CN111765263B

CN111765263B - Gate valve

Info

Publication number: CN111765263B
Application number: CN202010820521.7A
Authority: CN
Inventors: 李新宇; 朱贤松; 蒋峻峰
Original assignee: Wenzhou Luoke Valve Technology Co ltd
Current assignee: Wenzhou Luoke Valve Technology Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2022-06-03
Anticipated expiration: 2040-08-14
Also published as: CN111765263A

Abstract

The application relates to a gate valve, which comprises a valve body, wherein a feed port and a discharge port are formed in the valve body, the feed port and the discharge port are arranged in a collinear way on the central axis, a valve plate for closing a channel between the feed port and the discharge port is arranged at the junction of the feed port and the discharge port in the valve body, a slide way for the valve plate to slide along the direction vertical to the central axis of the feed port is arranged on the valve body, and a control mechanism for controlling the valve plate to slide along the slide way is arranged on the valve body; control mechanism includes with valve plate fixed connection and along the slide axis direction slide wear to establish the valve rod of valve body, set up control valve rod pivoted lifting unit on the valve body, lifting unit sets up the outside at the valve body. This application has the effect that improves the gate valve leakproofness.

Description

Gate valve

Technical Field

The application relates to the field of valves, in particular to a gate valve.

Background

The gate valve is the most important valve at present, and is widely used for the circulation and the stopping of media such as liquid, gas, dust and the like. Usually, this gate valve includes the valve body, and this valve body lower part has feed inlet and discharge gate, and the left end of this feed inlet and the right-hand member of this discharge gate all have sealed face, and the movive seal complex is equipped with between these 2 sealed faces can reciprocate and can not rotatory flashboard. Meanwhile, the upper part of the flashboard is connected with a valve rod, and the upper part of the valve rod is connected with a handle through a lead screw nut mechanism. That is, this handle rotation back drives this valve rod through this lead screw nut mechanism and reciprocates, and then this flashboard reciprocates and forms sealed or open to these 2 sealed inclined planes, finally forms the link up or end of this feed inlet and this discharge gate.

With respect to the related art in the above, the inventors consider that: because the valve rod ceaselessly rotates or has the trend of rotating to the sealed effect of the junction of this valve rod upper portion and this valve body is relatively poor, causes the holistic sealed effect of gate valve not very good.

Disclosure of Invention

In order to improve the sealed effect of gate valve, this application provides a gate valve.

The application provides a gate valve adopts following technical scheme:

a gate valve comprises a valve body, wherein a feed port and a discharge port are formed in the valve body, the feed port and the discharge port are arranged in a collinear manner on the central axis, a valve plate for closing a channel between the feed port and the discharge port is arranged at the junction of the feed port and the discharge port in the valve body, a slide way for the valve plate to slide along the direction vertical to the central axis of the feed port is arranged on the valve body, and a control mechanism for controlling the valve plate to slide along the slide way is arranged on the valve body;

control mechanism includes with valve plate fixed connection and along slide axis direction slip wear to establish the valve rod of valve body, set up control valve rod pivoted lifting unit on the valve body, lifting unit sets up the outside at the valve body.

Through adopting above-mentioned technical scheme, when using the state of control mechanism control valve plate, start lifting unit, drive the valve rod along the axis direction of slide can, valve rod and valve body sliding connection compare in valve rod and valve body threaded connection among the above-mentioned correlation technique, the leakproofness between valve rod and the valve body in this application is changeed and is guaranteed to the whole leakproofness of gate valve has been improved.

Preferably, the lifting assembly comprises a lifting frame fixed on the valve body, a screw rod fixedly connected with the lifting frame and slidably penetrating through the valve rod, and a threaded sleeve rotatably connected to the valve rod and in threaded connection with the screw rod, and a sliding groove for the screw rod to slide along the axial direction of the valve rod is formed in the valve rod.

Through adopting above-mentioned technical scheme, through rotating the thread bush, thread bush and screw rod screw-thread fit drive the thread bush and remove along the length direction of screw rod, and then drive the valve rod and remove along the length direction of screw rod to the screw rod is worn to establish in the valve rod, has guaranteed the stability that the valve rod slided along the slide axis.

