Automatic temperature control device

Abstract

The utility model belongs to the technical field of temperature control, particularly relates to an automatic temperature control device, and aims to solve the problem that the opening degree of a valve and the precision control of flow and temperature are influenced due to errors in transmission of an actuator. The device comprises a pipeline and a valve arranged on the pipeline, wherein a rotating shaft of the valve is fixedly connected with an installation disc (4), a heat insulation lining (5), an insertion rod (6), an installation plate (7) and the output end of an execution motor (8) in sequence. The device has the characteristics of simple structure, convenience in use, high safety, small size, small transmission error and high control precision.

Description

Technical Field

[0001] This utility model relates to the field of temperature control technology, and in particular to an automatic temperature control device. Background Technology

[0002] In the production of copper clad laminates, the process of impregnating flexible reinforcing materials (wood pulp paper or fiberglass cloth) into an adhesive solution of a certain viscosity, and then drying the solvent and volatile low-molecular-weight substances to form a semi-cured sheet is called adhesive application, which is one of the important steps in the production of copper clad laminates.

[0003] The drying process uses hot air as a heat source, transferring heat through forced circulation within the drying oven. Typically, according to production process requirements, the entire drying process is divided into 6-8 different temperature zones, adjustable from 100-180℃, with each zone's temperature control accuracy within ±1.5℃. Taking 320℃ fresh hot air as an example, to achieve the required drying temperature, each zone of the drying oven is equipped with an automatic temperature control device. The electric actuator controls the valve opening via a 4-20mA signal output from a temperature controller, thereby controlling the temperature.

[0004] The current transmission device, due to the temperature inside the pipeline being around 320℃, causes the electric actuator to overheat and malfunction, frequently resulting in excessive temperature control errors in the oven. In addition, due to the large cantilever size, in order to ensure the rigidity of the mechanism, the original design valve used a pressure rating of 0.6Mpa, and the electric actuator was selected with a torque of 300N.M. The dimensions of the drive shaft, frame, and drive shaft are all large, resulting in a large size, heavy weight, and high cost of the control device.

[0005] To address the aforementioned issues, patent publication number CN201672070U discloses an automatic temperature control device, comprising an electric actuator, a butterfly valve, and pipelines. The electric actuator is fixedly connected to a frame via bolts, and the frame is fixedly connected to the pipelines. The electric actuator is fixedly connected to the valve via sprockets and chains. This device features a simple structure, ease of use, high safety, small size, light weight, low cost, long service life, and cost savings.

[0006] However, the above technical solution uses chain drive, and the mechanical backlash and elastic deformation of the chain drive will cause errors during transmission, which will affect the valve opening and the accuracy of flow and temperature control. Utility Model Content

[0007] To address the aforementioned problems in the prior art, namely the existence of errors in actuator transmission that affect the valve opening and the accuracy of flow and temperature control, this utility model provides an automatic temperature control device.

[0008] The technical solution of this utility model includes:

[0009] An automatic temperature control device includes a pipeline and a valve installed on the pipeline. The device is characterized in that: the outer end of the rotating shaft of the valve is fixedly connected to a mounting plate (4), a set of transmission holes are provided on the mounting plate (4), a heat insulation bushing (5) is embedded in each transmission hole, a plug rod (6) is inserted into each heat insulation bushing (5), the outer end of each plug rod (6) is fixedly connected to a mounting plate (7), and the mounting plate (7) is fixedly connected to the output end of an actuator motor (8).

[0010] It also includes a translation device, which is fixedly connected to the actuator (8), and the translation device drives the actuator (8) to perform linear reciprocating motion.

[0011] The translation device includes a mounting rail (9) fixedly mounted on the pipeline, a slider (10) is provided on the mounting rail (9), the slider (10) is fixedly connected to the actuator motor (8) and drives the actuator motor (8) to move linearly with it, and also includes a threaded rod (11), the threaded rod (11) is engaged with the slider (10) and drives the slider (10) to slide along the mounting rail (9).

[0012] A heat sink is provided between the mounting plate (7) and the actuator (8).

[0013] The radiator consists of multiple spaced-apart sheet-like heat dissipation fins (12).

[0014] The heat insulation bushing (5) is a bushing structure made of ceramic fiber composite material.

[0015] The actuator (8) is a speed-reduced stepper motor.

[0016] There are two transmission holes, which are symmetrically distributed on the mounting plate (4).

[0017] The beneficial effects of this utility model are:

[0018] (1) This utility model regulates the flow rate of the pipeline by installing a valve on the pipeline, thereby achieving temperature control. When adjustment is required, the motor rotates to drive the mounting plate to rotate, the mounting plate rotates to drive the insert rod to revolve, and then drives the mounting disc to rotate through the heat insulation bushing, which in turn drives the rotating shaft to drive the butterfly valve mechanism of the valve to adjust the opening, thereby achieving flow regulation.

[0019] (2) This utility model reduces the heat transmitted from the valve and the shaft by means of the heat insulation effect of the heat insulation bushing, and avoids the heat from interfering with the operation of the motor.

[0020] (3) The present invention is equipped with a translation device. When the heat insulation bushing becomes loose after long-term operation, the translation device drives the actuator motor to move outward, thereby driving the insert rod to move out of the heat insulation bushing. At this time, the heat insulation bushing is replaced. After the replacement is completed, the translation device reverses its action and the insert rod is reinserted into the heat insulation bushing to complete the installation.

[0021] (4) By setting up a heat sink, this utility model solves the problem of heat affecting the operation of the actuator motor.

