Special manual reversing tool for spring reset type electromagnetic reversing valve

Abstract

The utility model relates to a special manual reversing tool for a spring reset type electromagnetic reversing valve, and belongs to the technical field of electromagnetic reversing valve maintenance equipment in the metallurgical industry. According to the technical scheme, the device comprises a nut (1), a pipe body (2), a push rod (3), a guide block (4), a spring (5) and a check block (6), the guide block (4), the spring (5) and the check block (6) are arranged in the pipe body (2), the spring (5) is located between the guide block (4) and the check block (6), the nut (1) is in threaded connection with one end of the pipe body (2), and the push rod (3) penetrates through the check block (6) and the spring (5) from the other end of the pipe body (2) to be connected with the guide block (4); the guide block (4) and the check block (6) are both cylindrical and matched with the pipe body (2), and the check block (6) is in threaded connection with the pipe body (2). The spring reset type electromagnetic reversing valve has the advantages that the spring reset type electromagnetic reversing valve can be reversed under the condition that the spring reset type electromagnetic reversing valve is not powered on and can be kept at the reversing position for a long time.

Description

Technical Field

[0001] The utility model relates to a special tool for manual reversing of a spring-reset electromagnetic reversing valve, belonging to the technical field of electromagnetic reversing valve maintenance equipment in the metallurgical industry. Background Art

[0002] Refer to the attached Figure 10 , 11 The common spring-reset electromagnetic reversing valve mainly includes a valve body 7, an electromagnet 8, a fixing cap 9, a fault check button 10 and a guide sleeve 11, which are widely used in hydraulic equipment in cold rolling mills. These spring-reset electromagnetic reversing valves often fail for unknown reasons and cannot be switched normally. In the past, when the electromagnetic reversing valve failed and could not be switched normally, the traditional practice was generally: first, the hydraulic inspection personnel pressed the fault check button 10 with a screwdriver to detect whether the electromagnetic reversing valve can be switched. If the fault check button 10 can be switched normally by pressing the screwdriver, the fault point can be ruled out as being caused by the electromagnetic reversing valve itself. Next, the electrical personnel began to check whether the wire plug was loosely connected, had poor contact, and other reasons. The troubleshooting time is generally long. If the mill is stopped for processing, the production rhythm of the rolling mill will be seriously affected.

[0003] Therefore, how to realize the reversing of the spring return electromagnetic reversing valve and keep it in the reversing position for a long time without affecting normal production, so that the electrical personnel can handle it thoroughly when the vehicle is stopped for a long time, is an urgent problem that technical personnel in this field need to solve. Utility Model Content

[0004] The utility model aims to provide a special tool for manual reversing of a spring-reset electromagnetic reversing valve, so as to realize the reversing of the spring-reset electromagnetic reversing valve without electricity and solve the problems existing in the background technology.

[0005] The technical solution of the utility model is:

[0006] A special tool for manual reversing of a spring-reset electromagnetic reversing valve comprises a nut, a tube body, a push rod, a guide block, a spring and a stopper, wherein the guide block, the spring and the stopper are respectively arranged in the tube body, the spring is located between the guide block and the stopper, the nut is threadedly connected to one end of the tube body, and the push rod passes through the stopper and the spring from the other end of the tube body and is connected to the guide block.

[0007] The guide block and the stop block are both cylindrical and matched with the pipe body, and the stop block is threadedly connected with the pipe body.

[0008] One end of the tube body is provided with an external thread matched with the nut, and the other end of the tube body is provided with an internal thread matched with the stopper.

[0009] A stop rod and a handle are fixed on the push rod, and a groove matching with the stop rod is arranged at the end of the tube body.

[0010] The shift lever and the push rod form a cross shape.

[0011] The groove on the end of the tube body that cooperates with the shift lever includes a shallow groove and a deep groove.

[0012] The outer surface of the nut is a stepped cylinder.

