CN116351586B - Horizontal spiral discharging filtering type centrifugal machine - Google Patents

Abstract

The invention relates to the field of filter centrifuges, in particular to a horizontal screw discharge filter centrifuge. The invention sets a centrifugal mechanism, a feeding pipe, a collector and a central control processor, and the central control processor detects the viscosity based on a viscosity sensor. Analyze the viscosity of the solid-liquid mixture to obtain the viscosity status of the solid-liquid mixture, and determine the adjustment method for adjusting the rotation speed of the drum and the power of the feed pump based on the obtained viscosity status. In the first viscosity status, according to the first flow rate and the second The first flow difference obtained from the two flow calculations determines whether to correct the power of the feed pump, and determines the correction amount when correcting the power of the feed pump. Under the second viscosity condition, according to the first flow difference and The second flow difference calculated by the second flow and the third flow determines the liquid collection state, and based on the determined liquid collection state, the power of the feed pump and the rotational speed of the drum are corrected to improve the centrifugal efficiency of the centrifuge with effect.

Description

A horizontal spiral discharge filter centrifuge

technical field

The invention relates to the field of filter centrifuges, in particular to a horizontal spiral discharge filter centrifuge.

Background technique

The horizontal screw discharge filter centrifuge has the advantages of small size, large output, high dehydration efficiency, low filter cake and operating costs, and has high application value. It is widely used in chemical industry, water treatment, pharmaceutical and other departments.

Chinese Patent Publication No.: CN112774876A discloses the following content. This invention discloses a horizontal spiral unloading filter centrifuge that is convenient for unloading, including a base. The top of the base is fixedly equipped with a pad and a support on the right side A block, a protective box is fixedly installed on the top of the cushion block, a centrifugal chamber is fixedly installed on the top of the support block, and the left side of the centrifugal chamber is fixedly connected with the right side of the protective box. In this invention, after the solid material falls into the solid discharge pipe and the inside of the discharge pipe from the centrifuge chamber, the push block can be pushed out by the hydraulic cylinder to push out the solid material inside the discharge pipe, thereby facilitating the discharge of the horizontal screw discharge filter centrifuge , through the mutual cooperation of two motors, two driving wheels and two driven wheels, the rotating tube and the rotating shaft can be driven to rotate, and the rotating tube and rotating shaft can drive the rotating drum and the inner cylinder to rotate in different directions, so that the inner cylinder can Drive the outer screw to speed up the unloading of solids attached to the inner wall of the drum, further improving the practicability of the screw discharge filter centrifuge.

However, in the prior art, there are also the following problems:

In the prior art, it is not considered to automatically adjust the rotational speed of the drum and the inflow flow rate according to the viscosity of the liquid to be centrifuged, and to monitor and automatically adjust the operating parameters during the working process of the centrifuge to improve the centrifugation effect.

Contents of the invention

In order to solve the problems in the prior art that do not consider automatically adjusting the rotational speed of the drum and the influent flow rate according to the viscosity of the centrifuged liquid, and do not monitor and automatically adjust the operating parameters during the working process of the centrifuge to improve the centrifugation effect, this paper The invention provides a horizontal spiral discharge filter centrifuge, which includes:

A centrifugal mechanism, which includes a drum and a screw feeder connected to the drum through a differential, so that the drum and the screw feeder rotate at a differential speed to achieve a centrifugal effect;

A feed pipe, which is arranged in the drum, is used to input the solid-liquid mixture into the drum, and a feed pump is arranged at the feeding port of the feed pipe to control the solid-liquid mixture to enter the The flow rate of the feed pipe, the feed pipe is provided with a first flow sensor to detect the first flow, and the feed pipe is also provided with a viscosity sensor to detect the viscosity value of the solid-liquid mixture;

A collector, which includes a first collecting pipe used to collect the separation liquid discharged from the drain opening arranged on the drum and a second collection pipe used to collect the filtrate filtered out by the filter port arranged on the drum. A collection pipe, the first collection pipe is provided with a second flow sensor to detect the second flow, and the second collection pipe is provided with a third flow sensor to detect the third flow;

a central control processor, which includes an interconnected viscosity analysis unit, a first correction unit and a second correction unit,

The viscosity analysis unit is connected with the viscosity sensor, the power unit and the feed pump, and is used to analyze and obtain the viscosity status of the solid-liquid mixture based on the viscosity value detected by the viscosity sensor, and determine the viscosity status based on the analyzed viscosity status. The adjustment method when adjusting the rotating speed of the drum and the power of the feed pump;

The first correction unit is connected with the feed pump, and is used to determine whether the Correcting the power of the feed pump, and determining a correction amount when correcting the power of the feed pump;

The second correction unit is connected with the feed pump and the power device of the centrifugal mechanism, and is used for analyzing and obtaining the second viscosity condition by the viscosity analysis unit, according to the first flow difference and through the second The second flow difference calculated from the flow rate and the third flow rate determines the liquid collection state, and corrects the power of the feed pump and the rotational speed of the drum based on the determined liquid collection state.

