Positive and Negative Pressure Resistance Sealing Device for Balance Shaft Two-Way Valve Plate of Drainage Pipeline

Abstract

To protect the water seal of sewer pipes. [Solution] The present invention discloses a positive and negative pressure resistant seal device of a balance shaft two-way valve plate for drainage pipeline, which relates to the technical field of water seal protection of sewer pipeline. The positive and negative pressure resistant seal device of a balance shaft two-way valve plate for drainage pipeline of the present invention includes a main body, a pressure conductor, and a balance shaft power two-way valve plate, the main body has a pressure transmission chamber and a drain chamber, the pressure transmission chamber is located on one side of the drain chamber, and the pressure conductor is arranged inside the pressure transmission chamber of the main body. In the present invention, due to the functions of the pressure transmission membrane, the transmission connecting rod, and the pressure conductor, when the pressure above the water seal is higher than the pressure below, the pressure transmission membrane presses the pressure conductor, so that the pressure conductor has a tendency to move downward, the pressure conductor presses the transmission connecting rod, and the transmission connecting rod hits the support rod, so that the support rod can be prevented from rotating and pushing the balance shaft power two-way valve plate. Therefore, the opening and closing valve plate is prevented from being pulled by the balance shaft power two-way valve plate and opening, and the emission of odor in the sewer is effectively prevented.

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, which realizes the isolation between the use space and the sewer pipeline only by the water seal, 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 the 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 the 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 is sucked away by the negative pressure of the sewer pipeline and removed. Therefore, the protection function of the water seal is completely destroyed. Consequently, 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 buildings.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of the drawbacks of the prior art, when a large negative pressure occurs in an existing sewer, the air pressure above the odor-proof flap becomes higher than the air pressure below, causing the odor-proof flap to open, and the water seal in the drainage device is sucked and removed by the negative pressure of the sewer pipeline, so that the protection function of the water seal is completely destroyed. Therefore, the air pressure in the sewer pipeline becomes higher than the air pressure in the use space, and odors overflow into the use space. The present invention provides a positive and negative pressure resistant sealing device for a balance shaft two-way valve plate of a drainage pipeline to solve this technical problem.

Means for Solving the Problem

[0005] To achieve the above object, the positive and negative pressure resistant sealing device for the balance shaft two-way valve plate of the drainage pipeline of the present invention includes a main body, a pressure conductor, and a balance shaft power two-way valve plate. The main body is provided with 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 arranged 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 contacts 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 regulating bottom cover is fixedly installed on the lower wall surface of the pressure conduction chamber. The conduction connecting rod penetrates through the position regulating bottom cover. The lower end of the conduction connecting rod has an arc surface structure. 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 arc surface structure. The lower end of the transmission connecting rod contacts the upper end of the support rod. An opening and closing valve plate is fixedly installed at the right end of the balance shaft power two-way valve plate. The opening and closing valve plate contacts the lower port of the drainage chamber. A magnetic core bracket is fixedly installed between the pair of balance brackets and above the balance shaft power two-way valve plate. A magnetic core power source is provided on the magnetic core bracket and the balance shaft power two-way valve plate. This is the feature.

[0006] Preferably, the remaining space of the pressure conduction chamber formed by one side of the inner cavity of the main body is the drainage chamber.

[0007] Preferably, the magnetic core power source includes a first fixed magnetic core, a second fixed magnetic core, a first movable magnetic core, and a second movable magnetic core. The first fixed magnetic core and the second fixed magnetic core are fixedly installed on the magnetic core bracket sequentially from left to right, and the first movable magnetic core and the second movable magnetic core 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. The position regulating plate is arranged inside the pressure conduction 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 respectively. The balance shaft power two-way valve plate is rotatably connected between the pair of balance brackets by the rotating shaft.

[0011] Preferably, an air pressure conduction hole is provided on the lower wall surface of the position regulating bottom cover and on one side of the transmission connecting rod. This is the feature.

[0012] Preferably, a sealing ring is fixedly installed at the lower port of the drainage chamber.

