CN111175083A - Sampling equipment for cement production - Google Patents
Sampling equipment for cement production Download PDFInfo
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- CN111175083A CN111175083A CN202010014244.0A CN202010014244A CN111175083A CN 111175083 A CN111175083 A CN 111175083A CN 202010014244 A CN202010014244 A CN 202010014244A CN 111175083 A CN111175083 A CN 111175083A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
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Abstract
A sampling device for cement production comprises a switching power supply, a time control switch, a shell, a control circuit and a sampling mechanism; sampling pipes are arranged at the side end of the cement storage tank, each sampling pipe is provided with an electromagnetic valve, and the electromagnetic valves are connected with the vertical pipes; the sampling mechanism comprises a blower, an electromagnetic valve, a water tank and a plurality of sampling bag devices, wherein the blower is arranged in the shell and is provided with a transverse pipe; a plurality of discharging pipes, electromagnetic valves, lower discharging pipes, an upper plate and upper permanent magnets are arranged below the transverse pipes; the shell is provided with an exhaust pipe; each sampling bag device comprises a cloth bag and a supporting cylinder, wherein the upper end of the supporting cylinder is provided with a lower plate and a lower permanent magnet; the sampling bag device is sucked under the upper plate; the switching power supply, the time control switch and the control circuit are arranged in the element box and are electrically connected with the electric blower, the sampling tube side and the electromagnetic valve of the sampling mechanism. The invention can automatically sample cement samples in multiple layers from top to bottom of the tank body, ensures the data after the assay, and represents all the cement property data in the tank body as comprehensively as possible.
Description
Technical Field
The invention relates to the field of auxiliary equipment used in cement production, in particular to sampling equipment for cement production.
Background
The vertical bulk cement storage tank is a relatively extensive equipment used in cement production plants, and is mainly used for storing bulk cement. In practical situations, under the influence of the surrounding environment and the influence of the quality of the vertical bulk cement storage tank, when the storage condition of the vertical bulk cement storage tank is relatively good, the storage time of cement can be relatively long, and the quality of the cement can be guaranteed, otherwise, the storage time can be shortened, and the quality of the stored cement can be reduced. In order to master the quality of cement stored in the vertical bulk cement storage tank, relevant inspectors of manufacturers can sample and test bulk cement stored in the vertical bulk cement storage tank at certain intervals, and further obtain property data of the cement.
Receive the high structural limitation of current vertical bulk cement holding vessel, when sampling personnel carries out jar internal cement sampling at present, can only sample the cement sample of jar internal upper end and lower extreme (open the upper cover sampling and open the electronic auger sampling of lower extreme), can't obtain more jar internal middle part cement samples, and then cause the sample of sampling single, the data after the chemical examination can not truly represent jar internal all cement property data, has brought the restriction to the effective storage of cement. When the property of the middle cement in the tank body is changed (for example, the middle side end of the tank body is corroded to form micropores, rainwater or humid air enters the tank body through the micropores), the quality of factory cement is affected when sampling and testing personnel do not check the property in time, and potential safety hazards are brought to the building after the construction of an end user; and in the sampling, the cement sample of the upper end in the sampling tank body needs a climbing tool and brings inconvenience to sampling personnel. Based on the above, it is particularly necessary to provide a device which can sample the cement samples at the upper and lower parts in the vertical bulk cement storage tank and can also sample the cement samples at each layer in the middle.
