Dust removal device for masonry dry-mixed mortar production

Abstract

The invention relates to the technical field of dry-mixed mortar, in particular to a dust removal device for masonry dry-mixed mortar production, which comprises a mixing tank, transfer cavities are symmetrically formed in the inner wall of the mixing tank, and an inclined wind scooper correspondingly communicated with the transfer cavities is arranged in the mixing tank. The middle of the wind scooper is a narrow part, the inner diameter of the wind scooper is gradually increased from the narrow part to the two ends, the bottom of the transfer cavity is provided with an air duct composed of a plurality of channels which obliquely extend downwards and are communicated with each other, the bottom end of the air duct is communicated with a dust collector outside the mixing tank, and the inner wall of the mixing tank is internally provided with a collecting cavity corresponding to the obliquely downward channel. The lower side wall of the obliquely downward channel is provided with a discharging opening communicated with the collecting cavity. According to the dust removal device for masonry dry-mixed mortar production, air in the material mixing tank is driven by the air nozzles to move into the air duct, small-particle materials in the air are screened out, meanwhile, the air pressure in the material mixing tank is reduced, and follow-up materials can enter the dust removal device conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of dry-mix mortar, and in particular to a dust removal device for producing masonry dry-mix mortar. Background Art

[0002] Dry-mix mortar is a premixed dry-powder mortar, which means that professional manufacturers mix the main raw materials and auxiliary materials according to a professional formula to produce dry-powder mortar with better quality.

[0003] According to the publication (announcement) number CN113387657A, the publication (announcement) date is 2021-09-14, and a high-strength, crack-resistant masonry dry-mix mortar is disclosed, which is mainly made of the following raw materials in parts by weight: 780-860 parts of sand, 100-130 parts of cement, 40-60 parts of fly ash, 5-8 parts of cellulose ether, 0.3-0.5 parts of viscose fiber, 2-3 parts of water reducer, and 5-15 parts of anti-cracking agent; the anti-cracking agent is at least one of chitosan and styrene-butadiene rubber and an aliphatic hyperbranched polyester in a mass ratio of (2.5-5): (7-12). When in use, dry-mixed mortar is mixed with water in a certain proportion to form mortar, in which cellulose ether and viscose fiber are dispersed in the mortar. Both cellulose ether and the bonding fiber molecular chain contain a large number of hydroxyl groups, which have strong water retention and dehydration effects. In addition, during the mortar coagulation process, cellulose ether can also form a high-viscosity solution to form adhesion to sand, chitosan, styrene-butadiene rubber and aliphatic hyperbranched polyester. In addition, a three-dimensional gel system is formed between aliphatic hyperbranched polyester and cellulose ether, and chitosan and styrene-butadiene rubber play an anchoring role, which can lock a large amount of water and delay the hydration process of cement. Moreover, it is slowly released during the later drying process of the mortar, reducing capillary pressure, reducing internal stress, and reducing the self-shrinkage phenomenon after the mortar coagulates and hardens, greatly improving the anti-cracking performance.

[0004] In the prior art including the above-mentioned patents, during the production of dry-mixed mortar, cement, dried sand and various auxiliary materials are mainly fed into a mixing tank and stirred and mixed together in the mixing tank. During the mixing process, a variety of raw materials are continuously fed into the mixing tank, and these raw materials are in powder or small particles. When the raw materials are put into the mixing tank, they will carry a part of the air, and the raw materials at the rear will hinder the outflow of air, which will cause the air pressure in the mixing tank to become higher and higher, and even hinder the entry of the raw materials. If an open mixing tank is used, a large amount of small particles will rise when the raw materials are put in and stirred, which will seriously affect the air quality around the mixing tank and even endanger the health of the staff. Summary of the invention

[0005] The purpose of the present invention is to provide a dust removal device for producing masonry dry-mix mortar, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a dust removal device for the production of masonry dry-mix mortar, comprising a mixing tank, a transfer cavity is symmetrically opened in the inner wall of the mixing tank, an inclined air guide hood which is connected to the transfer cavity is arranged inside the mixing tank, the middle part of the air guide hood is a narrow part and its inner diameter gradually widens from the narrow part to both ends, an air duct composed of a plurality of channels extending obliquely downward and connected is arranged at the bottom of the transfer cavity, the bottom end of the air duct is connected to the dust collector outside the mixing tank, a collecting cavity corresponding to the oblique downward channel is opened in the inner wall of the mixing tank, a discharge port connected to the collecting cavity is opened on the lower side wall of the oblique downward channel, a mounting frame is arranged on the inner upper part of the mixing tank, and an air nozzle which is obliquely upward and extends to the narrow part of the air guide hood is arranged on the mounting frame.

