CN105881739A - A multi-stage mixing concrete mixing device - Google Patents

Abstract

The invention discloses a multistage stirring type concrete stirring device which comprises a dry material feeding device, a multistage stirring device and a control device, wherein the dry material feeding device is positioned above the multistage stirring device, and the dry material feeding device and the multistage stirring device are electrically connected with the control device; the dry material feeding device comprises a cement conveying line, a sand conveying line and a broken stone conveying line, and cement, sand and broken stones enter the belt conveyor after being pneumatically conveyed by the dry material feeding device and are conveyed to the multistage stirring device by the belt conveyor. According to the invention, two sets of stirring tanks which are arranged up and down are adopted to stir the concrete, the concrete after twice stirring is fully stirred, all components are fully mixed, the fluidity of the concrete is improved, the defect that the concrete is easy to agglomerate and form in the conveying process is avoided, and the concrete stirring device is simple in structure and easy to operate.

Description

A multi-stage mixing concrete mixing device

Technical field:

The invention relates to the technical field of concrete production, in particular to a multi-stage stirring concrete mixing device.

Background technique:

Concrete is one of the most important contemporary civil engineering materials. It is an artificial stone made of cementing materials, aggregates and water prepared in a certain proportion, shaped by stirring and vibrating, and cured under certain conditions. Concrete mixing system is a commonly used equipment in construction. It mixes cement, gravel, sand and other aggregates with other admixtures, additives and water in a certain proportion and mixes them into concrete slurry before pouring them out and vibrating them to form and dry them. After that is the concrete member.

Usually, there is only one mixing drum on the mixer, and only one independent mixing chamber is set in the mixing drum, which can only complete the preparation of slurry or concrete in a single way. Due to the needs of the project, and the concrete has only been mixed once, there may be insufficient mixing, which is prone to defects such as agglomeration and poor fluidity.

Invention content:

The object of the present invention is to provide a multi-stage mixing concrete mixing device aiming at the deficiencies of the prior art.

To achieve the above object, technical solutions of the present invention are as follows:

A multi-stage mixing concrete mixing device, including a dry material feeding device, a multi-stage mixing device and a control device, the dry material feeding device is located above the multi-stage mixing device, and both the dry material feeding device and the multi-stage mixing device are connected to the The control device is electrically connected; wherein, the dry material feeding device includes a cement conveying line, a sand material conveying line and a crushed stone conveying line, and the cement, sand and crushed stone enter the conveyor belt conveyor after being pneumatically conveyed by the dry material feeding device, and It is transported to the multi-stage mixing device by the conveyor belt conveyor; the multi-stage mixing device is a two-stage mixing device, including a primary mixing tank and a secondary mixing tank. The primary mixing tank is located directly above the secondary mixing tank, and the upper part of the primary mixing tank passes through The first-level connecting flange is provided with a conical feeding funnel, which corresponds to the end of the conveyor belt conveyor, and a dust cover is arranged outside the conical feeding funnel, and the dust cover is opposite to the tail end of the conveyor belt conveyor and The conical feeding funnel is covered and dust-proof. The inside of the conical feeding funnel is welded with a magnetic screen. The connection between the conical feeding funnel and the primary mixing tank is provided with a first rotary valve. Beating mechanism, and its interior is equipped with a first-level spiral agitator and a first-level ultrasonic agitator; a second rotary valve is set between the first-level mixing tank and the second-level mixing tank, and a second-level electric beating mechanism is set outside the second-level mixing tank. And it is equipped with a secondary spiral agitator and a secondary ultrasonic agitator; the lower part of the secondary mixing tank is provided with a concrete outlet, and a screw discharger is provided at the concrete outlet, and the screw discharger is controlled by a motor fixed on the mounting base. Drive, the motor is connected with the control device through connecting wires; the screw discharger includes a screw shaft and a discharge rod located on the screw shaft, and the screw discharger is communicated with the conveying pipeline.

