Cast iron ball valve capable of dredging

Abstract

The cast iron ball valve comprises a ball valve body, a bolt, a valve element and a valve switch, the ball valve body is provided with a sealing cover, the valve switch penetrates through the sealing cover, an opening and closing cover is arranged on the left side of the ball valve body, a filter plate is arranged in the left side of the ball valve body, and a clamping block is fixed to the right end of the opening and closing cover. A fixing block is fixed to the position, at the clamping block, of the ball valve body, the valve element is arranged between the ball valve body and the sealing cover, and the top of the valve element is connected with the valve switch. According to the cast iron ball valve capable of dredging, the sealing cover is arranged, the sealing cover and the ball valve body form a fixed structure through the bolt, after the ball valve is used for a long time and the valve element is abraded, the bolt is screwed off, then the sealing cover is taken down, the valve element can be replaced, the valve element can be directly replaced conveniently, and the whole ball valve is prevented from being replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a cast iron ball valve capable of clearing silt. Background Art

[0002] Valve is an important control component in a fluid transportation system. It is often connected to a pipeline. By operating the opening and closing degree of the valve, the flow of the fluid in the pipeline and the flow rate of the fluid can be controlled. In addition, valves also have various types and functions. According to their uses, valves can be divided into shut-off valves, check valves, regulating valves, vacuum valves, etc. Shut-off valves can be divided into gate valves, stop valves, diaphragm valves, ball valves, plug valves, butterfly valves, etc. according to their different structures. Among them, ball valves are most suitable as switches to control the flow or cutoff of fluids in pipelines, and ball valves are widely used in industries such as petroleum refining, long transportation pipelines, chemicals, papermaking, and daily life.

[0003] When the existing cast iron ball valve is in use, the liquid being transported may contain impurities. After long-term use, the impurities will accumulate in various parts of the ball valve. Due to the special internal structure of the ball valve, it is difficult to completely clean out the impurities accumulated in the ball valve. After long-term use, the existing cast iron ball valve will undergo repeated rotations, and the surface of the valve core inside the ball valve will be worn, thereby affecting the sealing performance inside the ball valve. In addition, the existing ball valve has a fixed structure. When the sealing performance is insufficient, the entire ball valve can only be replaced.

[0004] Therefore, we propose a cast iron ball valve that can be desilted to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a desilting cast iron ball valve to solve the problems in the current market raised by the above background technology that it is difficult to completely clean out the impurities deposited inside the ball valve and that after long-term use, the valve core must be replaced after the entire ball valve is worn.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cast iron ball valve that can be desilted, comprising a ball valve body, bolts, a valve core and a valve switch, the ball valve body being provided with a sealing cover, and the valve switch passing through the sealing cover, an opening and closing cover being provided on the left side of the ball valve body, and a filter plate being provided inside the left side of the ball valve body, a clamping block being fixed on the right end of the opening and closing cover, and a fixing block being fixed on the ball valve body at the position of the clamping block, the valve core being provided between the ball valve body and the sealing cover, and the top of the valve core being connected to the valve switch.

[0007] Preferably, two symmetrical empty grooves are provided on both sides of the opening and closing cover, and springs and snap-in balls are arranged in the empty grooves, the top of the spring is fixed to the top of the empty groove, and the bottom of the spring is fixed to the snap-in ball, and the filter plate is provided with a snap-in groove at a position corresponding to the snap-in ball.

[0008] Preferably, the left side of the opening and closing cover is movably connected to the ball valve body, the fixed block is provided with a groove of the same shape as the clamping block at the position of the clamping block, and a limiting member is arranged on the right side of the fixed block, the right end of the limiting member is movably connected to the fixed block, and the left end of the limiting member is fixed to the left end of the block by a screw to form a fixed structure.

[0009] Preferably, a rubber pad is provided on the surface of the opening and closing cover in contact with the ball valve body.

[0010] Preferably, the sealing cover forms a fixed structure with the ball valve body through bolts, and a rubber pad is provided on the surface where the sealing cover contacts the ball valve body, and the top of the valve core and the valve switch form a disassembly structure.

