Material blocking device for three-roll grinder

Abstract

The utility model relates to material grinding field discloses a kind of material blocking device for three-roll grinder, including the material blocking plate between slow roll and middle roll near both ends, for driving material blocking plate left and right reciprocating movement driving mechanism;Driving mechanism includes sleeve pipe shaft, linear bearing, connecting rod, crank and speed reducer motor, linear bearing is fixedly installed in the top of rack, sleeve pipe shaft is movably arranged in linear bearing, its head end is fixedly connected with support, tail end is hinged with connecting rod, the other end of connecting rod is hinged with crank, the other end of crank is fixed with the output shaft of speed reducer motor, speed reducer motor is fixedly installed on the side surface of rack by fixed seat.The utility model drives material blocking plate to make reciprocating motion in certain range by driving mechanism, makes the distribution state of material at the both ends of grinding roller constantly change in roller end, so that the material originally accumulated in edge is pushed to roller body near middle part to participate in grinding cycle, effectively avoid the situation that local material granularity is inconsistent.

Description

Technical Field

[0001] This utility model relates to the field of material grinding, and in particular to a material blocking device for a three-roll mill. Background Technology

[0002] A three-roll mill, also known simply as a three-roll mill, can be divided into two types: experimental three-roll mills and production three-roll mills. It is suitable for manufacturing pastes such as paints, inks, and pigments. The working principle of a three-roll mill is that the grinding effect is achieved through the mutual compression and friction at different speeds of the surfaces of three horizontal grinding rollers. It is the most effective grinding and dispersing equipment for high-viscosity materials.

[0003] Existing three-roll mills require a baffle plate to be fixed near both ends between the slow and middle rolls during the grinding process to prevent material from overflowing the roll surface. Currently, these baffle plates are fixed to the frame using brackets, which has the following drawbacks:

[0004] 1. For highly viscous materials, they tend to adhere to the baffles at both ends of the grinding roller and accumulate. It is necessary to manually scrape off the material adhering to the baffles and remove the accumulated material at regular intervals.

[0005] 2. The material accumulated at both ends of the grinding roller at the baffle plate is in a relatively static and compressed state for a long time, resulting in local over-grinding or under-grinding.

[0006] 3. The existing baffle plate's arc surface in contact with the grinding roller is prone to wear, affecting the sealing effect;

[0007] Based on this, this application provides a material blocking device for a three-roll mill that can effectively improve material accumulation and provide good sealing performance to solve the above problems. Utility Model Content

[0008] The present invention aims to solve the technical problems existing in the prior art. Therefore, the present invention provides a material blocking device for a three-roll mill that can effectively improve material accumulation and provide a good sealing effect.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] A material-stopping device for a three-roll mill is provided, comprising a material-stopping plate mounted near both ends between the slow roller and the middle roller via a bracket, and a drive mechanism for driving the material-stopping plate to reciprocate left and right; the drive mechanism includes a sleeve shaft, a linear bearing, a connecting rod, a crank, and a geared motor. The linear bearing is fixedly mounted on the top of the frame, the sleeve shaft is movably mounted inside the linear bearing, its head end is fixedly connected to the bracket, its tail end is hinged to the connecting rod, the other end of the connecting rod is hinged to the crank, the other end of the crank is fixedly connected to the output shaft of the geared motor, and the geared motor is fixedly mounted on the side of the frame via a fixed seat.

[0011] In some alternative embodiments, the bracket includes a fixing block fixedly connected to the baffle plate and a connecting rod vertically disposed on the top of the fixing block, the connecting rod being inserted into the sleeve shaft and fastened by a locking screw.

[0012] In some alternative embodiments, the side of the baffle plate facing the material is provided as an inwardly concave arc groove, and the two sides facing the material are provided as guide slopes connected to the arc groove.

[0013] In some optional embodiments, the arc surfaces on both sides of the baffle plate that contact the slow roller and the intermediate roller respectively are provided with at least one groove, and the groove is provided with a wear-resistant rubber strip, which protrudes from the arc surface by 0.2 to 1.5 mm.

[0014] In some alternative embodiments, the baffle plate is coated with a polytetrafluoroethylene coating on the side facing the material.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model can use a drive mechanism to drive the baffle plate to reciprocate along the length of the grinding roller within a certain range, so that the material at both ends of the grinding roller continuously changes the distribution state at the roller end, and the material that was originally piled up at the edge is pushed to the middle of the roller to participate in the grinding cycle, so that all the material can be more evenly subjected to the shearing and squeezing action between the three rollers, effectively avoiding the situation of inconsistent particle size of local material, and eliminating the need for manual scraping of the piled material.

[0017] 2. The arc surface of the baffle plate that contacts the grinding roller is provided with a groove, and a wear-resistant rubber strip is provided in the groove. This can prevent the baffle plate from wearing out and improve the sealing effect.

