invention are: 1) The three channels are independent of each other and can be heated or cooled separately according to the process requirements. 2) The three working conditions are switched by controlling the switch of the valve to meet the process requirements of the rubber internal mixer. 3) The diameters of each channel are proportionally configured according to the heat capacity of the cooling zone, which can realize fast and effective control of the temperature of the internal mixer. This solution is a prior application of the applicant, and its shortcomings are: in order to achieve precise regulation, too many valves are configured, resulting in an excessively large equipment volume; both the heat exchanger and the water pump adopt an exposed structure, and the product appearance is irregular and not very beautiful. In order to enhance the market competitiveness of the product, further improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to provide a compact temperature control and direct cooling integrated temperature control system, which overcomes the shortcomings of the prior art. On the one hand, it adopts a box-type overall structure to make the product appearance more regular; on the other hand, it further optimizes the structure to greatly reduce the number of valve configurations while meeting the cooling functions under normal cooling and fault conditions, thereby realizing a compact box-type structure and reducing manufacturing costs.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A compact temperature-controlled direct-cooling integrated temperature control system comprises three channels, a frame and a controller, wherein the channels are respectively provided with a water pump, a heat exchanger, a heater and a valve, wherein the three channels are coiled and fixed on the frame, wherein the three channels are all self-circulating closed pipelines, wherein the temperature-controlled diameters of the three channels are configured in proportion according to the heat capacity of the cooling zone, wherein the cooling zones are the side wall of the mixing chamber, the rotor and the discharge door, wherein the three channels are composed of three groups of independent channels with similar structures, wherein the three channels share a cold inlet main pipe, a cold return main pipe and a softened water main pipe, wherein the channels include a first circulation pipe, a second circulation pipe, a third circulation pipe, a fourth circulation pipe, a fifth circulation pipe, a sixth circulation pipe, a seventh circulation pipe and an eighth circulation pipe. a ring pipe, a ninth circulation pipe and a tenth circulation pipe, wherein the first circulation pipe is connected to the softened water main pipe and the water inlet of the water pump, the second circulation pipe is connected between the water outlet of the water pump and the water inlet of the heater, one end of the third circulation pipe is connected to the water outlet of the heater, the other end of the third circulation pipe is connected to one end of the fourth circulation pipe at the first tee, the other end of the fourth circulation pipe is connected to the cold inlet main pipe at the second tee, one end of the fifth circulation pipe is connected to one end of the fourth circulation pipe and the other end of the third circulation pipe at the first tee, the other end of the fifth circulation pipe is connected to the inlet of the cooling zone, and one end of the sixth circulation pipe is connected to the first circulation pipe at the third tee. The other end of the sixth circulation pipe is connected to the circulation outlet of the heat exchanger, one end of the seventh circulation pipe is connected to the circulation inlet of the heat exchanger, the other end of the seventh circulation pipe is connected to the outlet of the cooling zone, one end of the eighth circulation pipe, the other end of the seventh circulation pipe and the outlet of the cooling zone are connected to the fourth tee, the other end of the eighth circulation pipe is connected to the cold outlet main pipe at the fifth tee, one end of the ninth circulation pipe is connected to the cooling water outlet of the heat exchanger, the other end of the ninth circulation pipe is connected to the sixth tee on the cold outlet main pipe, one end of the tenth circulation pipe is connected to the cooling water inlet of the heat exchanger, and the tenth circulation pipe The other end is connected to the cold inlet main pipe at the seventh tee; the first circulation pipe is provided with a second valve, the second circulation pipe is provided with a third valve, the fourth circulation pipe is provided with a seventh valve, the seventh circulation pipe is provided with a first valve, the eighth circulation pipe is provided with a sixth valve; the tenth circulation pipe is provided with a cooling stop valve; the frame is a box-shaped frame with enclosures on all sides and an open top; the second valve is located between the third tee and the water inlet of the softened water main pipe; the third valve is a check valve; when the second valve and the seventh valve are opened synchronously, and the first valve and the sixth valve are closed synchronously, the system is in a direct cooling state, and the fourth circulation pipe and the fifth circulation pipe constitute a direct cooling pipeline.

[0008] Furthermore, the temperature control path ratio of the cooling zone is mixing chamber side wall channel: rotor channel: discharge door channel = DN65: DN50: DN40, and the corresponding direct cooling pipeline diameter ratio is DN50: DN40: DN40.

