Negative pressure valve of negative pressure drainage system

Abstract

The utility model discloses a negative pressure valve of a negative pressure drainage system, which comprises a tubular valve body used for being installed in a drainage pipeline of the negative pressure drainage system, the whole tubular valve body is made of an elastic plastic material, two ends of the tubular valve body are provided with a first through hole and a second through hole, the tubular valve body is divided into an upper side wall and a lower side wall, the upper side wall and the lower side wall are each composed of a first inclined plane part connected with the first through opening and a second inclined plane part connected with the second through opening, a turning part is formed in the connecting position of the first inclined plane part and the second inclined plane part, and a valve port is formed between the turning part of the upper side wall and the turning part of the lower side wall. When the interior of the drainage pipeline is closed and negative pressure is formed, the valve port is closed, and when air is introduced into the drainage pipeline to remove sealing, the valve port is opened. The valve is low in cost and suitable for being widely applied to occasions with more drainage points, the opening and closing of the valve are controlled by utilizing the sealing performance of the drainage pipe, and remote control is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to negative pressure drainage system technical field, concretely is a negative pressure valve of negative pressure drainage system. BACKGROUND

[0002] The negative pressure drainage system is a kind of drainage device using the negative pressure generated in drain pipe to pump out the water at one end of drain pipe to the other end, the switch of existing negative pressure drainage system is all controlled by traditional valve, traditional mechanical valve is manually opened by artificial or needs to install motor control device, the cost is relatively big, for the rural area and other occasions with more drainage points, it is not suitable for large-scale installation of traditional mechanical valve, so a kind of valve with low cost and suitable for automatic control is needed. SUMMARY

[0003] The utility model provides a kind of negative pressure valve of negative pressure drainage system, low cost, it is suitable for wide range application in the occasion with more drainage points, the sealing of drain pipe is used to control the opening and closing of valve, without remote control.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of negative pressure valve of negative pressure drainage system, including tubular valve body, for being installed in the drain pipeline of negative pressure drainage system, the tubular valve body is integrally made of elastic plastic material, its both ends have first through hole and second through hole, the tubular valve body is divided into upper side wall and lower side wall, the upper side wall and lower side wall are all composed of first inclined surface portion connected with first through hole and second inclined surface portion connected with second through hole, the junction of first inclined surface portion and second inclined surface portion forms turning portion, the turning portion between the upper side wall and lower side wall forms valve port, when drain pipeline is internally sealed and forms negative pressure, valve port is closed, when air is introduced into drain pipeline and unseals, valve port is opened, elastic plastic material has certain elasticity, under negative pressure, the upper side wall and lower side wall formed by first inclined surface portion and second inclined surface portion can contract inwards and close valve port, after unsealing negative pressure, the upper side wall and lower side wall are deformed under the action of material self elasticity, so that valve port is opened, so only the sealing of drain pipeline can be controlled.

[0005] As preferred, the outer side wall of the second inclined surface portion is transversely provided with a plurality of reinforcing ribs, so that the valve port can be kept closed under negative pressure and not easily opened by water flow.

[0006] As preferred, adjacent reinforcing ribs are connected by connecting bosses, so as to further improve the thickness and strength of the second inclined surface portion.

[0007] As preferred, U-shaped reinforcing ribs wrapping the two ends of the turning part are arranged between the upper side wall and the lower side wall at the two ends of the turning part, so that the two ends of the valve port can be reinforced and will not be greatly deformed even in a non-sealing environment.

[0008] As preferred, mounting flanges are arranged at the two ends of the tubular valve body and are in contact with the inner side wall of the drain pipe.

[0009] As preferred, a hemmed reinforcing rib is arranged at the connection between the two sides of the upper side wall and the lower side wall to prevent aging and cracking at this position.

[0010] As preferred, a communication hole is arranged on the side wall of the drain pipe close to the tubular valve body to facilitate the control of the internal sealing of the drain pipe.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The tubular valve body is made of elastic plastic material and has certain elasticity, and the upper side wall and the lower side wall composed of the first inclined surface part and the second inclined surface part can be contracted inward to close the valve port in a negative pressure state, and the upper side wall and the lower side wall are deformed under the elastic force of the material itself after the negative pressure is released, so that the valve port is opened, and therefore only the sealing of the drain pipe needs to be controlled, the cost is low, and the utility model can be applied to occasions with more drainage points on a large scale. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the utility model;

[0014] Figure 2 is a perspective view of the utility model;

[0015] Figure 3 is a front view of the utility model;

[0016] Figure 4 is a sectional view of the utility model in an installed state. BRIEF DESCRIPTION OF DRAWINGS:

[0018] 1, tubular valve body, 11, connecting boss, 12, communication hole, 13, drain pipe, 14, mounting flange, 2, first port, 3, first inclined surface part, 4, second port, 5, second inclined surface part, 6, valve port, 7, reinforcing rib, 8, U-shaped reinforcing rib, 9, reinforcing rib. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1-4 As shown, the utility model provides a negative pressure valve of a negative pressure drainage system, including a tubular valve body 1, which is used to be installed in a drainage pipe 13 of the negative pressure drainage system. The tubular valve body 1 is made of an elastic plastic material as a whole, and has a first opening 2 and a second opening 4 at both ends. The tubular valve body 1 is divided into an upper side wall and a lower side wall. The upper side wall and the lower side wall are both composed of a first inclined portion 3 connected to the first opening 2 and a second inclined portion 5 connected to the second opening 4. The connection between the first inclined portion 3 and the second inclined portion 5 forms a turning portion. A valve port 6 is formed between the turning portion of the upper side wall and the lower side wall. When the interior of the drainage pipe 13 is sealed and negative pressure is formed, the valve port 6 is closed. When air is introduced into the drainage pipe 13 to release the seal, the valve port 6 opens. The elastic plastic material has a certain elasticity. Under negative pressure, the upper side wall and the lower side wall composed of the first inclined portion 3 and the second inclined portion 5 can shrink inward to close the valve port 6. After the negative pressure is released, the upper side wall and the lower side wall are deformed under the action of the material's own elasticity, causing the valve port 6 to open. Therefore, it is only necessary to control the sealing inside the drainage pipe 13.

