Lifting mechanism for flange cover of large filter and its installation method

Abstract

The invention discloses a lifting mechanism for a flange cover of a large filter and its installation method, which relates to the field of hydrogen energy utilization. It includes two upper and lower support plates, a main shaft sleeve, a main shaft, a main shaft thrust ball bearing and its bearing seat, a main shaft bearing cover, a tapered roller bearing of the main shaft sleeve, a main shaft nut, a bearing gland, a bracket, a handle, a suspension rod provided with a guide groove, a suspension rod cover plate and a suspension rod bearing gland at the upper end surface thereof, a suspension rod thrust ball bearing, a limit bolt, a suspension rod sleeve outside the suspension rod, a suspension rod installation bolt and a suspension rod nut, a connecting plate, a filter flange cover and a filter cylinder body above it. The lower end of the suspension rod is connected to the connecting plate through the suspension rod installation bolt and nut, and the suspension rod cover is installed on the suspension rod sleeve by thread and aligned with the guide groove of the suspension rod. The invention only needs to manually rotate the handle to lift and rotate to open a flange cover with a weight greater than 1 ton, avoiding on-site hoisting by a crane, and the operation is simple, time-saving and labor-saving.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen energy utilization, and particularly to a lifting mechanism for a flange cover of a large filter and an installation method thereof. Background Art

[0002] With the development of the chemical industry, various gas filters are increasingly applied in the fields of hydrogen energy, gas power generation, etc. The gas-liquid separation field of gas power generation is also one of the hot fields of hydrogen energy utilization. Generally speaking, the filter element of a hydrogen filter needs to be replaced after running for a period of time, so it is necessary to open the flange cover of the filter. However, for large filters with a relatively large flange diameter, such as a flange cover weighing more than 1 ton, it is very difficult to directly open it manually. Most of the existing solutions are to use a crane on-site to lift the flange cover, which consumes a lot of resources, is troublesome to operate, time-consuming and laborious. More importantly, the crane lifting requires a large operating space.

[0003] Therefore, engineers have designed some technical solutions to replace the crane for lifting the flange cover. For example, the invention patent with the publication number of CN108557252A discloses a vertical device in which the flange cover can be rotated and lifted. It consists of a cylinder body, a flange cover and a flange cover rotation and lifting device. There is a flange on the outer wall of the cylinder body at a position corresponding to the flange cover for mutual fixation when the flange cover and the cylinder body are closed. The flange cover rotation and lifting device includes a crankshaft, a shackle bolt, a nut, an ear and a sleeve. The ear is fixedly welded on the outer wall of the cylinder body, and the sleeve is welded at the end of the ear. One end of the crankshaft is inserted into the sleeve, and the height position is relatively fixed. The crankshaft and the sleeve can rotate relative to each other to rotate the flange cover. The other end of the crankshaft is connected to the top of the flange cover through a shackle bolt, and the nut is sleeved on the shackle bolt to fix and adjust the relative height of the crankshaft and the shackle bolt to lift the flange cover. This device can avoid using a crane to lift the flange cover, but its operating efficiency is low, the rotation of the handle is laborious, and the crankshaft is easily damaged during the lifting process, which is not convenient for manual operation. Therefore, it is very important to design a lifting mechanism for opening a large flange cover to replace the crane. Summary of the Invention

[0004] The purpose of the present invention is to provide a lifting mechanism for a flange cover of a large filter and an installation method thereof to solve the problems in the background art.

