CN115415018A

CN115415018A - Filtering type ball mill for cement production

Info

Publication number: CN115415018A
Application number: CN202211156032.1A
Authority: CN
Inventors: 唐伍平
Original assignee: Individual
Current assignee: Wuhai Xishui Cement Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2022-12-02
Anticipated expiration: 2042-09-22
Also published as: CN115415018B

Abstract

The invention discloses a filtering type ball mill for cement production, which belongs to the field of cement production equipment, and is characterized in that a dust-blocking sleeve and a feeding plate are additionally arranged on the basis of the existing ball mill feeder to block woven fabrics mixed in cement, so that the occurrence probability of a car-closing phenomenon is effectively reduced, the continuous conveying of clinker can be timely blocked after the car-closing phenomenon occurs, the car-closing phenomenon is effectively relieved, the direct connection of the dust-blocking sleeve and a material guide pipe can play an effective dustproof role, the driven roller is rotated by utilizing the relative rotation effect of a rotating feeder and a static material guide pipe, the rotation of the driven roller is monitored by utilizing a movement sensor, the driven roller which is stopped after the car-closing phenomenon occurs triggers the movement sensor, the movement sensor further controls the material-blocking plate on the feeding plate to be closed, and meanwhile, hooks on the material-blocking plate can hook the woven fabrics mixed in the clinker when the clinker is fed, so that the woven fabrics are effectively prevented from causing the car-closing of a ball mill body.

Description

Filter type ball mill for cement production

Technical Field

The invention relates to the field of cement production equipment, in particular to a filter type ball mill for cement production.

Background

Cement is a binder used to build a set of substances, harden and adhere to other materials, binding them together. Cement alone is rarely used, but rather sand and gravel (aggregate) are bonded together. Cement mixed with fine aggregate produces mortar for masonry or mixed with sand and gravel to produce concrete. Concrete is currently the most widely used material, second only to water, and the most resource consumed on earth.

Cement grinding is the final step in cement manufacture and also the step with the most power consumption. The main function of the cement mortar is to grind cement clinker (retarder, performance regulating material and the like) to proper granularity (expressed by fineness, specific surface area and the like) to form a certain grain composition, increase the hydration area, accelerate the hydration rate and meet the requirements of cement mortar on setting and hardening.

The common equipment used for grinding is a ball mill which consists of a horizontal cylinder, a feeding and discharging hollow shaft, a grinding head and the like, wherein the cylinder is a long cylinder, and a grinding body is arranged in the cylinder. Because the cylinder is horizontally arranged, feeding and discharging need to pass through two ends, the feeding port of the existing ball mill is a simple cylinder, a large amount of dust is easy to overflow during feeding, continuous feeding of clinker cannot be blocked in time after the ball mill has a vehicle-stopping fault, most of the feeding ports do not have a filtering function, and braided fabrics mixed in the clinker are easy to wind the internal parts of the cylinder to cause the vehicle-stopping phenomenon.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to solve the problems in the prior art, and aims to provide a filter type ball mill for cement production.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a filtration formula ball mill for cement manufacture, including the ball mill body, the feeder is installed to the one end of ball mill body, and inserted the passage in the feeder, the inner wall fixedly connected with dust blocking sleeve that the feeder is close to import department, and the middle part fixedly connected with feed plate of dust blocking sleeve, the lateral wall fixedly connected with annular plug connector that the dust blocking sleeve is close to the import department of feeder, and the middle part lateral wall of annular plug connector sets up the annular slot that matches with the passage, the lateral wall of annular slot is connected with a plurality of equidistant distribution's mounting bracket, and all rotate on every mounting bracket and be connected with the driven voller, install the removal inductor to the driven voller setting on the mounting bracket, and the last electric connection of removal inductor has the control treater, the middle part of feed plate is rotated and is connected with a plurality of flitchs, and the couple of equal fixedly connected with a plurality of equidistant distribution on every flitch, the installation cavity has been seted up to the inner wall that the feed plate is located the flitch top, and install a plurality of servo motor who is connected with the control treater electricity in the installation cavity, every servo motor's output shaft all is connected with a flitch.

