Leak-proof straight tube regulating ball valve

Abstract

This utility model relates to the field of ball valve technology, specifically a leak-proof straight pipe regulating ball valve, including a valve body and a feeding mechanism. Connectors are provided at both ends of the valve body, and a sealing plate is provided between the connector and the valve body. The feeding mechanism includes an insertion cylinder mounted on the sealing plate, a push plate slidably connected to the insertion cylinder, a disc mounted on the push plate, a connecting rod mounted on the disc, and a fixing assembly mounted on the insertion cylinder. The fixing assembly includes two fixing plates mounted on the insertion cylinder, a frame mounted on the fixing plates, a rod slidably connected to the frame and inserted into the insertion cylinder at one end, a convex ring coaxially mounted on the rod, springs at both ends respectively mounted on the convex ring and the frame, and a pin penetrating the frame and the rod. This utility model eliminates the threaded structure design inside the insertion cylinder, which not only scrapes off the descaling agent on the inner wall of the insertion cylinder but also ensures the stability and ease of use of the insertion cylinder sealing structure.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a leak-proof straight pipe regulating ball valve. Background Technology

[0002] As a key pipeline control element, the ball valve's core motion mechanism is as follows: through the torque transmission of the external valve stem, the spherical valve core is driven to rotate 0-90° along the valve's central axis, achieving full-bore flow opening or complete shut-off of fluid. The straight-pipe regulating ball valve combines regulating function with leak-proof design, primarily used in industrial applications requiring precise flow control and high sealing performance.

[0003] Chinese Patent CN213655795U discloses a leak-proof straight pipe regulating ball valve, including a valve body with connectors at both ends. A sealing plate is fixedly installed at the connection between the connector and the valve body. An insertion cylinder is fixedly inserted into the upper end face of the sealing plate. An insertion rod is provided inside the insertion cylinder. A soft disk is fixedly sleeved on the outer surface of the insertion rod. The edge of the soft disk is movably fitted with the inner wall of the insertion cylinder. A sealing head structure is provided at the upper end of the insertion rod and movably connected to the upper end of the insertion cylinder. A valve core structure is provided inside the valve body. The valve core structure extends upward and is sequentially connected to a connecting block and a threaded rod. A limit nut is threadedly fitted on the outer surface of the threaded rod. A rotating handle is sleeved on the outer side of the threaded rod near the lower part of the limit nut. This ball valve facilitates cleaning and maintenance by adding descaling agent and effectively prevents accidental activation to control the valve core structure.

[0004] However, the above technical solution has the following shortcomings: Although the ball valve is easy to clean and maintain by adding descaling agent, the connection between the top of the insertion cylinder and the threaded column is a spiral engagement connection. When the descaling agent is added to the insertion cylinder, some of the descaling agent will adhere to the thread groove. It is difficult to completely remove the descaling agent by the sliding wiping action of the soft cap alone, which requires additional cleaning operations and reduces the convenience of operation. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a leak-proof straight pipe regulating ball valve. This eliminates the threaded structure design inside the insertion cylinder, which not only scrapes off the descaling agent on the inner wall of the insertion cylinder but also ensures the stability and ease of use of the insertion cylinder sealing structure.

[0006] The technical solution of this utility model is a leak-proof straight pipe regulating ball valve, including a valve body and a feeding mechanism; the valve body is provided with connectors at both ends, and a sealing plate is provided between the connectors and the valve body; the feeding mechanism includes an insertion cylinder provided on the sealing plate, a push plate slidably connected to the insertion cylinder, a disc provided on the push plate, a connecting rod provided on the disc, and a fixing component provided on the insertion cylinder; the fixing component includes two fixing plates provided on the insertion cylinder, a frame provided on the fixing plate, a rod slidably connected to the frame and inserted into the insertion cylinder at one end, a convex ring coaxially provided on the rod, springs at both ends respectively provided on the convex ring and the frame, and a pin penetrating the frame and the rod; the connecting rod is provided with a through hole for the rod to pass through, and a ball gripping device is provided at one end of the rod.

[0007] Preferably, a plurality of second screws arranged in a circular array are disposed through the disk, and the second screws are threadedly connected to the push plate.

[0008] Preferably, a sealing ring is provided on the outer cylindrical surface of the pusher plate.

[0009] Preferably, two first screws are provided through the fixing plate, and the first screws are threaded onto the frame.

[0010] Preferably, the convex ring is provided with two fixing rods, the fixing rods are provided with guide sliders, and the frame is provided with a groove for the guide sliders to slide.