[0005] In order to achieve the above purpose, the technical solution adopted is as follows:

[0006] The lifting mechanism for the flange cover of a large filter includes a spindle nut, a spindle bearing cover, a tapered roller bearing for the spindle sleeve, upper and lower support plates, a spindle sleeve, a spindle, a thrust ball bearing for the spindle and its bearing seat below the spindle, and a bearing gland. It also includes a bracket, a handle, a suspension rod, a suspension rod cover and a suspension rod bearing gland at the upper end surface of the suspension rod, a thrust ball bearing for the suspension rod, a limit bolt, a suspension rod sleeve outside the suspension rod, suspension rod mounting bolts and nuts, a connecting plate, a filter flange, a filter flange cover above it, and a filter cylinder body;

[0007] The two connecting plates are welded to the filter flange cover. The bracket is welded to the spindle and the suspension rod sleeve. The spindle sleeve is welded to the lower support plate and the upper support plate. The lower support plate is welded to the filter cylinder body. The upper support plate is welded to the filter flange. The handle is welded to the suspension rod bearing gland;

[0008] The lower end of the suspension rod is connected to the connecting plate through suspension rod mounting bolts and nuts. The thrust ball bearing for the suspension rod is installed on the suspension rod sleeve. The suspension rod bearing gland is connected to the suspension rod through trapezoidal threads and installed on the thrust ball bearing for the suspension rod. The suspension rod cover is installed on the upper end surface of the suspension rod through bolts. A guiding groove is provided at the lower end of the suspension rod. The limit bolt is installed on the suspension rod sleeve through threads and aligned with the guiding groove of the suspension rod.

[0009] The thrust ball bearings for the suspension rod can be arranged in two groups and installed at the lower end of the suspension rod.

[0010] The guiding groove provided on the suspension rod is in a strip shape or a wedge shape.

[0011] The installation method of the lifting mechanism for the flange cover of a large filter: The bearing seat is installed in the spindle sleeve. The thrust ball bearing for the spindle is installed on the bearing seat. The bearing gland is installed on the thrust ball bearing for the spindle. Then the spindle is installed in the spindle sleeve. The tapered roller bearing is installed at the lower end of the spindle. The spindle bearing cover is installed below the tapered roller bearing. A washer is installed at the lower end surface of the spindle bearing cover and fixed by the spindle nut;

[0012] First, install the suspension rod in the suspension rod sleeve, and connect the lower end of the suspension rod to the connecting plate through suspension rod mounting bolts and nuts. Then install the thrust ball bearing for the suspension rod on the suspension rod sleeve. Next, connect the suspension rod bearing gland to the suspension rod through trapezoidal threads and install it on the thrust ball bearing for the suspension rod. Then install the suspension rod cover on the upper end surface of the suspension rod through bolts.

[0013] The application of the lifting mechanism for the flange cover of a large filter in combustible gases such as methane, acetylene, ammonia, and chlorine.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This hoisting mechanism only needs to manually rotate the handle to lift and rotate the flange cover with a weight of more than 1 ton, avoiding on-site hoisting by a crane, with simple operation, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Markings in the figure: 1 - spindle nut, 2 - washer, 3 - spindle bearing cover, 4 - tapered roller bearing, 5 - lower support plate, 6 - spindle sleeve, 7 - upper support plate, 8 - spindle, 9 - bearing seat, 10 - spindle thrust ball bearing, 11 - bearing gland, 12 - bracket, 13 - handle, 14 - boom cover, 15 - boom, 16 - boom bearing gland, 17 - boom thrust ball bearing, 18 - limit bolt, 19 - boom sleeve, 20 - boom mounting bolt, 21 - boom nut, 22 - connecting plate, 23 - filter flange cover, 24 - filter flange, 25 - filter cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be further explained and described below in conjunction with the embodiments and the drawings. It should be noted that the described embodiments are only some preferred embodiments of the present invention, not all embodiments, which should not be regarded as any limitation to the present invention. The protection scope of the present invention is determined by the claims and their equivalents.

