CN211574305U - High-sealing elastic seat seal gate valve - Google Patents

Abstract

The utility model discloses a high sealed elasticity seat seals gate valve, include: the valve body is provided with a first channel and used for feeding liquid; the second channel is used for discharging liquid; a third channel connected between the first channel and the second channel; and a first seal; the center lines of the first channel, the second channel and the third channel form a right-angled triangle structure; the first detachable flange is connected to the valve body and communicated with the first channel; the second detachable flange is connected to the valve body and communicated with the second channel; the blank cap is connected to the top of the valve body, and a second sealing piece is arranged on the inner wall of the blank cap; the valve rod is connected to the closing cover; the valve core is connected to the valve rod, matched with the third channel, can move upwards along the third channel, is attached to the second sealing element to connect liquid, can move downwards along the third channel, is attached to the first sealing element to block the liquid; the technical problems of poor sealing performance and relatively high replacement cost are solved.

Description

High-sealing elastic seat seal gate valve

Technical Field

The utility model relates to an equipment technical field that uses among the fluid transportation process, specific high sealed elasticity seat seals gate valve that says so.

Background

During the process of conveying fluid, a gate valve is usually used to connect or block the flow of liquid; for example, the prior art with chinese patent application No. 201721261158.X, entitled high-sealing elastic seat gate valve, can well connect or block the flow of liquid; in specific use, the discovery still exists following not enough at least, passageway on the valve body among the prior art is a straight line, when the valve plate blockked the fluid, the valve plate is the side atress, when fluid pressure is great, can cause the valve plate and change a deformation of silk valve rod, arouse the seepage, the leakproofness is relatively poor, flange on the valve body is a whole with the valve body simultaneously, and the pressure that flange department bore is great, in addition ordinary installation is dismantled, all need operate on the flange, cause the flange to damage very easily, during the change, just must change whole valve body, the replacement cost is relatively high.

Disclosure of Invention

To the above-mentioned weak point that exists among the correlation technique, the utility model aims at providing a high sealed elasticity seat seals gate valve to the leakproofness of solving among the correlation technique is relatively poor, more changes the relatively higher technical problem of cost.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides a high sealed elasticity seat seals gate valve, its structural feature is, includes:

the valve body is provided with a first channel for feeding liquid; a second channel for discharging liquid; the third channel is connected between the first channel and the second channel and is vertically arranged with the first channel; and a first seal; the center lines of the first channel, the second channel and the third channel form a right-angled triangle structure;

a first removable flange connected to one side of the valve body and communicating with the first passage;

the second detachable flange is connected to the other side of the valve body and communicated with the second channel;

the blank cap is connected to the top of the valve body, and a second sealing piece is arranged on the inner wall of the blank cap;

a valve rod connected to the blank cap and capable of moving up and down along the blank cap;

and the valve core is connected to the valve rod, is matched with the third channel, can move upwards along the third channel, is attached to the second sealing element, is communicated with liquid, can move downwards along the third channel, is attached to the first sealing element, and blocks the liquid.

Further: the valve body is connected with the first detachable flange or the second detachable flange through threads.

Further: the third channel comprises a large cavity with a circular cross section and is in direct contact with the second channel; and the small cavity is circular in cross section, is connected to the bottom of the large cavity and is in direct contact with the first channel.

Further: the first detachable flange and the second detachable flange are identical in structure and comprise a flange surface and an external thread pipe section, and the external thread pipe section is connected to the back surface of the flange surface and used for being connected with an internal thread hole in the valve body.

Further: the valve rod comprises a small shaft section which is used for being connected with the first blind hole on the valve core; the external thread shaft section is connected to the small shaft section and is used for being in threaded connection with the blank cap; the convex block is connected to the external thread shaft section, the cross section of the convex block is square, and force can be conveniently applied to rotate the valve rod; the diameter size of the small shaft section is smaller than that of the external thread shaft section.

Further: the valve core comprises a first cylindrical part, the outer wall of the first cylindrical part is provided with at least three annular grooves which are connected to the valve rod and are in clearance fit with the large cavity according to normal tolerance; and the second cylindrical part is connected to the bottom of the first cylindrical part and can be clamped with the small cavity.

Further: and a third sealing element is embedded on the outer wall of the valve core.

