CN220708997U - Air permeability detection device of flexible freight bag - Google Patents
Air permeability detection device of flexible freight bag Download PDFInfo
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- CN220708997U CN220708997U CN202322111007.8U CN202322111007U CN220708997U CN 220708997 U CN220708997 U CN 220708997U CN 202322111007 U CN202322111007 U CN 202322111007U CN 220708997 U CN220708997 U CN 220708997U
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- 238000001514 detection method Methods 0.000 title claims abstract description 168
- 230000035699 permeability Effects 0.000 title claims abstract description 62
- 238000007789 sealing Methods 0.000 claims abstract description 99
- 238000003825 pressing Methods 0.000 claims description 42
- 230000008054 signal transmission Effects 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000005056 compaction Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 230000009471 action Effects 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 6
- 235000013305 food Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of air permeability detection of flexible freight bags, and discloses an air permeability detection device of a flexible freight bag, wherein an upper detection cavity is fixedly arranged at the bottom of an electric push rod; the lower detection cavity is fixedly arranged at the upper part of the supporting plate; the upper rubber sealing body is fixedly arranged at the lower part of the upper detection cavity; the detection sample is placed at the upper part of the lower rubber sealing body; the lower part of the exhaust pipe is fixedly provided with an air flow sensor; the control cabinet is fixedly arranged at the bottom position of the rear side of the support frame, the display screen is fixedly arranged at the upper middle position of the control cabinet, the control module is fixedly arranged at the lower left side position of the display screen, and the operation module is fixedly arranged at the lower position of the control module. The utility model has the advantages that: 1. the convenient fixing and compacting of the detection sample are realized; 2. the automatic calculation of the air permeability of the test sample detected by the flexible freight bag is realized, and the accuracy of the air permeability detection of the test sample detected by the flexible freight bag is improved.
Description
Technical Field
The utility model belongs to the technical field of air permeability detection of flexible freight bags, and particularly relates to an air permeability detection device of a flexible freight bag.
Background
A flexible transport packaging container for flexible freight bags. The waterproof and dustproof radiation-resistant waterproof cloth has the advantages of being firm and safe, and has enough strength structurally. The flexible freight bags are convenient to assemble, disassemble and transport, so that the assembling and disassembling efficiency is obviously improved, and the flexible freight bags are developed rapidly in recent years. The flexible freight bag is generally woven by polyester fibers such as polypropylene, polyethylene and the like. Common flexible containers are divided into flexible containers for raw materials, medical flexible containers and flexible containers for foods.
The air permeability of the flexible freight bag is an important control index of the production quality of the flexible freight bag, and particularly has relatively high air permeability requirement for medical flexible freight bags and food flexible freight bags. In the production process of the flexible freight bags, the air permeability index is required to be detected and controlled after the plastic base cloth is woven, so that the flexible freight bags with different purposes are sewn, and meanwhile, the air permeability of the flexible freight bags is required to be detected and controlled after the flexible freight bag products are sewn. Because the air permeability index is not in accordance with the medical flexible freight bag and the food flexible freight bag, the transported food or medical products are easy to mold and deteriorate; the air permeability index for the bulk bag is characterized by air permeability. The air permeability detection process of flexible freight bags in the prior art is: clamping a square or round air permeability detection sample on a sample circular table (enough tension is adopted to enable the sample to be flat and not deformed when the sample is clamped), starting a fan to enable air to pass through the sample, adjusting air flow, enabling pressure drop to gradually approach a specified value and be stable for a certain time, and recording air flow; repeating the steps for detecting N times, and calculating the air permeability of the flexible freight bag sample by using an air permeability calculation formula. At present, the main technical problems existing in the detection of the air permeability of the flexible freight bag are as follows: 1. the existing clamp for clamping the sample is complex in structure and inconvenient in clamping operation; 2. the air permeability is calculated manually, and the calculation process is complicated and is easy to risk miscalculation. The inventor has developed a flexible freight bag air permeability detection device based on the technical problem that exists in the flexible freight bag air permeability testing process among the prior art, can solve the above-mentioned technical problem that exists among the prior art well.
