Powder low-pressure conveying device for concrete production

Abstract

The utility model relates to the technical field of concrete production, in particular to a low-pressure powder conveying device for concrete production, which comprises a conveying pipe, a spiral conveying rod is rotatably mounted in the conveying pipe, and a first motor is fixedly mounted at one end of the conveying pipe. The driving end of the first motor penetrates through one end of the conveying pipe and extends into the conveying pipe to be fixedly connected with one end of a spiral conveying rod. According to the low-pressure powder conveying device for concrete production, the material guiding pipe, the external connecting pipe, the first fixing plate, the second fixing plate, an elastic telescopic hose, a rotary knob, a second motor, a threaded rod, a telescopic rod, a first fixing ring and a second fixing ring are used in cooperation, and the position and the inclination angle of the external connecting pipe are adjustable; the external connecting pipe at the feeding end can be conveniently and rapidly adjusted to the mounting position to be in butt joint with an external stock bin, and the position and the inclination angle of the external connecting pipe at the discharging end can be adjusted in the same mode.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete production, in particular to a low-pressure powder conveying device for concrete production. Background Art

[0002] Ordinary concrete refers to artificial stone made by mixing cement as the main cementitious material with water, sand, gravel, and chemical admixtures and mineral admixtures when necessary, in appropriate proportions, and after uniform mixing, compacting, forming, curing and hardening. Through low-pressure conveying technology, powdered raw materials (such as cement, limestone powder, etc.) can be efficiently and accurately conveyed from storage warehouses to concrete mixers or other places where they are needed. Its design takes into account the particle size and fluidity of the powder during the conveying process, ensuring that the quality and production efficiency of the concrete will not be affected by blockage or particle breakage during the conveying process.

[0003] The Chinese patent publication number is CN220975873U. It discloses a low-pressure powder delivery device for concrete production, which includes a silo and a delivery pipe. A screw delivery rod is rotatably arranged in the delivery pipe, and a lower hopper is arranged below the silo. The beneficial effects of the utility model are as follows: the agglomerated powder material guided out from the silo is cut by beating by the cooperation of the cutting mechanism and the power mechanism, so that the powder material entering the delivery pipe is in powder form or in a smaller agglomerate form, and a large volume of agglomerated powder material is prevented from entering the delivery pipe and causing delivery pressure on the screw delivery rod.

[0004] With respect to the above-mentioned related technologies, the device has some shortcomings. In actual use, the positions of the feed pipe and the discharge pipe are fixed, and the feed and discharge cannot be connected at multiple angles, resulting in limitations in responding to different user requirements. For example, when the on-site layout is limited or the conveying direction needs to be adjusted, it is difficult for the user to flexibly adjust the device position or the pipeline angle, thereby affecting the convenience and flexibility of use. Therefore, it is necessary to provide a low-pressure powder conveying device for concrete production to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a low-pressure powder conveying device for concrete production to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A low-pressure powder conveying device for concrete production, comprising:

[0008] A conveying pipe, wherein a spiral conveying rod is rotatably installed inside the conveying pipe, a first motor is fixedly installed at one end of the conveying pipe, and a driving end of the first motor passes through one end of the conveying pipe and extends to the inside of the conveying pipe and is fixedly connected to one end of the spiral conveying rod, and a material guide pipe is fixedly installed on one side of the top and one side of the bottom of the outer wall of the conveying pipe;

[0009] An elastic telescopic hose is provided at one end of the material guide pipe away from the conveying pipe, an external tube is provided at one end of the elastic telescopic hose away from the material guide pipe, a second fixing ring is fixedly installed on the outer wall of the material guide pipe, a first fixing ring is fixedly installed on the outer wall of the external tube, the second fixing ring is fixedly connected to a second fixing plate by bolts, and a first fixing plate is provided above the top of the second fixing plate;

[0010] A second motor is fixedly mounted on one side of the first fixing plate, and a driving end of the second motor passes through one side of the first fixing plate and extends to the other side of the first fixing plate and is fixedly connected to the first fixing ring, and an adjustment mechanism is provided between the bottom of the first fixing plate and the top of the second fixing plate.

