Liquid drainage device and mining equipment

Abstract

The utility model provides a liquid drainage device and mining equipment, and relates to the technical field of liquid drainage of the mining equipment. The liquid discharging device comprises a seat body, an anti-explosion column body and a liquid discharging screw. A through hole, a containing cavity and an assembling groove which are sequentially communicated are formed in the base body in the axial direction; the diameter of the through hole is smaller than that of the containing cavity, and the diameter of the containing cavity is smaller than that of the assembling groove. The anti-explosion column body is arranged in the containing cavity, and a gap is formed between the periphery of the anti-explosion column body and the inner wall of the containing cavity. The liquid discharging screw is assembled in the assembling groove; a liquid discharge groove is formed in the liquid discharge screw and is communicated with the accommodating cavity. The mining equipment provided by the utility model adopts the drainage device. According to the drainage device and the mining equipment, the technical problems that in the prior art, the gap flow of a drainage device is too small, and the drainage effect is poor can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid drainage of mining devices, and more specifically, to a liquid drainage device and mining equipment. Background Art

[0002] Explosion-proof products, that is, explosion-proof electrical appliances, as the name implies, are electrical appliances that can prevent explosion accidents in places containing explosive hazardous gas mixtures. Explosion-proof electrical appliances in China are basically divided into two categories: one is called mining explosion-proof electrical appliances, which are mainly used in coal mines and mines with explosive gases such as gas, and the other is called factory explosion-proof electrical appliances, which are mainly used in all places except mines and coal mines.

[0003] Mining explosion-proof products are applied underground in coal mines. The underground environment is changeable, the air humidity is relatively high, and in mining explosion-proof products, the cooling system of power devices has a relatively low temperature, forming a temperature difference with the surrounding environment. When the equipment is running or under maintenance, it is extremely easy to form condensed water, which cannot be discharged. The accumulated condensed water in the equipment will cause great damage to the equipment and the components inside the equipment.

[0004] In some existing technologies, although liquid drainage devices that can solve the above problems are provided, the gap flow rate of most liquid drainage devices is too small, and the drainage effect is not good. Summary of the Utility Model

[0005] The technical problem solved by the utility model is how to improve the technical problem that the gap flow rate of the liquid drainage device in the existing technology is too small and the drainage effect is poor.

[0006] The embodiments of the utility model can be implemented as follows:

[0007] The utility model provides a liquid drainage device, including:

[0008] A seat body, which is axially provided with a through hole, a receiving cavity, and an assembly groove that are sequentially communicated; the aperture of the through hole is smaller than the diameter of the receiving cavity, and the diameter of the receiving cavity is smaller than the aperture of the assembly groove;

[0009] An explosion-proof column body, placed inside the receiving cavity, and a gap is formed between the outer periphery of the explosion-proof column body and the inner wall of the receiving cavity;

[0010] A liquid drainage screw, assembled in the assembly groove; a liquid drainage groove is provided on the liquid drainage screw, and the liquid drainage groove communicates with the receiving cavity.

[0011] The beneficial effects of the liquid drainage device provided by the utility model compared with the existing technology include:

[0012] In this liquid drainage device, when the liquid drainage device is applied to mining equipment, the liquid to be drained in the mining equipment can enter the accommodation cavity through the through hole, and the liquid entering the accommodation cavity can flow to the assembly groove through the gap between the explosion-proof column and the inside of the accommodation cavity, so as to be discharged through the liquid drainage groove on the liquid drainage screw. Among them, since the explosion-proof column is arranged in the accommodation cavity, the explosion-proof column is eccentrically arranged relative to the central axis of the accommodation cavity, so that the gap between one side of the explosion-proof column and the inner wall of the accommodation cavity is larger. Based on parameters such as the eccentricity of the explosion-proof column and the width of the gap, it can be concluded that the setting method of this liquid drainage device can increase the liquid drainage flow rate, thereby improving the liquid drainage effect. Based on this, the liquid drainage device provided by the present utility model can solve the technical problems of the small gap flow rate and poor drainage effect of the liquid drainage device in the prior art.