[0011] Preferably, the left end of the ball valve body is connected to the water inlet pipe, and the right end of the ball valve body is connected to the water outlet pipe.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the cast iron ball valve capable of desilting is

[0013] (1) A sealing cover is provided, and the sealing cover is fixed to the ball valve body through bolts. When the ball valve is used for a long time and the valve core is worn, the valve core can be replaced by unscrewing the bolts and then removing the sealing cover, which is convenient for directly replacing the valve core and avoids replacing the entire ball valve;

[0014] (2) A filter plate is provided, and the filter plate is arranged on one side of the water inlet. When the liquid enters the ball valve, it first passes through the filter plate and then is discharged from the ball valve, thereby preventing impurities in the liquid from entering the interior of the ball valve and preventing impurities from accumulating inside the ball valve;

[0015] (3) An opening and closing cover is provided, and the opening and closing cover and the ball valve body are movable structures. After the filter plate is used for a long time, impurities are deposited on the filter plate. By opening the opening and closing cover, the filter plate is taken out from the ball valve body, so that the filter plate can be cleaned or replaced, which is convenient for cleaning the impurities deposited inside the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the top view structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the filter plate position of the utility model.

[0020] In the figure: 1. ball valve body; 2. sealing cover; 201. bolt; 3. valve core; 4. valve switch; 5. opening and closing cover; 501. empty groove; 502. spring; 503. snap-in ball; 504. snap-in block; 6. filter plate; 601. snap-in groove; 7. fixing block; 8. limiter. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0022] See also Figure 1-4 The utility model provides a technical solution: a cast iron ball valve capable of desilting, comprising a ball valve body 1, a bolt 201, a valve core 3 and a valve switch 4, the ball valve body 1 is provided with a sealing cover 2, and the valve switch 4 penetrates the sealing cover 2, an opening and closing cover 5 is provided on the left side of the ball valve body 1, and a filter plate 6 is provided inside the left side of the ball valve body 1, a clamping block 504 is fixed to the right end of the opening and closing cover 5, and a fixing block 7 is fixed to the position of the clamping block 504 on the ball valve body 1, the valve core 3 is provided between the ball valve body 1 and the sealing cover 2, and the top of the valve core 3 is connected to the valve switch 4.

[0023] Two symmetrical empty grooves 501 are provided on both sides of the opening and closing cover 5, and a spring 502 and a snap-in ball 503 are arranged in the empty groove 501. The top of the spring 502 is fixed to the top of the empty groove 501, and the bottom of the spring 502 is fixed to the snap-in ball 503. The filter plate 6 is provided with a snap-in groove 601 at a position corresponding to the snap-in ball 503. When the opening and closing cover 5 is opened, the filter plate 6 can be taken out at the same time, so that the filter plate 6 is easy to replace.

[0024] The left side of the opening and closing cover 5 is movably connected to the ball valve body 1, and the fixing block 7 is provided with a groove of the same shape as the clamping block 504 at the position of the clamping block 504, and a limiting member 8 is arranged on the right side of the fixing block 7, and the right end of the limiting member 8 is movably connected to the fixing block 7, and the left end of the limiting member 8 is fixed to the left end of the fixing block 7 by a screw to form a fixed structure, and the opening and closing cover 5 can be opened by unscrewing the screw and rotating the limiting member 8, so as to facilitate the replacement of the filter plate 6.

[0025] The contact surface of the opening and closing cover 5 and the ball valve body 1 is provided with a rubber pad, so that when the opening and closing cover 5 is closed, the opening and closing cover 5 and the ball valve body 1 form a sealing structure, which is convenient for the normal use of the ball valve.

[0026] The sealing cover 2 forms a fixed structure with the ball valve body 1 through bolts 201, and a rubber pad is provided on the surface where the sealing cover 2 contacts the ball valve body 1. The top of the valve core 3 and the valve switch 4 form a disassembly structure. The sealing cover 2 can be removed from the ball valve body 1 by unscrewing the bolts 201, so as to facilitate the replacement of the valve core 3.

[0027] The left end of the ball valve body 1 is connected to the water inlet pipe, and the right end of the ball valve body 1 is connected to the water outlet pipe, so that the liquid first passes through the filter plate 6, is filtered by the filter plate 6, and then is discharged from the ball valve, so as to avoid the accumulation of impurities inside the ball valve body 1.

