Dry-mixed mortar raw material conveying device
The traditional screw conveying equipment is improved through the air flow conveying device, which solves the problem of structural damage of vitrified microbeads during the conveying process, and improves the insulation performance of dry-mixed mortar.
Patent Information
- Application Number
- CN202421037731.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-14
AI Technical Summary
Traditional spiral conveying equipment can easily lead to damage to the internal structure of the vitrified microbeads when transporting vitrified microbeads, thereby reducing the insulation performance of the dry-mixed mortar.
The airflow conveying device is used to transport the vitrified microbeads in the form of airflow to the mixer through the airflow conveying pipeline between the low-position silo and the high-position tano tank, reducing the risk of extrusion of the vitrified microbeads during the conveying process.
It effectively protects the internal structure of vitrified microbeads, improves the insulation performance of dry-mixed mortar, and improves product quality.
Smart Images
Figure CN222450877U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of conveying equipment for dry-mixed mortar raw materials, and in particular to a conveying device for dry-mixed mortar raw materials. Background Art
[0002] Dry-mixed mortar, also known as dry-powdered mortar, is a kind of dry-powdered building material made by premixing solid materials such as cementitious materials, fine aggregates, admixtures and admixtures according to a certain ratio through a mixing process. Dry-mixed mortar is actually a prefabricated mortar in a dry powder state, which is transported to the construction site in bags or bulk and can be used directly after adding water. At present, there are mainly five types of mortars widely used in construction projects: one is masonry mortar, such as ordinary masonry mortar, special mortar for concrete blocks, thermal insulation masonry mortar, etc.; the second is plastering mortar, such as interior and exterior wall primer plastering, putty, color decorative mortar, thermal insulation mortar, etc.; the second is floor mortar, such as ordinary floor mortar, self-leveling mortar, etc.; the fourth is bonding mortar, such as tile adhesive caulking agent, special bonding mortar for thermal insulation system, etc.; the fifth is special mortar, such as repair mortar, waterproof mortar, hardening powder, etc.
[0003] In building energy conservation, in addition to using efficient heating equipment, the thermal insulation performance of the enclosure structure should also be considered to reduce building energy consumption. According to statistics, the heat lost by the building through the enclosure structure accounts for about three-quarters of the total heat loss, and the energy lost through the wall in the enclosure structure accounts for about half of the total heat loss. Therefore, the thermal insulation of the wall has become the focus of building energy conservation. Vitrified microsphere dry-mixed mortar uses the recently developed inorganic glassy lightweight aggregate, i.e., vitrified microspheres, as the main raw material, and is dry-mixed with cementitious materials and additives. It is a single-component dry-mixed mortar. In addition to having good thermal insulation performance, it also has excellent fire resistance, weather resistance, aging resistance, good workability, and convenient construction. It is called a new type of wall insulation dry-mixed mortar.
[0004] Vitrified microspheres are made of acidic glassy volcanic rocks with crystal water. They are produced through processes such as crushing, dehydration, puffing, and melt vitrification. The particles are irregular spheres with porous cavity structures inside and a glassy, closed, and smooth surface. The use of vitrified microspheres as one of the aggregates affects the volume density, compressive strength, flexural strength, and thermal conductivity of the dry-mixed mortar. As the amount of vitrified microspheres added increases, the volume density of the dry-mixed mortar decreases, the compressive strength and flexural strength decrease, and the thermal conductivity decreases. This increases the thermal insulation performance of the dry-mixed mortar with vitrified microspheres. However, due to the inherent properties of vitrified microspheres, which are porous inside and vitrified on the surface, the dry-mixed mortar with vitrified microspheres can easily change the properties of the vitrified microspheres themselves when using traditional processing equipment during production, so that the thermal insulation performance of the dry-mixed mortar does not meet the preset requirements. Specifically, traditional mortars usually use spiral conveying to convey aggregates. When using spiral conveying to convey vitrified microspheres, excessive squeezing of the vitrified microspheres is likely to occur, resulting in the destruction of the porous structure inside the vitrified microspheres. The destruction of the internal structure of the vitrified microspheres will reduce the thermal insulation performance of the dry-mixed mortar using the vitrified microspheres as one of the aggregates, thereby affecting the product quality. Therefore, there is room for improvement in the production equipment of dry-mixed mortars with vitrified microspheres. From the perspective of improving product quality, the probability of vitrified microspheres being squeezed during transportation before entering the mixer can be reduced, thereby maintaining the structure of the vitrified microspheres themselves and improving the product performance of the corresponding dry-mixed mortar. Summary of the invention
[0005] In view of the deficiencies in the prior art, the utility model provides a conveying device for conveying dry-mixed mortar raw materials of vitrified microspheres by changing the traditional spiral conveying method, so as to overcome the defects in the prior art.
