An intelligent vibrating screen with self-controlled inclination and vibration frequency

Abstract

The present invention discloses an intelligent vibrating screen with self-controlled inclination and vibration frequency, comprising a base, a screen box support, a screen box, a gantry frame and a feed trough. The left end of the screen box support is connected to the base through an angle adjustment shaft, a balance beam is arranged at the upper right end of the screen box support, a gantry frame is fixed to the right end of the base, the middle part of the balance beam is connected to the gantry frame through an electric push rod, and the screen box is installed on the screen box support through a vibration spring. Generally speaking, the present invention has reasonable design, effectively reduces the floor space occupied by the screen, can automatically adjust the inclination angle of the screen according to the amount of mud, can control the vibration frequency of the vibration motor, the compression rubber spring can conveniently and quickly compress or relax the screen, and the double-layer control at the mud feed amount greatly improves the control ability of the feed amount, and has the advantage of extremely high use value.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum drilling auxiliary equipment and relates to a vibrating screen, in particular to an intelligent vibrating screen with self-controlled inclination and vibration frequency. Background Art

[0002] Oil drilling mud, also known as drilling fluid, is recognized as the blood of oil field drilling. Mud has many functions, mainly carrying cuttings from the bottom of the well to the surface. Drilling fluid often contains crude oil, diesel and various oils as well as a large amount of chemical treatment agents. In order to prevent the possible impact of drilling fluid on the environment and ecology, it is required to use harmless and non-toxic drilling fluid. The existing treatment methods mostly use chemical reagents for treatment, which is not only energy-consuming but also pollutes the environment.

[0003] The vibrating screen works by using the reciprocating vibration generated by the vibrator. The upper rotating weight of the vibrator makes the screen surface produce a plane gyratory vibration, while the lower rotating weight makes the screen surface produce a conical gyratory vibration. The combined effect makes the screen surface produce a complex gyratory vibration. The equipment for treating the slurry containing sand, gravel and soil produced during the excavation process is a mud and water treatment system, including a primary screening system for separating large solid stones and mud blocks and a secondary screening system for separating sand, gravel, soil and water. The mud dewatering vibrating screen is the key equipment of the secondary screening system. The high-frequency and small-amplitude movement of the mud dewatering vibrating screen separates water from sand, gravel, soil, etc.

[0004] At present, the existing vibrating screens have the problems of occupying a large area, being inconvenient to use, being unable to monitor the mud screening efficiency in the screen, being unable to efficiently and quickly adjust the inclination angle of the screen according to actual conditions, having poor control over the rate of mud entering the screen box, and being difficult to maintain and replace the screen. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent vibrating screen with self-controlled inclination angle and vibration frequency. The design is reasonable, and the floor space of the vibrating screen can be effectively reduced. The inclination angle of the screen can be automatically adjusted according to the amount of mud, and the vibration frequency of the vibration motor can be controlled. The compression rubber spring can compact or loosen the screen conveniently and quickly. The double-layer control at the mud feed amount greatly improves the control ability of the feed amount, and the screen has extremely high use value.

[0006] The object of the present invention is achieved in this way: an intelligent vibrating screen with self-controlled inclination and vibration frequency, comprising a base, a screen box support, a screen box, a gantry frame, and a feed trough, wherein the left end of the screen box support is connected to the base through an angle adjustment shaft, a balance beam is arranged at the upper right end of the screen box support, a gantry frame is fixed at the right end of the base, the middle part of the balance beam is connected to the gantry frame through an electric push rod, the screen box is installed on the screen box support through a vibration spring, the feed trough is fixed on the base on the upper left side of the screen box, and a feed trough is arranged in the feed trough It is equipped with a flap and a hand valve, a slurry inlet is arranged on the feed trough, a slurry discharge port leading to the screen box is connected to the right side of the feed trough, an upper screen and a lower screen are installed in parallel in the screen box, the upper screen and the lower screen are installed in the screen installation groove inside the screen box through a compression rubber spring, a mud return plate with the left end tilted downward is installed on the lower side of the upper screen, a mud collecting trough is arranged under the lower screen, a vibration motor is installed on the screen box, and the vibration motor and the electric push rod are electrically connected to the PLC control center.