[0013] Optionally, the accommodation cavity is cylindrical, and the explosion-proof column is cylindrical.

[0014] Optionally, the axial length of the explosion-proof column is less than the axial length of the accommodation cavity.

[0015] Optionally, the difference between the diameter of the explosion-proof column and the diameter of the accommodation cavity ranges from 0.2 mm to 0.4 mm.

[0016] Optionally, the liquid drainage screw is spaced from the bottom wall of the assembly groove, and the explosion-proof column is spaced from the liquid drainage screw.

[0017] Optionally, the liquid drainage groove is opened on the outer circumference of the liquid drainage screw.

[0018] Optionally, there are a plurality of liquid drainage grooves, and the plurality of liquid drainage grooves are spaced apart and distributed on the outer circumference of the liquid drainage screw.

[0019] Optionally, the liquid drainage device further includes a protective cover, the protective cover is connected to the liquid drainage screw, and covers the part of the liquid drainage screw exposed from the assembly groove.

[0020] A mining equipment includes the above-mentioned liquid drainage device.

[0021] The mining equipment provided by the present utility model adopts the above-mentioned liquid drainage device. The beneficial effects of this mining equipment relative to the prior art are the same as those of the above-mentioned liquid drainage device relative to the prior art, and will not be elaborated here. Description of the Drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0023] Figure 1 Structural schematic diagram of the liquid discharge device provided in the embodiments of the present application;

[0024] Figure 2 One of the cross-sectional structural schematic diagrams of the liquid discharge device provided in the embodiments of the present application;

[0025] Figure 3 Cross-sectional view of the liquid discharge device in the prior art;

[0026] Figure 4 Another cross-sectional structural schematic diagram of the liquid discharge device provided in the embodiments of the present application;

[0027] Figure 5 Structural schematic diagram of the liquid discharge screw provided in the embodiments of the present application.

[0028] Icons: Liquid discharge device 10, seat body 100, through hole 110, accommodating cavity 120, assembly groove 130, explosion-proof column 200, liquid discharge screw 300, liquid discharge groove 310, shield 400. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is habitually placed during use. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0033] In addition, if terms such as "first", "second", etc. are only used for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0034] It should be noted that, without conflict, the features in the embodiments of the present utility model can be combined with each other.

[0035] Please refer to Figure 1 , in the embodiment of the present application, a liquid drainage device 10 is provided. The liquid drainage device 10 can be applied to mining equipment to facilitate the mining equipment to drain the internal water that needs to be drained, so as to ensure the normal operation of the mining equipment. It should be noted that the liquid drainage device 10 provided in this embodiment can improve the technical problem that the slit flow rate of the liquid drainage device in the prior art is too small and the drainage effect is not good. Based on this, the mining equipment adopting the liquid drainage device 10 can also improve the technical problem that the slit flow rate of the liquid drainage device in the prior art is too small and the drainage effect is not good.

[0036] Please refer to in combination Figure 1 and Figure 2 , in this embodiment, the liquid drainage device 10 includes a seat body 100, an explosion-proof column body 200 and a liquid drainage screw 300. The seat body 100 is axially provided with a through hole 110, a receiving cavity 120 and an assembly groove 130 that are sequentially communicated; the aperture of the through hole 110 is smaller than the diameter of the receiving cavity 120, and the diameter of the receiving cavity 120 is smaller than the aperture of the assembly groove 130. Optionally, the seat body 100 is generally made of a metal material. For example, the seat body 100 is a copper sleeve. The explosion-proof column body 200 is placed inside the receiving cavity 120, and a slit is formed between the outer periphery of the explosion-proof column body 200 and the inner wall of the receiving cavity 120. The liquid drainage screw 300 is assembled in the assembly groove 130; a liquid drainage groove 310 is provided on the liquid drainage screw 300, and the liquid drainage groove 310 communicates with the receiving cavity 120.

