A high-precision valve body inner surface processing device

Abstract

The present invention provides a high-precision valve body inner surface processing device, which includes: a working base plate, a support seat, a push rod, a fastening seat 1, a fastening seat 2, an upper end cover, an inlet, a sealing ring, a clamping seat, a valve body, a fixed base, a lower end cover, an outlet, and a motor. The device adopts a push rod to pass through the fastening seat 1 and the fastening seat 2 at the same time. By adjusting the depth of the two push rods embedded in the fastening seat 2, the clamping degree can be freely adjusted. When the abrasive flow is introduced into the inlet side, the abrasive flow flows out from the outlet side. The lower end cover with a transmission gear drives the device to rotate under the drive of the motor, so that the abrasive is fully in contact with the inner surface of the valve body, which greatly increases the polishing efficiency of the inner surface and channel of the valve body. The device has a compact structure, is easy to disassemble and assemble, has reliable performance, and is economical and affordable.

Description

Technical Field

[0001] The invention relates to abrasive flow machining technology, in particular to an abrasive flow machining device for the inner surface of a high-precision valve body. Background Art

[0002] The valve body plays a very important role in controlling the direction, pressure and flow of the fluid. It is widely used in the fields of chemical industry, printing and dyeing, petrochemical, textile, machinery, metallurgy, etc. The valve body should have good performance and be highly resistant to thermal expansion, impact load, deformation and bending. It should bear the high temperature, high pressure, strong corrosion and high wear of different media. Since the inner surface of the valve body is in direct contact with the medium, if the inner surface roughness of the valve body is large, the medium will generate turbulence in some parts, and the inner surface of the valve body will be seriously worn after working for a long time. Therefore, the processing quality of the inner surface plays a vital role in the safety and stability of the equipment. Polishing of the inner surface of the valve body becomes particularly important.

[0003] Abrasive flow machining is a new type of mechanical processing method, which uses abrasive media (a flowable mixture mixed with abrasive particles) to flow over the surface of the workpiece under pressure to remove burrs, flash, and round corners to reduce the waviness and roughness of the workpiece surface and achieve precision machining finish. Some complex internal surfaces or curved surfaces are difficult to polish through conventional processing, and abrasive flow machining can solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a high-precision valve body inner surface processing device to solve the problem of difficult valve body inner surface processing.

[0005] The present invention provides the following technical solutions: a high-precision valve body inner surface processing device, characterized in that: the processing device is composed of a working base plate, a support seat, a push rod, a fastening seat 1, a fastening seat 2, an upper end cover, an inlet, a sealing ring, a clamping seat, a valve body, a thrust ball bearing, a sleeve, a fixed base, a lower end cover, an outlet, and a motor. The support seat is fixed to the working base plate by bolts, the outer cylindrical surface of the sleeve is interference-fitted with the inner surface of the support seat, the lower ring of the thrust ball bearing is interference-fitted with the sleeve, the fixed base is interference-fitted with the tight edge upper ring of the thrust ball bearing, and the lower end cover is fixed to the lower part of the fixed base by bolts; the valve body is fixed to the upper end of the fixed base; the sealing ring is sleeved on the bottom of the cylindrical end of the valve body, the two clamping seats have inclined ports facing upwards, which are matched with the cylindrical surface of the valve body, the bottom of the clamping seat has an annular groove, and the sealing ring is embedded in the groove; the clamping of the device is achieved by the threaded push rod passing through the fastening seat 1 and the fastening seat 2 at the same time. The fastening seat 1 is fixed to the fixed base by bolts, and the fastening seat 2 is fixed to the clamping seat by bolts. The centers of the threaded holes of the fastening seat 1 and the fastening seat 2 are coaxial and collinear. The sealing ring is embedded in the upper end cover with an annular groove, and the upper end cover is fixed to the clamping seat by bolts; the inlet is coaxially connected to the upper end cover and can be rotatably installed but not axially movable; the outlet is fixed in the through hole at the bottom of the fixed base and can be rotatably installed but not axially movable.

[0006] Furthermore, as a preference: the outer cylindrical surface of the sleeve is interference fit with the inner surface of the support seat, and the lower ring of the thrust ball bearing is interference fit with the inner cylindrical surface of the sleeve; and the height of the sleeve is lower than the height of the upper ring of the thrust ball bearing; this not only achieves the effect of positioning the device, but also ensures that the upper ring of the bearing has no friction resistance when rotating.

