Pressing sealing cover for nitrogen making machine

Abstract

The utility model discloses a pressure sealing cover for a nitrogen making machine, which belongs to the field of nitrogen making machines and comprises a tank body, the tank body comprises a bottom tank and a sealing cover body arranged above the bottom tank, a branch pipe is arranged at the top end of the sealing cover body, and a connecting pipe is arranged on the side wall of the bottom tank. Flange plates are fixedly arranged on the side walls of the opposite ends of the bottom tank and the sealing cover body in a sleeving mode, a sealing ring is fixedly installed on the inner wall of the lower section of the sealing cover body, four transverse plates distributed in an annular array mode are fixedly installed on the side wall of the sealing cover body, and stabilizing assemblies are arranged at the bottom ends of the transverse plates. According to the utility model, the opposite sides of the bottom tank and the sealing cover body are provided with the sealing gasket, so that the sealing performance of the attachment between the bottom tank and the sealing cover body is favorably maintained, and the stabilizing assembly and the pressing assembly are matched to play a role in clamping and stabilizing the flanges on the side walls of the bottom tank and the sealing cover body, so that the attachment stability of the two flanges is favorably maintained; and therefore, the sealing performance of the bottom tank and the sealing cover body can be kept.

Description

Technical Field

[0001] The utility model relates to the field of nitrogen generators, and more particularly to a compression sealing cover for nitrogen generators. Background Art

[0002] A nitrogen generator uses air as a raw material and physically separates oxygen and nitrogen to produce nitrogen. Industrial nitrogen generators can be categorized into three types: cryogenic air separation, molecular sieve air separation, and membrane air separation. Nitrogen generators are designed and manufactured using pressure swing adsorption (PSA) technology. Using high-quality imported carbon molecular sieves as adsorbents, they utilize the principle of PSA at room temperature to separate air and produce high-purity nitrogen. Two adsorption towers are typically connected in parallel, with an imported PLC controlling the automatic operation of pneumatic valves. These towers alternate between pressurized adsorption and decompression regeneration to separate nitrogen and oxygen, producing the required high-purity nitrogen. The processing tank consists of a lower half tank and a sealing lid.

[0003] The lower half of some existing nitrogen generators is secured to the sealing cover via a flange. After prolonged use, the bolts and nuts between the flanges can become loose, creating a gap between the lower half and the sealing cover. This reduces the seal between the lower half and the sealing cover, potentially affecting the nitrogen production efficiency of the equipment. Therefore, to address this issue, we have proposed a pressure-sealed cover for nitrogen generators. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a pressure sealing cover for a nitrogen generator, which adopts the following technical solutions:

[0005] A pressure sealing cover for a nitrogen generator comprises a tank body, the tank body comprising a bottom tank and a sealing cover arranged above the bottom tank, a branch pipe being provided at the top of the sealing cover, a connecting pipe being provided at the side wall of the bottom tank, flanges being fixedly sleeved on the side walls of the bottom tank and the sealing cover at opposite ends, a sealing ring being fixedly installed on the inner wall of the lower section of the sealing cover, four horizontal plates distributed in a circular array being fixedly installed on the side wall of the sealing cover, and a stabilizing component being provided at the bottom end of each horizontal plate.

[0006] By adopting the above technical solution, when the equipment is used, the staff places the sealing cover body above the bottom tank so that the two flanges fit correspondingly, and fixes the sealing cover body and the bottom tank through the combination of bolts and nuts in the existing technology. Then, the two flanges are clamped and fixed by the stabilizing component to further stabilize the sealing cover body and the bottom tank, which helps to prevent the bolts and nuts from loosening, thereby affecting the sealing between the sealing cover body and the bottom tank.

[0007] Furthermore, the stabilizing component includes a cylinder fixedly installed at the bottom end of the horizontal plate, the ends of the cylinder piston shafts are rotatably installed with connecting columns, the bottom ends of the connecting columns are fixedly installed with mounting plates, and one side of the mounting plate is respectively fixedly installed with a first support plate and a second support plate that are symmetrically distributed, the first support plate is located above the second support plate in the same group, and a pressing component is provided at the bottom of the first support plate.

