A valve body auxiliary structure for exhaust gas, waste water recovery

Abstract

The utility model discloses a valve body auxiliary structure for waste gas, waste water recovery relates to valve technical field, including valve body, the valve body output and input respectively fixedly connected with output pipe section and input pipe section, the input pipe section is provided with filter assembly and filter seal assembly, the utility model provides technical scheme, through setting up filter assembly, through the corresponding input of tubular filter screen setting, makes waste gas waste water first through filter screen inside space and flows, particulate matter, viscous impurity is intercepted in filter screen inside, and the medium after filtering enters valve body from the space between filter screen outside and filter drum and goes into the output port, effectively prevents the impurity and enters the valve body import end and piles up, reduces the risk of spool jam from the source, and the flow regulation accuracy is promoted, and the fixed lid is connected with filter drum simultaneously with the screw thread, and the tubular filter screen is convenient for opening regularly and is replaced or cleaned, and the maintenance operation is simple, can keep the filtering effect for a long time, prolongs the service life of valve body.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an auxiliary structure for valve body used for waste gas and wastewater recovery. Background Technology

[0002] In waste gas and wastewater recovery and treatment systems, the valve body, as the core component of flow control, directly affects the recovery efficiency and system safety due to its operational stability.

[0003] When using existing valve bodies for waste gas and wastewater recovery, particulate matter and viscous impurities contained in the waste gas and wastewater tend to accumulate at the valve body inlet, causing the valve core to jam and reducing the accuracy of flow regulation. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an auxiliary structure for valve body for waste gas and wastewater recovery, so as to solve the problem that when the valve body for waste gas and wastewater recovery is used, particulate matter and viscous impurities contained in the waste gas and wastewater are easily accumulated at the valve body inlet, resulting in valve core jamming and reduced flow regulation accuracy.

[0005] In view of this, the present invention provides an auxiliary structure for a valve body for waste gas and wastewater recovery, including a valve body, wherein an output pipe section and an input pipe section are fixedly connected to the output end and the input end of the valve body, respectively, and the input pipe section is provided with a filter assembly and a filter sealing assembly, and one end of the output pipe section and the input pipe section are fixedly connected to a first flange and a second flange, respectively. The filter assembly includes a filter cylinder, an inlet, an outlet, a cylindrical filter screen, and a fixed cover. The inlet and outlet are respectively located at the bottom and one side of the filter cylinder. The cylindrical filter screen is located inside the filter cylinder and is positioned corresponding to the inlet. The fixed cover is placed on the end of the filter cylinder away from the outlet.

[0006] Optionally, the input port is connected to the output pipe section at the end away from the valve body, and the output port is connected to the input pipe section near the input end of the valve body.

[0007] Optionally, the inner space of the cylindrical filter screen is connected to the inlet, and the space between the outer side of the cylindrical filter screen and the filter cylinder is connected to the outlet.

[0008] Optionally, the fixing cover and the filter cylinder are connected by threads.

[0009] Optionally, the filter sealing assembly includes a fixing frame, a fixing rod, a sealing plate, a return spring, and a top rod. The fixing frame is fixedly connected to the inside of the inlet. The fixing rod passes through the fixing frame and is arranged along the axial direction of the filter cylinder. The sealing plate is fixed to the end of the fixing rod near the inlet. The return spring is sleeved on the outside of the fixing rod. One end of the top rod is fixedly connected to the inside of the fixing cover.

[0010] Optionally, the fixing rod is slidably connected to the middle of the fixing frame, one end of the return spring is fixedly connected to the end of the fixing rod away from the fixing frame, and the other end of the return spring abuts against one side surface of the fixing frame.

[0011] Optionally, when the fixed cover is opened, one side surface of the sealing plate abuts against the side surface of the inlet, and when the fixed cover is installed, one end of the top rod abuts against one end of the fixed rod.

[0012] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages: 1. This utility model discloses an auxiliary structure for a valve body used for waste gas and wastewater recovery. It includes a filter assembly, specifically a cylindrical filter screen positioned corresponding to the inlet. Waste gas and wastewater first flow through the inner space of the filter screen, where particulate matter and viscous impurities are intercepted. The filtered medium then enters the valve body through the outlet from the space between the outer side of the filter screen and the filter cylinder. This effectively prevents impurities from accumulating at the valve body inlet, reducing the risk of valve core jamming at the source and improving flow regulation accuracy. Simultaneously, the fixed cover and filter cylinder are connected by threads, facilitating periodic opening for replacement or cleaning of the cylindrical filter screen. Maintenance is simple, maintaining filtration effectiveness for a long time and extending the valve body's service life.

