Electric heating water-cooling constant temperature control device of extruder cylinder

Abstract

The utility model relates to the technical field of industrial constant temperature control, and discloses an electric heating water-cooling constant temperature control device of an extruder cylinder, which comprises a regulation and control module, a water tank, a water outlet main pipe, a pressure regulation main pipe, a pressure detector, a circulation pipeline, a recovery pipeline and a plurality of cooling branch pipes. The extruder cylinder is provided with a plurality of constant-temperature areas, each constant-temperature area is provided with a cooling flow channel, the pressure detector is arranged at the output end of the water outlet main pipe, and the pressure regulating main pipe is connected with the water outlet main pipe in parallel; the circulating pipeline is connected in parallel with the cooling branch pipes; each cooling branch pipe is communicated with the water outlet main pipe, each cooling branch pipe is communicated with the recovery pipeline, and each cooling branch pipe is communicated with the corresponding cooling flow channel; the regulation and control module receives a feedback pressure signal, regulates the flow of cooling water in the pressure regulation main pipe and regulates the flow of cooling water in the circulating pipeline and the multiple cooling branch pipes so as to keep the circulating water pressure constant and avoid temperature fluctuation of a constant-temperature area caused by water pressure fluctuation; the circulating pipeline circulates cooling water, dirt accumulation is reduced, and the stability of the thermostat is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial constant temperature control technical field, especially relate to a kind of electric hot water cooling constant temperature control device of extruder barrel. BACKGROUND

[0002] In prior art, most of traditional electric hot water cooling device is through valve assembly to transmit water in water tank to extruder barrel to carry out cooling, and recycle and cool again, and reuse. But part of extruder for masterbatch production line is small equipment, structure is small, and region is dense, and the production process of masterbatch requires high temperature stability, needs heating and cooling to alternate constantly, especially white masterbatch, temperature fluctuation is important reason to influence color difference. In addition, in the process of electric heating initial opening temperature rise, since valve assembly is all in closed state, water in pipeline is not circulating, easy to accumulate dirt, cause temperature failure due to solenoid valve core jam. INNOVATION CONTENT

[0003] The utility model aims at providing a kind of electric hot water cooling constant temperature control device of extruder barrel to solve one or more technical problems existing in prior art, at least provide a kind of beneficial selection or create conditions.

[0004] To achieve the above-mentioned purpose, some embodiments of the present application provide an electric hot water cooling constant temperature control device of extruder barrel, which comprises: the device comprises a water tank, and the water tank is connected with a water outlet main pipe; the device further comprises a pressure detector, a pressure regulating main pipe, a circulation pipeline, a recovery pipeline, a control module and a plurality of cooling branch pipes;

[0005] The pressure detector is arranged at the output end of the water outlet main pipe, the input end of the pressure regulating main pipe is communicated with the water tank, and the output end of the pressure regulating main pipe is communicated with the output end of the water outlet main pipe;

[0006] The input end of the circulation pipeline is communicated with the output end of the water outlet main pipe, and the output end of the circulation pipeline is communicated with the input end of the recovery pipeline;

[0007] The extruder barrel is provided with a plurality of constant temperature zones, and each constant temperature zone is provided with a cooling flow channel;

[0008] The input end of each cooling branch pipe is communicated with the output end of the water outlet main pipe, the output end of each cooling branch pipe is communicated with the input end of the recovery pipeline, and each cooling branch pipe is communicated with the corresponding cooling flow channel;

[0009] The output end of the recovery pipeline is communicated with the water tank, the control module is used for receiving the pressure signal fed back by the pressure detector, adjusting the flow of cooling water in the pressure regulating main pipe, and adjusting the flow of cooling water in the circulation pipeline and the plurality of cooling branch pipes.

[0010] Further, the cooling sub-pipe comprises: a water inlet pipe and a water outlet pipe;

[0011] The input end of the water inlet pipe is communicated with the output end of the water outlet main pipe, and the output end of the water inlet pipe is communicated with the corresponding cooling flow channel;

[0012] The input end of the water outlet pipe is communicated with the corresponding cooling flow channel, and the output end of the water outlet pipe is communicated with the input end of the recycling pipe.

