CN218454776U - Anti-reflux device for washing tank of explosion-proof diesel engine - Google Patents

Abstract

The utility model belongs to the technical field of anti-reflux of a diesel engine washing tank, in particular to an anti-reflux device of an anti-explosion diesel engine washing tank, which comprises an anti-explosion diesel engine 6 arranged on a locomotive mounting rack and connected with an air filter element device 5, and the anti-explosion diesel engine 6 connected with a washing tank 3 through a tail gas treatment device 4; inside moisturizing room 9 and the washing room 8 of setting up of washing case 3, 8 inner chambers of washing room set up and deposit water district 11 and floater stopper 10, the utility model provides a pair of explosion-proof diesel engine washing case prevents against current device can prevent effectively that the water of washing case 3 from flowing into the inside diesel engine function that influences of diesel engine against the current, increases the security performance of locomotive, prolongs the life of diesel engine.

Description

An anti-backflow device for an explosion-proof diesel engine washing box

technical field

The utility model belongs to the technical field of backflow prevention for a washing box of a diesel engine, in particular to an anti-backflow device for a washing box of an explosion-proof diesel engine.

Background technique

With the country's emphasis on coal mine safety and the improvement of coal mine mechanized mining, the demand for explosion-proof diesel engines and their supporting coal mine equipment has increased significantly, the market demand is huge, and the market has broad prospects for development. As the power source of the locomotive, the explosion-proof diesel engine plays an important role in the locomotive. The performance of the explosion-proof diesel engine directly determines the overall performance of the locomotive.

The existing washing box plays a vital role as a part of the explosion-proof system of the whole explosion-proof diesel engine. On the one hand, it reduces the temperature of the exhaust gas to meet the requirements of coal safety certification; on the other hand, it eliminates harmful substances in the exhaust gas to purify the exhaust gas and reduce environmental pollution; Burning flammable and explosive gas in the air, causing unnecessary accidents and other advantages, but the current technology cannot effectively prevent the backflow of water in the washing tank from causing damage to the diesel engine. The existing problems are: (1) The locomotive climbs and stops When the position of the washing tank is higher than that of the diesel engine, the water in the washing tank will enter the diesel engine through the exhaust pipe; (2) When the sudden change of locomotive load causes the diesel engine to reverse, a pressure difference will be generated between the washing tank and the inside of the diesel engine, and the water will flow back into the diesel engine. After water enters the diesel engine, it will cause great damage to the diesel engine. At the least, it will emulsify the engine oil and cause the parts of the diesel engine to wear out, resulting in noise and vibration, which will seriously affect the service life of the diesel engine. When doing work, the inability to compress the water will directly lead to a series of problems such as valve and connecting rod top bending, piston stuck, middle cylinder wear and tear, crankshaft bending and so on. The anti-backflow device for the washing box of the utility model can effectively prevent the water in the washing box from flowing backward into the diesel engine to affect the function of the diesel engine, increase the safety performance of the locomotive, and prolong the service life of the diesel engine.

Utility model content

According to the above technical deficiencies, the purpose of this utility model is to provide an anti-backflow device for the washing box of an explosion-proof diesel engine, which can effectively prevent the water in the washing box from flowing back into the diesel engine and affect the function of the diesel engine, increase the safety performance of the locomotive, and prolong the service life of the diesel engine.

In order to realize above-mentioned technical effect, the utility model is realized through the following technical solutions:

The utility model provides an anti-backflow device for a water washing box of an explosion-proof diesel engine, which comprises an air filter element connected to an explosion-proof diesel engine on a locomotive mounting frame, and the explosion-proof diesel engine is connected to the water washing box through an exhaust gas treatment device; The cavity is provided with a water storage area and a float plug.

Further, the air inlet pipe is connected to the inner pipe through the air inlet pipe inlet located on the top surface of the water washing chamber, and a water storage area is arranged in the middle of the inner pipe; The float plug.

Further, the diameter of the inner cylinder is greater than the diameter of the inner tube and the diameter of the float plug, the diameter of the float plug is larger than the diameter of the inner tube, and the diameter of the float plug is 35-75mm.

Further, the lower part of the inner cylinder is sleeved in the inner cavity of the middle cylinder, the middle cylinder is fixed on the bottom surface of the washing chamber, the outer cylinder is sleeved outside the middle cylinder, and the bottom end of the outer cylinder is oppositely provided with a through hole c.

