CN215121382U

CN215121382U - Main box body shell with air leakage prevention function

Info

Publication number: CN215121382U
Application number: CN202023337054.7U
Authority: CN
Inventors: 平家杰; 董方斌; 顾鹏飞
Original assignee: Zhejiang Haolong Electrical Co ltd
Current assignee: Zhejiang Haolong Electrical Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-12-10
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a main box body shell with air leakage prevention, which comprises an upper shell and a lower shell, wherein the lower shell is provided with a sealing boss, and a groove is arranged at the contact position of the sealing boss and the inner wall of the lower shell; the sealing boss can be separated from the side wall by arranging the groove, so that the cutter can be completely processed at one time without generating processing cutter receiving marks, and the product is prevented from leaking.

Description

Main box body shell with air leakage prevention function

Technical Field

The utility model belongs to the technical field of the main tank body structure, especially, relate to a main tank body casing with leak protection gas.

Background

In the joint of a sealing surface and a side wall of a general main box body, when a product is processed, a large-diameter face milling cutter cannot enter a processed face due to the influence of the rib position of the side wall, and in order to completely process the sealing surface, a small-diameter cutter is required to process the rest position, so that the two cutters inevitably have repeated processing areas during processing, and the occurrence of tool catching marks is caused. Meanwhile, the counter-hand piece for sealing is a rigid sealing gasket, and the deformation of the counter-hand piece is different from that of the rubber ring type sealing gasket, so that the deformation of the rigid sealing gasket is smaller, and the requirement on product sealing is higher. Therefore, the cutting trace generated by the machining of the cutter is very easy to influence the sealing of the air channel, and the final result of slight error is that the sealing surface of the product leaks air to influence the assembly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide a main tank casing with leak protection gas.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a main box body shell with air leakage prevention function comprises an upper shell and a lower shell, wherein the lower shell is provided with a sealing boss, and a groove is formed in the contact position of the sealing boss and the inner wall of the lower shell; the sealing boss can be separated from the side wall by arranging the groove, so that the cutter can be completely processed at one time without generating processing cutter receiving marks, and the product is prevented from leaking.

Preferably, the height difference between the top surface of the sealing boss and the bottom surface of the groove is 0.5 mm.

Preferably, a notch is formed in the side wall of the lower shell, a circle of convex edge protruding out of the side wall of the shell is arranged on the periphery of the connecting notch, and four connecting holes are formed in the position, corresponding to the inner position of the circle of convex edge, of the shell.

Preferably, the lower shell is provided with an air tightness detection part which comprises an assembly groove arranged on the lower shell, an inflation cavity matched with the assembly groove, a first air passage and a second air passage communicated with the inflation cavity, an air leakage prevention space positioned between the first air passage and the second air passage, a first detection part arranged at the end part of the first air passage and a second detection part arranged at the end part of the second air passage; the cross sections of the first air passage and the second air passage are both circular structures, and the diameters of the first air passage and the second air passage are 4-4.5 mm; the width of the air leakage preventing space is 12-12.5 mm; the structure of the two air channel holes is changed, and the distance between the two air channel holes is increased, so that the mold processing can be adopted during processing, and compared with the traditional processing mode, the loosening position of the inner wall of the air channel is not easy to occur; secondly, because the interval increase between two air flues to even under the condition that the air flue inner wall has loose position, the phenomenon of gas mixing each other can not appear between two air flues yet, thereby the gas leakage condition and the position of the quick judgement main tank body, thereby improve the qualification rate of main tank body installation greatly.

Preferably, the first detection piece and the second detection piece are steel balls, and the end parts of the first air passage and the second air passage are respectively provided with an anti-abrasion piece; the anti-abrasion part can be detached relative to the air passage, and then can be independently maintained and replaced as an easily-damaged part, so that the air passage is prevented from being directly abraded, and the service life of the shell is prolonged.

Preferably, the first air passage comprises a notch groove formed by inwards sinking the lower part of the side surface of the lower shell and a strip-shaped through groove, one end of the strip-shaped through groove is connected with the inflation cavity, and the other end of the strip-shaped through groove is connected with the notch groove; the inner diameter of the strip-shaped through groove is smaller than that of the notch groove, the anti-abrasion piece is a metal ring embedded in the notch groove, and the inner wall of the metal ring is a smooth surface; under the structure, a step is formed at the joint of the strip-shaped channel and the notch groove to limit the anti-abrasion piece, so that the anti-abrasion piece cannot move into the air passage under the driving of the ball even if the surface of the steel ball is completely tightly matched with the anti-abrasion piece when the steel ball is plugged into the air passage, the anti-abrasion piece is always positioned at the end part of the air passage, the ball can be matched with the anti-abrasion piece more tightly, and the air tightness detection effect is good; the smooth surface further reduces the abrasion between the abrasion-proof piece and the steel ball, and prolongs the service life of the steel ball and the abrasion-proof piece.

In conclusion, the sealing boss and the side wall can be separated by the groove, so that the cutter can be completely machined at one time without generating machining cutter connecting marks, and the product is prevented from leaking.

