CN211550583U

CN211550583U - Double-plate flat gate valve

Info

Publication number: CN211550583U
Application number: CN201922308019.3U
Authority: CN
Inventors: 孙晋; 卢军; 祁海俊; 茆荣鑫
Original assignee: Newman Yancheng Valve Manufacturing Co ltd
Current assignee: Newman Yancheng Valve Manufacturing Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-09-22
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a double plate gate valve, including sealed lid, valve body and two flashboards, insert between two flashboards and establish and be connected with same root threaded rod, the upper end screw thread of threaded rod runs through the top setting and the fixedly connected with driving-disc of sealed lid, the lower extreme of two flashboards matches and sealing connection with the bottom of valve body, the lower extreme fixedly connected with sealing washer of sealed lid, the lower extreme of sealing washer offsets the contact with the upper end of valve body, be equipped with two locking mechanism between sealed lid and the valve body, wherein be equipped with first cavity and two sealing mechanism that one end set up for the open type in a flashboard, two sealing mechanism's expansion end all offsets the contact with the inner wall of valve body, sliding seal is equipped with first piston plate in the first cavity, two first spring posts of fixedly connected with on the one end inner wall of. The utility model discloses not only the easy access, the leakproofness is good moreover.

Description

Double-plate flat gate valve

Technical Field

The utility model relates to a plate valve technical field especially relates to a double plate valve.

Background

The flat gate valve is a sliding valve with a closing member being a parallel gate plate, namely, the flat gate plate is driven by a valve rod to realize the opening and closing work, the prior double-gate plate flat gate valve is widely applied to pipelines of petroleum, natural gas, coal gas, liquefied petroleum gas, oil refining, airports, chemical engineering, oil and gas storage and transportation and the like as a closed circuit device, the flat gate valve is frequently required to be overhauled due to the working characteristics of the flat gate valve, most sealing covers on the flat gate valve are connected through threads, and then the opening and closing of the flat gate valve are complicated, and in addition, when the gate plates in most flat gate valves are sealed, the sealing performance is poor due to the impact force of liquid and gas. The flat gate valve used in the current market is mostly inconvenient to overhaul, so that the workload of workers is increased, and the sealing performance is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the most easy access maintenance of dull and stereotyped gate valve among the prior art, and the not good phenomenon of leakproofness, and the double plate dull and stereotyped gate valve that proposes, its easy access not only, and improved the leakproofness of device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a double-plate flat gate valve comprises a sealing cover, a valve body and two gate plates, wherein a same threaded rod is inserted and connected between the two gate plates, upper end threads of the threaded rod penetrate through the top of the sealing cover and are fixedly connected with a driving disc, the lower ends of the two gate plates are matched and hermetically connected with the bottom of the valve body, the lower end of the sealing cover is fixedly connected with a sealing ring, the lower end of the sealing ring is abutted and contacted with the upper end of the valve body, two locking mechanisms are arranged between the sealing cover and the valve body, one of the gate plates is internally provided with a first cavity with one end in an open type arrangement and two sealing mechanisms, the movable ends of the two sealing mechanisms are abutted and contacted with the inner wall of the valve body, a first piston plate is arranged in the first cavity in a sliding and sealing manner, the inner wall of one end of the first cavity is fixedly connected with two first spring columns, and the free ends of the two first spring columns, the sealing end of the first chamber is communicated with the two sealing mechanisms.

Preferably, locking mechanism includes the gag lever post of fixed connection in sealed lid lower extreme, the lower extreme of gag lever post slides and runs through the protruding end setting on the valve body, fixedly connected with seal box on the lateral wall of valve body, the lower extreme of gag lever post slides and runs through the top setting of seal box, the top fixedly connected with second spring post of seal box, the lower extreme fixedly connected with connecting block of second spring post, the one end fixedly connected with third spring post of connecting block, fixedly connected with bolt on the free end of third spring post, the one end that the third spring post was kept away from to the bolt is inserted and is located on the one end lateral wall of gag lever post, and locking mechanism's setting is convenient for opening and closing of sealed lid.

