CN211117922U - Flexible flange soft seal gate valve - Google Patents
Flexible flange soft seal gate valve Download PDFInfo
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- CN211117922U CN211117922U CN201922230108.0U CN201922230108U CN211117922U CN 211117922 U CN211117922 U CN 211117922U CN 201922230108 U CN201922230108 U CN 201922230108U CN 211117922 U CN211117922 U CN 211117922U
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Abstract
The utility model belongs to the technical field of fluid sealing equipment, in particular to a telescopic soft sealing gate valve; the specific technical scheme is as follows: flexible flange soft seal gate valve, which comprises a valve body, transversely open in the valve body has fluid passage, vertical opening has the valve plate passageway that is linked together with fluid passage in the valve body, valve plate passageway's top has connected gradually valve gap and gland, the bottom of valve rod is connected with the valve plate after passing gland and valve gap in proper order, the top of valve rod extends to the outside of gland and with hand wheel connection, flexible flange cartridge is in fluid passage, fix a position through many pull rods between flexible flange and the valve body, through adjusting pull rod and flexible flange, the connection length of valve body, can adjust the length that flexible flange inserts in the fluid passage, on the basis that does not influence original theory of operation and performance, adopt simple and convenient flexible flange design, reach the general interchange of multi-row gate valve, guarantee engineering, fire control, the reliability and the security of facilities such as heat supply water, save manpower and materials.
Description
Technical Field
The utility model belongs to the technical field of the fluid seal equipment, concretely relates to telescopic soft sealing gate valve.
Background
The soft seal gate valve is a universal gate valve commonly used by a water supply system and is divided into an exposed rod soft seal gate valve and a non-exposed rod soft seal gate valve. Taking a non-rising stem soft seal gate valve as an example, generally, a trapezoidal thread is arranged on a lifting rod of the non-rising stem soft seal gate valve, and a valve plate moves up and down through a valve plate nut fixed on the top of the valve plate and a guide groove on a valve body, that is, a rotary motion is changed into a linear motion, that is, an operation torque is changed into an operation thrust. When the valve is opened to rotatory hand wheel, with the hand wheel valve rod of rotation together, through valve rod trapezoidal thread and valve plate nut screw motion drive valve plate shift up, promote 1 that highly equals the valve latus rectum when the valve plate: at 1 time, the passage of fluid is fully open. When the valve is closed, the hand wheel is operated reversely, the valve plate moves downwards along with the screw motion of the valve rod and the valve plate nut until the valve plate integrally enters the wedge-shaped groove of the valve body, the valve plate is in interference fit with the sealing surface of the valve body by the integral rubber coating, and the valve plate is tightly extruded with the notch by utilizing the excellent elastic memory of high-quality rubber, so that the motion of fluid is blocked, and the valve is closed reliably.
The soft sealing gate valve adopts a flat bottom design, has the advantages that impurities and dirt in fluid can smoothly pass through the soft sealing gate valve without resistance, and compared with a hard sealing gate valve which needs to leave a pit, the soft sealing gate valve does not have the accumulation of the impurities, and the most critical performance opening and closing capacity of the gate valve is ensured. The soft sealing gate valve is widely applied to city tap water systems, and has the obvious characteristics that whether the outside or the inner cavity of the valve body is completely made of non-toxic epoxy resin powder materials detected by a health monitoring department, and an electrostatic powder spraying technology is used, so that a paint film is uniformly and firmly adhered to the surface of a casting, and the casting is completely separated from fluid, so that the inner cavity and the valve plate are completely covered, the phenomena of rusting and corrosion are avoided, and the safety of water consumption of residents is ensured.
The main material of the soft seal gate valve is nodular cast iron, the weight of the soft seal gate valve is reduced by about 20% -30% compared with that of the traditional gray iron gate valve, and the nodular cast iron has good physical and mechanical properties, and can keep the whole impact resistance under the action of external force and fluid water hammer force, so that the gate valve is prevented from being deformed and broken, and the service life of the soft seal gate valve is greatly prolonged compared with that of an iron gate valve. The device has the advantages of low cost, reliable performance, simple operation, convenient maintenance and the like, and is a product with high cost performance.