Further, the inner cylinder, the middle cylinder and the outer cylinder are all hollow cylinders; the distance between the bottom end surface of the inner cylinder and the bottom surface of the washing chamber is 50-80 mm, the diameter of the middle cylinder is 30-50 mm larger than that of the inner cylinder, and the diameter of the outer cylinder is larger than that of the middle cylinder The diameter is 30-80mm.

Further, the bottom surface of the middle cylinder is sealed with a float port, and the diameter of the float port is larger than the diameter of the float plug.

Further, a partition is arranged vertically between the replenishment chamber and the washing chamber, and the periphery of the partition is connected with the inner cavity wall of the water washing tank. A through hole a is arranged horizontally at the bottom of the partition, and a through hole b is arranged horizontally at the top of the partition.

Further, the water supply chamber is provided with a float valve, and the height of the float valve is lower than that of the water storage area.

Further, a float valve drain is provided on the bottom surface of the water supply chamber, and an exhaust channel is provided at the top of the water supply chamber, and the exhaust channel is connected to the exhaust pipe through the exhaust grille.

Compared with the prior art, the utility model provides an anti-backflow device for the washing tank of an explosion-proof diesel engine. The beneficial effects are as follows:

1. The utility model is an anti-backflow device for the washing box of an explosion-proof diesel engine, which effectively solves the problem of water backflow, reduces the failure rate of the diesel engine, prolongs its service life, improves the overall performance of the locomotive, and improves production efficiency.

2. The utility model is an anti-backflow device for the washing box of an explosion-proof diesel engine. A floating ball port is reserved at the bottom of the washing room for cleaning and replacing the floating ball plug, which is convenient for later maintenance.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a structural schematic diagram of an anti-backflow device for an explosion-proof diesel engine washing box of the present invention;

Fig. 2 is a front structural schematic view of the washing tank in Fig. 1 .

In the accompanying drawings, the list of parts represented by each label is as follows:

1-exhaust pipe; 2-intake pipe; 3-washing box; 4-exhaust gas treatment device; 5-air filter; 6-explosion-proof diesel engine; 7-radiator; 8-washing room; Float plug; 11-water storage area; 12-inner pipe; 13-outer cylinder; 14-inner cylinder; 15-middle cylinder; 16-through hole c; Through hole b; 20-float valve; 21-float valve drain; 22-exhaust channel; 23-exhaust fence; 24-baffle; 25-intake pipe inlet.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1-2, the embodiment of the present application provides an anti-backflow device for an explosion-proof diesel engine water washing box, including an explosion-proof diesel engine 6 connected to an air filter element 8 on a locomotive mounting frame, an exhaust gas treatment device 4 connected to a water washing box 3, and the locomotive starts to run At this time, the diesel engine sucks the air passing through the air filter element 8, and the diesel oil is raised to more than 10MPa through the fuel injection pump and sprayed into the cylinder. After mixing with the air, it immediately ignites and burns by itself, and at the same time, exhaust gas enters the exhaust gas treatment device 4; the exhaust gas treatment device 4. Connect to the washing tank 3, the water washing tank 3 is provided with a replenishment chamber 9 and a washing chamber 8, and the inner cavity of the washing chamber 8 is provided with a water storage area 11 and a float plug 10, and the tail gas enters the washing chamber 8 to cool down by washing, if the washing chamber 8 Excessive consumption of water in the water supply chamber 9 will replenish water for the washing chamber 8, and the water storage area 11 and the float plug 10 can prevent the water in the washing chamber 8 from flowing back to the exhaust gas treatment device 4 and the explosion-proof diesel engine 6.

The air intake pipe 2 is connected to the inner pipe 2 through the air inlet pipe inlet 25 located at the top surface of the water washing chamber 8, and the middle part of the inner pipe 12 is provided with a water storage area 11, and the upper end surface and the lower end surface of the water storage area 11 are connected to the inner pipe 12; the inner pipe 12 is connected to the inner pipe. Barrel 14, inner pipe 12 and inner barrel 14 are vertically arranged in the inner chamber of washing chamber 8, and ball float 10 is arranged in inner barrel 14. When the water level in the washing chamber rises, ball float 10 will rise together with the water level.

