CN216973636U - An automatic opening and closing negative pressure pipeline opening and closing device - Google Patents

Abstract

An automatic opening and closing negative pressure pipeline opening and closing device, comprising a plug (204) for blocking a suction port (3), a cabin body (2), and a floating body (205). The floating body (205) is arranged in the cabin body (2), the track cabin (1) is located in the liquid storage container (5); the inner wall of the orbit cabin (1) is connected to the outer wall of the cabin body (2); the A bottom plate (202) is provided at the bottom of the cabin body (2), and the bottom plate (202) is connected to the plug (204) through the connecting rod (203); Inside the orbital cabin cavity (102) of the cabin (1). In the utility model, the floating body is placed in the cabin, the cabin is connected with the plug through the connecting rod, and the blocking effect is good; the pure mechanical structure uses buoyancy to realize automatic opening and closing, has long service life and low failure rate, and is used for outdoor negative pressure discharge. It solves the industry problem of high failure rate of vacuum interface valve in traditional negative pressure drainage system.

Description

An automatic opening and closing negative pressure pipeline opening and closing device

technical field

The utility model relates to the technical field of liquid discharge, in particular to an automatic opening and closing negative pressure pipeline opening and closing device.

Background technique

Negative pressure drainage technology is known as an emerging drainage technology in the 21st century, but due to the fact that the traditional outdoor negative pressure drainage system "vacuum interface valve" needs to consume power or air source during the opening and closing process, the structure is complex, and the failure rate is high, the outdoor negative pressure drainage system The industry has been unable to unleash the technological potential.

CN 213572250 U An opening and closing device for a liquid storage chamber drainage pipeline, which discloses a blocking member and a buoyancy member which are connected as a whole and located in a guide channel communicated with a liquid storage chamber. The blocking member rises and falls to achieve the purpose of opening the drain pipe to block the drain pipe. However, the multiple buoyancy members and the buoyancy member and the blocking member are connected in series through the connecting rope; or the blocking member is connected to a swing rod hinged to the inner wall of the liquid storage chamber, and the buoyant member is connected to the swing rod through the connecting rope; the blocking effect relatively poor.

Utility model content

The technical problem to be solved by the utility model is to provide a negative pressure pipeline opening and closing device with good blocking effect, pure mechanical structure, long service life and low failure rate.

In order to solve the above technical problems, the utility model provides an automatic opening and closing negative pressure pipeline opening and closing device, which includes a plug for blocking the suction port, a cabin body, and a floating body. The floating body is arranged in the cabin, and the track cabin is located in the liquid storage container. The inner wall of the track cabin is connected to the outer wall of the cabin; a bottom plate is set at the bottom of the cabin, and the bottom plate is connected to the plug through a connecting rod; the floating body is placed in the cabin, and the cabin is connected to the plug through a connecting rod to improve the blocking effect. The whole body connected with the plug is located in the cavity in the orbital cabin of the orbital cabin.

By adopting the above purely mechanical structure, the high liquid level suction port is instantly opened, and the low liquid level suction port is instantly closed, and neither electric energy nor negative pressure gas source is required to be consumed during the opening and closing process.

Further, the cabin body is a box body, and a water passage hole is arranged on it; the track cabin is provided with a water passage hole of the rail cabin.

By adopting the above structure, the liquid flows into the water inlet and enters the cabin through the water hole, so that the floating body in the cabin rises and falls with the liquid level, and the opening and closing of the suction port is controlled.

Further, the cabin is composed of a limit frame composed of three vertical limit rods and a triangular limit frame on the top.

By adopting the above structure, the floating body is prevented from moving left and right from the position limit of the limiting frame, and the limiting frame also has a limiting function for the floating body in the vertical direction.

Further, the floating body is a cube, a sphere or a cylinder.

Further, one end of the negative pressure discharge pipe penetrates into the track cabin, and the nozzle of the end is a horn-shaped suction port; the other end of the negative pressure discharge pipe penetrates out of the liquid storage container for discharging liquid.

Further, the height of the cabin is 1/3~2/3 of the height of the orbital cabin.

By adopting the above structure, a strong single discharge amount can be obtained. The single discharge volume refers to the liquid volume between the min liquid level and the max liquid level in one cycle from the closure to the opening of the suction port.

Compared with the prior art, the utility model has the following beneficial effects:

1. In the present invention, the floating body is placed in the cabin, and the cabin is connected with the plug through a connecting rod to improve the blocking effect.

