Sealing cover

Abstract

The utility model discloses a sealing cover which comprises an annular sealing groove, an annular sealing piece is contained in the annular sealing groove, and an air bag is arranged between the annular sealing piece and the bottom of the annular sealing groove. Wherein the annular sealing piece protrudes out of the groove top of the annular sealing groove when the annular sealing piece is not sealed, the annular sealing piece makes close contact with a sealed target device when the annular sealing piece is sealed, and the air bag is used for adjusting the combination tightness between the annular sealing piece and the sealed target device. By adopting the sealing cover provided by the utility model, the pressure between the annular sealing element and the sealing target device can be increased or reduced through the pressure intensity of the air bag, the sealing gap can be adjusted, the adjusting process is more flexible, and the stability of a product is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to supermicro grinder technical field, especially about a sealing cover. BACKGROUND

[0002] With the development of modern industry, the demand of material crushing is increasing, especially in the field of food, medicine, chemical industry, the supermicro grinding technology of material puts forward higher requirements.

[0003] In the use process of supermicro grinder, the sealing performance is crucial to the operation efficiency and product quality of the grinder. The sealing effect of traditional sealing device is poor, which leads to dust leakage during equipment operation, not only affects the product quality, but also may cause pollution to the environment.

[0004] How to improve the sealing performance of supermicro grinder is a technical problem to be solved. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a sealing cover to at least partially solve the above problems of prior art.

[0006] In order to achieve the above object, the utility model provides a sealing cover, which comprises: an annular sealing groove, an annular sealing member contained in the annular sealing groove, and a gas bag arranged between the annular sealing member and the bottom of the annular sealing groove.

[0007] Wherein, the annular sealing member protrudes from the top of the annular sealing groove when it is not sealed, and is in close contact with the sealing target device when it is sealed, and the gas bag is used to adjust the close degree between the annular sealing member and the sealing target device.

[0008] In one embodiment, two sealing rings are arranged on the outer wall of the annular sealing groove, and one sealing ring is arranged on the inner wall of the annular sealing groove.

[0009] In one embodiment, a gas blowing channel is arranged on the sealing member, the gas inlet of the gas blowing channel is communicated with the gas hole arranged on the wall of the annular sealing groove, and the gas outlet of the gas blowing channel is located on the contact surface between the sealing member and the sealing target device.

[0010] In one embodiment, the gas hole arranged on the side wall of the annular sealing groove is connected with a gas blowing device.

[0011] In one embodiment, the gas blowing channel comprises at least two gas outlets, and the gas outlet direction of at least one gas outlet of the at least two gas outlets is towards the outer ring direction of the annular sealing groove.

[0012] In one embodiment, the air blowing channel comprises a transverse section and an air outlet section, the transverse section is connected to the air inlet, and the air outlet section comprises at least a section inclined to the outer ring of the annular sealing groove.

[0013] In one embodiment, the sealing member contains an air blowing conduit, the air inlet end of the air blowing conduit is communicated with the outside through the air hole provided on the groove wall of the annular sealing groove, and the air outlet of the air blowing conduit is located on the contact surface of the sealing member and the sealed target device.

[0014] In one embodiment, the air bag comprises a gas charging and discharging port, and the gas charging and discharging port is communicated with the outside through the bottom or the side wall of the annular sealing groove.

[0015] In one embodiment, the contact surface of the annular sealing member and the sealed target device is high in the middle and low at both ends.

[0016] Compared with the prior art, the sealing cover has at least the following advantages:

[0017] By using the sealing cover provided by the present application, the pressure between the annular sealing member and the sealed target device can be increased or decreased by the air bag, the sealing gap can be adjusted, the adjustment process is more flexible, and the stability of the product is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The cross-sectional structure schematic diagram of the sealing cover provided by the present application is shown.

[0019] Figure 2 For Figure 1 The enlarged schematic diagram of the sealing groove and the sealing member. DETAILED DESCRIPTION

[0020] In order to enable the personnel in the technical field to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the field without creative labor should belong to the protection scope of the present application.

