High-precision pressure regulating valve device

Abstract

The utility model discloses a high-precision pressure regulating valve device, which relates to the technical field of valves, and comprises a pressure regulating valve body and a butt joint pipe, and the butt joint pipe and the pressure regulating valve body are respectively and fixedly connected with a first flange and a second flange. According to the sealing structure, due to the fact that the protruding ring is smaller than the extruding groove, the extruding groove is extruded to expand towards the two sides after being stressed, the sealing ring is driven to deform to abut against the side wall of the valve seat, secondary sealing is carried out through outward deformation abutting on the basis of single-time sealing of the sealing ring, and the sealing effect is good. Then the sealing effect is further improved in cooperation with sealing of the valve element, the situation that internal medium conveying is affected by leakage is avoided, pressure adjustment is more accurate, and better buffering and wear-resisting effects are achieved by grooving the interior of the sealing ring; and in the conveying and using process, most force can be avoided through self deformation, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-precision pressure regulating valve device. Background Art

[0002] The pressure regulating valve is also called self-operated balancing valve, flow control valve, flow controller, dynamic balancing valve, and flow balancing valve. It is an intuitive and simple flow regulation control device. The flow regulating valve used in the pipeline network can directly set the flow according to the design. The valve can automatically eliminate the flow deviation caused by the residual pressure head and pressure fluctuation of the pipeline under the action of water. No matter how the system pressure changes, the set flow is maintained unchanged. These functions of the valve enable the pipeline network flow regulation to be completed at one time, turning the network adjustment work into a simple flow distribution, and effectively solving the hydraulic imbalance of the pipeline network.

[0003] When the existing pressure regulating valve is used for a long time, the sealing ring on the valve core will wear due to repeated contact with the side wall of the valve seat. After being worn to a certain extent, the sealing performance will deteriorate, and the medium will seep out through the leakage point, which will lead to poor pressure control inside the valve body and affect the accuracy. In addition, when the valve body and the pipeline are connected through the flange, most of the time, the pipeline is lifted by hand to connect with the valve body, and then the bolt holes are aligned and fixed with bolts, which is time-consuming and labor-intensive. Therefore, the present application provides a high-precision pressure regulating valve device to meet the needs. Utility Model Content

[0004] The purpose of the present application is to provide a high-precision pressure regulating valve device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a high-precision pressure regulating valve device, comprising a pressure regulating valve body and a butt joint pipe, wherein a first flange and a second flange are fixedly connected to the butt joint pipe and the pressure regulating valve body, respectively, the first flange and the second flange are both provided with bolt grooves, and a quick-insert structure is also provided on the butt joint pipe;

[0006] The quick-insertion structure aligns the bolt grooves on the first flange and the second flange during the docking process between the docking tube and the pressure regulating valve body;

[0007] The pressure regulating valve body is provided with a valve seat and a valve stem inside, the valve stem is fixedly connected with a valve core, and the valve core is provided with a sealing structure;

[0008] The sealing structure is used to seal the valve seat.

[0009] Preferably, the quick-insertion structure comprises a spiral strip fixedly connected to the inside of the pressure regulating valve body, one end of the butt joint is fixedly connected to a plug-in tube, a track groove is provided on the plug-in tube, and the track groove matches the spiral strip;

[0010] The spiral strip is used to drive the butt joint pipe to rotate during the process of mating along the track groove, so that the bolt grooves on the first flange and the second flange are aligned.

[0011] Preferably, an oblique groove is provided at one end of the track groove;

[0012] A chamfered groove is provided at one end of the plug-in tube, and the inclined groove is provided at the chamfered groove.

[0013] Preferably, a bolt is threadedly connected inside the bolt groove;

[0014] The first flange and the second flange are connected by the bolts.

[0015] Preferably, the sealing structure comprises an abutment ring fixedly connected to the valve seat, and a sealing ring is sleeved on the valve core;

[0016] The sealing ring is clamped on the valve core through a limiting ring.

[0017] Preferably, a hollow groove is provided inside the sealing ring, and a convex ring and an extrusion groove are provided on the inner wall of the hollow groove, and the convex ring and the extrusion groove cooperate with each other;

[0018] The opening degree of the extrusion groove is smaller than that of the convex ring;

[0019] During the process of the convex ring being squeezed into the squeezing groove, the sealing ring is deformed and expands outwards.

