Universal draught hood exhaust linkage device

Abstract

The utility model relates to the technical field of heating and ventilation, in particular to a universal exhaust hood exhaust linkage device which comprises an exhaust hood body, a fixing support, an exhaust pipe, an anti-explosion dust removal exhaust fan, a control valve assembly and a feedback switch assembly, the exhaust hood body is connected with the fixing support and located at the bottom end of the exhaust pipe, the exhaust pipe is connected with the anti-explosion dust removal exhaust fan, and the control valve assembly is located at the bottom end of the exhaust pipe. The control valve assembly is installed in the fixing support, the feedback switch assembly is installed on one side of the outer side wall of the fixing support, and the effects that a butterfly valve handle is rotated, operation is easy and convenient, the draught hood and the exhaust fan are controlled, and air pipe deformation and energy waste caused by the fact that workers forget to close the exhaust fan are avoided are achieved.

Description

Technical Field

[0001] This utility model relates to the field of HVAC technology, and in particular to a universal exhaust hood ventilation linkage device. Background Technology

[0002] Universal exhaust hoods are widely used in the production processes of fine chemicals and pharmaceuticals, such as crushing and feeding.

[0003] The existing universal exhaust hoods on the market have limited functions and cannot be directly linked with their matching dust removal and exhaust fans. Under normal use, an explosion-proof control column needs to be installed separately on the wall of the area where the dust removal and exhaust fans are used to turn on the dust removal and exhaust fans first, and then the universal exhaust hood is turned on for local dust removal and exhaust. This makes it inconvenient to use and easy to forget to turn off the dust removal and exhaust fans.

[0004] Therefore, a universal exhaust hood linkage device is provided, which drives the explosion-proof feedback switch integrated on the exhaust hood by rotating the butterfly valve handle of the exhaust hood, and interlocks the dust removal and exhaust fan to perform local dust removal and exhaust. Utility Model Content

[0005] The purpose of this utility model is to provide a universal exhaust hood linkage device, which solves the problems of inconvenient operation of the exhaust hood and exhaust fan in the existing device, and the fact that the staff may forget to turn off the exhaust fan, resulting in duct deformation and energy waste.

[0006] To achieve the above objectives, this utility model provides a universal exhaust hood linkage device, including an exhaust hood body, a fixed bracket, an exhaust pipe, an explosion-proof dust removal exhaust fan, a control valve assembly, and a feedback switch assembly. The exhaust hood body is connected to the fixed bracket and located at the bottom of the fixed bracket. The fixed bracket is fixedly connected to the exhaust pipe and located at the bottom end of the exhaust pipe. The exhaust pipe is connected to the explosion-proof dust removal exhaust fan. The control valve assembly is installed inside the fixed bracket, and the feedback switch assembly is installed on one side of the outer wall of the fixed bracket.

[0007] The control valve assembly includes a butterfly valve handle and a butterfly valve. The butterfly valve handle is connected to the butterfly valve and is located on one side of the butterfly valve. The butterfly valve is connected to the fixed bracket and is located inside the fixed bracket.

[0008] The feedback switch assembly includes an explosion-proof feedback switch and a control cable. The explosion-proof feedback switch is installed on one side of the fixed bracket. One end of the control cable is connected to the explosion-proof feedback switch, and the other end of the control cable is connected to the explosion-proof dust removal and exhaust fan.

[0009] The feedback switch assembly further includes a connecting rod, one end of which is fixedly connected to the end of the butterfly valve away from the butterfly valve handle, and the other end of which is connected to the explosion-proof feedback switch.

[0010] This utility model discloses a universal exhaust hood linkage device. A fixed bracket is installed on the exhaust hood body, and an explosion-proof feedback switch is installed on the fixed bracket. The two ends of a connecting rod are connected to a butterfly valve and the explosion-proof feedback switch respectively via universal joints. Rotating the butterfly valve handle causes the explosion-proof feedback switch to rotate 90 degrees. The internal electrical contacts of the explosion-proof feedback switch connect or disconnect the control cable connected to the switch, interlocking to start and stop the explosion-proof dust removal fan for localized dust removal and exhaust. Dust is treated by the explosion-proof dust removal fan and then discharged into the atmosphere. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0012] Figure 1 This is a schematic diagram of the structure of the universal exhaust hood linkage device of this utility model.