Disclosure of Invention
In order to overcome the defects that the sampling personnel can not sample the cement sample at the middle layer in the vertical bulk cement storage tank after sampling and assay due to the limit of the structure of the existing vertical bulk cement storage tank, the obtained cement property data stored in the vertical bulk cement storage tank after sampling and assay are single, and more comprehensive property data can not be provided, when the shape of the cement in the middle part of the vertical bulk cement storage tank is changed due to various reasons, the sampling and assay personnel can not know the situation at the first time, the quality of the delivered product is reduced, the influence is brought to the safe use of the cement by terminal customers, and the sampling needs to adopt a climbing tool, the inconvenience is brought to the sampling personnel and the potential safety hazard exists, the invention provides a plurality of sampling pipes which are arranged at the side end of the vertical bulk cement storage tank from top to bottom at certain intervals, in application, the manual climbing sampling is not, under the effect of control circuit etc. at an interval of certain time quantum, sampling mechanism can automatic work carry out jar internal multilayer cement sample sampling from top to bottom to guaranteed that follow-up laboratory test personnel data more comprehensively represent jar the property data of internal whole cement as far as, and guaranteed the outgoing from the factory quality of cement as far as, reach the sampling equipment that is used for cement manufacture usefulness of intelligent work purpose.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a sampling device for cement production comprises a switching power supply, a time control switch and a shell, and is characterized by also comprising a control circuit and a sampling mechanism; a plurality of sampling pipes are arranged at the side end of the vertical bulk cement storage tank at intervals from top to bottom, one side of each sampling pipe is provided with an electromagnetic valve, and exhaust pipes of the electromagnetic valves are connected with a plurality of side pipes which are distributed vertically in a vertical pipe; the shell is arranged on a lower support frame of the vertical bulk cement storage tank; the lower end of the shell is provided with a placing station isolated from the inner space of the shell; the sampling mechanism comprises electric blowers, electromagnetic valves, a water tank and sampling bag devices, the sampling bag devices are the same, the electric blowers are arranged in the shell, and transverse pipes are arranged on air outlet pipes of the electric blowers; the lower end of the transverse pipe is provided with a plurality of discharging pipes at intervals, the lower end of each discharging pipe is provided with an electromagnetic valve, and the lower end of each electromagnetic valve is provided with a lower discharging pipe, an upper plate and an upper permanent magnet; an exhaust pipe is arranged in the middle of the upper end of a movable cover of the shell, the other end of the exhaust pipe is positioned at the upper end of the placing station, and the water tank is positioned at the lower end of the exhaust pipe; each sampling bag device comprises a cloth bag and a supporting cylinder, the lower end of the supporting cylinder is of an open structure, the cloth bag is arranged in the supporting cylinder, and the upper end of the supporting cylinder is provided with a lower plate and a lower permanent magnet; each sampling bag device is sucked under the upper plates; the switching power supply, the time control switch and the control circuit are arranged in the element box; the time control switch, the electric blower, the switching power supply, the plurality of electromagnetic valves on the sampling tube side and the plurality of electromagnetic valves of the sampling mechanism are electrically connected.
Furthermore, the number of the electromagnetic valves on the side of the sampling pipe is the same as that of the electromagnetic valves of the sampling mechanism, and the number of the sampling bag devices is the same.
Further, the sampling pipe is communicated with the inner space of the vertical bulk cement storage tank body.
Further, the polarity of the lower end of the upper magnet is opposite to that of the upper end of the lower magnet.
Further, the switching power supply is an alternating current to direct current switching power supply module.
Furthermore, the time control switch is a microcomputer time control switch.
Further, the control circuit comprises a single chip microcomputer module and a relay, wherein the main control chip is STM32F103C8T6, and the multi-path power output end of the single chip microcomputer module is connected with the two ends of the power input of the relays respectively.
The invention has the beneficial effects that: when the vertical bulk cement storage tank is used, manual ascending sampling is not needed, the use is convenient and the safety is higher, under the action of a time control switch, the electric blower and the control circuit can be powered to work in a required time period, air with higher exhaust flow speed can be exhausted from the air outlet pipe after the electric blower is powered to work, negative pressure suction force can be generated in the sampling pipe due to the rapid flow of air flow after the air outlet pipe is powered to be exhausted through the plurality of electromagnetic valves of the sampling mechanism and the cloth bags of the sampling bag devices, and therefore cement samples with different heights in the vertical bulk cement storage tank can respectively enter the cloth bags of the corresponding sampling bag devices through the plurality of electromagnetic valves on the left sides of the plurality of sampling pipes to finish cement sampling; the air flowing out of the cloth bag can enter the water tank, and cement dust in the air is effectively absorbed by water in the water tank, so that the dust is prevented from causing environmental pollution. The invention can automatically work and sample multiple layers of cement samples from top to bottom in the tank body, thereby ensuring the data after the subsequent chemical examination by chemical examination personnel, representing the property data of all cement in the tank body more comprehensively as much as possible, ensuring the delivery quality of the cement as much as possible and achieving the purpose of intelligent operation. Based on the above, the invention has good application prospect.
