Mobile crushing station

Abstract

The application belongs to the field of mobile crushing equipment and discloses a mobile crushing station, which comprises a vibrating feeder, a vibrating screen machine and a feeding tail extending forward; the vibrating screen machine comprises a vibrating screen deck located at the top, and the feeding tail is overlapped above the front part of the screen deck of the vibrating screen machine; wherein a plurality of long strip screen holes and a plurality of circular screen holes are arranged on the vibrating screen deck, the long strip screen holes are distributed on the front part of the screen deck and used for receiving the incoming materials of the feeding tail, the circular screen holes are away from the feeding tail relative to the long strip screen holes, and the minimum aperture width of the long strip screen holes is greater than the circular aperture of the circular screen holes. The long strip screen holes with large aperture are arranged at the overlapping part between the vibrating feeder and the screen deck of the vibrating screen machine and the adjacent area thereof, the area of the long strip screen holes is large, and the material flow passing through per unit time is large, so that the large block materials and viscous materials in the incoming materials can leak out from the long strip screen holes, and the circular screen holes are not blocked, and the material accumulation is not easily formed, so that the safe operation of the equipment is ensured.

Description

Technical Field

[0001] This application belongs to the field of mobile crushing equipment, specifically, it relates to a mobile crushing station. Background Technology

[0002] When crushing operations are carried out in a mobile crushing plant and the raw materials are pre-screened, a feeding method is usually adopted in which a vibrating feeder feeds the material to the vibrating screen, so that the material is fed between the excavator and the loader, and then the raw material is pre-screened on the screen plate.

[0003] However, material, especially large particles or sticky materials, easily accumulates at the overlap between the screen plates of the vibrating feeder and the vibrating screen. This accumulation causes indirect collisions between the vibrating feeder and the accumulated material on the vibrating screen during operation. Prolonged operation under such conditions will inevitably lead to malfunctions such as polarization and exciter damage in both the vibrating feeder and the vibrating screen. Utility Model Content

[0004] To overcome at least one of the aforementioned technical deficiencies, this application provides a mobile crushing plant that can ensure the long-term stable operation of the vibrating feeder and vibrating screen, thereby extending the service life of the equipment.

[0005] To achieve the above objectives, this application provides a mobile crushing plant, the mobile crushing plant comprising: A vibrating feeder, including a forward-extending feeding tail section; A vibrating screen includes a vibrating screen plate located at the top, with the feed tail end overlapping directly above the front part of the vibrating screen plate; The vibrating screen plate is provided with a number of elongated screen holes and a number of circular screen holes. The elongated screen holes are distributed at the front of the screen plate and are used to receive the material coming from the feed tail. The circular screen holes are far away from the feed tail relative to the elongated screen holes, and the minimum aperture width of the elongated screen holes is greater than the circular aperture of the circular screen holes.

[0006] In some embodiments, the vibrating screen plate extends obliquely downward along the conveying direction of the vibrating screen and includes a head screen plate and a tail screen plate arranged along the conveying direction, with the elongated screen holes disposed at the head of the head screen plate.

[0007] In some embodiments, the orthographic projection of the tail edge of the feed tail falls within the elongated screen hole distribution area at the front of the head screen plate, where the elongated screen holes are arranged in multiple rows and columns.

[0008] In some embodiments, the head sieve plate includes a front sieve hole area and a rear sieve hole area arranged at intervals. The rear sieve hole area is evenly distributed with circular sieve holes. The elongated sieve hole distribution area is located in front of the front sieve hole area, and the rear of the front sieve hole area is also evenly distributed with circular sieve holes.

[0009] In some embodiments, the tail sieve plate is provided with a plurality of circular sieve hole distribution areas at intervals, and each of the circular sieve hole distribution areas is provided with a plurality of the circular sieve holes.

[0010] In some embodiments, the elongated sieve holes are waist-shaped holes.

[0011] In some embodiments, the aperture width of the elongated sieve holes is not less than 1.5 times the diameter of the circular sieve holes.

[0012] In some embodiments, the length direction of the elongated screen holes is perpendicular to the material conveying direction of the vibrating screen.

[0013] In some embodiments, the vibrating screen plate further includes a lower screen plate spaced below the vibrating screen plate.

[0014] In some embodiments, the vibrating screen plate is made of NM450 wear-resistant plate.

