Fuel cell filter convenient to maintain

Abstract

The utility model relates to the field of fuel cells, in particular to a fuel cell filter convenient to maintain. Comprising a shell, a filter part and a maintenance cover, the two sides of the shell are through, and an opening is formed in the bottom end. The filter piece comprises a blocking block guide column, a filter screen and a connecting part; a clamping groove is formed in the blocking block guide column. The filter screen is detachably arranged in the blocking block guide column through the clamping groove; the connecting part is fixedly arranged at the bottom end of the plugging block guide column; the top end of the maintenance cover is detachably connected with the bottom end of the filtering piece through a connecting part; the filtering piece is provided with the through hole penetrating through the side wall, and cooling liquid enters and exits from the through hole; the filter screen is clamped and fixed in the blocking block guide column and can be disassembled and maintained; when the whole filtering piece is pulled down, the blocking block guide column can block the penetrating position of the shell, cooling liquid is prevented from flowing out, and therefore when the filtering net is maintained, the cooling liquid does not need to be emptied, and water does not need to be added again for exhausting; the stop block guide column can be limited by the limiting rod, the movement distance of the stop block guide column is prevented from being too large, and it is ensured that the stop block guide column has the blocking effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell field especially, and it relates to a fuel cell filter convenient to maintain. BACKGROUND

[0002] The main working principle of "fuel cell" is the chemical reaction of hydrogen and oxygen, and electric charge and heat are generated in the process. Fuel cell has high requirements on the temperature, pressure and humidity of reaction gas, and because of heat release in the chemical reaction process, the fuel cell system needs a cooling subsystem to cool it. The high-power fuel cell on the market is usually water-cooled fuel cell, that is, the fuel cell is cooled by circulating cooling liquid. The common components of the cooling subsystem of the fuel cell are: stack, water pump, PTC heater, electronic thermostat, radiator, expansion tank, filter and circulating pipeline, etc. The function of the filter is to isolate the internal impurities of the cooling liquid and the impurities separated out during the operation of the components of the cooling subsystem, so as to avoid entering the stack and affecting the working performance of the fuel cell.

[0003] The filter used on the market now is mostly straight-through filter, and some Y-type filters are also used. The basic principle is to fasten the multi-mesh filter screen inside the main flow channel of the filter, and isolate the impurities in the upflow during the process of the cooling liquid passing through the main flow channel. Whether it is a straight-through filter or a Y-type filter, it needs to be maintained regularly, cleaned of impurities, and even replaced with a filter screen. Since the filter is installed on the main cooling circuit, it is inevitable to release all the cooling liquid in the entire cooling circulation water circuit before disassembling the filter for maintenance and replacement. After maintenance and replacement, the entire system needs to be refilled with antifreeze and undergo exhaust treatment, which wastes a lot of manpower, material resources and time cost. UTILITY MODEL CONTENTS

[0004] The utility model aims at the deficiencies in the prior art, and provides a fuel cell filter which does not need to release cooling liquid during maintenance and replacement, avoids refilling water and exhaust, and saves manpower, material resources and time cost.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0006] The utility model provides a fuel cell filter convenient to maintain, which comprises a shell, a filter element sleeved in the shell and movably connected with the shell, and a maintenance cover detachably arranged at the bottom end of the filter element.

[0007] The shell is provided with an opening at the bottom end and penetrates through both sides.

[0008] The filter piece comprises a plug guide column, a filter screen and a connecting part; a through hole is formed in the middle of the sidewall of the plug guide column along the radial direction thereof, and the opening direction of the through hole is consistent with the through direction of the shell; a clamping groove is arranged in the plug guide column; the filter screen is detachably arranged in the plug guide column through the clamping groove; and the connecting part is fixedly arranged at the bottom end of the plug guide column.

[0009] The top end of the maintenance cover is detachably connected with the bottom end of the filter piece through the connecting part.

[0010] Preferably, a plurality of fixing holes are arranged on the sidewall of the shell; and a plurality of threaded holes are arranged at the bottom end of the shell.

[0011] Preferably, a first sealing groove is arranged on the inner wall of the bottom end of the shell, a first sealing ring is arranged in the first sealing groove, and the shell and the filter piece are sealed through the first sealing ring.

[0012] Preferably, a second sealing groove is arranged on the inner wall of the connecting part, a second sealing ring is arranged in the second sealing groove, and the filter piece and the maintenance cover are sealed through the second sealing ring.

[0013] More preferably, a plurality of connecting holes are formed on the connecting part, and the positions and the number of the connecting holes are matched with the threaded holes.