Disclosure of Invention
The utility model aims to solve the technical problems in the background art, and provides the air permeability detection device for the flexible freight bag, which solves the problems that the structure of a clamp for clamping a sample is complex and the clamping operation is inconvenient in the existing air permeability detection device for the flexible freight bag, and simultaneously solves the problems that the calculation of the air permeability is performed manually, the calculation process is complex and the risk of calculation errors easily occurs.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a ventilation property detection device of flexible freight bag, includes support 1, backup pad 2, mount pad 3 and electric putter 4; the bracket 1 is U-shaped, and a supporting plate 2 is fixedly arranged in the middle of the bracket 1; the bottom of the mounting seat 3 is fixedly provided with an electric push rod 4, the mounting seat 3 is fixedly arranged at the upper part of the bracket 1, and the electric push rod 4 penetrates through the upper part of the bracket 1 to extend to the lower part of the bracket 1; the guide rods 5 are symmetrically arranged at two sides of the support plate 2, and the upper ends of the guide rods 5 are fixedly connected with the bottom of the support 1; the guide cylinders 6 are sleeved on the guide rods 5, and a fixed block 7 is fixedly arranged on the inner side of each guide cylinder 6; the upper detection cavity 8 is cylindrical, the upper part of the upper detection cavity is closed, the lower part of the upper detection cavity is opened, and the upper detection cavity 8 is fixedly arranged at the bottom position of the electric push rod 4; the lower detection cavity 9 is fixedly arranged at the upper part of the support plate 2; the pressure gauge 10 is fixedly arranged at the left side position of the upper part of the upper detection cavity 8, the air inlet pipe 11 is fixedly arranged at the right side position of the upper part of the upper detection cavity 8, and the electromagnetic valve 12 is arranged at the upper part of the air inlet pipe 11; the upper rubber sealing body 13 is fixedly arranged at the lower part of the upper detection cavity 8, the lower rubber sealing body 14 is fixedly arranged at the upper part of the lower detection cavity 9, and the upper rubber sealing body 13 and the lower rubber sealing body 14 are in ring shapes; the detection sample 15 is placed at the upper position of the lower rubber sealing body 14; an exhaust pipe 16 is fixedly arranged at the bottom position of the lower detection cavity 9, and the exhaust pipe 16 extends to the lower position of the support plate 2 through the support plate 2 body; an air flow sensor 17 is fixedly arranged at the lower part of the exhaust pipe 16; the control cabinet 18 is fixedly arranged at the bottom position of the rear side of the bracket 1, the display screen 19 is fixedly arranged at the upper middle position of the control cabinet 18, the start key 20 is fixedly arranged at the lower right position of the display screen 19, the stop key 21 is fixedly arranged at the lower position of the start key 20, the control module 22 is fixedly arranged at the lower left position of the display screen 19, and the operation module 23 is fixedly arranged at the lower position of the control module 22.
The telescopic rod of the electric push rod 4 is fixedly connected with the center of the upper part of the upper detection cavity 8; the maximum travel distance of the electric push rod 4 can enable the upper detection cavity 8 and the upper rubber sealing body 13 to be in butt joint and pressed with the lower detection cavity 8 and the lower rubber sealing body 14.
The inner side end surface of the fixed block 7 is fixedly connected with the outer surface of the upper detection cavity 8, and the fixed block 7 fixedly connects the upper detection cavity 8 with the guide rod 5 and the guide cylinder 6 into a whole.
The lower detection cavity 9 is cylindrical, the upper part of the lower detection cavity is opened, the lower part of the lower detection cavity is closed, the upper detection cavity 8 and the lower detection cavity 9 are correspondingly arranged up and down, and the sizes of the upper detection cavity 8 and the lower detection cavity 9 are equal.