[0018] 3. The side of the baffle plate that contacts the material is coated with polytetrafluoroethylene, which has good anti-stick properties. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0020] Figure 1 This is an installation structure diagram of the material blocking device provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the baffle plate provided by this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1—Baffle plate, 1.1—Arc groove, 1.2—Guide inclined surface, 2—Bracket, 2.1—Fixing block, 2.2—Connecting rod, 3—Drive mechanism, 3.1—Sleeve shaft, 3.2—Linear bearing, 3.3—Connecting rod, 3.4—Crank, 3.5—Gear motor, 4—Fixed seat, 5—Locking screw, 6—

[0024] —Abrasion-resistant rubber strips. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "installation," "connection," and "linking" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] Example 1

[0031] As attached Figure 1As shown, this embodiment provides a material blocking device for a three-roll mill, including two material blocking plates 1 disposed between the slow roller and the middle roller near both ends, and a drive mechanism 3 for driving the material blocking plates to reciprocate left and right, wherein:

[0032] The baffle plate 1 is provided with a bracket 2. The bracket 2 includes a fixing block 2.1 fixedly connected to the baffle plate and a connecting rod 2.2 vertically disposed on the top of the fixing block. The connecting rod 2.2 is connected to the drive mechanism 3.

[0033] The drive mechanism 3 includes a sleeve shaft 3.1, a linear bearing 3.2, a connecting rod 3.3, a crank 3.4, and a geared motor 3.5. The linear bearing 3.2 is fixedly installed on the top of the frame. The sleeve shaft 3.1 is movably disposed within the linear bearing 3.2, with its head end fixedly connected to the bracket 2 and its tail end hinged to the connecting rod 3.3. The other end of the connecting rod 3.3 is hinged to the crank 3.4, and the other end of the crank 3.4 is fixedly connected to the output shaft of the geared motor 3.5. The geared motor 3.5 is fixedly installed on the side of the frame via a fixing seat 4. The working principle of the drive mechanism is as follows: the geared motor drives the crank seat to rotate in a circular motion, and the crank drives the sleeve shaft to move linearly within the linear bearing through the connecting rod. The sleeve shaft, connecting rod, and crank constitute a crank-slider mechanism.

[0034] In this embodiment, the drive mechanism drives the baffle plate to reciprocate within a certain range along the length of the grinding roller, so that the material at both ends of the grinding roller continuously changes its distribution at the roller ends. This pushes the material that was originally piled up at the edge to the middle of the roller to participate in the grinding cycle, so that all the material can be more evenly subjected to the shearing and squeezing action between the three rollers. This effectively avoids the situation of inconsistent particle size in some areas of the material, and there is no need to manually scrape away the piled-up material.

[0035] Preferred options are listed below. Figure 2 As shown, in this embodiment, the side of the baffle plate 1 facing the material is provided as an inwardly concave arc groove 1.1, and the two sides facing the material are provided as guide slopes 1.2 connected to the arc groove 1.1. The material adhering to the slow roller and the middle roller on the guide slope is guided to the inside of the baffle plate to prevent the material from accumulating at the ends of the two sides of the baffle plate.

[0036] Preferably, the side of the baffle plate 1 facing the material is coated with a polytetrafluoroethylene coating (not shown in the figure). The excellent anti-stick properties of this coating can effectively reduce the adhesion of the material.

[0037] Example 2

[0038] Based on Example 1, as shown in the appendix Figure 1 As shown, in this embodiment, the connecting rod 2.2 is inserted into the sleeve shaft 3.1 and secured by the locking screw 5 on the sleeve shaft. This design allows for quick adjustment of the length of the baffle extending out of the sleeve shaft, facilitating adjustment of the distance between the two baffles according to the amount of material.

[0039] Example 3

[0040] Based on Example 1 or Example 2, as shown in the appendix Figure 2 As shown, in this embodiment, at least one groove is provided on the arc surface of the baffle plate 1 on both sides, which respectively contacts the slow roller and the intermediate roller. Six wear-resistant rubber strips are provided in the grooves, and each wear-resistant rubber strip protrudes 0.2–1.5 mm from the arc surface. This design effectively prevents wear on the baffle plate and improves its sealing effect.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A material-blocking device for a three-roll mill, comprising material-blocking plates mounted near both ends between the slow roll and the middle roll via supports, characterized in that: It also includes a drive mechanism for driving the baffle plate to reciprocate left and right; The drive mechanism includes a sleeve shaft, a linear bearing, a connecting rod, a crank, and a geared motor. The linear bearing is fixedly installed on the top of the frame. The sleeve shaft is movably disposed inside the linear bearing, with its head end fixedly connected to a bracket and its tail end hinged to the connecting rod. The other end of the connecting rod is hinged to the crank, and the other end of the crank is fixedly connected to the output shaft of the geared motor. The geared motor is fixedly installed on the side of the frame via a fixed seat.

2. The material-blocking device for a three-roll mill according to claim 1, characterized in that: The bracket includes a fixing block fixedly connected to the baffle plate and a connecting rod vertically disposed on the top of the fixing block. The connecting rod is inserted into the sleeve shaft and fastened by a locking screw.

3. The material-blocking device for a three-roll mill according to claim 1, characterized in that: The side of the baffle plate facing the material is provided with an inwardly concave arc-shaped groove, and the two sides facing the material are provided with guide slopes connected to the arc-shaped groove.

4. The material-blocking device for a three-roll mill according to claim 1, characterized in that: The baffle plate has at least one groove on each of its two arc surfaces that contact the slow roller and the intermediate roller respectively. The groove contains a wear-resistant rubber strip that protrudes 0.2 to 1.5 mm from the arc surface.

5. The material-blocking device for a three-roll mill according to claim 1, characterized in that: The baffle plate is coated with polytetrafluoroethylene on the side facing the material.

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