Drawings

Fig. 1 is a schematic structural diagram of the lower housing of the present invention.

Fig. 2 is an enlarged view of fig. 1 at a.

Fig. 3 is a cross-sectional view of fig. 1.

Fig. 4 is an enlarged view of fig. 3 at a.

Detailed Description

As shown in fig. 1-4, a main box body shell with air leakage prevention comprises an upper shell, a lower shell 1, an assembly groove 2, two inflation cavities 3, a sealing boss 6 and an air tightness detection component, wherein the upper shell is not shown in the figure, the upper shell is made of the same material as the lower shell and is connected with the lower shell through screws; the sealing boss 6 is arranged in the lower shell, a groove 61 is formed in the contact position of the sealing boss and the inner wall of the lower shell, and the height difference between the top surface of the sealing boss and the bottom surface of the groove is 0.5 mm; the assembly groove 2 is arranged on the lower shell, and the main box body can be arranged on the assembly groove 2 through screws; the two inflation cavities 3 are symmetrically arranged, and the two inflation cavities 3 are both arranged on the lower shell and are communicated with the assembling groove; the air tightness detection component is arranged on the lower shell and specifically comprises a first air passage 41 and a second air passage 42 which are respectively communicated with the two inflation cavities, an air leakage prevention space 43 positioned between the first air passage and the second air passage, a first detection piece 44 arranged at the end part of the first air passage and a second detection piece 45 arranged at the end part of the second air passage; the cross sections of the first air passage and the second air passage are both circular structures, and the diameters of the first air passage and the second air passage are 4-4.5 mm; the width of the air leakage preventing space 43 is 12-12.5 mm.

Preferably, the diameters of the first and second air passages are 4.2mm, and the width of the air leakage preventing space 43 is 12.2 mm.

Further, the first detecting part 44 and the second detecting part 45 are steel balls, and the end parts of the first air passage and the second air passage are respectively provided with an anti-abrasion part 5; the first air duct 41 comprises a notch slot 411 formed by the lower part of the side surface of the lower shell sinking inwards and a strip-shaped through slot 412 with one end connected with the inflation cavity and the other end connected with the notch slot; the inner diameter of the strip-shaped through groove 412 is smaller than that of the notch groove 411, the anti-abrasion piece 5 is a metal ring embedded in the notch groove, and the inner wall of the metal ring is a smooth surface, wherein the smooth surface refers to a relatively smooth and flat inner wall which can be processed by the existing process, and does not refer to an inner wall which does not have friction completely; the structure of the second air passage is the same as that of the first air passage, and is not described in detail herein.

A connecting port 11 is arranged on one side wall of the lower shell 1, and a connecting notch 12 is arranged on the other side wall; preferably, a circle of convex ribs 13 protruding from the side wall of the shell is arranged on the periphery of the connecting gap, the convex ribs and the shell are integrally formed, and four connecting holes 14, specifically screw holes, are arranged on the shell at positions corresponding to the inner parts of the circle of convex ribs.

Claims

1. The utility model provides a main tank casing with leak protection gas, includes casing (1) and casing down, its characterized in that: the lower shell is provided with a sealing boss (6), and a groove (61) is formed in the contact position of the sealing boss and the inner wall of the lower shell; the height difference between the top surface of the sealing boss and the bottom surface of the groove is 0.5 mm.

2. The main box body casing with air leakage prevention according to claim 1, wherein: the side wall of the lower shell is provided with a notch (12), the periphery of the connecting notch is provided with a circle of convex edges (13) protruding out of the side wall of the shell, and the shell is provided with four connecting holes (14) corresponding to the positions in the circle of convex edges.

3. The main box body casing with air leakage prevention according to claim 1, wherein: the lower shell is provided with an air tightness detection part which comprises an assembly groove arranged on the lower shell, an inflation cavity matched with the assembly groove, a first air passage (41) and a second air passage (42) communicated with the inflation cavity, an air leakage prevention space (43) positioned between the first air passage and the second air passage, a first detection part (44) arranged on the end part of the first air passage and a second detection part (45) arranged on the end part of the second air passage; the cross sections of the first air passage and the second air passage are both circular structures, and the diameters of the first air passage and the second air passage are 4-4.5 mm; the width of the air leakage preventing space (43) is 12-12.5 mm.

4. A main casing body with air leakage prevention according to claim 3, wherein: the first detection piece (44) and the second detection piece (45) are steel balls, and the end parts of the first air passage and the second air passage are respectively provided with an anti-abrasion piece (5).

5. The main box body casing with air leakage prevention according to claim 4, wherein: the first air channel (41) comprises a notch groove (411) formed by inwards sinking the lower part of the side surface of the lower shell and a strip-shaped through groove (412) with one end connected with the inflation cavity and the other end connected with the notch groove; the internal diameter that the bar led to the groove (412) is less than the internal diameter of breach groove (411), wearing proof spare (5) are for inlaying the becket in this breach groove, and this becket inner wall sets up to smooth surface.