VOC waste gas treatment air pressure difference balance communication assembly based on pressure feedback

Abstract

The utility model provides a VOC waste gas treatment air pressure difference balance communicating assembly based on pressure feedback, and belongs to the technical field of VOC waste gas treatment, the VOC waste gas treatment air pressure difference balance communicating assembly comprises a vent valve body, one end of the vent valve body is provided with an air inlet, the top of the air inlet is movably clamped with a spring push block, the spring push block is matched with an air balance piece, and the air balance piece is connected with the vent valve body. A toothed plate is arranged on the inner side face of the vent valve body, the gas balance part comprises a middle plate installed at one end of a spring push block, a positioning ring is fixedly connected to the upper surface of the middle plate, and through cooperation of the spring push block and the gas balance part, waste gas in the vent valve body area cannot expand, and the gas pressure is always within the safe level; and through fixed connection of a valve rod and a positioning ring and installation of a middle-arranged plate, waste gas can drive a spring push block to stretch by pushing the middle-arranged plate, blocking of the gas inlet is further relieved, and the waste gas can be fed in in an increased amount.

Description

Technical Field

[0001] This utility model belongs to the field of VOC exhaust gas treatment technology, specifically relating to a VOC exhaust gas treatment pressure differential balance connection component based on pressure feedback. Background Technology

[0002] VOC (Volatile Organic Compounds) waste gas treatment is an important issue in the field of industrial environmental protection, involving multiple industries such as chemical, coating, printing, pharmaceutical, and electronics. VOCs pose significant hazards to the environment and human health, and the treatment technology must be selected according to the characteristics of the waste gas (concentration, composition, air volume, etc.).

[0003] In the prior art, such as the gas connector with application number 202021570870.X, there is a first valve body and a second valve body. The top of the first valve body has a vent hole for connecting to equipment, and a first valve stem is slidably disposed within the first valve body along the axial direction. The second valve body is located below the first valve body and is hermetically fitted onto the first valve body. The second valve body has a gas outlet hole for connecting to an external pipeline; a second valve stem is slidably disposed within the second valve body along the axial direction.

[0004] In the above, the flexible opening and closing of exhaust gas is basically achieved through the cooperation of multiple valve bodies and valve stems, which to a certain extent reflects the exhaust gas treatment function. However, after reading the technical solution, it is found that the valve stem is pushed by multiple elastic elements to block the air port. Since it is difficult to keep the air volume stable when the exhaust gas is introduced, and the elastic elements are affected by the air volume, their tensile length and tensile modulus often change. As a result, the blocking force on the air port is sometimes large and sometimes small, which may cause the exhaust gas volume in the valve body cavity to expand excessively, or even cause the valve body to break and be damaged. Therefore, it is necessary to balance and adjust the exhaust gas volume in the valve body cavity. Utility Model Content

[0005] The purpose of this invention is to provide a VOC exhaust gas treatment pressure differential balance connection component based on pressure feedback, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a vent valve body, one end of which has an air inlet. A spring push block is movably engaged at the top of the air inlet. The spring push block is fitted with a gas balancing component. A toothed plate is provided on the inner side of the vent valve body. The gas balancing component includes a central plate installed at one end of the spring push block. A positioning ring is fixedly connected to the upper surface of the central plate. A valve stem is inserted into the inner cavity of the positioning ring. A straight block is provided on the inner side of the central plate. An inclined plate is slidably fitted on the surface of the straight block.

[0007] In a preferred embodiment of this utility model, a square frame is fixedly connected to one side of the inclined plate, and a concave top plate is snapped into the end face of the square frame. The side of the concave top plate is fitted and connected to the vent valve body.

[0008] As a preferred embodiment of this utility model, an irregularly shaped card block is provided on the inner side of the square frame, and the irregularly shaped card block is engaged with the toothed plate through an arc-shaped hole.

[0009] In a preferred embodiment of this utility model, the number of gas balancing components and toothed plates is two sets, and the two sets of gas balancing components and toothed plates are arranged symmetrically.