Preferably, the lifting frame is provided with a driving assembly for driving the threaded sleeve to rotate, the driving assembly comprises a driving rod parallel to the screw threads of the screw rod and penetrating the lifting frame, a driving gear coaxially arranged at the lower end of the driving rod and a driven gear coaxially sleeved on the threaded sleeve, the driving gear is kneaded with the teeth of the driven gear, and when the driving rod is rotated, the driving gear and the driven gear have the same movement speed along the axial direction of the screw rod.

Through adopting above-mentioned technical scheme, start drive assembly when needs and rotate the thread bush, rotate the actuating lever, actuating lever and crane threaded connection drive the actuating lever along the removal of actuating lever axis direction, the driving gear takes place to rotate simultaneously, the driving gear drives driven gear and rotates, driven gear drives the thread bush and rotates, and then drives the thread bush and remove along the length direction of screw, has realized that the drive valve rod removes along the axis direction of slide, and then has realized the function of opening and close of valve plate.

Preferably, a hand wheel is coaxially arranged at one end, deviating from the driving gear, of the driving rod.

Through adopting above-mentioned technical scheme, make things convenient for the staff to revolve and twist the actuating lever.

Preferably, one end, deviating from the driving gear, of the driving rod is square, and a square sleeve for clamping the square driving rod is arranged on the hand wheel.

Through adopting above-mentioned technical scheme, when using the hand wheel to rotate the actuating lever, make the square cover card on the hand wheel establish the one end that deviates from the driving gear at the actuating lever, realized being connected of hand wheel and actuating lever, rotate the hand wheel and can drive the actuating lever and rotate, when not using the hand wheel, remove the actuating lever with the hand wheel, can prevent the maloperation, and then influence the on-off state of valve plate.

Preferably, one end of the driving rod, which is close to the driving gear, is slidably sleeved with a guide sleeve, and one end of the guide sleeve, which is far away from the driving rod, is fixedly arranged on the valve body.

Through adopting above-mentioned technical scheme, the uide bushing has improved the stability of sliding of actuating lever for a stable orbit of sliding of actuating lever.

Preferably, the lifting frame is arranged as a shell, and the shell covers a driving gear and a driven gear.

Through adopting above-mentioned technical scheme, the crane sets up to the casing, has reduced the loss that external environment produced driving gear and driven gear, has skipped the life of gate valve.

Preferably, the valve body is provided with sealing rings sleeved with the valve rod on two end faces through which the valve rod slides.

Through adopting above-mentioned technical scheme, improved the leakproofness between valve rod and the valve body.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the valve rod is in sliding fit with the valve body, and a control mechanism is arranged, so that the sealing property of the gate valve is improved;

2. through setting up drive assembly and hand wheel, make things convenient for the staff to open and close the gate valve.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a partial cross-sectional view of the overall structure of an embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is an enlarged schematic view of a portion B in fig. 2.

Fig. 5 is a schematic cross-sectional view of a guide sleeve and a drive rod embodying the present embodiment.

Description of reference numerals: 1. a valve body; 11. a feed inlet; 12. a discharge port; 13. a slideway; 2. a valve plate; 3. a control mechanism; 31. a valve stem; 311. a sliding groove; 4. a lifting assembly; 41. a lifting frame; 42. a screw; 43. a threaded sleeve; 5. a drive assembly; 51. a drive rod; 511. a square rod; 52. a driving gear; 53. a driven gear; 6. a hand wheel; 61. a square sleeve; 7. a guide sleeve; 71. a first telescopic sleeve; 72. a second telescopic sleeve; 73. a limiting ring; 74. a baffle ring; 8. and (5) sealing rings.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a gate valve. Referring to fig. 1 and 2, the gate valve includes a valve body 1, a valve plate 2 and a control mechanism 3, a feed port 11 and a discharge port 12 are provided on the valve body 1, the feed port 11 and the discharge port 12 are arranged in a collinear manner, the valve body 1 is provided with flange plates at the feed port 11 and the discharge port 12, the valve plate 2 is disposed in the valve body 1 and is located between the feed port 11 and the discharge port 12, a slide 13 for the valve plate 2 to slide along the direction perpendicular to the axis of the feed port 11 is provided in the valve body 1, and the control mechanism 3 is disposed on the valve body 1 and is used for controlling the slide of the valve plate 2 along the slide 13.