Furthermore, the driven roller comprises a roller body, the upper end and the lower end of the roller body are both connected with rotating shafts which are rotatably connected with the mounting frame, the material guide pipe extends into the feeder and then abuts against the roller body along the edge opening of the material guide pipe, and when the feeder rotates, the material guide pipe is fixed, so that the roller body rotates and rotates along the edge opening of the material guide pipe, and the phenomenon of blank car does not occur in the working process of the ball mill body when the moving sensor detects that the moving sensor normally rotates.

Further, the lateral wall fixedly connected with of roll body has a plurality of equidistant distribution's flange, and the flange is just to removing the inductor setting, and the flange is mainly in order to increase the protrusion, and the inductor is removed in the process of a plurality of flange intervals to be convenient for remove the inductor monitoring roll body and rotate, so that the surface of roll body is too smooth and lead to removing the insensitive of inductor monitoring.

Furthermore, the shape of the roller body is gradually concave inwards from two sides to the middle, and the two sides of the roller body are both provided with magnetism, so that noise caused by the fact that the convex plate touches the edge opening of the material guide pipe is avoided.

Further, fixedly connected has the elastic cushion between the lateral wall of mounting bracket and annular slot, and the elastic cushion is made by netted elastic material, and the elasticity of elastic cushion makes the border mouth of driven voller and passage contact all the time, avoids appearing conflicting bad condition and causes the driven voller to stop the rotation, has also avoided the condition of spurious triggering removal inductor.

Further, the upper and lower both sides lateral wall of annular slot all sets up the recess that the multiunit equidistant distributed, and sliding connection has the magnetic restriction piece in the recess, and the restriction piece is located the outside lateral wall activity of recess and inlays and have the ball, and back in inserting annular slot when the passage, the inside and outside both sides of guide pipe wall are cliied to two relative restriction pieces, effectively avoid the feeder to rotate the in-process and collide with the passage and produce the noise.

Furthermore, the inner wall of the groove is fixedly connected with a limiting slide rod, the limiting slide rod penetrates through the inside of the limiting block and is in sliding connection with the limiting block, the limiting slide rod limits the limiting block to slide along the groove, and the limiting block is prevented from sliding out of the groove.

Furthermore, the dust blocking sleeve is conical, the caliber of the dust blocking sleeve is gradually reduced from the outside to the inside of the feeder, and the feeding guide pipe is directly connected with the dust blocking sleeve in a seamless mode, so that a large amount of dust can be prevented from overflowing, and an effective dustproof effect is achieved.

Furthermore, the turned angle scope of material blocking plate is 0-90, when the material blocking plate rotates 0, the feed plate is in the closed condition, when the material blocking plate rotates 90, the feed plate is in the state of opening, the grog sees through inside the gap entering ball mill body between a plurality of material blocking plates, and the equal fixedly connected with silica gel strip of both sides lateral wall of material blocking plate, the leakproofness of silica gel strip is good, can eliminate the gap between two adjacent material blocking plates, play effectual dust prevention excessive effect when the feed plate is in the closed condition.

Furthermore, the externally mounted of feeder has the siren, and the siren is connected with the control processor electricity, and when vexed vehicle-hour appearing, the removal inductor sends the signal to the control processor, and the control processor and then starts the siren and send the chimes of doom, reminds the staff in time to take measures, effectively avoids the further damage of part.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) The scheme is that the dust blocking sleeve and the feeding plate are additionally arranged on the basis of the existing ball mill feeder to block braided fabrics mixed in cement, so that the occurrence probability of a stuffy car phenomenon is effectively reduced, the continuous conveying of the clinker can be timely blocked after the stuffy car phenomenon occurs, the stuffy car phenomenon is effectively slowed down, the ball mill component is protected, the dust blocking sleeve is directly connected with the material guide pipe to play an effective dustproof role, the driven roller rotates under the action of relative rotation of the rotating feeder and the static material guide pipe, the rotation of the driven roller is monitored by the aid of the mobile sensor, the driven roller stopped after the stuffy car phenomenon occurs triggers the mobile sensor, the mobile sensor further controls the blocking plate on the feeding plate to be closed, the clinker is prevented from being continuously fed, meanwhile, hooks on the blocking plate can hook the braided fabrics mixed in the clinker when the clinker is fed, and the braided fabrics are effectively prevented from causing the stuffy car of the ball mill body.