[0010] As a preferred embodiment of this utility model, an air-sealing bottom ring is installed on the end face of the valve stem, and a flow-limiting protrusion is placed on the side of the valve stem. The side cross-sectional shape of the flow-limiting protrusion is an equidistant stepped shape.

[0011] As a preferred embodiment of this utility model, the upper surface of the air-tight bottom ring is fitted with a septum, which is made of rubber in one piece and arranged in a conical shape.

[0012] As a preferred embodiment of this utility model, the maximum elastic modulus of the diaphragm does not exceed the diameter of the vent valve body, and the conical center of the diaphragm is aligned with the vent valve body.

[0013] As a preferred embodiment of this utility model, one end of the vent valve body is provided with a vent, and the center of the vent coincides with the center of the top of the diaphragm.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By opening an air inlet in the vent valve body, VOC exhaust gas can be smoothly vented, facilitating the balanced control of VOC exhaust gas volume; the cooperation between the spring pusher and the gas balancing component ensures that the exhaust gas in the vent valve body area does not expand, and the gas pressure remains within a safe level, reducing the risk of compression damage to the vent valve body; the fixed connection between the valve stem and the positioning ring allows different vent valve bodies to be connected and assembled, creating a communication area for the exhaust gas; and the installation of the central plate allows the exhaust gas to push the central plate, thereby stretching the spring pusher. This further unblocks the air inlet, allowing for increased exhaust gas flow. This facilitates the balancing and adjustment of the exhaust gas volume. The sliding cooperation between the inclined plate and the straight block allows the square frame to slide and retract along the interior of the straight block, expanding the exhaust gas space and facilitating the flow of a constant volume of exhaust gas. The snap-fit ​​between the concave top plate and the square frame ensures that the square frame is initially secured to the concave top plate. As exhaust gas continues to flow in, the resulting thrust causes the square frame to shift vertically, increasing the venting valve's capacity to match the exhaust gas volume and preventing damage from gas compression. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the parts related to achieving the dynamic balance effect of exhaust gas in this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of section A;

[0019] Figure 4 This is a schematic diagram of the structure of the parts that achieve the linear propulsion effect in this utility model.

[0020] In the diagram: 1. Vent valve body; 2. Air inlet; 3. Spring push block; 4. Gas balance component; 41. Central plate; 42. Positioning ring; 43. Inclined plate; 44. Straight block; 45. Square frame; 46. Irregularly shaped locking block; 47. Concave top plate; 5. Toothed plate; 6. Valve stem; 7. Air-isolating bottom ring; 8. Septum; 9. Flow-limiting protrusion; 10. Vent. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] This utility model embodiment proposes a VOC exhaust gas treatment pressure differential balance connection component based on pressure feedback, including a vent valve body 1; for example, such as Figures 1-3 As shown.

[0023] One end of the vent valve body 1 is provided with an air inlet 2. A spring push block 3 is movably engaged at the top of the air inlet 2. The spring push block 3 is fitted with a gas balancing component 4. A toothed plate 5 is provided on the inner side of the vent valve body 1. The gas balancing component 4 includes a central plate 41 installed at one end of the spring push block 3. A positioning ring 42 is fixedly connected to the upper surface of the central plate 41. A valve stem 6 is inserted into the inner cavity of the positioning ring 42. A straight block 44 is provided on the inner side of the central plate 41. An inclined plate 43 is slidably fitted on the surface of the straight block 44.

[0024] A square frame 45 is fixedly connected to one side of the inclined plate 43. A concave top plate 47 is snapped into the end face of the square frame 45. The side of the concave top plate 47 is fitted and connected to the vent valve body 1.

[0025] The inner side of the square frame 45 is provided with an irregularly shaped card block 46, which engages with the toothed plate 5 through an arc-shaped hole.

