Temperature and humidity compensation type air pollutant on-line monitoring gas pretreatment device

Abstract

The utility model provides a temperature and humidity compensation type air pollutant on-line monitoring gas pretreatment device, which relates to the technical field of air pollutant monitoring and comprises a protective shell, a revolving door matched with a group of hinges is mounted on one side of the protective shell, an upper support plate and a lower support plate are arranged on one side of the protective shell, and the revolving door is arranged on the other side of the protective shell. A sampling probe is installed above the upper supporting plate, and a collecting shell is installed between the upper supporting plate and the lower supporting plate. The locking structure is arranged, the linkage design of an unlocking plate, a positioning rod and a locking plate is adopted, unlocking and locking of the collecting shell can be rapidly completed by pressing the unlocking plate with one hand, compared with a traditional bolt fixing mode, the operation efficiency of collecting the shell is greatly improved, and meanwhile the loosening risk caused by traditional bolt locking is avoided through the arrangement of the locking structure.

Description

Technical Field

[0001] This utility model relates to the field of air pollutant monitoring technology, and in particular to a temperature and humidity compensated online air pollutant monitoring gas pretreatment device. Background Technology

[0002] In the field of online air pollutant monitoring, gas pretreatment devices are a crucial link in ensuring data accuracy. However, with the increasing standards of environmental monitoring and the growing requirements for precision in industrial process control, existing pretreatment technologies have revealed the following core shortcomings:

[0003] Changes in temperature and humidity in the air can significantly affect the detection accuracy of gas sensors. For example, when humidity is high, water vapor is more likely to condense on the sensor surface, which can lead to a decrease in sensor sensitivity and measurement deviation. In addition, changes in temperature and humidity can affect the movement rate of gas molecules and the chemical reaction balance, which can cause errors in the monitoring results. Furthermore, impurities can contaminate the sensor and shorten its lifespan.

[0004] Existing devices mostly use a bolt-fixed structure for the collection housing. Special tools are required for the installation and disassembly of the collection housing. When cleaning particulate matter and installing the collection housing, the protective shell, filter screen and heating components need to be removed in sequence. The operation is complicated and can easily damage precision parts. In addition, the bolt connection is prone to loosening under long-term vibration, which reduces the ease of operation of the collection housing and the stability of impurity collection. Utility Model Content

[0005] This utility model relates to a temperature and humidity compensated online monitoring gas pretreatment device for air pollutants. A sampling probe extracts an air sample, which enters the collection housing through an air inlet. Large particulate impurities in the air sample are intercepted by a filter and fall to the bottom of the collection housing. The pre-filtered air then passes through a heating sleeve. A humidity sensor monitors the humidity in real time. If the humidity exceeds a threshold, the controller activates the heating sleeve to heat the air to a set temperature, removing moisture. If the humidity is normal, the air directly passes through the heating sleeve into subsequent monitoring equipment.

[0006] The pretreated air enters the controller through the ventilation holes on the partition and is compared and analyzed with the built-in standard gas.

[0007] This utility model provides a temperature and humidity compensated online monitoring gas pretreatment device for air pollutants, specifically including: a protective shell, a rotating door installed on one side of the protective shell with a hinge, an upper support plate and a lower support plate on one side of the protective shell, a sampling probe installed above the upper support plate, a collection shell installed between the upper and lower support plates, a handle on one side of the collection shell, an unlocking plate installed inside the handle, a positioning block installed between the lower support plate and the collection shell, a heating sleeve, a humidity sensor and a controller installed inside the protective shell, and a junction box installed outside the protective shell.

[0008] Furthermore, an inclined surface is provided above the unlocking plate, two positioning rods are installed on one side of the unlocking plate, a locking plate is installed between the two positioning rods, and two sliding holes are opened above the locking plate, through which the positioning rods pass.

[0009] Furthermore, the locking plate has an L-shaped structure, and a locking groove is opened in the middle of one side of the lower support plate. The locking groove has a rectangular structure, and the bottom of the locking plate extends into the interior of the locking groove. The unlocking plate, the positioning rod, and the locking plate cooperate with each other to form a locking structure.

[0010] Furthermore, a mounting hole is opened on one side of the protective housing between the upper support plate and the lower support plate, and a filter screen is installed inside the mounting hole.

[0011] Furthermore, a sealing ring is installed on one side of the heating sleeve, and one side of the sealing ring contacts the inner side of the protective shell, with the sealing ring and the filter screen aligned.

