A valve body die forging positioning tool suitable for forging a stop valve

Abstract

This invention provides a valve body forging positioning fixture suitable for forging gate valves. It includes a forging table, a first hydraulic cylinder rotatably connected to the forging table via a rotating shaft, a swing arm rotatably connected to the telescopic end of the first hydraulic cylinder, a swing frame fixedly connected to the upper end of the forging table, the swing frame rotatably connected to the swing arm, a first gate valve forging upper seat fixedly connected to the left end of the swing arm, a first gate valve forging lower seat fixedly connected to the forging table, and a sliding connecting rod fixedly connected to the front end of the swing arm. This design solves the problem that existing devices require positioning and installing the gate valve on a positioning fixture before forging, but the fixed structure of the existing positioning fixture reduces its application range. This invention has a reasonable structure, good practicality, and can adjust the spacing of the positioning components according to different types of gate valves, enabling the use of different types of gate valves and thus increasing the application range of the gate valve.

Description

Technical Field

[0001] This utility model is a valve body forging positioning tool suitable for gate valve forging, belonging to the field of gate valve technology. Background Technology

[0002] A gate valve, also known as a stop valve, is a forced-seal valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to ensure a leak-proof seal. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the frictional force of the valve stem and packing, plus the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the valve stem diameter must be larger; otherwise, the valve stem may bend. According to the connection method, there are three types: flange connection, threaded connection, and welded connection. Since the advent of self-sealing valves, the medium flow direction in gate valves has changed to entering the valve cavity from above the valve disc. In this case, under the action of medium pressure, the force required to close the valve is smaller, while the force required to open it is larger, and the valve stem diameter can be reduced accordingly.

[0003] In the existing technology, when forging a gate valve, it is necessary to first position and install it on a positioning fixture. However, the existing positioning fixture has a fixed structure, which reduces its application range. There is an urgent need for a valve body forging positioning fixture suitable for gate valve forging to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a valve body forging positioning fixture suitable for gate valve forging, thereby solving the problems mentioned in the background art. This invention has good practicality and can adjust the spacing of the positioning components according to different types of gate valves, enabling it to be used with different types of gate valves, thus increasing the application range of gate valves.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a valve body forging positioning fixture suitable for gate valve forging, including a forging table, a first hydraulic cylinder rotatably connected to the forging table via a rotating shaft, a swing arm rotatably connected to the telescopic end of the first hydraulic cylinder, a swing frame fixedly connected to the upper end of the forging table, the swing frame rotatably connected to the swing arm, a first gate valve forging upper seat fixedly connected to the left end of the swing arm, and a first gate valve forging lower seat fixedly connected to the forging table;

[0006] A sliding connecting rod is fixedly connected to the front end of the swing arm. A second shut-off valve forging upper seat is slidably connected to the surface of the sliding connecting rod. A support frame is slidably connected to the surface of the sliding connecting rod. A slide block is fixedly connected inside the forging table. A second shut-off valve forging lower seat is slidably connected inside the slide block. A rotating cylinder is fixedly connected to the front end of the second shut-off valve forging lower seat. A sleeve is rotatably connected to the surface of the rotating cylinder. A sliding rod is fixedly connected to the upper end of the sleeve. A second hydraulic cylinder is fixedly connected inside the forging table. The telescopic end of the second hydraulic cylinder is fixedly connected to the second shut-off valve forging lower seat.

[0007] Furthermore, the front end of both the forged lower seat of the second shut-off valve and the support frame are fixedly connected with sealing caps.

[0008] Furthermore, two mounting blocks are fixedly connected to both the front and rear ends of the forging table, and a limit block is fixedly connected to the front end of the sliding connecting rod.

[0009] Furthermore, the sliding rod is slidably connected to the support frame.

[0010] Furthermore, a limiting slide rod is fixedly connected inside the forging table, and the second shut-off valve forging lower seat is slidably connected to the limiting slide rod.

[0011] Furthermore, the first forged lower stop valve seat, the first forged upper stop valve seat, the second forged upper stop valve seat, and the second forged lower stop valve seat cooperate with each other.

[0012] The beneficial effects of this utility model are as follows: This utility model provides a valve body forging positioning fixture suitable for gate valve forging. Because this utility model adds a first hydraulic cylinder, a swing arm, a second gate valve forging upper seat, a first gate valve forging lower seat, a first gate valve forging lower seat, a second gate valve forging lower seat, a sliding connecting rod, a second hydraulic cylinder, a sleeve, a support frame, a sliding rod, and a rotating cylinder, our design improvements and actual use have shown that this device has a reasonable structure, good practicality, and can adjust the spacing of the positioning components according to different types of gate valves, so that it can be used with different types of gate valves, thereby increasing the application range of gate valves. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a valve body die forging positioning tool suitable for gate valve forging according to the present invention.