The non-rising stem soft sealing gate valve has the advantages of simple structure, compact external size, convenient maintenance and use and low raw material cost, and is widely applied to pipe networks of factory water supply, fire-fighting facilities, public drinking water and the like, but has a plurality of defects. In view of the fact that the structural length of the existing metal gate valves is divided into 24 basic series, the structural length of each gate valve with the same nominal diameter is different. When the gate valve has sudden failure and needs emergency repair, it is very difficult to choose a gate valve with a proper length on a fixed or buried pipeline which is already laid, thereby causing adverse consequences such as time delay, irrigation spread, public drinking water pollution and the like.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that prior art exists, the utility model discloses on the basis that does not change original gate valve major structure design principle, through add flexible flange on the valve body, flexible flange extends to the length slidable adjustment in the valve body, can be according to the length of actual installation demand adjustment gate valve, and convenient and fast uses manpower sparingly material resources, low cost.
In order to achieve the above object, the utility model adopts the following technical scheme: the flexible flange soft seal gate valve comprises a valve body, wherein a fluid channel is transversely arranged in the valve body, a valve plate channel communicated with the fluid channel is vertically arranged in the valve body, the top of the valve plate channel is sequentially connected with a valve cover and a gland, the bottom of a valve rod sequentially penetrates through the gland and the valve cover and then is connected with the valve plate, and the top of the valve rod extends to the outside of the gland and is connected with a hand wheel. The utility model discloses having add flexible flange, flexible flange cartridge is in fluid passage, through many pull rod location between flexible flange and the valve body, through the connection length of adjusting the pull rod with flexible flange, valve body, can adjust the length that flexible flange inserted in fluid passage, and then the length of adjusting whole valve body is in order to adapt to the interval of reserving on the pipeline, and it is convenient to install.
The head of the telescopic flange is inserted into the fluid channel, the tail of the telescopic flange is provided with a first annular flange seat, the valve body is provided with a second annular flange seat, the first annular flange seat is connected with the second annular flange seat through a plurality of pull rods, the pull rods are respectively in threaded connection with the first annular flange seat and the second annular flange seat, the pull rods are in threaded connection with a first fastening nut, a second fastening nut and a third fastening nut, the first fastening nut is screwed and tightly attached to the first annular flange seat, and the positions of the pull rods and the first annular flange seat are locked through the first fastening nut; the second fastening nut is screwed and tightly attached to one side of the second annular flange seat, the third fastening nut is screwed and tightly attached to the other side of the second annular flange seat, and the positions of the pull rod and the second annular flange seat are locked through the second fastening nut and the third fastening nut; under the effect of first fastening nut, second fastening nut and third fastening nut, guarantee at the in-process of work, the pull rod can not lateral sliding, guarantees the stability of connecting.
The pull rods are arranged at equal angular intervals, so that the pull rods and the first annular flange seat are uniformly stressed, and the pull rods and the second annular flange seat are uniformly stressed, the telescopic flange and the fluid channel are prevented from being influenced by stress concentration, the abrasion between the telescopic flange and the fluid channel is reduced, and the service life of the whole soft sealing gate valve is prolonged.
The gate valve is characterized in that the outer wall of the telescopic flange is sleeved with a sealing cover, an annular open slot is formed in a port of the fluid channel, a sealing rubber ring is clamped in the annular open slot, and the sealing cover is tightly pressed on the sealing rubber ring and is movably connected to the valve body through a plurality of sealing bolts, so that the sealing performance between the telescopic flange and the fluid channel is enhanced.
One side of the sealing cover facing the sealing rubber ring is provided with an annular boss which is tightly pressed on the sealing rubber ring, and the sealing rubber ring can be tightly pressed between the fluid channel and the telescopic flange by the structure of the annular boss, so that the sealing performance between the telescopic flange and the fluid channel is further ensured.
A plurality of sealing bolts are arranged at equal angular intervals, so that the stress between the sealing cover and the valve body is uniform, the flatness of the sealing rubber ring in the annular open slot is good, and the sealing effect is good.
