Universal tool for sealing explosion-proof enclosure

Abstract

The utility model discloses a universal tool for sealing an explosion-proof enclosure, which relates to the field of enclosure testing and comprises a tool body and the explosion-proof enclosure, the upper end face of the explosion-proof enclosure is pressed by an upper pressing plate, the lower end face of the explosion-proof enclosure is pressed by a lower pressing plate, water is introduced into the explosion-proof enclosure through a water inlet formed in the upper pressing plate, and meanwhile, the explosion-proof enclosure is sealed through the lower pressing plate. Water is discharged outwards through a water outlet formed in the lower pressing plate; the tool body is provided with a plurality of groups of screw holes, each group of screw holes comprises four screw holes which are used for installing sealing bolts so as to correspondingly fix four corners of a wire outlet of the explosion-proof casing of one specification, and a layer of rubber pad is arranged between the tool body and the wire outlet and is locked by fixing bolts. The motor shell sealing device can adapt to different motor shells for shell sealing and is high in universality.

Description

Technical Field

[0001] The utility model relates to the field of casing testing, in particular to a tooling for a universal sealed explosion-proof casing. Background Art

[0002] Explosion-proof motors are motors that can be used in flammable and explosive places. They do not generate sparks during operation and have high reliability. Explosion-proof motors are mainly used in coal mines, oil and gas, petrochemical and chemical industries. In addition, they are also widely used in textiles, metallurgy, city gas, transportation, grain and oil processing, papermaking, medicine and other fields. As the main power equipment, explosion-proof motors are usually used to drive pumps, fans, compressors and other transmission machinery.

[0003] Conventional standard motor casings do not need to be tested for water pressure, so no tooling is needed for sealing. However, in explosion-proof motors, according to national standards, explosion-proof casings need to be tested for water pressure to ensure that the casing can withstand a certain internal explosion pressure. Since the casing has upper and lower end openings and outlets, they need to be sealed to measure water pressure, and casings of different specifications have different outlets, so it is necessary to develop a universal tooling that can seal different outlets. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a universal sealed explosion-proof casing tooling, which can seal the outlets of different explosion-proof casings.

[0005] The purpose of the utility model is achieved through the following technical solutions: this universal sealed explosion-proof casing tooling includes a tooling body and an explosion-proof casing, the upper end surface of the explosion-proof casing is pressed by an upper pressure plate, and the lower end surface of the explosion-proof casing is pressed by a lower pressure plate, water is passed into the explosion-proof casing through a water inlet opened on the upper pressure plate, and at the same time, water is discharged outward through a water outlet opened on the lower pressure plate; a plurality of groups of screw holes are opened on the tooling body, each group of screw holes includes four, which are used to install sealing bolts, so as to fix the four corners of the outlet of an explosion-proof casing of a certain specification, and a layer of rubber pad is arranged between the tooling body and the outlet, and is locked with fixing bolts.

[0006] As a further technical solution, through holes are provided on the rubber pad at positions corresponding to the screw holes for the fixing bolts to pass through.

[0007] As a further technical solution, on the tool body, plugs are installed at the empty screw holes within the range of the outlet to block the seal, and rubber discs are installed at the empty through holes to block the seal.

[0008] As a further technical solution, the sizes of the groups of screw holes are different, so as to adapt to explosion-proof casings of different sizes.

[0009] As a further technical solution, fixing holes are correspondingly provided on the tool body and the rubber pad for installing fixing bolts.

[0010] As a further technical solution, both end surfaces of the tooling body are fine-turned to a surface roughness of Ra6.3.

[0011] The beneficial effects of the utility model are:

[0012] 1. The threaded holes of the outlet are used to fix the casing and the tooling with bolts. When the casing model changes, the position of the threaded holes of the outlet also changes. For explosion-proof motors of different specifications, multiple groups of screw holes of different sizes are set on the tooling body, which can be sealed with the same tooling, which not only reduces the number of tooling, but also saves the tooling production cost;

[0013] 2. A rubber pad is set between the tool body and the outlet to seal and improve the sealing performance;

[0014] 3. The surfaces of both ends of the tooling pump body are fine-machined to a roughness of Ra6.3 to ensure good sealing after assembly with the plug;

[0015] 4. When replacing the explosion-proof casing for testing, you only need to replace the plug and bolts, which saves time and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model after assembly.

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram of area A in the middle.

[0018] Figure 3 It is a structural schematic diagram of the tooling body in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the rubber pad in the utility model.

[0020] Explanation of the reference numerals: tool body 1, sealing bolt 2, plug 3, wire outlet 4, rubber pad 5, fixing bolt 6, water inlet 7, upper pressure plate 8, explosion-proof casing 9, lower pressure plate 10, water outlet 11, screw hole 12, fixing hole 13, through hole 14. DETAILED DESCRIPTION

[0021] The utility model will be described in detail below with reference to the accompanying drawings:

[0022] Example: As shown in the attached Figures 1 to 4As shown, this universal sealed explosion-proof casing tooling includes a tooling body 1, a sealing bolt 2, a plug 3, a wire outlet 4, a rubber pad 5, a fixing bolt 6, a water inlet 7, an upper pressure plate 8, an explosion-proof casing 9, a lower pressure plate 10, a water outlet 11, a screw hole 12, a fixing hole 13, and a through hole 14.

