Paste crushing device

Abstract

The utility model discloses a paste crushing device. The paste crushing device comprises at least one first screw shaft (1) and at least one second screw shaft (2), the first screw shafts (1) and the second screw shafts (2) are parallel to each other and staggered to form a crushing screen surface, the first screw shafts (1) are driven by a first driving unit to rotate in the forward direction and the reverse direction, and the second screw shafts (2) are driven by a second driving unit to rotate in the forward direction and the reverse direction. And therefore, the paste on the crushing screen surface can be crushed. According to the paste crushing device disclosed by the utility model, the crushing screen surface is formed by utilizing the spiral shaft, and extrusion force is applied to paste through rotation of the spiral shaft, so that the paste is crushed. Specifically, the spiral shaft is used for tearing, scraping and extruding the paste on the crushing screen surface in the rotating process, so that the crushed paste becomes small, and the crushed paste falls down from screen holes.

Description

Technical Field

[0001] The utility model relates to the technical field of paste mud processing, in particular to a paste mud crushing device. Background Art

[0002] There are some impurity blocks such as stones and bricks, or there are agglomerates in the paste mud such as coal mud and calcium carbide mud. The impurity blocks and agglomerates make it difficult to transport the paste mud through pipelines, stir it, and process it.

[0003] In the prior art, only the paste mud is screened, usually using a grid-shaped screen. When the paste mud lumps are large, the grid screen holes of the screen are easily blocked. For this reason, the screen aperture needs to be increased. However, the larger screen aperture reduces the screening effect and cannot effectively remove larger impurity blocks and paste mud lumps. Moreover, the device in the prior art cannot crush the paste mud. Utility Model Content

[0004] The utility model aims to provide a paste mud crushing device to crush the paste mud.

[0005] To achieve the above-mentioned purpose, the utility model provides a paste mud crushing device, which includes at least one first spiral shaft and at least one second spiral shaft, the first spiral shaft and the second spiral shaft are parallel to each other and staggered to form a crushing screen surface, the first spiral shaft is driven by a first driving unit and can rotate forward and reverse, the second spiral shaft is driven by a second driving unit, so that it can rotate forward and reverse, thereby crushing the paste mud on the crushing screen surface.

[0006] The utility model uses a screw shaft to form a crushing screen surface, and applies extrusion force to the paste through the rotation of the screw shaft, thereby crushing the paste. Specifically, the screw shaft tears, scrapes and squeezes the paste on the crushing screen surface during the rotation process, so that the paste is broken into smaller pieces, and the crushed paste falls from the screen holes.

[0007] Preferably, the first helical axis and the second helical axis have the same helical direction and rotate in opposite directions; or

[0008] The first helical axis and the second helical axis have opposite helical directions and the same rotation direction,

[0009] Thus, the first screw shaft and the second screw shaft apply axial forces in opposite directions to the mud on the crushing screen surface.

[0010] When the axial pushing speeds of two adjacent spiral shafts on the paste are equal and opposite, the paste can stay on the spiral screen for a long time, so that the spiral blades on the adjacent spiral shafts continue to tear, scrape and squeeze the paste to make it smaller, which can greatly improve the crushing performance.

[0011] Preferably, the spiral blades of the first spiral shaft and / or the second spiral shaft are provided with cutting teeth, and the cutting teeth are located on the outer cylindrical surface of the spiral blades, and the rotation direction of the cutting teeth is opposite to the rotation direction of the spiral blades where the cutting teeth are located.

[0012] Preferably, the number of the first spiral shafts and the number of the second spiral shafts are both plural and are staggered with each other.

[0013] Preferably, all the first screw shafts are driven by a first motor, and all the second screw shafts are driven by a second motor, and the direction of the first screw shaft and / or the second screw shaft is changed by switching the motor forward and reverse.

[0014] Preferably, the first spiral shaft and the second spiral shaft are arranged to fluctuate in height, so that the screen surface is wavy, and the first spiral shaft and / or the second spiral shaft located at the crest of the wave blocks the lateral movement of the paste.

