阅读说明：本技术 砂石防堵筛分装置 (Sand blocking-proof screening device ) 是由 何定元 周宗坤 刘元刚 王强 于 2021-01-07 设计创作，主要内容包括：本发明公开了一种砂石防堵筛分装置,包括设置于筛机侧板上的振动装置,所述筛机包括箱体,所述振动装置设置于所述箱体上,所述箱体底部设置支撑机构,所述支撑机构包括内轴、弹簧装置和支撑轴套,所述内轴上端与所述箱体底部连接,所述弹簧装置设置于所述内轴上,所述内轴和所述弹簧装置插入所述支撑轴套内；所述箱体内设置砂石防堵装置；所述砂石防堵装置包括防堵旋转机构、防堵传动机构和防堵动力装置,所述防堵旋转机构位于所述箱体底部上方,所述防堵传动机构带动所述防堵旋转机构连接,所述防堵动力装置与所述防堵传动机构连接。本发明通过砂石防堵装置可以推动堆积的砂石,充分利用筛网,防止堵塞,提高了筛分效率。(The invention discloses a sand anti-blocking screening device which comprises a vibrating device arranged on a side plate of a screening machine, wherein the screening machine comprises a box body, the vibrating device is arranged on the box body, the bottom of the box body is provided with a supporting mechanism, the supporting mechanism comprises an inner shaft, a spring device and a supporting shaft sleeve, the upper end of the inner shaft is connected with the bottom of the box body, the spring device is arranged on the inner shaft, and the inner shaft and the spring device are inserted into the supporting shaft sleeve; a sand and stone anti-blocking device is arranged in the box body; the gravel anti-blocking device comprises an anti-blocking rotating mechanism, an anti-blocking transmission mechanism and an anti-blocking power device, wherein the anti-blocking rotating mechanism is located above the bottom of the box body, the anti-blocking transmission mechanism drives the anti-blocking rotating mechanism to be connected, and the anti-blocking power device is connected with the anti-blocking transmission mechanism. The sand blocking prevention device can push accumulated sand, fully utilizes the screen, prevents blockage and improves the screening efficiency.)

1. The sand blocking-preventing screening device is characterized by comprising a vibration device arranged on a side plate of a screening machine, wherein the vibration device comprises a main shaft (1), an eccentric mechanism (4), a bearing (9), a bearing retainer ring (10), a bearing gland (11), an upper pressure-bearing device (17) and an oil cup (18); the two eccentric mechanisms (4) are respectively fixedly connected with the main shaft (1) through a key (3), one part of the key (3) is clamped into a key groove of the main shaft (1), the other part of the key (3) is clamped into a clamping groove of the eccentric mechanism (4), and the eccentric mechanism (4) and the main shaft (1) synchronously rotate through the key (3); the eccentric mechanism (4) comprises a main eccentric block (2) and an auxiliary eccentric block (5), a main eccentric fixing part (6) of the main eccentric block (2) is positioned on one side of the eccentric mechanism (4), and an auxiliary eccentric fixing part (7) of the auxiliary eccentric block (5) is positioned on the other side of the eccentric mechanism (4) which is in central symmetry with the main eccentric block (2) by using the axial center line of the main shaft (1); the main eccentric block (2) is connected with the main eccentric fixing part (6) through an adjusting bolt (8), the auxiliary eccentric block (5) is connected with the auxiliary eccentric fixing part (7), and the main eccentric block (2) and the auxiliary eccentric block (5) can be adjusted to change an included angle between the main eccentric block (2) and the auxiliary eccentric block (5); a bearing (9) is arranged on the main shaft (1) between the two eccentric mechanisms (4), and two bearing retainer rings (10) positioned on the circumferential direction of the main shaft (1) are respectively arranged at two ends of the lower part of the bearing (9); bearing glands (11) are further arranged at two ends of the bearing (9), a circle of groove (12) is formed in the side face of each bearing gland (11), and a protruding portion (13) matched with the groove (12) is arranged on the main eccentric fixing portion (6); the inner hole surface (14) of the bearing gland (11) is in sliding contact with the step surface (15) of the main eccentric fixing part (6), an oil groove (16) is formed in the inner hole surface (14) of the bearing gland, and the oil groove (16) is radially arranged in a semicircular shape along the inner hole surface (14) of the bearing gland for three circles; an upper pressure-bearing device (17) is arranged above the bearing (9), a cavity (19) is arranged between the upper pressure-bearing device (17) and the bearing (9), an oil cup (18) is arranged on the upper pressure-bearing device (17), an oil channel (20) communicated with the oil cup (18) is arranged in the upper pressure-bearing device (17), and the oil channel (20) is communicated with the cavity (19); the screening machine comprises a box body (29), the vibrating device is arranged on the box body (29), a supporting mechanism (30) is arranged at the bottom of the box body (29), the supporting mechanism (30) comprises an inner shaft (31), a spring device (32) and a supporting shaft sleeve (33), the upper end of the inner shaft (31) is connected with the bottom of the box body (29), the spring device (32) is arranged on the inner shaft (31), and the inner shaft (31) and the spring device (32) are inserted into the supporting shaft sleeve (33); a sand anti-blocking device (39) is arranged in the box body (29); stifled device (39) is prevented to grit is including preventing stifled rotary mechanism (40), preventing stifled drive mechanism (41) and preventing stifled power device (42), prevent stifled rotary mechanism (40) and be located box (29) bottom top, prevent stifled drive mechanism (41) and drive prevent stifled rotary mechanism (40) and connect, prevent stifled power device (42) with prevent stifled drive mechanism (41) and connect.

