CN211292804U

CN211292804U - Portable nitrogen oxide tail gas analysis device

Info

Publication number: CN211292804U
Application number: CN201922290288.1U
Authority: CN
Inventors: 王小虎; 刘芳园
Original assignee: Hebei Shengnan Environmental Protection Technology Co ltd
Current assignee: Hebei Shengnan Environmental Protection Technology Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-08-18
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to a nitrogen oxide gas analysis appearance technical field especially relates to a portable nitrogen oxide tail gas analysis device. Inlay inside detecting the analysis appearance including supplementary pressure boost air supply unit, mainly include gear box and commuting case, inside turbine and the worm meshing transmission of gear box, the inside key joint has the fan on the worm of commuting case, drives the turbine through rotating the crank and rotates, can drive worm and the high-speed rotation of fan during the turbine rotates to form forward propulsive air current at the inside kuppe position of commuting case, thereby detect with the gaseous pressurization propelling movement of external world to detecting the sensor position under the promotion of air current, replace the air feed of electric air pump, need not to be equipped with external power supply, use not electric power constraint outside, it is very convenient to use and carry.

Description

Portable nitrogen oxide tail gas analysis device

Technical Field

The utility model relates to a nitrogen oxide gas analysis appearance technical field especially relates to a portable nitrogen oxide tail gas analysis device.

Background

The existing nitrogen oxide tail gas analyzer generally adopts a non-spectroscopic infrared absorption principle (NDIR) to measure CO, HC and CO2 in automobile exhaust gas and adopts an electrochemical cell principle to measure O2 and NO concentrations.

At present, an advanced handheld inspection analyzer mainly monitors gas in real time through four different sensors in a detection area; detection analysis appearance generally can be equipped with air pump and pipeline, need install the pipeline respectively at the import and the exit position of air pump when external supplementary supplying gas, then the exhaust hood of exhaust port position installation of pipeline, it is inside at the exhaust hood with four sensor covers through the exhaust hood, the import position of another pipeline is placed in the region that needs the detection, air pump switch-on power plug carries out the work of supplying gas, the gas pump that will detect the space sends the sensor position to and detects, whole assembling process is more loaded down with trivial details, and need dispose external power socket alone, detect in the external world and receive the restraint.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem, it is not enough to the technique that exists to the aforesaid, provides a portable nitrogen oxide tail gas analysis device, adopts supplementary pressure boost air supply unit to inlay inside detecting analysis appearance, mainly includes gear box and commuting case, inside turbine and the worm meshing transmission of gear box, the inside key joint has the fan on the worm of commuting case, drives the turbine through rotating the crank and rotates, can drive worm and fan high-speed rotatory during the turbine rotates to at the inside kuppe position of commuting case formation forward propulsive air current, thereby detect the gas pressurization propelling movement of external world to detecting sensor position under the promotion of air current, replace electric air pump air feed, need not to be equipped with external power, use not electric power restraint outside, it is very convenient to use and carry.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: comprises a detection analyzer and an auxiliary pressurizing air supply device; a fixing groove is formed in the middle of the back of the detection analyzer; the auxiliary pressurizing air supply device is arranged inside the fixing groove; an air inlet interface is arranged at the left side position above the detection analyzer; an exhaust interface is arranged on the detection analyzer on the right side of the air inlet interface; the auxiliary pressurizing air supply device comprises a box, a crank, a gear box, an air inlet pipe and an air outlet pipe; the box is fixedly arranged at the fixed groove position.

Further optimizing the technical scheme, the gear box is fixedly arranged in the box; a turbine is connected with a bearing at the right side position in the gear box; a worm is in bearing connection with the left side position inside the gear box in the vertical direction; the worm wheel and the worm are in meshed transmission.

Further optimizing the technical scheme, a driving shaft is arranged below the crank; the driving shaft is connected to the middle of the turbine in a spline mode.

Further optimizing the technical scheme, an exchange box is arranged above the left side of the box; the top of the worm penetrates through the box and is arranged in the exchange box; the worm and the box are sealed; and a fan is connected to the worm in the exchange box through a key.

Further optimizing the technical scheme, a flow guide cover is arranged at the periphery of the fan in the exchange box; an opening is arranged below the air guide sleeve; the air guide sleeve is communicated with the exchange box through the opening.

Further optimizing the technical scheme, one end of the exhaust pipe is communicated with the top of the flow guide cover; the other end of the exhaust pipe is communicated with the exhaust interface.

Further optimizing the technical scheme, one end of the air inlet pipe is communicated with the lower part of the right side of the exchange box; the other end of the air inlet pipe is communicated with the air inlet interface.