[0007] A baffle plate inclined toward the lower right is fixed in the upper middle part of the feed trough, a through hole is arranged on the baffle plate, a flap plate is arranged above the baffle plate, the upper left end of which is hinged in the feed trough and parallel to the baffle plate, a buffer trough is installed outside the overflow port arranged at the upper right part of the feed trough, a slurry discharge port controlled by a hand valve is arranged at the lower side of the buffer trough, and a flow equalizing plate is arranged at the slurry discharge port.

[0008] The right end of the mud return plate is equipped with two left and right mud collecting troughs spaced a certain distance apart. The mud collecting trough on the left is connected to the first fluid sensing sensor installed on the screen box support through a pipeline, and the mud collecting trough on the right is connected to the second fluid sensing sensor installed on the screen box support through a pipeline. The first fluid sensing sensor and the second fluid sensing sensor are connected to the PLC control center, and the PLC control center controls the movement of the electric push rod according to the sensing signals of the first fluid sensing sensor and the second fluid sensing sensor.

[0009] The slurry inlet is arranged at the bottom or left side of the feed trough.

[0010] The vibration motor is an exciting motor.

[0011] The angle adjustment shaft is installed at the upper middle part of the left end of the screen box support.

[0012] The compression spring comprises an airbag, a dovetail tenon integrally made with the airbag on the upper side of the airbag, and a fixing plate having a dovetail tenon groove adapted to the dovetail tenon on the lower side. An anti-skid pad is arranged between the compression spring and the screen.

[0013] The right side surface of the gantry frame is provided with scales.

