CN212616389U - Sleeve single-seat control valve with balance chamber - Google Patents
Sleeve single-seat control valve with balance chamber Download PDFInfo
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- CN212616389U CN212616389U CN202021164465.8U CN202021164465U CN212616389U CN 212616389 U CN212616389 U CN 212616389U CN 202021164465 U CN202021164465 U CN 202021164465U CN 212616389 U CN212616389 U CN 212616389U
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Abstract
The sleeve single-seat control valve with the balance cavity comprises a valve core arranged in the sleeve, a valve seat is arranged at the joint of a liquid outlet cavity and a liquid inlet cavity, the bottom end of the valve core is matched and sealed with the valve seat, the outer wall of the top end of the valve core is matched and sealed with the inner wall of a sealing barrel, the top of the valve core is connected with a valve rod, the valve core, the valve seat, the sleeve and the valve rod are all positioned at the same central line, the top of a valve body is connected with a valve cover, the valve rod penetrates through the valve cover, the area surrounded by the valve core, the sealing barrel and the valve cover is a balance cavity, the balance cavity is communicated with the liquid outlet cavity, and the balance cavity is used for balancing the; the utility model discloses a single seat control valve is as overall structure for the leakproofness of control valve is better, and adopts the structure of advancing down, increases the sleeve and improves the interior fluid environment of valve, makes the liquid of influx dispersed, reduces water pressure.
Description
Technical Field
The utility model belongs to the technical field of the governing valve processing, in particular to sleeve list seat control valve with balanced cavity.
Background
The existing regulating valves are mainly divided into two types, namely a single-seat control valve and a sleeve control valve; the throttling characteristic of the single-seat control valve is completed by a plunger valve core with a specific molded surface, and the single sealing surface is sealed, so that the sealing performance is good, the leakage grade is ANSIB16.104 IV grade, but the unbalanced force of the borne fluid is large, and the single-seat control valve is not suitable for the working conditions of high differential pressure and unstable system; the throttling characteristic of the sleeve control valve is finished by a sleeve window, the valve core is provided with a pressure balance hole, the valve core needs to be sealed by double sealing faces at the same time, the sealing performance is poor, the leakage grade is ANSIB16.104 II-III grade, but the larger unbalanced force of fluid can be overcome, and the large differential pressure is borne;
the single-seat control valve and the sleeve control valve are respectively provided with only one liquid inlet cavity and one liquid outlet cavity, when the valve core moves downwards, the bottom cavity can apply pressure upwards, so that the pressure on the valve core is unbalanced, and the valve rod does not move stably;
the two existing valves have certain defects and cannot well meet the use requirements.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists, provide the sleeve list seat control valve with balanced cavity, concrete technical scheme is as follows:
the sleeve single-seat control valve with the balance cavity comprises a valve body, wherein the bottom inside the valve body is a liquid outlet cavity, the top inside the valve body is a liquid inlet cavity, a sleeve is installed inside the liquid inlet cavity, the top area of the sleeve is a sealing cylinder, and the bottom area of the sleeve is a second flow through hole; the second flow through hole is used for improving a fluid environment;
the valve comprises a sleeve, a liquid outlet cavity, a liquid inlet cavity, a liquid outlet cavity, a valve seat, a valve cover, a valve body, a valve rod, a valve cover, a valve rod, a balance cavity and a liquid outlet cavity, wherein the valve core is arranged inside the sleeve, the valve seat is arranged at the joint of the liquid outlet cavity and the liquid inlet cavity, the bottom end of the valve core is matched and sealed with the valve seat, the outer wall of the top end of the valve core is matched and sealed with the inner wall of a sealing cylinder, the top of the valve core is connected with the valve rod, the valve core, the valve seat, the sleeve and the valve rod are all located at the same central line, the top of the valve body is.
Further, the first flow through holes and the second flow through holes are both of a net-shaped distribution structure.
Furthermore, the liquid outlet cavity is of a sunken bowl-shaped structure, and the liquid inlet cavity is of an upward convex bowl-shaped structure.
Further, the valve core comprises an inner mounting ring, an outer core body and a sealing ring, the inner mounting ring is sleeved with the bottom end of the valve rod, a first flow through hole is formed in the inner mounting ring, the outer core body is arranged outside the sealing ring, the bottom end of the outer core body is matched and sealed with the valve seat, the top end of the outer core body is provided with the sealing ring, the sealing ring is matched and sealed with the inner wall of the sealing cylinder, and the inner mounting ring, the outer core body and the sealing ring are located on the same central line.
