Fixed hard sealing ball valve

Abstract

The utility model discloses a fixed type hard sealing ball valve, and relates to the field of ball valves. The fixed hard sealing ball valve comprises a valve body unit, a liquid outlet end and a liquid inlet end are arranged at the two ends of the valve body unit respectively, the liquid inlet end comprises a fixed sleeve, a connecting sleeve, an installing sleeve and a filter screen, the fixed sleeve is fixedly installed at the end of the valve body unit, and the outer side of the end of the connecting sleeve is in threaded connection with the inner wall of the fixed sleeve; the mounting sleeve is fixedly mounted at one end, away from the fixed sleeve, of the connecting sleeve, and the filter screen is mounted at the end, inside the fixed sleeve, of the connecting sleeve. According to the fixed hard sealing ball valve, the fixed sleeve is fixed to the end of the valve body, basic support is provided, and stable connection between the liquid inlet end and the valve body unit is ensured. The connecting sleeve is connected with the fixing sleeve through threads, and a filter screen is nested inside the end portion. The detachable design facilitates replacement of the filter screen, and the valve body unit does not need to be disassembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field, concretely is a fixed hard sealing ball valve. BACKGROUND

[0002] The conventional hard sealing ball valve has the following technical defects in industrial application:

[0003] In the material conveying pipeline of mining, metallurgy and other industries, the medium often contains a large amount of solid particle impurities. If the hard sealing ball valve lacks a filter device, impurities can easily enter the valve body, causing valve core wear, sealing failure or pipeline blockage. Although some ball valves are equipped with filter screens, the filter screens need to be removed and replaced, which is complex and affects production efficiency. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a fixed hard sealing ball valve, which solves the problem that if the hard sealing ball valve lacks a filter device, impurities can easily enter the valve body, causing valve core wear, sealing failure or pipeline blockage. Although some ball valves are equipped with filter screens, the filter screens need to be removed and replaced, which is complex and affects production efficiency.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a fixed hard sealing ball valve, comprising a valve body unit, the two ends of the valve body unit are respectively provided with a liquid outlet end and a liquid inlet end, the liquid inlet end comprises:

[0006] A fixed sleeve is fixedly installed at the end of the valve body unit;

[0007] A connecting sleeve is threadedly connected to the inner wall of the fixed sleeve on the outer side of the end thereof;

[0008] An installation sleeve is fixedly installed at the end of the connecting sleeve away from the fixed sleeve, and the installation sleeve is used for installing a liquid inlet pipe;

[0009] A filter screen is installed at the end of the connecting sleeve inside the fixed sleeve, and is used for filtering impurities in the liquid inlet medium.

[0010] Preferably, the valve body unit comprises:

[0011] A valve body;

[0012] A valve core is rotatably connected inside the valve body;

[0013] A valve stem is rotatably arranged on the valve body, the bottom end of the valve stem is connected with the valve core, and the top end of the valve stem extends outward and is fixedly installed with a handle.

[0014] Preferably, the valve body is fixedly installed with a valve seat inside, and the outer side of the valve core is tightly attached to the valve seat.

[0015] Preferably, an end of the connecting sleeve is provided with a mounting groove, and the filter screen is fixedly connected in the mounting groove by bolts.

[0016] Preferably, a rotation-stopping assembly is arranged between the connecting sleeve and the fixing sleeve.

[0017] Preferably, the rotation-stopping assembly comprises:

[0018] a first fixing block fixedly installed on the outer side of the fixing sleeve;

[0019] a second fixing block fixedly installed on the outer side of the connecting sleeve, and the second fixing block is in abutment with the first fixing block.

[0020] Preferably, a through pin hole is arranged between the first fixing block and the second fixing block, and a pin shaft is arranged in the pin hole.

