CN218118667U - Novel labor-saving opening and closing flat gate valve - Google Patents

Abstract

The utility model discloses a new-type laborsaving flat gate valve of opening and close, which comprises a valve body, it has the runner to open in the valve body, valve body department is equipped with the flashboard, it has last intercommunication chamber and lower intercommunication chamber to open on the valve body, the left and right both sides of flashboard all are equipped with the disk seat, all install first O type circle on the two disk seats, all be equipped with the sealing washer on the opposite face of two disk seats, all be equipped with triangle rubber seal on the opposite face of two disk seats, the lateral part of two disk seats all is provided with compression spring, the centre of flashboard is opened there is the grafting passageway, be fixed with the riser on the intercommunication chamber down, open on the top of riser has the horizontal water conservancy diversion hole of second, the horizontal water conservancy diversion hole of second left and right side all is fixed with the stereoplasm alloy layer, the outside of stereoplasm alloy layer is equipped with the second O type circle of installing on the riser, the utility model discloses structural design is ingenious, reasonable, can transversely support the flashboard, thereby move laborsaving sealing washer down, little to the sealing washer, triangle rubber seal pressure, thereby it is little to wear, need not often to change, with low costs, be worth popularizing and applying.

Description

Novel labor-saving opening and closing flat gate valve

Technical Field

The utility model relates to a high-end device, especially an opening and closing member, especially a new-type laborsaving flat gate valve of opening and close.

Background

The flat gate valve is a sliding valve with a closing member being a parallel gate plate, the movement direction of the gate plate is perpendicular to the movement direction of fluid, the sealing ring of the pressure surface of the gate plate is easy to open the gate plate or move down to reset the gate plate due to the upward movement of the sealing ring and the gate plate under the condition of high-pressure friction force in the existing gate valve under the environment of high-pressure medium, the sealing ring is high in friction resistance, the gate plate is not easy to open and close, the situation that the sealing surface is abraded too fast and the sealing ring needs to be replaced frequently (as shown in figure 8) is easy to occur, the gate plate is easy to deform under the pressure condition of high-pressure medium pressure, the closing operation of the gate plate is disturbed, sometimes, the gate plate is large in deformation and cannot be normally closed in place, and therefore the medium leakage is caused.

The Chinese utility model patent CN 206338432U discloses a double-sealing flat gate valve, which comprises a valve body, a valve rod and an operating mechanism, wherein the valve body is provided with a valve cover, a valve seat is also arranged in the valve body, the front end of the valve rod is provided with a flashboard, the middle of the valve body is provided with a flow passage, the upper part and the lower part of the flow passage are respectively provided with an upper cavity and a lower cavity, the valve seat comprises a main valve seat, the main valve seat is in sealing fit with the flashboard, the bottom of the main valve seat is also provided with a secondary valve seat, the secondary valve seat is positioned between the flashboard and the valve body, an elastic part is also arranged between the secondary valve seat and the valve body, and the secondary valve seat is in sealing fit with the flashboard; this kind of double seal plate valve when receiving high-pressure medium impact, can lead to the fact strong extrusion force to the sealing washer that receives the face to when the flashboard moves from top to bottom, the resistance is big, also big, the sealing washer needs frequent change to the wearing and tearing of sealing washer, not only the flashboard is opened and close the difficulty, use cost is high moreover.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve above-mentioned prior art's shortcoming, provide one kind and can use under high pressure medium environment, the flashboard is opened and close laborsavingly and can not cause the sealing washer of compression face easy wearing and tearing seriously and the high pressure medium that flows on a left side strikes or the high pressure medium that flows on the right side strikes a new-type laborsaving flat gate valve of opening and close that can both use, it is laborsaving to have satisfied that the flashboard is opened and close under the high pressure medium environment laborsavingly, sealing washer wearing and tearing are little, flat gate valve long service life, the demand that maintenance cost is low.

