CN218063407U - Negative pressure angle seat valve for vacuum sewage pipeline - Google Patents

Abstract

The utility model discloses a negative pressure angle seat valve for a vacuum sewage pipeline, which comprises a valve seat, a valve cover and a valve core, wherein a sealing part for separating a water inlet and a water outlet is arranged in the valve seat; the valve cover is arranged on the valve head, a second channel is arranged in the valve cover, and an air pressure interface for controlling the valve core is arranged on the valve cover; the valve core is provided with a blocking head and a valve tail, the valve tail is connected with the inner wall of the second channel in a sliding and sealing mode, the valve tail divides the interior of the valve cover into a control cavity and a normal pressure cavity, and the air pressure interface is communicated with the control cavity. The beneficial effects of the above technical scheme are: the control cavity is connected with the existing negative pressure equipment in the system to generate negative pressure, so that the resultant force applied to the valve core faces the valve cover to drive the valve core to move towards the valve cover to open the opening. Is more suitable for the field of vacuum sewage systems.

Description

Negative pressure angle seat valve for vacuum sewage pipeline

Technical Field

The utility model relates to the technical field of valves, concretely relates to negative pressure angle seat valve for vacuum sewage pipeline.

Background

Interface valve that waste water field commonly used is collected in vacuum mainly includes disk seat, valve gap and diaphragm, like the open-type vacuum diaphragm valve that CN204533640U disclosed, including the disk seat, be equipped with the opening on the disk seat side, be equipped with on the opening with opening complex leather cup, lie in on the disk seat that the leather cup is equipped with the overcoat outward, overcoat extrusion leather cup is peripheral, the space name that forms between leather cup and the overcoat is the die cavity, is equipped with the spring in the die cavity, spring upper end and overcoat are connected, the spring lower extreme is equipped with first briquetting. The sealing surface formed by the negative pressure of the pipeline between the diaphragm and the base of the interface valve in the structure is greatly influenced by the material quality, the forming and the negative pressure of the diaphragm and the base, so that the sealing performance is unstable and the air leakage is easy to occur; in addition, in the interface valve with the structure, the sewage flow cross section is influenced by the diaphragm shrinkage forming shape, and the diaphragm shrinkage forming is not controllable, so that the final flow cross section of the interface valve is not controllable. The conventional pneumatic angle seat valve has good sealing performance, large flow cross section and stable performance, but the acting medium is liquid, steam and other fluids without solid impurities, only compressed air or neutral gas can be used as power, and the pneumatic angle seat valve is not suitable for the field of vacuum collection of waste water and sewage.

In view of this, developing a kind of angle seat valve that is applied to the field of vacuum collection of waste water and has the performance of the conventional pneumatic angle seat valve becomes a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a negative pressure angle seat valve for vacuum sewage pipeline, the stable performance is reliable, not only adopts the vacuum as power, and the effect medium can be the waste water that contains solid impurity moreover.

The utility model provides a technical scheme be: a negative pressure angle seat valve for a vacuum sewage pipeline comprises a valve seat, a valve cover and a valve core, wherein a water inlet, a water outlet and a valve head which are communicated with each other are arranged on the valve seat; the valve cover is arranged on the valve head, a second channel communicated with the first channel is arranged in the valve cover, the diameter of the second channel is larger than that of the first channel, a valve core for plugging the opening is arranged in the first channel and the second channel in a sliding mode, an air pressure interface for controlling the valve core is arranged on the valve cover, and a spring connected with the valve core is further arranged in the valve cover; the first end of the valve core is provided with a blocking head, the blocking head faces the opening, the second end of the valve core is provided with a valve tail, the edge of the valve tail is connected with the inner wall of the second channel in a sliding and sealing mode, the valve tail divides the interior of the valve cover into a control cavity and a normal pressure cavity, and the air pressure interface is communicated with the control cavity.

The beneficial effects of the above technical scheme are: negative pressure equipment that has been provided with in can connecting vacuum sewage system through the atmospheric pressure interface for produce the negative pressure in the control chamber, make the resultant force that the case received towards the valve gap, and then drive the valve core and remove towards the valve gap and open the opening, make water inlet and delivery port intercommunication. Is more suitable for the field of vacuum sewage systems.