Compared with the prior art, the utility model, specifically beneficial effect is embodied in: the utility model discloses on the basis that does not influence original theory of operation and performance, adopt simple and convenient flexible flange design, reach the general interchange of multi-series gate valve, solved because of the puzzlement of place and fixed pipeline or other equipment restrictions, can not only in time deal with the trouble of various proruptions, the reliability and the security of facilities such as guarantee engineering, fire control, heat supply water supply, and in handling the in-process, avoided a large amount of financial resources, manpower unnecessary cost to drop into.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention when the sealing rubber ring is not installed.
In the figure, 1 is a valve body, 2 is a fluid channel, 3 is a valve plate, 4 is a valve cover, 5 is a gland, 6 is a valve rod, 7 is a hand wheel, 8 is a telescopic flange, 9 is a pull rod, 10 is a first annular flange seat, 11 is a second annular flange seat, 12 is a first fastening nut, 13 is a second fastening nut, 14 is a third fastening nut, 15 is a sealing cover, 16 is an annular open slot, 17 is a sealing rubber ring, 18 is a sealing bolt, 19 is an annular boss, and 20 is a valve plate channel.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-2, the flexible flange soft seal gate valve comprises a valve body 1, a fluid channel 2 is transversely arranged in the valve body 1, a valve plate channel 20 communicated with the fluid channel 2 is vertically arranged in the valve body 1, the valve plate 3 is integrally encapsulated, the valve plate 3 moves up and down in the valve plate channel 20 without deviating from the center, when the valve plate 3 moves to the bottom adopting a flat bottom design, the valve plate is sealed by pressing between the bottom rubber of the valve plate 3 and the junction surface of the annular rubber at the upper part of the valve plate 3 and the fluid channel 2, the flow of fluid is blocked, and the gate valve is closed; the valve plate 3 moves upwards, and the gate valve is opened.
The up-and-down displacement of the valve plate 3 is completed by the rotation of the valve rod 6 made of 2Cr13, the upper part of the valve plate 3 is provided with a valve plate nut which is fixed relative to the valve plate 3, trapezoidal threads are arranged in the nut and are matched with the trapezoidal threads of the valve rod 6 with the same technical data, and the purpose that the rotating force is converted into the lifting force which is linearly reciprocated is realized.
In order to ensure that the operating mechanism does not have the phenomenon of fluid leakage in the operation and running processes and simultaneously ensure that the valve rod 6 always keeps the central position not to deviate, a valve cover 4 cast by QT450 is arranged at the middle opening of the valve body 1, and after a rubber sealing pad of the valve cover 4 made of EPDM is placed in the middle of the valve cover 4, the valve cover 4 is fastened and connected with the valve body 1 through a positioning hole by a stainless steel bolt. The valve plate 3 in the gate valve opening and closing can be lifted and lowered through the rotation of the valve rod 6 without the valve rod 6, and the opening and closing of the main channel are realized by the elastic sealing of high-quality rubber bonded with the valve plate 3, namely, the hidden rod type soft sealing gate valve.
In order to prevent the valve rod 6 from moving and solve the axial sealing problem, a gland 5 made of QT450 is installed on the valve cover 4 in a targeted manner, the gland 5 and the valve cover 4 are sealed by an O-shaped sealing ring, three sealing grooves are reserved on an inner hole of the gland 5 and the upper part of the valve rod 6, and the valve rod 6 is blocked from axial leakage in the rotating and operating processes by adopting interference fit through the proper O-shaped sealing ring. The gland 5 is tightly fixed with the valve cover 4 through a gland 5 bolt, and the gland 5 prevents the valve rod 6 from bouncing and solves the axial sealing of the valve rod 6.
The top of the valve rod 6 is provided with the hand wheel 7, the operation is light and flexible, and meanwhile, the hand wheel 7 is provided with a striking opening and closing direction mark which can be operated according to the on-off intention.