The pressure gauge 10 is fixedly connected with the control module 22 and the display screen 19 through signal transmission lines.
The air inlet pipe 11 is fixedly connected with the outlet end of the blower through an air pipe and the electromagnetic valve 12, and the electromagnetic valve 12 is fixedly connected with the control module 22 through a signal transmission line; the solenoid valve 12 is used to control the outlet air volume of the blower.
The upper rubber sealing body 13 comprises a rubber sealing body 131, a first mounting groove 132 is formed in the upper end face of the upper rubber sealing body 131, and a pressing cylinder 133 is uniformly arranged on the lower end face of the rubber sealing body 131; the first mounting groove 132 is an annular groove.
The lower rubber sealing body 14 comprises a lower rubber sealing body 141, a second installation groove 142 is formed in the lower end face of the lower rubber sealing body 141, and a pressing round hole 143 is uniformly formed in the upper end face of the lower rubber sealing body 141.
The diameter of the pressing cylinder 133 is smaller than that of the pressing round hole 143, and the pressing cylinder 133 and the pressing round hole 143 are in up-down butt fit and pressing.
The air flow sensor 17 is fixedly connected with the control module 22 and the operation module 23 through signal transmission lines.
The display screen 19 is fixedly connected with the control module 22 and the operation module 23 through signal transmission lines, and the start key 20 and the stop key 21 are fixedly connected with the control module 22 through signal transmission lines.
The working process of the air permeability detection device of the flexible freight bag is as follows: firstly, 50 cm is cut 2 The detection sample 15 is placed on the upper part of the lower rubber sealing body 14; then, the start key 20 is pressed to enable the control cabinet 18 to be in an electrified state, at the moment, the control module 22 sends a control instruction for starting action to the electric push rod 4, the telescopic rod of the electric push rod 4 pushes the upper detection cavity 8 and the upper rubber sealing body 13 to move downwards, when the telescopic rod of the electric push rod 4 stretches out to the maximum stroke, at the moment, the upper detection cavity 8 and the upper rubber sealing body 13 are in butt joint with the lower detection cavity 9 and the lower rubber sealing body 14 to be tightly pressed, and meanwhile, the compaction cylinder 133 of the upper rubber sealing body 13 is matched with the compaction round hole 143 of the lower rubber sealing body 14 to be sleeved and connected with the detection sample 15 to be tightly pressed, so that the detection sample 15 is in a tensioning and flattening state; simultaneously, the control module 22 sends a control instruction of opening to the electromagnetic valve 12, the blower conveys high-pressure gas into the upper detection cavity 8 and the lower detection cavity 9 through the air inlet pipe 11, the high-pressure gas is discharged from the exhaust pipe 16 through the detection sample 15, when the discharged gas passes through the air flow sensor 17, the air flow value record of the exhaust pipe 16 detected by the air flow sensor 17 is stored in the operation module 23, and meanwhile, the air flow value detected by the air flow sensor 17 is displayed in the display screen 19; the ventilation detection process is performed N times, the air flow value record is stored in the operation module 23, and the operation module 23 calculates the formula according to the ventilation rate: air permeability (R) =n times average gas flow [ ] v ) The air permeability of the detection sample 15 is calculated by the conversion coefficient (167) of the detection sample area (A), and the calculated specific air permeability value is displayed on the display screen 19; finally, the worker fills out the air permeability report of the detection sample 15 to complete the air permeability detection process.
In the air permeability calculation formula of the air permeability detection device of the flexible freight bag in the working process, R represents air permeability and N times of average air flow rate is calculated v ) Average gas flow rate indicating the number of times of detection of the detection sample 15, and detection sample area a indicates the cutting area of the detection sample 2 The method comprises the steps of carrying out a first treatment on the surface of the The scaling factor 167 is a scaling constant.
