CN211550579U - Large-diameter drain valve and excrement collecting system for train provided with same - Google Patents

Abstract

The utility model relates to a large-bore escape valve and install train of this escape valve with just system of gathering, including valve body, valve plate and drive arrangement be provided with the circulation passageway that link up from top to bottom that is used for the medium circulation on the valve body the inside of valve body has the slip chamber, the one end of valve plate with drive arrangement connects, drive arrangement drives the valve plate is in the slip intracavity slides and whole indentation to the afterbody the slip intracavity of circulation passageway one side is opened in order to circulate the passageway, or stretches out forward to the preceding tip of slip chamber is in order to circulate the passageway disconnection the detachable end cover is installed to the one end of valve body. The utility model discloses not only reduce the length of valve plate and valve body, simplified the structure of escape valve, reduced the volume of valve body, made things convenient for the dismouting to maintain moreover.

Description

Large-diameter drain valve and excrement collecting system for train provided with same

Technical Field

The utility model relates to a train is with collection just system, in particular to large-diameter bleeder that uses in collection just system belongs to rail vehicle and makes technical field.

Background

In recent years, domestic high-speed rail cars and the like are all provided with vacuum excrement collecting systems for collecting sewage and wash wastewater of toilet stools, wherein the vacuum excrement collecting system with the largest equipment amount is a transfer type vacuum excrement collecting system. The transfer type vacuum excrement collecting system has the characteristics of low energy consumption, short waiting time for using a plurality of excrement collectors and the like. The transfer type vacuum excrement collecting system also has the defects of too many control parts, more fault points, low cost performance of the system and the like. Meanwhile, the transfer type vacuum excrement collecting system in the prior art transfers the sewage by adopting positive pressure, so that the back-spraying fault can occur when the reliability of the components is reduced, and the use of a sanitary system is seriously influenced.

In order to solve the above problems, patent No. 201822272624.5 discloses a vacuum excrement collecting system for a train, which is characterized in that a transfer box is mounted above a sewage box, the lower part of the transfer box is connected with the sewage box through a large-caliber discharge valve, and a vacuum sewage suction gravity sewage discharge mode is adopted. However, the biggest difficulty of the system is that the large-caliber discharge valve, the slide valve and the butterfly valve which are commonly used at present have the problems of small caliber, high height direction, inconvenient disassembly and the like, and can not be applied to the excrement collecting system which discharges the sewage by depending on gravity.

The patent No. 201420870767.5 discloses a pneumatic slide valve for a vacuum excrement collecting system of a railway vehicle, which comprises a cylinder and a valve body, wherein the cylinder is fixed on one side of the valve body, an inlet and an outlet are arranged on the valve body, the valve body comprises a valve housing and a valve plate, a sliding cavity is arranged in the valve housing between the inlet and the outlet, an opening for communicating the inlet and the outlet is arranged on the valve plate, and the cylinder drives the valve plate to slide in the sliding cavity and further selectively communicate or disconnect the inlet and the outlet. This slide valve structure is fit for being applied to the small-bore valve, if be used for heavy-calibre discharge valve then have bulky occupation space great, difficult maintenance scheduling problem, simultaneously, this slide valve is provided with the sealing washer that seal structure was used for the valve plate static and when sliding between the import of valve plate and last valve casing and the export of lower valve casing respectively, because the valve plate adopts the flat plate structure of uniform thickness, must lead to the fact wearing and tearing to the sealing washer when the side-to-side slip, and then reduced the life of sealing washer, need often change, use cost has also been increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a simple structure, small, the easy heavy-calibre of dismouting discharge valve, provides the train of installing this discharge valve simultaneously and uses an excrement collecting system.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a large-caliber drain valve, includes valve body, valve plate and drive arrangement be provided with the circulation passageway that link up from top to bottom that is used for the medium circulation on the valve body the inside of valve body has the valve pocket, the one end of valve plate with drive arrangement connects, drive arrangement drives the valve plate is in slide and whole indentation to the afterbody in the valve pocket the valve intracavity of circulation passageway one side is in order to open the circulation passageway, or stretch out forward to the preceding tip of valve pocket is in order to break off the circulation passageway the detachable end cover is installed to the one end of valve body.