[0021] The utility model discloses a fixed hard sealing ball valve, which has the following beneficial effects: the fixed hard sealing ball valve is fixed to the end of the valve body, providing basic support and ensuring the stable connection of the liquid inlet end and the valve body unit. The connecting sleeve is connected with the fixing sleeve through threads, and the end inner side is nested with the filter screen. The detachable design facilitates the replacement of the filter screen, and the valve body unit does not need to be disassembled. The mounting sleeve is fixed to the outer end of the connecting sleeve, directly connected with the liquid inlet pipe, and the filter screen filters the impurities in the medium. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0023] Figure 1 It is the overall structure schematic diagram of the utility model;

[0024] Figure 2 It is the structure sectional view of the utility model;

[0025] Figure 3 It is the structure schematic diagram of the liquid inlet end of the utility model;

[0026] Figure 4 It is the structure schematic diagram of the rotation-stopping assembly of the utility model.

[0027] As shown in the figure, 1, valve body unit; 11, valve body main body; 12, valve core; 13, valve rod; 14, valve seat; 15, handle; 2, liquid outlet; 3, liquid inlet; 31, fixed sleeve; 32, connecting sleeve; 321, mounting groove; 33, mounting sleeve; 34, filter screen; 35, rotation stopping assembly; 351, first fixed block; 352, second fixed block; 353, pin shaft. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0029] The embodiments of the present application provide a fixed hard sealing ball valve, which solves the problem that impurities easily enter the inside of the valve body, causing the valve core to be abraded, the sealing to be ineffective or the pipeline to be blocked if the hard sealing ball valve lacks a filter device. Although some ball valves are equipped with filter screens, the filter screens need to be disassembled from the entire valve body for replacement, which is complicated to operate and affects the production efficiency.

[0030] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and specific embodiments.

[0031] The embodiments of the present application disclose a fixed hard sealing ball valve.

[0032] According to the drawings Figures 1-4 As shown in the figure, including valve body unit 1, the two ends of valve body unit 1 are respectively provided with liquid outlet 2 and liquid inlet 3, and liquid inlet 3 comprises:

[0033] The fixed sleeve 31 is fixedly installed at the end of the valve body unit 1.

[0034] The connecting sleeve 32 is threadedly connected with the inner wall of the fixed sleeve 31 at the outer side of the end thereof.

[0035] The mounting sleeve 33 is fixedly installed at the end of the connecting sleeve 32 away from the fixed sleeve 31, and the mounting sleeve 33 is used for mounting the liquid inlet pipe.

[0036] The filter screen 34 is installed at the end of the connecting sleeve 32 inside the fixed sleeve 31, and is used for filtering the impurities of the liquid inlet medium.

[0037] The fixed sleeve 31 is fixed to the end of the valve body, providing basic support and ensuring stable connection of the liquid inlet end 3 with the valve body unit 1. The connecting sleeve 32 is connected with the fixed sleeve 31 by screwing, and the end inside is nested with the filter screen 34. The detachable design facilitates the replacement of the filter screen 34 without disassembling the valve body unit 1. The mounting sleeve 33 is fixed to the outer end of the connecting sleeve 32 and directly connected with the liquid inlet pipe. The filter screen 34 filters impurities in the medium.

[0038] In particular, the valve body unit 1 comprises:

[0039] The valve body 11;

[0040] The valve core 12 is rotatably connected inside the valve body 11;

[0041] The valve rod 13 is rotatably arranged on the valve body 11, the bottom end of the valve rod 13 is connected with the valve core 12, and the top end of the valve rod 13 extends outward and is fixedly installed with the handle 15.

[0042] In particular, the valve body 11 is fixedly installed with the valve seat 14 inside, and the outer side of the valve core 12 is tightly attached to the valve seat 14.

[0043] The valve body 11 is built-in with the valve core 12 and the valve seat 14, the outer side of the valve core 12 is tightly attached to the valve seat 14, forming a hard seal, resistant to high pressure and wear. The valve rod 13 connects the valve core 12 and the handle 15, and controls the opening and closing of the valve core 12 by rotating the handle 15, realizing the on-off of the medium.

[0044] Further, the end of the connecting sleeve 32 is provided with a mounting groove 321, and the filter screen 34 is fixedly connected in the mounting groove 321 by bolts.

[0045] Further, the connecting sleeve 32 and the fixed sleeve 31 are provided with a rotation stopping assembly 35.

