A sight glass valve

Abstract

The utility model provides a kind of sight glass valve, it is related to sight glass technical field.The utility model includes base, top seat is located at the top of base, observation mirror is located in base and top seat, valve seat is located at the bottom of base, sight glass cover is located below valve seat, connecting plate is connected with sight glass cover, the side portion of base is equipped with the drive assembly of transmission connection with connecting plate, the sliding contact of sight glass cover and valve seat, the valve seat is metal material, the edge of valve seat bottom is scraper design.The utility model avoids the wear between sight glass cover and mirror hole to cause sealing failure.

Description

Technical Field

[0001] This utility model relates to the field of sight glass technology, and specifically to a sight glass valve. Background Technology

[0002] A sight glass is a device used to observe the material inside containers and equipment. In the polysilicon production industry, the sight glass valve of the drum is manually controlled. When it is not necessary to check the equipment status, the sight glass hole is on the inside of the equipment and is covered by a sight glass cover. The sight glass cover is connected to the outside of the equipment by a shaft, and a handle is mounted on the shaft. Rotating the handle controls the sight glass cover to cover or move away from the sight glass hole.

[0003] The current sight glass control method increases the time and cost of manual on-site operation, and it cannot observe the condition of the drum surface in a timely manner. Furthermore, the current sight glass cover and sight glass hole are sealed with wool felt. After a period of use, repeated opening and closing of the sight glass cover will gradually wear down the wool felt sealing ring. As silica solids continue to accumulate on the surface of the sight glass cover, and cannot be cleaned up in time, the wear rate of the sight glass cover on the wool felt will be accelerated, causing the gap between the sight glass cover and the sight glass hole to increase continuously, resulting in seal failure. Utility Model Content

[0004] The purpose of this invention is to develop a sight glass valve that avoids sealing failure caused by wear between the sight glass cover and the sight hole.

[0005] This utility model is achieved through the following technical solution:

[0006] A sight glass valve, comprising:

[0007] Base;

[0008] Top seat, located on top of the base;

[0009] An observation mirror is located inside the base and top mount;

[0010] The valve seat is located at the bottom of the base;

[0011] The sight glass cover is located below the valve seat;

[0012] Connecting plate, which connects to the sight glass cover;

[0013] The base has a drive assembly that is connected to the connecting plate on its side. The sight glass cover slides in contact with the valve seat. The valve seat is made of metal and has a scraper design at the bottom edge.

[0014] Optionally, the drive assembly includes a double-acting-angle pneumatic head with a handwheel operating mechanism, the valve stem of the pneumatic head being connected to a connecting plate.

[0015] Optionally, a stuffing box is provided on the outside of the valve stem, and a stuffing gland that mates with the valve stem is provided inside the stuffing box. The stuffing gland and the stuffing box are sealed with a graphite ring, and the stuffing gland and the valve stem are sealed with a low-leakage graphite packing assembly. The packing gland bolts at the top of the stuffing gland are tightened with a disc spring.

[0016] Optionally, a sealing ring is provided between the contact surfaces of the valve seat and the base.

[0017] Optionally, the valve seat has a first flange around its top outer edge, a pressure ring connected to the base is provided on the outer side of the valve seat, and a second flange that mates with the first flange is provided on the bottom outer edge of the pressure ring.

[0018] Optionally, the base has a third flange around its bottom outer edge, and a split ring is provided on the outer side of the base above the third flange, the split ring being connected to the pressure ring screw.

[0019] Optionally, a connecting assembly is provided between the connecting plate and the sight glass cover. The connecting assembly includes a connecting plate connected to the connecting plate, and a fixing ring that mates with the connecting plate is screwed to the bottom of the sight glass cover.

[0020] Optionally, the connecting plate is located inside the fixing ring, and the bottom inner edge of the fixing ring is provided with a fourth flange that mates with the connecting plate, the inner diameter of the fourth flange being smaller than the inner diameter of the connecting plate.

[0021] Optionally, a disc spring is provided between the connecting plate and the sight glass cover.