The diameter of the inner cylinder 14 is larger than the diameter of the inner tube 12 and the diameter of the float plug 10, the diameter of the float plug 10 is larger than the diameter of the inner tube 12, and the diameter of the float plug 10 is 35 to 75mm. Since the diameter of the float plug 10 is larger than the diameter of the inner tube 12, When the floating ball plug 10 rises to the lower port of the inner pipe 2 with the water level, the floating ball plug 10 will block the connection port between the inner cylinder 14 and the inner pipe 2, preventing the water in the washing chamber 8 from flowing back through the air inlet pipe 2. Explosion-proof diesel engine 6; the bottom surface of the middle cylinder 15 is sealed with a float port 17, and the diameter of the float port 17 is larger than that of the float plug 10. The float plug 10 is exposed to high-temperature exhaust gas for a long time and is relatively easy to damage. The area of the float plug 10 is provided with a float port 17, and the float plug 10 can be replaced by opening the float port 17.

The bottom of the inner cylinder 14 is provided with a middle cylinder 15, and the middle cylinder 15 is fixed on the bottom surface of the washing chamber 8. The outer cylinder 13 is sleeved outside the inner cylinder 14 and the middle cylinder 15, and the bottom of the outer cylinder 13 is oppositely provided with a through hole c16. 14. Both the middle cylinder 15 and the outer cylinder 13 are hollow cylinders; the distance between the bottom end surface of the inner cylinder 14 and the bottom surface of the washing chamber 8 is 50-80mm, the diameter of the middle cylinder 15 is 30-50mm larger than that of the inner cylinder 14, and the diameter of the outer cylinder 13 It is 30-80 mm larger than the diameter of the middle cylinder 15 . After the exhaust gas enters the water washing chamber 8 through the intake pipe 2 and the inner pipe 12, the exhaust gas first enters the inner cylinder 14, enters the middle cylinder 15 through the gap between the bottom end of the inner cylinder 14 and the bottom end surface of the water washing chamber 8, and then passes through the top surface of the middle cylinder 15. The opening enters the outer cylinder 13, and finally enters the washing chamber from the opening at the top of the outer cylinder 13; a partition 24 is vertically arranged between the replenishment chamber 9 and the washing chamber 8, and the partition 24 is connected with the inner cavity wall of the water washing box 3 around the partition. The bottom end of 24 is horizontally provided with a through hole a18, and the top of the dividing plate 24 is horizontally provided with a through hole b19. Most of the waste gas in the washing chamber enters the water replenishment chamber 9 through the through hole a18, and a small part escapes into the water replenishment chamber 9 through the through hole b19; the through hole a18 The replenishment chamber 9 and the washing chamber 8 are connected so that the water levels of the two are at the same level, and the through hole b19 can play the role of balancing the air pressure between the two.

The replenishment chamber is provided with a ball float valve 20, the height of which is lower than that of the water storage area 11, and the ball float valve 20 can control the water level in the entire washing tank 3 to not exceed the height of the ball float valve; the bottom surface of the replenishment chamber 9 is provided with a ball float valve outlet 21 , the float valve drain port 21 can discharge the water inside the washing tank 3; the top of the replenishment chamber 9 inner cavity is provided with an exhaust passage 22, and the exhaust passage 22 is connected to the exhaust pipe 1 through the exhaust grille 23, and enters the replenishment water from the washing chamber 8 The waste gas in the chamber 9 is discharged into the atmosphere through the exhaust passage 22, the exhaust grille 23 and the exhaust pipe 1 in sequence, wherein the exhaust grille 23 plays a role of fire resistance, preventing the exhaust gas from contacting with air in the process of discharging and causing a fire; Exhaust gas treatment device 4 and intake pipe 2 are both double-layer pipes, radiator 7 is connected to the outer pipe, explosion-proof diesel engine 6 is connected to the inner pipe, and the liquid in the radiator 7 forms a backflow with the outer pipe, which is continuously produced by the explosion-proof diesel engine 6. Exhaust air cooling.