[0006] The technical solution adopted by the utility model is: a conveying device for dry-mixed mortar raw materials, including a low-level material bin, a feeding port is arranged on the low-level material bin, a first glass bead conveying pipe is arranged below the low-level material bin, a first air lock is arranged between the first glass bead conveying pipe and the low-level material bin, a filter plate is arranged on the first glass bead conveying pipe, the outlet end of the first glass bead conveying pipe is connected to a high-level material tank, the top of the high-level material tank is provided with an inlet end of an induced draft pipe, and a high-level material tank between the induced draft pipe and the first glass bead conveying pipe is provided. A screening orifice plate, a first induced draft branch pipe is arranged on the induced draft main pipe, a suction pipe is arranged on the low-level material bin inside the feeding port, the suction pipe and the first induced draft branch pipe are connected through the second induced draft branch pipe, a bag dust collector and an induced draft fan are connected in sequence to the outlet end of the induced draft main pipe, an inlet end of a second air lock is arranged on the bottom end of the high-level material tank, an inlet end of a second glass bead conveying pipe is arranged on the outlet end of the second air lock, a weighing tank is arranged on the second glass bead conveying pipe, and a mixer is arranged on the outlet end of the second glass bead conveying pipe.
[0007] Preferably, a first one-way valve is provided on the first glass bead conveying pipe between the filter plate and the first air lock, a first regulating valve is provided on the second glass bead conveying pipe between the weighing tank and the mixer, a second regulating valve is provided on the first glass bead conveying pipe between the first air lock and the high-level material tank, a third regulating valve is provided on the first induced air branch pipe between the second induced air branch pipe and the induced air main pipe, and a fourth regulating valve is provided on the induced air main pipe between the first induced air branch pipe and the high-level material tank.
[0008] Preferably, the suction pipe is located on a low-level silo away from the feeding port, and the inner diameter of the end of the suction pipe close to the feeding port gradually increases as the suction pipe approaches the feeding port. Several suction pipes are used, and a second air branch pipe is installed between each suction pipe and the first air branch pipe.
[0009] Preferably, the low-level silo is provided with a guide bucket, and the number of the guide buckets is adopted. The guide buckets are evenly distributed in a straight line on the bottom of the low-level silo. A first air shut-off device is installed between each guide bucket and the first glass bead conveying pipe. The inscribed circle diameter of the guide bucket gradually decreases as the height of the guide bucket decreases.
[0010] Preferably, a return branch pipe is provided on the top of the screening orifice plate and the high-level material tank, the return branch pipe and the solid material outlet end of the bag-type dust collector are connected through a return main pipe, and the return main pipe is provided with a second one-way valve, a stop valve and a buffer tank in sequence along the direction from the return branch pipe to the bag-type dust collector, a first material level meter is provided in the buffer tank, the top of the buffer tank and the induced draft main pipe are connected through a third induced draft branch pipe, and a third one-way valve is provided on the third induced draft branch pipe.
[0011] Preferably, a second material level meter is provided in the high-level material tank below the screening orifice plate, and a third material level meter is provided in the high-level material tank between the second material level meter and the screening orifice plate.
[0012] Preferably, a sealing cover is provided on the inlet end of the first glass bead delivery tube, and a through hole is provided on the sealing cover, and the through hole penetrates the sealing cover along the direction from close to the first glass bead delivery tube to far away from the first glass bead delivery tube, and the through hole adopts a stepped hole structure, and the filter plate is installed in the through hole, and a pressure ring is provided on the side of the filter plate away from the first glass bead delivery tube, and fixing bolts are provided on the pressure ring, the filter plate and the sealing cover.
[0013] The beneficial effects of the utility model are as follows: firstly, the utility model changes the traditional spiral conveying mode of conveying vitrified microspheres by air flow conveying, thereby reducing the damage to the internal structure of the vitrified microspheres caused by extrusion during the conveying process before the vitrified microspheres enter the mixer, thereby reducing the thermal insulation performance of the dry-mixed mortar using the vitrified microspheres as one of the aggregates.
[0014] Secondly, the utility model provides a first material level meter in the buffer tank, and the installation of the first material level meter facilitates the feedback of the warning high material level height in the buffer tank.
