Calibration device for micro differential pressure sensor

Abstract

The utility model discloses a calibration device for a micro differential pressure sensor, which comprises a calibration device body, a display meter, an air inlet pipe and an air outlet pipe are arranged on the calibration device body, one end of the air outlet pipe is fixedly connected with a filtering mechanism and a drying mechanism, and one ends, far away from the air inlet pipe, of the filtering mechanism and the drying mechanism are connected with a first connecting pipe. The first connecting pipe is connected with the display meter; the processing assembly comprises a processing box, one end of the processing box is fixedly connected with the air outlet pipe, and the other end of the processing box is fixedly connected with a second connecting pipe connected with the drying mechanism. According to the utility model, the processing assembly comprises an auxiliary pipe fixedly connected to the side wall of the processing box, and a partition plate arranged in the processing box. According to the dehumidification device, the processing assembly is arranged, hot air in the drying mechanism enters the drying cavity through the auxiliary pipe, the hot air flow heats the heat pipe after entering, the heating pipe is a plurality of continuous bent pipes made of metal materials, the contact between the hot air and the heat pipe can be increased, and therefore the dehumidification capacity is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field especially relates to a kind of calibration device for differential pressure sensor. BACKGROUND

[0002] In the process of measuring differential pressure, a calibration device for differential pressure sensor is often used to meet the requirements of information transmission, processing, storage, display, recording and control. Currently, in the process of measuring the small difference between two pressures, a differential pressure sensor is needed to measure the pressure difference between the two ends.

[0003] The existing device is affected by water vapor in the outside air during measurement, affecting the measurement accuracy, and causing incorrect results for the measured differential pressure. There are also corresponding calibration devices to handle external dust and steam, but in actual operation, it is found that the utilization rate of the drying mechanism in the calibration device is insufficient, and too much excess heat is lost, resulting in increased power consumption, which is not conducive to improving the rapid processing of the sensor and subsequent calibration work. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a calibration device for differential pressure sensor.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a calibration device for differential pressure sensor, comprising a calibration device body, a display table, an air inlet pipe and an air outlet pipe are arranged on the calibration device body, a filter mechanism and a drying mechanism are fixedly connected to one end of the air outlet pipe, a first connecting pipe is connected to the end of the filter mechanism and the drying mechanism away from the air inlet pipe, and the first connecting pipe is connected to the display table; further comprising a processing assembly, the processing assembly comprises a processing box, one end of the processing box is fixedly connected to the air outlet pipe, and the other end of the processing box is fixedly connected to a second connecting pipe connected to the drying mechanism.

[0006] As a further description of the above technical scheme: the processing assembly comprises a sub-pipe fixedly connected to the side wall of the processing box, and a partition plate arranged in the processing box, the sub-pipe and the processing box are in communication, the partition plate divides the processing box into a drying cavity and a dust guide cavity, a heating pipe is arranged in the drying cavity, one end of the heating pipe is connected to the processing box, and the other end of the heating pipe is connected to the dust guide cavity.

[0007] As a further description of the above technical scheme: a filter screen is fixedly connected in the dust guide cavity, the filter screen is in an inclined state, and an opening is formed in the bottom of the dust guide cavity.

[0008] As a further description of the above technical solution: the opening is fixedly connected with a limiting frame at the edge, a dust box is slidingly limited in the limiting frame, and the dust box is located below the opening.

[0009] As a further description of the above technical solution: the heating pipe is a plurality of continuous curved pipes made of metal material, and the distance between the bottom end of the filter screen and the partition plate is smaller than the distance between the top end of the filter screen and the partition plate.

[0010] As a further description of the above technical solution: a fixing rod is fixedly connected to the filter screen, the fixing rod penetrates through the partition plate and moves in the partition plate, one end of the fixing rod is fixedly connected with a baffle, and the baffle is aligned with the communication position of the auxiliary pipe and the processing box.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, the calibration device for a micro differential pressure sensor, by setting the processing assembly, when in use, hot air in the drying mechanism enters the drying cavity through the auxiliary pipe, the hot air flow heats the heat pipe after entering, by setting the heating pipe as a plurality of continuous curved pipes made of metal material, the contact between the hot air and the heat pipe can be increased, thereby further improving the dehumidification capacity, and the utility model increases the processing mechanism in the prior art drying mechanism, which can perform secondary dust removal and dehumidification operation on the gas, thereby improving the utilization rate.

