An odor removal device for a bale wrapping and dusting room

Abstract

This utility model discloses an odor removal device for a roll packaging dust removal room, relating to the field of circuit technology. First, a first fan is started via a first fan starting circuit. Then, a wind pressure sensor monitors the wind pressure inside the duct in real time. Through the combined action of comparator S1, inverter D1, AND gate circuit T1, and transistor Q1, when the wind pressure inside the duct is higher than the set value, it indicates that the air volume and supply pressure meet the requirements, and the second fan starting circuit is de-energized, so the second fan does not start. When the wind pressure inside the duct is lower than the set value, it indicates that the air volume and supply pressure are insufficient, and the second fan starting circuit is energized, so the second fan starts normally, increasing the air volume and supply pressure for the odor removal system, maintaining the wind pressure inside the duct near the set value. This utility model solves the problem of insufficient supply pressure and intermittent surge in existing odor removal systems when dust removal equipment is added to the roll packaging dust removal room, while also being more economical.

Description

Technical Field

[0001] This utility model relates to the field of circuit technology, and in particular to an odor removal device for a roll packaging dust removal room. Background Technology

[0002] The odor removal device in the tobacco packaging dust removal room is a purification device that processes the tobacco dust filtered by the dust removal system and then discharges it into the atmosphere. The odor removal system consists of a main fan, a dosing pump, an auxiliary fan, a water pump, and solenoid valves. When the odor removal system starts running, it will turn on the main fan or the auxiliary fan to exhaust the filtered air, so that the air pressure in the duct is maintained at a set value (around -285pa). The two fans can be automatically or manually switched at timed intervals according to the specific needs of the system, realizing a one-in-one standby control scheme.

[0003] However, when dust removal equipment is added to the existing dust removal equipment in the roll packaging dust removal room, if the odor removal system is also operated, the workshop technicians found that with the addition of dust removal equipment, the air volume of the odor removal system is divided, resulting in insufficient air supply pressure, larger air pressure fluctuations, and intermittent surge phenomena. Utility Model Content

[0004] In view of this, this application provides an odor removal device for a roll packaging dust removal room to solve the problems of insufficient air supply pressure and intermittent surge in the existing odor removal system when dust removal equipment is added to the roll packaging dust removal room.

[0005] The first aspect of this application provides an odor removal device for a roll packaging dust removal room, comprising:

[0006] The output terminal of the wind pressure sensor is connected to the positive input terminal of comparator S1, and the negative input terminal of comparator S1 is connected to the reference voltage source Vref;

[0007] The output of the comparator S1 is connected to the input of the inverter D1, the output of the inverter D1 is connected to one input of the AND gate circuit T1, and the neutral point of the first fan starting circuit is connected to the other input of the AND gate circuit T1.

[0008] The output of the AND gate T1 is connected to the base of transistor Q1, which is an NPN transistor. The emitter of transistor Q1 is connected to one end of resistor R1, and the other end of resistor R1 is grounded. The collector of transistor Q1 is connected to one end of resistor R2, and the other end of resistor R2 is connected to one end of relay KM2. The other end of relay KM2 is connected to one phase of the second fan starting circuit to form a closed loop. At least one of the remaining two phases of the second fan starting circuit is equipped with the normally open contact KM2' of relay KM2.

[0009] The first aspect of this application provides an odor removal device for a roll packaging dust removal room, wherein the resistor R1 is a protective resistor.

[0010] A first aspect of this application provides an odor removal device for a roll packaging dust removal room, wherein the first fan starting circuit includes:

[0011] The live wires L1, L2 and L3 are connected to the fuse FU1 through the knife switch QS1, and then to the normally open contact KM1' of the relay KM1, and then to the fan M1 through the thermal relay FR1.

[0012] The live wire L1 is connected to one end of the thermal relay FR2 via the knife switch QS1. The other end of the thermal relay FR2 is connected to one end of the relay KMb1. The other end of the relay KMb1 is connected to the live wire L3.

[0013] The other end of the thermal relay FR2 is also connected to one end of the relay KM1. The other end of the relay KM1 is connected to one end of the normally open contact KMb1' of the relay KMb1. The other end of the normally open contact KMb1' of the relay KMb1 is connected to one end of the push-button switch SB2. The other end of the push-button switch SB2 is connected to one end of the normally closed switch SB1. The other end of the normally closed switch SB1 is connected to the live wire L2. The normally open contact KM1' of the litigation relay KM1 is connected in parallel with the push-button switch SB2.

[0014] The first aspect of this application provides an odor removal device for a roll-and-package dust removal room, wherein the connection point of the other end of the thermal relay FR2, one end of the relay KM1, and one end of the relay KMb1 is the neutral point of the first fan starting circuit.