[0015] Preferably, a plurality of screw shafts together form a trough screen surface, wherein two or more screw shafts are located at the bottom of the trough screen surface and at the same lower height; two screw shafts are at a higher height,

[0016] The center distance between the two spiral axes at a higher height is greater than the maximum center distance between the spiral axes at a lower height.

[0017] Preferably, the sludge crushing device also includes a material blocking baffle, which is located above the first spiral shaft and / or the second spiral shaft. The material blocking baffle is vertically arranged and parallel to the axis of the spiral shaft, and is used to block the lateral movement of the sludge and prevent the sludge from gathering on one side of the spiral screen surface, so as to improve the utilization rate of the spiral screen surface.

[0018] Preferably, the paste crushing device comprises a plurality of adjacently arranged trough-shaped screen surfaces, wherein the adjacent trough-shaped screen surfaces share a screw shaft located at a higher height.

[0019] Preferably, a material blocking baffle is provided above each common spiral shaft, and the material blocking baffle is used to block the lateral movement of the paste mud and prevent the paste mud from gathering on one side of the spiral screen surface, so as to improve the utilization rate of the spiral screen surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereoscopic diagram of a paste crushing device according to an embodiment of the utility model.

[0021] Figure 2 yes Figure 1 An enlarged view of point C of the paste crushing device shown.

[0022] Figure 3 yes Figure 1 A top view of the paste crushing device shown.

[0023] Figure 4 is along Figure 3 Section view along line AA.

[0024] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle.

[0025] Figure 6 It is a stereoscopic diagram of the driving mechanism of the paste crushing device according to an embodiment of the utility model.

[0026] In the figure: 1 first screw shaft, 2 second screw shaft, 3 driving mechanism, 31 first driving unit, 311 power output end A, 32 second driving unit, 321 power output end B, 4 material blocking plate, 5 cutting teeth DETAILED DESCRIPTION

[0027] In the drawings, the same or similar reference numerals are used to represent the same or similar elements or elements with the same or similar functions. The embodiments of the present utility model are described in detail below in conjunction with the drawings.

[0028] In the description of the present invention, the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0029] The best implementation mode of the present invention is described below through preferred embodiments in conjunction with the accompanying drawings. The specific implementation mode here is to illustrate the present invention in detail and should not be understood as a limitation to the present invention. Various deformations, modifications and combinations can be made without departing from the spirit and substantial scope of the present invention, which should all be included in the protection scope of the present invention.

[0030] The spiral screening machine of the prior art is mainly used for screening and grading block materials (such as coal) without crushing the materials, because if the coal blocks are crushed, their grade and value will be affected.

[0031] Figures 1 to 6The schematic diagram of the structure of the paste crushing device of the embodiment of the utility model is shown. The paste crushing device comprises a first spiral shaft 1, a second spiral shaft 2, a driving mechanism 3, a longitudinal partition 4, and a cutting tooth 5. The driving mechanism 3 further comprises a first driving unit 31 and a second driving unit 32. The first driving unit 31 has a power output end A, and the second driving unit 32 has a power output end B. The spiral blades of the first spiral shaft 1 and the second spiral shaft 2 are provided with cutting teeth 5, and the rotation direction of the cutting teeth is opposite to the rotation direction of the spiral blades.

[0032] That is to say, the paste mud crushing device of the illustrated embodiment includes at least one first screw shaft 1 and at least one second screw shaft 2, the first screw shaft 1 and the second screw shaft 2 are parallel to each other and staggered to form a crushing screen surface, the first screw shaft 1 is driven by a first driving unit and can rotate forward and reverse, the second screw shaft 2 is driven by a second driving unit and can rotate forward and reverse, thereby crushing the paste mud on the crushing screen surface.

[0033] The utility model uses a screw shaft to form a crushing screen surface, and applies extrusion force to the paste through the rotation of the screw shaft, thereby crushing the paste. Specifically, the screw shaft tears, scrapes and squeezes the paste on the crushing screen surface during the rotation process, so that the paste is broken into smaller pieces, and the crushed paste falls from the screen holes.