The guide rods 5 are symmetrically arranged at two sides of the support plate 2, and the upper ends of the guide rods 5 are fixedly connected with the bottom of the support 1; the guide cylinders 6 are sleeved on the guide rods 5, and fixing blocks 7 are fixedly arranged on the inner sides of the guide cylinders 6. The main purpose of this arrangement is: under the action of the up-down expansion of the electric push rod 4, the guide rod 5 is matched with the guide cylinder 6, so that the upper detection cavity 8 and the upper rubber sealing body 13 can generate accurate and vertical up-down movement, on one hand, the function of guiding the upper detection cavity 8 is achieved, on the other hand, the accurate alignment of the upper detection cavity 8, the upper rubber sealing body 13, the lower detection cavity 9 and the lower rubber sealing body 14 is realized, and finally, the air permeability detection sample of the flexible freight bag is pressed, tensioned, flattened and fixed.
The upper detection cavity 8 is fixedly arranged at the bottom of the electric push rod 4; the lower detection cavity 9 is fixedly arranged at the upper part of the support plate 2; the pressure gauge 10 is fixedly arranged at the left side position of the upper part of the upper detection cavity 8, the air inlet pipe 11 is fixedly arranged at the right side position of the upper part of the upper detection cavity 8, and the electromagnetic valve 12 is arranged at the upper part of the air inlet pipe 11; the upper rubber sealing body 13 is fixedly arranged at the lower position of the upper detection cavity 8, the lower rubber sealing body 14 is fixedly arranged at the upper position of the lower detection cavity 9, and the upper rubber sealing body 13 and the lower rubber sealing body 14 are in ring shapes. The arrangement of the upper detection cavity 8, the lower detection cavity 9, the rubber sealing body 13 and the lower rubber sealing body 14 provides a closed space for detecting the air permeability of the detection sample 15; on the other hand, the detection sample 15 is fixed and tightly supported by the vertical press fit of the pressing cylinder 133 of the upper rubber sealing body 13 and the pressing round hole 143 of the lower rubber sealing body 14, and the sealing function is also achieved. The size of the gas conveyed in the upward detection cavity 8 and the downward detection cavity 9 can be controlled through the arrangement of the air inlet pipe 11 and the electromagnetic valve 12, and the pressure gauge 10 is used for detecting the pressure of the gas in the upward detection cavity 8 and the downward detection cavity 9 in real time.
The exhaust pipe 16 is fixedly arranged at the bottom position of the lower detection cavity 9, and the exhaust pipe 16 extends to the lower position of the support plate 2 through the support plate 2 body; an air flow sensor 17 is fixedly provided at the lower part of the exhaust pipe 16. The main purpose of this arrangement is: by providing the air flow sensor 17, the value of the amount of gas discharged from the exhaust pipe 16 can be detected in real time, and the air permeability of the detection sample 15 can be calculated by the calculation module 23 (based on the calculation formula of the air permeability) using the detected air flow value and the known amount of the detection sample 15.
The control module 22 is fixedly arranged at the lower left part of the display screen 19, and the operation module 23 is fixedly arranged at the lower part of the control module 22; the pressure gauge 10 is fixedly connected with the control module 22 and the display screen 19 through signal transmission lines; the air flow sensor 17 is fixedly connected with the control module 22 and the operation module 23 through signal transmission lines; the display 19 is fixedly connected with the control module 22 and the operation module 23 through signal transmission lines, and the start key 20 and the stop key 21 are fixedly connected with the control module 22 through signal transmission lines. The main purpose of this arrangement is: on the one hand, the automatic control of the opening and closing and the opening degree of the electric push rod 4 and the electromagnetic valve 12 is realized through the control module 22; on the other hand, the real-time detection control of the gas pressure in the upper detection cavity 8 and the lower detection cavity 8 is realized; on the other hand, not only is the detection of the air flow rate discharged from the exhaust pipe 16 realized by the control module 22 and the operation module 23, but also the air permeability of the transmission detection sample 15 is obtained by the cooperation operation of the operation module 23, and the specific value of the air permeability is displayed on the display screen 19.