[0011] Preferably, both ends of the elastic telescopic hose are fixedly installed with annular connectors, and a side of the annular connector away from the elastic telescopic hose is fixedly installed with an annular clamping plate, and the opposite ends of the material guide tube and the external tube are provided with annular clamping grooves, and the annular clamping grooves are adapted to the annular clamping plates, and the material guide tube and the external tube are fixedly connected to the annular clamping plates clamped in the annular grooves by bolts.

[0012] Preferably, the adjustment mechanism includes a threaded rod, and the threaded rod is rotatably mounted on the bottom of the first fixed plate, the top of the threaded rod passes through the bottom of the first fixed plate and extends above the top of the first fixed plate, a knob is fixedly mounted on the top of the threaded rod, and a plurality of telescopic rods are fixedly mounted between the bottom of the first fixed plate and the top of the second fixed plate.

[0013] Preferably, a thread groove matched with the threaded rod is provided on the top of the second fixing plate, and the second fixing plate is threadedly connected to the threaded rod through the thread groove provided on the top of the second fixing plate.

[0014] Preferably, a sealing gasket is bonded to the surface of the annular connector away from the elastic telescopic hose.

[0015] Preferably, a plurality of vertical anti-slip rubber strips are bonded to the outer wall of the knob.

[0016] Preferably, the elastic telescopic hose is made of polyurethane hose.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model uses a material guide tube, an external tube, a first fixing plate, a second fixing plate, an elastic telescopic hose, a knob, a second motor, a threaded rod, a telescopic rod, a first fixing ring and a second fixing ring in coordination. The position and the inclination angle of the external tube are adjustable, so that the external tube at the feed end can be quickly adjusted to the installation position for docking and installation with an external silo. The position and the inclination angle of the external tube at the discharge end can be adjusted in the same way, thereby realizing multi-angle connection of feeding and discharging, meeting the different usage requirements of users, and improving the convenience and flexibility of use.

[0019] 2. The utility model uses an annular connector, a sealing gasket and an annular clamping plate in combination. When the elastic telescopic hose is severely worn after long-term use, the bolts fixing the annular clamping plate can be directly removed, and then the annular clamping plate can be directly pulled out from the inside of the annular clamping grooves on the material guide pipe and the external pipe through the annular connector, thereby completing the removal of the elastic telescopic hose between the external pipe and the material guide pipe. The detachable design of the elastic telescopic hose makes it convenient to quickly replace the elastic telescopic hose when it is damaged, thereby improving the maintainability and service life of the equipment and reducing maintenance time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the connection structure between the external connecting pipe and the material guiding pipe in the utility model.

[0022] Figure 3 It is a schematic diagram of the connection structure between the elastic telescopic hose and the annular clamping plate in the utility model.

[0023] Figure 4 It is a bottom view structural diagram of the external pipe connection in the utility model.

[0024] In the figure: 1. conveying pipe; 2. spiral conveying rod; 3. first motor; 4. material guide pipe; 5. external pipe; 6. first fixed plate; 7. second fixed plate; 8. elastic telescopic hose; 9. knob; 10. second motor; 11. threaded rod; 12. telescopic rod; 13. first fixing ring; 14. second fixing ring; 15. annular connector; 16. sealing gasket; 17. annular clamping plate; 18. annular clamping groove. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-4 , an embodiment provided by the utility model:

[0030] A low-pressure powder conveying device for concrete production, comprising:

[0031] A conveying pipe 1, a spiral conveying rod 2 is rotatably installed inside the conveying pipe 1, a first motor 3 is fixedly installed at one end of the conveying pipe 1, and a driving end of the first motor 3 passes through one end of the conveying pipe 1 and extends to the inside of the conveying pipe 1 and is fixedly connected to one end of the spiral conveying rod 2, a material guide pipe 4 is fixedly installed on one side of the top and one side of the bottom of the outer wall of the conveying pipe 1, the first motor 3 drives the spiral conveying rod 2 to rotate, and the rotation of the spiral conveying rod 2 can directional convey the powder entering the conveying pipe 1;

[0032] An elastic telescopic hose 8 is provided at one end of the material guide pipe 4 away from the conveying pipe 1, and an external tube 5 is provided at one end of the elastic telescopic hose 8 away from the material guide pipe 4. A second fixing ring 14 is fixedly installed on the outer wall of the material guide pipe 4, and a first fixing ring 13 is fixedly installed on the outer wall of the external tube 5. The second fixing ring 14 is fixedly connected to a second fixing plate 7 by bolts, and a first fixing plate 6 is provided above the top of the second fixing plate 7;

[0033] A second motor 10 is fixedly mounted on one side of the first fixed plate 6, and a driving end of the second motor 10 passes through one side of the first fixed plate 6 and extends to the other side of the first fixed plate 6 to be fixedly connected to the first fixed ring 13, and an adjustment mechanism is provided between the bottom of the first fixed plate 6 and the top of the second fixed plate 7.

