CN212804467U - Connecting structure of corrosion-resistant ball valve convenient to disassemble - Google Patents
Connecting structure of corrosion-resistant ball valve convenient to disassemble Download PDFInfo
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- CN212804467U CN212804467U CN202021626206.2U CN202021626206U CN212804467U CN 212804467 U CN212804467 U CN 212804467U CN 202021626206 U CN202021626206 U CN 202021626206U CN 212804467 U CN212804467 U CN 212804467U
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- valve
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- conical surface
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Abstract
The utility model belongs to the field of machinery, a just, dismantle connection structure of corrosion-resistant ball valve is related to, including the valve body, this valve body includes first valve body and second valve body, and this first valve body and second valve body axial meet and form the cavity, are equipped with the case in this cavity, and this case is connected with the valve rod, still including fixed cover, the outside of second valve body has spacing portion, fixed cover is established in the second valve body outside, and this fixed cover passes through threaded connection with first valve body to fixed cover compresses tightly second valve body and first valve body through spacing portion. The mode that the screw-thread fit of adopting fixed cover and first valve body compresses tightly the second valve body carries out the fixed connection of ball valve, simple structure, convenient to detach.
Description
Technical Field
The utility model belongs to the field of machinery, a valve structure is related to, especially, relate to a connection structure of just dismantling corrosion-resistant ball valve.
Background
Ball valve is a valve in which a valve rod drives an opening and closing member to rotate around the axis of the ball valve. Ball valves are widely used in various industries, mainly for cutting, distributing and changing the flow direction of media. In the existing ball valve, the valve body is fixed and sealed through a plurality of bolts arranged in the circumferential direction, and the valve body is inconvenient to disassemble and assemble.
For example, the chinese utility model patent discloses a coal industry ball valve [ publication No.: CN205401797U ], the valve body comprises a first valve body and a second valve body located at two ends of the first valve body, and the first valve body and the second valve body are connected through bolts and nuts.
Among the above-mentioned technical scheme, through first valve body and the fixed second valve body of bolt and nut complex mode, it is comparatively hard to waste time to dismantle the process, influences work efficiency.
Disclosure of Invention
The application aims to solve the problems and provide a connecting structure of the corrosion-resistant ball valve convenient to disassemble;
in order to achieve the above purpose, the utility model adopts the following technical proposal:
the application creatively provides a just, dismantle connection structure of corrosion-resistant ball valve, including the valve body, this valve body includes first valve body and second valve body, and this first valve body and second valve body axial meet and form the cavity, are equipped with the case in this cavity, and this case is connected with the valve rod, still including fixed cover, the outside of second valve body has spacing portion, fixed cover is established in the second valve body outside, and this fixed cover passes through threaded connection with first valve body to fixed cover compresses tightly second valve body and first valve body through spacing portion.
The end part of the first valve body is provided with an inner sleeve part, the inner side of the inner sleeve part is provided with a first internal thread, and the end part of the second valve body is provided with a first external thread matched with the first internal thread;
the minimum inner diameter of the inner sleeve part is larger than the diameter of the valve core.
The end part of the first valve body is provided with an outer sleeve part positioned on the outer side of the inner sleeve part, the inner side of the outer sleeve part is provided with a second internal thread, and the end part of the fixed sleeve is provided with a second external thread matched with the second internal thread;
the thread direction of the second external thread is the same as that of the first internal thread.
The limiting part of the second valve body is a first outer conical surface of which the diameter gradually decreases from one end close to the first valve body to the end away from the first valve body;
and a first inner conical surface matched with the outer conical surface of the second valve body is arranged on the inner side of the fixed sleeve.
The inner side of the end part of the inner sleeve part is provided with a second inner conical surface with the diameter gradually increasing from inside to outside, and the first internal thread is arranged on the second inner conical surface;
and a second outer conical surface matched with the second inner conical surface is arranged on the outer side of the end part of the second valve body, and the first external thread is arranged on the second outer conical surface.
An annular sealing platform is arranged on the outer side of the second outer conical surface of the second valve body, an annular sealing end matched with the annular sealing platform is arranged on the inner sleeve portion, and a sealing ring is arranged between the annular sealing end and the annular sealing platform.
The valve is characterized in that a first wear-resistant ring mounting groove is formed in the inner side of the first valve body, a second wear-resistant ring mounting groove is formed in the inner side of the end portion of the second valve body, the first wear-resistant ring mounting groove and the second wear-resistant ring mounting groove are symmetrically arranged at two ends of the valve core, a wear-resistant ring is respectively arranged in the first wear-resistant ring mounting groove and the second wear-resistant ring mounting groove, and the valve core is in contact with the wear-resistant rings on two sides.