The upper rubber sealing body 13 comprises a rubber sealing body 131, a first mounting groove 132 is formed in the upper end face of the upper rubber sealing body 131, and a pressing cylinder 133 is uniformly arranged on the lower end face of the rubber sealing body 131; the first mounting groove 132 is an annular groove; the lower rubber sealing body 14 comprises a lower rubber sealing body 141, a second installation groove 142 is formed in the lower end face of the lower rubber sealing body 141, and a pressing round hole 143 is uniformly formed in the upper end face of the lower rubber sealing body 141. The main purpose of this arrangement is: under the pushing action of the electric push rod 4, the function of fixing, compressing, tensioning and flattening the detection sample 15 is achieved through the cooperation of the compressing column 133 and the compressing round hole 143; on the other hand, the sealing effect is very good.
The utility model has the beneficial effects that: 1. the electric push rod, the upper detection cavity, the lower detection cavity, the upper rubber sealing body and the lower rubber sealing body are arranged, so that the detection sample is conveniently fixed and pressed; 2. through electric putter, go up detection chamber, lower detection chamber, go up the rubber seal body, lower rubber seal body, control module, operation module and air flow sensor's setting, realized the automatic calculation to flexible freight bag detection sample air permeability, improved the accuracy that the flexible freight bag detected sample air permeability and detected.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged view of the layout of the upper and lower detection chambers of the present utility model;
FIG. 3 is a schematic view of the structure of the upper rubber seal body of the present utility model;
FIG. 4 is a schematic view of the bottom structure of the lower rubber seal of the present utility model;
FIG. 5 is a schematic view showing the upper structure of the lower rubber sealing body of the present utility model;
the marks in the figure: 1. the device comprises a bracket, 2, a supporting plate, 3, a mounting seat, 4, an electric push rod, 5, a guide rod, 6, a guide cylinder, 7, a fixed block, 8, an upper detection cavity, 9, a lower detection cavity, 10, a pressure gauge, 11, an air inlet pipe, 12, an electromagnetic valve, 13, an upper rubber sealing body, 131, an upper rubber sealing body, 132, a first mounting groove, 133, a compression cylinder, 14, a lower rubber sealing body, 141, a lower rubber sealing body, 142, a second mounting groove, 143, a compression round hole, 15, a detection sample, 16, an exhaust pipe, 17, an air flow sensor, 18, a control cabinet, 19, a display screen, 20, a start key, 21, a stop key, 22, a control module, 23 and an operation module.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the drawings.
The utility model provides a ventilation property detection device for a flexible freight bag, which comprises:
as shown in fig. 1 or fig. 2, an electric push rod 4 is fixedly arranged at the bottom of the mounting seat 3, the mounting seat 3 is fixedly arranged at the upper part of the bracket 1, and the electric push rod 4 extends to the lower part of the bracket 1 through the upper part of the bracket 1. The electric push rod 4 is installed at the upper position of the bracket 1 through the installation of the installation seat 3, and the control action of the electric push rod 4 realizes the automatic telescopic action through the control module 22.
As shown in fig. 1 or fig. 2, the guide rods 5 are symmetrically arranged at two sides of the support plate 2, and the upper ends of the guide rods 5 are fixedly connected with the bottom of the bracket 1; the guide cylinders 6 are sleeved on the guide rods 5, and fixing blocks 7 are fixedly arranged on the inner sides of the guide cylinders 6. Through the arrangement of the guide rod 5 and the guide cylinder 6, under the up-and-down telescopic action of the electric push rod 4, the guide rod 5 and the guide cylinder 6 are matched at the same time, so that the upper detection cavity 8 and the upper rubber sealing body 13 can generate accurate and vertical up-and-down movement action, and the accurate alignment of the upper detection cavity 8, the upper rubber sealing body 13, the lower detection cavity 9 and the lower rubber sealing body 14 is realized; finally, the air permeability detection sample of the flexible freight bag is pressed and fixed.
