CN215371045U

CN215371045U - Flat gate valve

Info

Publication number: CN215371045U
Application number: CN202121630136.2U
Authority: CN
Inventors: 范腓肋; 范德六; 林瑶瑶; 王爱弟; 王靖
Original assignee: Zhejiang Zhonghao Valve Co ltd
Current assignee: Zhejiang Zhonghao Valve Co ltd
Priority date: 2021-07-17
Filing date: 2021-07-17
Publication date: 2021-12-31
Anticipated expiration: 2031-07-17

Abstract

The utility model discloses a flat gate valve which comprises a valve body, a valve cover arranged on the valve body, a valve rod arranged on the valve cover and extending into the valve body, and a gate plate arranged in the valve rod and positioned in the valve body, wherein a sealed valve seat matched with the gate plate is arranged in the valve body, a rack is arranged on the valve rod, the length direction of the rack is parallel to the axial direction of the valve rod, a gear meshed with the rack and a hand wheel used for driving the gear to rotate are arranged on the valve cover, a positioning assembly used for positioning the valve rod and a control member used for controlling the positioning assembly are arranged on the valve cover or the valve body, and when the positioning assembly positions the valve rod, the gate plate is separated from the valve seat and is in an open state. The utility model has the following advantages and effects: the utility model can realize rapid opening and closing operation so as to deal with the emergency situation, thereby improving the universality of the valve.

Description

Flat gate valve

Technical Field

The utility model relates to a valve, in particular to a flat gate valve.

Background

The gate valve is characterized in that an opening and closing part is a gate plate, the moving direction of the gate plate is perpendicular to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. When the gate valve is closed, the sealing surface can be sealed only by medium pressure, namely, the sealing surface of the gate plate is pressed to the valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface, namely, the gate valve is self-sealed.

Current gate valve includes the valve body, sets up in the valve gap of valve body, installs in the valve gap and extends into the valve stem in the valve body and set up in the valve stem and be located the flashboard in the valve body, is equipped with the cooperation flashboard in the valve body and constitutes sealed disk seat, rotates on the valve gap to be provided with the hand wheel that has with valve stem threaded connection. Drive the valve rod through rotating the hand wheel and drive the flashboard and move, because screw-thread fit's mode conversion efficiency is low and operating load is big, lead to the quick start-stop operation that can't realize the gate valve when taking place emergency, very big restriction the commonality of valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flat gate valve which can realize rapid opening and closing operation so as to deal with emergency situations and improve the universality of the valve.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a flat gate valve, includes the valve body, sets up in the valve gap of valve body, installs in the valve gap and stretches into the inside valve rod of valve body and install in the valve rod and be located the flashboard in the valve body, be equipped with the cooperation flashboard in the valve body and constitute sealed disk seat, be equipped with the rack on the valve rod, the length direction of rack parallels with the axial of valve rod, be equipped with on the valve gap with rack toothing's gear and be used for drive gear pivoted hand wheel, be equipped with the locating component who is used for fixing a position the valve rod on valve gap or the valve body and be used for controlling positioning component's control member, work as during locating component location valve rod, the flashboard is in the state of opening with the disk seat separation.

Through adopting above-mentioned technical scheme, the hand wheel drives gear revolve, drives the valve rod upward movement through the cooperation between the gear and the rack between the two to realize the high-efficient operation of opening of valve, rethread control member fixes a position the valve rod with the cooperation between the two of locating component, makes the valve keep in the open mode. When the quick closing operation of the valve is to be realized, the positioning component is controlled by the control component to release the positioning of the valve rod, so that the valve rod and the flashboard can realize the quick closing operation under the action of gravity, and the quick opening and closing operation can be realized under the emergency condition, thereby improving the universality of the valve.

Further setting the following steps: the locating component comprises a locating claw which is rotatably arranged in the valve cover, a locating clamping groove which is arranged on the valve rod and a torsional spring which is used for driving the locating claw to deflect towards one side of the locating clamping groove, and when the locating claw enters the locating clamping groove, the locating claw limits the valve rod to move and enables the flashboard and the valve seat to be separated and located in an opening state.

By adopting the technical scheme, when the positioning clamping groove moves to the position corresponding to the positioning clamping jaw along with the valve rod, the positioning clamping jaw enters the positioning clamping groove under the action of the torsional spring and is matched with the positioning clamping groove to position the valve rod, so that the valve rod does not move and the valve is kept in a state of being opened all the time.

Further setting the following steps: including setting up in the through-hole of valve gap and installing in the main shaft of through-hole, the positioning claw rotate and set up in the main shaft, torsional spring coupling main shaft and positioning claw, the through-hole is the slope setting downwards along valve rod one side dorsad gradually, the through-hole forms a first position that is located the top and is located the second position of first position below, the main shaft slides between first position and second position, works as when the positioning claw is located the first position, positioning claw cooperation positioning groove makes flashboard and disk seat separation be in the open mode, works as when the positioning claw is in the second position, positioning claw and positioning groove separation.

