CN207486089U - A kind of valve seat back springing type gate valve - Google Patents
A kind of valve seat back springing type gate valve Download PDFInfo
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- CN207486089U CN207486089U CN201721170925.6U CN201721170925U CN207486089U CN 207486089 U CN207486089 U CN 207486089U CN 201721170925 U CN201721170925 U CN 201721170925U CN 207486089 U CN207486089 U CN 207486089U
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- valve seat
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- springing type
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Abstract
The utility model discloses a kind of valve seat back springing type gate valves, and including valve body, flashboard and back springing type valve component, body cavity bottom offers the first groove, and valve deck is connected on valve body；Back springing type valve component includes valve seat and the first elastomeric element, and valve seat is located at below flashboard, and the first elastomeric element upper and lower surface is connect respectively with valve seat and the first groove slot bottom；Meanwhile back springing type valve component has first state and the second state, in a first state, flashboard is detached from valve seat, and valve seat upper surface maintains an equal level with body cavity bottom；In the second state, flashboard is supported to valve seat upper surface is made to drop in the first groove.The utility model is simple in structure, can reduce the drag losses of flow, it is ensured that condensate pump inlet pressure prevents cavitation phenomenons.
Description
Technical field
The utility model is related to gate valve fields, and in particular to a kind of valve seat back springing type gate valve.
Background technology
Condensate system is that the saturated water in condenser is delivered to water supply system by condensate pump, if condensate pumping intake piping
When the pressure on road drops to the saturated vapour pressure of water at the corresponding temperature, water begins to vaporization and generates a large amount of bubble, bubble with
Flow travels forward, and when moving to pressure higher part position, condenses rapidly, crumbles and fall, and forms cavitation phenomenons, and generates noise, vibration
With the erosion to condensate pump.Therefore, to ensure that cavitation does not occur for condensate pump, system need to reduce condensate pump entrance pipe pressure when designing
Power is lost, it is ensured that enough inlet pressures.Gate valve is largely determined as the most important valve of condensate pump intake, drag size
Condensate pump entrance pressure losses size is determined.Current valve design is mainly by changing valve flashboard structure (run-in index, wedge
Formula) change valve drag size, there is no it is considered that when setting valve seat in body cavity bottom, body cavity is not
One smoothly channel, out-of-flatness brought by valve seat can cause flow boundary damage layer, turbulent flow, the out-of-date speed of flow occur
Decline, so as to cause larger energy consumption, reduce inlet pressure, there is the hidden danger that cavitation phenomenons occur.
Utility model content
For defect in the prior art, the purpose of this utility model is to provide a kind of valve seat back springing type gate valve,
The gate valve structure is simple, can reduce the drag losses of flow, it is ensured that condensate pump inlet pressure prevents cavitation phenomenons.
To achieve the above objectives, the technical scheme adopted by the utility model is that：A kind of valve seat back springing type gate valve, including：
Valve body, the body cavity bottom offer the first groove, valve deck are connected on the valve body；
Flashboard；
It is further included：
Back springing type valve component, including valve seat and the first elastomeric element, the valve seat is located at below the flashboard, described
First elastomeric element upper and lower surface is connect respectively with the valve seat and the first groove slot bottom；Meanwhile the back springing type valve seat
Component has：
First state, in the first state, the flashboard is detached from the valve seat, the valve seat upper surface and the valve
Intracoelomic cavity bottom maintains an equal level；
Second state, in second state, the flashboard is supported to the valve seat upper surface is made to drop to described
In one groove.
Further, be convexly equipped with limited block on a first groove at least cell wall, the limited block upper surface with it is described
Body cavity bottom maintains an equal level, and the card slot chimeric with the limited block is offered on the valve seat wall.
Further, first elastomeric element is spring.
Further, the first groove slot bottom offers the second groove, and first elastomeric element is contained in described
In two grooves.
Further, the valve seat lower surface offers the second groove, and first elastomeric element is contained in described second
In groove.
Further, group is equipped with water-sealed component on the valve deck.
Further, the water-sealed component includes：
Seal cage, the seal cage are fixed in the valve deck；
Water inlet valve group, the water inlet valve group are mounted on the valve deck and are connected with the seal cage；
Valve group is vented, the exhaust valve group is mounted on the valve deck and is connected with the seal cage.
Further, the exhaust valve group includes：
Connecting tube, the connecting tube are mounted on the valve deck and are connected with the seal cage；
Partition board, the partition board are set in the connecting tube, and the connecting tube is divided into first close to the valve deck
Segment and the second section far from the valve deck, offer gas vent on the partition board；
Block is used to open and close the gas vent, and the block is located in the first segment and is connected with a connecting rod,
The connecting rod other end passes through the gas vent and extends in the second section；
Press component, the press component are connected with the connecting rod and in the second sections, the pressing group
Part in the raw when the block be closed the gas vent or the block opens the gas vent during in pressing state.