[0014] Preferably, the filter piece further comprises a limiting rod; the bottom end of the limiting rod is connected with the top end of the connecting part; the limiting rod is sleeved in the shell and movably connected with the shell.

[0015] More preferably, a limiting block is arranged at the top end of the limiting rod, a limiting ring for limiting the limiting block is arranged in the shell; and the limiting rod is limited through the cooperation of the limiting block and the limiting ring.

[0016] Preferably, a pull ring is arranged at the bottom end of the maintenance cover.

[0017] More preferably, a plurality of fasteners are further arranged; the top end of the fastener passes through the connecting hole and is threadedly connected with the threaded hole.

[0018] Compared with the prior art, the above technical scheme has the following technical effects:

[0019] The filter piece is provided with a through hole penetrating the side wall for the cooling liquid to enter and exit; the filter screen is clamped in the block guide column and can be disassembled and maintained; when the filter piece is pulled down as a whole, the block guide column can block the penetration of the shell body, prevent the cooling liquid from flowing out, and further make it unnecessary to empty the cooling liquid when the filter screen is maintained, and it is unnecessary to add water and exhaust again; the limiting rod can limit the block guide column to prevent its movement distance from being too large and ensure that the block guide column has a blocking effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a basic structure schematic view of the fuel cell filter in the filter state for the embodiment of the utility model convenient to maintain.

[0021] Figure 2 It is a basic structure schematic view of the fuel cell filter in the maintenance state for the embodiment of the utility model convenient to maintain.

[0022] Figure 3 It is a structure schematic view of the fuel cell filter in the embodiment of the utility model convenient to maintain.

[0023] Figure 4 It is a basic structure schematic view of the shell body in the embodiment of the utility model.

[0024] Figure 5 It is a basic structure schematic view of the filter piece in the embodiment of the utility model.

[0025] The reference signs in the drawings include:

[0026] The shell body 1; the fixed hole 11; the threaded hole 12; the filter piece 2; the block guide column 21; the filter screen 22; the connecting part 23; the connecting hole 231; the limiting rod 24; the limiting block 241; the maintenance cover 3. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0029] The utility model will be further described below with reference to the drawings and specific embodiments, but it is not limited to the utility model.

[0030] EMBODIMENT

[0031] The embodiment provides a fuel cell filter convenient to maintain, which comprises a shell 1, a filter piece 2 sleeved in the shell 1 and movably connected with the shell 1, a maintenance cover 3 detachably arranged at the bottom end of the filter piece 2 and a plurality of fasteners.

[0032] The shell 1 is provided with openings at both sides and the bottom end, a plurality of fixing holes 11 are arranged on the side wall of the shell 1, a plurality of threaded holes 12 are arranged at the bottom end of the shell 1, a first sealing groove is arranged on the inner wall of the bottom end of the shell 1, a first sealing ring is arranged in the first sealing groove, and the shell 1 and the filter piece 2 are sealed through the first sealing ring.

[0033] The filter piece 2 comprises a plug guide column 21, a filter screen 22, a connecting part 23 and a limiting rod 24, a through hole is formed in the middle of the side wall of the plug guide column 21 along the radial direction of the plug guide column 21, the opening direction of the through hole is consistent with the penetrating direction of the shell 1, a clamping groove is arranged in the plug guide column 21, the filter screen 22 is detachably arranged in the plug guide column 21 through the clamping groove, the connecting part 23 is fixedly arranged at the bottom end of the plug guide column 21, a second sealing groove is arranged on the inner wall of the connecting part 23, a second sealing ring is arranged in the second sealing groove, the filter piece 2 and the maintenance cover 3 are sealed through the second sealing ring, a plurality of connecting holes 231 are formed in the connecting part 23, the positions and the number of the connecting holes 231 are matched with the threaded holes 12, and the top end of the fastener penetrates through the connecting holes 231 and is threadedly connected with the threaded holes 12.

[0034] The bottom end of the limiting rod 24 is connected with the top end of the connecting part 23, the top end of the limiting rod 24 is provided with a limiting block 241, the shell 1 is provided with a limiting ring for limiting the limiting block 241, and the limiting rod 24 is limited through cooperation of the limiting block 241 and the limiting ring.

[0035] The top end of the maintenance cover 3 is detachably connected with the bottom end of the filter piece 2 through the connecting part 23, and the bottom end of the maintenance cover 3 is provided with a pull ring.

