Valve element quick-changing structure of self-control ball valve
By setting rectangular grooves and rectangular inserts on the valve core of the self-controlled ball valve, and combining the limit ring and studs of the safety component, the rapid replacement of the valve core of the self-controlled ball valve is achieved, solving the leakage problem caused by friction and wear, and extending the equipment lifespan and reduce maintenance costs.
Patent Information
- Application Number
- CN202421120325.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-22
AI Technical Summary
During the opening and closing operation, existing self-controlled ball valves are prone to friction and wear between the valve core and the inner wall of the valve seat, resulting in leakage problems, and the valve core cannot be replaced quickly, resulting in unusable equipment and increasing economic losses.
A quick change structure of the valve core of the self-controlled ball valve is designed. By setting a rectangular groove on the valve core and fitting it with the rectangular insert block, it combines the limit ring and stud of the safety component to realize the rapid removal and replacement of the valve core. .
It realizes rapid replacement of valve cores, avoids leakage problems caused by wear, extends the service life of the equipment, and reduces maintenance costs.
Smart Images
Figure CN222526927U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automatic control ball valves, in particular to a valve core quick-change structure of an automatic control ball valve. Background Art
[0002] The self-controlled ball valve is a ball valve with automatic control function. The self-controlled ball valve is usually composed of a valve seat, a valve handle, a control mechanism, a valve core and other components. The valve core is installed in the valve seat. The valve core of the ball valve is spherical. As the valve handle rotates, the valve core rotates to complete the control opening and closing operation. There are many types of self-controlled ball valves on the market, and most of them have the advantages of corrosion resistance and long service life.
[0003] Since the valve handle is rotated to drive the valve core to rotate each time the self-control ball valve is opened and closed, the valve core is prone to friction with the inner wall of the valve seat. Long-term friction will cause wear, causing leakage in the valve core, making it difficult to achieve a good sealing effect. In addition, since the traditional valve core is fixed on the valve handle, and the valve handle is threadedly connected to the corresponding valve handle sleeve, the valve handle cannot be disassembled and removed, resulting in the valve core cannot be removed for replacement, and the valve core cannot be replaced quickly. The failure to replace will cause the entire self-control ball valve to be unusable. Due to the high cost of the self-control ball valve, the damaged self-control ball valve cannot be repaired and the overall disposal will cause economic losses and inconvenience to the user. In view of this, we propose a valve core quick-change structure for the self-control ball valve. Utility Model Content
[0004] The utility model aims to provide a valve core quick-change structure of an automatic ball valve to solve the defects mentioned in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The valve core quick-change structure of the automatic control ball valve includes a rear valve seat and a front valve seat fixedly installed on the front side of the rear valve seat by multiple fastening bolts, a valve stem sleeve arranged vertically is fixedly installed on the top surface of the rear valve seat, a valve core is arranged in the rear valve seat, a rectangular groove is arranged on the top of the valve core, a valve stem is threadedly connected to the inner thread of the valve stem sleeve, a rectangular plug is fixedly installed on the bottom end of the valve stem, the rectangular plug is located in the rectangular groove and plug-fitted with the rectangular groove, and the size of the rectangular plug is adapted to the size of the rectangular groove.
[0007] Preferably, the cross-sections of the rectangular groove and the rectangular plug-in block are both regular quadrilaterals, which are used for the smooth insertion operation of the rectangular plug-in block.
[0008] Preferably, a limit ring is fixedly installed on the valve stem, and a safety assembly is provided on the rear valve seat, the safety assembly includes a vertical plate fixedly installed in a vertical shape on the rear valve seat, a stud is threadedly connected to the vertical plate, a limit rod is fixedly installed on the front end of the stud, and the limit rod is abutted against the upper surface of the limit ring for limiting operation, so that the valve stem will not be screwed out too much and cause damage.