Preferably, sealing mechanism is including setting up the second cavity that one end in one of them flashboard set up for the open type, sliding seal is equipped with the second piston board in the second cavity, two fourth spring posts of fixedly connected with on the one end inner wall of second cavity, two the free end of fourth spring post all with the one end lateral wall fixed connection of second piston board, the one end fixedly connected with connecting rod of fourth spring post is kept away from to the second piston board, the one end fixedly connected with that the second piston board was kept away from to the connecting rod is sealed fills up, the inner wall counterbalance contact of sealed pad and valve body, the sealed end of second cavity sets up with the sealed end intercommunication of first cavity, and sealing mechanism's setting has improved this device's leakproofness.

Preferably, a box door is arranged on the outer side wall of the seal box in a sealing mode, and the arrangement of the box door facilitates the driving of a device in the seal box by a worker. First spring post includes that both ends difference fixed connection is in first cavity one end inner wall and the first telescopic link on the one end lateral wall of first piston board, the cover is equipped with first spring on the first telescopic link, the both ends of first spring respectively with first cavity one end inner wall and first piston board one end lateral wall fixed connection, the setting of first spring post, the removal and the spacing of the first piston board of being convenient for.

The utility model has the advantages that: through setting up sealed lid, valve body, flashboard, threaded rod, driving-disc, sealing washer, locking mechanism, first cavity, sealing mechanism, first piston plate and first spring post etc. improved the leakproofness of device, wherein and then improved the practicality of this device, wherein the setting of sealing washer and sealing mechanism has realized the sealed effect of double-deck to the device. Through setting up sealed lid, valve body, flashboard, threaded rod, driving-disc, sealing washer, locking mechanism, first cavity, sealing mechanism, first piston plate and first spring post etc. be convenient for this device open with closed, and then the staff of being convenient for maintains and detects this device, wherein the setting of seal box has realized the guard action to the structure in it.

Drawings

Fig. 1 is a perspective view of a double plate gate valve according to the present invention;

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

fig. 3 is a partially enlarged view of fig. 1 at B.

In the figure: the sealing structure comprises a sealing cover 1, a valve body 2, a flashboard 3, a threaded rod 4, a driving disk 5, a sealing ring 6, a locking mechanism 7, a first cavity 8, a sealing mechanism 9, a first piston plate 10, a first spring column 11, a limiting rod 12, a sealing box 13, a second spring column 14, a connecting block 15, a third spring column 16, a plug 17, a second cavity 18, a second piston plate 19, a fourth spring column 20, a connecting rod 21 and a sealing gasket 22.

Detailed Description

The technical solution in 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.

Referring to fig. 1-3, a double-plate gate valve comprises a sealing cover 1, a valve body 2 and two gate plates 3, wherein a same threaded rod 4 is inserted and connected between the two gate plates 3, the upper end thread of the threaded rod 4 penetrates through the top of the sealing cover 1 and is fixedly connected with a driving disc 5, the lower ends of the two gate plates 3 are matched and hermetically connected with the bottom of the valve body 2, the lower end of the sealing cover 1 is fixedly connected with a sealing ring 6, the lower end of the sealing ring 6 is abutted and contacted with the upper end of the valve body 2, two locking mechanisms 7 are arranged between the sealing cover 1 and the valve body 2, a first cavity 8 with one open end and two sealing mechanisms 9 are arranged in one gate plate 3, the movable ends of the two sealing mechanisms 9 are abutted and contacted with the inner wall of the valve body 2, a first piston plate 10 is arranged in the first cavity 8 in a sliding and sealing manner, two first spring, the free ends of two first spring posts 11 all with the one end lateral wall fixed connection of first piston plate 10, the sealed end of first cavity 8 and two sealing mechanism 9 all communicate the setting, it needs to explain, device in two sealing mechanism 9 and first cavity 8 and the first cavity 8 all sets up in the flashboard 3 of the one end that liquid or gas passed through, it needs to explain in addition, threaded rod 4 is shown inserting and is located between two flashboards 3 as figure 1, and all counterbalance contact with the lateral wall of two flashboards 3, the one end lateral wall of two flashboards 3 is equallyd divide do not just counterbalance contact with the one end inner wall phase-match of valve body 2, when rotation driving-disc 5 drives threaded rod 4 and rotates, upward or decurrent motion is only done to two flashboards 3, and the sealing connection of flashboard 3 and valve body 2 is prior art, no longer describe herein.

