A double plug valve

Abstract

This utility model discloses a double-turn stopcock valve, belonging to the technical field of stopcock valves. It includes a valve body with a conveying channel inside. A valve core is disposed on the inner wall of the conveying channel. A valve cover is fixedly disposed on the valve body. A rotating shaft is disposed inside the valve cover. A locking block is fixedly disposed at the end of the rotating shaft facing the valve body. A connecting block is fixedly disposed at the end of the valve core facing the rotating shaft. The connecting block has a locking groove, allowing the locking block to insert into the locking groove. A fixing block is disposed on one side of the rotating shaft. A fixing groove is disposed on the connecting block. A pushing structure is provided on the rotating shaft for pushing the fixing block to insert into the fixing groove. A cover plate is fixedly disposed at the end of the rotating shaft away from the valve core. This utility model allows for easy replacement or maintenance of the valve core by removing it, preventing the device from malfunctioning due to valve core failure and effectively extending the overall service life of the equipment.

Description

Technical Field

[0001] This utility model relates to a double plug valve, belonging to the field of plug valve technology. Background Technology

[0002] A plug valve is a type of valve that controls the flow of fluid by rotating a valve core. Due to its simple structure and rapid switching, it is widely used in fluid transport systems in the petroleum, chemical, and water treatment industries. Currently, most commercially available plug valves use a non-detachable connection between the valve core and body. While this ensures the stability of the valve core during operation, it prevents separation of the valve core and body when the valve core malfunctions and needs replacement or maintenance. This often necessitates disassembling the entire valve from the transport system and replacing the entire device, thus reducing its service life. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a double plug valve, which solves the problem in the prior art that when the valve core fails and needs to be replaced or maintained, it is impossible to separate the valve core from the valve body. Often, the entire valve needs to be disassembled from the conveying system and the entire device needs to be replaced, which reduces the service life.

[0004] The technical problem to be solved by this utility model is achieved by the following technical solution: A double plug valve includes a valve body, a conveying channel is provided inside the valve body, a valve core is provided on the inner wall of the conveying channel, a valve cover is fixedly provided on the valve body, a rotating shaft is provided inside the valve cover, a locking block is fixedly provided at one end of the rotating shaft facing the valve body, a connecting block is fixedly provided at one end of the valve core facing the rotating shaft, a locking groove is provided on the connecting block, the locking block can be inserted into the locking groove, a fixing block is provided on one side of the rotating shaft, a fixing groove is provided on the connecting block, a pushing structure is provided on the rotating shaft for pushing the fixing block to insert into the fixing groove, and a cover plate is fixedly provided at the end of the rotating shaft away from the valve core.

[0005] By adopting the above technical solution, the rotating cover plate drives the rotating shaft to rotate. The rotating shaft, with the cooperation of the locking block and the locking groove, drives the valve core to rotate. The valve core connects the conveying channel to realize the conveying of liquid. When the valve core needs to be replaced, the fixing block is inserted into the fixing groove by pushing the structure, which completes the radial connection between the locking block and the connecting block. At this time, pulling the cover plate drives the rotating shaft to move. Under the action of the locking block and the connecting block, the rotating shaft drives the valve core to move away from the valve body, so that the valve core can be removed. By removing the valve core, it is convenient to replace or maintain the valve core, avoiding the inability of the device to operate normally due to valve core failure, and effectively extending the overall service life of the equipment.

[0006] The present invention is further configured such that: the pushing structure includes a first mounting groove, a sliding groove, a sliding channel, a sliding block, and a first push rod. The first mounting groove is formed on the locking block, and the fixing block is slidably disposed inside the first mounting groove. The sliding groove is formed on the rotating shaft, and the rotating shaft is also provided with a sliding channel. One end of the sliding channel is connected to the sliding groove, and the other end of the sliding channel extends into the interior of the locking block and is connected to the first mounting groove. The end of the fixing block away from the fixing groove can extend into the interior of the sliding channel and abut against the first push rod. The sliding block is slidably disposed on the inner wall of the sliding groove, and the first push rod is fixedly disposed on the sliding block. One end of the rotating shaft extends into the interior of the sliding channel and can abut against the fixing block.

[0007] The present invention is further configured such that: a first positioning groove is provided on the inner wall of the first mounting groove, a first positioning block is fixedly provided on the fixing block, the first positioning block is slidably provided inside the first positioning groove, and a first spring is fixedly provided between the inner wall of the first positioning groove and the first positioning block.

