CN215214865U - Three-way branch/confluence micro flow regulating valve - Google Patents
Three-way branch/confluence micro flow regulating valve Download PDFInfo
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- CN215214865U CN215214865U CN202121167364.0U CN202121167364U CN215214865U CN 215214865 U CN215214865 U CN 215214865U CN 202121167364 U CN202121167364 U CN 202121167364U CN 215214865 U CN215214865 U CN 215214865U
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Abstract
The utility model provides a little flow control valve of tee bend branch/confluence which characterized in that: an upper valve seat is arranged between the lower cavity and the upper cavity and is in threaded sealing connection with the valve body; a lower valve seat is arranged in a third flow channel of the lower valve cover, and the lower valve seat is in threaded sealing connection with the lower valve cover; the valve core is arranged between the upper valve seat and the lower valve seat and comprises a core body and an upper guide pillar and a lower guide pillar which are arranged at the upper end and the lower end of the core body, a sealing surface which can form sealing fit with the upper valve seat and the lower valve seat is formed at the upper end and the lower end of the core body, the upper guide pillar is inserted into the upper valve seat and is in sealing sliding fit with the upper valve body, and a plurality of first adjusting guide grooves which are longitudinally arranged are formed in the side wall of the upper guide pillar; the lower guide pillar is inserted into the lower valve seat and is in sealing sliding fit with the lower valve seat, and the side wall of the lower guide pillar is provided with a plurality of second adjusting guide grooves which are longitudinally arranged. The advantages are that: 1. the installation and the operation are very convenient, the later-period disassembly and maintenance are facilitated, and the maintenance cost is greatly reduced; 2. not only the regulation precision is high, but also the requirement of micro flow regulation can be met.
Description
Technical Field
The utility model relates to a flow control valve, concretely relates to small flow control valve of tee bend branch/confluence.
Background
The three-way regulating valve has three inlets and outlets connected to pipeline, and is equivalent to two single-seat valves combined into one body, and can be divided into flow-merging valve (two inlets and one outlet) and flow-dividing valve (one inlet and two outlets) according to function.
But current three-way control valve structure is comparatively complicated, and not only the dismouting is inconvenient, and later maintenance is with high costs, and flow control precision is relatively poor moreover, is difficult to satisfy the reliable regulation of small flow.
SUMMERY OF THE UTILITY MODEL
In order to overcome the deficiency of the background art, the utility model provides a three-way branch/confluence small flow control valve.
The utility model discloses the technical scheme who adopts: a three-way splitting/converging micro flow regulating valve comprises a valve body, an upper valve cover, a lower valve cover, a valve core and a valve rod, wherein the valve body comprises a lower cavity, an upper cavity, a first flow channel communicated with the lower cavity and a second flow channel communicated with the upper cavity; an upper valve seat is arranged between the lower cavity and the upper cavity and is in threaded sealing connection with the valve body; a lower valve seat is installed in a third flow channel of the lower valve cover, and the lower valve seat is in threaded sealing connection with the lower valve cover; the valve core is arranged between an upper valve seat and a lower valve seat and comprises a core body and an upper guide pillar and a lower guide pillar which are arranged at the upper end and the lower end of the core body, the upper end and the lower end of the core body are provided with sealing surfaces which can form sealing fit with the upper valve seat and the lower valve seat, the upper guide pillar is inserted into the upper valve seat and is in sealing sliding fit with the upper valve body, and the side wall of the upper guide pillar is provided with a plurality of first adjusting guide grooves which are longitudinally arranged; the lower guide pillar is inserted into the lower valve seat and is in sealing sliding fit with the lower valve seat, and a plurality of second adjusting guide grooves which are longitudinally arranged are formed in the side wall of the lower guide pillar.
The first guiding gutter of adjusting all is equipped with 3 with the second guiding gutter of adjusting.
The end parts of the first adjusting guide groove and the second adjusting guide groove are both arc-shaped structures.
A first annular boss is formed on the upper valve seat, and a first sealing surface in sealing fit with the valve body is formed at the lower end of the first annular boss.
And a second annular boss is formed on the lower valve seat, and a second sealing surface which is in sealing fit with the lower valve cover is formed at the upper end of the second annular boss.
The upper valve cover is in threaded connection with the valve body.
The lower valve cover and the valve body are welded into an integral structure.
The valve rod and the valve core are integrally formed.
A packing sealing component is also arranged between the upper valve cover and the valve rod; the upper valve cover is sequentially provided with a packing groove, a gasket groove and a gland groove from bottom to top; the packing seal assembly comprises seal packing, a gasket and a packing gland, the seal packing is arranged in a packing groove, the gasket is arranged in a gasket groove, the packing gland is in threaded connection with a gland groove, and the packing gasket is driven to compress the seal packing; a limit inclined plane is formed between the packing groove and the gasket groove, the gasket is in a convex shape, a convex shoulder of the gasket is in an inclined plane structure matched with the limit inclined plane, and the convex shoulder of the gasket and the limit inclined plane form limit matching.
