Automatic purging method for brake valve

Abstract

The invention provides a brake valve automatic purging method, which belongs to the technical field of brake valve purging, and comprises the following steps: S1, blowing compressed air into a fifth hole C and a fifth hole D in the mounting surface of a main valve lower cover; s2, compressed air is blown into a first hole D in the main valve mounting surface, and then compressed air is blown into a first hole B and a first hole E in the main valve mounting surface; s3, compressed air is blown into a second hole A, a second hole D and a second hole E in the release valve mounting surface, and then compressed air is blown into a second hole B in the release valve mounting surface; and S4, compressed air is blown into a fourth hole A, a fourth hole B, a fourth hole C and a fourth hole D in the mounting surface of the main valve front cover. According to the automatic purging method for the brake valve, residual water spots on the inner hole path of the brake valve, which is purged by the method, can be effectively removed, the purging quality of the inner hole path of the brake valve is ensured, the purging efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of brake valve purging, and more specifically, relates to an automatic purging method for a brake valve. Background Art

[0002] The 120-type air control valve (hereinafter referred to as the 120 valve) uses water to clean the impurities inside the valve body when it is newly manufactured and overhauled: First, the sliding valve seat needs to be ground when the 120 valve is newly manufactured. The copper chips produced by grinding will enter the valve body through the inner hole of the sliding valve seat and need to be cleaned with water; second, during the operation of the 120 valve, impurities will enter the valve body with high-pressure air. During maintenance, the impurities entering the valve body need to be removed and cleaned with water. However, water stains are not allowed to remain inside the valve body. Therefore, after the impurity cleaning is completed, the water stains remaining inside the valve body need to be cleaned.

[0003] At present, there are two main methods for removing water stains: one is to use hot drying to dry water stains, and the other is to use high-pressure air blowing to remove water stains, which is more widely used. Since the "Railway Freight Car Brake Maintenance Rules" require that the drying temperature of each part shall not exceed 60°C, the drying efficiency and drying quality are not easy to guarantee. In view of the above analysis, this study on the method of cleaning water stains inside the valve body takes high-pressure air blowing as the research direction, takes automatic blowing to replace manual blowing as the research goal, and takes the automatic blowing quality not lower than the current manual blowing quality as the judgment basis to carry out the research on the automatic blowing process of the inner cavity of the 120 valve, and form an automatic blowing method for the brake valve. Summary of the invention

[0004] The purpose of the present invention is to provide an automated purging method for a brake valve, aiming to provide an efficient, stable and convenient method for cleaning water stains in the holes in a valve body, effectively removing residual water stains inside the valve body and ensuring the cleanliness of the interior of the valve body.

[0005] To achieve the above object, the technical method adopted by the present invention is: to provide a brake valve automatic purging method, comprising the following steps: S1: Blow compressed air into the fifth C hole and the fifth D hole on the mounting surface of the main valve lower cover; S2: Blow compressed air into the first D hole on the main valve installation surface, and then blow compressed air into the first B hole and the first E hole on the main valve installation surface; S3: Blow compressed air into the second A hole, the second D hole and the second E hole on the relief valve installation surface, and then blow compressed air into the second B hole on the relief valve installation surface; S4: Blow compressed air into the fourth A hole, the fourth B hole, the fourth C hole and the fourth D hole on the installation surface of the main valve front cover.

[0006] In a possible implementation, in step S1 , compressed air is blown into the fifth C hole and the fifth D hole simultaneously for 15 seconds.

[0007] In a possible implementation, in step S2, before blowing compressed air into the first hole D, first block eight air outlets, namely the third hole B, the fourth hole A, the fifth hole B, the fifth hole D, the second hole C, the first hole E, the fourth hole B and the fifth hole A, and blow compressed air into the first hole D for 20 seconds. Then, open the third hole B, the fourth hole A, the fifth hole B, the fifth hole D, the second hole C, the first hole E, the fourth hole B and the fifth hole A in sequence, and each air outlet is opened for 15 seconds.

[0008] In a possible implementation, in step S2, compressed air is blown into the first B hole and the first E hole on the main valve mounting surface in sequence, each for 15 seconds, while the first A hole is kept connected to the atmosphere.