[0018] Embodiment 1: Please refer to Figure 1 , a flange cover hoisting mechanism for a large hydrogen filter, including a spindle nut 1, a spindle bearing cover 3, a tapered roller bearing 4, upper and lower support plates, a spindle sleeve 6, a spindle 8, a bearing seat 9, a spindle thrust ball bearing 10, a bearing gland 11, a bracket 12, a handle 13, a boom 15 and a boom cover 14 on its upper end surface, a boom bearing gland 16, a boom thrust ball bearing 17, a limit bolt 18, a boom sleeve 19, a boom mounting bolt 20 and a boom nut 21, a connecting plate 22, a filter flange 24, a filter flange cover 23 above it, and a filter cylinder 25;

[0019] During processing, the boom bearing gland 16 is processed with a trapezoidal internal thread, the boom 15 is processed with a trapezoidal external thread, and a longitudinal guide groove is processed on the boom 15 on the reverse side of the spindle 8; the two connecting plates 22 are welded to the filter flange cover 23, the bracket 12 is welded to the spindle 8 and the boom sleeve 19, the spindle sleeve 6 is welded to the lower support plate 5 and the upper support plate 7, the lower support plate 5 is welded to the filter cylinder 25, the upper support plate 7 is welded to the filter flange 24, and the handle 13 is welded to the boom bearing gland 16;

[0020] During installation, the bearing housing 9 is installed inside the main shaft sleeve 6, the main shaft thrust ball bearing 10 is installed on top of the bearing housing 9, the bearing gland 11 is installed on top of the main shaft thrust ball bearing 10, then the main shaft 8 is installed inside the main shaft sleeve 6, the tapered roller bearing 4 is installed at the lower end of the main shaft 8, the main shaft bearing seal cover 3 is installed below the tapered roller bearing 4, and the washer 2 is installed at the lower end face of the main shaft bearing seal cover 3 and fixed by the main shaft nut 1;

[0021] The suspension rod 15 is installed inside the suspension rod sleeve 19, and the lower end of the suspension rod 15 is connected to the connecting plate 22 through the suspension rod mounting bolt 20 and the nut 21. The suspension rod thrust ball bearing 17 is installed on top of the suspension rod sleeve 19. The suspension rod bearing gland 16 is connected to the suspension rod 15 through a trapezoidal thread and installed on top of the suspension rod thrust ball bearing 17. The suspension rod cover 14 is installed on the upper end face of the suspension rod 15 through bolts.

[0022] During use, the rotating handle 13 lifts the filter flange cover 23 through the trapezoidal thread of the suspension rod 15 and the suspension rod bearing gland 16, and opens the large hydrogen filter flange cover 23 by rotating the main shaft 8, the tapered roller bearing 4 and the main shaft thrust ball bearing 10.

[0023] The above lifting mechanism only needs to manually rotate the handle to lift and rotate to open the flange cover of a large filter with a weight greater than 1 ton, and the operation is simple and easy.

[0024] Embodiment 2: A flange lifting mechanism for a large ethylene filter. Other structures are similar to those of the flange lifting mechanism of the above hydrogen filter, except that a pressure gauge is provided outside the filter cylinder body 25, and a combustible gas alarm is installed on the outer side of the upper end face of the filter flange cover 23 to play a warning role when the ethylene concentration exceeds the standard.

[0025] Embodiment 3: A flange lifting mechanism for a large acetylene filter. Other structures are similar to those of the flange lifting mechanism of the above hydrogen filter. Considering the low explosion limit of acetylene, a smoke detector is fixed above the filter flange cover 23 of the filtering device to prevent accidents during the process of opening the flange cover.

[0026] Embodiment 4: A flange lifting mechanism for a large ammonia filter. Other structures are similar to those of the flange lifting mechanism of the above hydrogen filtering device, except that a hygrometer is also installed outside the filter cylinder body 25 to determine that the environmental humidity is suitable for opening the filter flange cover.

[0027] The above-mentioned pressure gauge, smoke detector, combustible gas alarm and hygrometer are all measuring instruments that can be obtained by those skilled in the art through existing commercial channels.

[0028] It should be noted that other embodiments obtained by those of ordinary skill in the art through deformation or variation under the guidance of the spirit of the present invention are all within the protection scope of the present invention.

