CN209911188U - Sand dust concentration calibrating device - Google Patents

Abstract

The utility model relates to a sand concentration calibrating device, the power distribution box comprises a box body, the truckle is installed to the box bottom, install the dust and sand feeding hopper above the box, upper portion is fixed with the mounting bracket in the box, fixedly connected with vibrating pump, the sand hopper on the mounting bracket, the converter is installed to the mounting bracket front side, lower part rear side is provided with the sand calibration room in the box, lower part front side is provided with the fan in the box, the air outlet of fan links to each other with the sand calibration room, the discharge end of dust and sand feeding hopper connects the sand hopper through reinforced buffer plate, the discharge end of sand hopper is connected to the sand calibration room through the bellows, be provided with concentration sensor in the sand calibration room, be provided with control panel on the box front end face, control panel passes through the circuit and connects concentration sensor, the vibrating pump, the; compared with the prior art, the utility model, not only the practicality is very strong, receives environmental factor to influence lessly, and detection method is simple moreover, convenient operation, and the structure is very small and exquisite simultaneously, and it is convenient to remove.

Description

Sand dust concentration calibrating device

[ technical field ]

The utility model belongs to the technical field of the sand and dust concentration calibration technique and specifically relates to a sand and dust concentration calibration device.

[ background art ]

Currently, the existing dust box concentration sensor calibration requires placing the concentration sensor in a specific test environment, and requires knowing a basic range of dust concentration, and then calibrating with a calibration instrument. This calibration method is too limited and has the following disadvantages:

(1) actual field environment and known dust concentration range are necessary, and if the dust concentration range is not known per se, calibration cannot be completed or correction deviation is large;

(2) the amount of the sand dust is very unstable, the correction is very difficult, the detection mode is too complex, and a professional operator is required to operate the detection device;

(3) the calibration needs to be carried out by an instrument manufacturer, and correction coefficients under different wind speeds are uncertain.

[ contents of utility model ]

The utility model aims at solving foretell not enough and provide a sand and dust concentration calibrating device, not only the practicality is very strong, receives environmental factor to influence lessly, and detection method is simple moreover, convenient operation, and the structure is very small and exquisite simultaneously, and it is convenient to remove, and suitable place is wider.

In order to realize the aim, the sand concentration calibration device comprises a box body 8, a dust adding and sand adding hopper 1, a concentration sensor 2, a vibration pump 3, a fan 4, a control panel 5, trundles 6 and a frequency converter 7, wherein the trundles 6 are installed at the bottom end of the box body 8, the dust adding and sand adding hopper 1 is installed above the box body 8, a mounting frame 9 is fixed at the upper part in the box body 8, the mounting frame 9 is fixedly connected onto the inner wall of the box body 8, the vibration pump 3 and the sand hopper 10 are fixedly connected onto the mounting frame 9, the frequency converter 7 is installed at the front side of the mounting frame 9, a sand calibration chamber 11 is arranged at the rear side of the inner lower part of the box body 8, the fan 4 is arranged at the front side of the inner lower part of the box body 8, the fan 4 is connected with the frequency converter 7 through a line, an air outlet of the fan 4 is connected with the sand calibration chamber 11, a discharge end of, reinforced buffer board 12 links to each other with 3 tops of vibrating pump, the discharge end of sand and dust funnel 10 is connected to sand and dust calibration room 11 through bellows 13, be provided with consistency transmitter 2 in the sand and dust calibration room 11, consistency transmitter 2 fixes on box 8, be provided with control panel 5 on the terminal surface before the box 8, consistency transmitter 2, vibrating pump 3, fan 4, converter 7 are connected respectively to control panel 5 through the circuit.

Further, the mounting bracket 9 includes horizontal plate and vertical plate, the horizontal plate constitutes the T style of calligraphy with the vertical plate, horizontal plate fixed connection is on the back wall in the box 8, top in the box 8 is connected to the vertical plate fixed connection, vibrating pump 3, sand and dust funnel 10 are fixed on the horizontal plate, converter 7 is fixed on the vertical plate.