[0015] The first aspect of this application provides an odor removal device for a roll packaging dust removal room, wherein the second fan starting circuit includes:

[0016] The live wires L1, L2 and L3 are connected to the fuse FU2 via the knife switch QS2, and then to the normally open contact KM2' of the relay KM2, and then to the fan M2 via the thermal relay FR3;

[0017] The live wire L1 is connected to one end of the thermal relay FR4 via the knife switch QS2, and the other end of the thermal relay FR4 is connected to the live wire L3.

[0018] The other end of the thermal relay FR4 is also connected to one end of the normally open contact KM2' of the relay KM2, and the other end of the normally open contact KM2' of the relay KM2 is connected to one end of the normally closed switch SB3, and the other end of the normally closed switch SB3 is connected to the live wire L2.

[0019] The first aspect of this application provides an odor removal device for a roll packaging dust removal room, wherein the other end of the relay KM2 is connected to the live wire L3.

[0020] The first aspect of this application provides an odor removal device for a roll packaging dust removal room, wherein the wind pressure sensor is a PTG503F wind pressure sensor.

[0021] Compared to existing technologies, this application provides an odor removal device for a roll-to-roll dust collection room (including: a first fan starting circuit, a second fan starting circuit, a wind pressure sensor, a comparator S1, an inverter D1, an AND gate circuit T1, and a transistor Q1). First, the first fan (main fan) is started via the first fan starting circuit. The wind pressure sensor detects the wind pressure and collects the corresponding voltage data. Then, the comparator S1 compares the corresponding voltage data from the wind pressure sensor with a reference voltage Vref (whose value corresponds to the voltage when the wind pressure sensor detects the pipe wind pressure at a set value). If the corresponding voltage from the wind pressure sensor is greater than the reference voltage Vref, the comparator S1 outputs a high level. After being inverted by the inverter D1, it becomes a low level. Although one input of the AND gate circuit T1 is high after the first fan starts, the output of the AND gate circuit T1 is low because the output of the inverter D1 is low. When the voltage is low, and transistor Q1 is an NPN transistor, it is not conducting, and its collector terminal vout output is almost zero. This causes relay KM2 to be de-energized, and its normally open contact KM2' to remain open. Consequently, the second fan starting circuit cannot start, meaning the second fan does not work. If the voltage corresponding to the wind pressure sensor is less than the reference voltage Vref, comparator S1 outputs a low level. After being inverted by inverter D1, it outputs a high level. When the first fan starts, it also outputs a high level. At this time, both inputs of AND gate T1 are high, and its output is high. Since transistor Q1 is an NPN transistor, it conducts, and its collector terminal vout outputs a normal voltage. Relay KM2 is energized, and its normally open contact KM2' closes. The second fan starting circuit starts normally. Through the combined operation of the first and second fans, the wind pressure in the pipeline is maintained at the set value.

[0022] Its beneficial effects are as follows: This utility model, by setting up a first fan starting circuit, a second fan starting circuit, a wind pressure sensor, a comparator S1, an inverter D1, an AND gate circuit T1, and a transistor Q1, firstly, the first fan starts working through the first fan starting circuit. Then, the wind pressure sensor monitors the wind pressure in the duct in real time. Through the combined action of the comparator S1, inverter D1, AND gate circuit T1, and transistor Q1, when the wind pressure in the duct is higher than the set value, it indicates that the air volume and supply pressure meet the requirements, and the second fan starting circuit is not energized, so the second fan does not start working. When the wind pressure in the duct is lower than the set value, it indicates that the air volume and supply pressure are insufficient, and the second fan starting circuit is energized, so the second fan starts normally, increasing the air volume and supply pressure for the odor removal system, so that the wind pressure in the duct can be maintained near the set value. This utility model solves the problem of insufficient supply pressure and intermittent surge in the existing odor removal system when dust removal equipment is added to the roll-pack dust removal room. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of an odor removal device for a roll packaging dust removal room provided in an embodiment of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. Example

[0027] As can be seen from the above background technology, the odor removal device in the tobacco packaging dust removal room is a purification device that discharges tobacco dust filtered by the dust removal system into the atmosphere after being processed by the odor removal system. The odor removal system consists of a main fan, a dosing pump, an auxiliary fan, a water pump, and a solenoid valve. When the odor removal system starts to run, the main fan or the auxiliary fan will be turned on to exhaust the filtered air, so that the air pressure in the duct is maintained at a set value (around -285pa). The two fans can be automatically or manually switched at timed intervals according to the specific needs of the system.

[0028] In the existing technology, when dust removal equipment is added to the original dust removal equipment in the roll packaging dust removal room, if the odor removal system is also operated, the workshop technicians found that as the dust removal equipment is added, the air volume of the odor removal system is divided, resulting in insufficient air supply pressure, larger air pressure fluctuation amplitude, and intermittent surge phenomenon.