[0023] Reference Figure 1 , the upper end surface of the explosion-proof housing 9 is pressed by the upper pressing plate 8, and the lower end surface of the explosion-proof housing 9 is pressed by the lower pressing plate 10. It is necessary to ensure that the size of the upper pressing plate 8 and the lower pressing plate 10 is larger than the upper and lower end surfaces of the explosion-proof housing 9 to ensure that there is no water leakage. During the test, water is passed into the explosion-proof housing 9 through the water inlet 7 opened on the upper pressing plate 8, and at the same time, the water is discharged outward through the water outlet 11 opened on the lower pressing plate 10.

[0024] Further, such as Figure 3 , 4 As shown, four groups of screw holes 12 (four groups in this embodiment, or other numbers) are provided on the tool body 1, each group of screw holes 12 includes four, and each screw hole 12 is installed with a sealing bolt 2, so as to correspond to the four corners on the outlet 4 of the explosion-proof housing 9 (determine the specifications, and when adjusting the specifications, adjust the screw hole 12 group accordingly), and the size and position of the four threaded holes of the outlet 4 on the explosion-proof housing 9 correspond. A layer of rubber pad 5 is provided between the tool body 1 and the outlet 4, and through holes 14 are provided on the rubber pad 5 at positions corresponding to the screw holes 12, through which the fixing bolts 6 can pass, so that the tool body 1 and the rubber pad 5 are locked.

[0025] like Figure 1 As shown, on the tool body 1, plugs 3 are installed at the vacant screw holes 12 within the range of the outlet 4 to block the seal, and rubber discs are installed at the vacant through holes 14 to block the seal, which does not affect the use of the tool and enhances the sealing performance.

[0026] Preferably, the sizes of the screw holes 12 in each group are different, and the positions are staggered, so as to adapt to explosion-proof housings 9 of different sizes, and the four screw holes 12 in each group of screw holes 12 are guaranteed to be consistent in size. Figure 2 As shown, the tool body 1 and the rubber pad 5 are provided with corresponding fixing holes 13, which can be used to install the fixing bolts 6. After the tool body 1 and the rubber pad 5 are locked, the sealing is better to prevent them from falling off the outlet 4. The two end surfaces of the tool body 1 are fine-turned to have a surface roughness of Ra6.3, which can ensure that the plug 3 and the tool body 1 are more closely matched, and the matching clearance between the rubber pad 5 and the tool body 1 is smaller.

[0027] The working process of this utility model:

[0028] During the test, the explosion-proof housing 9 is placed horizontally, with the outlet 4 facing upwards to facilitate the installation of the tooling body 1. The model of the explosion-proof housing 9 is determined, the corresponding sealing bolts 2 and plugs 3 are selected, the rubber pad 5 and the tooling body 1 are fixed together with the fixing bolts 6, and then the tooling body 1 and the outlet 4 of the explosion-proof housing 9 are fixed with a set of sealing bolts 2. After the fixation is completed, the screw holes 12 that affect the water pressure test (i.e., the free screw holes 12 within the range of the outlet 4) are blocked with plugs 3, the upper and lower ends of the explosion-proof housing 9 are covered with sealing plates (upper pressure plate 8 and lower pressure plate 10), and then the upper and lower ends are pressed with a hydraulic press, the water inlet 7 is opened to start filling the explosion-proof housing 9 with water, and the water outlet 11 is closed. When a certain pressure is reached, the pressure is maintained for 1 minute to observe whether the explosion-proof housing 9 leaks.

[0029] When replacing the explosion-proof housing 9, remove the sealing bolts 2 and the plugs 3, replace a corresponding set of screw holes 12, and then perform the test in the above manner.

[0030] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. A universal sealed explosion-proof housing tooling, characterized in that: The utility model comprises a tool body (1) and an explosion-proof casing (9), wherein the upper end surface of the explosion-proof casing (9) is pressed by an upper pressure plate (8), and the lower end surface of the explosion-proof casing (9) is pressed by a lower pressure plate (10); water is passed into the explosion-proof casing (9) through a water inlet (7) provided on the upper pressure plate (8), and water is discharged to the outside through a water outlet (11) provided on the lower pressure plate (10); a plurality of groups of screw holes (12) are provided on the tool body (1), and each group of screw holes (12) includes four screw holes for installing sealing bolts (2), so as to fix the four corners of the outlet (4) of an explosion-proof casing (9) of a certain specification; a layer of rubber pad (5) is provided between the tool body (1) and the outlet (4), and is locked with fixing bolts (6).

2. The universal sealed explosion-proof housing tooling according to claim 1 is characterized in that: Through holes (14) are provided on the rubber pad (5) at positions corresponding to the screw holes (12) for the fixing bolts (6) to pass through.

3. The tooling for the universal sealed explosion-proof housing according to claim 2 is characterized in that: On the tool body (1), a plug (3) is installed at the vacant screw hole (12) within the range of the corresponding outlet (4) to block the seal, and a rubber disc is installed at the vacant through hole (14) to block the seal.

4. The universal sealed explosion-proof housing tooling according to claim 1 is characterized in that: The sizes of the groups of screw holes (12) are different and are used to adapt to explosion-proof casings (9) of different sizes.

5. The universal sealed explosion-proof housing tooling according to claim 1 is characterized in that: The tool body (1) and the rubber pad (5) are provided with corresponding fixing holes (13) for installing fixing bolts (6).

6. The universal sealed explosion-proof housing tooling according to claim 1 is characterized in that: The two end surfaces of the tool body (1) are fine-turned to a surface roughness of Ra6.3.

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