Furthermore, a cavity is arranged in the valve core, an opening is formed in one end, facing the valve tail, of the valve core, the first end of the spring extends into the cavity from the opening and is fixed in the cavity, and the second end of the spring is fixed at the top of the valve cover. The arranged spring can assist the valve core to reset, specifically, the valve core is pushed away from the valve cover, so that the angle seat valve can keep a normally closed state.

Further, a central rod is arranged in the cavity and located inside the spring, and the spring is a pressure spring. The pressure spring is compressed when the valve core is opened, and when the valve core needs to be closed, normal pressure air is introduced into the control cavity, so that the compressed spring can reset, and the valve core is driven to block the opening.

Further, a magnet is arranged at one end, facing the valve tail, of the center rod, and a magnetic reed switch sensor matched with the magnet is arranged at the center of the outer side of the top of the valve cover. The cooperation of magnet and magnetic reed switch sensor can judge the open and close state of case.

Further, the valve tail is a flange extending radially outward from the valve core. The diameter of the valve tail is larger than that of the valve core by the aid of the arranged flange, and further larger than that of the plugging head.

Furthermore, the end face of the valve cover is connected with the top face of the valve head, and the end face of the valve cover is also provided with a groove for communicating the atmosphere with the atmospheric pressure cavity. Through being communicated with the atmosphere, the valve core can be driven by the negative pressure generated in the control cavity.

Furthermore, the blocking head is made of rubber materials, one end of the blocking head, facing the opening, is in a round table shape, and a bolt penetrates through the middle of the blocking head to be fixedly connected with the valve core. The sealing plug in the shape of the circular truncated cone can improve the reliability of sealing of the sealing plug and the opening.

Further, the outside of disk seat still is provided with the tonifying qi and connects, tonifying qi connects with the water inlet intercommunication. The air supplementing joint is used for sucking air, so that air and sewage entering from the water inlet form a gas-liquid two-phase mixture, the smoothness of pollution discharge is further ensured, and blockage is avoided.

Further, the valve head and the valve seat are arranged at a preset angle, and the plane of the sealing part is perpendicular to the central axis of the valve seat.

Further, the valve cover is connected with the valve head through a flange plate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a cross-sectional view of an embodiment of the present invention in a closed state;

fig. 3 is a cross-sectional view of the embodiment of the present invention in an open state.

Reference numerals: the valve comprises a valve seat 1, a water outlet 101, a water inlet 102, a valve head 103, a gas supplementing joint 104, a sealing part 105, an opening 106, a bolt 2, a sealing head 3, a valve core 4, a central rod 401, a valve tail 402, an oil seal 5, an O-shaped sealing ring 6, a valve cover 7, a gas pressure interface 701, a fixed blind hole 702, a control cavity 703, a normal pressure cavity 704, a groove 705, a magnetic spring switch sensor 8, a pressure spring 9, a magnet 10 and a pressure plate 11.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1 to 3, the present embodiment provides a negative pressure angle seat valve for a vacuum sewer piping, which is connected between a hoist and a negative pressure tank, negative pressure of which is supplied from a negative pressure pump, and sewage in the hoist is sucked into the negative pressure tank after the negative pressure angle seat valve is opened. The negative pressure angle seat valve comprises a valve seat 1, a valve cover 7 and a valve core 4, wherein the valve seat 1 is provided with a water inlet 102, a water outlet 101 and a valve head 103 which are communicated with each other, the water inlet 102 is connected with a lifter, the water outlet 101 is connected with a negative pressure tank, a sealing part 105 for separating the water inlet 102 and the water outlet 101 is arranged in the valve seat 1, an opening 106 is arranged on the sealing part 105, and a first channel leading to the opening 106 is arranged in the valve head 103; the valve cover 7 is arranged on the valve head 103, a second channel communicated with the first channel is arranged in the valve cover 7, the diameter of the second channel is larger than that of the first channel, the valve core 4 for plugging the opening 106 is arranged in the first channel and the second channel in a sliding mode, an air pressure interface 701 for controlling the valve core 4 is arranged on the valve cover 7, and the air pressure interface 701 is connected with a negative pressure pump through a three-way valve. When sewage in the lifter needs to be pumped, the three-way valve is opened, the air pressure interface 701 is communicated with the negative pressure pump, and the angle seat valve is opened; when the sewage in the lifter is not pumped, the three-way valve is closed, the air pressure interface 701 is communicated with the atmosphere through the three-way valve, so that the normal pressure cavity and the control cavity are both normal pressure, and the valve core 4 is reset. A spring connected with the valve core 4 is also arranged in the valve cover 7; a blocking head 3 is arranged at a first end of the valve core 4, the blocking head 3 faces the opening 106, a valve tail 402 is arranged at a second end of the valve core 4, and the edge of the valve tail 402 is connected with the inner wall of the second channel in a sliding and sealing manner, that is, the valve tail 402 always slides in the valve cover 7. The valve tail 402 divides the interior of the valve cover 7 into a control chamber 703 and a normal pressure chamber 704, and the air pressure port 701 communicates with the control chamber 703.

