CN211292813U

CN211292813U - Hand-held type nitrogen oxide tail gas analysis device

Info

Publication number: CN211292813U
Application number: CN201922347879.8U
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: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-18
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a nitrogen oxide tail gas analysis appearance technical field especially relates to a hand-held type nitrogen oxide tail gas analysis device. The detection device comprises a sealing cover plate arranged on a detection area, a sleeve rotating shaft at the bottom of the sealing cover plate is connected inside a groove, a through hole corresponding to a detection sensor is arranged on the sealing cover plate, the detection sensor can be opened and closed by rotating the sealing cover plate, the sensor can be sealed when not in use, the pollution to the sensor caused by the outside is prevented, and the service life of the sensor is long; sealing rings are arranged on the upper side and the lower side of the sealing cover plate, and the periphery of the sealing cover plate and the detection area can be sealed through the lower sealing rings; when the exhaust hood is externally connected with an air pumping device, the exhaust hood and the sealing cover plate are sealed through the sealing ring above the exhaust hood.

Description

Hand-held type nitrogen oxide tail gas analysis device

Technical Field

The utility model relates to a nitrogen oxide tail gas analysis appearance technical field especially relates to a hand-held type 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; the sensitivity intensity of the sensor is reduced when the sensor is used for a long time, the gas detection precision is reduced, so the sensor needs to be maintained and replaced at intervals, the sensor is exposed outside for a long time, external impurities can pollute the sensor when the sensor is not used, the service life of the sensor is short, and the maintenance and replacement of the sensor are frequent.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to solve the technical deficiencies, and provide a hand-held nitrogen oxide tail gas analysis device, adopt and set up the sealed apron on the detection area, the sleeve pivot of sealed apron bottom is connected inside the recess, be provided with the through-hole that corresponds with the detection sensor on the sealed apron, can realize opening and closing of detection sensor position through rotating the sealed apron, can seal the sensor when not using, prevent that the external world from causing the pollution to it, the life of sensor is longer; sealing rings are arranged on the upper side and the lower side of the sealing cover plate, and the periphery of the sealing cover plate and the detection area can be sealed through the lower sealing rings; when the exhaust hood is externally connected with an air pumping device, the exhaust hood and the sealing cover plate are sealed through the sealing ring above the exhaust hood.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: comprises a detection analyzer, a spring and a sealing cover plate; a detection area is arranged above the detection analyzer; an indicator light is arranged above the detection area; a display screen is arranged in the middle of the detection analyzer; the bottom of the detection analyzer is provided with a key; a fixed upright post is arranged in the middle of the detection area; four detection sensors are arranged on the periphery of the fixed upright post in the detection area; the sealing cover plate is arranged above the detection area.

Further optimizing the technical scheme, the periphery of the fixed upright post is provided with a groove in the vertical direction; a sleeve is arranged below the middle part of the sealing cover plate; the sleeve rotating shaft is connected inside the groove.

Further optimizing the technical scheme, the bottom of the sleeve is provided with a baffle; the middle part of the baffle is provided with a through hole; the fixed upright post penetrates through the middle part of the through hole; a fixed thread is arranged above the periphery of the fixed upright post; a lock sleeve is arranged at the position of the fixed thread; the locking sleeve is arranged inside the sleeve; the spring is sleeved on the fixed upright post; the bottom of the baffle plate is connected with the lock sleeve through a spring.

Further optimize this technical scheme, the lock sleeve top be provided with rotatory draw-in groove.

Further optimizing the technical scheme, four detection holes are uniformly formed in the sealing cover plate; the four detection holes and the four detection sensors respectively correspond to each other up and down.

Further optimize this technical scheme, sealed apron upper and lower both sides periphery all be provided with sealed rubber ring.

Further optimize this technical scheme, sealed apron top be provided with rotatory boss between two adjacent inspection holes.

Further optimizing the technical scheme, the periphery of the groove is provided with a limit arc groove in the detection area; the bottom of the sealing cover plate is provided with a limiting table; the limiting table is connected inside the limiting arc groove in a sliding mode.

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

1. set up sealed apron on detection area, the sleeve pivot of sealed apron bottom is connected inside the recess, be provided with the through-hole that corresponds with the detection sensor on the sealed apron, can realize opening and closing of detection sensor position through rotating sealed apron.

2. The sensor can be sealed when not in use, so that the sensor is prevented from being polluted by the outside, the service life of the sensor is long, and the problems that the sensor is exposed to the outside for a long time, the outside sundries can pollute the sensor when not in use, the service life of the sensor is short, and the sensor is maintained and replaced frequently are solved.

3. The upper side and the lower side of the sealing cover plate are provided with sealing rings, and the periphery of the sealing cover plate and the detection area can be sealed through the sealing rings below.

