A pv valve grinding device

Abstract

The utility model technical scheme is a kind of PV valve grinding device, including support mechanism, the support mechanism includes 1 base plate, 1 rectangular frame, the rectangular frame is vertically fixed on the bottom plate with short side, after being fixed, the upper end of the rectangular frame is equipped with upper limit stop plate, upper limit stop plate is equipped with 1 through hole a, still include position adjusting mechanism, the position adjusting mechanism includes 1 screw rod assembly, 1 lifting platform, lifting platform is equipped with rear fixed device and screw rod nut fixed, screw rod passes through the through hole a of upper limit stop plate, screw rod nut is extended to the other side of lifting platform after, lifting platform is horizontally passed through the opening of the rectangular frame and is equipped with 1 through hole b, by front fixed device fixed, still include a clamp, the clamp includes operating handle and chuck, handle is passed through the through hole b from below to above, and the valve core of PV valve is fixed by chuck. Improve the quality and efficiency of grinding, save a large amount of manual cost, and practicality is strong.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, specifically a PV valve grinding device. BACKGROUND

[0002] PV valve is composed of pressure valve and vacuum valve, and is internally provided with a valve structure being opened in both directions, and has fireproof and explosion-proof functions. When the pressure in the oil tank is increased and exceeds a set pressure value, the pressure valve is opened to discharge air outward. When the pressure in the oil tank is decreased to a certain degree (vacuum is generated), and is lower than the set pressure value, the vacuum valve is opened to allow outside air to enter the oil tank. The "breathing" process helps to maintain the pressure balance in the cargo tank, and prevents oil and gas leakage caused by excessive pressure or insufficient pressure. However, because the gas-liquid ratio fluctuates greatly, the valve core is opened and closed too frequently, and the valve sealing property is often manually damaged. During the repair of the ship, various PV valve core and valve seat sealing problems are often encountered. Because the sizes of the valves are different, the current grinding is performed manually, the efficiency is very poor, and the test is slow. The PV valve is very important in the oil tanker, and the sealing property is also high. The manual grinding efficiency is very low, and the work is completed at the last moment before the ship sails, which is very hurried. SUMMARY

[0003] The utility model provides a PV valve grinding device to solve the technical defects of the prior art.

[0004] To solve the above technical problems, the utility model technical scheme is a PV valve grinding device, which comprises a supporting mechanism, the supporting mechanism comprises a base plate, a rectangular frame, the rectangular frame is vertically fixed on the bottom plate with the short side, and an upper limiting plate is horizontally arranged at the upper end of the rectangular frame after being fixed. The upper limiting plate is provided with a through hole a. The device further comprises a position adjusting mechanism, the position adjusting mechanism comprises a screw rod assembly and a lifting platform. The lifting platform is provided with a rear fixing device and a screw nut. The screw rod extends to the other side of the lifting platform after passing through the through hole a of the upper limiting plate and the screw nut. The lifting platform is provided with a through hole b after passing through the opening of the rectangular frame. The front fixing device is used for fixing the lifting platform. The device further comprises a clamp, the clamp comprises a handle and a chuck. The handle passes through the through hole b from bottom to top, and the chuck is used for fixing the valve core of the PV valve.

[0005] Specifically, the chuck is in U shape, and the two legs of the U-shaped chuck are inserted into the inner hole of the PV valve core to fix the valve core.

[0006] Specifically, the chuck is in U shape, and the two legs of the U-shaped chuck are welded on the PV valve core to fix the valve core.

[0007] Specifically, a motor is fixed on the lifting platform, the motor output shaft assembly is fixedly connected with the handle of the clamp, and the motor is powered by a cable connected with a matching power supply.

[0008] Specifically, the motor is a speed-reducing motor.

[0009] Specifically, a control box is connected between the motor and the power supply.

[0010] Specifically, a lower limiting plate is horizontally arranged at the lower end of the rectangular frame, and a recess is arranged on the lower limiting plate, and the screw rod abuts into the recess.

[0011] Specifically, a bearing is arranged in the recess, and the screw rod is fixedly connected with the inner wheel of the bearing.