When the vacuum valve is used, the air pressure interface 701 can be connected with negative pressure equipment which is arranged in a vacuum sewage discharge system, so that negative pressure is generated in the control cavity 703, the accumulated water possibility exists in a pipeline connected with the water outlet, so that the negative pressure in the control cavity 703 is more than or equal to the negative pressure value in the water outlet, the diameter of the valve tail 402 of the valve core 4 is larger than that of the sealing head 3, the valve core 4 overcomes the elastic force of the spring and the suction force generated by the negative pressure at the position of the sealing head 3, the resultant force received by the valve core 4 faces the valve cover 7, the valve core 4 is driven to move towards the valve cover 7 to open the opening 106, and the water inlet 102 is communicated with the water outlet 101.

The valve head 103 and the valve seat 1 are arranged at a predetermined angle, so that the valve seat 1 is in a Y-shaped tee shape, and the plane of the sealing part 105 is perpendicular to the central axis of the valve seat 1.

The valve core 4 needs to move in the opening and closing process of the negative pressure angle seat valve, and a spring is connected between the valve core 4 and the valve cover 7. For this purpose, a cavity is arranged in the valve core 4 and an opening is arranged at one end facing the valve tail 402, and correspondingly, one end of the valve core 4 far away from the opening is closed. The first end of the spring extends into the cavity from the opening and is fixed in the cavity to tightly abut against the bottom in the valve core 4, and the second end of the spring is fixed at the top of the valve cover 7. The arranged spring can assist the valve core 4 to reset, in particular to push the valve core 4 away from the valve cover 7, so that the angle seat valve can keep a normally closed state.

In order to keep the spring centered on the spool 4 during the displacement of the spool 4, a central rod 401 is arranged in the cavity of the spool 4, said central rod 401 being located inside said spring. The spring may be a compression spring 9. The pressure spring 9 is compressed when the valve core 4 is opened, and when the valve core 4 needs to be closed, normal pressure air is introduced into the control cavity 703, so that the compressed spring can be reset, and the valve core 4 is driven to block the opening 106. After the valve core 4 is closed, the valve core 4 is subjected to the resultant force of attraction force generated by negative pressure at the blocking head 3 and the elastic force of the pressure spring 9, so that the valve core 4 can be more effectively and stably in a closed state.

To ensure that the valve tail 402 has a larger diameter than the plugging head 3, the valve tail 402 is preferably a flange extending radially outward from the valve core 4. The flange makes the diameter of valve tail 402 be greater than case 4 itself, and the diameter of shutoff head 3 is unanimous with case 4 main part, and then makes the diameter of valve tail 402 be greater than shutoff head 3. The sealing head 3 is made of rubber materials, one end of the sealing head 3, facing the opening 106, is in a circular truncated cone shape, and a bolt 2 penetrates through the middle of the sealing head 3 to be fixedly connected with the valve core 4. The truncated cone-shaped plugging head 3 can increase the reliability of the sealing of the plugging head 3 and the opening 106.

