Titanium alloy butterfly valve with high stability

Abstract

The utility model discloses a high-stability titanium alloy butterfly valve which comprises a valve body and a valve rod, a sealing gap is arranged between the valve body and the valve rod, a valve cover of the sealing gap is installed on the valve body, an installation rod is arranged in the sealing gap and surrounds the valve rod in the circumferential direction, a lower base plate is fixedly arranged at the bottom end of the installation rod, and the lower base plate is fixedly arranged on the valve rod. A plurality of sealing fillers are sleeved on the mounting rod, an extrusion block is arranged above the sealing fillers, a control structure for controlling the extrusion block to abut against the sealing fillers is arranged on the mounting rod, the butterfly valve is provided with the control structure, and the control structure can enable the lower chassis and the sealing fillers to enter and exit a sealing gap together. And the sealing filler can be conveniently and directly taken out of the sealing gap, subsequent sealing filler replacement is facilitated, and the complexity of taking out the sealing filler is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a titanium alloy butterfly valve with high stability. Background Technology

[0002] The sealing packing plays a crucial role in butterfly valves. As an important component of valve sealing, the sealing packing effectively fills the sealing gap between the valve stem and the valve body, preventing fluid leakage from the gap between the valve body and the valve stem, and ensuring the sealing effect of the medium.

[0003] Because existing sealing packings are prone to aging during long-term use, the aged sealing packings tend to become loose and stick together. Several sealing packings may stick together, making it difficult to remove them directly. The current method usually involves using pry bars that are suitable for inserting into the sealing gap to pry out the sealing packing bit by bit. This operation is particularly cumbersome, time-consuming, and laborious. In summary, a titanium alloy butterfly valve with high stability is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a highly stable titanium alloy butterfly valve. This valve can directly remove aged sealing packing from the sealing gap, facilitating subsequent replacement of the sealing packing and effectively avoiding the cumbersome process of removing the sealing packing.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a highly stable titanium alloy butterfly valve, comprising a valve body and a valve stem, with a sealing gap between the valve body and the valve stem, a valve cover for the sealing gap installed on the valve body, an installation rod located within the sealing gap and arranged circumferentially around the valve stem, a lower base plate fixedly installed at the bottom end of the installation rod, a plurality of sealing packings fitted on the installation rod, a pressing block provided above the sealing packings, and a control structure provided on the installation rod for controlling the pressing block to press against the sealing packings.

[0006] By adopting the above technical solution, the bottom end of the mounting rod is fixedly connected to the lower chassis. The lower chassis is used to stabilize the mounting rod and provide support, making it easy to pull out several sealing fillers in the sealing gap by pulling the mounting rod. The operation is simple. The control structure fixes several sealing fillers on the mounting rod, making them less likely to slip off, effectively maintaining the stability of use and preventing leakage.

[0007] The control structure is further configured such that: a threaded groove is provided along the length of the mounting rod, a screw is threadedly connected to the threaded groove, a through groove is provided along the length of the mounting rod to connect the threaded groove and the sealing gap, and a linkage structure is provided between the extrusion block and the screw, wherein the extrusion block is slidably disposed along the length of the through groove.

[0008] By adopting the above technical solution, the threaded groove is located on the mounting rod for installing the screw; the screw is connected to the threaded groove by threads and can rotate and move along the threaded groove; the through groove is used to connect the threaded groove and the sealing gap, so that the rotation and movement of the screw can be transmitted to the extrusion block, thereby compressing several sealing fillers, ensuring the sealing performance of the sealing gap, and effectively preventing fluid leakage.

[0009] The linkage structure is further configured such that a T-shaped linkage groove is circumferentially opened on the annular screw, one end of the extrusion block extends into the T-shaped linkage groove, and the other end of the extrusion block extends from the through groove to the sealing gap.

[0010] By adopting the above technical solution, the linkage structure includes a T-shaped linkage groove circumferentially opened on the screw and one end of the extrusion block extending into the T-shaped linkage groove. When the screw rotates, the T-shaped linkage groove will drive the extrusion block to slide along the length of the groove, thereby compressing the sealing filler. Its structure is simple and easy to manufacture.

[0011] A further configuration is provided: a knob is fixedly installed at the end of the screw that extends from the valve cover away from the lower chassis.