[0020] Preferably, the pressure regulating valve body is also provided with a self-adjusting structure;

[0021] The self-adjusting structure automatically adjusts the pressure of the medium inside the two butt joints during the process of the pressure regulating valve body conveying the medium.

[0022] In summary, the technical effects and advantages of the utility model are:

[0023] 1. The utility model has a reasonable structure. Through the sealing structure, since the convex ring is smaller than the extrusion groove, the extrusion groove will be squeezed to expand to both sides after being subjected to force, thereby driving the sealing ring to deform and resist the side wall of the valve seat. On the basis of the single sealing of the sealing ring, a secondary seal is performed through outward deformation resistance, and then the sealing effect is further improved in conjunction with the sealing of the valve core, thereby avoiding the impact of leakage on the internal medium transportation, making the pressure regulation more accurate, and through the grooves inside the sealing ring, it still has better buffering and wear-resistant effects, and can avoid most of the force through its own deformation during transportation and use, thereby improving the service life.

[0024] 2. In the utility model, the quick-plug structure is provided so that the docking tube and the pressure regulating valve body do not need to be precisely aligned during the plug-in process. They only need to be plugged in. During the plug-in process, the bolt grooves of the first flange and the second flange will be automatically aligned with each other under the cooperation of the quick-plug structure, thereby improving the installation accuracy, reducing the installation burden, saving time and effort, and having high installation accuracy, avoiding the problem of unreliable installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of a partially cutaway three-dimensional structure;

[0028] Figure 3 It is a partially cutaway large-scale three-dimensional structural schematic diagram of the matching of the butt joint and the pressure regulating valve body in the utility model;

[0029] Figure 4 It is a partially cutaway large-scale three-dimensional structural schematic diagram of the valve core and valve seat in the utility model;

[0030] Figure 5 It is a partially cutaway enlarged three-dimensional structural schematic diagram of the cooperation between the sealing ring and the valve core in the utility model.

[0031] In the figure: 1. Pressure regulating valve body; 2. First flange; 3. Valve seat; 4. Valve stem; 5. Valve core; 6. Butt tube; 7. Second flange; 8. Bolt; 9. Plug tube; 10. Track groove; 11. Inclined groove; 12. Sealing ring; 13. Limiting ring; 14. Empty groove; 15. Convex ring; 16. Extrusion groove; 17. Spiral strip; 18. Bolt groove; 19. Resistance ring. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0035] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms are not directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0037] Example: Reference Figure 1-5A high-precision pressure regulating valve device is shown, comprising a pressure regulating valve body 1 and a butt pipe 6, wherein the butt pipe 6 and the pressure regulating valve body 1 are respectively fixedly connected with a first flange 2 and a second flange 7, the first flange 2 and the second flange 7 are both provided with a bolt groove 18, and the butt pipe 6 is also provided with a quick-insertion structure;

[0038] The quick-insertion structure aligns the bolt grooves 18 on the first flange 2 and the second flange 7 during the docking process between the docking tube 6 and the pressure regulating valve body 1;

[0039] A valve seat 3 and a valve stem 4 are arranged inside the pressure regulating valve body 1, a valve core 5 is fixedly connected to the valve stem 4, and a sealing structure is arranged on the valve core 5;

[0040] The sealing structure is used to seal the valve seat 3;

[0041] The pressure regulating valve body 1 is also provided with a self-adjusting structure, which is a prior art and will not be described in detail.

[0042] The self-adjusting structure automatically adjusts the pressure of the medium inside the two butt-joint pipes 6 during the process of the pressure regulating valve body 1 conveying the medium.

[0043] Align the butt joint pipe 6 with the pressure regulating valve body 1, and then insert the butt joint pipe 6 into the interior of the pressure regulating valve body 1. During the insertion process of the butt joint pipe 6, it will rotate through the quick-insertion structure, thereby driving the second flange 7 to rotate, so that the bolt grooves 18 on the first flange 2 and the second flange 7 are automatically aligned, and then they are docked and fixed, and then the butt joint pipe 6 at one end is used to transport the medium. After the medium enters the pressure regulating valve body 1, it is output through the other butt joint pipe 6. When a pressure difference occurs inside, the self-adjusting structure on the pressure regulating valve body 1 will adjust the position of the valve core 5 according to the specific transportation situation, thereby adjusting the opening and closing degree, and the sealing structure will seal the valve seat 3.

