A heat retaining device for a rotary valve

Abstract

The utility model belongs to the pneumatic conveying technical field relates to a kind of heat preservation device for rotary valve, including the heat preservation box for placing rotary valve, the heat preservation box is by frame unit and the cuboid accommodating space formed by detachable installation on frame unit heat preservation panel, and the upper side, front side and rear side of heat preservation box are respectively set with the through hole matched with the feeding port, air inlet and discharge port of rotary valve one by one, the control unit electrically connected with outside PLC is further equipped in the heat preservation box inside, the control unit includes temperature sensor, and electric heating wire is arranged on at least one side face.The utility model can realize that rotary valve is in outdoor environment, automatically heat preservation in winter, summer quick disassembly, and degree of automation is high, can greatly reduce manpower cost, with simple structure, stable and reliable, easy maintenance, economy is good and the like advantages.

Description

Technical Field

[0001] The utility model belongs to the technical field of pneumatic conveying, and particularly relates to a heat preservation device for a rotary valve. Background Technique

[0002] The rotary valve is a key component in the pneumatic conveying system, mainly used to control the quantitative conveying of materials, isolate the upstream and downstream pressures, and ensure the stable operation of the system; it is widely used in industries such as chemical industry, food, building materials, and electric power; for the rotary valve installed in cold regions, the temperature can reach as low as -50°C in winter, and the performance of electrical components such as sensors and motors supporting the rotary valve is severely affected in such a low ambient temperature, thus affecting normal production; while the temperature can reach as high as 40°C in summer, and the rotary valve cannot be in a closed box, otherwise it will affect heat dissipation and also affect normal production.

[0003] In view of this, a heat preservation device for a rotary valve that can automatically keep warm in winter, be quickly disassembled in summer, and is convenient for maintenance is needed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects and deficiencies in the prior art, and design a heat preservation device for a rotary valve with a simple structure, stable and reliable, which can be quickly installed and disassembled and is convenient for maintenance.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a heat preservation device for a rotary valve, including a heat preservation box body for placing the rotary valve, the heat preservation box body is a cuboid accommodating space formed by a frame unit and heat preservation panels detachably installed on the frame unit, and through holes respectively cooperating with the feeding port, air inlet and discharging port on the rotary valve are provided above, at the front side and at the rear side of the heat preservation box body, a control unit electrically connected to an external PLC is further arranged inside the heat preservation box body, and the control unit includes a temperature sensor and heating wires arranged on at least one side surface.

[0006] Preferably, two heat preservation panels are symmetrically provided above, at the front side and at the rear side of the heat preservation box body respectively, and the heat preservation panels are made of heat preservation materials.

[0007] Preferably, the two symmetrically arranged heat preservation panels can slide towards or away from each other on the frame unit.

[0008] Preferably, the heat preservation panels and the frame unit are detachably connected by bolts.

[0009] Preferably, a sight glass corresponding to the instrument assembly on the rotary valve is provided on the left side of the heat preservation box body.

[0010] Preferably, the heating wires are arranged on the bottom surface of the heat preservation box body, and are electrically connected to an external power supply through a junction box.

[0011] Preferably, the bottom of the insulated box is also provided with four support feet.

[0012] After adopting the above technical solution, the heat preservation device for rotary valve provided by this utility model has the following beneficial effects:

[0013] This invention enables the rotary valve to automatically maintain its temperature in winter and be quickly disassembled in summer in outdoor environments. It has the advantages of simple structure, stability and reliability, convenient maintenance, and good economy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a heat preservation device for a rotary valve according to the present invention;

[0015] Figure 2 This is a schematic diagram of the rotary valve in this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the insulation box in this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the insulation panel that opens to the left and right in this utility model;

[0018] Figure 5 This is a schematic diagram of the control unit part of this utility model.

[0019] The components include: rotary valve 1, insulation box 2, frame unit 3, insulation panel 4, feed inlet 5, air inlet 6, discharge outlet 7, through hole 8, temperature sensor 9, heating wire 10, instrument assembly 11, sight glass 12, junction box 13, support foot 14, motor 15, and sensor 16. Detailed Implementation