[0012] Furthermore, a partition is provided on the inner side of the protective housing, with a mounting hole in the middle of the partition and a set of ventilation holes on one side of the humidity sensor, and the mounting hole and the ventilation holes are connected.

[0013] Furthermore, the heating sleeve is provided with two stabilizing rods on one side, and a set of bolt mounting holes are opened on one side of each stabilizing rod. A positioning groove is opened on the inner side of the protective shell. The positioning groove has a side U-shaped structure, and one of the stabilizing rods passes through the interior of the positioning groove.

[0014] Furthermore, a vertical sliding post is provided at the bottom of the positioning block, and a positioning groove is opened on each side of the sliding post. The positioning groove has an arc structure. A sliding hole corresponding to the sliding post is opened in the middle of the lower support plate. The sliding post passes through the interior of the sliding hole, and a support spring is installed on the outer side of the sliding post.

[0015] Furthermore, a positioning groove corresponding to the positioning block is opened at the bottom of the collection housing. The positioning groove has a rectangular structure, and the positioning block extends into the interior of the positioning groove. An air inlet is opened at the top of the collection housing, which is connected to the sampling probe. A horizontal air outlet sleeve is provided on one side of the collection housing, and the air outlet sleeve is aligned with the filter screen.

[0016] This utility model provides a temperature and humidity compensated online monitoring gas pretreatment device for air pollutants, which has the following beneficial effects:

[0017] This invention incorporates a humidity sensor to monitor air humidity in real time. When the humidity exceeds the standard, the controller automatically activates a heating sleeve to heat the air, rapidly evaporating the moisture and preventing condensation interference with the sensor.

[0018] The heating sleeve and sealing ring work together to form a closed-loop temperature and humidity compensation path. External air can pass through the filter and the inside of the heating sleeve in sequence, so that the heating sleeve can effectively compensate for the temperature and humidity of the air. The closed-loop control of the humidity sensor and controller can dynamically adapt to changes in environmental temperature and humidity, such as high humidity in the rainy season and low temperature in winter.

[0019] The locking structure employs a linkage design of the unlocking plate, positioning rod, and locking plate. Pressing the unlocking plate with one hand allows for quick unlocking and locking of the collection shell, significantly improving operational efficiency compared to traditional bolt-fixing methods. At the same time, the locking structure avoids the risk of loosening caused by traditional bolt locking.

[0020] The filter screen intercepts airborne particles, and the collection housing stores the intercepted particles, reducing contamination of the heating sleeve, sensor, and controller, and extending their service life.

[0021] This invention solves the problems of insufficient accuracy, cumbersome maintenance, and poor adaptability of existing gas pretreatment devices through three-dimensional innovations: intelligent temperature and humidity compensation, rapid disassembly and maintenance, and multiple filtration protection. It has significant technical advantages and promotional value in the fields of environmental monitoring and industrial process control. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0023] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0024] In the attached diagram:

[0025] Figure 1 A schematic diagram of the overall assembled axonal structure of this utility model is shown;

[0026] Figure 2 A schematic diagram of the axle side structure of the revolving door of this utility model after it is opened is shown;

[0027] Figure 3 This utility model illustrates Figure 1 A schematic diagram of the axonal structure from an elevation viewpoint;

[0028] Figure 4 The diagram shows an axial side view of the cross-sectional structure of the protective shell and the collection shell of this utility model;

[0029] Figure 5 This utility model illustrates Figure 4 Front view structural diagram;

[0030] Figure 6 A schematic diagram of a partially cut axial side structure of this utility model is shown;

[0031] Figure 7 A schematic diagram of the axial side structure of the protective shell cross-section of this utility model is shown;

[0032] Figure 8 The diagram shows an axial side view of the protective housing, filter screen, and heating sleeve of this utility model.

[0033] Figure 9 The diagram shows an axial side view of the cross-sectional structure of the collection housing and locking structure of this utility model.