2. One end of the negative pressure discharge pipe of the present utility model penetrates into the orbital cabin that is located in the liquid storage container and is provided with the water passage of the orbital cabin, and the nozzle of the end is a trumpet-shaped suction port, and the other end passes through the liquid storage container; Inside the cabin with water passage holes; the bottom plate at the bottom of the cabin is connected to the plug by connecting rods; the whole connected by the cabin and the plug is located in the cavity of the track cabin of the track cabin; using this pure mechanical structure, the use of buoyancy to achieve Automatic opening and closing, neither electric energy nor negative pressure air source is needed during the opening and closing process, with long service life and low failure rate, which solves the industry problem of high failure rate of vacuum interface valves in traditional outdoor negative pressure drainage systems.

3. The height of the cabin is 1/3~2/3 of the height of the orbital cabin, which enhances the single discharge volume.

4. By adopting a cabin structure composed of a limit frame composed of three vertical limit rods and a triangular limit frame on the top, the floating body is prevented from moving left and right from the limit of the limit frame, and the limit frame is vertically upward to the floating body. It also has a limit function.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a schematic diagram of the connection between the track cabin and the cabin body of the utility model.

Figure 3 is a schematic diagram of the utility model square floating body.

FIG. 4 is a schematic diagram of the circular floating body of the present invention.

FIG. 5 is a schematic structural diagram of a limit frame according to Embodiment 3 of the present invention.

FIG. 6 is a schematic diagram of the min liquid level working condition of the utility model.

FIG. 7 is a schematic diagram of the cen liquid level working condition of the utility model.

FIG. 8 is a schematic diagram of the max liquid level working condition of the utility model.

FIG. 9 is a schematic diagram of the opening of the suction port of the present invention.

In the figure, 1. track cabin, 2. cabin, 3. suction port, 201. water hole, 202. bottom plate, 203. connecting rod, 204. plug, 205. floating body, 4. negative pressure discharge pipe, 5. Liquid storage container, 6. Water inlet, 7.min liquid level, 8.cen liquid level, 9.max liquid level, 10. Vertical limit rod, 11. Limit frame.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Example 1

As shown in FIG. 1 , an automatic opening and closing negative pressure pipeline opening and closing device includes a plug 204 for blocking the suction port 3 , a cabin body 2 , and a floating body 205 . One end of the negative pressure discharge pipe 4 penetrates into the track cabin 1 , and the mouth of this end is a horn-shaped suction port 3 ; the other end of the negative pressure discharge pipe 4 penetrates out of the liquid storage container 5 . The floating body 205 is arranged in the cabin body 2 , and the cabin body 2 is provided with a water passage hole 201 ; the track cabin 1 is located in the liquid storage container 5 . The liquid storage container 5 is provided with a water inlet 6 . The track cabin 1 is provided with a track cabin water hole 101 . A bottom plate 202 is provided at the bottom of the cabin body 2 , and the bottom plate 202 is connected to the plug 204 through a connecting rod 203 . The floating body 205 is placed in the cabin body 2, and the cabin body 2 is connected with the plug 204 through the connecting rod 203 to improve the blocking effect. The entirety of the cabin body 2 connected with the plug 204 is located in the cavity 102 in the orbital cabin of the orbital cabin 1 . The high liquid level suction port 3 is instantly opened, and the low liquid level suction port 3 is instantly closed, and neither electric energy nor negative pressure air source is required to be consumed during the opening and closing process. By designing different cabin heights, different discharge water volumes can be obtained. Through the design of buoyancy and self-weight, the height difference between the open liquid level of the suction port 3 and the closed liquid level of the suction port 3 can be controlled, thereby controlling the suction volume of the suction port 3 once opened and closed.

The height of the cabin 2 is 1/3~2/3 of the height of the orbital cabin 1, and this structure can obtain a strong single discharge. The single discharge volume refers to the liquid volume between the min liquid level 7 and the max liquid level 9 in one cycle from the closure to the opening of the suction port.

As shown in FIG. 2 , the inner wall of the track cabin 1 is connected to the outer wall of the cabin body 2 .

As shown in FIG. 3 , the floating body 205 is a cube.

Embodiment 2 is the same as Embodiment 1, except that the floating body 205 is a sphere, as shown in FIG. 4 .

Example 3 is the same as Example 1. The difference is that the floating body 205 is a column body; the cabin body 2 is composed of a limit frame composed of three vertical limit rods 10 and a triangular limit frame 11 at the top, as shown in FIG. 5 . The limit frame material is plastic or stainless steel. The limit frame is used to effectively prevent the floating body 205 from moving left and right, that is, the floating body 205 cannot move left and right without being detached from the limit of the limit frame, and the limit frame also has a limit function for the floating body 205 in the vertical direction.

The working process is shown in Figure 6-9.