[0012] Specifically, a hand wheel is arranged at one end of the screw rod above the upper limiting plate.

[0013] Due to the tool designed according to the specific structure of the PV valve, the valve core and the valve seat are the tool and the object of mutual grinding, and under the adjustment of the position adjustment mechanism, the valve core and the valve seat can be precisely positioned together. The new type can quickly complete the grinding work, save a large amount of labor, improve the precision and quality, improve the grinding quality and efficiency, save a large amount of labor cost, and has strong practicality. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, and are not a limitation on the present application.

[0015] Figure 1 is a front view of a grinding device of a PV valve

[0016] Figure 2 is a side view of the grinding device of the PV valve in a non-working state

[0017] Figure 3 is a side view of the grinding device of the PV valve in a working state

[0018] Figure 4 is a top view of the grinding device of the PV valve

[0019] Figure 5 is a schematic view of a PV valve (pressure vacuum valve)

[0020] Figure 6 is a P valve (pressure valve)

[0021] Figure 7 is a V valve (vacuum valve)

[0022] Figure 8 is a V valve core

[0023] Figure 9 is sandpaper

[0024] Wherein: 1, control box, 2, motor, 3, lifting platform, 4, output shaft assembly, 5, fixture, 6, rectangular frame, 7, base plate, 8, front fixing device, 9, front fixing device locking bolt, 10, hand wheel, 11, upper limit plate, 12, screw rod assembly in screw rod, 13, rear fixing device fixing bolt, 14, rear fixing device fixing nut, 15, rear fixing device, 16, bearing, 17, lower limit plate, 18, a P valve core, 19, P valve core counterweight, 20, a P valve seat, 21, a V valve core, 22, a V valve seat, 23, V valve cover, 24, sandpaper DETAILED DESCRIPTION

[0025] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the scope of protection of the present application.

[0026] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as their common meanings to those skilled in the art to which the present application pertains.

[0027] As Figure 1 shown, the technical scheme of the present application is a PV valve grinding device, which comprises a supporting mechanism, the supporting mechanism comprises a base plate 7 and a rectangular frame, the rectangular frame is fixed vertically on the base plate 7 with a short side, and an upper limit plate 11 is horizontally arranged at the upper end of the rectangular frame after being fixed, the upper limit plate 11 is provided with a through hole a, further comprising a position adjusting mechanism, the position adjusting mechanism comprises a screw rod assembly and a lifting platform 3, the lifting platform 3 is provided with a rear fixing device 15 and a screw nut, the screw rod 12 extends to the other side of the lifting platform 3 after passing through the through hole a of the upper limit plate 11 and the screw nut, the lifting platform 3 is provided with a through hole b after passing through the opening of the rectangular frame horizontally, and the lifting platform 3 is fixed by the front fixing device 8, further comprising a fixture 5, the fixture 5 comprises a handle and a chuck, and the handle is fixed to the valve core of the PV valve by the chuck after passing through the through hole b from bottom to top. Due to different types of tankers and sizes of PV valves, the lifting platform 3 can be adjusted in vertical direction by forward and reverse rotation of the screw rod 12, so as to adjust the vertical height position, and the horizontal position is determined by moving the valve seat on the base plate 7, so that the PV valves of various sizes and specifications can be accurately positioned and ground, and the repair of various valves is satisfied. In combination with Figures 1 to 8,The valve seat is placed on the base plate 7, the valve seat is pasted with sandpaper 24, the sand surface faces the valve core, the lifting screw 12 is rotated to drive the lifting platform 3 to the specified position, the front fixing device 8 locks the bolt 9 through the front fixing device 8 to fix the lifting platform 3; the chuck of the clamp 5 fixes the valve core; the handle is rotated to drive the valve core to rotate, and the abutting surface of the valve core and the valve seat can be ground. Conversely, the valve core is pasted with sandpaper 24, and the sand surface faces the valve seat, so that the abutting surface of the valve seat and the valve core can be ground. The grinding methods of various specifications of valve cores and valve seats are similar, the lifting platform 3 is moved up and down through the lifting screw 12 device, and only the tooling is adjusted.

