Closed expansion water tank and cleaning method thereof

Abstract

The invention provides a closed expansion water tank and a cleaning method thereof, and relates to the technical field of expansion water tanks, the closed expansion water tank comprises a tank body, the tank body is divided into four cavities through three partition plates with holes in the tank body, an access hole is machined in an upper panel of the tank body, a flange is welded to the access hole, and the access hole is blocked through a cover plate. The cleaning method comprises the steps that sodium bicarbonate is made into 30-120-mesh composite material crystal particles through a special technology, and the hardness of the crystal particles is Morse 2.3-3.0; the crystal particles are driven by air pressure through an access hole formed in the upper portion of the tank body, and dirt is removed from the interior of the expansion water tank through blasting, impact, friction, stripping and cutting generated at the moment of collision in a physical flexible striking mode. A new cleaning technology is adopted, the scrapped expansion water tank is recycled, and recycling of waste products is achieved; no dust is generated in the cleaning process, and food-grade products are free of chemical pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion water tanks, and in particular to a closed expansion water tank and a cleaning method thereof. Background Art

[0002] The expansion water tank is installed in the cooling water system of diesel locomotives. It is mainly used to store and compensate cooling water, ensure positive pressure before the pump, exhaust the system, and provide space for thermal expansion and contraction. The expansion water tank of HXN3 diesel locomotive is a box with a length of 1698mm, a width of 354mm, and a height of 845mm. Three partitions with holes are used inside to divide the water tank into four chambers.

[0003] The existing cleaning solution uses immersion and high-pressure water flushing. Since the expansion water tank is a closed water tank, the high-pressure water gun can only directly flush cavities 2, 3, and 4. Cavity 4 is cleaned from the pressure regulating valve port and is fully cleaned with an angled high-pressure water gun. Cavities 2 and 3 need to be cleaned through the water supply pipe below. Due to the diameter and length of the pipe, only the upper 2 / 3 of the water tank can be cleaned, and the lower 1 / 3 is cleaned by immersion and water flow. Cavity 1 is completely cleaned by immersion and water flow.

[0004] The existing cleaning methods have the following technical problems: 1) After more than ten years of use, there is a lot of sludge deposits inside the water tank of the locomotive. After cleaning with traditional methods, the cleanliness requirements cannot be met; 2) The cleaning agent used during cleaning and the disposal cost of the waste hazardous solution are very high; 3) The operation needs to be carried out at a designated location, and the processing time is long; 4) After the expansion water tank is cleaned, the drainage is not smooth, and water is easily accumulated inside, causing rust on the inner wall of the water tank; 5) The closed expansion water tank cannot be cleaned and maintained on a daily basis after being disassembled from the vehicle.

[0005] This application focuses on the technical problem of difficult cleaning, and improves the original expansion water tank from the aspects of improving product maintenance quality, improving work efficiency, environmental protection and driving safety, and designs an environmentally friendly and clean cleaning solution and a maintainable expansion water tank structure. Summary of the invention

[0006] According to the above technical problem that the existing closed water tank is difficult to clean, a closed expansion water tank and a cleaning method thereof are provided. The present invention mainly improves the original expansion water tank, cleans the water tank with composite material crystal particles, adopts new cleaning technology, reuses the scrapped expansion water tank, and realizes the recycling of waste products.

[0007] The technical means adopted by the present invention are as follows:

[0008] A closed expansion water tank comprises a tank body, wherein the tank body is divided into four chambers by three perforated partitions, a pressure valve and a water replenishing port are arranged on the upper side of one side of the tank body, an inspection port is processed on the upper panel of the tank body, a flange is welded to the inspection port, and the inspection port is blocked by a cover plate.

[0009] Furthermore, the cover plate is processed with a milling hole, and the fastening bolts pass through the milling hole to set the cover plate on the flange through the gasket.

[0010] Furthermore, a sealing gasket is provided between the flange and the cover plate.

[0011] Furthermore, steel trough assemblies are respectively provided on the upper and lower inner walls of both sides of the box body for lateral support, and mounting supports are provided on both sides and the lower end of the outer wall of the box body for installing the water tank in the cooling water system of the diesel engine of a diesel locomotive.

[0012] Furthermore, two water replenishment ports are symmetrically arranged at the bottom of the second cavity of the box body, and a plurality of water replenishment ports are also arranged on the front panel of the box body.

[0013] Furthermore, the box body is formed by welding eight panels, and the upper panel and the rear panel of the box body are an integrated structure.

[0014] The present invention also provides a method for cleaning a closed expansion water tank, comprising:

[0015] The sodium bicarbonate is formed into 30-120 mesh composite material crystal particles by a special process, and the hardness of the crystal particles is 2.3-3.0 on the Mohs scale;

[0016] Through the inspection port opened on the top of the tank, the high-pressure air in the air gun is used to drive the crystal particles, and the dirt is removed from the inside of the expansion water tank by the explosion, impact, friction, peeling and cutting generated at the moment of collision in a physical flexible impact manner.

[0017] Furthermore, the crystal particles are made from food baking soda, have a pH value of 8.3, are soluble in water and can be discharged.

[0018] Furthermore, the crystal particle waste can be dissolved, filtered, recrystallized, and used again.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] New cleaning technology is used to reuse the scrapped expansion tanks and recycle the waste products. At the same time, the waste products are upgraded and renovated to improve the maintainability of the products themselves.

[0021] There is no dust during the cleaning process, and food-grade products have no chemical pollution;

[0022] The crystals are made of food baking soda, PH 8.3, soluble in water, and can be discharged; the waste can be dissolved, filtered, recrystallized, and used again;

[0023] After cleaning, no impurities remain, extending the service life of the locomotive water pump; non-destructive: the crystal hardness is low (Mohs 2.3-3.0), which can remove attachments on the workpiece surface without damaging the workpiece surface; safe: when crystal particles collide with the workpiece, no sparks or static electricity are generated; the output pressure is low during operation and will not hurt people; efficient: compared with chemical cleaning, the efficiency is increased by dozens of times. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a schematic diagram of the box structure of the present invention.