[0015] This application incorporates both elongated and circular screen holes on the vibrating screen plate of a vibrating screen separator. Specifically, large-diameter elongated screen holes are strategically placed at the overlap between the vibrating feeder and the screen plate of the vibrating screen separator, and in the adjacent area. The large area of ​​these elongated screen holes allows for a high material flow rate per unit time, enabling large pieces and sticky materials to pass through without clogging the circular screen holes. This also reduces the likelihood of material accumulation and hardening. When applied to raw material pre-screening operations, this effectively prevents material accumulation on the first-layer head screen plate of the screen separator, ensuring safe equipment operation and enhancing the pre-screen separator's adaptability to different raw materials.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 This is a structural schematic diagram of a mobile crushing plant according to a specific embodiment of this application; Figure 2 This is a structural schematic diagram of a vibrating screen in a mobile crushing plant according to a specific embodiment of this application; Figure 3 for Figure 2 The diagram shows the structure of the head screen plate in the vibrating screen.

[0018] Explanation of reference numerals in the attached figures Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] The mobile crushing station according to this application is described below with reference to the accompanying drawings.

[0021] This application discloses a novel mobile crushing station. For example... Figures 1 to 3 As shown, in one specific embodiment, the mobile crushing station includes: The vibrating feeder 10 includes a forward-extending feeding tail section 101; The vibrating screen 20 includes a vibrating screen plate 201 located at the top, and a feeding tail 101 overlapping directly above the front part of the vibrating screen plate 201. The vibrating screen plate 201 is provided with several elongated screen holes 2 and several circular screen holes 1. The elongated screen holes 2 are distributed at the front of the screen plate and are used to receive the material from the feed tail 101. The circular screen holes 1 are far away from the feed tail 101 relative to the elongated screen holes 2, and the minimum aperture width of the elongated screen holes 2 is greater than the circular aperture of the circular screen holes 1.

[0022] This application aims to solve the problem that material accumulation easily forms at the overlap between the screen plates of the vibrating feeder 10 and the vibrating screen 20, leading to malfunctions such as polarization and exciter damage. Therefore, to eliminate material accumulation, this application... Figure 1 The joint between the two machines shown, namely the front part of the vibrating screen plate 201, has been modified in terms of the screen holes and their combination to minimize material accumulation and reduce the probability of clogging.

[0023] In traditional conventional screen plate designs, the screen plate openings generally use a uniform aperture, neglecting the presence of sticky materials, large pieces of material, and the material flow at the feeding point of the vibrating screen head. This leads to material accumulation and hardening. The hardened material accumulation reduces the safe amplitude distance between the vertical fluctuations of the two machines during inertial vibration, causing indirect collisions between the equipment and resulting in polarization of the vibrating equipment. After prolonged operation, this can even lead to exciter damage and housing cracking.

[0024] Therefore, the vibrating screen plate 201 of this application is provided with two types of screen holes at the front, namely, elongated screen holes 2 and circular screen holes 1. At the overlap between the screen plates of the vibrating feeder 10 and the vibrating screen 20 and in the adjacent area, large-diameter elongated screen holes 2 are arranged as much as possible. The minimum aperture width of the elongated screen holes 2 is larger than the circular aperture of the circular screen holes 1. After receiving the material from the feed tail 101, most of the large pieces of material can be leaked out from the elongated screen holes 2. In particular, sticky materials, although they are easy to clog the circular screen holes, are difficult to clog the elongated screen holes 2. Even if they are clogged, they are not easy to accumulate. The material blocks accumulated on top are easy to crush the sticky material in the middle of the elongated screen holes.

[0025] Furthermore, the elongated screen aperture 2 has a larger area, allowing for a greater material flow rate per unit time, at least double that of the circular screen aperture 1. Therefore, it can handle even high material flow conditions and is less prone to material accumulation. It is evident that this application achieves excellent technical results through simple design improvements.

[0026] In addition, a retaining plate can be added at the overlap between the screen plates of the vibrating feeder 10 and the vibrating screener 20, and manual inspections can be increased to actively eliminate the risk of material accumulation, thereby increasing the operational stability of the feeding pre-screening system.

[0027] See Figure 1 , Figure 2 In this embodiment, the vibrating screen plate 201 extends downward at an inclination along the conveying direction H of the vibrating screener 20 and includes a head screen plate 2011 and a tail screen plate 2012 arranged along the conveying direction H. The elongated screen holes 2 are provided at the head of the head screen plate 2011. Figure 2 The head of the head sieve plate 2011 shown is in Figure 1 The material will be embedded below the feeding tail 101 of the vibrating feeder 10, and the two will overlap. Therefore, long strip screen holes 2 should be provided at this overlap to facilitate the downward screening of large pieces of material and sticky materials.