[0007] Preferably, an air guide block is provided in the air duct, which is close to the discharge port and is used to guide the airflow away from the discharge port.

[0008] Preferably, the plurality of collecting chambers are interconnected, and a support plate is movably provided in the lowest collecting chamber, and the support plate is pressed and moved to a predetermined position to release the material in the collecting chamber.

[0009] Preferably, a feed channel and a first feed port and a second feed port corresponding to the two feed channels and connected to the interior of the mixing tank are symmetrically provided in the side wall of the mixing tank.

[0010] Preferably, a first shift plate for pushing materials in the first feed port and the second feed port is movably provided on the mounting frame, and a movable sheet for carrying materials is hinged on the first shift plate.

[0011] Preferably, the middle portion of the movable sheet is hinged to the first dial plate, and the height of the first feed port is greater than the height of the second feed port so that the movable sheet in the second feed port can rotate relative to the first dial plate.

[0012] Preferably, the mounting frame is provided with a second dial plate below the first dial plate, and the movable sheet rotates to cover a gap between the second dial plate and the first dial plate.

[0013] Preferably, the bottom space inside the mixing tank is truncated cone-shaped, and the mounting frame is provided with a plurality of stirring blades that fit the inner wall of the truncated cone-shaped space.

[0014] Preferably, a spiral feeding roller is rotatably provided in each of the two feeding channels, and a movable plate for changing the diameter of the feeding channel is movably provided at the bottom of the feeding channel.

[0015] Preferably, the spiral feed pipe rotates with the first shift plate and the transmission ratio is adjustable as the support plate moves.

[0016] In the above technical scheme, a dust removal device for the production of dry-mixed mortar for masonry provided by the present invention has the following beneficial effects: when mixing is carried out in the mixing tank, a large amount of small particles of material rise inside the mixing tank, and at this time the air pump supplies air to the air nozzle, and the air nozzle sprays a high-speed airflow at the narrow part of the air guide cover, and the high-speed airflow forms a negative pressure behind the air nozzle, attracting the air near the bottom end of the air guide cover, and the inner diameter of the air guide cover gradually widens from the narrow part to the two ends, and the bottom end of the air guide cover has a larger diameter, which can guide more air to enter, and then take away more air, reduce the air pressure in the mixing tank, and facilitate the entry of materials. The larger diameter of the top end of the air guide cover can reduce the air flow speed, and thus reduce the speed of the airflow entering the transfer chamber. , reducing the ability of the airflow to carry small particles, and the airflow enters the wide transfer chamber, the speed further decreases, and then the airflow flows downward along the air duct, and in the process of the airflow flowing along the oblique downward channel, the airflow collides with the inner wall of the air duct, and the small particles in the airflow are separated from the airflow and enter the collecting chamber along the discharge port. Multiple collecting chambers collect the small particles in the air for easy reuse. Finally, the airflow leaves the mixing tank from the air outlet at the bottom of the air duct and enters the dust collector. The dust collector filters the airflow again to remove the particles in the airflow, which not only ensures that the internal air pressure of the closed mixing tank will not be too high to hinder the entry of materials, but also realizes the collection and reuse of the rising small particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the internal structure provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 A schematic diagram of the structure of an air duct provided in an embodiment of the present invention;

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 A schematic diagram of the structure of a mounting frame provided by an embodiment of the present invention;

[0024] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0025] Figure 8 for Figure 6 Enlarged view of point D in the middle;

[0026] Fig. 9 for Figure 6 Enlarged view of point E in the middle;

[0027] Fig.10 A schematic diagram of the structure of a first shift plate provided in an embodiment of the present invention;

[0028] Fig.11 A schematic diagram of the structure of a stirring blade provided in an embodiment of the present invention;

[0029] Fig.12 A schematic diagram of the structure of an active sheet provided by an embodiment of the present invention;