The utility model has the advantages that: compared with the prior art, when liquid is blocked, the first channel and the second channel are separated by the valve core, the bottom of the valve core bears liquid pressure, and the direction of the pressure is consistent with the central line direction of the valve core and the valve rod, so that the valve core and the valve rod are generally not bent and deformed, and the sealing property is relatively good; meanwhile, the valve body and the first detachable flange or the second detachable flange are arranged in a split mode, so that when the valve body is locally damaged, integral replacement is not needed, and replacement cost is relatively low; thereby overcome that the leakproofness is relatively poor, the relatively higher technical problem of replacement cost, it is good to have reached the leakproofness, has reduced replacement cost's technological effect, and the practicality is strong.

Drawings

Fig. 1 is a schematic structural view of the embodiment of the present invention when liquid is blocked;

fig. 2 is a schematic structural diagram of a valve stem in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a valve element in an embodiment of the present invention;

fig. 4 is a partially enlarged view of a portion a of fig. 1 according to the present invention;

fig. 5 is a schematic structural view of the embodiment of the present invention during liquid flow;

in the figure: 10. the valve comprises a valve body, 11, a first channel, 12, a second channel, 13, a third channel, 131, a large cavity, 132, a small cavity, 14, a first sealing element, 15, an internal threaded hole, 20, a first detachable flange, 21, a flange surface, 22, an external threaded pipe section, 30, a second detachable flange, 40, a blank cap, 41, a second sealing element, 50, a valve rod, 51, a small shaft section, 52, an external threaded shaft section, 53, a bump, 60, a valve core, 61, a first cylindrical element, 611, an annular groove, 62, a second cylindrical element, 63, a third sealing element and 64, a first blind hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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;

the utility model relates to a high-sealing elastic seat seal gate valve, which solves the technical problems of poor sealing performance and relatively high replacement cost in the related technology; the valve can be manufactured and used, and the positive effects of good sealing performance and reduction of replacement cost can be achieved; the general idea is as follows:

example (b):

see fig. 1, fig. 2, fig. 3, fig. 4, fig. 5; a high seal elastomeric seating gate valve comprising:

a valve body 10, wherein the valve body 10 is provided with a first channel 11 for feeding liquid; a second channel 12 for discharging liquid; a third channel 13 connected between the first channel 11 and the second channel 12 and vertically arranged with the first channel 11; and a first seal 14; the center lines of the first channel 11, the second channel 12 and the third channel 13 form a right-angled triangle structure;

a first detachable flange 20 connected to one side of the valve body 10 and communicating with the first passage 11;

a second detachable flange 30 connected to the other side of the valve body 10 and communicating with the second passage 12;

a blank cap 40 connected to the top of the valve body 10, and having a second sealing member 41 on the inner wall;

a valve rod 50 connected to the blank cap 40 and capable of moving up and down along the blank cap 40;

the valve core 60 is connected to the valve rod 50, is matched with the third channel 13, can move upwards along the third channel 13, is attached to the second sealing element 41 to connect liquid, and can move downwards along the third channel 13, is attached to the first sealing element 14 to connect liquid and block liquid;

specifically, in the implementation, the liquid flows along the arrow direction, when the liquid is blocked, the valve core 60 separates the first channel 11 from the second channel 12, the bottom of the valve core 30 bears the liquid pressure, and the direction of the pressure is the same as the central line direction of the valve core 60 and the valve rod 50, so the valve core 60 and the valve rod 50 are generally not bent and deformed, and the sealing performance is relatively good; meanwhile, the valve body 10 and the first detachable flange 20 or the second detachable flange 30 are arranged in a split mode, so that when the valve body is locally damaged, integral replacement is not needed, and the replacement cost is relatively low; therefore, the technical problems of poor sealing performance and relatively high replacement cost are solved, the technical effects of good sealing performance and reduction of replacement cost are achieved;

