Alcohol detector calibrating device

Abstract

The invention relates to the technical field of alcohol detector verification, and discloses an alcohol detector verification device which is composed of an air inlet and a heating bin, a movable piston is arranged in the heating bin, the overall appearance of the piston is cylindrical, and the outer wall of the piston is attached to the inner wall of the heating bin in a sealed mode; a piston is arranged in the heating bin, a moving rod is arranged at the end, close to the air inlet, of the piston and used for controlling the piston to move in the heating bin, a cooling water pipe is embedded in the piston, grooves allowing air to pass through are evenly formed in the piston, a right sliding block and a left sliding block are arranged on the two sides of the cooling water pipe, and the left sliding block and the right sliding block are detachably arranged. By arranging the left sliding block and the right sliding block in the piston, internal gas is pushed to be completely exhausted, new standard alcohol gas can pass through, and the situation that measurement is inaccurate due to the fact that the new standard alcohol gas and the old standard alcohol gas are mixed is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of alcohol detector calibration, and in particular to a calibration device for an alcohol detector. Background Art

[0002] The alcohol detector is a tool used by traffic police for law enforcement. It is a measuring instrument that needs to be calibrated by the metrology department and obtain a calibration certificate to be legal. In the process of traffic police law enforcement, it can effectively reduce the occurrence of major traffic accidents. It can also be used in other occasions to detect the alcohol content in human exhaled gas to avoid casualties and major property losses, such as some high-risk areas where companies and jobs prohibit people from working after drinking.

[0003] Referring to a patent disclosure of an alcohol detector calibration device and an alcohol detector calibration method (authorization announcement number: CN107192833A), it is described that "the present invention discloses an alcohol detector calibration device and an alcohol detector calibration method, including a constant temperature cabinet, wherein the constant temperature cabinet is respectively loaded with a plurality of internal steel cylinders of different specifications containing different standard alcohol gases, an electromagnetic valve is provided on the outside of the internal steel cylinder, and the electromagnetic valve is controlled by the whole machine control unit. An external steel cylinder is also provided on the outside of the constant temperature cabinet, a heating chamber is provided inside the constant temperature cabinet for heating and maintaining a constant temperature of the air in the constant temperature cabinet, and a temperature sensor is provided inside the constant temperature cabinet for measuring the air temperature in the constant temperature cabinet".

[0004] The alcohol detector calibration device is measured by different standard alcohol gases. During the continuous measurement process, there will be residual gas from the previous calibration in the pipeline. When used again, the new standard alcohol gas will be mixed with the residual standard alcohol gas in the pipeline. If it is not used for a long time, the measurement accuracy will be affected during the measurement process. Since the standard alcohol gas needs to simulate the human body temperature when exhaled, which is about 34°C, the standard alcohol gas needs to be heated and temperature controlled. Excessive temperature may cause measurement errors during the measurement process of the alcohol detector. Summary of the invention

[0005] The present application proposes an alcohol detector calibration device, which has the advantages of being able to evacuate the air in the pipeline and prevent overheating, so as to solve the problem of new standard alcohol gas mixing with the old standard alcohol gas remaining in the pipeline, and also solves the problem of overheating caused by heating the gas in the pipeline.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an alcohol detector calibration device, comprising: an air inlet and a heating chamber, a movable piston is arranged inside the heating chamber, the overall appearance of the piston is cylindrical, and a moving rod is provided at one end of the piston close to the air inlet for controlling the power input of the reciprocating movement of the piston in the heating chamber, the piston is composed of a fixed part and a movable part, three fixed parts are provided and arranged in a ring array on the circumference of the moving rod, a movable part is embedded between two adjacent fixed parts, the movable part is adapted and combined into a fan-shaped plate by a left slider and a right slider, and the combined fan-shaped plate can just adapt to the fan-shaped gap between the two fixed parts, the inner wall of the heating chamber is provided with a groove, the groove path is triangular, and the groove is arranged in a ring array in the heating chamber, the left slider and the right slider are provided with a protrusion at the top and the protrusion is embedded in the corresponding groove, the protrusion will move in a triangular shape in the groove with the reciprocating movement of the piston, and control the opening and closing of the left and right sliders.

[0007] Preferably, when the left and right sliders are fully embedded in the piston and in an open state, the side edge of the fixed portion of the piston is on the same generatrix as the position of the bump and is provided with completely identical bumps, which are used for sliding the sealing groove.

[0008] Preferably, a cooling water pipe is embedded in the movable part of the piston, and two sides of the cooling water pipe are sleeved between the left slider and the right slider relative to the piston.

