CN219588142U - Low-torque double-seal gate valve - Google Patents

Abstract

The utility model relates to the technical field of gate valves and discloses a low-torque double-seal gate valve which comprises a valve body, a channel, a valve rod, a hand wheel and a gate plate, wherein the top of the valve body is fixedly connected with a valve cover, the outer wall of the valve rod is fixedly connected with a connecting sleeve, the outer wall of the connecting sleeve is fixedly connected with a clamping block, one side of the clamping block is provided with a clamping groove, the inner wall of the clamping groove is fixedly connected with a fastening layer, the inner wall of the clamping groove is movably connected with an indicating bolt, the outer wall of the valve cover is provided with a movable groove, the outer wall of the valve cover is fixedly connected with a limiting block, and one side of the limiting block is provided with a through groove. This low moment of torsion dual seal gate valve can be when opening and shutting the gate valve the person of facilitating the use judge the concrete positional information when flashboard is sealed to it is convenient to bring for operator's work, avoids can't judge when the switch valve body and causes the unchangeable condition of use, and has effectively improved the effect of use, has further satisfied the user demand.

Description

Low-torque double-seal gate valve

Technical Field

The utility model relates to the technical field of gate valves, in particular to a low-torque double-seal gate valve.

Background

The gate valve is opened and closed vertically to the fluid direction, and has two sealing surfaces, and the two sealing surfaces form wedge with different wedge angle.

In Chinese patent utility model, for example: CN208793673U, a soft sealing gate valve, comprising a valve body, be provided with the valve gap on the valve body, be provided with the through-hole on the valve gap, be provided with the valve rod in the through-hole, the valve rod bottom is connected with the flashboard, be provided with the hand wheel behind the valve rod top worn out the valve gap, the flashboard includes the skeleton, the skeleton cladding has the rubber layer outward, both sides are provided with first sealing portion around flashboard upper portion, the sealing port department of valve body be provided with the second sealing portion of first sealing portion looks adaptation, the lower terminal surface of first sealing portion with the up end cooperation of second sealing portion is sealed; the utility model has reasonable and compact structure, effectively solves the problems of large opening and closing torque, high cost, short service life, low safety performance, weak sealing effect and the like of the existing gate valve, protects parts, prolongs the service life of the valve and meets the use requirements of vast users.

The following problems exist in the prior art:

1. when the gate valve is opened and closed, the valve rod is of a hidden rod structure, so that specific position information of the gate plate during sealing is difficult to judge during operation, and great inconvenience is brought to operators;

2. when the gate valve is in use, the gate sealing surface and the valve body are in sealing direct contact and sealing, so that the gate is easy to deform under stress, the guiding sealing effect is low, and leakage is generated.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a low-torque double-seal gate valve, which has the advantages of convenient use and the like and solves the problems in the prior art.

(II) technical scheme

In order to achieve the purpose of convenient use, the utility model provides the following technical scheme: the utility model provides a low moment of torsion dual seal gate valve, includes valve body, passageway, valve rod, hand wheel and flashboard, the top fixedly connected with valve gap of valve body, the outer wall fixedly connected with adapter sleeve of valve rod, the outer wall fixedly connected with fixture block of adapter sleeve.

Clamping grooves are formed in one side of the clamping block, a fastening layer is fixedly connected to the inner wall of the clamping groove, an indication bolt is movably connected to the inner wall of the clamping groove, a movable groove is formed in the outer wall of the valve cover, a limiting block is fixedly connected to the outer wall of the valve cover, a through groove is formed in one side of the limiting block, a user can judge specific position information when the flashboard is sealed when the gate valve is opened or closed, convenience is brought to the work of the operator, the situation that the use is unchanged due to the fact that the user cannot be judged when the valve body is opened or closed is avoided, the use effect is effectively improved, and the use requirement is further met.

Preferably, one side fixedly connected with sealed pad of flashboard, the opposite side fixedly connected with of flashboard supports the piece, the recess has been seted up to the inner wall of passageway, the inner wall fixedly connected with seal cover of passageway, and the seal cover is the rubber seal cover, can improve the leakproofness between flashboard and the seal cover, and improved the internal sealed effect of valve simultaneously, avoid the flashboard directly to contact with the sealed department and seal and make the condition that the flashboard atress is too big cause deformation, and reduce the emergence of leakage.

Preferably, the inner wall fixedly connected with connecting block of passageway, and the outer wall of connecting block and the inner wall swing joint of spread groove can play the fixed effect of connection to the seal cover, prevent that the gliding condition from appearing in the seal cover.

Preferably, the connecting groove is formed in the outer wall of the sealing sleeve, the protruding blocks are fixedly connected to the inner wall of the sealing sleeve, and the sealing sleeve can be tightly attached during sealing, so that leakage is reduced.