Further, the concentration sensor 2 is detachably connected to the box body 8 through a flange interface 14, the shell of the concentration sensor 2 is connected to the flange interface 14, and the test rod of the concentration sensor 2 extends into the sand and dust calibration chamber 11.

Compared with the prior art, the utility model, have following advantage:

(1) the utility model has strong practicability and is less influenced by environmental factors, and the correcting device can be conveniently moved to different places because of the integral structure, thereby not necessarily needing to be in a laboratory;

(2) the utility model has simple detection method, convenient operation, clear result and high reliability;

(3) the utility model integrates multiple functions, and the user can freely set the wind speed and the sand concentration (the sand concentration in unit time), thereby conveniently testing the accuracy and the correction value under various conditions;

(4) because the device structure is very small and exquisite, and be the flange butt joint mouth with dust concentration sensor, loading and unloading sensor that can be very convenient to for daily calibration has created the condition, avoid leading to producing too high labour cost by the calibration of instrument producer, and experimental interrupt.

[ description of the drawings ]

Fig. 1 is a schematic front structural view of the present invention;

fig. 2 is a left side schematic view of the present invention;

fig. 3 is a schematic top view of the present invention;

in the figure: 1. dust and sand adding hopper 2, concentration sensor 3, vibration pump 4, fan 5, control panel 6, truckle 7, converter 8, box 9, mounting bracket 10, sand and dust funnel 11, sand and dust calibration room 12, feeding buffer board 13, bellows 14, flange interface.

[ detailed description of the invention ]

The invention is further described below with reference to the accompanying drawings:

as shown in the attached drawings, the utility model comprises: the dust and sand adding box comprises a box body 8, a dust and sand adding hopper 1, a concentration sensor 2, a vibrating pump 3, a fan 4, a control panel 5, trundles 6 and a frequency converter 7, wherein the trundles 6 are installed at the bottom end of the box body 8, the dust and sand adding hopper 1 is installed above the box body 8, a mounting frame 9 is fixed at the upper part in the box body 8, the mounting frame 9 is fixedly connected to the inner wall of the box body 8, the vibrating pump 3 and the sand and dust hopper 10 are fixedly connected to the mounting frame 9, the frequency converter 7 is installed at the front side of the mounting frame 9, a sand and dust calibration chamber 11 is arranged at the rear side of the lower part in the box body 8, the fan 4 is arranged at the front side of the lower part in the box body 8, the fan 4 is connected with the frequency converter 7 through a circuit, an air outlet of the fan 4 is connected with the sand and dust calibration chamber 11, the discharge end of the dust and sand adding hopper 1, a concentration sensor 2 is arranged in the sand and dust calibration chamber 11, the concentration sensor 2 is fixed on a box body 8, a control panel 5 is arranged on the front end face of the box body 8, and the control panel 5 is connected with the concentration sensor 2, a vibration pump 3, a fan 4 and a frequency converter 7 through lines respectively.

The mounting rack 9 comprises a horizontal plate and a vertical plate, the horizontal plate and the vertical plate form a T shape, the horizontal plate is fixedly connected to the inner rear wall of the box body 8, the vertical plate is fixedly connected to the inner top of the box body 8, the vibration pump 3 and the sand-dust hopper 10 are fixed on the horizontal plate, and the frequency converter 7 is fixed on the vertical plate; concentration sensor 2 passes through flange interface 14 detachable connection on box 8, and concentration sensor 2's casing is connected on flange interface 14, and concentration sensor 2's test bar extends in dust calibration room 11 to can load and unload concentration sensor very conveniently, thereby for daily calibration creation condition, avoid leading to producing too high labour cost and experimental interrupt by the calibration of instrument producer.

The utility model discloses a theory of operation does: firstly, ensuring that the ambient temperature is at normal temperature, ensuring that the humidity is as close to the ambient humidity as possible, firstly creating a proper temperature and humidity environment, then creating a required wind speed environment through a fan on the device, quantitatively adding the parts of sand or dust through a charging controller, then adding the set amount of sand or dust through the vibration of an air pump, uniformly blowing the vibrated sand or dust through a dust blowing fan to pass through a concentration sensor, comparing the data displayed on the concentration sensor with the amount of the actually added dust, and reversely verifying the accuracy measured by the concentration sensor. By adopting the calibration device, the detected display numerical value and the actually falling dust value can be obviously in one-to-one correspondence, namely the accuracy of the concentration sensor is verified, and if the deviation exists, the appropriate correction can be carried out.

