Machining clamp for valve body of single-side bevel gate valve

Abstract

The utility model belongs to the field of gate valve machining, and particularly relates to a gate valve body machining jig. A machining clamp for a valve body of a single-side slope gate valve comprises a wedge-shaped base plate, at least two movable pressing plates are installed on the base plate at intervals, a positioning support is further installed on the base plate, the two movable pressing plates and the positioning support form a triangle, the positioning support is an L-shaped support, one end of the positioning support is installed on the base plate, and a positioning rod is arranged at the end of the suspended end of the positioning support. Compared with a traditional gate valve wedge-shaped sealing face machining device, the gate valve wedge-shaped sealing face machining device is simple in structure and convenient to operate. More importantly, the method is suitable for the gate valve with a straight sealing surface and an inclined surface, the direction positioning is accurate and uniform, the isotropy of the inclined surface of the sealing surface of the gate valve is ensured, the newly developed single-side inclined surface gate valve is realized, the product quality is ensured, the unified standard of the valve body and the valve plate is ensured, and all gate valve product parts have universality and interchangeability; and a terminal user can replace parts at any time during maintenance.

Description

Technical Field

[0001] The utility model belongs to the field of gate valve processing, in particular to a gate valve body processing jig. Background Art

[0002] The gate valve's opening and closing member is the disc. The disc's movement is perpendicular to the flow direction, and the valve can only be fully opened or closed; it cannot be adjusted or throttled. The disc has two sealing surfaces. The most commonly used model is a wedge-shaped disc with two sealing surfaces. The wedge angle varies with valve parameters, and the valve body's sealing surface is also wedge-shaped.

[0003] Existing gate valve sealing surface machining is focused on wedge-shaped machining. Due to the irregular shape of the gate valve, clamping and positioning are difficult. The wedge-shaped sealing surface is inclined, making precise positioning and machining difficult. Current machining efforts are constantly improving in terms of accuracy, efficiency, and pass rate to meet the machining requirements for wedge-shaped sealing surfaces. However, special gate valves, with one straight sealing surface and the other inclined, present a significant challenge in gate valve machining. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of insufficient directional accuracy when machining the sealing surface of a gate valve with one side straight and the other side inclined, and to provide a single-sided inclined gate valve body machining fixture with a simple structure and easy operation. More importantly, it ensures that the direction of the sealing surface is accurate and uniform.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a single-sided inclined gate valve body processing fixture, including a chassis, which is a wedge-shaped chassis, and at least two movable pressure plates are installed on the chassis at intervals. A positioning bracket is also installed on the chassis, and the two movable pressure plates and the positioning bracket form a triangle. The positioning bracket is an L-shaped bracket, one end of the positioning bracket is installed on the chassis, and the end of the suspended end is provided with a positioning rod.

[0006] Furthermore, the movable pressure plate includes a pressure plate with a slide groove, a screw is fixed on the chassis, the screw is placed in the pressure plate slide groove, and the end of the screw is provided with a locking nut.

[0007] Furthermore, the positioning rod is a screw rod, the suspended end of the positioning bracket is provided with a screw hole, and the screw rod and the positioning bracket are threadedly connected through the screw hole.

[0008] Furthermore, the sliding groove of the pressing plate is a long groove along the radial direction, and the screw fixed on the chassis passes through the sliding groove and the end of the screw protrudes from the upper surface of the pressing plate.

[0009] Furthermore, the positioning screw is provided with a fixing nut.

[0010] Compared with traditional gate valve wedge-shaped sealing surface processing devices, this utility model has a simple structure and is easy to operate. More importantly, it is suitable for gate valves with one straight sealing surface and one inclined sealing surface, ensuring precise and uniform directional positioning, ensuring the same direction of the inclined surfaces of the gate valve sealing surface, and enabling the development of newly developed single-sided inclined gate valves. It also ensures product quality, uniform standards for valve bodies and valve plates, and universal and interchangeable components for all gate valve products, allowing end users to replace components at any time during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the gate valve body to be processed.