As shown in fig. 2 and fig. 3, the control mechanism 3 includes a valve rod 31, a lifting assembly 4 and a driving assembly 5, the valve rod 31 penetrates through the valve body 1 in a sliding manner along the central axis direction of the slideway 13, one end of the valve rod 31 is fixedly connected with the valve plate 2, the other end of the valve rod 31 extends out of the valve body 1, the valve body 1 is provided with a sealing ring 8 sleeved on the valve rod 31 at two ends where the valve rod 31 passes through, the lifting assembly 4 is arranged outside the valve body 1, the lifting assembly 4 includes a lifting frame 41, a screw rod 42 and a threaded sleeve 43, the lifting frame 41 is arranged as a shell, the lifting frame 41 is fixedly arranged on the valve body 1 and covers the valve rod 31, the screw rod 42 is fixed on the lifting frame 41 opposite to the valve rod 31, the inside of the valve rod 31 is provided with a sliding groove 311 for the screw rod 42 to be inserted in a sliding manner along the axial direction thereof, the screw rod 42 is inserted into the valve rod 31 in a sliding manner, the threaded sleeve 43 is rotatably arranged at one end of the valve rod 31 opposite to the valve plate 2, and the threaded sleeve 43 is in threaded connection with the screw rod 42, and the driving assembly 5 is arranged on the lifting frame 41 and used for controlling the rotation of the threaded sleeve 43.

The driving assembly 5 comprises a driving rod 51, a driving gear 52 and a driven gear 53, the thread of the driving rod 51 passes through the lifting frame 41 and is arranged in parallel with the screw rod 42, one end of the driving rod 51 passes through the lifting frame 41, the other end of the driving rod is abutted against the valve body 1, the driving gear 52 is fixedly arranged on the driving rod 51, the driven gear 53 is fixedly sleeved on the thread sleeve 43, the driving gear 52 is kneaded with the tooth of the driven gear 53, the driving rod 51 is in thread fit with the lifting frame 41 by rotating the driving rod 51 to drive the lifting rod to move along the axial direction of the lifting rod, meanwhile, the driving rod 51 drives the driving gear 52 to rotate, the driving gear 52 drives the driven gear 53 to rotate, the driven gear 53 drives the thread sleeve 43 to rotate, the thread sleeve 43 is in thread connection with the screw rod 42 to drive the valve rod 31 to move along the axial direction of the screw rod 42, so that the driving gear 52 and the driven gear 53 are always kneaded, and the valve rod 31 is driven to move along the axial direction of the slide track 13, thereby realizing the opening and closing functions of the valve plate 2.

As shown in fig. 2 and 4, a hand wheel 6 is arranged at one end of the lifting frame 41 where the driving rod 51 penetrates, a square rod 511 in a square shape is arranged at one end, connected with the hand wheel 6, of the driving rod 51, a square sleeve 61 is arranged on the hand wheel 6, the square sleeve 61 is completely clamped with the square rod 511, when the driving rod 51 needs to be rotated, the hand wheel 6 is installed on the driving rod 51, the square sleeve 61 is clamped with the square rod 511, when the driving rod 51 does not need to be rotated, the hand wheel 6 is moved away from the driving rod 51, misoperation is avoided, and opening and closing of the gate valve are affected.

As shown in fig. 2 and 5, the valve body 1 is provided with the guide sleeve 7 at a position facing the driving rod 51, the guide sleeve 7 includes a first telescopic sleeve 71 and a second telescopic sleeve 72, the first telescopic sleeve 71 is fixed on the valve body 1, the second telescopic sleeve 72 is slidably sleeved in the first telescopic sleeve 71, the driving rod 51 is slidably sleeved in the second telescopic sleeve 72, one end of the driving rod 51 departing from the hand wheel 6 is provided with a limit ring 73, the limit ring 73 is slidably arranged in the second telescopic sleeve 72, one end of the second telescopic sleeve 72 departing from the first telescopic sleeve 71 is provided with a baffle ring 74, and the baffle ring 74 limits the limit ring 73 to slip off the second telescopic sleeve 72.