[0034] Annular connectors 15 are fixedly installed at both ends of the elastic telescopic hose 8, and an annular clamping plate 17 is fixedly installed on one side of the annular connector 15 away from the elastic telescopic hose 8. Annular clamping grooves 18 are provided at the opposite ends of the material guide tube 4 and the external tube 5, and the annular clamping grooves 18 are adapted to the annular clamping plate 17. The material guide tube 4 and the external tube 5 are fixedly connected to the annular clamping plate 17 clamped in the annular clamping groove 18 by bolts.

[0035] In one of the embodiments, the adjustment mechanism includes a threaded rod 11, and the threaded rod 11 is rotatably installed at the bottom of the first fixed plate 6, the top of the threaded rod 11 passes through the bottom of the first fixed plate 6 and extends to above the top of the first fixed plate 6, and a knob 9 is fixedly installed at the top of the threaded rod 11. A plurality of telescopic rods 12 are fixedly installed between the bottom of the first fixed plate 6 and the top of the second fixed plate 7, so as to facilitate the adjustment of the spacing between the external tube 5 and the material guide tube 4.

[0036] In one of the preferred embodiments, a threaded groove matching the threaded rod 11 is opened on the top of the second fixed plate 7, and the second fixed plate 7 is threadedly connected to the threaded rod 11 through the threaded groove opened on the top, thereby practicing the threaded transmission effect of the second fixed plate 7 and the threaded rod 11.

[0037] In one embodiment, a sealing gasket 16 is bonded to the surface of the annular connector 15 away from the elastic telescopic hose 8 to ensure the sealing effect of the connection between the elastic telescopic hose 8 and the external tube 5 and the material guide tube 4 .

[0038] In one of the preferred embodiments, a plurality of vertical anti-skid rubber strips are bonded to the outer wall of the knob 9, which effectively increases the friction of the knob 9 when it is hand-held, so that the operator can adjust the knob 9 more easily.

[0039] In one embodiment, the elastic telescopic hose 8 is made of polyurethane hose, which generally has excellent elasticity and recovery ability. The polyurethane material itself has high elastic recovery characteristics and can withstand pressure changes, temperature fluctuations and mechanical stress in the pipeline system to maintain the sealing and stability of the connection. It can maintain its shape and performance for a long time.

[0040] The working principle of the utility model is as follows: the electrical components appearing in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not repeated in the text. The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. When installing and using the conveying device, first fix the conveying pipe 1 at the specified position through the external mounting frame, and connect the external pipe 5 on the feed end to the discharge end of the external silo. The knob 9 can be turned, and the rotation of the knob 9 drives the threaded rod 11 to rotate. The threaded connection between the threaded rod 11 and the second fixed plate 7, and the limitation of the second fixed plate 7 by the telescopic rod 12, can change the distance between the first fixed plate 6 and the second fixed plate 7. The movement of the plate 6 will drive the external tube 5 to move through the cooperation of the second motor 10 and the first fixed ring 13, thereby adjusting the distance between the external tube 5 and the material guide tube 4. When the second motor 10 is controlled to start working, the driving end of the second motor 10 drives the first fixed ring 13 to rotate, and the rotation of the first fixed ring 13 drives the external tube 5 to rotate, so that the inclination angle of the external tube 5 can be changed. Through the adjustability of the position and the inclination angle of the external tube 5, it is convenient to quickly adjust the external tube 5 at the feed end to the installation position for docking and installation with the external silo. The position and inclination angle of the external tube 5 at the discharge end can be adjusted in the same way, realizing multi-angle connection of feeding and discharging, meeting the different usage requirements of users, and improving the convenience and flexibility of use.