The multi-stage mixing device also includes a water supply assembly, the water supply assembly includes a water pump fixed on the mounting base, the water pump has a water delivery pipeline extending vertically upwards, the water delivery pipeline is respectively connected with the primary mixing tank and the secondary mixing tank, and the water supply pipeline is There are a first pressure gauge and a second pressure gauge, the first pressure gauge corresponds to the primary mixing tank, and the second pressure gauge corresponds to the secondary mixing tank; the side of the water pump is also connected to the water storage tank through the water storage pipeline, and the water storage pipeline is connected to the water storage tank. A water inlet valve is provided, and the water storage tank also has a first water outlet pipeline and a second water outlet pipeline, the first water outlet pipeline is connected with the primary mixing tank, the second water outlet pipeline is connected with the second A second water outlet valve is arranged on the water pipeline, and a first water outlet valve is arranged on the first water outlet pipeline.

The cement conveying line, the sand material conveying line and the crushed stone conveying line are respectively connected to the first buffer bin, the second buffer bin and the third buffer bin, and the outlets of the first buffer bin, the second buffer bin and the third buffer bin are equipped with electromagnetic There is a belt scale at the bottom of each electromagnetic control valve, and the electromagnetic control valve and the belt scale are electrically connected to the control device. The control device records the weighing data of the belt scale and performs cumulative calculation. The three belt scales store the preset Once the cumulative weight of the material weighed by the belt scale reaches the preset weight value, the control device controls the corresponding electromagnetic control valve to close and stop the supply of the corresponding material; the three belt scales The lower part of the machine is also equipped with a conveyor belt conveyor for receiving materials, and the conveyor belt conveyor transports the materials to the multi-stage mixing device.

The cement conveying line includes a cement receiving hopper, which is used to accept the cement transported by the transport vehicle. The lower part of the cement receiving hopper is provided with a first inclined belt conveyor, which transports the cement to the cement storage silo. The upper part of the storage bin is provided with a cement filter, the lower part of the cement storage bin is provided with a cement pneumatic conveying pipeline, and a first inspection robot is also arranged on the cement pneumatic conveying pipeline.

The sand material conveying line includes the sand material receiving hopper, which is used to accept the sand material transported by the transport vehicle. The lower part of the sand material receiving hopper is provided with a second inclined belt conveyor, which transports the sand material To the sand material storage bin, the upper part of the sand material storage bin is provided with a sand filter screen, the lower part of the sand material storage bin is provided with a sand material pneumatic conveying pipeline, and a second inspection robot is also arranged on the sand material pneumatic conveying pipeline.

The crushed stone conveying line includes a crushed stone receiving hopper, which is used to receive the crushed stones transported by the transport vehicle. The lower part of the crushed stone receiving hopper is equipped with a third inclined belt conveyor, and the third inclined belt conveyor conveys the crushed stones. To the gravel storage bin, the upper part of the gravel storage bin is provided with a gravel filter, the lower part of the gravel storage bin is provided with a crushed stone pneumatic conveying pipeline, and a third inspection robot is also installed on the crushed stone pneumatic conveying pipeline.

The first rotary valve and the second rotary valve have the same structure, both including a rotating shaft. The shaft is connected, and a pull handle is also fixed on the rotating shaft.

The first buffer bin, the second buffer bin and the third buffer bin are all provided with a high-level material level gauge and a low-level material level gauge, and both the high-level material level gauge and the low-level material level gauge are electrically connected to the control device.

The beneficial effect of the present invention is that: the present invention uses two sets of mixing tanks arranged up and down to mix the concrete, the concrete after two times of mixing is fully mixed, each component is fully mixed, the fluidity of the concrete is improved, and the concrete delivery process is avoided. The defect of agglomeration molding is that its structure is simple and easy to operate.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of dry material feeding device;

Fig. 3 is a structural schematic diagram of the first rotary valve.

detailed description:

