Flange connection hard seal ball valve structure

Abstract

The utility model relates to a ball valve structure with flange connection and hard sealing. The ball valve structure comprises a valve body, a limiting cylinder and a second butt joint disc. The two ends of the valve body are in butt joint with a first butt joint disc, the limiting cylinder is in butt joint outside the first butt joint disc, and the second butt joint disc is in butt joint with the end, away from the valve body, of the first butt joint disc. According to the flange connection hard sealing ball valve structure, when a second butt joint disc and a valve body are in a butt joint completion state, a linkage sleeve is rotated, a linkage strip rotates to link a third gear to rotate, the third gear links a second gear, the second gear links a first gear, and at the moment, a rotating shaft enables a threaded sleeve to do telescopic motion under the action of spiral lines, so that the sealing effect is achieved. Under the action of the connecting rod, the limiting block can extend out, and at the moment, the limiting block can limit the outer surfaces of the two flange parts of the butt joint disc, so that the two flange parts of the butt joint disc are uniformly and quickly positioned, the uniform limiting effect of each position is ensured, and meanwhile, the overall quick assembly can also be ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ball valve, concretely is a kind of flange connection hard sealing ball valve structure. BACKGROUND

[0002] Ball valve, opening and closing part (ball) is driven by valve stem, and rotates around the axis of ball valve;It can also be used for flow regulation and control, wherein hard sealing V-type ball valve has strong shear force between V-type ball core and hardfacing hard metal valve seat, and is particularly suitable for medium containing fiber, micro solid particles and the like;And multi-pass ball valve can not only flexibly control the flow of medium, flow distribution and flow direction switching on pipeline, but also can close any channel to connect the other two channels;

[0003] However, the external pipeline of ball valve is connected by flange, but the surface of flange is arrayed with holes to facilitate the installation of two flanges, and the conventional installation method is that one bolt is embedded and locked by nut, because there are multiple holes on a single flange, which leads to low efficiency when nut is tightened, and the force of each position is different, which affects the sealing effect of each surface;

[0004] Therefore, a flange connection hard sealing ball valve structure is provided. SUMMARY

[0005] This section aims to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the present utility model.

[0006] However, the external pipeline of ball valve is connected by flange, but the surface of flange is arrayed with holes to facilitate the installation of two flanges, and the conventional installation method is that one bolt is embedded and locked by nut, because there are multiple holes on a single flange, which leads to low efficiency when nut is tightened, and the force of each position is different, which affects the sealing effect of each surface.

[0007] To solve the above technical problems, the utility model provides the following technical scheme: a kind of flange connection hard sealing ball valve structure, including valve body, limiting cylinder and butt joint disc two;

[0008] Two ends of the valve body are connected with butt joint disc one, the limiting cylinder is connected outside the butt joint disc one, the butt joint disc two is connected at one end of the butt joint disc one away from the valve body, the inner edge of the limiting cylinder is provided with a limiting module, the limiting module penetrates the flange part of the butt joint disc one and the butt joint disc two, the circumferential surface of the limiting cylinder is milled with a guide hole, the inner edge of the limiting cylinder is hinged with gear three, the limiting cylinder is movably connected with linkage sleeve outside, the inner edge of the linkage sleeve is provided with linkage strip, the linkage strip is movably connected in the guide hole, the inner edge of the linkage strip is milled with a tooth, and the linkage strip is engaged with gear three.

[0009] As a preferred technical scheme of the flange connection hard sealing ball valve structure, the limiting module comprises a limiting column, a rotating shaft, gear two and a limiting block, the limiting column is arranged on the inner edge of the limiting cylinder, the limiting column penetrates the flange part of the butt joint disc one and the butt joint disc two, the rotating shaft is hinged in the limiting column, the rotating shaft is provided with gear one outside, the limiting column is hinged with gear two at a position close to the gear one, the gear two is engaged with the gear one, and the gear two is engaged with gear three.

[0010] As a preferred technical scheme of the flange connection hard sealing ball valve structure, the surface of the rotating shaft away from the gear one is provided with a spiral pattern, and the spiral pattern is screwed with a threaded sleeve.

[0011] As a preferred technical scheme of the flange connection hard sealing ball valve structure, the limiting block is movably arranged on the limiting column, and a connecting rod is hinged between the limiting block and the threaded sleeve.

[0012] As a preferred technical scheme of the flange connection hard sealing ball valve structure, the inner edge of one end of the butt joint disc two facing the butt joint disc one is provided with a rubber inner cylinder, and the rubber inner cylinder is in embedded connection with the inner edge of the butt joint disc one.

