Background technology
Additive can improve the flowability of concrete mix, makes concrete be easier to vibrate in work progress, improves construction quality, can also regulate course of hardening, strengthens concrete durability.So the content of additive has significant impact to quality of concrete.
As shown in Figure 1, the additive metering system structure of concrete mixing plant is generally at present: additive weighing hopper 200 up, butterfly valve 300 is installed in the bottom, the below is for being installed in the water weighing hopper 400 on the support 500, when recording additive in the additive weighing hopper 200, LOAD CELLS 100 reaches when demarcating weight numerical value, additive pump (not shown) stops to additive weighing hopper 200 pumping additives, and butterfly valve 300 receives control signal and opens automatically, and additive flows into water weighing hopper 400.
Following problems may appear in scheme shown in Figure 1:
(1) if butterfly valve 300 hinder for some reason cause closure not go up or closure not tight, at the additive pump in the process of additive weighing hopper 200 pumping additives, additive can leak to water weighing hopper 400 by butterfly valve 300, cause when the additive pump has pumped an amount of additive, LOAD CELLS 100 still records below standardly to be decided weight numerical value and not to send the termination of pumping signal, the additive pump continues the pumping additive, causes occurring the super phenomenon of mixing of additive;
(2) when hindering for some reason, can not normally open by butterfly valve 300, and LOAD CELLS 100 hinders when can not sending out the termination of pumping signal for some reason simultaneously, the additive pump can constantly pump into additive in the additive weighing hopper 200, overflow until in additive weighing hopper 200, filling with, flow in the below water weighing hopper 400, the super phenomenon of mixing of additive occurs.
Therefore, how avoiding the excessive interpolation of additive effectively is the problem that current those skilled in the art need solve.
Summary of the invention
Therefore, one object of the present invention is to provide a kind of simple and effective device that is used for preventing the excessive interpolation of additive.
A kind of be used to the device that prevents the excessive interpolation of additive, comprising: support, telescoping cylinder, diversion component and fixing bucket; Described fixedly bucket and telescoping cylinder are installed on the described support, and described fixedly bucket comprises first bucket body and second bucket body; First outlet is set on described first bucket body, is used for corresponding with the water weighing hopper of mixing plant; Described diversion component is positioned at the below of the additive weighing hopper of described mixing plant, and partly is contained in the described fixedly bucket, and the discharging opening of described diversion component is positioned at described fixedly bucket; The flexible end of described telescoping cylinder is connected with described diversion component, is used for driving described diversion component and moves back and forth between primary importance and the second place; When described diversion component is positioned at described primary importance, be used for the additive that described additive weighing hopper flows out is inputed to described first bucket body; When described diversion component is positioned at the described second place, be used for the additive that described additive weighing hopper flows out is inputed to described second bucket body.
Further, be provided with cutting plate in the described diversion component, described cutting plate is divided into first hopper and second hopper with described diversion component; Described first hopper is provided with first discharging opening, and described second hopper is provided with second discharging opening; When described diversion component was positioned at described primary importance, described first hopper was used for receiving the additive that described additive weighing hopper flows out, and described first discharging opening is positioned at described first bucket body; When described diversion component was positioned at the described second place, described second hopper was used for receiving the additive that described additive weighing hopper flows out, and described second discharging opening is positioned at described second bucket body.
Further, described diversion component is provided with rotating shaft, and string is provided with connecting rod and mount pad in the described rotating shaft; The flexible end of described telescoping cylinder is connected with described connecting rod; Described mount pad is fixed on the described support.
Further, described cutting plate is arranged on the vertical plane at described rotating shaft place.
Further, when described diversion component was positioned at described primary importance, described telescoping cylinder was vertical with described connecting rod; Perhaps; When described diversion component was positioned at the described second place, described telescoping cylinder was vertical with described connecting rod.
Further, described diversion component is accommodated the discharging opening of described additive weighing hopper.
Further, described device also comprises overflow pipe, and the crossbeam in described overflow pipe and the described additive weighing hopper is connected, and the upper port of described overflow pipe is positioned at described additive weighing hopper, and the lower port of described overflow pipe is positioned at described second bucket body.
Further, described second bucket body is provided with for second outlet corresponding with the additive pond; Described first exit is provided with discharge pipe; Described second exit is provided with reflux line.
Further, described device also comprises solenoid electric valve, and described solenoid electric valve is connected with described telescoping cylinder, is used for the expanding-contracting action of the described telescoping cylinder of control.
Above-mentioned basis be used to the device that prevents the excessive interpolation of additive is being provided, and the present invention also provides a kind of mixing plant that comprises that this is used to prevent the device of the excessive interpolation of additive.
