Novel stainless steel electric butterfly valve

Abstract

The utility model relates to a novel stainless steel electric butterfly valve and belongs to the technical field of electric butterfly valves, the novel stainless steel electric butterfly valve comprises a valve body, a valve clack located in the valve body and an electric component used for pulling the valve clack, a sealing ring used for making contact with the inner wall of the valve body is installed outside the valve clack, and a connecting structure is arranged between the sealing ring and the valve clack. The connecting structure comprises a sealing cover buckled on one side face of the valve clack, and a connecting column is arranged on one side face of the valve clack in a protruding mode. According to the novel stainless steel electric butterfly valve, the sealing ring is arranged outside the valve clack in the mode that the sealing cover and the valve clack are connected in a mutual extrusion mode, and meanwhile the sealing cover is provided with an extrusion ring, so that the mutual extrusion effect of the sealing cover and the valve clack is improved, and the sealing ring can expand outwards to offset elastic failure caused by long-term use of the sealing ring; and during maintenance, the fitting degree between the sealing ring and the valve body can be enhanced only by screwing a bolt for connecting the sealing cover and the valve clack, so that the overall use convenience of the device is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of electric butterfly valves, and in particular to a novel stainless steel electric butterfly valve. Background Art

[0002] The electric butterfly valve is a valve that is opened and closed by an electric actuator. It is usually used in fluid control systems. It has a simple structure and is easy to operate. It can be remotely controlled and automatically controlled. It is suitable for fluid pipeline systems in various industrial fields.

[0003] After searching the utility model with the announcement number CN220910502U, an electric flange butterfly valve with good sealing performance is found, including a valve body, an indicator cover is fixedly provided on the top of the valve body, a rotating shaft is provided inside the indicator cover, a butterfly valve is fixedly provided on the rotating shaft body, a No. 1 slide groove is provided on both sides of the interior of the butterfly valve, and a sealing device is slidably provided inside the two No. 1 slide grooves, and the sealing device includes a slider and a No. 2 slide groove, a connecting rod is fixedly provided on one side of the slider, a sealing strip is fixedly provided on the other end of the connecting rod, and a No. 1 spring is fixedly provided on the side of the sealing strip close to the slider. In the utility model, when closing the butterfly valve, the slider can push the connecting rod so that the sealing strip fits with the inside of the valve body. When the butterfly valve needs to be opened, the sealing strip is retracted and then the butterfly valve is rotated, which can avoid the wear of the sealing strip and the inside of the valve body and make the sealing performance better.

[0004] The above patent enhances the fit of the sealing strip by using a spring to squeeze the sealing strip. However, since several springs are arranged evenly in a circle, the sealing strip only enhances the fit at the spring squeeze point, while the fit of the sealing strip between adjacent springs cannot meet the fit requirements. In this regard, a new stainless steel electric butterfly valve is proposed to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides a new stainless steel electric butterfly valve, which has the advantages of improving the sealing between the butterfly plate and the valve seat.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a new stainless steel electric butterfly valve, comprising a valve body, a valve disc located in the valve body, and an electric component for pulling the valve disc, a sealing ring for contacting the inner wall of the valve body is installed on the outside of the valve disc, and a connecting structure is provided between the sealing ring and the valve disc;

[0007] The connection structure includes a sealing cover that is buckled on one side of the valve flap, a connecting column protruding from one side of the valve flap, and an extrusion ring fixedly installed on one side of the sealing cover facing the valve flap. The extrusion ring is truncated cone-shaped, and one side of the extrusion ring that contacts the sealing ring is an inclined surface.

[0008] Furthermore, the electric component includes an electric motor as a power source, and a valve stem fixedly connected to a power end of the electric motor, wherein the valve stem is connected to the valve flap.

[0009] Furthermore, a connecting ring is fixedly mounted on the rear side of the valve disc, and the valve stem passes through the connecting ring.

[0010] Furthermore, a valve bottom is installed at the bottom of the valve body, and the valve stem rotates relative to the valve bottom.

[0011] Furthermore, a groove is recessed in the middle of the extrusion ring, and the connecting column and the groove in the middle of the extrusion ring are plugged into each other.