(2) The driven roller includes the roll body, and the upper and lower both ends of roll body all are connected with the pivot of being connected with the mounting bracket rotation, and its border mouth offsets with the roll body after the passage extends into the feeder, because the passage is fixed when the feeder rotates, so the roll body rotates and the rotation along the border mouth of passage to let the removal inductor detect when it belongs to normal rotation, indicate indirectly that the stifle phenomenon does not appear in the course of the work of ball mill body.

(3) The lateral wall fixedly connected with of roll body has a plurality of equidistant protruding boards that distribute, and the protruding board is just to removing the inductor setting, and the protruding board is mainly in order to increase the protrusion, and the inductor is removed in the process of a plurality of protruding board intervals to be convenient for remove the inductor and monitor the roll body and rotate, so that the surface of roll body too smooth and lead to removing the insensitive of inductor monitoring.

(4) The shape of the roller body is gradually concave from two sides to the middle, and the two sides of the roller body are both magnetic, so that noise is prevented from being generated when the convex plate touches the edge opening of the material guide pipe.

(5) The elastic cushion layer is fixedly connected between the side walls of the mounting frame and the annular slot, the elastic cushion layer is made of a net elastic material, the elastic force of the elastic cushion layer enables the driven roller to be in contact with the edge opening of the material guide pipe all the time, the phenomenon that the driven roller stops rotating due to poor conflict is avoided, and the phenomenon that the moving sensor is triggered by mistake is also avoided.

(6) The upper and lower both sides lateral wall of annular slot all is seted up flutedly, and sliding connection has the magnetic restriction piece in the recess, and the restriction piece is located the outside lateral wall activity of recess and inlays and have the ball, and back in the passage inserts annular slot, two relative restriction pieces are cliied the inside and outside both sides of guide pipe wall, effectively avoid the feeder to rotate the in-process and collide with the passage and produce the noise.

(7) The inner wall fixedly connected with limit slide bar of recess, and limit slide bar runs through to inside and rather than sliding connection of restriction piece, and limit slide bar has restricted that the restriction piece can only slide along the recess, avoids restriction piece roll-off outside the recess.

(8) The dust blocking sleeve is conical, the caliber of the dust blocking sleeve is gradually reduced from the outside to the inside of the feeder, and the feeding guide pipe for feeding is directly connected with the dust blocking sleeve in a seamless mode, so that a large amount of dust can be prevented from overflowing, and an effective dustproof effect is achieved.

(9) The turned angle scope of the material blocking plate is 0-90 degrees, when the material blocking plate is turned by 0 degrees, the feeding plate is in a closed state, when the material blocking plate is turned by 90 degrees, the feeding plate is in an open state, clinker enters the inside of the ball mill body through gaps between the material blocking plates, the side walls of two sides of the material blocking plate are fixedly connected with silica gel strips, the sealing performance of the silica gel strips is good, the gaps between two adjacent material blocking plates can be eliminated, and the feeding plate plays an effective dust-proof overflowing role when being in the closed state.

(10) The outside of feeder is installed the siren, and the siren is connected with the control processor electricity, and when the vexed vehicle-hour appears, removes the inductor and sends the signal to the control processor, and the control processor then starts the siren and sends the chimes of doom, reminds the staff in time to take measures, effectively avoids the further damage of part.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic cross-sectional view of the feeder of the present invention;

FIG. 4 is a schematic structural diagram of the present invention in an operating state;

FIG. 5 is a schematic perspective view of a driven roller according to the present invention;

FIG. 6 is a comparative schematic of the blocker plate of the present invention in the closed and open states;

FIG. 7 is a front view of the annular connector of the present invention;

fig. 8 is a control schematic of the present invention.