[0012] By adopting the above technical solution, the screw can be manually rotated using a knob. The knob is easy to operate and simple to use, thereby controlling the degree of compression of the sealing packing by the extrusion block. Attached Figure Description

[0013] Figure 1 This is a partial explosion diagram of this embodiment;

[0014] Figure 2 This is a partial cross-sectional view of this embodiment;

[0015] Figure 3 This is an example. Figure 2 Enlarged view at point A in the middle;

[0016] Figure 4 This is a perspective view of the overall structure of this embodiment;

[0017] In the diagram: 1. Valve body; 11. Valve stem; 12. Sealing gap; 2. Lower base plate; 14. Sealing packing; 13. Valve cover; 21. Mounting rod; 3. Extrusion block; 211. Threaded groove; 4. Screw; 212. Through groove; 213. T-type linkage groove; 41. Knob; 15. Butterfly plate; 16. Handle. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] refer to Figures 1 to 4A highly stable titanium alloy butterfly valve includes a valve body 1 and a valve stem 11. A butterfly plate 15 is fixedly installed at the bottom of the valve stem 11. The butterfly plate 15 is a disc-shaped component that rotates around the valve stem 11 within the valve body 1 to achieve the purpose of opening and closing or regulating the flow of the medium. A handle 16 is fixedly installed at the end of the valve stem 11 that extends outward. Rotating the handle 16 drives the butterfly plate 15 to rotate. There is a sealing gap 12 between the valve body 1 and the valve stem 11. A valve cover 13 with the sealing gap 12 is fixedly installed on the valve body 1 by bolts. Multiple mounting rods 21 are arranged circumferentially around the valve stem 11 within the sealing gap 12. A lower base plate 2 is fixedly installed at the bottom end of the mounting rod 21. Several sealing packings 14 are fitted on the mounting rod 21. The shape and size of the cross-section of the sealing packings 14 are adapted to the shape and size of the cross-section of the lower base plate 2. An extrusion block 3 is arranged above the sealing packings 14. A control structure is provided on the mounting rod 21 to control the extrusion block 3 to press against the sealing packings 14.

[0020] The control structure includes a threaded groove 211 along the length of the mounting rod 21, a screw 4 threadedly connected to the threaded groove 211, a through groove 212 along the length of the mounting rod 21 that connects the threaded groove 211 and the sealing gap 12, and a linkage structure between the extrusion block 3 and the screw 4. The extrusion block 3 is slidably arranged along the length of the through groove 212.

[0021] The linkage structure includes a screw 4 with a T-shaped linkage groove 213 circumferentially formed. One end of the extrusion block 3 extends into the T-shaped linkage groove 213, and the other end of the extrusion block 3 extends from the through groove 212 to the sealing gap 12. A knob 41 is fixedly installed on the end of the screw 4 away from the lower base plate 2, extending out from the valve cover 13.

[0022] Overall workflow: First, open the valve cover 13 and turn the knob 41 to make the extrusion block 3 move away from the sealing packing 14, releasing the compression of the sealing packing 14. Pull the mounting rod 21 upward, and the lower base plate 2 will take out several sealing packings 14 together. After the screw 4 is completely separated from the threaded groove 211, the sealing packing 14 is replaced. The new sealing packing 14 is fitted onto the mounting rod 21, and the screw 4 is screwed into the threaded groove 211 again, so that the extrusion block 3 is pressed against the sealing packing 14. Then, insert the lower base plate 2 into the bottom of the sealing gap 12.

[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A titanium alloy butterfly valve with high stability, comprising a valve body (1) and a valve stem (11), there is a sealing gap (12) between the valve body (1) and the valve stem (11), a valve cover (13) with a sealing gap (12) is installed on the valve body (1), characterized in that: The mounting rod (21) is provided in the sealing gap (12) and circumferentially around the valve rod (11), the bottom end of the mounting rod (21) is fixedly provided with a lower chassis (2), a plurality of sealing packing (14) are sleeved on the mounting rod (21), the upper part of the sealing packing (14) is provided with an extrusion block (3), and the mounting rod (21) is provided with a control structure for controlling the extrusion block (3) to abut against the sealing packing (14).

2. The titanium alloy butterfly valve according to claim 1, characterized by: The control structure comprises a threaded groove (211) opened along the length direction of the mounting rod (21), a screw rod (4) threadedly connected to the threaded groove (211), a through groove (212) opened along the length direction of the mounting rod (21) and communicating the threaded groove (211) with the sealing gap (12), and a linkage structure between the extrusion block (3) and the screw rod (4), and the extrusion block (3) is slidably arranged along the length direction of the through groove (212).

3. The titanium alloy butterfly valve according to claim 2, characterized by: The linkage structure comprises a T-shaped linkage groove (213) circumferentially opened around the screw rod (4), one end of the extrusion block (3) extends into the T-shaped linkage groove (213), and the other end of the extrusion block (3) extends from the through groove (212) to the sealing gap (12).

4. The titanium alloy butterfly valve according to claim 2, characterized by: The end of the screw rod (4) away from the lower chassis (2) extends out of the valve cover (13) and is fixedly provided with a rotary knob (41) outside.

Images