A first sealing ring is arranged between the gasket and the upper valve cover, and a second sealing ring is arranged between the gasket and the valve rod.
The utility model has the advantages that: 1. lower disk seat all passes through screw-thread fit's connected mode with last disk seat, and the installation operation is very convenient, more is favorable to the dismantlement maintenance in later stage, greatly reduced maintenance cost.
2. Flow regulation is realized through first regulation guiding gutter and second regulation guiding gutter, not only adjusts the precision height, can satisfy small flow regulation's requirement moreover.
Drawings
Fig. 1 is a schematic structural view of a three-way branch/confluence micro flow control valve according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the valve rod and the valve core according to the embodiment of the present invention.
Fig. 3 is an enlarged schematic view at I in fig. 2.
Fig. 4 is an enlarged schematic view at II in fig. 1.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
as shown in the figure, the three-way branch/confluence micro flow regulating valve comprises a valve body 1, an upper valve cover 2, a lower valve cover 3, a valve core 4, a valve rod 5, an upper valve seat 6 and a lower valve seat 7.
The valve body 1 comprises a lower cavity 11, an upper cavity 12, a first flow passage 13 communicated with the lower cavity 11, and a second flow passage 14 communicated with the upper cavity 12.
The upper valve cover 2 is installed at the upper end of the valve body 1, wherein the upper valve cover 2 is in threaded connection with the valve body 1.
The lower valve cover 3 is installed at the lower end of the valve body 1, and a third flow channel 31 communicated with the lower cavity 11 is formed, wherein the lower valve cover 3 and the valve body 1 are directly welded into an integral structure.
The valve rod penetrates through the upper valve cover 2 through the 5 to be connected with the valve core 4, wherein the valve rod 5 and the valve core 4 are integrally formed.
The upper valve seat 6 is installed between the lower cavity 11 and the upper cavity 12 and is in threaded sealing connection with the valve body 1, and the lower valve seat 7 is installed in the third flow channel 31 of the lower valve cover 3 and is in threaded sealing connection with the lower valve cover 3.
The valve core 4 is arranged between an upper valve seat 6 and a lower valve seat 7 and comprises a core body 41 and an upper guide post 42 and a lower guide post 43 which are arranged at the upper end and the lower end of the core body 41, a sealing surface 411 which can form sealing fit with the upper valve seat 6 and the lower valve seat 7 is formed at the upper end and the lower end of the core body 41, the upper guide post 42 is inserted into the upper valve seat 6 and is in sealing sliding fit with the upper valve seat 6, and 3 first adjusting guide grooves 421 which are longitudinally arranged are arranged on the side wall of the upper guide post 42; the lower guide post 43 is inserted into the lower valve seat 7 and is in sealing sliding fit with the lower valve seat 7, and 3 second adjusting guide grooves 431 are longitudinally arranged on the side wall of the lower guide post 43.
When the three-way splitting/converging micro flow control valve is assembled, the lower valve seat 7 is installed in the third flow channel 31 of the lower valve cover 3, the valve core 4 extends into the valve body 1, the lower guide pillar 43 of the valve core 4 extends into the lower valve seat 7, the upper valve seat 6 is installed inside the valve body 1, the upper guide pillar 42 of the valve core 4 is sleeved with the upper valve seat 6, the valve cover is installed at the upper end of the valve body 1 at last, the lower valve seat 7, the upper valve seat 6 and the valve cover 2 are connected in a threaded fit mode, the mounting operation is very convenient, the later-stage dismounting and maintenance are facilitated, and the maintenance cost is greatly reduced.
The three-way splitting/merging micro flow regulating valve can be used for splitting operation and merging operation, when the three-way splitting/merging micro flow regulating valve is used for splitting, the first flow channel 13 is used as a medium inlet flow channel, the second flow channel 14 and the third flow channel 31 are used as two outlet flow channels, the splitting purpose is realized, when the three-way splitting/merging micro flow regulating valve is used for merging, the first flow channel 13 is used as a medium outlet flow channel, and the second flow channel 14 and the third flow channel 31 are used as two inlet flow channels, the merging purpose is realized.
When the valve body 4 moves upward to maintain sealing with the upper valve seat 6, the second regulation groove 431 is higher than the lower valve seat 7, and the first flow passage 13 can be communicated with the third flow passage 31 only through the second regulation groove 431.