When the locomotive climbs and stops, the position of the washing tank 3 is higher than the explosion-proof diesel engine 6, resulting in a height difference, causing the liquid level on the right side of the washing tank 3 to rise, and the float plug 10 rises with the rising of the liquid level and blocks the inner cylinder 14 and If a small amount of water passes through the connection port of the inner pipe 12, it can be stored in the water storage area 11 to prevent water from entering the explosion-proof diesel engine 6 through the exhaust gas treatment device 4; 6 internal pressure difference, the internal atmospheric pressure of the washing tank 3 is greater than the internal atmospheric pressure of the explosion-proof diesel engine 6, the floating ball plug 10 rises with the liquid level in the inner cylinder 14, and the floating ball plug seals the connection port between the inner cylinder 14 and the inner pipe 12 to prevent water from flowing backward Into the explosion-proof diesel engine 6. The anti-backflow device of the explosion-proof diesel engine washing box effectively solves the problem of water backflow, reduces the failure rate of the diesel engine, prolongs its service life, improves the overall performance of the locomotive, and improves production efficiency.

The above-mentioned embodiments are only described to the preferred implementation of the utility model, and are not limited to the scope of the utility model. Various modifications and improvements made should fall within the scope of protection determined by the claims of the device of the present invention.

Claims (9)

1. an anti-backflow device for an explosion-proof diesel engine water washing box, characterized in that: an explosion-proof diesel engine (6) is connected to an air filter element (5) on the locomotive mounting frame, and the explosion-proof diesel engine (6) passes through an exhaust gas treatment device (4) Connect the water washing box (3); the inside of the water washing box (3) is provided with a replenishment chamber (9) and a water washing chamber (8), and the inner cavity of the water washing chamber (8) is provided with a water storage area (11) and a float plug (10 ). 2. An explosion-proof diesel engine water washing tank anti-backflow device according to claim 1, characterized in that: the air intake pipe (2) is connected to the inner pipe (12) through the air intake pipe inlet (25) located on the top surface of the water washing chamber (8) , the middle part of the inner pipe (12) is provided with a water storage area (11); the inner pipe (12) is connected to the inner cylinder (14), and the inner pipe (12) and the inner cylinder (14) are vertically arranged on The water washing chamber (8) has an inner cavity, and the float plug (10) is arranged in the inner cylinder (14). 3. An explosion-proof diesel engine water washing tank anti-backflow device according to claim 2, characterized in that: the diameter of the inner cylinder (14) is larger than the diameter of the inner tube (12) and the diameter of the float plug (10) , the diameter of the float plug (10) is larger than the diameter of the inner tube (12), and the diameter of the float plug (10) is 35-75mm. 4. An explosion-proof diesel engine water washing tank anti-backflow device according to claim 2, characterized in that: the lower part of the inner cylinder (14) is sleeved in the inner cavity of the middle cylinder (15), and the middle cylinder (15) is fixed On the bottom end surface of the washing chamber (8), an outer cylinder (13) is sheathed outside the middle cylinder (15), and a through hole c (16) is provided opposite to the bottom end of the outer cylinder (13). 5. An explosion-proof diesel engine water washing tank anti-backflow device according to claim 4, characterized in that: the inner cylinder (14), the middle cylinder (15) and the outer cylinder (13) are all cavities Cylinder; the distance between the bottom end surface of the inner cylinder (14) and the bottom end surface of the washing chamber (8) is 50-80mm, and the diameter of the middle cylinder (15) is 30-50mm larger than the diameter of the inner cylinder (14), The diameter of the outer cylinder (13) is 30-80 mm larger than that of the middle cylinder (15). 6. An explosion-proof diesel engine water washing tank anti-backflow device according to claim 4, characterized in that: the bottom surface of the middle cylinder (15) is sealed with a floating ball port (17), and the diameter of the floating ball port (17) is It is larger than the diameter of the float plug (10). 7. An explosion-proof diesel engine water washing tank anti-backflow device according to claim 1, characterized in that: a partition (24) is vertically arranged between the water replenishment chamber (9) and the water washing chamber (8), and the The surroundings of the partition (24) are connected with the inner cavity wall of the washing tank (3), the bottom of the partition (24) is provided with a through hole a (18) horizontally, and the top of the partition (24) is provided with a through hole horizontally b(19). 8. An explosion-proof diesel engine water washing tank anti-backflow device according to claim 1, characterized in that: the water supply chamber is provided with a float valve (20), and the height of the float valve (20) is lower than that of the water storage area ( 11) Height. 9. An explosion-proof diesel engine water washing tank anti-backflow device according to claim 1, characterized in that: the bottom surface of the water replenishment chamber (9) is provided with a float valve drain (21), and the inner cavity of the water replenishment chamber (9) An exhaust channel (22) is arranged at the top, and the exhaust channel (22) is connected to the exhaust pipe (1) through an exhaust grille (23).

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