[0013] Further, the water inlet pipe comprises: a first valve, a first filter and a solenoid valve;

[0014] The water inlet of the first valve is communicated with the output end of the water outlet main pipe, the water outlet of the first valve is communicated with the water inlet of the first filter, the water outlet of the first filter is communicated with the corresponding cooling flow channel through the solenoid valve, and the solenoid valve is connected with the control module.

[0015] Further, the water outlet pipe comprises: a one-way valve and a second valve;

[0016] The water inlet of the one-way valve is communicated with the corresponding cooling flow channel, the water outlet of the one-way valve is communicated with the water inlet of the second valve, and the water outlet of the second valve is communicated with the recycling pipe.

[0017] Further, the pressure regulating main pipe comprises: a pressure regulating valve, a third valve and a fourth valve;

[0018] The pressure regulating valve is connected with the control module, the input end of the pressure regulating valve is communicated with the water tank through the third valve, and the output end of the pressure regulating valve is communicated with the output end of the water outlet main pipe through the fourth valve.

[0019] Further, the control module comprises: a pressure regulating unit;

[0020] The pressure regulating unit is connected with the pressure detector and the pressure regulating valve respectively, the pressure regulating unit is used for receiving the pressure signal, adjusting the opening degree of the pressure regulating valve, and adjusting the flow of cooling water in the pressure regulating main pipe.

[0021] Further, the control module comprises: a plurality of temperature regulating units;

[0022] The temperature regulating unit is connected with the corresponding solenoid valve, and the temperature regulating unit is used for adjusting the opening degree of the corresponding solenoid valve, so as to adjust the flow of cooling water in the corresponding cooling sub-pipe.

[0023] Further, a flow promoting valve is arranged on the circulating pipe;

[0024] The flow promoting valve is connected with the control module, a water inlet of the flow promoting valve is communicated with an output end of the water outlet main pipe, and a water outlet of the flow promoting valve is communicated with an input end of the recovery pipeline.

[0025] Further, the water outlet main pipe comprises a second filter, a water pump and a fifth valve;

[0026] A water inlet of the second filter is communicated with the water tank through the fifth valve, a water outlet of the second filter is communicated with the water pump, and the water pump is communicated with the circulation pipeline and the multiple cooling branch pipes respectively.

[0027] Further, the electric heating water cooling constant temperature control device of the extruder barrel body further comprises a heat exchanger;

[0028] One side of the heat exchanger is communicated with an external chilled water pipeline, a water inlet of the other side of the heat exchanger is communicated with the recovery pipeline, and a water outlet of the other side of the heat exchanger is communicated with the water tank.

[0029] The beneficial effects of the utility model are as follows: the temperature of multiple constant temperature regions is adjusted correspondingly by arranging the control module and the multiple cooling branch pipes; the pressure in the circulation loop is adjusted by arranging the pressure regulating main pipe and the pressure detector, the circulation water pressure is kept constant, the circulation water pressure stability is improved, the temperature stability in the constant temperature region is improved, the water pressure fluctuation is avoided when the multiple cooling branch pipes are adjusted and the constant temperature region is cooled, the pressure of the loop is affected, the temperature stability of the constant temperature region is not high due to the frequent water pressure fluctuation, the circulation pipeline and the cooling branch pipe are connected in parallel by arranging the circulation pipeline, the flow of the cooling water in the circulation pipeline is adjusted when the cooling branch pipe stops running, the circulation pipeline is appropriately opened, the cooling water in the circulation loop is continuously circulated, dirt accumulation is reduced, the temperature failure phenomenon caused by the electromagnetic valve core jamming is avoided, and the stability and applicability of the constant temperature device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structure schematic view of an electric heating water cooling constant temperature control device of an extruder barrel body provided by an embodiment of the utility model;

[0031] Figure 2 It is a schematic view of an electric heating water cooling constant temperature control device of an extruder barrel body provided by another embodiment of the utility model;

[0032] Figure 3 It is a circuit schematic view of an electric heating water cooling constant temperature control device of an extruder barrel body provided by an embodiment of the utility model.