[0030] Fig.13 A schematic structural diagram of the first feed port provided in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Mixing tank; 11. Feed channel; 111. First feed port; 112. Second feed port; 113. Screw feed roller; 114. Movable plate; 115. Hand wheel; 116. Take-up reel; 117. First cable; 118. Lock block; 119. Push rod; 12. Mounting frame; 121. Mounting shaft; 122. First dial plate; 123. Second dial plate; 124. Stirring blade; 125. Movable sheet; 126. Transfer chamber ; 127, air guide block; 13, air nozzle; 131, air guide cover; 132, air duct; 133, locking rod; 134, air outlet; 135, feed port; 136, collecting chamber; 137, support plate; 138, sealing plate; 14, mounting plate; 141, movable block; 142, chain tooth; 143, push ring; 144, second cable; 145, transmission wheel; 146, tensioning rod; 147, gear ring; 148, third cable. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-13As shown, a dust removal device for producing masonry dry-mixed mortar comprises a mixing tank 1, a transfer chamber 126 is symmetrically provided in the inner wall of the mixing tank 1, an inclined wind guide hood 131 corresponding to and connected with the transfer chamber 126 is arranged inside the mixing tank 1, the middle part of the wind guide hood 131 is a narrow part and its inner diameter gradually widens from the narrow part to both ends, an air duct 132 composed of a plurality of obliquely downward extending and connected channels is arranged at the bottom of the transfer chamber 126, the bottom end of the air duct 132 is connected with a dust collector outside the mixing tank 1, a collecting chamber 136 corresponding to the oblique downward channel is provided in the inner wall of the mixing tank 1, a discharge port 135 connected with the collecting chamber 136 is provided on the lower side wall of the oblique downward channel, a mounting frame 12 is provided on the inner upper part of the mixing tank 1, and an air nozzle 13 obliquely upward and extending to the narrow part of the wind guide hood 131 is arranged on the mounting frame 12.

[0035] Specifically, the air nozzle 13 is connected to the air pump, the top of the mixing tank 1 is sealed, and a door panel is movably provided at the bottom discharge port. The inclination directions of two adjacent channels extending obliquely downward are opposite, and the bottom end of the air duct 132 is the air outlet 134.

[0036] In the above technical scheme, when the mixing tank 1 is mixing, a large amount of small particles of material rise inside the mixing tank 1. At this time, the air pump supplies air to the air nozzle 13, and the air nozzle 13 sprays a high-speed airflow at the narrow part of the air guide cover 131. The high-speed airflow forms a negative pressure behind the air nozzle 13, attracting the air near the bottom end of the air guide cover 131, and the inner diameter of the air guide cover 131 gradually widens from the narrow part to both ends. The bottom end of the air guide cover 131 has a larger diameter, which can guide more air to enter, and then take away more air, reduce the air pressure in the mixing tank 1, and facilitate the entry of materials. The larger diameter of the top end of the air guide cover 131 can reduce the air flow speed, thereby reducing the speed of the airflow entering the transfer chamber 126, and reducing the ability of the airflow to carry small particles. The airflow enters the wide transfer chamber 126, and its speed further decreases. Then the airflow flows downward along the air duct 132. In the process of the airflow flowing along the obliquely downward channel, the airflow collides with the inner wall of the air duct 132, and the small particles in the airflow are separated from the airflow and enter the collecting chamber 136 along the discharge port 135. The multiple collecting chambers 136 collect the small particles in the air for easy reuse. Finally, the airflow leaves the mixing tank 1 from the air outlet 134 at the bottom of the air duct 132 and enters the dust collector. The dust collector filters the airflow again to remove the particles in the airflow, which ensures that the internal air pressure of the closed mixing tank 1 will not be too high to hinder the entry of materials, and realizes the collection and reuse of the rising small particles.

[0037] As a further embodiment of the present invention, an air guide block 127 is provided in the air duct 132 , which is close to the discharge port 135 and is used to guide the airflow away from the discharge port 135 .

[0038] Specifically, the air guide block 127 is a triangular prism block fixedly installed inside the air duct 132 and close to the top of the discharge port 135 (the top is the upstream of the gas flow direction).

[0039] Furthermore, when the airflow flows along the air duct 132, it will collide with the air guide block 127 and flow along the inclined surface of the air guide block 127. Under the guidance of the air guide block 127, the airflow moves away from the discharge port 135 corresponding to the air guide block 127. In the process of the airflow colliding with the air guide block 127, the small particles in the airflow will be separated from the airflow due to the action of inertia, and moved along the other inclined surface of the air guide block 127 under the push of the subsequent airflow, gradually entering the discharge port 135, and entering the collection chamber 136 through the discharge port 135.