[0028] Working principle: When using the desilting cast iron ball valve, first connect the water inlet pipe to the left side of the ball valve body 1, and connect the water outlet pipe to the right side of the ball valve body 1, so that the liquid entering the ball valve body 1 from the water inlet pipe is first filtered by the filter plate 6, and then the valve switch 4 on the sealing cover 2 is rotated, and the valve core 3 is rotated at the same time to connect the left and right ends of the ball valve body 1, and finally the liquid is discharged from the right end of the ball valve body 1 through the valve core 3, thus completing the use of the desilting cast iron ball valve.

[0029] After using the desilting cast iron ball valve for a long time, when the filter plate 6 and the valve core 3 need to be replaced, first stop the water inlet pipe from delivering liquid, then unscrew the screw at the left end of the fixing block 7, and rotate the limiter 8, then open the opening and closing cover 5, and at the same time bring the filter plate 6 out of the ball valve body 1, then remove the filter plate 6, and install a new filter plate 6 on the opening and closing cover 5, fix the filter plate 6 on the opening and closing cover 5 through the clamping groove 601 and the clamping ball 503, then close the opening and closing cover 5, fit the clamping block 504 with the fixing block 7, then rotate the limiter 8 to above the clamping block 504, and then tighten the screw. The opening and closing cover 5 is fixed, and then the bolts 201 around the sealing cover 2 are unscrewed, and then the sealing cover 2 is removed from the ball valve body 1. At the same time, the valve switch 4 is separated from the valve core 3, and then the worn valve core 3 is taken out, and a new valve core 3 is installed inside the ball valve body 1, and then the sealing cover 2 is installed back on the ball valve body 1, and finally the bolts 201 are screwed on to fix the sealing cover 2 on the ball valve body 1, and the water inlet pipe continues to transport liquid, thus completing the replacement of the filter plate 6 and the valve core 3 of the silt-removable cast iron ball valve, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or 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 invention shall be included in the protection scope of the present invention.

Claims

1. A cast iron ball valve capable of desilting, comprising a ball valve body (1), a bolt (201), a valve core (3) and a valve switch (4), characterized in that: The ball valve body (1) is provided with a sealing cover (2), and the valve switch (4) passes through the sealing cover (2); an opening and closing cover (5) is provided on the left side of the ball valve body (1), and a filter plate (6) is provided inside the left side of the ball valve body (1); a clamping block (504) is fixed on the right end of the opening and closing cover (5), and a fixing block (7) is fixed on the ball valve body (1) at the position of the clamping block (504); the valve core (3) is provided between the ball valve body (1) and the sealing cover (2), and the top of the valve core (3) is connected to the valve switch (4).

2. A dredging cast iron ball valve according to claim 1, characterized in that: Two symmetrical empty slots (501) are provided on both sides of the opening and closing cover (5), and a spring (502) and a locking ball (503) are arranged in the empty slot (501). The top of the spring (502) is fixed to the top of the empty slot (501), and the bottom of the spring (502) is fixed to the locking ball (503). The filter plate (6) is provided with a locking slot (601) at a position corresponding to the locking ball (503).

3. A dredging cast iron ball valve according to claim 1, characterized in that: The left side of the opening and closing cover (5) is movably connected to the ball valve body (1); the fixing block (7) is provided with a groove having the same shape as the clamping block (504) at the position of the clamping block (504); and a limiting member (8) is provided on the right side of the fixing block (7); the right end of the limiting member (8) is movably connected to the fixing block (7), and the left end of the limiting member (8) is fixed to the left end of the fixing block (7) by a screw to form a fixed structure.

4. A dredging cast iron ball valve according to claim 1, characterized in that: The surface of the opening and closing cover (5) in contact with the ball valve body (1) is provided with a rubber pad.

5. A dredging cast iron ball valve according to claim 1, characterized in that: The sealing cover (2) and the ball valve body (1) form a fixed structure via bolts (201), and a rubber pad is provided on the contact surface between the sealing cover (2) and the ball valve body (1), and the top of the valve core (3) and the valve switch (4) form a disassembly structure.

6. A dredging cast iron ball valve according to claim 1, characterized in that: The left end of the ball valve body (1) is connected to the water inlet pipe, and the right end of the ball valve body (1) is connected to the water outlet pipe.

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