[0009] Furthermore, the check valve is flange-connected or clamp-connected.

[0010] Furthermore, the heat exchanger is a plate heat exchanger.

[0011] Furthermore, the outline dimensions of the box-shaped frame are 2050 mm in length×1740 mm in width×1595 mm in height.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1) The box-type overall structure makes the product appearance more regular, and the top of the box is open as a heat dissipation channel, which does not affect the cooling performance of the product while maintaining a regular appearance;

[0014] 2) Under the premise of meeting the performance requirements of the product, the number of valves to be configured is greatly reduced, thereby achieving a compact box structure and reducing manufacturing costs.

[0015] 3) Ensure that the equipment has two modes of function: direct cooling and cooling under fault conditions. The cooling water enters the cooling part through the pump and the check valve. The flow resistance is small, which can prevent the cooling water from flowing back into the water pump. The temperature control diameter is proportional to the diameter of the direct cooling pipeline, which has better safety and direct cooling effect, ensuring the normal operation of the internal mixer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 yes Figure 1 Left view of

[0018] Figure 3 yes Figure 1 A top view of

[0019] Figure 4 It is a schematic diagram of the principle of an embodiment of the utility model. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.

[0022] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.

[0023] See Figure 1-4 , is a schematic diagram of the structure of an embodiment of a compact temperature-controlled direct-cooling integrated temperature control system of the utility model, comprising a discharge door channel 11, a rotor channel 12, a mixing chamber side wall channel 13, a frame 1 and a control cabinet 2. The three-way channel is fixed on the frame 1, and the three-way channel is a self-circulating closed pipeline. The temperature control diameters of the three-way channel are configured in proportion according to the heat capacity of the cooling zone. The cooling zones 130 are respectively the mixing chamber side wall, the rotor and the discharge door. The three-way channel is composed of three groups of independent channels with similar structures, wherein the ratio of the temperature control diameters of the cooling zone is the mixing chamber side wall channel: the rotor channel: the discharge door channel = DN65: DN50: DN40, and the corresponding direct cooling pipeline diameter ratio is DN50: DN40: DN40, and the direct cooling pipeline is composed of a fourth circulation pipe 24 and a fifth circulation pipe 25.

[0024] Taking the discharge door channel as an example, the discharge door channel 11 is provided with a water pump 111, a heat exchanger 112, a heater 113 and several valves; the three-way channel coil is fixed on the frame 1. The frame 1 is a box-shaped frame with enclosures around it and an open top. The outline dimensions of the box-shaped frame are 2050mm long × 1740mm wide × 1595mm high. Compared with the existing design, the volume is greatly reduced, making the structure more compact, reducing the manufacturing cost of the product, and at the same time, the product appearance is neat and beautiful, and the market competitiveness of the product is effectively improved.

[0025] The three-way channel of the utility model is composed of three groups of independent channels with similar structures. The three-way channels share a cold inlet main pipe 3, a cold return main pipe 4 and a softened water main pipe 5. One end of the cold inlet main pipe 3 opens at the A end, and the other end stops at a sealing plate A0. One end of the cold return main pipe 4 opens at the B end, and the other end stops at a sealing plate B0. One end of the softened water main pipe 5 opens at the G end, and the other end stops at a sealing plate G0. Taking the discharge door channel as an example, the channel includes a first circulation pipe 21, a second circulation pipe 22, a third circulation pipe 23, a fourth circulation pipe 24, a fifth circulation pipe 25, a sixth circulation pipe 26, a seventh circulation pipe 27, an eighth circulation pipe 28, a ninth circulation pipe 29 and a tenth circulation pipe 30. The first circulation pipe 21 is connected between the softened water main pipe 5 and the water inlet of the water pump 111; the second circulation pipe 22 is connected between the water outlet of the water pump 111 and the water inlet of the heater 113; one end of the third circulation pipe 23 is connected to the water outlet of the heater 113, and the other end is connected to one end of the fourth circulation pipe 24 at the first three-way point T1, and the other end of the fourth circulation pipe 24 is connected to the cold inlet main pipe at the second three-way point T2; one end of the fifth circulation pipe 25 is connected to one end of the fourth circulation pipe and the other end of the third circulation pipe 23 at the first three-way point T1, and the other end of the fifth circulation pipe 25 The inlet of the side guide plate is connected; one end of the sixth circulation pipe 26 is connected to the first circulation pipe 21 at the third three-way T3, and the other end of the sixth circulation pipe 26 is connected to the circulation outlet of the heat exchanger 112; one end of the seventh circulation pipe 27 is connected to the circulation inlet of the heat exchanger 112, and the other end of the seventh circulation pipe 27 is connected to the outlet of the side guide plate; one end of the eighth circulation pipe 28 is connected to the other end of the seventh circulation pipe 27 and the outlet of the side guide plate at the fourth three-way T4, and the other end of the eighth circulation pipe 28 is connected to the cold outlet main pipe 4 at the fifth three-way T5; one end of the ninth circulation pipe 29 is connected to the cooling outlet of the heat exchanger 112, and the other end of the ninth circulation pipe 29 is connected to the sixth three-way T6 on the cold outlet main pipe 4; one end of the tenth circulation pipe 30 is connected to the cooling inlet of the heat exchanger, and the other end of the tenth circulation pipe 30 is connected to the cold inlet main pipe 3 at the seventh three-way T7. Pipeline C is a sewage pipe connected to the bottom of the electric heater 113.