[0028] Specifically, Figure 1 The orthographic projection of the tail edge 1011 of the feed tail section 101 shown preferably falls within the elongated screen hole distribution area C at the front of the head screen plate 2011. See [reference needed]. Figure 3 In the distribution area C of the elongated sieve holes, the elongated sieve holes 2 are arranged in multiple rows and columns. See also Figure 1 Ensure that the material falls into the feed tail 101 at the tail edge 1011. Figure 3When the elongated screen aperture distribution area C is shown, large pieces or sticky materials in the feed are more likely to leak out of the elongated screen apertures and will not clog other circular screen apertures. In contrast, if the feed material at the tail edge 1011 falls into the circular screen aperture 1 adjacent to the elongated screen aperture distribution area C, it is difficult to avoid a small portion of large pieces or sticky materials adhering to the head screen plate 2011, forming material accumulation, or moving along the conveying direction H to the tail screen plate 2012.

[0029] In this embodiment, as an example, the head sieve plate 2011 includes a front sieve hole area and a rear sieve hole area arranged at intervals. The rear sieve hole area is evenly distributed with circular sieve holes 1. An elongated sieve hole distribution area C is located at the front of the front sieve hole area, and the rear of the front sieve hole area is also evenly distributed with circular sieve holes 1. Figure 3 As shown, this embodiment only requires minimal modification to the existing conventional sieve plate sieve hole design, simply dividing a small area C into elongated sieve hole distribution zones to arrange the elongated sieve holes.

[0030] like Figure 3 As shown, the tail sieve plate 2012 also has multiple circular sieve hole distribution areas arranged at intervals, with multiple circular sieve holes 1 evenly distributed in each circular sieve hole distribution area. The tail sieve plate 2012 adopts the existing conventional sieve plate sieve hole design, generally designed according to the requirements of national standard JB9031-1999. Multiple circular sieve hole distribution areas are arranged at intervals on the plate surface to maximize the total sieve hole area while ensuring the structural strength of the sieve plate. Of course, the size of the sieve plate, the diameter of the circular holes, and the distribution of the circular holes can be adjusted according to different operating conditions.

[0031] The purpose of the elongated screen holes 2 is to maximize the leakage of large or sticky materials. Since the screen plate vibrates during operation, if the expected maximum length of the large material is X, it does not need to be designed as a round or elliptical hole with a diameter of X; it can be designed as an elongated hole with a length not less than X. The large material will adjust its position in real time during vibration and leak out through the elongated holes. Thus, the elongated hole design saves more plate space compared to large-diameter round holes and is also more beneficial to the structural strength of the plate.

[0032] In this embodiment, the elongated screen holes 2 are designed as waist-shaped holes. Waist-shaped holes are easier to process, and compared to rectangular holes, materials can more easily leak out of the waist-shaped holes, with less obstruction from the corners of rectangular holes. Of course, the elongated screen holes 2 are not limited to waist-shaped holes; other elongated irregularly shaped holes can be used.

[0033] Specifically, in this embodiment, the width of the elongated screen aperture 2 is not less than 1.5 times the diameter of the circular screen aperture 1. The larger the width and length of the elongated screen aperture 2, the better the passage of large materials. Similarly, this embodiment is only an example, and the specific dimensions and parameters of the elongated screen aperture 2 in this application are not limited thereto.

[0034] Regarding the orientation of the elongated screen holes 2, in this embodiment, the length direction of the elongated screen holes 2 is perpendicular to the material conveying direction H of the vibrating screen 20. For example... Figure 2 , Figure 3 As shown, multiple elongated screen holes 2 are arranged sequentially along the width of the screen plate. That is, when the length direction of the elongated screen holes 2 is perpendicular to the conveying direction H of the vibrating screen 20, compared to an arrangement where the length direction of the elongated screen holes 2 is parallel to the conveying direction H, the illustrated arrangement of multiple elongated screen holes 2 provides a larger coverage area in the width direction, resulting in a higher pass rate for large or sticky materials. Multiple experimental results also show that when the length direction of the elongated screen holes 2 is perpendicular to the conveying direction H of the vibrating screen 20, large and sticky materials are less likely to accumulate, and the effect is more pronounced than when the length direction of the elongated screen holes 2 is parallel to the conveying direction H or when the elongated screen holes 2 are trapezoidal screen holes along the conveying direction H.

[0035] In the mobile crushing plant of this application, the vibrating screen plate 201 of the vibrating screen 20 also includes lower screen plates spaced below the vibrating screen plate 201. The lower screen plates are not limited to one layer; thus, the multi-layer screen plate structure enables better particle classification. Furthermore, to achieve lightweight and durability, the vibrating screen plate 201 of this embodiment is made of NM450 wear-resistant steel plate. Of course, the material of the vibrating screen plate 201 is not limited to this; other available materials can also be used, which will not be elaborated upon here.