Further, the outer wall cover of sealing ring is equipped with a plurality of first sealing washers, first sealing washer with the inner wall laminating of a sealing barrel.
Further, the sleeve is perpendicularly fixed on the bottom surface of the valve cover, the bottom end of the sleeve is attached to the valve seat, and a second sealing ring is installed at the attachment position of the sleeve and the valve seat.
Furthermore, the bottom surface center department downwardly extending of valve gap has spacing pipe, the internally mounted of spacing pipe has the uide bushing, the valve rod run through in the uide bushing.
The utility model has the advantages that:
1. the single-seat control valve is adopted as an integral structure, so that the sealing performance of the control valve is better, and an upper inlet and lower outlet structure is adopted, so that a sleeve is added to improve the fluid environment in the valve, so that the inflowing liquid is dispersed, the water pressure is reduced, the cavitation is prevented, and the valve body and the valve internals are protected; the throttling task is completed by a plunger valve core or a porous valve core, and the sleeve does not play a throttling role;
2. the balance cavity is added in the valve core and communicated with the liquid outlet cavity, so that liquid and gas can enter the balance cavity in advance, the pressure at the top and the bottom of the valve core is balanced, the pressure applied to the valve core during movement is reduced, the valve core is stressed uniformly from top to bottom, and the movement of the valve rod and the valve core is more flexible and stable.
3. Through first sealing washer and second sealing washer, can increase case, telescopic connection leakproofness, avoid liquid to reveal in advance to balanced intracavity.
Drawings
Fig. 1 shows a schematic structural diagram of a sleeve single-seat control valve with a balance chamber according to the present invention;
fig. 2 shows a schematic view of the valve cartridge structure of the present invention;
fig. 3 shows a schematic view of the sleeve structure of the present invention;
fig. 4 shows a schematic view of the connection structure of the valve core and the sleeve of the present invention;
shown in the figure: 1. the valve comprises a valve body, 11, a liquid inlet cavity, 12, a liquid outlet cavity, 2, a valve seat, 3, a valve core, 31, an inner mounting ring, 311, a first flow through hole, 32, an outer core body, 33, a sealing ring, 331, a first sealing ring, 4, a sleeve, 41, a sealing barrel, 42, a second flow through hole, 5, a balance cavity, 6, a valve cover, 61, a limiting pipe, 7, a guide sleeve, 8, a valve rod, 9 and a second sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The sleeve single-seat control valve with the balance chamber comprises a valve body 1, wherein a liquid outlet cavity 12 is formed in the bottom of the valve body 1, and a liquid inlet cavity 11 is formed in the top of the valve body 1; the valve core is designed to be in an upper-in and lower-out mode, so that impact of liquid on the valve core can be reduced;
a sleeve 4 is arranged in the liquid inlet cavity 11, the top area of the sleeve 4 is a sealing cylinder 41, and the bottom area of the sleeve 4 is a second flow through hole 42; the second flow through hole 42 is used for improving the fluid environment; the second flow through hole 42 can prevent cavitation, cavitation and protect the valve body and valve internals;
a valve core 3 is arranged in the sleeve 4, a valve seat 2 is arranged at the joint of the liquid outlet cavity 12 and the liquid inlet cavity 11, the bottom end of the valve core 3 is matched and sealed with the valve seat 2, and the valve core 3 is used for sealing and controlling the valve seat 2;
the outer wall of the top end of the valve core 3 is matched and sealed with the inner wall of the sealing cylinder 41, the valve core 3 is used for sealing the second flow through hole 42 from the upper part, so that the liquid is prevented from flowing upwards, and the liquid can only flow downwards;
the top of the valve core 3 is connected with a valve rod 8, the valve core 3, the valve seat 2, the sleeve 4 and the valve rod 8 are all located at the same central line, the top of the valve body 1 is connected with a valve cover 6, the valve rod 8 penetrates through the valve cover 6, the area surrounded by the valve core 3, the sealing cylinder 41 and the valve cover 6 is a balance cavity 5, the balance cavity 5 is communicated with the liquid outlet cavity 12, and the balance cavity 5 is used for balancing the pressure borne by the valve core 3; the balance cavity 5 can enable gas and liquid to flow into the valve core 3 and the sleeve 4 in advance, so that the upper pressure and the lower pressure of the valve core 3 are balanced, and the movement of the valve rod is more flexible and stable.