Further, the viscosity analysis unit compares the viscosity value V with the preset viscosity comparison threshold V0, and analyzes and obtains the viscosity status of the solid-liquid mixture according to the comparison result, wherein,

Under the first viscosity comparison result, the viscosity analysis unit analyzes and acquires the solid-liquid mixture into the first viscosity state;

Under the second viscosity comparison result, the viscosity analysis unit analyzes and obtains the solid-liquid mixture into a second viscosity state;

Wherein, the first viscosity comparison result is V<V0, and the second viscosity comparison result is V≥V0.

Further, the viscosity analysis unit determines the power adjustment mode when adjusting the power of the feed pump according to the viscosity of the solid-liquid mixture, wherein,

The first power adjustment method is that the viscosity analysis unit adjusts the power of the feed pump to a first power adjustment value P1;

The second power adjustment method is that the viscosity analysis unit adjusts the power of the feed pump to a second power adjustment value P2;

Wherein, the first power adjustment method needs to meet the first viscosity state of the solid-liquid mixture, and the second power adjustment method needs to satisfy the second viscosity state of the solid-liquid mixture, P1>P2.

Further, the viscosity analysis unit judges the rotation speed adjustment mode when adjusting the rotation speed of the drum according to the viscosity status of the solid-liquid mixture, wherein,

The first rotation speed adjustment method is that the viscosity analysis unit adjusts the rotation speed of the drum to the first rotation speed adjustment value R1;

The second speed adjustment method is that the viscosity analysis unit adjusts the speed of the drum to the second speed adjustment value R2;

Wherein, the first rotation speed adjustment method needs to meet the first viscosity state of the solid-liquid mixture, and the second rotation speed adjustment method needs to satisfy the second viscosity state of the solid-liquid mixture, R1<R2.

Further, the first correction unit acquires the data obtained by the first flow sensor and the second flow sensor in real time and calculates the first flow difference ΔQ, and sets ΔQ=Q1-Q2, where Q1 represents the first Flow rate, Q2 represents the second flow rate, and the first correction unit performs the first flow difference ΔQ with the preset first flow difference comparison threshold ΔQ1 and the second flow difference comparison threshold ΔQ2 For comparison, determine whether to correct the power of the feed pump according to the comparison result, and determine the correction amount when the power of the feed pump is corrected, wherein,

Under the first flow comparison result, the first correction unit determines that the power of the feed pump needs to be corrected, and corrects the power of the feed pump to the first value according to the preset first power correction parameter p11 Power correction value P11, set P11=P1-p11;

Based on the second flow comparison result, the first correction unit determines that it is not necessary to correct the power of the feed pump;

Under the third flow comparison result, the first correction unit determines that the power of the feed pump needs to be corrected, and corrects the power of the feed pump to the second according to the preset first power correction parameter p11 Power correction value P12, set P12=P1+p11;

Wherein, the first flow comparison result is △Q≥△Q2, the second flow comparison result is △Q1≤△Q<△Q2, the third flow comparison result is △Q<△Q1, P11<P12 .

Further, the second correction unit acquires the data acquired by the first flow sensor and the second flow sensor in real time and calculates the first flow difference ΔQ, sets ΔQ=Q1-Q2, and acquires the data in real time The data obtained by the second flow sensor and the third flow sensor are used to calculate the second flow difference △Q', set △Q'=Q2-Q3, where Q1 represents the first flow rate, Q2 represents the second flow rate, and Q3 represents the second flow rate Three flows, Q1>Q2>Q3.

Further, the second correction unit compares the first flow difference ΔQ with a preset third flow difference comparison threshold ΔQ3, and compares the second flow difference ΔQ' with a preset The set fourth flow difference is compared with the threshold △Q4, and the liquid collection state is determined according to the comparison result, wherein,

If the comparison result satisfies the first preset condition, the second correction unit determines that the liquid collection state is the first liquid collection state;

If the comparison result satisfies the second preset condition, the second correction unit determines that the liquid collection state is the second liquid collection state;

If the comparison result satisfies the third preset condition, the second correction unit determines that the liquid collection state is a third liquid collection state;

Wherein, the first preset condition is △Q≥△Q3 and △Q'<△Q4, the second preset condition is △Q<△Q3 and △Q'<△Q4, the first preset The conditions are ΔQ≥ΔQ3 and ΔQ'>ΔQ4.