[0013] In the diagram: Butterfly valve handle-1, Butterfly valve-2, Fixed bracket-3, Connecting rod-4, Explosion-proof feedback switch-5, Exhaust hood body-6, Exhaust pipe-7, Explosion-proof dust removal exhaust fan-8, Control cable-9. Detailed Implementation

[0014] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0015] Please see Figure 1 ,in Figure 1 This is a schematic diagram of the structure of the universal exhaust hood linkage device of this utility model.

[0016] This utility model discloses a universal exhaust hood linkage device, comprising an exhaust hood body 6, a fixed bracket 3, an exhaust pipe 7, an explosion-proof dust removal exhaust fan 8, a control valve assembly, and a feedback switch assembly. The control valve assembly includes a butterfly valve handle 1 and a butterfly valve 2, and the feedback switch assembly includes an explosion-proof feedback switch 5, a control cable 9, and a connecting rod 4. This solution solves the problems of inconvenient operation of the exhaust hood and exhaust fan in existing devices, where workers easily forget to turn off the exhaust fan, leading to duct deformation and energy waste. It is understood that the aforementioned solution can use the rotation of the butterfly valve handle 1 to activate the explosion-proof feedback switch 5 integrated on the exhaust hood body 6, interlocking the dust removal exhaust fan for localized dust removal and exhaust.

[0017] In this embodiment, the system includes an exhaust hood body 6, a fixed bracket 3, an exhaust pipe 7, an explosion-proof dust removal exhaust fan 8, a control valve assembly, and a feedback switch assembly. The exhaust hood body 6 is connected to the fixed bracket 3 and is located at the bottom of the fixed bracket 3. The fixed bracket 3 is fixedly connected to the exhaust pipe 7 and is located at the bottom end of the exhaust pipe 7. The exhaust pipe 7 is connected to the explosion-proof dust removal exhaust fan 8. The control valve assembly is installed inside the fixed bracket 3, and the feedback switch assembly is installed on one side of the outer wall of the fixed bracket 3. The exhaust hood body 6 is a large-diameter trumpet shape for better dust collection. The exhaust hood body 6 and the exhaust pipe 7 are connected by a fixed bracket 3. The fixed bracket 3 is used to install the control valve assembly and the feedback switch assembly. The control valve assembly controls the opening and closing of the fixed bracket 3, thereby controlling the connection and closure between the exhaust hood body 6 and the exhaust pipe 7. The feedback switch assembly is used to interlock the explosion-proof dust collector exhaust fan 8. The explosion-proof dust collector exhaust fan 8 is used for dust collection and exhaust. Dust is discharged into the atmosphere after being processed by the explosion-proof dust collector fan. The diameter of the exhaust pipe 7 is determined according to the explosion-proof dust collector... The exhaust volume and air pressure requirements of the exhaust fan 8 are selected. Therefore, firstly, the fixed bracket 3 is connected and installed at the upper outlet position of the exhaust hood body 6, ensuring that the fixed bracket 3 is installed firmly. Then, the feedback switch assembly is installed on the fixed bracket 3, and the position of the switch is adjusted. Then, one end of the exhaust pipe 7 is connected to the air outlet of the exhaust hood body 6, and the other end of the exhaust pipe 7 is connected to the air inlet of the explosion-proof dust removal exhaust fan 8. The explosion-proof dust removal exhaust fan 8 is started and stopped by interlocking through the feedback switch assembly to start local dust removal and exhaust. The dust is discharged into the atmosphere after being treated by the explosion-proof dust removal fan.

[0018] Secondly, the butterfly valve handle 1 is connected to the butterfly valve 2 and located on one side of the butterfly valve 2; the butterfly valve 2 is connected to the fixed bracket 3 and located inside the fixed bracket 3. The butterfly valve handle 1 is made of stainless steel, and its shape is convenient for operators to grip and rotate. It is connected to the butterfly valve 2 shaft, which can precisely control the opening and closing of the butterfly valve 2. The butterfly valve 2 is connected to the feedback switch assembly. By rotating the butterfly valve handle 1, the butterfly valve 2 is driven to rotate. The rotation of the butterfly valve 2 drives the feedback switch to rotate 90 degrees, triggering the connection or disconnection of the internal electrical contacts of the feedback switch assembly, thereby controlling the start and stop of the explosion-proof dust removal and exhaust fan 8.