As an improvement of the above technical solution, the first flow through holes 311 and the second flow through holes 42 are both of a mesh distribution structure; the reticular flow holes can enable the flow of the liquid to be more uniformly dispersed, and reduce the impact.
As an improvement of the above technical solution, the liquid outlet chamber 12 is a sunken bowl-shaped structure, and the liquid inlet chamber 11 is a raised bowl-shaped structure; the bowl-shaped structure can increase the liquid storage capacity in the chamber and improve the liquid conveying capacity.
As an improvement of the above technical solution, the valve core 3 includes an inner mounting ring 31, an outer core 32 and a sealing ring 33, the inner mounting ring 31 is sleeved with the bottom end of the valve rod 8, the inner mounting ring 31 is provided with a first flow through hole 311, the inner mounting ring 31 is used as a connecting part of the valve core 3 and the valve rod 8, and the first flow through hole 311 is used as a connecting part of the balance cavity 5 and the liquid outlet cavity 12;
the outer core body 32 is arranged outside the sealing ring 33, the bottom end of the outer core body 32 is in fit sealing with the valve seat 2, the top end of the outer core body 32 is provided with the sealing ring 33, the sealing ring 33 is in fit sealing with the inner wall of the sealing cylinder 41, and the inner mounting ring 31, the outer core body 32 and the sealing ring 33 are all located at the same central line; the outer core body 32 is used for sealing the valve seat 2, and the sealing ring 33 is used for sealing the liquid from the top to prevent the liquid from flowing upwards.
As an improvement of the above technical solution, a plurality of first sealing rings 331 are sleeved on the outer wall of the sealing ring 33, and the first sealing rings 331 are attached to the inner wall of the sealing cylinder 41; the first seal ring 331 can increase the sealing performance between the seal ring 33 and the seal cylinder 41.
As an improvement of the above technical solution, the sleeve 4 is vertically fixed on the bottom surface of the valve cover 6, the bottom end of the sleeve 4 is attached to the valve seat 2, and a second sealing ring 9 is installed at the attachment position of the sleeve 4 and the valve seat 2; the sleeve 4 is connected with the valve cover 6 from top to bottom into a whole, and the second sealing ring 9 is additionally arranged at the lower part, so that the connection sealing performance of the sleeve 4 and the valve body 1 can be effectively improved.
As an improvement of the above technical solution, a limiting pipe 61 extends downwards from the center of the bottom surface of the valve cover 6, a guide sleeve 7 is installed inside the limiting pipe 61, and the valve rod 8 penetrates through the guide sleeve 7; the connection stability of the valve rod 8 can be improved by using the limiting pipe 61 and the guide sleeve 7.
As shown in fig. 1, fig. 1 shows a schematic structural diagram of a sleeve single-seat control valve with a balance chamber according to the present invention;
a liquid inlet cavity 11 is formed in the top of the interior of the valve body 1, the liquid inlet cavity 11 is arranged from outside to inside in an inclined mode, a liquid outlet cavity 12 is formed in the bottom of the interior of the valve body 1, and the liquid outlet cavity 12 is arranged from inside to outside in an inclined mode;
the connecting ports of the liquid inlet cavity 11 and the liquid outlet cavity 12 are located at the center line of the valve body 1, the connecting ports are connected with the valve seat 2, the valve core 3 is connected with the valve seat 2 in a matched mode, the valve rod 8 is connected with the valve core 3 in an internal mode, the sleeve 4 is attached to the outer wall of the valve core 3, and the sleeve 4 is fixed to the bottom face of the valve cover 6.