When the valve core 4 moves downwards, the first adjusting guide groove 421 is lower than the upper valve seat 6 along with the valve core, so that the first flow passage 13 can be communicated with the second flow passage 14 through the first adjusting guide groove 421, along with the continuous downward movement of the valve core 4, the area of the first adjusting guide groove 421 lower than the upper valve seat 6 is larger and larger, and the flow between the first flow passage 13 and the second flow passage 14 is also larger and larger; meanwhile, the second regulating flow guide groove 431 also moves downward along with the valve element, so that the area of the second regulating flow guide groove above the lower valve seat 7 is smaller and smaller, and the flow between the first flow passage 13 and the third flow passage 31 is also smaller and smaller.
When the valve element 4 moves downward to maintain sealing with the lower valve seat 7, the first regulation groove 421 is lower than the upper valve seat 6, and the first flow passage 13 can be communicated with the second flow passage 13 only through the first regulation groove 421.
When the valve core 4 moves upwards, the second regulating guide groove 431 is higher than the lower valve seat 7 upwards along with the valve core, so that the first flow channel 13 can be communicated with the third flow channel 31 through the second regulating guide groove 431, the area of the second regulating guide groove 431 higher than the lower valve seat 7 is larger and larger along with the continuous upward movement of the valve core 4, and the flow between the first flow channel 13 and the third flow channel 31 is also larger and larger; meanwhile, the first regulating channel 421 will also move upward with the valve core, so that the area of the first regulating channel lower than the upper valve seat 6 is smaller and smaller, and the flow rate between the first flow passage 13 and the second flow passage 13 is also smaller and smaller.
Through the position that changes case 4, and then change the position that first regulation guiding gutter 421 and second adjusted guiding gutter 431, can realize flow control, adjust guiding gutter 431 through first regulation guiding gutter 421 and second, not only adjust the precision height, can satisfy small flow control's requirement moreover.
Wherein, first regulation guiding gutter 421 all is the arc structure with the tip of second regulation guiding gutter 431, and the arc structure can reduce medium impurity and remain to pile up, effectively avoids appearing the jam problem, ensures that flow control is reliable and stable precision is high.
A first annular boss 61 is formed on the upper valve seat 6, and a first sealing surface 62 which is in sealing fit with the valve body 1 is formed at the lower end of the first annular boss 61; when the upper valve seat 6 is screwed with the valve body 1 through threaded fit, the first sealing surface 62 is tightly attached to the valve body 1 to form sealing, so that a double sealing effect is achieved between the upper valve seat 6 and the valve body 1, the sealing performance is further improved, and zero leakage is ensured.
Similarly, a second annular boss 71 is formed on the lower valve seat 7, a second sealing surface 72 in sealing fit with the lower valve cover 3 is formed at the upper end of the second annular boss 71, and when the lower valve seat 7 and the lower valve cover 3 are screwed in a threaded fit manner, the second sealing surface 72 is tightly attached to the lower valve cover 3 to form a seal, so that a double sealing effect is also achieved between the lower valve seat 7 and the lower valve cover 3, the sealing performance is further improved, and zero leakage is ensured.
In addition, a packing sealing assembly 8 is further arranged between the upper valve cover 2 and the valve rod 5, and the upper valve cover 2 and the valve rod 5 are sealed through the packing sealing assembly 8.
The upper valve cover 2 is sequentially provided with a packing groove 21, a gasket groove 22 and a gland groove 23 from bottom to top; the packing seal assembly 8 comprises a seal packing 81, a gasket 82 and a packing gland 83, wherein the seal packing 81 is arranged in the packing groove 21, the gasket 82 is arranged in the gasket groove 22, the packing gland 83 is in threaded connection with the gland groove 23, and drives the packing gasket 82 to compress the seal packing 81, so that the seal packing 81 can be attached to the valve rod 5, and sealing is guaranteed.
A limit inclined plane 24 is formed between the packing groove 21 and the gasket groove 22, the gasket 82 is in a shape of a convex letter, the convex shoulder 821 of the gasket 82 is in an inclined plane structure matched with the limit inclined plane 24, the convex shoulder 821 of the gasket 82 and the limit inclined plane 24 form limit matching, through the limit inclined plane 24, a limit effect on the gasket 82 can be achieved, failure of the sealing packing 81 due to propping and explosion caused by over-tightening of the pressing of the packing gland 83 is avoided, meanwhile, the central positioning of the gasket 82 is ensured through inclined plane guiding, the stress of the sealing packing 81 is more balanced and stable, the structure of the packing sealing assembly 8 is more stable and reliable, and the sealing performance is ensured.
