High-vacuum stainless steel kettle bottom emptying valve

Abstract

The utility model discloses a high-vacuum stainless steel kettle bottom emptying valve which comprises a valve body and a valve rod, a valve core is arranged in the valve body, a connecting plate and a sealing pressing plate are respectively arranged at the upper end and the lower end of the valve body, a pressing plate is arranged at the lower end of the valve core, and a discharging pipe communicated with the valve body is arranged on one side of the valve body. The valve has the advantages of being simple in structure, easy to assemble, simple, free of leakage, suitable for various complex working conditions, not prone to damage of the sealing ring, easy to replace even if the sealing ring is abraded after working for a long time, and low in maintenance cost, and the valve is sealed in a multi-section mode through the sealing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of kettle bottom discharge valves, in particular to a high vacuum stainless steel kettle bottom discharge valve. Background Art

[0002] Conventional forms of kettle bottom discharge valves include upward expansion type, downward expansion type, combined ball valve, etc. They are large in size and have space requirements for valve opening and closing. The pressure bearing capacity of various valves is not the same, which makes it difficult to apply to complex working conditions. The valve structure is complicated, with many components and complex connections. It is difficult to process and assemble, and the cost is high.

[0003] The existing bottom discharge valve has the following defects: 1. The structure is complicated and there are many components, resulting in complex connection relationships; 2. The complex structure makes assembly difficult and there are tiny leakage points, which is difficult to meet the requirements of high pressure working conditions and has high maintenance costs; 3. The overall structure of the valve is large, which requires a lot of space on the assembly site and increases the difficulty of operation. Utility Model Content

[0004] The utility model aims to provide a high vacuum stainless steel kettle bottom discharge valve to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a high vacuum stainless steel kettle bottom discharge valve, comprising a valve body and a valve stem, wherein a valve core is arranged in the valve body, a connecting plate and a sealing pressure plate are arranged at the upper and lower ends of the valve body respectively, a pressure plate is arranged at the lower end of the valve core, and a discharge pipe connected to the valve body is arranged on one side of the valve body.

[0007] Furthermore, the valve stem is located in the inner cavity of the valve body, and the upper end of the valve stem is connected to the valve core through the pressure plate, and the lower end of the valve stem is provided with an external thread.

[0008] Furthermore, a groove matching the valve stem is formed at the lower end of the valve core, bolt holes are formed on both sides of the groove, and the valve core is fixedly connected to the pressure plate through the bolt holes.

[0009] Furthermore, a U-shaped hole is formed on the pressure plate, and an inner diameter of the U-shaped hole is smaller than an outer diameter of the valve stem.

[0010] Furthermore, the upper end of the valve body has a boss 1, the lower end of the valve body is provided with a mounting groove, a sealing filler is provided in the mounting groove, and the valve stem passes through the mounting groove.

[0011] Furthermore, a center hole is formed on the connecting plate, and the boss 1 is clamped and connected to the center hole.

[0012] Furthermore, a second boss is provided on the upper end of the sealing pressure plate, and the second boss is matched and connected with the mounting groove.

[0013] Beneficial effects: The utility model provides a high vacuum stainless steel kettle bottom discharge valve with simple structure and simple assembly. The valve utilizes a sealing ring for multi-stage sealing, which is simple and leak-free. It is suitable for a variety of complex working conditions and the sealing ring is not easily damaged. Even if the sealing ring is worn after working for a long time, it is easy to replace and the maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the utility model.

[0016] Reference numerals

[0017] 1-valve body, 11-boss one, 12-installation groove, 2-valve stem, 3-valve core, 31-groove, 32-bolt hole, 4-connecting plate, 41-center hole, 5-sealing pressure plate, 51-boss two, 6-pressure plate, 7-discharge pipe, 8-sealing packing. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] Example

[0020] like Figure 1-2 As shown, a high vacuum stainless steel kettle bottom discharge valve comprises a valve body 1 and a valve stem 2. A valve core 3 is arranged in the valve body 1. A connecting plate 4 and a sealing pressure plate 5 are arranged at the upper and lower ends of the valve body 1 respectively. A pressure plate 6 is arranged at the lower end of the valve core 3. A discharge pipe 7 connected to the valve body 1 is arranged on one side.

