CN220542566U

CN220542566U - Constant temperature constant current gas sampler of double-circuit sampling

Info

Publication number: CN220542566U
Application number: CN202322076879.5U
Authority: CN
Inventors: 孙文娟; 李然; 李凯宾
Original assignee: Hebei Huanhai Testing Technology Co ltd
Current assignee: Hebei Huanhai Testing Technology Co ltd
Priority date: 2023-08-03
Filing date: 2023-08-03
Publication date: 2024-02-27
Anticipated expiration: 2033-08-03

Abstract

The utility model relates to a constant-temperature constant-current gas sampler with double-path sampling, which comprises a bracket, wherein the top of the bracket is in threaded connection with a sampling box, the top of the sampling box is fixedly provided with an air inlet pipe penetrating into the sampling box, the outer surface of the air inlet pipe is fixedly provided with a heater, the left side and the right side of the air inlet pipe are respectively fixedly provided with an electric fan and a temperature measurer which are positioned in the inner cavity of the sampling box, the bottom of the air inlet pipe is fixedly provided with a control assembly, the control assembly comprises a shunt pipe fixed with the air inlet pipe, and the left side and the right side of the shunt pipe are respectively fixedly provided with a flow measurer. This constant temperature constant current gas sampler of double-circuit sampling when gas passes through the intake pipe, can detect present temperature by temperature detector, if the temperature is higher than the setting temperature, then can cool down gas through the electric fan, if the temperature is less than the setting temperature, then can heat gas through the heater to make gas temperature keep at the setting value, effectually improved the precision that detects.

Description

Constant temperature constant current gas sampler of double-circuit sampling

Technical Field

The utility model relates to the technical field of double-path gas samplers, in particular to a constant-temperature constant-current gas sampler capable of double-path sampling.

Background

The atmospheric sampler is an instrument or device for collecting atmospheric pollutants or polluted air, and has various types, and can be divided into a gas sampler and a particulate matter sampler according to collection objects, and can be divided into an environment sampler, an indoor sampler and a pollution source sampler according to use places.

When detecting ambient air, the dual-path gas sampler is usually applied, but the existing dual-path gas sampler has the problem of larger limitation, is inconvenient for keeping the air inflow of equipment and the temperature of air flow constant, and affects the accuracy of the air sampler in detecting harmful gas, so the dual-path sampling constant-temperature constant-current gas sampler is provided to solve the problem.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a constant temperature and constant flow gas sampler with double-path sampling, which has the advantages of small limitation and the like, and solves the problems that the air inflow and the air flow temperature of equipment cannot be kept constant and the detection accuracy is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the constant-temperature constant-current gas sampler comprises a bracket, wherein the top of the bracket is in threaded connection with a sampling box, the top of the sampling box is fixedly provided with an air inlet pipe penetrating into the sampling box, the outer surface of the air inlet pipe is fixedly provided with a heater, the left side and the right side of the air inlet pipe are respectively fixedly provided with an electric fan and a temperature measurer which are positioned in the inner cavity of the sampling box, and the bottom of the air inlet pipe is fixedly provided with a control assembly;

the control assembly comprises a shunt tube fixed with an air inlet pipe, flow measuring devices are fixed on the left side and the right side of the shunt tube, two fixed boxes are fixed on the outer surfaces of the shunt tube, a bearing box and an air suction pipe are respectively fixed on the top of the fixed boxes, a fan is fixed on the top of the air suction pipe, two rotating rods are fixed on one sides of the inner cavities of the fixed boxes, which are opposite to each other, inner threads of the rotating rods are connected with pushing rods in sliding connection with the fixed boxes, driven gears are fixed on the outer surfaces of the rotating rods, driving gears penetrating through the bearing box are meshed on the tops of the driven gears, and control rods which are connected with the bearing box in a rotating mode and penetrate through the outer portions of the sampling boxes are fixed on the axle center of the driving gears.

Further, the knob that is located the sampling box outside is fixed with to the surface of control lever, the front of sampling box is fixed with the flowmeter that is two in quantity.

Further, the through hole has been seted up at the top of sampling case, the surface of through hole is fixed with sealed pad, sealed inside and the intake pipe of filling up are fixed.

Further, the surface of push rod is fixed with first screw thread strip, two the bull stick is all offered with the first screw hole of first screw thread strip looks adaptation in one side that is opposite to each other.

Further, two fixed bearings are fixed on one sides of the inner cavities of the fixed boxes, and the inner parts of the fixed bearings are fixed with the rotating rod.

Further, the shunt tubes are U-shaped tubes, the two fixing boxes are respectively fixed on two sides of the U-shaped tubes, and a radiating window is fixed on the left side of the sampling box.

Further, the bottom of sampling case is fixed with the threaded rod, the second screw hole with threaded rod looks adaptation has been seted up at the top of support.