[0034] It can be understood that the first spiral shaft 1 and the second spiral shaft 2 are parallel to each other, and a screen surface is formed with the first spiral shaft 1 and the second spiral shaft 2 as screen bars and the gaps between adjacent first spiral shafts 1 and second spiral shafts 2 as screen holes, so that smaller portions of the paste that do not need to be crushed can directly fall through.

[0035] The center distance between the adjacent first spiral shaft 1 and the second spiral shaft 2 is greater than the sum of the gyration radii of their spiral blades. The rotation speed and / or rotation direction of the first spiral shaft 1 and / or the second spiral shaft 2 can be adjusted, and the speed and / or direction of the axial advancement of the paste by the first spiral shaft 1 and / or the second spiral shaft 2 can be changed by adjusting the rotation speed and / or rotation direction of the first spiral shaft 1 and / or the second spiral shaft 2.

[0036] When crushing the paste, the first screw shaft (1) and the second screw shaft (2) apply axial propulsion to the paste in opposite directions and at the same speed; one screw shaft pushes forward from one side and the other screw shaft drags backward from the other side, and the paste is torn, scraped and squeezed to break it into smaller pieces and fall from the sieve holes.

[0037] In one embodiment of the utility model, the first screw shaft 1 and the second screw shaft 2 apply axial forces in opposite directions to the paste on the crushing screen surface, thereby extending the residence time of the paste on the screen surface to improve the crushing effect. For example, the first screw shaft 1 and the second screw shaft 2 have the same spiral direction and rotate in opposite directions; or the first screw shaft 1 and the second screw shaft 2 have opposite spiral directions and rotate in the same direction.

[0038] When the axial pushing speeds of two adjacent spiral shafts on the paste are equal and opposite, the paste can stay on the spiral screen for a long time, so that the spiral blades on the adjacent spiral shafts continue to tear, scrape and squeeze the paste to make it smaller, which can greatly improve the crushing performance.

[0039] As shown in the figure, the spiral blades of the first spiral shaft 1 and / or the second spiral shaft 2 are provided with cutting teeth 5, which are located on the outer cylindrical surface of the spiral blades, and the rotation direction of the cutting teeth 5 is opposite to the rotation direction of the spiral blades where they are located. The cutting teeth on the spiral blades can enhance the tearing and scraping effect of the spiral blades on the paste, thereby enhancing the crushing effect.

[0040] In an optional embodiment, as shown in the figure, the number of the first spiral shaft 1 and the number of the second spiral shaft 2 are both plural, and they are staggered with each other.

[0041] As for the specific driving mode, any appropriate form can be adopted. For example, all the first screw shafts 1 are driven by a first motor, and all the second screw shafts 2 are driven by a second motor, and the direction of the first screw shaft 1 and / or the second screw shaft 2 is changed by the forward and reverse direction of the motor.

[0042] See also Figure 4 The plurality of first spiral shafts 1 and second spiral shafts 2 can be arranged to fluctuate in height, so that the screen surface is wavy, and the first spiral shaft 1 and / or the second spiral shaft 2 located at the wave crest can block the lateral movement of the paste, thereby ensuring that the extrusion force is applied to the paste.

[0043] See also Figure 4 , a plurality of spiral shafts 2 can form a trough screen surface together. Among them, two or more spiral shafts are located at the bottom of the trough screen surface and at the same lower height; two spiral shafts are at a higher height.

[0044] The center distance between the two spiral axes at a higher height is greater than the maximum center distance between the spiral axes at a lower height.

[0045] See also Figure 4The paste crushing device can include a material blocking baffle 4, which is located above the first spiral shaft 1 and / or the second spiral shaft 2. The material blocking baffle 4 is vertically arranged and parallel to the axis of the spiral shaft, and is used to block the lateral movement of the paste to prevent the paste from gathering on one side of the spiral screen surface, so as to improve the utilization rate of the spiral screen surface.

[0046] It should be pointed out that the paste crushing device comprises a plurality of adjacently arranged trough-shaped screen surfaces, wherein the adjacent trough-shaped screen surfaces share a screw shaft located at a higher height.