The wall of the fluid channel 2 is thickened and cast, a track for providing the movement of the telescopic flange 8 is machined, the wall thickness of the fluid channel 2 of the valve body 1 still meets the standard specified by the national standard GB/T12232-2005 (a metal valve flange is connected with an iron gate valve), and the mechanical performance of the gate valve can bear the impact of pressure under the condition of rated pressure without damage and destruction. The telescopic flange 8 is inserted in the fluid channel 2, the telescopic flange 8 is used for sliding adjustment according to the required size when the gate valve is installed, and the flange plate side is processed according to GB/T17241.6-2008 (integral casting flange) and can be quickly connected with flanges of pipelines or other equipment.
A certain number of screw holes are made on the circumference of the end face of the telescopic flange 8, a specially-made high-strength stainless steel pull rod 9 is combined with the gate valve body, meanwhile, a sealing cover 15 with an annular boss 19 is sleeved on the telescopic flange 8, and an open slot for placing a sealing rubber ring 17 is reserved at the flange port of the valve body 1. After the telescopic flange 8 is firmly butted with a pipeline or other equipment, a fastening nut is used for screwing and locking, the telescopic flange 8 and the gate valve body are positioned and combined into a whole, then the annular boss 19 of the sealing cover 15 is aligned with an open slot on which the sealing rubber ring 17 is arranged, the sealing bolt 18 is used for screwing, and the annular boss 19 extrudes the sealing rubber ring 17 to achieve the seam allowance sealing effect.
Through the connection length of adjusting the pull rod 9 and the telescopic flange 8, the valve body 1, the length of the telescopic flange 8 inserted into the fluid channel 2 can be adjusted, and then the length of the whole valve body 1 is adjusted to adapt to the reserved interval on the pipeline, and the installation is convenient.
The head of the telescopic flange 8 is inserted into the fluid channel 2, the tail of the telescopic flange 8 is provided with a first annular flange seat 10, the valve body 1 is provided with a second annular flange seat 11, the first annular flange seat 10 is connected with the second annular flange seat 11 through a plurality of pull rods 9, the pull rods 9 are respectively in threaded connection with the first annular flange seat 10 and the second annular flange seat 11, the pull rods 9 are in threaded connection with a first fastening nut 12, a second fastening nut 13 and a third fastening nut 14, the first fastening nut 12 is screwed and tightly attached to the first annular flange seat 10, and the positions of the pull rods 9 and the first annular flange seat 10 are locked through the first fastening nut 12; the second fastening nut 13 is screwed and tightly attached to one side of the second annular flange seat 11, the third fastening nut 14 is screwed and tightly attached to the other side of the second annular flange seat 11, and the positions of the pull rod 9 and the second annular flange seat 11 are locked by the second fastening nut 13 and the third fastening nut 14; under the action of the first fastening nut 12, the second fastening nut 13 and the third fastening nut 14, the pull rod 9 is ensured not to slide transversely in the working process, and the stability of connection is ensured.
The pull rods 9 are arranged at equal angular intervals, so that the pull rods 9 and the first annular flange seat 10 are uniformly stressed, the pull rods 9 and the second annular flange seat 11 are uniformly stressed, the telescopic flange 8 and the fluid channel 2 are prevented from being influenced by stress concentration, abrasion between the telescopic flange 8 and the fluid channel 2 is reduced, and the service life of the whole soft sealing gate valve is prolonged.
A plurality of sealing bolts 18 are arranged at equal angular intervals, so that the stress between the sealing cover 15 and the valve body 1 is uniform, the sealing rubber ring 17 is good in flatness in the annular open slot 16, and the sealing effect is good.
The utility model discloses on the basis that does not influence original theory of operation and performance, adopt simple and convenient 8 designs of flexible flange, reach the general interchange of multi-series gate valve, solved because of the puzzlement of place and fixed pipeline or other equipment restrictions, can not only in time deal with the trouble of various proruptions, the reliability and the security of facilities such as guarantee engineering, fire control, heat supply water supply, and in handling the in-process, avoided a large amount of financial resources, manpower unnecessary cost to drop into.