Locking mechanism 7 includes gag lever post 12 of fixed connection in sealed lid 1 lower extreme, the lower extreme of gag lever post 12 slides and runs through the protruding end setting on the valve body 2, fixedly connected with seal box 13 on the lateral wall of valve body 2, the lower extreme of gag lever post 12 slides and runs through the top setting of seal box 13, the top fixedly connected with second spring post 14 of seal box 13, the lower extreme fixedly connected with connecting block 15 of second spring post 14, the one end fixedly connected with third spring post 16 of connecting block 15, fixedly connected with bolt 17 on the free end of third spring post 16, the one end that third spring post 16 was kept away from to bolt 17 is inserted and is located on the one end lateral wall of gag lever post 12, locking mechanism 7's setting, be convenient for sealed opening and closing of lid 1, it needs to explain, be equipped with the blind hole (not shown in the figure) that matches with bolt 17 on the gag lever post 12 that is located in seal box 13.

The sealing mechanism 9 includes a second chamber 18 with an open end arranged in one of the gate plates 3, a second piston plate 19 is arranged in the second chamber 18 in a sliding and sealing manner, two fourth spring columns 20 are fixedly connected to an inner wall of one end of the second chamber 18, free ends of the two fourth spring columns 20 are both fixedly connected to a side wall of one end of the second piston plate 19, a connecting rod 21 is fixedly connected to one end of the second piston plate 19 away from the fourth spring columns 20, a sealing gasket 22 is fixedly connected to one end of the connecting rod 21 away from the second piston plate 19, the sealing gasket 22 is in contact with an inner wall of the valve body 2, a sealing end of the second chamber 18 is communicated with a sealing end of the first chamber 8, the sealing mechanism 9 is arranged to improve the sealing performance of the device, it should be noted that, when the fourth spring columns 20 are in an original state, the sealing gasket 22 is located in the second chamber 18, a box door (not shown in the figure) is arranged on an outer side wall of the sealing box, the setting of chamber door, the staff of being convenient for drives the device in the seal box 13, first spring post 11 includes that both ends difference fixed connection is in the first telescopic link on 8 one end inner walls of first cavity and the 10 one end lateral walls of first piston plate, the cover is equipped with first spring on the first telescopic link, the both ends of first spring respectively with 8 one end inner walls of first cavity and 10 one end lateral walls fixed connection of first piston plate, the setting of first spring post 11, the removal and the spacing of the 10 first piston plates of being convenient for.

It should be noted that, the second spring column 14 includes the second telescopic link that both ends difference fixed connection was in seal box 13 top and connecting block 15 upper end, the cover is equipped with the second spring on the second telescopic link, the both ends of second spring respectively with seal box 13's top and connecting block 15's upper end fixed connection, third spring column 16 includes that both ends difference fixed connection is in the one end of connecting block 15 and the one-ended third telescopic link of bolt 17, the cover is equipped with the third spring on the third telescopic link, the both ends of third spring respectively with the one end of connecting block 15 and the one end fixed connection of bolt 17, fourth spring column 20 includes that both ends difference fixed connection is in the fourth telescopic link on second cavity 18 one end inner wall and second piston plate 19 one end lateral wall, the cover is equipped with the fourth spring on the fourth telescopic link, the both ends of fourth spring respectively with the one end inner wall of second cavity 18 and the one end lateral wall fixed connection of second piston plate 19.

