Maintenance-free retention-free tank bottom ball valve

Abstract

The utility model discloses a maintenance-free retention-free tank bottom ball valve which comprises a valve body, an end cover is fixedly connected to the inner wall of the valve body, a valve seat is fixedly connected to the inner wall of the valve body, a ball body is attached to the inner wall of the valve seat, a valve rod is fixedly connected to the upper portion of the ball body, the valve rod extends into the valve body, and the end cover is fixedly connected to the inner wall of the valve body. The outer wall of the valve rod is rotationally connected to the inner wall of the valve body, and a limiting mechanism is arranged outside the valve body. The utility model relates to the technical field of ball valves, in particular to a maintenance-free retention-free tank bottom ball valve, which realizes the separation of the ball valve and a flange plate through the matching among a hoop, a connecting block, a bolt, a clamping block and an inserting plate, only the ball valve needs to be replaced, and solves the problem that when the existing maintenance-free retention-free ball valve is replaced, the ball valve and the flange plate are movable, so that the replacement is inconvenient. The flange plate needs to be separated from an external pipeline, and the ball valve and the flange plate are replaced at the same time, which is troublesome, so that the replacement cost of the ball valve is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a maintenance-free bottom ball valve without retention tank. Background Technique

[0002] A ball valve is a valve in which the closing member (ball) is driven by a valve stem and rotates around the axis of the ball valve, and can also be used for the regulation and control of fluids.

[0003] When the existing maintenance-free bottom ball valve without retention tank is in use, the staff connects it to the external pipeline through a flange, and rotates the ball by rotating the valve stem to discharge the semiconductor material.

[0004] However, when the existing maintenance-free bottom ball valve without retention is replaced, since the ball valve and the flange are movable, it is necessary to separate the flange from the external pipeline and replace the ball valve and the flange at the same time, which is rather troublesome and thus increases the replacement cost of the ball valve. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a maintenance-free bottom ball valve without retention tank, which solves the problem that when the existing maintenance-free bottom ball valve without retention is replaced, since the ball valve and the flange are movable, it is necessary to separate the flange from the external pipeline and replace the ball valve and the flange at the same time, which is rather troublesome and thus increases the replacement cost of the ball valve.

[0006] To achieve the above object, the utility model is realized through the following technical solutions: A maintenance-free bottom ball valve without retention tank, comprising a valve body, an end cover is fixedly connected to the inner wall of the valve body, a valve seat is fixedly connected to the inner wall of the valve body, a ball is fitted to the inner wall of the valve seat, a valve stem is fixedly connected above the ball, the valve stem extends into the valve body, the outer wall of the valve stem is rotatably connected to the inner wall of the valve body, a flange is fitted to the outer wall of the valve body, a replacement mechanism is arranged outside the valve body, and the replacement mechanism includes: a clamp, which is respectively fitted to the outer wall of the valve body and the two clamps are in contact with each other; a connecting block, which is fixedly connected to the outer wall of the clamp and the two connecting blocks are in contact with each other; a bolt, which is threadedly connected to the inner wall of the connecting block; a curved plate, which is fixedly connected to the outer wall of the flange and is inserted into the inner wall of the valve body; a clamping block, which is fixedly connected to the outer wall of the clamp and is respectively inserted into the inner wall of the valve body and the inner wall of the curved plate; a sealing assembly, which is arranged on the outer wall of the valve body; wherein, when the bolt is removed from the connecting block, the two clamps are removed from the valve body, the ball valve is separated from the flange, and only the ball valve needs to be replaced. The valve stem is sealed at multiple places through the sealing assembly.

[0007] Preferably, the sealing assembly includes: a curved plate, which fits against the inner wall of the valve body; screws, which are respectively threadedly connected to the curved plate and the inner wall of the valve body; and a second sealing ring, which respectively fits against the inner wall of the curved plate and the inner wall of the valve stem. Wherein, through the cooperation of the screws and the curved plate, a plurality of the second sealing rings are fixed on the surface of the valve stem to perform multi-point sealing on the valve stem.

[0008] Preferably, a bottom flange of the tank is fixedly connected to the outer wall of the valve body.

[0009] Preferably, a first sealing ring fits against the outer wall of the valve body, and the outer wall of the first sealing ring fits against the inner wall of the bottom flange of the tank.

[0010] Preferably, connection holes are provided in the inner wall of the flange.

