Fuel cell filter convenient to clean

Abstract

The utility model relates to the field of fuel cells, in particular to a fuel cell filter convenient to clean. Comprising a shell, an embedded sleeve, a filter screen, a valve rod and a replacement part, the embedded sleeve comprises an embedded sleeve frame, a front end baffle arranged at the top end of the embedded sleeve frame and a rear end baffle arranged at the bottom end of the embedded sleeve frame. The middle part of the embedded sleeve frame is through and is provided with a groove for clamping and fixing the filter screen; a drain hole is formed in the rear end baffle; the replacement part is communicated with the shell; the valve rod is arranged in the replacement part, and the bottom end of the valve rod extends out of the replacement part; according to the utility model, the embedded sleeve is matched with the valve rod, so that the filter screen does not need to be integrally disassembled when being cleaned, and the filter screen can be cleaned or replaced only by pulling the embedded sleeve down to the replacement part; when the filter screen is cleaned, the shell is isolated from the replacement part through the front end baffle, and cooling liquid is prevented from flowing out; and the cooling liquid in the replacement part can be discharged into the shell through the drainage hole in the baffle at the rear end, so that waste of the cooling liquid is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell field especially relates to a filter for fuel cell convenient to clean. BACKGROUND

[0002] When high-power fuel cell system cooling adopts liquid cooling mode, cooling liquid (deionized water or fuel cell special cooling liquid), electronic water pump, radiator and circulating pipeline are generally adopted. In the use and storage process of fuel cell system, some impurities will inevitably be mixed or generated, which may cause poor cooling effect of the cooling system, and in severe cases, may cause pipeline blockage, damage other components, and even irreversible damage to the stack. In order to avoid such failures, particle filters are increasingly used in fuel cell systems.

[0003] Most of the filters for fuel cell systems at present are Y-type filters and straight-through filters. Y-type filters are convenient to replace but have large volume and flow resistance, and have been gradually replaced by straight-through filters. Straight-through filters have small flow resistance and volume, but are inconvenient to replace. After the pipeline is drained and cut off, the filter needs to be completely disassembled to be removed, and then the filter screen needs to be cleaned. After cleaning, the filter needs to be reassembled and reset, and additional cooling liquid needs to be added before the exhaust can be operated again. During the cleaning of the filter, the entire fuel cell system needs to be drained, waterless, watered, and exhausted, which greatly affects the work efficiency. SUMMARY

[0004] The utility model aims at the deficiency in the prior art, and provides a filter for fuel cell, which can complete filter screen cleaning without complete disassembly and avoid multiple water addition and exhaust.

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

[0006] The utility model provides a filter for fuel cell convenient to clean, which comprises a shell, an inner nest arranged in the shell, a filter screen arranged in the middle part of the inner nest, a valve rod arranged at the bottom end of the inner nest, and a replacement part arranged at the bottom end of the shell.

[0007] The inner nest comprises an inner nest frame, a front end baffle arranged at the top end of the inner nest frame, and a rear end baffle arranged at the bottom end of the inner nest frame. A groove for clamping the filter screen is arranged in the middle part of the inner nest frame. A drain hole is arranged on the rear end baffle.

[0008] The replacement part is in communication with the shell. The valve rod is arranged in the replacement part, the top end of the valve rod is fixedly connected with the bottom end of the rear end baffle, and the bottom end of the valve rod extends out of the replacement part.

[0009] Preferably, the top end of the shell is provided with a protrusion part accommodating the front end baffle.

[0010] Preferably, a sealing layer is arranged between the front end baffle and the inner nesting frame.

[0011] Preferably, the front end baffle has a length greater than twice the length of the rear end baffle.

[0012] Preferably, the replacement part is open on one side, and a sealing plug is arranged at the opening.

[0013] Preferably, the bottom end of the replacement part is provided with a through hole for the valve rod to pass through; and the bottom end of the inner cavity of the replacement part is provided with a sealing seat.

[0014] Preferably, the shell is through on both sides, and a water inlet pipe is connected to one side of the shell and a water outlet pipe is connected to the other side of the shell.

[0015] Preferably, the shell is made of transparent material.

[0016] The above technical scheme is adopted in the utility model, compared with the prior art, and the following technical effects are achieved.

[0017] The utility model discloses the cooperation of inner nesting and valve rod, makes the filter screen clean and does not need to dismantle integrally, only needs to pull down the inner nesting to the replacement part and can clean or replace the filter screen, when cleaning the filter screen, the front end baffle isolates the shell and the replacement part, and the cooling liquid flows out, and the drain hole on the rear end baffle can drain the cooling liquid in the replacement part into the shell, and the waste of cooling liquid is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is basic structure schematic diagram of the filter for fuel cell convenient to clean in an embodiment of the utility model;

[0019] Figure 2 It is sectional view of the filter for fuel cell convenient to clean in an embodiment of the utility model;

[0020] Figure 3 It is Figure 2 The enlarged view of A.

[0021] The reference signs in the drawings include:

[0022] Shell 1;Protrusion part 11;Inner nesting 2;Inner nesting frame 21;Front end baffle 22;Rear end baffle 23;Drain hole 231;Sealing layer 24;Filter screen 3;Valve rod 4;Replacement part 5;Sealing plug 51;Sealing seat 52;Front end baffle length a;Rear end baffle length b. DETAILED DESCRIPTION

[0023] With reference to the drawings and embodiments, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflicts.