[0007] Furthermore, as a preferred embodiment, the fixed base is interference fit with the tight side upper ring of the thrust ball bearing. Since the fixed base is interference fit with the upper ring of the thrust ball bearing, when the fixed base rotates, the upper ring of the thrust ball bearing and the ball part can be driven to rotate.

[0008] Further, as a preference: the lower end cover with the transmission gear is fixed to the lower part of the fixed base by bolts, and the transmission gear obtains rotational energy from the motor; the lower end cover is connected to the fixed base by bolts, thereby driving the fixed base to rotate; and then driving the entire device to rotate.

[0009] Further, as a preference: the clamping of the device is achieved by having a threaded push rod pass through both the fastening seat 1 and the fastening seat 2 at the same time, the push rod passes through both the fastening seat 1 and the fastening seat 2 at the same time, and the degree of clamping can be freely adjusted by adjusting the depth of the two push rods embedded in the fastening seat 2.

[0010] Further, as a preference: the inlet is coaxially connected to the upper end cover, and can be rotatably installed but cannot be axially moved; the outlet is fixed in the through hole below the fixed base, and can be rotatably installed but cannot be axially moved; the abrasive flow is allowed to enter one side of the inlet, and the abrasive flow flows out from one side of the outlet, and the lower end cover with the transmission gear is driven by the motor to drive the entire device to rotate, so that the abrasive particles are in full contact with the inner surface of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the assembly diagram of the present invention

[0012] Figure 2 It is a schematic diagram of the structure of the present invention

[0013] Figure 3 It is a schematic diagram of the top rod

[0014] Figure 4 This is a schematic diagram of the fastening seat 1

[0015] Figure 5 This is a schematic diagram of the fastening seat 2

[0016] Figure 6 Schematic diagram of the clamping seat

[0017] Figure 7 Schematic diagram of the valve body

[0018] Figure 1 Middle: 1. Workbench, 2. Support seat, 3. Push rod, 4. Fastening seat 1, 5. Fastening seat 2, 6. Upper cover, 7. Inlet, 8. Sealing ring, 9. Clamping seat, 10. Valve body, 11. Thrust ball bearing, 12. Bushing, 13. Fixed base, 14. Lower cover, 15. Outlet. Specific implementation plan

[0019] The device is installed in the following order: the support seat (2) is fixed on the working base plate (1) by bolts, the outer cylindrical surface of the sleeve (12) is interference fit with the inner surface of the support seat (2), the lower ring of the thrust ball bearing (11) is interference fit with the sleeve (12), the fixed base (13) is interference fit with the upper ring of the thrust ball bearing (11), and the lower end cover (14) with the transmission gear is fixed to the lower end of the fixed base (13) by bolts. The valve body (10) is fixed to the upper end of the fixed base (13). The sealing ring (8) is sleeved on the bottom of the cylindrical end of the valve body (10), and the two clamping seats (9) have inclined ports facing upward and are matched with the cylindrical surface of the valve body (10); the bottom of the clamping seat (9) is provided with an annular groove, and the sealing ring (8) is embedded in the groove. The clamping of the device is achieved by a threaded push rod (3) passing through the fastening seat 1 (4) and the fastening seat 2 (5) at the same time. The fastening seat 1 (4) is fixed to the fixed base (13) by bolts, and the fastening seat 2 (5) is fixed to the clamping seat (9) by bolts. The fastening seat 1 (4) and the fastening seat 2 (5) have threaded holes with coaxial and collinear centers. The sealing ring (8) is embedded in the upper cover (6) with an annular groove, and the upper cover (6) is fixed to the clamping seat (9) by bolts. The inlet (7) is coaxially connected with the upper cover (6) and can be rotatably installed but not axially movable; the outlet (15) is fixed in the through hole at the bottom of the fixed base (13) and can be rotatably installed but not axially movable.

