VOC sealing device

Abstract

The utility model discloses a VOC (volatile organic compound) sealing device which comprises a waste water pool, a sealing end cover is fixedly connected to the upper end of the waste water pool, a sampling opening is formed in one end corner of the upper end of the sealing end cover in a penetrating manner, an edge ring opening is fixedly connected to the periphery of the upper end of the sampling opening, and a sealing cover is sleeved on the periphery of the edge ring opening. A long bolt is extruded at the upper end of the sealing cover, the upper end of the long bolt is connected with a supporting frame, the supporting frame is of an inverted-U-shaped frame structure, and the front end and the rear end of the supporting frame are fixedly connected with the upper end of the sealing end cover. The threaded hole is formed in the middle of the upper end of the supporting frame in a penetrating mode, the long bolt rotates downwards in the threaded hole, the whole long bolt extrudes the sealing cover at the lower end, the sealing cover is arranged on the edge ring opening on the periphery of the upper end of the sampling opening in a sleeved mode, and the sampling opening is sealed through the whole sealing cover and the sampling opening. Therefore, VOC gas in the sealing end cover is prevented from overflowing.

Description

Technical Field

[0001] This utility model relates to the field of VOC sealing technology, specifically a VOC sealing device. Background Technology

[0002] VOCs are volatile organic compounds. At room temperature, compounds with a boiling point between 50℃ and 250℃ are considered volatile organic compounds. VOCs have a significant impact on human health. When the concentration of VOCs in a room reaches a certain level, people may experience headaches, nausea, vomiting, and fatigue within a short period. Therefore, it is necessary to seal the entire wastewater tank with a sealed end cap. Even after sealing, the VOCs inside the wastewater tank still need to be collected using a sampling device, and the components in the collected VOCs can be analyzed using detection pins.

[0003] VOC sampling requires opening the entire sealed end cap. Typical sealed end caps have a large area and are fixed with bolts. This opening method not only makes it difficult to open the sealed end cap, but also makes it easy for all the gas inside the wastewater tank to overflow when the sealed end cap is opened, causing the VOCs inside the wastewater tank to diffuse into the air irreversibly. Therefore, in order to solve the above problems, we propose a VOC sealing device. Utility Model Content

[0004] The purpose of this utility model is to provide a VOC sealing device to solve the problems mentioned in the background art, such as the large area of ​​the general sealing end cap and the sealing end cap being fixed by bolts. This opening method not only makes it difficult to open the sealing end cap, but also makes it easy for all the gas inside the wastewater tank to overflow when the sealing end cap is opened, which leads to the irreversible diffusion of VOCs inside the wastewater tank into the air.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a VOC sealing device, comprising a wastewater tank, a sealing end cap fixedly connected to the upper end of the wastewater tank, a sampling port penetrating at one corner of the upper end of the sealing end cap, an edge ring fixedly connected around the upper end of the sampling port, a sealing cover fitted around the edge ring, a long bolt pressed onto the upper end of the sealing cover, a support frame connected to the upper end of the long bolt, the support frame being an inverted U-shaped frame structure, the front and rear ends of the support frame being fixedly connected to the upper end of the sealing end cap, and the distance between the front and rear ends of the support frame being greater than the diameter of the sealing cover.

[0006] Preferably, a threaded hole is provided through the middle of the upper end of the support frame, and the long bolt is rotatably connected to the threaded hole.

[0007] Preferably, grooves are provided on both sides of the edge ring opening, and elastic clips are connected to both sides inside the sealing cover, with the elastic clips engaging in the grooves.

[0008] Preferably, the cross-section of the elastic card is set to a semi-ellipse.

[0009] Preferably, a sealing ring is pressed between the bottom end of the inside of the sealing cap and the upper end of the edge ring.

[0010] Preferably, the sealing end cap is fixedly connected to the upper end of the wastewater tank by bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model provides a threaded hole through the middle of the upper end of the support frame, and a long bolt rotates downward in the threaded hole, causing the long bolt to press against the sealing cap at the lower end. The sealing cap is fitted onto the edge ring around the upper end of the sampling port, so that the lower end of the sealing cap presses against the sealing ring at the upper end of the edge ring. This arrangement seals the sealing cap and the sealing ring at the upper end of the edge ring, thus sealing the sampling port and preventing VOC gas from escaping from the inside of the sealing cap.

[0013] 2. In this utility model, as the sealing cap moves downwards around the edge ring, the elastic clip inside the sealing cap is first deformed by the pressure of the edge ring. Then, the elasticity of the elastic clip itself causes it to engage in the groove, thereby making the entire sealing cap engage and fix it around the edge ring and its upper end. This method eliminates the need for the support frame and long bolts, so that the upper end of the sealing cap is no longer obstructed, making it easier to remove the sealing cap from the upper end of the edge ring. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0015] Figure 2 This is an enlarged view of the three-dimensional structure at point A in the figure of this utility model;

[0016] Figure 3 This utility model Figure 2 A frontal sectional view of the three-dimensional structure;

[0017] Figure 4 This utility model Figure 3 Enlarged view of the structure at point B in the middle.