[0009] Preferably, a hexagonal protrusion is fixedly mounted on the rear end of the stud, and the hexagonal protrusion is used for cooperation with an external wrench.
[0010] Preferably, a washer is sleeved on the stud, and the hexagonal protrusion presses the washer against the side surface of the vertical plate. The washer can prevent the stud from loosening.
[0011] Preferably, the size of the valve core is matched with the size of the rear valve seat, so that the valve core can be removed from the front side of the rear valve seat.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The utility model provides a rectangular groove on the valve core, and the rectangular plug block is plugged into the rectangular groove, so that when in use, the front valve seat can be disassembled, the valve stem is twisted until the rectangular plug block is disengaged from the rectangular groove, and then the valve core is taken out for replacement. After replacement, it is ensured that the rectangular plug block can be inserted into the rectangular groove to complete the valve core quick-change structure, thereby achieving the effect of facilitating rapid replacement of the valve core.
[0014] 2. The utility model provides a safety assembly, which can limit the valve stem by using the limit rod to press against the top surface of the limit ring, thereby preventing the valve stem from being screwed out too long and affecting the subsequent normal use of the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is one of the explosion structure schematic diagrams of the utility model;
[0017] Figure 3 This is the second schematic diagram of the explosion structure of the utility model;
[0018] Figure 4 It is a partial structural schematic diagram of the utility model.
[0019] The meaning of each number in the figure is:
[0020] 1. Rear valve seat; 10. Front valve seat; 11. Valve stem sleeve; 12. Valve core; 121. Rectangular groove; 13. Valve stem; 14. Rectangular plug; 15. Limit ring;
[0021] 2. Safety assembly; 20. Vertical plate; 21. Stud; 22. Limit rod; 23. Washer; 24. Hexagonal protrusion. DETAILED DESCRIPTION
[0022] 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.
[0023] See also Figure 1-Figure 4 The utility model provides a technical solution: a valve core quick-change structure of an automatic ball valve, comprising a rear valve seat 1 and a front valve seat 10 fixedly mounted on the front side of the rear valve seat 1 by a plurality of fastening bolts, and the fastening bolts are used to fix the connection, so as to facilitate the disassembly operation between the rear valve seat 1 and the front valve seat 10;
[0024] Specifically, a vertically arranged valve stem sleeve 11 is fixedly installed on the top surface of the rear valve seat 1, a valve core 12 is arranged in the rear valve seat 1, a rectangular groove 121 is arranged on the top of the valve core 12, a valve stem 13 is threadedly connected to the valve stem sleeve 11, a rectangular plug-in block 14 is fixedly installed on the bottom end of the valve stem 13, the rectangular plug-in block 14 is located in the rectangular groove 121 and is plugged into the rectangular groove 121, the size of the rectangular plug-in block 14 is matched with the size of the rectangular groove 121, the cross-sections of the rectangular groove 121 and the rectangular plug-in block 14 are both regular quadrilaterals, which are used for the smooth insertion operation of the rectangular plug-in block 14. When in use, the valve stem 13 is twisted until the rectangular plug-in block 14 slides out of the rectangular groove 121. At this time, the valve core 12 can be taken out for replacement, so as to achieve the effect of facilitating the rapid replacement of the valve core 12.
[0025] In this embodiment, a limit ring 15 is fixedly installed on the valve stem 13, and a safety assembly 2 is provided on the rear valve seat 1. The safety assembly 2 includes a vertical plate 20 fixedly installed on the rear valve seat 1 in a vertical shape, and a stud 21 is threadedly connected to the vertical plate 20. A limit rod 22 is fixedly installed on the front end of the stud 21. The limit rod 22 is pressed against the upper surface of the limit ring 15 for limiting operation, so that the valve stem 13 will not be screwed out too much and cause damage.
[0026] Furthermore, a hexagonal protrusion 24 is fixedly mounted on the rear end of the stud 21, and the hexagonal protrusion 24 is used for cooperation with an external wrench.