Compared with the prior art, the utility model has the advantages of it is following:

1. the auxiliary pressurizing air supply device is embedded inside the detection analyzer and mainly comprises a gear box and an exchange box, a turbine and a worm inside the gear box are in meshing transmission, a fan is connected to the worm inside the exchange box through keys on the worm, the turbine is driven to rotate through a rotating crank, and the worm and the fan can be driven to rotate at a high speed when the turbine rotates.

2. The fan can be driven to rotate at high speed by adopting worm and gear transmission and shaking the crank at a lower rotating speed.

3. Through the action of the fan, airflow which is pushed forwards is formed at the position of the flow guide cover in the exchange box, so that the outside air is pressurized and pushed to the position of the detection sensor to be detected under the pushing of the airflow.

4. Hand air feed replaces electric air pump air feed, need not to be equipped with external power, uses not restricted by the electric power outside, uses to carry very conveniently.

Drawings

Fig. 1 is a perspective view showing the front structure of a portable nitrogen oxide exhaust gas analyzer.

Fig. 2 is a perspective view of a back structure of a portable nitrogen oxide exhaust gas analyzer.

Fig. 3 is a schematic structural diagram of an auxiliary pressurizing and air feeding device of a portable nitrogen oxide tail gas analysis device.

Fig. 4 is a partial sectional view of an internal transmission structure of an auxiliary pressurizing and air-feeding device of a portable nitrogen oxide exhaust gas analyzing device.

In the figure: 1. a detection analyzer; 101. fixing grooves; 102. an air inlet interface; 103. an exhaust interface; 2. an auxiliary pressurizing air supply device; 201. a box; 202. a crank; 203. a gear case; 204. an air inlet pipe; 205. an exhaust pipe; 206. a turbine; 207. a worm; 208. a drive shaft; 209. an exchange box; 210. a fan; 211. a pod; 212. and (4) opening.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: referring to fig. 1-4, a portable nitrogen oxide exhaust gas analyzer is characterized in that: comprises a detection analyzer 1 and an auxiliary pressurizing air supply device 2; a fixing groove 101 is formed in the middle of the back of the detection analyzer 1; the auxiliary pressurizing air supply device 2 is arranged inside the fixing groove 101; an air inlet interface 102 is arranged at the left side position above the detection analyzer 1; an exhaust interface 103 is arranged on the detection analyzer 1 on the right side of the air inlet interface 102; the auxiliary pressurizing air supply device 2 comprises a box 201, a crank 202, a gear box 203, an air inlet pipe 204 and an air outlet pipe 205; the box 201 is fixedly arranged at the position of the fixing groove 101.

Preferably, the gear box 203 is fixedly arranged inside the box 201; a turbine 206 is connected with the right side position inside the gear box 203 in a bearing way; a worm 207 is in bearing connection with the left position inside the gear box 203 in the vertical direction; the worm wheel 206 and the worm 207 are in meshed transmission.

Preferably, a driving shaft 208 is arranged below the crank 202; the drive shaft 208 is splined in the middle of the turbine 206.

Preferably, an exchange box 209 is arranged above the left side of the box 201; the top of the worm 207 penetrates through the box 201 and is arranged inside the exchange box 209; the worm 207 and the box 201 are sealed; a fan 210 is keyed to the worm 207 inside the exchange box 209.

Preferably, a flow guide cover 211 is arranged at the periphery of the fan 210 in the exchange box 209; an opening 212 is arranged below the air guide sleeve 211; the pod 211 communicates with the exchange box 209 through an opening 212.

Preferably, one end of the exhaust pipe 205 is communicated with the top of the air guide sleeve 211; the other end of the exhaust pipe 205 communicates with the exhaust port 103.

Preferably, one end of the air inlet pipe 204 is communicated with the lower part of the right side of the exchange box 209; the other end of the intake pipe 204 is communicated with the intake interface 102.

When the device is used, step one, as shown in the combined drawings of fig. 1-4, when external auxiliary air supply detection is carried out, one end of a hose with an exhaust hood is connected to the position of an exhaust interface 103, and the exhaust hood is fixed at the position of a detection window; one end of another external hose is connected with one end of the air inlet interface 102, and the other end of the hose is placed in the area needing to be detected.

During detection, the crank 202 is rotated clockwise, and the worm wheel 206 and the worm 207 are in meshed transmission; a driving shaft 208 is arranged below the crank 202; the driving shaft 208 is splined to the middle part of the worm wheel 206, so that when the crank 202 is rotated, the driving shaft 208 drives the worm wheel 206 to rotate together, and the worm wheel 206 drives the worm 207 to rotate; since the fan 210 is keyed to the worm 207' inside the exchange box 209, the rotation of the worm 207 drives the fan 210 to rotate together.