[0014] The beneficial effects of the present invention are as follows: an intelligent vibrating screen with self-controlled inclination and vibration frequency is mainly composed of a base, a screen box support, a screen box, a gantry frame and a feed trough. The left end of the screen box support is connected to the base through an angle adjustment shaft, and the screen box support is installed on the base. The screen box support can be rotated around the shaft through the shaft connection to adjust the inclination angle of the screen box support. The angle adjustment shaft is installed in the middle and upper part of the left end of the screen box support. When adjusting the angle of the screen box support, the displacement between the upper opening of the screen box and the slurry discharge port of the feed trough is shortened to avoid mud leakage. A balance beam is provided at the upper right end of the screen box support, and the balance beam and the screen box support are fixed together. A gantry frame is fixed to the right end of the base to fix the gantry frame. A scale is provided on the right side surface of the gantry frame, and the scale can be used to adjust the angle of the screen box support. Visually check the up and down moving distance of the balance beam. The middle part of the balance beam is connected to the gantry frame through an electric push rod. The telescopic movement of the electric push rod drives the balance beam and thus drives the entire screen box support to rotate around the angle adjustment shaft to adjust the inclination angle of the screen. The electric push rod is equipped with a magnetostrictive sensor for recording the movement trajectory of the electric push rod. The movement trajectory of the electric push rod is recorded in detail. The screen box is installed on the screen box support through a vibration spring. The screen box is installed so that it can vibrate on the screen box support. The feed trough is fixed on the base on the upper left side of the screen box. The feed trough is fixed. A flap and a hand valve are installed in the feed trough. The flap and the hand valve are used to effectively control the feeding speed of the slurry. A slurry inlet is provided on the feed trough, and the slurry inlet is set in the feed trough The bottom or left side of the feed trough is connected to a suitable slurry inlet position according to installation needs. A slurry discharge port leading to the screen box is connected to the right side of the feed trough, and the mud is discharged into the screen in the screen box through the slurry discharge port. A baffle inclined to the lower right is fixed on the upper middle part of the feed trough, and a through hole is arranged on the baffle. A flap is arranged above the baffle, and the upper left end is hinged in the feed trough and parallel to the baffle. The mud flows through the through hole, and the angle of the flap is adjusted to effectively control the flow rate of the mud. A buffer trough is installed on the outside of the overflow port arranged at the upper right part of the feed trough, and a slurry discharge port controlled by a portable valve is arranged on the lower side of the buffer trough. The portable valve controls the mud discharge volume again, and at the same time enables the mud to flow to the upper screen and the lower screen respectively. A flow equalizing plate is arranged at the slurry discharge port, and the flow equalizing plate is arranged so that the mud can be evenly dispersed and flow to the screen The screen box is provided with an upper screen and a lower screen which are parallel to each other. The double-layer screen greatly reduces the floor space occupied by the screen and improves the working efficiency of the screen. The upper screen and the lower screen are installed in the screen installation groove on the inner side of the screen box through a compression rubber spring, so that the screen can be compressed and fixed, and the screen can be conveniently replaced and maintained. The compression rubber spring includes an air bag, a dovetail tenon which is integrally made with the air bag on the upper side of the air bag, and a fixing plate with a dovetail tenon groove which is adapted to the dovetail tenon on the lower side. The air bag can compress or relax the screen by quickly inflating and deflating air, which greatly improves the fixing efficiency of the screen. An anti-skid pad is arranged between the compression rubber spring and the screen. The anti-skid pad is used to increase the friction between the compression rubber spring and the screen, thereby ensuring the fixing effect of the screen and further protecting the air bag.A mud return plate with a downward tilt at the left end is installed at the lower side of the upper screen to gather the mud filtered by the upper screen into the mud collection pool for reuse. Two left and right mud collecting tanks with a certain distance between them are installed at the right end of the mud return plate. The mud collecting tank on the left is connected to the first fluid sensing sensor installed on the screen box support through a pipeline, and the mud collecting tank on the right is connected to the second fluid sensing sensor installed on the screen box support through a pipeline. The two mud collecting tanks arranged on the left and right collect and gather the mud that falls from the upper screen and flow to the two fluid sensors through pipelines to sense the amount of mud. The first fluid sensing sensor and the second fluid sensing sensor are connected to the PLC control center. The two fluid sensing sensors transmit the monitored fluid signals to the PLC control center. The PLC control center controls the movement of the electric push rod according to the sensing signals of the first fluid sensing sensor and the second fluid sensing sensor. When there is no liquid sensing in the first fluid sensing sensor and there is liquid sensing in the second fluid sensing sensor, the screen box is maintained. Original state; when the first fluid induction sensor has no liquid induction, and the second fluid induction sensor has no liquid induction, the angle is adjusted first according to the use. When the angle is adjusted to the set value, the exciting motor of the screen box is adjusted from variable frequency to industrial frequency; when the first fluid induction sensor has liquid induction, and the second fluid induction sensor has liquid induction, the electric push rod is shortened, and the inclination angle of the screen is increased. A mud collection tank is set under the lower screen to recycle the mud treated by the screen for easy reuse. The solid (large particles) on the screen are gradually discharged from the right end of the screen through vibration. A vibration motor is installed on the screen box, and the vibration of the screen is driven by the vibration motor. The vibration motor is an exciting motor. The vibration motor and the electric push rod are electrically connected to the PLC control center. The vibration frequency of the vibration motor and the telescopic movement of the electric push rod are controlled by the PLC control center. Circuit protection is performed to avoid overload. The movement of the electric push rod can be manually controlled and adjusted through the PLC control center, or the movement of the electric push rod can be automatically controlled according to the induction signals of the two fluid induction sensors. ,

[0015] In general, the present invention has a reasonable design, effectively reduces the footprint of the vibrating screen, can automatically adjust the inclination angle of the screen according to the amount of mud, can control the vibration frequency of the vibration motor, and the compression rubber spring can conveniently and quickly compress or relax the screen. The double-layer control of the mud feed amount greatly improves the control ability of the feed amount, and has the advantage of extremely high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the feed trough of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the compression rubber spring of the present invention.

[0019] Figure 4 It is a schematic structural diagram of the first fluid sensing sensor and the second fluid sensing sensor of the present invention.

[0020] In the figure: 1, base 2, screen box support 3, screen box 4, gantry frame 5, feed trough 6, angle adjustment shaft 7, balance beam 8, electric push rod 9, flap 10, portable valve 11, slurry inlet 12, slurry discharge port 13, upper screen 14, lower screen 15, compression rubber spring 16, screen installation groove 17, mud return plate 18, vibration motor 19, PLC control center 20, baffle 21, through hole 22, overflow port 23, buffer tank 24, mud collecting tank 25, first fluid sensing sensor 26, second fluid sensing sensor 27, air bag 28, dovetail tenon 29, dovetail tenon groove 30, fixing plate 31, anti-slip pad 32, scale. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] As attached Figure 1-4 As shown, an intelligent vibrating screen with self-controlled inclination and vibration frequency comprises a base 1, a screen box support 2, a screen box 3, a gantry frame 4, and a feed trough 5. The left end of the screen box support 2 is connected to the base 1 through an angle adjustment shaft 6, a balance beam 7 is arranged at the upper right end of the screen box support 2, a gantry frame 4 is fixed at the right end of the base 1, and the middle part of the balance beam 7 is connected to the gantry frame 4 through an electric push rod 8. The screen box 3 is installed on the screen box support 2 through a vibration spring, and the feed trough 5 is fixed on the base 1 on the upper left side of the screen box 3. A flap 9 and a portable valve 10 are installed in the feed trough 5. The feed trough 5 is provided with a slurry inlet 11, and the right side of the feed trough 5 is connected with a slurry discharge port 12 leading to the screen box 3. The screen box 3 is installed with a parallel upper screen 13 and a lower screen 14, and the upper screen 13 and the lower screen 14 are installed in a screen installation groove 16 on the inner side of the screen box 3 through a compression rubber spring 15. A mud return plate 17 with a downward tilt at the left end is installed on the lower side of the upper screen 13, and a mud collecting tank is arranged below the lower screen 14. A vibration motor 18 is installed on the screen box 3, and the vibration motor 18 and the electric push rod 8 are electrically connected to the PLC control center 19.

[0024] A baffle plate 20 inclined toward the lower right is fixed in the upper middle part of the feed trough 5, a through hole 21 is provided on the baffle plate 20, a flap 9 is provided above the baffle plate 20, the upper left end of which is hinged in the feed trough 5 and parallel to the baffle plate 20, a buffer trough 23 is installed outside the overflow port 22 provided in the upper right part of the feed trough 5, a slurry discharge port 12 controlled by a hand valve 10 is provided at the lower side of the buffer trough 23, and a flow equalizing plate is provided at the slurry discharge port 12.

[0025] The right end of the mud return plate 17 is equipped with two left and right mud collecting tanks 24 spaced a certain distance apart. The mud collecting tank 24 on the left is connected to the first fluid sensing sensor 25 installed on the screen box support 2 through a pipeline, and the mud collecting tank 24 on the right is connected to the second fluid sensing sensor 26 installed on the screen box support 2 through a pipeline. The first fluid sensing sensor 25 and the second fluid sensing sensor 26 are connected to the PLC control center 19, and the PLC control center 19 controls the movement of the electric push rod 8 according to the sensing signals of the first fluid sensing sensor 25 and the second fluid sensing sensor 26.

[0026] The slurry inlet 11 is arranged on the left side of the feed trough 5 .

[0027] The vibration motor 18 is a vibration motor.

[0028] The angle adjustment shaft 6 is installed at the upper middle part of the left end of the screen box support 2 .

[0029] The compression spring 15 includes an airbag 27, a dovetail tenon 28 integrally made with the airbag 27 on the upper side of the airbag 27, and a fixing plate 30 having a dovetail tenon groove 29 adapted to the dovetail tenon 28 on the lower side. An anti-slip pad 31 is provided between the compression spring 15 and the screen.

[0030] A scale 32 is arranged on the right side surface of the gantry frame 4 .

