Plug valve with easy disassembly from pipes at both ends

Abstract

The utility model discloses a plug valve with convenient disassembly from pipelines at both ends, and relates to the technical field of plug valves, comprising: a valve body, wherein the valve body is connected with a connecting block 1, the connecting block 1 is connected with a threaded rod, the connecting rod is connected with a special-shaped block, a limiting plate, a movable block 1 and an annular rod, and the limiting block is connected with a limiting groove; the pipeline is connected with a connecting block 2, and a spring is connected with the movable block 2; the threaded rod is rotated to separate it from the annular rod, and the annular rod is pushed, so that the movable block 1 contacts with the movable block 2, so that the movable block 2 moves; when the movable block 2 contacts with another inclined surface of the movable block 1, the pipeline is pulled outward to drive the connecting block 2, so that the movable block 2 on it pushes the movable block 1 to engage with the special-shaped block, and the pipeline is continuously pulled to separate the connecting block 2 from the connecting block 1, so that the pipeline can be disassembled; the problem that the valve body and the pipeline are connected through flanges, and special tools are needed to disassemble multiple groups of bolts and nuts during disassembly, and disassembly cannot be performed at any time is solved, and the utility model is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of plug valves, in particular to a plug valve with convenient disassembly from pipelines at both ends. Background Art

[0002] A plug valve is a valve that opens, closes or adjusts the flow rate by rotating its plug body. It controls the flow of fluid media (liquid or gas) in a pipeline by rotating a plug body with a channel. Plug valves can be divided into many types according to their structure and purpose. According to the structural form, they can be divided into tight-fitting type, self-sealing type, oil injection type, etc., and according to the channel form, there are straight-through type, three-way type and four-way type.

[0003] Chinese patent CN115962301A discloses a multi-stage self-positioning flow regulating plug valve, including a valve body, a valve core and a self-positioning mechanism; flanges are provided at both ends of the valve body, a bushing is provided at the upper end of the vertical inner arc surface of the valve body, and a pressure plate is provided at the bottom wall of the vertical pipe of the valve body; a valve hole is provided in the middle of the valve core, and a rotating shaft is provided in the middle of the upper and lower surfaces of the valve core, the lower rotating shaft is rotatably connected to the pressure plate through a sealing bearing 1, and the upper rotating shaft is rotatably connected to the bushing through a sealing bearing 2, the outer arc surface of the valve core is fitted with the vertical inner arc surface of the valve body, and a rotating column is provided at the upper end of the upper rotating shaft. The present invention realizes multi-stage automatic positioning of the valve core by plugging the graded positioning pins and positioning holes when the valve core rotates to different positions, which is suitable for occasions where there are multiple flow values ​​and each flow value is a fixed value, making the adjustment process easier and more convenient, and the adjustment result more accurate.

[0004] In the above patent, the connection is made by setting flanges and pipelines. When the plug valve and the pipeline are disassembled and separated, it is necessary to use special tools to rotate and disassemble multiple sets of bolts and nuts. It is impossible to disassemble at any time and it is relatively troublesome. Utility Model Content

[0005] The utility model aims to provide a plug valve with convenient disassembly from pipelines at both ends, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a plug valve with convenient disassembly from pipelines at both ends, comprising: a valve body and a pipeline, a connecting block 1 is fixed to the outer wall at both ends of the valve body, a connecting rod is horizontally slidable on the connecting block 1, both ends of the connecting rod pass through the connecting block 1, a special-shaped block and a limit plate located outside the connecting block 1 are fixed to the end of the connecting rod away from the valve body, the limit plate is located between the special-shaped block and the connecting block 1, a movable block 1 sliding with the connecting rod is provided between the special-shaped block and the limit plate, an annular rod is fixed to the other end of the connecting rod, the annular rod is movably contacted with a threaded rod threadedly connected to the connecting block 1, a limit groove sliding with the limit block is horizontally opened in the connecting block 1, and the limit block and the connecting rod are fixed; a connecting block 2 is fixed to the outer wall at one end of the pipeline, a connecting groove sliding with the special-shaped block is horizontally opened on the two end walls of the connecting block, a guide groove interpenetrating with the connecting groove and perpendicular to each other is opened in the connecting block 2, a spring parallel to the guide groove is fixed in the guide groove, and a movable block 2 movably connected with the special-shaped block and the movable block 1 is fixed to the end of the spring close to the connecting groove.

[0007] Furthermore, rubber pads are fixed to the end walls at both ends of the valve body, and the rubber pads are located on the inner side of the connecting block one. A guide ring is fixed to the outer wall of the connecting block one, and the length of the guide ring is greater than the length of the connecting block one.