[0008] By adopting the above technical solution, when the sealing cover and the bottom tank are fitted together, the staff rotates the mounting plate to move the first support plate and the second support plate away from the tank body, and then drives the same group of connecting columns, mounting plates, first support plates and second support plates to descend through the cylinder. When the mounting plate descends to the appropriate position, the staff rotates the mounting plate in the opposite direction so that the second support plate is located below the flange installed on the side wall of the bottom tank, and then drives the same group of connecting columns, mounting plates, first support plates and second support plates to rise through the cylinder, so that the top of the second support plate is fitted with the bottom of the flange installed on the side wall of the bottom tank, and then operates the flange installed on the side wall of the low-pressure sealing cover through the pressing assembly. Through the cooperation of the second support plate and the pressing assembly, the two flanges are clamped and fixed, thereby achieving the effect of further fixing the sealing cover and the bottom tank, which is beneficial to maintaining the sealing of the sealing cover and the bottom tank.

[0009] Furthermore, the pressing assembly includes a telescopic rod fixedly mounted on the bottom end of the first support plate, the ends of the telescopic rod are fixedly mounted with pressing plates, and the bottom ends of the pressing plates are provided with rubber pads.

[0010] By adopting the above technical solution, when the top of the second support plate fits with the bottom of the flange installed on the side wall of the bottom tank, the pressing plate of the same group is driven to descend by the telescopic rod, so that the bottom of the pressing plate fits with the top of the flange installed on the side wall of the sealing cover body. Through the cooperation of the pressing plate and the second support plate, the two flanges are clamped and fixed, thereby achieving the effect of further fixing the sealing cover body and the bottom tank, which is beneficial to maintaining the sealing performance of the sealing cover body and the bottom tank, and helps to avoid the bolts and nuts set between the two flanges from loosening, which affects the sealing performance of the sealing cover body and the bottom tank.

[0011] Furthermore, a limiting block is fixedly installed on one side of the pressing plate close to the mounting plate of the same group, and a limiting groove matching the limiting block of the same group is opened on one side of the mounting plate close to the pressing plate of the same group.

[0012] By adopting the above technical solution, when the pressing plate is raised or lowered, the pressing plate slides in the limiting groove on the same side with the limiting block. The cooperation between the limiting block and the limiting groove is conducive to maintaining the sliding stability of the pressing plate.

[0013] Furthermore, an insert ring is fixedly installed on the bottom end of the sealing cover body, a groove matching the insert ring is opened on the top end of the bottom tank, and sealing gaskets are fixedly installed on the opposite sides of the sealing cover body and the bottom tank.

[0014] By adopting the above technical solution, when the sealing cover body and the bottom tank are fitted together, the plug ring installed on the bottom of the sealing cover body and the groove opened on the top of the bottom tank are engaged. The engagement of the plug ring and the groove is conducive to maintaining the sealing of the sealing cover body and the bottom tank.

[0015] Furthermore, four positioning rods distributed in a circular array are fixedly installed on the inner wall of the bottom end of the groove, and a positioning groove matching the positioning rods is formed at the bottom end of the insert ring.

[0016] By adopting the above technical solution, a positioning rod is provided in the groove, and the positioning rod is engaged with the positioning groove provided at the bottom of the insert ring to achieve the effect of positioning and stabilizing the insert ring.

[0017] Furthermore, stabilizing rods are fixedly installed on the bottom of the transverse plate and the side walls of the sealing cover.

[0018] By adopting the above technical solution, the stabilizing rod is provided between the transverse plate and the sealing cover body, thereby playing the role of supporting and stabilizing the transverse plate.

[0019] In summary, the present invention has the following beneficial technical effects:

[0020] (1) In the present application, the side opposite to the bottom tank and the sealing cover is provided with a sealing gasket, which is conducive to maintaining the sealing between the bottom tank and the sealing cover, and the cooperation of the stabilizing component and the pressing component plays a role in clamping and stabilizing the flanges of the bottom tank and the sealing cover, which is conducive to maintaining the stability of the fit between the two flanges, and further conducive to maintaining the sealing between the bottom tank and the sealing cover.

[0021] (2) In the present invention, a sealing ring is provided in the sealing cover body, and the lower section of the sealing ring is located in the bottom tank. The engagement of the insert ring and the groove is conducive to maintaining the sealing between the bottom tank and the sealing cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of the utility model;

[0023] Figure 2 For this utility model Figure 1 A magnified view of middle A;

[0024] Figure 3 This is an expanded view of the bottom tank and the sealing cover of the utility model;

[0025] Figure 4 For this utility model Figure 3 Enlarged view of middle B;

[0026] Figure 5 It is a cross-sectional view of the present utility model;

[0027] Figure 6For this utility model Figure 5 Enlarged view of C in the middle.