[0031] The present invention is used as follows: a self-controlled inclination vibration frequency intelligent vibrating screen, mainly composed of a base, a screen box support, a screen box, a gantry frame and a feed trough, the left end of the screen box support is connected to the base through an angle adjustment shaft, the screen box support is installed on the base, and the screen box support is connected to the shaft so that the screen box support can rotate around the shaft to adjust the inclination angle of the screen box support, the angle adjustment shaft is installed in the middle and upper part of the left end of the screen box support, and the displacement between the upper opening of the screen box and the slurry discharge port of the feed trough is shortened when adjusting the angle of the screen box support to avoid mud leakage, a balance beam is provided at the upper right end of the screen box support, the balance beam and the screen box support are fixed together, a gantry frame is fixed to the right end of the base, the gantry frame is fixed, and a scale is provided on the right side surface of the gantry frame, and the balance beam can be intuitively viewed through the scale. The up and down moving distance, the middle part of the balance beam is connected to the gantry frame through an electric push rod, and the telescopic movement of the electric push rod drives the balance beam to drive the entire screen box support to rotate around the angle adjustment shaft to adjust the inclination angle of the screen. The electric push rod is equipped with a magnetic sensor for recording the movement trajectory of the electric push rod, and the movement trajectory of the electric push rod is recorded in detail. The screen box is installed on the screen box support through a vibration spring. The screen box is installed so that the screen box can vibrate on the screen box support. The feed trough is fixed on the base on the upper left side of the screen box. The feed trough is fixed. A flap and a hand valve are installed in the feed trough. The flap and the hand valve are used to effectively control the feeding speed of the mud. A slurry inlet is provided on the feed trough. The slurry inlet is set at the bottom or left side of the feed trough. According to the installation It is necessary to select a suitable slurry inlet position. A slurry discharge port leading to the screen box is connected to the right side of the feed trough, and the mud is discharged into the screen in the screen box through the slurry discharge port. A baffle inclined to the lower right is fixed on the upper middle part of the feed trough, and a through hole is arranged on the baffle. A flap is arranged above the baffle, and the upper left end is hinged in the feed trough and parallel to the baffle. The mud flows through the through hole, and the angle of the flap is adjusted to effectively control the flow rate of the mud. A buffer trough is installed on the outside of the overflow port arranged on the upper right part of the feed trough, and a slurry discharge port controlled by a hand valve is arranged on the lower side of the buffer trough. The hand valve controls the mud discharge volume again, and at the same time enables the mud to flow to the upper screen and the lower screen respectively. A flow equalizing plate is arranged at the slurry discharge port. The flow equalizing plate is arranged so that the mud can be evenly dispersed to flow to the screen. The screen box is equipped with upper and lower screens parallel to each other. The lower screen and the double-layer screen greatly reduce the floor space of the screen and improve the working efficiency of the screen. The upper and lower screens are installed in the screen installation groove on the inner side of the screen box through the compression rubber spring, which can compress and fix the screen and facilitate the replacement and maintenance of the screen. The compression rubber spring includes an air bag, a dovetail tenon integrally made with the air bag on the upper side of the air bag, and a fixing plate with a dovetail tenon groove adapted to the dovetail tenon on the lower side. The air bag can compress or relax the screen by quickly inflating and deflating air, which greatly improves the fixing efficiency of the screen. An anti-skid pad is arranged between the compression rubber spring and the screen. The anti-skid pad is used to increase the friction between the compression rubber spring and the screen to ensure the fixing effect of the screen and further protect the air bag. A mud return plate with its left end tilted downward is installed on the lower side of the upper screen.The mud filtered by the upper screen is gathered into the mud collection pool for reuse. Two mud collecting tanks are installed on the right end of the mud return plate at a certain distance. The mud collecting tank on the left is connected to the first fluid sensing sensor installed on the screen box support through a pipeline, and the mud collecting tank on the right is connected to the second fluid sensing sensor installed on the screen box support through a pipeline. The two mud collecting tanks arranged on the left and right collect and gather the mud screened by the upper screen and flow to the two fluid sensors through pipelines to sense the mud volume. The first fluid sensing sensor and the second fluid sensing sensor are connected to the PLC control center. The two fluid sensing sensors transmit the monitored fluid signals to the PLC control center. The PLC control center controls the movement of the electric push rod according to the sensing signals of the first fluid sensing sensor and the second fluid sensing sensor. When the first fluid sensing sensor has no liquid sensing and the second fluid sensing sensor has liquid sensing, the original state of the screen box is maintained; when the first fluid sensing sensor has no liquid sensing, the second fluid sensing sensor has liquid sensing, and the original state of the screen box is maintained; when the first fluid sensing The sensor should have no liquid induction, and the second fluid induction sensor has no liquid induction. According to the use, the angle is adjusted first. When the angle is adjusted to the set value, the exciting motor of the screen box is adjusted from variable frequency to industrial frequency; when the first fluid induction sensor has liquid induction, the second fluid induction sensor has liquid induction, shorten the electric push rod, increase the inclination angle of the screen, and set a mud collection tank under the lower screen to recycle the mud treated by the screen for easy reuse. The solid (large particles) on the screen are gradually discharged from the right end of the screen through vibration. A vibration motor is installed on the screen box, and the vibration of the screen is driven by the vibration motor. The vibration motor is an exciting motor. The vibration motor and the electric push rod are electrically connected to the PLC control center. The vibration frequency of the vibration motor and the telescopic movement of the electric push rod are controlled by the PLC control center. Circuit protection is performed to avoid overload. The movement of the electric push rod can be manually controlled and adjusted through the PLC control center, or the movement of the electric push rod can be automatically controlled according to the induction signals of the two fluid induction sensors. ,