Further, limiting plates are fixed on the left side and the right side of the pushing rod, and the limiting plates are tightly attached to the fixed box.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this constant temperature constant current gas sampler of double-circuit sampling when gas passes through the intake pipe, can detect present temperature by temperature detector, if the temperature is higher than the setting temperature, then can cool down gas through the electric fan, if the temperature is less than the setting temperature, then can heat gas through the heater to make gas temperature keep at the setting value, effectually improved the precision that detects.

2. This constant temperature constant current gas sampler of double-circuit sampling, when gas passes through control assembly, the air input can be detected and present on the flowmeter, can be through control assembly control air input through rotatory knob, from the invariable of effectual assurance air input, further improved the detection precision of equipment.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a structural view of the present utility model;

FIG. 3 is a schematic diagram of a control assembly according to the present utility model.

In the figure: 1 bracket, 2 sampling box, 3 air inlet pipe, 4 heater, 5 temperature measurer, 6 electric fan, 7 control assembly, 701 shunt tubes, 702 flow measurer, 703 fixed box, 704 bearing box, 705 air suction pipe, 706 fan, 707 turning rod, 708 push rod, 709 driven gear, 710 driving gear, 711 control rod, 8 flow meter and 9 knob.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the constant temperature and constant current gas sampler with two-way sampling in the embodiment comprises a bracket 1, wherein the bracket 1 can support a sampling box 2, so that gas at a higher position can be inhaled, the integral practicability is effectively improved, the top of the bracket 1 is in threaded connection with the sampling box 2, a radiating window is fixed on the left side of the sampling box 2, the air exchange rate can be improved by installing the radiating window, the radiating efficiency of an electric fan 6 can be effectively improved, the front surface of the sampling box 2 is fixed with two flow meters 8, and the air flow rate can be clearly observed through the flow meters 8, so that the subsequent adjustment is convenient.

In addition, the top of sampling case 2 is fixed with and runs through to the inside intake pipe 3 of sampling case 2, the through-hole has been seted up at the top of sampling case 2, the external surface of through-hole is fixed with sealed the pad, sealed pad can effectually improve holistic leakproofness, sealed inside and intake pipe 3 are fixed, the external surface of intake pipe 3 is fixed with heater 4, when gas temperature is too low, can effectually heat gas through starting heater 4, the left and right sides of intake pipe 3 is fixed with respectively and is located the electric fan 6 and the temperature measurement ware 5 of sampling case 2 inner chamber, when gas temperature is too low, cool down gas through starting electric fan 6, the bottom of intake pipe 3 is fixed with control assembly 7.

In this embodiment, the bottom of sampling case 2 is fixed with the threaded rod, and the second screw hole with threaded rod looks adaptation has been seted up at the top of support 1, makes sampling case 2 more convenient to detach through threaded connection to holistic stability has been improved.

In general, the temperature measurer 5 can detect the gas in the air inlet pipe 3, and when the temperature is different from the set temperature, the temperature of the gas is kept at the set value through the electric fan 6 and the heater 4, so that the constancy of the temperature of the gas is ensured, and the accuracy of the subsequent detection is effectively improved.

Referring to fig. 3, in order to ensure the constant gas intake amount, the control assembly 7 in this embodiment includes a shunt tube 701 fixed to the gas intake pipe 3, wherein flow measuring devices 702 are fixed to both left and right sides of the shunt tube 701, the flow measuring devices 702 measure the gas flow rate and display on the flow meter 8, two fixing boxes 703 are fixed to the outer surface of the shunt tube 701, the shunt tube 701 is a U-shaped tube, the two fixing boxes 703 are respectively fixed to both sides of the U-shaped tube, and the U-shaped tube shunts the gas, thereby performing two-way measurement.

Furthermore, the top of fixed case 703 is fixed with respectively and accepts case 704 and breathing pipe 705, the top of breathing pipe 705 is fixed with fan 706, the one side that two fixed case 703 inner chambers are opposite to each other all is fixed with bull stick 707, one side that two fixed case 703 inner chambers are opposite to each other all is fixed with fixed bearing, fixed bearing makes the rotation of bull stick 707 more stable, fixed bearing's inside and bull stick 707 are fixed, the inside threaded connection of bull stick 707 has the catch bar 708 with fixed case 703 sliding connection, the surface of catch bar 708 is fixed with first screw thread strip, the first screw hole with first screw thread strip looks adaptation is all offered to one side that two bull sticks 707 are opposite to each other, because of the unable rotation of catch bar 708, thereby the rotation of bull stick 707 can promote catch bar 708 and remove.

To supplement, the surface of bull stick 707 is fixed with driven gear 709, and driven gear 709's top meshing has the driving gear 710 that runs through to accepting case 704 inside, and driving gear 710's axle center department is fixed with and is connected with accepting case 704 rotation and runs through to the outside control lever 711 of sampling case 2, and the surface mounting of control lever 711 has the knob 9 that is located sampling case 2 outside, can convenient and fast control lever 711 through control knob 9 to promote push rod 708 and close fixed case 703, effectually improved holistic practicality.