[0008] Furthermore, the connecting block is horizontally provided with slots for sliding with connecting rods, four slots are provided and are ninety degrees apart, four connecting rods are provided, and an annular rod which is sleeved on the outer sides of both ends of the valve body is fixed to one end of the four connecting rods close to the valve body.

[0009] Furthermore, the special-shaped block is located outside the movable block one, the side of the special-shaped block close to the lower end of the movable block two is an inclined surface, both sides of the upper end of the movable block one are inclined surfaces, the side of the movable block one close to the special-shaped block is in active contact with the special-shaped block, and the limiting groove and the groove hole are connected.

[0010] Furthermore, the outer wall of the connecting block 2 is in sliding contact with the inner wall of the guide ring, and four connecting grooves are provided and are 90 degrees apart, and correspond one to one with the special-shaped blocks respectively.

[0011] Furthermore, the cross section of the movable block 2 is a right-angled trapezoid, the inclined surface of the movable block 2 is located in the connecting groove, and a guide rod sliding with the guide groove is fixed to the side wall of one end of the movable block 2 close to the spring.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0013] 1. When installing the pipeline, the utility model aligns the second connecting block on the pipeline into the guide ring and slides on the inner wall thereof, and the special-shaped block slides in the connecting groove. When the inclined surface of the special-shaped block contacts and slides relatively with the inclined surface of the second movable block, the special-shaped block moves the second movable block, and the second movable block compresses the spring. When the second movable block passes through the special-shaped block, the second movable block returns to its original position under the elastic force of the spring. At this time, the second movable block is located between the special-shaped block and the first movable block. At the same time, the pipeline contacts the rubber pad, and the threaded rod is rotated so that one end thereof is in close contact with the annular rod to complete the installation of the pipeline. When disassembling the pipeline, the threaded rod is rotated to separate it from the annular rod, and the annular rod is pushed to drive the connecting rod to slide in the groove hole, and the connecting rod is connected. The rod moves the movable block 1 through the limit plate, and at the same time, the inclined surface of the movable block 1 contacts the inclined surface of the movable block 2, so that the movable block 2 moves. When the movable block 2 contacts the other inclined surface of the movable block 1, the movable block 2 returns to its original position, and the pipeline is pulled outward. The pipeline drives the connecting block 2 so that the movable block 2 on it pushes the movable block 1 and the special-shaped block to engage. The pipeline is continuously pulled outward so that the movable block 2 passes through the movable block 1 and the special-shaped block, so that the connecting block 2 and the connecting block 1 are separated, thereby realizing the disassembly of the pipeline; the problem that the valve body and the pipeline are connected through flanges, and when the valve body and the pipeline are disassembled and separated, it is necessary to use special tools to rotate and disassemble multiple sets of bolts and nuts, and it is impossible to disassemble at any time is solved, which is more convenient;

[0014] 2. The utility model sets an annular rod, which is connected to four connecting rods. When disassembling the pipeline, pushing one annular rod can drive the four connecting rods to move at the same time, so that it is more convenient to disassemble the pipeline. The threaded rod is set to prevent the movable block 2 on the connecting block 2 from driving the connecting rod to move when the liquid flows through the pipeline, so that the connecting block 1 and the connecting block 2 are stably connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the connection between the valve body and the pipeline of the utility model;

[0017] Figure 2 This is a schematic diagram of the separation of the valve body and the pipeline of the utility model;

[0018] Figure 3 This is a schematic diagram of the upper structure connection of the connection block of the utility model;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0020] Figure 5This is a schematic diagram of the structural connection on the pipeline of the utility model;

[0021] Figure 6 This utility model Figure 5 A magnified schematic diagram of the structure of the middle B region;

