Pressure sealing pressing plate seat

Abstract

The utility model discloses a pressure sealing pressing plate seat which comprises a valve cover, a packing pad is fixedly connected to the inner bottom face of the valve cover, packing is movably connected to the upper surface of the packing pad, a sealing ring is movably connected to the top face of the packing, and a baffle ring is fixedly connected to the side face of the top end of the valve cover. And the outer side surface of the valve cover is slidably sleeved with a pressing plate seat, the upper surface of the sealing ring is movably connected with a filler pressing sleeve, and the top surface of the filler pressing sleeve is fixedly connected with a filler pressing plate. The sealing ring is arranged at the top end of the filler, the sealing effect is improved, leakage can be effectively prevented, the valve deck and the pressing plate base are connected in a sliding and sleeving mode, the pressing plate base and the filler pressing plate are connected through the bolt and the nut, connection is firm, and the connection reliability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure plate seats, and in particular relates to a pressure sealing pressure plate seat. Background Art

[0002] The pressure seal plate seat is a sealing component used in high-pressure environments. It is mainly made of high-strength corrosion-resistant materials. The pressure plate is fixed by bolts to apply uniform pressure to deform the sealing element to achieve sealing. It is widely used in petrochemical, natural gas, nuclear power and other fields. The technical development trends include material innovation, structural optimization and intelligent monitoring.

[0003] The existing patent for "a pressure sealing pressure plate seat" with publication number "CN205118422U" includes a valve cover, a packing pad, a packing, a pressure plate seat, a packing sleeve, a packing pressure plate, a nut and a stud. The packing is connected inside the valve cover, and the upper part of the packing is a packing pressure plate. The packing pressure plate is provided with a through hole. The two sides of the valve cover are respectively connected to the pressure plate seat by threads. The pressure plate seat is provided with connecting holes. Studs are connected between the through holes and the connecting holes. A nut is provided on the top of the stud. It is assembled with the valve cover through its own internal thread, which is convenient for processing and assembly, and has low cost of use.

[0004] The pressure seal plate seat is not sealed at the top of the packing, which is prone to leakage. The valve cover and the plate seat are connected by threads, which may become loose due to vibration or thermal expansion and contraction, affecting the reliability of the connection. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the top of the packing is not sealed and is prone to leakage and the connection reliability between the valve cover and the pressure plate seat is low, and proposes a pressure sealing pressure plate seat.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A pressure sealing pressure plate seat comprises a valve cover, wherein the inner bottom surface of the valve cover is fixedly connected with a packing pad, the upper surface of the packing pad is movably connected with a packing, the top surface of the packing is movably connected with a sealing ring, the top side surface of the valve cover is fixedly connected with a retaining ring, the outer surface of the valve cover is slidably sleeved with a pressure plate seat, the upper surface of the sealing ring is movably connected with a packing press sleeve, the top surface of the packing press sleeve is fixedly connected with a packing pressure plate, bolt holes are provided on the pressure plate seat and the packing pressure plate, the pressure plate seat and the packing pressure plate are movably connected with bolts through the bolt holes, and the ends of the bolts above the packing pressure plate are threadedly connected with nuts.

[0008] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: there are four groups of bolt holes, bolts and nuts, which are distributed in a circular array on the pressure plate seat and the packing pressure plate.

[0009] In order to better achieve the above purpose, the utility model adopts a further technical solution: the centers of the valve cover, packing pad, sealing ring, packing sleeve and packing pressure plate are connected by a through hole, and a central axis is movably connected in the through hole.

[0010] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the outer diameter of the pressure plate seat is greater than the outer diameter of the retaining ring, and the pressure plate seat is located below the retaining ring.

[0011] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the outer diameters of the packing gland and the sealing ring are the same as the inner diameter of the valve cover.

[0012] The utility model has the advantages that a sealing ring is provided at the top end of the packing, thereby improving the sealing effect and effectively preventing leakage; a sliding sleeve connection is adopted between the valve cover and the pressure plate seat, and the pressure plate seat and the packing pressure plate are connected by bolts and nuts, and the connection is tightened, thereby improving the connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a pressure sealing plate seat proposed by the utility model;

[0014] Figure 2 A schematic front view of a pressure sealing plate seat proposed by the utility model;

[0015] Figure 3 The utility model is a cross-sectional schematic diagram of a pressure sealing plate seat.