[0026] Specifically, by opening an air inlet 2 in the vent valve body 1, VOC exhaust gas can be smoothly vented, facilitating the balanced control of VOC exhaust gas volume. Furthermore, the cooperation between the spring pusher 3 and the gas balancing component 4 prevents the exhaust gas within the vent valve body 1 area from expanding, ensuring the gas pressure remains within a safe level and reducing pressure damage to the vent valve body 1. The fixed connection between the valve stem 6 and the positioning ring 42 allows different vent valve bodies 1 to be connected and assembled, creating a communication area for the exhaust gas. Finally, the installation of the central plate 41 allows the exhaust gas to push the central plate 41, causing the spring pusher 3 to stretch, further releasing the air inlet 2. By blocking the flow of exhaust gas, the amount of exhaust gas can be increased, which facilitates the balance adjustment of the exhaust gas volume. The sliding cooperation between the inclined plate 43 and the straight block 44 allows the square frame 45 to slide and retract along the inside of the straight block 44 under the influence of the exhaust gas, thus expanding the exhaust gas space and facilitating the connection of a constant volume of exhaust gas. The snap-fit ​​cooperation between the concave top plate 47 and the square frame 45 allows the square frame 45 to be snap-fitted and fixed to the concave top plate 47 first. As the exhaust gas is continuously introduced, the resulting thrust will cause the square frame 45 to move vertically, increasing the accommodating space of the vent valve body 1 to match the exhaust gas volume and preventing damage to the vent valve body 1 due to gas compression.

[0027] The engagement of the irregularly shaped card block 46 with the toothed plate 5 allows the thrust generated by the gas to be manifested through meshing (i.e., the pushing distance of the gas, which is represented by the number of teeth meshing on the toothed plate 5). At the same time, the meshing motion can prevent the gas from being excessively expanded and pushed, further reducing the difference in gas volume between the input and output ends of the exhaust gas, thus demonstrating the characteristics of dynamic balance.

[0028] The number of gas balancing components 4 and toothed plates 5 is two sets; for example, such as... Figures 2-4 As shown.

[0029] The two sets of gas balancing components 4 and toothed plates 5 are arranged symmetrically.

[0030] An air-tight bottom ring 7 is installed on the end face of the valve stem 6, and a flow-limiting protrusion 9 is placed on the side of the valve stem 6. The side cross-sectional shape of the flow-limiting protrusion 9 is an equidistant stepped shape.

[0031] The upper surface of the air-tight bottom ring 7 is fitted with a septum 8, which is made of rubber in one piece and arranged in a conical shape.

[0032] Specifically, the symmetrical arrangement of the gas balance component 4 and the toothed plate 5 prevents the two ends of the irregularly shaped block 46 from being excessively pushed by the exhaust gas. The irregularly shaped block 46 is more symmetrical in the expanded gas chamber inside the vent valve body 1, and there will be no shape distortion. From the perspective of spatial shape, the problem of gas compression and expansion in certain areas is reduced. In addition, the conical septum 8 can separate and block the exhaust gas at the top, reduce the accumulation at the top and the difference in the amount of exhaust gas, so that the exhaust gas is more balanced in and out.

[0033] The maximum elastic modulus of the diaphragm 8 does not exceed the diameter of the vent valve body 1; for example, such as Figures 3-4 As shown.

[0034] The conical center of the diaphragm 8 is aligned with the vent valve body 1.

[0035] One end of the vent valve body 1 is provided with a vent 10, and the center of the vent 10 coincides with the top center of the diaphragm 8.

[0036] Specifically, by limiting the elastic modulus of the septum 8, the septum 8 will not completely fill the top of the vent valve body 1, the top space of the vent valve body 1 will not be independent of the lower space, the connectivity of the exhaust gas is guaranteed, and the vent 10 is aligned with the center of the septum 8, so that the exhaust gas can be discharged smoothly.

