Positive and negative pressure resistant sealing device for two-way valve plates on balance shafts for drainage pipes
The positive and negative pressure resistant sealing device for sewer pipelines maintains the water seal by using a pressure conduction chamber and magnetic core system to prevent the odor-blocking flap from opening under negative pressure, effectively blocking odors from entering the usage space.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- 姜成旭
- Filing Date
- 2023-06-06
- Publication Date
- 2026-07-30
AI Technical Summary
Existing sewer pipeline odor prevention devices fail to maintain the water seal under negative pressure conditions, allowing odors to overflow into the usage space due to the odor-blocking flap opening and water seal being sucked out by negative pressure.
A positive and negative pressure resistant sealing device for a balance shaft two-way valve plate, comprising a pressure conduction chamber, pressure conductor, and balance shaft power two-way valve plate, utilizing a pressure-conducting membrane, conductive connecting rod, and magnetic core system to maintain the seal under varying pressure conditions.
Prevents the odor-blocking flap from opening under negative pressure, ensuring the water seal remains intact, thereby preventing odors from overflowing into the usage space.
Smart Images
Figure 0007897464000001 
Figure 0007897464000002 
Figure 0007897464000003
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of water seal protection for sewer pipelines, and particularly to a positive and negative pressure resistant sealing device for a balance shaft two-way valve plate for sewer pipelines.
Background Art
[0002] A sewer pipeline is a pipeline for discharging sewage from a building and is also an important public facility that supports a city. In order to prevent the backflow of sewage and toxic gases in the sewer pipeline, it is common to install an odor prevention device in the sewer pipeline. The odor prevention device for sewer pipelines generally adopts a water seal structure, and only the water seal realizes the isolation between the use space and the sewer pipeline, and realizes the technology of odor prevention and harmful gas backflow prevention.
[0003] For example, the "Automatic Sealing Sewer Pipeline Odor Prevention Appliance" of the Chinese Utility Model Patent with Publication Number CN201809833U is designed to be installed in any sewer pipeline. During use, the odor prevention flap opens downward due to the weight of the water flow, so that the water flow flows normally. When not in use, the odor prevention flap and the automatic odor prevention valve are closed due to the weight of the counterweight. However, when a large negative pressure occurs in an existing sewer pipeline, the air pressure above the odor prevention flap becomes higher than the air pressure below, causing the odor prevention flap to open, and the water seal in the drainage device to be sucked and removed by the negative pressure of the sewer pipeline, so that the protection function of the water seal is completely destroyed. Therefore, when the air pressure in the sewer pipeline becomes higher than the air pressure in the use space, the odor overflows into the use space, failing to meet the increasingly high environmental quality requirements of modern urban architecture.
Summary of the Invention
Problems to be Solved by the Invention
[0004] In view of the shortcomings of the prior art, the present invention provides a positive negative pressure resistant sealing device for a balance shaft two-way valve plate for drainage pipes that solves the technical problem in which, when a large negative pressure occurs in an existing sewer, the air pressure above the odor-blocking flap becomes higher than the air pressure below it, causing the odor-blocking flap to open, and the water seal in the drainage device is sucked out by the negative pressure in the sewer pipe, thus completely destroying the protective function of the water seal, and consequently the air pressure in the sewer pipe becomes higher than the air pressure in the usage space, causing odors to overflow into the usage space. [Means for solving the problem]
[0005] To achieve the above objective, the positive and negative pressure resistant sealing device for a two-way valve plate of a balance shaft for drainage pipes of the present invention includes a main body, a pressure conductor, and a balance shaft power two-way valve plate, wherein the main body comprises a pressure conduction chamber and a drainage chamber, the pressure conduction chamber is located on one side of the drainage chamber, the pressure conductor is disposed inside the pressure conduction chamber of the main body, the upper end of the pressure conduction chamber has an inclined slope structure, an opening is provided at the upper end of the pressure conduction chamber, a pressure conduction membrane is provided at the upper end of the opening, the lower end of the pressure conduction membrane is in contact with the upper wall surface of the pressure conductor, a conduction connecting rod is fixedly installed at the lower end of the pressure conductor, a position-restricting bottom cover is fixedly installed at the lower wall surface of the pressure conduction chamber, the conduction connecting rod penetrates the position-restricting bottom cover, and the lower end of the conduction connecting rod has an arcuate surface structure The structure is characterized in that a pair of balance brackets are fixedly installed on the lower wall surface of the position-regulating bottom cover, the balance shaft power two-way valve plate is rotatably connected between the pair of balance brackets, a support rod is fixedly installed on the upper left wall surface of the balance shaft power two-way valve plate, the upper end of the support rod has an arcuate surface structure, the lower end of the transmission connecting rod is in contact with the upper end of the support rod, an on / off valve plate is fixedly installed on the right end of the balance shaft power two-way valve plate, the on / off valve plate is in contact with the lower end opening of the drain chamber, a magnetic core bracket is fixedly installed between the pair of balance brackets and above the balance shaft power two-way valve plate, and a magnetic core power source is provided for the magnetic core bracket and the balance shaft power two-way valve plate.