The implementation principle of a gate valve of the embodiment of the application is as follows: when the gate valve is in a closed state and needs to be opened, the hand wheel 6 is installed on the driving rod 51, the hand wheel 6 is rotated to drive the driving rod 51 to move upwards, and further the valve rod 31 is driven to move upwards until the valve plate 2 completely opens the channel of the valve body 1, and then the hand wheel 6 is moved away; when the gate valve needs to be closed, the hand wheel 6 is installed on the driving rod 51, the hand wheel 6 is rotated reversely, the driving rod 51 is driven to move downwards, the valve rod 31 is driven to move downwards until the valve plate 2 completely closes the channel of the valve body 1, and then the hand wheel 6 is moved away from the driving rod 51.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A gate valve, characterized in that: the valve comprises a valve body (1), wherein a feed inlet (11) and a discharge outlet (12) are formed in the valve body (1), the feed inlet (11) and the discharge outlet (12) are arranged in a collinear manner along the central axis, a valve plate (2) for closing a channel between the feed inlet (11) and the discharge outlet (12) is arranged at the junction of the feed inlet (11) and the discharge outlet (12) in the valve body (1), a slide way (13) for the valve plate (2) to slide in the direction perpendicular to the feed inlet (11) is arranged on the valve body (1), and a control mechanism (3) for controlling the valve plate (2) to slide along the slide way (13) is arranged on the valve body (1);

the control mechanism (3) comprises a valve rod (31) fixedly connected with the valve plate (2) and slidably arranged in the central axis direction of the slide way (13) in a penetrating manner on the valve body (1), and a lifting assembly (4) arranged on the valve body (1) and used for controlling the valve rod (31) to move in the central axis direction of the slide way (13), wherein the lifting assembly (4) is arranged outside the valve body (1);

the lifting assembly (4) comprises a lifting frame (41) fixed on the valve body (1), a screw rod (42) fixedly connected with the lifting frame (41) and slidably penetrating through the valve rod (31), and a threaded sleeve (43) rotatably connected to the valve rod (31) and in threaded connection with the screw rod (42), and a sliding groove (311) for the screw rod (42) to slide along the axial direction of the valve rod (31) is formed in the valve rod (31) along the axial direction of the valve rod (31);

the lifting frame (41) is provided with a driving assembly (5) for driving a threaded sleeve (43) to rotate, the driving assembly (5) comprises a driving rod (51) parallel to a screw rod (42) and threaded through the lifting frame (41), a driving gear (52) coaxially arranged at the lower end of the driving rod (51) and a driven gear (53) coaxially sleeved on the threaded sleeve (43), the driving gear (52) is kneaded with the driven gear (53), and when the driving rod (51) is rotated, the driving gear (52) and the driven gear (53) have the same movement speed along the axial direction of the screw rod (42).

2. A gate valve according to claim 1, characterised in that: and a hand wheel (6) is coaxially arranged at one end of the driving rod (51) departing from the driving gear (52).

3. A gate valve according to claim 2, characterised in that: one end of the driving rod (51) departing from the driving gear (52) is square, and a square sleeve (61) clamped with the square driving rod (51) is arranged on the hand wheel (6).

4. A gate valve according to claim 1, characterised in that: the one end slip cover that actuating lever (51) is close to driving gear (52) is equipped with uide bushing (7), uide bushing (7) deviate from the one end fixed the setting on valve body (1) of actuating lever (51).

5. A gate valve according to claim 1, characterised in that: the lifting frame (41) is arranged as a shell, and the shell is covered with a driving gear (52) and a driven gear (53).

6. A gate valve according to claim 1, characterised in that: the valve body (1) is provided with sealing rings (8) sleeved with the valve rod (31) on two end faces through which the valve rod (31) slides.