Granary air tightness detection device suitable for various granary types

Abstract

The utility model discloses a granary air tightness detection device suitable for various granary types. The granary air tightness detection device comprises a cabinet, the front surface of the cabinet is provided with a cabinet door, the back surface of the cabinet is provided with a blower nozzle, the blower nozzle is provided with a one-way valve, the one-way valve is connected with a connecting device used for adapting to ventilation openings of various granary types, and the one-way valve is communicated with the ventilation openings through the connecting device. The connecting device comprises a fixed clamp and a variable-diameter clamp, the variable-diameter clamp is communicated with the fixed clamp through a flexible pipeline, the variable-diameter clamp is provided with a semi-arc-shaped supporting body, a sealing strip used for enhancing the connectivity of the ventilation openings is fixed to the inner wall of the supporting body, and the two ends of the supporting body are connected with elastic bands matched with the ventilation openings of different sizes. According to the utility model, the case is arranged, so that the fan is convenient to move, the one-way valve is arranged, short-time pressure relief of the granary is avoided, the connecting device with the variable-diameter hoop is arranged, ventilation openings with different pipe diameters in various granary types are adapted, and rapid connection of the ventilation openings in the various granary types is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection device, especially to a kind of granary airtightness detection device suitable for multiple warehouse types. BACKGROUND

[0002] The airtightness of existing granary is detected by pressure decay method. Air is pressed into the warehouse by a fan (positive pressure detection) or extracted from the air-tight grain pile (negative pressure detection), the pressure inside and outside the warehouse (grain pile) is stopped after reaching the specified pressure difference, and the airtightness of the flat warehouse or grain pile is determined according to the time of pressure decay reaching the specified pressure difference.

[0003] The existing detection device has the following technical problems: first, the fan is large in size and inconvenient to move, and it is time-consuming and laborious to use; second, there is no interface suitable for multiple warehouse types, and it can only measure the airtightness of a specific warehouse type; third, after the inside and outside pressure reaches the specified pressure difference and stops, the fan itself has poor airtightness, which causes the pressure to drop rapidly and results in large measurement error; fourth, the detection time is long, and it takes a long time to press or extract air. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problems of the prior art and provides a granary airtightness detection device that is reasonably designed, easy to move, and suitable for multiple warehouse types.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A granary airtightness detection device suitable for multiple warehouse types includes a case, a box door is provided on the front of the case, a blast port is provided on the back of the case, a fan connected to the blast port and a power supply for powering the fan are installed in the case, the fan is connected to the blast port on the case through a connecting pipe, a pressure gauge for detecting the pressure in the granary is installed on the connecting pipe, characterized in that a one-way valve is installed at the blast port, a connecting device for adapting to multiple warehouse type vents is connected to the one-way valve, and the one-way valve is in communication with the vents through the connecting device; the connecting device includes a fixed clamp fixed to the blast port on the back of the case and a variable diameter clamp connected to the fixed clamp, the variable diameter clamp is in communication with the fixed clamp through a flexible pipe, the variable diameter clamp is provided with a semicircular support, a sealing strip for enhancing the jointability of the vents is fixed on the inner side wall of the support, and elastic bands for connecting to vents of different sizes are connected to both ends of the support.

[0007] The technical problems solved by the utility model can also be solved by the following technical solutions: the support is hinged by two arc segments, which can better match vents of different pipe diameters and different radii.

[0008] The technical problems to be solved by the utility model also can be realized through following technical scheme, the flexible pipeline is canvas air pipe or the cortex air pipe of corrugated shape.

[0009] The technical problems to be solved by the utility model also can be realized through following technical scheme, the four corners of the machine case are installed with the tumbler convenient for moving.

[0010] The technical problems to be solved by the utility model also can be realized through following technical scheme, the elastic band is the flat elastic band, increases the matching area of elastic band and pipe joint at the air vent, improves the sealing effect of the connecting place.

[0011] The technical problems to be solved by the utility model also can be realized through following technical scheme, the both ends of the support body are equipped with the buckle convenient for replacing the elastic band.

[0012] The technical problems to be solved by the utility model also can be realized through following technical scheme, the rear of the machine case is equipped with the hook for storing the reducing clamp.

[0013] The technical problems to be solved by the utility model also can be realized through following technical scheme, the fan is at least provided with two, one is high-power fan, and one is low-power fan.

[0014] Compared with prior art, the utility model discloses a machine case is equipped, and the fan is convenient to move, one-way valve is equipped, guarantees the sealing property of granary after blowing, avoids the short-time pressure relief of granary, and the connecting device with reducing clamp is equipped, adapts to the air vent of different sizes of pipe diameters in various warehouse types, realizes the quick connection of the air vent in various warehouse types, flexible pipeline is equipped, realizes the installation and storage of connecting device, need not to take down connecting device and can be quickly used, and the support body and elastic band are equipped, and the structure is simple, convenient to install, improves the installation flexibility of the device. ACCURACY OF DRAWINGS

[0015] Fig. 1 It is the structural diagram of the grain storehouse airtightness detection device suitable for various warehouse types of the utility model;

[0016] Fig. 2 It is the principle diagram of the grain storehouse airtightness detection device suitable for various warehouse types of the utility model;

[0017] Fig. 3 It is the structural diagram of the reducing clamp.