[0026] Figure 2 It is the front view of the box structure in the present invention.

[0027] Figure 3 It is a top view of the box structure in the present invention.

[0028] Figure 4 It is a schematic diagram of the cover plate structure in the present invention.

[0029] Figure 5 It is a schematic diagram of the opening structure of the upper cover plate in the present invention.

[0030] Figure 6 It is a schematic diagram of the welding flange and sealing gasket structure in the present invention.

[0031] In the figure: 1. Box body; 2. Perforated partition; 3. Water supply port; 4. Pressure valve; 5. Flange; 6. Cover plate; 7. Fastening bolts; 8. Washer; 9. Sealing gasket; 10. Steel trough assembly; 11. Installation support. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0037] like Figure 1-6As shown, the present invention provides a closed expansion water tank, including a box body 1, which is welded by eight panels, and the upper panel and the rear panel of the box body 1 are an integrated structure. The box body 1 is divided into four cavities by three perforated partitions 2 in the box body 1, and a pressure valve 4 and a water replenishment port 3 are arranged on the upper side of the box body 1. An inspection port is processed on the upper panel of the box body 1, and a flange 5 is welded on the inspection port, and the inspection port is blocked by a cover plate 6. Ensure the sealing of the expansion water tank.

[0038] The cover plate 6 is processed with a milling hole, and the fastening bolts 7 pass through the milling hole and are set on the flange 5 through the gasket 8; a sealing gasket 9 is set between the flange 5 and the cover plate 6.

[0039] Steel trough assemblies 10 are respectively provided on the upper and lower inner walls of both sides of the box body 1 for lateral support, and mounting supports 11 are provided on both sides and the lower end of the outer wall of the box body 1 for installing the water tank in the cooling water system of the diesel engine of a diesel locomotive.

[0040] Two water replenishment ports 3 are symmetrically arranged at the bottom of the second cavity of the box body 1 , and a plurality of water replenishment ports 3 are also arranged on the front panel of the box body 1 .

[0041] A method for cleaning a closed expansion water tank, dissolving food-grade sodium bicarbonate and crystallizing it into 30-120 mesh composite material crystal particles (Mohs hardness 2.3-3.0) by a special process. The crystal particles are driven by high-pressure air in an air gun (sandblasting equipment) and the dirt (paint, rust, carbon deposits, oil stains, dust, etc.) is removed from the inside of the expansion water tank by physical flexible impact, explosion, impact, friction, peeling, cutting, etc. generated at the moment of collision.

[0042] Environmental protection: The abrasive is made of food baking soda, PH8.3, soluble in water, and can be discharged; it reduces the generation of more than 95% of hazardous waste; waste can be recrystallized and used;

[0043] Non-destructive: Abrasive particles have low hardness (Mohs 2.3-3.0), which can remove the attachments on the workpiece surface without damaging the workpiece surface;

[0044] Safety: When abrasive particles collide with the workpiece, no sparks or static electricity are generated; the output pressure is low during operation and no injuries are caused;

[0045] High efficiency: Compared with chemical cleaning, the efficiency is increased by dozens of times.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A closed expansion water tank, characterized in that: The invention comprises a box body (1), wherein the box body (1) is divided into four chambers by three perforated partitions (2), a pressure valve (4) and a water supply port (3) are arranged on the upper side of one side of the box body (1), an inspection port is processed on the upper panel of the box body (1), a flange (5) is welded to the inspection port, and the inspection port is blocked by a cover plate (6).

2. The closed expansion water tank according to claim 1, characterized in that: The cover plate (6) is processed with a milling hole, and the fastening bolts (7) pass through the milling hole and the cover plate (6) is set on the flange (5) through the gasket (8).

3. The closed expansion water tank according to claim 2, characterized in that: A sealing gasket (9) is provided between the flange (5) and the cover plate (6).

4. The closed expansion water tank according to claim 1, characterized in that: The inner walls on both sides of the box body (1) are respectively provided with steel trough assemblies (10) for lateral support, and the outer walls on both sides and the lower end of the box body (1) are provided with mounting supports (11) for mounting the water tank in a cooling water system of a diesel engine of a diesel locomotive.

5. The closed expansion water tank according to claim 1, characterized in that: Two water replenishment ports (3) are symmetrically arranged at the bottom of the second cavity of the box body (1), and a plurality of water replenishment ports (3) are also arranged on the front panel of the box body (1).

6. The closed expansion water tank according to claim 1, characterized in that: The box body (1) is formed by welding eight panels, and the upper panel and the rear panel of the box body (1) are an integrated structure.

7. A method for cleaning a closed expansion water tank, based on the closed expansion water tank according to any one of claims 1 to 6, characterized in that: include: The sodium bicarbonate is formed into 30-120 mesh composite material crystal particles by a special process, and the hardness of the crystal particles is 2.3-3.0 on the Mohs scale; Through the inspection port opened on the top of the box body (1), the high-pressure air in the air gun is used to drive the crystal particles, and the dirt is removed from the inside of the expansion water tank by the explosion, impact, friction, peeling and cutting generated at the moment of collision in a physical flexible impact manner.

8. The method for cleaning a closed expansion water tank according to claim 7, characterized in that: The crystal particles are made of food baking soda, have a pH value of 8.3, are soluble in water and can be discharged.

9. The method for cleaning a closed expansion water tank according to claim 7, characterized in that: Waste crystal particles can be dissolved, filtered, recrystallized and used again.

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