Vacuum baffle valve with high sealing performance

Abstract

The vacuum baffle valve with the high sealing performance comprises a valve body, a valve rod is arranged at the top of the valve body, a connecting sleeve is fixedly connected to the top of the valve rod, a connecting base is fixedly connected to the bottom of the valve body, a connecting opening is formed in the right side of the valve body, a movable sleeve is movably connected to the surface of the connecting opening, and the movable sleeve is fixedly connected to the right side of the valve body. Clamping frames are movably connected to the front side and the rear side of the side, away from the valve body, of the movable sleeve, fixing pieces are fixedly connected to the tops of the clamping frames, and nuts are fixedly connected to the front faces of the fixing pieces. The corrosion-resistant layer, the strengthening layer and the copper alloy are good in corrosion resistance and heat conductivity, stable performance can be kept in the environment with high corrosivity, a layer of hard material is overlaid on the valve body, high abrasion resistance and abrasion resistance are provided, and the corrosion-resistant valve is particularly suitable for occasions where the medium temperature rises and the valve is dry, and the service life of the corrosion-resistant valve is prolonged. The purpose of improving the use strength and the corrosion resistance of the vacuum baffle valve is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum baffle valves, in particular to a vacuum baffle valve with high sealing performance. Background Art

[0002] Manual vacuum flapper valve is a valve used in vacuum system. Its main features are manual operation and suitability for vacuum environment. This valve is usually made of stainless steel, has good corrosion resistance and high temperature resistance, and can work stably under certain temperature and pressure environment.

[0003] For example, the Chinese utility model provides a "high vacuum flapper valve with double sealing performance" patent number: CN201811443605.2, which includes a cylinder, a flapper valve body, and a seal installed on the flapper valve body and sleeved on the valve stem of the cylinder, and a seal for connecting the cylinder and the flapper valve body, realizing a double sealing form of valve stem mechanical seal and lubricating oil seal, so that the leakage rate of the valve body and valve seat is reduced, the vacuum pumping time of the system is shortened, and the production efficiency is improved;

[0004] Although the above document solves the problem that the existing high vacuum baffle valve is easily contaminated by chlorine and dust impurities in the vacuum pipeline, and the sealing performance of the contaminated valve stem decreases with the increase in the number of uses, thus affecting normal production, it still has the disadvantages of unsatisfactory strength of use and corrosion resistance. During long-term use, due to the special use environment of the vacuum baffle valve, the unsatisfactory strength of use and corrosion resistance will seriously reduce the service life of the vacuum baffle valve. For this reason, a vacuum baffle valve with high sealing performance is introduced here. Utility Model Content

[0005] The utility model aims to provide a vacuum baffle valve with high sealing performance and long service life.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a vacuum baffle valve with high sealing performance, comprising a valve body, a valve stem is arranged on the top of the valve body, a connecting sleeve is fixedly connected to the top of the valve stem, a connecting base is fixedly connected to the bottom of the valve body, a connecting port is arranged on the right side of the valve body, a movable sleeve is movably connected to the surface of the connecting port, a clamping frame is movably connected to the front and rear sides of the movable sleeve away from the valve body, a fixing plate is fixedly connected to the top of the clamping frame, a nut is fixedly connected to the front side of the fixing plate, a fastening bolt is threadedly connected to the inner cavity of the nut, the valve body comprises a base layer, a high temperature resistant layer is fixedly connected to the inner surface of the base layer, an anti-corrosion layer is fixedly connected to the outer surface of the base layer, and a strengthening layer is fixedly connected to the outer surface of the anti-corrosion layer.

[0007] As a preferred solution, a valve wheel is fixedly connected to the top of the connecting sleeve, and an anti-slip groove is provided on the surface of the valve wheel.

[0008] As a preferred solution, one side of the movable sleeve is movably connected with an adjusting disk, and the surface of the adjusting disk is provided with anti-slip grooves.

[0009] As a preferred solution, the inner wall of the movable sleeve is provided with an internal thread, and the surface of the connecting port is provided with an external thread matching the internal thread.

[0010] As a preferred solution, the material of the base layer is special stainless steel, and the material of the high temperature resistant layer is high temperature ceramic.