[0026] The first circulation pipe 21 is provided with a second valve 202, which is located between the third three-way T3 and the water inlet of the softened water main pipe 5; the second circulation pipe 22 is provided with a third valve 203, which is a check valve, and the check valve is flange-connected or clamp-connected, and the clamp-connection is preferred to reduce the volume. The fourth circulation pipe 24 is provided with a seventh valve 207, the seventh circulation pipe 27 is provided with a first valve 201, and the eighth circulation pipe 28 is provided with a sixth valve 206. The tenth circulation pipe 30 is provided with a cooling stop valve 208.

[0027] A flow sensor 31, an exhaust valve 32 and a temperature sensor 33 are also provided on the seventh circulation pipe 27 connected to the outlet of the cooling zone, which are used to exhaust the excess gas in the pipeline and detect the temperature and flow.

[0028] The embodiment of the utility model collects the temperature and flow of the circulating water, cooling water and softened water inlets, and the control cabinet adopts PID control algorithm to control the temperature of the three channels of the discharge door, the rotor and the side wall of the mixing chamber, and controls the automatic switching of heating and cooling in each channel respectively, so as to control the temperature of each cooling zone within the set temperature range.

[0029] In the embodiment, when the first valve 201 and the second valve 202 are opened synchronously, and the sixth valve 206 and the seventh valve 207 are closed synchronously, the system is in a temperature control state; when the second valve 202 and the seventh valve 207 are opened synchronously, and the first valve 201 and the sixth valve 206 are closed synchronously, the system is in a direct cooling state; when the first valve 201 and the second valve 202 are closed synchronously, and the sixth valve 206 and the seventh valve 207 are opened synchronously, the system is in a fault state.

[0030] The second valve 202 is located between the third three-way T3 and the water inlet of the softened water main pipe 5; the third valve 203 is a check valve, and in order to reduce the volume, the third valve 203 is a clamp connection form. In order to facilitate the layout and reduce the volume, the heat exchanger 112 is a plate heat exchanger.

[0031] When the system is in direct cooling state: when the ambient temperature (cooling water and softened water temperature) is close to the temperature required for mixing rubber, the sixth valve 206 and the second valve 202 are opened, the seventh valve 207 and the first valve 201 are closed, and the third valve 203 is opened, and the system is converted into direct cooling state. Under the action of its own pressure and the water pump, the softened water passes through the pump, the check valve, the heater, and the circulating water outlet to enter the cooling zone of the internal mixer; the circulating water entering the temperature control system from the internal mixer directly passes through the sixth valve 206 into the cold return main pipe 4 for discharge, ensuring the normal operation of the internal mixer.

[0032] When the system is in a fault state: for example, when the pump fails or the plate heat exchanger leaks, the seventh valve 207 and the sixth valve 206 are opened, the first valve 201 and the second valve 202 are closed, and the third valve 203 is closed. The system is converted into a fault state, and the cooling water directly enters the cooling zone of the internal mixer through the seventh valve 207. The non-return function of the check valve prevents the cooling water from entering the pump; the circulating water entering the temperature control system from the internal mixer directly passes through the sixth valve 206 into the cold return main pipe 4 for discharge, ensuring the normal operation of the internal mixer.