As shown in fig. 1 or fig. 2, the upper detection cavity 8 is fixedly arranged at the bottom position of the electric push rod 4; the lower detection cavity 9 is fixedly arranged at the upper part of the support plate 2; the pressure gauge 10 is fixedly arranged at the left side position of the upper part of the upper detection cavity 8, the air inlet pipe 11 is fixedly arranged at the right side position of the upper part of the upper detection cavity 8, and the electromagnetic valve 12 is arranged at the upper part of the air inlet pipe 11; the upper rubber sealing body 13 is fixedly arranged at the lower position of the upper detection cavity 8, the lower rubber sealing body 14 is fixedly arranged at the upper position of the lower detection cavity 9, and the upper rubber sealing body 13 and the lower rubber sealing body 14 are in ring shapes. The arrangement of the upper detection cavity 8, the lower detection cavity 9, the rubber sealing body 13 and the lower rubber sealing body 14 provides a closed space for detecting the air permeability of the detection sample 15; meanwhile, the detection sample 15 is fixedly supported tightly by utilizing the up-and-down press fit of the pressing cylinder 133 of the upper rubber sealing body 13 and the pressing round hole 143 of the lower rubber sealing body 14, and the sealing effect is also achieved. The size of the gas conveyed in the upward detection cavity 8 and the downward detection cavity 9 can be controlled through the arrangement of the air inlet pipe 11 and the electromagnetic valve 12, and the pressure gauge 10 is used for detecting the pressure of the gas in the upward detection cavity 8 and the downward detection cavity 9 in real time.
As shown in fig. 1 or 2, an exhaust pipe 16 is fixedly arranged at the bottom position of the lower detection chamber 9, and the exhaust pipe 16 extends to the lower position of the support plate 2 through the support plate 2 body; an air flow sensor 17 is fixedly provided at the lower part of the exhaust pipe 16. The above-described arrangement of the exhaust pipe 16 and the air flow sensor 17 allows the value of the amount of gas discharged from the exhaust pipe 16 to be detected in real time.
As shown in fig. 1, the control cabinet 18 is fixedly disposed at a rear bottom position of the bracket 1, the display screen 19 is fixedly disposed at a middle upper position of the control cabinet 18, the start key 20 is fixedly disposed at a right lower position of the display screen 19, the stop key 21 is fixedly disposed at a lower position of the start key 20, the control module 22 is fixedly disposed at a left lower position of the display screen 19, and the operation module 23 is fixedly disposed at a lower position of the control module 22. The start and stop keys 20 and 21 are provided to control the opening and closing of the electric push rod 4, the electromagnetic valve 12, and the air flow sensor 17. The control module 22 and the operation module 23 are arranged, so that the automatic control of the electric push rod 4, the electromagnetic valve 12 and the air flow sensor 17 can be realized, and the operation module 23 is utilized to calculate the air permeability of the detection sample 15.
As shown in fig. 3, the upper rubber sealing body 13 comprises a rubber sealing body 131, a first mounting groove 132 is formed on the upper end surface of the upper rubber sealing body 131, and a pressing cylinder 133 is uniformly arranged on the lower end surface of the rubber sealing body 131; the first mounting groove 132 is an annular groove. The upper rubber sealing body 13 can be fixedly arranged at the bottom position of the upper detection cavity 8 through the arrangement of the first mounting groove 132.