[0021] In the first embodiment, the valve stem 2 is located in the inner cavity of the valve body 1, and the upper end of the valve stem 2 is connected to the valve core 3 through the pressure plate 6. The lower end of the valve stem 2 is provided with an external thread, and the lower end of the valve core 3 is provided with a groove 31 matching the valve stem 2. Bolt holes 32 are provided on both sides of the groove 31. The valve core 3 is fixedly connected to the pressure plate 6 through the bolt holes 32. The valve stem 2 rises and falls by rotating the thread, and the valve core 3 rises and falls accordingly and will not fall off. The valve body 1 has a guide inside to assist the valve core 3 to penetrate into the valve body 1. The gap between the valve core 3 and the valve body 1 is very small, which can effectively solve the residual problem. There are sealing rings on both sides of the top of the valve core 3, and the matching plane of the valve core 3 and the valve body 1 also has sealing rings. The pressure requirements are guaranteed by multiple seals. A U-shaped hole is provided on the pressure plate 6, and the inner diameter of the U-shaped hole is smaller than the outer diameter of the valve stem 2 to ensure that the valve stem 2 cannot fall off.

[0022] In the second embodiment, the upper end of the valve body 1 is provided with a boss 11, the lower end of the valve body 1 is provided with a mounting groove 12, a sealing packing 8 is arranged in the mounting groove 12, the valve stem 2 is arranged through the mounting groove 12, a center hole 41 is provided on the connecting plate 4, the boss 11 and the center hole 41 are clamped and connected with each other, the upper end of the sealing pressure plate 5 is provided with a boss 2 51, the boss 2 51 is matched and connected with the mounting groove 12, the boss 11 at the upper end of the valve body 1 is extended into the center hole 41 on the connecting plate 4 for installation, and is fixedly connected by bolts, the boss 2 51 at the upper end of the sealing pressure plate 5 is extended into the mounting groove 12 at the bottom of the valve body 1 for installation, the outer ring is provided with a bolt connection hole for fixing, and the sealing packing 8 filled inside is squeezed, the sealing packing 8 is pressed by the sealing pressure plate 5 in the mounting groove 12 of the valve body 2, the compression compensation amount is supplemented by the sealing packing 8, so as to realize the close fit between the valve stem 2 and the sealing packing 8, and the center of the sealing pressure plate 5 has an internal thread, which matches the external thread at the bottom of the valve stem 2 to realize the threaded connection.

[0023] In the third embodiment, the connection port of the discharge pipe 7 can be a quick-release interface, a flange interface, a threaded interface, a pipe mouth, etc. The discharge pipe 7 is horizontal or inclined with the inner cavity of the valve body 1 to reduce material accumulation in the inner cavity of the valve body 1.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the utility model content within the protection scope of the utility model.

Claims

1. A high vacuum stainless steel kettle bottom discharge valve, comprising a valve body (1) and a valve stem (2), characterized in that: A valve core (3) is provided in the valve body (1), a connecting plate (4) and a sealing pressure plate (5) are provided at the upper and lower ends of the valve body (1), a pressure plate (6) is provided at the lower end of the valve core (3), and a discharge pipe (7) connected to the valve body (1) is provided on one side.

2. A high vacuum stainless steel kettle bottom discharge valve according to claim 1, characterized in that: The valve stem (2) is located in the inner cavity of the valve body (1), and the upper end of the valve stem (2) is connected to the valve core (3) via the pressure plate (6), and the lower end of the valve stem (2) is provided with an external thread.

3. A high vacuum stainless steel kettle bottom discharge valve according to claim 1, characterized in that: The lower end of the valve core (3) is provided with a groove (31) matching the valve stem (2), and bolt holes (32) are provided on both sides of the groove (31). The valve core (3) is fixedly connected to the pressure plate (6) through the bolt holes (32).

4. A high vacuum stainless steel kettle bottom discharge valve according to claim 1, characterized in that: The pressure plate (6) is provided with a U-shaped hole, and the inner diameter of the U-shaped hole is smaller than the outer diameter of the valve stem (2).

5. The high vacuum stainless steel kettle bottom discharge valve according to claim 1, characterized in that: The upper end of the valve body (1) is provided with a boss (11), the lower end of the valve body (1) is provided with a mounting groove (12), a sealing filler (8) is provided in the mounting groove (12), and the valve stem (2) is arranged to pass through the mounting groove (12).

6. A high vacuum stainless steel kettle bottom discharge valve according to claim 5, characterized in that: The connecting plate (4) is provided with a center hole (41), and the boss 1 (11) and the center hole (41) are clamped and connected to each other.

7. A high vacuum stainless steel kettle bottom discharge valve according to claim 5, characterized in that: A second boss (51) is provided at the upper end of the sealing pressure plate (5), and the second boss (51) is matched and connected with the mounting groove (12).

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