Further, the press component includes pressing plate and the second elastomeric element, the pressing plate and the connecting rod
Connection, the second elastomeric element both ends are connect respectively with the pressing plate and the partition board.
Compared with prior art, the utility model has the advantage of：
(1) the utility model is by setting back springing type valve component, and when flashboard drop to bottommost, gate valve is closed, cut-out
Flowing water, when flashboard rise, valve open when, valve seat rises under the action of the first elastomeric element, until the upper surface of valve seat with
Body cavity bottom maintains an equal level, and fluid is by restoring to heavy connection of pipe size, since valve base surface is smooth, and and body cavity
Bottom maintains an equal level, and when by this, boundary layer will not be destroyed flowing water, avoid turbulent flow phenomenon, flowing water does not have resistance
Loss or drag losses are reduced to minimum, it is ensured that enough inlet pressures avoid condensate pump cavitation phenomenons from occurring.The structure
Design is simple, and reduction flow resistance effect is good, and gate valve resistance coefficient can be reduced to the 60% of the equal latus rectum condition of standard valve, and valve seat leads to
Diameter can realize that valve seat is effectively sprung back, and easy to maintenance between DN100-DN300, and reliability is high.
(2) water-sealed component is set, leaking into for air can be effectively prevented, ensure that the vacuum in the condenser being connect with gate valve
Degree.
(3) gate valve is manufactured using forging, and all directions size can be contracted to the 50%-80% of the equal latus rectum of standard valve.
Description of the drawings
Fig. 1 is the valve seat back springing type gate valve structure schematic diagram that the utility model embodiment provides；
Fig. 2 is the back springing type valve component structure diagram that the utility model embodiment provides；
Fig. 3 is the water-sealed component structure diagram that the utility model embodiment provides；
Fig. 4 is the exhaust valve group structure diagram that the utility model embodiment provides.
In figure, 1- valve bodies, the first grooves of 10-, 11- valve decks, the upper fillers of 110-, filler under 111-, 112- pressure pads, 12-
Two grooves, 2- flashboards, 3- back springing type valve components, 30- valve seats, the first elastomeric elements of 31-, 4- water-sealed components, 40- seal cages,
41- water inlet valve groups, 42- exhaust valve groups, 420- connecting tubes, 421- partition boards, 422- first segments, 423- second sections, 424- rows
Stomata, 425- blocks, 426- connecting rods, 427- press components, 428- pressing plate, the second elastomeric elements of 429-, 5- valve rods.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Ginseng is seen figure 1 and figure 2, and the utility model embodiment provides a kind of valve seat back springing type gate valve, including：Valve body 1, lock
Plate 2 and back springing type valve component 3,1 intracavity bottom of valve body offer the first groove 10, valve deck are connected on the valve body 1
11, inverted T-shaped may be used in the valve deck 11, and the valve deck 11 is covered on blending bolt on the valve body 1 and fixes to form gate valve, is
Reduction body size, the utility model use dark rod flat plate formula structure gate valve, and mainstream channel uses circular configuration, and gate valve uses
Forging manufactures, and all directions size can be contracted to the 50%-80% of the equal latus rectum of standard valve.Tablet may be used in the flashboard 2
Formula structure or wedge structure, 2 top of flashboard is removably connected with valve rod 5, for example using being threadedly coupled, realizes the flashboard
2 vertical lift, easy to disassemble to be replaced with repair, these are all detachable connections commonly used in the art, again not superfluous
It states.The back springing type valve component 3 includes 30 and first elastomeric element 31 of valve seat, and the valve seat 30 is located at 2 lower section of flashboard,
First elastomeric element, 31 upper and lower surface is connect respectively with the valve seat 30 and 10 slot bottom of the first groove, the valve seat 30
It is contained in first groove 10, the form and dimension of the valve seat 30 matches with 10 form and dimension of the first groove
It closes, for example, the valve seat 30 is rectangular parallelepiped structure, first groove 10 is square groove, and the valve seat 30 is just or substantially
It is entrenched in first groove 10, reduces gap therebetween as far as possible, prevent resistance to water-flow from losing, if the valve seat
30 be cylindrical structure, then first groove 10 is the groove of cylindrical structure；Meanwhile the back springing type valve component 3 has
There are first state and the second state, in the first state, the flashboard 2 is detached from the valve seat 30, and the valve seat 30 accommodates
In first groove 10 and its upper surface maintains an equal level with 1 intracavity bottom of valve body so that 1 inner cavity of valve body becomes one
Smooth channel, flow is out-of-date, will not be prevented from, reduce turbulent flow, prevent water boundary layer in flow process be destroyed so as to
Lead to the drag losses of water；In second state, the flashboard 2 supports recessed to the valve seat 30 is made to be contained in described first
In slot 10 and 30 upper surface of valve seat is dropped in first groove 10, so as to form open circuit, closing gate valve.