[0011] Advantages

[0012] The utility model provides a maintenance-free bottom tank ball valve without retention, which has the following advantages: through the cooperation among the clamp, the connecting block, the bolt, the clamping block and the inserting plate, the separation of the ball valve and the flange is realized, and only the ball valve needs to be replaced, solving the problem that when the existing maintenance-free bottom tank ball valve is replaced, since the ball valve and the flange are movable, the flange needs to be separated from the external pipeline and both the ball valve and the flange need to be replaced, which is rather troublesome and thus increases the replacement cost of the ball valve.

[0013] Through the cooperation among the curved plate, the screw and the second sealing ring, multi-point sealing of the valve stem is realized, making the sealing of the valve stem more effective, and solving the problem that the existing valve stem is sealed with the valve body only through one sealing ring, resulting in poor sealing between the valve stem and the valve body. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the utility model;

[0015] Figure 2 is Figure 1 the external appearance schematic diagram of

[0016] Figure 3 is Figure 1 the structural schematic diagram of the clamp, the clamping block and the inserting plate in

[0017] Figure 4 is Figure 1 the structural schematic diagram of the valve body, the valve stem and the curved plate in

[0018] In the figure: 1. Valve body; 11. Bottom flange of the tank; 111. First sealing ring; 2. End cover; 4. Sphere; 5. Valve stem; 6. Replacement mechanism; 61. Clamp; 62. Connecting block; 63. Bolt; 64. Locking block; 65. Insert plate; 66. Sealing assembly; 661. Curved plate; 662. Screw; 663. Second sealing ring; 7. Flange; 71. Connecting hole. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] When replacing the existing maintenance-free non-retention ball valve, since the ball valve and the flange are movable, it is necessary to separate the flange from the external pipeline and replace the ball valve and the flange at the same time, which is rather troublesome and thus increases the replacement cost of the ball valve.

[0021] In view of this, the present invention provides a maintenance-free non-retention bottom ball valve for a tank. Through the cooperation among the clamp, the connecting block, the bolt, the locking block and the insert plate, the separation of the ball valve and the flange is realized, and only the ball valve needs to be replaced, solving the problem that when replacing the existing maintenance-free non-retention ball valve, since the ball valve and the flange are movable, it is necessary to separate the flange from the external pipeline and replace the ball valve and the flange at the same time, which is rather troublesome and thus increases the replacement cost of the ball valve.

[0022] Those skilled in the art shall connect the components in this case in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process.

[0023] Example 1, consisting of Figures 1-4It can be seen that a maintenance-free bottomless retention ball valve in this case includes a valve body 1. An end cover 2 is fixedly connected to the inner wall of the valve body 1, and a valve seat 3 is fixedly connected to the inner wall of the valve body 1. The all-inclusive valve seat makes there be no accumulated material in the cavity, reduces the gap between the valve seat 3 and the bottom flange of the tank, and there is even less accumulated material this time. A sphere 4 is attached to the inner wall of the valve seat 3, and the sphere 4 rotates on the valve seat 3. Rotate the sphere 4 by ninety degrees to open the whole ball valve and discharge the semiconductor raw materials inside the tank. After the discharge is completed, the staff rotates the valve stem 5 in the reverse direction, thereby driving the sphere 4 to rotate ninety degrees in the reverse direction to close the whole ball valve. A valve stem 5 is fixedly connected above the sphere 4. The staff rotates the valve stem 5, and the valve stem 5 drives the sphere 4 to rotate. The valve stem 5 extends into the interior of the valve body 1, and the inclination angle between the valve stem 5 and the valve body 1 is larger, and the interference probability is smaller. The outer wall of the valve stem 5 is rotatably connected to the inner wall of the valve body 1. A flange 7 is attached to the outer wall of the valve body 1, and the flange 7 is connected to an external pipeline. A replacement mechanism 6 is arranged outside the valve body 1. The replacement mechanism 6 includes: a clamp 61, which are respectively attached to the outer wall of the valve body 1 and are in contact with each other between the two clamps 61; a connecting block 62, which is fixedly connected to the outer wall of the clamp 61 and is in contact with each other between the two connecting blocks 62; a bolt 63, which is threadedly connected to the inner wall of the connecting block 62; a plug board 65, which is fixedly connected to the outer wall of the flange 7 and is inserted into the inner wall of the valve body 1; a clamping block 64, which is fixedly connected to the outer wall of the clamp 61 and is respectively inserted into the inner wall of the valve body 1 and the inner wall of the plug board 65; a sealing component 66, which is arranged on the outer wall of the valve body 1. Among them, when the bolt 63 is removed from the connecting block 62, the two clamps 61 are removed from the valve body 1, and the ball valve is separated from the flange 7, and only the ball valve needs to be replaced. The sealing component 66 seals the valve stem 5 at multiple places;