[0036] In use, the through direction of the shell 1 is consistent with the through hole direction of the plug guide column 21, so that the cooling liquid passes through the shell 1 and the plug guide column 21 and is filtered by the filter screen 22 in the plug guide column 21; when maintenance is required, the operator dismounts the fastener, pulls down the pull ring, and the maintenance cover 3 is threadedly connected to the bottom end of the filter element 2, so that the maintenance cover 3 moves downward to drive the filter element 2 to move downward as a whole, and the upper part of the filter element 2 gradually blocks the through part of the shell 1; the bottom end of the limiting rod 24 is connected to the top end of the connecting part 23, so that the limiting rod 24 moves downward during the downward movement of the filter element 2, and when the limiting block 241 is clamped by the limiting ring in the shell 1, it indicates that the filter element 2 is moved to the position, at this time, the operator can rotate the maintenance cover 3, and after the maintenance cover 3 is removed, the filter screen 22 in the plug guide column 21 is maintained, and after the maintenance is completed, the filter element 2 is pushed back into the shell 1 and the fastener is mounted, and the filtering can continue.

[0037] In summary, the filter element of the utility model is provided with a through hole penetrating through the side wall for the cooling liquid to enter and exit; the filter screen is clamped in the plug guide column and can be dismounted and maintained; when the filter element is pulled downward as a whole, the plug guide column can block the through part of the shell to prevent the cooling liquid from flowing out, so that the cooling liquid does not need to be emptied when the filter screen is maintained, and water does not need to be added and air is not needed to be discharged again; the limiting rod can limit the plug guide column to prevent the movement distance from being too large, and ensure that the plug guide column has a blocking effect.

[0038] The above only describes the preferred embodiments of the utility model, and does not limit the implementation and protection scope of the utility model; for those skilled in the art, it should be realized that any equivalent replacement and obvious changes made according to the contents of the utility model specification and drawings should be included in the protection scope of the utility model.

Claims

1. A fuel cell filter that is easy to maintain, characterized by, The utility model relates to a filter device, including: A shell (1), a filter piece (2) sleeved in the shell (1) and movably connected with the shell (1), and a maintenance cover (3) detachably arranged at the bottom end of the filter piece (2); The shell (1) is provided with an opening at the bottom end and penetrates through both sides; The filter piece (2) comprises a plug guide column (21), a filter screen (22) and a connecting part (23); a through hole is formed in the middle of the side wall of the plug guide column (21) along the radial direction thereof, and the opening direction of the through hole is consistent with the penetration direction of the shell (1); the plug guide column (21) is provided with a clamping groove; the filter screen (22) is detachably arranged in the plug guide column (21) through the clamping groove; and the connecting part (23) is fixedly arranged at the bottom end of the plug guide column (21); The top end of the maintenance cover (3) is detachably connected with the bottom end of the filter piece (2) through the connecting part (23).

2. The fuel cell filter of claim 1, wherein, The side wall of the shell (1) is provided with a plurality of fixing holes (11); and the bottom end of the shell (1) is provided with a plurality of threaded holes (12).

3. The fuel cell filter of claim 1, wherein, The inner wall of the bottom end of the shell (1) is provided with a first sealing groove, and a first sealing ring is arranged in the first sealing groove; and the shell (1) and the filter piece (2) are sealed through the first sealing ring.

4. The fuel cell filter of claim 1, wherein, The inner wall of the connecting part (23) is provided with a second sealing groove, and a second sealing ring is arranged in the second sealing groove; and the filter piece (2) and the maintenance cover (3) are sealed through the second sealing ring.

5. The fuel cell filter of claim 2, wherein, A plurality of connecting holes (231) are formed in the connecting part (23), and the positions and numbers of the connecting holes (231) are matched with those of the threaded holes (12).

6. The fuel cell filter of claim 1, wherein, The filter piece (2) further comprises a limiting rod (24); the bottom end of the limiting rod (24) is connected with the top end of the connecting part (23); and the limiting rod (24) is sleeved in the shell (1) and movably connected with the shell (1).

7. The fuel cell filter of claim 6, wherein, The top end of the limiting rod (24) is provided with a limiting block (241), and the shell (1) is provided with a limiting ring for limiting the limiting block (241); and the limiting rod (24) is limited through the cooperation of the limiting block (241) and the limiting ring.

8. The fuel cell filter of claim 1, wherein, The bottom end of the maintenance cover (3) is provided with a pull ring.

9. The fuel cell filter of claim 5, wherein, Further comprising: A plurality of fasteners; the top end of the fastener penetrates through the connecting hole (231) and is threadedly connected with the threaded hole (12).

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