The inner side surfaces of the first wear-resistant ring mounting groove and the second wear-resistant ring mounting groove are third inner conical surfaces, the diameters of the third inner conical surfaces gradually increase towards one end close to the valve core, the outer side of the wear-resistant ring is a third outer conical surface matched with the third inner conical surface, and the inner side of the wear-resistant ring is an arc-shaped surface matched with the valve core.
The valve comprises a valve body, a cavity, a valve rod and a valve rod, wherein the cavity is axially arranged in the valve body, a bypass hole vertically connected to one side of the cavity is formed in the valve body, and the valve rod is arranged in the bypass hole and connected with the valve body through a bearing.
The wear-resistant ring is made of polytetrafluoroethylene or rubber materials.
Compared with the prior art, the utility model has the advantages of:
the mode that the screw-thread fit of adopting fixed cover and first valve body compresses tightly the second valve body carries out the fixed connection of ball valve, simple structure, convenient to detach.
Further, the firm connecting structure is achieved through the mode that the inner layer and the outer layer are in threaded connection and the limiting portion is tightly pressed. The second valve body is in threaded connection with the first valve body through the conical surface, and tightness and pressure resistance of the thread pair are enhanced.
The matching of the first outer conical surface and the first inner conical surface enables the connecting structure to have good matching degree, and is more beneficial to assembly and disassembly.
Drawings
Fig. 1 is a schematic structural diagram provided in the present application.
Fig. 2 is a schematic view of a split structure provided in the present application.
In the figure, the valve body 1, the cavity 10, the first valve body 11, the first internal thread 110, the second internal thread 111, the annular sealing end 112, the first wear-resistant ring installation groove 113, the second valve body 12, the limiting portion 120, the first external thread 121, the annular sealing platform 122, the second wear-resistant ring installation groove 123, the second external conical surface 124, the third internal conical surface 125, the bypass hole 13, the inner sleeve portion 14, the second internal conical surface 140, the outer sleeve portion 15, the valve core 2, the valve rod 3, the fixed sleeve 4, the second external thread 41, the first internal conical surface 42, the sealing ring 5, the wear-resistant ring 6, the third external conical surface 61 and the bearing 7 are shown.
Detailed Description
Further illustrated by the following specific examples;
as shown in fig. 1 and 2, a connecting structure of a corrosion-resistant ball valve convenient to disassemble includes a valve body 1, the valve body 1 includes a first valve body 11 and a second valve body 12, the first valve body 11 and the second valve body 12 are axially connected to form a cavity 10, a valve core 2 is arranged in the cavity 10, the valve core 2 is connected with a valve rod 3, the connecting structure further includes a fixing sleeve 4, the outer side of the second valve body 12 is provided with a limiting portion 120, the fixing sleeve 4 is sleeved on the outer side of the second valve body 12, the fixing sleeve 4 is in threaded connection with the first valve body 11, and the fixing sleeve 4 compresses the second valve body 12 and the first valve body 11 through the limiting portion 120. The fixed connection of ball valve is carried out to the mode that the screw-thread fit of adopting fixed cover 4 and first valve body 11 compresses tightly second valve body 12, simple structure, convenient to detach.
The first valve body 11 is a main valve body, and the second valve body 12 is connected to one end of the first valve body 11 to seal the valve core 2 in the cavity 10. The valve core 2 is provided with a through hole, and the valve core 2 is driven by the valve rod 3 to rotate along the direction vertical to the axis of the through hole, so that the through hole and the cavity 10 form a passage or a closed circuit.
The end of the first valve body 11 connected to the second valve body 12 has an inner sleeve portion 14, and the minimum inner diameter of the inner sleeve portion 14 is larger than the diameter of the valve core 2, so that the valve core 2 can be placed into the cavity 10 from the inner sleeve portion 14. The end of the inner sleeve portion 14 has an annular closed end 112 for engagement with the second valve body 2 for end face closure. An outer sleeve part 15 is arranged on the outer side of the inner sleeve part 14, the inner diameter of the end part of the outer sleeve part 15 is larger than the outer diameter of the inner sleeve part 14, and an annular groove is formed between the annular closed end 112 and the outer sleeve part 15 and used for clamping the end part of the fixing sleeve 4.