Further, the second correction unit judges the correction method when correcting the power of the feed pump and the rotational speed of the drum according to the state of liquid collection, wherein,

The first correction method is that the second correction unit corrects the power of the feed pump to the third power correction value P21 according to the preset second power correction parameter p21, setting P21=P2-p21, and according to the preset The first rotational speed correction parameter r21 corrects the rotational speed of the drum to the first rotational speed correction value R21, setting R21=R2+r21;

The second correction method is that the second correction unit corrects the rotational speed of the drum to the first rotational speed correction value R21 according to the preset first rotational speed correction parameter r21, setting R21=R2+r21;

The third correction method is that the second correction unit corrects the power of the feed pump to a third power correction value P21 according to the preset second power correction parameter p21, setting P21=P2-p21;

Wherein, the first correction method needs to satisfy that the liquid collection state is the first liquid collection state, the second correction method needs to satisfy that the liquid collection state is the second liquid collection state, and the third The correction method needs to satisfy that the liquid collection state is the third liquid collection state.

Further, the second correction unit is also used to determine whether the centrifuge is running abnormally according to the determined liquid collection state, wherein,

If the liquid collection state is the first liquid collection state, the second correction unit determines that the operation is abnormal.

Further, the drum includes a first drum and a second drum integrally connected, so that the screw propeller pushes the centrifuged solid from the first drum to the second drum One end of the first drum is provided with a drainage port to allow the internal separation liquid to flow out from the drainage port, and several filter ports are provided on the second drum to propel the screw propeller. The solids to the second drum are filtered.

Compared with the prior art, the present invention sets the centrifugal mechanism, the feed pipe, the collector and the central control processor, and the central control processor analyzes and acquires the viscosity status of the solid-liquid mixture based on the viscosity value detected by the viscosity sensor, and based on the acquired The viscosity condition determines the adjustment method when adjusting the rotating speed of the drum and the power of the feed pump. Correct the power of the feed pump and determine the correction amount when correcting the power of the feed pump. Under the second viscosity condition, the second flow difference is calculated according to the first flow difference and the second flow and the third flow. The liquid collection state is determined, and the power of the feed pump and the rotational speed of the rotating drum are corrected based on the determined liquid collection state, thereby improving the centrifugal efficiency and effect of the centrifuge.

In particular, in the present invention, the central control processor adjusts the rotating speed of the drum and the power of the feed pump based on the viscosity of the solid-liquid mixture. Due to the strong interaction between solid and liquid, the centrifugation effect of the mixture is poorer than that of the solid-liquid mixture with lower viscosity. The rotation speed of the drum when the mixture is centrifuged, and the power of the feed pump when the solid-liquid mixture with lower viscosity is centrifuged is greater than the power of the feed pump when the solid-liquid mixture with higher viscosity is centrifuged, ensuring that the centrifuge The centrifugal effect, while taking into account the centrifugal efficiency of the centrifuge.

Especially, in the present invention, under the condition of the first viscosity with low viscosity, the central control processor determines whether to correct the power of the feed pump according to the first flow difference calculated from the first flow and the second flow. In this case, the second flow rate is the flow rate of the separation liquid separated from the solid-liquid mixture through primary centrifugation, and the separation liquid is the part of the solid-liquid mixture that has been centrifuged. Therefore, the first flow difference represents the solid-liquid flow rate per unit time. The initial centrifugation effect of the mixture. When the first flow difference is greater than a certain value, the first flow needs to be reduced to ensure the centrifugal effect of the solid-liquid mixture. When the first flow difference is less than a certain value, the first flow needs to be increased. , to improve the centrifugation efficiency of the solid-liquid mixture, and when the viscosity of the solid-liquid mixture is low, the interaction force between the solid and the liquid is weak, so a better centrifugal effect can be achieved after the initial centrifugation, so there is no need for a third Flow analysis reduces the amount of data calculation of the central control processor, and improves the centrifugal efficiency and effect of the centrifuge on the premise of ensuring the reliability of the central control processor.

Especially, in the present invention, under the condition of the second viscosity with higher viscosity, the central control processor determines the state of liquid collection according to the first flow difference and the second flow difference. The flow of the separation liquid separated from the solid-liquid mixture, the third flow is the flow of the filtrate in the solid-liquid mixture that enters the second drum for re-centrifugation except the separation liquid, therefore, the first flow difference represents the unit time The preliminary centrifugation effect of the internal solid-liquid mixture, the second flow difference characterizes the residual moisture in the remaining solid after the separation liquid is separated from the solid-liquid mixture, therefore, according to the first flow difference and the second flow difference can be Reliable characterization of the centrifugation status of the solid-liquid mixture entering the second drum for re-centrifugation ensures that the subsequent operation parameters of the centrifuge can be effectively corrected according to the liquid collection state, and the centrifugation efficiency and effect of the solid-liquid mixture are guaranteed.

In particular, in the present invention, under the condition of the second viscosity with higher viscosity, the central control processor corrects the rotation speed of the drum according to the second flow difference calculated by the second flow and the third flow. In actual situations, The third flow rate is the flow rate of the filtrate in the solid-liquid mixture that enters the second drum for re-centrifugation except for the separation liquid. The second flow difference represents the difference between the separation liquid and the filtrate, and the second flow difference is small. The residual moisture content in the remaining solid after the initial centrifugation separates the separation liquid from the solid-liquid mixture is high, and the centrifugation effect is poor. It is necessary to increase the rotating speed of the drum to improve the centrifugation effect. When the viscosity of the solid-liquid mixture is high, the solid and liquid The interaction force between them is strong, so the first centrifugation may not have a good centrifugation effect, so it is necessary to analyze the third flow to ensure the centrifugation effect of the solid-liquid mixture.

Description of drawings

Fig. 1 is the structural representation of the horizontal spiral unloading filtering centrifuge of the embodiment of the invention;

Fig. 2 is a schematic structural diagram of the central control processor of the embodiment of the invention;

In the figure, 1: power unit, 2: differential, 3: first drum, 4: drum, 5: second drum, 6: feed pipe, 7: viscosity sensor, 8: first flow sensor , 9: the second flow sensor, 10: the first collection pipe, 11: the third flow sensor, 12: the second collection pipe, 13: screw pusher, 14: drainage port, 15: filter port.

Detailed ways

In order to make the objects and advantages of the present invention clearer, the present invention will be further described below in conjunction with the examples; it should be understood that the specific examples described here are only for explaining the present invention, and are not intended to limit the present invention.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "inner", "outer" and other indicated directions or positional relationships are based on the terms shown in the accompanying drawings. The direction or positional relationship shown is only for convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Please refer to Fig. 1 and Fig. 2, which are a schematic structural diagram of a horizontal spiral discharge filter centrifuge and a simplified structural diagram of a central control processor according to an embodiment of the present invention. The horizontal spiral discharge filter centrifuge of the present invention includes :

Centrifugal mechanism, which includes a drum 4 and a screw feeder 13 arranged in the drum 4, the end of the screw feeder 13 extends to the outside of the drum 4 and communicates with the drum 4 through a differential 2 The drum 4 is connected, and the screw propeller 13 is connected with the power unit 1, so that the power unit 1 drives the screw propeller 13 and the rotating drum 4 to rotate at a differential speed to achieve a centrifugal effect;

Feed pipe 6, which is arranged in the drum 4, to input the solid-liquid mixture into the drum 4, and a feed pump is arranged at the feeding port of the feed pipe 6 to control the solid-liquid mixture. The flow rate of the liquid mixture into the feed pipe 6, the feed pipe 6 is provided with a first flow sensor 8 to detect the first flow, and the feed pipe 6 is also provided with a viscosity sensor 7 to detect solid The viscosity value of the liquid mixture;

Collector, it comprises the first collection pipe 10 that is used to collect the separation liquid that is arranged on the dredging outlet 14 that is arranged on the said rotating drum 4 and flows out and is used for collecting the separated liquid that is filtered out by the filter port 15 that is arranged on the said rotating drum 4 The second collection pipe 12 of the filtrate, the first collection pipe 10 is provided with a second flow sensor 9 to detect the second flow, and the second collection pipe 12 is provided with a third flow sensor 11 to detect the third flow ;

a central control processor, which includes an interconnected viscosity analysis unit, a first correction unit and a second correction unit,

The viscosity analysis unit is connected with the viscosity sensor 7, the power unit 1 and the feed pump, and is used to analyze and obtain the viscosity status of the solid-liquid mixture based on the viscosity value detected by the viscosity sensor 7, and based on the analyzed and obtained Viscosity status judgment when adjusting the rotating speed of the drum 4 and the power of the feed pump;

The first correction unit is connected with the feed pump, and is used to determine whether the Correcting the power of the feed pump, and determining a correction amount when correcting the power of the feed pump;

The second correction unit is connected with the feed pump and the power unit 1 of the centrifugal mechanism, and is used for analyzing and obtaining the second viscosity condition by the viscosity analysis unit, according to the first flow difference and through the second The second flow difference calculated from the second flow and the third flow determines the liquid collection state, and corrects the power of the feed pump and the rotational speed of the drum 4 based on the determined liquid collection state.