[0013] 2. Compared with the prior art, the calibration device for a micro differential pressure sensor, by setting the fixing rod on the filter screen, and the fixing rod is provided with a baffle at one end, when the gas flow enters the drying cavity through the auxiliary pipe, the gas flow blows the baffle, so that the fixing rod drives the filter screen to shake, thereby facilitating the dust on the filter screen to fall off, further reducing the accumulation, and reducing the maintenance and cleaning period.

[0014] 3. Compared with the prior art, the calibration device for a micro differential pressure sensor, by setting the filter screen to be inclined, the dust is blocked by the filter screen, after stopping working, the dust can slide down on the inclined filter screen surface, thereby reducing the dust accumulation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a first perspective three-dimensional structure schematic diagram of the calibration device for a micro differential pressure sensor proposed by the utility model;

[0016] Figure 2 It is a second perspective three-dimensional structure schematic diagram of the calibration device for a micro differential pressure sensor proposed by the utility model;

[0017] Figure 3 It is a third perspective three-dimensional structure schematic diagram of the calibration device for a micro differential pressure sensor proposed by the utility model;

[0018] Figure 4 A fourth perspective view of the calibration device for a differential pressure sensor according to the present application is shown in the figure.

[0019] Figure 5 A Figure 2 enlarged view of position A in the middle;

[0020] Figure 6 A Figure 3 enlarged view of position B in the middle;

[0021] Figure 7 A Figure 4 enlarged view of position C in the middle.

[0022] Legend:

[0023] 1, calibration device body; 2, display table; 3, air inlet pipe; 4, air outlet pipe; 5, filtering mechanism; 6, drying mechanism; 7, first connecting pipe; 8, second connecting pipe; 9, processing box; 10, auxiliary pipe; 11, drying cavity; 12, dust guide cavity; 13, heat pipe; 14, partition; 15, opening; 16, ash box; 17, limiting frame; 19, filter screen; 20, fixed rod; 21, baffle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] With reference to Figures 1-7 , the present application provides a calibration device for a differential pressure sensor: the calibration device body 1 is provided with a display table 2, an air inlet pipe 3 and an air outlet pipe 4, one end of the air outlet pipe 4 is fixedly connected with a filtering mechanism 5 and a drying mechanism 6, the above mechanisms are prior art and will not be described in detail here, and a fan can be arranged between the drying mechanism 6 and the auxiliary pipe 10, the filtering mechanism 5 and the drying mechanism 6 are connected with a first connecting pipe 7 at an end away from the air inlet pipe 3, and the first connecting pipe 7 is connected with the display table 2; further comprising a processing assembly, the processing assembly comprises a processing box 9, one end of the processing box 9 is fixedly connected with the air outlet pipe 4, and the other end of the processing box 9 is fixedly connected with a second connecting pipe 8 connected with the drying mechanism 6.

[0026] The processing assembly comprises a sub-pipe 10 fixedly connected to the side wall of the processing box 9, and a partition plate 14 arranged in the processing box 9, the sub-pipe 10 and the processing box 9 are in communication, and the partition plate 14 divides the processing box 9 into a drying cavity 11 and a dust guide cavity 12, the drying cavity 11 is provided with a heating pipe 13, one end of the heating pipe 13 is connected with the processing box 9, and the other end of the heating pipe 13 is connected with the dust guide cavity 12, the dust guide cavity 12 is fixedly connected with a filter screen 19, the filter screen 19 is in an inclined state, an opening 15 is arranged at the bottom of the dust guide cavity 12, a limiting frame 17 is fixedly connected to the opening 15, a dust box 16 is slidingly arranged in the limiting frame 17, and the dust box 16 is located below the opening 15, through the processing assembly, when in use, hot air in the drying mechanism 6 enters the drying cavity 11 through the sub-pipe 10, the hot air flow heats the heating pipe 14 after entering, the heating pipe 13 is arranged as a plurality of metal continuous bending pipes, the contact between the hot air and the heating pipe 14 is increased, and therefore the dehumidification capacity is further improved, and the processing mechanism is arranged in the drying mechanism 6 in the prior art, so that the gas can be de-dusted and dehumidified twice.

[0027] The distance between the bottom end of the filter screen 19 and the partition plate 14 is less than the distance between the top end of the filter screen 19 and the partition plate 14, the filter screen 19 is arranged in an inclined mode, dust is blocked by the filter screen 19, after stopping working, the dust can slide down on the inclined surface of the filter screen 19, and therefore the dust accumulation is reduced.