[0015] Finally, a second material level meter is arranged in the high-level material tank below the screening orifice plate described in the utility model, and a third material level meter is arranged in the high-level material tank between the second material level meter and the screening orifice plate; the second material level meter is installed to facilitate feedback of the minimum material level height that should be maintained in the high-level material tank, and the third material level meter is installed to facilitate feedback of the maximum material level that can be stored in the high-level material tank.
[0016] The utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improved working efficiency, good social and economic benefits, and is a product that is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model.
[0018] Figure 2 for Figure 1 A partial enlarged schematic diagram of detail A.
[0019] Figure 3 for Figure 1 A partial enlarged schematic diagram of detail B.
[0020] Figure 4 for Figure 1 A partial enlarged schematic diagram of detail C.
[0021] Figure 5 It is a schematic diagram of the structure of the low-level material bin and the first glass bead conveying pipe of the utility model. DETAILED DESCRIPTION
[0022] like Figures 1 to 5As shown, a conveying device for dry-mixed mortar raw materials comprises a low-level silo 1, wherein the low-level silo 1 is provided with a feeding port 2, a first glass bead conveying pipe 3 is provided below the low-level silo 1, a first air lock 4 is provided between the first glass bead conveying pipe 3 and the low-level silo 1, a filter plate 5 is provided on the first glass bead conveying pipe 3, an outlet end of the first glass bead conveying pipe 3 is connected with a high-level material tank 6, an inlet end of an induced draft pipe 7 is provided at the top of the high-level material tank 6, a screening orifice plate 8 is provided in the high-level material tank 6 between the induced draft pipe 7 and the first glass bead conveying pipe 3, the screening orifice plate 8 comprises an orifice plate body and screening holes provided on the orifice plate body, and the shape of the orifice plate body and the part of the high-level material tank 6 The shape of the inner cavity is coordinated; a first induced draft branch pipe 9 is arranged on the induced draft main pipe 7, a suction pipe 10 is arranged on the low-level material bin 1 inside the feeding port 2, the suction pipe 10 and the first induced draft branch pipe 9 are connected through a second induced draft branch pipe 11, the outlet end of the induced draft main pipe 7 is connected with the air inlet of the bag-type dust collector 12 in sequence, the gas phase outlet of the bag-type dust collector 12 is connected with the air inlet end of the induced draft fan 13, the bottom end of the high-level material tank 6 is provided with the inlet end of the second air lock 14, the outlet end of the second air lock 14 is provided with the inlet end of the second glass bead conveying pipe 15, the second glass bead conveying pipe 15 is provided with a weighing tank 16, and the outlet end of the second glass bead conveying pipe 15 is provided with a mixer 17.
[0023] A first one-way valve 18 is provided on the first glass bead conveying pipe 3 between the filter plate 5 and the first air lock 4, so as to reduce the leakage of the glass beads conveyed to the first glass bead conveying pipe 3 through the low-level material bin 1 from the end of the first glass bead conveying pipe 3 close to the filter plate 5 to the outside; a first regulating valve 19 is provided on the second glass bead conveying pipe 15 between the weighing tank 16 and the mixer 17, a second regulating valve 20 is provided on the first glass bead conveying pipe 3 between the first air lock 4 and the high-level material tank 6, a third regulating valve 21 is provided on the first induced air branch pipe 9 between the second induced air branch pipe 11 and the induced air main pipe 7, and a fourth regulating valve 22 is provided on the induced air main pipe 7 between the first induced air branch pipe 9 and the high-level material tank 6.
[0024] The suction pipe 10 is located on the low-level silo 1 away from the feeding port 2. The inner diameter of the suction pipe 10 at the end close to the feeding port 2 gradually increases as the suction pipe 10 gradually approaches the feeding port 2. The number of suction pipes 10 is several, and a second air induced branch pipe 11 is installed between each suction pipe 10 and the first air induced branch pipe 9. The low-level silo 1 described in 4 is provided with a guide bucket 23. The number of guide buckets 23 is several, and the several guide buckets 23 are uniformly distributed in a straight line on the bottom end of the low-level silo 1. A first air lock 4 is installed between each guide bucket 23 and the first glass bead conveying pipe 3, and the diameter of the inscribed circle of the guide bucket 23 gradually decreases as the height of the guide bucket 23 decreases. A return branch pipe 24 is provided on the top of the screening orifice plate 8 and the high-level material tank 6. The return branch pipe 24 and the solid material outlet end of the bag dust collector 12 are connected through a return main pipe 25. The return main pipe 25 is provided with a second one-way valve 26, a stop valve 27 and a buffer tank 28 in sequence along the direction from the return branch pipe 24 to the bag dust collector 12. A first material level meter 29 is provided in the buffer tank 28. The top of the buffer tank 28 and the induced draft main pipe 7 are connected through a third induced draft branch pipe 30. A third one-way valve 31 is provided on the third induced draft branch pipe 30. A second material level meter 32 is provided in the high-level material tank 6 below the screening orifice plate 8, and a third material level meter 33 is provided in the high-level material tank 6 between the second material level meter 32 and the screening orifice plate 8.