Drawings
The invention is further illustrated below with reference to the figures and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of one sampling bag device in the sampling mechanism of the invention.
Fig. 3 is a circuit diagram of the present invention.
Detailed Description
As shown in fig. 1 and 2, a sampling device for cement production comprises a switching power supply 1, a time-controlled switch 2, a rectangular shell 3, a control circuit 4 and a sampling mechanism 5; six sampling pipes 7 are transversely welded at the left side end of a vertical bulk cement storage tank 6 from top to bottom at a certain distance, an electromagnetic valve 8 is respectively installed on the left side of each sampling pipe 7, exhaust pipes of the six electromagnetic valves 8 are respectively connected with a side pipe of a vertical pipe 12 at the right side end through a pipeline and a pipeline joint, the upper end of the vertical pipe 12 is of a closed structure, and the lower end of the vertical pipe 12 is of an open structure; a rectangular supporting plate 61 is transversely welded at the left end of a lower supporting frame of the vertical bulk cement storage tank 6, and a shell is arranged at the upper end of the supporting plate 61 through a screw and a nut; an inwards concave rectangular space is arranged at the left lower end of the front side of the shell 3 and serves as a placing station 31 (communicated with the external atmosphere), and the placing station 31 is isolated from the space in the shell 3; the sampling mechanism 5 comprises an electric blower 51, an electromagnetic valve 52, a water tank 53 and a sampling bag device 54, the sampling bag device 54 comprises six same sampling bag devices, the electric blower 51 is transversely installed at the front right end in the shell 3 through a screw nut, an air inlet pipe of the electric blower 51 is positioned outside the lower end of the shell 3 (communicated with the external atmosphere), a transverse pipe 9 is transversely welded on an air outlet pipe of the electric blower 51 and communicated with the inside of the transverse pipe 9, and the left end of the transverse pipe 9 is of a closed structure; six discharge pipes 91 are welded at the lower end of the transverse pipe 9 at a certain distance, an electromagnetic valve 52 is installed at the lower end of each discharge pipe 91, a lower discharge pipe 101 is arranged at the lower end of each electromagnetic valve 52, a circular upper plate 102 with an opening in the middle is welded at the lower end of each lower discharge pipe 101, the opening in the middle of the upper plate 102 is communicated with the inner space of the lower discharge pipe 101, a circular upper permanent magnet 103 is adhered to the lower end of each upper plate 102 through glue, and the opening in the middle of the upper magnet 103 is aligned with the opening in the middle of the upper plate 102; an exhaust pipe 11 communicated with the inner space of the shell is welded in the middle of the upper end of the movable cover of the shell 3, the other end of the exhaust pipe 11 is welded at the upper end of the middle of the placing station 31, the lower end of the exhaust pipe is positioned at the inner side end of the upper part of the placing station 31, the water tank 53 is filled with water and placed at the lower end of the exhaust pipe 11, and the lower end of the exhaust pipe 11 is positioned in the water tank 53, and; each sampling bag device comprises a cloth bag 541 and a support tube 542, the front side and the rear side of the lower end of the support tube 542 are of an open structure, the outer side of the upper end of the cloth bag 541 is mounted at the upper end in the support tube 542 in an adhesive bonding or screw nut fixing mode, the upper end of the support tube 542 is welded with a circular lower plate 543 with an opening in the middle part, the upper end of the lower plate 543 is bonded with a circular lower permanent magnet 544 with an opening in the middle part by adhesive, and the middle position of the opening in the middle part of the lower magnet 544 is aligned with the middle position of the opening in the; each sampling bag device 54 is attracted under the upper magnet 103 at the lower end of the upper plate through the lower magnet 544; the switching power supply 1, the time control switch 2 and the control circuit 4 are installed on a circuit board, the circuit board is installed in an element box 13, and the element box 13 is installed in the right rear end of the shell 3. The number of left side solenoid valves 52 of the sampling pipes and the number of sampling mechanism solenoid valves 7 are the same, and the number of sampling bag assemblies 54 is the same. The sampling pipe 7 is communicated with the inner space of the vertical bulk cement storage tank body 6. The polarity of the lower end of the upper magnet 103 is opposite to the polarity of the upper end of the lower magnet 544.