A first internal thread 110 is provided inside the inner sleeve portion 14, and a first external thread 121 that engages with the first internal thread 110 is provided at an end of the second valve body 12. The second valve body 12 is screwed with the first internal thread 110 of the first valve body 11 by the first external thread 121. The inner side of the outer sleeve part 15 is provided with a second internal thread 111, and the end of the fixing sleeve 4 is provided with a second external thread 41 matched with the second internal thread 111. The fixing sleeve 4 is in threaded connection with the second internal thread 111 of the first valve body 11 through the second external thread 41, so that the fixing effect is achieved.
The thread direction of the second external thread 41 is the same as the thread direction of the first internal thread 110. The screwing direction of the fixed sleeve 4 and the first valve body 11 is kept consistent with the screwing direction of the second valve body 12 and the first valve body 11. The tightening force of the second valve body 12 is further enhanced during the tightening of the fixing sleeve 4.
The limiting portion 120 of the second valve body 12 is a first external conical surface whose diameter gradually decreases from the end close to the first valve body 11 to the end away from the first valve body 11. The inner side of the fixed sleeve 4 is provided with a first inner conical surface 42 cooperating with the outer conical surface of the second valve body 12. When the second external thread 41 of the fixing sleeve 4 is screwed with the second internal thread 111 of the first valve body 11, the first internal conical surface 42 presses the second valve body 12 through the stopper 120. The matching of the first external conical surface and the first internal conical surface 42 enables the connecting structure to have good matching degree, and is convenient to disassemble and assemble.
The inner side of the end portion of the inner sleeve portion 14 has a second inner tapered surface 140 having a diameter gradually increasing from the inside to the outside, and the first internal thread 110 is provided on the second inner tapered surface 140. The second valve body 12 has a second external conical surface 124 formed on the outer side of the end thereof to be engaged with the second internal conical surface 140, and the first external thread 121 is formed on the second external conical surface 124. The second valve body 12 and the first valve body 11 are in threaded connection through conical surfaces, and the tightness and pressure resistance of the thread pair are enhanced.
An annular sealing platform 122 is arranged at the outer end of a second outer conical surface 124 of the second valve body 12, the annular sealing platform 122 is connected with the annular sealing end 112 for sealing, a sealing ring 5 is arranged between the annular sealing end 112 and the annular sealing platform 122, and the sealing ring 5 is made of rubber. The annular sealing platform 122 and the annular sealing end 112 compress the sealing ring 5 under the torsion action of the threads, so that a good sealing effect is achieved.
The inner side of the first valve body 11 is provided with a first wear-resistant ring mounting groove 113, the inner side of the end part of the second valve body 12 is provided with a second wear-resistant ring mounting groove 123, the first wear-resistant ring mounting groove 113 and the second wear-resistant ring mounting groove 123 are symmetrically arranged at two ends of the valve core 2, a wear-resistant ring 6 is respectively arranged in the first wear-resistant ring mounting groove 113 and the second wear-resistant ring mounting groove 123, the valve core 2 is fixed in the cavity 10 through the wear-resistant rings 6 at two sides, and friction force is generated between the valve core 2 and the wear-resistant rings 6 in the rotation process. The wear-resisting ring 6 is made of polytetrafluoroethylene or rubber materials, and can prevent the valve core 2 from rotating to wear the valve body 1.
In order to improve the matching degree of the wear-resistant ring 6 and the valve body 1, the inner side surfaces of the first wear-resistant ring installation groove 113 and the second wear-resistant ring installation groove 123 are third inner conical surfaces 125 with diameters gradually increasing towards one end close to the valve core 2, the outer side of the wear-resistant ring 6 is a third outer conical surface 61 matched with the third inner conical surfaces 125, and the inner side of the wear-resistant ring 6 is an arc-shaped surface matched with the valve core 2.
The cavity 10 is axially arranged in the valve body 1, a bypass hole 13 vertically connected to one side of the cavity 10 is arranged in the valve body 1, and the valve rod 3 is arranged in the bypass hole 13 and connected with the valve body 1 through a bearing 7. The outer end of the valve rod 3 is connected with a handle or a driving motor to control the valve rod 3.
The working principle of the utility model is as follows:
in the installation process, wear-resisting circle 6 of first valve body 11 side sets up in first wear-resisting circle mounting groove 113 earlier, wear-resisting circle 6 of second valve body 11 side sets up in second wear-resisting circle mounting groove 123, put into the cavity 10 of first valve body 11 side with case 2 again, valve rod 3 inserts from by-pass hole 13 and is connected with case 2, tighten second valve body 12 through first external screw thread 121 and first internal thread 110 of first valve body 11, embolia fixed cover 4 from the second valve body 11 outside, and tighten through second external screw thread 41 and second internal thread 111, simultaneously, compress tightly second valve body 12 through spacing portion 120, reach firm connection structure.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides a just, dismantle connection structure of corrosion-resistant ball valve, includes valve body (1), and this valve body (1) includes first valve body (11) and second valve body (12), and this first valve body (11) and second valve body (12) axial meet and form cavity (10), are equipped with case (2) in this cavity (10), and this case (2) are connected its characterized in that with valve rod (3): still include fixed cover (4), the outside of second valve body (12) has spacing portion (120), fixed cover (4) are established in the second valve body (12) outside, and this fixed cover (4) pass through threaded connection with first valve body (11) to fixed cover (4) compress tightly second valve body (12) and first valve body (11) through spacing portion (120).
2. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 1, wherein: an inner sleeve part (14) is arranged at the end part of the first valve body (11), a first internal thread (110) is arranged on the inner side of the inner sleeve part (14), and a first external thread (121) matched with the first internal thread (110) is arranged at the end part of the second valve body (12);
the minimum inner diameter of the inner sleeve part (14) is larger than the diameter of the valve core (2).
3. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 2, wherein: an outer sleeve part (15) positioned on the outer side of the inner sleeve part (14) is arranged at the end part of the first valve body (11), a second internal thread (111) is arranged on the inner side of the outer sleeve part (15), and a second external thread (41) matched with the second internal thread (111) is arranged at the end part of the fixed sleeve (4);
the thread direction of the second external thread (41) is the same as that of the first internal thread (110).
4. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 1, wherein: the limiting part (120) of the second valve body (12) is a first external conical surface of which the diameter gradually decreases from one end close to the first valve body (11) to the end away from the first valve body (11); the inner side of the fixed sleeve (4) is provided with a first inner conical surface (42) matched with the outer conical surface of the second valve body (12).
5. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 2, wherein: the inner side of the end part of the inner sleeve part (14) is provided with a second inner conical surface (140) with the diameter gradually increasing from inside to outside, and the first internal thread (110) is arranged on the second inner conical surface (140);
and a second external conical surface (124) matched with the second internal conical surface (140) is arranged on the outer side of the end part of the second valve body (12), and the first external thread (121) is arranged on the second external conical surface (124).
6. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 5, wherein: an annular sealing table (122) is arranged on the outer side of a second outer conical surface (124) of the second valve body (12), an annular sealing end (112) matched with the annular sealing table (122) is arranged at the end part of the inner sleeve part (14), and a sealing ring (5) is arranged between the annular sealing end (112) and the annular sealing table (122).
7. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 1, wherein: the inboard of first valve body (11) is equipped with first wear-resisting circle mounting groove (113), the tip inboard of second valve body (12) is equipped with second wear-resisting circle mounting groove (123), first wear-resisting circle mounting groove (113) and second wear-resisting circle mounting groove (123) symmetry set up the both ends in case (2), and be equipped with wear-resisting circle (6) in this first wear-resisting circle mounting groove (113) and the wear-resisting circle mounting groove of second (123) respectively, case (2) contact with wear-resisting circle (6) of both sides.
8. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 7, wherein: the inner side surfaces of the first wear-resistant ring mounting groove (113) and the second wear-resistant ring mounting groove (123) are third inner conical surfaces (125) with diameters gradually increasing towards one end close to the valve core (2), the outer side of the wear-resistant ring (6) is a third outer conical surface (61) matched with the third inner conical surface (125), and the inner side of the wear-resistant ring (6) is an arc-shaped surface matched with the valve core (2).
9. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 1, wherein: the valve is characterized in that the cavity (10) is axially arranged in the valve body (1), a bypass hole (13) which is vertically connected to one side of the cavity (10) is formed in the valve body (1), and the valve rod (3) is arranged in the bypass hole (13) and is connected with the valve body (1) through a bearing (7).
10. The coupling structure of a corrosion-resistant ball valve easy to disassemble as claimed in claim 8, wherein: the wear-resistant ring (6) is made of polytetrafluoroethylene or rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021626206.2U CN212804467U (en) | 2020-08-07 | 2020-08-07 | Connecting structure of corrosion-resistant ball valve convenient to disassemble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021626206.2U CN212804467U (en) | 2020-08-07 | 2020-08-07 | Connecting structure of corrosion-resistant ball valve convenient to disassemble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804467U true CN212804467U (en) | 2021-03-26 |
Family
ID=75083076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021626206.2U Expired - Fee Related CN212804467U (en) | 2020-08-07 | 2020-08-07 | Connecting structure of corrosion-resistant ball valve convenient to disassemble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212804467U (en) |
-
2020
- 2020-08-07 CN CN202021626206.2U patent/CN212804467U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210326 Termination date: 20210807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |