Tool for processing sealing surface of valve core of plug valve

Abstract

The utility model discloses a tool for processing a sealing surface of a valve core of a plug valve, a base is provided with paired first pin holes which are in a front-back penetrating shape, the bottom of a balancing weight is provided with a sliding rail, the balancing weight is arranged in a row of balancing weight grooves formed in the base through the sliding rail, and the first pin holes are connected with the balancing weight through the sliding rail. A pair of first pin holes are formed in the base, a pair of second pin holes corresponding to the pair of first pin holes are formed in the balancing weight, the pin rod sequentially penetrates through the first pin holes in the base and the second pin holes in the balancing weight to be installed in the base, and vertical bases are fixedly installed at the front end and the rear end of the base respectively. The paired pressing plates are fixedly installed on the lower end faces of the vertical seats at the front end and the rear end of the base respectively, paired through holes are formed in the vertical seats, the lock hoops are in a U shape, and the paired lock hoops are installed on the vertical seats in the mode that the two ends penetrate through the paired through holes respectively. The valve core has the advantages that the sealing surface on the outer side of the sealing body on the valve core is favorably processed, the processing of the sealing surface of the valve core is more stable, and the processing precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plug valve processing, and particularly relates to a tool for processing a sealing surface of a plug valve core. 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, so that the valve is opened or closed. 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 a flat plate. 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 sealing surface on the outer side of the fan-shaped sealing body of the valve core cannot be directly processed. In view of this situation, the tool for processing the sealing surface of the plug valve core is proposed. SUMMARY

[0003] The utility model discloses a tool for processing the sealing surface of the plug valve core to solve the above-mentioned problems. The valve core of the plug valve is clamped and counterweighted to change the overall center of gravity of the valve body, ensure the stability of processing the sealing surface of the valve core, and improve the processing precision.

[0004] The utility model discloses a tool for processing the sealing surface of the plug valve core to solve the above-mentioned problems. The valve core of the plug valve is clamped and counterweighted to change the overall center of gravity of the valve body, ensure the stability of processing the sealing surface of the valve core, and improve the processing precision.

[0005] The tool for processing the sealing surface of the plug valve core comprises a base, a counterweight block, a pin rod, a pressing plate, a lock hoop and a first screw rod. A pair of first pin holes are formed in the front-to-back direction on the base. The bottom of the counterweight block is provided with a sliding rail. The counterweight block is installed in the row of counterweight grooves formed in the base through the sliding rail. A pair of second pin holes corresponding to the first pin holes are formed in the counterweight block. The pin rod is installed in the base by sequentially penetrating the first pin holes on the base and the second pin holes on the counterweight block. A pair of vertical seats are fixedly installed at the front and rear ends of the base. 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 through holes are formed in the vertical seats. The lock hoop is U-shaped. A pair of lock hoops are installed on the vertical seats by penetrating the through holes at both ends. A pair of first screw rods are connected with the base through the screw holes formed on the bottom surface of the base. A first nut is fixedly installed on the first screw rod.

[0006] Preferably, the second screw rods are provided at both ends of the lock hoop. Second nuts are threadedly installed on the second screw rods at both ends of the lock hoop.

[0007] Preferably, the tail end of the pin rod is provided with a thread. A third nut is threadedly installed on the tail end of the pin rod.

[0008] Preferably, the pair of pressing plates are fixedly installed in opposite inclined positions on the lower end surface of the stand.

[0009] The beneficial effects achieved by the above technical solutions are:

[0010] By setting the counterweight block on the base, the center of gravity of the valve core is adjusted by the counterweight block, which is beneficial to the machining and processing of the sealing surface outside the sealing body on the valve core. By setting the first screw rod and the locking hoop and other components, the locking hoop is used to embrace the shaft head at both ends of the valve core, thereby firmly fixing the tooling on the valve core of the plug valve. Under the joint action of the second nut and the first nut, the spacing between the counterweight block and the sealing body on the valve core can be adjusted, the center of gravity of the valve core is accurately controlled between the shaft heads at both ends, the machining of the sealing surface of the valve core is more stable, and the machining precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The structure of the valve core to be machined in the utility model is shown in the figure.

[0012] Figure 2 The structure of the utility model is shown in the figure.

[0013] 1, base; 2, counterweight block; 3, pin rod; 4, pressing plate; 5, locking hoop; 6, first screw rod; 7, counterweight groove; 8, stand; 9, first nut; 10, second screw rod; 11, second nut; 12, third nut; 13, slide rail; 14, sealing surface; 15, flat plate; 16, shaft head. DETAILED DESCRIPTION

[0014] By Figure 1 and Figure 2The shown faucet valve core sealing surface processing tool, including base 1, counterweight 2, pin rod 3, pressing plate 4, lock hoop 5 and first screw 6, the base 1 is set with a pair of first pin hole in front and rear through, the bottom of the counterweight 2 is provided with slide rail 13, the counterweight 2 is installed in the row counterweight groove 7 in the base 1 through the slide rail 13, by increasing or decreasing counterweight 2 can be adapted to the counterweight needs of different size or model valve core, the counterweight 2 is set with a pair of second pin hole corresponding to the pair of first pin hole, the pin rod 3 tail end is provided with screw thread, the pin rod 3 is installed in the base 1 through the first pin hole on the base 1 and the second pin hole on the counterweight 2 in turn, the third nut 12 is installed on the tail end screw thread of the pin rod 3, the counterweight is locked on the base 1 through the pin rod 3 and the third nut 12, the base 1 is fixedly installed with vertical seat 8 at both ends, a pair of pressing plate 4 is fixedly installed on the lower end surface of vertical seat 8 at both ends of base 1 in opposite inclined state, when clamping, the vertical seat 8 is abutted on the shaft head at both ends of valve core, a pair of pressing plate 4 plays the role of left and right limiting, the vertical seat 8 is set with a pair of through holes, the lock hoop 5 is U-shaped, the lock hoop 5 is provided with second screw 10 at both ends, a pair of lock hoop 5 is installed on the vertical seat 8 through the second screw 10 at both ends and the pair of through holes, the second nut 11 is respectively screwed on the second screw 10 at both ends of the lock hoop 5, the tool is firmly fixed on the valve core through the shaft head 16 at both ends through the lock hoop 5 and the second nut 11, a pair of first screw 6 is respectively screwed with the base 1 through the screw hole on the bottom surface of the base 1, the first screw 6 is fixedly installed with first nut 9.In use, the end of the first screw 6 is abutted on the flat plate 15 inside the fan-shaped sealing body on the valve core, the extension length of the first screw 6 can be adjusted by turning the first nut 9, 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 second nut 11 and the first nut 9, so as to adjust the gravity center of the clamped valve core, so as to facilitate the processing of the sealing surface 14 outside the sealing body on the valve core.

Claims

1. A tool for processing a sealing surface of a plug valve plug, characterized by: Including base (1), counterweight (2), pin rod (3), pressing plate (4), lock hoop (5) and first screw rod (6), the base (1) is set up with the first pin hole in pairs in front and back, the bottom of the counterweight (2) is provided with slide rail (13), the counterweight (2) is installed in the row of counterweight groove (7) set up in the base (1) through slide rail (13), the counterweight (2) is set up with the second pin hole in pairs corresponding with the first pin hole in pairs, the pin rod (3) is installed in the base (1) through the first pin hole on the base (1) and the second pin hole on the counterweight (2) in turn, the base (1) is fixedly installed with riser (8) respectively at both ends, the pressing plate (4) in pairs is fixedly installed on the lower end surface of the riser (8) at both ends of the base (1), the riser (8) is set up with the through hole in pairs, the lock hoop (5) is U-shaped, the lock hoop (5) in pairs is installed on the riser (8) through the through hole in pairs at both ends, the first screw rod (6) in pairs is respectively connected with the base (1) through the screw hole set up on the bottom surface of the base (1) with the thread, and the first screw rod (6) is fixedly installed with first nut (9).

2. The tap valve trim seal face machining tooling of claim 1, wherein: The second screw rod (10) is arranged at both ends of the lock hoop (5), and the second screw rod (10) at both ends of the lock hoop (5) is respectively screw-mounted with the second nut (11).

3. The tap valve trim seal face machining tooling of claim 1 or 2, wherein: The tail end of the pin rod (3) is provided with a thread, and the tail end of the pin rod (3) is screw-mounted with the third nut (12).

4. The tap valve trim seal face machining tooling of claim 1 or 2, wherein: The pressing plate (4) in pairs is fixedly installed on the lower end surface of the riser (8) in opposite inclined manner.

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