CN-121971931-A - Intelligent automatic membrane changer for gas collection

CN121971931ACN 121971931 ACN121971931 ACN 121971931ACN-121971931-A

Abstract

The invention provides an intelligent automatic membrane changer for gas collection, which belongs to the technical field of environmental monitoring and comprises a seat body, a gas path part, a circuit board, a trigger part and a driving control assembly. An air inlet channel, a plurality of filtering channels and an air outlet channel are formed in the base body. Each filtering gas circuit is mutually independent and communicated with the air inlet gas circuit. And each filter gas path is provided with a filter membrane. The air passage part is rotatably arranged on the seat body. The air path piece is always communicated with the air outlet air path, and the air outlets of the filtering air paths are distributed along the rotating path of the air path piece, so that the air path piece can rotate to be communicated with any filtering air path. The circuit board has a plurality of contacts that, contact and filtering gas path the air outlets are in one-to-one correspondence. The trigger piece is arranged on the air path piece and used for rotating along with the air path piece and forming a conducting loop when contacting with the contact. The driving control assembly is in transmission connection with the air path part and is electrically connected with the circuit board and the trigger part. The intelligent automatic membrane changer for gas collection provided by the invention avoids inaccurate positions caused by rotation deviation.

Inventors

FU GUOYIN
ZHANG ZHIHAO
MA JINGJIN
WANG QIANG
ZHANG RUNLIANG
LIU JIANZHI
QU XIAOHU
WANG YAN
ZHAO ZHENG
CHEN XIAOFAN
Qi Xiangshuai

Assignees

河北先河环保科技股份有限公司
河北先进环保产业创新中心有限公司

Dates

Publication Date: 20260505
Application Date: 20260204

Claims (10)

