Grinding and cleaning device and double-roller grinding machine

Abstract

The utility model relates to the technical field of grinding and cleaning, in particular to a grinding and cleaning device and a roller grinding machine. The grinding and cleaning device comprises a wool roller, a roller frame and a telescopic mechanism, wherein the wool roller and a grinding roller to be cleaned are arranged in parallel; the roller frame is connected with two ends of the wool roller; the telescopic mechanism is arranged on a rack where the grinding roller is installed, and the telescopic end of the telescopic mechanism is connected with the roller frame. The telescopic mechanism is used for driving the roller frame to move when the cleaning task of the grinding roller is executed so that the wool roller can be tightly attached to the grinding roller for cleaning. By means of the grinding and cleaning device, the grinding roller can be cleaned in time after material grinding is completed, cross contamination in the grinding process of different types of samples is prevented, the wool roller is an easily-damaged standard part and is convenient to purchase and replace, and therefore the grinding and cleaning device can be well suitable for a double-roller grinding machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grinding and cleaning, especially to a grinding and cleaning device and a pair of roll grinding machine. BACKGROUND

[0002] The pair of roll grinding is one of grinding equipment, and the pair of roll inside will accumulate dust and impurities in the use process, which not only affects the processing efficiency of grinding, but also produces cross contamination when grinding different samples, and the cross contamination is needed to prevent in the sample detection process. Therefore, the grinding roll needs to be cleaned after each grinding.

[0003] The conventional cleaning methods include manual cleaning method, chemical cleaning method, ultrasonic cleaning method and high-pressure nozzle cleaning method. The manual cleaning method needs to use a brush or a cotton cloth to clean the dust and impurities on the surface of the roll; the chemical cleaning method is to uniformly apply a corrosive cleaning agent on the surface of the roll, and then clean it by using water or alcohol combined with the manual cleaning method; the ultrasonic cleaning method is to immerse the roll in an ultrasonic cleaning tank filled with a chemical cleaning solution, and slowly rotate the roll during cleaning to make the solution vibrate to generate bubbles, thereby removing impurities; the high-pressure nozzle cleaning method is to spray cleaning liquid or compressed air on the surface of the roll through a high-pressure nozzle installed on the base to clean the impurities on the roll. For small pair of roll grinding equipment that needs to be cleaned every time after grinding, the above cleaning methods are difficult to achieve. SUMMARY

[0004] In view of the above technical problems, the utility model provides a kind of grinding and cleaning device and pair of roll grinding machine, it can be based on the cleaning demand of grinding roll to clean it in time, prevent grinding sample from being polluted by dirt on roll.

[0005] The utility model embodiment provides the following scheme:

[0006] First, the utility model embodiment provides a kind of grinding and cleaning device, device includes:

[0007] Wool roll, it is parallelly arranged with the grinding roll to be cleaned;

[0008] Roller stand, it is connected with the both ends of wool roll;

[0009] Telescopic mechanism, it is installed on the rack of grinding roll, and the telescopic end of telescopic mechanism is connected with roller stand;Telescopic mechanism is used to drive roller stand to move when executing the cleaning task of grinding roll, so that wool roll is cleaned tightly.

[0010] In an alternative embodiment, the roller stand includes:

[0011] First end plate, it is connected with one end of wool roll;

[0012] The second end plate is connected with the other end of the wool roller, and the first end plate is arranged in parallel with the second end plate.

[0013] The connecting plate is connected with the first end plate at one end and connected with the second end plate at the other end, and the connecting plate is connected with the telescopic end of the telescopic mechanism.

[0014] In an alternative embodiment, a plurality of parallel guide grooves are arranged on the frame; the first end plate, the second end plate and the connecting plate have the same width and are arranged in the guide grooves.

[0015] In an alternative embodiment, the connecting plate is provided with a stepped structure for positioning the first end plate and the second end plate.

[0016] In an alternative embodiment, the telescopic mechanism comprises:

[0017] The cylinder is arranged on the frame;

[0018] The push plate is arranged on the telescopic rod of the cylinder and away from the cylinder body, the length direction of the push plate is perpendicular to the length direction of the telescopic rod, and the push plate is provided with a mounting hole for connecting the roller frame.