[0044] The quick-plug structure is set up so that the docking tube 6 and the pressure regulating valve body 1 do not need to be accurately aligned during the plug-in process. They only need to be plugged in. During the plug-in process, the bolt grooves 18 of the first flange 2 and the second flange 7 are automatically aligned with each other with the cooperation of the quick-plug structure, thereby improving the installation accuracy, reducing the installation burden, saving time and effort, and having high installation accuracy, avoiding the problem of unreliable installation.

[0045] like Figure 3 As shown, the quick-insert structure includes a spiral strip 17 fixedly connected to the inside of the pressure regulating valve body 1, and one end of the butt joint 6 is fixedly connected to a plug-in tube 9, and a track groove 10 is opened on the plug-in tube 9, and the track groove 10 cooperates with the spiral strip 17;

[0046] The spiral strip 17 is used to drive the butt joint 6 to rotate during the process of matching along the track groove 10, so that the bolt grooves 18 on the first flange 2 and the second flange 7 are aligned;

[0047] The bolt groove 18 is internally threaded with a bolt 8;

[0048] The first flange 2 and the second flange 7 are connected by bolts 8 .

[0049] The plug-in tube 9 and the pressure regulating valve body 1 are aligned and close to each other, and then when they come into contact with the spiral strip 17, they can continue to be pushed inward and rotate the docking tube 6, and the plug-in tube 9 rotates synchronously. When the track groove 10 and the spiral strip 17 are aligned, the spiral strip 17 will enter the inside of the track groove 10, and drive the docking tube 6 to rotate as the plug-in tube 9 goes deeper. When the plug-in tube 9 is fully inserted into the pressure regulating valve body 1, the bolt grooves 18 on the first flange 2 and the second flange 7 are aligned, so as to facilitate subsequent installation and fixation.

[0050] By setting the spiral strip 17 and the track groove 10, it is not necessary to accurately align the bolt grooves 18 on the first flange 2 and the second flange 7 during installation and docking. It is only necessary to insert the plug-in tube 9 into the pressure regulating valve body 1, and it will be automatically aligned through the cooperation of the spiral strip 17 and the track groove 10. After the plug-in tube 9 is inserted into the pressure regulating valve body 1, the plug-in tube 9 can also provide auxiliary support. There is no need to continue to hold the docking tube 6 by hand and it can be installed and fixed with the bolts 8. The installation is more accurate and saves time and effort.

[0051] like Figure 3 As shown, an oblique groove 11 is provided at one end of the track groove 10;

[0052] One end of the plug-in tube 9 is provided with a chamfered groove, and an inclined groove 11 is provided at the chamfered groove.

[0053] In summary, both the inclined groove 11 and the chamfered groove play an auxiliary guiding role, making it easier for the plug-in tube 9 to connect with the pressure regulating valve body 1 and the spiral strip 17 .

[0054] The chamfered groove reduces the head area of ​​the plug-in tube 9, making it easier to plug into the interior of the pressure regulating valve body 1, and the opening of the inclined groove 11 makes it unnecessary to precisely align the spiral strip 17 and the track groove 10. The spiral strip 17 will be directly guided along the inclined groove 11 into the interior of the track groove 10, making the installation and docking simpler and more convenient, and avoiding the impact of the docking effect due to a small docking point.

[0055] like Figure 4 As shown, the sealing structure includes a resistance ring 19 fixedly connected to the valve seat 3, and a sealing ring 12 is sleeved on the valve core 5;

[0056] The sealing ring 12 is clamped on the valve core 5 through a limiting ring 13 .

[0057] The sealing ring 12 provided on the valve core 5 will conflict with the conflict ring 19 on the valve seat 3, thereby sealing the valve seat 3 and prohibiting the medium from being transported. When the valve core 5 is away from the valve seat 3, the valve seat 3 opens and the medium continues to be transported. The flow rate is determined by the distance that the valve core 5 approaches or moves away from the valve seat 3.

[0058] The limiting ring 13 can clamp the sealing ring 12 on the valve core 5 to prevent the sealing ring 12 from falling off, and increase the resistance between the sealing ring 12 and the limiting ring 13 on the basis of the sealing of the valve core 5, further improving the sealing effect and making its anti-leakage effect better.