The first state realizes that first way is to rely on the bullet of first elastomeric element 31 merely there are two types of mode
Power makes 30 upper surface of valve seat maintain an equal level with 1 intracavity bottom of valve body, at this time the gravity of the valve seat 30 and first bullet
Property component 31 elastic force it is equal, another mode be on the cell wall for rely on first groove 10 set protrusion, can keep off
Residence is stated valve seat 30 and is continued up after table has maintained an equal level with 1 intracavity bottom of valve body on it, and at this time described the
The elastic force of one elastomeric element 31 is more than the gravity of the valve seat 30
The principle of the utility model is：When the valve is closed, the flashboard 2 supports the valve seat under the driving of valve rod 5
30, the valve seat 30 moves downward in first groove 10 and compresses first elastomeric element 31, until the valve seat
30 upper surfaces are dropped in first groove 10, and described the first of even described 30 lower surface of valve seat and the valve body 1 is recessed
The contact of 10 slot bottom of slot, fitting at this point, gate valve is closed, cut off flowing water；When the valve is open, the flashboard 2 is detached from the valve seat 30
And move upwards, the valve seat 30 is moved upwardly until its upper surface and bottom of chamber in the valve body 1 in first groove 10
Portion maintains an equal level, and so far, fluid is by restoring to heavy connection of pipe size, since 30 surface of valve seat is smooth, and with the valve
1 intracavity bottom of body maintains an equal level, and when by this, boundary layer will not be destroyed flowing water, avoid turbulent flow phenomenon, flowing water does not have
There are drag losses or drag losses to be reduced to minimum, it is ensured that enough inlet pressures avoid condensate pump cavitation phenomenons from occurring.
The structure design is simple, and reduction flow resistance effect is good, and gate valve resistance coefficient can be reduced to the equal latus rectum item of standard valve
The 60% of part, valve seat latus rectum can realize that valve seat is effectively sprung back, and easy to maintenance between DN100-DN300, and reliability is high.
Further, relative to making, the gravity of the valve seat 30 is with the elastic force of first elastomeric element 31 equal to be ensured
30 upper surface of valve seat maintains an equal level with 1 intracavity bottom of valve body, and more convenient design is set, and in such case using protrusion
Under, due to the upward elastic force of first elastomeric element 31, the valve seat 30 can be caused to be not easy to force by water, because
This, sets limited block a first groove 10 at least cell wall is convex, the limited block upper surface and 1 intracavity bottom of valve body
Maintain an equal level, while the card slot chimeric with the limited block is opened up on 30 side wall of valve seat, when the valve seat 30 is described first
When its upper surface and fair 1 intracavity bottom of valve body are moved upward in groove 10, which can just be fitted into collecting post
Limited block is stated, under the resistance of the limited block, the valve seat 30 can both ensure its upper surface and bottom of chamber in the valve body 1
Portion maintains an equal level, while also prevents the valve seat 30 and continued up under the elastic force effect of first elastomeric element 31.
Shown in Figure 2, further, first elastomeric element 31 is spring.Can set as needed it is multiple, with
Prevent spring from following the string, the spring is detachably connected with the valve seat 30 and first groove 10 so that it is convenient to bullet
The replacement of spring, in order to ensure its service life, spring uses stainless steel, prevents from being lost by scale.First elastomeric element
31 can also use the materials such as plastics, rubber with favorable elasticity ability, be best using spring, material is cheap certainly
It is easy to get.
It is shown in Figure 2, further, the second groove 12, first elasticity are opened up in 10 slot bottom of the first groove
Component 31 is contained in second groove 12.Alternatively, open up the second groove 12, first bullet in 30 lower surface of valve seat
Property component 31 is contained in second groove 12.
Second groove 12 is set, it is recessed can be contained in described second completely when the elastomeric element 31 is compressed
In slot 12, the valve seat 30 can fit in 10 slot bottom of the first groove completely, it is ensured that flowing water is completely cut through, naturally it is also possible to
It plays a protective role to the elastomeric element 31, extends its service life；Second groove 12 is set to first groove
On 10 slot bottoms or the valve seat 30, can according to circumstances it select.