[0015] Figure 2 This is a first-view cross-sectional structural diagram of a valve body forging positioning fixture suitable for gate valve forging according to the present invention.

[0016] Figure 3 This is a second-view cross-sectional structural diagram of a valve body forging positioning fixture suitable for gate valve forging according to the present invention.

[0017] Figure 4 This is a third-view cross-sectional structural diagram of a valve body forging positioning fixture suitable for gate valve forging according to the present invention.

[0018] Figure 5 This utility model relates to a valve body forging positioning fixture suitable for gate valve forging. Figure 4 Schematic diagram of the structure at point A;

[0019] Figure 6 This is a schematic diagram of the swing arm in a valve body forging positioning fixture applicable to gate valve forging according to this utility model.

[0020] Figure 7 This is a schematic diagram of the structure of the first stop valve forging lower seat in a valve body die forging positioning tool applicable to stop valve forging according to the present invention;

[0021] Figure 8 This is a schematic diagram of the structure of the first gate valve forging upper seat in a valve body die forging positioning tool applicable to gate valve forging according to this utility model;

[0022] Figure 9 This is a schematic diagram of the structure of the second gate valve forging lower seat in a valve body die forging positioning tool applicable to gate valve forging according to this utility model.

[0023] In the diagram: 1-Forging table, 2-Sealing cover, 3-Mounting block, 4-First hydraulic cylinder, 5-Swing arm, 6-First shut-off valve forging upper seat, 7-First shut-off valve forging lower seat, 8-Second shut-off valve forging upper seat, 9-Second shut-off valve forging lower seat, 10-Sliding connecting rod, 11-Support frame, 12-Limit sliding rod, 13-Sliding seat, 14-Second hydraulic cylinder, 15-Sliding rod, 16-Sleeve, 17-Swing frame, 18-Rotating drum. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Please see Figures 1-9This utility model provides a technical solution: a valve body forging positioning fixture suitable for forging gate valves, including a forging table 1, a first hydraulic cylinder 4 rotatably connected to the forging table 1 via a rotating shaft, a swing arm 5 rotatably connected to the telescopic end of the first hydraulic cylinder 4, a swing frame 17 fixedly connected to the upper end of the forging table 1, the swing frame 17 being rotatably connected to the swing arm 5, a first gate valve forging upper seat 6 fixedly connected to the left end of the swing arm 5, a first gate valve forging lower seat 7 fixedly connected to the forging table 1, a sliding connecting rod 10 fixedly connected to the front end of the swing arm 5, a second gate valve forging upper seat 8 slidably connected to the surface of the sliding connecting rod 10, and the surface of the sliding connecting rod 10... A support frame 11 is slidably connected to the surface. A slide block 13 is fixedly connected inside the forging table 1. A second stop valve forging lower seat 9 is slidably connected inside the slide block 13. A rotating cylinder 18 is fixedly connected to the front end of the second stop valve forging lower seat 9. A sleeve 16 is rotatably connected to the surface of the rotating cylinder 18. A sliding rod 15 is fixedly connected to the upper end of the sleeve 16. A second hydraulic cylinder 14 is fixedly connected inside the forging table 1. The telescopic end of the second hydraulic cylinder 14 is fixedly connected to the second stop valve forging lower seat 9. This design solves the problem that when the original device forges the stop valve, it is necessary to first position and install it on the positioning fixture. However, the existing positioning fixture has a fixed structure, which reduces its application range.