In this embodiment, limiting plates are fixed on the left and right sides of the push rod 708, and the limiting plates are tightly attached to the fixed box 703, and the fixed box 703 can be closed by pushing the push rod 708, so that the air inlet rate is effectively controlled.

In general, the knobs 9 on both sides respectively control various fixed boxes 703, and the limit plates on the push rods 708 can be pushed to close the fixed boxes 703 by rotating the knobs 9, so that the air pressure is effectively controlled, the air flow rate and the set array are kept constant, the accuracy in gas detection is further maintained, and the overall practicability is effectively improved.

The control mode of the utility model is controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the art, and the utility model is mainly used for protecting mechanical devices, so the utility model does not explain the control mode and circuit connection in detail.

The working principle of the embodiment is as follows:

when constant-temperature gas enters the fixed box 703 through the shunt pipe 701, flow data can be detected by the flow measurer 702 and presented on the flow meter 8, when the flow rate is required to be regulated, the control rod 711 and the driving gear 710 are pushed to rotate only by rotating the knob 9, so that the driven gear 709 meshed with the driving gear 710 pushes the rotating rod 707 to move, the pushing rod 708 which cannot rotate moves under the rotation of the rotating rod 707, the flow speed of air in the shunt pipe 701 is reduced, the flow rate is kept constant, the overall practicability is effectively improved, and the detection result of the device is more accurate.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a constant temperature constant current gas sampler of double-circuit sampling, includes support (1), its characterized in that: the top of the bracket (1) is in threaded connection with a sampling box (2), an air inlet pipe (3) penetrating through the sampling box (2) is fixed at the top of the sampling box (2), a heater (4) is fixed on the outer surface of the air inlet pipe (3), an electric fan (6) and a temperature measurer (5) which are positioned in the inner cavity of the sampling box (2) are respectively fixed at the left side and the right side of the air inlet pipe (3), and a control assembly (7) is fixed at the bottom of the air inlet pipe (3);

the control assembly (7) comprises a shunt tube (701) fixed with an air inlet tube (3), flow measuring devices (702) are fixed on the left side and the right side of the shunt tube (701), two fixed boxes (703) are fixed on the outer surface of the shunt tube (701), a bearing box (704) and an air suction pipe (705) are respectively fixed on the top of the fixed boxes (703), a fan (706) is fixed on the top of the air suction pipe (705), two rotating rods (707) are fixed on opposite sides of an inner cavity of the fixed boxes (703), pushing rods (708) are connected with inner threads of the rotating rods (707) in a sliding mode with the fixed boxes (703), driven gears (709) are fixed on the outer surface of the rotating rods (707), driving gears (710) penetrating through the bearing boxes (704) are meshed on the top of the driven gears (709), and control rods (711) which are connected with the bearing boxes (704) in a rotating mode and penetrate through the outer portions of the sampling boxes (2) are fixed on the axis of the driving gears (710).

2. The two-way sampling constant temperature and constant flow gas sampler according to claim 1 and characterized in that: the outer surface of the control rod (711) is fixedly provided with a knob (9) positioned outside the sampling box (2), and the front surface of the sampling box (2) is fixedly provided with two flowmeter (8).

3. The two-way sampling constant temperature and constant flow gas sampler according to claim 1 and characterized in that: the top of sampling case (2) has seted up the through-hole, the surface of through-hole is fixed with sealed pad, sealed inside and intake pipe (3) of filling up are fixed.

4. The two-way sampling constant temperature and constant flow gas sampler according to claim 1 and characterized in that: the outer surface of the pushing rod (708) is fixedly provided with a first threaded strip, and one side of the two rotating rods (707) opposite to each other is provided with a first threaded hole matched with the first threaded strip.

5. The two-way sampling constant temperature and constant flow gas sampler according to claim 1 and characterized in that: and fixed bearings are fixed on the opposite sides of the inner cavities of the two fixed boxes (703), and the inner parts of the fixed bearings are fixed with the rotating rod (707).

6. The two-way sampling constant temperature and constant flow gas sampler according to claim 1 and characterized in that: the shunt tubes (701) are U-shaped tubes, the two fixing boxes (703) are respectively fixed on two sides of each U-shaped tube, and a radiating window is fixed on the left side of the sampling box (2).

7. The two-way sampling constant temperature and constant flow gas sampler according to claim 1 and characterized in that: the bottom of sampling case (2) is fixed with the threaded rod, the second screw hole with threaded rod looks adaptation has been seted up at the top of support (1).

8. The two-way sampling constant temperature and constant flow gas sampler according to claim 1 and characterized in that: limiting plates are fixed on the left side and the right side of the pushing rod (708), and the limiting plates are tightly attached to the fixed box (703).