CN218726856U - Device for indicating service life of filter element - Google Patents

Abstract

The utility model discloses a device for instructing filter element life belongs to gaseous check out test set technical field. Including the casing with set up in functional module in the casing, functional module is including the sensor that is used for detecting gaseous quality, be used for instructing the instruction subassembly and the communication subassembly of sensor testing result, and the casing is equipped with the interface and is used for connecting gas filtering component. The utility model discloses a device sets up between respirator and filtering component, can carry out effectual detection to the air quality after being filtered by filtering component, when the discovery is less than safe threshold value to the air quality after being filtered by filtering component, can indicate through instruction subassembly and communication subassembly to the filtering component who updates guarantees user's safety.

Description

Device for indicating service life of filter element

Technical Field

The utility model belongs to the technical field of gaseous check out test set, be a device for instructing filter element life particularly.

Background

Many work environments require respirators to be worn by workers for respiratory protection, such as coal miners, welders, chemical plant workers, and other workers working in environments where air contaminants are present. In environments where toxic and harmful gases or vapors are present, respirators fitted with canisters as filter elements are often worn, but if a spent canister is not replaced in time, harm to the body may result from inhalation of toxic and harmful gases/vapors that exceed occupational exposure limits. In environments where particulate contaminants are present, respirators equipped with particulate filter cartridges as the filter element are often worn, and the resistance of such cartridges increases with time, and if the cartridges are not replaced in a timely manner, they may become fatigued or compromised by cardiopulmonary function due to wearing a respirator with too high a resistance. Therefore, timely replacement of the canister and the cotton/dust filter cartridge of the respirator is very important to the safety and health of the wearer.

For environments where cartridges are used, some enterprises may determine their average concentration level by sampling and analyzing the contaminants at the workplace, and accordingly, may schedule a cartridge change with the use of cartridge life software provided by the respirator manufacturer. However, the actual pollutant concentration level in the workplace is not stable, the respiratory frequency and the respiratory capacity of each wearer are not consistent, and meanwhile, the performance of the toxicity filtering box is also influenced by environmental factors such as temperature and humidity, so that the actual use condition is hardly reflected truly and effectively by setting a replacement cycle according to the service life software of the toxicity filtering box, and the toxicity filtering box is hardly replaced before the service life is finished. In order to monitor the Service Life of the canister, some manufacturers have introduced an End-of-Service-Life Indicator (ESLI). ESLI is generally classified into two major categories, passive and active. The passive ESLI is formed by introducing a material such as test paper coated with a chemical indicator on the side surface of the toxin filtering box, and when the toxin filtering box is about to be penetrated, the test paper material changes color to remind a wearer of replacing the toxin filtering box. However, this method can only satisfy the requirement of few working environments because the applicable gas range is small and the wearer is required to observe at any time to affect the working efficiency. Active ESLI typically monitors the presence of contaminants by means of sensors built into the canister or into the respirator, and prompts the user to replace the canister when the concentration of contaminants exceeds a set safe concentration. However, the sensors built into the respirator take up space, which affects the breathing space and the wearing comfort. The design of the sensor built in the poison filtering box causes the replacement cost of the poison filtering box to be extremely high, and the poison filtering box is difficult to be applied to industrial places on a large scale.

For environments using particulate filter cotton or dust filter boxes, most enterprises do not have a clear replacement plan, and usually determine whether replacement is needed or not according to the wearing feeling of users, or forcibly set a replacement period. This can result in frequent replacement resulting in waste, or prolonged non-replacement resulting in excessive or impaired cardiopulmonary function for the user.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to solve the problem that the prior respirator lacks the detection device of effective time, thereby the safety problem caused by failure of the respirator easily appears.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a device for instructing filter element life, including the casing with set up in functional module in the casing, functional module includes the empty gas detection survey sensor, is used for instructing the instruction subassembly and the communication subassembly of sensor testing result, the casing is equipped with the interface and is used for connecting gas filtering component.

Preferably, the interface of the housing is connected to the air outlet end of the filter assembly.

Preferably, the air detection sensor is a gas pressure sensor and/or a gas sensor, and the gas sensor is one or two of an electrochemical sensor and a MEMS metal oxide semiconductor sensor.

Preferably, the indicating component is one or more of a speaker, an LED and a vibration motor.

Preferably, the communication assembly is in Bluetooth, wifi, 3G, 4G or radio frequency signal transmission.

Preferably, the shell is also provided with a battery assembly for supplying power to the rest of the components,

preferably, the shell comprises a first interface and a second interface, wherein any one of the first interface and the second interface is an air inlet, the air inlet is arranged close to the sensor, any one of the first interface and the second interface is an air outlet, and the air outlet is communicated with the respirator.

Preferably, a sealing layer is arranged in the shell.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

the utility model discloses a device for instructing filter element life, including the casing with set up in functional module in the casing, functional module includes the empty gas detection survey sensor, is used for instructing the instruction subassembly and the communication subassembly of empty gas detection survey sensor testing result, and the casing is equipped with the interface and is used for connecting gas filtering component. The device sets up between respirator and filtering component, can carry out effectual detection to the air quality after being filtered by filtering component, when the discovery is less than the safe threshold value to the air quality after being filtered by filtering component, can indicate through instruction subassembly and communication subassembly to the filtering component who updates guarantees user's safety.