Preferably, the bottom of flashboard and the inner wall swing joint of recess, and the flashboard passes through recess and passageway swing joint, can carry out spacingly to the flashboard to avoid the excessive formation of flashboard atress, and play fine sealed effect simultaneously.

Preferably, the outer wall of the indication bolt is movably connected with the inner wall of the movable groove and the inner wall of the through groove respectively, and the indication bolt is movably connected with the clamping block through the movable groove and the through groove respectively, so that a user can know the opening and closing condition in the valve body conveniently.

Preferably, the inner wall of the connecting sleeve is fixedly connected with the outer wall of the valve rod, and the outer wall of the connecting sleeve is movably connected with the inner wall of the valve cover, so that the connecting sleeve can move simultaneously when the valve rod moves.

(III) beneficial effects

Compared with the prior art, the utility model provides a low-torque double-seal gate valve, which has the following beneficial effects:

1. this low-torque double seal gate valve through adapter sleeve, fixture block, draw-in groove, fastening layer, instruction bolt, movable groove, stopper and logical groove, can be when the gate valve switch the person of facilitating the use judge the concrete positional information when flashboard is sealed to it is convenient to bring for operator's work, avoids can't judge when switching valve body and causes the unchangeable condition of use, and has effectively improved the effect of use, has further satisfied the user demand.

2. This low-torque double seal gate valve through sealed pad, support piece, recess, seal cover and lug, can improve the leakproofness between flashboard and the seal cover, and improved the internal sealed effect of valve simultaneously, avoid the flashboard directly to contact with the sealing department and seal and make the condition that the flashboard atress is too big cause deformation, and reduce the leakage and take place.

Drawings

FIG. 1 is a schematic view of the present utility model in a front cross-section;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is an enlarged view of the utility model at A in FIG. 1;

figure 4 is a schematic structural view of a sealing sleeve according to the utility model;

fig. 5 is a schematic diagram of a latch structure according to the present utility model.

In the figure: 1. a valve body; 2. a channel; 3. a valve cover; 4. a valve stem; 5. a hand wheel; 6. connecting sleeves; 7. a clamping block; 8. a clamping groove; 9. a fastening layer; 10. an indication bolt; 11. a movable groove; 12. a limiting block; 13. a through groove; 14. a flashboard; 15. a sealing gasket; 16. abutting blocks; 17. a groove; 18. sealing sleeve; 19. a connecting block; 20. a connecting groove; 21. and a bump.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

The preferred embodiments of the low torque double seal gate valve provided by the present utility model are shown in fig. 1 to 5: the utility model provides a low-torque double seal gate valve, includes valve body 1, passageway 2, valve rod 4, hand wheel 5 and flashboard 14, and the top fixedly connected with valve gap 3 of valve body 1, the outer wall fixedly connected with adapter sleeve 6 of valve rod 4, the outer wall fixedly connected with fixture block 7 of adapter sleeve 6.

Clamping groove 8 has been seted up to one side of fixture block 7, clamping groove 8's inner wall fixedly connected with fastening layer 9, clamping groove 8's inner wall swing joint has instruction bolt 10, movable groove 11 has been seted up to the outer wall of valve gap 3, the outer wall fixedly connected with stopper 12 of valve gap 3, logical groove 13 has been seted up to one side of stopper 12, can be when the gate valve switch the person of facilitating the use judges the concrete positional information when flashboard 14 is sealed, thereby it is convenient to bring for operator's work, avoid can't judge when the switch valve body and cause the unchangeable condition of use, and effectively improved the effect of use, further satisfied the user demand.

In this embodiment, the sealed 15 that fills up of one side fixedly connected with of flashboard 14, the opposite side fixedly connected with of flashboard 14 supports piece 16, and recess 17 is seted up to the inner wall of passageway 2, and the inner wall fixedly connected with seal cover 18 of passageway 2, and seal cover 18 is the rubber seal cover, can improve the leakproofness between flashboard 14 and the seal cover 18, and improved the sealed effect in the valve body 1 simultaneously, avoid flashboard 14 direct and sealed department contact seal to make the condition that the atress of flashboard 14 is too big cause deformation, and reduce the leakage emergence.

Example 2

On the basis of embodiment 1, a preferred embodiment of the low-torque double seal gate valve provided by the present utility model is shown in fig. 1 to 5: the inner wall fixedly connected with connecting block 19 of passageway 2, and the outer wall of connecting block 19 and the inner wall swing joint of spread groove 20 can play the fixed effect of connection to seal cover 18, prevent that seal cover 18 from appearing the gliding condition.

In this embodiment, the outer wall of the sealing sleeve 18 is provided with the connecting groove 20, and the inner wall of the sealing sleeve 18 is fixedly connected with the protruding block 21, which can play a role in close fitting during sealing, thereby reducing leakage.