[0040] As another embodiment further provided by the present invention, a plurality of collecting chambers 136 are interconnected, and a support plate 137 is movably provided in the lowest collecting chamber 136 , and the support plate 137 is pressed and moved to a predetermined position to release the material in the collecting chamber 136 .

[0041] Specifically, the multiple collecting chambers 136 are commonly connected, and the materials therein are guided to the lowest collecting chamber 136 by building a slope into the collecting chamber 136 (this is the prior art and will not be described in detail). A sealing plate 138 for sealing the lowest collecting chamber 136 is hinged on the inner wall of the mixing tank 1, and a torsion spring is arranged between the sealing plate 138 and the mixing tank 1. A locking rod 133 is movably arranged in the inner wall of the mixing tank 1, and the first end of the locking rod 133 extends into the sealing plate 138 and is provided with a slope, and the second end of the locking rod 133 extends to the bottom of the support plate 137, and a spring is arranged between the locking rod 133 and the mixing tank 1, and the support plate 137 is arranged at an angle and rests on the inner wall of the sealing plate 138.

[0042] Furthermore, as the gas flows along the air duct 132, the small particles entrained by the gas gradually fall into the discharge port 135, and enter the collecting chamber 136 along the discharge port 135, and gradually gather in the collecting chamber 136 at the bottom. At this time, the small particles press the support plate 137 to move downward, and the support plate 137 pushes the locking rod 133 to move downward, and the locking rod 133 gradually moves away from the sealing plate 138 until the locking rod 133 separates from the sealing plate 138 and the sealing plate 138 is unlocked. At this time, the material on the support plate 137 rests on the inner wall of the sealing plate 138 under the action of gravity. , and pushes the sealing plate 138 to rotate, the lowest collecting chamber 136 is opened, and the small particles on the sealing plate 138 return to the mixing tank 1, then the spring pushes the locking rod 133 to move upward, and the locking rod 133 pushes the supporting plate 137 to move upward. At this time, the sealing plate 138 rotates under the action of the torsion spring and moves along the slope on the locking rod 133, pushing the locking rod 133 to move downward until the sealing plate 138 re-seals the lowest collecting chamber 136, and the locking rod 133 moves upward under the action of the spring, reinserts the sealing plate 138, and fixes the sealing plate 138, so that the collecting chamber 136 is re-closed.

[0043] As another embodiment further provided by the present invention, a side wall of the mixing tank 1 is symmetrically provided with a feed channel 11 and a first feed port 111 and a second feed port 112 corresponding to the two feed channels 11 and connected to the interior of the mixing tank 1 .

[0044] Specifically, the upper part of the internal space of the mixing tank 1 is square to increase the wall thickness of the mixing tank 1, which is convenient for the built-in air duct and the feed channel 11, and the first feed port 111 and the second feed port 112 are distributed on the inner walls on the opposite sides of the upper part of the mixing tank 1, so that the materials fed by the two feed channels 11 can enter the mixing tank 1 through the first feed port 111 and the second feed port 112, and the first feed port 111, the second feed port 112 and the space therebetween form a cylindrical cavity.

[0045] As another embodiment further provided by the present invention, a first shift plate 122 for pushing materials in the first feed port 111 and the second feed port 112 is movably provided on the mounting frame 12, and a movable sheet 125 for carrying materials is hinged on the first shift plate 122.

[0046] Specifically, a motor and a dust cover for protecting the motor are arranged on the mounting frame 12 , a downwardly extending mounting shaft 121 is arranged on the output end of the motor, a first shifting plate 122 is arranged on the mounting shaft 121 , and the number of the first shifting plates 122 is two.

[0047] Furthermore, the mixing work mainly involves mixing cement with dried sand. When the mixing work is performed, the cement and the dried sand are respectively put into the two feeding channels 11, and the cement enters the first feeding port 111 from the feeding channel 11, and the sand enters the second feeding port 112 from the feeding channel 11. At this time, the motor drives the two first paddles 122 to rotate through the mounting shaft 121, and the two first paddles 122 push the cement and sand to move respectively. Since the cement particles are small and the particles are loosely connected, and the sand particles are large and have a higher density, during the mixing process, the sand can easily move downward and accumulate at the bottom of the mixing tank 1, resulting in uneven distribution of the raw materials. To avoid the above situation, when the first paddle 122 moves to the second feeding port 112, the movable sheet 125 thereon will rotate to form a temporary hopper, which can allow some sand to stay on it for a long time, while the first paddle on the opposite side pushes the cement to be discharged smoothly, so that the cement falls a sufficient distance to compensate for the downward movement of the sand in the mixture.