Provided by the invention be used to the device that prevents the excessive interpolation of additive by when breaking down normally discharging because of butterfly valve, the control telescoping cylinder drives diversion component and moves to the second place, so that the additive that diversion component flows out the additive weighing hopper inputs in second bucket body of fixing bucket, avoid additive to flow in the water weighing hopper, mix thereby effectively avoid additive to surpass, and then avoided the super concrete fault that causes of mixing of additive.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.In addition, those skilled in the art are according to the description of presents, can be to the respective combination mutually of the feature among embodiment in the presents and the different embodiment.
The structural representation for the device diversion component that prevents the excessive interpolation of additive that Fig. 2 provides for the embodiment of the invention, as shown in Figure 2, be provided with cutting plate 51 in the diversion component 5, the bottom is provided with rotating shaft 54, and cutting plate 51 is divided into first hopper 52 and second hopper 53 with diversion component 5; First hopper 52 is provided with the first discharging opening 52a, and second hopper 53 is provided with the second discharging opening 53a; The hole of connecting rod 55 lower ends is passed in rotating shaft 54, and the hole of connecting rod 55 upper ends is used for being connected with the flexible end of telescoping cylinder.Like this, by telescoping cylinder push-and-pull connecting rod 55, drive rotating shaft 54 and rotate, and then drive diversion component 5 rotations.During concrete operations, diversion component 5 can be bucket-shaped structure as shown in Figure 2, also can be trench structure, and namely it can provide an inclined-plane to realize that water conservancy diversion gets final product at a certain state, does not limit its concrete structure.
Preferably, in order to realize cutting plate 51 and rotating shaft 54 coaxial rotations, cutting plate 51 is arranged on the vertical plane at rotating shaft 54 places.
During concrete operations, rotating shaft 54 can connect with the bucket back welding of diversion component 5, certainly, in order to realize that telescoping cylinder drives diversion component 5 and rotates, rotating shaft 54 form in addition can also be set, as can directly at diversion component 5 rotating stand being set, telescoping cylinder is connected with this rotating stand, to drive diversion component 5 rotations.
Please refer to Fig. 3 and Fig. 4, the two be respectively prevent the embodiment of the invention being used for of providing the excessive interpolation of additive device structural representation and comprise the structural representation of the additive metering system of this device, wherein, should be used for preventing that the device of the excessive interpolation of additive from can comprise: support 11, telescoping cylinder 10, diversion component 5 and fixing bucket 6; Fixing bucket 6 and telescoping cylinder 10 are installed on the support 11, and fixing bucket 6 comprises first bucket body and second bucket body; First outlet is set on first bucket body, is used for corresponding with the water weighing hopper 9 of mixing plant; Second outlet is set on second bucket body, is used for corresponding with external container (not shown); Diversion component 5 is positioned at the below of the additive weighing hopper 2 of mixing plant, and partly is contained in the fixing bucket 6, and the discharging opening of diversion component 5 is positioned at fixing bucket 6; The flexible end of telescoping cylinder 10 is connected (as shown in Figure 2) with the connecting rod 55 of diversion component 5, is used for driving diversion component 5 and moves back and forth between primary importance 5a and second place 5b; String is established mount pad 56 in the rotating shaft 54, and this mount pad 56 is fixed on the support 11.
Specifically referring to Fig. 2 and diversion component 5 shown in Figure 3, it adopts irregular structure, prevents bottom and fixing bucket 6 interference.Support 11 water-filling bucket hanging beams can adopt and protrude upward structure, have realized taking full advantage of on the height space.
The course of work of said apparatus is: as Fig. 2-shown in Figure 3, when the normal discharging state of additive, stretch out to promote diversion component 5 by telescoping cylinder 10 and move to above-mentioned primary importance 5a, first hopper 52 is used for receiving the additive that additive weighing hopper 2 flows out, first discharging opening is positioned at first bucket body, the additive that realization will be flowed out from the discharge port 21 of additive weighing hopper 2 is sent into first bucket body of fixing bucket 6, and then by first on first bucket body outlet additive is sent in the water weighing hopper 9, realize normal discharging; At other states, breaking down as the butterfly valve of additive weighing hopper 2 belows, (closure does not go up, can not open and be difficult to and close tight) time, control (manually control or control automatically, wherein automatically the explanation of control sees the description of next section for details) telescoping cylinder bounces back to spur diversion component 5 and moves to said second position 5b, second hopper 53 is used for receiving the additive that additive weighing hopper 2 flows out, second discharging opening is positioned at second bucket body, the additive that realization will be flowed out from the discharge port 21 of additive weighing hopper 2 is sent into second bucket body of fixing bucket 6, guarantees that the super phenomenon of mixing can not appear in additive.Can additive be sent in the external container by the outlet of second on second bucket body further, be convenient to the recycling of additive.Because in the reciprocating process, its discharging opening is positioned at fixing bucket 6 to diversion component 5 all the time, can prevent effectively that additive from spattering outward between primary importance 5a and second place 5b.Certainly, also can increase by fixing 6 liang of side guards of bucket during concrete operations, prevent that further additive from spattering outward.
