CN212004477U

CN212004477U - High-tightness air relief valve cover of emergency valve

Info

Publication number: CN212004477U
Application number: CN202020514975.7U
Authority: CN
Inventors: 周健鹏; 曹太宗
Original assignee: Yuhuan Mingdao Locomotive Parts Co ltd
Current assignee: Yuhuan Mingdao Locomotive Parts Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-11-24
Anticipated expiration: 2030-04-09

Abstract

The utility model discloses a high tightness emergency valve gap of letting out air, including the lid, the lid divide into guide part, installation department and connecting portion from left to right in proper order, the upper and lower both ends of installation department are provided with the location otic placode, be provided with the locating hole on the location otic placode, connecting portion are the echelonment and its external diameter reduces from left to right in proper order, connecting portion divide into spacing section, location section and embedding section from left to right in proper order, there are a plurality of first bolt holes along the distribution of circumferential direction on the outer wall of location section, the embedding section is the taper sleeve form, there are a plurality of second bolt holes along the distribution of circumferential direction on its outer wall, first bolt hole and second bolt hole stagger each other and set up; the rear end of the installation part is also provided with a blind hole, and the inner wall of the installation part is also provided with a connecting hole communicated with the blind hole. Be provided with the location otic placode of two symmetries on the installation department to set up the locating hole that supplies the bolt embedding on the location otic placode, come to fix location otic placode and apron through the bolt, the effectual installation intensity that improves the apron.

Description

High-tightness air relief valve cover of emergency valve

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a high tightness emergency valve gap of letting out air.

Background

The emergency air release valve mainly comprises a valve body, a diaphragm plate, a piston, a stabilizing spring, a sandwich valve, a guide rod, a firewood adding valve spring, a push rod, a microswitch, a valve cover and the like. The function is as follows: in order to accelerate the air exhaust speed of the train pipe, shorten the air exhaust time, shorten the braking distance and prevent the misoperation of moving a brake handle when a driver does not stop stably during emergency braking, thereby causing the accident of train hook breakage; in addition, when the train is separated, the air charging passage and the power source can be automatically cut off to prevent the train from being broken, and during emergency braking, the device also plays a role in increasing the additional flow velocity of the pressure of the train pipe, so that the emergency braking of the front train and the rear train is close to the same.

The valve cover of some existing emergency air release valves is not high in strength after being installed on an air release valve port due to structural defects, and is easy to loosen after long-time work, so that air tightness of the emergency air release valves is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists to the aforesaid, provide an emergency valve gap of letting out air of high tightness, through the improvement to the valve gap to improve its sealing performance and intensity.

The purpose of the utility model is realized like this: the utility model provides a high tightness emergency valve gap of letting out wind, includes the lid, the lid is hollow structure, its characterized in that: the cover body is sequentially divided into a guide part, an installation part and a connecting part from left to right, the guide part is of a cylindrical structure, positioning lug plates are arranged at the upper end and the lower end of the installation part, positioning holes for embedding bolts are formed in the positioning lug plates, the connecting part is in a step shape, the outer diameter of the connecting part is sequentially reduced from left to right, the connecting part is sequentially divided into a limiting section, a positioning section and an embedding section from left to right, a plurality of first bolt holes distributed along the circumferential direction are formed in the outer wall of the positioning section, the embedding section is in a taper sleeve shape, a plurality of second bolt holes distributed along the circumferential direction are formed in the outer wall of the embedding section, the first bolt holes and the second bolt holes are staggered, clamping grooves which are formed in the end part of the positioning section along the length direction and extend to the positioning section are formed in the end part of the positioning section; the rear end of installation department has still seted up the blind hole, the installation department inner wall open still be equipped with the connecting hole that the blind hole is linked together.

By adopting the technical scheme, the guide part plays a role in sealing and positioning and is arranged on the valve port of the emergency valve blow-off valve; the mounting part is used for fixing the cover body, two symmetrical positioning lug plates are arranged on the mounting part for improving the connection strength, positioning holes for embedding bolts are formed in the positioning lug plates, and the positioning lug plates and the cover plate are fixed through the bolts, so that the mounting strength of the cover plate is effectively improved; connecting portion are used for being connected with the protection casing on the micro-gap switch, for improving the joint strength of the two, to this be spacing section with connecting portion, location section and embedding section are all pegged graft in the port of protection casing, spacing section then is used for playing the spacing effect of pressure equipment, through set up first bolt hole and second bolt hole respectively on location section and embedding section, and stagger first bolt hole and second bolt hole and set up, thereby effectual improvement installation strength, wherein, for improving the compactness between the two, to this set up the embedding section into the awl cover form, and set up the draw-in groove on its surface, through improving the area of contact between the two, improve the compactness.

The utility model discloses further set up to: the installation part is internally provided with a buffer cavity, the connecting hole is communicated with the blind hole through the buffer cavity, and the inner diameter of the buffer cavity is larger than that of the blind hole and that of the connecting hole.