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1-2, the multi-stage mixing concrete mixing device includes a dry material feeding device 4, a multi-stage mixing device and a control device, the dry material feeding device 4 is located above the multi-stage mixing device, and the dry material feeding device 4. The multi-stage stirring devices are all electrically connected to the control device; wherein, the dry material feeding device 4 includes a cement conveying line 41, a sand material conveying line 42 and a crushed stone conveying line 43, and the cement, sand and crushed stone are supplied through the dry material. After the pneumatic conveying of the material device 4, it enters the conveying belt conveyor 419, and is transported to the multistage mixing device by the conveying belt conveyor 419; The mixing tank 13 is located directly above the secondary mixing tank 21, and the upper part of the primary mixing tank 13 is provided with a conical feeding funnel 11 through the primary connecting flange, and the conical feeding funnel 11 corresponds to the end of the conveyor belt conveyor 419. The outside of the conical feed hopper 11 is provided with a dust cover, which covers the tail end of the conveyor belt conveyor 419 and the conical feed hopper 11 to prevent dust. The inside of the conical feed hopper 11 is welded with a magnetic screen. A first rotary valve 12 is provided at the joint between the feed funnel 11 and the first-stage stirring tank 13, and a first-stage electric beating mechanism is arranged on the outside of the first-stage stirring tank 13, and a first-stage spiral stirrer and a first-stage ultrasonic stirrer are arranged inside; A second rotary valve 22 is set between the primary stirring tank 13 and the secondary stirring tank 21. The secondary stirring tank 21 is equipped with a secondary electric beating mechanism on the outside, and a secondary spiral agitator and a secondary ultrasonic stirring mechanism are installed inside it. device; the bottom of the secondary mixing tank 21 is provided with a concrete outlet, and the concrete outlet is provided with a screw discharger 23, and the screw discharger 23 is driven by a motor 25 fixed on the mounting seat 26, and the motor 25 is connected to the control wire 24 Device connection; the screw discharger 23 includes a screw shaft and a discharge rod located on the screw shaft, and the screw discharger 23 communicates with the delivery pipeline 28 .

The multi-stage stirring device also includes a water supply assembly, and the water supply assembly includes a water pump 27 fixed on the mounting base 26. The water pump 27 has a water delivery pipeline extending vertically upwards, and the water delivery pipeline is connected with the primary mixing tank 13 and the secondary mixing tank 21 respectively. connected, the water supply pipeline is provided with a first pressure gauge 31 and a second pressure gauge 33, the first pressure gauge corresponds to the primary mixing tank 13, the second pressure gauge corresponds to the secondary mixing tank 21; the side of the water pump 27 also passes through the water storage pipe The road is connected with a water storage tank 36, the water storage pipeline is provided with a water inlet valve 37, the water storage tank 36 also has a first water outlet pipeline 32 and a second water outlet pipeline 34, and the first water outlet pipeline 32 is connected to the primary mixing tank 13 The second water outlet pipeline 34 communicates with the secondary mixing tank 21 , the second water outlet pipeline 34 is provided with a second water outlet valve 35 , and the first water outlet pipeline 32 is provided with a first water outlet valve.

The cement conveying line 41, the sand material conveying line 42 and the crushed stone conveying line 43 are respectively connected to the first buffer bin 415, the second buffer bin 416 and the third buffer bin 417, the first buffer bin 415, the second buffer bin 416 and the third buffer bin 415. The outlet of the lower part of the three buffer warehouses 417 is provided with an electromagnetic control valve 152, and a belt scale 418 is arranged at the bottom of each electromagnetic control valve 152. The electromagnetic control valve 152 and the belt scale are all electrically connected with the control device, and the control device records the weighing of the belt scale 418 The three belt scales 418 store the preset weight value and weigh the falling material. Once the weight of the material weighed by the belt scale 418 reaches the preset weight value, the control device controls the corresponding The solenoid control valve 152 is closed to stop the supply of corresponding materials; the lower part of the three belt scales 418 is also provided with a conveyor belt conveyor 419 for receiving materials, and the conveyor belt conveyor 419 transports the materials to the multi-stage mixing device.

The first buffer bin 415 , the second buffer bin 416 and the third buffer bin 417 are all provided with a high-level material level gauge 151 and a low-level material level gauge, and both the high-level material level gauge 151 and the low-level material level gauge are electrically connected to the control device.

The cement conveying line 41 includes a cement receiving hopper 411, which is used to accept the cement transported by the transport vehicle. The lower part of the cement receiving hopper 411 is provided with a first inclined belt conveyor, and the first inclined belt conveyor transports the cement to the cement conveyor. The storage bin 412 is provided with a cement filter screen on the upper part of the cement storage bin 412, and the cement pneumatic conveying pipeline 414 is arranged on the lower part of the cement storage bin 412, and the first inspection robot 413 is also arranged on the cement pneumatic conveying pipeline 414.