[0009] In a possible implementation, in step S3, before blowing compressed air into the second A hole, the second D hole and the second E hole, the third A hole, the first C hole, the first F hole and the fifth C hole are first blocked, and compressed air is blown into the second A hole, the second D hole and the second E hole at the same time for 15 seconds; then the fourth D hole is blocked, and compressed air is continued to be blown into the second A hole, the second D hole and the second E hole at the same time for 15 seconds; then the first C hole, the first F hole and the fifth C hole are opened, and compressed air is continued to be blown into the second A hole, the second D hole and the second E hole at the same time for 20 seconds; the third A hole is opened and compressed air is blown into it at the same time for 10 seconds, and finally compressed air is blown into the second B hole for 10 seconds.

[0010] In a possible implementation, in step S4, compressed air is blown into the fourth A hole, the fourth B hole, the fourth C hole, and the fourth D hole simultaneously for 20 seconds.

[0011] The beneficial effect of the automatic purging method for brake valves provided by the present invention is that: compared with the prior art, the main valve lower cover mounting surface, the main valve mounting surface, the relief valve mounting surface and the main valve front cover mounting surface are used as the purging working surfaces, and compressed air is used to blow air to different holes on the same mounting surface. Due to the complex structure of the hole connection and the large number of outlets, air is blown to different mounting surfaces in turn to clean the water stains in each hole and remove the residual water stains inside the valve body to meet the cleanliness requirements. Purging by this purging method can complete the purging of all holes in the valve body and achieve the purpose of completely clearing the holes in the valve body. The design of this purging method comprehensively considers multiple aspects such as purging efficiency, purging quality, simplicity of purging equipment, etc., and can complete the purging of the holes in the valve body quickly, efficiently and with high quality. This purging method considers the single channel of hole purge, reduces the energy loss of high-pressure wind, and improves the effect of high-pressure wind purge. This method is aimed at the development of automatic purge equipment for the inner holes of the brake valve. The inner holes of the brake valve purged by this method can effectively remove residual water stains, ensure the quality of the purge of the inner holes of the brake valve, improve the purge efficiency, and reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical methods in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A schematic diagram of the structure of the main valve installation surface provided by the present invention; Figure 2 A schematic diagram of the structure of the relief valve installation surface provided by the present invention; Figure 3 A schematic diagram of the structure of the main valve upper cover installation surface provided by the present invention; Figure 4 A schematic diagram of the structure of the installation surface of the main valve front cover provided by the present invention; Figure 5 A schematic diagram of the structure of the main valve lower cover mounting surface provided by the present invention; Figure 6 The present invention provides a flow chart of the automatic purging method for brake valves.

[0014] In the figure: 100, main valve installation surface; 101, first A hole; 102, first B hole; 103, first C hole; 104, first D hole; 105, first E hole; 106, first F hole; 200, relief valve mounting surface; 201, second A hole; 202, second B hole; 203, second C hole; 204, second D hole; 205, second E hole; 300, main valve upper cover mounting surface; 301, third A hole; 302, third B hole; 400, main valve front cover mounting surface; 401, fourth A hole; 402, fourth B hole; 403, fourth C hole; 404, fourth D hole; 500, main valve lower cover mounting surface; 501, fifth A hole; 502, fifth B hole; 503, fifth C hole; 504, fifth D hole. DETAILED DESCRIPTION

[0015] In order to make the technical problems, technical methods and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] Unless explicitly defined otherwise, the use of terms such as "first," "second," or "third," etc., are intended to distinguish different objects rather than to describe a specific order.

[0017] Unless otherwise expressly defined, directional words such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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, so they cannot be understood as limiting the specific scope of protection of the present invention.

[0018] See also Figures 1 to 6 Now, an automatic purging method for a brake valve provided by the present invention is described. The automatic purging method for a brake valve comprises the following steps: S1: Blow compressed air into the fifth C hole 503 and the fifth D hole 504 on the main valve lower cover mounting surface 500; S2: Blow compressed air into the first D hole 104 on the main valve installation surface 100, and then blow compressed air into the first B hole 102 and the first E hole 105 on the main valve installation surface 100; S3: Blow compressed air into the second A hole 201, the second D hole 204 and the second E hole 205 on the relief valve installation surface 200, and then blow compressed air into the second B hole 202 on the relief valve installation surface 200; S4: Blow compressed air into the fourth A hole 401 , the fourth B hole 402 , the fourth C hole 403 , and the fourth D hole 404 on the main valve front cover mounting surface 400 .