[0037] It should be noted that the explosion-proof cylinder 200 is placed inside the receiving cavity 120, which means that the volume of the explosion-proof cylinder 200 is smaller than that of the receiving cavity 120, so that the explosion-proof cylinder 200 can move freely inside the receiving cavity 120. Based on this, when the explosion-proof cylinder 200 is placed inside the receiving cavity 120, one side wall of the explosion-proof cylinder 200 contacts one side wall of the receiving cavity 120, while the opposite side wall is spaced from the inner wall of the receiving cavity 120. It can also be considered that the explosion-proof cylinder 200 is eccentrically arranged inside the receiving cavity 120.

[0038] As described above, in the drainage device 10, when the drainage device 10 is applied to mining equipment, the liquid to be drained in the mining equipment can enter the receiving cavity 120 through the through hole 110. The liquid entering the receiving cavity 120 can flow through the gap between the explosion-proof cylinder 200 and the inside of the receiving cavity 120 to the assembly groove 130, and is discharged through the drainage groove 310 on the drainage screw 300. Among them, since the explosion-proof cylinder 200 is arranged by being placed in the receiving cavity 120, the explosion-proof cylinder 200 is eccentrically arranged relative to the central axis of the receiving cavity 120, which makes the gap between one side of the explosion-proof cylinder 200 and the inner wall of the receiving cavity 120 larger. Based on parameters such as the eccentricity of the explosion-proof cylinder 200 and the width of the gap, it can be obtained that the drainage flow rate can be improved by adopting the setting method of the drainage device 10, thereby improving the drainage effect. Based on this, the drainage device 10 provided in this embodiment can solve the technical problems of too small gap flow rate and poor drainage effect in the existing drainage device.

[0039] Among them, please refer to Figure 3 , Figure 3 is a cross-sectional view of a drainage device in the prior art. Among them, h refers to the width of the gap for drainage; d refers to the inner diameter of the annular gap. Based on h and d, and the following formula, the drainage flow rate of the drainage device in the prior art can be calculated. The formula is as follows:

[0040] ,

[0041] ,

[0042] Among them, in the above formula, represents the pressure drop of the gap between the explosion-proof cylinder 200 and the drainage screw; Q represents the flow rate of the gap between the inner wall of the receiving cavity 120 and the explosion-proof cylinder 200; μ represents the kinematic viscosity of the cooling water in the gap; l represents the length of the gap between the explosion-proof cylinder 200 and the inner wall of the receiving cavity 120.

[0043] In contrast, the screenshot of the drainage device 10 provided in this embodiment is as Figure 4, where the outer large circle represents the inner wall of the accommodation cavity 120, and the inner small circle represents the outer peripheral wall of the explosion-proof column 200; the crescent-shaped gap formed therebetween represents the gap for liquid to flow out between the explosion-proof column 200 and the inner wall of the accommodation cavity 120. In the figure, φ can represent any angle, the flow rate of the gap is y, the eccentricity is e, and the average gap is h; where,

[0044] ,

[0045] ,

[0046] where, r2 represents the radius of the accommodation cavity 120; r1 represents the radius of the explosion-proof column 200.

[0047] Through calculation and derivation, the eccentricity is calculated as follows:

[0048] ,

[0049] Based on this, it can be obtained that:

[0050] ,

[0051] ,

[0052] By setting the width b = ds, and calculating the flow rate of the gap with height h = y according to the flow working hours of parallel planes, it can be obtained that:

[0053] ,

[0054] Integrating the above formula from 0 to 2π, it can be obtained that:

[0055] ,

[0056] After simplification, it can be obtained that:

[0057] ,

[0058] It can be seen that by eccentrically setting the explosion-proof column 200, compared with the concentric setting method in the prior art, the flow rate can be increased by 2.5 times. Thus, it indicates that the liquid discharge device 10 provided in this embodiment can solve the technical problems of too small gap flow rate and poor drainage effect of the liquid discharge device in the prior art. Among them, the above derivation process is the prior art.

[0059] In addition, it is worth noting that the explosion-proof column 200 can not only increase the flow rate of the liquid discharge device 10 by eccentrically setting, but at the same time, the explosion-proof column 200 can also serve as an explosion-proof device to provide an explosion-proof function.