The sand conveying line 42 comprises a sand material receiving hopper, which is used to accept the sand material transported by the transport vehicle. The bottom of the sand material receiving hopper is provided with a second inclined belt conveyor, and the second inclined belt conveyor transports the sand material Transport to the sand storage bin, the upper part of the sand storage bin is provided with a sand filter, the lower part of the sand storage bin is provided with a sand pneumatic conveying pipeline, and a second inspection robot is also arranged on the sand pneumatic conveying pipeline.

The crushed stone conveying line 43 includes a crushed stone receiving hopper, which is used to accept the crushed stones transported by the transport vehicle. Convey to the crushed stone storage bin, the upper part of the crushed stone storage bin is provided with a gravel filter, the lower part of the crushed stone storage bin is provided with a crushed stone pneumatic conveying pipeline, and a third inspection robot is also installed on the crushed stone pneumatic conveying pipeline.

As shown in Figure 3, the first rotary valve and the second rotary valve have the same structure, both of which include a rotating shaft 124, a sleeve 123 is sleeved on the outside of the rotating shaft 124, a rotating rod 125 is connected to the lower part of the rotating shaft 124, and the end of the rotating rod 125 is fixed There is a valve plate 126, and the upper end of the rotating shaft 124 is connected with the output shaft of the drive motor 121, and a pulling handle 122 is also fixed on the rotating shaft 124.

The examples are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be listed in the claims of the present invention.

Claims (8)

1. a Multi-stage stirring formula concrete central mix plant, it is characterised in that: include that siccative supplies Material device (4), Multi-stage stirring device and control device, siccative feeding device (4) is positioned at The top of Multi-stage stirring device, siccative feeding device (4), Multi-stage stirring device all fill with control Put electrical connection；Wherein, siccative feeding device (4) includes that cement transportation line (41), sand material are defeated Line sending (42) and rubble pipeline (43), cement, sand material and rubble are through siccative feed Belt conveyer (419) is entered after the pneumatic conveying of device (4), and by belt conveyer (419) It is transported to Multi-stage stirring device；Multi-stage stirring device is two-stage agitating device, stirs including one-level Tank (13) and two grades of agitator tanks (21), one-level agitator tank (13) is positioned at two grades of agitator tanks (21) Surface, one-level agitator tank (13) top by one-level adpting flange be provided with taper feed Funnel (11), taper loading hopper (11) is the most corresponding with the end of belt conveyer (419), Taper loading hopper (11) is outside is provided with dust cover, and dust cover is to belt conveyer (419) Tail end and taper loading hopper (11) carry out hiding dust-proof, in taper loading hopper (11) Portion is welded with magnetic screen cloth, taper loading hopper (11) and one-level agitator tank (13) junction Being provided with the first changeover valve (12), it is electronic that one-level agitator tank (13) outside is provided with one-level Beater mechanism, and it is internally provided with one-level spiral agitator and one-level ultrasonic stirrer；One It is provided with the second changeover valve (22) between level agitator tank (13), two grades of agitator tanks (21), Two grades of agitator tank (21) outsides are provided with second-stage electric beater mechanism, and it is internally provided with two Level spiral agitator and two grades of ultrasonic stirrer；The bottom of two grades of agitator tanks (21) is provided with Concrete outlet, is provided with spiral discharging device (23), spiral discharging device (23) at concrete outlet Being driven by the motor (25) being fixed in mounting seat (26), motor (25) is by connecting electricity Line (24) is connected with controlling device；Spiral discharging device (23) includes helical axis and is positioned at spiral Discharging rod on axle, spiral discharging device (23) connects with transfer pipeline (28).

A kind of Multi-stage stirring formula concrete central mix plant the most according to claim 1, its It is characterised by: Multi-stage stirring device also includes, for water assembly, including being fixed on installation for water assembly Water pump (27) on seat (26), water pump (27) has the water supply conduit extended straight up, Water supply conduit connects with one-level agitator tank (13), two grades of agitator tanks (21) respectively, flow pipe The first Pressure gauge (31), the second Pressure gauge (33), the first Pressure gauge and one-level it is provided with on road Agitator tank (13) is corresponding, and the second Pressure gauge is corresponding with two grades of agitator tanks (21)；Water pump (27) Side connects also by water storage pipeline water tank (36), and water storage pipeline is provided with water intaking valve Door (37), water tank (36) also has the first outlet pipeline (32) and the second outlet pipeline (34), the first outlet pipeline (32) connects with one-level agitator tank (13), the second outlet pipe Road (34) connects with two grades of agitator tanks (21), and the second outlet pipeline is provided with second on (34) Flowing water Valve (35), the first outlet pipeline is provided with the first flowing water Valve on (32).