1. Intelligent automatic membrane ware that trades of gas acquisition, its characterized in that includes: The filter comprises a seat body (10), wherein an air inlet channel (11), a plurality of filter air channels (13) and an air outlet channel (14) are formed in the seat body, the filter air channels (13) are mutually independent and are communicated with the air inlet channel (11), and filter membranes (20) are arranged on the filter air channels (13); The air channel piece is rotationally arranged on the base body (10), the air channel piece is always communicated with the air outlet air channel (14), and the air outlets of the filtering air channels (13) are distributed along the rotating path of the air channel piece so that the air channel piece can rotate to be communicated with any filtering air channel (13); the circuit board (30) is provided with a plurality of contacts (31), and the contacts (31) are in one-to-one correspondence with the air outlets of the filtering air paths (13); the trigger piece (32) is arranged on the air path piece, is used for rotating along with the air path piece and forms a conducting loop when contacting with the contact (31); the driving control assembly is in transmission connection with the air passage part and is electrically connected with the circuit board (30) and the trigger part (32) and used for controlling the air passage part to stop rotating when the conduction loop is identified; wherein friction damping exists between the air path part and the seat body (10) so as to inhibit inertial overshoot when the air path part stops rotating.
2. The intelligent automatic membrane changer for gas collection of claim 1, wherein the gas path member comprises: The road changing disc (40) is rotatably arranged on the base body (10); the first elastic piece (41) is arranged between the road changing disc (40) and the base body (10) and is used for pushing the road changing disc (40) to be attached to the base body (10) so as to generate friction damping when the road changing disc (40) rotates; The gas outlet of the filtering gas circuit (13) is distributed along the rotating path of the gas exchange plate (40), so that the gas exchange plate (40) can rotate to the position where the gas communication gas circuit (42) is communicated with any filtering gas circuit (13).
3. The intelligent automatic membrane changer for gas collection according to claim 2, wherein the base body (10) is provided with a containing cavity (15), and the containing cavity (15) is simultaneously communicated with the gas outlet of each filtering gas channel (13) and the gas inlet of the gas outlet gas channel (14); The road changing plate (40) is located in the accommodating cavity (15), and the road changing plate (40) comprises: The rotary table (401) is provided with a matching surface (4011) which is attached to the wall surface of the accommodating cavity (15) to form a dynamic sealing interface, the matching surface (4011) covers the air outlet of each filtering air channel (13) and the air inlet of the air outlet air channel (14), the matching surface (4011) is provided with a communication groove (4012), the communication groove (4012) is always communicated with the air inlet of the air outlet air channel (14), and the wall surface of the communication groove (4012) and the wall surface of the accommodating cavity (15) enclose the communication air channel (42).
4. A gas-collecting intelligent auto-change membrane device according to claim 3, characterized in that the change-over disc (40) further comprises: the connecting seat (402) is clamped on the rotary table (401) and is rotatably arranged on the seat body (10) through the plane thrust ball bearing (403), and the first elastic piece (41) is arranged between the seat body (10) and the plane thrust ball bearing (403).
5. The intelligent gas collection type automatic membrane changer of claim 4, wherein the gas path member further comprises: the first gear (404) is clamped on the connecting seat (402); the trigger (32) is arranged on the first gear (404); the drive control assembly includes: A second gear (51) rotatably provided on the base (10) and engaged with the first gear (404); and the motor (52) is fixedly arranged on the base body (10), and the output end of the motor is connected with the second gear (51).
6. The intelligent automatic membrane changer for gas collection according to claim 3, wherein the accommodating cavity (15) is provided with a plurality of flaring slots (151), the flaring slots (151) are in one-to-one correspondence with the gas outlets of the filtering gas paths (13) and are mutually communicated, and the notch of the flaring slot (151) extends along the rotating path of the communicating slot (4012) so that the communicating slot (4012) can be communicated through the corresponding flaring slot (151) when the position deviation exists between the flaring slot and the gas outlet of any filtering gas path (13).
7. The intelligent automatic membrane changer for gas collection according to claim 1, wherein the base (10) comprises: the first air channel seat (101) is provided with a first air inlet channel (1011) and a plurality of mutually independent first filtering channels (1012), and the air outlet channel (14) is arranged on the first air channel seat (101); The second air passage seat (102) is provided with a second air inlet passage (1021) and a plurality of mutually independent second filtering passages (1022), and the first filtering passages (1012) and the second filtering passages (1022) are in one-to-one correspondence; The first air passage seat (101) is connected with the second air passage seat (102) through a fastener (103), so that the first air inlet passage (1011) and the second air inlet passage (1021) are communicated to form the air inlet passage (11), and the first filtering passage (1012) and the corresponding second filtering passage (1022) are communicated to form the filtering air passage (13).
8. The intelligent automatic membrane changer for gas collection according to claim 7, wherein the gas inlet channel (11) is simultaneously communicated with a plurality of filtering gas channels (13) through a gas chamber (12), and the base body (10) further comprises: the gland (104) is in threaded connection with the second gas path seat (102), and the gland (104) and the second gas path seat (102) enclose the gas chamber (12); the second air channel seat (102) is provided with a mounting surface (1023), a plurality of filter membrane grooves (1024) for placing the filter membranes (20) are arranged on the mounting surface (1023), and the filter membrane grooves (1024) are in one-to-one correspondence with the first filter passages (1012) and are mutually communicated; And each filter membrane groove (1024) is provided with a pressing ring (1025), and when the pressing cover (104) is installed on the gas path seat, the pressing cover (104) is propped against the pressing rings (1025) so that the pressing rings (1025) press the corresponding filter membrane (20) in the filter membrane grooves (1024).
9. The gas collection intelligent auto membrane changer according to claim 1, wherein the trigger (32) comprises: a cylinder (321) connected to the air path member; a ball (322) slidably disposed within the cylinder (321); and the second elastic piece (323) is arranged between the cylinder body (321) and the sphere (322) and is used for pushing the sphere (322) to extend out of the cylinder body (321) and prop against the circuit board (30).
10. The gas collection intelligent auto membrane changer of claim 1, wherein the drive control assembly comprises: the pressure sensor is connected with the air outlet air passage (14) through a pipeline; And a matched controller.