[0006] Preferably, the remaining space of the pressure conduction chamber formed on one side of the lumen of the main body is the drainage chamber.
[0007] Preferably, the magnetic core power source comprises a first fixed magnetic core, a second fixed magnetic core, a first movable magnetic core, and a second movable magnetic core, wherein the first and second fixed magnetic cores are fixedly installed on the magnetic core bracket sequentially from left to right, and the first and second movable magnetic cores are fixedly installed on the balance shaft power two-way valve plate sequentially from left to right.
[0008] Preferably, the pressure conductor, the pressure transmission membrane, and the position-regulating bottom cover are parallel to each other.
[0009] Preferably, a position regulating plate is fixedly installed on the lower wall surface of the pressure conductor and on one side of the transmission connecting rod, and the position regulating plate is located inside the pressure transmission chamber.
[0010] Preferably, a rotating shaft is fixedly installed on the front and rear wall surfaces of the balance shaft power two-way valve plate, and the balance shaft power two-way valve plate is rotatably connected between the pair of balance brackets by the rotating shaft.
[0011] Preferably, the lower wall surface of the position-regulating bottom cover and one side of the transmission connecting rod are provided with pneumatic conduction holes.
[0012] Preferably, a sealing ring is fixedly installed at the lower end of the drain chamber. [Effects of the Invention]
[0013] This invention provides a positive-negative pressure resistant sealing device for a balance shaft two-way valve plate in a drainage pipeline. In the event of a large negative pressure occurring in an existing sewer system, the air pressure above the odor-blocking flap becomes higher than the air pressure below it, causing the odor-blocking flap to open. The water seal in the drainage device is then sucked out by the negative pressure in the sewer pipeline and removed, completely destroying the protective function of the water seal. Consequently, the air pressure in the sewer pipeline becomes higher than the air pressure in the usage space, solving the technical problem of odors overflowing into the usage space. This invention solves the technical problem of odors overflowing into the usage space due to the functions of a pressure-conducting membrane, a conductive connecting rod, and a pressure conductor. When the pressure above the water seal is higher than the pressure below it, the pressure-conducting membrane presses against the pressure conductor, causing the pressure conductor to tend to move downwards. The pressure conductor presses against the conductive connecting rod, which then comes into contact with the support rod. This prevents the support rod from rotating and pushing the balance shaft power two-way valve plate. Therefore, it prevents the opening valve plate from being pulled open by the balance shaft power two-way valve plate, effectively preventing the emission of odors in the sewer system. [Brief explanation of the drawing]
[0014] The above and other objectives, features, and advantages of the present invention will become clearer by describing embodiments of the present invention in detail with reference to the drawings.
[0015] [Figure 1] This is a schematic diagram of the three-dimensional structure of a positive / negative pressure resistant sealing device for a two-way valve plate on a balance shaft for drainage pipes according to the present invention. [Figure 2] This is a schematic front view diagram of the positive / negative pressure resistant sealing device for a two-way valve plate balance shaft for drainage pipes according to the present invention. [Figure 3] This is a schematic cross-sectional diagram of the positive / negative pressure resistant sealing device for a two-way valve plate balance shaft for drainage pipes according to the present invention. [Figure 4] This is a schematic plan view of the positive / negative pressure resistant sealing device for a two-way valve plate balance shaft for drainage pipes according to the present invention. [Figure 5] This is a schematic diagram of the exploded structure of the positive / negative pressure resistant sealing device for a two-way valve plate balance shaft for drainage pipes according to the present invention. [Modes for carrying out the invention]
[0016] Hereinafter, the technical proposals according to embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of embodiments of the present invention. Clearly, these embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that a person skilled in the art could obtain without creative effort based on embodiments of the present invention are also covered by the present invention.