[0013] 2. This utility model discloses an auxiliary structure for a valve body used in waste gas and wastewater recovery. It incorporates a filter sealing assembly. Specifically, automatic sealing is achieved through the cooperation of a return spring, a sealing plate, and a push rod. When the fixed cover is opened for maintenance, the return spring pushes the sealing plate against the inlet to prevent media leakage and ensure maintenance safety. When the fixed cover is installed, the push rod pushes the fixing rod to disengage the sealing plate from the inlet, without affecting the normal flow of media. This structure achieves automatic sealing during maintenance and automatic opening during operation without additional operation. The sealing is reliable and does not increase operational complexity, improving the practicality and safety of the auxiliary structure.

[0014] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of a partial structure of the filter assembly of this utility model; Figure 3 This is a partial sectional view of the side structure of the filter assembly of this utility model; Figure 4 This utility model Figure 3 A magnified view of a portion of point A in the middle.

[0016] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. Output pipe section; 3. Input pipe section; 4. First flange; 5. Second flange; 601. Filter cylinder; 602. Input port; 603. Output port; 604. Cylindrical filter screen; 605. Fixing cover; 701. Fixing bracket; 702. Fixing rod; 703. Sealing plate; 704. Return spring; 705. Push rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0018] The following describes in detail, with reference to the accompanying drawings, an auxiliary structure for valve body used in the recovery of waste gas and wastewater according to an embodiment of the present invention. Example

[0019] For easier understanding, please refer to Figures 1 to 4 This utility model provides an embodiment of a valve body auxiliary structure for waste gas and wastewater recovery, including a valve body 1, an output pipe section 2 and an input pipe section 3 fixedly connected to the output end and the input end of the valve body 1 respectively, the input pipe section 3 is provided with a filter assembly and a filter sealing assembly, and one end of the output pipe section 2 and the input pipe section 3 is fixedly connected to a first flange 4 and a second flange 5 respectively. The filter assembly includes a filter cylinder 601, an inlet 602, an outlet 603, a cylindrical filter screen 604, and a fixing cover 605. The inlet 602 and the outlet 603 are respectively located at the bottom and one side of the filter cylinder 601. The cylindrical filter screen 604 is located inside the filter cylinder 601 and is positioned corresponding to the inlet 602. The fixing cover 605 covers the end of the filter cylinder 601 away from the outlet 603. The inlet 602 is connected to the outlet pipe section 2 away from the valve body 1. The outlet 603 is connected to the inlet pipe section 3 near the input end of the valve body 1. The inner space of the cylindrical filter screen 604 is connected to the inlet 602. The space between the outer side of the cylindrical filter screen 604 and the filter cylinder 601 is connected to the outlet 603. The fixing cover 605 is threadedly connected to the filter cylinder 601.

[0020] It should be noted that the filter cartridge 601 is made of acid and alkali resistant polypropylene or 316L stainless steel, suitable for the corrosive environment of waste gas and wastewater; the inlet 602 is located at the bottom of the filter cartridge 601, allowing the medium to directly enter the inner side of the cylindrical filter screen 604, using gravity to improve the impurity deposition effect; the cylindrical filter screen 604 is preferably made of 316L stainless steel, which has good wear resistance and corrosion resistance. Its structure, with its inner side connected to the inlet 602 and its outer side connected to the outlet 603, ensures that the medium must be filtered before entering the valve body 1, ensuring the interception effect; the threaded connection between the fixed cover 605 and the filter cartridge 601 not only facilitates disassembly and assembly but also achieves a preliminary seal through the threaded engagement, preventing medium leakage. The first flange 4 and the second flange 5 facilitate quick docking of this auxiliary structure with the external piping system, improving installation efficiency. Example

[0021] In some embodiments, such as Figure 3 , Figure 4 As shown, the filter sealing assembly includes a fixing frame 701, a fixing rod 702, a sealing plate 703, a return spring 704, and a top rod 705. The fixing frame 701 is fixedly connected to the inside of the inlet 602. The fixing rod 702 passes through the fixing frame 701 and is arranged axially along the filter cylinder 601. The sealing plate 703 is fixed to the end of the fixing rod 702 near the inlet 602. The return spring 704 is sleeved on the outside of the fixing rod 702. One end of the top rod 705 is fixedly connected to the inside of the fixing cover 605. The fixing rod 702 is slidably connected to the middle of the fixing frame 701. One end of the return spring 704 is fixedly connected to the end of the fixing rod 702 away from the fixing frame 701. The other end of the return spring 704 abuts against one side surface of the fixing frame 701. When the fixing cover 605 is open, one side surface of the sealing plate 703 abuts against one side surface of the inlet 602. When the fixing cover 605 is installed, one end of the top rod 705 abuts against one end of the fixing rod 702.