[0025] The bag filter 12 is located above the buffer tank 28, which is located above the high-level material tank 6, which is located above the mixer 17. A cover 34 is provided on the inlet end of the first glass bead delivery pipe 3. The cover 34 adopts a box-shaped structure with one side open. The shape of the inner cavity of the cover 34 matches the shape of the first glass bead delivery pipe 3. The cover 34 and the first glass bead delivery pipe 3 are threadedly connected. A through hole 35 is provided on the cover 34. The shape of the cover 34 matches the shape of the through hole 35. The through hole 35 penetrates the cover 34 from the direction close to the first glass bead delivery pipe 3 to the direction away from the first glass bead delivery pipe 3. The through hole 35 adopts a stepped hole structure. The filter plate 5 is installed in the through hole 35. A pressure ring 36 is provided on the side of the filter plate 5 away from the first glass bead delivery pipe 3. The pressure ring 36, the filter plate 5 and the cover 34 are provided with fixing bolts 37; the filter plate 5 is installed to reduce the amount of debris that is transported to the first glass bead delivery pipe 3 along with the airflow.
[0026] The usage of this product is as follows: Figures 1 to 5 As shown, the following steps are included:
[0027] S1. Use a conveying tool to convey the vitrified microbeads in the raw material warehouse to the low-level silo 1 through the feeding port 2. During this process, the induced draft fan 13 is in working condition. The outside air passes through the feeding port 2 and then passes through the suction pipe 10, the second induced draft branch pipe 11, the first induced draft branch pipe 9, the induced draft main pipe 7, the bag-type dust collector 12 and the induced draft fan 13 in sequence to form a first airflow. The dust caused by being conveyed to the low-level silo 1 through the feeding port 2 is conveyed to the bag-type dust collector 12 together with the first airflow for gas-solid separation, and the gas phase is discharged to the outside through the induced draft fan 13.
[0028] S2. Through on-site observation by staff, after the material level in the low-level silo 1 reaches the preset range, the vitrified microbeads temporarily stored in the low-level silo 1 are transported to the first glass bead conveying pipe 3 through a plurality of guide buckets 23 by opening a plurality of first air locks 4 and adjusting the opening of the second regulating valve 20. After being filtered by the filter plate 5, the vitrified microbeads are sequentially passed through the first glass bead conveying pipe 3, the high-level material tank 6, the induced draft main pipe 7, the bag filter 12 and the induced draft fan 13 to form a second airflow. The second airflow drives the vitrified microbeads entering the first glass bead conveying pipe 3 to be transported to the high-level material tank 6, and the first gas-solid separation is performed through the screening orifice plate 8. Afterwards, the second airflow carrying a small amount of glass beads enters the induced draft main pipe 7 and is transported to the bag-type dust collector 12 for a second gas-solid separation. The second airflow merges with the first airflow and is discharged outward through the air outlet of the induced draft fan 13. The glass beads temporarily stored in the high-level material tank 6 after the first gas-solid separation can be transported to the mixer 17 by their own gravity. The specific process includes transporting the glass beads in the high-level material tank 6 to the second glass bead transport pipe 15 through the second air lock 14. After the weighing tank 16 completes the weighing, the opening of the first regulating valve 19 is adjusted to complete the raw material transportation to the mixer 17.
[0029] S3, during the process of step S1 and step S2, the glass beads carried by the first airflow or the glass beads carried by the second airflow are transported from the solid phase outlet of the bag filter 12 to the return material main pipe 25, and the glass beads entering the return material main pipe 25 enter the buffer tank 28 for temporary storage. When the material level in the buffer tank 28 reaches the material level that can be fed back by the first material level meter 29, the stop valve 27 should be opened in time, and the glass beads stored in the buffer tank 28 are sequentially transported to the high-level material tank 6 through the return material main pipe 25 and the return material branch pipe 24. It is more preferred to carry out this process when the induced draft fan 13 is not working, so as to avoid excessive glass beads being transported to the bag filter 12 again along with the second airflow.
[0030] Through this embodiment, the traditional spiral conveying method of conveying vitrified microspheres is changed to air flow conveying method, thereby reducing the damage to the internal structure of the vitrified microspheres caused by squeezing during the conveying process before entering the mixer 17, thereby reducing the thermal insulation performance of the dry-mixed mortar using the vitrified microspheres as one of the aggregates.