Description

Intelligent automatic membrane changer for gas collection Technical Field The invention belongs to the technical field of environmental monitoring, and particularly relates to an intelligent automatic membrane changer for gas collection. Background In environmental air quality monitoring, continuous on-line monitoring of pollutants is generally performed by continuously or periodically sampling, measuring and analyzing air by means of a monitoring station room. In the sampling process, in order to prevent particles in ambient air from entering the analysis instrument along with the air flow and polluting key components such as an optical lens and a reaction chamber, a filter membrane is generally additionally arranged at the front end of the sampling to block the particles. In order to ensure the filtering effect, the filter membrane needs to be replaced according to a specified period. Currently, common automatic membrane changing mechanisms typically include a membrane tray that holds a plurality of membrane filters, and two opposing compacts driven by motorized push rods. The inside air flue that is equipped with of briquetting, when two briquetting press from both sides tight with the filter membrane, the sampling gas flows through the filter membrane along the air flue, realizes filtering capability. When the filter membrane is replaced, the two pressing blocks are firstly loosened, the membrane carrying tray is driven by the motor to rotate, the next filter membrane is enabled to move to the position corresponding to the pressing blocks, then the pressing blocks are pressed again, and the switching of the filter membrane and the communication of the air channel are completed. However, this method has a problem in practical use, in which when the film carrying tray rotates to a set position under the drive of the motor, the operation cannot be stopped immediately due to the inertia of the motor, and overshoot phenomena of different degrees may occur due to different rotational speeds, resulting in deviation of the actual stop position of the film carrying tray. The position error can lead to inaccurate alignment between the filter membrane and the pressing block, and further can cause that the gas path is not tightly sealed after membrane replacement, and the gas leakage condition occurs, thereby affecting the accuracy of monitoring data and the reliability of equipment operation. Disclosure of Invention The invention aims to provide an intelligent automatic membrane changer for gas collection, which aims to improve the positioning accuracy of membrane replacement. In order to achieve the purpose, the invention adopts the technical scheme that the intelligent automatic membrane changer for gas collection comprises: The filter comprises a seat body, a plurality of filter air paths and an air outlet air path, wherein an air inlet air path, a plurality of filter air paths and the air outlet air path are formed in the seat body; The air channel piece is rotatably arranged on the base body, the air channel piece is always communicated with the air outlet air channel, and the air outlets of the filtering air channels are distributed along the rotating path of the air channel piece so that the air channel piece can rotate to be communicated with any filtering air channel; the circuit board is provided with a plurality of contacts, and the contacts are in one-to-one correspondence with the air outlets of the filtering air paths; The trigger piece is arranged on the gas path piece and used for rotating along with the gas path piece and forming a conducting loop when contacting with the contact; The driving control assembly is in transmission connection with the air passage part, is electrically connected with the circuit board and the trigger part and is used for controlling the air passage part to stop rotating when the conduction loop is identified; and friction damping exists between the air path part and the seat body so as to inhibit inertial overshoot when the air path part stops rotating. In one possible implementation, the air path member includes: the road changing disc is rotationally arranged on the base body; The first elastic piece is arranged between the road changing disc and the base body and is used for pushing the road changing disc to be attached to the base body so as to generate friction damping when the road changing disc rotates; the gas outlet of the filtering gas circuit is distributed along the rotating path of the road changing plate, so that the road changing plate can rotate to the position where the communication gas circuit is communicated with any filtering gas circuit. In one possible implementation manner, the seat body is provided with a containing cavity, and the containing cavity is simultaneously communicated with the air outlet of each filtering air passage and the air inlet of the air outlet air passage; the road changing disc is located in the accommodating cavity, and t