[0020] When working, the clamping of the device is achieved by the threaded push rod (3) passing through the fastening seat 1 (4) and the fastening seat 2 (5) at the same time; the push rod (3) passes through the fastening seat 1 (4) and the fastening seat 2 (5) at the same time, and the degree of clamping can be freely adjusted by adjusting the depth of the two push rods embedded in the fastening seat 2; because the outer cylindrical surface of the sleeve (12) and the inner cylindrical surface of the support seat (2) are interference fit, the lower ring of the rolling bearing (11) and the inner surface of the sleeve (12) are interference fit, the fixed base (13) and the tight edge (upper ring) of the thrust ball bearing (11) are interference fit, and the lower end cover (14) with the transmission gear The valve body (11) is fixed to the lower end of the fixed base (13) by bolts; the transmission gear obtains rotational energy from the motor, thereby driving the lower end cover (14) to rotate, thereby driving the entire device to rotate; the inlet (7) is coaxially connected to the upper end cover (6), and is rotatably mounted but not axially movable; the outlet (15) is fixed in a through hole at the bottom of the fixed base (13), and is rotatably mounted but not axially movable; an abrasive flow is introduced into one side of the inlet (7), and the abrasive flow flows out from one side of the outlet (15); the valve body (11) rotates under the drive of the motor, so that the abrasive grains are in full contact with the inner surface of the valve body (11), thereby greatly increasing the polishing efficiency.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision valve body inner surface processing device, characterized in that: The processing device is composed of a working base plate, a support seat, a push rod, a fastening seat 1, a fastening seat 2, an upper end cover, an inlet, a sealing ring, a clamping seat, a valve body, a thrust ball bearing, a sleeve, a fixed base, a lower end cover, an outlet, and a motor. The support seat is fixed to the working base plate by bolts, the outer cylindrical surface of the sleeve is interference fit with the inner surface of the support seat, the lower ring of the thrust ball bearing is interference fit with the sleeve, the fixed base is interference fit with the upper ring of the thrust ball bearing, and the lower end cover with a transmission gear is fixed to the lower part of the fixed base by bolts; the valve body is fixed on the upper end of the fixed base; the sealing ring is sleeved on the bottom of the cylindrical end of the valve body, and the two clamping seats are provided with The inclined port faces upward and cooperates with the cylindrical surface of the valve body. The bottom of the clamping seat is provided with an annular groove, and the sealing ring is embedded in the groove; the clamping of the device is achieved by a threaded push rod passing through the fastening seat 1 and the fastening seat 2 at the same time, the fastening seat 1 is fixed to the fixed base by bolts, and the fastening seat 2 is fixed to the clamping seat by bolts, the threaded hole centers of the fastening seat 1 and the fastening seat 2 are coaxial and collinear, the sealing ring is embedded in the upper end cover with an annular groove, and the upper end cover is fixed to the clamping seat by bolts; the inlet is coaxially connected to the upper end cover and can be rotatably installed but not axially movable; the outlet is fixed in the through hole at the bottom of the fixed base and can be rotatably installed but not axially movable.

2. A high-precision valve body inner surface processing device according to claim 1, characterized in that: The outer cylindrical surface of the sleeve is interference fit with the inner surface of the support seat, the lower ring of the thrust ball bearing is interference fit with the inner cylindrical surface of the sleeve, and the height of the sleeve is lower than the height of the upper ring of the thrust ball bearing; this can not only achieve the effect of positioning the device, but also ensure that the upper ring of the bearing has no friction resistance when rotating.

3. A high-precision valve body inner surface processing device according to claim 1, characterized in that: The fixed base and the upper ring of the thrust ball bearing are interference fit; due to the interference fit between the fixed base and the upper ring of the thrust ball bearing, when the fixed base rotates, the upper ring of the thrust ball bearing and the ball part can be driven to rotate.

4. A high-precision valve body inner surface processing device according to claim 1, characterized in that: The lower end cover with the transmission gear is fixed to the lower part of the fixed base by bolts, and the transmission gear obtains rotation energy from the motor; the lower end cover is connected with the fixing seat bolts, thereby driving the fixed base to rotate; and then driving the entire device to rotate.

5. The high-precision valve body inner surface processing device according to claim 1, characterized in that: The clamping of the device is achieved by having a threaded push rod pass through both the fastening seat 1 and the fastening seat 2. The push rod passes through both the fastening seat 1 and the fastening seat 2. By adjusting the depth of the two push rods embedded in the fastening seat 2, the degree of clamping can be freely adjusted.

6. A high-precision valve body inner surface machining device according to claim 1, characterized in that: The inlet is coaxially connected to the upper end cover and can be rotatably installed but cannot be axially moved; the outlet is fixed in the through hole below the fixed base and can be rotatably installed but cannot be axially moved; when the abrasive flow enters one side of the inlet, the abrasive flow flows out from one side of the outlet, and the lower end cover with the transmission gear drives the entire device to rotate under the drive of the motor, so that the abrasive particles are in full contact with the inner surface of the valve body.

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