[0008] The present invention is further configured such that: a threaded rod is rotatably provided on the cover plate, one end of the threaded rod extends into the interior of the sliding groove and is threadedly connected to the sliding block, and the other end of the threaded rod extends to the outside of the cover plate and is fixedly provided with a rotating block.

[0009] By adopting the above technical solution, the rotating block drives the threaded rod to rotate. Under the action of the threaded structure, the threaded rod drives the sliding block to slide in the sliding groove, so that the sliding block drives the first push rod to slide in the sliding channel towards the first mounting groove. When the first push rod abuts against the fixed block, the fixed block slides in the first mounting groove towards the fixed groove under the action of abutment. At the same time, the fixed block drives the first positioning block to slide in the first positioning groove. During the sliding process, the first positioning block compresses the first spring, completing the insertion of the fixed block into the fixed groove, thereby completing the radial connection between the locking block and the connecting block.

[0010] The present invention is further configured such that: a connecting plate is fixedly provided on the sliding block, one end of the connecting plate away from the sliding block extends into the interior of the valve cover, a second push rod is fixedly provided on the side of the connecting plate facing the cover plate, a second mounting groove is provided on the cover plate, a limit block is slidably provided inside the second mounting groove, one end of the second push rod away from the connecting plate can extend into the interior of the second mounting groove and abut against the limit block, a limit groove is provided on the valve cover, one end of the limit block can extend to the outside of the cover plate and slidably abut against the limit groove.

[0011] The present invention is further configured such that: a second positioning groove is provided on the inner wall of the second mounting groove, a second positioning block is fixedly provided on the limiting block, the second positioning block is slidably provided inside the second positioning groove, and a second spring is fixedly provided between the inner wall of the second positioning groove and the second positioning block.

[0012] By adopting the above technical solution, when the sliding block drives the first push rod to move towards the fixed block, the sliding block simultaneously drives the connecting plate to move, causing the connecting plate to drive the second push rod to move away from the cover plate in the second mounting groove, causing the second push rod to separate from the second mounting groove. Then, the second spring resets and pushes the second positioning block to slide in the second positioning groove, causing the second positioning block to drive the limiting block to move away from the limiting groove inside the second mounting groove, completing the separation of the limiting block and the limiting groove, thereby eliminating the radial limiting of the cover plate and the valve cover.

[0013] The present invention is further configured such that: a lever is fixedly provided at the end of the cover plate away from the valve body, a guide rod is fixedly provided on the lever, a protrusion is fixedly provided on the valve cover, and the guide rod can abut against the protrusion.

[0014] The beneficial effect of this utility model is that a handle is fixedly provided at the end of the cover plate away from the valve body.

[0015] The beneficial effects of this utility model are as follows: The rotating cover plate drives the rotating shaft to rotate, and the rotating shaft drives the valve core to rotate under the cooperation of the locking block and the locking groove. The valve core connects the conveying channel to realize the conveying of liquid. When the valve core needs to be replaced, the fixing block is inserted into the fixing groove by pushing the structure, which completes the radial connection between the locking block and the connecting block. At this time, the cover plate is pulled to drive the rotating shaft to move. Under the action of the locking block and the connecting block, the rotating shaft drives the valve core to move away from the valve body, so that the valve core can be removed. By removing the valve core, it is convenient to replace or maintain the valve core, avoiding the device from not working properly due to valve core failure, and effectively extending the overall service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the rotating shaft of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6 This utility model Figure 4 Enlarged diagram of point B in the middle.

[0022] In the diagram: 1. Valve body; 2. Conveying channel; 3. Valve core; 4. Valve cover; 5. Rotating shaft; 6. Locking block; 7. Connecting block; 8. Locking groove; 9. Fixing block; 10. Fixing groove; 99. Cover plate; 11. First mounting groove; 12. Sliding groove; 13. Sliding channel; 14. Sliding block; 15. First push rod; 21. First positioning groove; 22. First positioning block; 23. First spring; 31. Threaded rod; 32. Rotating block; 41. Connecting plate; 42. Second push rod; 43. Second mounting groove; 44. Limiting block; 45. Limiting groove; 51. Second positioning groove; 52. Second positioning block; 53. Second spring; 61. Toggle lever; 62. Guide rod; 63. Protrusion; 71. Handle. Detailed Implementation