As shown in FIG. 3, the switching power supply A is a finished product of a brand bright weft AC 220V-to-12V DC switching power supply module with the power of 500W. The time control switch A1 is a microcomputer time control switch finished product with the brand of CHNT/Zhengtai and the model of KG316T, the microcomputer time control switch finished product A1 is provided with a liquid crystal display screen, and also provided with seven cancel/recovery, time correction, week correction, automatic/manual, timing and clock keys, two power input ends 1 and 2 pins, two power output ends 3 and 4 pins, the numbers displayed by the liquid crystal display screen after being electrified are used for a user to operate the seven keys respectively, the time of the power output ends 3 and 4 pins for outputting power can be set, the microcomputer time control switch finished product has a memory function, and the power failure of an external power supply can not cause the change of an internally set time program as long as the secondary setting adjustment is not carried out. The control circuit comprises a finished single-chip microcomputer module A2, relays K1, K2, K3, K4, K5 and K6, wherein a main control chip is STM32F103C8T6, the finished single-chip microcomputer module A2 is connected through circuit board wiring, the finished single-chip microcomputer module A2 is provided with two power supply input ends 1 and 2 pins, six power supply output ends 3 and 4 pins, 5 and 6 pins, 7 and 8 pins, 9 and 10 pins, 11 and 12 pins, 13 and 14 pins and two ends of power supply input ends of six relays K1, K2, K3, K4, K5 and K6 are connected through leads. The power input two ends 1 and 2 of the time control switch A1 are respectively connected with two poles of an alternating current 220V power supply through leads, the power output two ends 3 and 4 of the time control switch A1 are respectively connected with the power input two ends 1 and 2 of the switch power supply A and the power input two ends of the electric blower M through leads, the power output two ends 3 and 4 of the switch power supply A, the power input two ends 1 and 2 of the singlechip module A2 and the control power input two ends of the control circuit are respectively connected with the control power input ends of the relays K1, K2, K3, K4, K5 and K6 through leads; six electromagnetic valves DC1, DC2, DC3, DC4, DC5 and DC6 on the left side of the sampling pipe are respectively connected with two power input ends of six electromagnetic valves DC7, DC8, DC9, DC10, DC11 and DC12 of a sampling mechanism in parallel through leads, and two normally open contact ends of six power output end relays K1, K2, K3, K4, K5 and K6 of a control circuit are respectively connected with two power input ends of twelve electromagnetic valves DC1, DC7, DC2, DC8, DC3, DC9, DC4, DC10, DC5, DC11, DC6 and DC12 which are connected in parallel through leads.
As shown in fig. 1, 2 and 3, before the present invention is used, a sampling person sets the time for outputting power from both ends of the power output of the time controlled switch a1 as required (for example, sampling is performed every three days, and power is output for 21 seconds from pins 3 and 4 of the time controlled switch a1 every three days). After the internal timing time of the time control switch A1 is up, the pins 3 and 4 can output power to enter the pins 1 and 2 at the power input ends of the switch power supply A and the power input ends of the electric blower M of the sampling mechanism 5, so that the switch power supply A and the electric blower M are in an electrified working state; after the switching power supply A is electrified, a stable 12V direct-current power supply is output under the action of an internal circuit of the switching power supply A and enters the two ends of the power supply input of the control circuit, and after the electric blower M is electrified and works, the air outlet pipe of the electric blower M discharges air with high flow velocity and enters the transverse pipe 9. After the control electricity is electrified to work, six power supply output ends 3 and 4 pins, 5 and 6 pins, 7 and 8 pins, 9 and 10 pins, 11 and 12 pins and 13 and 14 pins of the control electricity are firstly used for outputting 6-second power supply to enter two power supply input ends of a relay K1, then the 3 and 4 pins output 3-second power supply to enter two power supply input ends of five relays K2, K3, K4, K5 and K6 in sequence, so that the relay K1 is electrified to attract for 6 seconds first, and then the relays K2, K3, K4, K5 and K6 are electrified to attract for 3 seconds in sequence; because two normally open contact ends of the relays K1, K2, K3, K4, K5 and K6 and two input ends of twelve parallel electromagnetic valves DC1 and DC7, DC2 and DC8, DC3 and DC9, DC4 and DC10, DC5 and DC11, DC6 and DC12 are respectively connected by leads, within the first 6 seconds, the electromagnetic valve DC1 at the uppermost end of the left side of the