[0048] As another embodiment further provided by the present invention, the middle portion of the movable sheet 125 is hinged on the first dial plate 122 , and the height of the first feed port 111 is greater than the height of the second feed port 112 so that the movable sheet 125 in the second feed port 112 can rotate relative to the first dial plate 122 .

[0049] Specifically, a torsion spring is disposed between the movable sheet 125 and the first shifting plate 122 .

[0050] Furthermore, during the process of the first dial plate 122 rotating with the mounting shaft 121, the first dial plate 122 gradually enters the first feed inlet 111. At this time, the height of the first feed inlet 111 is relatively large, and the movable sheet 125 is closely attached to the corresponding first dial plate 122. At this time, the top of the first dial plate 122 is attached to the upper wall of the first feed inlet 111, and the bottom edge of the movable sheet 125 is attached to the lower wall of the first feed inlet 111, so as to push out the material in the first feed inlet 111 as much as possible. When there is a second feed port 112, the height of the second feed port 112 is relatively small, so that the top of the first shift plate 122 is attached to the upper wall of the second feed port 112, and the lower part of the movable plate 125 is shifted by the lower wall of the second feed port 112, so that the movable plate 125 rotates relative to the first shift plate 122. The first shift plate 122 and the movable plate 125 form a temporary feed port, which can allow part of the sand in the second feed port 112 to stay on it for a period of time, thereby helping to distribute the cement and sand more evenly during the mixing process.

[0051] As another embodiment further provided by the present invention, a second dial plate 123 is disposed on the mounting frame 12 and is located below the first dial plate 122 , and the movable piece 125 rotates to cover the gap between the second dial plate 123 and the first dial plate 122 .

[0052] Specifically, the second dial plates 123 are fixedly mounted on the mounting shaft 121 , and two of the second dial plates 123 correspond to two of the first dial plates 122 , respectively, and an angle between a first dial plate 122 and the corresponding first dial plate 122 is very small.

[0053] Furthermore, during the mixing operation, one of the first paddles 122 enters the first feed port 111 and pushes the cement therein to move. At this time, the movable sheet 125 is tightly attached to the first paddle 122. There is a gap between the bottom of the movable sheet 125 and the second paddle 123. The first paddle 122 and the movable sheet 125 push the cement to fall from the gap into the cavity behind the corresponding second paddle 123. The second paddle 123 behind the second paddle 123 pushes the existing material in the mixing tank 1 to cover the cement that has just fallen, thereby reducing the cement. The small particles of material rise due to the falling, thereby reducing the loss of material, and another first plate 122 enters the second feed port 112. The movable sheet 125 on the first plate 122 is in a horizontal state, sealing the gap between the first plate 122 and the corresponding second plate 123. At this time, the sand in the second feed port 112 can only fall onto the material in front of the second plate 123, so that the sand just put in is in a relatively upper position inside the mixing tank 1, thereby compensating for the downward movement of the sand during the mixing process and ensuring uniform distribution of the material.

[0054] As another embodiment further provided by the present invention, the bottom space inside the mixing tank 1 is in a truncated cone shape, and the mounting frame 12 is provided with a plurality of stirring blades 124 that are attached to the inner wall of the truncated cone-shaped space.

[0055] Specifically, the stirring blade 124 is fixedly installed on the installation shaft 121 in an inclined manner.

[0056] Furthermore, when mixing, the installation shaft 121 drives the stirring blade 124 to rotate, and the stirring blade 124 stirs the material in the truncated cone space, and the inclined stirring blade 124 pushes the material to move upward continuously, and the material falls under the action of gravity, so that the material is exchanged up and down, and the material is evenly distributed. When the materials in the mixing tank 1 are mixed, the door panel at the bottom of the mixing tank 1 is opened, and the truncated cone space at the bottom of the mixing tank 1 becomes a funnel, and the materials in the mixing tank 1 move along the hole to the outside of the mixing tank 1. At the same time, the installation shaft 121 drives the stirring blade 124 to move to avoid bridging of the materials at the discharge port at the bottom of the mixing tank 1.