[0033] 100, water tank, 200, water outlet main pipe, 210, second filter, 220, water pump, 230, fifth valve, 300, pressure regulating main pipe, 310, pressure detector, 320, pressure regulating valve, 330, third valve, 340, fourth valve, 400, circulation pipeline, 410, flow promoting valve, 500, recovery pipeline, 600, cooling branch pipe, 610, water inlet pipeline, 611, first valve, 612, first filter, 613, electromagnetic valve, 620, water outlet pipeline, 621, one-way valve, 622, second valve, 700, control module, 710, pressure regulating unit, 720, temperature regulating unit, 800, heat exchanger, 900, constant temperature area, 910, cooling flow channel. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0035] It should be noted that although the functional modules are divided in the schematic diagram, in some cases, the module division in the system can be different.

[0036] In addition, it can be understood that the terms "first", "second" and the like used herein can be used to describe various concepts in this paper, but unless specifically stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. The terms "first", "second" are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features. For example, without departing from the scope of the embodiments of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "when" or "in response to determining".

[0037] In the description of the present application, it should be noted that unless otherwise explicitly limited, the words such as setting, installation, connection and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0038] As described in the background, in the prior art, part of the extruders for masterbatch production line is a small device, the structure is small, the area is dense, and the production process of the masterbatch requires high temperature stability, which needs to be heated and cooled alternately, especially for white masterbatch, temperature fluctuation is an important reason affecting color difference. In addition, during the initial heating process of the electric heating, since the valve assembly is in a closed state, the water in the pipeline is not circulated, and dirt is easily accumulated, causing the electromagnetic valve core to be stuck and causing temperature failure.

[0039] Referring to Figure 1 and Figure 2 In some embodiments of the utility model, an electric heating water cooling constant temperature control device of an extruder barrel comprises a regulation and control module 700, a water tank 100, a water outlet main pipe 200, a pressure regulating main pipe 300, a pressure detector 310, a circulation pipeline 400, a recovery pipeline 500 and a plurality of cooling branch pipes 600.

[0040] The water outlet main pipe 200 and the pressure regulating main pipe 300 are connected in parallel, the input end of the water outlet main pipe 200 and the input end of the pressure regulating main pipe 300 are both communicated with the water tank 100, and the output end of the water outlet main pipe 200 is communicated with the output end of the pressure regulating main pipe 300.

[0041] The pressure detector 310 is electrically connected with the regulation and control module 700, the pressure detector 310 is installed at the output end of the water outlet main pipe 200, the pressure detector 310 is located between the water outlet main pipe 200 and the plurality of cooling branch pipes 600, the pressure detector 310 can detect the water pressure in the pipeline and output a pressure signal to the regulation and control module 700.

[0042] The input end of the circulation pipeline 400 is communicated with the output end of the water outlet main pipe 200, that is, also communicated with the output end of the pressure regulating main pipe 300, and the output end of the circulation pipeline 400 is communicated with the input end of the recovery pipeline 500. The circulation pipeline 400 is used to maintain the circulation of cooling water in the device when the plurality of cooling branch pipes 600 are all stopped.

[0043] A plurality of constant temperature zones 900 are arranged on the extruder barrel, each constant temperature zone 900 is provided with a corresponding cooling flow channel 910. The cooling flow channel 910 is communicated with the cooling branch pipe 600 in correspondence, that is, one cooling flow channel 910 is connected with one cooling branch pipe 600, and the number of cooling flow channels 910 is consistent with the number of cooling branch pipes 600.

[0044] The input end of each cooling branch pipe 600 is communicated with the output end of the water outlet main pipe 200, that is, also communicated with the output end of the pressure regulating main pipe 300, the output end of each cooling branch pipe 600 is communicated with the input end of the recovery pipeline 500, and each cooling branch pipe 600 is correspondingly connected with a cooling flow channel 910, and each cooling branch pipe 600 can deliver cooling water to the corresponding cooling flow channel 910 to cool the corresponding constant temperature area 900, so as to cool the master batch when the extruder needs to be cooled.

[0045] That is, the plurality of cooling branch pipes 600 are in parallel relationship, and the circulating pipeline 400 is in parallel with the cooling branch pipe 600, and each cooling branch pipe 600 can receive cooling water flowing from the main pipe to cool the corresponding constant temperature area 900 to meet the cooling demand of the extruder.

[0046] The output end of the recovery pipeline 500 is communicated with the water tank 100, and the recovery pipeline 500 can recover the cooling water output by the plurality of cooling branch pipes 600 or the circulating pipeline 400 to the water tank 100 for recycling.