[0037] Working principle: First, VOC exhaust gas is introduced into the air inlet 2 of the vent valve body 1, so that the inner cavity of the vent valve body 1 is filled with exhaust gas. Then, the continuously filling exhaust gas will push open the spring push block 3, so that the bottom space of the vent valve body 1 will continuously increase, making it easier to accommodate more exhaust gas.

[0038] After that, the spring push block 3 will drive the central plate 41 to move synchronously, further releasing the square frame 45 installed on the side of the central plate 41 from the locked state of the concave top plate 47. As the gas continues to fill, the vertical displacement of the central plate 41 is greater. Then the irregularly shaped locking block 46 installed with the square frame 45 meshes with the toothed plate 5, which can be used to balance and suppress the exhaust gas. Due to the good locking effect of the meshing motion, it can also be used for exhaust gas treatment with constant gas volume.

[0039] Then, the other vent valve bodies 1 are linearly assembled and installed. The exhaust gas flows through multiple vent valve bodies 1. The central plate 41 continues to move, which will cause the positioning ring 42 to engage with the valve stem 6. At this time, the space inside the vent valve body 1 is the largest. The exhaust gas further impacts the diaphragm 8. The diaphragm 8 elastically covers the exhaust gas and finally discharges through the vent 10.

[0040] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0041] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0042] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A VOC exhaust gas treatment pressure differential balancing and connecting component based on pressure feedback, characterized in that: The device includes a vent valve body (1), one end of which has an air inlet (2). A spring push block (3) is movably engaged at the top of the air inlet (2). The spring push block (3) is fitted with a gas balance component (4). A toothed plate (5) is provided on the inner side of the vent valve body (1). The gas balance component (4) includes a central plate (41) installed at one end of the spring push block (3). A positioning ring (42) is fixedly connected to the upper surface of the central plate (41). A valve stem (6) is inserted into the inner cavity of the positioning ring (42). A straight block (44) is provided on the inner side of the central plate (41). An inclined plate (43) is slidably fitted on the surface of the straight block (44).

2. The VOC exhaust gas treatment pressure difference balancing and connecting component based on pressure feedback according to claim 1, characterized in that: A square frame (45) is fixedly connected to one side of the inclined plate (43), and a concave top plate (47) is snapped onto the end face of the square frame (45). The side of the concave top plate (47) is fitted and connected to the vent valve body (1).

3. The VOC exhaust gas treatment pressure difference balancing and connecting component based on pressure feedback according to claim 2, characterized in that: The inner side of the square frame (45) is provided with an irregularly shaped card block (46), which engages with the toothed plate (5) through an arc-shaped hole.

4. The VOC exhaust gas treatment pressure difference balancing and connecting component based on pressure feedback according to claim 1, characterized in that: The number of gas balancing components (4) and toothed plates (5) is two sets, and the two sets of gas balancing components (4) and toothed plates (5) are arranged symmetrically.

5. The VOC exhaust gas treatment pressure difference balancing and connecting component based on pressure feedback according to claim 1, characterized in that: An air-tight bottom ring (7) is installed on the end face of the valve stem (6), and a flow-limiting protrusion (9) is placed on the side of the valve stem (6). The side cross-section shape of the flow-limiting protrusion (9) is an equidistant stepped shape.

6. The VOC exhaust gas treatment pressure differential balance and connection component based on pressure feedback according to claim 5, characterized in that: The upper surface of the air-tight bottom ring (7) is fitted with a septum (8), which is made of rubber in one piece and arranged in a conical shape.

7. The VOC exhaust gas treatment pressure differential balance and connection component based on pressure feedback according to claim 6, characterized in that: The maximum elastic modulus of the septum (8) does not exceed the diameter of the vent valve body (1), and the conical center of the septum (8) is aligned with the vent valve body (1).

8. The VOC exhaust gas treatment pressure difference balancing and connecting component based on pressure feedback according to claim 1, characterized in that: One end of the ventilation valve body (1) is provided with a ventilation port (10), and the center of the ventilation port (10) coincides with the top center of the diaphragm (8).

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