[0046] In particular, the rotation stopping assembly 35 comprises:

[0047] The first fixed block 351 is fixedly installed on the outer side of the fixed sleeve 31;

[0048] The second fixed block 352 is fixedly installed on the outer side of the connecting sleeve 32, and the second fixed block 352 is attached to the first fixed block 351.

[0049] Further, a through pin hole is provided between the first fixed block 351 and the second fixed block 352, and a pin shaft 353 is arranged in the pin hole.

[0050] The first fixed block 351 is welded outside the fixed sleeve 31 to provide a locking fulcrum. The second fixed block 352 is welded outside the connecting sleeve 32 and is in contact with the first fixed block 351, locked by the pin shaft 353 to prevent the connecting sleeve 32 from loosening due to vibration or pressure. The pin shaft 353 penetrates the pin holes of the first fixed block 351 and the second fixed block 352 to form a mechanical lock, ensuring the threaded fastening of the connecting sleeve 32 and the fixed sleeve 31.

[0051] The medium enters from the liquid inlet end 3, first passes through the filter screen 34 to filter impurities and protect the valve core 12 and the valve seat 14 from wear. The filtered medium enters the valve body 11 and is controlled by the valve core 12 to turn on or off. The valve core 12 is in close contact with the valve seat 14 to achieve zero leakage sealing.

[0052] The rotation stopping assembly 35 locks the connecting sleeve 32 and the fixed sleeve 31 through the pin shaft 353 to prevent loosening due to vibration or pressure and ensure the long-term stability of the sealing surface. The mounting sleeve 33 is connected to the liquid inlet pipe through a standard interface, suitable for different pipe diameters, and facilitates quick replacement and maintenance.

[0053] Pull out the pin shaft 353, rotate the connecting sleeve 32 to separate from the fixed sleeve 31, remove the bolts to replace the filter screen 34, and then lock the pin shaft 353. Regularly check whether the pin shaft 353 is loose to ensure the threaded fastening of the connecting sleeve 32 and the fixed sleeve 31 and prevent leakage.

[0054] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A fixed hard-seal ball valve, comprising a valve body unit (1), wherein the valve body unit (1) has an outlet end (2) and an inlet end (3) respectively provided at both ends, characterized in that, The liquid inlet end (3) includes: A fixed sleeve (31) is fixedly installed at the end of the valve body unit (1); The connecting sleeve (32) has its outer end threadedly connected to the inner wall of the fixed sleeve (31); An installation sleeve (33) is fixedly installed at the end of the connecting sleeve (32) away from the fixed sleeve (31), and the installation sleeve (33) is used to install the liquid inlet pipe; A filter screen (34), which is installed at the end of the connecting sleeve (32) inside the fixed sleeve (31), is used to filter impurities in the inlet medium.

2. A fixed hard-seal ball valve according to claim 1, characterized in that, The valve body unit (1) includes: Valve body (11); The valve core (12) is rotatably connected inside the valve body (11); A valve stem (13) is rotatably mounted on the valve body (11). The bottom end of the valve stem (13) is connected to the valve core (12), and the top end of the valve stem (13) extends outward and is fixedly mounted with a handle (15).

3. A fixed hard-seal ball valve according to claim 2, characterized in that, A valve seat (14) is fixedly installed inside the valve body (11), and the outer side of the valve core (12) is tightly fitted with the valve seat (14).

4. A fixed hard-seal ball valve according to claim 1, characterized in that, The end of the connecting sleeve (32) is provided with an installation groove (321), and the filter screen (34) is fixedly connected to the installation groove (321) by bolts.

5. A fixed hard-seal ball valve according to claim 1, characterized in that, An anti-rotation component (35) is provided between the connecting sleeve (32) and the fixed sleeve (31).

6. A fixed hard-seal ball valve according to claim 5, characterized in that, The anti-rotation component (35) includes: The first fixing block (351) is fixedly installed on the outside of the fixing sleeve (31); The second fixing block (352) is fixedly installed on the outside of the connecting sleeve (32), and the second fixing block (352) is in contact with the first fixing block (351).

7. A fixed hard-seal ball valve according to claim 6, characterized in that, A through pin hole is provided between the first fixing block (351) and the second fixing block (352), and a pin shaft (353) is provided in the pin hole.

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