[0019] In an alternative embodiment, the telescopic mechanism further comprises:

[0020] The fixing member is arranged on the outer periphery of the cylinder to fix the cylinder on the frame.

[0021] In an alternative embodiment, the telescopic mechanism further comprises:

[0022] The gasket is arranged between the fixing member and the frame.

[0023] In a second aspect, the utility model further provides a pair of roll grinding machine, each grinding roll of the pair of roll grinding machine is provided with the grinding and cleaning device of any one of the first aspect laterally.

[0024] In an alternative embodiment, the first grinding roll of the pair of roll grinding machine is arranged on the first group of mounting plates arranged in parallel, the second grinding roll of the pair of roll grinding machine is arranged on the second group of mounting plates arranged in parallel, and the connection between the first group of mounting plates and the second group of mounting plates is arranged as a stepped structure.

[0025] In an alternative embodiment, at least one air jet head is arranged on the pair of roll grinding machine, the air jet head is connected with a preset high-pressure gas source to spray compressed air into the pair of roll grinding machine.

[0026] Compared with the prior art, the grinding and cleaning device and the pair of roll grinding machine have the following advantages:

[0027] The utility model discloses a grinding cleaning device, including wool roller, roller frame and telescopic mechanism, and the wool roller is parallelly arranged with the grinding roller to be cleaned, the both ends of roller frame are connected with the wool roller, the telescopic mechanism is arranged on the frame of the grinding roller, and the telescopic end of telescopic mechanism is connected with the roller frame, and the telescopic mechanism is used to drive the roller frame to move when performing the cleaning task of grinding roller, so that the wool roller is cleaned closely to the grinding roller. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0029] Figure 1 The structure schematic diagram of the grinding cleaning device provided by the utility model embodiment is shown in the figure.

[0030] Figure 2 The explosion structure schematic diagram of the grinding cleaning device provided by the utility model embodiment is shown in the figure.

[0031] Figure 3 The structure schematic diagram of the roller grinding machine provided by the utility model embodiment is shown in the figure.

[0032] The figure mark explanation: 1 - wool roller, 2 - roller frame, 3 - telescopic mechanism, 4 - first grinding roller, 5 - second grinding roller, 6 - frame, 7 - guide groove, 8 - second group of mounting plate, 9 - first group of mounting plate, 10 - first fixed plate, 11 - second fixed plate, 12 - belt pulley, 13 - gear, 14 - jet head, 15 - hopper.

[0033] 21 - first end plate, 22 - second end plate, 23 - connecting plate.

[0034] 31 - air cylinder, 32 - push plate, 33 - mounting hole, 34 - fixed part, 35 - gasket. DETAILED DESCRIPTION

[0035] The technical scheme in the utility model embodiments will be described clearly and completely in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the utility model embodiments, all other embodiments obtained by those skilled in the art belong to the protection scope of the utility model embodiments.

[0036] Please refer to Figure 1 , Figure 1 The structure diagram of the grinding cleaning device is provided in the embodiment of the utility model, and the grinding cleaning device comprises a wool roller 1, a roller support 2 and a telescopic mechanism 3. The grinding cleaning device can be applied to cleaning a pair of roller grinding machines for dry solid materials. The embodiment of the utility model will be specifically described by taking a grinding machine for soil detection as an example.

[0037] The wool roller 1 is arranged in parallel with the grinding roller to be cleaned. The wool roller 1 is mainly composed of a roller core and a wool layer wrapped outside the roller core. The wool is selected from varieties with certain softness, elasticity and adsorption. The wool layer on the wool roller 1 can effectively adsorb and wipe the impurities on the surface of the grinding roller without damaging the surface of the grinding roller.

[0038] The roller support 2 is connected with both ends of the wool roller 1. The roller support 2 can be made of metal materials such as steel plates or aluminum alloys, and has certain strength and rigidity, which can bear the weight of the wool roller 1 and the force generated during the cleaning process. It usually includes two end supports and a cross beam or longitudinal beam structure connecting them. The end supports are provided with bearing seats or holes for installing the shaft of the wool roller 1. The roller support 2 can support and fix the wool roller 1, ensure that the wool roller 1 maintains a stable position and posture during the cleaning process, and make the wool roller 1 maintain a parallel and good contact state with the grinding roller.

[0039] The telescopic mechanism 3 is arranged on the rack 6 on which the grinding roller is installed, and the telescopic end of the telescopic mechanism 3 is connected with the roller support 2. The telescopic mechanism 3 is used to drive the roller support 2 to move when performing the cleaning task of the grinding roller, so that the wool roller 1 closely contacts the grinding roller for cleaning, and the wool roller 1 can be moved away after the cleaning task is completed. The telescopic mechanism 3 can be a hydraulic telescopic rod, a pneumatic telescopic rod and an electric telescopic rod, etc. Taking the hydraulic telescopic rod as an example, it includes a hydraulic cylinder, a hydraulic pump, an oil pipe and a control system, etc. The electric telescopic rod contains a motor, a screw nut transmission mechanism and a telescopic rod body.

[0040] It should be noted that when grinding various grinding samples, the cleaning task can be performed after each sample is ground, so that the dust generated by the grinding sample and the cleaning after grinding does not occur at the same time, which can ensure that the dust generated by the cleaning does not pollute the sample.

[0041] It can be understood that the surface of the grinding roller itself has good smoothness, and it is difficult to clean to the ideal effect by the conventional mechanical cleaning method. When the wool roller 1 is used for cleaning, the wool roller 1 closely contacts the grinding roller and rotates, and the softness and adsorption of the wool are used to adsorb and wipe off the dust, debris, grinding residues and other impurities on the surface of the grinding roller when the grinding roller rotates, so as to achieve the purpose of cleaning the grinding roller.

[0042] For example, please refer to Figure 2 , Figure 2 This is an exploded structural diagram of the grinding and cleaning device. The roller frame 2 includes a first end plate 21, a second end plate 22, and a connecting plate 23. The first end plate 21 is connected to one end of the wool roller 1; the second end plate 22 is connected to the other end of the wool roller 1, and the first end plate 21 and the second end plate 22 are arranged parallel to each other; one end of the connecting plate 23 is connected to the first end plate 21, and the other end is connected to the second end plate 22, and the connecting plate 23 is connected to the telescopic end of the telescopic mechanism 3. The first end plate 21, the second end plate 22, and the connecting plate 23 can form a U-shaped roller frame 2. The wool roller 1 is installed on this U-shaped structure to ensure that the wool roller 1 will not be displaced in the axial direction and will always maintain a precise working position. The connection method between the connecting plate 23 and the first end plate 21 and the second end plate 22 can be welding or bolt fastening, and no specific limitation is made here.

[0043] Furthermore, the connecting plate 23 is provided with a stepped structure for positioning the first end plate 21 and the second end plate 22, such as... Figure 2 As shown, the stepped structure is located at both ends of the connecting plate 23, at the points where it connects with the first end plate 21 and the second end plate 22. This allows the first end plate 21 and the second end plate 22 to be precisely embedded into the corresponding stepped positions when assembled with the connecting plate 23, effectively preventing displacement deviations in the planar direction. From an assembly process perspective, the stepped structure greatly simplifies the assembly process of the roller frame 2. During installation, workers only need to align the first end plate 21 and the second end plate 22 with the stepped structure according to the designed direction to achieve quick and accurate positioning. There is no need to repeatedly calibrate the position using complex measuring tools, ensuring that the distance between the first end plate 21 and the second end plate 22 is sufficient for assembling the wool roller 1. This stepped structure shortens the assembly time.

[0044] Please continue reading. Figure 2 The frame 6 is provided with a set of parallel guide grooves 7; the first end plate 21, the second end plate 22 and the connecting plate 23 have the same width so as to be installed in the guide grooves 7. The same width allows them to be installed as a whole in the guide grooves 7. When the roller frame 2 moves along the guide grooves 7, the components with uniform width can be evenly stressed, avoiding uneven local stress caused by inconsistent width, which could lead to jamming, vibration and other adverse phenomena. This ensures that the wool roller 1 moves smoothly and stably when it approaches or moves away from the grinding roller.