Further, the valve plate is a wedge-shaped structure with the thickness gradually thickened from front to back.

Further, the lower surface of the valve plate is a plane, the upper surface of the valve plate is an inclined plane, the corresponding lower surface of the valve cavity is a plane, and the upper surface of the valve cavity is an inclined plane.

Further, a rubber layer for sealing with the valve body is mounted on the upper surface of the valve plate.

Further, the valve plate is provided with a mounting groove for accommodating a rubber layer, the upper surface of the rubber layer is positioned on the same plane with the upper surface of the other part of the valve plate after mounting, and the rubber layer is fixed on the valve plate in a vulcanization mode and/or fixed on the valve plate through a mounting structure.

Further, a ring of annular sealing ring is arranged at the contact position of the valve body and the rubber layer along the circumferential direction of the flow channel, and the sealing ring is in contact sealing with the rubber layer in a closed state.

Furthermore, the end cover is provided with a through hole for the driving rod of the driving device to pass through, the inner wall of the through hole of the end cover is provided with an annular sealing groove, and a first O-shaped sealing ring used for sealing with the driving rod is arranged in the sealing groove.

Furthermore, an anti-blocking groove with a downward opening is formed in the valve body positioned at the front end of the valve cavity and communicated with the valve cavity.

Furthermore, a second O-shaped sealing ring used for sealing the connecting interface of the installation equipment is arranged on the inner wall of the inlet of the valve body.

The utility model discloses another technical scheme is:

the train excrement collecting system comprises a transit box and a sewage tank, wherein the large-caliber drain valve is arranged between the transit box and the sewage tank.

In summary, the large-diameter drain valve and the excrement collecting system for the train equipped with the same of the present invention have the following advantages compared with the prior art:

(1) the utility model discloses well valve plate is complete monoblock plate structure, and the one end of whole indentation valve pocket after removing to one side makes the circulation passageway open, and is provided with detachable end cover structure in one side of valve body, has not only reduced the length of valve plate and valve body, has simplified the structure of escape valve, has reduced the volume of valve body, makes things convenient for the dismouting to maintain moreover.

(2) The utility model discloses well valve plate adopts the wedge structure, and only be used for sealed rubber layer in the upper surface setting of valve plate, when the discharge valve closed, only utilize the upper surface of valve plate and last valve body between realize the contact seal, can effectively reduce jamming and wearing and tearing of valve, no matter move forward or backward moreover, because the front end is thin, the rear end is wide, rubber layer on the valve plate can not receive too much wearing and tearing at the removal in-process, under the prerequisite of guaranteeing sealed requirement, can improve the life on rubber layer by a wide margin, and the use cost is reduced.

(3) The utility model discloses correspond on the lower valve body of tip before the valve pocket and be provided with downward open stifled groove of preventing, remove to the front end when closing along with the valve plate, remaining debris in the valve pocket can be pushed away to preceding tip, go into from the opening and prevent stifled inslot and flow, can effectively avoid the valve plate to close not tight, sealed bad problem.

Drawings

FIG. 1 is a schematic view of the structure of the drain valve of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a structural diagram of the excrement collecting system of the present invention.

As shown in fig. 1 to 3, a valve body 1, an upper valve body 1a, a lower valve body 1b, a valve plate 2, a cylinder 3, a flow passage 4, a valve chamber 5, a rubber layer 6, a T-shaped groove 7, a T-shaped projection 8, an anti-blocking groove 9, an end cap 10, a first O-ring 11, a sealing ring 12, a second O-ring 13, a transfer case 14, a dirt case 15, a drain valve 16, a bolt 17, a clamping portion 18, a bolt 19, a sealing gasket 20, a first mounting seat 21, a second mounting seat 22, a bolt 23, and a sealing ring 24.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

the first embodiment is as follows:

as shown in fig. 1, the present embodiment provides a large-diameter drain valve, which includes a valve body 1, a valve plate 2, and a driving device, wherein the valve body 1 has a flow channel 4 for flowing media such as sewage and waste water, the flow channel 4 is vertically through, an inlet is arranged at the upper part, and an outlet is arranged at the lower part. The driving device is fixedly connected with one end of the valve plate 2 and drives the valve plate 2 to move so as to open the flow passage 4 or disconnect the flow passage 4, thereby realizing the opening or closing of the drain valve. The driving device adopts the cylinder 3, and preferably adopts an anti-rotation cylinder to effectively prevent the valve plate 2 from loosening and ensure stable and reliable operation.

As shown in fig. 1 and fig. 3, the valve body 1 is a split structure, and includes an upper valve body 1a and a lower valve body 1b, and the upper valve body 1a and the lower valve body 1b are fixedly connected by a plurality of bolts 17. Inside the valve body 1 there is a valve chamber 5, in which valve chamber 5 the valve plate 2 is mounted and can slide inside the valve chamber 5. The upper valve body 1a and the lower valve body 1b are provided with a step-shaped clamping part 18 which is matched with each other at one end, so that the accurate and in-place installation is ensured. And a sealing ring 24 is also arranged between the upper valve body 1a and the lower valve body 1b and used for realizing the sealing between the upper valve body 1a and the lower valve body 1 b. In this embodiment, the lower valve body 1b is a flat structure, the upper valve body 1a is an inverted U-shaped structure, the two sides of the upper valve body are provided with flanges for fixedly connecting with the lower valve body 1b, and the valve cavity 5 is located in the upper valve body 1 a.

An end cover 10 is installed at the tail end of the valve body 1, the end cover 10 is fixedly connected with the valve body 1 through a plurality of bolts 19, the cylinder 3 is fixed on the outer side of the end cover 10, a cylinder rod with a through hole for penetrating through the cylinder 3 is formed in the end cover 10, the end cover 10 only needs to be detached from one side during maintenance, the valve plate 2 can be pulled out from the valve cavity 5, the valve plate 2 or the cylinder 3 is maintained and replaced, the valve body 1 does not need to be detached, the operation is simple and convenient, a large dismounting space is not occupied, and meanwhile, when the inlet and the outlet are connected with other equipment, the upper valve body 1a and the lower valve body 1b do not need. In order to ensure the tightness of the valve cavity 5, a layer of sealing gasket 20 is arranged between the end cover 10 and the upper valve body 1a and the lower valve body 1 b.

In this embodiment, the valve plate 2 is a complete flat plate structure, the cylinder 3 drives the valve plate 2 to move towards the tail part (located at one side of the cylinder 3) of the valve cavity 5, and the valve plate 2 is completely retracted into the valve cavity 5 at one side of the flow passage 4, so as to open the flow passage 4. The cylinder 3 drives the valve plate 2 to move towards the front part of the valve cavity 5 (the side departing from the cylinder 3), the valve plate 2 extends out, and the front end of the valve plate 2 extends to the front end of the valve cavity 5, so that the circulation channel 4 is disconnected. Adopt this kind to open or confined mode, for the open-ended mode on valve plate 2 among the prior art, can reduce the length of valve plate 2 by a wide margin, under the prerequisite that satisfies the demand of heavy-calibre, can not increase or reduce the total length of valve body 1, reduce the occupation space of valve body 1, also be convenient for routine maintenance and maintenance.

As shown in fig. 1, in this embodiment, the valve plate 2 preferably adopts a wedge-shaped structure, the thickness gradually increases from the front to the tail, the corresponding valve cavity 5 is also in a structure with a narrow front and a wide back, more preferably, the lower surface of the valve plate 2 is a plane, the upper surface is an inclined surface, the lower surface of the corresponding valve cavity 5 (i.e., the upper surface of the lower valve body 1 b) is also a plane, the upper surface of the valve cavity 5 is an inclined surface, when the valve plate 2 slides in the valve cavity 5, the lower surfaces of the valve plate 2 and the valve cavity 5 can be better attached all the time in the sliding process, and thus the smooth sliding of the valve plate 2 in.