[0032] In general, the present invention has a reasonable design, effectively reduces the footprint of the vibrating screen, can automatically adjust the inclination angle of the screen according to the amount of mud, can control the vibration frequency of the vibration motor, and the compression rubber spring can conveniently and quickly compress or relax the screen. The double-layer control of the mud feed amount greatly improves the control ability of the feed amount, and has the advantage of extremely high use value.

Claims

1. An intelligent vibrating screen with self-controlled inclination and vibration frequency, comprising a base, a screen box support, a screen box, a gantry frame, and a feed trough, characterized in that: The left end of the screen box support is connected to the base through an angle adjustment shaft, a balance beam is provided at the upper right end of the screen box support, a gantry frame is fixed at the right end of the base, the middle part of the balance beam is connected to the gantry frame through an electric push rod, the screen box is installed on the screen box support through a vibration spring, the feed trough is fixed on the base on the upper left side of the screen box, a flap and a hand valve are installed in the feed trough, a slurry inlet is provided on the feed trough, a slurry discharge port leading to the screen box is connected to the right side of the feed trough, an upper screen and a lower screen are installed in parallel in the screen box, the upper screen and the lower screen are installed in the screen installation groove on the inner side of the screen box through a compression rubber spring, a mud return plate with a downward tilt at the left end is installed on the lower side of the upper screen, a mud collecting tank is provided below the lower screen, a vibration motor is installed on the screen box, and the vibration motor and the electric push rod are electrically connected to the PLC control center; A baffle plate inclined to the lower right is fixed in the upper middle part of the feed trough, a through hole is arranged on the baffle plate, a flap plate is arranged above the baffle plate, the upper left end of which is hinged in the feed trough and parallel to the baffle plate, a buffer trough is installed outside the overflow port arranged at the upper right part of the feed trough, a slurry discharge port controlled by a hand valve is arranged at the lower side of the buffer trough, and a flow equalizing plate is arranged at the slurry discharge port; The right end of the mud return plate is equipped with two left and right mud collection tanks spaced a certain distance apart. The mud collection tank on the left is connected to the first fluid sensing sensor installed on the screen box support through a pipeline, and the mud collection tank on the right is connected to the second fluid sensing sensor installed on the screen box support through a pipeline. The first fluid sensing sensor and the second fluid sensing sensor are connected to the PLC control center, and the PLC control center controls the movement of the electric push rod according to the sensing signals of the first fluid sensing sensor and the second fluid sensing sensor; the two mud collection tanks arranged on the left and right collect and converge the mud falling from the upper screen, and flow through pipelines to the two fluid sensors to sense the mud volume; The compression spring comprises an airbag, a dovetail tenon integrally made with the airbag on the upper side of the airbag, and a fixing plate having a dovetail tenon groove adapted to the dovetail tenon on the lower side. An anti-skid pad is arranged between the compression spring and the screen.

2. The intelligent vibrating screen with self-controlled inclination and vibration frequency according to claim 1, characterized in that: The slurry inlet is arranged at the bottom or left side of the feed trough.

3. The intelligent vibrating screen with self-controlled inclination and vibration frequency according to claim 1, characterized in that: The vibration motor is an exciting motor.

4. The intelligent vibrating screen with self-controlled inclination and vibration frequency according to claim 1, characterized in that: The angle adjustment shaft is installed at the upper middle part of the left end of the screen box support.

5. The intelligent vibrating screen with self-controlled inclination and vibration frequency according to claim 1, characterized in that: The right side surface of the gantry frame is provided with scales.

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