[0021] It should be noted that the terms "first", "second", and the like in the description and claims of the utility model and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances to understand the embodiments of the utility model described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, the product or equipment including a series of units does not have to be limited to those units clearly listed, but can include other units not clearly listed or inherent to these products or equipment.

[0022] In the utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0023] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For ordinary skilled persons in the art, the specific meaning of these terms in the utility model can be understood according to the specific circumstances.

[0024] In addition, the terms "mount", "set", "provided with", "connect", "connect", "sleeve" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0025] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] The utility model embodiment provides a sealing cover, Figure 1 A structural schematic diagram of a sealing cover is shown. Referring to Figure 1 As shown, the sealing cover 1 comprises: an annular sealing groove, an annular sealing member 3 contained in the annular sealing groove, and a gas bag 2 arranged between the annular sealing member 3 and the bottom of the sealing groove. Figure 2 As shown Figure 1An enlarged schematic view of the middle sealing groove and the sealing member.

[0027] The annular sealing member 3 protrudes from the top of the annular sealing groove when not in sealing, and is in close contact with the sealing target device when in sealing.

[0028] The air bag 2 can be an annular air bag, or can be multiple air bags connected or separated from each other.

[0029] The air bag 2 can include a gas charging and discharging port 9, which is connected to the outside through the bottom or sidewall of the annular sealing groove. The pressure of the air bag 2 can be increased or decreased through the gas charging and discharging port, so as to increase or decrease the pressure between the annular sealing member 3 and the sealing target device, adjust the sealing gap, and adjust the sealing gap after the sealing cover is installed, which is more flexible, and the stability of the product is ensured through the adjustment of the sealing gap. The sealing gap of the traditional end face sealing cannot be adjusted after installation, and if the gap is not reasonably set, the particle size of the product may not meet the standard during operation. Moreover, in the scheme of the utility model, the sealing gap can be adjusted through the inflation amount of the inflation part after the material of the head of the sealing device (i.e. the sealing member 3) is worn, so as to ensure the normal operation of the sealing device. The particle size of the product cannot be ensured after the sealing part of the traditional sealing structure is worn, and even leakage occurs, so that the machine has to be stopped for replacement.

[0030] The outer wall of the annular sealing groove can be provided with upper and lower sealing rings 6 and 7, and the inner wall of the annular sealing groove can be provided with a sealing ring 5. The sealing ring 5 can be at the same height as the upper sealing ring 6 on the outer wall. In addition, the inner wall of the annular sealing groove can also be provided with upper and lower sealing rings corresponding to the sealing rings 6 and 7. The outer wall of the annular sealing groove can also be provided with only one sealing ring. The specific number and position of the sealing rings can be flexibly adjusted according to actual application. The contact tightness between the sealing member 3 and the sealing groove is enhanced by setting the sealing rings.

[0031] The sealing member 3 is provided with a blowing channel 4, the air inlet of the blowing channel 4 is connected to the air hole 8 provided on the sidewall of the annular sealing groove, and the air outlet of the blowing channel is located on the contact surface of the sealing member and the sealing target device. The air hole 8 provided on the sidewall of the annular sealing groove can be connected to a blowing device. In other implementations, manual blowing can also be used. In one embodiment, the blowing channel 4 includes a transverse part and an air outlet part, the transverse part is connected to the air inlet, and the air outlet part at least includes a part inclined to the outer circle of the annular sealing groove.

[0032] The gas hole 8 can be located on the outer groove wall of the annular sealing groove or on the inner groove wall. Preferably, a sealing ring is arranged above and below the gas hole 8, so that the gas entering from the gas hole 8 can enter the sealing member 3.

[0033] In an embodiment, the gas blowing channel 4 on the sealing member 3 comprises at least two gas outlets, at least one of which is directed towards the outer ring of the annular sealing groove. In an example, as shown in Figure 2 the gas blowing channel 4 comprises two gas outlets, one of which is directed towards the outer ring of the annular sealing groove, and the other is directly directed towards the contact surface. In other embodiments, one of the gas outlets can be directed towards the outer ring of the annular sealing groove, and the other can be directed towards the inner ring of the annular sealing groove.