The utility model discloses a formula and setting can be according to W H V SV T M, in the formula, W is calibrating device air outlet length (unit: M), H is calibrating device air outlet width (unit: M), V is the wind speed of blowing sand or blowing dirt (unit: M/S), SV is required calibration point concentration (g/M3), T is the time of unit operation (unit: S), M is the sand or the dirt content (unit: g) that need fall when reaching the required concentration in the unit time. Examples are: calibrating a dust concentration sensor: 10.6g/m3, the cross-sectional area of the calibration device is: s is 0.4 x 0.04 x 0.016m, and the dust blowing wind speed of the dust blowing fan is as follows: 9m/S, from which the volume V ═ S ═ μ ═ 0.016 ═ 9 ═ 0.144m can be calculated³If 10.6g/m3 per second is to be guaranteed, V H0.144 60 10.6 91.584 g. 91.584g of dust needs to be added into a calibration device at a constant speed within one minute, and then the dust is blown away through a fixed wind speed, so that a sand-dust concentration environment under a constant wind speed is simulated, and the sensors can be ensured to be detected completely, so that the sensors can be corrected under the known sand-dust concentration, and when the numerical values of the sensors are stable, the sensors are required to be displayed to be consistent with the known concentration; when the concentration of different wind speeds is required to be set, the effect of changing the wind speed and the wind volume can be achieved only by changing the frequency of the fan at the frequency converter, and the method is very simple and convenient.

The present invention is not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and are all included in the protection scope of the present invention.

Claims (3)

1. The utility model provides a sand and dust concentration calibrating device, includes box (8), adds dirt and adds sand hopper (1), concentration sensor (2), vibrating pump (3), fan (4), control panel (5), truckle (6), converter (7), its characterized in that: truckles (6) are installed at the bottom end of the box body (8), a dust-adding sand-adding hopper (1) is installed above the box body (8), a mounting frame (9) is fixed to the inner upper portion of the box body (8), the mounting frame (9) is fixedly connected to the inner wall of the box body (8), a vibration pump (3) and a sand-dust hopper (10) are fixedly connected to the mounting frame (9), a frequency converter (7) is installed on the front side of the mounting frame (9), a sand-dust calibration chamber (11) is arranged on the rear side of the inner lower portion of the box body (8), a fan (4) is arranged on the front side of the inner lower portion of the box body (8), the fan (4) is connected with the frequency converter (7) through a circuit, an air outlet of the fan (4) is connected with the sand-dust calibration chamber (11), the discharge end of the dust-adding sand-adding hopper (1) is connected with the sand-dust hopper (10) through, the discharge end of sand dust funnel (10) is connected to sand dust calibration room (11) through bellows (13), be provided with consistency transmitter (2) in sand dust calibration room (11), consistency transmitter (2) are fixed on box (8), be provided with control panel (5) on the terminal surface before box (8), consistency transmitter (2), vibrating pump (3), fan (4), converter (7) are connected respectively through the circuit in control panel (5).

2. The sand dust concentration calibration apparatus according to claim 1, wherein: mounting bracket (9) include horizontal plate and vertical plate, the horizontal plate constitutes the T style of calligraphy with the vertical plate, horizontal plate fixed connection is on the back wall in box (8), top in vertical plate fixed connection box (8), vibrating pump (3), dust hopper (10) are fixed on the horizontal plate, converter (7) are fixed on the vertical plate.

3. The sand dust concentration calibration apparatus according to claim 1 or 2, wherein: the concentration sensor (2) is detachably connected to the box body (8) through a flange interface (14), the shell of the concentration sensor (2) is connected to the flange interface (14), and the test rod of the concentration sensor (2) extends into the sand and dust calibration chamber (11).

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