Tool for machining plug valve core shaft head
By designing a tooling for machining the valve core of a plug valve, and using components such as counterweights and locking clamps to adjust the center of gravity of the valve core, stable clamping and precise positioning of the valve core of the plug valve were achieved, solving the problem that it is impossible to directly turn the valve core in the existing technology and improving the machining accuracy.
Patent Information
- Application Number
- CN202423212635.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing technology cannot directly machine the shaft ends at both ends of the plug valve core, resulting in insufficient machining accuracy.
A tooling for machining the valve core shaft of a plug valve was designed. By setting counterweights and locking rings on the base, the center of gravity of the valve core is adjusted, and the locking rings are used to fix the valve core sealing surface, so as to achieve stable clamping and precise positioning of the valve core.
The machining accuracy of the valve core head of the plug valve has been improved, ensuring the stability and precision of the turning process.
Smart Images
Figure CN223557839U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of plug valve core processing, and particularly relates to a tool for plug valve core shaft head processing. BACKGROUND
[0002] The plug valve is a kind of rotary valve with fan-shaped closing parts, and the passage opening on the valve body is communicated or closed by rotating the fan-shaped valve core as a whole, to realize opening or closing. The valve core of the plug valve is composed of a plate-shaped fan-shaped sealing body and shaft heads located at both ends of the sealing body. The outer side of the fan-shaped sealing body is a sealing surface matched with the valve body, which is arc-shaped. The inner side of the fan-shaped sealing body is flat and plate-shaped. The fan-shaped sealing body is located at the eccentric position between the two shaft heads. Thus, the overall center of gravity of the valve core is located outside the central shaft, and the shaft heads at both ends of the valve core cannot be directly turned. SUMMARY
[0003] The utility model discloses a tool for plug valve core shaft head processing, which can change the overall center of gravity of the valve body by counterweight clamping of the plug valve core, facilitate turning of the shaft heads at both ends of the valve core, and ensure machining precision.
[0004] The utility model discloses a tool for plug valve core shaft head processing, which can change the overall center of gravity of the valve body by counterweight clamping of the plug valve core, facilitate turning of the shaft heads at both ends of the valve core, and ensure machining precision.
[0005] The tool for plug valve core shaft head processing comprises a base, a counterweight block, a pin rod, a support plate, a lock hoop, a pressing plate and a second screw rod. A pair of first pin holes are formed in the front-to-rear direction on the base. The bottom of the counterweight block is provided with a sliding rail. The counterweight block is installed in the counterweight groove of the base through the sliding rail at the bottom. A pair of second pin holes corresponding to the first pin holes are formed in the counterweight block. The pin rod passes through the first pin holes of the base and the second pin holes of the counterweight block in sequence, and the counterweight block is fixedly installed in the base. A pair of support plates are fixedly installed on the front and rear sides of the lower end face of the base. A pair of lock hoops are fixedly installed on the support plates through the through holes. A pair of pressing plates are fixedly installed on the lower end faces of the vertical seats at the front and rear ends of the base. A pair of second screw rods are threadedly connected with the base through the screw holes formed in the bottom surface of the base. Third nuts are fixedly installed on the second screw rods.
[0006] Preferably, the lock hoops are provided with first screw rods at the two ends. The two ends of the lock hoops are threadedly connected with the first nuts through the first screw rods and the through holes.
[0007] Preferably, the tail end of the pin rod is provided with threads, and the pin rod is sequentially threaded through a first pin hole on the base and a second pin hole on the counterweight and is threaded with a second nut.
[0008] Preferably, the pair of pressing plates are fixedly installed in an opposite inclined manner on the lower end face of the stand.
[0009] The beneficial effects achieved by the above technical solutions of the utility model are:
[0010] By setting the counterweight on the base, the center of gravity of the valve core is adjusted by the counterweight, which is beneficial to turning the shaft heads at both ends of the valve core. By setting the second screw rod and the locking hoop and other components, the locking hoop embraces the sealing surface of the sealing body on the valve core, thereby firmly fixing the tooling on the valve core of the plug valve, and under the joint action of the third nut and the first nut, the spacing between the counterweight and the sealing body can be adjusted, the center of gravity of the valve core is accurately controlled between the shaft heads at both ends, and the shaft heads of the valve core are more stable during machining, thereby improving machining precision. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 The valve core to be clamped in the utility model;
[0012] Figure 2 The structure schematic view of the utility model.