[0021] Specifically, the tubular valve body 1 can be made of rubber material as a whole, or only the upper side wall and the lower side wall can be made of rubber material. The negative pressure in the drainage pipe 13 can be generated by a vacuum tank, and when the drainage pipe 13 is not working, the negative pressure in the drainage pipe 13 can be maintained without consuming energy. If the valve port 6 needs to be opened, a small vent hole can be provided on the side wall of the drainage pipe 13, such as Figure 4 As shown, a connecting hole 12 can be provided on the side wall of the drainage pipe 13 near the tubular valve body 1 to facilitate the control of the internal sealing of the drainage pipe 13. The connecting hole 12 can be externally connected to a small switch, such as a liquid level switch, a temperature switch, etc. When the water level in the drainage pool rises to a certain height, the liquid level switch can open the connecting hole 12 to release the negative pressure in the drainage pipe 13, so that the valve port 6 can be opened, and the water in the drainage pipe 13 can flow through the valve port 6 and be discharged.

[0022] In this embodiment, if Figures 1-2 As shown, a number of reinforcing ribs 7 are laterally arranged on the outer side wall of the second inclined portion 5, so that the valve port 6 can remain closed under negative pressure and will not be easily opened by the impact of water flow. The valve port 6 needs to be opened to a certain degree when in a non-sealed space, but this opening cannot be too large, so the reinforcing ribs 7 play a role in preventing the second inclined portion 5 from undergoing relatively large deformation.

[0023] The inclination of the first inclined surface 3 and the second inclined surface 5 can be the same or different, as shown in Figures 1-4 The inclination of the second inclined surface 5 is greater than that of the first inclined surface 3, and the orientation of the second inclined surface 5 is towards the direction of water extraction during installation.

[0024] In the embodiment, as shown in Figure 2 The second inclined surface 5 is connected between adjacent reinforcing ribs 7 through connecting bosses 11, which can further improve the thickness and strength of the second inclined surface 5.

[0025] In the embodiment, as shown in 1-2, U-shaped reinforcing ribs 8 are arranged at both ends of the turning portion between the upper side wall and the lower side wall, which can reinforce the positions of both ends of the valve port 6, so that the both ends of the valve port 6 will not deform greatly even in a non-sealing environment.

[0026] In order to facilitate installation, the tubular valve body 1 is provided with installation flanges 14 at both ends, which are in contact with the inner side wall of the drain pipe 13, and the installation flanges 14 can be directly connected to the pipe, so that the tubular valve body 1 can be used as a connecting pipe.

[0027] In some further embodiments, as shown in Figure 2 The upper side wall and the lower side wall are provided with folded edge reinforcing ribs 9 at both sides of the connecting portion, which can prevent the position from aging and cracking.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0030] In the utility model, unless another definite provision and limitation, the term "connect", "fix" and so on should do the broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0031] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

Claims

1. A negative pressure valve for a negative pressure drainage system, characterized in that: The invention comprises a tubular valve body (1) for being installed in a drainage pipe (13) of a negative pressure drainage system, wherein the tubular valve body (1) is made of an elastic plastic material as a whole, and has a first opening (2) and a second opening (4) at both ends thereof, and the tubular valve body (1) is divided into an upper side wall and a lower side wall, wherein the upper side wall and the lower side wall are both composed of a first inclined portion (3) connected to the first opening (2) and a second inclined portion (5) connected to the second opening (4), and a turning portion is formed at the connection between the first inclined portion (3) and the second inclined portion (5), and a valve port (6) is formed between the turning portions of the upper side wall and the lower side wall. When the interior of the drainage pipe (13) is sealed and negative pressure is formed, the valve port (6) is closed, and when air is introduced into the drainage pipe (13) to release the seal, the valve port (6) is opened.

2. The negative pressure valve of the negative pressure drainage system according to claim 1, characterized in that: A plurality of reinforcing ribs (7) are transversely arranged on the outer side wall of the second inclined portion (5).

3. The negative pressure valve of the negative pressure drainage system according to claim 2, characterized in that: Adjacent reinforcing ribs (7) are connected via connecting bosses (11).

4. The negative pressure valve of the negative pressure drainage system according to claim 1, characterized in that: U-shaped reinforcing ribs (8) are provided at both ends of the turning portion between the upper side wall and the lower side wall to wrap the two end portions of the turning portion.

5. The negative pressure valve of the negative pressure drainage system according to claim 1, characterized in that: Both ends of the tubular valve body (1) are provided with mounting flanges (14), and the mounting flanges (14) are in contact with the inner side wall of the drainage pipe (13).

6. The negative pressure valve of the negative pressure drainage system according to claim 1, characterized in that: The connection points on both sides of the upper side wall and the lower side wall are provided with folded edge reinforcement ribs (9).

7. The negative pressure valve of the negative pressure drainage system according to claim 1, characterized in that: A connecting hole (12) is provided on the side wall of the drainage pipe (13) at a position close to the tubular valve body (1).

Images