In the utility model, when the device needs to be overhauled, the box door can be manually opened, after the box door is opened, the bolt 17 is manually moved to separate the two bolts 17 from the blind holes on the same side, after one bolt 17 is moved out, a gasket and the like can be used for blocking the blind holes, another bolt 17 is moved to prevent the bolt 17 which is just moved out from entering the blind holes again, after the two bolts 17 are moved out, the sealing cover 1 can be opened to overhaul the device, after the overhaul is finished, the sealing ring 6 at the lower end of the sealing cover 1 is tightly abutted against the upper end of the valve body 2 and the two limiting rods 12 are reset, after the two limiting rods 12 are reset, the position of the bolt 17 can be adjusted according to the position of the blind holes under the elastic action of the second spring column 14 and the third spring column 16, so that the bolt 17 is inserted in the blind holes, after the sealing cover 1 is tightly covered, the, when two flashboards 3 make this device sealed in order to prevent liquid or gaseous when passing through, liquid or gaseous impact first piston plate 10, first piston plate 10 removes the atmospheric pressure in the first chamber 10 of extrusion, atmospheric pressure in the first chamber 10 gets into two second chambers 18, the pressure increase in the second chamber 18, and then extrude two sealed pads 22 and laminate more with the inner wall of valve body 2, and then improved the leakproofness of this device, after its impact force disappears, sealed pad 22 resets under the effect of fourth spring post 20 and first spring post 11 respectively with first piston plate 10.

Claims

1. A double-plate flat gate valve comprises a sealing cover (1), a valve body (2) and two gate plates (3), wherein the same threaded rod (4) is inserted and connected between the two gate plates (3), the upper end thread of the threaded rod (4) penetrates through the top of the sealing cover (1) and is fixedly connected with a driving disc (5), the lower ends of the two gate plates (3) are matched and hermetically connected with the bottom of the valve body (2), the double-plate flat gate valve is characterized in that the lower end of the sealing cover (1) is fixedly connected with a sealing ring (6), the lower end of the sealing ring (6) is abutted and contacted with the upper end of the valve body (2), two locking mechanisms (7) are arranged between the sealing cover (1) and the valve body (2), one of the two locking mechanisms (7) is internally provided with a first cavity (8) and two sealing mechanisms (9) with an open type, and the movable ends of the two sealing mechanisms (9) are abutted and contacted with the inner wall, sliding seal is equipped with first piston plate (10) in first cavity (8), two first spring post (11) of fixedly connected with on the one end inner wall of first cavity (8), two the free end of first spring post (11) all with the one end lateral wall fixed connection of first piston plate (10), the sealed end and two sealing mechanism (9) of first cavity (8) all communicate the setting.

2. A double plate sluice valve according to claim 1, wherein the locking mechanism (7) comprises a stop rod (12) fixedly attached to the lower end of the sealing gland (1), the lower end of the limiting rod (12) is arranged by sliding penetrating through the convex end on the valve body (2), the outer side wall of the valve body (2) is fixedly connected with a sealing box (13), the lower end of the limiting rod (12) is arranged by penetrating the top of the sealing box (13) in a sliding manner, the top of the seal box (13) is fixedly connected with a second spring post (14), the lower end of the second spring column (14) is fixedly connected with a connecting block (15), one end of the connecting block (15) is fixedly connected with a third spring column (16), the free end of the third spring column (16) is fixedly connected with a bolt (17), one end of the bolt (17) far away from the third spring column (16) is inserted into the side wall of one end of the limiting rod (12).

3. A double plate sluice valve according to claim 2, wherein the sealing means (9) comprises a second chamber (18) arranged in one of the plates (3) and having an open end, a second piston plate (19) is arranged in the second chamber (18) in a sliding sealing manner, two fourth spring columns (20) are fixedly connected to the inner wall of one end of the second chamber (18), the free ends of the two fourth spring columns (20) are fixedly connected with the side wall of one end of the second piston plate (19), one end of the second piston plate (19) far away from the fourth spring column (20) is fixedly connected with a connecting rod (21), one end of the connecting rod (21) far away from the second piston plate (19) is fixedly connected with a sealing gasket (22), the sealing gasket (22) is abutted to the inner wall of the valve body (2), and the sealing end of the second chamber (18) is communicated with the sealing end of the first chamber (8).

4. The double-plate flat gate valve according to claim 3, wherein a box door is hermetically arranged on the outer side wall of the seal box (13), the first spring column (11) comprises a first telescopic rod, two ends of the first telescopic rod are respectively and fixedly connected to the inner wall of one end of the first chamber (8) and the side wall of one end of the first piston plate (10), a first spring is sleeved on the first telescopic rod, and two ends of the first spring are respectively and fixedly connected to the inner wall of one end of the first chamber (8) and the side wall of one end of the first piston plate (10).