[0013] The flange connection hard sealing ball valve structure has the following beneficial effects: when the butt joint disc two is connected with the butt joint disc one, the rubber inner cylinder is connected into the butt joint disc one to achieve sealing effect, when the linkage sleeve is rotated under the condition that the butt joint disc two and the valve body are completely connected, the linkage gear three is rotated when the linkage strip is rotated, the gear three drives the gear two, the gear two drives the gear one, at this time, the rotating shaft is driven to make the threaded sleeve move under the action of the spiral pattern, the limiting block is driven to move out under the action of the connecting rod, at this time, the limiting block can limit the outer surface of the flange part of the butt joint disc two, so that the flange part of the butt joint disc two is uniformly and quickly positioned, the uniform limiting effect of each position is ensured, and the whole is quickly assembled.

[0014] The other features and advantages of the present application will be described in the following description, and become apparent from the description, or can be learned from the practice of the present application. The objects and other advantages of the present application can be achieved and obtained by means of the structure particularly pointed out in the description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor. Among them:

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0017] Figure 2 It is a schematic diagram of the present application.

[0018] Figure 3 It is a schematic diagram of the present application.

[0019] Figure 4 It is a schematic diagram of the present application.

[0020] Figure 5 It is a schematic diagram of the present application.

[0021] Reference signs:

[0022] 100, valve body; 101, butt joint disc one; 200, limiting cylinder; 201, limiting module; 2011, limiting column; 2012, rotating shaft; 2013, gear one; 2014, gear two; 2015, spiral pattern; 2016, threaded sleeve; 2017, limiting block; 2018, connecting rod; 202, guide hole; 203, gear three; 300, butt joint disc two; 301, rubber inner cylinder; 400, linkage sleeve; 401, linkage strip. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail in conjunction with the drawings of the specification.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from the description, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0025] Secondly, the "one embodiment" or "embodiment" referred to herein is intended to encompass a particular feature, structure, or characteristic that is included in at least one implementation of the present application. The appearances of "in one embodiment" or "in an embodiment" at different places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive.

[0026] Thirdly, the present application is described in detail in conjunction with the schematic diagram. In the detailed description of the embodiments of the present application, the sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in the actual manufacture.

[0027] Embodiment, refer to Figure 1 and 2 A flange connection hard sealing ball valve structure, valve body 100, limiting cylinder 200 and butt joint disc two 300; the two ends of the valve body 100 are butt jointed with butt joint disc one 101, the limiting cylinder 200 is butt jointed outside butt joint disc one 101, butt joint disc two 300 is butt jointed at the end of butt joint disc one 101 away from the valve body 100, the inner edge of the limiting cylinder 200 is provided with limiting module 201, limiting module 201 penetrates the flange part of butt joint disc one 101 and butt joint disc two 300, the peripheral surface of the limiting cylinder 200 is milled with guide hole 202, the inner edge of the limiting cylinder 200 is hinged with gear three 203, limiting module 201 is arranged in the limiting cylinder 200, so that the flange part of butt joint disc one 101 and butt joint disc two 300 is not easy to occur position deviation when butt jointing;

[0028] Refer to Figure 2 , 3 and 4, the limiting cylinder 200 is movably butt jointed with linkage sleeve 400, the inner edge of linkage sleeve 400 is provided with linkage strip 401, linkage strip 401 is movably butt jointed in guide hole 202, the inner edge of linkage strip 401 is milled with tooth pattern, linkage strip 401 is engaged with gear three 203, linkage sleeve 400 can make multiple gear two 2014 synchronous rotation under the action of linkage strip 401 and gear three 203 when rotating operation;

[0029] Refer to Figure 3The limiting module 201 includes a limiting post 2011, a rotating shaft 2012, a second gear 2014, and a limiting block 2017. The limiting post 2011 is located on the inner edge of the limiting cylinder 200 and passes through the flange portions of the first docking plate 101 and the second docking plate 300. The rotating shaft 2012 is hinged in the limiting post 2011. A first gear 2013 is disposed outside the rotating shaft 2012. A second gear 2014 is hinged to the limiting post 2011 near the first gear 2013. The second gear 2014 meshes with the first gear 2013 and with the third gear 203. The portion of the rotating shaft 2012 away from the first gear 2013 is shown in the diagram. The surface is provided with a spiral pattern 2015, and a threaded sleeve 2016 is threaded onto the spiral pattern 2015. The limiting block 2017 moves telescopically on the limiting post 2011. A connecting rod 2018 is hinged between the limiting block 2017 and the threaded sleeve 2016. After the gear 2014 is controlled to rotate by the gear 3 203, it will drive the rotating shaft 2012 to rotate through the gear 1 2013. The spiral pattern 2015 causes the threaded sleeve 2016 to move under the action of the thread. Under the action of the connecting rod 2018, the limiting block 2017 will move telescopically. After the limiting block 2017 is extended, it can act on the surface of the second docking plate 300.