4. When the air pumping device is externally connected, the exhaust hood and the sealing cover plate are sealed by the sealing ring above the exhaust hood, so that sufficient and uniform air flow at the position of the sensor is ensured.

5. The setting of spring can guarantee that sealed apron compresses tightly all the time in the detection zone, and whole device design, easy operation use is got up very conveniently.

Drawings

Fig. 1 is a schematic view illustrating an opened state of a sealing cover plate of a handheld nitrogen oxide exhaust gas analysis device.

Fig. 2 is a schematic view of a sealing cover plate of a handheld nitrogen oxide exhaust gas analysis device in a closed state.

Fig. 3 is a partially enlarged view of a mounting structure of a detection region of a hand-held nitrogen oxide exhaust gas analyzer.

Fig. 4 is a partial exploded view of a seal cover portion mounting structure of a hand-held nitrogen oxide exhaust gas analysis device.

Fig. 5 is a partial sectional view of a seal cover plate portion mounting structure of a hand-held nitrogen oxide exhaust gas analyzing apparatus.

In the figure: 1. a detection analyzer; 101. a detection zone; 102. an indicator light; 103. a display screen; 104. pressing a key; 105. fixing the upright post; 106. a groove; 107. fixing threads; 108. a limiting arc groove; 2. a spring; 3. sealing the cover plate; 301. a sleeve; 302. a baffle plate; 303. a through hole; 304. a detection hole; 305. sealing the rubber ring; 306. rotating the boss; 307. a limiting table; 4. a detection sensor; 5. a lock sleeve; 501. the clamping groove is rotated.

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. 1-5, a hand-held nitrogen oxide exhaust gas analyzer is characterized in that: the device comprises a detection analyzer 1, a spring 2 and a sealing cover plate 3; a detection area 101 is arranged above the detection analyzer 1; an indicator light 102 is arranged above the detection area 101; the middle part of the detection analyzer 1 is provided with a display screen 103; a key 104 is arranged at the bottom of the detection analyzer 1; a fixed upright 105 is arranged in the middle of the detection area 101; four detection sensors 4 are arranged in the detection area 101 at the periphery of the fixed upright 105; the sealing cover 3 is arranged above the detection area 101.

Preferably, the periphery of the fixed upright 105 is provided with a groove 106 in the vertical direction; a sleeve 301 is arranged below the middle part of the sealing cover plate 3; the sleeve 301 is pivotally connected within the recess 106.

Preferably, the bottom of the sleeve 301 is provided with a baffle 302; the middle part of the baffle 302 is provided with a through hole 303; the fixed upright 105 penetrates through the middle part of the through hole 303; a fixing thread 107 is arranged above the periphery of the fixing upright post 105; a lock sleeve 5 is arranged at the position of the fixed thread 107; the lock sleeve 5 is arranged inside the sleeve 301; the spring 2 is sleeved on the fixed upright post 105; the bottom of the baffle plate 302 is connected with the lock sleeve 5 through the spring 2.

Preferably, a rotary clamping groove 501 is arranged at the top of the lock sleeve 5.

Preferably, four detection holes 304 are uniformly formed in the sealing cover plate 3; the four detection holes 304 and the four detection sensors 4 respectively correspond to each other up and down.

Preferably, the sealing cover plate 3 is provided with sealing rubber rings 305 on the peripheries of the upper and lower sides.

Preferably, a rotary boss 306 is arranged on the top of the sealing cover plate 3 between two adjacent detection holes 304.

Preferably, a limit arc groove 108 is arranged on the periphery of the groove 106 at the detection area 101; the bottom of the sealing cover plate 3 is provided with a limit table 307; the limiting table 307 is slidably connected inside the limiting arc groove 108.

In use, in the first step, as shown in fig. 1 to 5, the rotary boss 306 on the rotary seal cover is provided with the groove 106 in the vertical direction on the periphery of the fixed upright 105; a sleeve 301 is arranged below the middle part of the sealing cover plate 3; the sleeve 301 is connected to the inside of the groove 106 through a rotating shaft, so when the rotating boss 306 is pushed, the rotating boss 306 pushes the sealing cover plate 3 to rotate, the sleeve 301 below the sealing cover plate 3 rotates inside the groove 106 in the process, the sealing cover plate 3 drives the detection hole 304 to rotate together when rotating, and the position of the detection sensor 4 begins to be exposed at the position of the detection hole 304 at the moment.