[0009] Preferably, the movable rod is internally provided with a water inlet and a water outlet connected to a cooling water pipe for circulating coolant in the cooling water pipe, thereby achieving the effect of cooling down the overheated gas in the pipe.

[0010] Preferably, an avoidance groove is provided inside the left sliding block, so as to facilitate avoiding the cooling water pipe during movement.

[0011] Furthermore, a tappet is provided below the moving rod on one side of the piston, which is used to connect to the motor to control the moving rod to push the internal piston to reciprocate.

[0012] The beneficial effects of the present invention are as follows: The present application provides an alcohol detector calibration device, which achieves the effect of completely discharging the standard alcohol gas in the heating chamber by providing a piston in the heating chamber.

[0013] A groove with a triangular path is provided on the inner wall of the heating chamber to facilitate the engagement with the protrusions on the upper ends of the left and right sliders. The protrusions will move along the triangular path in the groove, thereby controlling the movement of the left and right sliders.

[0014] By sealing the slider between the cooling water pipe and the left slider, the standard alcohol gas will not remain between the cooling water pipe and the left slider. When the left slider is closed, the standard alcohol gas inside the cooling water pipe will be discharged, resulting in no gas remaining between the cooling water pipe and the left and right sliders.

[0015] The piston is provided with slots with equal spacing, which facilitates the standard alcohol gas to pass through the inside of the piston without generating a lot of noise, and the standard alcohol gas can pass through quickly.

[0016] By arranging left and right sliders inside the piston, the internal gas can be completely discharged, and new standard alcohol gas can pass through, so that the new and old standard alcohol gases will not mix and cause inaccurate measurement.

[0017] A cooling water pipe is provided in the center of the piston to prevent the gas in the heating chamber from being heated again when the temperature in the heating chamber is too high, thereby cooling the standard alcohol gas in the heating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work: Figure 1 is a side view of the present invention; Figure 2 is a side sectional view of the present invention; Figure 3 For the present invention Figure 2 A local enlarged view of point A; Figure 4 This is a schematic diagram of the piston opening of the present invention; Figure 5 This is a schematic diagram of the piston of the present invention when it is closed; Figure 6 An exploded overview of the piston of the present invention; Figure 7 It is a partial cross-sectional view of the piston of the present invention; Figure 8 It is a schematic diagram of the cooling control principle of the cooling water pipe of the present invention.

[0019] In the figure: 1. air inlet; 2. heating chamber; 3. piston; 4. cooling water pipe; 5. right slider; 6. left slider; 7. sealing slider; 8. groove; 9. bump; 10. push rod; 11. moving rod; 12. pressure spring; 13. water inlet pipe; 14. water outlet pipe; 15. air outlet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1, as Figure 1 , Figure 2 , Figure 7 As shown, the heating chamber 2 is cylindrical as a whole, and an air outlet 15 is provided at one end. A pressure spring 12 is provided between the air outlet 15 and the heating chamber 2. Two holes are provided at the other end of the heating chamber 2. The hole provided in the middle of the heating chamber 2 is used to fix the moving rod 11 on the piston 3. The piston 3 is slidably connected in the heating chamber 2. A tappet 10 is provided under the moving rod 11. The tappet 10 is driven by a motor to drive the moving rod 11 to move, and the piston 3 will also move with the movement of the moving rod 11. The piston 3 consists of a fixed part and a movable part. The fixed part is provided with three and is arranged in a circular array on the circumference of the moving rod 11. The fixed part between two adjacent fixed parts A movable part is embedded in the space between the two fixed parts, and the movable part is adapted and combined into a fan-shaped plate by the left slider 6 and the right slider 5. The combined fan-shaped plate can just fit the fan-shaped gap between the two fixed parts. The inner wall of the heating chamber 2 is provided with a groove 8, and the path of the groove 8 is triangular. The grooves 8 are arranged in a ring array in the heating chamber 2. The top of the left slider 6 and the right slider 5 is provided with a protrusion 9 and the protrusion 9 is embedded in the corresponding groove 8. The protrusion 9 will move in a triangular shape in the groove 8 with the reciprocating movement of the piston 3. In the pushing stage, the protrusion 9 enters the triangular fold line segment, and in the return stage, the protrusion 9 enters the triangular straight line segment (the generatrix direction of the heating chamber), controlling the opening and closing of the left and right sliders. When the piston 3 pushes forward, the left and right sliders are closed, and when the piston 3 returns, the left and right sliders are opened.