During concrete operations, above-mentioned telescoping cylinder 10 can be cylinder or hydraulic cylinder etc., and telescoping cylinder 10 can carry solenoid electric valve, with realize flexible control automatically (such as when electric control telescoping cylinder 10 stretch out, control telescoping cylinder 10 withdrawals during dead electricity, control procedure is prior art, does not give unnecessary details now); During for the employing cylinder, the air inlet of cylinder and gas outlet can be equipped with choke valve, realize the adjusting to tolerance, reduce the flexible vibration that causes of cylinder.Be understandable that, the effect of telescoping cylinder 10 is to drive diversion component 5 and moves back and forth between primary importance 5a and second place 5b, above-mentioned this is used for preventing the explaining of the course of work of the device of the excessive interpolation of additive, telescoping cylinder 10 bounced back to spur diversion component 5 and moves to said second position 5b when butterfly valve broke down, in other embodiments, the position that arranges that can appropriate change telescoping cylinder 10 promotes diversion component 5 and moves to said second position 5b to realize stretching by telescoping cylinder 10, so the concrete type of drive of 10 pairs of diversion components 5 of telescoping cylinder should not done limited understanding.
Preferably, for the active force of maximum using telescoping cylinder, when diversion component 5 is positioned at primary importance 5a, telescoping cylinder 10 and connecting rod 55 near vertical can be set; Perhaps; When diversion component 5 is positioned at second place 5b, telescoping cylinder 10 and connecting rod 55 near vertical are set.
Preferably, outside the additive that diversion component 5 rotations cause, spatter phenomenon, diversion component 5 is accommodated the discharging opening of additive weighing hopper 2, be that additive weighing hopper 2 discharging openings are positioned at diversion component 5, simultaneously, for fear of conflicting with the cutting plate 51 of diversion component 5, additive weighing hopper 2 discharging openings are slightly higher than the top of cutting plate 51.
Preferably, said apparatus can also comprise overflow pipe 3, crossbeam in overflow pipe 3 and the additive weighing hopper 2 is connected (as welding), the upper port of overflow pipe 3 is positioned at additive weighing hopper 2 (as upper port that overflow pipe 3 can the be set top a little less than additive weighing hopper 2), the lower port of overflow pipe 3 is positioned at second bucket body, to realize that additive can both overflow in second bucket body under any state.
Preferably, spatter phenomenon when first outlet and second exports outflow outside additive occurs, first exit is provided with discharge pipe 8, and the outlet of discharge pipe 8 is positioned at water weighing hopper 9; Second exit is provided with reflux line 7, and the outlet of reflux line 7 is communicated with external container.Further preferably, above-mentioned external container is the additive pond, to realize that additive recycles.
Need to prove, be the example explanation that makes an explanation to arrange in the diversion component 5 in two bucket bodies that a flow distribution plate 51 branches to the top additive fixing bucket 6 all in the various embodiments of the present invention, during concrete operations, diversion component can also adopt the structure of a bucket body, drives the diversion component with a bucket body by telescoping cylinder and rotates than wide-angle with in two bucket bodies that additive are delivered to fixing bucket 6 respectively; Diversion component has two hoppers and can realize the shunting of additive under normal discharging and other states with respect to the structure that adopts a bucket body when rotating less angle, particularly at flow distribution plate 51 during with rotating shaft 54 coaxial rotations, and the angle minimum of required rotation.
Present embodiment is by when breaking down normally discharging because of butterfly valve, the control telescoping cylinder drives diversion component and moves to the second place, so that the additive that diversion component flows out the additive weighing hopper inputs in second bucket body of fixing bucket, thereby avoid additive to flow in the water weighing hopper, and then avoid effectively that additive is super mixes and mix because additive is super the concrete fault that causes; Simultaneously, when the butterfly valve operate as normal, the control telescoping cylinder drives diversion component and moves to primary importance, so that the additive that diversion component flows out the additive weighing hopper inputs in first bucket body of fixing bucket, by the outlet of first on first bucket body additive is delivered in the water weighing hopper again, realizes normal discharging.
Above-mentioned basis be used to the device that prevents the excessive interpolation of additive is being provided, the embodiment of the invention also provides a kind of mixing plant that is provided with said apparatus, as shown in Figure 4, this mixing plant can comprise LOAD CELLS 1, additive weighing hopper 2, overflow pipe 3, butterfly valve 4, diversion component 5, fixing bucket 6, reflux line 7, discharge pipe 8, water weighing hopper 9, telescoping cylinder 10 and support 11.Above-mentionedly prevent that to being used for the explaining of device of the excessive interpolation of additive all is applicable to present embodiment, therefore, this mixing plant also possesses the above-mentioned corresponding technique effect of the device that prevents the excessive interpolation of additive, does not give unnecessary details now.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.