CN216093870U - Double-roller sand making machine with anti-blocking screen - Google Patents

Abstract

The utility model relates to a double-roller sand making machine with an anti-blocking screen, which comprises a rolling gap between two crushing cylinders, a dredging mechanism, a screen for catching sand falling from the rolling gap and a screen translation mechanism, wherein the dredging mechanism comprises a dredging shaft, a dredging motor and two racks fixed together with the screen, the dredging shaft is meshed on the two racks through two walking gears, a plurality of top rows uniformly distributed along the circumferential direction of the dredging shaft are arranged on the dredging shaft, the tops in the same top row are distributed along the axial direction of the dredging shaft, the tops in adjacent top rows are aligned along the circumferential direction of the dredging, the screen holes are distributed in a rectangular array, and the screen holes in the same row of screen holes are positioned on the same plane vertical to the dredging shaft in a one-to-one correspondence manner. The double-roller sand making machine has the advantage of no need of stopping the machine for dredging the screen, and solves the problem that the existing double-roller sand making machine needs to stop the machine for dredging the screen when the screen directly receives the sand.

Description

Double-roller sand making machine with anti-blocking screen

Technical Field

The utility model relates to a sand making machine, in particular to a double-roller sand making machine with a protective blocking screen.

Background

A sand maker is a mechanical device used to break stone into sand. The structure of the sand making machine has two types, one is a hammer crusher, the other is a double-roller machine (hereinafter referred to as a double-roller sand making machine), the hammer crusher has many wearing parts, large energy consumption, much dust and uneven fineness. The roller pair sand making machine can avoid the defects of much dust and uneven fineness. The patent document with Chinese patent No. 2010202399225, publication No. CN201791554U, entitled "drive mechanism of double-roller sand making machine" discloses a double-roller sand making machine, the crushing of stone into sand by the double-roller sand making machine is realized by rolling a pair of crushing cylinders (also called rollers), the crushing cylinder of the initial double-roller sand making machine is realized by arranging a chain wheel at one end of the crushing cylinder, then reducing the speed of the output of a motor by a speed reducer and then driving the chain wheel by a chain, therefore, the defects of poor efficiency, large abrasion, small bearing capacity, small impact resistance, large vibration and appearance volume and short continuous operation life exist; the present applicant has devised for this purpose an internally driven pair roller sand mill as disclosed in patent application No. 2016101635735. The prior double-roller sand making machine has the following defects: providing a separation interval for the crushing cylinder (i.e. widening of the crushing interval) for compression of the air chamber when stuck by stones, can result in the sand being over-sized; the sand that can not make carries out the thickness separation, for this reason technical personnel in the field set up the sieve on the system sand machine and sieve, in order to improve compact structure nature, the sieve is for directly catching the grit that smashes the clearance and drop, the impact force that the grit dropped down when system sand machine system sand is great, lead to the sieve mesh to block up easily, need shut down the manual work after current sand blocks up and dredge to influence system sand efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pair-roller sand making machine with a defense and blocking screen, which does not need to be stopped for dredging the screen, and solves the problem that the existing pair-roller sand making machine needs to be stopped for dredging the screen when the screen directly catches the sand.

The technical problem is solved by the following technical scheme: the double-roller sand making machine is characterized by further comprising a dredging mechanism, a screen and a screen translation mechanism, wherein the dredging mechanism is positioned below the two crushing cylinders, the screen is used for catching sand falling from the grinding gap, the screen translation mechanism is used for driving the screen to reset and translate along the distribution directions of the two crushing cylinders, one end of the screen along the axial direction of a main shaft is high, the other end of the screen is low, the lower end of the screen is butted with the feeding end of a blanking groove, a fine material collecting tank is arranged below the screen and is used for catching sand falling from the screen, the screen comprises a bottom plate and side plates arranged on two sides of the bottom plate along the crushing and distributing directions, a plurality of screen holes are formed in the bottom plate, the dredging mechanism comprises a dredging shaft positioned below the bottom plate, a dredging motor used for driving the dredging shaft to rotate and two racks fixed together with the screen, the two ends of the dredging shaft are respectively provided with a walking gear, the two walking gears are meshed on the two racks in a one-to-one correspondence manner and are positioned above the racks, the dredging shaft is provided with a plurality of top rows which are uniformly distributed along the circumferential direction of the dredging shaft, the tops in the same top row are distributed along the axial direction of the dredging shaft, the tops in adjacent top rows are aligned along the circumferential direction of dredging, the sieve pores are distributed in a rectangular array manner, and the tops in the same top row are positioned on the same plane vertical to the dredging shaft in a one-to-one correspondence manner; when the dredging shaft rotates 360 degrees/N from the position where the sieve pores in the same row of sieve pores of the tops in one row of the tops are aligned one by one, the tops in the next row of the tops are aligned one by one with the sieve pores in the next row of sieve pores. The sand flowing out of the crushing gap directly falls on the screen for coarse and fine separation. During the use, the dredge roller reciprocates under the drive of mediation motor, rotates the in-process ejector pin and carries out row-by-row top dredging to so sieve mesh. Therefore, the dredging of the sieve pores without stopping the machine is realized.