[0024] In the specific implementation process, it is particularly worth noting that the fully enclosed valve seat makes there be no accumulated material in the cavity, reduces the gap between the valve seat 3 and the bottom flange of the tank, resulting in even less accumulated material this time. The inclination angle between the valve stem 5 and the valve body 1 is larger, and the interference probability is smaller. The staff rotates the valve stem 5, and the valve stem 5 drives the sphere 4 to rotate. The sphere 4 rotates on the valve seat 3. Rotate the sphere 4 by ninety degrees to fully open the ball valve and discharge the semiconductor raw materials inside the tank. After the discharge is completed, the staff rotates the valve stem 5 in the reverse direction, thereby driving the sphere 4 to rotate ninety degrees in the reverse direction to fully close the ball valve. Connect the flange 7 to the external pipeline. When the ball valve needs to be replaced, the staff rotates the bolts 63 on both sides in sequence to make the bolts 63 leave the connecting blocks 62 on both sides. The staff removes the two clamps 61 from the valve body 1, separates the flange 7 from the ball valve. The staff inserts the insertion plate 65 on the flange 7 into the new ball valve. The staff re-attaches the two clamps 61 to the valve body 1. The two clamps 61 drive the clamping blocks 64 to move, and the clamping blocks 64 on both sides are inserted into the valve body 1 and the insertion plate 65. The staff rotates the bolts 63 on both sides in the reverse direction in sequence and rotates the bolts 63 back into the two connecting blocks 62 to fix the flange 7 to the new ball valve, realizing the separation of the ball valve from the flange 7;

[0025] Furthermore, the sealing assembly 66 includes: a curved plate 661, which fits against the inner wall of the valve body 1. The staff puts three second sealing rings 663 into the two curved plates 661 on both sides. The staff puts the two curved plates 661 into the interior of the valve body 1, and the two curved plates 661 fit together. Screws 662 are respectively threadedly connected to the curved plate 661 and the inner wall of the valve body 1. The staff rotates the screws 662 to fix the two curved plates 661 to the valve body 1, so that the inner walls of the three second sealing rings 663 closely fit on the valve stem 5. The second sealing ring 663 is composed of two semi-circular sealing rings, which respectively fit against the inner wall of the curved plate 661 and the inner wall of the valve stem 5. Among them, through the cooperation of the screws 662 and the curved plate 661, multiple second sealing rings 663 are fixed on the surface of the valve stem 5 to perform multiple seals on the valve stem 5;

[0026] In the specific implementation process, it is particularly worth noting that the second sealing ring 663 is composed of two semi-circular sealing rings. First, the staff puts three second sealing rings 663 into the two curved plates 661 on both sides. The staff puts the two curved plates 661 into the interior of the valve body 1, and the two curved plates 661 fit together. Then the staff rotates the screws 662 to fix the two curved plates 661 to the valve body 1, so that the inner walls of the three second sealing rings 663 closely fit on the valve stem 5 to perform multiple seals on the valve stem 5 and make the seal of the valve stem 5 more effective;

[0027] Specifically, the staff rotates the valve stem 5, and the valve stem 5 drives the sphere 4 to rotate. The sphere 4 rotates on the valve seat 3. The sphere 4 is rotated by ninety degrees to open the entire ball valve, and the semiconductor raw materials inside the tank body are discharged. After the discharge is completed, the staff rotates the valve stem 5 in the reverse direction, thereby driving the sphere 4 to rotate ninety degrees in the reverse direction to close the entire ball valve. When the ball valve needs to be replaced, the staff rotates the bolts 63 on both sides in sequence, so that the bolts 63 leave the connecting blocks 62 on both sides. The staff removes the valve body 1 from the two clamps 61, separates the flange 7 from the ball valve. The staff inserts the insertion plate 65 on the flange 7 into the new ball valve. The staff reattaches the two clamps 61 to the valve body 1. The two clamps 61 drive the clamping blocks 64 to move. The clamping blocks 64 on both sides are inserted into the valve body 1 and the insertion plate 65. The staff rotates the bolts 63 on both sides in the reverse direction in sequence, and rotates the bolts 63 back into the two connecting blocks 62 to fix the flange 7 to the new ball valve, realizing the separation of the ball valve from the flange 7. When the valve stem 5 needs to be sealed, first, the staff places three second sealing rings 663 into the two curved plates 661 on both sides. The staff places the two curved plates 661 into the interior of the valve body 1, and the two curved plates 661 are attached together. Then the staff rotates the screw 662 to fix the two curved plates 661 to the valve body 1, so that the inner walls of the three second sealing rings 663 are closely attached to the valve stem 5, sealing the valve stem 5 at multiple points and making the sealing of the valve stem 5 more effective.