[0020] The present invention will now be described in further clear and complete detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0023] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0024] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0025] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0026] This utility model discloses a heat preservation device for a rotary valve, such as... Figure 1-5 As shown, the device includes an insulated housing 2 for housing a rotary valve 1. The insulated housing 2 is a cuboid-shaped accommodating space formed by a frame unit 3 and an insulated panel 4 detachably mounted on the frame unit 3. The insulated panel 4 is made of insulating material. The top, front, and rear sides of the insulated housing 2 are respectively provided with through holes 8 that correspond to the feed inlet 5, air inlet 6, and discharge outlet 7 of the rotary valve 1. To facilitate the installation of pipes and the removal of the insulated panels 4, two insulated panels are symmetrically arranged on the top, front, and rear sides of the insulated housing 2. 4. That is, after the two insulation panels 4 are spliced ​​together, through holes 8 are formed to match each pipe opening. Furthermore, the two symmetrically arranged insulation panels 4 can slide on the frame unit 3 in a direction that moves closer to or further away from each other, so that they can be disassembled in the left and right directions without affecting production. The insulation panels 4 and the frame unit 3 are detachably connected by bolts. That is, when the insulation panels 4 slide closer to each other into place, they can be fixedly connected to the frame unit 3 by bolts. When it is necessary to disassemble the insulation panels 4, the bolts can be removed first.

[0027] To ensure the stability of the insulation box 2, four support feet 14 are provided at the bottom of the insulation box 2.

[0028] The purpose of using the aforementioned insulated box 2 is to protect the motor 15, sensor 16 and instrument assembly 11 of the rotary valve 1, and to prevent the low temperature environment from affecting their performance. In order to facilitate the observation of the instruments inside the box, the left side of the insulated box 2 has a sight glass 12 that corresponds to the instrument assembly 11 on the rotary valve 1.

[0029] To further improve the thermal insulation performance, the thermal insulation box 2 is also equipped with a control unit that is electrically connected to an external PLC. The control unit includes a temperature sensor 9 and a heating wire 10 arranged on at least one side. The temperature sensor 9 is used to detect the temperature inside the box and feed the signal back to the external PLC. The heating wire 10 is set on the bottom surface of the thermal insulation box 2 and is connected to the external power supply through a junction box 13. Both the temperature sensor 9 and the junction box 13 are fixed on the frame unit 3.

[0030] When this utility model discloses a rotary valve insulation device, it is automatically controlled by a PLC. The PLC automatically collects the current ambient temperature. When the ambient temperature is lower than the set value, the control unit inside the insulation box 2 starts working, and the heating wire 10 is energized to heat. The insulation box 2 is equipped with a temperature sensor 9. When the temperature inside the insulation box 2 reaches the set value for maintaining the temperature, the control unit stops working. This cycle repeats, and the PLC automatically adjusts the temperature inside the box using PID control to achieve the purpose of insulation. When the ambient temperature is higher than the set value, an alarm message is automatically output, and the operator can manually and quickly remove the insulation panel 4 on top of the insulation box 2 to prevent heat from accumulating inside the insulation box 2.

[0031] In summary, the heat preservation device for rotary valves provided by this utility model can automatically keep the rotary valves warm in outdoor environments during winter and allow for quick disassembly in summer. It also features a high degree of automation, which can greatly reduce labor costs. It has advantages such as simple structure, stability and reliability, convenient maintenance, and good economy, and has great market value, making it worthy of widespread promotion and application.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat preservation device for a rotary valve, characterized in that: The device includes an insulated box (2) for housing a rotary valve (1). The insulated box (2) is a cuboid space formed by a frame unit (3) and an insulated panel (4) detachably mounted on the frame unit (3). The insulated box (2) has through holes (8) on its top, front and rear sides that correspond to the feed inlet (5), air inlet (6) and discharge outlet (7) of the rotary valve (1). The insulated box (2) also has a control unit that is electrically connected to an external PLC. The control unit includes a temperature sensor (9) and a heating wire (10) arranged on at least one side.

2. The heat preservation device for a rotary valve according to claim 1, characterized in that: The insulated box (2) is symmetrically provided with two insulated panels (4) on the top, front and rear sides, and the insulated panels (4) are made of insulated material.

3. The heat preservation device for a rotary valve according to claim 2, characterized in that: The two symmetrically arranged insulation panels (4) can slide on the frame unit (3) in a direction that is closer to or farther from each other.

4. The heat preservation device for a rotary valve according to claim 1, characterized in that: The insulation panel (4) and the frame unit (3) are detachably connected by bolts.

5. The heat preservation device for a rotary valve according to claim 1, characterized in that: The left side of the insulated box (2) has a sight glass (12) that corresponds to the instrument assembly (11) on the rotary valve (1).

6. The heat preservation device for a rotary valve according to claim 1, characterized in that: The heating wire (10) is set on the bottom surface of the insulation box (2) and is connected to the external power supply through the junction box (13).

7. A heat preservation device for a rotary valve according to claim 1, characterized in that: The bottom of the insulated box (2) is also provided with four support feet (14).

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