2. A sand blocking prevention screening device according to claim 1, characterised in that a coupling (21) is provided at one end of the main shaft (1).

3. A sand anti-blocking screening device according to claim 1, characterised in that a locking nut (22) is provided at one end of the main shaft (1).

4. The sand anti-blocking screening device according to claim 3, characterized in that a nut locking plate (23) is arranged at the locking nut (22).

5. A sand blocking prevention screening device according to claim 1 further comprising a first shroud (24), the main shaft (1), eccentric mechanism (4), bearing (9), bearing retainer ring (10), bearing gland (11) and upper bearing means (17) being located within the first shroud (24).

6. A sand anti-blocking screening device according to claim 1 further comprising a second shroud (25), the coupling (21) being located within the second shroud (25).

7. A sand blocking prevention screening device according to claim 1, characterized in that a lower pressure bearing device (26) is arranged below the bearing (9), both sides of the lower pressure bearing device (26) are respectively connected with the bearing gland (11) through screws (27), and a plastic gasket (28) is arranged between the lower pressure bearing device (26) and the bearing gland (11).

8. A sand blocking prevention screening device according to claim 1, characterised in that the blocking prevention rotating mechanism (40) is provided with comb teeth (43) arranged at intervals.

9. The sand blocking-preventing screening device according to claim 1, further comprising a damping device (34), wherein the damping device (34) comprises a damping box (35), four transverse spring damping pieces (36), four vertical spring damping pieces (37) and a middle connecting body (38), one ends of the four transverse spring damping pieces (36) are hinged to the inner wall of the damping box (35), the other ends of the four transverse spring damping pieces (36) are hinged to the middle connecting body (38), the upper end of each vertical spring damping piece (37) is hinged to the middle connecting body (38), and the lower end of each vertical spring damping piece (37) is connected to the bottom of the damping box (35).

Technical Field

The invention relates to the technical field of sandstone production, in particular to an anti-blocking sandstone screening device.

Background

Sand, which refers to a loose mixture of sand and gravel. Geology refers to mineral or rock particles with the particle size of 0.074-2 mm as sand, and refers to gravel or breccia with the particle size of more than 2 mm. The quality of the sandstone product must be qualified, and the sandstone product should be used after being tested, and the sandstone product must have factory quality certification and a test bill. Before use, sampling tests are carried out according to different varieties, specifications, production places and batches. The necessary items of the sand include sieve analysis, mud content and mud block content. The necessary items of the macadam include sieve analysis, mud content, mud block content, needle and flake particle content and crushing index. Corresponding project tests are also needed for the sandstone used for preparing concrete with special requirements. The current sandstone screening equipment has the problems of poor stability, large noise and the like. And the grit of waiting to sieve in the sieve machine is in the condition of piling up, only through the vibration of vibrating device drive box, not only screening efficiency is low, and blocks up the screen cloth easily.

Disclosure of Invention

The invention provides a sand blocking prevention screening device, and aims to solve the technical problems that existing sand screening equipment is low in screening efficiency and easy to block.