[0017] Referring to Figures 1 to 5, the present invention provides a technical proposal for a positive / negative pressure resistant sealing device for a balance shaft two-way valve plate for a drainage pipeline, comprising a main body 1, a pressure conductor 4, and a balance shaft power two-way valve plate 9. The main body 1 comprises a pressure conduction chamber 2 and a drainage chamber 3, with the pressure conduction chamber 2 located on one side of the drainage chamber 3. The pressure conductor 4 is arranged inside the pressure conduction chamber 2 of the main body 1. The upper end of the pressure conduction chamber 2 has an inclined slope structure, and an opening is provided at the upper end of the pressure conduction chamber 2. A pressure conduction membrane 7 is provided at the upper end of the opening, and the lower end of the pressure conduction membrane 7 is in contact with the upper wall surface of the pressure conductor 4. A conduction connecting rod 5 is fixedly installed at the lower end of the pressure conductor 4, and a position-restricting bottom cover 8 is fixedly installed on the lower wall surface of the pressure conduction chamber 2. The conduction connecting rod 5 penetrates the position-restricting bottom cover 8, and the lower end of the conduction connecting rod 5 has an arcuate surface structure. A pair of balance brackets 12 are fixedly installed on the lower wall surface of the position-restricting bottom cover 8. The balance shaft power two-way valve plate 9 is rotatably connected between a pair of balance brackets 12. A support rod 10 is fixed to the upper left wall surface of the balance shaft power two-way valve plate 9, and the upper end of the support rod 10 has an arcuate surface structure. The lower end of the transmission connecting rod 5 is in contact with the upper end of the support rod 10, and an on-off valve plate 14 is fixed to the right end of the balance shaft power two-way valve plate 9, and the on-off valve plate 14 is in contact with the lower end opening of the drain chamber 3. A magnetic core bracket 13 is fixed between the pair of balance brackets 12 and above the balance shaft power two-way valve plate 9. A magnetic core power source is provided in the magnetic core bracket 13 and the balance shaft power two-way valve plate 9, and the magnetic core power source comprises a first fixed magnetic core 16, a second fixed magnetic core 17, a first movable magnetic core 18, and a second movable magnetic core 19. The first fixed magnetic core 16 and the second fixed magnetic core 17 are fixed to the magnetic core bracket 13 sequentially from left to right, and the first movable magnetic core 18 and the second movable magnetic core 19 are fixed to the balance shaft power two-way valve plate 9 sequentially from left to right. The pressure conductor 4, the pressure conducting membrane 7, and the position regulating bottom cover 8 are parallel to each other. A position regulating plate is fixed to the lower wall surface of the pressure conductor 4 and to one side of the transmission connecting rod 5, and this position regulating plate is located inside the pressure conducting chamber 2.Rotating shafts 11 are fixedly installed on the front and rear walls of the balance shaft power two-way valve plate 9, and the balance shaft power two-way valve plate 9 is rotatably connected between a pair of balance brackets 12 by the rotating shafts 11. Air pressure transmission holes 6 are provided on the lower wall surface of the position-regulating bottom cover 8 and on one side of the transmission connecting rod 5, and a seal ring 15 is fixedly installed at the lower end opening of the drain chamber 3.
[0018] Since the detailed connection methods are publicly known in this field, the following will mainly describe the operating principle and process. The specific operation is as follows.
[0019] In this embodiment, as shown in the drawing, when negative pressure is generated in the sewer pipeline during use, a pressure difference is created between the upper and lower ends of the pressure conduction membrane 7 (the pressure conduction membrane 7 is made of a highly elastic rubber material), and the pressure on the upper surface of the pressure conduction membrane 7 becomes greater than the pressure at the lower end. The pressure generated by this pressure difference acts on the conductor 4. The pressure conductor 4 generates downward pressure, and therefore the lower end of the transmission connecting rod 5 acts on the upper end of the support rod 10 of the balance shaft power two-way valve plate 9. Because the arcuate surface of the lower end of the transmission connecting rod 5 contacts the arcuate surface of the upper end of the support rod 10, the rotation axis 11 of the balance shaft power two-way valve plate 9 generates a resistance torque that prevents the opening of the on-off valve plate 14. On the other hand, when negative pressure is applied in the sewer pipeline, a pressure difference is also created above and below the on-off valve plate 14 of the balance shaft power two-way valve plate 9, and because the upper pressure is greater than the lower pressure, it generates downward pressure and a torque that tries to open the on-off valve plate 14. If the torque attempting to close the valve plate 14 is greater than or equal to the torque attempting to open it, the balance shaft power two-way valve plate 9 remains closed, the valve plate 14 is pressed against the seal ring 15 of the main body 1, the second fixed magnetic core 17 and the second movable magnetic core 19 are attracted to each other, preventing the passage of negative pressure and preventing the destruction of the water seal due to negative pressure in the sewer pipeline. On the other hand, if positive pressure is generated in the sewer pipeline, or if sewage flows backward, the lower part of the valve plate 14 of the balance shaft power two-way valve plate 9 is subjected to pressure and closes (this is the principle of a check valve). During drainage, the water pressure acting on the pressure-sensitive membrane 7 is less than the water pressure on the valve plate 14. Therefore, the torque preventing the valve plate 14 from opening is less than the torque attempting to open it. The balance shaft power two-way valve plate 9 releases the drainage, and when drainage stops, the mutual attraction between the second fixed magnetic core 17 and the second movable magnetic core 19, and the mutual repulsion between the first fixed magnetic core 16 and the first movable magnetic core 18 generate a torque that attempts to close the valve plate 14. As a result, the valve plate 14 closes, separating the water seal in the sewer pipeline from the usable space 14.
