CN217234407U

CN217234407U - Upward-spreading type discharge valve

Info

Publication number: CN217234407U
Application number: CN202220353502.2U
Authority: CN
Inventors: 贾怀军; 李威; 陈昌华; 邓鑫; 张小强
Original assignee: Sichuan Suc Flow Control Equipment Co ltd
Current assignee: Sichuan Suke Fluid Control Equipment Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-08-19
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses an upward-expanding type baiting valve relates to baiting valve technical field for solve among the prior art medium and adhere to on the valve rod easily, and get into the filler position to damage the filler easily, cause the problem of valve outer leakage, the utility model discloses a valve body, install the disk seat in the valve body, the flange is installed to the upper end of valve body, install the valve clack on the flange, install the valve clack lid on the valve clack, the packing box is installed to the lower part in the valve body, the upper end fixedly connected with spacer sleeve of packing box, the upper end and the valve clack fixed connection of spacer sleeve, install the valve rod through the bearing in the packing box, in the upper end of valve rod extends to the valve clack, the lower extreme extends to outside the valve body. The utility model discloses in can effectual isolation medium like high temperature tar etc. through above-mentioned technical scheme to make the medium be difficult to adhere to on the valve rod, and then make the medium be difficult to damage and pack, and be difficult to cause the valve to leak outward.

Description

Upward-spreading type discharge valve

Technical Field

The utility model relates to a baiting valve technical field, more specifically relate to an upward open type baiting valve.

Background

Ball valve and Y type baiting valve are often adopted to the baiting valve, the flow resistance coefficient of ball valve is little, sealing performance is good, but purchasing cost is high, adopt the import ball valve in some key positions very much, the price is very expensive, and the ball valve is closing the back, the spheroid can not flush with the cauldron bottom completely, there is certain material between spheroid and the cauldron bottom and piles up the space, can lead to the blowing incomplete, and Y type baiting valve structure is simple relatively, the price is lower relatively, and sealed vice basically flushes with the cauldron bottom, the blowing is more thorough.

The common Y-shaped discharge valve is divided into an upper-expanding type and a lower-expanding type, a valve clack of the upper-expanding type discharge valve moves upwards to open the valve, the lower-expanding type is opposite, currently, domestic valve manufacturers are not sufficient to master the core technology of the discharge valve, the research on the materials used by the valve is not deep enough, most of the occasions capable of being used are more conventional working conditions, and in the face of various severe and severe working conditions of the client terminal market, the discharge valve has higher requirements besides the most basic temperature and pressure requirements, such as the fact that a medium contains granular solids, corrosive gases and liquids and high-low temperature alternation; high hardness medium adheres to the valve rod surface, damages special operating mode such as valve rod packing loss in the motion process, needs to take reasonable material collocation, and reliable seal structure is solved.

The working conditions of the chemical industry are generally severe, for example, the production process of hexamethylene diamine is an important organic chemical raw material, the application is very wide, the development and the utilization of the hexamethylene diamine are emphasized by many countries, the processes for producing hexamethylene diamine mainly comprise an adipic acid method, an adiponitrile method, a butadiene method, a caprolactam method and the like, the adiponitrile method and the caprolactam method are mostly adopted to produce hexamethylene diamine in China, the adiponitrile method adopts adiponitrile hydrogenation catalysis, which is divided into a low pressure method and a high pressure method, media comprise ethanol, liquid ammonia, sodium hydroxide, hydrogen and the like, the reaction temperature is 100-, the tar discharge port adopts a Y-shaped discharge valve, high-temperature tar can be changed into a solid state after being cooled, the hardness is greatly improved, the tar is attached to the valve rod and enters the filler part, and the filler is easy to damage, so that the valve is easy to leak.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve among the prior art medium attached to the valve rod easily to get into the filler position, thereby damage the filler easily, cause the problem that the valve leaks outward, the utility model provides an on open-type baiting valve, so that the medium is difficult to attach to on the valve rod, thereby be difficult to damage the filler, be difficult to cause the valve to leak outward.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides an on open up formula baiting valve, includes the valve body, install the disk seat in the valve body, the flange is installed to the upper end of valve body, install the valve clack on the flange, install the valve clack lid on the valve clack, packing box is installed to the lower part in the valve body, the upper end fixedly connected with spacer sleeve of packing box, the upper end and the valve clack fixed connection of spacer sleeve, install the valve rod through the bearing in the packing box, in the upper end of valve rod extends to the valve clack, the lower extreme extends to outside the valve body.