Preferably, the lower end of each sieve pore is provided with a pit, and the opening area of each sieve pore is gradually increased from bottom to top. The size of the ejector rod can be equal to the aperture of the part of the sieve pore for controlling the granularity of the sand, and the sieve can be dredged when the thickness of the sieve is thick.

Preferably, a guide sliding groove extending along the extending direction of the rack is formed in the side face, adjacent to the side face, provided with the teeth, of the rack, and a guide sliding block penetrating in the limit sliding groove is arranged on the shell of the dredging motor. The stability of the dredging shaft in the process of rolling back and forth can be improved.

Preferably, the screen translation mechanism is a cylinder.

The sieve support device also comprises two guide support chutes extending along the horizontal moving direction of the sieve, wherein one guide support chute is positioned below the high end of the sieve, the other guide support chute is positioned at the low end of the sieve, two rows of sieve support feet which are arranged in the two guide support chutes in a one-to-one correspondence manner are arranged on the sieve, sieve part support rolling balls supported on the bottom wall of the guide support chutes are arranged on the lower end surface of each sieve support foot, bearings are sleeved on the sieve support feet, and the peripheral surface of each sieve support foot is abutted with the side walls of the guide support chutes through the bearings. The smoothness and the prolonged service life of the screen during translation can be improved.

Compared with the prior art have influence beneficial effect: the manufactured sand can be subjected to coarse and fine separation; can dredge the sieve pores, and does not need to stop sand making during dredging.

Drawings

FIG. 1 is a schematic right side view of the screen and screen unclogging mechanism of FIG. 3;

FIG. 2 is a schematic cross-sectional view B-B of FIG. 1;

FIG. 3 is a schematic right-view illustration of an embodiment of the present invention;

FIG. 4 is a schematic front view of the present invention without the sand making components shown;

fig. 5 is a partially enlarged schematic view of fig. 4 at F.

In the figure: the device comprises a rack 1, a crushing barrel 2, a rolling gap 4, a bottom plate 19, a blanking groove 20, a fine material collecting tank 21, a guide supporting chute 39, a sieve supporting foot 40, a sieve supporting rolling ball 41, a bearing 42, a dredging shaft 43, a dredging motor 44, a rack 45, a walking gear 46, a top 47, a sieve hole 48, a pit 49, a guide chute 50, a guide sliding block 51, a side plate 64 and a sieve translation mechanism 65.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the double-roller sand making machine with the anti-blocking screen comprises a frame, wherein the frame is provided with two crushing cylinders 2 and a driving structure for driving the crushing cylinders to rotate, a rolling gap 4 is formed between the two crushing cylinders, the double-roller sand making machine further comprises a screen below the two crushing cylinders for receiving sand falling from the rolling gap, a screen translation mechanism 65 for driving the screen to reset and translate along the distribution direction of the two crushing cylinders, and a screen hole dredging mechanism positioned below the screen. The screen comprises a bottom plate 19 and side plates 63 arranged on both sides of the bottom plate in the same crushing and distribution direction. The bottom plate is provided with a plurality of sieve holes 48. The sieve is higher along the axial one end of the crushing cylinder and lower the other end, the lower end of the sieve is butted with the feed end of the blanking groove 20, and a fine material collecting tank 21 for catching sand falling through the sieve pores of the sieve is arranged below the sieve. The screen translation mechanism is a cylinder.

The utility model is also provided with two guide support chutes 39 extending along the screen translation direction, one guide support chute is fixed with the frame, and the other guide support chute is fixed on the fine material collecting tank. The guide supporting chute fixed on the frame is positioned below the lower end of the sieve, and the guide supporting chute fixed on the fine material collecting tank is positioned below the high end of the sieve. Two rows of sieve supporting feet 40 which are arranged in the guide supporting chutes in a penetrating mode in a one-to-one correspondence mode are arranged on the sieve, sieve part supporting rolling balls 41 which are supported on the bottom wall of the guide supporting chutes are arranged on the lower end face of each sieve supporting foot, bearings 42 are sleeved on the sieve supporting feet, and the peripheral face of each sieve supporting foot is abutted to the side wall of each guide supporting chute through the bearings.