[0034] List of reference numerals

[0035] 1. Protective housing; 101. Revolving door; 102. Upper support plate; 103. Lower support plate; 104. Filter screen;

[0036] 2. Sampling probe;

[0037] 3. Collection housing; 301. Handle;

[0038] 4. Locking structure; 401. Unlocking plate; 402. Positioning rod; 403. Locking plate;

[0039] 5. Positioning block; 501. Sliding column;

[0040] 6. Heating sleeve; 601. Stabilizing rod;

[0041] 7. Junction box;

[0042] 8. Humidity sensor;

[0043] 9. Controller. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0045] Example 1: Please refer to Figures 1 to 9 :

[0046] This utility model proposes a temperature and humidity compensated online monitoring gas pretreatment device for air pollutants, including: a protective shell 1, a rotating door 101 installed on one side of the protective shell 1 with a hinge, an upper support plate 102 and a lower support plate 103 on one side of the protective shell 1, and a mounting hole between the upper support plate 102 and the lower support plate 103 on one side of the protective shell 1. A filter screen 104 is installed inside the mounting hole. The mounting hole hides and positions the installation position of the filter screen 104. The filter screen 104 removes larger dust and particulate matter in the air.

[0047] In this embodiment, a sampling probe 2 is installed above the upper support plate 102. The specific model of the sampling probe 2 is selected from existing conventional technologies according to actual needs. A collection housing 3 is installed between the upper support plate 102 and the lower support plate 103. A handle 301 is provided on one side of the collection housing 3. An unlocking plate 401 is installed on the inner side of the handle 301. An inclined surface is provided on the upper part of the unlocking plate 401. The inclined surface facilitates the operator to press the unlocking plate 401 to one side. Two positioning rods 402 are installed on one side of the unlocking plate 401. Threads are machined on one side of the positioning rods 402 according to actual needs. The thread pitch is also machined according to actual needs so that the positioning rods 402 can be stably connected to the unlocking plate 401 with the thread. A locking plate 403 is installed between the two positioning rods 402. Two sliding holes are provided at the top of 403. The positioning rod 402 passes through the inside of the sliding holes. The two positioning rods 402 cooperate with each other to position the unlocking plate 401 and the locking plate 403 circumferentially. Therefore, when the operator presses the unlocking plate 401, the locking plate 403 is moved outward by force. Thus, the locking and unlocking of the collection housing 3 can be quickly switched by pressing with one hand, which significantly improves the installation and maintenance efficiency of the collection housing 3. The locking plate 403 has an L-shaped structure. A locking groove is provided in the middle of one side of the lower support plate 103. The locking groove has a rectangular structure. The bottom of the locking plate 403 extends into the inside of the locking groove. The unlocking plate 401, the positioning rod 402, and the locking plate 403 cooperate with each other to form a locking structure 4 to quickly lock the installation position of the collection housing 3 and ensure the stability of the collection housing 3 in a vibration environment.

[0048] In this embodiment, a positioning block 5 is installed between the lower support plate 103 and the collecting housing 3. A vertical sliding post 501 is provided at the bottom of the positioning block 5. A positioning groove is formed on each side of the sliding post 501. The positioning grooves are arc-shaped. A sliding hole corresponding to the sliding post 501 is formed in the middle of the lower support plate 103. The sliding post 501 passes through the interior of the sliding hole. The positioning grooves, in conjunction with the sliding post 501, position the positioning block 5 circumferentially, allowing the positioning block 5 to move stably up and down. A support spring is installed on the outer side of the sliding post 501. The support spring pushes the positioning block 5 upwards to reset, ensuring the stability of the collecting housing 3 installation. A positioning groove is formed at the bottom of the collecting housing 3. A positioning groove corresponding to the positioning block 5 is provided. The positioning groove has a rectangular structure. The positioning block 5 extends into the interior of the positioning groove. The positioning block 5, together with the support spring, quickly positions the installation position and angle of the collection housing 3. An air inlet is opened at the top of the collection housing 3. The air inlet is connected to the sampling probe 2. The air sample can enter the interior of the collection housing 3 through the sampling probe 2. A horizontal air outlet sleeve is provided on one side of the collection housing 3. The air outlet sleeve is aligned with the filter screen 104. Larger impurities and dust in the air sample are blocked by the filter screen 104 and fall into the interior of the collection housing 3 for collection. When the amount of impurities and dust collected reaches the required amount, the collection housing 3 is removed for impurity and dust treatment.