The reference numbers in the figures illustrate that:

1, a ball mill body, 2 feeders, 3 dust blocking sleeves, 4 feeding plates, 401 installation cavities, 402 servo motors, 5 annular plug connectors, 501 annular slots, 502 grooves, 6 installation frames, 7 driven rollers, 701 roller bodies, 702 rotating shafts, 703 convex plates, 8 moving sensors, 9 elastic cushion layers, 10 limiting blocks, 1001 limiting slide rods, 11 material blocking plates and 1101 hooks.

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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment is as follows:

a filter type ball mill for cement production comprises a ball mill body 1, please refer to fig. 1, 2 and 3, wherein one end of the ball mill body 1 is provided with a feeder 2, a material guide pipe is inserted into the feeder 2, the inner wall of the feeder 2 close to an inlet is fixedly connected with a dust blocking sleeve 3, the dust blocking sleeve 3 is in a conical shape, the caliber of the dust blocking sleeve 3 is gradually reduced from the outside to the inside of the feeder 2, the material guide pipe for feeding is directly and seamlessly connected with the dust blocking sleeve 3, a large amount of dust can be prevented from overflowing, and therefore an effective dustproof effect is achieved, and the middle part of the dust blocking sleeve 3 is fixedly connected with a material feeding plate 4;

referring to fig. 4 and 7, an annular plug connector 5 is fixedly connected to a side wall of the dust-blocking sleeve 3 close to an inlet of the feeder 2, an annular slot 501 matched with the material guiding pipe is formed in a side wall of the middle of the annular plug connector 5, a plurality of groups of grooves 502 distributed at equal intervals are formed in upper and lower side walls of the annular slot 501, a magnetic limiting block 10 is slidably connected in the groove 502, balls are movably embedded in a side wall of the limiting block 10 located outside the groove 502, after the material guiding pipe is inserted into the annular slot 501, the inner side and the outer side of the material guiding pipe wall are clamped by the two opposite limiting blocks 10, noise caused by collision with the material guiding pipe in the rotation process of the feeder 2 is effectively avoided, a limiting slide rod 1001 is fixedly connected to an inner wall of the groove 502, the limiting slide rod 1001 penetrates through the limiting block 10 and is slidably connected with the limiting block 10, the limiting slide rod 1001 limits the limiting block 10 to slide along the groove 502, and prevents the limiting block 10 from sliding out of the groove 502;

referring to fig. 3, the side wall of the annular slot 501 is connected with a plurality of mounting frames 6 which are distributed at equal intervals, an elastic cushion 9 is fixedly connected between the mounting frames 6 and the side wall of the annular slot 501, and the elastic cushion 9 is made of a net-shaped elastic material (preferably, an elastic polyurethane material, or other materials according to actual requirements), so that the driven roller 7 can be in contact with the edge opening of the material guide tube all the time due to the elastic force of the elastic cushion 9, thereby avoiding the phenomenon that the driven roller 7 stops rotating due to poor collision and also avoiding the phenomenon that the moving sensor 8 is triggered by mistake;

referring to fig. 3 and 5, each mounting bracket 6 is rotatably connected with a driven roller 7, each driven roller 7 includes a roller 701, the upper and lower ends of each roller 701 are respectively connected with a rotating shaft 702 rotatably connected with the mounting bracket 6, the edge of each guide pipe extends into the feeder 2 and abuts against the roller 701, when the feeder 2 rotates, the guide pipes are fixed, so that the rollers 701 rotate and rotate along the edge of the guide pipes, when the mobile sensor 8 detects that the mobile sensor is rotating normally, it is indirectly indicated that the ball mill body 1 is not jammed in the working process, the side walls of the rollers 701 are fixedly connected with a plurality of convex plates 703 distributed at equal intervals, the convex plates 703 are arranged opposite to the mobile sensor 8, the convex plates 703 are mainly used for increasing protrusions, the plurality of convex plates 703 pass through the mobile sensor 8 at intervals, so that the mobile sensor 8 can monitor the rotation of the rollers 701, and the monitoring of the mobile sensor 8 is not sensitive, the shape of the rollers 701 gradually increases from two sides to the middle, and the magnetic properties are provided, so that the edges of the guide pipes 703 are not noisy;