The inside of the exchange box 209 is provided with a flow guide cover 211 at the periphery of the fan 210; an opening 212 is arranged below the air guide sleeve 211; the air guide cover 211 is communicated with the exchange box 209 through the opening 212, so that when the fan 210 rotates, a forward air flow is formed at the position of the air guide cover 211, so that the front side of the air guide cover 211 is in a high-pressure state under the action of the air flow, and the position of the opening 212 at the rear side of the air guide cover 211 is in a negative-pressure state.

Step two, as shown in fig. 1-4, because' one end of the exhaust pipe 205 is communicated with the top of the air guide sleeve 211; the other end of the exhaust pipe 205 is communicated with the exhaust interface 103', gas can be exhausted through the exhaust pipe 205 under a high pressure state, and the gas enters the position of the sensor through the exhaust pipe 205, the exhaust interface 103, a pipeline and an exhaust hood to be detected.

One end of the air inlet pipe 204 is communicated with the lower part of the right side of the exchange box 209; the other end of the air inlet pipe 204 is communicated with the air inlet interface 102', meanwhile, air in the detection space is pumped into the pipeline in a negative pressure state, and then air is supplied through the air inlet joint, the air inlet pipe 204, the interior of the box 201, the opening 212 and the air guide cover 211.

Therefore, an airflow which is pushed forwards is formed at the position of the air guide cover 211 inside the exchange box 209 through the action of the fan 210, so that the outside air is pushed to the position of the detection sensor under the pushing of the airflow for detection; hand air feed replaces electric air pump air feed, need not to be equipped with external power, uses not restricted by the electric power outside, uses to carry very conveniently.

The fan 210 can be driven to rotate at a high speed by shaking the crank 202 at a low speed by adopting the worm 207 transmission of the worm wheel 206.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, belongs to the common general knowledge in this field, and the utility model discloses mainly be used for protecting mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A portable nitrogen oxide tail gas analysis device which is characterized in that: comprises a detection analyzer (1) and an auxiliary pressurizing and air feeding device (2); a fixing groove (101) is formed in the middle of the back of the detection analyzer (1); the auxiliary pressurizing air supply device (2) is arranged inside the fixing groove (101); an air inlet interface (102) is arranged at the left side position above the detection analyzer (1); an exhaust interface (103) is arranged on the detection analyzer (1) on the right side of the air inlet interface (102); the auxiliary pressurizing air supply device (2) comprises a box (201), a crank (202), a gear box (203), an air inlet pipe (204) and an air outlet pipe (205); the box (201) is fixedly arranged at the position of the fixing groove (101).

2. The portable nitrogen oxide exhaust gas analysis device according to claim 1, wherein: the gear box (203) is fixedly arranged in the box (201); a turbine (206) is connected with the right side position inside the gear box (203) in a bearing way; a worm (207) is in bearing connection with the left position inside the gear box (203) in the vertical direction; the worm wheel (206) and the worm (207) are in meshed transmission.

3. The portable nitrogen oxide exhaust gas analysis device according to claim 2, wherein: a driving shaft (208) is arranged below the crank (202); the driving shaft (208) is connected to the middle of the turbine (206) in a spline mode.

4. The portable nitrogen oxide exhaust gas analysis device according to claim 2, wherein: an exchange box (209) is arranged above the left side of the box (201); the top of the worm (207) penetrates through the box (201) and then is arranged in the exchange box (209); the worm (207) and the box (201) are sealed; a fan (210) is connected to the worm (207) in the exchange box (209) through a key.

5. The portable nitrogen oxide exhaust gas analysis device according to claim 4, wherein: a flow guide cover (211) is arranged at the periphery of the fan (210) in the exchange box (209); an opening (212) is arranged below the air guide sleeve (211); the air guide sleeve (211) is communicated with the exchange box (209) through an opening (212).

6. The portable nitrogen oxide exhaust gas analysis device according to claim 5, wherein: one end of the exhaust pipe (205) is communicated with the top of the air guide sleeve (211); the other end of the exhaust pipe (205) is communicated with the exhaust interface (103).

7. The portable nitrogen oxide exhaust gas analysis device according to claim 4, wherein: one end of the air inlet pipe (204) is communicated with the lower part of the right side of the exchange box (209); the other end of the air inlet pipe (204) is communicated with the air inlet interface (102).