[0022] Optionally, the bottom of the connecting plate is provided with a connecting screw, which is threadedly connected to the connecting plate, and the bottom of the connecting plate is provided with an adjusting nut that is threadedly engaged with the connecting screw.

[0023] The beneficial effects of this utility model are:

[0024] This invention allows for remote control of the opening and closing of the sight glass cover via a pneumatic head, eliminating the need for manual operation. When used in conjunction with a monitoring camera, it enables real-time viewing of the internal condition of the drum. The metal valve seat features a scraper design, which, during the swinging of the sight glass cover, works in conjunction with the valve seat to scrape away the silica solids accumulated on the top sealing surface of the sight glass cover, maintaining the seal between the sight glass cover and the valve seat. This significantly reduces the wear rate of the valve seat and ensures a long-lasting seal. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural diagram of the present utility model.

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0028] Reference numerals: 1. Base; 2. Top seat; 3. Sight glass; 4. Valve seat; 5. Sight glass cover; 6. Retaining ring; 7. Connecting plate; 8. Connecting block; 9. Connecting plate; 10. Connecting screw; 11. Adjusting nut; 12. Valve stem; 13. Stuffing box; 14. Stuffing gland; 15. Pneumatic head; 16. Pressure ring; 17. Split ring; 18. Sealing ring. Detailed Implementation

[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, this utility model discloses a sight glass valve, which is installed on the equipment and has a matching monitoring camera on the side. The monitoring camera can view the internal situation of the equipment through the sight glass valve.

[0033] The sight glass valve includes a base 1, which is connected to the equipment. A top seat 2 is connected to the top of the base 1. The inner circumferential walls of the base 1 and the top seat 2 are coaxial, and an observation mirror 3 is provided on each inner circumferential wall.

[0034] The bottom of the base 1 is provided with a valve seat 4, and a sealing ring 18 is provided between the contact surface of the valve seat 4 and the base 1. The valve seat 4 is made of hard metal.

[0035] The valve seat 4 has a first flange around its top outer edge, a pressure ring 16 around its outer side, a second flange around its bottom outer edge that mates with the first flange, and a third flange around its bottom outer edge. A split ring 17 is located on the outer side of the base 1 above the third flange and is screwed to the pressure ring 16. After the pressure ring 16 and the split ring 17 are screwed together, the valve seat 4 is pressed and fixed to the bottom of the base 1.

[0036] The bottom of the valve seat 4 is provided with a sight glass cover 5, which slides in contact with the valve seat 4. The bottom edge of the valve seat 4 is designed with a scraper. When the sight glass cover 5 slides into the bottom of the valve seat 4, the valve seat 4 can effectively scrape off the silica solid accumulated on the top sealing surface of the sight glass cover 5.

[0037] The bottom of the sight glass cover 5 is provided with a connecting plate 9. The equipment on the side of the base 1 is provided with a drive component that is connected to the connecting plate 9. The drive component drives the connecting plate 9 to swing, and the connecting plate 9 drives the sight glass cover 5 to swing, so that the sight glass cover 5 covers the bottom of the valve seat 4 to close the observation mirror 3 or detaches from the bottom of the valve seat 4 to open the observation mirror 3.

[0038] A connecting assembly is provided between the connecting plate 9 and the sight glass cover 5. The connecting assembly includes a fixing ring 6 that is connected to the bottom screw of the sight glass cover 5. A connecting plate 7 is provided inside the fixing ring 6. A disc spring is provided between the connecting plate 7 and the sight glass cover 5. A fourth flange that mates with the connecting plate 7 is provided on the bottom inner edge of the fixing ring 6. The inner diameter of the fourth flange is smaller than the inner diameter of the connecting plate 7.

[0039] The bottom of the connecting plate 7 is provided with a connecting block 8 that passes through the fourth flange. The bottom of the connecting block 8 is provided with a connecting screw 10, which is threadedly connected to the connecting plate 9. The bottom of the connecting plate 9 is provided with an adjusting nut 11 that is threadedly engaged with the connecting screw 10. The height of the connecting plate 7 on the connecting plate 9 can be adjusted by the connecting screw 10 and the adjusting nut 11, thereby adjusting the height of the sight glass cover 5.