[0047] The regulating module 700 is connected with the pressure regulating main pipe 300, the circulating pipeline 400 and the plurality of cooling pipelines respectively.

[0048] Since the temperature stability is achieved by continuously alternating heating and cooling, and the balance point required by the production state is combined. When the heating state is in a steady state, the PID parameters of the regulating module 700 are fixed, and the cooling water is quantified, which is very necessary. And the extruder is provided with a plurality of constant temperature areas 900, and the constant temperature output signals of each area will change constantly, and the number of running in the plurality of cooling pipelines will affect the pressure of the circulating loop, and the water pressure is too high, which will affect the sharp drop of temperature and also affect the temperature drop of other areas, and the water pressure is too small, and the temperature is difficult to drop.

[0049] Therefore, the water pressure needs to be regulated in the present application to reduce the influence of the water pressure on the constant temperature area 900. The regulating module 700 can regulate the flow of cooling water in the pressure regulating main pipe 300 according to the pressure signal, so as to regulate the water pressure in the loop, so that the circulating water pressure is constant, thereby improving the temperature stability of the constant temperature area 900, avoiding affecting the pressure of the loop when regulating the plurality of cooling branch pipes 600, and avoiding the case that the temperature stability of the constant temperature area 900 is not high due to frequent water pressure fluctuation.

[0050] Since the circulating water in the circulating loop cannot be circulated when the plurality of cooling pipelines are in a closed state, the cooling water in the recovery pipeline 500 will be retained.

[0051] Therefore, the regulating module 700 can regulate the flow of cooling water in the circulating pipeline 400, so that the cooling water in the circulating loop circulates uninterruptedly. The accumulation of dirt is reduced, and the temperature fault phenomenon caused by the core of the electromagnetic valve 613 being stuck.

[0052] In the prior art, the extruder for the masterbatch production line has high requirements for temperature stability, and needs to be heated and cooled alternately.

[0053] Therefore, based on one cooling flow channel 910 connecting one cooling branch pipe 600, when cooling is needed in the corresponding constant temperature area 900, the regulating module 700 can receive the corresponding cooling signal, regulate the flow of cooling water in the corresponding cooling branch pipe 600, regulate the flow of cooling water flowing through the corresponding cooling flow channel 910, and cool the corresponding constant temperature area 900. Alternatively, when multiple constant temperature areas 900 need to be cooled, the regulating module 700 can receive multiple cooling signals, regulate the flow of cooling water in multiple cooling branch pipes 600, regulate the flow of cooling water flowing through multiple cooling flow channels 910, and cool multiple constant temperature areas 900.

[0054] In an embodiment, the device further comprises a heat exchanger 800. One side of the heat exchanger 800 communicates with an external chilled water pipeline, and the other side of the heat exchanger 800 respectively communicates with the water tank 100 and the recovery pipeline 500. That is, the water inlet on the other side communicates with the recovery pipeline 500, and the water outlet on the other side communicates with the water tank 100.

[0055] Through the heat exchanger 800, the cooling water recovered by the recovery pipeline 500 is cooled again under the action of external chilled water and is delivered to the water tank 100, so as to realize recycling and circulating cooling.

[0056] Among them, the heat exchanger 800 can be a plate heat exchanger 800.

[0057] Through the above scheme, the temperature of multiple constant temperature areas 900 is adjusted correspondingly by setting the regulating module 700 and multiple cooling branch pipes 600; the pressure in the circulating loop is adjusted by setting the pressure regulating main pipe 300 and the pressure detector 310, so as to keep the circulating water pressure constant and improve the stability of the circulating water pressure, thereby improving the temperature stability in the constant temperature area 900, avoiding the influence of the pressure in the circulating loop when the multiple cooling branch pipes 600 are adjusted to cool the constant temperature area 900, and the case that the temperature stability of the constant temperature area 900 is not high due to frequent water pressure fluctuations; by connecting the circulating pipeline 400 and the cooling branch pipe 600 in parallel through the circulating pipeline 400, when the cooling branch pipe 600 stops running, the flow of cooling water in the circulating pipeline 400 is adjusted, the circulating pipeline 400 is appropriately opened, the cooling water in the circulating loop circulates uninterruptedly, and the accumulation of dirt is reduced, and the temperature fault phenomenon caused by the core of the electromagnetic valve 613 being stuck.