[0060] Further, in this embodiment, the accommodation cavity 120 is cylindrical, and the explosion-proof column 200 is cylindrical. Based on this, when the explosion-proof column 200 is placed inside the accommodation cavity 120, the explosion-proof column 200 is eccentrically placed on one side of the accommodation cavity 120, thereby forming a crescent-shaped gap. It should be noted that when the liquid discharge device 10 is installed in the mining equipment, the axis of the accommodation cavity 120 is generally arranged horizontally, which also makes the explosion-proof column 200 contact one side in the radial direction of the accommodation cavity 120, thereby forming a crescent-shaped gap.

[0061] Optionally, please continue to refer to Figure 2 , in this embodiment, the axial length of the explosion-proof column 200 is less than the axial length of the accommodation cavity 120. Thus, combined with the diameter of the explosion-proof column 200 being smaller than the diameter of the accommodation cavity 120, the explosion-proof column 200 can move in the accommodation cavity 120. Through the movement of the explosion-proof column 200, it is beneficial to drive the water flow in the gap to be discharged, further improving the liquid discharge effect.

[0062] In this embodiment, the difference between the diameter of the explosion-proof column 200 and the diameter of the accommodation cavity 120 ranges from 0.2 mm to 0.4 mm. By adopting the above value range, not only can the liquid discharge flow rate and the liquid discharge effect be improved, but on the other hand, it can also facilitate the standardization of the explosion-proof column 200 and the liquid discharge device 10, and it is also convenient for the assembly of the explosion-proof column 200 in the accommodation cavity 120. Of course, the difference between the diameter of the explosion-proof column 200 and the diameter of the accommodation cavity 120 can be 0.2 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, 0.3 mm, 0.31 mm, 0.32 mm, 0.33 mm, 0.34 mm, 0.35 mm, 0.36 mm, 0.37 mm, 0.38 mm, 0.39 mm or 0.4 mm, etc.

[0063] Optionally, the liquid discharge screw 300 is spaced from the bottom wall of the assembly groove 130, and the explosion-proof column 200 is spaced from the liquid discharge screw 300. By forming a gap between the axial end face of the explosion-proof column 200 and the axial end face of the liquid discharge screw 300, the liquid can be collected through this gap, and then it is convenient for the liquid to be discharged from the liquid discharge groove 310 after collection. If this gap is not provided, there will be problems such as the inability to discharge water or slow discharge due to the surface tension of the flowing water. Therefore, by adopting this gap setting, the liquid discharge effect can be further improved.

[0064] In this embodiment, please refer to Figure 2 and Figure 5, a drain groove 310 is formed on the outer periphery of the drain screw 300. Further, there are multiple drain grooves 310, and the multiple drain grooves 310 are spaced apart and distributed on the outer periphery of the drain screw 300. And the multiple drain grooves 310 are all communicated with the gap between the drain screw 300 and the explosion-proof column 200. Thus, after the liquid accumulates in the gap between the drain screw 300 and the explosion-proof column 200, the liquid can be distributed to the multiple drain grooves 310 through this gap, and then the liquid is discharged through the multiple drain grooves 310. Among them, based on the distribution of the gap, the liquid can be evenly discharged from the multiple drain grooves 310, improving the drainage efficiency and further improving the drainage effect.

[0065] In addition, in this embodiment, the drainage device 10 further includes a shield 400. The shield 400 is connected to the drain screw 300 and covers the part of the drain screw 300 exposed from the assembly groove 130. The shield 400 can provide a protective effect on the drain screw 300, thereby preventing the drain screw 300 from being blocked by external substances, ensuring the smoothness of the drain groove 310, and ensuring the stable progress of the drainage work. In addition, the shield 400 can also provide a protective effect on the drain screw 300 to prevent the drain screw 300 from being damaged.

[0066] Optionally, the drain screw 300 can be fixed to the top of the drain screw 300 by screw fixation. At the same time, there is a certain gap between the shield 400 and the outer periphery of the drain screw 300 to facilitate the discharge of liquid.