[0022] In the figure: 1. valve body; 2. pipeline; 3. connecting block 1; 4. guide ring; 5. connecting block 2; 6. rubber pad; 7. annular rod; 8. special-shaped block; 9. connecting rod; 10. movable block 1; 11. limit plate; 12. slot; 13. limit block; 14. limit groove; 15. connecting groove; 16. guide groove; 17. spring; 18. guide rod; 19. movable block 2; 20. threaded rod. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-Figure 6The utility model provides a technical solution: a plug valve with convenient disassembly from pipelines at both ends, comprising: a valve body 1 and a pipeline 2, the outer walls of both ends of the valve body 1 are fixed with connecting blocks 3, the end walls of both ends of the valve body 1 are fixed with rubber pads 6, and the rubber pads 6 are located on the inner side of the connecting block 3, the rubber pads 6 improve the sealing performance of the connection between the pipeline 2 and the valve body 1, the outer wall of the connecting block 3 is sleeved with a guide ring 4, the length of the guide ring 4 is greater than the length of the connecting block 3, the guide ring 4 is used for the corresponding connection block 5 and the connecting block 3, so that The special-shaped block 8 and the connecting groove 15 correspond one by one, which is more convenient. The connecting block 3 is horizontally slid with a connecting rod 9, and both ends of the connecting rod 9 pass through the connecting block 3. The connecting block 3 is horizontally provided with a slot hole 12 that slides with the connecting rod 9. There are four slot holes 12 and they are ninety degrees apart. There are four connecting rods 9. The four connecting rods 9 are fixed with an annular rod 7 sleeved on the outside of the two ends of the valve body 1 at one end close to the valve body 1. The connecting rod 9 is fixed with a special-shaped block 8 and a limit plate 11 located on the outside of the connecting block 3 at one end away from the valve body 1. The distance between the block 8 and the limit plate 11 is equal to the width of the movable block 2 19. The limit plate 11 is located between the special-shaped block 8 and the connecting block 13. When the connecting block 13 and the connecting block 25 are not connected, the movable block 10 is in contact with the limit plate 11. A movable block 10 that slides with the connecting rod 9 is provided between the special-shaped block 8 and the limit plate 11. The other end of the connecting rod 9 is fixed with an annular rod 7. The annular rod 7 is in movable contact with a threaded rod 20 that is threadedly connected with the connecting block 3. A horizontal opening that slides with the limit block 13 is provided in the connecting block 3. The limiting groove 14, the limiting block 13 and the connecting rod 9 are fixed. When the pipeline 2 and the valve body 1 are connected, the limiting block 13 and the innermost side of the limiting groove 14 are connected. When the special-shaped block 8 and the movable block 2 19 are in contact, the connecting rod 9 will not move. The special-shaped block 8 is located on the outside of the movable block 10. The side of the special-shaped block 8 close to the lower end of the movable block 2 19 is an inclined surface. Both sides of the upper end of the movable block 10 are inclined surfaces. The side of the movable block 10 close to the special-shaped block 8 is in active contact with the special-shaped block 8. The limiting groove 14 and the slot hole 12 are connected.The outer wall of one end of the pipe 2 is fixed with a connecting block 2 5, and the end wall of the connecting block 2 5 is horizontally provided with a connecting groove 15 that slides with the special-shaped block 8. The outer wall of the connecting block 2 5 and the inner wall of the guide ring 4 are in sliding contact. There are four connecting grooves 15 that are 90 degrees apart and correspond to the special-shaped blocks 8 one by one. A guide groove 16 that penetrates the connecting groove 15 and is perpendicular to each other is provided in the connecting block 2 5. A spring 17 parallel to the guide groove 16 is fixed in the guide groove 16. The spring 17 is fixed near one end of the connecting groove 15. There is a movable block 19 movably connected with the special-shaped block 8 and the movable block 10. The cross section of the movable block 19 is a right-angle trapezoid. The inclined surface of the movable block 19 is located in the connecting groove 15. The side wall of the movable block 19 close to the spring 17 is fixed with a guide rod 18 that slides with the guide groove 16. The guide rod 18 can make the movable block 19 move more stably and can also avoid that the end of the spring 17 is in the connecting groove 15 under the long-term dead weight of the movable block 19, thereby making it inconvenient to connect the pipeline 2 and the valve body 1. ;

[0025] Working principle of this utility model:

[0026] Refer to the instruction manual Figure 1-6When installing the pipeline 2, align the connecting block 2 5 on the pipeline 2 with the guide ring 4 and slide on its inner wall. At this time, the connecting groove 15 corresponds to the special-shaped block 8, and the special-shaped block 8 slides in the connecting groove 15. When the inclined surface of the special-shaped block 8 contacts and slides relatively with the inclined surface of the movable block 2 19, the special-shaped block 8 moves the movable block 2 19, and the movable block 2 19 drives the guide rod 18 to slide in the guide groove 16. At the same time, the movable block 2 19 compresses the spring 17. When the movable block 2 19 passes through the special-shaped block 8, the movable block 2 19 returns to its original position under the elastic force of the spring 17. At this time, the movable block 2 19 is located between the special-shaped block 8 and the movable block 10. At the same time, the pipeline 2 contacts the rubber pad 6, and the threaded rod 20 is rotated so that one end of it is in close contact with the annular rod 7, thereby completing the installation of the pipeline 2; when disassembling the pipeline 2, the threaded rod 20 is rotated to separate it from the annular rod 7, and the annular rod 7 is pushed, and the annular rod 7 drives the connecting rod 9 Sliding in the slot 12, the connecting rod 9 drives the limit block 13 to slide in the limit groove 14, and at the same time, the connecting rod 9 moves the movable block 10 through the limit plate 11, and at the same time, the inclined surface of the movable block 10 contacts the inclined surface of the movable block 2 19, so that the movable block 2 19 moves. When the movable block 2 19 contacts the other inclined surface of the movable block 10, the movable block 2 19 returns to its original position and pulls the pipeline 2 outward. The pipeline 2 drives the connecting block 2 5 so that the movable block 2 19 on it pushes the movable block 10 and the special-shaped block 8 to engage, and the pipeline 2 is continued to be pulled outward so that the movable block 2 19 passes through the movable block 10 and the special-shaped block 8, so that the connecting block 2 5 and the connecting block 1 3 are separated, thereby realizing the disassembly of the pipeline 2; it solves the problem that the valve body 1 and the pipeline 2 are connected by flanges, and when the valve body 1 and the pipeline 2 are disassembled and separated, it is necessary to use special tools to rotate and disassemble multiple sets of bolts and nuts, and it is impossible to disassemble at any time, which is more convenient.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Plug valve with easy disassembly from pipeline at both ends, including: A valve body (1) and a pipeline (2), characterized in that: a connecting block (3) is fixed to the outer wall at both ends of the valve body (1), the connecting block (3) is horizontally slidable with a connecting rod (9), both ends of the connecting rod (9) pass through the connecting block (3), the end of the connecting rod (9) away from the valve body (1) is fixed with a special-shaped block (8) and a limit plate (11) located outside the connecting block (3), the limit plate (11) is located between the special-shaped block (8) and the connecting block (3), a movable block (10) sliding with the connecting rod (9) is provided between the special-shaped block (8) and the limit plate (11), the other end of the connecting rod (9) is fixed with an annular rod (7), the annular rod (7) is movably contacted with a threaded connection with the connecting block (3) A threaded rod (20) connected to the connecting rod (20) is provided in the connecting block (3), a limit groove (14) is horizontally provided in the connecting block (3) and is slidable with the limit block (13), and the limit block (13) and the connecting rod (9) are fixed; a connecting block (5) is fixed on the outer wall of one end of the pipeline (2), a connecting groove (15) is horizontally provided in the end wall of the connecting block (5) and is slidable with the special-shaped block (8), a guide groove (16) is provided in the connecting block (5) and is interlinked with the connecting groove (15) and is perpendicular to each other, a spring (17) is fixed in the guide groove (16) and is parallel to the guide groove (16), and a movable block (19) movably connected with the special-shaped block (8) and the movable block (10) is fixed at one end of the spring (17) close to the connecting groove (15).

2. The plug valve with convenient disassembly of both ends from the pipeline according to claim 1, characterized in that: The end walls at both ends of the valve body (1) are fixed with rubber pads (6), and the rubber pads (6) are located on the inner side of the connecting block (3). The outer wall of the connecting block (3) is sleeved with a guide ring (4), and the length of the guide ring (4) is greater than the length of the connecting block (3).

3. The plug valve with convenient disassembly of both ends from the pipeline according to claim 1, characterized in that: The connecting block (3) is horizontally provided with slots (12) for sliding with the connecting rod (9), four slots (12) are provided and are 90 degrees apart, four connecting rods (9) are provided, and an annular rod (7) which is sleeved on the outer sides of the two ends of the valve body (1) is fixed to one end of the four connecting rods (9) close to the valve body (1).

4. The plug valve with convenient disassembly of both ends from the pipeline according to claim 3, characterized in that: The special-shaped block (8) is located outside the movable block one (10); a side of the special-shaped block (8) close to the lower end of the movable block two (19) is an inclined surface; both sides of the upper end of the movable block one (10) are inclined surfaces; a side of the movable block one (10) close to the special-shaped block (8) is in movable contact with the special-shaped block (8); and the limiting groove (14) and the groove hole (12) are connected.

5. The plug valve with convenient disassembly of both ends from the pipeline according to claim 1, characterized in that: The outer wall of the second connecting block (5) is in sliding contact with the inner wall of the guide ring (4), and four connecting grooves (15) are provided and are 90 degrees apart, and correspond one to one with the special-shaped blocks (8) respectively.

6. The plug valve with convenient disassembly of both ends from the pipeline according to claim 1, characterized in that: The cross section of the movable block 2 (19) is a right-angle trapezoid, the inclined surface of the movable block 2 (19) is located in the connecting groove (15), and a guide rod (18) sliding with the guide groove (16) is fixed to the side wall of one end of the movable block 2 (19) close to the spring (17).

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