[0028] Specifically, the chuck is U-shaped, and the two legs of the U-shaped chuck are inserted into the inner hole of the PV valve core to fix the valve core. This is suitable for the PV valve with a hole in the valve core.

[0029] Specifically, the chuck is U-shaped, and the two legs of the U-shaped chuck are welded on the PV valve core to fix the valve core. This is suitable for the PV valve without a hole in the valve core.

[0030] Specifically, the lifting platform is fixed with a motor 2, the motor output shaft assembly 4 is fixedly connected with the handle of the clamp 5, the motor 2 is powered by a cable connected with a matching power supply, and the motor 2 provides rotary kinetic energy to drive, which can save manpower.

[0031] Specifically, the motor 2 is a speed reducer, which realizes power reduction and torque increase to meet the torque and speed requirements of grinding.

[0032] Specifically, the motor 2 is connected with a control box 1 between the motor 2 and the power supply, and a frequency converter in the control box 1 is used to adjust the speed of the motor to realize fine speed control in the grinding process.

[0033] Specifically, the lower limit plate 17 is horizontally arranged at the lower end of the rectangular frame, the lower limit plate 17 is provided with a groove, the screw rod 12 is abutted into the groove, the screw rod 12 can be further fixed, and the balance of the screw rod 12 is maintained.

[0034] Specifically, the groove is provided with a bearing 16, and the screw rod 12 is fixedly connected with the inner wheel of the bearing 16, so that the rotating resistance of the screw rod 12 can be reduced.

[0035] Specifically, one end of the screw rod is provided with a hand wheel 10 above the upper limit plate, so that the screw rod 12 can be conveniently and comfortably operated.

[0036] The above description is only an exemplary embodiment of the present application, and is not used to limit the protection scope of the present application, and the protection scope of the present application is determined by the appended claims.

Claims

1. A PV valve grinding apparatus characterized by The utility model provides a PV valve core fixing device, including support mechanism, support mechanism includes 1 base plate (7), 1 rectangular frame, the rectangular frame is vertically fixed on the base plate (7) with short side, is equipped with upper limit pad (11) after being fixed, upper limit pad (11) is equipped with 1 through hole a, still including position adjusting mechanism, position adjusting mechanism includes 1 screw rod assembly, 1 lifting platform (3), lifting platform (3) is equipped with rear fixed device (15) with screw rod nut fixed, screw rod (12) passes through the through hole a of upper limit pad (11), screw rod nut extends to the other side of lifting platform (3) after, lifting platform (3) is equipped with 1 through hole b after passing through the opening of rectangular frame horizontally, is fixed by front fixed device (8), still including a clamp (5), the clamp (5) includes operating handle and chuck, handle passes through the through hole b from below to upwards, and the valve core of PV valve is fixed by chuck.

2. A PV valve grinding apparatus according to claim 1, wherein The chuck is U-shaped, and the two legs of the U-shaped chuck are inserted into the inner hole of the valve core of the PV valve to fix the valve core.

3. A PV valve grinding apparatus as defined in claim 1, wherein The chuck is U-shaped, and the two legs of the U-shaped chuck are welded on the valve core of the PV valve to fix the valve core.

4. A PV valve grinding apparatus according to claim 1, wherein The lifting platform is fixed with a motor (2), and the motor output shaft assembly (4) is fixedly connected with the handle of the clamp (5).

5. A PV valve grinding apparatus according to claim 4, wherein The motor (2) is a speed reduction motor.

6. A PV valve grinding apparatus as defined in claim 4, wherein The motor (2) is connected with a control box (1) between the motor (2) and the power supply.

7. A PV valve grinding apparatus as defined in claim 1, wherein The lower end of the rectangular frame is horizontally provided with a lower limit pad (17), the lower limit pad (17) is provided with a groove, and the screw rod (12) abuts into the groove.

8. A PV valve grinding apparatus according to claim 7, wherein The groove is provided with a bearing (16), and the screw rod (12) is fixedly connected with the inner wheel of the bearing (16).

9. The PV valve grinding apparatus of any of claims 1-8, wherein One end of the screw rod above the upper limit pad is provided with a hand wheel (10).

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