[0034] The gas hole 8 can be of a zigzag structure, i.e. opening from the side wall of the annular sealing groove, extending horizontally first, and then bending to protrude outside the sealing cover body, or of an oblique line structure, opening from the side wall of the annular sealing groove and directly extending to the outside of the sealing cover body.

[0035] In an embodiment, the sealing member 3 contains the gas blowing conduit 4, the gas inlet end of the gas blowing conduit 4 is communicated with the outside through the gas hole provided on the groove wall of the annular sealing groove, and the gas outlet of the gas blowing conduit is located on the contact surface between the sealing member 3 and the sealed target device. The sealing member 3 can contain a channel for accommodating the gas blowing conduit 4, the gas blowing conduit 4 can comprise a horizontal portion and a gas outlet portion, the horizontal portion is connected to the gas inlet, and the gas outlet portion comprises at least a portion inclined towards the outer ring of the annular sealing groove. The gas blowing conduit 4 can comprise at least two gas outlets, at least one of which is directed towards the outer ring of the annular sealing groove. In an example, as shown in Figure 2 the gas blowing conduit 4 comprises two gas outlets, one of which is directed towards the outer ring of the annular sealing groove, and the other is directly directed towards the contact surface. In other embodiments, one of the gas outlets can be directed towards the outer ring of the annular sealing groove, and the other can be directed towards the inner ring of the annular sealing groove.

[0036] In an embodiment, the contact surface between the annular sealing member and the sealed target device is higher in the middle and lower at both ends, which is more convenient for blowing.

[0037] In other embodiments, the gas outlet direction of the gas blowing channel 4 or the gas blowing conduit 4 can include four directions, so as to blow dust in any direction.

[0038] It should be noted that, Figure 1The air inlet 8 and the air charging and discharging port 9 are only examples, the sealing member 3 can only include one air inlet 8, and multiple air outlets can be arranged on the upper end surface of the sealing member 3 through pipelines, for example, air outlets are arranged on the upper end surface of the sealing member 3. The sealing member 3 can also include multiple air inlets 8, and multiple air outlets can also be arranged on the upper end surface of the sealing member 3. Only one air bag 2 can be accommodated in the sealing groove, and only one air charging and discharging port 9 can meet the air charging and discharging requirement. Multiple air bags 2 can be accommodated in the sealing groove, and each air bag needs one air charging and discharging port 9. Figure 1 The annular sealing members 3 shown on the left side and the right side can be symmetrical or different, and can be flexibly adjusted according to actual needs.

[0039] By arranging the blowing channels or blowing pipelines, the sealing device head is provided with protection gas blowing holes in different directions, powder in each direction is blown out, powder accumulation at the sealing joint is avoided, sealing wear is accelerated, and the effectiveness of the sealing is ensured. In addition, the material of the sealing head (the sealing member) is selected to be a material with poor wear resistance than the material of the sealing pair on the rotor side, the sealing pair of the rotor is protected, and the service life of the sealing is effectively improved.

[0040] Embodiment 2

[0041] The utility model embodiment provides a kind of sealing cover, such as Figure 1 And 2 As shown in the end cover 1 (sealing cover 1), a sealing groove for placing sealing member 3 is arranged, and the sealing member 3 can move freely up and down in the groove. Since the sealing member 3 is convenient to replace, a material with poor wear resistance than the material of the sealing pair on the rotor side can be used, and the rotor is effectively protected. The head of the sealing member 3 is provided with blowing holes in different directions to ensure that fine powder in each direction can be blown out. Three sealing rings are arranged on the sealing member 3, which are internal sealing ring 5, external upper sealing ring 6 and external lower sealing ring 7, i.e. sealing ring 5 on the inner ring groove wall of the annular sealing groove, upper sealing ring 6 and external lower sealing ring 7 on the outer ring groove wall. The functions of the internal sealing ring 5 and the external upper sealing ring 6 are to ensure that external fine powder does not enter the sealing groove when the sealing member 3 moves in the sealing groove of the sealing cover 1, and to ensure that the sealing member 3 can move normally. The functions of the external upper sealing ring 6 and the external lower sealing ring 7 are to ensure that all the gas entering the gas inlet 8 enters the sealing member 3 without leakage, and is blown out from the blowing hole of the sealing member 3. The air bag 2 is made of a high-molecular material that can change shape, and the displacement of the sealing member 3 can be accurately adjusted by controlling the internal air volume. The air charging port 9 provides sufficient air source for the air bag 2. The gas inlet 8 and the air charging port 9 are connected to the outside through the outer ring direction of the sealing groove.

