CN211563225U - A crushing, grinding and screening integrated device with automatic cleaning function - Google Patents

Abstract

The utility model relates to an integrated device for crushing, grinding and screening with automatic cleaning function, which comprises a crushing and grinding unit, a screening unit and a cleaning unit which are arranged and communicated in sequence from top to bottom. The crushing and grinding unit comprises a grinding bowl. , The grinding hammer placed in the grinding bowl body and the grinding hammer shaft connected with the grinding hammer, the center axis of the grinding hammer shaft, the grinding hammer and the grinding bowl body are consistent, and the grinding bowl body is provided with a feeding device , Between the grinding hammer and the grinding bowl, the hammering and crushing area of the material and the grinding and unloading area of the material are formed. The grinding hammer can perform a compound motion of rotation and hammering in the grinding bowl, and the grinding hammer is in The height of the grinding bowl is adjustable. As can be seen from the above technical solutions, the utility model can integrate the functions of crushing, grinding, sieving and cleaning, and has the advantages of simple structure, high crushing efficiency, easy cleaning and the like.

Description

A crushing, grinding and screening integrated device with automatic cleaning function

technical field

The utility model relates to the field of crushing, grinding and sieving of dry-hard and medium-hard samples, in particular to an integrated crushing, grinding and sieving device with automatic cleaning function.

Background technique

The pretreatment process of physical and chemical analysis includes sample drying, sample crushing and grinding, sample sieving, sample leaching, etc. The process accounts for more than 60% of the entire physical and chemical analysis process, and the errors brought by the pretreatment process also account for the entire analysis process error. Most of the standard pretreatment procedures have a great impact on the analytical test results.

The existing crushing and grinding devices are basically divided into ball mill type, blade type, jaw type, mortar type, cone crushing type and so on. However, in the current physical and chemical analysis, many samples are crushed, ground and sieved with mesh number requirements, such as soil fertility testing, soil environment testing, chemical fertilizer testing, etc. The existing devices except the jaw crusher are difficult to measure. Samples with larger particle sizes are subjected to coarse grinding, and samples of different mesh numbers are obtained; at the same time, there are very few effective devices with integrated crushing, grinding and sieving functions and automatic cleaning functions in existing devices. In addition, the process of sample crushing, grinding and sieving is labor-intensive and dust pollution is heavy. The existing equipment cannot completely solve the processing process, and the degree of dependence on labor is high. This situation is not conducive to the implementation of the "Ten Articles of Soil" in my country and the impact on the national land. census and prevention.

Utility model content

The purpose of the utility model is to provide an integrated crushing, grinding and screening device with automatic cleaning function, which integrates crushing, grinding, screening and cleaning functions, and has the advantages of simple structure, high crushing efficiency, and easy cleaning.

In order to achieve the above purpose, the present utility model adopts the following technical solutions: including crushing and grinding units, sieving units and cleaning units that are arranged and communicated in sequence from top to bottom, and the crushing and grinding units include a grinding bowl, which is placed in the grinding bowl. The grinding hammer in the body and the grinding hammer shaft connected with the grinding hammer, the central axis of the grinding hammer shaft, the grinding hammer and the grinding bowl are consistent, and the grinding bowl is provided with a feeding device, and the grinding Between the hammer and the grinding bowl, the hammering and crushing area of the material and the grinding and unloading area of the material are formed. The grinding hammer can perform the compound motion of rotation and hammering in the grinding bowl, and the height of the grinding hammer in the grinding bowl The position is adjustable. The screening unit includes a screening barrel that communicates with the outlet of the grinding bowl. The screening barrel is driven by an oscillating drive motor to reciprocate along its own circumferential direction. The sieve barrel is provided with a screen for sieving materials, and the cleaning unit includes a valve body which is communicated with the outlet of the sieving barrel through the collecting barrel, a valve core placed in the valve body, and a valve body matched with the valve body. The valve cover and the valve core driving motor connected with the valve core, the valve body is a three-way valve body, the valve core is a two-way valve core, and the valve core driving motor drives the valve core to rotate to form the discharge access and cleaning access.

The grinding bowl body has a barrel-shaped structure as a whole, including a barrel body with an open structure at the upper and lower ends and a cover body sealed with the upper end of the barrel body. The barrel body, the second barrel body and the third barrel body, the first barrel body and the third barrel body are cylindrical, the second barrel body is a frustum shape with a large upper mouth and a small lower mouth, wherein: the first barrel The diameter of the body is consistent with the diameter of the upper mouth of the second barrel, the diameter of the third barrel is consistent with the diameter of the lower mouth of the second barrel, and the diameter of the first barrel is larger than the diameter of the third barrel;

The first barrel body is of a split structure, including an upper barrel body and a lower barrel body that are snap-connected to each other, the upper barrel body is a plastic barrel body, and the lower barrel body is a metal or ceramic barrel body; The barrel wall of the upper barrel body is provided with a first air port and a second air port which are communicated with the inside of the barrel body; the lower barrel body, the second barrel body and the third barrel body have an integrated structure.

The feeding device is arranged on the cover of the grinding bowl, and the feeding device includes a feeding hopper that is communicated with the inside of the grinding bowl and a feeding cover that is hingedly connected to the inlet of the feeding hopper. There is an air intake gap between the feed cover and the feed hopper.

The grinding hammer is an integral structure, including a first hammer body, a second hammer body and a third hammer body arranged in sequence from top to bottom, and the first hammer body and the second hammer body are two mirror-imaged bodies. The circular table structure, the third hammer body is a cylindrical structure, the first hammer body has a small upper opening and a large lower opening, the second hammer body has a large upper opening and a small lower opening, and the second hammer body has a small upper opening and a large lower opening. The cone surface and the cone surface of the second barrel are non-parallel surfaces, the diameter of the third hammer body is consistent with the diameter of the lower mouth of the second hammer body, and the gap between the second hammer body and the second barrel body is consistent. The gap forms the hammer crushing area of the material, the gap between the third hammer and the third barrel forms the grinding and unloading area of the material, and the width of the gap between the third hammer and the third barrel is the size It is equal to the diameter of the mesh required by the material, and the third hammer body is provided with threads;

The included angle between the conical surface of the second hammer body and the conical surface of the second barrel is 7.5°˜15°.

One end of the grinding hammer shaft is connected with the grinding hammer, and the other end of the grinding hammer shaft penetrates the cover body of the grinding bowl and is connected with the impact driving mechanism arranged above the grinding bowl, and the end is provided with a groove and an inlay. There are two grooves. The two grooves are opened along the axial direction of the grinding hammer shaft and are opposite to each other. The embedded groove is a waist-shaped hole opened on the grinding hammer shaft. The embedded groove is provided with Two, the positions of the two insert grooves are set opposite to each other.

The impact driving mechanism is connected with the lifting mechanism arranged on the side of the grinding bowl through the cantilever connecting beam. The lifting mechanism includes a longitudinally arranged sliding table, and the sliding table is provided with a sliding block that forms a sliding fit therewith. The sliding block is connected with the cantilever connecting beam, and the sliding block is driven by the motor to move up and down along the direction defined by the sliding table, so as to realize the adjustment of the height of the grinding hammer in the grinding bowl.

The upper and lower ends of the screening barrel are respectively provided with an upper fixed flange and a lower fixed flange. The sieve barrel is fixed, and the oscillating driving motor is connected to the sieving barrel through a transmission device, and the transmission device includes a driving pulley coaxially arranged with the output shaft of the oscillating driving motor, and is fastened on the sieving barrel. The driven pulley and the synchronous belt connecting the driving pulley and the driven pulley, the outer barrel wall of the sieving barrel is provided with an annular fixing platform for fixing the driven pulley;

The barrel wall of the screening barrel is provided with a gap for installing a perspective window, the perspective window is bolted to the screening barrel, the perspective window is located at the corresponding position of the screening assembly, and the perspective window is Semi-circular, the diameter of the see-through window is consistent with the diameter of the sieving barrel.

A screen mesh assembly is provided in the sieving barrel, and the screen mesh assembly includes a screen mesh support frame in a ring-shaped structure, the outer wall of the screen mesh support frame is arc-shaped, and the maximum diameter of the outer wall of the screen mesh support frame is Consistent with the diameter of the inner barrel of the sieving barrel, the inner wall of the screen support frame is provided with an annular platform for placing the screen in the circumferential direction, and the upper part of the screen is provided with a pressure for fixing the screen in the annular platform. Ring, the screen support frame is provided with a rotating shaft passing through the screen support frame along its radial direction, one end of the rotating shaft is connected with the inner barrel wall of the screening barrel, and the other end of the rotating shaft penetrates the screen. The barrel wall of the barrel is connected with the screen driving motor arranged on the side of the screening barrel through the connecting bearing. Cut rotation.

The inlet of the collecting bucket is large and the outlet is small; the two ends of the valve core are respectively provided with rotating shafts, one end of the rotating shaft is connected with the valve cover through a bearing, and the other end of the rotating shaft is connected with the valve core driving motor through a bearing. The inlet, outlet and negative pressure cleaning port of the body are arranged at 120 degree intervals;

The direction of the discharge passage is: the inlet of the valve body→the first port of the valve core→the second port of the valve core→the discharge port of the valve body; the cleaning passage includes the cleaning of the discharge port of the valve body The cleaning passage of the passage and the inside of the whole machine, the direction of the cleaning passage of the valve body discharge port is: valve body discharge port → the first port of the valve core → the second port of the valve core → the negative pressure cleaning port of the valve body The direction of the cleaning passage inside the whole machine is: the first air port and/or the second air port of the grinding bowl → the inside of the whole machine → the inlet of the valve body → the second port of the valve core → the first port of the valve core →Valve body negative pressure cleaning port.

The crushing and grinding unit, the screening unit and the cleaning unit are respectively fixed on the support frame, and the support frame includes a first support plate and a second support plate arranged in parallel in the up-down direction. The second support plates are connected by longitudinally arranged connecting brackets, the first support plate is provided with a sliding table support frame for fixing the lifting mechanism, and the first support plate and the second support plate are respectively provided with The circular hole through which the crushing grinding unit and the sieving unit pass.

As can be seen from the above technical solutions, the utility model can integrate the functions of crushing, grinding, sieving and cleaning, and has the advantages of simple structure, high crushing efficiency, easy cleaning and the like.

Description of drawings

Fig. 1 is the front view of the present utility model;

Fig. 2 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 3 is the structural representation of the grinding bowl of the present invention;

Fig. 4 is the structural representation of the grinding hammer of the present invention;

Fig. 5 is the cooperating state diagram of the grinding bowl body and the grinding hammer when the utility model is in the mode of crushing, grinding and sieving;

Fig. 6 is the state diagram of the cooperation between the grinding bowl and the grinding hammer when the utility model is in the cleaning mode;

Fig. 7 is the structural representation of the screening unit of the present utility model;

Fig. 8 is the exploded structure schematic diagram of the screening unit of the present utility model;

Fig. 9 is the structural representation of the screening assembly of the present utility model;

Fig. 10 is the structural representation of the cleaning unit of the present invention;

Figure 11 is a schematic diagram of the exploded structure of the cleaning unit of the present invention;

12 is a schematic diagram of the connection between the grinding hammer shaft and the punching drive mechanism of the present invention;

13 is a schematic structural diagram of the impact drive mechanism of the present invention;

14 is a schematic structural diagram of the grinding hammer shaft of the present invention when it is in the lower limit position;

FIG. 15 is a schematic structural diagram of the grinding hammer shaft of the present invention when it is in the upper limit position.

The symbols in the above drawings are:

Crushing and grinding unit 10, grinding bowl 11, cover 111, first barrel 112, second barrel 113, third barrel 114, upper barrel 1121, lower barrel 1122, first air port 1123, second air port 1124, grinding hammer 12, first hammer body 121, second hammer body 122, third hammer body 123, thread 1231, grinding hammer shaft 13, groove 131, insert groove 132, fixing bolt 133, hammer crushing area 14, Grinding unloading area 15, first flange 16, second flange 17, screening unit 20, screening barrel 21, upper rotating bearing 211, lower rotating bearing 212, annular fixed table 213, oscillating drive motor 22. Screen mesh 23, mesh support frame 231, annular platform 232, pressure ring 233, rotating shaft 234, mesh drive motor 235, upper fixed flange 24, lower fixed flange 25, driving pulley 26, Driven pulley 27, timing belt 28, see-through window 29, cleaning unit 30, valve body 31, valve body inlet 311, valve body outlet 312, valve body negative pressure cleaning port 313, valve core 32, valve The first port 321 of the core, the second port 322 of the valve core, the valve cover 33, the valve core drive motor 34, the fifth flange 35, the feeding device 40, the feeding hopper 41, the feeding cover 42, the collecting Material barrel 50, third flange 51, fourth flange 52, impact drive mechanism 60, lifting mechanism 70, cantilever connecting beam 71, slide table 72, slider 73, motor 74, support frame 80, first support Plate 81 , second support plate 82 , connection bracket 83 , slide support bracket 84 , first bracket 85 , second bracket 86 , and third bracket 87 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1 and 2, an integrated crushing, grinding and screening device with automatic cleaning function includes crushing and grinding units 10, sieving units 20 and cleaning units 30, which are arranged and connected in sequence from top to bottom. The unit 10 includes a grinding bowl body 11, a grinding hammer 12 placed in the grinding bowl body 11, and a grinding hammer shaft 13 connected with the grinding hammer 12. The central axes of the grinding hammer shaft 13, the grinding hammer 12 and the grinding bowl body 11 match, The grinding bowl 11 is provided with a feeding device 40 . Between the grinding hammer 12 and the grinding bowl 11 , a hammering and crushing area 14 for materials and a grinding and unloading area 15 for materials are formed. The grinding hammer 12 can be carried out in the grinding bowl 11 The compound motion of rotation and hammering, and the height position of the grinding hammer 12 in the grinding bowl body 11 can be adjusted. The oscillating drive motor 22 drives it to reciprocate along its own circumferential direction. The sieve barrel 21 is provided with a screen 23 for screening materials. The cleaning unit 30 includes a collecting barrel 50 connected to the outlet of the sieving barrel 21. The valve body 31, the valve core 32 placed in the valve body 31, the valve cover 33 matched with the valve body 31, and the valve core driving motor 34 connected with the valve core 32, the valve body 31 is a three-way valve body, that is Including the inlet 311 of the valve body, the outlet port 312 of the valve body and the negative pressure cleaning port 313 of the valve body, the valve core 32 is a two-way valve core, that is, the first port 321 of the valve core and the second port of the valve core are included. port 322, the valve core driving motor 34 drives the valve core 32 to rotate to form a discharge passage and a cleaning passage. Specifically, the direction of the discharge passage is: the inlet of the valve body→the first port of the valve core→the second port of the valve core→the discharge port of the valve body; the cleaning passage includes the cleaning passage of the discharge port of the valve body And the cleaning passage inside the whole machine, the cleaning passage of the valve body outlet is as follows: the valve body outlet → the first port of the valve core → the second port of the valve core → the negative pressure cleaning port of the valve body; the whole machine The direction of the internal cleaning passage is: the first air port and/or the second air port of the grinding bowl → the inside of the whole machine → the inlet of the valve body → the second port of the valve core → the first port of the valve core → the negative pressure of the valve body Clean the mouth.

Further, as shown in FIG. 3 , the grinding bowl 11 has a barrel-shaped structure as a whole, including a barrel with an open structure at the upper and lower ends and a cover 111 sealed with the upper end of the barrel. The barrel includes a barrel from top to bottom. The first barrel 112 , the second barrel 113 and the third barrel 114 are arranged in sequence, the first barrel 112 and the third barrel 114 are cylindrical, and the second barrel 113 is a cone with a large upper mouth and a small lower mouth Table-shaped, wherein: the diameter of the first barrel 112 is consistent with the diameter of the upper mouth of the second barrel 113, the diameter of the third barrel 114 is consistent with the diameter of the lower mouth of the second barrel 113, and the first barrel The diameter of 112 is larger than the diameter of the third barrel 114;

The first barrel 112 is a split structure, including an upper barrel 1121 and a lower barrel 1122 that are snap-connected to each other, the upper barrel 1121 is a plastic barrel, and the lower barrel 1122 is a metal or ceramic barrel; the upper barrel 1121 The barrel wall is provided with a first air port 1123 and a second air port 1124 which communicate with the inside of the barrel body; the lower barrel body 1122, the second barrel body 113 and the third barrel body 114 are integrated.

Further, the feeding device 40 is disposed on the cover body 111 of the grinding bowl 11 , and the feeding device 40 includes a feeding hopper 41 that communicates with the interior of the grinding bowl 11 and a feeding cover that is hingedly connected to the inlet of the feeding hopper 41 . 42. An air inlet gap is left between the feed cover 42 and the feed hopper 41. That is, after the feeding cover 42 is firmly closed, there is an incomplete gap between the feeding hopper 41 and the feeding cover 42, and there is an air intake slit. Because during the feeding process, there will be material residues on the bucket wall of the feeding hopper 41. During the cleaning process, the air is sucked through the gap between the feeding cover 42 and the feeding hopper 41, and the position of the bucket wall of the feeding hopper 41 is affected. wash.

Further, as shown in FIG. 4 , the grinding hammer 12 is an integral structure, roughly in the shape of an upper cone and a lower cylinder. Specifically, the grinding hammer 12 includes a first hammer body 121 and a second hammer body which are arranged sequentially from top to bottom. 122 and the third hammer body 123, the first hammer body 121 and the second hammer body 122 are two circular truncated structures arranged in mirror images, the third hammer body 123 is a cylindrical structure, the first hammer body 121 has a small upper opening and a large lower opening, The second hammer body 122 has a large upper opening and a small lower opening, and the conical surface of the second hammer body 122 and the conical surface of the second barrel 113 are non-parallel surfaces, and the diameter of the third hammer body 123 is the same as the diameter of the second hammer body 122 The diameter of the lower mouth matches;

The gap between the second hammer body 122 and the second barrel body 113 forms the hammer crushing area 14 of the material, the gap between the third hammer body 123 and the third barrel body 114 forms the grinding and unloading area 15 for the material, and the third The width of the gap between the hammer body 123 and the third barrel 114 is equal to the diameter of the mesh required for the material, and the third hammer body 123 is provided with a thread 1231 , that is, the third hammer body 123 has a thread pushing structure. Specifically, the grinding hammer 12 is inserted into the grinding bowl 11 concentrically, and the grinding hammer 12 and the grinding bowl 11 are in a non-parallel state on their respective conical surfaces, forming an annular area with angles and gaps, that is, hammer crushing Zone 14; at the same time, the third hammer body 123 of the grinding hammer 12 and the third barrel body 114 of the grinding bowl body 11 have a gap for controlling the particle size when working together, that is, the grinding unloading zone 15. The diameters of the meshes are the same. When samples of different meshes need to be processed, the grinding hammer 12 needs to be replaced, that is, it is sufficient to ensure that the width of the gap is equal to the diameter of the required meshes.

Preferably, the included angle between the conical surface of the second hammer body 122 and the conical surface of the second barrel body 113 is 7.5°˜15°.

Further, one end of the grinding hammer shaft 13 is connected to the grinding hammer 12, and the other end of the grinding hammer shaft 13 penetrates the cover 111 of the grinding bowl 11 and is connected to the impact driving mechanism 60 disposed above the grinding bowl 11, and this end There are grooves 131 and embedded grooves 132. As shown in FIG. 12, two grooves 131 are provided. The two grooves 131 are opened along the axial direction of the grinding hammer shaft and are oppositely arranged. The embedded grooves 132 are opened on the grinding hammer shaft. For the waist-shaped groove, two embedding grooves 132 are provided, and the positions of the two embedding grooves 132 are set opposite to each other. The groove 131 is engaged with the protrusion provided on the impact drive mechanism, so that the grinding hammer shaft 13 is connected with the impact driving mechanism 60 and rotates synchronously; It is a waist-shaped sliding ball groove, and the fixing bolt 133 has two position limits in the embedded groove 132, that is, a high position and a low position, so that the grinding hammer 13 has an upper limit when it moves up and down in the grinding bowl 11. and the lower limit position, as shown in Figure 14 and Figure 15.

As shown in FIG. 13 , the impact driving mechanism 60 drives the grinding hammer 12 to realize the compound motion of rotation and hammering. The impact driving mechanism 60 includes a motor 61 , a swing shaft 62 and a piston assembly 63 , wherein: the motor 61 and the The swing shafts 62 are linked by a primary reduction gear, and the swing shaft 62 and the piston assembly 63 are linked by a secondary reduction gear. At the same time, the swing shaft 62 drives the piston in the piston assembly 63 to reciprocate. The specific structure and principle of the impact driving mechanism 60 can be referred to the existing electric hammer structure, which will not be repeated here.

Further, the impact driving mechanism 60 is connected with the lifting mechanism 70 provided on the side of the grinding bowl 11 through the cantilever connecting beam 71. The lifting mechanism 70 includes a longitudinally arranged sliding table 72, and the sliding table 72 is provided with a sliding table 72 that forms a sliding fit therewith. Block 73, the slider 73 is connected with the cantilever connecting beam 71, the slider 73 is driven by the motor 74 to move up and down along the direction defined by the sliding table 72, so as to realize the adjustment of the height of the grinding hammer 12 in the grinding bowl 11.

Further, as shown in Figures 7 and 8, the upper and lower ends of the sieving barrel 21 are respectively provided with an upper fixed flange 24 and a lower fixed flange 25, and the upper fixed flange 24 and the lower fixed flange 25 are respectively fixed to the sieving barrel 21 through the upper rotating bearing 211 and the lower rotating bearing 212, that is, the sieving barrel 21 is connected to the upper rotating bearing 211 and the lower rotating bearing 212, and can be connected to the upper rotating bearing 211 and the lower rotating bearing 212. The oscillating drive motor 22 is connected to the sieving barrel 21 through a transmission device, and the transmission device includes a driving pulley 26 coaxially arranged with the output shaft of the oscillating drive motor 22, fastened to the sieving barrel The driven pulley 27 on the body 21 and the synchronous belt 28 connecting the driving pulley 26 and the driven pulley 27, the outer barrel wall of the sieving barrel 21 is provided with an annular fixing table for fixing the driven pulley 27 213; that is, the driven pulley 27 is fixed on the sieving barrel 21 through the annular fixing table 213, and the oscillating drive motor 22 drives the driving pulley 26 and drives the driven pulley 27 and the sieving barrel 21 to move through the synchronous belt 28 .

The barrel wall of the screening barrel 21 is provided with a notch for installing the perspective window 29, the perspective window 29 is bolted to the screening barrel 21, the perspective window 29 is located at the corresponding position of the screening assembly, and the perspective window 29 is a semi-circular ring , the diameter of the see-through window 29 is consistent with the diameter of the sieving barrel 21 . The see-through window 29 is used to observe the operation of the screen assembly, and directly observe whether the screen 23 is stacked; the see-through window 29 can also be directly removed to deal with the problem of material accumulation of the screen 23 or to replace the screen assembly.

Further, as shown in FIG. 9 , the sieving barrel 21 is provided with a screen mesh assembly, and the screen mesh assembly includes a screen mesh support frame 231 in a ring-shaped structure. The outer wall of the screen mesh support frame 231 is arc-shaped, and the screen mesh supports The maximum diameter of the outer wall of the frame 231 is consistent with the diameter of the inner barrel of the screening barrel 21. The inner wall of the screen support frame 231 is provided with an annular platform 232 for placing the screen 23 in the circumferential direction. The pressing ring 233 fixed in the annular platform 232, the screen support frame 231 is provided with a rotating shaft 234 passing through the screen support frame 231 along its radial direction, and one end of the rotating shaft 234 is connected with the inner barrel wall of the sieving barrel 21, The other end of the rotating shaft 234 penetrates through the barrel wall of the sieving barrel 21 and is connected to the screen driving motor 235 arranged on the side of the screening barrel 21 through the connecting bearing. The screen driving motor 235 drives the screen 23 to reciprocate in the horizontal direction. Swing to form a rotation tangential to the inner barrel wall of the sieving barrel 21 .

Further, as shown in Figures 10 and 11, the inlet of the collecting bucket 50 is large and the outlet is small; the two ends of the valve core 32 are respectively provided with rotating shafts, one end of the rotating shaft is connected to the valve cover 33 through a bearing, and the other end of the rotating shaft passes through the bearing. Connected to the valve core drive motor, the inlet, outlet and negative pressure cleaning port of the valve body 31 are arranged at intervals of 120 degrees.

Further, the crushing and grinding unit 10, the screening unit 20 and the cleaning unit 30 are respectively fixed on the support frame 80. The support frame 80 includes a first support plate 81 and a second support plate 82 arranged in parallel in the up-down direction. The first support plate 81 and the second support plate 82 are connected by a longitudinally arranged connecting bracket 83. The first support plate 81 is provided with a slide support frame 84 for fixing the lifting mechanism 70. There are circular holes through which the crushing and grinding unit 10 and the sieving unit 20 pass.

Specifically, the junction of the second barrel 113 and the third barrel 114 of the grinding bowl 11 and the lower edge of the third barrel 114 are respectively provided with a first flange 16 and a second flange 17 . A flange 16 is fixed on the upper surface of the first support plate 81 , the second flange 17 is connected with the upper fixed flange 24 of the sieve barrel 21 , and the lower fixed flange 25 of the sieve barrel 21 Connected to the upper surface of the second support plate 82, the upper and lower ends of the collecting bucket 50 are respectively provided with a third flange 51 and a fourth flange 52. The lower plate surface is fixed, the fourth flange plate 52 is connected with the fifth flange plate 35 provided at the inlet of the valve body 31, the oscillation drive motor 22 is fixed on the upper plate surface of the second support plate 82 through the first bracket 85, the valve core The driving motor 34 is fixed on the lower surface of the second support plate 82 through the second bracket 86 , and the screen driving motor 235 is fixed on the sieve barrel through the third bracket 87 .

The utility model has two fixed operation modes, namely the crushing, grinding and sieving mode and the cleaning mode. The working principle and working process of the two modes are specifically described as follows:

1. Crushing, grinding and sieving mode:

In this mode, the lifting mechanism drives the cantilever connecting beam, the impact drive mechanism, the grinding hammer shaft, and the grinding hammer to descend, so that the grinding hammer enters the working position, that is, the grinding hammer is inserted into the grinding bowl concentrically, and there is a gap between the grinding hammer and the grinding bowl. The gap between the crushing area and the control particle size size, that is, the hammer crushing area and the grinding unloading area are formed between the grinding hammer and the grinding bowl. The third hammer of the grinding hammer just enters the third barrel of the grinding bowl, such as As shown in Figure 5, the grinding hammer shaft is at the lower limit of connection under the no-load state at the same time, and the grinding hammer is driven by the impact drive mechanism to rotate and hammer compound motion in the grinding bowl; in the sieving unit, driven by the oscillating drive motor , the driving pulley drives the driven pulley through the synchronous belt, thereby driving the screen barrel, repairing the perspective window, screen mesh components, screen mesh drive motor, etc. to make low-amplitude reciprocating circular swings in the circumferential horizontal direction, and by adjusting the oscillation drive The reciprocating rotation frequency of the motor can adjust the vibration frequency of the screen. In addition, in this mode, the screen drive motor is in static torque condition, and the position of the screen assembly in the screen barrel is horizontal and radial, and it reciprocates circularly with the screen barrel. In the cleaning unit, the first position of the valve core A port is communicated with the feed port of the valve body, the second port of the valve core is communicated with the discharge port of the valve body, and the drive motor of the valve core is in a static torque condition.

After the material is added from the feeding hopper, the material rotates and moves to the lower end of the gap of the hammer crushing area under the rotary extrusion of the grinding hammer. At the same time, the grinding hammer is moved up by the material accumulation, and the grinding hammer shaft moves to the upper limit. The impact of the impact drive device generates a vertical downward impact force, which impacts and crushes the materials in the gap of the hammer crushing zone. The particle size of the crushed materials is close to the corresponding mesh number, that is, the grinding hammer and the grinding bowl are under grinding After part of the gap size in the material area, it enters the grinding and unloading area for grinding and unloading, and immediately enters the screening unit; after the screening of the screen (mainly for the flexible materials existing in the material), the crushing and grinding are completed. The sieved material enters the feed port of the valve body through the collecting bucket, and then flows out through the first port of the valve core and the discharge port of the valve body, and enters the sample bucket or sample bag; The requirement is to replace the grinding hammer with a different clearance fit. To match the mesh gap, such as 10 mesh grinding, the gap between the grinding hammer and the grinding bowl should be 2mm, and the matching gap of 18 mesh should be 1mm. The grinding bowl should not be replaced, and the screen 23 should also be replaced with the corresponding screen. The crushing and grinding treatment of this device is composite impact crushing and grinding, and there are movements in two directions of hammering and rotation, especially vertical impact and hammering crushing, with high efficiency, and the material particles reach the limited particle size and below. When the grinding bowl is turned on, the material is immediately unloaded, so the material rarely accumulates and adheres in the grinding bowl; the whole device has a simple structure, which is convenient for cleaning the inside of it.

2. Cleaning mode:

In this mode, the lifting mechanism drives the cantilever connecting beam, the impact drive mechanism, the grinding hammer, and the grinding hammer shaft to rise, and the grinding hammer and the grinding bowl are separated in the grinding and unloading area. The lifting height of the grinding hammer is not less than twice the third The height of the hammer body is shown in Figure 6, that is, the gap between the grinding and unloading area becomes larger, and a state of no gap is formed between the third hammer body and the third barrel body; the impact drive mechanism continues to drive the grinding hammer and the grinding hammer shaft to rotate, That is, the grinding hammer needs to be raised to a certain height in the grinding port body. This is to eliminate the clearance space and let the cleaning flow channel out. At the same time, the grinding hammer keeps rotating at a low speed, because the access is from the first air port and/or the second air port. After the air flow, the rotation of the grinding hammer enables the airflow to clean the grinding hammer 360 degrees. In the sieving unit, the oscillating drive motor drives the driving pulley, and the driven pulley drives the sieving barrel, perspective window, screen assembly, and screen drive motor through the synchronous belt to continue to maintain a low-amplitude reciprocating motion in the circumferential direction. The frequency remains unchanged, and the screen drive motor drives the screen assembly to turn over.

1. Cleaning of the valve body outlet.

The spool drive motor drives the spool to rotate 120°. At this time, the first port of the spool is communicated with the outlet of the valve body, and the second port of the spool is communicated with the negative pressure cleaning port of the valve body. The negative pressure vacuum cleaner connected to the pressure cleaning port, at this time, the air flow enters the negative pressure vacuum cleaner from the discharge port through the negative pressure cleaning port to realize the cleaning of the valve body discharge port.

2. Internal cleaning of the whole machine.

After the valve body discharge port is cleaned, the valve core is driven by the valve core to drive the motor to rotate 120° again. At this time, the first port of the valve core is connected to the negative pressure cleaning port, and the second port of the valve core is connected to the valve body. The feeding port is connected to carry out negative pressure cleaning inside the whole machine. At this time, the airflow enters from the first air port and the second air port on the barrel body, and enters the negative pressure vacuum cleaner through the negative pressure cleaning port, forming a negative pressure direction in the whole machine. The swirling airflow flowing down cleans the device with internal negative pressure. At the same time, the feed hopper and the feed cover are not completely sealed, and there is a gap. Part of the air flow will flow into the whole machine from the feed hopper and the feed cover. The sample remaining at the feeding hopper is cleaned by negative pressure. After cleaning for a period of time, the action of the whole machine is reset, and it enters the next round of crushing, grinding and sieving mode.

Preferably, in the cleaning mode, the discharge port of the valve body is cleaned first, and then the inside of the whole machine is cleaned. This is because there is not much residue on the discharge port of the valve body, and the work of the device itself requires vibration. While cleaning the discharge port of the valve body, the vibration of the upper screening unit does not stop, and some materials stuck on the screen are removed. It takes a certain delay to vibrate and fall, so use this time to clean the valve body outlet first, and then clean the valve body outlet before entering the cleaning of the whole machine, that is, access from the first air port and the second air port Airflow, this cleaning step is also the shortest in terms of time.

The beneficial effects of the present utility model are: 1) The operating mode of the present utility model during crushing and grinding is a composite operation of impact hammering and grinding, which has a good crushing effect on hard and medium-hard samples, which is better than the current existing The crushing and grinding method, and there is a blanking structure for controlling the particle size of the material between the grinding hammer and the grinding bowl, which realizes the function of instant crushing, grinding and immediate blanking while controlling the particle size. 2) The utility model integrates a screening device at the lower end of the grinding and crushing unit, which realizes the integrated processing of crushing, grinding and sieving; 3) The utility model has a simple structure, and the grinding bowl is provided with an air inlet channel, and the A cleaning unit is installed below the sieve unit, and the vacuum suction device is connected through the valve body of the cleaning unit. The internal cleaning of the device can be completed by adjusting the rotation of the valve core, which greatly reduces the intensity of manual cleaning operations and facilitates physical and chemical analysis. Continuous crushing, grinding and sieving of samples.

The above-mentioned embodiments are only to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. On the premise of not departing from the design spirit of the present invention, those of ordinary skill in the art can understand the technical solutions of the present invention. Various modifications and improvements made shall fall within the protection scope determined by the claims of the present utility model.

Claims (10)

1. The utility model provides a broken grinding integrative device that sieves with self-cleaning function which characterized in that: the device comprises a crushing and grinding unit (10), a sieving unit (20) and a cleaning unit (30) which are sequentially arranged from top to bottom and are communicated with each other, wherein the crushing and grinding unit (10) comprises a grinding bowl body (11), a grinding hammer (12) arranged in the grinding bowl body (11) and a grinding hammer shaft (13) connected with the grinding hammer (12), the grinding hammer shaft (13), the grinding hammer (12) and the grinding bowl body (11) are matched with each other in central axis, a feeding device (40) is arranged on the grinding bowl body (11), a hammering and crushing area (14) of materials and a grinding and blanking area (15) of the materials are formed between the grinding hammer (12) and the grinding bowl body (11), the grinding hammer (12) can perform combined movement of rotating and hammering in the grinding bowl body (11), the height position of the grinding hammer (12) in the grinding bowl body (11) can be adjusted, and the sieving unit (20) comprises a sieving barrel body (21) communicated with an outlet of the grinding bowl body (11), sieving staving (21) carry out reciprocating motion by its circumference of self of oscillation drive motor (22) drive, sieving staving (21) in be equipped with screen cloth (23) that are used for sieving the material, cleaning unit (30) including valve body (31) that are linked together through collection storage bucket (50) and the export of sieving staving (21), arrange case (32) in valve body (31), valve gap (33) with valve body (31) matched with and case driving motor (34) that link to each other with case (32) in, valve body (31) be the tee bend valve body, case (32) be the two-way case, case driving motor (34) drive valve core (32) rotate in order to form ejection of compact passageway and washing passageway.

2. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 1, characterized in that: grinding alms bowl body (11) wholly be the tubbiness structure, including upper and lower both ends be the staving of open structure and with staving upper end looks sealed lid (111), the staving include first staving (112), second staving (113) and third staving (114) that set gradually from the top down, first staving (112) and third staving (114) be cylindric, second staving (113) are the frustum form that the big end opening is less than the top, wherein: the diameter of the first barrel body (112) is matched with the diameter of the upper opening of the second barrel body (113), the diameter of the third barrel body (114) is matched with the diameter of the lower opening of the second barrel body (113), and the diameter of the first barrel body (112) is larger than that of the third barrel body (114);

the first barrel body (112) is of a split structure and comprises an upper barrel body (1121) and a lower barrel body (1122) which are connected in a clamping manner, the upper barrel body (1121) is a plastic barrel body, and the lower barrel body (1122) is a metal or ceramic barrel body; a first air port (1123) and a second air port (1124) which are communicated with the interior of the barrel body are arranged on the barrel wall of the upper barrel body (1121); the lower barrel body (1122), the second barrel body (113) and the third barrel body (114) are of an integrated structure.

3. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 1, characterized in that: the feeding device (40) is arranged on the cover body (111) of the grinding bowl body (11), the feeding device (40) comprises a feeding hopper (41) communicated with the inside of the grinding bowl body (11) and a feeding cover (42) hinged with an inlet of the feeding hopper (41), and an air inlet gap is reserved between the feeding cover (42) and the feeding hopper (41).

4. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 1, characterized in that: the grinding hammer (12) is of an integral structure and comprises a first hammer body (121), a second hammer body (122) and a third hammer body (123) which are sequentially arranged from top to bottom, the first hammer body (121) and the second hammer body (122) are of two circular truncated cone structures arranged in a mirror image mode, the third hammer body (123) is of a cylindrical structure, the upper opening of the first hammer body (121) is small, the lower opening of the first hammer body is large, the upper opening of the second hammer body (122) is large, the lower opening of the second hammer body is small, the conical surface of the second hammer body (122) and the conical surface of the second barrel body (113) are non-parallel surfaces, the diameter of the third hammer body (123) is matched with the diameter of the lower opening of the second hammer body (122), a gap between the second hammer body (122) and the second barrel body (113) forms a hammering and crushing area (14) of materials, and a gap between the third hammer body (123) and the third barrel body (114) forms a grinding area (15) of the materials, the width of a gap between the third hammer body (123) and the third barrel body (114) is equal to the diameter of the required mesh of materials, and a thread (1231) is arranged on the third hammer body (123);

the included angle between the conical surface of the second hammer body (122) and the conical surface of the second barrel body (113) is 7.5-15 degrees.

5. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 1 or 4, characterized in that: one end of the grinding hammer shaft (13) is connected with the grinding hammer (12), the other end of the grinding hammer shaft (13) penetrates through a cover body (111) of the grinding bowl body (11) and then is connected with an impact driving mechanism (60) arranged above the grinding bowl body (11), a groove and two embedded grooves are formed in the end of the grinding hammer shaft, the two grooves are formed in the axial direction of the grinding hammer shaft and are arranged oppositely, the embedded grooves are kidney-shaped holes formed in the grinding hammer shaft, the two embedded grooves are formed, and the two embedded grooves are arranged oppositely.

6. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 5, characterized in that: impact drive mechanism (60) link to each other through cantilever tie-beam (71) and elevating system (70) that set up at grinding alms bowl body (11) side, elevating system (70) including vertical slip table (72) that set up, slip table (72) on be equipped with rather than forming sliding fit's slider (73), slider (73) link to each other with cantilever tie-beam (71), slider (73) drive its orientation of injecing along slip table (72) by motor (74) and reciprocate to realize grinding hammer (12) the regulation of the height position in grinding alms bowl body (11).

7. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 1, characterized in that: an upper fixing flange plate (24) and a lower fixing flange plate (25) are respectively arranged at the upper end and the lower end of the sieving barrel body (21), the upper fixing flange plate (24) and the lower fixing flange plate (25) are respectively fixed with the sieving barrel body (21) through an upper rotating bearing (211) and a lower rotating bearing (212), the oscillation driving motor (22) is connected with the sieving barrel body (21) through a transmission device, the transmission device comprises a driving pulley (26) coaxially arranged with an output shaft of the oscillation driving motor (22), a driven pulley (27) fastened on the sieving barrel body (21) and a synchronous belt (28) connected with the driving pulley (26) and the driven pulley (27), and an annular fixing table (213) used for fixing the driven pulley (27) is arranged on the outer barrel wall of the sieving barrel body (21);

be equipped with the breach that is used for installing perspective window (29) on the bucket wall of sieving staving (21), perspective window (29) and the staving (21) bolted connection that sieves, perspective window (29) be located the corresponding position of the subassembly that sieves, and perspective window (29) are half toroidal, the diameter of perspective window (29) is identical with the diameter of sieving staving (21).

8. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 1 or 7, characterized in that: the screening barrel body (21) is internally provided with a screen assembly, the screen assembly comprises a screen support frame (231) which is of an annular structure, the outer wall of the screen support frame (231) is of an arc shape, the maximum diameter of the outer wall of the screen support frame (231) is matched with the diameter of an inner barrel of the screening barrel body (21), the inner wall of the screen support frame (231) is circumferentially provided with an annular platform (232) for placing a screen (23), a press ring (233) for fixing the screen (23) in the annular platform (232) is arranged above the screen (23), the screen support frame (231) is radially provided with a rotating shaft (234) penetrating through the screen support frame (231), one end of the rotating shaft (234) is connected with the inner barrel wall of the screening barrel body (21), the other end of the rotating shaft (234) penetrates through the barrel wall of the screening barrel body (21) and is connected with the side of a screen driving motor (235) arranged on the screening barrel body (21) through, the screen driving motor (235) drives the screen (23) to swing back and forth along the horizontal direction to form rotation tangent to the inner barrel wall of the sieving barrel body (21).

9. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 1, characterized in that: the inlet of the collecting barrel (50) is large, and the outlet is small; two ends of the valve core (32) are respectively provided with a rotating shaft, one end of the rotating shaft is connected with the valve cover (33) through a bearing, the other end of the rotating shaft is connected with a valve core driving motor through a bearing, and an inlet, a discharge hole and a negative pressure cleaning hole of the valve body (31) are arranged at an interval of 120 degrees;

the direction of the discharging passage is as follows: the inlet of the valve body → the first port of the valve core → the second port of the valve core → the discharge port of the valve body; the cleaning passage comprises a cleaning passage at the valve body discharge port and a cleaning passage in the whole machine, and the trend of the cleaning passage at the valve body discharge port is as follows: the discharge port of the valve body → the first port of the valve core → the second port of the valve core → the negative pressure cleaning port of the valve body; the cleaning path inside the whole machine is in the following direction: the first and/or second air port of the grinding bowl → the interior of the machine → the inlet of the valve body → the second port of the valve core → the first port of the valve core → the negative pressure cleaning port of the valve body.

10. The crushing, grinding and sieving integrated device with the automatic cleaning function according to claim 1, characterized in that: broken grinding unit (10), sieve unit (20) and cleaning unit (30) equally divide and do not fix on support frame (80), support frame (80) including upper and lower direction parallel arrangement's first backup pad (81) and second backup pad (82), first backup pad (81) and second backup pad (82) between be connected through vertically connecting support (83) that set up, first backup pad (81) on be equipped with slip table support frame (84) of fixed elevating system (70), first backup pad (81) and second backup pad (82) on be equipped with respectively and supply broken grinding unit (10) and sieve the round hole that unit (20) pass through.

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