[0011] Preferably, the convex ring and the frame are provided with telescopic sleeves, which are located on the outside of the spring.

[0012] Preferably, a top cover is provided at the end of the connecting rod away from the disc, and the top cover abuts against the insertion cylinder.

[0013] Preferably, the top cover is coaxially provided with a collar, and the insertion cylinder is provided with four positioning blocks arranged in an arc-shaped array, the positioning blocks being embedded inside the collar.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] This invention features a feeding mechanism that facilitates the delivery of descaling agent from the sealing plate into the inner wall of the valve body for cleaning. This eliminates the need for threaded fasteners and specialized installation and disassembly equipment to seal the insertion cylinder, avoiding the corrosion caused by descaling agent residue in the thread grooves. Furthermore, the fixed components ensure the stability of the connecting rod, thereby guaranteeing the sealing stability of the feeding mechanism. The invention is simple and convenient to operate and has excellent practicality. Attached Figure Description

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

[0017] Figure 2 This is a partial cross-sectional schematic diagram of the sealing plate of this utility model;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram showing the separation state of the insertion tube and the top cover of this utility model.

[0021] Reference numerals: 1. Valve body; 2. Connector; 3. Sealing plate; 4. Insertion cylinder; 5. Connecting rod; 6. Fixing plate; 7. Frame; 8. First screw; 9. Insertion rod; 10. Protruding ring; 11. Spring; 12. Grip ball; 13. Fixing rod; 14. Guide slider; 15. Telescopic soft sleeve; 16. Pin; 17. Top cover; 18. Disc; 19. Push plate; 20. Sealing ring; 21. Second screw; 22. Collar; 23. Positioning block. Detailed Implementation

[0022] Example 1

[0023] like Figure 1 - Figure 5 As shown in the figure, the anti-leakage straight pipe regulating ball valve proposed in this embodiment includes a valve body 1 and a feeding mechanism; the valve body 1 is provided with connectors 2 at both ends, and a sealing plate 3 is provided between the connectors 2 and the valve body 1; the feeding mechanism includes an insertion cylinder 4 provided on the sealing plate 3, a push plate 19 slidably connected to the insertion cylinder 4, a disc 18 provided on the push plate 19, a connecting rod 5 provided on the disc 18, and a fixing component provided on the insertion cylinder 4; a sealing ring 20 is provided on the outer cylindrical surface of the push plate 19, and a top cover 17 is provided at the end of the connecting rod 5 away from the disc 18, and the top cover 17 abuts against the insertion cylinder 4.

[0024] The fixing assembly includes two fixing plates 6 mounted on the insertion cylinder 4, a frame 7 mounted on the fixing plates 6, an insertion rod 9 slidably connected to the frame 7 and inserted into the insertion cylinder 4 at one end, a convex ring 10 coaxially mounted on the insertion rod 9, a spring 11 with its two ends respectively mounted on the convex ring 10 and the frame 7, and a pin 16 penetrating the frame 7 and the insertion rod 9; the connecting rod 5 is provided with a through hole for the insertion rod 9 to pass through, one end of the insertion rod 9 is provided with a ball grip 12, the convex ring 10 is provided with two fixing rods 13, the fixing rods 13 are provided with guide sliders 14, and the frame 7 is provided with a groove for the guide sliders 14 to slide.

[0025] The protruding ring 10 and the frame 7 are provided with telescopic soft sleeves 15, which are located on the outside of the spring 11. The telescopic soft sleeves 15 are used to extend the service life of the spring 11.

[0026] In this embodiment, when descaling agent needs to be added to valve body 1, first open the insertion cylinder 4, then pour the descaling agent into the valve body 1 through the insertion cylinder 4 simultaneously. Then, pull the insertion rod 9 outward by the ball 12, so that the convex ring 10 and frame 7 compress the spring 11. Then, insert the connecting rod 5 and the push plate 19 into the insertion cylinder 4 through the top cover 17, and let the push plate 19 slide along the inner wall of the insertion cylinder 4. The sealing ring 20 scrapes off the descaling agent adhering to the inner wall until the top cover 17 abuts against the insertion cylinder 4. Then, release the ball 12. Under the elastic force of the spring 11, the insertion rod 9 slides until it penetrates the through hole of the connecting rod 5. The pin 16 is inserted through the rod 9. During this process, the fixing rod 13 and the guide slider 14 play a guiding and limiting role, which not only ensures the linear stability of the rod 9 when it moves, but also positions the insertion of the pin 16. When the guide slider 14 abuts against the groove, the pin 16 can be inserted to further ensure the stability of the rod 9. The spring 11 should be selected with a larger wire diameter to ensure the stability of the structure. This achieves the fixation of the connecting rod 5. The operation is simple and convenient, without the need for threaded fasteners and special installation and disassembly equipment. At the same time, it avoids the disadvantage of descaling agent residue in the thread groove causing corrosion. It has good practicality.