[0011] As a preferred solution, the material of the corrosion-resistant layer is copper alloy, and the material of the strengthening layer is cemented carbide.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model uses an anti-corrosion layer and a strengthening layer. The copper alloy, due to its good corrosion resistance and thermal conductivity, can maintain stable performance in a highly corrosive environment. A layer of hard material is welded on the valve body to provide high wear resistance and abrasion resistance. It is especially suitable for occasions where the medium temperature is increased and dry, thereby achieving the purpose of improving the use strength and corrosion resistance of the vacuum baffle valve.

[0014] 2. The utility model inserts the external pipe connection end into the connection port through a movable sleeve, a clamping frame, a fixing plate, a nut and a fastening bolt, rotates the movable sleeve, and the movable sleeve drives the two clamping frames to move and wrap around the connection, and screws the fastening bolt. The surface of the fastening bolt rotates in the nut, so that the two fixing plates and the clamping frames at the bottom thereof are close to each other, thereby improving the sealing of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the valve body of the utility model;

[0018] Figure 4 For this utility model Figure 1 A local enlarged schematic diagram of point A in the middle.

[0019] In the figure: 1. valve body; 2. valve stem; 3. connecting sleeve; 4. connecting base; 5. connecting port; 6. movable sleeve; 7. clamping frame; 8. fixing plate; 9. nut; 10. fastening bolt; 101. base layer; 102. high temperature resistant layer; 103. anti-corrosion layer; 104. strengthening layer; 11. valve wheel; 12. adjusting disk. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] Embodiment 1:

[0023] See also Figure 1-Figure 4 As shown, the utility model provides a vacuum baffle valve with high sealing performance, including a valve body 1, a valve stem 2 is arranged on the top of the valve body 1, a connecting sleeve 3 is fixedly connected to the top of the valve stem 2, a connecting base 4 is fixedly connected to the bottom of the valve body 1, a connecting port 5 is arranged on the right side of the valve body 1, a movable sleeve 6 is movably connected to the surface of the connecting port 5, a clamping frame 7 is movably connected to the front and rear sides of the movable sleeve 6 away from the valve body 1, a fixing plate 8 is fixedly connected to the top of the clamping frame 7, a nut 9 is fixedly connected to the front of the fixing plate 8, a fastening bolt 10 is threadedly connected to the inner cavity of the nut 9, the valve body 1 includes a base layer 101, a high temperature resistant layer 102 is fixedly connected to the inner surface of the base layer 101, an anti-corrosion layer 103 is fixedly connected to the outer surface of the base layer 101, a strengthening layer 104 is fixedly connected to the outer surface of the anti-corrosion layer 103,

[0024] The present technical solution employs an anti-corrosion layer 103, a strengthening layer 104, a movable sleeve 6, a clamping frame 7, a fixing plate 8, a nut 9 and a fastening bolt 10, so as to improve the anti-corrosion performance and the use strength of the vacuum baffle valve by means of protective layers of different materials, and to improve the sealing performance of the connection between the vacuum baffle valve connection port 5 and the external pipe connection end by means of a compression structure.

[0025] Embodiment 2:

[0026] On the basis of embodiment 1, the present invention is as follows Figure 1-Figure 3As shown, it is disclosed that the top of the connecting sleeve 3 is fixedly connected to a valve wheel 11, the surface of the valve wheel 11 is provided with an anti-skid groove, one side of the movable sleeve 6 is movably connected to an adjusting disk 12, the surface of the adjusting disk 12 is provided with anti-skid patterns, the inner wall of the movable sleeve 6 is provided with an internal thread, and the surface of the connecting port 5 is provided with an external thread that matches the internal thread.

[0027] The above technical solution is adopted mainly to facilitate the rotation of the valve stem 2, to facilitate the pushing of the movable sleeve 6 and to limit the movable sleeve 6. The personnel hold the valve wheel 11 by hand and turn the valve wheel 11 with force. The valve wheel 11 will drive the valve stem 2 at its bottom to rotate and turn the adjusting disk 12. As the adjusting disk 12 rotates, the movable sleeve 6 rotates on the connecting port 5. Through the cooperation of the internal thread and the external thread, the movable sleeve 6 drives the two clamping frames 7 to move.