[0029] Therefore, this application provides an odor removal device for a roll packaging dust removal room, such as... Figure 1 As shown, it includes:

[0030] The output terminal of the wind pressure sensor is connected to the positive input terminal of comparator S1, and the negative input terminal of comparator S1 is connected to the reference voltage source Vref;

[0031] The output of the comparator S1 is connected to the input of the inverter D1, the output of the inverter D1 is connected to one input of the AND gate circuit T1, and the neutral point of the first fan starting circuit is connected to the other input of the AND gate circuit T1.

[0032] The output of the AND gate T1 is connected to the base of transistor Q1, which is an NPN transistor. The emitter of transistor Q1 is connected to one end of resistor R1, and the other end of resistor R1 is grounded. The collector of transistor Q1 is connected to one end of resistor R2, and the other end of resistor R2 is connected to one end of relay KM2. The other end of relay KM2 is connected to one phase of the second fan starting circuit to form a closed loop. At least one of the remaining two phases of the second fan starting circuit is equipped with the normally open contact KM2' of relay KM2.

[0033] In some embodiments, the resistor R1 is a protective resistor.

[0034] In some embodiments, the first fan starting circuit includes:

[0035] The live wires L1, L2 and L3 are connected to the fuse FU1 through the knife switch QS1, and then to the normally open contact KM1' of the relay KM1, and then to the fan M1 through the thermal relay FR1.

[0036] The live wire L1 is connected to one end of the thermal relay FR2 via the knife switch QS1. The other end of the thermal relay FR2 is connected to one end of the relay KMb1. The other end of the relay KMb1 is connected to the live wire L3.

[0037] The other end of the thermal relay FR2 is also connected to one end of the relay KM1. The other end of the relay KM1 is connected to one end of the normally open contact KMb1' of the relay KMb1. The other end of the normally open contact KMb1' of the relay KMb1 is connected to one end of the push-button switch SB2. The other end of the push-button switch SB2 is connected to one end of the normally closed switch SB1. The other end of the normally closed switch SB1 is connected to the live wire L2. The normally open contact KM1' of the litigation relay KM1 is connected in parallel with the push-button switch SB2.

[0038] In some embodiments, the connection point of the other end of the thermal relay FR2, one end of the relay KM1, and one end of the relay KMb1 is the neutral point of the first fan starting circuit.

[0039] In some embodiments, the second fan starting circuit includes:

[0040] The live wires L1, L2 and L3 are connected to the fuse FU2 via the knife switch QS2, and then to the normally open contact KM2' of the relay KM2, and then to the fan M2 via the thermal relay FR3;

[0041] The live wire L1 is connected to one end of the thermal relay FR4 via the knife switch QS2, and the other end of the thermal relay FR4 is connected to the live wire L3.

[0042] The other end of the thermal relay FR4 is also connected to one end of the normally open contact KM2' of the relay KM2, and the other end of the normally open contact KM2' of the relay KM2 is connected to one end of the normally closed switch SB3, and the other end of the normally closed switch SB3 is connected to the live wire L2.

[0043] In some embodiments, the other end of the relay KM2 is connected to the live wire L3.

[0044] In some embodiments, the wind pressure sensor is a PTG503F wind pressure sensor.

[0045] Among them, the wind pressure sensor is a device used to measure gas pressure. Its working principle is mainly based on the response of the pressure-sensitive element to wind pressure. That is, the wind pressure acts on the pressure inlet of the sensor, and acts on the pressure-sensitive element through the pressure guide tube or directly. When the wind pressure changes, the sensitive element will deform or the resistance value will change, thereby causing a corresponding voltage change. Under different wind pressures, the voltage output by the wind pressure sensor will also be different.

[0046] The setting of the voltage value in the reference voltage source Vref is achieved by measuring the voltage data corresponding to the set wind pressure using a voltage sensor. This data can be found in the sensor manual or obtained through experimentation, and is a mature technology for those skilled in the art.

[0047] The wind pressure sensor used is the PTG503F wind pressure sensor, but other models such as the APGD100 wind pressure sensor or the HPT-8 wind pressure sensor can also be used. The specific limitations are not specified in this utility model.

[0048] Odor removal device working logic:

[0049] When the knife switch QS1 is closed, the relay KMb1 is energized, and its normally open contact KMb1' closes. Then, the push button switch SB2 is pressed. Since the normally open contact KMb1' is closed, the relay KM1 is energized, and its corresponding normally open contact KM1' closes. Since switch SB1 is a normally closed switch, the first fan M1 starts working and inputs the neutral point output voltage (high level) to one input terminal of the AND gate circuit T1.