Further, the bottom of the flashboard 14 is movably connected with the inner wall of the groove 17, and the flashboard 14 is movably connected with the channel 2 through the groove 17, so that the flashboard 14 can be limited, the oversized stress of the flashboard 14 is avoided, and a good sealing effect is achieved.

Furthermore, the outer wall of the indication bolt 10 is movably connected with the inner wall of the movable groove 11 and the inner wall of the through groove 13, and the indication bolt 10 is movably connected with the clamping block 7 through the movable groove 11 and the through groove 13, so that a user can know the opening and closing condition of the valve body 1.

Besides, the inner wall of the connecting sleeve 6 is fixedly connected with the outer wall of the valve rod 4, and the outer wall of the connecting sleeve 6 is movably connected with the inner wall of the valve cover 3, so that the valve rod 4 can move simultaneously when moving.

When the valve rod sealing device is used, the indicating bolt 10 is inserted into the clamping groove 8 on the clamping block 7, the indicating bolt is firmly installed in the clamping block 7 through the matching of the fastening layer 9, when the hand wheel 5 is rotated to enable the valve rod 4 to move, the connecting sleeve 6 on the outer wall of the valve rod 4 is simultaneously moved, and the indicating bolt 10 is simultaneously driven to move in the movable groove 11 and the through groove 13 respectively, so that a user can know the closing position of the flashboard 14 conveniently, meanwhile, when the flashboard 14 is in sealing contact with the valve body 1, the sealing gasket 15 on one side is in contact with the sealing sleeve 18, the bottom of the flashboard 14 is clamped into the groove 17, the flashboard 14 is limited by the abutting block 16, the flashboard 14 can be enabled to stably play a sealing role, deformation caused by overlarge stress of the flashboard 14 is avoided, and the flashboard 14 is enabled to be tightly connected with the valve body 1.

In summary, this low-torque double seal gate valve can be when opening and shutting the gate valve, the person of facilitating the use judges the concrete positional information when flashboard 14 seals to it is convenient to bring for operator's work, avoid can't judge when opening and shutting the valve body and cause the unchangeable condition of use, can improve the leakproofness between flashboard 14 and seal cover 18 simultaneously, and improved the sealed effect in the valve body 1 simultaneously, avoid flashboard 14 direct and sealed department contact seal to make flashboard 14 atress too big circumstances that cause deformation, and reduce the leakage emergence.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a low-torque double seal gate valve, includes valve body (1), passageway (2), valve rod (4), hand wheel (5) and flashboard (14), its characterized in that: the top of the valve body (1) is fixedly connected with a valve cover (3), the outer wall of the valve rod (4) is fixedly connected with a connecting sleeve (6), and the outer wall of the connecting sleeve (6) is fixedly connected with a clamping block (7);

clamping groove (8) have been seted up to one side of fixture block (7), the inner wall fixedly connected with fastening layer (9) of clamping groove (8), the inner wall swing joint of clamping groove (8) has instruction bolt (10), movable groove (11) have been seted up to the outer wall of valve gap (3), the outer wall fixedly connected with stopper (12) of valve gap (3), logical groove (13) have been seted up to one side of stopper (12).

2. A low torque double seal gate valve as defined in claim 1 wherein: one side fixedly connected with sealed pad (15) of flashboard (14), the opposite side fixedly connected with of flashboard (14) supports piece (16), recess (17) are seted up to the inner wall of passageway (2), the inner wall fixedly connected with seal cover (18) of passageway (2), and seal cover (18) are rubber seal cover.

3. A low torque double seal gate valve as defined in claim 1 wherein: the inner wall of the channel (2) is fixedly connected with a connecting block (19), and the outer wall of the connecting block (19) is movably connected with the inner wall of the connecting groove (20).

4. A low torque double seal gate valve according to claim 2, wherein: the outer wall of the sealing sleeve (18) is provided with a connecting groove (20), and the inner wall of the sealing sleeve (18) is fixedly connected with a bump (21).

5. A low torque double seal gate valve as defined in claim 1 wherein: the bottom of the flashboard (14) is movably connected with the inner wall of the groove (17), and the flashboard (14) is movably connected with the channel (2) through the groove (17).

6. A low torque double seal gate valve as defined in claim 1 wherein: the outer wall of the indication bolt (10) is movably connected with the inner wall of the movable groove (11) and the inner wall of the through groove (13) respectively, and the indication bolt (10) is movably connected with the clamping block (7) through the movable groove (11) and the through groove (13) respectively.

7. A low torque double seal gate valve as defined in claim 1 wherein: the inner wall of the connecting sleeve (6) is fixedly connected with the outer wall of the valve rod (4), and the outer wall of the connecting sleeve (6) is movably connected with the inner wall of the valve cover (3).