specifically, in fig. 1, 4 and 5, the valve body 10 is connected with the first detachable flange 20 or the second detachable flange 30 through a screw thread; the first detachable flange 20 and the second detachable flange 30 are identical in structure and each comprise a flange surface 21 and an externally threaded pipe section 22, wherein the externally threaded pipe section 22 is connected to the back surface of the flange surface 21 and is used for being connected with the internally threaded hole 15 in the valve body 10; the flange surface 21 and the external thread pipe section 22 are formed by forging blanks and machining, raw material belts are wound on the external thread pipe section 22 and connected with the internal thread hole 15, and meanwhile, a red copper pad 70 is arranged between the flange surface 21 and the valve body 10; the valve body 10 and the first detachable flange 20 or the second detachable flange 30 are convenient to mount and dismount, the sealing performance is good, when the valve body is damaged locally, for example, when the first detachable flange 20 is damaged, only the first detachable flange 20 needs to be replaced, and the replacement cost is relatively low;

specifically, in fig. 1 and 5, the cross section of the first channel 11 and the second channel 12 is a circular structure, so that the frictional resistance is reduced, and the liquid flow is facilitated;

specifically, in fig. 1 and 5, the third channel 13 includes a large cavity 131, which is circular in cross section and is in direct contact with the second channel 12; and a small cavity 132, which has a circular cross section, is connected to the bottom of the large cavity 131, and is in direct contact with the first channel 11; the inner diameter of the small cavity 132 is smaller than that of the first passage 11; the inner diameter of the large cavity 131 is larger than that of the second channel 12; when the third channel 13 is in clearance fit with the valve core 60, the liquid can be well communicated or blocked;

specifically, in fig. 1 and 5, the first seal 14 and the second seal 41 are both O-rings; in order to ensure the sealing property, an O-shaped ring can be added on the upper surface of the valve core 60 to act together with the second sealing element 41, and when the valve core 60 is contacted with the blank cap 40, the sealing property between the two is better;

specifically, in fig. 1 and 5, the blank cap 40 is machined from a steel plate, and is connected with a flange on the top of the valve body 10 through a bolt after a teflon sealing pad is arranged on the flange;

specifically, in fig. 1, 2 and 5, the valve stem 50 includes a small shaft section 51 for connecting with a first blind hole 64 of the valve core 60; an externally threaded shaft section 52 connected to the small shaft section 51 for threaded connection with the blank cap 40; and a projection 53 attached to the externally threaded shaft section 52 and having a square cross-section for facilitating rotation of the valve stem 50 by application of a force; the diameter size of the small shaft section 51 is smaller than that of the external thread shaft section 52; when the valve core is implemented, the small shaft section 51, the external thread shaft section 52 and the convex block 53 are integrally formed, the small shaft section 51 is matched with the first blind hole 64 according to normal tolerance and then welded with the valve core 60, so that the valve rod 50 and the valve core 60 are connected into a whole, the valve rod 50 is rotated by applying force on the convex block 53 through a wrench, the valve rod 50 moves up and down along the blank cap 40 through the external thread shaft section 52, the valve core 60 is driven to rotate, the up-and-down movement position of the valve core 60 is realized, and liquid is communicated or blocked;

more specifically, in fig. 1, 3 and 5, the valve core 60 comprises a first cylindrical member 61 having three annular grooves 611 on the outer wall, connected to the valve stem 50, and fitted with the large cavity 131 with a normal clearance fit; a second cylindrical member 62 connected to the bottom of the first cylindrical member 61 and capable of engaging with the small cavity 132; in implementation, the first cylindrical member 61 and the second cylindrical member 62 are machined by a round steel all-in-one machine, and three annular grooves 611 and three first blind holes 64 are machined; by providing the annular groove 611, a labyrinth seal is formed, which prevents liquid from entering between the valve core 60 and the blank cap 40 from the gap between the first cylindrical member 61 and the large cavity 131 and leaking along the externally threaded shaft section 52 when the valve core 60 moves upward and downward;

specifically, in fig. 1, 3 and 5, a third sealing member 63 is embedded on the outer wall of the valve core 60; in implementation, the third sealing member 63 is a rubber ring, has an approximately T-shaped cross section, and is clamped in a groove with a T-shaped cross section on the outer wall of the valve core 60 to further form a seal, so as to prevent liquid from entering between the valve core 60 and the blank cap 40 through a gap between the first cylindrical member 61 and the large cavity 131 and leaking along the external threaded shaft section 52;

specifically, when installed, a second seal 41 is attached to the bulkhead 40; a first seal 14 is attached to the valve body 10; the valve rod 50 is connected to the blank cap 40, and then the valve core 60 is connected with the valve rod 50 and is integrally connected to the valve body 10 through the blank cap 40; then the first detachable flange 20 and the second detachable flange 30 are respectively connected to the valve body 10;