Further, install sealing mechanism between the lower part of valve body and valve rod, sealing mechanism includes the gland who is connected with the gland, install fastening components between gland and the valve body, still install the end cover between valve body and gland, install locking Assembly between end cover and the valve body.

Preferably, the fastening assembly comprises a fastening bolt installed between the packing gland and the valve body, a belleville spring in contact with the packing gland is installed on the fastening bolt, and a fastening nut in contact with the belleville spring is also installed on the fastening bolt.

Preferably, the locking assembly comprises a screw installed between the end cover and the valve body, and an O-shaped ring is installed between the end cover and the stuffing box.

Preferably, a guide cylinder is arranged between the valve seat and the isolation sleeve.

Preferably, a plurality of labyrinth grooves are formed on the side surface of the valve clack close to the valve seat.

Preferably, a positioning screw plug is arranged between the valve body and the stuffing box.

Furthermore, the valve further comprises a pneumatic actuator, a plurality of supports are arranged between the pneumatic actuator and the valve body, and the pneumatic actuator is connected with the valve rod through a coupler.

The utility model has the advantages as follows:

(1) the utility model discloses in set up the spacer sleeve through the outside at the valve rod, spacer sleeve and packing box, the equal fixed connection of valve clack can effectual isolation medium like high temperature tar etc. like this to make the medium be difficult to adhere to on the valve rod, and then make the medium be difficult to harm the filler, and be difficult to cause the valve to leak outward.

(2) The utility model discloses if well spacer sleeve damages, the packing box can also carry out secondary seal, and the packing box has dynamic load compensation arrangement to the life of valve has been improved greatly.

(3) The utility model discloses well spacer sleeve adopts radial seal, has retrencied the valve structure, has reduced installation space, has reduced the valve neck cavity, has reduced the accumulation volume of material to the efficiency of blowing has been improved.

(4) The utility model discloses the radial seal of separating sleeve adopts the double seal of packing box and O type circle in the well, and sealing performance is more reliable.

(5) The utility model discloses well adoption location plug screw fixes the spacer sleeve on the valve body, has avoided screw thread revolution mechanic when the installation, prevents that the spacer sleeve from twisting reverse the damage.

(6) The utility model discloses well labyrinth groove has the secondary seal effect, and when the isolation cover had weak leakage, the medium was piled up at the labyrinth inslot, waited that the valve was opened next time and is got into the low reaches along with the material.

(7) The utility model discloses install the guide cylinder between disk seat and isolation cover, the guide cylinder can reduce the valve and open the back medium and act on the power of valve clack to can reduce the valve rod atress and the possibility of warping, and can reduce the packing box because the lever power of valve rod and the possibility of inefficacy.

Drawings

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

FIG. 2 is a schematic view of the sectional structure of the upper part of the discharge valve after the valve is opened;

FIG. 3 is a schematic view of the front partial sectional structure of the valve body, the sealing mechanism, etc. of the present invention;

FIG. 4 is an enlarged schematic view of the present invention at A in FIG. 1;

reference numerals: the valve body sealing device comprises a pneumatic actuator 1, a support 2, a coupler 3, a valve rod 4, a packing gland 5, a screw 6, an O-shaped ring 7, a packing box 8, a bearing 9, a positioning screw plug 10, an isolating sleeve 11, a valve body 12, a valve seat 13, a flange 14, a guide cylinder 15, a valve clack 16, a valve clack cover 17, a fastening bolt 18, an end cover 19, a belleville spring 20, a fastening nut 21 and a labyrinth groove 22.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Examples