Specifically, the present invention does not limit the specific form of the central control processor, it can be an external computer, it only needs to be able to complete the functions of data receiving, data sending and data processing, and each unit therein can be The application programs in the computer are all mature prior art, and will not be repeated here.

Specifically, the viscosity analysis unit compares the viscosity value V with a preset viscosity comparison threshold V0, where V0>0, and analyzes and obtains the viscosity status of the solid-liquid mixture according to the comparison result, wherein,

Under the first viscosity comparison result, the viscosity analysis unit analyzes and acquires the solid-liquid mixture into the first viscosity state;

Under the second viscosity comparison result, the viscosity analysis unit analyzes and obtains the solid-liquid mixture into a second viscosity state;

Wherein, the first viscosity comparison result is V<V0, and the second viscosity comparison result is V≥V0.

Specifically, the viscosity analysis unit determines the power adjustment mode when adjusting the power of the feed pump according to the viscosity of the solid-liquid mixture, wherein,

The first power adjustment method is that the viscosity analysis unit adjusts the power of the feed pump to a first power adjustment value P1;

The second power adjustment method is that the viscosity analysis unit adjusts the power of the feed pump to a second power adjustment value P2;

Wherein, the first power adjustment method needs to meet the first viscosity state of the solid-liquid mixture, and the second power adjustment method needs to satisfy the second viscosity state of the solid-liquid mixture, P1>P2.

Specifically, the viscosity analysis unit judges the rotation speed adjustment mode when adjusting the rotation speed of the drum 4 according to the viscosity status of the solid-liquid mixture, wherein,

The first rotational speed adjustment method is that the viscosity analysis unit adjusts the rotational speed of the drum 4 to a first rotational speed adjustment value R1;

The second speed adjustment method is that the viscosity analysis unit adjusts the speed of the drum 4 to a second speed adjustment value R2;

Wherein, the first rotation speed adjustment method needs to meet the first viscosity state of the solid-liquid mixture, and the second rotation speed adjustment method needs to satisfy the second viscosity state of the solid-liquid mixture, R1<R2.

Specifically, in the present invention, the central control processor adjusts the rotating speed of the drum 4 and the power of the feed pump based on the viscosity of the solid-liquid mixture. In actual situations, when the operating parameters of the centrifuge are the same, the viscosity is higher Due to the strong interaction force between the solid and the liquid, the solid-liquid mixture has a poorer centrifugal effect than the solid-liquid mixture with lower viscosity. Therefore, when the solid-liquid mixture with higher viscosity is centrifuged, the rotating speed of drum 4 is greater than that The rotational speed of the drum 4 when the low solid-liquid mixture is centrifuged, and the power of the feed pump when the solid-liquid mixture with low viscosity is centrifuged is greater than the power of the feed pump when the solid-liquid mixture with higher viscosity is centrifuged , to ensure the centrifugal effect of the centrifuge, while taking into account the centrifugal efficiency of the centrifuge.

Specifically, the first correction unit acquires the data obtained by the first flow sensor 8 and the second flow sensor 9 in real time and calculates the first flow difference ΔQ, and sets ΔQ=Q1-Q2, where Q1 represents the first flow rate, Q2 represents the second flow rate, and the first correction unit compares the first flow difference ΔQ with the preset first flow difference comparison threshold ΔQ1 and the second flow difference comparison threshold △Q2 for comparison, 0<△Q1<△Q2, determine whether to correct the power of the feed pump according to the comparison result, and determine the correction amount when correcting the power of the feed pump, wherein,

Under the first flow comparison result, the first correction unit determines that the power of the feed pump needs to be corrected, and corrects the power of the feed pump to the first value according to the preset first power correction parameter p11 Power correction value P11, set P11=P1-p11;

Based on the second flow comparison result, the first correction unit determines that it is not necessary to correct the power of the feed pump;

Under the third flow comparison result, the first correction unit determines that the power of the feed pump needs to be corrected, and corrects the power of the feed pump to the second according to the preset first power correction parameter p11 Power correction value P12, set P12=P1+p11;

Wherein, the first flow comparison result is △Q≥△Q2, the second flow comparison result is △Q1≤△Q<△Q2, and the third flow comparison result is △Q<△Q1, p11<10kw , P11<P12<60kw.