[0058] Referring to Figure 1 and Figure 2 In some embodiments of the present application, each cooling branch pipe 600 comprises: a water inlet pipe 610 and a water outlet pipe 620.

[0059] The input end of the water inlet pipe 610 is in communication with the output end of the water outlet main pipe 200, i.e. in communication with the output end of the pressure regulating main pipe 300. The output end of the water inlet pipe 610 is in communication with the corresponding cooling flow channel 910, and the water inlet pipe 610 can transmit the cooling water in the water outlet pipe 620 to the corresponding cooling flow channel 910 to cool the corresponding constant temperature area 900.

[0060] The input end of the water outlet pipe 620 is in communication with the corresponding cooling flow channel 910, and the output end of the water outlet pipe 620 is in communication with the input end of the recycling pipe 500. The water outlet pipe 620 can output the cooling water in the corresponding cooling flow channel 910 to the recycling pipe 500 for recycling and reuse.

[0061] In an embodiment, the water inlet pipe 610 comprises: a first valve 611, a first filter 612 and a solenoid valve 613.

[0062] The water inlet of the first valve 611 is in communication with the output end of the water outlet main pipe 200, i.e. in communication with the output end of the pressure regulating main pipe 300, the water outlet of the first valve 611 is in communication with the water inlet of the first filter 612, the water outlet of the first filter 612 is connected to one end of the solenoid valve 613, the other end of the solenoid valve 613 is in communication with the corresponding cooling flow channel 910, and the solenoid valve 613 is electrically connected to the control module 700.

[0063] The cooling water in the water outlet main pipe 200 flows through the first valve 611, the first filter 612 and the solenoid valve 613 in sequence, and finally flows into the corresponding cooling flow channel 910.

[0064] The control module 700 can control the opening degree of the solenoid valve 613, and by adjusting the opening degree of the solenoid valve 613, the cooling water in the water outlet main pipe 200 can flow to the corresponding cooling flow channel 910 to cool the corresponding constant temperature area 900.

[0065] In an embodiment, the water outlet pipe 620 comprises: a one-way valve 621 and a second valve 622.

[0066] The water inlet of the one-way valve 621 is in communication with the corresponding cooling flow channel 910, the water outlet of the one-way valve 621 is in communication with the water inlet of the second valve 622, and the water outlet of the second valve 622 is in communication with the recycling pipe 500.

[0067] The cooling water corresponding to the constant temperature area 900 flows through the corresponding cooling flow channel 910, sequentially flows through the one-way valve 621 and the second valve 622, and finally flows into the recovery pipeline for recovery.

[0068] The one-way valve 621 and the second valve 622 avoid the backflow of the cooling water.

[0069] In the above embodiment, part of the pipeline is communicated with the flow channel of the extruder barrel to cool the constant temperature area 900, so as to meet the requirement of continuous alternation of heating and cooling in the production state.

[0070] With reference to Figure 1 and Figure 2 In some embodiments of the utility model, the pressure regulating main pipe 300 comprises a pressure regulating valve 320, a third valve 330 and a fourth valve 340.

[0071] The water inlet of the third valve 330 is communicated with the water tank 100, the water outlet of the third valve 330 is communicated with the input end of the pressure regulating valve 320, the output end of the pressure regulating valve 320 is communicated with the water inlet of the fourth valve 340, and the water outlet of the fourth valve 340 is communicated with the output end of the water outlet main pipe 200.

[0072] The pressure regulating valve 320 is electrically connected with the regulation and control module 700, the regulation and control module 700 can adjust the opening degree of the pressure regulating valve 320 according to the feedback pressure signal, thereby adjusting the pressure in the loop, avoiding that the water pressure is too large or too small, affecting the cooling water flowing to the constant temperature area 900, thereby affecting the temperature regulation stability of the constant temperature area 900.

[0073] The pressure regulating valve 320 is an E / P regulating valve.

[0074] With reference to Figure 1 and Figure 3 In some embodiments of the utility model, the regulation and control module 700 comprises a pressure regulating unit 710 and a plurality of temperature regulating units 720.