As shown in fig. 1-4, this embodiment provides an upward-expanding type baiting valve, including a valve body 12, a valve seat 13 is installed in the valve body 12, a flange 14 is installed at the upper end of the valve body 12, a valve clack 16 is installed on the flange 14, a valve clack cover 17 is installed on the valve clack 16, a stuffing box 8 is installed at the lower part in the valve body 12, an upper end fixedly connected with a spacer sleeve 11 of the stuffing box 8, the upper end of the spacer sleeve 11 is fixedly connected with the valve clack 16, a valve rod 4 is installed in the stuffing box 8 through a bearing 9, the upper end of the valve rod 4 extends into the valve clack 16, the lower end extends out of the valve body 12, the upward-expanding type baiting valve further includes a pneumatic actuator 1, a plurality of supports 2 are installed between the pneumatic actuator 1 and the valve body 12, the pneumatic actuator 1 is connected with the valve rod 4 through a coupler 3, wherein, the valve seat 13 adopts an independent structure, which facilitates replacement of spare parts, and reduces maintenance cost.

Preferably, a guide cylinder 15 is installed between the valve seat 13 and the isolation sleeve 11, and the guide cylinder 15 can reduce the force of the medium acting on the valve clack 16 after the valve is opened, so that the possibility of deformation of the valve rod 4 due to stress can be reduced, and the possibility of failure of the stuffing box 8 due to the lever force of the valve rod 4 can be reduced.

Preferably, a plurality of labyrinth grooves 22 are formed in the side face, close to the valve seat 13, of the valve clack 16, the labyrinth grooves 22 have a secondary sealing effect, when the isolating sleeve 11 is slightly leaked, media are accumulated in the labyrinth grooves 22, when the valve is opened next time and enters downstream along with materials, the valve seat 13 is in a detachable design, a metal sealing main seal and a labyrinth groove 22 auxiliary seal are adopted in a seal pair of the valve seat 13 and the valve clack 16, and the seal pair is a metal seal and is suitable for severe working conditions such as high temperature, high pressure and corrosion.

Preferably, a positioning screw plug 10 is arranged between the valve body 12 and the stuffing box 8, and the isolating sleeve 11 is fixed on the valve body 12 by the positioning screw plug 10, so that a thread rotating structure is avoided during installation, and the isolating sleeve 11 is prevented from being damaged by torsion.

Further, a sealing mechanism is arranged between the lower part of the valve body 12 and the valve rod 4, the sealing mechanism comprises a packing gland 5 connected with a packing box 8, a fastening component is arranged between the packing gland 5 and the valve body 12, an end cover 19 is also arranged between the valve body 12 and the packing gland 5, a locking component is arranged between the end cover 19 and the valve body 12, the fastening component comprises a fastening bolt 18 arranged between the packing gland 5 and the valve body 12, a disc spring 20 in contact with the packing gland 5 is arranged on the fastening bolt 18, a fastening nut 21 in contact with the disc spring 20 is also arranged on the fastening bolt 18, the locking component comprises a screw 6 arranged between the end cover 19 and the valve body 12, an O-shaped ring 7 is arranged between the end cover 19 and the packing box 8, a double seal of the packing box 8 and the O-shaped ring 7 is adopted for radial seal of the isolation sleeve 11, a graphite wound gasket is adopted for seal between the valve body 12 and the valve seat 13, and a multi-stage seal superposition technology is adopted for the position of the valve rod 4, the sealing performance is more reliable.