As shown in fig. 4 and 5, the lower rubber sealing body 14 includes a lower rubber sealing body 141, a second installation groove 142 is provided on a lower end face of the lower rubber sealing body 141, and a pressing round hole 143 is uniformly provided on an upper end face of the lower rubber sealing body 141. The lower rubber sealing body 14 can be fixedly mounted on the upper part of the lower detection cavity 9 through the second mounting groove 142. The working process of the air permeability detection device of the flexible freight bag is as follows: firstly, 50 cm is cut 2 The detection sample 15 is placed on the upper part of the lower rubber sealing body 14; then the start key 20 is pressed to make the control cabinet 18 in the power-on state, and the control module 22 pushes the electric motorThe rod 4 sends a control instruction for starting action, the telescopic rod of the electric push rod 4 pushes the upper detection cavity 8 and the upper rubber sealing body 13 to move downwards, when the telescopic rod of the electric push rod 4 stretches to the maximum stroke, the upper detection cavity 8 and the upper rubber sealing body 13 are in butt joint with the lower detection cavity 9 and the lower rubber sealing body 14 to be tightly pressed, meanwhile, the pressing cylinder 133 of the upper rubber sealing body 13 is matched with the pressing round hole 143 of the lower rubber sealing body 14 to be sleeved and connected with the pressing round hole 143 of the lower rubber sealing body 14 to tightly press the detection sample 15, and the detection sample 15 is in a tensioning and flattening state; simultaneously, the control module 22 sends a control instruction of opening to the electromagnetic valve 12, the blower conveys high-pressure gas into the upper detection cavity 8 and the lower detection cavity 9 through the air inlet pipe 11, the high-pressure gas is discharged from the exhaust pipe 16 through the detection sample 15, when the discharged gas passes through the air flow sensor 17, the air flow value record of the exhaust pipe 16 detected by the air flow sensor 17 is stored in the operation module 23, and meanwhile, the air flow value detected by the air flow sensor 17 is displayed in the display screen 19; the ventilation detection process is performed N times, the air flow value record is stored in the operation module 23, and the operation module 23 calculates the formula according to the ventilation rate: air permeability (R) =n times average gas flow [ ] v ) The air permeability of the detection sample 15 is calculated by the conversion coefficient (167) of the detection sample area (A), and the calculated specific air permeability value is displayed on the display screen 19; finally, the worker fills out the air permeability report of the detection sample 15 to complete the air permeability detection process.
In the first embodiment, as shown in fig. 3 to 5, 4 pressing cylinders 133 are uniformly provided on the lower end surface of the rubber sealing body 131; 4 compacting round holes 143 are uniformly formed in the upper end surface of the rubber sealing body 141; the diameter of the pressing cylinder 133 is smaller than that of the pressing round hole 143, and the pressing cylinder 133 and the pressing round hole 143 are in up-down butt joint fit and pressing.
In the second embodiment, as shown in fig. 3 to 5, 8 pressing cylinders 133 are uniformly arranged on the lower end surface of the rubber sealing body 131; the upper end surface of the rubber sealing body 141 is uniformly provided with 8 pressing round holes 143; the diameter of the pressing cylinder 133 is smaller than that of the pressing round hole 143, and the pressing cylinder 133 and the pressing round hole 143 are in up-down butt joint fit and pressing.
In the third embodiment, on the basis of the present utility model, as shown in fig. 3 to 5, 12 pressing cylinders 133 are uniformly provided on the lower end surface of the rubber sealing body 131; the upper end surface of the rubber sealing body 141 is uniformly provided with 12 compaction round holes 143; the diameter of the pressing cylinder 133 is smaller than that of the pressing round hole 143, and the pressing cylinder 133 and the pressing round hole 143 are in up-down butt joint fit and pressing.