[0049] In this embodiment, a heating sleeve 6, a humidity sensor 8, and a controller 9 are installed on the inner side of the protective housing 1. The specific models of the heating sleeve 6, humidity sensor 8, and controller 9 are selected from existing conventional technologies according to actual needs. The heating sleeve 6 is selected as a conventional resistance heating structure, or a conventional bolt structure, or a conventional cylindrical sleeve structure, as long as it can regulate the temperature and humidity of the air. A sealing ring is installed on one side of the heating sleeve 6. The sealing ring is made of a high-temperature resistant material from the prior art to prevent deformation of the sealing ring after the heating sleeve 6 generates heat. One side of the sealing ring contacts the inner side of the protective housing 1, and the sealing ring and the filter screen 104 are aligned, so the external air can pass through the filter screen 104 in sequence. The interior of the heating sleeve 6 allows for effective temperature and humidity compensation of the air. Two stabilizing rods 601 are provided on one side of the heating sleeve 6, and a set of bolt mounting holes are opened on one side of each stabilizing rod 601. The bolt mounting holes are positioned according to actual needs to install matching bolts. After the bolts are installed, the installation position of the heating sleeve 6 is stabilized. The power cord of the heating sleeve 6 is passed through the interior of the stabilizing rod 601, and the outward-extending power cord is electrically connected to the controller 9. A positioning groove is opened on the inner side of the protective housing 1. The positioning groove has a side U-shaped structure, and one of the stabilizing rods 601 passes through the interior of the positioning groove. The positioning groove quickly positions the heating sleeve 6 and the stabilizing rod 601, ensuring the consistency of the installation position of the heating sleeve 6 and avoiding uneven heating caused by installation deviation.

[0050] In this embodiment, a junction box 7 is installed on the outer side of the protective housing 1. The junction box 7 protects the wiring position of the heating sleeve 6 and electrically connects the sampling probe 2, the heating sleeve 6, and the controller 9, respectively. This allows the controller 9 to control the heating temperature of the heating sleeve 6, forming an online air monitoring loop with the sampling probe 2 and the controller 9. The humidity sensor 8 detects the humidity in the air and transmits the detected signal to the controller 9. When there is moisture in the air, the controller 9 controls the heating sleeve 6 to generate heat, thus removing the moisture from the air. A partition is provided on the inner side of the protective housing 1, with a mounting hole in the middle. A set of ventilation holes is provided on one side of the humidity sensor 8, and the mounting hole and ventilation holes are connected. The pre-treated air enters the interior of the controller 9 through the ventilation holes. The air processing steps of the controller 9 are conventional steps in the prior art. Therefore, the design of the ventilation holes can balance the airflow speed and improve the sensitivity of real-time air monitoring.

[0051] Example 2, based on Example 1, such as Figures 1-3As shown, a set of support legs is provided at the bottom of the protective housing 1. A set of bolt mounting holes are opened at the bottom of the support legs. Anchor bolts are installed according to actual needs by positioning the bolt mounting holes. After the anchor bolts are installed, the protective housing 1 can be leveled.

[0052] The working principle of this embodiment:

[0053] Place the protective housing 1 on a flat surface and adjust its level using the anchor bolts at the bottom of the support legs. This step is described in Example 2.

[0054] Open junction box 7, connect the power cord of heating sleeve 6 to controller 9, turn on external power, check if the display screen of controller 9 is displaying normally, fix sampling probe 2 above upper support plate 102, and ensure that the air inlet faces the pollution-free area. Connect the signal line of sampling probe 2 to controller 9, press unlock plate 401, and make locking plate 403 retract from locking groove of lower support plate 103;

[0055] Align the air inlet of the collection housing 3 with the air outlet of the sampling probe 2, press down to make the positioning block 5 embed into the positioning groove at the bottom of the collection housing 3, release the unlocking plate 401, and the locking plate 403 will automatically snap into the locking groove to complete the quick locking of the collection housing 3; insert the filter screen 104 through the mounting hole on the side of the protective housing 1.

[0056] Turn on the power to the controller 9. The system will automatically perform a self-test to check the working status of the heating sleeve 6, humidity sensor 8 and sampling probe 2. This is a standard existing operating procedure.

[0057] Sampling probe 2 draws an air sample, which enters the collection housing 3 through the air inlet. Large particulate impurities in the air sample are intercepted by filter screen 104 and fall to the bottom of collection housing 3. The pre-filtered air then passes through heating sleeve 6. Humidity sensor 8 monitors the humidity in real time. If the humidity exceeds the threshold, controller 9 activates heating sleeve 6 to heat the air to the set temperature and remove moisture. If the humidity is normal, the air directly passes through heating sleeve 6 into subsequent monitoring equipment.