[0067] Based on the above-provided drainage device 10, a mining equipment is also provided in this embodiment. The mining equipment adopts the above drainage device 10. At the same time, the mining equipment can improve the technical problems of too small gap flow rate and poor drainage effect of the drainage device in the prior art.

[0068] In summary, in the liquid drainage device 10 and the mining equipment, when the liquid drainage device 10 is applied to the mining equipment, the liquid to be drained in the mining equipment can enter the accommodation cavity 120 from the through hole 110, and the liquid entering the accommodation cavity 120 can flow to the assembly groove 130 from the gap between the explosion-proof column body 200 and the inside of the accommodation cavity 120, so as to be discharged through the liquid drainage groove 310 on the liquid drainage screw 300. Among them, since the explosion-proof column body 200 is arranged in the accommodation cavity 120, the explosion-proof column body 200 is eccentrically arranged relative to the central axis of the accommodation cavity 120, which makes the gap between one side of the explosion-proof column body 200 and the inner wall of the accommodation cavity 120 larger. Based on parameters such as the eccentricity of the explosion-proof column body 200 and the width of the gap, it can be obtained that the setting method of the liquid drainage device 10 can improve the liquid drainage flow rate, thereby improving the liquid drainage effect. Based on this, the liquid drainage device 10 provided in this embodiment can solve the technical problems of too small gap flow rate and poor drainage effect of the liquid drainage device in the prior art. The axial length of the explosion-proof column body 200 is less than the axial length of the accommodation cavity 120, and combined with the diameter of the explosion-proof column body 200 being less than the diameter of the accommodation cavity 120, the explosion-proof column body 200 can move in the accommodation cavity 120. Through the movement of the explosion-proof column body 200, it is beneficial to drive the water in the gap to flow out, further improving the liquid drainage effect. Through the setting of the protective cover 400, it can provide a protective effect on the liquid drainage screw 300 and avoid the liquid drainage groove 310 from being blocked, ensuring the stable progress of the liquid drainage operation.

[0069] As described above, the above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A liquid discharging device, characterized in that, Comprising: A seat body (100) having a through hole (110), a receiving cavity (120) and an assembly groove (130) that are sequentially communicated along its axial direction; the aperture of the through hole (110) is smaller than the diameter of the receiving cavity (120), and the diameter of the receiving cavity (120) is smaller than the aperture of the assembly groove (130); An explosion-proof column body (200) placed inside the receiving cavity (120), and a gap is formed between the outer periphery of the explosion-proof column body (200) and the inner wall of the receiving cavity (120); A drain screw (300) assembled in the assembly groove (130); a drain groove (310) is provided on the drain screw (300), and the drain groove (310) communicates with the receiving cavity (120).

2. The liquid discharge device according to claim 1, characterized in that, The receiving cavity (120) is cylindrical, and the explosion-proof column body (200) is cylindrical.

3. The liquid discharging device according to claim 2, wherein, The axial length of the explosion-proof column body (200) is smaller than the axial length of the receiving cavity (120).

4. The liquid discharging device according to claim 2, wherein The difference between the diameter of the explosion-proof column body (200) and the diameter of the receiving cavity (120) ranges from 0.2 mm to 0.4 mm.

5. The liquid discharging device according to claim 1, wherein The drain screw (300) is spaced from the bottom wall of the assembly groove (130), and the explosion-proof column body (200) is spaced from the drain screw (300).

6. The liquid discharging device according to any one of claims 1-5, characterized in that, The drain groove (310) is provided on the outer periphery of the drain screw (300).

7. The liquid discharging device according to claim 6, wherein There are a plurality of the drain grooves (310), and the plurality of drain grooves (310) are spacedly distributed on the outer periphery of the drain screw (300).

8. The liquid discharging device according to any one of claims 1-5, characterized in that, The drain device (10) further includes a shield (400), the shield (400) is connected to the drain screw (300), and covers the part of the drain screw (300) exposed from the assembly groove (130).

9. A mining device, characterized in that, Comprising the drain device (10) according to any one of claims 1-8.

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