the utility model discloses a theory of operation: in implementation, when liquid is blocked, the first channel 11 and the second channel 12 are separated by the valve core 60, the bottom of the valve core 30 bears liquid pressure, and the direction of the pressure is consistent with the central line direction of the valve core 60 and the valve rod 50, so that the valve core 60 and the valve rod 50 are generally not bent and deformed, and the sealing property is relatively good; meanwhile, the valve body 10 and the first detachable flange 20 or the second detachable flange 30 are arranged in a split mode, when the valve body is damaged locally, integral replacement is not needed, and replacement cost is relatively low.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like, which indicate orientations or positional relationships, are based on the positional relationships illustrated in the drawings, and are only for convenience of describing the present invention or simplifying the description, but do not indicate specific orientations that must be provided; the operation processes described in the embodiments are not absolute use steps, and may be adjusted accordingly when actually used.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs; the use of "first," "second," and the like in the description and in the claims is not intended to identify any order, quantity, or importance, but rather is used to distinguish one element from another, and similarly, the use of "a" or "an" and the like do not necessarily indicate a limitation of quantity, but rather indicate the presence of at least one, depending on the context of the embodiment.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. A high seal elastomeric seating gate valve, comprising:

a valve body (10), wherein the valve body (10) is provided with a first channel (11) for feeding liquid; a second channel (12) for discharging liquid; a third channel (13) connected between the first channel (11) and the second channel (12) and arranged perpendicularly to the first channel (11); and a first seal (14); the center lines of the first channel (11), the second channel (12) and the third channel (13) form a right-angled triangle structure;

a first removable flange (20) connected to one side of said valve body (10) and communicating with said first passage (11);

a second removable flange (30) connected to the other side of the valve body (10) and communicating with the second channel (12);

a blank cap (40) connected to the top of the valve body (10), and a second sealing member (41) is arranged on the inner wall of the blank cap;

a valve rod (50) connected to the blank cap (40) and capable of moving up and down along the blank cap (40);

and the valve core (60) is connected to the valve rod (50), is matched with the third channel (13), can move upwards along the third channel (13), is attached to the second sealing element (41) to connect liquid, can move downwards along the third channel (13), is attached to the first sealing element (14) to connect liquid and block liquid.

2. A high seal elastomeric seating gate valve as claimed in claim 1, wherein: the valve body (10) is in threaded connection with the first detachable flange (20) or the second detachable flange (30).

3. A high seal elastomeric seating gate valve as claimed in claim 1, wherein: the third channel (13) comprises a large cavity (131) with a circular cross section, which is in direct contact with the second channel (12); and a small cavity (132) which is circular in cross section, is connected to the bottom of the large cavity (131), and is in direct contact with the first channel (11).

4. A high seal elastomeric seating gate valve as claimed in claim 2, wherein: the first detachable flange (20) and the second detachable flange (30) are identical in structure and comprise a flange surface (21) and an external thread pipe section (22) which is connected to the back surface of the flange surface (21) and used for being connected with an internal thread hole (15) in the valve body (10).

5. A high seal elastomeric seating gate valve as claimed in claim 1, wherein: the valve rod (50) comprises a small shaft section (51) which is used for being connected with a first blind hole (64) on the valve core (60); an externally threaded shaft section (52) connected to the small shaft section (51) for threaded connection with the blank cap (40); and a projection (53) attached to said externally threaded shaft section (52) and having a square cross-section for facilitating application of force to rotate said valve stem (50); the diameter size of the small shaft section (51) is smaller than that of the external thread shaft section (52).

6. A high seal elastomeric seating gate valve as claimed in claim 3, wherein: the valve core (60) comprises a first cylindrical part (61), the outer wall of which is provided with at least three annular grooves (611), the annular grooves are connected to the valve rod (50) and are in clearance fit with the large cavity (131) according to normal tolerance; a second cylindrical member (62) connected to the bottom of the first cylindrical member (61) and capable of engaging with the small cavity (132).

7. A high seal elastomeric seating gate valve as claimed in claim 6, wherein: and a third sealing element (63) is embedded on the outer wall of the valve core (60).

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