[0058] The pretreated air enters the controller 9 through the ventilation holes on the partition and is compared and analyzed with the built-in standard gas.

[0059] According to actual needs, press the unlocking plate 401 to disassemble the collection housing 3, clean the impurities accumulated inside the collection housing 3, clean the filter screen 104 regularly, and check the sealing ring of the heating sleeve 6 for aging every month.

[0060] Through the above steps, the device can achieve efficient preprocessing of air samples, significantly improving the accuracy and stability of online monitoring data.

Claims

1. A temperature and humidity compensated online monitoring gas pretreatment device for air pollutants, comprising: The protective housing (1), the collection housing (3) and the humidity sensor (8) are provided. A rotating door (101) is installed on one side of the protective housing (1) in conjunction with a combination of pages. An upper support plate (102) and a lower support plate (103) are provided on one side of the protective housing (1). A sampling probe (2) is installed above the upper support plate (102). The characteristic is that a collection housing (3) is installed between the upper support plate (102) and the lower support plate (103). A handle (301) is provided on one side of the collection housing (3). An unlocking plate (401) is installed on the inner side of the handle (301). A positioning block (5) is installed between the lower support plate (103) and the collection housing (3). A heating sleeve (6), a humidity sensor (8) and a controller (9) are installed on the inner side of the protective housing (1). A junction box (7) is installed on the outer side of the protective housing (1).

2. The temperature and humidity compensated online monitoring gas pretreatment device for air pollutants according to claim 1, characterized in that, An inclined surface is provided above the unlocking plate (401). Two positioning rods (402) are installed on one side of the unlocking plate (401). A locking plate (403) is installed between the two positioning rods (402). Two sliding holes are opened above the locking plate (403), and the positioning rods (402) pass through the interior of the sliding holes.

3. The temperature and humidity compensated online monitoring gas pretreatment device for air pollutants according to claim 1, characterized in that, A locking groove is opened in the middle of one side of the lower support plate (103), and the bottom of the locking plate (403) extends into the interior of the locking groove. The unlocking plate (401), the positioning rod (402), and the locking plate (403) cooperate with each other to form a locking structure (4).

4. The temperature and humidity compensated online monitoring gas pretreatment device for air pollutants according to claim 1, characterized in that, A mounting hole is opened on one side of the protective housing (1) between the upper support plate (102) and the lower support plate (103), and a filter screen (104) is installed inside the mounting hole.

5. The temperature and humidity compensated online monitoring gas pretreatment device for air pollutants according to claim 1, characterized in that, A sealing ring is installed on one side of the heating sleeve (6), and one side of the sealing ring is in contact with the inner side of the protective shell (1). The sealing ring and the filter screen (104) are aligned.

6. The temperature and humidity compensated online monitoring gas pretreatment device for air pollutants according to claim 1, characterized in that, The protective housing (1) has a partition on its inner side, and a mounting hole is opened in the middle of the partition. A set of ventilation holes is opened on one side of the humidity sensor (8), and the mounting hole and the ventilation holes are connected.

7. The temperature and humidity compensated online monitoring gas pretreatment device for air pollutants according to claim 1, characterized in that, Two stabilizing rods (601) are provided on one side of the heating sleeve (6). A set of bolt mounting holes are opened on one side of the stabilizing rods (601). A positioning groove is opened on the inner side of the protective shell (1). The positioning groove is a side U-shaped structure. One of the stabilizing rods (601) passes through the inside of the positioning groove.

8. The temperature and humidity compensated online monitoring gas pretreatment device for air pollutants according to claim 1, characterized in that, The bottom of the positioning block (5) is provided with a vertical sliding column (501). A positioning groove is opened on both sides of the sliding column (501). The positioning groove is an arc structure. A sliding hole corresponding to the sliding column (501) is opened in the middle of the lower support plate (103). The sliding column (501) passes through the inside of the sliding hole. A support spring is installed on the outside of the sliding column (501).

9. The temperature and humidity compensated online monitoring gas pretreatment device for air pollutants according to claim 1, characterized in that, The bottom of the collection housing (3) is provided with a positioning groove corresponding to the positioning block (5). The positioning groove is rectangular and the positioning block (5) extends into the interior of the positioning groove. An air inlet is provided at the top of the collection housing (3). The air inlet is connected to the sampling probe (2). A horizontal air outlet sleeve is provided on one side of the collection housing (3). The air outlet sleeve is aligned with the filter screen (104).

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