[0028] Description of the numbers in the figure:

[0029] 1. Tank body; 11. Bottom tank; 111. Groove; 112. Positioning rod; 12. Sealing cover; 121. Horizontal plate; 122. Sealing ring; 123. Insert ring; 2. Cylinder; 3. Mounting plate; 31. First support plate; 311. Telescopic rod; 312. Pressing plate; 32. Second support plate; 4. Connecting column. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0033] The following is combined with Figure 1-6 The utility model is described in further detail.

[0034] See also Figure 1-6, a pressure sealing cover for a nitrogen generator, including a tank body 1, the tank body 1 includes a bottom tank 11 and a sealing cover body 12 arranged above the bottom tank 11, the top of the sealing cover body 12 is provided with a branch pipe, the side wall of the bottom tank 11 is provided with a connecting pipe, the side walls of the bottom tank 11 and the sealing cover body 12 at the opposite ends are fixedly sleeved with a flange, a sealing ring 122 is fixedly installed on the inner wall of the lower section of the sealing cover body 12, and a plug ring 123 is fixedly installed on the bottom end of the sealing cover body 12. A groove 111 matching the plug ring 123 is opened at the top of the bottom tank 11, and a sealing gasket is fixedly installed on the opposite side of the sealing cover body 12 and the bottom tank 11. Four positioning rods 112 distributed in a ring array are fixedly installed on the inner wall of the bottom end of the groove 111, and a positioning groove matching the positioning rod 112 is opened at the bottom of the plug ring 123. A stabilizing rod is fixedly installed on the bottom of the horizontal plate 121 and the side wall of the sealing cover body 12.

[0035] When the equipment is in use, the staff places the sealing cover 12 on the bottom tank 11 so that the two flanges fit together, and fixes the sealing cover 12 and the bottom tank 11 by means of the bolts and nuts of the existing technology. When the sealing cover 12 and the bottom tank 11 fit together, the plug ring 123 installed at the bottom of the sealing cover 12 and the groove 111 opened at the top of the bottom tank 11 are engaged. The engagement of the plug ring 123 and the groove 111 is conducive to maintaining the sealing of the sealing cover 12 and the bottom tank 11. A positioning rod 112 is provided in the groove 111, and the positioning rod 112 is engaged with the positioning groove opened at the bottom of the plug ring 123 to achieve the effect of positioning and stabilizing the plug ring 123.

[0036] Four horizontal plates 121 distributed in a circular array are fixedly installed on the side wall of the sealing cover body 12, and a stabilizing component is provided at the bottom end of the horizontal plate 121. The stabilizing component includes a cylinder 2 fixedly installed on the bottom end of the horizontal plate 121, and the end of the piston shaft of the cylinder 2 is rotatably installed with a connecting column 4, and the bottom end of the connecting column 4 is fixedly installed with a mounting plate 3. One side of the mounting plate 3 is respectively fixedly installed with a first support plate 31 and a second support plate 32 that are symmetrically distributed. The first support plate 31 is located above the second support plate 32 of the same group. A pressing component is provided at the bottom of the first support plate 31, and the pressing component includes a telescopic rod 311 fixedly installed on the bottom end of the first support plate 31, and a pressing plate 312 is fixedly installed on the end of the telescopic rod 311, and a rubber pad is provided at the bottom end of the pressing plate 312.

[0037] When the sealing cover 12 and the bottom tank 11 are fitted together, the staff rotates the mounting plate 3 to move the first support plate 31 and the second support plate 32 away from the tank body 1, and then drives the connecting column 4, the mounting plate 3, the first support plate 31 and the second support plate 32 of the same group to descend through the cylinder 2. When the mounting plate 3 descends to a suitable position, the staff rotates the mounting plate 3 in the opposite direction so that the second support plate 32 is located below the flange installed on the side wall of the bottom tank 11, and then drives the connecting column 4, the mounting plate 3, the first support plate 31 and the second support plate 32 of the same group to rise through the cylinder 2 so that the top of the second support plate 32 is fitted with the bottom of the flange installed on the side wall of the bottom tank 11 When the top of the second support plate 32 is in contact with the bottom of the flange installed on the side wall of the bottom tank 11, the pressing plate 312 of the same group is driven to descend by the telescopic rod 311, so that the bottom of the pressing plate 312 is in contact with the top of the flange installed on the side wall of the sealing cover body 12. The cooperation between the pressing plate 312 and the second support plate 32 plays the role of clamping and fixing the two flanges, thereby further fixing the sealing cover body 12 and the bottom tank 11, which is conducive to maintaining the sealing performance of the sealing cover body 12 and the bottom tank 11, and helps to prevent the bolts and nuts set between the two flanges from loosening, which affects the sealing performance of the sealing cover body 12 and the bottom tank 11.