[0022] It should be noted that the fixing frame 701 provides stable support for the filter sealing assembly, and its fixed connection with the inside of the inlet 602 ensures that the structure does not shake during operation; the sliding connection design between the fixing rod 702 and the fixing frame 701 ensures that the sealing plate 703 can move smoothly along the axial direction of the filter cartridge 601; the sealing plate 703 is preferably made of acid and alkali resistant rubber or polytetrafluoroethylene, and its size is slightly larger than the inner diameter of the inlet 602 to ensure that it can completely cover the inlet 602 when sealing; the return spring 704 is always in a pre-compressed state. When the fixing cover 605 is opened, the spring force pushes the fixing rod 702 to move the sealing plate 703 towards the inlet 602, realizing automatic sealing; the length of the push rod 705 is designed according to the position of the fixing cover 605 after installation to ensure that the fixing cover 605 can accurately push the fixing rod 702 when tightened, so that the sealing plate 703 is separated from the inlet 602, and at this time the return spring 704 is in a further compressed state, reserving elasticity for automatic sealing when the fixing cover 605 is opened.

[0023] Working principle: Waste gas or wastewater enters the input pipe section 3 through the external pipeline and the second flange 5. It first flows into the inner space of the cylindrical filter screen 604 from the input port 602 of the filter cylinder 601. During the flow, particulate matter and viscous impurities in the medium are intercepted by the cylindrical filter screen 604. The filtered clean medium passes through the filter screen and enters the space between the outer side and the filter cylinder 601, and then flows into the input end of the valve body 1 through the output port 603, realizing the pretreatment of the medium. After being regulated by the valve body 1, the medium is discharged to the subsequent treatment system through the output pipe section 2 and the first flange 4. When the cylindrical filter screen 604 needs to be cleaned or replaced, unscrew the fixing cover 605. At this time, the push rod 705 disengages from the fixing rod 702, the return spring 704 releases its elastic force, and pushes the fixing rod 702 to move the sealing plate 703 towards the inlet 602 and press it against it, so as to realize the automatic sealing of the inlet 602 and prevent the medium from leaking. After maintenance, tighten the fixing cover 605 again. The push rod 705 moves with the fixing cover 605 to push against the fixing rod 702, compress the return spring 704 and move the sealing plate 703 away from the inlet 602, and the medium resumes flow. The entire process can be completed without additional operation to switch between sealing and opening.

[0024] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A valve body auxiliary structure for waste gas and wastewater recovery, characterized in that: The valve body (1) includes an output pipe section (2) and an input pipe section (3) which are fixedly connected to the output end and the input end of the valve body (1), respectively. The input pipe section (3) is provided with a filter assembly and a filter sealing assembly. One end of the output pipe section (2) and the input pipe section (3) are fixedly connected to the first flange (4) and the second flange (5), respectively. The filter assembly includes a filter cylinder (601), an inlet (602), an outlet (603), a cylindrical filter screen (604), and a fixing cover (605). The inlet (602) and the outlet (603) are respectively located at the bottom and one side of the filter cylinder (601). The cylindrical filter screen (604) is located inside the filter cylinder (601) and is positioned corresponding to the inlet (602). The fixing cover (605) is placed on the end of the filter cylinder (601) away from the outlet (603).

2. The valve body auxiliary structure for waste gas and wastewater recovery according to claim 1, characterized in that: The input port (602) is connected to the output pipe section (2) at the end away from the valve body (1), and the output port (603) is connected to the input pipe section (3) near the input end of the valve body (1).

3. The valve body auxiliary structure for waste gas and wastewater recovery according to claim 1, characterized in that: The inner space of the cylindrical filter screen (604) is connected to the inlet (602), and the space between the outer side of the cylindrical filter screen (604) and the filter cylinder (601) is connected to the outlet (603).

4. The valve body auxiliary structure for waste gas and wastewater recovery according to claim 1, characterized in that: The fixed cover (605) and the filter cylinder (601) are connected by threads.

5. The valve body auxiliary structure for waste gas and wastewater recovery according to claim 1, characterized in that: The filter sealing assembly includes a fixing frame (701), a fixing rod (702), a sealing plate (703), a return spring (704), and a top rod (705). The fixing frame (701) is fixedly connected to the inside of the inlet (602). The fixing rod (702) passes through the fixing frame (701) and is arranged axially along the filter cylinder (601). The sealing plate (703) is fixed to one end of the fixing rod (702) near the inlet (602). The return spring (704) is sleeved on the outside of the fixing rod (702). One end of the top rod (705) is fixedly connected to the inside of the fixing cover (605).

6. The valve body auxiliary structure for waste gas and wastewater recovery according to claim 5, characterized in that: The fixing rod (702) is slidably connected to the middle of the fixing frame (701), one end of the return spring (704) is fixedly connected to the end of the fixing rod (702) away from the fixing frame (701), and the other end of the return spring (704) abuts against one side surface of the fixing frame (701).

7. The valve body auxiliary structure for waste gas and wastewater recovery according to claim 1, characterized in that: When the fixed cover (605) is opened, one side surface of the sealing plate (703) abuts against one side surface of the inlet (602). When the fixed cover (605) is installed, one end of the top rod (705) abuts against one end of the fixed rod (702).

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