[0075] The input end of the pressure regulating unit 710 is electrically connected with the pressure detector 310, the output end of the pressure regulating unit 710 is electrically connected with the pressure regulating valve 320, the pressure regulating unit 710 can adjust the opening degree of the pressure regulating valve 320 according to the feedback pressure signal, thereby adjusting the flow of the cooling water in the pressure regulating main pipe 300, adjusting the pressure in the loop, avoiding that the water pressure is too large or too small, affecting the cooling water flowing to the constant temperature area 900, thereby affecting the temperature regulation stability of the constant temperature area 900.

[0076] A temperature regulating unit 720 is electrically connected with the electromagnetic valve 613 in the water inlet pipeline 610, the temperature regulating unit 720 can adjust the opening of the corresponding electromagnetic valve 613, so as to adjust the flow of the cooling water in the corresponding cooling branch pipeline 600, thereby adjusting the corresponding constant temperature area 900.

[0077] The temperature regulating unit 720 can include a temperature controller and a heating plate, and the temperature controller and the heating plate are arranged in the corresponding constant temperature area 900. When the temperature of the constant temperature area 900 is lower than the set temperature threshold, the temperature controller outputs a heating signal to control the heating plate to operate, and the constant temperature area 900 is heated; when the temperature of the constant temperature area 900 is higher than the set temperature threshold, the temperature controller outputs a cooling signal to adjust the opening of the corresponding electromagnetic valve 613, and the cooling water flows in, and the constant temperature area 900 is cooled.

[0078] Since the temperature stability is achieved by continuously alternating heating and cooling, and the balance point required by the production state is combined. When the power of the heating plate is fixed, the PID parameters of the temperature controller are fixed, and the steady state is entered, the quantitative cooling water is very necessary. Therefore, the water pressure needs to be regulated and controlled in the present application to keep the circulating water pressure constant to reduce the influence of the water pressure on the constant temperature area 900.

[0079] Referring to Figures 1 to 3 In some embodiments of the present application, a flow promoting valve 410 is arranged on the circulating pipeline 400.

[0080] The flow promoting valve 410 is electrically connected with the regulating and controlling module 700, the water inlet of the flow promoting valve 410 is communicated with the output end of the water outlet main pipe 200, that is, communicated with the output end of the pressure regulating main pipe 300, and the water outlet of the flow promoting valve 410 is communicated with the input end of the recovery pipeline 500.

[0081] The regulating and controlling module 700 can adjust the opening of the flow promoting valve 410, so as to adjust the flow of the cooling water in the circulating pipeline 400, thereby maintaining the circulation of the cooling water.

[0082] In the prior art, when the constant temperature area 900 is heated and the electromagnetic valves 613 are all closed, the water in the cooling water circuit cannot circulate, and the backwater will return to the water tank 100 from the pressure regulating main pipe 300. At this time, the water in the main pipe is continuously heated and warmed, and the pipe wall is easy to produce scale, which will cause the pipe to be blocked after a long time, or the particles will block the valve core of the electromagnetic valve 613. Therefore, the flow promoting valve 410 is communicated at the output end of the main pipe, so that the circulating loop can circulate continuously when the electromagnetic valves 613 are all closed.

[0083] Referring to Figures 1 to 3 In some embodiments of the present application, the water outlet main pipe 200 includes a second filter 210, a water pump 220 and a fifth valve 230.

[0084] The water inlet of the fifth valve 230 is communicated with the water tank 100, the water outlet of the fifth valve 230 is communicated with the water inlet of the second filter 210, the water outlet of the second filter 210 is communicated with one end of the water pump 220, and the other end of the water pump 220 is communicated with the circulating pipeline 400 and the multi-way cooling branch pipeline 600 respectively, so as to supply cooling water to the circulating pipeline 400 and the multi-way cooling branch pipeline 600.