[0028] Embodiment three:

[0029] On the basis of the second embodiment, the present invention is as follows Figure 1-Figure 3 As shown, it is disclosed that the material of the base layer 101 is special stainless steel, the material of the high temperature resistant layer 102 is high temperature ceramic, the material of the corrosion resistant layer 103 is copper alloy, and the material of the strengthening layer 104 is hard alloy.

[0030] The above technical scheme is adopted mainly to achieve the purpose of improving the use strength, corrosion resistance and high temperature resistance of the vacuum baffle valve. Through the anti-corrosion layer 103 and the strengthening layer 104, the copper alloy, due to its good corrosion resistance and thermal conductivity, can maintain stable performance in a highly corrosive environment. A layer of hard material is welded on the valve body 1 to provide high wear resistance and abrasion resistance, which is particularly suitable for occasions where the medium temperature is increased and dry. High-temperature ceramics have extremely high high temperature resistance and corrosion resistance, and are suitable for ultra-high temperature and corrosive medium environments.

[0031] The working principle of the utility model is: turn on the power switch of the vacuum pump, open the baffle valve, evacuate the system, check the vacuum values ​​of the main gas path and the branch channel, ensure that the vacuum degree required by the experiment is reached, connect the connecting port 5 with the pipeline connecting end, rotate the movable sleeve 6, and the movable sleeve 6 drives the two clamping frames 7 to move and wrap around the connection, screw the fastening bolt 10, and the surface of the fastening bolt 10 rotates in the nut 9, so that the two fixing plates 8 and the clamping frames 7 at the bottom thereof are close to each other until the two clamping frames 7 clamp the connection. During the use of the vacuum baffle valve, through the anti-corrosion layer 103 and the strengthening layer 104, the copper alloy, due to its good corrosion resistance and thermal conductivity, can maintain stable performance in a highly corrosive environment, and a layer of hard material is welded on the valve body 1 to provide high wear resistance and abrasion resistance, which is particularly suitable for occasions where the medium temperature is increased and dry. The high-temperature ceramic has extremely high high-temperature resistance and corrosion resistance, and is suitable for environments of ultra-high temperature and corrosive media.

[0032] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0033] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A vacuum baffle valve with high sealing performance, comprising a valve body (1), characterized in that: A valve stem (2) is arranged at the top of the valve body (1), a connecting sleeve (3) is fixedly connected to the top of the valve stem (2), a connecting base (4) is fixedly connected to the bottom of the valve body (1), a connecting port (5) is arranged on the right side of the valve body (1), a movable sleeve (6) is movably connected to the surface of the connecting port (5), a clamping frame (7) is movably connected to the front and rear sides of the movable sleeve (6) away from the valve body (1), a fixing plate (8) is fixedly connected to the top of the clamping frame (7), a nut (9) is fixedly connected to the front of the fixing plate (8), a fastening bolt (10) is threadedly connected to the inner cavity of the nut (9), and the valve body (1) comprises a base layer (101), a high temperature resistant layer (102) is fixedly connected to the inner surface of the base layer (101), an anti-corrosion layer (103) is fixedly connected to the outer surface of the base layer (101), and a strengthening layer (104) is fixedly connected to the outer surface of the anti-corrosion layer (103).

2. A vacuum baffle valve with high sealing performance according to claim 1, characterized in that: The top of the connecting sleeve (3) is fixedly connected to a valve wheel (11), and an anti-slip groove is provided on the surface of the valve wheel (11).

3. A vacuum baffle valve with high sealing performance according to claim 1, characterized in that: One side of the movable sleeve (6) is movably connected to an adjustment disk (12), and the surface of the adjustment disk (12) is provided with anti-slip grooves.

4. A vacuum baffle valve with high sealing performance according to claim 1, characterized in that: The inner wall of the movable sleeve (6) is provided with an internal thread, and the surface of the connecting port (5) is provided with an external thread matching the internal thread.

5. A vacuum baffle valve with high sealing performance according to claim 1, characterized in that: The material of the base layer (101) is special stainless steel, and the material of the high temperature resistant layer (102) is high temperature ceramic.

6. A vacuum baffle valve with high sealing performance according to claim 1, characterized in that: The material of the anti-corrosion layer (103) is copper alloy, and the material of the strengthening layer (104) is hard alloy.

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