[0012] Furthermore, a positioning pin facing the valve flap is fixedly mounted on the cover, a positioning hole for inserting the positioning pin is formed on the connecting column, and the positioning pin is plugged into the positioning hole.

[0013] Furthermore, a cylinder is fixedly installed in the positioning hole, and the cylinder passes through and extends to one end of the cover.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This new stainless steel electric butterfly valve is arranged on the outside of the valve disc by arranging a sealing ring through mutual extrusion connection between the cover and the valve disc, and at the same time an extrusion ring is arranged on the cover to improve the mutual extrusion effect between the cover and the valve disc, so that the sealing ring can expand outward to offset the elastic failure caused by long-term use of the sealing ring. During maintenance, the fit between the sealing ring and the valve body can be strengthened by simply tightening the bolts connecting the cover and the valve disc, thereby enhancing the overall convenience of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a schematic diagram of the structure of the cover connecting the valve disc in this application;

[0018] Figure 3 This is a schematic diagram of the structure of the connecting column of this application;

[0019] Figure 4 This is a three-dimensional diagram of the structure of the cover of this application.

[0020] In the figure: 1. valve body; 2. motor; 3. valve stem; 4. valve bottom; 5. valve disc; 6. connecting ring; 7. connecting column; 8. sealing ring; 9. positioning hole; 10. sealing cover; 11. groove; 12. positioning pin; 13. cylinder; 14. extrusion ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] See also Figure 1-4 A new type of stainless steel electric butterfly valve in this embodiment includes a valve body 1, a valve disc 5 located in the valve body 1, and an electric component for pulling the valve disc 5.

[0023] Specifically, the electric component includes an electric motor 2 as a power source, a valve stem 3 fixedly connected to the power end of the electric motor 2, and the valve stem 3 is connected to the valve flap 5. The valve flap 5 can be driven to rotate and adjust in the valve body 1 through the rotation of the valve stem 3.

[0024] In this embodiment, a connecting ring 6 is fixedly mounted on the rear side of the valve disc 5 , and the valve stem 3 penetrates the connecting ring 6 to achieve mutual connection with the valve disc 5 .

[0025] It should be noted that a valve bottom 4 is also installed at the bottom of the valve body 1 , and the valve stem 3 is rotated relative to the valve bottom 4 , thereby improving the stability of the rotation adjustment.

[0026] In order to improve the close fit of the valve flap 5 with respect to the valve body 1 , a sealing ring 8 for contacting the inner wall of the valve body 1 is installed outside the valve flap 5 in this embodiment, and a connecting structure is provided between the sealing ring 8 and the valve flap 5 .

[0027] In this embodiment, the connection structure includes a cover 10 that is buckled onto one side of the valve flap 5 . The cover 10 is close to the valve flap 5 , so that a sealing ring 8 is located between the valve flap 5 and the cover 10 .

[0028] It should be noted that a connecting column 7 is protruding from one side surface of the valve disc 5, and a squeeze ring 14 is fixedly installed on the cover 10 facing the side surface of the valve disc 5. A groove 11 is recessed in the middle of the squeeze ring 14, and the connecting column 7 and the groove 11 in the middle of the squeeze ring 14 are plugged into each other.

[0029] This design allows the valve flap 5 and the sealing cover 10 to be correspondingly engaged with each other. At the same time, since the diameter of the connecting column 7 is smaller than the diameter of the valve flap 5, an annular installation space can be provided on the valve flap 5 for installing the sealing ring 8.

[0030] In the present application, the sealing ring 8 is arranged on the outside of the valve disc 5 by adopting the mutual extrusion connection mode of the cover 10 and the valve disc 5, and the cover 10 is provided with an extrusion ring 14, so that the mutual extrusion effect of the cover 10 and the valve disc 5 is improved, so that the sealing ring 8 can expand outward to offset the elastic failure caused by the long-term use of the sealing ring 8. During maintenance, the fit between the sealing ring 10 and the valve body 5 can be strengthened by tightening the bolts connecting the cover 10 and the valve disc 5, so that the overall convenience of use of the device is enhanced.