[0016] In the figure: 1 valve cover, 2 packing gasket, 3 packing, 4 sealing ring, 5 retaining ring, 6 pressure plate seat, 7 packing sleeve, 8 packing pressure plate, 9 bolts, 10 nuts, 11 center shaft. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Reference Figure 1-Figure 3As shown, a pressure sealing plate seat comprises a valve cover 1, a packing pad 2 is fixedly connected to the inner bottom surface of the valve cover 1, the packing pad 2 is a flat gasket, suitable for the plane connection of the device, the material used for the packing pad 2 is flexible graphite, which has excellent high temperature resistance, corrosion resistance and self-lubricating properties, and is suitable for high temperature and high pressure environments. The packing pad 2 plays a protective role, the upper surface of the packing pad 2 is movably connected to a packing 3, and the top surface of the packing 3 is movably connected to a sealing ring 4. The material used for the sealing ring 4 is nitrile rubber, which has good oil resistance, wear resistance and elasticity, and is suitable for The sealing ring 4 is used for high-pressure work of the device, and the packing 3 is sealed in the valve cover 1, which improves the sealing performance of the device and can effectively prevent leakage. The top side of the valve cover 1 is fixedly connected with a retaining ring 5, and the outer surface of the valve cover 1 is slidably sleeved with a pressure plate seat 6. The outer diameter of the pressure plate seat 6 is larger than the outer diameter of the retaining ring 5, so as to leave space for opening bolt holes. The pressure plate seat 6 is located below the retaining ring 5. The retaining ring 5 is used to limit the pressure plate seat 6 to prevent the pressure plate seat 6 from being detached. The upper surface of the sealing ring 4 is movably connected with a packing gland 7. The outer diameters of the packing gland 7 and the sealing ring 4 are consistent with the valve The inner diameters of the valve cover 1 are the same, so that the packing sleeve 7 can be pressed into the valve cover 1 and can slide along the inner wall of the valve cover 1. The top surface of the packing sleeve 7 is fixedly connected with a packing pressure plate 8; bolt holes are provided on the pressure plate seat 6 and the packing pressure plate 8, and the pressure plate seat 6 and the packing pressure plate 8 are movably connected with bolts 9 through the bolt holes. The bolts 9 are hexagonal bolts, and the upper part of the bolts 9 is provided with threads. The nut at the lower end of the bolt 9 supports the lower surface of the pressure plate seat 6, and the end of the bolt 9 located above the packing pressure plate 8 is threadedly connected with a nut 10, and the nut 10 is a hexagonal bolt that matches the bolt 9. Angle nuts and nuts 10 play the role of fastening the connection. There are four groups of bolt holes, bolts 9 and nuts 10, which are distributed in a circular array on the pressure plate seat 6 and the packing pressure plate 8. The centers of the valve cover 1, packing gasket 2, sealing ring 4, packing sleeve 7 and packing pressure plate 8 are connected by a through hole, and a central axis 11 is movably connected in the through hole. A clearance fit is adopted between the central axis 11 and the through hole. A sliding sleeve connection is adopted between the valve cover 1 and the pressure plate seat 6, and the pressure plate seat 6 and the packing pressure plate 8 are connected by bolts 9 and nuts 10. The connection is tight, which improves the connection reliability.

[0019] When the utility model is working, the pressure plate seat 6 is slidably sleeved on the valve cover 1, and is connected with the packing pressure plate 8 by bolts 9 and nuts 10. The nuts 10 play the role of fastening connection. A retaining ring 5 is provided on the pressure plate seat 6 and is fixedly connected to the top of the valve cover 1, which can prevent the pressure plate seat 6 from being detached during the continuous tightening of the nut 10. This connection method improves the connection reliability. A sealing ring 4 is provided on the top of the packing 3 to seal the packing 3 in the valve cover 1, thereby improving the sealing performance and effectively preventing leakage. The packing sleeve 7 is fixedly connected to the packing pressure plate 8, which simplifies the assembly process and reduces potential leakage points.

Claims

1. A pressure sealing plate seat, comprising a valve cover (1), characterized in that: The inner bottom surface of the valve cover (1) is fixedly connected to a packing pad (2), the upper surface of the packing pad (2) is movably connected to a packing (3), the top surface of the packing (3) is movably connected to a sealing ring (4), the top side surface of the valve cover (1) is fixedly connected to a retaining ring (5), the outer surface of the valve cover (1) is slidably sleeved with a pressure plate seat (6), the upper surface of the sealing ring (4) is movably connected to a packing pressing sleeve (7), the top surface of the packing pressing sleeve (7) is fixedly connected to a packing pressing plate (8), the pressure plate seat (6) and the packing pressing plate (8) are both provided with bolt holes, the pressure plate seat (6) and the packing pressing plate (8) are movably connected to a bolt (9) through the bolt hole, and the end of the bolt (9) located above the packing pressing plate (8) is threadedly connected to a nut (10).

2. A pressure sealing plate seat according to claim 1, characterized in that: There are four groups of bolt holes, bolts (9) and nuts (10), which are distributed in a circular array on the pressure plate seat (6) and the packing pressure plate (8).

3. A pressure sealing plate seat according to claim 1, characterized in that: The valve cover (1), the packing gasket (2), the sealing ring (4), the packing pressing sleeve (7) and the packing pressing plate (8) are connected to each other via a through hole at their centers, and a central shaft (11) is movably connected in the through hole.

4. A pressure sealing plate seat according to claim 1, characterized in that: The outer diameter of the pressure plate seat (6) is greater than the outer diameter of the retaining ring (5), and the pressure plate seat (6) is located below the retaining ring (5).

5. A pressure sealing plate seat according to claim 1, characterized in that: The outer diameters of the packing gland (7) and the sealing ring (4) are the same as the inner diameter of the valve cover (1).

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