[0059] like Figure 5 As shown, a hollow groove 14 is provided inside the sealing ring 12, and a convex ring 15 and an extrusion groove 16 are provided on the inner wall of the hollow groove 14, and the convex ring 15 and the extrusion groove 16 are matched with each other;

[0060] The opening degree of the extrusion groove 16 is smaller than that of the convex ring 15;

[0061] When the protruding ring 15 is squeezed into the squeezing groove 16 , the sealing ring 12 is deformed and expanded outwards.

[0062] In summary, when the sealing ring 12 contacts the abutting ring 19 , the sealing ring 12 is deformed by force, and the convex ring 15 inside the hollow groove 14 contacts the inside of the extrusion groove 16 , thereby contacting the sealing ring 12 outward to expand it, thereby sealing.

[0063] By setting the convex ring 15, since the convex ring 15 is smaller than the extrusion groove 16, the extrusion groove 16 will be squeezed to expand to both sides after being subjected to force, thereby driving the sealing ring 12 to deform and resist the side wall of the valve seat 3. On the basis of the single sealing of the sealing ring 12, a secondary sealing is performed through outward deformation resistance, and then the sealing of the valve core 5 is cooperated to further improve the sealing effect, avoiding the influence of leakage on the internal medium transportation, making the pressure regulation more accurate, and the internal groove of the sealing ring 12 still has better buffering and wear-resistant effects, and can avoid most of the force through its own deformation during transportation and use, thereby improving the service life.

[0064] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A high-precision pressure regulating valve device, comprising a pressure regulating valve body (1) and a butt joint (6), characterized in that: The butt joint pipe (6) and the pressure regulating valve body (1) are respectively fixedly connected with a first flange (2) and a second flange (7); the first flange (2) and the second flange (7) are both provided with bolt grooves (18); and the butt joint pipe (6) is also provided with a quick-insertion structure; During the process of docking the butt joint pipe (6) and the pressure regulating valve body (1), the quick-insertion structure drives the butt joint pipe to align the bolt grooves (18) on the first flange (2) and the second flange (7); The pressure regulating valve body (1) is provided with a valve seat (3) and a valve stem (4), the valve stem (4) is fixedly connected with a valve core (5), and the valve core (5) is provided with a sealing structure; The sealing structure is used to seal the valve seat (3).

2. A high-precision pressure regulating valve device according to claim 1, characterized in that: The quick-insertion structure comprises a spiral strip (17) fixedly connected to the inside of the pressure regulating valve body (1); one end of the butt joint pipe (6) is fixedly connected to a plug-in pipe (9); a track groove (10) is provided on the plug-in pipe (9); and the track groove (10) matches the spiral strip (17); The spiral strip (17) is used to drive the butt joint (6) to rotate during the process of fitting along the track groove (10), so that the bolt grooves (18) on the first flange (2) and the second flange (7) are aligned.

3. A high-precision pressure regulating valve device according to claim 2, characterized in that: An oblique groove (11) is formed at one end of the track groove (10); One end of the plug-in tube (9) is provided with a chamfered groove, and the inclined groove (11) is provided at the chamfered groove.

4. A high-precision pressure regulating valve device according to claim 1, characterized in that: The bolt groove (18) is internally threadedly connected with a bolt (8); The first flange (2) and the second flange (7) are connected via the bolts (8).

5. A high-precision pressure regulating valve device according to claim 1, characterized in that: The sealing structure comprises a resistance ring (19) fixedly connected to the valve seat (3), and a sealing ring (12) is sleeved on the valve core (5); The sealing ring (12) is clamped on the valve core (5) via a limiting ring (13).

6. A high-precision pressure regulating valve device according to claim 5, characterized in that: The sealing ring (12) is provided with an empty groove (14) inside, and the inner wall of the empty groove (14) is provided with a convex ring (15) and an extrusion groove (16), and the convex ring (15) and the extrusion groove (16) are matched with each other; The opening degree of the extrusion groove (16) is smaller than that of the convex ring (15); When the convex ring (15) is squeezed into the extrusion groove (16), the sealing ring (12) is deformed and expands outwards.

7. A high-precision pressure regulating valve device according to claim 1, characterized in that: Furthermore, the pressure regulating valve body (1) is also provided with a self-adjusting structure; The self-adjusting structure automatically adjusts the pressure of the medium inside the two butt joints (6) during the process of the pressure regulating valve body (1) conveying the medium.

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