By adopting the technical scheme, the blind hole is used for being connected with a return pipeline (a pipeline communicated with the brake pipe hole) of the emergency valve body, and the connecting hole is used for communicating the cavity of the cover body with the blind hole; in order to buffer the gas flowing to the connecting hole from the blind hole when the emergency valve is in an inflation relieving state, a buffer cavity is arranged between the blind hole and the connecting hole, and the effect of reducing pressure is achieved through the buffer cavity.

The utility model discloses further set up to: the installation department still seted up with the disappointing hole that the buffering cavity is linked together, the internal diameter in disappointing hole is crescent from inside to outside.

Through adopting above-mentioned technical scheme, the hole of disappointing is used for installing the check valve, and the state is alleviated in aerifing to the emergency valve, when atmospheric pressure in the lid is great, can discharge gas from the hole of disappointing through the check valve to play the effect of decompression.

The utility model discloses further set up to: the outer wall of the guide part is provided with an annular mounting groove which is radially and inwards arranged.

Through adopting above-mentioned technical scheme, for improving the connection gas tightness of guide part and emergency valve body, set up annular mounting groove to this on the outer wall of guide part, thereby reach the effect that improves the compactness between the two through installation sealing ring in annular mounting groove.

The utility model discloses further set up to: the surface of the cover body is plated with a nickel layer, and the thickness of the nickel layer is 8-25 mu m.

By adopting the technical scheme, the nickel layer is plated on the surface of the cover body by an electrolytic or chemical method, so that the wear resistance, the mechanical strength, the acid resistance, the corrosion resistance and other properties of the surface of the cover body can be effectively improved.

The utility model has the advantages that: 1. the mounting part is provided with two symmetrical positioning lug plates, positioning holes for embedding bolts are formed in the positioning lug plates, and the positioning lug plates and the cover plate are fixed through the bolts, so that the mounting strength of the cover plate is effectively improved; 2. in order to improve the tightness of the connecting part on the microswitch protective cover, the embedded section is arranged into a taper sleeve shape, a clamping groove is arranged on the surface of the embedded section, and the tightness is improved by improving the contact area between the embedded section and the microswitch protective cover; 3. in order to buffer the gas flowing to the connecting hole from the blind hole when the emergency valve is in an inflation relieving state, a buffer cavity is arranged between the blind hole and the connecting hole, and the effect of reducing pressure is achieved through the buffer cavity; 4. for the connection gas tightness of improvement guide part and emergency valve body, seted up annular mounting groove to this on the outer wall of guide part, thereby reach the effect that improves the compactness between the two through installation sealing ring in annular mounting groove.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic side view of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

the reference numbers in the figures are: 1. a cover body; 2. a guide portion; 21. an annular mounting groove; 3. an installation part; 31. positioning the ear plate; 311. positioning holes; 32. blind holes; 33. connecting holes; 34. a buffer cavity; 35. an air release hole; 4. a connecting portion; 41. a limiting section; 42. a positioning section; 421. a first bolt hole; 43. an embedding section; 431. a second bolt hole; 432. a clamping groove.

Detailed Description

In order to make the technical solutions in the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings:

a high-tightness emergency valve bleed valve cover is disclosed as shown in figure 1, and comprises a cover body 1 with a hollow structure, wherein a nickel layer is plated on the surface of the cover body 1 through an electrolytic or chemical method, the thickness of the nickel layer is 8-25 mu m, and the wear resistance, the mechanical strength, the acid resistance, the corrosion resistance and the like of the surface of the cover body 1 can be effectively improved through nickel plating.

As shown in fig. 1, 2 and 3, the cover body 1 is divided into a guide portion 2, a mounting portion 3 and a connecting portion 4 from left to right in sequence, the guide portion 2 is a cylindrical structure, the upper and lower ends of the mounting portion 3 are provided with positioning lugs 31, the positioning lugs 31 are provided with positioning holes 311 for bolts to be embedded, the connecting portion 4 is stepped and the outer diameter thereof is reduced from left to right in sequence, the connecting portion 4 is divided into a limiting section 41, a positioning section 42 and an embedding section 43 from left to right in sequence, the outer wall of the positioning section 42 is provided with a plurality of first bolt holes 421 distributed along the circumferential direction, the embedding section 43 is in a taper sleeve shape, a plurality of second bolt holes 431 distributed along the circumferential direction are formed in the outer wall of the positioning section, the first bolt holes 421 and the second bolt holes 431 are arranged in a staggered mode, clamping grooves 432 which are formed in the length direction of the end portion of the positioning section 42 and extend to the positioning section 42 are formed in the end portion of the positioning section 42, and the plurality of clamping grooves 432 are uniformly distributed along the circumferential direction; the rear end of the mounting part 3 is also provided with a blind hole 32, and the inner wall of the mounting part 3 is also provided with a connecting hole 33 communicated with the blind hole 32.