A kind of Multi-stage stirring formula concrete central mix plant the most according to claim 1, its It is characterised by: cement transportation line (41), sand material pipeline (42) and rubble pipeline (43) It is respectively connecting to the first buffering chamber (415), the second buffering chamber (416) and the 3rd buffering chamber (417), the first buffering chamber (415), the second buffering chamber (416) and the 3rd buffering chamber (417) Lower part outlet is provided with Electromagnetic Control valve (152), under each Electromagnetic Control valve (152) Portion is provided with a belt conveyer scale (418), Electromagnetic Control valve (152), belt conveyer scale all with control Device processed electrically connects, and controls the weighing data of device record belt conveyer scale (418) and adds up Calculating, three belt conveyer scales (418) store gravimetric value set in advance, and enter falling material Row weighs, and once the weight of material of belt conveyer scale (418) total weight reaches the weight pre-set Value, controls device and controls corresponding Electromagnetic Control valve (152) closedown, stop corresponding The supply of material；The bottom of three belt conveyer scales (418) is additionally provided with the conveying skin accepting material Band machine (419), material is delivered to Multi-stage stirring device by belt conveyer (419).

A kind of Multi-stage stirring formula concrete central mix plant the most according to claim 1, its It is characterised by: cement transportation line (41) includes that hopper (411) accepted by cement, and material accepted by cement Bucket (411) is for accepting the cement that transport vehicle ships, and the bottom of hopper (411) accepted by cement Be provided with the first inclined belt conveyer, the first inclined belt conveyer by cement transportation to cement Storage silo (412), cement storage silo (412) top is provided with cement screen pack, and cement is deposited The bottom of warehouse (412) is provided with cement air conveying line (414), cement pneumatic conveying The first crusing robot (413) it is additionally provided with on pipeline (414).

A kind of Multi-stage stirring formula concrete central mix plant the most according to claim 1, its Being characterised by: sand material pipeline (42) includes that hopper accepted by sand material, sand material is accepted hopper and is used for Accepting the sand material that transport vehicle ships, it is defeated that the bottom of sand material undertaking hopper is provided with the second belt slope Sending machine, sand material is delivered to sand material storage silo by the second inclined belt conveyer, in sand material storage silo Portion is provided with sand material screen pack, and the bottom of sand material storage silo is provided with sand material air conveying line, It is additionally provided with the second crusing robot on sand material air conveying line.

A kind of Multi-stage stirring formula concrete central mix plant the most according to claim 1, its Being characterised by: rubble pipeline (43) includes that rubble accepts hopper, rubble is accepted hopper and is used for Accepting the rubble that transport vehicle ships, it is defeated that the bottom of rubble undertaking hopper is provided with the 3rd belt slope Sending machine, rubble is delivered to rubble storage silo by the 3rd inclined belt conveyer, in rubble storage silo Portion is provided with rubble screen pack, and the bottom of rubble storage silo is provided with rubble air conveying line, The 3rd crusing robot it is additionally provided with on rubble air conveying line.

A kind of Multi-stage stirring formula concrete central mix plant the most according to claim 1, its It is characterised by: the first changeover valve and the second rotary valve structure are identical, all include rotary shaft (124), rotary shaft (124) outer cover is connected to axle sleeve (123), rotary shaft (124) bottom Connecting has swingle (125), swingle (125) end to be fixed with valve plates (126), rotation Rotating shaft (124) upper end is connected with the output shaft driving motor (121), rotary shaft (124) On be further fixed on pulling handle (122).

A kind of Multi-stage stirring formula concrete central mix plant the most according to claim 3, its It is characterised by: the first buffering chamber (415), the second buffering chamber (416) and the 3rd buffering chamber (417) it is provided with high-order level-sensing device (151) and low level level-sensing device, high-order level-sensing device (151) All electrically connect with control device with low level level-sensing device.