As shown in fig. 1 and 2, a rubber layer 6 is mounted on the upper surface of the valve plate 2, the rubber layer 6 is mounted at a position corresponding to a position where the valve plate 2 closes the flow passage 4 and has an area slightly larger than the cross-sectional area of the flow passage 4, and when slid to the open position, the seal between the valve plate 2 and the valve body 1 is formed by the contact between the rubber layer 6 and the upper valve body 1 a. In this embodiment, valve plate 2 adopts the wedge structure, when the discharge valve is closed, only utilize to realize contact seal between the rubber layer 6 on the valve plate 2 upper surface and the last valve body 1a, can effectively reduce jamming and wearing and tearing of valve plate 2, and no matter be forward motion or backward movement, because the front end is thin, the rear end is wide, valve plate 2 only just has the contact when contacting with last valve body 1d, consequently, rubber layer 6 on the valve plate 2 can not receive too much wearing and tearing at the in-process that removes about, under the prerequisite of guaranteeing sealed requirement, can improve the life on rubber layer 6 by a wide margin, and then reduce use cost.

As shown in fig. 2, the valve plate 2 has a mounting groove (shown in the figure) recessed downwards on its upper surface, the mounting groove has the same shape and thickness as the rubber layer 6, the rubber layer 6 is mounted in the mounting groove, and the upper surface of the rubber layer 6 is ensured to be on the same plane with the upper surface of the rest of the valve plate 2 after mounting. The rubber layer 6 can be directly vulcanized on the valve plate 2, and can also be detachably mounted in a mounting groove of the valve plate 2 through a mounting structure, a T-shaped groove 7 is formed in the valve plate 2, a downward convex T-shaped lug 8 is arranged on the lower surface of the rubber layer 6, and the T-shaped lug 8 is mounted in the T-shaped groove 7 by means of a spring, so that the rubber layer 6 can be mounted and fixed. Of course, the vulcanization mode and the installation structure of the T-shaped groove 7 and the T-shaped lug 8 can also be used together, so that the rubber layer 6 is fixed more firmly.

The rubber layer 6 is made of nitrile rubber, and in order to avoid abrasion during forward movement, a round corner is arranged at the foremost end of the rubber layer 6. Valve plate 2 adopts the metal material, guarantees its overall structure intensity, has plated PTFE on the metal material surface, and the wearing and tearing are prevented, and wear-resisting treatment is carried out on the surface, makes valve plate 2 satisfy anticorrosive requirement and can satisfy durability operation requirement again. The valve plate 2 may also be made of engineering plastic such as PTFE.

As shown in fig. 1, in this embodiment, an anti-blocking groove 9 that is open downward is formed in the lower valve body 1b located at the front end of the valve cavity 5, the anti-blocking groove 9 is communicated with the valve cavity 5, and as the valve plate 2 moves toward the front end when closed, the residual impurities in the valve cavity 5 are pushed to the front end and flow out of the anti-blocking groove 9, thereby effectively avoiding the problems of poor sealing caused by the untight closing of the valve plate 2.

As shown in fig. 1, a first O-ring 11 is installed between the rod of the cylinder 3 and the end cover 10, an annular sealing groove is provided on the inner wall of the through hole of the end cover 10, and the first O-ring 11 is embedded in the sealing groove. A strong scraper (not shown) may be further provided on the cylinder 3 or the end cap 10 to remove contaminants attached to the piston rod of the cylinder 3, thereby securing the life of the cylinder 3.

A position switch (not shown) is further installed on the cylinder 3 for detecting an opening or closing signal of the valve body 1. If the valve plate 2 is not in place, the controller carries out system fault warning after collecting the signal of the position switch, and timely reminds workers on the vehicle to overhaul, so that the working stability and reliability of the excrement collecting system are ensured.

As shown in figure 1, a circle of sealing ring 12 is arranged at the bottom of the inlet of the upper valve body 1a, when the valve body is in a closed state, the sealing ring 12 is in contact with the rubber layer 6, a linear sealing structure is additionally arranged between the upper valve body 1a and the valve plate 2, and the sealing performance between the upper valve body 1a and the valve plate 2 is further ensured.