[0022] Also, see Figure 4 When the left and right sliders are fully embedded in the piston 3 and are in the open state, the side edge of the fixed part of the piston 3 is on the same generatrix as the position of the protrusion 9 and is provided with completely identical protrusions, which are used for sliding the sealing groove 8.

[0023] As a result, the piston 3 pushes the standard alcohol gas in the heating chamber 2 to simulate the exhaled gas of the human body. During the return journey, new standard alcohol gas is added to the heating chamber 2, which can effectively cut off the mixing of the new and old standard gases, thereby achieving rapid and continuous calibration operations.

[0024] Embodiment 2, as Figure 3-Figure 6As shown, the interior of the moving rod 11 is in a hollow state, and there are pipes inside, namely, a water inlet pipe 13 and a water outlet pipe 14 for cooling circulation. The cooling water pipe 4 is embedded in the movable part of the piston, located between two adjacent fixed parts. For specific positions, please refer to Figure 6 The left slider 6 and the right slider 5 are sleeved on both sides of the cooling water pipe 4 relative to the piston 3. The left slider 6 and the right slider 5 can be combined together. A sealing slider 7 is provided between the left slider 6 and the cooling water pipe 4 to prevent the standard alcohol gas from entering the slider and causing the mixing of new and old gases. The sealing slider 7 is fixedly arranged at the straight pipe position of the cooling water pipe 4 and is slidably sleeved in the left slider 6.

[0025] The cooling water pipe 4 is arranged between the two fixed parts. When the standard gas is replenished during the return journey, the cooling circulating liquid can be started according to the situation to cool down the overheated heating chamber 2 in time and quickly.

[0026] Embodiment three, as Figure 8 As shown, a temperature sensor is provided inside the heating chamber 2 (the specific position is not indicated in this figure, and any position that can detect the real-time temperature in the heating chamber 2 is acceptable). When the temperature inside the heating chamber 2 is greater than 34°C, the sensor information will be transmitted to the PLC control end, and the PLC control end will turn on the water pump motor to circulate water into the cooling water pipe 4, enter from the water inlet pipe 13 in the moving rod 11, forming a cycle, and then flow out from the water outlet pipe 14 of the moving rod 11. When the gas temperature in the heating chamber is less than 34°C, a signal is transmitted to the PLC control end, and the PLC control end then transmits a stop signal to the motor, causing the water flow in the cooling water pipe 4 to stop circulating.

[0027] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An alcohol detector calibration device, comprising: An air inlet (1) and a heating chamber (2), wherein a movable piston (3) is provided inside the heating chamber (2), wherein the piston (3) is cylindrical in overall appearance, and a moving rod (11) is provided at one end of the piston (3) close to the air inlet (1) for controlling the power input of the piston (3) to reciprocate in the heating chamber (2), wherein the piston (3) is characterized in that: the piston (3) is composed of a fixed part and a movable part, wherein three fixed parts are provided and arranged in an annular array on the circumference of the movable rod (11), and a movable part is embedded between two adjacent fixed parts, and the movable part is composed of a left slider (6 ) and the right slider (5) are adapted to be combined into a fan-shaped plate, and the combined fan-shaped plate can just fit into the fan-shaped gap between the two fixed parts. The inner wall of the heating chamber (2) is provided with a groove (8), and the path of the groove (8) is triangular. The grooves (8) are arranged in a ring array in the heating chamber (2). The tops of the left slider (6) and the right slider (5) are provided with protrusions (9), and the protrusions (9) are embedded in the corresponding grooves (8). The protrusions (9) will move in a triangular shape in the grooves (8) as the piston (3) reciprocates, thereby controlling the opening and closing of the left and right sliders.

2. An alcohol detector calibration device according to claim 1, characterized in that: When the left slider (6) and the right slider (5) are completely embedded in the piston (3) and in an open state, the side edge of the fixed portion of the piston (3) and the position of the convex block (9) are located on the same generatrix and are provided with identical convex blocks (9). The convex blocks (9) are used for sliding the sealing groove (8).

3. The alcohol detector calibration device according to claim 1, characterized in that: A cooling water pipe (4) is embedded in the movable part of the piston (3), and two sides of the cooling water pipe (4) are sleeved between the left slider (6) and the right slider (5) relative to the piston (3).

4. The alcohol detector calibration device according to claim 3, characterized in that: The movable rod (11) is provided with a water inlet (13) and a water outlet (14) connected to the cooling water pipe (4) inside, and is used for the circulation of coolant in the cooling water pipe (4).

5. The alcohol detector calibration device according to claim 1, characterized in that: The left sliding block (6) has an avoidance groove inside, which facilitates avoiding the cooling water pipe (4) when moving.

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