[0027] Example 2

[0028] like Figure 3 and Figure 4 As shown, in this embodiment, a leak-proof straight pipe regulating ball valve is proposed. Compared with the first embodiment, in this embodiment, a plurality of second screws 21 arranged in a ring array are provided through the disc 18, and the second screws 21 are threadedly connected to the push plate 19.

[0029] Two first screws 8 are threaded through the fixed plate 6 and are connected to the frame 7.

[0030] In this embodiment, the first screw 8 is used to fix the frame 7 to the fixing plate 6 so as to disassemble and install the fixing components, and the second screw 21 is used to fix the push plate 19 so as to replace the push plate 19 and the sealing ring 20 to ensure sealing performance.

[0031] Example 3

[0032] like Figure 5 As shown, in this embodiment, a leak-proof straight pipe regulating ball valve is proposed. Compared with the first embodiment, in this embodiment, the top cover 17 is coaxially provided with a collar 22, and the insertion cylinder 4 is provided with four positioning blocks 23 arranged in an arc array. The positioning blocks 23 are embedded inside the collar 22.

[0033] In this embodiment, when the push plate 19 is reinserted into the insertion cylinder 4 for sealing, the top cover 17 abuts against the port of the insertion cylinder 4. Before abutting, the angle of the connecting rod 5 needs to be finely adjusted according to the guide groove on the collar 22 and the positioning block 23, so that the positioning block 23 is embedded in the collar 22, thereby ensuring that the insertion rod 9 can accurately penetrate the connecting rod 5.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A leak-proof straight pipe regulating ball valve, characterized in that, include: A valve body (1) is provided with connectors (2) at both ends, and a sealing plate (3) is provided between the connectors (2) and the valve body (1); The feeding mechanism includes an insertion cylinder (4) mounted on a sealing plate (3), a push plate (19) slidably connected to the insertion cylinder (4), a disc (18) mounted on the push plate (19), a connecting rod (5) mounted on the disc (18), and a fixing assembly mounted on the insertion cylinder (4). The fixing assembly includes two fixing plates (6) mounted on the insertion cylinder (4), a frame (7) mounted on the fixing plate (6), an insertion rod (9) slidably connected to the frame (7) and inserted into the insertion cylinder (4) at one end, a convex ring (10) coaxially mounted on the insertion rod (9), a spring (11) mounted on the convex ring (10) and the frame (7) at both ends respectively, and a pin (16) penetrating the frame (7) and the insertion rod (9). The connecting rod (5) is provided with a through hole for the insertion rod (9) to pass through, and a ball gripper (12) is provided at one end of the insertion rod (9).

2. The anti-leakage straight pipe regulating ball valve according to claim 1, characterized in that, Multiple second screws (21) arranged in a ring array are provided on the disc (18), and the second screws (21) are threaded onto the push plate (19).

3. The anti-leakage straight pipe regulating ball valve according to claim 1, characterized in that, A sealing ring (20) is provided on the outer cylindrical surface of the push plate (19).

4. The anti-leakage straight pipe regulating ball valve according to claim 1, characterized in that, Two first screws (8) are provided through the fixing plate (6), and the first screws (8) are threaded onto the frame (7).

5. A leak-proof straight pipe regulating ball valve according to claim 1, characterized in that, Two fixing rods (13) are provided on the convex ring (10), and a guide slider (14) is provided on the fixing rod (13). A groove for the guide slider (14) to slide is provided on the frame (7).

6. A leak-proof straight pipe regulating ball valve according to claim 1, characterized in that, The protruding ring (10) and the frame (7) are provided with telescopic soft sleeves (15), which are located on the outside of the spring (11).

7. A leak-proof straight pipe regulating ball valve according to claim 1, characterized in that, A top cover (17) is provided at the end of the connecting rod (5) away from the disc (18), and the top cover (17) abuts against the insertion tube (4).

8. A leak-proof straight pipe regulating ball valve according to claim 7, characterized in that, The top cover (17) is coaxially provided with a collar (22), and the insertion cylinder (4) is provided with four positioning blocks (23) arranged in an arc array. The positioning blocks (23) are embedded inside the collar (22).

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