[0031] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.
Claims
1. A conveying device for dry-mixed mortar raw materials, characterized in that: The invention comprises a low-level material bin (1), wherein the low-level material bin (1) is provided with a material feeding port (2), a first glass bead conveying pipe (3) is provided below the low-level material bin (1), a first air blocker (4) is provided between the first glass bead conveying pipe (3) and the low-level material bin (1), a filter plate (5) is provided on the first glass bead conveying pipe (3), the outlet end of the first glass bead conveying pipe (3) is connected to a high-level material tank (6), the top of the high-level material tank (6) is provided with an inlet end of an air induced draft pipe (7), a screening orifice plate (8) is provided in the high-level material tank (6) between the air induced draft pipe (7) and the first glass bead conveying pipe (3), and a first air induced draft pipe (7) is provided on the air induced draft pipe (7). The high-position material tank (6) is provided with an inlet end of a second air lock (14), an inlet end of a second glass bead conveying pipe (15) is provided on the outlet end of the second air lock (14), a weighing tank (16) is provided on the second glass bead conveying pipe (15), and a mixer (17) is provided on the outlet end of the second glass bead conveying pipe (15).
2. The conveying device for dry-mixed mortar raw materials according to claim 1, characterized in that: A first one-way valve (18) is provided on the first glass bead conveying pipe (3) between the filter plate (5) and the first air lock (4), a first regulating valve (19) is provided on the second glass bead conveying pipe (15) between the weighing tank (16) and the mixer (17), a second regulating valve (20) is provided on the first glass bead conveying pipe (3) between the first air lock (4) and the high-level material tank (6), a third regulating valve (21) is provided on the first induced air branch pipe (9) between the second induced air branch pipe (11) and the induced air main pipe (7), and a fourth regulating valve (22) is provided on the induced air main pipe (7) between the first induced air branch pipe (9) and the high-level material tank (6).
3. The conveying device for dry-mixed mortar raw materials according to claim 1, characterized in that: The suction pipe (10) is located on the low-level silo (1) at a side away from the feeding port (2), and the inner diameter of the end of the suction pipe (10) close to the feeding port (2) gradually increases as the suction pipe (10) gradually approaches the feeding port (2). The number of suction pipes (10) is several, and a second air induced branch pipe (11) is installed between each suction pipe (10) and the first air induced branch pipe (9).
4. The conveying device for dry-mixed mortar raw materials according to claim 1, characterized in that: The low-level silo (1) is provided with a guide bucket (23). The number of the guide buckets (23) is a plurality. The guide buckets (23) are evenly distributed in a straight line on the bottom of the low-level silo (1). A first air lock (4) is installed between each guide bucket (23) and the first glass bead conveying pipe (3). The diameter of the inscribed circle of the guide bucket (23) gradually decreases as the height of the guide bucket (23) decreases.
5. The conveying device for dry-mixed mortar raw materials according to claim 1, characterized in that: A return branch pipe (24) is provided on the top of the screening orifice plate (8) and the high-level material tank (6); the return branch pipe (24) and the solid material outlet end of the bag filter (12) are connected via a return main pipe (25); a second check valve (26), a stop valve (27) and a buffer tank (28) are provided in sequence on the return main pipe (25) in a direction from the return branch pipe (24) to the bag filter (12); a first material level meter (29) is provided in the buffer tank (28); the top of the buffer tank (28) and the induced draft main pipe (7) are connected via a third induced draft branch pipe (30); a third check valve (31) is provided on the third induced draft branch pipe (30).
6. The conveying device for dry-mixed mortar raw materials according to claim 1, characterized in that: A second material level meter (32) is arranged in the high-level material tank (6) below the screening orifice plate (8), and a third material level meter (33) is arranged in the high-level material tank (6) between the second material level meter (32) and the screening orifice plate (8).
7. The conveying device for dry-mixed mortar raw materials according to claim 1, characterized in that: A sealing cover (34) is provided on the inlet end of the first glass bead delivery tube (3), and a through hole (35) is provided on the sealing cover (34). The through hole (35) penetrates the sealing cover (34) from close to the first glass bead delivery tube (3) to far away from the first glass bead delivery tube (3), and the through hole (35) adopts a stepped hole structure. The filter plate (5) is installed in the through hole (35), and a pressure ring (36) is provided on the side of the filter plate (5) far away from the first glass bead delivery tube (3), and fixing bolts (37) are provided on the pressure ring (36), the filter plate (5) and the sealing cover (34).