[0025] The present application will be further described below in combination with the drawings and specific embodiments, but is not limited to the present application.

[0026] Embodiment

[0027] The present embodiment provides a filter for fuel cell convenient to clean, comprising: a shell 1, an inner nest 2 arranged in the shell 1, a filter screen 3 arranged in the middle of the inner nest 2, a valve rod 4 arranged at the bottom end of the inner nest 2, and a replacement part 5 arranged at the bottom end of the shell 1.

[0028] The shell 1 is through on both sides, and a water inlet pipe is connected to one side of the shell 1 and a water outlet pipe is connected to the other side; a protruding part 11 is arranged at the top end of the shell 1; the shell 1 is made of transparent material.

[0029] The inner nest 2 comprises: an inner nest frame 21, a front end baffle 22 arranged at the top end of the inner nest frame 21 and located in the protruding part 11, a rear end baffle 23 arranged at the bottom end of the inner nest frame 21, and a sealing layer 24 arranged between the front end baffle 22 and the inner nest frame 21; the inner nest frame 21 is through in the middle and is provided with a groove for clamping the filter screen; the length a of the front end baffle is greater than twice the length b of the rear end baffle; a drain hole 231 is arranged on the rear end baffle 23.

[0030] The replacement part 5 is open on one side, and a sealing plug 51 is arranged at the opening; the top end of the replacement part 5 is in communication with the shell 1; the valve rod 4 is arranged in the replacement part 5, the bottom end of the replacement part 5 is provided with a through hole for the valve rod 4 to pass through, the top end of the valve rod 4 is fixedly connected to the bottom end of the rear end baffle 23, and the bottom end of the valve rod 4 extends out of the replacement part 5; a sealing seat 52 is arranged at the bottom end of the inner cavity of the replacement part 5.

[0031] The working state of the filter screen is as follows Figures 1-2As shown, the front end baffle 22 is located in the convex part 11, and the rear end baffle 23 is located at the communication position of the shell 1 and the replacement part 5. When the filter screen needs to be cleaned, the fuel cell system is closed, so that the cooling liquid is in a non-flowing state, the operator pulls the valve rod 4, drives the inner nest 2 to move downward, at this time, the cooling liquid in the replacement part 5 is squeezed by the inner nest and enters the shell 1 from the drain hole 231; after the front end baffle 22 and the sealing layer 24 are moved to the communication position of the shell 1 and the replacement part 5 and are blocked by the shell 1, the operator opens the sealing plug 51, and the filter screen is cleaned or replaced; after cleaning is completed, the sealing plug 51 is installed, the inner nest 2 is pushed back to the original position through the valve rod 4, and the work can be continued.

[0032] In summary, the inner nest and the valve rod are matched, so that the filter screen does not need to be disassembled as a whole when being cleaned, and the filter screen can be cleaned or replaced only by pulling down the inner nest to the replacement part; when the filter screen is cleaned, the front end baffle isolates the shell and the replacement part, so that the cooling liquid is prevented from flowing out; the drain hole on the rear end baffle can drain the cooling liquid in the replacement part into the shell, so that the waste of the cooling liquid is avoided.

[0033] The above is only the preferred embodiment of the utility model, and does not limit the implementation mode and protection scope of the utility model, and for those skilled in the art, it should be realized that the obtained solutions of equivalent replacement and obvious changes of the utility model specification and drawings should be included in the protection scope of the utility model.

Claims

1. A filter for a fuel cell which is easy to clean, characterized by The utility model relates to a filter screen replacement device, including: A shell (1), an inner nest (2) arranged in the shell (1), a filter screen (3) arranged in the middle of the inner nest (2), a valve rod (4) arranged at the bottom end of the inner nest (2) and a replacement part (5) arranged at the bottom end of the shell (1); Wherein, the inner nest (2) includes: an inner nest frame (21), a front end baffle (22) arranged at the top end of the inner nest frame (21) and a rear end baffle (23) arranged at the bottom end of the inner nest frame (21); the inner nest frame (21) is through in the middle and is provided with a groove for clamping the filter screen; the rear end baffle (23) is provided with a drain hole (231) on it; The replacement part (5) is communicated with the shell (1); the valve rod (4) is arranged in the replacement part (5), the top end of the valve rod (4) is fixedly connected with the bottom end of the rear end baffle (23), and the bottom end of the valve rod (4) extends out of the replacement part (5).

2. The filter for fuel cell according to claim 1, characterized by The top end of the shell (1) is provided with a convex part (11) for accommodating the front end baffle (22).

3. The filter for fuel cell according to claim 1, characterized by A sealing layer (24) is arranged between the front end baffle (22) and the inner nest frame (21).

4. The filter for fuel cell according to claim 1, characterized by The length (a) of the front end baffle is greater than twice the length (b) of the rear end baffle.

5. The filter for fuel cell according to claim 1, characterized by One side of the replacement part (5) is open, and a sealing plug (51) is arranged at the opening.

6. The filter for fuel cell according to claim 1, characterized by The bottom end of the replacement part (5) is provided with a through hole for the valve rod (4) to pass through; and a sealing seat (52) is arranged at the bottom end of the inner cavity of the replacement part (5).

7. The filter for fuel cell according to claim 1, characterized by The shell (1) is through on both sides, a water inlet pipe is connected to one side of the shell (1), and a water outlet pipe is connected to the other side.

8. The filter for fuel cell according to claim 1, characterized by The shell (1) is made of transparent material.

Images