[0050] The wind pressure sensor monitors the wind pressure in the pipeline and outputs the corresponding Vout voltage data. This Vout voltage is compared with the reference voltage Vref. If the voltage from the wind pressure sensor is greater than the reference voltage Vref, the comparator S1 outputs a high level. After being inverted by the inverter D1, it becomes a low level. Although one input of the AND gate T1 is high after the first fan starts, the output of the AND gate T1 is low because the inverter D1 outputs a low level. Since transistor Q1 is an NPN transistor, it is not conducting, and its collector terminal Vout output is almost zero. This causes relay KM2 to be de-energized, and its normally open contact KM2' does not close, preventing the second fan starting circuit from starting. The second fan (M2) starts when the first fan is not operating. If the voltage corresponding to the wind pressure sensor is less than the reference voltage Vref, comparator S1 outputs a low level. After being inverted by inverter D1, it outputs a high level. The first fan also outputs a high level after starting. At this time, both inputs of AND gate T1 are high, and its output is high. Since transistor Q1 is an NPN transistor, it conducts, and its collector terminal vout outputs a normal voltage. Relay KM2 is energized, and its normally open contact KM2' closes. Because switch SB3 is a normally closed switch, the second fan starting circuit starts normally. With the first fan M1 and the second fan M2 working together, the wind pressure in the pipeline is maintained near the set value. It should be noted that the knife switch QS2 in the second fan starting circuit is manually closed. When knife switch QS1 is closed, knife switch QS2 is closed simultaneously.

[0051] This embodiment solves the problems of insufficient air supply pressure and intermittent surge in the existing odor removal system when dust removal equipment is added to the roll packaging dust removal room, and the solution is more economical and practical.

[0052] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0053] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An odor removal device for a roll-and-package dust removal room, characterized in that, include: The output terminal of the wind pressure sensor is connected to the positive input terminal of comparator S1, and the negative input terminal of comparator S1 is connected to the reference voltage source Vref; The output of the comparator S1 is connected to the input of the inverter D1, the output of the inverter D1 is connected to one input of the AND gate circuit T1, and the neutral point of the first fan starting circuit is connected to the other input of the AND gate circuit T1. The output of the AND gate T1 is connected to the base of transistor Q1, which is an NPN transistor. The emitter of transistor Q1 is connected to one end of resistor R1, and the other end of resistor R1 is grounded. The collector of transistor Q1 is connected to one end of resistor R2, and the other end of resistor R2 is connected to one end of relay KM2. The other end of relay KM2 is connected to one phase of the second fan starting circuit to form a closed loop. At least one of the remaining two phases of the second fan starting circuit is equipped with the normally open contact KM2' of relay KM2.

2. The odor removal device for a roll packaging dust removal room according to claim 1, characterized in that, The resistor R1 is a protective resistor.

3. The odor removal device for a roll packaging dust removal room according to claim 1, characterized in that, The first fan starting circuit includes: The live wires L1, L2 and L3 are connected to the fuse FU1 through the knife switch QS1, and then to the normally open contact KM1' of the relay KM1, and then to the fan M1 through the thermal relay FR1. The live wire L1 is connected to one end of the thermal relay FR2 via the knife switch QS1. The other end of the thermal relay FR2 is connected to one end of the relay KMb1. The other end of the relay KMb1 is connected to the live wire L3. The other end of the thermal relay FR2 is also connected to one end of the relay KM1. The other end of the relay KM1 is connected to one end of the normally open contact KMb1' of the relay KMb1. The other end of the normally open contact KMb1' of the relay KMb1 is connected to one end of the push-button switch SB2. The other end of the push-button switch SB2 is connected to one end of the normally closed switch SB1. The other end of the normally closed switch SB1 is connected to the live wire L2. The normally open contact KM1' of the litigation relay KM1 is connected in parallel with the push-button switch SB2.

4. The odor removal device for a roll packaging dust removal room according to claim 3, characterized in that, The connection point of the other end of the thermal relay FR2, one end of the relay KM1, and one end of the relay KMb1 is the neutral point of the first fan starting circuit.

5. The odor removal device for a roll packaging dust removal room according to claim 1, characterized in that, The second fan starting circuit includes: The live wires L1, L2 and L3 are connected to the fuse FU2 through the knife switch QS2, and then to the normally open contact KM2' of the relay KM2, and then to the fan M2 through the thermal relay FR3; The live wire L1 is connected to one end of the thermal relay FR4 via the knife switch QS2, and the other end of the thermal relay FR4 is connected to the live wire L3. The other end of the thermal relay FR4 is also connected to one end of the normally open contact KM2' of the relay KM2, and the other end of the normally open contact KM2' of the relay KM2 is connected to one end of the normally closed switch SB3, and the other end of the normally closed switch SB3 is connected to the live wire L2.

6. The odor removal device for a roll packaging dust removal room according to claim 5, characterized in that, The other end of the relay KM2 is connected to the live wire L3.

7. The odor removal device for a roll packaging dust removal room according to claim 1, characterized in that, The wind pressure sensor used is the PTG503F wind pressure sensor.

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