[0031] The extrusion ring 14 in this embodiment is in the shape of a truncated cone, and the side surface of the extrusion ring 14 that contacts the sealing ring 8 is an inclined surface, so that the extrusion effect of the extrusion ring 14 relative to the sealing ring 8 can be improved by strengthening the tightness of the connection between the cover 10 and the valve disc 5, thereby improving the sealing effect of the sealing ring 8.

[0032] In this embodiment, a positioning pin 12 facing the valve disc 5 is fixedly installed on the cover 10, and a positioning hole 9 for inserting the positioning pin 12 is opened on the connecting column 7. The positioning pin 12 is inserted into the positioning hole 9, wherein a cylinder 13 is also fixedly installed in the positioning hole 9. The cylinder 13 passes through and extends to one end of the cover 10, and the cover 10 and the surface of the valve disc 5 can be connected and fixed to each other by bolts.

[0033] The working principle of the above embodiment is:

[0034] By fitting the sealing ring 8 on one side of the valve disc 5 and locating it on the outer side of the connecting column 7, the cover 10 is buckled relative to the connecting column 7 on the surface of the valve disc 5. During the buckling process, the extrusion ring 14 on the cover 10 is inserted into the connecting column 7, and is mutually inserted through the positioning pin 12 on the cover 10 and the positioning hole 9 on the connecting column 7, so that the cover 10 and the valve disc 5 are tightly buckled with each other. At this time, the sealing ring 8 is mutually squeezed by the cover 10 and the valve disc 5 to complete the installation and extend to the outside of the valve disc 5. At this time, the position of the cover 10 is fixed by connecting one side of the cover 10 and the cylinder 13 through bolts. The cover 10 on one side of the valve disc 5 is subjected to the medium pressure in the pipeline, so that the cover 10 is slightly deformed. The extrusion ring 14 on the cover 10 squeezes the sealing ring 8 through its inclined portion, thereby increasing the elongation of the sealing ring 8 relative to the outer side of the valve disc 5 and improving the extrusion tightness of the sealing ring 8 relative to the inner wall of the valve body 1.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new stainless steel electric butterfly valve, comprising a valve body (1), a valve flap (5) located in the valve body (1) and an electric component for pulling the valve flap (5), characterized in that: A sealing ring (8) for contacting the inner wall of the valve body (1) is installed on the outside of the valve flap (5), and a connecting structure is provided between the sealing ring (8) and the valve flap (5); The connection structure comprises a sealing cover (10) which is buckled on a side surface of the valve flap (5); a connecting column (7) is protruded on one side surface of the valve flap (5); an extrusion ring (14) is fixedly mounted on the sealing cover (10) facing the side surface of the valve flap (5); the extrusion ring (14) is in a truncated cone shape; and a side surface of the extrusion ring (14) which contacts the sealing ring (8) is an inclined surface.

2. A new type of stainless steel electric butterfly valve according to claim 1, characterized in that: The electric component comprises an electric motor (2) as a power source, a valve stem (3) fixedly connected to a power end of the electric motor (2), and the valve stem (3) is connected to the valve flap (5).

3. A new type of stainless steel electric butterfly valve according to claim 2, characterized in that: A connecting ring (6) is fixedly mounted on the rear side of the valve flap (5), and the valve stem (3) passes through the connecting ring (6).

4. A new type of stainless steel electric butterfly valve according to claim 2, characterized in that: A valve bottom (4) is also installed at the bottom of the valve body (1), and the valve stem (3) rotates relative to the valve bottom (4).

5. According to claim 1, the new stainless steel electric butterfly valve is characterized by: A groove (11) is recessed in the middle of the extrusion ring (14), and the connecting column (7) and the groove (11) in the middle of the extrusion ring (14) are plugged into each other.

6. The new stainless steel electric butterfly valve according to claim 1 is characterized by: The sealing cover (10) is also fixedly mounted with a positioning pin (12) facing the valve flap (5), and the connecting column (7) is provided with a positioning hole (9) for inserting the positioning pin (12), and the positioning pin (12) is plugged into the positioning hole (9).

7. A new type of stainless steel electric butterfly valve according to claim 6, characterized in that: A cylinder (13) is also fixedly installed in the positioning hole (9), and the cylinder (13) passes through and extends to one end of the sealing cover (10).

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