referring to fig. 6 and 8, a movement sensor 8 (which is prior art, and the specific type is selected according to actual requirements, and will not be described in detail herein) is installed on the mounting frame 6 and is opposite to the driven roller 7, and the movable inductor 8 is electrically connected with a control processor, the middle part of the feeding plate 4 is rotationally connected with a plurality of baffle plates 11, the rotating angle range of the baffle plates 11 is 0-90 degrees, when the material stopping plates 11 rotate by 0 degree, the feeding plate 4 is in a closed state, when the material stopping plates 11 rotate by 90 degrees, the feeding plate 4 is in an open state, clinker enters the inside of the ball mill body 1 through gaps among the material stopping plates 11, and the side walls of the two sides of the material stopping plates 11 are fixedly connected with silica gel strips, the silica gel strips have good sealing performance, the gap between two adjacent material stopping plates 11 can be eliminated, when the feed plate 4 is in a closed state, the dust overflow prevention effect is effectively achieved, a plurality of hooks 1101 distributed at equal intervals are fixedly connected to each material blocking plate 11, a mounting cavity 401 is formed in the inner wall of the feed plate 4 above the material blocking plates 11, and a plurality of servo motors 402 electrically connected with the control processor are installed in the installation cavity 401 (the specific connection mode and principle are well known to those skilled in the art, the specific model of the servo motor is selected according to actual requirements, and will not be described in detail herein), the output shaft of each servo motor 402 is connected with one material stopping plate 11, an alarm is installed outside the feeder 2, and the alarm is electrically connected with the control processor, when the driver feels a jam, the mobile inductor 8 sends a signal to the control processor, and the control processor further starts the alarm to give an alarm sound to remind the worker to take measures in time, so that the further damage of the parts is effectively avoided.

The working principle of the device is as follows: the guide pipe for feeding is stretched into the feeder 2, the edge opening of the guide pipe is inserted into the annular slot 501, then the guide pipe is fixed, the edge opening of the guide pipe abuts against the driven roller 7 at the moment, after the ball mill body 1 is started to rotate, the feeder 2 rotates along with the ball mill body 1 and the guide pipe is fixed, so the driven roller 7 rotates under the friction force of the edge opening, the dust blocking sleeve 3 can prevent dust generated during feeding from overflowing, clinker enters the ball mill body 1 through gaps among the plurality of material blocking plates 11, the hooks 1101 hook braided fabrics mixed in the clinker so as to prevent the clinker from entering the ball mill body 1 to cause stuffiness, when the ball mill body 1 has the stuffiness, the ball mill body 1 stops rotating, so the moving sensor 8 also stops rotating, at the moment, the moving sensor 8 monitors that the convex plate 703 on the driven roller 7 does not move any more, so the moving sensor 8 sends a signal to the control processor, the control processor further starts the servo motor 402 to rotate the material blocking plates 11 to close the feed plate 4, thereby timely preventing the clinker from entering the driven roller body 1 to effectively and slowing down the stuffiness.

The scheme is that the dust blocking sleeve 3 and the feeding plate 4 are additionally arranged on the basis of the existing ball mill feeder 2 to block braided fabrics mixed in cement, so that the occurrence probability of a vehicle-stopping phenomenon is effectively reduced, the continuous conveying of clinker can be timely blocked after the vehicle-stopping phenomenon occurs, the vehicle-stopping phenomenon is effectively slowed down, the ball mill component is protected, the dust blocking sleeve 3 can be directly connected with the material guide pipe to play an effective dustproof role, the driven roller 7 is rotated by utilizing the relative rotation effect of the rotating feeder 2 and the static material guide pipe, the rotation of the driven roller 7 is monitored by utilizing the movable sensor 8, the driven roller 7 stopped after the vehicle-stopping phenomenon occurs triggers the movable sensor 8, the movable sensor 8 further controls the material blocking plate 11 on the feeding plate 4 to be closed, so that the clinker is prevented from being continuously fed, meanwhile, the hook 1101 on the material blocking plate 11 can hook the braided fabrics mixed in the clinker when the clinker is fed, and the braided fabrics are effectively prevented from causing the vehicle-stopping of the ball mill body 1.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and modifications within the scope of the present invention.