Referring to shown in Fig. 1 and Fig. 3, further, group is equipped with water-sealed component 4 on the valve deck 11, and the water-sealed component 4 wraps
It includes seal cage 40, water inlet valve group 41 and exhaust valve group 42, the seal cage 40 to be fixed in the valve deck 11, valve rod 5 passes through institute
Up and down motion can be realized by stating seal cage 40, and the water inlet valve group 41 is mounted on the valve deck 11 and connects with the seal cage 40
Logical, the exhaust valve group 42 is mounted on the valve deck 11 and is connected with the seal cage 40.
Its principle is：Flowing water enters the seal cage 40 by the water inlet valve group 41, and the air in the gate valve is passed through
The exhaust valve group 42 is discharged, when the exhaust valve group 42 uniformly can flow out flowing water, it is believed that filled in the seal cage 40
Expire water, when valve rod 5 moves up and down, leaking into for air is prevented by the seal cage 40, it is ensured that the vacuum degree of condenser,
It ensure that the stabilization of pressure, prevent cavitation phenomenons.The seal cage 40 and the water inlet valve group 41 are all relatively conventional
Component, details are not described herein.
Shown in Figure 3,11 inner wall of valve deck is equipped with upper filler 110, lower filler 111 and pressure pad 112, the seal cage
40 upper and lower surfaces are bonded respectively with the upper filler 110 and the lower filler 111, and the pressure pad 112 is located at the upper filler 110
It goes up and compresses the upper filler 110.Spring may be used in the pressure pad 112, and compressing the upper filler 110 causes the seal cage
40 are tightly pressed between the upper filler 110 and the lower filler 111.
Shown in Figure 4, further, the exhaust valve group 42 includes connecting tube 420, partition board 421, block 425 and presses
Press component 427；The connecting tube 420 is mounted on the valve deck 11 and is connected with the seal cage 40；The partition board 421 is set on
In the connecting tube 420, and the connecting tube 420 is divided into close to the first segment 422 of the valve deck 11 and far from described
The second section 423 of valve deck 11 offers gas vent 424 on the partition board 421；The block 425 is used to open and close the exhaust
Rectangular or spherical structure may be used in hole 424, the block 425, as long as it can open and close the gas vent 424, it is preferred to use
Spherical structure, the block 425 are located in the first segment 422 and are connected with a connecting rod 426, and the connecting rod 426 is another
One end passes through the gas vent 424 and extends in the second section 423；The press component 427 and the connecting rod 426
Be connected and in the second section 423, the press component 427 in the raw when the block 425 be closed it is described
The gas vent 424 or block 425 opens the gas vent 424 during in pressing state.
Shown in Figure 4, further, the press component 427 includes 428 and second elastomeric element 429 of pressing plate, institute
State the second elastomeric element 429 in addition to using other than spring, can also use it is other there is elastic element to substitute, such as rubber material or
Plastic material, the pressing plate 428 are connect with the connecting rod 426, and 429 both ends of the second elastomeric element are pressed respectively with described
Pressing plate 428 and the partition board 421 connect.
In actual assembled, the spring pocket using spring, can be preferably set on described by second elastomeric element 429
In connecting rod 426, the spring is avoided to come off.
It of courses, second elastomeric element 429 can also be multiple telescopic connection straps, and the connection strap both ends connect
423 inner wall of the pressing plate 428 and the second section is connect, is had between adjacent two connection strap for air or water between
Gap.
Concrete operations are：When initial water flowing, water is accessed by the water inlet valve group 41, opens the exhaust valve group
42, that is, press the pressing plate 428, the block 425 pushed open, open the gas vent 424, initial water by it is described into
Water valve group 41 enter the seal cage 40 until it is described exhaust valve group 42, when it is described exhaust valve group 42 in uniformly flow out water,
Think that full of water, when the valve rod 5 moves up and down, the leakage of air is prevented by the seal cage 40 for the seal cage 40 at this time
Enter.
The utility model is not limited to the above embodiment, for those skilled in the art, not
Under the premise of being detached from the utility model principle, several improvements and modifications can also be made, these improvements and modifications are also considered as this reality
Within novel protection domain.The content not being described in detail in this specification belongs to well known to professional and technical personnel in the field
The prior art.