In view of the above problems of the prior art, according to one aspect of the present disclosure, the following technical solutions are adopted in the present invention:

a sand blocking prevention screening device comprises a vibration device arranged on a side plate of a screening machine, wherein the vibration device comprises a main shaft, an eccentric mechanism, a bearing retainer ring, a bearing gland, an upper pressure-bearing device and an oil cup; the two eccentric mechanisms are respectively fixedly connected with the spindle through a key, one part of the key is clamped in a key groove of the spindle, the other part of the key is clamped in a clamping groove of the eccentric mechanism, and the eccentric mechanism and the spindle synchronously rotate through the key; the eccentric mechanism comprises a main eccentric block and an auxiliary eccentric block, a main eccentric fixing part of the main eccentric block is positioned at one side of the eccentric mechanism, and an auxiliary eccentric fixing part of the auxiliary eccentric block is positioned at the other side of the eccentric mechanism which is centrosymmetric with the main eccentric block by using the axial center line of the main shaft; the main eccentric block is connected with the main eccentric fixing part through an adjusting bolt, the auxiliary eccentric block is connected with the auxiliary eccentric fixing part, and the main eccentric block and the auxiliary eccentric block can be adjusted to change an included angle between the main eccentric block and the auxiliary eccentric block; a bearing is arranged on the main shaft between the two eccentric mechanisms, and two bearing retainer rings positioned in the circumferential direction of the main shaft are respectively arranged at two ends of the lower part of the bearing; bearing glands are further arranged at two ends of the bearing, a circle of groove is formed in the side face of each bearing gland, and a protruding portion matched with the groove is arranged on the main eccentric fixing portion; the inner hole surface of the bearing gland is in sliding contact with the step surface of a main eccentric fixing part of the main eccentric fixing part, an oil groove is arranged at the inner hole surface of the bearing gland, and the oil groove is radially and semi-circularly arranged for three circles along the inner hole surface of the bearing gland; an upper pressure-bearing device is arranged above the bearing, a cavity is arranged between the upper pressure-bearing device and the bearing, an oil cup is arranged on the upper pressure-bearing device, an oil channel communicated with the oil cup is arranged in the upper pressure-bearing device, and the oil channel is communicated with the cavity; the screening machine comprises a box body, the vibrating device is arranged on the box body, a supporting mechanism is arranged at the bottom of the box body, the supporting mechanism comprises an inner shaft, a spring device and a supporting shaft sleeve, the upper end of the inner shaft is connected with the bottom of the box body, the spring device is arranged on the inner shaft, and the inner shaft and the spring device are inserted into the supporting shaft sleeve; a sand and stone anti-blocking device is arranged in the box body; the gravel anti-blocking device comprises an anti-blocking rotating mechanism, an anti-blocking transmission mechanism and an anti-blocking power device, wherein the anti-blocking rotating mechanism is located above the bottom of the box body, the anti-blocking transmission mechanism drives the anti-blocking rotating mechanism to be connected, and the anti-blocking power device is connected with the anti-blocking transmission mechanism.

In order to better realize the invention, the further technical scheme is as follows:

according to one embodiment of the invention, a coupling is arranged at one end of the main shaft.

According to another embodiment of the invention, a locking nut is provided at one end of the spindle.

According to another embodiment of the invention, a nut locking tab is provided at the locking nut.

According to another embodiment of the present invention, the device further comprises a first protective cover, and the main shaft, the eccentric mechanism, the bearing retainer ring, the bearing gland and the upper bearing device are all positioned in the first protective cover.

According to another embodiment of the present invention, further comprising a second shield, the coupling being located within the second shield.

According to another embodiment of the invention, a lower pressure-bearing device is arranged below the bearing, two sides of the lower pressure-bearing device are respectively connected with a bearing gland through screws, and a plastic gasket is arranged between the lower pressure-bearing device and the bearing gland.

According to another embodiment of the invention, the anti-blocking rotating mechanism is provided with comb teeth which are arranged at intervals.

According to another embodiment of the invention, the damping device comprises a damping box, four transverse spring damping pieces, four vertical spring damping pieces and a middle connecting body, wherein one ends of the four transverse spring damping pieces are respectively hinged with the inner wall of the damping box, the other ends of the four transverse spring damping pieces are respectively hinged with the middle connecting body, the upper end of each vertical spring damping piece is hinged with the middle connecting body, and the lower end of each vertical spring damping piece is connected with the bottom of the damping box.