Claims

1. The utility model provides a ball mill is used in production of filtration formula cement, includes ball mill body (1), feeder (2) are installed to the one end of ball mill body (1), and have inserted baffle pipe, its characterized in that in feeder (2): feeder (2) are close to inner wall fixedly connected with dust-blocking sleeve (3) of import department, and middle part fixedly connected with feed plate (4) of dust-blocking sleeve (3), dust-blocking sleeve (3) are close to lateral wall fixedly connected with annular plug connector (5) of feeder (2) import department, and the middle part lateral wall of annular plug connector (5) sets up annular slot (501) that matches with the passage, the lateral wall of annular slot (501) is connected with a plurality of equidistant distribution's mounting bracket (6), and all rotates on every mounting bracket (6) and be connected with driven voller (7), install on mounting bracket (6) just to moving inductor (8) that driven voller (7) set up, and move and be connected with the control treater on inductor (8), the middle part of feed plate (4) rotates and is connected with a plurality of material-blocking plates (11), and on every material-blocking plate (11) equal fixedly connected with a plurality of equidistant distribution's couple (1101), feed plate (4) are located the inner wall of material-blocking plate (11) top and have seted up installation cavity (401), and install a plurality of material-blocking plate and control treater electricity is connected with servo motor (402) output shaft (402) and servo motor (11).

2. The ball mill for producing filter type cement according to claim 1, wherein: the driven roller (7) comprises a roller body (701), and the upper end and the lower end of the roller body (701) are both connected with a rotating shaft (702) rotatably connected with the mounting frame (6).

3. The ball mill for filter type cement production according to claim 2, characterized in that: the side wall of the roller body (701) is fixedly connected with a plurality of convex plates (703) which are distributed at equal intervals, and the convex plates (703) are arranged right opposite to the movable inductor (8).

4. The ball mill for producing filter type cement according to claim 2, characterized in that: the shape of the roller body (701) is gradually concave inwards from two sides to the middle, and the two sides of the roller body (701) are both magnetic.

5. The ball mill for producing filter type cement according to claim 1, wherein: an elastic cushion layer (9) is fixedly connected between the mounting frame (6) and the side wall of the annular slot (501), and the elastic cushion layer (9) is made of a net-shaped elastic material.

6. The ball mill for producing filter type cement according to claim 1, wherein: the upper and lower both sides lateral wall of annular slot (501) all sets up recess (502) that the multiunit is equidistant to be distributed, and sliding connection has in recess (502) and has magnetic restriction piece (10), restriction piece (10) are located the outside lateral wall activity of recess (502) and inlay and have the ball.

7. The ball mill for producing filter type cement according to claim 6, wherein: the inner wall of the groove (502) is fixedly connected with a limiting sliding rod (1001), and the limiting sliding rod (1001) penetrates into the limiting block (10) and is connected with the limiting block in a sliding mode.

8. The ball mill for filter type cement production according to claim 1, characterized in that: the dust blocking sleeve (3) is conical, and the caliber of the dust blocking sleeve (3) is gradually reduced from the outside to the inside of the feeder (2).

9. The ball mill for producing filter type cement according to claim 1, wherein: the rotation angle range of the material stopping plate (11) is 0-90 degrees, and the side walls of the two sides of the material stopping plate (11) are fixedly connected with silica gel strips.

10. The ball mill for producing filter type cement according to claim 1, wherein: an alarm is arranged outside the feeder (2) and is electrically connected with the control processor.