[0028] The filter screen 19 is fixedly connected with a fixed rod 20, the fixed rod 20 penetrates through the partition plate 14 and is movable in the partition plate 14, one end of the fixed rod 20 is fixedly connected with a baffle 21, the baffle 21 is aligned with the communication position of the sub-pipe 10 and the processing box 9, the fixed rod 20 is arranged on the filter screen 19 and provided with the baffle 21 at one end, when the air flow enters the drying cavity 11 through the sub-pipe 10, the air flow blows the baffle 21, the fixed rod 20 drives the filter screen 19 to shake, and therefore the dust on the filter screen 19 is shaken off, the accumulation is further reduced, and the maintenance and cleaning period is reduced.

[0029] Working principle: when in use, the gas passes through the filtering mechanism 5 and the drying mechanism 6 through the air inlet pipe 3 firstly, then enters the processing mechanism through the second connecting pipe 8, and finally is discharged to the external pipeline through the air outlet pipe 4.

[0030] In the process, the hot air in the drying mechanism 6 passes through the sub-pipe 10 into the drying cavity 11, the hot air enters the heating pipe 14, by setting the heating pipe 13 is a plurality of metal material continuous bending pipe, can increase the contact of hot air and heating pipe 14, so as to further improve the dehumidification capacity, the utility model discloses a drying mechanism 6 in the prior art increases processing mechanism, can secondary dust removal and dehumidification operation to gas, by setting the fixed rod 20 on the filter screen 19, and the fixed rod 20 one end is provided with the baffle 21, when the airflow passes through the sub-pipe 10 into the drying cavity 11, the airflow will blow the baffle 21, make the fixed rod 20 drive filter screen 19 shake, thereby benefit to the dust on the filter screen 19 shake off, further reduce the accumulation, reduce the maintenance cleaning cycle.

[0031] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A calibration device for a differential pressure sensor, comprising a calibration device body (1), characterized in that: The calibration device body (1) is provided with a display table (2), an air inlet pipe (3) and an air outlet pipe (4), one end of the air outlet pipe (4) is fixedly connected with a filtering mechanism (5) and a drying mechanism (6), one end of the filtering mechanism (5) and the drying mechanism (6) away from the air inlet pipe (3) is connected with a first connecting pipe (7), the first connecting pipe (7) is connected with the display table (2); further comprising a processing assembly, the processing assembly comprises a processing box (9), one end of the processing box (9) is fixedly connected with the air outlet pipe (4), the other end of the processing box (9) is fixedly connected with a second connecting pipe (8) connected with the drying mechanism (6).

2. A calibration device for a differential pressure sensor according to claim 1, characterized in that: The processing assembly comprises a sub-pipe (10) fixedly connected to the side wall of the processing box (9), and a partition plate (14) arranged in the processing box (9), the sub-pipe (10) and the processing box (9) are in communication, the partition plate (14) divides the processing box (9) into a drying cavity (11) and a dust guide cavity (12), a heating pipe (13) is arranged in the drying cavity (11), one end of the heating pipe (13) is connected with the processing box (9), and the other end of the heating pipe (13) is connected with the dust guide cavity (12).

3. A calibration device for a differential pressure sensor according to claim 2, characterized in that: The dust guide cavity (12) is fixedly connected with a filter screen (19), the filter screen (19) is in an inclined state, and an opening (15) is formed in the bottom of the dust guide cavity (12).

4. A calibration device for a differential pressure sensor as claimed in claim 3, characterized in that: The opening (15) is fixedly connected with a limiting frame (17) along the mouth, a dust box (16) is limitedly slid in the limiting frame (17), and the dust box (16) is located below the opening (15).

5. A calibration device for a differential pressure sensor as claimed in claim 4, characterized in that: The heating pipe (13) is a plurality of continuous curved pipes made of metal, the distance between the bottom end of the filter screen (19) and the partition plate (14) is less than the distance between the top end of the filter screen (19) and the partition plate (14).

6. A calibration device for a differential pressure sensor as claimed in claim 5, characterized in that: A fixing rod (20) is fixedly connected to the filter screen (19), the fixing rod (20) penetrates through the partition plate (14) and moves in the partition plate (14), one end of the fixing rod (20) is fixedly connected with a baffle (21), and the baffle (21) is aligned with the communication position of the sub-pipe (10) and the processing box (9).

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