[0022] (5) This utility model reduces transmission error by using rigid shaft transmission, thus ensuring the control accuracy of flow rate and temperature. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the automatic temperature control device described in this utility model;

[0025] Figure 2 This is a schematic diagram of the automatic temperature control device described in this utility model from the left side.

[0026] Figure Labels

[0027] 1-Pipeline, 2-Valve, 3-Shaft, 4-Mounting plate, 5-Insulation bushing, 6-Plug, 7-Mounting plate, 8-Actuator motor, 9-Mounting guide rail, 10-Slider, 11-Threaded rod, 12-Heat dissipation fins. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] This invention provides an automatic temperature control device.

[0031] like Figure 1 , Figure 2 As shown, the automatic temperature control device of this utility model includes a pipeline 1, a valve 2, a rotating shaft 3, a mounting plate 4, a heat insulation bushing 5, a plug rod 6, a mounting plate 7, an actuator motor 8, and a translation device.

[0032] A valve 2 is installed on the pipeline 1. A rotating shaft 3 is installed at the input end of the valve 2. An installation plate 4 is installed on the rotating shaft 3. Two symmetrical holes are opened on the installation plate 4. A heat insulation bushing 5 is inserted into the hole. A rod 6 is tightly inserted into the heat insulation bushing 5. The outer end of the rod 6 is connected to the installation plate 7. The installation plate 7 is connected to the actuator motor 8.

[0033] The lower part of the actuator 8 is connected to a translation device, which includes a mounting guide rail 9, a slider 10, and a threaded rod 11. The mounting guide rail 9 is fixedly mounted on the pipeline 1. The slider 10 is slidably mounted on the mounting guide rail 9. The upper end of the slider 10 is connected to the actuator 8. The threaded rod 11 is engaged on the slider 10. The inner end of the threaded rod 11 is rotatably mounted on the guide rail 9. The rotation of the threaded rod 11 drives the slider 10 to move, which in turn drives the actuator 8 to move.

[0034] In this utility model, a heat dissipation fin 12 is provided between the mounting plate 7 and the actuator 8. The heat dissipation fin 12 is a plurality of spaced sheet-like structures, which dissipate the residual heat between the mounting plate 7 and the actuator 8.

[0035] In this utility model, the heat insulation bushing 5 is a bushing structure made of ceramic fiber composite material.

[0036] In this invention, the actuator 8 is a geared stepper motor, which can precisely control the opening angle of the valve 2.

[0037] In this utility model, valve 2 is a butterfly valve.

[0038] In this utility model, all electrical components and their compatible power supplies are connected by wires. According to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence should refer to the working principle described below, in which the electrical components work sequentially to complete the electrical connection. The detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0039] The working principle of this utility model:

[0040] During operation, the flow rate is regulated by the valve 2 installed on pipeline 1, thereby achieving temperature control. When adjustment is required, the actuator 8 drives the mounting plate 7 to rotate, and the mounting plate 7 drives the mounting disc 4 to rotate via the insert rod 6, which in turn drives the valve 2 to adjust its opening degree via the rotating shaft 3, thereby achieving flow rate regulation.

[0041] The heat insulation function of the heat insulation bushing 5 reduces the heat transferred from the valve 2 and the rotating shaft 3, preventing heat from interfering with the operation of the actuator motor 8. When the heat insulation bushing 5 becomes loose after long-term operation, the translation device drives the actuator motor 8 to move outward, thereby moving the insertion rod 6 out of the heat insulation bushing 5. At this time, the heat insulation bushing 5 is replaced. After the replacement is completed, the translation device reverses its movement, and the insertion rod 6 is reinserted into the heat insulation bushing 5 to complete the installation.

[0042] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0045] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A temperature automatic control device comprising a pipe and a valve provided on the pipe, characterized in that: The outer end of the rotating shaft of the valve is fixedly connected with a mounting disc (4), a group of transmission holes are arranged on the mounting disc (4), a heat insulation bushing (5) is inlaid in each transmission hole, a plug rod (6) is inserted in each heat insulation bushing (5), the outer end of each plug rod (6) is fixedly connected with a mounting plate (7), and the mounting plate (7) is fixedly connected with the output end of an executing motor (8).

2. The temperature automatic control device according to claim 1, wherein: A translation device is further included, which is fixedly connected with the executing motor (8), and drives the executing motor (8) to do linear reciprocating motion.

3. The temperature automatic control device according to claim 2, wherein: The translation structure includes a mounting guide rail (9) fixedly arranged on the pipeline, a sliding block (10) is arranged on the mounting guide rail (9), the sliding block (10) is fixedly connected with the executing motor (8) and drives the executing motor (8) to do linear motion, and a threaded rod (11) is engagedly connected with the sliding block (10) and drives the sliding block (10) to slide along the mounting guide rail (9).

4. The temperature automatic control device according to claim 1, wherein: A heat radiator is arranged between the mounting plate (7) and the executing motor (8).

5. The temperature automatic control device according to claim 4, wherein: The heat radiator is a plurality of spaced-apart sheet-shaped heat dissipation fins (12).

6. The temperature automatic control device according to claim 1, wherein: The heat insulation bushing (5) is a bushing structure of ceramic fiber composite material.

7. The temperature automatic control device according to claim 1, wherein: The executing motor (8) is a reduction step motor.

8. The temperature automatic control device according to claim 1, wherein: The transmission holes are two and are symmetrically distributed on the mounting disc (4).

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