Various modifications to the embodiments described above will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a flexible freight bag's gas permeability detection device, includes support, backup pad, mount pad and electric putter; the bracket is U-shaped, and a supporting plate is fixedly arranged in the middle of the bracket; the bottom of mount pad is fixed to be provided with electric putter, the mount pad is fixed to be set up the upper portion of support, its characterized in that: the electric push rod passes through the upper part of the bracket and extends to the lower part of the bracket; the guide rods are symmetrically arranged at the two sides of the support plate, and the upper ends of the guide rods are fixedly connected with the bottom of the support; the guide cylinders are sleeved on the guide rods, and fixing blocks are fixedly arranged on the inner sides of the guide cylinders; the upper detection cavity is cylindrical, the upper part of the upper detection cavity is sealed, and the lower part of the upper detection cavity is opened, and the upper detection cavity is fixedly arranged at the bottom position of the electric push rod; the lower detection cavity is fixedly arranged at the upper part of the supporting plate; the pressure gauge is fixedly arranged at the left side position of the upper part of the upper detection cavity, the air inlet pipe is fixedly arranged at the right side position of the upper part of the upper detection cavity, and the electromagnetic valve is arranged at the upper part of the air inlet pipe; the upper rubber sealing body is fixedly arranged at the lower part of the upper detection cavity, the lower rubber sealing body is fixedly arranged at the upper part of the lower detection cavity, and the upper rubber sealing body and the lower rubber sealing body are annular; the detection sample is placed at the upper part of the lower rubber sealing body; the exhaust pipe is fixedly arranged at the bottom position of the lower detection cavity, and penetrates through the support plate body to extend to the lower position of the support plate; an air flow sensor is fixedly arranged at the lower part of the exhaust pipe; the control cabinet is fixedly arranged at the rear bottom position of the support, the display screen is fixedly arranged at the middle upper position of the control cabinet, the start key is fixedly arranged at the right lower position of the display screen, the stop key is fixedly arranged at the lower position of the start key, the control module is fixedly arranged at the left lower position of the display screen, and the operation module is fixedly arranged at the lower position of the control module.
2. The air permeability detection device for a flexible freight bag according to claim 1, wherein: the telescopic rod of the electric push rod is fixedly connected with the center of the upper part of the upper detection cavity.
3. The air permeability detection device for a flexible freight bag according to claim 1, wherein: the inner side end surface of the fixed block is fixedly connected with the outer surface of the upper detection cavity, and the fixed block fixedly connects the upper detection cavity with the guide rod and the guide cylinder into a whole.
4. The air permeability detection device for a flexible freight bag according to claim 1, wherein: the lower detection cavity is cylindrical, the upper part of the lower detection cavity is open, the lower part of the lower detection cavity is closed, the upper detection cavity and the lower detection cavity are correspondingly arranged up and down, and the sizes of the upper detection cavity and the lower detection cavity are equal.
5. The air permeability detection device for a flexible freight bag according to claim 1, wherein: the pressure gauge is fixedly connected with the control module and the display screen through signal transmission lines.
6. The air permeability detection device for a flexible freight bag according to claim 1, wherein: the air inlet pipe is fixedly connected with the outlet end of the air blower through an air pipe and an electromagnetic valve, and the electromagnetic valve is fixedly connected with the control module through a signal transmission line; the electromagnetic valve is used for controlling the outlet air quantity of the blower.
7. The air permeability detection device for a flexible freight bag according to claim 1, wherein: the upper rubber sealing body comprises a rubber sealing body, the first mounting groove is formed in the upper end face of the upper rubber sealing body, and the lower end face of the rubber sealing body is uniformly provided with a compression cylinder; the first mounting groove is an annular groove.
8. The air permeability detection device for a flexible freight bag according to claim 1, wherein: the lower rubber sealing body comprises a lower rubber sealing body, the second installation groove is formed in the lower end face of the lower rubber sealing body, and the compaction round holes are uniformly formed in the upper end face of the lower rubber sealing body.
9. The air permeability detection device for a flexible freight bag according to claim 7, wherein: the diameter of the pressing cylinder is smaller than that of the pressing round hole, and the pressing cylinder and the pressing round hole are in up-down butt joint fit and pressing.
10. The air permeability detection device for a flexible freight bag according to claim 1, wherein: the air flow sensor is fixedly connected with the control module and the operation module through signal transmission lines.
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| CN202322111007.8U CN220708997U (en) | 2023-08-08 | 2023-08-08 | Air permeability detection device of flexible freight bag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322111007.8U CN220708997U (en) | 2023-08-08 | 2023-08-08 | Air permeability detection device of flexible freight bag |
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