Further, a first sealing ring 84 is arranged between the gasket 82 and the upper valve cover 2, a second sealing ring 85 is arranged between the gasket 82 and the valve rod 5, and the sealing effect between the valve rod 5 and the valve cover 2 is further ensured through the first sealing ring 84 and the second sealing ring 85.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
Claims (10)
1. A three-way splitting/converging micro flow regulating valve comprises a valve body (1), an upper valve cover (2), a lower valve cover (3), a valve core (4) and a valve rod (5), wherein the valve body (1) comprises a lower cavity (11), an upper cavity (12), a first flow channel (13) communicated with the lower cavity (11) and a second flow channel (14) communicated with the upper cavity (12), the upper valve cover (2) is installed at the upper end of the valve body (1), the lower valve cover (3) is installed at the lower end of the valve body (1) and is provided with a third flow channel (31) communicated with the lower cavity (11), and the valve rod (5) penetrates through the upper valve cover (2) and is connected with the valve core (4);
the method is characterized in that: an upper valve seat (6) is arranged between the lower cavity (11) and the upper cavity (12), and the upper valve seat (6) is in threaded sealing connection with the valve body (1); a lower valve seat (7) is installed in a third flow channel (31) of the lower valve cover (3), and the lower valve seat (7) is in threaded sealing connection with the lower valve cover (3);
the valve core (4) is arranged between an upper valve seat (6) and a lower valve seat (7) and comprises a core body (41) and an upper guide post (42) and a lower guide post (43) which are arranged at the upper end and the lower end of the core body (41), a sealing surface (411) which can be in sealing fit with the upper valve seat (6) and the lower valve seat (7) is formed at the upper end and the lower end of the core body (41), the upper guide post (42) is inserted into the upper valve seat (6) and is in sealing sliding fit with the upper valve seat (6), and a plurality of first adjusting guide grooves (421) which are longitudinally arranged are formed in the side wall of the upper guide post (42); the lower guide post (43) is inserted into the lower valve seat (7) and is in sealing sliding fit with the lower valve seat (7), and a plurality of second adjusting guide grooves (431) which are longitudinally arranged are formed in the side wall of the lower guide post (43).
2. The three-way branching/joining micro flow rate adjusting valve according to claim 1, characterized in that: the first adjusting guide groove (421) and the second adjusting guide groove (431) are provided with 3 guide grooves.
3. The three-way branching/joining micro flow rate adjusting valve according to claim 1, characterized in that: the end parts of the first adjusting guide groove (421) and the second adjusting guide groove (431) are both arc-shaped structures.
4. The three-way branching/joining micro flow rate adjusting valve according to claim 1, characterized in that: a first annular boss (61) is formed on the upper valve seat (6), and a first sealing surface (62) in sealing fit with the valve body (1) is formed at the lower end of the first annular boss (61).
5. The three-way branching/joining micro flow rate adjusting valve according to claim 1, characterized in that: and a second annular boss (71) is formed on the lower valve seat (7), and a second sealing surface (72) which is in sealing fit with the lower valve cover (3) is formed at the upper end of the second annular boss (71).
6. The three-way branching/joining micro flow rate adjusting valve according to claim 1, characterized in that: the upper valve cover (2) is in threaded connection with the valve body (1).
7. The three-way branching/joining micro flow rate adjusting valve according to claim 1, characterized in that: the lower valve cover (3) and the valve body (1) are welded into an integral structure.
8. The three-way branching/joining micro flow rate adjusting valve according to claim 1, characterized in that: the valve rod (5) and the valve core (4) are integrally formed.
9. The three-way branching/joining micro flow rate adjusting valve according to claim 1, characterized in that: a packing sealing component (8) is also arranged between the upper valve cover (2) and the valve rod (5); a packing groove (21), a gasket groove (22) and a gland groove (23) are sequentially formed on the upper valve cover (2) from bottom to top;
the packing seal assembly (8) comprises a seal packing (81), a gasket (82) and a packing gland (83), wherein the seal packing (81) is arranged in a packing groove (21), the gasket (82) is arranged in a gasket groove (22), the packing gland (83) is in threaded connection with a gland groove (23) and drives the packing gasket (82) to compress the seal packing (81);
a limiting inclined plane (24) is formed between the packing groove (21) and the gasket groove (22), the gasket (82) is in a convex shape, a convex shoulder (821) of the gasket (82) is in an inclined plane structure matched with the limiting inclined plane (24), and the convex shoulder (821) of the gasket (82) and the limiting inclined plane (24) form limiting fit.
10. The three-way branching/joining micro flow rate adjusting valve according to claim 9, characterized in that: be equipped with first sealing washer (84) between packing ring (82) and upper valve lid (2), be equipped with second sealing washer (85) between packing ring (82) and valve rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121167364.0U CN215214865U (en) | 2021-05-28 | 2021-05-28 | Three-way branch/confluence micro flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121167364.0U CN215214865U (en) | 2021-05-28 | 2021-05-28 | Three-way branch/confluence micro flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215214865U true CN215214865U (en) | 2021-12-17 |
Family
ID=79421519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121167364.0U Active CN215214865U (en) | 2021-05-28 | 2021-05-28 | Three-way branch/confluence micro flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215214865U (en) |
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2021
- 2021-05-28 CN CN202121167364.0U patent/CN215214865U/en active Active
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