[0041] After the position and angle adjustment of the external tube 5 is completed, the powder is transported between the guide tube 4 and the external tube 5 through the elastic telescopic hose 8. The elastic telescopic hose 8 ensures that after the external tube 5 is adjusted, the powder can be stably transported between the guide tube 4 and the external tube 5. After long-term use, when the elastic telescopic hose 8 is severely worn, the bolts fixing the annular clamping plate 17 can be directly removed, and then the annular clamping plate 17 can be directly pulled out from the inside of the annular clamping groove 18 on the guide tube 4 and the external tube 5 through the annular connecting piece 15, thus completing the disassembly of the elastic telescopic hose 8 between the external tube 5 and the guide tube 4. The detachable design of the elastic telescopic hose 8 makes it convenient to quickly replace the elastic telescopic hose 8 when it is damaged, thereby improving the maintainability and service life of the equipment and reducing maintenance time and cost.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A low-pressure powder conveying device for concrete production, characterized in that: It includes: A conveying pipe (1), wherein a spiral conveying rod (2) is rotatably mounted inside the conveying pipe (1), a first motor (3) is fixedly mounted on one end of the conveying pipe (1), and a driving end of the first motor (3) passes through one end of the conveying pipe (1) and extends to the inside of the conveying pipe (1) and is fixedly connected to one end of the spiral conveying rod (2), and a material guide pipe (4) is fixedly inserted and mounted on one side of the top and one side of the bottom of the outer wall of the conveying pipe (1); An elastic telescopic hose (8) is arranged at one end of the material guide pipe (4) away from the conveying pipe (1), an external tube (5) is arranged at one end of the elastic telescopic hose (8) away from the material guide pipe (4), a second fixing ring (14) is fixedly mounted on the outer wall of the material guide pipe (4), a first fixing ring (13) is fixedly mounted on the outer wall of the external tube (5), the second fixing ring (14) is fixedly connected to a second fixing plate (7) by bolts, and a first fixing plate (6) is arranged above the top of the second fixing plate (7); A second motor (10) is fixedly mounted on one side of the first fixing plate (6), and a driving end of the second motor (10) passes through one side of the first fixing plate (6) and extends to the other side of the first fixing plate (6) to be fixedly connected to a first fixing ring (13), and an adjustment mechanism is provided between the bottom of the first fixing plate (6) and the top of the second fixing plate (7).

2. A low-pressure powder conveying device for concrete production according to claim 1, characterized in that: Both ends of the elastic telescopic hose (8) are fixedly mounted with annular connectors (15); a side of the annular connector (15) away from the elastic telescopic hose (8) is fixedly mounted with an annular clamping plate (17); opposite ends of the material guide tube (4) and the external tube (5) are provided with annular clamping grooves (18), and the annular clamping grooves (18) are adapted to the annular clamping plate (17); the material guide tube (4) and the external tube (5) are fixedly connected to the annular clamping plate (17) clamped in the annular clamping grooves (18) by bolts.

3. A low-pressure powder conveying device for concrete production according to claim 1, characterized in that: The adjustment mechanism comprises a threaded rod (11), and the threaded rod (11) is rotatably mounted on the bottom of the first fixed plate (6), the top end of the threaded rod (11) passes through the bottom of the first fixed plate (6) and extends to above the top of the first fixed plate (6), a knob (9) is fixedly mounted on the top end of the threaded rod (11), and a plurality of telescopic rods (12) are fixedly mounted between the bottom of the first fixed plate (6) and the top of the second fixed plate (7).

4. A low-pressure powder conveying device for concrete production according to claim 3, characterized in that: A thread groove matched with the threaded rod (11) is provided on the top of the second fixing plate (7), and the second fixing plate (7) is threadedly connected to the threaded rod (11) via the thread groove provided on the top of the second fixing plate (7).

5. The low-pressure powder conveying device for concrete production according to claim 2, characterized in that: A sealing pad (16) is bonded to the surface of the annular connecting piece (15) away from the elastic telescopic hose (8).

6. A low-pressure powder conveying device for concrete production according to claim 3, characterized in that: A plurality of vertical anti-slip rubber strips are bonded to the outer wall of the knob (9).

7. A low-pressure powder conveying device for concrete production according to claim 1, characterized in that: The elastic telescopic hose (8) is made of a polyurethane hose.

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