Volatile organic compound air bag
By designing a volatile organic compound (VOC) gas bag with a removable sealing strip, the problems of low reusability, high price, and difficult cleaning have been solved, achieving efficient cleaning and multiple uses, reducing costs and enhancing sealing performance.
Patent Information
- Application Number
- CN202423320178.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing volatile organic compound (VOC) gas bags have low reusability, are expensive, difficult to clean, and have a high breakage rate, resulting in high costs and affecting detection results.
A volatile organic compound (VOC) gas bag with a removable sealing strip is designed. The removable sealing strip enables quick and effective cleaning, improves sealing performance and the number of reusable applications, and enhances the sealing effect by employing a guide sealing shaft and a sealing pressure plate structure.
It improves the cleaning efficiency and recycling frequency of air bags, reduces costs, enhances sealing, prevents damage to air bags, and ensures sampling results.
Smart Images
Figure CN223591406U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the gas sampling technical field, concretely relates to a volatile organic gas bag. BACKGROUND
[0002] The current gas bag for collecting non-methane organic matters mainly comprises a gas bag body, a sampling valve for facilitating air extraction and air release is arranged on the gas bag body, the gas bag body is mainly made of Teflon material, the edge of the gas bag body is in the form of a bag-shaped structure with a closed inner cavity formed by heat sealing, and the current gas bag has the problems of low recycling rate, high price, complex cleaning, high damage rate and the like, which mainly include the following aspects:
[0003] 1. Low recycling rate: the collected high-boiling-point components are difficult to clean completely, the blank value is high, and the gas bag can only be scrapped after being used for 3-4 times on average;
[0004] 2. High price: the price of one gas bag is more than 50 yuan, the sampling amount per day is 60 on average, and the cost is high;
[0005] 3. Difficult to clean: the current cleaning of the gas bag uses a nitrogen heating method to repeatedly ventilate the gas bag, and the cleaning instrument has a high cost of about 200,000 yuan and high nitrogen consumption cost;
[0006] 4. High damage rate: the gas bag is prone to breakage at the heat-sealed joint when the gas bag is inflated to be full during the collection of samples or the cleaning of the gas bag, which leads to the scrapping of the gas bag, and once the gas bag leaks, the sampled gas cannot be analyzed subsequently, which affects the work of gas detection. INVENTION CONTENTS
[0007] The utility model solves the technical problem that a volatile organic gas bag can be quickly and effectively cleaned by detaching the sealing strip, the cleaning efficiency is improved, the number of recycling is increased, and the cost is reduced.
[0008] To solve the above technical problems, the technical scheme of the utility model is as follows: a volatile organic gas bag comprises a gas bag body, the gas bag body is annular, the openings on the two sides of the gas bag body are in communication with each other, a sampling valve for air inlet and outlet is arranged on the gas bag, a sealing strip is detachably arranged on the opening on each side of the gas bag body, the sealing strip comprises a cylinder portion, a handle is arranged on the cylinder portion, one end of the cylinder portion is blocked, the other end is open, a guide sealing shaft extends from the blocked end to the open end in the cylinder portion, a gap is arranged between the guide sealing shaft and the cylinder portion, a winding portion is arranged on the opening on each side of the gas bag body and wound in the gap, and a sealing pressing plate is arranged below the cylinder portion and cooperates with the sealing pressing plate.
[0009] As a preferred scheme, the sealing plate is provided with corresponding strip-shaped protrusions, and the free ends of the strip-shaped protrusions are arc-shaped.
[0010] As a preferred scheme, the length of the guide sealing shaft is longer than the depth of the cylinder, the free end of the guide sealing shaft is conical, and the top of the free end of the guide sealing shaft is spherical.
[0011] As a preferred scheme, the cross section of the guide sealing shaft is elliptical.
[0012] As a preferred scheme, the handle is an arc-shaped plate, the arc-shaped plate is fixedly installed above the cylinder, and a strip-shaped through hole for manual holding is formed in the arc-shaped plate.
[0013] As a preferred scheme, the surface of the winding part is provided with a rough surface.