[0038] The pressing plate 312 is fixedly installed with a limit block on the side close to the same group of mounting plates 3, and the mounting plate 3 is provided with a limit groove matching the limit block on the side close to the same group of pressing plates 312. When the pressing plate 312 is raised or lowered, the pressing plate 312 slides in the limit groove on the same side with the limit block. The cooperation between the limit block and the limit groove is conducive to maintaining the sliding stability of the pressing plate 312.

[0039] The implementation principle of the embodiment of the present utility model is: when the equipment is used, the staff places the sealing cover body 12 above the bottom tank 11 so that the two flanges fit correspondingly, and fixes the sealing cover body 12 and the bottom tank 11 through the combination of bolts and nuts in the existing technology, and then clamps and fixes the two flanges through a fixing component to further stabilize the sealing cover body 12 and the bottom tank 11, which helps to prevent the bolts and nuts from loosening, thereby affecting the sealing between the sealing cover body 12 and the bottom tank 11.

[0040] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressure-sealed cover for a nitrogen generator, comprising a tank body (1), characterized in that: The tank body (1) comprises a bottom tank (11) and a sealing cover (12) arranged above the bottom tank (11); a branch pipe is provided at the top of the sealing cover (12); a connecting pipe is provided on the side wall of the bottom tank (11); flanges are fixedly sleeved on the side walls of the opposite ends of the bottom tank (11) and the sealing cover (12); a sealing ring (122) is fixedly installed on the inner wall of the lower section of the sealing cover (12); four horizontal plates (121) distributed in a ring array are fixedly installed on the side wall of the sealing cover (12); and a stabilizing component is provided at the bottom end of each horizontal plate (121).

2. The pressure sealing cover for a nitrogen generator according to claim 1, characterized in that: The stabilizing assembly comprises a cylinder (2) fixedly mounted on the bottom end of the transverse plate (121); a connecting column (4) is rotatably mounted on the end of the piston shaft of the cylinder (2); a mounting plate (3) is fixedly mounted on the bottom end of the connecting column (4); a first supporting plate (31) and a second supporting plate (32) are fixedly mounted on one side of the mounting plate (3) in a symmetrical distribution; the first supporting plate (31) is located above the second supporting plate (32) in the same group; and a pressing assembly is provided at the bottom of the first supporting plate (31).

3. The pressure sealing cover for a nitrogen generator according to claim 2, characterized in that: The pressing assembly comprises a telescopic rod (311) fixedly mounted on the bottom end of the first support plate (31), a pressing plate (312) is fixedly mounted on each end of the telescopic rod (311), and a rubber pad is provided at the bottom end of each pressing plate (312).

4. The pressure sealing cover for a nitrogen generator according to claim 3, characterized in that: The pressing plate (312) is fixedly mounted with a limiting block on one side close to the mounting plate (3) in the same group, and the mounting plate (3) is provided with a limiting groove matching the limiting block in the same group on one side close to the pressing plate (312) in the same group.

5. The pressure sealing cover for a nitrogen generator according to claim 1, characterized in that: The bottom end of the sealing cover (12) is fixedly mounted with an insert ring (123), the top end of the bottom tank (11) is provided with a groove (111) matching the insert ring (123), and opposite sides of the sealing cover (12) and the bottom tank (11) are fixedly mounted with sealing gaskets.

6. The pressure sealing cover for a nitrogen generator according to claim 5, characterized in that: Four positioning rods (112) distributed in a ring array are fixedly installed on the inner wall of the bottom end of the groove (111), and a positioning groove matching the positioning rods (112) is opened at the bottom end of the insert ring (123).

7. The pressure sealing cover for a nitrogen generator according to claim 1, characterized in that: The bottom of the transverse plate (121) and the side wall of the sealing cover (12) are both fixedly mounted with stabilizing rods.

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