The sieve pore dredging mechanism comprises a dredging shaft 43 positioned below the sieve, a dredging motor 44 for driving the dredging shaft to rotate and two racks 45 fixed together with the sieve, two ends of the dredging shaft are respectively provided with a walking gear 46, the two walking gears are meshed on the two racks in a one-to-one correspondence manner, the dredging shaft is provided with a plurality of top rows uniformly distributed along the circumferential direction of the dredging shaft, the tops 47 in the top rows in the same row are distributed along the axial direction of the dredging shaft, the tops in adjacent top rows are aligned along the circumferential direction of the dredging, the sieve pores of the sieve are distributed in a rectangular array manner, and the tops in the top rows in the same row are positioned on the same plane vertical to the dredging shaft in a one-to-one correspondence manner; when the dredging shaft rotates 360 degrees/N from the position where the sieve pores in the same row of sieve pores of the tops in one row of the top rows are aligned one by one, the tops in the next row of the top rows are aligned one by one with the sieve pores in the next row of sieve pores, and N is the row number of the top rows. When the tips are aligned with the holes in the same row of holes in the tip row one to one, the upper ends of the tips extend upward beyond the holes 48. The lower end of the sieve mesh is provided with a pit 49, and the opening area of the sieve mesh is gradually increased from bottom to top. And a guide sliding groove 50 extending along the extension direction of the rack is arranged on the side surface adjacent to the side surface of the rack provided with the teeth, and a guide sliding block 51 arranged in the limit sliding groove in a penetrating manner is arranged on the shell of the dredging motor.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The double-roller sand making machine is characterized by further comprising a dredging mechanism, a screen and a screen translation mechanism, wherein the dredging mechanism is positioned below the two crushing cylinders, the screen is used for catching sand falling from the grinding gap, the screen translation mechanism is used for driving the screen to reset and translate along the distribution directions of the two crushing cylinders, one end of the screen along the axial direction of a main shaft is high, the other end of the screen is low, the lower end of the screen is butted with the feeding end of a blanking groove, a fine material collecting tank is arranged below the screen and is used for catching sand falling from the screen, the screen comprises a bottom plate and side plates arranged on two sides of the bottom plate along the crushing and distributing directions, a plurality of screen holes are formed in the bottom plate, the dredging mechanism comprises a dredging shaft positioned below the bottom plate, a dredging motor used for driving the dredging shaft to rotate and two racks fixed together with the screen, the two ends of the dredging shaft are respectively provided with a walking gear, the two walking gears are meshed on the two racks in a one-to-one correspondence manner and are positioned above the racks, the dredging shaft is provided with a plurality of top rows which are uniformly distributed along the circumferential direction of the dredging shaft, the tops in the same top row are distributed along the axial direction of the dredging shaft, the tops in adjacent top rows are aligned along the circumferential direction of dredging, the sieve pores are distributed in a rectangular array manner, and the tops in the same top row are positioned on the same plane vertical to the dredging shaft in a one-to-one correspondence manner; when the dredging shaft rotates 360 degrees/N from the position where the sieve pores in the same row of sieve pores of the tops in one row of the tops are aligned one by one, the tops in the next row of the tops are aligned one by one with the sieve pores in the next row of sieve pores.

2. The pair-roller sand making machine provided with the anti-blocking screen is characterized in that the lower ends of the screen holes are provided with concave pits, and the opening areas of the screen holes are gradually increased from bottom to top.

3. The double-roller sand making machine provided with the anti-blocking screen is characterized in that a guide sliding groove extending along the extending direction of the rack is arranged on the side surface adjacent to the side surface provided with the teeth of the rack, and a guide sliding block penetrating in the limit sliding groove is arranged on the shell of the dredging motor.

4. A pair of roller sand making machine with a set of anti-blocking screens as claimed in claim 1 or 2, wherein the screen translation mechanism is a cylinder.

5. The double-roller sand making machine provided with the anti-blocking screen is characterized by further comprising two guide supporting chutes extending along the translation direction of the screen, wherein one guide supporting chute is positioned below the high end of the screen, the other guide supporting chute is positioned at the lower end of the screen, two rows of screen supporting legs penetrating through the two guide supporting chutes in a one-to-one correspondence manner are arranged on the screen, screen part supporting rolling balls supported on the bottom wall of the guide supporting chutes are arranged on the lower end face of each screen supporting leg, bearings are sleeved on the screen supporting legs, and the peripheral surfaces of the screen supporting legs are abutted to the side walls of the guide supporting chutes through the bearings.

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