[0019] Then, the explosion-proof feedback switch 5 is installed on one side of the fixed bracket 3; one end of the control cable 9 is connected to the explosion-proof feedback switch 5, and the other end of the control cable 9 is connected to the explosion-proof dust removal and exhaust fan 8; one end of the connecting rod 4 is fixedly connected to the end of the butterfly valve 2 away from the butterfly valve handle 1, and the other end of the connecting rod 4 is connected to the explosion-proof feedback switch 5. The explosion-proof feedback switch 5 is a BLX51-J explosion-proof proximity switch, which is connected to the explosion-proof dust collector 8 via the control cable 9. The explosion-proof dust collector 8 is started and stopped by the on / off interlock of the internal electrical contacts of the explosion-proof feedback switch 5. One end of the connecting rod 4 passes through the fixed bracket 3 and is fixedly connected to the butterfly valve 2. The other end of the connecting rod 4 is fixedly connected to the explosion-proof feedback switch 5. By rotating the butterfly valve 2, the explosion-proof feedback switch 5 can be accurately rotated 90 degrees. The dust collector 8 is started and stopped by the control cable 9 connected to the explosion-proof feedback switch 5 through the internal electrical contacts of the explosion-proof feedback switch 5 to start or stop, and local dust removal and exhaust are started. The dust is discharged into the atmosphere after being treated by the explosion-proof dust collector 8.

[0020] When using the universal exhaust hood linkage device of this utility model, the fixed bracket 3 is installed on the exhaust hood body 6, the explosion-proof feedback switch 5 is installed on the fixed bracket 3, and the two ends of the connecting rod 4 are connected to the butterfly valve 2 and the explosion-proof feedback switch 5 respectively through universal joints. Then, the butterfly valve handle 1 is rotated to drive the explosion-proof feedback switch 5 to rotate 90 degrees. The control cable 9 connected to the explosion-proof feedback switch 5 is connected or disconnected through the internal electrical contacts of the explosion-proof feedback switch 5 to interlock the start and stop of the explosion-proof dust removal fan 8 to start local dust removal and exhaust. The dust is discharged into the atmosphere after being treated by the explosion-proof dust removal fan. Thus, the operation of the exhaust hood and the exhaust fan is simple and convenient by rotating the butterfly valve handle 1, avoiding the deformation of the air duct and energy waste caused by the staff forgetting to turn off the exhaust fan.

[0021] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A universal exhaust hood linkage device, characterized in that, The device includes an exhaust hood body, a fixed bracket, an exhaust pipe, an explosion-proof dust removal exhaust fan, a control valve assembly, and a feedback switch assembly. The exhaust hood body is connected to the fixed bracket and is located at the bottom of the fixed bracket. The fixed bracket is fixedly connected to the exhaust pipe and is located at the bottom end of the exhaust pipe. The exhaust pipe is connected to the explosion-proof dust removal exhaust fan. The control valve assembly is installed inside the fixed bracket, and the feedback switch assembly is installed on one side of the outer wall of the fixed bracket.

2. The universal exhaust hood linkage device as described in claim 1, characterized in that, The control valve assembly includes a butterfly valve handle and a butterfly valve. The butterfly valve handle is connected to the butterfly valve and is located on one side of the butterfly valve. The butterfly valve is connected to the fixed bracket and is located inside the fixed bracket.

3. The universal exhaust hood linkage device as described in claim 2, characterized in that, The feedback switch assembly includes an explosion-proof feedback switch and a control cable. The explosion-proof feedback switch is installed on one side of the fixed bracket. One end of the control cable is connected to the explosion-proof feedback switch, and the other end of the control cable is connected to the explosion-proof dust removal and exhaust fan.

4. The universal exhaust hood linkage device as described in claim 3, characterized in that, The feedback switch assembly also includes a connecting rod, one end of which is fixedly connected to the end of the butterfly valve away from the butterfly valve handle, and the other end of which is connected to the explosion-proof feedback switch.

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