[0047] Advantageously, a material blocking baffle 4 is provided above each common spiral shaft, and the material blocking baffle 4 is used to block the lateral movement of the paste mud and prevent the paste mud from gathering on one side of the spiral screen surface, so as to improve the utilization rate of the spiral screen surface.

[0048] When the paste is crushed and screened, since the adjacent spiral shafts can exert opposite axial forces on the material on the screen, the movement speed of the paste material on the screen surface along the axis of the spiral shaft is the composite speed of the pushing speeds of the two adjacent spiral shafts. When the pushing speeds of the two adjacent spiral shafts on the paste are equal and opposite in direction, the paste can stay on the spiral screen surface for a long time, and the spiral blades on the adjacent spiral shafts tear, scrape and squeeze the paste to break it into smaller pieces and let it fall through the screen holes.

[0049] Since the spiral blades of the adjacent spiral shafts on the dynamic screen surface can exert axial forces in opposite directions on the material on the screen, when the material on the screen is piled up more (for example, when the paste material just dropped from the grab or loader), the material accumulation area is larger and the accumulation height is higher. The accumulated material as a whole is subjected to the axial forces exerted on it by multiple spiral shafts. The torques generated by the axial forces partially or completely offset each other. In addition, the blocking effect of the longitudinal partition and the raised spiral shaft prevents the material from rotating. The spiral blades have a strong tearing and scraping effect on the paste, which can quickly crush the paste. When the paste is less accumulated, the paste can rotate in place under the thrust of the two adjacent shafts, so that the spiral blades can tear and scrape the paste from multiple angles, which can crush the paste more thoroughly and greatly reduce the number of impurities on the screen. On the other hand, when larger or long lumps of paste and mud are stuck in the gap between two adjacent spiral shafts and cannot rotate, the spiral blades will also tear and scrape the material on the screen, and the paste and mud on its surface will be peeled off and gradually become smaller, which improves the screening efficiency and achieves the crushing effect.

[0050] When the paste mud rolls and flips in the vertical plane, the soft mud adhering to the upper part of the paste mud lumps and block impurities can also be transferred to the bottom, and then torn and scraped off by the spiral blades of the spiral shaft, thereby realizing all-round tearing and scraping of the paste mud lumps and block impurities, screening out fewer impurities, reducing the subsequent workload of processing the screened material, and improving the resource utilization rate of the paste mud.

[0051] When two adjacent spiral shafts rotate in the same direction, they can apply torque in the same direction to part or all of the paste lumps and block impurities above them in the vertical plane, causing them to roll and flip in the vertical plane, thereby flipping the small pieces of paste or crushed materials covering them to the bottom and passing through the screen surface and falling down, which not only solves the problem of blocked screen holes, but also eliminates the screening dead zone at the top of the material.

[0052] The present invention can also be modified to form new embodiments by the following changes:

[0053] The spiral blades of the first spiral shaft 1 and the second spiral shaft 2 have the same rotation direction and the same pitch. When crushing and screening are performed, the two adjacent first spiral shafts 1 and the second spiral shafts 2 rotate in opposite directions and have the same rotation speed.

[0054] The spiral blades of the first spiral shaft 1 and the second spiral shaft 2 have the same rotation direction and different pitches. When crushing and screening are performed, the rotation directions of the two adjacent first spiral shafts 1 and second spiral shafts 2 are opposite, and the speed of the spiral shaft with a larger pitch is lower than the speed of the spiral shaft with a smaller pitch.

[0055] The spiral blades of the first spiral shaft 1 and the second spiral shaft 2 have opposite rotation directions and the same pitch. When crushing and screening are performed, the two adjacent first spiral shafts 1 and the second spiral shafts 2 have the same rotation direction and the same speed.

[0056] The spiral blades of the first spiral shaft 1 and the second spiral shaft 2 have opposite rotation directions and different pitches. When crushing and screening is performed, the two adjacent first spiral shafts 1 and the second spiral shaft 2 have the same rotation direction, and the speed of the spiral shaft with a larger pitch is lower than the speed of the spiral shaft with a smaller pitch.