[0036] Reference Figure 1 The feeding and screening equipment is arranged such that the material from the mine enters the vibrating screen 20 via the vibrating feeder 10, and the overlap between the two is used... Figure 2 , Figure 3 The new sieve plate structure shown, namely the head sieve plate 2011, differs from other sieve plates in that it changes the traditional opening rules of the sieve plate holes. Instead of the circular holes specified by the national standard, it changes to waist-shaped holes. The diameter of the waist-shaped holes is more than 1.5 times that of the circular holes, and the spacing can be designed according to the national standard JB9031-1999.

[0037] Based on the traditional design in accordance with national standards, the design has been improved to fully consider the possible sudden accidents that may occur when the two vibrating devices move independently. The material of the head screen plate 2011 has been upgraded from the traditional Q345B or NM400 to NM450 material, which improves the wear resistance.

[0038] The screen hole design of this head screen plate 2011 is mainly used for raw material pre-screening operations. It can effectively prevent material accumulation on the first head screen plate of the screening machine. When the material enters the vibrating screen 20 from the vibrating feeder 10, even if the equipment stops suddenly, the vibration intensity of any equipment is changed, or the incoming material contains a lot of wet soil, the material is not easy to accumulate here. The waist-shaped holes of the screen plate can quickly discharge material, ensuring the safe operation of the equipment.

[0039] In summary, the waist-shaped perforations of the head screen plate 2011 in the mobile crushing plant of this application can prevent material accumulation and improve the adaptability of the pre-screening machine to raw materials. This improved structure can be widely used in mobile crushing plants, providing a basis for comprehensive life-cycle evaluation in the new product design stage.

[0040] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A mobile crushing station, characterized in that, The mobile crushing station includes: The vibrating feeder (10) includes a forward-extending feeding tail (101). The vibrating screen (20) includes a vibrating screen plate (201) located at the top, and the feed tail (101) overlaps directly above the front part of the vibrating screen plate (201). The vibrating screen plate (201) is provided with a number of elongated screen holes (2) and a number of circular screen holes (1). The elongated screen holes (2) are distributed at the front of the screen plate and are used to receive the material from the feed tail (101). The circular screen holes (1) are far away from the feed tail (101) relative to the elongated screen holes (2), and the minimum aperture width of the elongated screen holes (2) is greater than the circular aperture of the circular screen holes (1).

2. The mobile crushing station according to claim 1, characterized in that, The vibrating screen plate (201) extends downward at an inclination along the conveying direction (H) of the vibrating screener (20) and includes a head screen plate (2011) and a tail screen plate (2012) arranged along the conveying direction (H). The elongated screen hole (2) is located at the head of the head screen plate (2011).

3. The mobile crushing station according to claim 2, characterized in that, The orthographic projection of the tail edge (1011) of the feed tail (101) falls within the long strip screen hole distribution area (C) at the front of the head screen plate (2011). In the long strip screen hole distribution area (C), the long strip screen holes (2) are arranged in multiple rows and columns.

4. The mobile crushing station according to claim 3, characterized in that, The head sieve plate (2011) includes a front sieve hole area and a rear sieve hole area arranged at intervals. The rear sieve hole area is evenly distributed with the circular sieve holes (1). The elongated sieve hole distribution area (C) is located in front of the front sieve hole area. The rear of the front sieve hole area is also evenly distributed with the circular sieve holes (1).

5. The mobile crushing station according to claim 2, characterized in that, The tail sieve plate (2012) has multiple circular sieve hole distribution areas arranged at intervals, and each circular sieve hole distribution area is evenly distributed with multiple circular sieve holes (1).

6. The mobile crushing station according to any one of claims 1 to 5, characterized in that, The elongated sieve hole (2) is a waist-shaped hole.

7. The mobile crushing station according to claim 6, characterized in that, The width of the elongated sieve hole (2) is not less than 1.5 times the diameter of the circular sieve hole (1).

8. The mobile crushing station according to claim 6, characterized in that, The length direction of the long strip screen hole (2) is perpendicular to the material conveying direction (H) of the vibrating screen (20).

9. The mobile crushing station according to claim 1, characterized in that, The vibrating screen plate (201) also includes a lower screen plate arranged at intervals below the vibrating screen plate (201).

10. The mobile crushing station according to claim 1, characterized in that, The vibrating screen plate (201) is made of NM450 wear-resistant plate.

Images