[0023] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0024] like Figures 1 to 3 As shown, a double plug valve includes a valve body 1 with a delivery channel 2 inside. The two ends of the delivery channel 2 are connected to an external output pipe and a delivery pipe, respectively, to deliver liquid. A valve core 3 is installed on the inner wall of the delivery channel 2, which is used to cut off the connection between the output pipe and the delivery pipe. A valve cover 4 is fixedly installed on the valve body 1, and a rotating shaft 5 is installed inside the valve cover 4. A locking block 6 is fixedly installed at the end of the rotating shaft 5 facing the valve body 1, and a connecting block 7 is fixedly installed at the end of the valve core 3 facing the rotating shaft 5. The connecting block 7 has a slot 8, and the locking block 6 can be inserted into the slot 8. Through the insertion of the locking block 6 into the slot 8, the axial connection between the rotating shaft 5 and the valve core 3 can be completed. A fixing block 9 is provided on one side of the rotating shaft 5, and a fixing groove 10 is provided on the connecting block 7. The rotating shaft 5 is provided with a pushing structure for pushing the fixing block 9 into the fixing groove 10. Through the insertion of the fixing block 9 into the fixing groove 10, the radial connection between the locking block 6 and the connecting block 7 can be completed. A cover plate 99 is fixedly provided at the end of the rotating shaft 5 away from the valve core 3.

[0025] like Figure 4 and Figure 6As shown, the pushing structure includes a first mounting groove 11, a sliding groove 12, a sliding channel 13, a sliding block 14, and a first push rod 15. The first mounting groove 11 is horizontally opened on the locking block 6. The fixing block 9 is slidably disposed inside the first mounting groove 11 and slides along the opening direction of the first mounting groove 11. The sliding groove 12 is vertically opened on the rotating shaft 5. The rotating shaft 5 also has a sliding channel 13. There are four sliding channels 13, which are arranged circumferentially along the circumference of the rotating shaft 5. The opening direction of the sliding channels 13 and the sliding groove 12 is the same. One end of the sliding channel 13 is connected to the sliding groove 12. The other end of the moving channel 13 extends into the interior of the locking block 6 and communicates with the first mounting groove 11. The end of the fixing block 9 away from the fixing groove 10 can extend into the interior of the sliding channel 13 and abut against the first push rod 15. The end of the fixing block 9 located inside the sliding channel 13 has a first inclined surface. The first inclined surface is located on the side of the fixing block 9 facing the sliding groove 12. The sliding block 14 is slidably disposed on the inner wall of the sliding groove 12. The first push rod 15 is fixedly disposed on the sliding block 14. One end of the rotating shaft 5 extends into the interior of the sliding channel 13 and can abut against the fixing block 9. The first push rod 15 and the fixing block 9 are respectively aligned with the sliding channel 13.

[0026] like Figure 6 As shown, a first positioning groove 21 is provided on the inner wall of the first mounting groove 11. The first positioning groove 21 and the first mounting groove 11 are opened in the same direction. A first positioning block 22 is fixedly provided on the fixing block 9. The first positioning block 22 and the fixing block 9 move synchronously. The first positioning block 22 is slidably provided inside the first positioning groove 21. A first spring 23 is fixedly provided between the inner wall of the first positioning groove 21 and the first positioning block 22. The first spring 23 is in a tensioned state when it is not under force.

[0027] like Figure 4 and Figure 5 As shown, a threaded rod 31 is rotatably mounted on the cover plate 99. One end of the threaded rod 31 extends into the interior of the sliding groove 12 and is threadedly connected to the sliding block 14. The other end of the threaded rod 31 extends to the outside of the cover plate 99 and is fixedly mounted on a rotating block 32. A connecting plate 41 is horizontally fixedly mounted on the sliding block 14. The end of the connecting plate 41 away from the sliding block 14 extends into the interior of the valve cover 4. A second push rod 42 is fixedly mounted on the side of the connecting plate 41 facing the cover plate 99. A second mounting groove 43 is horizontally opened on the cover plate 99. A limit block 44 is slidably mounted inside the second mounting groove 43. The end of the second push rod 42 away from the connecting plate 41 can extend into the interior of the second mounting groove 43 and abut against the limit block 44. A second inclined surface is opened on the side of the limit block 44 facing the rotating shaft 5. A limit groove 45 is opened on the valve cover 4. The limit groove 45 is circular. One end of the limit block 44 can extend to the outside of the cover plate 99 and slide against the limit groove 45.

[0028] like Figure 5As shown, a second positioning groove 51 is provided on the inner wall of the second mounting groove 43. The opening direction of the second positioning groove 51 is the same as that of the second mounting groove 43. A second positioning block 52 is fixedly provided on the limiting block 44. The second positioning block 52 is slidably provided inside the second positioning groove 51. A second spring 53 is fixedly provided between the inner wall of the second positioning groove 51 and the second positioning block 52. The second spring 53 is in a tensioned state when it is not under force.