[0030] Reference Figure 5 A rubber inner cylinder 301 is provided on the inner edge of the end of the second docking plate 300 facing the first docking plate 101. The rubber inner cylinder 301 is fitted to the inner edge of the first docking plate 101. When the second docking plate 300 and the first docking plate 101 are docked, the rubber inner cylinder 301 will be embedded in the first docking plate 101, which will have a sealing effect at the docking point of the second docking plate 300 and the first docking plate 101.

[0031] The above steps achieve the following: Align the hole of the flange of the second docking plate 300 with the position of the limiting module 201, and insert the second docking plate 300 into the limiting cylinder 200. At this time, the rubber inner cylinder 301 enters the first docking plate 101, providing a sealing effect at the joint. When the flange of the second docking plate 300 and the flange of the first docking plate 101 are in complete contact, the linkage sleeve 400 is rotated. When the linkage bar 401 rotates, the linkage gear 3 203 rotates. The gear 3 203 links the gear 2 2014, and the gear 2 2014 links the gear 1 2013. At this time, under the action of the spiral pattern 2015, the rotating shaft 2012 causes the threaded sleeve 2016 to extend and retract. Under the action of the connecting rod 2018, the limiting block 2017 can extend. At this time, the limiting block 2017 can limit the outer surface of the flange of the second docking plate 300.

[0032] It is to be understood that the detailed description and specific examples described above are intended for purposes of illustration only and are not intended to limit the scope of the technology as claimed. Those of ordinary skill in the art, and the operators of those systems, will recognize that many modifications can be made to the technology described above while achieving the same results without departing from the spirit and scope of the claimed technology. Accordingly, the legal scope of claims described above will not be limited to the particular examples disclosed but will include any alternatives or modifications that are within the spirit and scope of the claimed technology.

[0033] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application. It should be included in the scope of the claims of the present application.

Claims

1. A ball valve structure with a flange connection and hard seal, characterized in that: Includes valve body (100), limit cylinder (200) and docking plate two (300); The valve body (100) has two docking discs (101) connected to both ends. The limiting cylinder (200) is connected to the outside of the docking disc (101). The second docking disc (300) is connected to the end of the docking disc (101) away from the valve body (100). A limiting module (201) is provided on the inner edge of the limiting cylinder (200). The limiting module (201) passes through the flange of the first docking disc (101) and the second docking disc (300). A guide hole (202) is milled on the circumferential surface of the limiting cylinder (200). A gear three (203) is hinged to the inner edge of the limiting cylinder (200). A linkage sleeve (400) is movably connected to the outer edge of the limiting cylinder (200). A linkage bar (401) is provided on the inner edge of the linkage sleeve (400). The linkage bar (401) is movably connected in the guide hole (202). The inner edge of the linkage bar (401) is milled with teeth. The linkage bar (401) meshes with the gear three (203).

2. The ball valve structure with flange connection hard seal according to claim 1, characterized in that: The limiting module (201) includes a limiting post (2011), a rotating shaft (2012), a second gear (2014), and a limiting block (2017). The limiting post (2011) is located on the inner edge of the limiting cylinder (200). The limiting post (2011) passes through the flange of the first docking plate (101) and the second docking plate (300). The rotating shaft (2012) is hinged in the limiting post (2011). A first gear (2013) is provided outside the rotating shaft (2012). A second gear (2014) is hinged to the limiting post (2011) near the first gear (2013). The second gear (2014) meshes with the first gear (2013) and the second gear (2014) meshes with the third gear (203).

3. The ball valve structure with flange connection hard seal according to claim 2, characterized in that: The rotating shaft (2012) has a spiral pattern (2015) on its surface away from the gear (2013), and the spiral pattern (2015) is externally threaded with a threaded sleeve (2016).

4. The ball valve structure with flange connection hard seal according to claim 2, characterized in that: The limiting block (2017) extends and retracts on the limiting post (2011), and a connecting rod (2018) is hinged between the limiting block (2017) and the threaded sleeve (2016).

5. The ball valve structure with a flange connection and hard seal according to claim 1, characterized in that: A rubber inner cylinder (301) is provided on the inner edge of the end of the second docking plate (300) facing the first docking plate (101), and the rubber inner cylinder (301) is fitted and connected to the inner edge of the first docking plate (101).

Images