The end face of the valve cover 7 is connected with the top face of the valve head 103, and the end face of the valve cover 7 is also provided with a groove 705 for communicating the atmosphere with the normal pressure cavity 704. By communicating with the atmosphere, it is ensured that the valve element 4 can be driven by the negative pressure generated in the control chamber 703. In order to ensure the reliability of the connection, the valve cover 7 is connected with the valve head 103 through a flange.

In the negative pressure angle seat valve, in order to have a large pressure resistance, the valve head 103 and the valve cover 7 are both provided with a cylindrical shape on the outside, and the first channel and the second channel are also cylindrical, thereby defining the shape of the valve core 4 to be also cylindrical. When the valve core 4 and the first channel slide, lubrication needs to be ensured, and the valve core and the first channel are isolated from the outside, so that an oil seal 5 is arranged in the first channel of the valve head 103 at a position corresponding to the top, and the oil seal 5 is fixed through a pressure plate 11. Further, since the control chamber 703 and the normal pressure chamber 704 need to be sealed, an O-ring 6 is provided on the outer surface of the flange.

In the whole sewage system, a plurality of lifters and a plurality of negative pressure angle seat valves are arranged. The state of these angle seat valves needs to be grasped by the operator, and if the angle seat valves are observed manually, a great deal of manpower and time are wasted. For raising the efficiency well core rod 401 is provided with magnet 10 towards the one end of valve tail 402, well core rod 401 is the cavity pole, and the tail end of cavity pole is porose, magnet 10 with the hole interference fit of well core rod 401 afterbody, the center in the top outside of valve gap 7 be provided with magnet 10 assorted magnetic reed switch sensor 8, specifically, be provided with fixed blind hole 702 at the top center of valve gap 7, magnetic reed switch sensor 8 and fixed blind hole 702 interference fit. The cooperation of the magnet 10 and the reed switch sensor 8 can determine the open/close state of the valve element 4. The judgment principle is as follows: when the magnet 10 moves to a position closest to the reed switch sensor 8, the reed switch sensor 8 is in a passage state due to the magnetic force of the magnet 10, and a passage signal is transmitted to the control system, so that the negative pressure angle seat valve is judged to be in an opening state. When the valve core 4 is in the closed state, the magnet 10 is carried away by the valve core 4 away from the top of the valve cover 7 and the reed switch sensor 8. At the moment, the magnetic reed switch sensor 8 is in an open circuit state, and an open circuit signal is also transmitted to the control system, so that the negative pressure angle seat valve is judged to be in a closed state.

The sewage inevitably contains part of solid substances, such as grease and sundries, which can be attached to the sewage discharge pipe to cause blockage. In order to ensure the smooth sewage draining process, an air replenishing connector 104 is further arranged outside the valve seat 1, and the air replenishing connector 104 is communicated with the water inlet 102. The air supply joint 104 is used for sucking air, so that the air and sewage entering from the water inlet 102 form a gas-liquid two-phase mixture, the possibility that solid substances are attached and deposited on the sewage discharge pipe is reduced, the smoothness of sewage discharge is further ensured, and blockage is avoided. In addition, the air supply joint 104 can also improve the suction lift of the system under the same negative pressure of the system.

The working state of the negative pressure angle seat valve comprises opening and closing, and the principle is as follows:

when the vacuum sewage pipeline is opened, the three-way valve between the air pressure connector 701 and the vacuum pump is opened, negative pressure is generated in the control cavity 703, the valve core 4 moves towards the top of the valve cover 7, the sealing head 3 moves into the first channel of the valve head 103, the water inlet 102 and the water outlet 101 are communicated, sewage in the lifter is sucked under the action of the negative pressure in the vacuum sewage pipeline, and meanwhile, air is sucked together through the air supplementing connector 104.