The guide part 2 plays a role in sealing and positioning and is arranged on a valve port of the emergency valve air release valve; the mounting part 3 is used for fixing the cover body 1, and in order to improve the connection strength, two symmetrical positioning lug plates 31 are arranged on the mounting part 3, positioning holes 311 for embedding bolts are formed in the positioning lug plates 31, and the positioning lug plates 31 and the cover plate are fixed through the bolts, so that the mounting strength of the cover plate is effectively improved; connecting portion 4 is used for being connected with the protection casing on the micro-gap switch, for improving the joint strength of the two, divide into spacing section 41 with connecting portion 4 to this, location section 42 and embedding section 43 are all pegged graft in the port of protection casing, spacing section 41 is used for playing the spacing effect of pressure equipment, through set up first bolt hole 421 and second bolt hole 431 on location section 42 and embedding section 43 respectively, and stagger first bolt hole 421 and second bolt hole 431 and set up, thereby effectual improvement installation strength, wherein, for improving the compactness between the two, set up embedding section 43 into the taper sleeve form to this, and set up draw-in groove 432 on its surface, through improving the area of contact between the two, improve the compactness.

Preferably, as shown in fig. 3, a buffer cavity 34 is provided in the mounting portion 3, the connecting hole 33 communicates with the blind hole 32 through the buffer cavity 34, and the inner diameter of the buffer cavity 34 is larger than the inner diameters of the blind hole 32 and the connecting hole 33.

The blind hole 32 is used for connecting with a return pipe (a pipe communicated with a brake pipe hole) of the emergency valve body, and the connecting hole 33 is used for communicating the cavity of the cover body 1 with the blind hole 32; in order to buffer the gas flowing from the blind hole 32 to the connection hole 33 when the emergency valve is in the inflation relieving state, a buffer cavity 34 is arranged between the blind hole 32 and the connection hole 33, and the buffer cavity 34 has a pressure reduction effect.

Preferably, as shown in fig. 3, the mounting portion 3 further defines a relief hole 35 communicating with the cushion cavity 34, and an inner diameter of the relief hole 35 gradually increases from inside to outside.

The air release hole 35 is used for installing a one-way valve, and when the emergency valve is in an inflation relieving state and the air pressure in the cover body 1 is large, the air can be discharged from the air release hole 35 through the one-way valve, so that the effect of pressure reduction is achieved.

Preferably, as shown in fig. 2, in order to improve the connection airtightness between the guide part 2 and the emergency valve body, an annular mounting groove 21 is formed in the outer wall of the guide part 2, and a sealing ring is mounted in the annular mounting groove 21, thereby achieving an effect of improving the tightness between the guide part 2 and the emergency valve body.

The above embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained based on the above embodiments by those skilled in the art without any creative work shall fall within the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a high tightness emergency valve lid of releasing wind, includes lid (1), lid (1) is hollow structure, its characterized in that: the cover body (1) is divided into a guide part (2), an installation part (3) and a connecting part (4) from left to right in sequence, the guide part (2) is of a cylindrical structure, positioning lug plates (31) are arranged at the upper end and the lower end of the installation part (3), positioning holes (311) for embedding bolts are formed in the positioning lug plates (31), the connecting part (4) is in a step shape, the outer diameter of the connecting part is reduced from left to right in sequence, the connecting part (4) is divided into a limiting section (41), a positioning section (42) and an embedding section (43) from left to right in sequence, a plurality of first bolt holes (421) distributed along the circumferential direction are formed in the outer wall of the positioning section (42), the embedding section (43) is in a taper sleeve shape, a plurality of second bolt holes (431) distributed along the circumferential direction are formed in the outer wall of the embedding section (43), and the first bolt holes (421) and the second, the end part of the positioning section (42) is provided with a plurality of clamping grooves (432) which are arranged along the length direction and extend to the positioning section (42), and the plurality of clamping grooves (432) are uniformly distributed along the circumferential direction; the rear end of installation department (3) has still seted up blind hole (32), installation department (3) inner wall open still be equipped with connecting hole (33) that blind hole (32) are linked together.

2. The high-tightness emergency valve bleed valve cover according to claim 1, wherein: be provided with buffering cavity (34) in installation department (3), connecting hole (33) pass through buffering cavity (34) with blind hole (32) are linked together, the internal diameter of buffering cavity (34) is greater than blind hole (32) and the internal diameter of connecting hole (33).

3. The high-tightness emergency valve bleed valve cover according to claim 2, wherein: installation department (3) still seted up with disappointing hole (35) that buffer cavity (34) are linked together, the internal diameter of disappointing hole (35) is crescent from inside to outside.

4. The high-tightness emergency valve bleed valve cover according to claim 1, wherein: the outer wall of the guide part (2) is provided with an annular mounting groove (21) which is opened inwards in the radial direction.

5. The high-tightness emergency valve release valve cover according to any one of claims 1 to 4, wherein: the surface of the cover body (1) is plated with a nickel layer, and the thickness of the nickel layer is 8-25 mu m.