[0019] Compared with the prior art, the present invention provides an automated purging method for brake valves. The main valve lower cover mounting surface 500, the main valve mounting surface 100, the relief valve mounting surface 200 and the main valve front cover mounting surface 400 are used as purging working surfaces. Compressed air is used to blow air to different holes on the same mounting surface. Due to the complex structure of the hole connection and the large number of outlets, air is blown to different mounting surfaces in sequence to clean water stains in each hole and remove residual water stains inside the valve body to meet the cleanliness requirements. Purging by this purging method can complete the purging of all holes in the valve body and achieve the purpose of completely clearing the holes in the valve body. The design of this purging method comprehensively considers multiple aspects such as purging efficiency, purging quality, simplicity of purging equipment, etc., and can complete the purging of holes in the valve body quickly, efficiently and with high quality. This purging method considers the single channel of hole purge, reduces the energy loss of high-pressure wind, and improves the effect of high-pressure wind purge. This method is aimed at the development of automatic purge equipment for the inner holes of the brake valve. The inner holes of the brake valve purged by this method can effectively remove residual water stains, ensure the quality of the purge of the inner holes of the brake valve, improve the purge efficiency, and reduce labor costs.

[0020] In step S1, compressed air is blown into the fifth C hole 503 and the fifth D hole 504 simultaneously for 15 seconds, thereby completing the cleaning of water stains in the fifth C hole 503 and the fifth D hole 504, and finally completing the cleaning of water stains on the hole path on the main valve lower cover installation surface 500.

[0021] In step S2, before blowing compressed air into the first D hole 104, eight air outlets, namely the third B hole 302, the fourth A hole 401, the fifth B hole 502, the fifth D hole 504, the second C hole 203, the first E hole 105, the fourth B hole 402 and the fifth A hole 501, are blocked first, and compressed air is blown into the first D hole 104 for 20 seconds. Then, the third B hole 302, the fourth A hole 401, the fifth B hole 502, the fifth D hole 504, the second C hole 203, the first E hole 105, the fourth B hole 402 and the fifth A hole 501 are opened in sequence. The opening time of each air outlet is 15 seconds, and the total opening time is 140 seconds. Then, the water stains in the first D hole 104 are cleaned, as well as the water stains in each hole path of the third B hole 302, the fourth A hole 401, the fifth B hole 502, the fifth D hole 504, the second C hole 203, the first E hole 105, the fourth B hole 402 and the fifth A hole 501 connected to the first D hole 104.

[0022] In addition, in step S2, compressed air is blown into the first B hole 102 and the first E hole 105 on the main valve installation surface 100 in turn, with a duration of 15 seconds each and a total of 30 seconds. The order of the two can be swapped. While blowing compressed air into the first B hole 102 and the first E hole 105, the first A hole 101 is kept connected to the atmosphere, thereby completing the cleaning of water stains on the first B hole 102 and the first E hole 105, and completing the cleaning of water stains on the connecting hole path between the first B hole 102 and the first A hole 101 and the cleaning of water stains on the connecting hole path between the first E hole 105 and the first A hole 101, and finally completing the cleaning of water stains on the hole path on the main valve installation surface 100.

[0023] In step S3, before blowing compressed air into the second A hole 201, the second D hole 204 and the second E hole 205, the third A hole 301, the first C hole 103, the first F hole 106 and the fifth C hole 503 are first blocked, and compressed air is blown into the second A hole 201, the second D hole 204 and the second E hole 205 at the same time for 15 seconds, thereby completing the cleaning of water stains in the second A hole 201, the second D hole 204 and the second E hole 205, and completing the cleaning of water stains in the connecting holes of the second A hole 201, the second D hole 204 and the second E hole 205 and the fourth D hole 404. Then, the fourth D hole 404 is blocked, and compressed air is blown into the second A hole 201, the second D hole 204 and the second E hole 205 simultaneously for 15 seconds; then, the first C hole 103, the first F hole 106 and the fifth C hole 503 are opened, and compressed air is blown into the second A hole 201, the second D hole 204 and the second E hole 205 simultaneously for 20 seconds, thereby completing the water stain removal of the connecting holes between the second A hole 201, the second D hole 204 and the second E hole 205 and the first C hole 103, the first F hole 106 and the fifth C hole 503. The third A hole 301 is opened to blow compressed air for 10 seconds, and finally, compressed air is blown into the second B hole 202 for 10 seconds, and finally, the water stain removal of the holes on the relief valve installation surface 200 is completed.