The utility model provides a technical scheme that its technical problem adopted: the utility model provides a novel laborsaving flat gate valve of opening and close, the valve body, the interior runner that has of valve body, valve body department installs the flashboard that is used for the runner to open and close, it has last intercommunication chamber and lower intercommunication chamber with the runner intercommunication to open on the valve body, the left and right both sides of flashboard all are equipped with the disk seat of pegging graft on the valve body, all install the first O type circle with valve body complex on two disk seats, all install the laminating on the opposite face of two disk seats at the flashboard left side, the sealing washer on the right plane, all install the laminating on the opposite face of two disk seats at the flashboard left side, the triangle rubber seal that is located the sealing washer top on the right plane, the lateral part of two disk seats all is provided with the compression spring that is used for sealing washer and triangle rubber seal to press on the flashboard, the centre of flashboard is opened there is the grafting passageway, be fixed with the riser of pegging graft in grafting passageway department on the lower intercommunication chamber, open the top of riser has the second horizontal water conservancy diversion hole unanimous with the flow path size, the left side of second horizontal water conservancy diversion hole that the water conservancy diversion hole all is fixed with the edge and is fixed with the worm wheel that the grafting was installed on the valve rod, the box body, the box top of the fixed screw rod that the box top of the box that the grafting was connected with the worm wheel that the worm wheel was connected with the worm wheel that the fixed on the valve rod, the box was connected with the box top of the box was connected with the worm wheel that the box was connected with the worm on the box body, the box that the worm wheel that the fixed on the bottom of pegging, the worm wheel that the worm wheel was connected with the worm wheel that the worm wheel was connected with the box body, the fixed on the box body, the worm wheel that the worm wheel was connected with the worm wheel top of pegging graft. The hard alloy layer is made of tungsten carbide or titanium carbide materials which are available on the market. The valve body, the flow channel and the flashboard have the functions of releasing and blocking the medium; the valve seat, the sealing ring, the triangular rubber sealing ring and the compression spring have the effects that the left side face of the gate plate can be sealed, the sealing ring and the triangular rubber sealing ring are used for double sealing, the sealing effect is better, the compression spring has the function of a sealing surface abrasion compensation position, and the service lives of the sealing ring and the triangular rubber sealing ring can be prolonged; the first transverse diversion hole has the effects that when the flashboard ascends, the medium can flow out through the first transverse diversion hole, and the bottom of the flashboard can be supported on the valve seat, so that the deformation degree of the flashboard caused by the pressure of the medium is greatly reduced, and the stability of the flashboard in the process of moving up and down is improved (as shown in fig. 7); the inserting channel and the vertical plate have the functions of supporting the flashboard in a transverse medium pressure resisting mode, so that the flashboard is prevented from deforming under the high-pressure medium environment; the hard alloy layer plays a role in sealing when the flashboard is opened or closed, and the hard alloy layer is made of the existing tungsten carbide or titanium carbide material on the market and has strong wear resistance; the second O-shaped ring has the effects that the double sealing effect can be further achieved, special conditions are avoided, for example, fine impurities are clamped between the flashboard and the hard sealing alloy layer due to the fact that the medium contains more impurities, so that a fine gap is generated between the flashboard and the hard sealing alloy layer, slight leakage can be avoided due to the fact that the second O-shaped ring is capable of avoiding the occurrence of the fine leakage, due to the fact that most of medium pressure acts on the hard sealing alloy layer, the pressure of the flashboard on the second O-shaped ring is small, abrasion of the second O-shaped ring caused by up-and-down movement of the flashboard is relatively small, and the second O-shaped ring can be used for a long time; the inserting holes and the inserting rods have the effects that the tops of the vertical plates are supported and transversely supported, so that the vertical plates are more stable in the longitudinal direction, the flashboards can resist transverse force in the transverse direction, and the flashboards cannot be bent; the effect of transmission box, worm wheel, worm, threaded rod, hand round here is, can drive the worm through hand round and rotate to the worm drives the worm wheel and rotates, and the worm wheel rotates can move about the threaded rod in step, thereby the operation of opening and close of driving plate gate valve that can be laborsaving, because the worm wheel and worm has one-way auto-lock nature, so can only hand round control plate gate valve open and close, can not make the flashboard owing to receive the medium impact and take place the removal condition.