[0013] 1, base; 2, counterweight; 3, pin rod; 4, support plate; 5, locking hoop; 6, pressing plate; 7, second screw rod; 8, counterweight groove; 9, through hole; 10, stand; 11, third nut; 12, first screw rod; 13, first nut; 14, second nut; 15, slide rail; 16, sealing surface; 17, flat plate; 18, shaft head. DETAILED DESCRIPTION
[0014] By Figure 1 and Figure 2The faucet valve core shaft head processing tool is shown, including base 1, counterweight 2, pin rod 3, support plate 4, lock hoop 5, pressing plate 6 and second screw 7, the base 1 is provided with a pair of first pin holes in front and rear through type, the bottom of the counterweight 2 is provided with slide rail 15, the counterweight 2 is installed in the counterweight groove 8 of the base 1 through the slide rail 15 at the bottom, a pair of second pin holes are formed in the counterweight 2 corresponding to the pair of first pin holes, the tail end of the pin rod 3 is provided with a thread, the pin rod 3 passes through the first pin hole of the base 1 and the second pin hole of the counterweight 2 in sequence, and the counterweight 2 is fixedly installed in the base 1, the tail end of the pin rod 3 is screwed with the second nut 14, the counterweight 2 is locked in the base 1 by the pin rod 3, the need of clamping different size valve cores can be met by increasing or decreasing the counterweight 2, a pair of the support plate 4 is fixedly installed on the front and rear sides of the lower end surface of the base 1 respectively, a pair of through holes 9 are formed in the both sides of the support plate 4 respectively, the lock hoop 5 is U-shaped, a pair of the lock hoop 5 is provided with first screw 12 at both ends respectively, the both ends of the lock hoop 5 pass through the pair of through holes 9 and are screwed with the first nut 13 through the first screw 12, when the shaft head 18 at both ends of the valve core is processed, the sealing surface 16 outside the fan-shaped sealing body on the valve core is embraced by the lock hoop 5, and the tool is fixed on the valve core to be processed under the action of the first nut 13, the base 1 is fixedly installed with vertical seat 10 at both ends, a pair of the pressing plate 6 is fixedly installed on the lower end surface of the vertical seat 10 at both ends of the base 1 in opposite inclined manner, when the shaft head at both ends of the valve core is processed, the tool is abutted on the shaft shoulder through the vertical seat 10, and is limited left and right by the pair of pressing plate 6, a pair of the second screw 7 is screwed with the base 1 through the screw hole formed on the bottom surface of the base 1, the third nut 11 is fixedly installed on the second screw 7, the end of the second screw 7 is abutted on the flat plate 17 inside the fan-shaped sealing body on the valve core in use, the extension length of the second screw 7 can be adjusted by screwing the third nut 11, and the tool is fixed on the valve core under the joint action of the lock hoop 5. The distance between the counterweight 2 and the fan-shaped sealing body on the valve core can be adjusted by screwing the third nut 11 and the first nut 13, so that the purpose of adjusting the gravity center of the clamped valve core is achieved.
Claims
1. A tooling for machining the valve core head of a plug valve, characterized in that: The system includes a base (1), a counterweight (2), a pin (3), a support plate (4), a locking clamp (5), a pressure plate (6), and a second screw (7). The base (1) has a pair of first pin holes that run through the base from front to back. The bottom of the counterweight (2) is provided with a slide rail (15). The counterweight (2) is installed in a counterweight groove (8) on the base (1) via the slide rail (15). The counterweight (2) has a pair of second pin holes that correspond to the pair of first pin holes. The pin (3) passes through the first pin hole on the base (1) and the second pin hole on the counterweight (2) in sequence, fixing the counterweight (2) in the base (1). The support plate (4) is fixedly installed on the front and rear sides of the lower end of the base (1). The support plate (4) has a pair of through holes (9) on both sides. The locking clamp (5) is U-shaped. The pair of locking clamps (5) are fixedly installed on the support plate (4) through the through holes (9). The base (1) has a stand (10) fixedly installed at the front and rear ends. The pair of pressure plates (6) are fixedly installed on the lower end face of the stand (10) at the front and rear ends of the base (1). The pair of second screws (7) are threadedly connected to the base (1) through the screw holes opened on the bottom surface of the base (1). The second screw (7) is fixedly installed with a third nut (11).
2. The tooling for machining the valve core head of the plug valve according to claim 1, characterized in that: The locking clamp (5) is provided with a first screw (12) at both ends. The two ends of the locking clamp (5) are threadedly connected to the first nut (13) through the first screw (12) through the paired through holes (9).
3. The tooling for machining the valve core head of the plug valve according to claim 1, characterized in that: The tail end of the pin (3) is threaded, and the pin (3) passes through the first pin hole on the base (1) and the second pin hole on the counterweight (2) in sequence and is threaded to the second nut (14).
4. The tooling for machining the valve core head of the plug valve according to claim 1, characterized in that: The pair of pressure plates (6) are fixedly installed on the lower end face of the stand (10) in a relatively inclined manner.