Through adopting above-mentioned technical scheme, when the main shaft slided to the primary importance from the second place, the location jack catch supported tightly in the valve rod periphery wall under the effect of torsional spring to hold the kinetic energy that deflects towards valve rod one side, when the location draw-in groove removed the position that corresponds to the location jack catch, the location jack catch got into the location draw-in groove under the effect of torsional spring and constitutes the location to the valve rod. When the positioning of the valve rod is to be released, the main shaft moves from the first position to the second position so as to drive the positioning claw to leave the positioning clamping groove. The through hole is arranged in a mode of inclining downwards, so that the positioning clamping jaw does not need to overcome the abutting force between the positioning clamping jaw and the positioning clamping jaw when being separated from the positioning clamping groove, and the separation operation between the positioning clamping jaw and the positioning clamping jaw becomes lighter and more convenient.

Further setting the following steps: the control component comprises a sliding sleeve, a positioning groove and a locking component, wherein the sliding sleeve is sleeved on the valve cover in a sliding mode, the positioning groove is formed in the sliding sleeve and is used for allowing the spindle to enter, the locking component is used for connecting the sliding sleeve and the valve cover, and when the locking component is in a locking state, the spindle is located in the positioning groove and limits the spindle to be located at a first position.

Through adopting above-mentioned technical scheme, remove the main shaft and control the sliding sleeve, make the main shaft be located constant head tank and primary importance in step, then realize the locking through the locking Assembly. When the locking assembly is unlocked, the main shaft moves from the first position to the second position under the action of gravity and drives the sliding sleeve to slide downwards to be separated from the positioning groove, so that the sliding sleeve cannot interfere with the movement of the main shaft, and the reliability of the structure action is ensured.

Further setting the following steps: the locking assembly comprises a first convex ring arranged on the sliding sleeve, a second convex ring arranged on the valve cover and positioned above the first convex ring, and a quick-mounting clamp connected with the first convex ring and the second convex ring and used for limiting sliding of the sliding sleeve.

Through adopting above-mentioned technical scheme, the cooperation between first bulge loop, second bulge loop and the quick clamp three constitutes the locking to the sliding sleeve, and the constant head tank on the rethread sliding sleeve constitutes the location to the main shaft to this reaches the control action to the location jack catch.

In conclusion, the utility model has the following beneficial effects: the utility model can realize rapid opening and closing operation so as to deal with the emergency situation, thereby improving the universality of the valve.

Drawings

FIG. 1 is a sectional view of the embodiment;

FIG. 2 is a partial schematic structural view of an embodiment;

FIG. 3 is a partial state diagram of the first embodiment;

FIG. 4 is a partial state diagram of the second embodiment;

fig. 5 is a partial sectional view of the embodiment.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. a shutter plate; 5. a valve seat; 6. a rack; 7. a gear; 8. a hand wheel; 9. a positioning assembly; 91. positioning the clamping jaw; 92. positioning the clamping groove; 10. a through hole; 11. a main shaft; 12. a sliding sleeve; 13. positioning a groove; 15. a locking assembly; 151. a first convex ring; 152. a second convex ring; 153. quickly mounting a clamp; 16. an elastic buffer block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 5, a flat gate valve includes a valve body 1, a valve cover 2 fixedly disposed on the valve body 1, a valve rod 3 mounted on the valve cover 2 and extending into the valve body 1, and a gate plate 4 fixedly mounted on the valve rod 3 and located in the valve body 1, wherein a valve seat 5 matched with the gate plate 4 to form a seal is disposed in the valve body 1. A rack 6 is integrally arranged on the valve rod 3, the length direction of the rack 6 is parallel to the axial direction of the valve rod 3, a gear 7 meshed with the rack 6 and a hand wheel 8 used for driving the gear 7 to rotate are arranged in the valve cover 2 through a rotating shaft, and the hand wheel 8 is fixedly connected with the rotating shaft, fixedly connected with the gear 7 through the rotating shaft and rotationally matched with the valve cover 2 through the rotating shaft.

The valve cap 2 is provided with a positioning assembly 9 for positioning the valve rod 3 and a control component for controlling the positioning assembly 9, and when the positioning assembly 9 positions the valve rod 3, the flashboard 4 is separated from the valve seat 5 and is in an opening state. The valve cover 2 is provided with a through hole 10, a main shaft 11 is arranged in the through hole 10, and the axial direction of the through hole 10 is mutually vertical to the axial direction of the valve rod 3. The positioning assembly 9 includes a positioning claw 91 rotatably disposed on the main shaft 11 and located in the valve cap 2, a positioning slot 92 formed in the outer peripheral wall of the valve rod 3 and facing away from one side of the rack 6, and a torsion spring (not shown in the figure) for driving the positioning claw 91 to deflect toward one side of the positioning slot 92, wherein the torsion spring is sleeved on the main shaft 11, and one end of the torsion spring is fixedly connected to the positioning claw 91 while the other end is fixedly connected to the main shaft 11.