Further perfect, be fixed with on the valve rod and be used for the flashboard to move spacing stopper down, go up the top in intercommunication chamber and be fixed with and be used for the flashboard to shift up spacing kicking block. The limiting block has the advantages that the upper movement limit position of the flashboard can be conveniently controlled, and therefore the opening of the flat gate valve is conveniently controlled; the function of the top block is that the lower movement limit position of the flashboard can be conveniently controlled, and therefore the closing of the flat gate valve is conveniently controlled.

Further perfecting, open on the stopper and have a set of installation through-hole that sets up along stopper center equipartition, all install on each installation through-hole and be fixed with self-lubricating bearing cover, go up the intercommunication chamber and be fixed with a set of guide post pole of pegging graft respectively in lubricated bearing cover department separately. Here the effect of mounting hole, self-lubricating bearing cover, guide post pole is, can give the further horizontal holding power of flashboard, avoid the flashboard to receive horizontal medium high pressure effect and take place slight bending, also further avoid the flashboard to receive horizontal medium pressure effect and take place to press the sealing washer and the triangle rubber seal department of excessive pressure at flashboard atress face side to can very big reduction flashboard atress face side's sealing washer and triangle rubber seal wearing and tearing, increase plate gate valve's life.

The utility model discloses profitable effect is: the utility model has the advantages of ingenious and reasonable structural design, the flashboard is used for opening and closing the flow passage, the valve seat, the sealing ring, the triangular rubber sealing ring and the compression spring can play a double sealing function to the flashboard to avoid the medium from leaking out of the flashboard, and the compression spring has the function of a sealing surface abrasion compensation position, when the first transverse diversion hole is used for the flashboard to ascend, the medium can flow out through the first transverse diversion hole, and the bottom of the flashboard can be supported, thereby greatly reducing the possibility of the deformation of the flashboard, the flashboard can be transversely supported by the splicing channel, the vertical plate, the second transverse diversion hole, the hard alloy layer, the second O-shaped ring, the splicing hole and the inserted bar, so that the flashboard is under the high-pressure medium environment, the deformation is not generated, the pressure to the sealing ring of the pressure surface and the triangular rubber sealing ring is small, so that the abrasion is small when the flashboard moves up and down, the service life is long, the cost is low, the flashboard can be supported by the medium flowing in two directions, the valve rod can be easily driven to move up and down by utilizing the transmission box body, the worm wheel, the worm and the hand wheel, thereby the operation is opened and close to the pipeline of laborsaving removal about the drive flashboard that can one-way auto-lock, the utility model discloses structural design is ingenious, reasonable, can transversely support the flashboard to it is laborsaving, little to sealing washer, triangle rubber seal circle pressure, thereby wearing and tearing are little, need not for a long time to change, with low costs to move the flashboard up and down, is worth popularizing and applying.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a partially enlarged view of the area A of FIG. 1;

FIG. 3 is a schematic view of the structure of the valve seat area of the present invention;

FIG. 4 is a schematic structural view of the transmission case region of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is a schematic structural view of the middle gate of the present invention when it is used laterally;

FIG. 7 is a flow chart illustrating the operation of the present invention;

fig. 8 is a schematic structural view of a conventional flat gate valve when the gate plate is pressed against the pressure face seal ring by high medium pressure. Description of reference numerals: the device comprises a valve body 1, a flow channel 1-1, an upper communicating cavity 1-2, a top block 1-2a, a lower communicating cavity 1-3, a flashboard 2, an inserting channel 2-1, a first transverse flow guiding hole 2-2, a valve seat 3, a sealing ring 4, a triangular rubber sealing ring 5, a compression spring 6, a vertical plate 7, a second transverse flow guiding hole 7-1, a hard alloy layer 7-2, an inserting rod 7-3, a second O-shaped ring 8, a valve rod 9, an inserting hole 9-1, a threaded rod 9-2, a transmission box body 10, a worm wheel 11, a worm 12, a hand wheel 13, a limiting block 14, an installation through hole 14-1, a self-lubricating bearing sleeve 15, a guiding column rod 16, a tubular column 17, a bearing with a seat 18 and a traditional sealing ring 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