Advantages of the Invention

[0013] The present invention provides a seal device for a balance shaft two-way valve plate for drainage pipelines that is resistant to positive and negative pressures, and when a large negative pressure occurs in an existing sewer system, the air pressure above the deodorizing flap becomes higher than the air pressure below it, causing the deodorizing flap to open, and the water seal in the drainage system is sucked in and removed by the negative pressure of the sewer pipeline, completely destroying the protective function of the water seal, so that the air pressure in the sewer pipeline becomes higher than the air pressure in the use space, and the odor overflows into the use space. The present invention solves the technical problem that, due to the functions of the pressure transmission membrane, the transmission connecting rod, and the pressure conductor, when the pressure above the water seal is higher than the pressure below it, the pressure transmission membrane presses the pressure conductor, so that the pressure conductor has a tendency to move downward, and the pressure conductor presses the transmission connecting rod, which then hits the support rod, preventing the support rod from rotating and pushing the balance shaft power two-way valve plate. This prevents the opening and closing valve plate from being pulled by the balance shaft power two-way valve plate and effectively prevents the emission of odor in the sewer system. [Brief description of the drawings]

[0014] The above and other objects, features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention with reference to the drawings.

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

[0016] Hereinafter, with reference to the accompanying drawings of the embodiments of the present invention, the technical solutions according to the embodiments of the present invention will be clearly and completely described. Obviously, this embodiment is only a part of the embodiments of the present invention, not all of the embodiments. Any other all embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.

[0017] Referring to FIGS. 1 to 5, the present invention provides a technical solution for a positive and negative pressure resistant sealing device of a balance shaft two-way valve plate for a drainage pipeline, which includes a main body 1, a pressure conductor 4, and a balance shaft power two-way valve plate 9. The main body 1 is provided with a pressure conduction chamber 2 and a drainage chamber 3, and the pressure conduction chamber 2 is 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, 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 contacts 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 regulating bottom cover 8 is fixedly installed on the lower wall surface of the pressure conduction chamber 2. The conduction connecting rod 5 penetrates through the position regulating bottom cover 8, and the lower end of the conduction connecting rod 5 has an arc surface structure. A pair of balance brackets 12 are fixedly installed on the lower wall surface of the position regulating bottom cover 8. 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, and the upper end of the support rod 10 has an arc surface structure. The lower end of the transmission connecting rod 5 contacts the upper end of the support rod 10, and an opening and closing valve plate 14 is fixedly installed at the right end of the balance shaft power two-way valve plate 9, and the opening and closing valve plate 14 contacts the lower port of the drainage 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. A magnetic core power source is provided on the magnetic core bracket 13 and the balance shaft power two-way valve plate 9, and the magnetic core power source includes 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 fixedly installed on the magnetic core bracket 13 in sequence from left to right, and the first movable magnetic core 18 and the second movable magnetic core 19 are fixedly installed on the balance shaft power two-way valve plate 9 in sequence from left to right. The pressure conductor 4, the pressure conduction membrane 7, and the position regulating bottom cover 8 are parallel to each other. A position regulating plate is fixedly installed on the lower wall surface of the pressure conductor 4 and on one side of the transmission connecting rod 5, and the position regulating plate is arranged inside the pressure conduction chamber 2.Rotating shafts 11 are fixedly installed on the front and rear wall surfaces of the balance shaft power two-way valve plate 9 respectively, 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. An air pressure conduction hole 6 is 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 sealing ring 15 is fixedly installed at the lower end port of the drainage chamber 3.

[0018] Since the detailed connection means are well-known techniques in this technical field, the operating principle and process will mainly be described below. The specific operation is as follows.