Claims

1. Hoisting mechanism for flange cover of large filter, characterized in that: It includes a spindle nut (1), a spindle bearing cover (3), a tapered roller bearing (4) of the spindle sleeve, upper and lower support plates, a spindle sleeve (6), a spindle (8), a thrust ball bearing (10) of the spindle below the spindle (8) and its bearing seat (9), a bearing gland (11), a bracket (12), a handle (13), a suspension rod (15) and a suspension rod cover (14) at its upper end face and a suspension rod bearing gland (16), a thrust ball bearing (17) of the suspension rod, a limit bolt (18), a suspension rod sleeve (19) outside the suspension rod (15), a suspension rod mounting bolt (20) and a suspension rod nut (21), a connecting plate (22); The two connecting plates (22) are welded to a filter flange cover (23), the bracket (12) is welded to the spindle (8) and the suspension rod sleeve (19) respectively, the spindle sleeve (6) and the lower support plate (5) are welded to the upper support plate (7) respectively, the lower support plate (5) is welded to a filter cylinder (25), the upper support plate (7) is welded to a filter flange (24), and the handle (13) is welded to the suspension rod bearing gland (16); The bearing seat (9) is installed in the spindle sleeve (6), the thrust ball bearing (10) of the spindle is installed on the bearing seat (9), the bearing gland (11) is installed on the thrust ball bearing (10) of the spindle, then the spindle (8) is installed in the spindle sleeve (6), the tapered roller bearing (4) is installed at the lower end of the spindle (8), the spindle bearing cover (3) is installed below the tapered roller bearing (4), and a washer (2) is installed below the spindle bearing cover (3) and fixed by the spindle nut (1); The lower end of the suspension rod (15) is connected to the connecting plate (22) through a suspension rod mounting bolt (20) and a suspension rod nut (21), the thrust ball bearing (17) of the suspension rod is installed on the suspension rod sleeve (19), the suspension rod bearing gland (16) is connected to the suspension rod (15) through a trapezoidal thread and installed on the thrust ball bearing (17); a guiding groove is arranged at the lower end of the suspension rod (15); the suspension rod cover (14) is connected and fixed to the suspension rod (15) through bolts, and the limit bolt (18) is installed on the suspension rod sleeve (19) through a thread and aligned with the guiding groove of the suspension rod (15); the thrust ball bearing (17) of the suspension rod is installed at the lower end of the suspension rod (15); The guiding groove of the suspension rod (15) is strip-shaped or wedge-shaped.

2. The flange cover lifting mechanism of the large filter according to claim 1, characterized in that: Two sets of the thrust ball bearings (17) of the suspension rod are provided.

3. The hoisting mechanism for the flange cover of the large filter according to claim 1, wherein the installation method is characterized in that: the bearing block (9) is installed in the main shaft sleeve (6), the main shaft thrust ball bearing (10) is installed on the bearing block (9), the bearing gland (11) is fixed on the main shaft thrust ball bearing (10), then the main shaft (8) is installed in the main shaft sleeve (6), then the tapered roller bearing (4) is installed at the lower end of the main shaft (8), next the main shaft bearing seal cover (3) is installed under the tapered roller bearing (4), and then the washer (2) is installed at the lower end face of the main shaft bearing seal cover (3) and fixed by the main shaft nut (1); First, the suspension rod (15) is installed in the suspension rod sleeve (19), and the lower end of the suspension rod (15) is connected to the connecting plate (22) through the suspension rod mounting bolt (20) and the nut (21). Then, the suspension rod thrust ball bearing (17) is installed on the suspension rod sleeve (19). Next, the suspension rod bearing gland (16) is connected to the suspension rod (15) by a trapezoidal thread and installed on the suspension rod thrust ball bearing (17). Then, the suspension rod cover (14) is installed on the upper end face of the suspension rod (15) through bolts.

4. Application of the hoisting mechanism for the flange cover of the large filter according to claim 1 in a combustible gas filter of ethylene, acetylene or ammonia.

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