[0042] By adopting the sealing cover, the pressure between the annular sealing member and the sealed target device can be increased or decreased by the air bag, the sealing gap is adjusted, and the adjustment can be performed after the sealing installation is completed, the adjustment process is more flexible, and the stability of the product is ensured. The sealing gap of the traditional end face sealing cannot be adjusted after installation, if the gap is not reasonably set, the product particle size may not meet the standard during operation. Moreover, in the scheme of the utility model, the sealing gap can still be adjusted by the inflation amount of the inflation part after the sealing member is worn, thereby ensuring the normal operation of the sealing device. The traditional sealing structure cannot guarantee the particle size of the product after the sealing part is worn, and even leakage occurs, thereby having to stop and replace. In the utility model, by setting the blowing channel or blowing pipe, the sealing device head is provided with protection gas blowing holes in different directions, the powder in each direction is blown out, powder accumulation at the sealing joint is avoided, sealing wear is accelerated, and the effectiveness of the sealing is ensured. Moreover, the sealing head (sealing member) material is selected to be worse than the rotor side sealing pair in wear resistance, the rotor sealing pair is protected, and the service life of the sealing is effectively improved.

[0043] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them. Those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A closure cap characterised in that, The application relates to a ring-shaped sealing groove, a ring-shaped sealing member in the ring-shaped sealing groove, and an air bag between the ring-shaped sealing member and the bottom of the ring-shaped sealing groove. When the ring-shaped sealing member is not sealed, the ring-shaped sealing member protrudes from the top of the ring-shaped sealing groove, and when the ring-shaped sealing member is sealed, the ring-shaped sealing member is in close contact with a sealing target device; the air bag is used to adjust the close contact between the ring-shaped sealing member and the sealing target device. Two sealing rings are arranged on the outer wall of the ring-shaped sealing groove, and one sealing ring is arranged on the inner wall of the ring-shaped sealing groove.

2. The closure of claim 1, wherein A blowing channel is arranged on the sealing member, the air inlet of the blowing channel is communicated with the air hole arranged on the wall of the ring-shaped sealing groove, and the air outlet of the blowing channel is located on the contact surface between the sealing member and the sealing target device.

3. A closure as claimed in claim 1 or 2, characterised in that The air hole arranged on the side wall of the ring-shaped sealing groove is connected with a blowing device.

4. The closure of claim 3, wherein The blowing channel comprises at least two air outlets, and the air outlet direction of at least one of the at least two air outlets is towards the outer ring direction of the ring-shaped sealing groove.

5. The closure of claim 3 wherein, The blowing channel comprises a transverse part and an air outlet part, the transverse part is connected with the air inlet, and the air outlet part at least comprises a part inclined to the outer ring direction of the ring-shaped sealing groove.

6. The closure of claim 3 wherein, The sealing member contains a blowing guide pipe, the air inlet end of the blowing guide pipe is communicated with the outside through the air hole arranged on the wall of the ring-shaped sealing groove, and the air outlet of the blowing guide pipe is located on the contact surface between the sealing member and the sealing target device.

7. The closure of claim 1 or 2, wherein The air bag comprises a gas charging and discharging port, and the gas charging and discharging port is communicated with the outside through the bottom or the side wall of the ring-shaped sealing groove.

8. The closure of claim 1, wherein The contact surface between the ring-shaped sealing member and the sealing target device is high in the middle and low at both ends.

9. The closure of claim 1, wherein ​

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