[0029] like Figure 1 As shown, a lever 61 is fixedly installed at the end of the cover plate 99 away from the valve body 1, and a guide rod 62 is fixedly installed on the lever 61. A protrusion 63 is fixedly installed on the valve cover 4, and the guide rod 62 can abut against the protrusion 63. A handle 71 is fixedly installed at the end of the cover plate 99 away from the valve body 1. There are two protrusions 63, and the angle between the two protrusions 63 is ninety degrees. Through the ninety-degree design, it is ensured that each time the cover plate 99 is rotated, the valve core 3 is rotated to the position of connecting or disconnecting the conveying channel 2.

[0030] The rotating cover plate 99 drives the rotating shaft 5 to rotate. When the cover plate 99 rotates, it simultaneously drives the limiting block 44 to slide in the limiting groove 45. The limiting block 44 and the limiting groove 45 cooperate to limit the radial movement of the cover plate 99. At this time, the rotating shaft 5 drives the valve core 3 to rotate under the cooperation of the locking block 6 and the locking groove 8. The valve core 3 connects the conveying channel 2 to realize the conveying of liquid. When the valve core 3 needs to be replaced, the fixing block 9 is inserted into the fixing groove 10 by pushing the structure, which completes the radial connection between the locking block 6 and the connecting block 7. At this time, the cover plate 99 is pulled to drive the rotating shaft 5 to move. Under the action of the locking block 6 and the connecting block 7, the rotating shaft 5 drives the valve core 3 to move away from the valve body 1, so that the valve core 3 can be removed. By removing the valve core 3, it is convenient to replace or maintain the valve core 3, avoiding the device from not working properly due to the failure of the valve core 3, and effectively extending the overall service life of the equipment.

[0031] The rotating block 32 drives the threaded rod 31 to rotate. Under the action of the threaded structure, the threaded rod 31 drives the sliding block 14 to slide in the sliding groove 12. The sliding block 14 drives the first push rod 15 to slide in the sliding channel 13 towards the first mounting groove 11. When the first push rod 15 abuts against the fixed block 9, the fixed block 9 slides in the first mounting groove 11 towards the fixed groove 10 under the action of the first inclined surface and the first push rod 15. At the same time, the fixed block 9 drives the first positioning block 22 to slide in the first positioning groove 21. During the sliding process, the first positioning block 22 compresses the first spring 23 to complete the insertion of the fixed block 9 into the fixed groove 10, thereby completing the radial connection between the locking block 6 and the connecting block 7.

[0032] When the sliding block 14 drives the first push rod 15 to move toward the fixed block 9, the sliding block 14 simultaneously drives the connecting plate 41 to move, causing the connecting plate 41 to drive the second push rod 42 to move away from the cover plate 99 in the second mounting groove 43, causing the second push rod 42 to separate from the second mounting groove 43. Then, the second spring 53 resets and pushes the second positioning block 52 to slide in the second positioning groove 51, causing the second positioning block 52 to drive the limiting block 44 to move away from the limiting groove 45 in the second mounting groove 43, completing the separation of the limiting block 44 and the limiting groove 45, thereby canceling the radial limiting of the cover plate 99 and the valve cover 4.