[0033] The valve switching of each working state of the utility model system is shown in Table 1.

[0034] Table 1

[0035]

[0036] The cooling water in the embodiment comes from the factory's internal water supply system, the temperature is generally below 25°C, and is supplied by the tap water pipeline in the factory building with a pressure of 0.4Mp. Softened water is softened water that can replenish the loss of circulating water in the system at any time and protect the water pump.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compact temperature-controlled direct-cooling integrated temperature control system, comprising three channels, a frame and a controller, wherein the channels are respectively provided with a water pump, a heat exchanger, a heater and a valve, wherein the three channels are coiled and fixed on the frame, wherein the three channels are all self-circulating closed pipelines, wherein the temperature-controlled diameters of the three channels are configured in proportion according to the heat capacity of the cooling zone, wherein the cooling zones are the side wall of the mixing chamber, the rotor and the discharge door, wherein the three channels are composed of three groups of independent channels with similar structures, wherein the three channels share a cold inlet main pipe, a cold return main pipe and a softened water main pipe, wherein the channels include a first circulation pipe, a second circulation pipe and a third circulation pipe. a first circulation pipe connected to the softened water main pipe and the water inlet of the water pump; a second circulation pipe connected between the water outlet of the water pump and the water inlet of the heater; one end of the third circulation pipe is connected to the water outlet of the heater; the other end of the third circulation pipe is connected to one end of the fourth circulation pipe at a first tee; the other end of the fourth circulation pipe is connected to the cold inlet main pipe at a second tee; one end of the fifth circulation pipe is connected to one end of the fourth circulation pipe and the other end of the third circulation pipe The fifth circulation pipe is connected to the first tee, the other end of the fifth circulation pipe is connected to the inlet of the cooling zone, one end of the sixth circulation pipe is connected to the first circulation pipe at the third tee, the other end of the sixth circulation pipe is connected to the circulation outlet of the heat exchanger, one end of the seventh circulation pipe is connected to the circulation inlet of the heat exchanger, the other end of the seventh circulation pipe is connected to the outlet of the cooling zone, one end of the eighth circulation pipe, the other end of the seventh circulation pipe and the outlet of the cooling zone are connected to the fourth tee, the other end of the eighth circulation pipe is connected to the cold outlet main pipe at the fifth tee, One end of the ninth circulation pipe is connected to the cooling water outlet of the heat exchanger, the other end of the ninth circulation pipe is connected to the sixth tee on the cold outlet main pipe, one end of the tenth circulation pipe is connected to the cooling water inlet of the heat exchanger, and the other end of the tenth circulation pipe is connected to the cold inlet main pipe at the seventh tee; the first circulation pipe is provided with a second valve, the second circulation pipe is provided with a third valve, the fourth circulation pipe is provided with a seventh valve, the seventh circulation pipe is provided with a first valve, and the eighth circulation pipe is provided with a sixth valve; the tenth circulation pipe is provided with an electric cooling stop valve; characterized in that, The frame is a box-shaped frame with enclosures around it and an open top; the second valve is located between the third tee and the water inlet of the softened water main; the third valve is a check valve; when the second valve and the seventh valve are opened synchronously, and the first valve and the sixth valve are closed synchronously, the system is in a direct cooling state, and the fourth circulation pipe and the fifth circulation pipe constitute a direct cooling pipeline.

2. The compact temperature control and direct cooling integrated temperature control system according to claim 1, characterized in that: The temperature control path ratio of the cooling zone is mixing chamber side wall channel: rotor channel: discharge door channel = DN65: DN50: DN40, and the corresponding direct cooling pipeline diameter ratio is DN50: DN40: DN40.

3. The compact temperature control and direct cooling integrated temperature control system according to claim 1, characterized in that: The check valve is flange-connected or clamp-connected.

4. The compact temperature control and direct cooling integrated temperature control system according to claim 1, characterized in that: The heat exchanger is a plate heat exchanger.

5. The compact temperature control and direct cooling integrated temperature control system according to claim 1, characterized in that: The outline dimensions of the box-shaped frame are 2050 mm long×1740 mm wide×1595 mm high.

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