[0057] The driving mechanism 3 includes a plurality of first driving units 31 and a plurality of second driving units 32 . Each first driving unit 31 has a power output terminal A311 and is connected to a first screw shaft 1 . Each second driving unit 32 has a power output terminal A321 and is connected to a second screw shaft 2 .

[0058] The driving mechanism 3 includes a first driving unit 31 and a second driving unit 32, each first driving unit 31 has multiple power output ends A311, and each power output end A311 is connected to a first screw shaft 1, each second driving unit 32 has multiple power output ends B321, and each power output end B321 is connected to a second screw shaft 2.

[0059] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Those skilled in the art should understand that the technical solutions described in the above embodiments can be modified, or some of the technical features can be replaced by equivalents; 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 paste crushing device, characterized in that: The invention comprises at least one first screw shaft (1) and at least one second screw shaft (2), wherein the first screw shaft (1) and the second screw shaft (2) are parallel to each other and arranged in an interlaced manner to form a crushing screen surface, wherein the first screw shaft (1) is driven by a first driving unit to rotate in a forward direction and a reverse direction, and the second screw shaft (2) is driven by a second driving unit to rotate in a forward direction and a reverse direction, thereby crushing the paste on the crushing screen surface.

2. The paste crushing device according to claim 1, characterized in that: The first spiral axis (1) and the second spiral axis (2) have the same spiral direction and rotate in opposite directions; or The first spiral shaft (1) and the second spiral shaft (2) have opposite spiral directions and the same rotation direction. Therefore, the first screw shaft (1) and the second screw shaft (2) exert axial forces in opposite directions on the material on the screen.

3. The paste crushing device according to claim 1, characterized in that: The spiral blades of the first spiral shaft (1) and / or the second spiral shaft (2) are provided with cutting teeth (5), the cutting teeth (5) being located on the outer cylindrical surface of the spiral blade, and the rotation direction of the cutting teeth (5) being opposite to the rotation direction of the spiral blade on which the cutting teeth (5) are located.

4. The paste crushing device according to claim 1, characterized in that: The first spiral shafts (1) and the second spiral shafts (2) are both multiple in number and are arranged in an interlaced manner.

5. The paste crushing device according to claim 4, characterized in that: All first screw shafts (1) are driven by a first motor, and all second screw shafts (2) are driven by a second motor. The direction of rotation of the first screw shaft (1) and / or the second screw shaft (2) is changed by switching the motor forward and reverse.

6. The paste crushing device according to claim 4, characterized in that: The first spiral shaft (1) and the second spiral shaft (2) are arranged to fluctuate in height, so that the screen surface is wavy, and the first spiral shaft (1) and / or the second spiral shaft (2) located at the crest of the wave blocks the lateral movement of the paste.

7. The paste crushing device according to claim 6, characterized in that: A plurality of spiral shafts (2) together form a trough-type screen surface, wherein two or more spiral shafts are located at the bottom of the trough-type screen surface and at the same lower height; two spiral shafts are at a higher height, The center distance between the two spiral axes at a higher height is greater than the maximum center distance between the spiral axes at a lower height.

8. The paste crushing device according to any one of claims 1 to 7, characterized in that: It also includes a material blocking baffle (4) disposed above the first spiral shaft (1) and / or the second spiral shaft (2). The material blocking baffle (4) is disposed vertically and parallel to the axis of the spiral shaft, and is used to block the lateral movement of the paste and prevent the paste from gathering on one side of the spiral screen surface, so as to improve the utilization rate of the spiral screen surface.

9. The paste crushing device according to claim 7, characterized in that: The utility model comprises a plurality of adjacently arranged trough-type screen surfaces, wherein the adjacent trough-type screen surfaces share a screw shaft located at a higher height.

10. The paste crushing device according to claim 9, characterized in that: A material blocking baffle (4) is arranged above each common spiral shaft, and the material blocking baffle (4) is used to block the lateral movement of the paste mud and prevent the paste mud from gathering on one side of the spiral screen surface, so as to improve the utilization rate of the spiral screen surface.

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