[0028] Embodiment 2. From Figure 1 and 2 it can be seen that the outer wall of the valve body 1 is fixedly connected with a bottom flange 11 of the tank, and the bottom flange 11 of the tank is connected to the external tank body;

[0029] In the specific implementation process, it is worth noting that the bottom flange 11 of the tank is connected to the external tank body;

[0030] Furthermore, a first sealing ring 111 is attached to the outer wall of the valve body 1. The first sealing ring 111 increases the sealing performance between the valve body 1 and the bottom flange 11 of the tank, thereby improving the overall sealing performance of the ball valve. The outer wall of the first sealing ring 111 is attached to the inner wall of the bottom flange 11 of the tank;

[0031] In the specific implementation process, it is worth noting that the first sealing ring 111 increases the sealing performance between the valve body 1 and the bottom flange 11 of the tank, thereby improving the overall sealing performance of the ball valve;

[0032] Furthermore, a connection hole 71 is provided on the inner wall of the flange 7. The staff connects the flange 7 to the external pipeline through the connection hole 71, which facilitates the fixing of the entire ball valve to the pipeline;

[0033] In the specific implementation process, it is particularly worth noting that the staff connects the flange 7 to the external pipeline through the connection hole 71, which facilitates the overall fixing of the ball valve to the pipeline.

[0034] Specifically, the bottom flange 11 of the tank is connected to the external tank body. The staff connects the flange 7 to the external pipeline through the connection hole 71, which facilitates the overall fixing of the ball valve to the pipeline. The first sealing ring 111 enhances the sealing performance between the valve body 1 and the bottom flange 11 of the tank, thereby improving the overall sealing performance of the ball valve.

[0035] It should be noted that in this article, relational terms such as first and second 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0036] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A maintenance-free bottom ball valve without retention tank, comprising a valve body (1), characterized in that: An end cover (2) is fixedly connected to the inner wall of the valve body (1). A valve seat (3) is fixedly connected to the inner wall of the valve body (1). A sphere (4) is fitted to the inner wall of the valve seat (3). A valve stem (5) is fixedly connected above the sphere (4). The valve stem (5) extends into the interior of the valve body (1). The outer wall of the valve stem (5) is rotatably connected to the inner wall of the valve body (1). A flange (7) is fitted to the outer wall of the valve body (1). A replacement mechanism (6) is provided outside the valve body (1). The replacement mechanism (6) includes: Clamps (61) which are respectively fitted to the outer wall of the valve body (1), and the two clamps (61) are in contact with each other; Connecting blocks (62) which are fixedly connected to the outer walls of the clamps (61), and the two connecting blocks (62) are in contact with each other; Bolts (63) which are threadedly connected to the inner walls of the connecting blocks (62); Insertion plates (65) which are fixedly connected to the outer wall of the flange (7) and are inserted into the inner wall of the valve body (1); Locking blocks (64) which are fixedly connected to the outer walls of the clamps (61) and are respectively inserted into the inner wall of the valve body (1) and the inner wall of the insertion plate (65); A sealing assembly (66) which is arranged on the outer wall of the valve body (1); Among them, when the bolts (63) are removed from the connecting blocks (62), the two clamps (61) are removed from the valve body (1), and the ball valve is separated from the flange (7). Only the ball valve needs to be replaced. The valve stem (5) is sealed at multiple places through the sealing assembly (66).

2. The maintenance-free bottom ball valve without retention tank according to claim 1, characterized in that: The sealing assembly (66) includes: Curved plates (661) which are fitted to the inner wall of the valve body (1); Screws (662) which are respectively threadedly connected to the inner walls of the curved plates (661) and the valve body (1); Second sealing rings (663) which are respectively fitted to the inner walls of the curved plates (661) and the inner wall of the valve stem (5); Among them, through the cooperation of the screws (662) and the curved plates (661), multiple second sealing rings (663) are fixed on the surface of the valve stem (5) to seal the valve stem (5) at multiple places.

3. A maintenance-free bottom ball valve without retention tank according to claim 1, characterized in that: A bottom flange of the tank (11) is fixedly connected to the outer wall of the valve body (1).

4. The maintenance-free bottom ball valve without retention tank according to claim 1, characterized in that: A first sealing ring (111) is fitted to the outer wall of the valve body (1), and the outer wall of the first sealing ring (111) is fitted to the inner wall of the bottom flange of the tank (11).

5. The non-maintenance and non-retention bottom ball valve according to claim 3, characterized in that: Connection holes (71) are formed in the inner wall of the flange (7).

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