[0040] The drive assembly includes a double-acting angle stroke (0~90°) pneumatic head 15 installed on the equipment, which has a handwheel operating mechanism. The valve stem 12 of the pneumatic head 15 is connected to the connecting plate 9. The equipment is provided with a stuffing box 13 that mates with the valve stem 12. The stuffing box 13 contains a stuffing gland 14 that mates with the valve stem 12. The stuffing gland 14 and the stuffing box 13 are sealed with a graphite ring. The stuffing gland 14 and the valve stem 12 are sealed with a low-leakage graphite packing group. The packing gland bolts at the top of the stuffing gland 14 are tightened by a disc spring.

[0041] This invention allows for remote control of the opening and closing of the sight glass cover 5 via a pneumatic head 15, eliminating the need for manual operation. When used in conjunction with a monitoring camera, it enables real-time viewing of the internal condition of the drum. The metal valve seat 4 features a scraper design, which, during the swinging process of the sight glass cover 5, works in conjunction with the valve seat 4 to scrape away the silica solids accumulated on the top sealing surface of the sight glass cover 5, maintaining the seal between the sight glass cover 5 and the valve seat 4. This significantly reduces the wear rate of the valve seat 4 and ensures a long-lasting seal.

[0042] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A sight glass valve, characterized in that, include: Base; Top seat, located on top of the base; An observation mirror is located inside the base and top mount; The valve seat is located at the bottom of the base; The sight glass cover is located below the valve seat; Connecting plate, which connects to the sight glass cover; The base has a drive assembly that is connected to the connecting plate on its side. The sight glass cover slides in contact with the valve seat. The valve seat is made of metal and has a scraper design at the bottom edge.

2. The sight glass valve according to claim 1, characterized in that, The drive assembly includes a double-acting-angle pneumatic head with a handwheel operating mechanism, and the valve stem of the pneumatic head is connected to a connecting plate.

3. The sight glass valve according to claim 2, characterized in that, A stuffing box is provided on the outside of the valve stem, and a stuffing gland that mates with the valve stem is provided inside the stuffing box. The stuffing gland and the stuffing box are sealed with a graphite ring, and the stuffing gland and the valve stem are sealed with a low-leakage graphite packing assembly. The stuffing gland cover bolts at the top of the stuffing gland are tightened with disc springs.

4. The sight glass valve according to claim 1, characterized in that, A sealing ring is provided between the contact surfaces of the valve seat and the base.

5. The sight glass valve according to claim 1, characterized in that, The valve seat has a first flange around its top outer edge, a pressure ring connected to the base on its outer side, and a second flange that mates with the first flange around its bottom outer edge.

6. The sight glass valve according to claim 5, characterized in that, The base has a third flange around its bottom outer edge, and a split ring is provided on the outer side of the base above the third flange. The split ring is connected to the pressure ring screw.

7. The sight glass valve according to claim 1, characterized in that, A connecting assembly is provided between the connecting plate and the sight glass cover. The connecting assembly includes a connecting plate that is connected to the connecting plate, and a fixing ring that mates with the connecting plate is screwed to the bottom of the sight glass cover.

8. The sight glass valve according to claim 7, characterized in that, The connecting plate is located inside the fixing ring. The bottom inner edge of the fixing ring is provided with a fourth flange that mates with the connecting plate. The inner diameter of the fourth flange is smaller than the inner diameter of the connecting plate.

9. The sight glass valve according to claim 8, characterized in that, A disc spring is provided between the connecting plate and the sight glass cover.

10. The sight glass valve according to claim 7, characterized in that, The bottom of the connecting plate is provided with a connecting screw, which is threadedly connected to the connecting plate. The bottom of the connecting plate is provided with an adjusting nut that is threadedly engaged with the connecting screw.

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