[0027] In addition, a washer 23 is sleeved on the stud 21 , and the hexagonal protrusion 24 presses the washer 23 against the side surface of the vertical plate 20 . The washer 23 can prevent the stud 21 from loosening.
[0028] It is worth noting that the size of the valve core 12 is matched with the size of the rear valve seat 1 , so that the valve core 12 can be removed from the front side of the rear valve seat 1 .
[0029] When the valve core quick-change structure of the automatic ball valve of the utility model is used, the fastening bolts on the rear valve seat 1 and the front valve seat 10 are unscrewed, and the disassembly operation between the valve seat 1 and the front valve seat 10 is completed, and then the valve stem 13 is rotated until the rectangular plug block 14 is disengaged from the rectangular groove 121. At this time, the rectangular plug block 14 no longer limits the valve core 12, and the valve core 12 can be taken out as a whole, and then a new valve core 12 can be replaced. At the same time, ensure that the new valve core 12 is put in the same direction as the original old valve core 12. Finally, rotate the valve stem 13 in the opposite direction. At this time, the rotation of the valve stem 13 can drive the rectangular plug 14 to continue to be inserted into the rectangular groove 121, completing the installation operation, and then continue to fix the rear valve seat 1 and the front valve seat 10 with fastening bolts. Finally, tighten the stud 21 and use the limit rod 22 to be inserted above the limit ring 15 to limit the outward screwing distance of the valve stem 13, so that the rectangular plug 14 will not fall off from the rectangular groove 121 due to the subsequent screwing of the valve stem 13.
[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A valve core quick-change structure for an automatic ball valve, comprising a rear valve seat (1) and a front valve seat (10) fixedly mounted on the front side of the rear valve seat (1) by a plurality of fastening bolts, characterized in that: A vertically arranged valve stem sleeve (11) is fixedly mounted on the top surface of the rear valve seat (1); a valve core (12) is arranged inside the rear valve seat (1); a rectangular groove (121) is arranged on the top of the valve core (12); a valve stem (13) is threadedly connected to the valve stem sleeve (11); a rectangular plug-in block (14) is fixedly mounted on the bottom end of the valve stem (13); the rectangular plug-in block (14) is located in the rectangular groove (121) and is plugged into and matched with the rectangular groove (121); the size of the rectangular plug-in block (14) is compatible with the size of the rectangular groove (121).
2. The valve core quick-change structure of the automatic ball valve according to claim 1 is characterized in that: The cross-sections of the rectangular groove (121) and the rectangular plug-in block (14) are both regular quadrilaterals, which are used for the smooth insertion operation of the rectangular plug-in block (14).
3. The valve core quick-change structure of the automatic ball valve according to claim 1 is characterized in that: A limit ring (15) is fixedly mounted on the valve stem (13), and a safety assembly (2) is provided on the rear valve seat (1). The safety assembly (2) comprises a vertical plate (20) fixedly mounted on the rear valve seat (1) in a vertical shape, and a stud (21) is threadedly connected to the vertical plate (20). A limit rod (22) is fixedly mounted on the front end of the stud (21), and the limit rod (22) is abutted against the upper surface of the limit ring (15) for limiting operation.
4. The valve core quick-change structure of the automatic ball valve according to claim 3 is characterized in that: A hexagonal protrusion (24) is fixedly mounted on the rear end of the stud (21), and the hexagonal protrusion (24) is used in conjunction with an external wrench.
5. The valve core quick-change structure of the automatic ball valve according to claim 4 is characterized in that: A washer (23) is sleeved on the stud (21), and the hexagonal protrusion (24) presses the washer (23) against the side surface of the vertical plate (20).
6. The valve core quick-change structure of the automatic ball valve according to claim 1 is characterized in that: The size of the valve core (12) is matched with the size of the rear valve seat (1), so that the valve core (12) can be removed from the front side of the rear valve seat (1).