[0018] In the drawing: 1-grain storehouse, 2-air vent, 3-flexible pipeline, 4-machine case, 5-fan, 6-connecting pipe, 7-pressure gauge, 8-blowing port, 9-support body, 10-buckle, 11-elastic band, 12-fixed clamp, 13-reducing clamp. SPECIFIC IMPLEMENTATION

[0019] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0020] In the description of the utility model, it needs to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0021] Referring to Figs. 1-3 A kind of granary airtightness detection device suitable for multiple bin types, including cabinet 4, cabinet 4 front is equipped with cabinet door, cabinet 4 back is equipped with blast port 8, fan 5 and power supply for fan 5 are installed in cabinet with blast port 8, fan 5 is connected with blast port 8 on cabinet 4 by connecting pipe 6, connecting pipe 6 is installed with pressure gauge 7 for detecting pressure in granary, one-way valve is installed at blast port 8, one-way valve is connected with connecting device for adapting multiple bin type air vents 2, one-way valve is communicated with air vent 2 by connecting device, easy-to-move roller is installed at the four corners of cabinet 4, hook for receiving variable-diameter clamp is provided on the back of cabinet 4;The fan is at least two, one is high-power fan, one is low-power fan, the power of low-power fan is 1100W;

[0022] Connecting device for adapting multiple bin type air vents 2 is installed at blast port 8;The connecting device includes fixed clamp 12 fixed at the air vent of the back of cabinet and variable-diameter clamp 13 connected with fixed clamp 12, variable-diameter clamp 13 is communicated with fixed clamp 12 by flexible pipeline 3, flexible pipeline 3 is canvas air pipe or corrugated leather air pipe, variable-diameter clamp is provided with semicircular support body 9, sealing strip for enhancing the joint property at air vent is fixed on the inner side wall of support body 9, elastic band 11 for connecting with different size air vents 2 is connected at both ends of support body 9, elastic band 11 is flat elastic band.

[0023] The support body 9 is hinged by two arc segments, which can better match the air vents 2 of different pipe diameters and different radii.

[0024] Buckle 10 for facilitating replacement of elastic band is provided at both ends of support body 9, the buckle can also use the products disclosed in prior art or on the market.

[0025] The working process of the granary airtightness detection device suitable for various granaries is as follows:

[0026] Before detection, the variable-diameter clamp 13 is taken off from the hook at the back of the case, and then is installed at the ventilation opening 2 of the granary to be detected through the connecting device; when the connecting device is installed, the semicircular support body 9 of the variable-diameter clamp 12 is supported at the bottom of the ventilation opening 2, and then the elastic band 11 is tightly bound at the ventilation opening 2; through cooperation of the elastic band 11 and the sealing strip, the airtightness of the ventilation opening 2 is ensured.

[0027] During detection, the power cord is connected to the power supply, the fan 5 is powered on, the fan 5 draws the air in the granary out through the one-way valve, the connecting device and the ventilation opening 2, and the pressure condition in the granary is observed from the pressure gauge 7; when the pressure in the granary reaches about 500 Pa, the fan 5 is turned off, the exhaust pipe on the pressure gauge is released, and the time for the pressure to drop from 500 Pa to 250 Pa is recorded.

[0028] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this; any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A kind of silo airtightness detection device suitable for multiple bin type, including cabinet, the front of cabinet is equipped with cabinet door, the back of cabinet is equipped with blast opening, fan and power supply for fan are installed in cabinet and are connected with blast opening, fan is connected with blast opening on cabinet by connecting pipe, pressure gauge for detecting the pressure in silo is installed on connecting pipe, it is characterized in that, A one-way valve is installed at the air blowing port, and a connecting device for adapting to various types of air blowing ports is connected to the one-way valve, and the one-way valve is communicated with the air blowing port through the connecting device; The connecting device comprises a fixed clamp fixed at the air blowing port on the back of the machine box and a variable-diameter clamp connected with the fixed clamp, the variable-diameter clamp is communicated with the fixed clamp through a flexible pipeline, the variable-diameter clamp is provided with a semicircular support, a sealing strip for enhancing the joint property at the air blowing port is fixed on the inner side wall of the support, and elastic bands matched with air blowing ports of different sizes are connected at both ends of the support.

2. The grain bin airtightness detection device suitable for multiple bin types according to claim 1, characterized in that, The support is hinged by two arc-shaped segments.

3. The grain bin airtightness detection device of claim 1, wherein, The flexible pipeline is a canvas pipeline or a corrugated leather pipeline.

4. The grain bin airtightness detection device of claim 1, wherein, Rollers facilitating movement are installed at four corners of the machine box.

5. The grain bin airtightness detection device of claim 1, wherein, The elastic bands are flat elastic bands.

6. The grain bin airtightness detection device of claim 1, wherein, Buckles facilitating replacement of the elastic bands are arranged at both ends of the support.

7. The grain bin airtightness detection device of claim 1, wherein, Hooks for accommodating the variable-diameter clamp are arranged on the back of the machine box.

8. The grain bin airtightness detection device of claim 1, wherein, The air blower is provided with at least two air blowers, one is a high-power air blower, and the other is a low-power air blower.

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