Compared with the prior art, the invention has the following beneficial effects:

the sand blocking prevention screening device can be used for grading of building fabrics such as mines, chemical engineering and coal, and grading of broken stones, quarrying stones, sand stones and the like, and is used for classifying, screening and the like of sand stones, and has reliable performance, low noise and convenient maintenance; and can promote accumulational grit through the grit prevents stifled device, make full use of screen cloth prevents to block up, has improved screening efficiency.

Drawings

For a clearer explanation of the embodiments or technical solutions in the prior art of the present application, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only references to some embodiments in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a vibration device according to an embodiment of the present invention.

Figure 2 is a schematic diagram of a screen box structure according to one embodiment of the present invention.

Fig. 3 is a schematic structural view of a shock-absorbing device according to an embodiment of the present invention.

Wherein, the names corresponding to the reference numbers in the drawings are:

1-main shaft, 2-main eccentric mass, 3-key, 4-eccentric mechanism, 5-auxiliary eccentric mass, 6-main eccentric fixing portion, 7-auxiliary eccentric fixing portion, 8-adjusting bolt, 9-bearing, 10-retainer ring, 11-bearing gland, 12-groove, 13-boss, 14-bearing gland inner bore face, 15-main eccentric fixing portion step face, 16-oil groove, 17-upper bearing device, 18-oil cup, 19-cavity, 20-oil passage, 21-coupler, 22-lock nut, 23-nut locking plate, 24-first shield, 25-second shield, 26-lower bearing device, 27-screw, 28-plastic washer, 29-box body, 30-supporting mechanism, 31-inner shaft, 32-spring device, 33-supporting shaft sleeve, 34-damping device, 35-damping box, 36-transverse spring damping piece, 37-vertical spring damping piece, 38-intermediate connecting body, 39-sand block-proof device, 40-block-proof rotating mechanism, 41-block-proof transmission mechanism, 42-block-proof power device and 43-comb teeth.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1 and 2, the sand anti-blocking screening device comprises a vibration device arranged on a side plate of a screening machine, wherein the vibration device comprises a main shaft 1, an eccentric mechanism 4, a bearing 9, a bearing retainer ring 10, a bearing gland 11, an upper pressure-bearing device 17 and an oil cup 18; the number of the eccentric mechanisms 4 is two, the two eccentric mechanisms 4 are respectively fixedly connected with the spindle 1 through a key 3, one part of the key 3 is clamped in a key groove of the spindle 1, the other part of the key 3 is clamped in a clamping groove of the eccentric mechanism 4, and the eccentric mechanisms 4 and the spindle 1 synchronously rotate through the key 3; the eccentric mechanism 4 comprises a main eccentric block 2 and an auxiliary eccentric block 5, a main eccentric fixing part 6 of the main eccentric block 2 is positioned on one side of the eccentric mechanism 4, and an auxiliary eccentric fixing part 7 of the auxiliary eccentric block 5 is positioned on the other side of the eccentric mechanism 4 which is centrosymmetric with the main eccentric block 2 by using the axial center line of the main shaft 1; the main eccentric block 2 is connected with the main eccentric fixing part 6 through an adjusting bolt 8, the auxiliary eccentric block 5 is connected with the auxiliary eccentric fixing part 7, the main eccentric block 2 and the auxiliary eccentric block 5 can be adjusted to change an included angle between the main eccentric block 2 and the auxiliary eccentric block 5, and an exciting force is changed by adjusting the included angle of the main eccentric block and the auxiliary eccentric block to achieve the purpose of adjusting the amplitude; a bearing 9 is arranged on the main shaft 1 between the two eccentric mechanisms 4, and two end of the lower part of the bearing 9 are respectively provided with a bearing retainer ring 10 positioned on the circumferential direction of the main shaft 1; bearing glands 11 are further arranged at two ends of the bearing 9, a circle of grooves 12 are formed in the side faces of the bearing glands 11, and a protruding portion 13 matched with the grooves 12 is arranged on the main eccentric fixing portion 6; the bearing gland inner hole surface 14 of the bearing gland 11 is in sliding contact with a main eccentric fixing part step surface 15 of the main eccentric fixing part 6, an oil groove 16 is arranged at the position of the bearing gland inner hole surface 14, and the oil groove 16 is radially and semi-circularly arranged for three circles along the bearing gland inner hole surface 14; an upper pressure-bearing device 17 is arranged above the bearing 9, a cavity 19 is arranged between the upper pressure-bearing device 17 and the bearing 9, an oil cup 18 is arranged on the upper pressure-bearing device 17, an oil channel 20 communicated with the oil cup 18 is arranged in the upper pressure-bearing device 17, and the oil channel 20 is communicated with the cavity 19; the screening machine comprises a box body 29, the vibrating device is arranged on the box body 29, a supporting mechanism 30 is arranged at the bottom of the box body 29, the supporting mechanism 30 comprises an inner shaft 31, a spring device 32 and a supporting shaft sleeve 33, the upper end of the inner shaft 31 is connected with the bottom of the box body 29, the spring device 32 is arranged on the inner shaft 31, and the inner shaft 31 and the spring device 32 are inserted into the supporting shaft sleeve 33; a sand blocking prevention device 39 is arranged in the box body 29; stifled device 39 is prevented to grit includes prevents stifled rotary mechanism 40, prevents stifled drive mechanism 41 and prevents stifled power device 42, prevent stifled rotary mechanism 40 and be located box 29 bottom top, prevent stifled drive mechanism 41 and drive prevent stifled rotary mechanism 40 and connect, prevent stifled power device 42 with prevent stifled drive mechanism 41 and connect. The anti-blocking rotating mechanism 40 is provided with comb teeth 43 which are arranged at intervals. The grit of waiting to sieve in the screen (ing) machine is in the condition of piling up, only through the vibration of vibrating device drive box 29, not only screening efficiency is low, and blocks up the screen cloth easily. If the sand blocking prevention device 39 can push accumulated sand, the screen is fully utilized, blocking is prevented, and the screening efficiency is improved.