The inner wall of the inlet of the upper valve body 1a is provided with a second O-shaped sealing ring 13, the outlet of the transit box connected with the inlet is directly inserted into the inlet for installation, and the second O-shaped sealing ring 13 is utilized to realize sealing, so that the installation is convenient, and the height space required by installation can be effectively reduced.

Example two:

as shown in fig. 3, the present embodiment provides a train excrement collecting system, which includes a transit tank 14 and a waste tank 15, wherein a large-diameter drain valve 16 is installed between the transit tank 141 and the waste tank 15, and the drain valve 16 is the large-diameter drain valve provided in the first embodiment. The inlet of the valve body 1 is fixedly connected with the sewage outlet of the transfer box 11, and the outlet is fixedly connected with the sewage inlet of the sewage box 12.

Two first installation seats 21 are symmetrically welded at the bottom of the transfer box 14, two second installation seats 22 are symmetrically welded on a top plate of the sewage tank 15, the corresponding first installation seats 21 and the corresponding second installation seats 22 are fixedly connected through bolts 23, the transfer box 14 is further fixed with the sewage tank 15, and the installation height of the first installation seats 21 and the second installation seats 22 after installation is matched with the installation scheduling of the large-caliber drainage valve.

Similar solutions can be derived from the solution given in the figures, as described above. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention are still within the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a large-diameter bleeder valve, includes valve body, valve plate and drive arrangement be provided with the circulation passageway that link up from top to bottom that is used for the medium circulation on the valve body the inside of valve body has the valve pocket, the one end of valve plate with drive arrangement connects its characterized in that: the driving device drives the valve plate to slide towards the tail in the valve cavity and to be completely retracted into the valve cavity on one side of the flow passage so as to open the flow passage, or the valve plate extends forwards to the front end part of the valve cavity so as to disconnect the flow passage, and a detachable end cover is installed at one end of the valve body.

2. A large bore drain valve according to claim 1, wherein: the valve plate is a wedge-shaped structure with the thickness gradually thickened from front to back.

3. A large bore drain valve according to claim 2, wherein: the lower surface of the valve plate is a plane, the upper surface of the valve plate is an inclined plane, the corresponding lower surface of the valve cavity is a plane, and the upper surface of the valve cavity is an inclined plane.

4. A large bore drain valve according to claim 1, wherein: and a rubber layer used for sealing with the valve body is arranged on the upper surface of the valve plate.

5. A large bore drain valve according to claim 4, wherein: the valve plate is provided with a mounting groove for accommodating a rubber layer, the upper surface of the rubber layer is positioned on the same plane with the upper surface of the other part of the valve plate after mounting, and the rubber layer is fixed on the valve plate in a vulcanization mode and/or fixed on the valve plate through a mounting structure.

6. A large bore drain valve according to claim 4, wherein: and a ring of annular sealing ring is arranged at the contact position of the valve body and the rubber layer along the circumferential direction of the flow channel, and the sealing ring is in contact sealing with the rubber layer in a closed state.

7. A large bore drain valve according to claim 1, wherein: the end cover is provided with a through hole for the driving rod of the driving device to pass through, the inner wall of the through hole of the end cover is provided with an annular sealing groove, and a first O-shaped sealing ring used for sealing with the driving rod is arranged in the sealing groove.

8. A large bore drain valve according to claim 1, wherein: an anti-blocking groove with a downward opening is formed in the valve body at the front end of the valve cavity and communicated with the valve cavity.

9. A large bore drain valve according to claim 1, wherein: and a second O-shaped sealing ring for sealing the connecting interface of the valve body and the mounting equipment is arranged on the inner wall of the inlet of the valve body.

10. The utility model provides a train is with collection just system, includes transfer case and filth case, its characterized in that: a large-diameter drain valve according to any one of claims 1 to 9 is installed between the transfer tank and the filth tank.

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