[0012] Figure 2 It is a schematic structural diagram of the utility model.

[0013] Figure 3 It is a side view of the chassis of the utility model.

[0014] Figure 4 This is a state diagram of the utility model.

[0015] In the figure: 1. Chassis; 2. Movable pressure plate; 3. Positioning bracket; 4. Screw; 5. Positioning rod; 6. Single-side gate valve. DETAILED DESCRIPTION

[0016] The present application is described in detail below with reference to the accompanying drawings and specific embodiments, but the protection of the present application is not limited to the specific embodiments. Example

[0017] Processing Figure 1 The unilateral gate valve 6 shown in the figure has a gate valve sealing surface to be processed with one side being a straight surface and the other side being an inclined surface. The unilateral inclined gate valve body processing fixture is as follows: Figure 2-3 As shown, it includes a wedge-shaped chassis 1, on which at least two movable pressure plates 2 are installed at intervals, and a positioning bracket 3 is also installed on the chassis. The two movable pressure plates and the positioning bracket form a triangle, and the positioning bracket is an L-shaped bracket. One end of the positioning bracket is installed on the chassis, and the end of the suspended end is provided with a positioning rod 5.

[0018] Based on Example 1, the movable pressure plate includes a pressure plate with a chute, which is a long radial groove. A screw is fixed to a wedge-shaped base. The screw is positioned within the chute, with the end of the screw protruding from the upper surface of the pressure plate. The end of the screw is equipped with a locking nut. The screw slides within the chute and is adjustable in position up and down, making it suitable for processing gate valves with different end face thicknesses and diameters. It is flexible and widely applicable.

[0019] The positioning rod is a positioning screw, and the positioning bracket has a screw hole at the suspended end. The positioning screw is threadedly connected to the positioning bracket through the screw hole, and the positioning screw is provided with a fixing nut. This structural design allows the positioning rod to adjust the positioning point through the screw, and is suitable for processing gate valve bodies of different specifications.

[0020] When processing Figure 4 As shown, first adjust the position of the positioning rod according to the specifications of the valve body to be processed, adjust and calibrate, and then lock the positioning rod with a nut. Before processing the gate valve, loosen the locking nut of the movable pressure plate, place the gate valve body on the wedge-shaped chassis, place the pressure plate on the end face of the gate valve body, and position the positioning rod on the positioning bracket against the inner wall of the valve body. Then tighten the pressure plate locking nut to achieve the clamping and fixation of the gate valve body and proceed with the gate valve processing.

Claims

1. A single-side inclined gate valve body processing fixture, including a chassis, characterized in that: The chassis is a wedge-shaped chassis, at least two movable pressure plates are installed on the chassis at intervals, and a positioning bracket is also installed on the chassis. The two movable pressure plates and the positioning bracket form a triangle. The positioning bracket is an L-shaped bracket, one end of the positioning bracket is installed on the chassis, and the end of the suspended end is provided with a positioning rod.

2. The single-side inclined gate valve body machining fixture according to claim 1 is characterized in that: The movable pressing plate comprises a pressing plate with a sliding groove, a screw rod is fixed on the chassis, the screw rod is placed in the sliding groove of the pressing plate, and a locking nut is provided at the end of the screw rod.

3. The single-side inclined gate valve body machining fixture according to claim 1 is characterized in that: The positioning rod is a positioning screw, the suspended end of the positioning bracket is provided with a screw hole, and the positioning screw is threadedly connected with the positioning bracket through the screw hole.

4. The single-side inclined gate valve body machining fixture according to claim 2 is characterized in that: The slide groove of the pressing plate is a long groove along the radial direction, and the screw rod fixed on the chassis passes through the slide groove and the end of the screw rod protrudes out of the upper surface of the pressing plate.

5. The single-side inclined gate valve body machining fixture according to claim 3 is characterized in that: The positioning screw rod is provided with a fixing nut.

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