[0085] The above describes the preferred embodiments of the present application, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. The equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. An electrically heated water cooled thermostatic control device for an extruder barrel, characterized by, The device comprises a water tank connected with a water outlet main pipe; the device further comprises a pressure detector, a pressure regulating main pipe, a circulation pipeline, a recovery pipeline, a control module and multiple cooling branch pipes; The pressure detector is arranged at the output end of the water outlet main pipe, the input end of the pressure regulating main pipe is communicated with the water tank, and the output end of the pressure regulating main pipe is communicated with the output end of the water outlet main pipe; The input end of the circulation pipeline is communicated with the output end of the water outlet main pipe, and the output end of the circulation pipeline is communicated with the input end of the recovery pipeline; The extruder cylinder is provided with multiple constant temperature zones, and each constant temperature zone is provided with a cooling flow channel; The input end of each cooling branch pipe is communicated with the output end of the water outlet main pipe, the output end of each cooling branch pipe is communicated with the input end of the recovery pipeline, and each cooling branch pipe is communicated with a corresponding cooling flow channel; The output end of the recovery pipeline is communicated with the water tank, the control module is used for receiving the pressure signal fed back by the pressure detector, adjusting the flow of cooling water in the pressure regulating main pipe, and adjusting the flow of cooling water in the circulation pipeline and multiple cooling branch pipes.

2. The electrically heated water cooled thermostat control for an extruder barrel of claim 1 wherein, The cooling branch pipe comprises a water inlet pipeline and a water outlet pipeline; The input end of the water inlet pipeline is communicated with the output end of the water outlet main pipe, and the output end of the water inlet pipeline is communicated with a corresponding cooling flow channel; The input end of the water outlet pipeline is communicated with a corresponding cooling flow channel, and the output end of the water outlet pipeline is communicated with the input end of the recovery pipeline.

3. The electrically heated water cooled thermostat control for an extruder barrel of claim 2 wherein, The water inlet pipeline comprises a first valve, a first filter and an electromagnetic valve; The water inlet of the first valve is communicated with the output end of the water outlet main pipe, the water outlet of the first valve is communicated with the water inlet of the first filter, the water outlet of the first filter is communicated with a corresponding cooling flow channel through the electromagnetic valve, and the electromagnetic valve is connected with the control module.

4. The electrically heated water cooled thermostat control for an extruder barrel of claim 2 wherein, The water outlet pipeline comprises a check valve and a second valve; The water inlet of the check valve is communicated with a corresponding cooling flow channel, the water outlet of the check valve is communicated with the water inlet of the second valve, and the water outlet of the second valve is communicated with the recovery pipeline.

5. The electrically heated water cooled thermostat control for an extruder barrel of claim 1 wherein, The pressure regulating main pipe comprises a pressure regulating valve, a third valve and a fourth valve; The pressure regulating valve is connected with the control module, the input end of the pressure regulating valve is communicated with the water tank through the third valve, and the output end of the pressure regulating valve is communicated with the output end of the water outlet main pipe through the fourth valve.

6. The electrically heated water cooled thermostat control for an extruder barrel of claim 5 wherein, The control module comprises a pressure regulating unit; The pressure regulating unit is connected with the pressure detector and the pressure regulating valve respectively, and is used for receiving the pressure signal, adjusting the opening degree of the pressure regulating valve, and adjusting the flow of cooling water in the pressure regulating main pipe.

7. The electrically heated water cooled thermostat control for an extruder barrel as claimed in claim 3 wherein, The control module comprises multiple temperature regulating units; The temperature regulating unit is connected with a corresponding electromagnetic valve, and is used for adjusting the opening degree of the corresponding electromagnetic valve, and adjusting the flow of cooling water in the corresponding cooling branch pipe.

8. The electrically heated water cooled thermostat control for an extruder barrel of claim 1 wherein, A flow promoting valve is arranged on the circulation pipeline. The flow promoting valve is connected with the control module, a water inlet of the flow promoting valve is communicated with an output end of the water outlet main pipe, and a water outlet of the flow promoting valve is communicated with an input end of the recovery pipeline.

9. The electrically heated water cooled thermostat control for an extruder barrel of claim 1 wherein, The water outlet main pipe comprises a second filter, a water pump and a fifth valve. A water inlet of the second filter is communicated with the water tank through the fifth valve, a water outlet of the second filter is communicated with the water pump, and the water pump is communicated with the circulation pipeline and the plurality of cooling branch pipes respectively.

10. The electrically heated water cooled thermostat control for an extruder barrel of claim 1 wherein, Further comprising: A heat exchanger; One side of the heat exchanger is communicated with an external chilled water pipeline, a water inlet of the other side of the heat exchanger is communicated with the recovery pipeline, and a water outlet of the other side of the heat exchanger is communicated with the water tank.

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