Claims (9)
1. a kind of valve seat back springing type gate valve, including：
Valve body (1), valve body (1) intracavity bottom offer the first groove (10), valve deck are connected on the valve body (1)
(11)；
Flashboard (2)；
It is characterized in that, it is further included：
Back springing type valve component (3), including valve seat (30) and the first elastomeric element (31), the valve seat (30) is positioned at the lock
Below plate (2), the first elastomeric element (31) upper and lower surface respectively with the valve seat (30) and first groove (10) slot
Bottom connects；Meanwhile the back springing type valve component (3) has：
First state, in the first state, the flashboard (2) is detached from the valve seat (30), valve seat (30) upper surface
Maintain an equal level with the valve body (1) intracavity bottom；
Second state, in second state, the flashboard (2) supports described to the valve seat (30) upper surface is dropped to
In first groove (10).
2. a kind of valve seat back springing type gate valve as described in claim 1, it is characterised in that：First groove (10) at least slot
Limited block is convexly equipped on wall, the limited block upper surface maintains an equal level with the valve body (1) intracavity bottom, on valve seat (30) side wall
Offer the card slot chimeric with the limited block.
3. a kind of valve seat back springing type gate valve as described in claim 1, it is characterised in that：First elastomeric element (31) is bullet
Spring.
4. a kind of valve seat back springing type gate valve as described in claim 1, it is characterised in that：First groove (10) slot bottom opens up
There is the second groove (12), first elastomeric element (31) is contained in second groove (12).
5. a kind of valve seat back springing type gate valve as described in claim 1, it is characterised in that：Valve seat (30) lower surface offers
Second groove (12), first elastomeric element (31) are contained in second groove (12).
6. a kind of valve seat back springing type gate valve as described in claim 1-5 is any, it is characterised in that：Group is set on the valve deck (11)
There is water-sealed component (4).
7. a kind of valve seat back springing type gate valve as claimed in claim 6, which is characterized in that the water-sealed component (4) includes：
Seal cage (40), the seal cage (40) are fixed in the valve deck (11)；
Valve group of intaking (41), the water inlet valve group (41) are mounted on the valve deck (11) and are connected with the seal cage (40)；
Valve group (42) is vented, the exhaust valve group (42) is mounted on the valve deck (11) and is connected with the seal cage (40).
8. a kind of valve seat back springing type gate valve as claimed in claim 7, which is characterized in that the exhaust valve group (42) includes：
Connecting tube (420), the connecting tube (420) are mounted on the valve deck (11) and are connected with the seal cage (40)；
The connecting tube (420) is divided into and leans in the connecting tube (420) by partition board (421), the partition board (421)
The first segment (422) of the nearly valve deck (11) and the second section (423) far from the valve deck (11), the partition board (421)
On offer gas vent (424)；
Block (425) is used to open and close the gas vent (424), and the block (425) is in the first segment (422)
And a connecting rod (426) is connected with, connecting rod (426) other end passes through the gas vent (424) and extends to described the
In two segments (423)；
Press component (427), the press component (427) are connected with the connecting rod (426) and positioned at the second sections
(423) in, the press component (427) in the raw when the block (425) be closed the gas vent (424) or be in
The block (425) opens the gas vent (424) during pressing state.
9. a kind of valve seat back springing type gate valve as claimed in claim 8, it is characterised in that：The press component (427) is including pressing
Pressing plate (428) and the second elastomeric element (429), the pressing plate (428) connect with the connecting rod (426), second bullet
Property component (429) both ends are connect respectively with the pressing plate (428) and the partition board (421).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721170925.6U CN207486089U (en) | 2017-09-13 | 2017-09-13 | A kind of valve seat back springing type gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721170925.6U CN207486089U (en) | 2017-09-13 | 2017-09-13 | A kind of valve seat back springing type gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207486089U true CN207486089U (en) | 2018-06-12 |
Family
ID=62481603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721170925.6U Active CN207486089U (en) | 2017-09-13 | 2017-09-13 | A kind of valve seat back springing type gate valve |
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| Country | Link |
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| CN (1) | CN207486089U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542941A (en) * | 2017-09-13 | 2018-01-05 | 中国船舶重工集团公司第七〇九研究所 | A kind of valve seat back springing type gate valve |
| CN109027319A (en) * | 2018-09-12 | 2018-12-18 | 苏州丹顿机电有限公司 | A kind of Temp.-controlled water valve |
-
2017
- 2017-09-13 CN CN201721170925.6U patent/CN207486089U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542941A (en) * | 2017-09-13 | 2018-01-05 | 中国船舶重工集团公司第七〇九研究所 | A kind of valve seat back springing type gate valve |
| CN109027319A (en) * | 2018-09-12 | 2018-12-18 | 苏州丹顿机电有限公司 | A kind of Temp.-controlled water valve |
| CN109027319B (en) * | 2018-09-12 | 2021-05-14 | 苏州丹顿机电有限公司 | Temperature-regulating water valve |
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