Specifically, in the present invention, under the condition of the first viscosity with low viscosity, the central control processor determines whether to correct the power of the feed pump according to the first flow difference calculated from the first flow and the second flow, In actual situations, the second flow rate is the flow rate of the separation liquid separated from the solid-liquid mixture through primary centrifugation. The separation liquid is the part of the solid-liquid mixture that has been centrifuged. Therefore, the first flow difference represents the flow rate per unit time. For the preliminary centrifugal effect of the solid-liquid mixture, when the first flow difference is greater than a certain value, it is necessary to reduce the first flow to ensure the centrifugal effect of the solid-liquid mixture; when the first flow difference is less than a certain value, it is necessary to increase the first flow One flow rate to improve the centrifugation efficiency of the solid-liquid mixture, and when the viscosity of the solid-liquid mixture is low, the interaction force between the solid and the liquid is weak, so a better centrifugal effect can be achieved after the initial centrifugation, so there is no need to The third flow is analyzed, which reduces the data calculation amount of the central control processor, and improves the centrifugal efficiency and effect of the centrifuge under the premise of ensuring the reliability of the central control processor.

Specifically, the second correction unit acquires the data acquired by the first flow sensor 8 and the second flow sensor 9 in real time and calculates the first flow difference ΔQ, setting ΔQ=Q1-Q2, and, in real time Obtain the data acquired by the second flow sensor 9 and the third flow sensor 11 and calculate the second flow difference ΔQ', set ΔQ'=Q2-Q3, where Q1 represents the first flow rate, Q2 represents the second flow rate Flow rate, Q3 represents the third flow rate, Q1>Q2>Q3.

Specifically, the second correction unit compares the first flow difference ΔQ with a preset third flow difference comparison threshold ΔQ3, ΔQ3>0, and the second flow difference The value △Q' is compared with the preset fourth flow difference comparison threshold △Q4, △Q4>0, and the liquid collection state is determined according to the comparison result, wherein,

If the comparison result satisfies the first preset condition, the second correction unit determines that the liquid collection state is the first liquid collection state;

If the comparison result satisfies the second preset condition, the second correction unit determines that the liquid collection state is the second liquid collection state;

If the comparison result satisfies the third preset condition, the second correction unit determines that the liquid collection state is a third liquid collection state;

Wherein, the first preset condition is △Q≥△Q3 and △Q'<△Q4, the second preset condition is △Q<△Q3 and △Q'<△Q4, and the third preset condition is The conditions are ΔQ≥ΔQ3 and ΔQ'>ΔQ4.

Specifically, in the present invention, under the condition of the second viscosity with higher viscosity, the central control processor determines the state of liquid collection according to the first flow difference and the second flow difference. The flow rate of the separation liquid separated from the solid-liquid mixture by the first centrifugation, and the third flow rate is the flow rate of the filtrate in the solid-liquid mixture that enters the second drum 5 for re-centrifugation except for the separation liquid. Therefore, the first flow difference represents The initial centrifugation effect of the solid-liquid mixture per unit time, the second flow difference characterizes the residual moisture in the remaining solid after the separation liquid is separated from the solid-liquid mixture, therefore, according to the first flow difference and the second flow The difference can reliably represent the centrifugation status of the solid-liquid mixture entering the second drum 5 for re-centrifugation, ensuring that the subsequent operation parameters of the centrifuge can be effectively corrected according to the liquid collection state, and the centrifugation efficiency and Effect.

Specifically, the second correction unit judges the correction method when correcting the power of the feed pump and the rotational speed of the drum 4 according to the liquid collection state, wherein,

The first correction method is that the second correction unit corrects the power of the feed pump to the third power correction value P21 according to the preset second power correction parameter p21, setting P21=P2-p21, and according to the preset The first rotational speed correction parameter r21 corrects the rotational speed of the drum 4 to the first rotational speed correction value R21, setting R21=R2+r21;

The second correction method is that the second correction unit corrects the rotational speed of the drum 4 to the first rotational speed correction value R21 according to the preset first rotational speed correction parameter r21, setting R21=R2+r21;

The third correction method is that the second correction unit corrects the power of the feed pump to a third power correction value P21 according to the preset second power correction parameter p21, setting P21=P2-p21;

Wherein, the first correction method needs to satisfy that the liquid collection state is the first liquid collection state, the second correction method needs to satisfy that the liquid collection state is the second liquid collection state, and the third The correction method needs to satisfy that the liquid collection state is the third liquid collection state, r21<1000r/min, p21<10kw, P21<30kw, R21<4500r/min.

Specifically, in the present invention, under the condition of the second viscosity with higher viscosity, the central control processor corrects the rotational speed of the drum 4 according to the second flow difference calculated by the second flow and the third flow. In the case, the third flow rate is the flow rate of the filtrate that enters the second drum 5 for re-centrifugation in the solid-liquid mixture except the separation liquid, and the second flow difference represents the difference between the separation liquid and the filtrate, and the second flow rate The small difference shows that the residual moisture content in the remaining solid after the initial centrifugation separates the separation liquid from the solid-liquid mixture is high, and the centrifugal effect is poor. It is necessary to increase the rotating speed of the drum 4 to improve the centrifugal effect, and the viscosity of the solid-liquid mixture is higher. , the interaction force between the solid and the liquid is strong, so the first centrifugation may not have a good centrifugation effect, so the third flow needs to be analyzed to ensure the centrifugation effect of the solid-liquid mixture.