[0014] After the above technical scheme is adopted, the effect of the utility model is that: since the volatile organic compound gas bag comprises a gas bag body, the gas bag body is annular, the openings on the two sides of the gas bag body are in communication with each other, a sampling valve for gas inlet and outlet is arranged on the gas bag, a sealing strip is detachably arranged on the two sides of the opening of the gas bag body, the sealing strip comprises a cylinder, a handle is arranged on the cylinder, one end of the cylinder is blocked, the other end is open, a guide sealing shaft extends in the cylinder from the blocked end to the open end, a gap is arranged between the guide sealing shaft and the cylinder, a winding part is arranged on the opening on the two sides of the gas bag body and winds in the gap, and a sealing plate that cooperates with each other is further arranged below the cylinder, and a sealing groove for pressing the gas bag body is formed between the sealing plates; first, the winding part of the opening of the gas bag body is folded, then the sealing strip is manually held, the guide sealing shaft on the cylinder is inserted into the folding gap after the winding part is folded, until the gas bag body collides with the blocked end of the cylinder, the winding part can wrap the guide sealing shaft, at the same time, the opening of the gas bag body and a part of the gas bag body are between the sealing plates, the contact area of the opening of the gas bag body and the sealing plate is increased, the sealing effect is effectively improved, the opening on the other side of the gas bag body is the same, and thus the collection of volatile organic compounds can be completed through sampling by the sampling valve, when the gas bag needs to be cleaned, the sealing strip is manually pulled out, the opening of the gas bag body leaks, and the gas bag can be cleaned, the cleaning efficiency is high, the gas bag can be quickly and effectively cleaned by detaching the sealing strip, the cleaning efficiency is improved, the number of cyclic use is increased, and the cost is reduced.
[0015] Since the sealing plate is provided with corresponding strip-shaped protrusions, and the free ends of the strip-shaped protrusions are arc-shaped, the opening of the gas bag body and the gas bag body can be effectively bent, the sealing property is improved, the sampling effect of the gas bag is improved, and the strip-shaped protrusions in the arc shape can protect the gas bag body and avoid damaging the surface of the gas bag body.
[0016] Further, the free end of the guide sealing shaft is conical, and the top of the free end of the guide sealing shaft is spherical; the guide sealing shaft extends out of the cylinder body to facilitate alignment of the guide sealing shaft and the winding part, and the conical free end and the spherical top facilitate accurate and reliable insertion of the top into the folding gap of the winding part, and protect the air bag body.
[0017] Further, the cross section of the guide sealing shaft is elliptical; the elliptical shape ensures accurate and stable winding of the winding part on the guide sealing shaft, and avoids over-expansion of the folding gap after insertion of the guide sealing shaft into the folding gap.
[0018] Further, the handle is an arc-shaped plate fixedly installed above the cylinder part, and a strip-shaped through hole for manual holding is formed in the arc-shaped plate; the strip-shaped through hole facilitates manual holding by fingers, thereby improving the use effect.
[0019] Further, the surface of the winding part is provided with a rough surface, so that the winding part can increase the friction between the guide sealing shaft, thereby further improving the sealing effect. BRIEF DESCRIPTION OF DRAWINGS
[0020] The utility model will be further described below in combination with the drawings and embodiments.
[0021] Figure 1 is a perspective view of the utility model embodiment;
[0022] Figure 2 is a sectional view of the sealing strip of the utility model embodiment;
[0023] Figure 3 is Figure 1 A local enlarged view of the place;
[0024] In the drawings: 1, air bag body; 2, sampling valve; 3, sealing strip; 4, cylinder part; 5, handle; 6, guide sealing shaft; 7, winding part; 8, sealing press plate; 9, sealing groove; 10, strip-shaped protrusion; 11, strip-shaped through hole. DETAILED DESCRIPTION
[0025] The utility model will be further described below in combination with the drawings and embodiments.
[0026] As Figures 1 to 3As shown, a volatile organic compound (VOC) gas bag includes a gas bag body 1, which is annular with openings on both sides that are interconnected. The gas bag is equipped with sampling valves 2 for inlet and outlet gas. Sealing strips 3 are detachably attached to both sides of the openings of the gas bag body 1. Each sealing strip 3 includes a cylindrical portion 4 with a handle 5 mounted on it. One end of the cylindrical portion 4 is sealed, and the other end is open. A guide sealing shaft 6 extends from the sealed end to the open end within the cylindrical portion 4, with a gap between the guide sealing shaft 6 and the cylindrical portion 4. A winding portion 7, wound within the gap, is provided on the openings on both sides of the gas bag body 1. A cooperating sealing pressure plate 8 is also installed below the cylindrical portion 4, forming a sealing groove 9 between the sealing pressure plates 8 to press the gas bag body 1. The surface of the winding portion 7 is roughened.
[0027] In this embodiment, after sealing and connecting corresponding two sides of the air bag body 1, the other two sides are open, so that the air bag body 1 can form a ring structure, which facilitates cleaning of the inside of the air bag body 1 and reduces the difficulty of cleaning. Then, simply fold the opening of the air bag body 1 to form a folding gap, align the guide sealing shaft 6 with the folding gap and insert it, so that the winding part 7 on the air bag body 1 wraps the guide sealing shaft 6. Then, the air bag body 1 and the opening of the air bag body 1 will be pressed by the sealing pressure plate 8, thereby further ensuring the sealing effect. The sampling valve 2 on the air bag is an existing structure on the market, so it will not be described in detail in the text.