[0019] In the embodiment, as shown in the drawings, when a negative pressure is generated in the sewer pipeline during use, a pressure difference occurs 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 a downward pressure, and thus the lower end of the transmission rod 5 acts on the upper end of the support rod 10 of the balance shaft power two-way valve plate 9. Since the arc surface at the lower end of the transmission rod 5 contacts the arc surface at the upper end of the support rod 10, a resistance torque that prevents the opening of the on-off valve plate 14 is generated by the rotation shaft 11 of the balance shaft power two-way valve plate 9. On the other hand, when the negative pressure in the sewer pipeline acts, a pressure difference also occurs between the upper and lower sides of the on-off valve plate 14 of the balance shaft power two-way valve plate 9, and since the upper pressure is greater than the lower pressure, a downward pressure is generated, generating a torque to open the on-off valve plate 14. When the torque to close the on-off valve plate 14 is greater than or equal to the torque to open it, the balance shaft power two-way valve plate 9 maintains a closed state, the on-off valve plate 14 is pressed against the seal ring 15 of the main body 1, the second fixed core 17 and the second movable core 19 are attracted to each other, preventing the passage of negative pressure, and preventing the destruction of the water seal due to the negative pressure action in the sewer pipeline. On the other hand, when a positive pressure is generated in the sewer pipeline or when the sewage flows back, the lower part of the on-off valve plate 14 of the balance shaft power two-way valve plate 9 receives pressure and becomes closed (the principle of a check valve). During drainage, since the water pressure acting on the pressure-sensitive membrane 7 is smaller than the water pressure of the on-off valve plate 14, the torque that prevents the opening of the on-off valve plate 14 is smaller than the torque that tries to open the on-off valve plate 14, and the balance shaft power two-way valve plate 9 discharges the drainage. When the drainage stops, due to the mutual attraction between the second fixed core 17 and the second movable core 19 and the mutual repulsion between the first fixed core 16 and the first movable core 18, a torque to close the on-off valve plate 14 is generated, so the on-off valve plate 14 is closed, blocking the water seal in the sewer pipeline and the use space 14.

[0020] In addition, in this specification, relational terms such as first and second are used only to distinguish one component or operation from another component or operation, and do not necessarily require or imply any such actual relationship or order between these components or operations.

Explanation of Signs

[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. It includes a main body (1), a pressure conductor (4), and a balance shaft power two-way valve plate (9). The main body (1) is provided with a pressure conduction chamber (2) and a drainage chamber (3). The pressure conduction chamber (2) is 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. An opening is provided at the upper end of the pressure conduction chamber (2). A pressure conduction membrane (7) is provided on the upper end surface of the opening. The lower end of the pressure conduction membrane (7) contacts 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). A position regulating 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 regulating bottom cover (8). The lower end of the conduction connecting rod (5) has an arc surface structure. A pair of balance brackets (12) are fixedly installed on the lower wall surface of the position regulating bottom cover (8). 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 arc surface structure. The lower end of the transmission connecting rod (5) contacts the upper end of the support rod (10). An opening and closing valve plate (14) is fixedly installed at the right end of the balance shaft power two-way valve plate (9). The opening and closing valve plate (14) contacts the lower port of the drainage 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). A magnetic core power source is provided on the magnetic core bracket (13) and the balance shaft power two-way valve plate (9). It is characterized by this. A positive and negative pressure resistant sealing device for a balance shaft two-way valve plate of a drainage pipeline.

2. The pressure conductor (4), the pressure transmission membrane (7), and the position regulating bottom cover (8) are parallel to each other. It is characterized by this. The positive and negative pressure resistant sealing device for a balance shaft two-way valve plate of a drainage pipeline according to Claim 1.

3. A position regulating plate is fixedly installed on the lower wall surface of the pressure conductor (4) and on one side of the transmission connecting rod (5). The position regulating plate is arranged inside the pressure conduction chamber (2). It is characterized by this. The positive and negative pressure resistant sealing device for the balance shaft two-way valve plate of a drainage pipeline according to 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) respectively, 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), which is characterized in that The positive and negative pressure resistant sealing device for the balance shaft two-way valve plate of a drainage pipeline according to claim 1.

5. An air pressure conduction hole (6) is provided on the lower wall surface of the position regulating bottom cover (8) and on one side of the transmission connecting rod (5). This is characterized in that The positive and negative pressure resistant sealing device for the balance shaft two-way valve plate of a drainage pipeline according to claim 1.

6. A sealing ring (15) is fixedly installed at the lower port of the drainage chamber (3), which is characterized in that The positive and negative pressure resistant sealing device for the balance shaft two-way valve plate of a drainage pipeline according to claim 1.

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