Specifically, the second correction unit is also used to determine whether the centrifuge is running abnormally according to the determined liquid collection state, wherein,

If the liquid collection state is the first liquid collection state, the second correction unit determines that the operation is abnormal.

Specifically, the drum 4 includes a first drum 3 and a second drum 5 integrally connected, so that the screw pusher 13 pushes the centrifuged solids from the first drum 3 to At the second drum 5, one end of the first drum 3 is provided with a drain port 14, so that the internal separation liquid flows out from the drain port 14, and the second drum 5 is provided with A plurality of filter ports 15 are used to filter the solids propelled by the screw propeller 13 to the second drum 5 .

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings, but those skilled in the art will easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to related technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims (10)

1. A horizontal spiral discharge filter centrifuge, characterized in that, comprising: A centrifugal mechanism, which includes a drum and a screw feeder connected to the drum through a differential, so that the drum and the screw feeder rotate at a differential speed to achieve a centrifugal effect; A feed pipe, which is arranged in the drum, is used to input the solid-liquid mixture into the drum, and a feed pump is arranged at the feeding port of the feed pipe to control the solid-liquid mixture to enter the The flow rate of the feed pipe, the feed pipe is provided with a first flow sensor to detect the first flow, and the feed pipe is also provided with a viscosity sensor to detect the viscosity value of the solid-liquid mixture; A collector, which includes a first collecting pipe used to collect the separation liquid discharged from the drain opening arranged on the drum and a second collection pipe used to collect the filtrate filtered out by the filter port arranged on the drum. A collection pipe, the first collection pipe is provided with a second flow sensor to detect the second flow, and the second collection pipe is provided with a third flow sensor to detect the third flow; a central control processor, which includes an interconnected viscosity analysis unit, a first correction unit and a second correction unit, The viscosity analysis unit is connected with the viscosity sensor, the power unit and the feed pump, and is used to analyze and obtain the viscosity status of the solid-liquid mixture based on the viscosity value detected by the viscosity sensor, and determine the viscosity status based on the analyzed viscosity status. The adjustment method when adjusting the rotating speed of the drum and the power of the feed pump; The first correction unit is connected with the feed pump, and is used to determine whether the Correcting the power of the feed pump, and determining a correction amount when correcting the power of the feed pump; The second correction unit is connected with the feed pump and the power device of the centrifugal mechanism, and is used for analyzing and obtaining the second viscosity condition by the viscosity analysis unit, according to the first flow difference and through the second The second flow difference calculated from the flow rate and the third flow rate determines the liquid collection state, and corrects the power of the feed pump and the rotational speed of the drum based on the determined liquid collection state. 2. The horizontal spiral discharge filter centrifuge according to claim 1, wherein the viscosity analysis unit compares the viscosity value V with a preset viscosity comparison threshold V0, and analyzes and obtains the obtained value according to the comparison result. The viscosity condition of the solid-liquid mixture, wherein, Under the first viscosity comparison result, the viscosity analysis unit analyzes and acquires the solid-liquid mixture into the first viscosity state; Under the second viscosity comparison result, the viscosity analysis unit analyzes and obtains the solid-liquid mixture into a second viscosity state; Wherein, the first viscosity comparison result is V<V0, and the second viscosity comparison result is V≥V0. 3. The horizontal screw discharge filter centrifuge according to claim 2, characterized in that, the viscosity analysis unit determines when the power of the feed pump is adjusted according to the viscosity of the solid-liquid mixture. power adjustment mode, where, The first power adjustment method is that the viscosity analysis unit adjusts the power of the feed pump to a first power adjustment value P1; The second power adjustment method is that the viscosity analysis unit adjusts the power of the feed pump to a second power adjustment value P2; Wherein, the first power adjustment method needs to meet the first viscosity state of the solid-liquid mixture, and the second power adjustment method needs to satisfy the second viscosity state of the solid-liquid mixture, P1>P2. 4. The horizontal spiral discharge filter centrifuge according to claim 3, characterized in that, the viscosity analysis unit judges the rotational speed when adjusting the rotational speed of the drum according to the viscosity condition of the solid-liquid mixture adjustment method, among which, The first rotation speed adjustment method is that the viscosity analysis unit adjusts the rotation speed of the drum to the first rotation speed adjustment value R1; The second speed adjustment method is that the viscosity analysis unit adjusts the speed of the drum to the second speed adjustment value R2; Wherein, the first rotation speed adjustment method needs to meet the first viscosity state of the solid-liquid mixture, and the second rotation speed adjustment method needs to satisfy the second viscosity state of the solid-liquid mixture, R1<R2. 