With reference to the accompanying drawings: the novel labor-saving opening and closing flat gate valve comprises a valve body 1, wherein a flow passage 1-1 is formed in the valve body 1, a flashboard 2 used for opening and closing the flow passage 1-1 is installed at the position of the valve body 1, an upper communicating cavity 1-2 and a lower communicating cavity 1-3 communicated with the flow passage 1-1 are formed in the valve body 1, valve seats 3 inserted on the valve body 1 are respectively arranged on the left side and the right side of the flashboard 2, first O-shaped rings 3-1 matched with the valve body 1 are respectively installed on the two valve seats 3, sealing rings 4 attached on the left plane and the right plane of the flashboard 2 are respectively installed on the opposite surfaces of the two valve seats 3, triangular rubber sealing rings 5 attached on the left plane and the right plane of the flashboard 2 and positioned above the sealing rings 4 are respectively installed on the opposite surfaces of the two valve seats 3, compression springs 6 used for pressing the sealing rings 4 and the triangular rubber sealing rings 5 on the flashboard 2 are respectively arranged on the side parts of the two valve seats 3, the middle of the flashboard 2 is provided with an inserting channel 2-1, the lower communicating cavity 1-3 is fixed with a vertical board 7 inserted in the inserting channel 2-1, the top end of the vertical board 7 is provided with a second transverse diversion hole 7-1 with the same size as the section of the flow channel 1-1, the left and right edges of the second transverse diversion hole 7-1 are both fixed with a hard alloy layer 7-2, the outer sides of the two hard alloy layers 7-2 are both provided with a second O-shaped ring 8 arranged on the vertical board 7, the bottom of the flashboard 2 is provided with a first transverse diversion hole 2-2 which is the same size as the section of the flow channel 1-1 and penetrates through the inserting channel 2-1, the valve body 1 is arranged with a valve rod 9 which drives the flashboard 2 to move up and down, the valve rod 9 is provided with an inserting hole 9-1, the top end of the vertical board 7 is fixed with an inserting rod 7-3 inserted in the inserting hole 9-1, the top end of the valve body 1 is fixed with a transmission box body 10, a bearing 18 with a seat is fixed in the transmission box body 10, a pipe column 17 is fixed at the position of the bearing 18 with the seat, a worm wheel 11 is fixed at the top end of the pipe column 17, a worm 12 matched with the worm wheel 11 is in transmission connection with the transmission box body 10, a threaded rod 9-2 matched with the worm wheel 11 in a threaded mode is fixed on the valve rod 9, a hand-operated wheel 13 is fixed at the outer end of the worm 12, and lubricating oil is injected into the transmission box body 10.

A limiting block 14 used for limiting the movement of the flashboard 2 downwards is fixed on the valve rod 9, and an ejector block 1-2a used for limiting the movement of the flashboard 2 upwards is fixed at the top end of the upper communicating cavity 1-2.

The limiting block 14 is provided with a group of mounting through holes 14-1 which are uniformly distributed along the center of the limiting block 14, each mounting through hole 14-1 is fixedly provided with a self-lubricating bearing sleeve 15, and the upper communication cavity 1-2 is fixedly provided with a group of guide posts 16 which are respectively inserted in the respective lubricating bearing sleeves 15.

The utility model discloses a theory of operation: when the flat gate valve in a high-pressure medium environment is required to be opened, only the hand wheel 13 needs to be rotated, so that the worm 12 is driven to rotate, the worm 12 drives the worm wheel 11 to rotate, the threaded rod 9-2 is in threaded fit with the worm wheel 11, the worm 12 is driven to move upwards under the condition that the worm wheel 11 does not rotate, so that the limit block 14 is driven to move upwards, the limit block 14 moves upwards to synchronously drive the flashboard 2 to move upwards, the vertical board 7 is inserted in the inserting channel 2-1, the bottom of the vertical board 7 is fixed on the valve body 1, and top support is carried out through the inserting rod 7-3 inserted in the inserting hole 9-1, so that the vertical board 7 is very stable when resisting transverse medium impact force, the flashboard 2 cannot deform in the process of continuously lifting the flashboard 2, the limit block 14 is limited by resisting transverse movement of each guide column rod 16, so that the transverse stability of the flashboard 7 is better, and when the first transverse flow guide hole 2-2 on the flashboard 2 moves to the second transverse flow guide hole 7-1, the flat gate valve is in a fully opened state (as shown in a figure 7); when the plate valve under the high pressure medium environment of needs is closed, only need the hand wheel of reverse rotation, thereby drive worm wheel 11 reverse rotation, thereby drive threaded rod 9-2 and move down, thereby drive flashboard 2 and move down until stopper 14 is moved down and is blockked the position, at this moment, plate valve is in the closed condition, because the interior lubricating oil that has annotated of transmission box 10, thereby worm wheel 11 and worm 12 rotating resistance of getting up is little, and it can be more laborsaving to drive flashboard 2 upper and lower removal, the utility model discloses structural design is ingenious, reasonable, can transversely support flashboard 2, thereby moves flashboard 2 laborsaving up and down, and is little to sealing washer 4, triangle rubber seal 5 pressure, thereby wearing and tearing are little, need not to change for a long time, with low costs, is worth popularizing and applying.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims (3)