[0020] Note that in this specification, relational terms such as first and second are used only to distinguish one component or operation from another, and do not necessarily require or imply any such actual relationship or order between these components or operations.
Explanation of Reference Numerals
[0021] 1 Main body 2 Pressure conduction chamber 3 Drainage chamber 4 Pressure conductor 5 Conduction connecting rod 6 Pneumatic conduction hole 7 Pressure conduction membrane 8 Position regulating bottom cover 9 Balance shaft power two-way valve plate 10 Support rod 11 Rotating shaft 12 Balance bracket 13 Core bracket 14 On-off valve plate 15 Seal ring 16 First fixed core 17 Second fixed core 18 First movable core 19 Second movable core
Claims
1. The valve comprises a main body (1), a pressure conductor (4), and a balance shaft power two-way valve plate (9), the main body (1) having a pressure conduction chamber (2) and a drainage chamber (3), the pressure conduction chamber (2) being located on one side of the drainage chamber (3), the pressure conductor (4) being positioned inside the pressure conduction chamber (2) of the main body (1), the upper end of the pressure conduction chamber (2) having an inclined slope structure, and an opening being provided at the upper end of the pressure conduction chamber (2), the opening A pressure-conducting membrane (7) is provided on the upper end surface of the pressure-conducting membrane (7), the lower end of the pressure-conducting membrane (7) is in contact with the upper wall surface of the pressure conductor (4), a conduction connecting rod (5) is fixedly installed on the lower end of the pressure conductor (4), a position-restricting bottom cover (8) is fixedly installed on the lower wall surface of the pressure-conducting chamber (2), the conduction connecting rod (5) penetrates the position-restricting bottom cover (8), the lower end of the conduction connecting rod (5) has an arcuate surface structure, and the lower wall surface of the position-restricting bottom cover (8) A pair of balance brackets (12) are fixedly installed, the balance shaft power two-way valve plate (9) is rotatably connected between the pair of balance brackets (12), a support rod (10) is fixedly installed on the upper left wall surface of the balance shaft power two-way valve plate (9), the upper end of the support rod (10) has an arcuate surface structure, the lower end of the transmission connecting rod (5) is in contact with the upper end of the support rod (10), an on-off valve plate (14) is fixedly installed on the right end of the balance shaft power two-way valve plate (9), the on-off valve plate (14) is in contact with the lower end opening of the drain chamber (3), a magnetic core bracket (13) is fixedly installed between the pair of balance brackets (12) and above the balance shaft power two-way valve plate (9), and a magnetic core power source is provided on the magnetic core bracket (13) and the balance shaft power two-way valve plate (9). A positive / negative pressure resistant sealing device for a two-way valve plate on a balance shaft for drainage pipes.
2. The pressure conductor (4), the pressure conductive membrane (7), and the position-regulating bottom cover (8) are parallel to each other, A positive / negative pressure resistant sealing device for a two-way valve plate of a balance shaft for a drainage pipe, as described in claim 1.
3. A position-restricting bottom cover (8) is fixedly installed on the lower wall surface of the pressure conductor (4) and on one side of the conduction connecting rod (5), and the position-restricting bottom cover (8) is positioned at the bottom end of the pressure conduction chamber (2) to restrict the downward movement position of the pressure conductor (4). A positive / negative pressure resistant sealing device for a two-way valve plate of a balance shaft for a drainage pipe, as described in claim 1.
4. Rotating shafts (11) are fixedly installed on the front and rear wall surfaces of the balance shaft power two-way valve plate (9), and the balance shaft power two-way valve plate (9) is rotatably connected between the pair of balance brackets (12) by the rotating shafts (11). A positive / negative pressure resistant sealing device for a two-way valve plate of a balance shaft for a drainage pipe, as described in claim 1.
5. The lower wall surface of the position-regulating bottom cover (8) and one side of the conduction connecting rod (5) are provided with air pressure conduction holes (6). A positive / negative pressure resistant sealing device for a two-way valve plate of a balance shaft for a drainage pipe, as described in claim 1.
6. A sealing ring (15) is fixedly installed at the lower end of the drainage chamber (3). A positive / negative pressure resistant sealing device for a two-way valve plate of a balance shaft for a drainage pipe, as described in claim 1.