5. The horizontal screw discharge filter centrifuge according to claim 3, wherein the first correction unit acquires the data obtained by the first flow sensor and the second flow sensor in real time and calculates the first flow rate Difference ΔQ, set ΔQ=Q1-Q2, wherein Q1 represents the first flow rate, Q2 represents the second flow rate, and the first correction unit compares the first flow rate difference ΔQ with the preset Compare the first flow difference comparison threshold ΔQ1 with the second flow difference comparison threshold ΔQ2, determine whether to correct the power of the feed pump according to the comparison result, and determine whether to correct the power of the feed pump When the correction amount, where, Under the first flow comparison result, the first correction unit determines that the power of the feed pump needs to be corrected, and corrects the power of the feed pump to the first value according to the preset first power correction parameter p11 Power correction value P11, set P11=P1-p11; Based on the second flow comparison result, the first correction unit determines that it is not necessary to correct the power of the feed pump; Under the third flow comparison result, the first correction unit determines that the power of the feed pump needs to be corrected, and corrects the power of the feed pump to the second according to the preset first power correction parameter p11 Power correction value P12, set P12=P1+p11; Wherein, the first flow comparison result is △Q≥△Q2, the second flow comparison result is △Q1≤△Q<△Q2, the third flow comparison result is △Q<△Q1, P11<P12 . 6. The horizontal spiral discharge filter centrifuge according to claim 3, wherein the second correction unit acquires the data obtained by the first flow sensor and the second flow sensor in real time and calculates the first flow rate For the difference ΔQ, set ΔQ=Q1-Q2, and obtain the data obtained by the second flow sensor and the third flow sensor in real time and calculate the second flow difference ΔQ', set ΔQ'=Q2 -Q3, wherein, Q1 represents the first flow rate, Q2 represents the second flow rate, Q3 represents the third flow rate, Q1>Q2>Q3. 7. The horizontal screw discharge filter centrifuge according to claim 6, characterized in that, the second correction unit compares the first flow difference ΔQ with a preset third flow difference threshold ΔQ3 for comparison, and compare the second flow difference ΔQ' with the preset fourth flow difference comparison threshold ΔQ4, and determine the liquid collection state according to the comparison result, wherein, If the comparison result satisfies the first preset condition, the second correction unit determines that the liquid collection state is the first liquid collection state; If the comparison result satisfies the second preset condition, the second correction unit determines that the liquid collection state is the second liquid collection state; If the comparison result satisfies the third preset condition, the second correction unit determines that the liquid collection state is a third liquid collection state; Wherein, the first preset condition is △Q≥△Q3 and △Q'<△Q4, the second preset condition is △Q<△Q3 and △Q'<△Q4, and the third preset condition is The conditions are ΔQ≥ΔQ3 and ΔQ'>ΔQ4. 8. The horizontal screw discharge filter centrifuge according to claim 7, characterized in that, the second correction unit judges the power of the feed pump and the power of the drum according to the liquid collection state. The correction method when the speed is corrected, where, The first correction method is that the second correction unit corrects the power of the feed pump to the third power correction value P21 according to the preset second power correction parameter p21, setting P21=P2-p21, and according to the preset The first rotational speed correction parameter r21 corrects the rotational speed of the drum to the first rotational speed correction value R21, setting R21=R2+r21; The second correction method is that the second correction unit corrects the rotational speed of the drum to the first rotational speed correction value R21 according to the preset first rotational speed correction parameter r21, setting R21=R2+r21; The third correction method is that the second correction unit corrects the power of the feed pump to a third power correction value P21 according to the preset second power correction parameter p21, setting P21=P2-p21; Wherein, the first correction method needs to satisfy that the liquid collection state is the first liquid collection state, the second correction method needs to satisfy that the liquid collection state is the second liquid collection state, and the third The correction method needs to satisfy that the liquid collection state is the third liquid collection state. 9. The horizontal screw discharge filter centrifuge according to claim 8, wherein the second correction unit is also used to determine whether the centrifuge is running abnormally according to the determined liquid collection state, wherein, If the liquid collection state is the first liquid collection state, the second correction unit determines that the operation is abnormal. 10. The horizontal screw discharge filter centrifuge according to claim 1, wherein the drum comprises a first drum and a second drum integrally connected, so that the screw pusher will The centrifuged solid is propelled from the first drum to the second drum, and one end of the first drum is provided with a drainage port, so that the internal separation liquid flows out from the drainage port, The second drum is provided with several filter ports to filter the solids pushed to the second drum by the screw propeller.