[0057] As another embodiment further provided by the present invention, spiral feeding rollers 113 are rotatably provided in both feeding channels 11, and a movable plate 114 for changing the diameter of the feeding channel is movably provided at the bottom of the feeding channel 11.

[0058] Specifically, a spring is provided between the movable plate 114 and the mixing tank 1, a take-up disk 116 is rotatably provided in the mixing tank 1, a first cable 117 is provided between the take-up disk 116 and the two movable plates 114, a handwheel 115 extending to the outside of the mixing tank 1 is provided on the take-up disk 116, a locking block 118 for locking it on the mixing tank 1 is slidably provided on the take-up disk 116, a spring is provided between the locking block 118 and the take-up disk 116, locking grooves distributed in a circular array and adapted to the locking block 118 are provided in the mixing tank 1, a push rod 119 for driving the locking block 118 to move is provided on the handwheel 115, a third cable 148 is provided between the push rod 119 and the locking block 118, and an identification for indicating the position of the locking block 118 is provided on the handwheel 115.

[0059] Furthermore, when mixing, the diameter of the discharge channel of the feed channel 11 is adjusted according to the ratio of cement to sand, and the push rod 119 is pressed. The push rod 119 drives the locking block 118 to move through the third cable 148, so that the locking block 118 is retracted into the take-up drum 116. At this time, the hand wheel 115 can be turned to drive the take-up drum 116 to rotate. The take-up drum 116 reels in the first cable 117 and drives the movable plate 114 to move toward the center of the feed channel 11, so that the diameter of the discharge channel is reduced, and the movable plate 114 is spaced from the mixing tank 11. The spring accumulates elastic potential energy. After the adjustment is completed, the push rod 119 is released, and the locking block 118 is reinserted into the locking groove on the mixing tank 1 under the push of the spring, thereby locking the take-up reel 116 on the mixing tank 1. At this time, the movable plate 114 limits the diameter of the discharge channel at the bottom of the feed channel 11, thereby limiting the discharge amount, and the spiral feed rollers 113 in the two feed channels 11 rotate at the same speed. The discharge amount of the two feed channels 11 is limited by changing the ratio of the diameters of the discharge channels, thereby allowing cement and sand to enter the mixing tank 1 in proportion.

[0060] As another embodiment further provided by the present invention, the spiral feed pipe rotates with the first shift plate 122 and the transmission ratio is adjustable as the support plate 137 moves.

[0061] Specifically, a mounting plate 14 is fixedly mounted on the mounting shaft 121, and a plurality of movable blocks 141 distributed in a circumferential array are slidably arranged on the mounting plate 14, and two sprockets 142 are symmetrically arranged on the movable block 141, and the two sprockets 142 on the plurality of movable blocks 141 form two sprocket wheels, and a spring is arranged between the movable block 141 and the mounting plate 14, and a push ring 143 for resisting the movement of the movable block 141 is slidably arranged in the mounting frame 12, and the outer wall of the push ring 143 is a frustum and extends into the mounting plate 14 and is in contact with the movable block 141. Block 141 is abutted, a spring is arranged between the push ring 143 and the mounting frame 12, a gear ring 147 is arranged on each of the two spiral feed rollers 113, a transmission wheel 145 meshing with the gear ring 147 is arranged in the mounting frame 12, chains are arranged between the two transmission wheels 145 and the two sprocket wheels respectively, a tensioning rod 146 for tensioning the chain is symmetrically slidably arranged on the mounting frame 12, a spring is arranged between the tensioning rod 146 and the mounting frame 12, and a second cable 144 is arranged between the two support plates 137 and the push ring 143.