And one end of the main shaft 1 is provided with a coupler 21.

One end of the main shaft 1 is provided with a locking nut 22.

And a nut locking sheet 23 is arranged at the locking nut 22.

The eccentric mechanism further comprises a first protective cover 24, and the main shaft 1, the eccentric mechanism 4, the bearing 9, the bearing retainer ring 10, the bearing gland 11 and the upper pressure-bearing device 17 are all located in the first protective cover 24.

A second shield 25 is also included, the coupling 21 being located within the second shield 25.

A lower pressure-bearing device 26 is arranged below the bearing 9, two sides of the lower pressure-bearing device 26 are respectively connected with the bearing gland 11 through screws 27, and a plastic gasket 28 is arranged between the lower pressure-bearing device 26 and the bearing gland 11.

As shown in fig. 3, the shock absorbing device 34 further includes a shock absorbing box 35, four lateral spring shock absorbing members 36, four vertical spring shock absorbing members 37 and a middle connecting body 38, where four lateral spring shock absorbing members 36 are provided, one end of each of the four lateral spring shock absorbing members 36 is hinged to the inner wall of the shock absorbing box 35, the other end of each of the four lateral spring shock absorbing members 36 is hinged to the middle connecting body 38, the upper end of each of the vertical spring shock absorbing members 37 is hinged to the middle connecting body 38, and the lower end of each of the vertical spring shock absorbing members 37 is connected to the bottom of the shock absorbing box 35. The noise is reduced by the damping device 34.

In summary, the vibration exciter is used for forcing and continuously moving the screen box, materials are continuously thrown on the screen surface along with the screen box, and are continuously turned and loosened, the fine particle grade has the opportunity to move towards the lower part of the material layer and is discharged through the screen holes, and the materials clamped in the screen holes can jump out, so that the screen holes are prevented from being blocked; the invention can be used for grading the building fabrics of mines, chemical industry, coal and the like, and grading crushed stone, quarrying, sandstone and the like, and can be used for classifying and screening sandstone and the like, and has the advantages of reliable performance, low noise, convenient maintenance, reasonable technical parameters, large production capacity and the like. And the accumulated sand is pushed by the sand blocking prevention device, the screen is fully utilized, the blockage is prevented, and the screening efficiency is improved.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure and claims of this application. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.