The through hole 10 extends along one side back to the valve rod 3 and is inclined downwards gradually, the through hole 10 forms a first position located above and a second position located obliquely below the first position, and the main shaft 11 slides between the first position and the second position. When the positioning claw 91 is located at the first position, the positioning claw 91 is matched with the positioning clamping groove 92 to separate the gate plate 4 from the valve seat 5 and enable the gate plate to be in an opening state; when the positioning claws 91 are at the second position, the positioning claws 91 are separated from the positioning click grooves 92.

The control component comprises a sliding sleeve 12 which is sleeved on the valve cover 2 in a sliding manner, a positioning groove 13 which is arranged on the sliding sleeve 12 and is used for the main shaft 11 to enter, and a locking assembly 15 which is used for connecting the sliding sleeve 12 and the valve cover 2, wherein when the locking assembly 15 is in a locking state, the main shaft 11 is positioned in the positioning groove 13 and limits the main shaft 11 to be in a first position. The locking assembly 15 includes a first protruding ring 151 integrally disposed on the sliding sleeve 12, a second protruding ring 152 integrally disposed on the valve cover 2 and located above the first protruding ring 151, and a quick-assembly clamp 153 connecting the first protruding ring 151 and the second protruding ring 152 for limiting the sliding of the sliding sleeve 12. An elastic buffer block 16 is fixedly arranged in the valve body 1 and is positioned right below the gate plate 4, and the elastic buffer block 16 is made of rubber.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a flat gate valve, includes valve body (1), sets up in valve gap (2) of valve body (1), installs in valve gap (2) and stretch into valve rod (3) of valve body (1) inside and install in valve rod (3) and be located flashboard (4) of valve body (1), be equipped with in valve body (1) cooperation flashboard (4) and constitute sealed disk seat (5), its characterized in that: be equipped with rack (6) on valve rod (3), the length direction of rack (6) parallels with the axial of valve rod (3), be equipped with on valve gap (2) with gear (7) of rack (6) meshing and be used for driving gear (7) pivoted hand wheel (8), be equipped with on valve gap (2) or valve body (1) and be used for fixing a position locating component (9) of valve rod (3) and be used for controlling the control member of locating component (9), work as during locating component (9) location valve rod (3), flashboard (4) are in the state of opening with disk seat (5) separation.

2. The flat gate valve of claim 1, wherein: locating component (9) including rotate set up locating claw (91) in valve gap (2), set up in locating groove (92) of valve rod (3) and be used for driving locating claw (91) towards the torsional spring of locating groove (92) one side deflection, work as when locating claw (91) gets into locating groove (92), locating claw (91) restriction valve rod (3) motion makes flashboard (4) and disk seat (5) separation be in the open mode.

3. The flat gate valve of claim 2, wherein: comprises a through hole (10) arranged on a valve cover (2) and a main shaft (11) arranged on the through hole (10), the positioning claw (91) is rotationally arranged on the main shaft (11), the torsion spring is connected with the main shaft (11) and the positioning claw (91), the through hole (10) extends along one side back to the valve rod (3) and is gradually arranged in an inclined way downwards, the through hole (10) forms a first position above and a second position below the first position, the spindle (11) slides between the first position and the second position, when the positioning claw (91) is positioned at the first position, the positioning claw (91) is matched with the positioning clamping groove (92) to separate the flashboard (4) from the valve seat (5) and be in an opening state, when the positioning claw (91) is at the second position, the positioning claw (91) is separated from the positioning clamping groove (92).

4. The flat gate valve of claim 3, wherein: the control component comprises a sliding sleeve (12) which is slidably sleeved on the valve cover (2), a positioning groove (13) which is arranged on the sliding sleeve (12) and is used for the main shaft (11) to enter, and a locking component (15) which is used for connecting the sliding sleeve (12) and the valve cover (2), wherein when the locking component (15) is in a locking state, the main shaft (11) is positioned in the positioning groove (13) and limits the main shaft (11) to be positioned at a first position.

5. The flat gate valve of claim 4, wherein: the locking assembly (15) comprises a first convex ring (151) arranged on the sliding sleeve (12), a second convex ring (152) arranged on the valve cover (2) and positioned above the first convex ring (151), and a quick-assembling clamp (153) connected with the first convex ring (151) and the second convex ring (152) and used for limiting the sliding of the sliding sleeve (12).