1. The utility model provides a new-type laborsaving flat gate valve of opening and close, includes valve body (1), it has runner (1-1) to open in valve body (1), valve body (1) department installs flashboard (2) that are used for runner (1-1) to open and close, characterized by: the valve body (1) is provided with an upper communicating cavity (1-2) and a lower communicating cavity (1-3) which are communicated with the flow channel (1-1), the left side and the right side of the flashboard (2) are respectively provided with a valve seat (3) which is inserted and connected on the valve body (1), the two valve seats (3) are respectively provided with a first O-shaped ring (3-1) which is matched with the valve body (1), the opposite surfaces of the two valve seats (3) are respectively provided with a sealing ring (4) which is attached on the left plane and the right plane of the flashboard (2), the opposite surfaces of the two valve seats (3) are respectively provided with a triangular rubber sealing ring (5) which is attached on the left plane and the right plane of the flashboard (2) and is positioned above the sealing ring (4), the lateral parts of the two valve seats (3) are respectively provided with a compression spring (6) which is used for pressing the sealing ring (4) and the triangular rubber sealing ring (5) on the flashboard (2), the middle of the two valve seats (2) is provided with an inserting channel (2-1), the lower communicating cavity (1-3) is fixedly provided with a flow guide hole (7) which is transversely provided with the top end of a second vertical plate (7) and a vertical plate (7) which is transversely provided with a guide hole (7) which is arranged on the top end of the vertical plate (7), the outer side of the hard alloy layer (7-2) is provided with a second O-shaped ring (8) installed on a vertical plate (7), the bottom of the flashboard (2) is provided with a first transverse flow guide hole (2-2) which is consistent with the cross section size of the flow channel (1-1) and penetrates through the plug-in channel (2-1), a valve rod (9) which drives the flashboard (2) to move up and down is installed on the valve body (1), a plug-in hole (9-1) is formed in the valve rod (9), a plug-in rod (7-3) which is plugged in the plug-in hole (9-1) is fixed at the top end of the valve body (1), a transmission box body (10) is fixed at the top end of the valve body (1), a worm wheel (11) is rotationally connected with the transmission box body (10), a worm (12) which is matched with the worm wheel (11) is movably connected to the transmission box body (10), a threaded rod (9-2) which is fixed to the valve rod (9) and is in threaded fit with the worm wheel (11), and a hand-operated wheel (13) is fixed at the outer end of the worm (12).

2. The novel labor-saving opening and closing flat gate valve as claimed in claim 1, which is characterized in that: a limiting block (14) used for limiting the downward movement of the flashboard (2) is fixed on the valve rod (9), and an ejecting block (1-2 a) used for limiting the upward movement of the flashboard (2) is fixed at the top end of the upper communicating cavity (1-2).

3. The novel labor-saving opening and closing flat gate valve as claimed in claim 2, which is characterized in that: the limiting block (14) is provided with a group of mounting through holes (14-1) which are uniformly distributed along the center of the limiting block (14), each mounting through hole (14-1) is fixedly provided with a self-lubricating bearing sleeve (15), and a group of guide posts (16) which are respectively inserted into the self-lubricating bearing sleeves (15) are fixedly arranged at the upper communication cavity (1-2).

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