[0045] Exemplary, telescopic mechanism 3 includes a cylinder 31 and a push plate 32. Cylinder 31 is mounted on the frame 6, the cylinder 31 can be selected with a guide rod cylinder; push plate 32 is installed on the telescopic rod of the cylinder 31 away from the cylinder body, the length direction of the push plate 32 is perpendicular to the length direction of the telescopic rod, the vertical layout enables the push plate 32 to effectively convert the linear telescopic motion of the telescopic rod of the cylinder 31 into the transverse push-pull action of the roller frame 2, and control the roller frame 2 and the wool roller 1 to approach or away from the grinding roller. A plurality of mounting holes 33 are provided on the push plate 32, and the push plate 32 is connected to the roller frame 2 through the mounting holes 33. The mounting holes 33 can be through holes or threaded holes, and the two can be connected and fastened by bolts.

[0046] Further, the telescopic mechanism 3 further comprises a fixing member 34 and a gasket 35. The fixing member 34 is wrapped around the outer periphery of the cylinder 31 to fix the cylinder 31 to the frame 6, and the gasket 35 is installed between the fixing member 34 and the frame 6. The fixing member 34 can be a metal bent member, which can be made by bending a metal plate with a thickness of 2-5 mm into a fixing member 34, as shown in Figure 2 The fixing member 34 is U-shaped, with the bottom fixedly connected to the bottom of the cylinder 31, and the two bent portions connected to the frame 6. The frame 6 is rectangular in structure, and the two bent portions can be installed on the end plates of the frame 6 to fasten the cylinder 31. The gasket 35 can eliminate the gap between the frame 6 and the cylinder 31 to prevent dust from escaping from the gap.

[0047] Based on the same technical concept as the grinding and cleaning device, the utility model further provides an opposed roller grinding machine, each grinding roller of the opposed roller grinding machine is provided with any one of the grinding and cleaning devices.

[0048] Please refer to Figure 3 , Figure 3 is a structural schematic view of the opposed roller grinding machine. The opposed roller grinding machine is provided with a hopper 15, the hopper 15 is connected to the frame 6, and the hopper 15 is used for placing the material to be ground, which can be a soil sample for soil detection or other materials that need to be ground. A pair of grinding rollers are a first grinding roller 4 and a second grinding roller 5 arranged in parallel, and the two grinding rollers are driven by the gear 13 installed at the ends to rotate synchronously. One end of one of the grinding rollers is provided with a belt pulley 12, the belt pulley 12 is connected to a pre-set motor, and the belt pulley 12 is driven to rotate by the motor. The side surfaces of the two grinding rollers are provided with grinding and cleaning structures, such as Figures 1-2As shown in the figure, two grinding cleaning structures are mirror installed along the central axis of the pair roller grinder. Among them, the grinding cleaning structure of the first grinding roller 4 is installed on the first fixed plate 10, and the grinding cleaning structure of the second grinding roller 5 is installed on the second fixed plate 11. After the grinding of the material is completed, the two grinding rollers need to be cleaned. The control solenoid valve is opened, the compressed air drives the piston of the cylinder 31 to extend through the path of the solenoid valve, and the two wool rollers 1 are tightly attached to the corresponding grinding rollers, so that the cleaning of the grinding roller can be implemented. After the cleaning is completed, the piston of the cylinder 31 is retracted, and the wool roller 1 is retracted.

[0049] The first grinding roller 4 of the pair roller grinder is installed on the first group of installation plates 9 arranged in parallel, and the second grinding roller 5 of the pair roller grinder is installed on the second group of installation plates 8 arranged in parallel. The connection between the first group of installation plates 9 and the second group of installation plates 8 is provided as a stepped structure. As shown in the figure, Figure 2 As shown in the figure, the stepped structure increases the contact area of the connection of the two groups of installation plates. Compared with the plane connection, the stress can be dispersed more effectively. Especially during the grinding process, when the two grinding rollers are subjected to external forces such as material extrusion, the stepped structure can prevent deformation and other problems at the connection, and guarantee the structural integrity of the entire grinder. At the same time, the stepped structure also plays a certain regulating role on the gap between the two grinding rollers. Through the stepped structure, the relative position of the two grinding rollers can be limited, so that the grinding gap can meet the process requirements, so that precise grinding can be realized, and the product quality can be improved.

[0050] During the grinding of the material, a large amount of dust and debris will inevitably be generated. If not cleaned in time, these small particles are easy to accumulate inside the grinder. Based on this, in a specific embodiment, at least one air jet head 14 is installed on the pair roller grinder. The air jet head 14 is connected to a pre-set high-pressure gas source. The high-pressure gas source can be a specially equipped air compressor or a factory centralized gas supply system, so as to spray compressed air into the interior of the grinder. As shown in the figure, Figure 3 As shown in the figure, two air jet heads 14 can be installed on the pair roller grinder, located at the top of the contact position of the wool roller 1 and the grinding roller. The air jet head 14 has two functions: one is to remove the dust raised in the cavity, and the other is to blow the high-pressure gas to clean the grinding roller and the wool roller 1.

[0051] The technical scheme provided in the embodiment of the utility model has at least the following technical effects or advantages:

[0052] The grinding cleaning device comprises a wool roller, a roller frame and an extension mechanism, the wool roller is arranged in parallel with a grinding roller to be cleaned, the roller frame is connected with both ends of the wool roller, the extension mechanism is arranged on a rack on which the grinding roller is installed, and the extension mechanism is connected with the roller frame at an extension end, and the extension mechanism is used to drive the roller frame to move so that the wool roller is tightly attached to the grinding roller to clean the grinding roller when the cleaning task of the grinding roller is performed. The grinding cleaning device can clean the grinding roller in time after the grinding roller completes material grinding, prevents cross contamination in the grinding process of different types of samples, and the wool roller is a standard part which is easy to damage and convenient to purchase and replace, and therefore can be better applied to the roller grinder.

Claims

1. A grinding and cleaning device, characterized in that, The device includes: The wool roller is set parallel to the abrasive roller to be cleaned; A roller frame is connected to both ends of the wool roller; A telescopic mechanism is provided on the frame on which the grinding roller is mounted, and the telescopic end of the telescopic mechanism is connected to the roller frame; the telescopic mechanism is used to drive the roller frame to move when performing the cleaning task of the grinding roller, so that the wool roller is in close contact with the grinding roller for cleaning.

2. The grinding and cleaning device according to claim 1, characterized in that, The roller frame includes: The first end plate is connected to one end of the wool roller; The second end plate is connected to the other end of the wool roller, and the first end plate and the second end plate are arranged parallel to each other. A connecting plate, one end of which is connected to the first end plate and the other end of which is connected to the second end plate, and the connecting plate is connected to the telescopic end of the telescopic mechanism.

3. The grinding and cleaning device according to claim 2, characterized in that, The frame is provided with a set of parallel guide grooves; the first end plate, the second end plate and the connecting plate have the same width, so as to be installed in the guide grooves.

4. The grinding and cleaning device according to claim 2, characterized in that, The connecting plate is provided with a stepped structure for positioning the first end plate and the second end plate.

5. The grinding and cleaning device according to claim 1, characterized in that, The telescopic mechanism includes: Cylinder, mounted on the frame; A push plate is installed at the end of the telescopic rod of the cylinder away from the cylinder body. The length direction of the push plate is perpendicular to the length direction of the telescopic rod. The push plate is provided with mounting holes for connecting the roller frame.

6. The grinding and cleaning apparatus according to claim 5, characterized in that, The telescopic mechanism further includes: A fastener is installed around the outer periphery of the cylinder to securely mount the cylinder onto the frame.

7. The grinding and cleaning apparatus according to claim 6, characterized in that, The telescopic mechanism further includes: A gasket is installed between the fastener and the frame.

8. A double-roll grinding mill, characterized in that, Each grinding roller of the roller mill is provided with a grinding and cleaning device as described in any one of claims 1-7.

9. The roller mill according to claim 8, characterized in that, The first grinding roller of the double-roll mill is mounted on a first set of parallel mounting plates, and the second grinding roller of the double-roll mill is mounted on a second set of parallel mounting plates. The connection between the first set of mounting plates and the second set of mounting plates is configured as a stepped structure.

10. The roller mill according to claim 8, characterized in that, The roller mill is equipped with at least one jet nozzle, which is connected to a preset high-pressure air source to inject compressed air into the interior of the roller mill.

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