When the valve is closed, normal pressure air is introduced through the air pressure interface 701, so that the control cavity 703 is in a normal pressure state, the valve element 4 assembly moves towards the sealing part 105 under the action of the elastic force of the pressure spring 9, and finally the sealing head 3 blocks the opening 106; the sealing plug 3 and the valve seat 1 form a sealing surface under the resultant force of elasticity and negative pressure in the pipeline, and the water inlet 102 and the water outlet 101 are in circuit break.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of description only and is not intended to be interpreted as indicating or implying relative importance or to imply that the number of technical features indicated is significant. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (10)

1. A negative pressure angle seat valve for a vacuum sewer piping, comprising:

the valve seat (1) is provided with a water inlet (102), a water outlet (101) and a valve head (103) which are communicated with each other, a sealing part (105) for separating the water inlet (102) and the water outlet (101) is arranged in the valve seat (1), an opening (106) is arranged on the sealing part (105), and a first channel leading to the opening (106) is arranged in the valve head (103);

the valve cover (7) is arranged on the valve head (103), a second channel communicated with the first channel is arranged in the valve cover (7), the diameter of the second channel is larger than that of the first channel, a valve core (4) for plugging the opening (106) is arranged in the first channel and the second channel in a sliding manner, an air pressure interface (701) for controlling the valve core (4) is arranged on the valve cover (7), and a spring connected with the valve core (4) is also arranged in the valve cover (7); and the number of the first and second groups,

the valve comprises a valve core (4), a blocking head (3) is arranged at the first end of the valve core (4), the blocking head (3) faces the opening (106), a valve tail (402) is arranged at the second end of the valve core (4), the edge of the valve tail (402) is connected with the inner wall of the second channel in a sliding and sealing mode, the valve tail (402) divides the interior of the valve cover (7) into a control cavity (703) and a normal pressure cavity (704), and an air pressure interface (701) is communicated with the control cavity (703).

2. The negative pressure angle seat valve for vacuum sewer piping according to claim 1, characterized in that there is a cavity in the valve core (4) and an opening at the end towards the valve tail (402), from which opening the first end of the spring protrudes and is fixed in the cavity, and the second end of the spring is fixed on top of the valve cover (7).

3. Negative pressure angle seat valve for vacuum sewer piping according to claim 2, characterized in that a central rod (401) is arranged in the cavity, said central rod (401) being located inside said spring, said spring being a compression spring (9).

4. A negative pressure angle seat valve for vacuum sewer piping, according to claim 3, characterized in that the end of the central rod (401) facing the valve tail (402) is provided with a magnet (10), and the center of the top outer side of the valve cover (7) is provided with a magnetic reed switch sensor (8) matching with the magnet (10).

5. Negative pressure angle seat valve for vacuum sewer piping according to claim 1, characterized in that the valve tail (402) is a flange, which extends radially outwards from the valve core (4).

6. A negative pressure angle seat valve for vacuum sewer piping according to any of claims 1-4, characterized in that the end surface of the valve cover (7) is joined with the top surface of the valve head (103), and the end surface of the valve cover (7) is further provided with a groove (705) communicating atmospheric and non-atmospheric chambers (704).

7. The negative pressure angle seat valve for vacuum sewer pipes of any of claims 1-4, characterized in that the plugging head (3) is made of rubber material, one end of the plugging head (3) facing the opening (106) is in a truncated cone shape, and a bolt (2) is inserted into the middle of the plugging head (3) to be fixedly connected with the valve core (4).

8. Negative pressure angle seat valve for vacuum sewer piping according to claim 1, characterized in that an air supplement connection (104) is further provided outside the valve seat (1), said air supplement connection (104) being in communication with the water inlet (102).

9. Negative pressure angle seat valve for vacuum sewer piping according to any of claims 1 to 4, characterized in that the valve head (103) is arranged at a predetermined angle to the valve seat (1) and the plane of the enclosure (105) is perpendicular to the central axis of the valve seat (1).

10. Negative pressure angle seat valve for vacuum sewer piping according to any of claims 1-4, characterized in that the valve cover (7) is connected to the valve head (103) by a flange.

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