[0026] As the first embodiment of this utility model: A sealing cover 2 is fixedly connected to the front end of both the second stop valve forging lower seat 9 and the support frame 11. Installed on the second stop valve forging lower seat 9 and the support frame 11, it seals the through holes on the surface of the forging table 1, preventing external forging debris from entering the forging table 1. Two mounting blocks 3 are fixedly connected to both the front and rear ends of the forging table 1. A limiting block is fixedly connected to the front end of the sliding connecting rod 10. The mounting blocks 3 installed at the front and rear ends of the forging table 1 can be fixed to the bracket or the ground with screws. The limiting block installed at the front end of the sliding connecting rod 10 restricts the movement space of the second stop valve forging upper seat 8, preventing the second stop valve forging upper seat 8 from slipping when adjusting the distance between the first stop valve forging upper seat 6 and the second stop valve forging upper seat 8. The sliding rod 15 is slidably connected to the support frame 11. When the first hydraulic cylinder 4 pulls the first shut-off valve forging upper seat 6 to release the shut-off valve, the sliding connecting rod 10 will drive the support frame 11 to slide upward. The sliding rod 15 can pull the support frame 11 and the sleeve 16. A limiting sliding rod 12 is fixedly connected inside the forging table 1. The second shut-off valve forging lower seat 9 is slidably connected to the limiting sliding rod 12. The limiting sliding rod 12 installed inside the forging table 1 can support the second shut-off valve forging lower seat 9 to slide within the forging table 1, increasing the stability of the movement of the second shut-off valve forging lower seat 9. The first shut-off valve forging lower seat 7, the first shut-off valve forging upper seat 6, the second shut-off valve forging upper seat 8, and the second shut-off valve forging lower seat 9 cooperate with each other to fix the shut-off valve so that the user can align the forging process.

[0027] As a second embodiment of this utility model: depending on the type of gate valve being processed, the second hydraulic cylinder 14 can be controlled to drive the second gate valve forging lower seat 9 to slide forward, while simultaneously pulling the support frame 11 to move forward through the rotating cylinder 18 in conjunction with the second gate valve forging upper seat 8. After adjusting the position, the gate valve is placed on the second gate valve forging lower seat 9 and the first gate valve forging lower seat 7. The first hydraulic cylinder 4 is then controlled to push the swing arm 5 to swing to the left, causing the first gate valve forging upper seat 6 and the second gate valve forging upper seat 8 to press the gate valve. The first gate valve forging upper seat 6, the second gate valve forging upper seat 8, the first gate valve forging lower seat 7, and the second gate valve forging lower seat 9 can fix the gate valve on the forging table 1. After the gate valve is forged, the first hydraulic cylinder 4 can be controlled to pull the swing arm 5 to swing to the right and downward, causing the first gate valve forging upper seat 6 and the second gate valve forging upper seat 8 to release the gate valve.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve body forging positioning fixture suitable for gate valve forging, comprising a forging table (1), characterized in that: The forging table (1) is rotatably connected to a first hydraulic cylinder (4) via a rotating shaft. The telescopic end of the first hydraulic cylinder (4) is rotatably connected to a swing arm (5). The upper end of the forging table (1) is fixedly connected to a swing frame (17). The swing frame (17) is rotatably connected to the swing arm (5). The left end of the swing arm (5) is fixedly connected to a first shut-off valve forging upper seat (6). The forging table (1) is fixedly connected to a first shut-off valve forging lower seat (7). The front end of the swing arm (5) is fixedly connected to a sliding link (10), the surface of the sliding link (10) is slidably connected to a second shut-off valve forging upper seat (8), the surface of the sliding link (10) is slidably connected to a support frame (11), the forging table (1) is fixedly connected to a slide seat (13), the slide seat (13) is slidably connected to a second shut-off valve forging lower seat (9), the front end of the second shut-off valve forging lower seat (9) is fixedly connected to a rotating cylinder (18), the surface of the rotating cylinder (18) is rotatably connected to a sleeve (16), the upper end of the sleeve (16) is fixedly connected to a sliding rod (15), the forging table (1) is fixedly connected to a second hydraulic cylinder (14), and the telescopic end of the second hydraulic cylinder (14) is fixedly connected to the second shut-off valve forging lower seat (9).

2. A valve body forging positioning fixture suitable for gate valve forging according to claim 1, characterized in that: The front ends of the second shut-off valve forging lower seat (9) and the support frame (11) are both fixedly connected with sealing caps (2).

3. A valve body forging positioning fixture suitable for gate valve forging according to claim 1, characterized in that: Two mounting blocks (3) are fixedly connected to both the front and rear ends of the forging table (1), and a limit block is fixedly connected to the front end of the sliding connecting rod (10).

4. A valve body forging positioning fixture suitable for gate valve forging according to claim 1, characterized in that: The sliding rod (15) is slidably connected to the support frame (11).

5. A valve body forging positioning fixture suitable for gate valve forging according to claim 1, characterized in that: The forging table (1) is fixedly connected to a limiting slide rod (12), and the second shut-off valve forging lower seat (9) is slidably connected to the limiting slide rod (12).

6. A valve body forging positioning fixture suitable for gate valve forging according to claim 1, characterized in that: The first forged lower stop valve seat (7), the first forged upper stop valve seat (6), the second forged upper stop valve seat (8), and the second forged lower stop valve seat (9) cooperate with each other.

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