The working principle is as follows: when the valve clack is installed, the valve clack 16, the isolation sleeve 11 and the stuffing box 8 are welded into a whole, screwed into the guide cylinder 15 and assembled into an axial telescopic sealing isolation sleeve assembly for later use; the sealing gasket is arranged in the valve body 12, the valve seat 13 is arranged in the valve body 12 and is screwed tightly; inversely installing the axial telescopic sealing isolation sleeve component into the valve body 12, installing a sealing gasket and a positioning screw plug 10 into the valve body 12, fixing the axial telescopic sealing isolation sleeve component and screwing down; the O-shaped ring 7 is arranged in the end cover 19, integrally arranged in the valve body 12, arranged in the screw 6 and screwed tightly; inversely installing the valve rod 4 into an axial telescopic sealing isolation sleeve assembly, installing a sealing gasket into the valve clack 16, then installing the valve clack cover 17 and the hexagon socket head cap screw 6, and screwing; the bearing 9 is arranged in a stuffing box 8, a stuffing gland 5 is arranged, and a fastening stud, a disc spring 20 and a fastening nut 21 are worn and screwed; mounting the holder 2 into the valve body 12; the pneumatic actuator 1 is arranged in the bracket 2, the shaft coupling 3 is assembled with the extending shaft of the pneumatic actuator 1, and the connecting screw 6 is screwed down;

according to the technical scheme, the isolation sleeve 11 is arranged outside the valve rod 4, the isolation sleeve 11 is fixedly connected with the stuffing box 8 and the valve clack 16, namely the isolation sleeve 11, the stuffing box 8 and the valve clack 16 can be welded and fixed together, a protection cavity is formed among the isolation sleeve 11, the stuffing box 8 and the valve clack 16, and the valve rod 4 is installed in the protection cavity, so that a medium such as high-temperature tar and the like can be effectively isolated, potential leakage points are reduced, the medium is not easy to attach to the valve rod 4, the medium is not easy to damage the stuffing, and the valve is not easy to leak; in addition, traditional bellows adopts end face seal, and end face seal gasket's external diameter is far away than the bellows external diameter, and the part is many, and the required space of assembly is great, has great cavity at the valve neck, can pile up a large amount of materials, influences blowing efficiency, and the separation sleeve 11 of this application adopts radial seal, has retrencied the valve structure, has reduced installation space, reduces valve neck cavity, and it is piled up to reduce the material, improves blowing efficiency.

Claims

1. The utility model provides an upward-expanding type baiting valve, includes valve body (12), install disk seat (13) in valve body (12), flange (14) are installed to the upper end of valve body (12), install valve clack (16) on flange (14), its characterized in that: packing box (8) are installed to lower part in valve body (12), the upper end of packing box (8) is connected with spacer sleeve (11), the upper end and valve clack (16) of spacer sleeve (11) are connected, install valve rod (4) through bearing (9) in packing box (8), the upper end of valve rod (4) extends to in valve clack (16), and the lower extreme extends to outside valve body (12).

2. The pop-up baiting valve as claimed in claim 1, further comprising: install sealing mechanism between lower part and valve rod (4) of valve body (12), sealing mechanism includes gland (5) of being connected with gland (8), install fastening components between gland (5) and valve body (12), still install end cover (19) between valve body (12) and gland (5), install locking components between end cover (19) and valve body (12).

3. The pop-up type baiting valve according to claim 2, wherein: the fastening assembly comprises a fastening bolt (18) installed between the packing gland (5) and the valve body (12), a disc spring (20) in contact with the packing gland (5) is installed on the fastening bolt (18), and a fastening nut (21) in contact with the disc spring (20) is further installed on the fastening bolt (18).

4. The pop-up type baiting valve according to claim 2, wherein: the locking assembly comprises a screw (6) arranged between an end cover (19) and a valve body (12), and an O-shaped ring (7) is arranged between the end cover (19) and a stuffing box (8).

5. The pop-up baiting valve as claimed in claim 1, further comprising: and a guide cylinder (15) is arranged between the valve seat (13) and the isolation sleeve (11).

6. The pop-up baiting valve as claimed in claim 1, further comprising: the side surface of the valve clack (16) close to the valve seat (13) is provided with a plurality of labyrinth grooves (22).

7. The pop-up baiting valve as claimed in claim 1, further comprising: and a positioning screw plug (10) is arranged between the valve body (12) and the stuffing box (8).

8. A pop-up baiting valve as claimed in any of claims 1 to 7, further characterized by: the valve is characterized by further comprising a pneumatic actuator (1), a plurality of supports (2) are mounted between the pneumatic actuator (1) and the valve body (12), and the pneumatic actuator (1) is connected with the valve rod (4) through a coupler (3).