Drawings

FIG. 1 is a schematic view of a device for indicating the service life of a filter element according to the present invention

Fig. 2 is a schematic structural diagram of a functional module of the present invention;

FIG. 3 is a schematic structural view of the filter assembly of the present invention;

fig. 4 is a schematic structural view of the respirator of the present invention.

The reference numerals in the schematic drawings illustrate:

100. a housing; 110. an interface I; 120. interface two; 200. a functional module; 210. an air detection sensor; 220. an indicating component; 230. a communication component; 300. a filter assembly; 400. a respirator is provided.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

Referring to fig. 1-4, the device for indicating a service life of a filter element of the present embodiment includes a housing 100 and a function module 200 disposed in the housing 100, wherein the function module 200 includes an air detection sensor 210, an indicating component 220 for indicating a detection result of the air detection sensor 210, and a communication component 230, and the housing 100 is provided with an interface for connecting an air filter component 300. The device of this embodiment is disposed between the respirator 400 and the filter assembly 300, and can effectively detect the air quality filtered by the filter assembly 300, and when the air quality filtered by the filter assembly 300 is found to be lower than the safety threshold, the device can prompt through the indicating assembly 220 and the communication assembly 230, so as to replace the new filter assembly 300 and ensure the safety of the user.

The interface of the casing 100 is connected to the air outlet end of the filter assembly 300, the casing 100 comprises a first interface 110 and a second interface 120, any one of the first interface 110 and the second interface 120 is an air inlet, the air inlet is close to the air detection sensor 210, any one of the first interface 110 and the second interface 120 is an air outlet, the air outlet is communicated with the respirator 400, good contact between the air detection sensor 210 and air exhausted from the filter assembly 300 can be ensured, and the detection accuracy and sensitivity are ensured. A controller is provided in the indication assembly 220 for setting an alarm threshold and making a determination.

The air detection sensor 210 is a gas pressure sensor and/or a gas sensor, and the gas sensor is one or two of an electrochemical sensor and a MEMS metal oxide semiconductor sensor. The indicating component 220 is one or more of a speaker, an LED, and a vibration motor. The communication component 230 is a bluetooth, wifi, 3G, 4G or radio frequency signal transmission. The housing 100 is also provided with a battery assembly for powering the remaining components. A sealing layer is provided in the housing 100.

For environments using a canister: the alarm concentration C of the corresponding pollutant gas can be set, and when the concentration of the pollutant gas in the air flow reaches the concentration C after passing through the toxicity filtering box, an alarm signal is started to prompt the change of the toxicity filtering box.

For environments using a particulate filter cotton/dust box: can set for pressure sensor's pressure variation threshold value P, pressure sensor can real-time supervision wearer filter element back pressure's change when breathing gas, and when the change value was greater than P, start alarm signal, the suggestion was changed and is strained the filter pulp/dust filter box.

To the environment that uses poison filtering box and particulate matter to filter cotton/dust filtering box simultaneously and carry out the dust poison protection: the gas alarm concentration C and the pressure change threshold P may be set simultaneously as needed, and when either reaches the set value, an alarm signal is activated to prompt replacement of the filter element 300.

The above-mentioned embodiments only express a certain implementation manner of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (8)

1. A device for indicating the useful life of a filter element, characterized by: the air filter comprises a shell (100) and a functional module (200) arranged in the shell (100), wherein the functional module (200) comprises an air detection sensor (210), an indicating component (220) used for indicating a detection result of the air detection sensor (210) and a communication component (230), and the shell (100) is provided with an interface used for being connected with an air filter component (300).

2. A device for indicating the useful life of a filter element as claimed in claim 1, wherein: the interface of the shell (100) is connected with the air outlet end of the filter assembly (300).

3. A device for indicating the useful life of a filter element as claimed in claim 1, wherein: the air detection sensor (210) is a gas pressure sensor and/or a gas sensor, and the gas sensor is one or two of an electrochemical sensor and a MEMS metal oxide semiconductor sensor.

4. A device for indicating the useful life of a filter element as claimed in claim 1, wherein: the indicating component (220) is one or more of a speaker, an LED, and a vibration motor.

5. A device for indicating the useful life of a filter element as claimed in claim 1, wherein: the communication component (230) is used for transmitting Bluetooth, wifi, 3G, 4G or radio frequency signals.

6. A device for indicating the useful life of a filter element as claimed in claim 1, wherein: the shell (100) is also provided with a battery assembly for supplying power to the rest of the assemblies.

7. A device for indicating the useful life of a filter element as claimed in claim 1, wherein: the shell (100) comprises a first interface (110) and a second interface (120), wherein any one of the first interface (110) and the second interface (120) is an air inlet, the air inlet is arranged close to the sensor (210), any one of the first interface (110) and the second interface (120) is an air outlet, and the air outlet is communicated with the respirator (400).

8. A device for indicating the useful life of a filter element as claimed in claim 1, wherein: a sealing layer is arranged in the shell (100).

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