The utility model discloses when implementing:
when the valve is closed, the valve core 3 is embedded into the valve seat 2 in a fitting manner, the bottom surface of the outer core body 32 of the valve core 3 seals the valve seat 2, the sealing ring 33 is attached to the inner wall of the sealing cylinder 41 in a sealing manner, at the moment, air enters the balance cavity 5 through the first circulation hole 311, and gas is gathered above the valve core 3, so that the upper pressure and the lower pressure of the valve core 3 are balanced; the liquid inlet cavity 11 is filled with liquid, the liquid enters the sleeve 4 through the second flow through holes 42 distributed in a net shape, the entered liquid is blocked by the valve core 3 and the valve seat 2, and the upper part of the entered liquid is blocked by the sealing ring 33 and the first sealing ring 331, so that the liquid can not flow any more;
when the valve is opened, the pneumatic actuator drives the valve rod 8 to move upwards, the valve rod 8 drives the valve core 3 to move upwards integrally, the valve core 3 is separated from the valve seat 2, the sealing ring 33 moves upwards along the inner wall of the sealing cylinder 41, and liquid flows out of the liquid outlet cavity 12 through a gap between the valve core 3 and the valve seat 2, so that the liquid is discharged; the valve core is not blocked by the pressure in the liquid outlet cavity 12 in the moving process.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. Sleeve single seat control valve with balanced cavity, its characterized in that: the valve comprises a valve body (1), wherein a liquid outlet cavity (12) is formed in the bottom of the valve body (1), a liquid inlet cavity (11) is formed in the top of the valve body, a sleeve (4) is installed in the liquid inlet cavity (11), a sealing barrel (41) is arranged in the top area of the sleeve (4), and a second flow through hole (42) is formed in the bottom area of the sleeve (4); the second flow through hole (42) is used for improving the fluid environment;
a valve core (3) is arranged in the sleeve (4), a valve seat (2) is arranged at the joint of the liquid outlet cavity (12) and the liquid inlet cavity (11), the bottom end of the valve core (3) is matched and sealed with the valve seat (2), the outer wall of the top end of the valve core (3) is matched and sealed with the inner wall of the sealing cylinder (41), the top of the valve core (3) is connected with a valve rod (8), the valve core (3), the valve seat (2), the sleeve (4) and the valve rod (8) are all positioned at the same central line, the top of the valve body (1) is connected with a valve cover (6), the valve rod (8) passes through the valve cover (6), the area enclosed by the valve core (3), the sealing cylinder (41) and the valve cover (6) is a balance cavity (5), the balance cavity (5) is communicated with the liquid outlet cavity (12), and the balance cavity (5) is used for balancing the pressure borne by the valve core (3).
2. The sleeve single seat control valve with balancing chamber of claim 1, characterized in that: the liquid outlet cavity (12) is of a sunken bowl-shaped structure, and the liquid inlet cavity (11) is of an upward convex bowl-shaped structure.
3. The sleeve single seat control valve with balancing chamber according to claim 1 or 2, characterized in that: the valve core (3) comprises an inner mounting ring (31), an outer core body (32) and a sealing ring (33), the inner mounting ring (31) is sleeved with the bottom end of the valve rod (8), a first flow through hole (311) is formed in the inner mounting ring (31), the outer core body (32) is arranged outside the sealing ring (33), the bottom end of the outer core body (32) is matched and sealed with the valve seat (2), the sealing ring (33) is arranged at the top end of the outer core body (32), the sealing ring (33) is matched and sealed with the inner wall of the sealing barrel (41), and the inner mounting ring (31), the outer core body (32) and the sealing ring (33) are located on the same central line.
4. The spool single seat control valve with balancing chamber of claim 3, characterized in that: the first flow through holes (311) and the second flow through holes (42) are both in a net-shaped distribution structure.
5. The sleeve single seat control valve with balancing chamber of claim 4, characterized in that: the outer wall cover of sealing ring (33) is equipped with a plurality of first sealing washer (331), first sealing washer (331) with the inner wall laminating of sealed section of thick bamboo (41).
6. The sleeve single seat control valve with balancing chamber of claim 1, characterized in that: sleeve (4) vertical fixation in the bottom surface of valve gap (6), the bottom of sleeve (4) with disk seat (2) laminating, sleeve (4) with second sealing washer (9) are installed to the laminating department of disk seat (2).
7. The sleeve single seat control valve with balancing chamber of claim 6, characterized in that: the bottom surface center department downwardly extending of valve gap (6) has spacing pipe (61), the internally mounted of spacing pipe (61) has uide bushing (7), valve rod (8) run through in uide bushing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021164465.8U CN212616389U (en) | 2020-06-22 | 2020-06-22 | Sleeve single-seat control valve with balance chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021164465.8U CN212616389U (en) | 2020-06-22 | 2020-06-22 | Sleeve single-seat control valve with balance chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212616389U true CN212616389U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021164465.8U Active CN212616389U (en) | 2020-06-22 | 2020-06-22 | Sleeve single-seat control valve with balance chamber |
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| CN (1) | CN212616389U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779852A (en) * | 2020-06-22 | 2020-10-16 | 安徽康赛特流体控制科技有限公司 | Sleeve single-seat control valve with balance chamber |
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2020
- 2020-06-22 CN CN202021164465.8U patent/CN212616389U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779852A (en) * | 2020-06-22 | 2020-10-16 | 安徽康赛特流体控制科技有限公司 | Sleeve single-seat control valve with balance chamber |
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