[0013] The beneficial effects of the present utility model are: it can realize the commutation of the spring return electromagnetic directional valve when it is not powered on, and can maintain the commutation position for a long time without affecting normal production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the shift lever of the present utility model in the shallow groove;

[0015] Figure 2 It is a cross-sectional view of the shift lever of the present utility model in the deep groove;

[0016] Figure 3 It is a schematic structural view of the shift lever of the present utility model in the shallow groove;

[0017] Figure 4 It is an exploded schematic view of the present utility model;

[0018] Figure 5 It is a schematic structural view of the stopper;

[0019] Figure 6 It is a schematic structural view of the guide block;

[0020] Figure 7 It is a schematic structural view of the tube body;

[0021] Figure 8 It is a schematic structural view of the push rod;

[0022] Figure 9 It is a schematic structural view of the nut;

[0023] Figure 10 It is a schematic structural view of a common spring return electromagnetic directional valve;

[0024] Figure 11 It is a schematic structural view of a common spring return electromagnetic directional valve after removing the fixing cap;

[0025] Figure 12 It is a schematic structural view of the shift lever of the present utility model screwed onto the electromagnetic directional valve in the shallow groove state;

[0026] Figure 13 It is a schematic structural view of the shift lever of the present utility model placed in the deep groove;

[0027] In the figure: 1, nut; 2, pipe body; 3, push rod; 4, guide block; 5, spring; 6, stop block; 7, valve body; 8, electromagnet; 9, fixing cap; 10, fault inspection button; 11, guide sleeve

[0028] 2a, shallow groove; 2b, deep groove; 3a, stop rod; 3b, handle; 4a, threaded through hole; 6a, regular hexagon through hole Specific embodiments

[0029] The following further illustrates the present utility model by examples in conjunction with the accompanying drawings

[0030] Refer to the attached Figures 1-13 A special tool for manual commutation of a spring return electromagnetic directional valve, comprising a nut 1, a pipe body 2, a push rod 3, a guide block 4, a spring 5 and a stop block 6. The guide block 4, the spring 5 and the stop block 6 are respectively arranged inside the pipe body 2. The spring 5 is located between the guide block 4 and the stop block 6. The nut 1 is threadedly connected to one end of the pipe body 2. The push rod 3 passes through the stop block 6 and the spring 5 from the other end of the pipe body 2 and is connected to the guide block 4

[0031] In this embodiment, refer to the attached Figures 1-4 The special tool for manual commutation of the spring return electromagnetic directional valve includes a pipe body 2, a push rod 3, a nut 1, a spring 5, a stop block 6 and a guide block 4. The stop block 6 is installed at the upper end of the pipe body 2. The push rod 3 passes through the center of the stop block 6 and is concentrically arranged with the pipe body 2. The guide block 4 is installed at the lower end of the push rod 3. The spring 5 is sleeved on the push rod 3 and is located between the stop block 6 and the guide block 4. The nut 1 is installed at the lower end of the pipe body 2

[0032] Refer to the attached Figure 7 The pipe body 2 is made of an iron pipe. Threads are processed on the inner side of the upper port and the outer side of the lower port of the pipe body 2. The upper port of the pipe body 2 is provided with a deep groove 2b and a shallow groove 2a. There are two groups of deep grooves 2b and two groups of shallow grooves 2a. The two groups of deep grooves 2b are on a straight line, the two groups of shallow grooves 2a are on a straight line, and the straight line where the two groups of deep grooves 2b are located intersects the straight line where the two groups of shallow grooves 2a are located at 90 degrees

[0033] Refer to the attached Figure 8 The upper end of the push rod 3 is provided with a stop rod 3a and a handle 3b. Threads are processed at the lower end of the push rod 3. The stop rod 3a and the handle 3b are both composed of iron rods, and the stop rod 3a and the handle 3b are on the same plane; refer to Figure 9 Threads are processed on the inner side of the upper port and the inner side of the lower port of the nut 1; refer to Figure 5 The stop block 6 is a cylinder. Threads are processed on the outer side of the stop block 6. A regular hexagon through hole 6a is provided in the center of the stop block 6; refer to Figure 6 The guide block 4 is a cylinder. The outer cylindrical surface of the guide block 4 is a smooth surface. A threaded through hole 4a is provided in the center of the guide block 4. The stop block 6 is threadedly connected to the pipe body 2