The foregoing is considered as illustrative and not restrictive of the preferred embodiments of the invention, and any modifications, equivalents and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. Flexible flange soft seal gate valve, including valve body (1), transversely open in valve body (1) has fluid passage (2), vertical opening has valve plate passageway (20) that is linked together with fluid passage (2) in valve body (1), the top of valve plate passageway (20) has connected gradually valve gap (4) and gland (5), and the bottom of valve rod (6) is passed gland (5) and valve gap (4) in proper order and is connected with valve plate (3), and the top of valve rod (6) extends to the outside of gland (5) and is connected with hand wheel (7), its characterized in that still includes flexible flange (8), flexible flange (8) cartridge is in fluid passage (2), and the length that flexible flange (8) inserted in fluid passage (2) is adjustable, fixes a position through many pull rods (9) between flexible flange (8) and valve body (1).
2. The flexible flange soft seal gate valve of claim 1, characterized in that the head of the flexible flange (8) is inserted into the fluid channel (2), the tail of the flexible flange (8) is provided with a first annular flange seat (10), the valve body (1) is provided with a second annular flange seat (11), the first annular flange seat (10) and the second annular flange seat (11) are connected through a plurality of pull rods (9), the pull rods (9) are respectively in threaded connection with the first annular flange seat (10) and the second annular flange seat (11), the pull rods (9) are in threaded connection with a first fastening nut (12), a second fastening nut (13) and a third fastening nut (14), the first fastening nut (12) is screwed and tightly attached to the first annular flange seat (10), the second fastening nut (13) is screwed and tightly attached to one side of the second annular flange seat (11), and a third fastening nut (14) is screwed and tightly attached to the other side of the second annular flange seat (11).
3. Telescopic flange soft seal gate valve according to claim 2, characterized in that a plurality of said tie rods (9) are arranged at equal angular intervals.
4. The flexible flange soft seal gate valve of claim 3, further comprising a seal cover (15) sleeved on the outer wall of the flexible flange (8), wherein an annular open slot (16) is formed in a port of the fluid channel (2), a seal rubber ring (17) is clamped in the annular open slot (16), and the seal cover (15) is tightly pressed on the seal rubber ring (17) and is movably connected to the valve body (1) through a plurality of seal bolts (18).
5. The telescopic flange soft seal gate valve according to claim 4, characterized in that the side of the sealing cover (15) facing the sealing rubber ring (17) is provided with an annular boss (19), and the annular boss (19) is tightly pressed on the sealing rubber ring (17).
6. The telescopic flange soft seal gate valve according to claim 5, characterized in that a plurality of said sealing bolts (18) are arranged at equal angular intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922230108.0U CN211117922U (en) | 2019-12-13 | 2019-12-13 | Flexible flange soft seal gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922230108.0U CN211117922U (en) | 2019-12-13 | 2019-12-13 | Flexible flange soft seal gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211117922U true CN211117922U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922230108.0U Active CN211117922U (en) | 2019-12-13 | 2019-12-13 | Flexible flange soft seal gate valve |
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| Country | Link |
|---|---|
| CN (1) | CN211117922U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664664A (en) * | 2021-01-12 | 2021-04-16 | 芜湖市金贸流体科技股份有限公司 | Telescopic butterfly valve convenient to maintain and control method thereof |
| CN115468034A (en) * | 2022-09-24 | 2022-12-13 | 江苏丰禾机械制造股份有限公司 | Intelligent conical valve shockproof soft and hard lip type self-sealing device applied to pipeline tail end |
-
2019
- 2019-12-13 CN CN201922230108.0U patent/CN211117922U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664664A (en) * | 2021-01-12 | 2021-04-16 | 芜湖市金贸流体科技股份有限公司 | Telescopic butterfly valve convenient to maintain and control method thereof |
| CN115468034A (en) * | 2022-09-24 | 2022-12-13 | 江苏丰禾机械制造股份有限公司 | Intelligent conical valve shockproof soft and hard lip type self-sealing device applied to pipeline tail end |
| CN115468034B (en) * | 2022-09-24 | 2023-10-13 | 江苏丰禾机械制造股份有限公司 | Adjusting method for shock-proof soft and hard lip type sealing pipeline of conical valve |
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