[0033] When installing the valve core 3, the cover plate 99 is pushed to move the rotating shaft 5, which in turn moves the locking block 6. With the cooperation of the fixing block 9 and the fixing groove 10, the rotating shaft 5 synchronously moves the valve core 3 into the conveying channel 2 inside the valve body 1. When the valve core 3 abuts against the conveying channel 2, the rotating block 32 rotates the threaded rod 31. The threaded rod 31, under the action of the threaded structure, drives the sliding block 14 to slide in the sliding groove 12, causing the sliding block 14 to drive the first push rod 15 to slide away from the first mounting groove 11 in the sliding channel 13. This causes the first push rod 15 to disengage from the fixing block 9. At this time, the first spring 23 resets and pushes the first positioning block 22 to move in the first positioning groove 21. Simultaneously, the first positioning block 22 drives the fixing block 9 to move away from the fixing groove 10 in the first mounting groove 11. When the fixed block 9 separates from the fixed groove 10, and the sliding block 14 drives the first push rod 15 to move towards the fixed block 9, the sliding block 14 simultaneously drives the connecting plate 41 to move, causing the connecting plate 41 to drive the second push rod 42 to move towards the second mounting groove 43. The second push rod 42 moves into the second mounting groove 43. When the second push rod 42 abuts against the limiting block 44, the limiting block 44 moves towards the limiting groove 45 in the second mounting groove 43 under the action of the second inclined surface and the second push rod 42. At the same time, the limiting block 44 drives the second positioning block 52 to slide inside the second positioning groove 51. During the sliding process, the second positioning block 52 compresses the second spring 53, completing the insertion of the limiting block 44 and the limiting groove 45, thereby completing the radial limiting of the cover plate 99 and the valve cover 4, and thus completing the installation of the valve core 3.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double plug valve characterized by: The device includes a valve body (1), a conveying channel (2) inside the valve body (1), a valve core (3) on the inner wall of the conveying channel (2), a valve cover (4) fixedly connected to the valve body (1), a rotating shaft (5) inside the valve cover (4), a locking block (6) fixedly provided at one end of the rotating shaft (5) facing the valve body (1), a connecting block (7) fixedly provided at one end of the valve core (3) facing the rotating shaft (5), a slot (8) provided on the connecting block (7), the locking block (6) being able to be inserted into the slot (8), a fixing block (9) provided on one side of the rotating shaft (5), a fixing groove (10) provided on the connecting block (7), a pushing structure for pushing the fixing block (9) to be inserted into the fixing groove (10) provided on the rotating shaft (5), and a cover plate (99) fixedly provided at one end of the rotating shaft (5) away from the valve core (3).

2. A dual plug valve according to claim 1, wherein: The pushing structure includes a first mounting groove (11), a sliding groove (12), a sliding channel (13), a sliding block (14), and a first push rod (15). The first mounting groove (11) is formed on the locking block (6). The fixing block (9) is slidably disposed inside the first mounting groove (11). The sliding groove (12) is formed on the rotating shaft (5). The rotating shaft (5) also has a sliding channel (13). One end of the sliding channel (13) communicates with the sliding groove (12). The other end of the channel (13) extends into the interior of the locking block (6) and communicates with the first mounting groove (11). The end of the fixing block (9) away from the fixing groove (10) can extend into the interior of the sliding channel (13) and abut against the first push rod (15). The sliding block (14) is slidably disposed on the inner wall of the sliding groove (12). The first push rod (15) is fixedly disposed on the sliding block (14). One end of the rotating shaft (5) extends into the interior of the sliding channel (13) and can abut against the fixing block (9).

3. A dual plug valve according to claim 2, wherein: The inner wall of the first mounting groove (11) is provided with a first positioning groove (21), and a first positioning block (22) is fixedly provided on the fixing block (9). The first positioning block (22) is slidably provided inside the first positioning groove (21), and a first spring (23) is fixedly provided between the inner wall of the first positioning groove (21) and the first positioning block (22).

4. A dual plug valve according to claim 2, wherein: A threaded rod (31) is rotatably provided on the cover plate (99). One end of the threaded rod (31) extends into the interior of the sliding groove (12) and is threadedly connected to the sliding block (14). The other end of the threaded rod (31) extends to the outside of the cover plate (99) and is fixedly provided with a rotating block (32).

5. A dual plug valve according to claim 2, wherein: A connecting plate (41) is fixedly provided on the sliding block (14). One end of the connecting plate (41) away from the sliding block (14) extends into the interior of the valve cover (4). A second push rod (42) is fixedly provided on the side of the connecting plate (41) facing the cover plate (99). A second mounting groove (43) is provided on the cover plate (99). A limit block (44) is slidably provided inside the second mounting groove (43). One end of the second push rod (42) away from the connecting plate (41) can extend into the interior of the second mounting groove (43) and abut against the limit block (44). A limit groove (45) is provided on the valve cover (4). One end of the limit block (44) can extend to the outside of the cover plate (99) and slide against the limit groove (45).

6. A dual plug valve according to claim 5 wherein: The inner wall of the second mounting groove (43) is provided with a second positioning groove (51), and a second positioning block (52) is fixedly provided on the limiting block (44). The second positioning block (52) is slidably provided inside the second positioning groove (51), and a second spring (53) is fixedly provided between the inner wall of the second positioning groove (51) and the second positioning block (52).

7. A dual plug valve according to claim 1, wherein: A lever (61) is fixedly provided at one end of the cover plate (99) away from the valve body (1). A guide rod (62) is fixedly provided on the lever (61). A protrusion (63) is fixedly provided on the valve cover (4). The guide rod (62) can abut against the protrusion (63).

8. A dual plug valve according to claim 1, wherein: A handle (71) is fixedly provided at the end of the cover plate (99) away from the valve body (1).

Images