[0028] like Figure 3 As shown, the sealing plate 8 is provided with corresponding strip-shaped protrusions 10, and the free end of the strip-shaped protrusions 10 is arc-shaped; there are two strip-shaped protrusions 10 on one side of the sealing plate 8, and one strip-shaped protrusion 10 on the other side of the sealing plate 8. There is a strip-shaped groove between the two strip-shaped protrusions 10 to accommodate one strip-shaped protrusion 10. This allows the gas bag body 1 and the opening of the gas bag body 1 located between the sealing plates 8 to undergo multiple bends, further improving the sealing effect and ensuring the accuracy of the sampled gas. At the same time, the arc-shaped strip-shaped protrusions 10 can protect the gas bag body 1 and avoid damaging the surface of the gas bag body 1.
[0029] Furthermore, the length of the guide sealing shaft 6 is longer than the depth of the cylinder, the free end of the guide sealing shaft 6 is conical, and the top of the free end of the guide sealing shaft 6 is spherical. The guide sealing shaft 6 extending out of the cylinder can easily align the guide sealing shaft 6 with the winding part 7. At the same time, the free end of the guide sealing shaft 6 is conical and the top is spherical, which makes it easy to accurately and reliably insert the top into the folding gap of the winding part 7, and also protects the air bag body 1.
[0030] In the embodiment, the cross section of the guide sealing shaft 6 is oval, which can ensure that the winding part 7 is accurately and stably wound on the guide sealing shaft 6, and avoid that the guide sealing shaft 6 opens the folding gap too much after being inserted into the folding gap.
[0031] Further, the handle 5 is an arc-shaped plate fixedly installed above the barrel part 4, and a strip-shaped through hole 11 for manually holding is formed in the arc-shaped plate. The strip-shaped through hole 11 is convenient for fingers to pass through for holding, and also convenient for carrying the air bag after sampling is completed, and improves the use effect.
[0032] The working principle of the embodiment is as follows: first, fold the air bag body 1 at the opening, then manually hold one sealing strip 3, insert the guide sealing shaft 6 into the folding gap, and at the same time, part of the air bag body 1 and the air bag body 1 at the opening are clamped into the sealing groove 9, until the air bag body 1 reaches the blocking end of the barrel part 4, the clamping is completed, the opening on the other side is the same as the above operation, then sampling is performed through the sampling valve 2, when cleaning is needed, pull out the sealing strip 3, so that the opening of the air bag body 1 is exposed, and then the cleaning can be performed.
[0033] The above embodiment is only a description of the preferred embodiment of the present application, and is not used as a limitation on the scope of the present application. Various modifications and improvements of the technical scheme of the present application without departing from the design spirit of the present application should fall within the protection scope of the claims of the present application.
Claims
1. A volatile organic compound (VOC) gas bag, comprising a gas bag body, the gas bag body being annular, with openings on both sides of the gas bag body communicating with each other, and the gas bag being provided with sampling valves for inlet and outlet gas, characterized in that: The opening of the air bag body is detachably provided with a sealing strip, the sealing strip comprises a cylinder portion, a handle is installed on the cylinder portion, one end of the cylinder portion is blocked, the other end is an opening, a guide sealing shaft extends in the cylinder portion from the blocked end to the opening end, a gap is arranged between the guide sealing shaft and the cylinder portion, a winding portion is arranged on the opening of the air bag body and wound in the gap, and a sealing pressing plate which cooperates with each other is further installed below the cylinder portion, and a sealing groove which presses the air bag body is formed between the sealing pressing plates.
2. A volatile organic material gas bag as claimed in claim 1, characterized in that: Corresponding strip-shaped protrusions are arranged on the sealing pressing plates, and the free ends of the strip-shaped protrusions are arc-shaped.
3. A volatile organic material gas bag as defined in claim 1, wherein: The length of the guide sealing shaft is longer than the depth of the cylinder, the free end of the guide sealing shaft is conical, and the top of the free end of the guide sealing shaft is spherical.
4. A volatile organic material gas bag as claimed in claim 3, characterised in that: The cross section of the guide sealing shaft is elliptical.
5. A volatile organic material gas pocket as defined in claim 1, wherein: The handle is an arc-shaped plate, the arc-shaped plate is fixedly installed above the cylinder portion, and a strip-shaped through hole for manually holding is arranged on the arc-shaped plate.
6. A volatile organic material air pouch as claimed in claim 1 characterised by: A rough surface is arranged on the surface of the winding portion.