[0062] Furthermore, when the mixing operation is performed, the motor output torque drives the mounting shaft 121 to rotate, the mounting shaft 121 drives the mounting plate 14 to rotate, the movable block 141 on the mounting plate 14 drives the chain to move through the sprocket 142, and drives the transmission wheel 145 to rotate through the chain, and the transmission wheel 145 drives the spiral feed roller 113 to rotate and discharge the material through the gear ring 147. At this time, the small particles in the mixing tank 1 rise, and are brought into the air duct 132 by the air flow ejected from the air nozzle 13, and gradually converge on the support plate 137 in the lowest collecting chamber 136, and press the support plate 137 to move; when a large amount of small particles rise in the mixing tank 1, it is necessary to reduce the feed rate. Speed, to avoid material waste caused by the rising of a large number of small particles. At this time, a large number of small particles are accumulated on the support plate 137, and the support plate 137 drives the push ring 143 to move downward through the second cable 144, and the push ring 143 moves away from the mounting plate 14, and the push ring 143 is separated from the movable block 141, and the movable block 141 moves toward the center of the mounting plate 14, reducing the diameter of the sprocket composed of the sprocket teeth 142 on the multiple movable blocks 141, thereby reducing the transmission ratio between the mounting shaft 121 and the spiral feed roller 113, reducing the feeding speed, and gradually calming the small particles rising in the mixing tank 1, and the tensioning rod 146 moves under the action of the spring to tighten the chain.

[0063] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dust removal device for masonry dry-mix mortar production, characterized in that: The invention comprises a mixing tank (1), wherein a transfer cavity (126) is symmetrically provided in the inner wall of the mixing tank (1), and an inclined wind guide cover (131) corresponding to and connected to the transfer cavity (126) is provided inside the mixing tank (1), wherein the middle part of the wind guide cover (131) is a narrow part and the inner diameter thereof gradually widens from the narrow part to both ends, and an air duct (132) composed of a plurality of obliquely downwardly extending and connected channels is provided at the bottom of the transfer cavity (126), and the air duct (132) ) is connected to the dust collector outside the mixing tank (1), a collecting chamber (136) corresponding to the oblique downward channel is provided in the inner wall of the mixing tank (1), a discharge port (135) connected to the collecting chamber (136) is provided on the lower side wall of the oblique downward channel, a mounting frame (12) is provided on the inner upper part of the mixing tank (1), and an air nozzle (13) is provided on the mounting frame (12) obliquely upward and extending to the narrow part of the air guide cover (131).

2. A dust removal device for producing masonry dry-mix mortar according to claim 1, characterized in that: The air duct (132) is provided with an air guide block (127) which is in close contact with the material discharge opening (135) and is used to guide the air flow away from the material discharge opening (135).

3. A dust removal device for producing masonry dry-mix mortar according to claim 1, characterized in that: The plurality of collecting chambers (136) are interconnected, and a support plate (137) is movably arranged in the lowest collecting chamber (136), and the support plate (137) is pressed and moved to a predetermined position to release the material in the collecting chamber (136).

4. A dust removal device for producing masonry dry-mix mortar according to claim 3, characterized in that: A feed channel (11) and a first feed port (111) and a second feed port (112) corresponding to the two feed channels (11) and connected to the interior of the mixing tank (1) are symmetrically provided in the side wall of the mixing tank (1).

5. A dust removal device for producing masonry dry-mix mortar according to claim 4, characterized in that: A first shift plate (122) for pushing materials in the first feed port (111) and the second feed port (112) is movably provided on the mounting frame (12), and a movable sheet (125) for carrying materials is hingedly connected to the first shift plate (122).

6. A dust removal device for producing masonry dry-mix mortar according to claim 5, characterized in that: The middle part of the movable sheet (125) is hinged on the first shift plate (122), and the height of the first feed port (111) is greater than the height of the second feed port (112) so that the movable sheet (125) in the second feed port (112) can rotate relative to the first shift plate (122).

7. A dust removal device for producing masonry dry-mix mortar according to claim 6, characterized in that: The mounting frame (12) is provided with a second dial plate (123) located below the first dial plate (122), and the movable plate (125) rotates to cover the gap between the second dial plate (123) and the first dial plate (122).

8. A dust removal device for producing masonry dry-mix mortar according to claim 1, characterized in that: The bottom space inside the mixing tank (1) is in the shape of a truncated cone, and the mounting frame (12) is provided with a plurality of stirring blades (124) that fit the inner wall of the truncated cone-shaped space.

9. A dust removal device for producing masonry dry-mix mortar according to claim 5, characterized in that: A spiral feeding roller (113) is rotatably arranged in each of the two feeding channels (11), and a movable plate (114) for changing the diameter of the feeding channel is movably arranged at the bottom of the feeding channel (11).

10. A dust removal device for producing masonry dry-mix mortar according to claim 9, characterized in that: The spiral material conveying pipe rotates with the first shifting plate (122), and the transmission ratio is adjustable as the supporting plate (137) moves.

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