[0034] The upper end port of the nut 1 is threadedly connected to the lower end of the pipe body 2, and the inner cylindrical surface of the nut 1 is equal in size to the inner cylindrical surface at the lower end of the pipe body 2; the guide block 4 is threadedly connected to the push rod 3, and the guide block 4 can slide freely on the inner cylindrical surface at the lower end of the pipe body 2 and the inner cylindrical surface of the nut 1; the spring 5 can expand and contract freely within the inner cylindrical surface of the pipe body 2; the stop rod 3a is within the deep groove 2b or within the shallow groove 2a.

[0035] Assembly process of the utility model:

[0036] First, screw the stopper 6 onto the upper end of the pipe body 2 with a suitable hexagon socket tool; then, pass the push rod 3 downward through the center of the stopper 6, and place the stop rod 3a on the push rod 3 within the deep groove 2b of the pipe body 2; then, slip the spring 5 onto the push rod 3 from the lower end of the pipe body 2; next, screw the guide block 4 onto the lower end of the push rod 3, and finally, screw the nut 1 onto the lower end of the pipe body 2 to complete the assembly.

[0037] Working principle of the utility model:

[0038] Refer to the appendix Figures 10-13 , when the spring return type electromagnetic directional valve malfunctions and cannot operate normally for production, and the fault point has been excluded as being caused by the electromagnetic directional valve itself, at this time, we unscrew the fixing cap 9 on the electromagnetic directional valve from the guide sleeve 11, and screw the present utility model onto the guide sleeve 11 (before screwing the present utility model onto the guide sleeve 11, ensure that the stop rod 3a is within the shallow groove 2a), then we only need to pull the handle 3b to move the stop rod 3a from the shallow groove 2a to the deep groove 2b. At this time, the lower end of the push rod 3 just touches the fault inspection button 10 of the electromagnetic directional valve under the action of the spring force, achieving commutation. First, resume normal production, and then the electrical personnel check the electrical reasons. When there is a suitable time such as planned shutdown or roll change, then conduct a thorough restoration treatment on it.

Claims

1. A special tool for manual reversing of a spring-return electromagnetic reversing valve, characterized in that: The invention comprises a nut (1), a tube body (2), a push rod (3), a guide block (4), a spring (5) and a stop block (6); the guide block (4), the spring (5) and the stop block (6) are respectively arranged in the tube body (2); the spring (5) is located between the guide block (4) and the stop block (6); the nut (1) is threadedly connected to one end of the tube body (2); the push rod (3) passes through the stop block (6) and the spring (5) from the other end of the tube body (2) and is connected to the guide block (4).

2. A spring-return type electromagnetic reversing valve manual reversing special tool according to claim 1, characterized in that: The guide block (4) and the stop block (6) are both cylindrical and match the tube body (2), and the stop block (6) and the tube body (2) are threadedly connected together.

3. A spring-return type electromagnetic reversing valve manual reversing special tool according to claim 2, characterized in that: One end of the tube body (2) is provided with an external thread that matches the nut (1), and the other end of the tube body (2) is provided with an internal thread that matches the stopper (6).

4. A spring-return type electromagnetic reversing valve manual reversing special tool according to claim 1, characterized in that: A stop rod (3a) and a handle (3b) are fixed to the push rod (3), and a groove matching the stop rod (3a) is provided at the end of the tube body (2).

5. A spring-return type electromagnetic reversing valve manual reversing special tool according to claim 4, characterized in that: The blocking rod (3a) and the push rod (3) form a cross shape.

6. A spring-return type electromagnetic reversing valve manual reversing special tool according to claim 4, characterized in that: The groove at the end of the tube body (2) that matches the blocking rod (3a) comprises a shallow groove (2a) and a deep groove (2b).

7. A spring-return type electromagnetic reversing valve manual reversing special tool according to claim 1, characterized in that: The outer surface of the nut (1) is in the shape of a stepped cylinder.

Images