Because the periphery of the groove 106 is provided with a limit arc groove 108 in the detection area 101; the bottom of the sealing cover plate 3 is provided with a limit table 307; the limiting table 307 is slidably connected to the inside 'of the limiting arc groove 108', so that the limiting table 307 can be driven to rotate in the limiting arc groove 108 when the sealing cover plate 3 rotates, when the sealing cover plate 3 rotates by 22.5 degrees, the limiting table 307 just moves to the rightmost end of the limiting arc groove 108, the position of the detection hole 304 just coincides with that of the detection sensor 4, and the detection sensor 4 is completely exposed; at this point, gas detection analysis may be performed.

When the device is not used, the rotating boss 306 is rotated reversely in the same way, the sealing cover plate 3 rotates reversely to cover the detection sensor 4, and when the limiting platform 307 moves to the leftmost end of the limiting arc groove 108, the detection sensor 4 is completely sealed.

Step two, as shown in fig. 1-5, because' the fixing thread 107 is arranged above the periphery of the fixing upright post 105; a lock sleeve 5 is arranged at the position of the fixed thread 107; the lock sleeve 5 is arranged inside the sleeve 301; the spring 2 is sleeved on the fixed upright post 105; the bottom of the baffle plate 302 is connected with the lock sleeve 5 through the spring 2', so that a downward force can be applied to the sleeve 301 under the action of the spring 2, the sealing cover plate 3 can be pressed on the sealing area under the action of the downward force, the upper side and the lower side of the sealing cover plate 3 are both provided with sealing rubber rings 305, and the periphery of the sealing cover plate 3 and the detection area 101 can be sealed through the sealing rubber rings 305 below; when the air pumping device is externally connected, the exhaust hood and the sealing cover plate 3 are sealed through the sealing rubber ring 305 above, and the sufficient and uniform air flow at the position of the sensor is ensured.

In summary, the sealing cover plate 3 is arranged on the detection area 101, and the position of the detection sensor 4 can be opened and closed by rotating the sealing cover plate 3; the sensor can be sealed when not in use, so that the sensor is prevented from being polluted by the outside, the service life of the sensor is long, and the problems that the sensor is exposed to the outside for a long time, the outside sundries can pollute the sensor when not in use, the service life of the sensor is short, and the sensor is maintained and replaced frequently are solved.

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. The utility model provides a hand-held type nitrogen oxide tail gas analysis device which characterized in that: comprises a detection analyzer (1), a spring (2) and a sealing cover plate (3); a detection area (101) is arranged above the detection analyzer (1); an indicator lamp (102) is arranged above the detection area (101); a display screen (103) is arranged in the middle of the detection analyzer (1); a key (104) is arranged at the bottom of the detection analyzer (1); a fixed upright post (105) is arranged in the middle of the detection area (101); four detection sensors (4) are arranged in the detection area (101) at the periphery of the fixed upright post (105); the sealing cover plate (3) is arranged above the detection area (101).

2. The hand-held nitrogen oxide exhaust gas analysis device of claim 1, wherein: a groove (106) is formed in the periphery of the fixed upright post (105) in the vertical direction; a sleeve (301) is arranged below the middle part of the sealing cover plate (3); the sleeve (301) is connected inside the groove (106) in a rotating mode.

3. The hand-held nitrogen oxide exhaust gas analysis device of claim 2, wherein: a baffle (302) is arranged at the bottom of the sleeve (301); a through hole (303) is formed in the middle of the baffle (302); the fixed upright post (105) penetrates through the middle part of the through hole (303); a fixed thread (107) is arranged above the periphery of the fixed upright post (105); a lock sleeve (5) is arranged at the position of the fixed thread (107); the lock sleeve (5) is arranged inside the sleeve (301); the spring (2) is sleeved on the fixed upright post (105); the bottom of the baffle (302) is connected with the lock sleeve (5) through a spring (2).

4. The hand-held nitrogen oxide exhaust gas analysis device of claim 3, wherein: the top of the lock sleeve (5) is provided with a rotary clamping groove (501).

5. The hand-held nitrogen oxide exhaust gas analysis device of claim 1, wherein: four detection holes (304) are uniformly formed in the sealing cover plate (3); the four detection holes (304) and the four detection sensors (4) respectively correspond up and down.

6. The hand-held nitrogen oxide exhaust gas analysis device of claim 1, wherein: the periphery of the upper side and the lower side of the sealing cover plate (3) is provided with a sealing rubber ring (305).

7. The hand-held nitrogen oxide exhaust gas analysis device of claim 5, wherein: and a rotary boss (306) is arranged between two adjacent detection holes (304) at the top of the sealing cover plate (3).

8. The hand-held nitrogen oxide exhaust gas analysis device of claim 2, wherein: a limiting arc groove (108) is formed in the periphery of the groove (106) in the detection area (101); the bottom of the sealing cover plate (3) is provided with a limiting table (307); the limiting table (307) is connected inside the limiting arc groove (108) in a sliding mode.