[0024] In step S4 , compressed air is blown into the fourth A hole 401 , the fourth B hole 402 , the fourth C hole 403 and the fourth D hole 404 simultaneously for 20 seconds, and finally the water stains on the holes on the main valve front cover mounting surface 400 are cleared.

[0025] The total time required to complete the above-mentioned automated purging method for the brake valve is 260 seconds, or 4.3 minutes. This purging method can be used to purge the brake valve, and all the holes in the valve body can be purged, so as to achieve the purpose of completely removing water stains in the holes in the valve body. The design of this purging method comprehensively considers multiple aspects such as purging efficiency, purging quality, and simplicity of purging equipment, and can complete the purging of the holes in the valve body quickly, efficiently, and with high quality. The above-mentioned purging method uses high-pressure air to purge the water stains inside the valve body, avoiding damage to the valve body caused by the increase in thermal drying temperature. The high-pressure air hole blocking method is carried out to effectively avoid the problem of energy loss during high-pressure air purging, and greatly improves the purging quality. This method is suitable for the development of automated equipment, saving manpower, time, and effort, and can automatically complete the entire purging process. The purging process is efficient and stable.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A brake valve automatic purging method, characterized in that: The following steps are involved: S1: Blowing compressed air into the fifth C hole (503) and the fifth D hole (504) on the mounting surface (500) of the main valve lower cover; S2: Blowing compressed air into the first D hole (104) on the main valve mounting surface (100), and then blowing compressed air into the first B hole (102) and the first E hole (105) on the main valve mounting surface (100); S3: Blowing compressed air into the second A hole (201), the second D hole (204) and the second E hole (205) on the relief valve installation surface (200), and then blowing compressed air into the second B hole (202) on the relief valve installation surface (200); S4: Blow compressed air into the fourth A hole (401), the fourth B hole (402), the fourth C hole (403) and the fourth D hole (404) on the main valve front cover mounting surface (400).

2. A brake valve automatic purging method as claimed in claim 1, characterized in that: In step S1, compressed air is blown into the fifth C hole (503) and the fifth D hole (504) simultaneously for 15 seconds.

3. The automatic purging method for brake valves according to claim 1, characterized in that: In step S2, before blowing compressed air into the first D hole (104), eight air outlets, namely the third B hole (302), the fourth A hole (401), the fifth B hole (502), the fifth D hole (504), the second C hole (203), the first E hole (105), the fourth B hole (402) and the fifth A hole (501), are first blocked, and compressed air is blown into the first D hole (104) for 20 seconds. Thereafter, the third B hole (302), the fourth A hole (401), the fifth B hole (502), the fifth D hole (504), the second C hole (203), the first E hole (105), the fourth B hole (402) and the fifth A hole (501) are opened in sequence, and the opening time of each air outlet is 15 seconds.

4. The automatic purging method for brake valves according to claim 3, characterized in that: In step S2, compressed air is blown into the first B hole (102) and the first E hole (105) on the main valve mounting surface (100) in sequence, each for 15 seconds, while keeping the first A hole (101) connected to the atmosphere.

5. The automatic purging method for brake valves according to claim 1, characterized in that: In step S3, before blowing compressed air into the second A hole (201), the second D hole (204) and the second E hole (205), the third A hole (301), the first C hole (103), the first F hole (106) and the fifth C hole (503) are first blocked, and compressed air is blown into the second A hole (201), the second D hole (204) and the second E hole (205) simultaneously for 15 seconds; then the fourth D hole (404) is blocked, and compressed air is continued to be blown into the second A hole (201), the second D hole (204) and the second E hole (205) simultaneously for 15 seconds; then the first C hole (103), the first F hole (106) and the fifth C hole (503) are opened, and compressed air is continued to be blown into the second A hole (201), the second D hole (204) and the second E hole (205) simultaneously for 20 seconds; The third A hole (301) is opened and compressed air is blown in for 10 seconds, and finally the second B hole (202) is blown in with compressed air for 10 seconds.

6. The automatic purging method for brake valves according to claim 1, characterized in that: In step S4, compressed air is blown into the fourth A hole (401), the fourth B hole (402), the fourth C hole (403) and the fourth D hole (404) simultaneously for 20 seconds.

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