[0018] In the diagram: 1. Wastewater tank; 2. Sealed end cap; 3. Support frame; 4. Sealing cap; 5. Threaded hole; 6. Long bolt; 7. Groove; 8. Elastic clip; 9. Sealing ring; 10. Sampling port; 11. Edge ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 4 The present invention provides an embodiment of a VOC sealing device, comprising a wastewater tank 1, a sealing end cap 2 fixedly connected to the upper end of the wastewater tank 1, the sealing end cap 2 being fixedly connected to the upper end of the wastewater tank 1 by bolts, so that the sealing end cap 2 covers the upper end of the wastewater tank 1, a sampling port 10 is provided through one corner of the upper end of the sealing end cap 2, an edge ring 11 is fixedly connected around the upper end of the sampling port 10, a sealing cover 4 is fitted around the edge ring 11, a long bolt 6 is pressed into the upper end of the sealing cover 4, a support frame 3 is connected to the upper end of the long bolt 6, and a sealing ring 9 is pressed between the bottom end of the inside of the sealing cover 4 and the upper end of the edge ring 11.

[0021] The support frame 3 is designed as an inverted U-shaped frame structure. The front and rear ends of the support frame 3 are fixedly connected to the upper end of the sealing end cap 2. The distance between the front and rear ends of the support frame 3 is greater than the diameter of the sealing cap 4. A threaded hole 5 is provided through the middle of the upper end of the support frame 3. A long bolt 6 is rotatably connected in the threaded hole 5. This arrangement makes the entire support frame 3 located on the upper side of the sealing cap 4, so that the long bolt 6 can press against the upper end of the sealing cap 4.

[0022] By providing a threaded hole 5 through the middle of the upper end of the support frame 3, and rotating the long bolt 6 downwards in the threaded hole 5, the long bolt 6 presses against the sealing cap 4 at the lower end. The sealing cap 4 is fitted onto the edge ring 11 around the upper end of the sampling port 10, so that the lower end inside the sealing cap 4 presses against the sealing ring 9 at the upper end of the edge ring 11. This arrangement seals the sealing cap 4 at the upper end of the edge ring 11, and also fixes the sealing ring 9 at the upper end of the edge ring 11. The arrangement of the sealing cap 4 and the sampling port 10 seals the sampling port 10, thereby preventing VOC gas from escaping from the inside of the sealing end cap 2.

[0023] If the overall sealing cover 4 is opened, the long bolt 6 is rotated upwards, allowing it to move upwards in the threaded hole 5. This removes the pressure from the overall sealing cover 4, allowing it to be removed from the upper end of the edge ring 11. The edge ring 11 then opens, ending the sealing of VOC gas inside the wastewater tank 1. The user can then insert the sampling pipe into the wastewater tank 1 and turn on the air pump to extract the VOC gas from the pipe into the sampling container for storage, thus completing the sampling step of VOC gas inside the wastewater tank 1.

[0024] See Figure 4 Another embodiment of this utility model is provided: grooves 7 are provided on both sides of the edge ring 11, and elastic clips 8 are connected to both sides inside the sealing cover 4. The elastic clips 8 are engaged in the grooves 7. The cross-section of the elastic clips 8 is set as a semi-ellipse. When the sealing cover 4 moves downward around the edge ring 11, the elastic clips 8 inside the sealing cover 4 are first deformed by the pressure of the edge ring 11. Then, the elasticity of the elastic clips 8 makes them engage in the grooves 7, thereby making the entire sealing cover 4 engaged and fixed around the edge ring 11 and its upper end. This method eliminates the need for the support frame 3 and the long bolt 6, so that the upper end of the sealing cover 4 is no longer obstructed, and it is more convenient to remove the sealing cover 4 from the upper end of the edge ring 11.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A VOC sealing device, comprising a wastewater tank (1), characterized in that: A sealing end cap (2) is fixedly connected to the upper end of the wastewater tank (1). A sampling port (10) is provided through one corner of the upper end of the sealing end cap (2). An edge ring (11) is fixedly connected around the upper end of the sampling port (10). A sealing cover (4) is fitted around the edge ring (11). A long bolt (6) is pressed onto the upper end of the sealing cover (4). A support frame (3) is connected to the upper end of the long bolt (6). The support frame (3) is designed as an inverted U-shaped frame structure. The front and rear ends of the support frame (3) are fixedly connected to the upper end of the sealing end cap (2). The distance between the front and rear ends of the support frame (3) is greater than the diameter of the sealing cover (4).

2. The VOC sealing device according to claim 1, characterized in that: The upper end of the support frame (3) has a threaded hole (5) through it, and the long bolt (6) is rotatably connected to the threaded hole (5).

3. A VOC sealing device according to claim 2, characterized in that: The edge ring (11) has grooves (7) on both sides, and the sealing cover (4) has elastic clips (8) on both sides inside, which are engaged in the grooves (7).

4. A VOC sealing device according to claim 3, characterized in that: The cross-section of the elastic card (8) is set to a semi-ellipse.

5. A VOC sealing device according to claim 1, characterized in that: A sealing ring (9) is pressed between the bottom end of the inside of the sealing cap (4) and the upper end of the edge ring (11).

6. A VOC sealing device according to claim 1, characterized in that: The sealing end cap (2) is fixedly connected to the upper end of the wastewater tank (1) by bolts.

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