As shown in FIG. 6 , the floating body 205 is located at the inner bottom of the cabin body 2 , which is the min liquid level 7 at this time. The plug 204 blocks the suction port 3 . When the plug 204 blocks the suction port 3, the pressure range at the suction port 3 is -0.005~-0.095Mpa. At this time, the buoyancy of cabin 2 is as follows:

(Self-weight of cabin 2 + self-weight of floating body 205 + negative pressure suction of suction port 3) > buoyancy of cabin 2.

As shown in FIG. 7 , the floating body 205 is located in the middle of the cabin 2 , which is the cen liquid level 8 at this time. The cen liquid level 8 is the fluctuating liquid level, and the interval is the min liquid level 7-max liquid level 9. Within the range of cen liquid level 8, the floating body 205 floats in the cabin body 2, and there is no force between the floating body 205 and the cabin body 2. Within the range of cen liquid level 8, the plug 204 blocks the suction port 3, and the floating body 205 rises as the liquid level rises. At this time, the buoyancy of cabin 2 is as follows:

(self-weight of cabin 2 + negative pressure suction of suction port 3) > buoyancy of cabin 2.

As shown in FIG. 8 , the floating body 205 is located at the top of the cabin 2 , which is the max liquid level at this time. The liquid level rises from the cen liquid level 8 to the max liquid level 9, the plug 204 blocks the suction port 3, and the suction port 3 is in a critical opening state. When the liquid level is higher than the max liquid level 9, the suction port 3 will open. The liquid level rises from the cen liquid level 8 to the max liquid level 9, and the floating body 205 exerts an upward force F on the top plate of the cabin body 2 . At this time, the size of F is as follows:

F=buoyancy of floating body 205 - self-weight of floating body 205.

When the liquid level is at the max level of 9, the suction port 3 is in a critical open state, and the buoyancy relationship is as follows:

The buoyancy of the floating body 205 - the weight of the floating body 205 ≈ the negative pressure suction force of the suction port 3 + the self-weight of the cabin body 2 - the buoyancy of the cabin body 2.

As shown in Figure 9, the suction port is opened, and the liquid level is higher than the max liquid level 9, which is critical. The buoyancy of the cabin body 2 overcomes the self-weight of the cabin body and the suction force of the suction port 3, and the suction port 3 is opened. After the cabin body 2 floats up, the fluid in the cabin body 2 is discharged through the water passage hole 201 and is completely discharged. After the cabin body 2 floats up, the cabin body 2 floats on the liquid surface, and the water passage hole 201 is not submerged. After the suction port 3 is opened, the fluid is discharged along the negative pressure discharge pipe 4 under the action of the negative pressure suction force. After the suction port 3 is opened, as the fluid is discharged, the liquid level gradually decreases until the plug 204 blocks the suction port 3 again.

The examples of this specific embodiment are the preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore: all equivalent changes made according to the structure, shape and principle of the present utility model should be Covered within the scope of protection of the present invention.

Claims (7)

1. The utility model provides an automatic open and close negative pressure pipeline device that opens and shuts, is including end cap (204) that are used for shutoff suction inlet (3), the cabin body (2), body (205), its characterized in that: the floating body (205) is arranged in the cabin body (2), and the track cabin (1) is positioned in the liquid storage container (5); the inner wall of the track cabin (1) is internally connected with the outer wall of the cabin body (2); a bottom plate (202) is arranged at the bottom of the cabin body (2), and the bottom plate (202) is connected with a plug (204) through a connecting rod (203); the whole body formed by connecting the cabin body (2) and the plug (204) is positioned in the track cabin inner cavity (102) of the track cabin (1).

2. The automatic opening and closing negative pressure pipeline opening and closing device according to claim 1, characterized in that: the cabin body (2) is a box body, and water through holes (201) are formed in the box body.

3. The automatic opening and closing negative pressure pipeline opening and closing device according to claim 1, characterized in that: and the track cabin (1) is provided with a track cabin water through hole (101).

4. The automatic opening and closing negative pressure pipeline opening and closing device according to claim 1, characterized in that: the cabin body (2) is composed of a limiting frame consisting of a vertical limiting rod (10) and a limiting frame (11) at the top.

5. The automatic opening and closing negative pressure pipeline opening and closing device according to claim 1, characterized in that: the floating body (205) is a cube, a sphere or a cylinder.

6. The automatic opening and closing negative pressure pipeline opening and closing device according to claim 1, characterized in that: one end of the negative pressure discharge pipe (4) penetrates through the track cabin (1), and the pipe orifice of the end is a trumpet-shaped suction port (3); the other end of the negative pressure discharge pipe (4) penetrates through the liquid storage container (5).

7. The automatic opening and closing negative pressure pipeline opening and closing device according to claim 2, characterized in that: the height of the cabin body (2) is 1/3-2/3 of the height of the track cabin (1).

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