vertical bulk cement storage tank 6 and the electromagnetic valve DC7 of the sampling mechanism can be electrically operated to open the internal valve core thereof within 6 seconds, so that the air flow blown out by the electric blower M can be blown out through the transverse pipe 9, the discharge pipe 91 at the upper end of the electromagnetic valve DC7 and the cloth bag 541 at the lower end of the electromagnetic valve DC 7; in the process, flowing air flow can generate negative pressure in the vertical pipe 12, so that negative pressure can be formed in the uppermost sampling pipe 7 on the left side of the vertical bulk cement storage tank 6, the negative pressure acts on a cement sample on the upper portion in the left side of the vertical bulk cement storage tank 6, the cement sample on the upper portion in the left side of the vertical bulk cement storage tank 6 can enter a first cloth bag 541 at the lower end of the electromagnetic valve DC7 from the uppermost sampling pipe 7 on the left side of the vertical bulk cement storage tank 6, the electromagnetic valve DC1 with an opened valve core, the vertical pipe 12 and the electromagnetic valve DC7 with an opened valve core, and the cement sample can be remained in the cloth bag 541 only because the cloth bag can pass air and can not pass the cement sample, so that the cement sampling in the uppermost end on the left side of; the air exhausted from the cloth bag 541 enters the casing 3 through the opening at the lower end of the supporting cylinder 542. After the interval of 6 seconds, the electromagnetic valves DC1 and DC7 lose power and do not work any more, the internal valve cores are closed, then the second electromagnetic valve DC2 positioned on the left side of the vertical bulk cement storage tank 6 from top to bottom and the electromagnetic valve DC8 of the sampling mechanism can be opened by the electric power within 3 seconds, and thus, the air flow blown out by the electric blower M can be blown out through the transverse pipe 9, the discharge pipe 91 at the upper end of the electromagnetic valve DC8 and the cloth bag 541 at the lower end of the electromagnetic valve DC 8; in the process, the flowing air flow can generate negative pressure in the vertical pipe 12, so that the interior of the second sampling pipe 7 positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom can also form negative pressure, the negative pressure acts on the second layer of cement samples positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the part of the second layer of cement samples positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom can enter the second 541 cloth bag at the lower end of the electromagnetic valve DC8 from the second sampling pipe 7 positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the electromagnetic valve DC2 with the opened valve core, the vertical pipe 12 and the electromagnetic valve DC8 with, because the cloth bag only passes through the air and can not pass through the cement sample, the cement sample can be remained in the cloth bag 541, the sampling of the second layer of cement sample from top to bottom in the left side of the vertical bulk cement storage tank 6 is completed, and the air discharged from the cloth bag 541 enters the shell 3 through the opening at the lower end of the supporting cylinder 542.
As shown in fig. 1, 2 and 3, the electromagnetic valves DC2 and DC8 are powered on to work, after 3 seconds, the electromagnetic valves DC2 and DC8 are powered off and do not work any more, and the internal valve cores thereof are closed, and then the electromagnetic valve DC3 which is located at the left side of the vertical bulk cement storage tank 6 from top to bottom and the electromagnetic valve DC9 of the sampling mechanism are powered on to work for 3 seconds, so that the air flow blown out by the electric blower M is blown out through the transverse pipe 9, the discharge pipe 91 at the upper end of the electromagnetic valve DC9 and the cloth bag 541 at the lower end of the electromagnetic valve DC 9; in the process, the flowing air flow can generate negative pressure in the vertical pipe 12, so that the negative pressure can be formed in the third sampling pipe 7 positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the negative pressure acts on the third layer of cement samples positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the third layer of cement samples at the left side of the vertical bulk cement storage tank 6 from top to bottom can enter the third cloth bag 541 at the lower end of the electromagnetic valve DC9 from the third sampling pipe 7 positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the electromagnetic valve DC3 with the opened valve core, the vertical pipe 12 and the electromagnetic valve DC9 with the opened valve, because the cloth bag only passes through the air and can not pass through the cement sample, the cement sample can be remained in the cloth bag 541, the third layer of cement sample sampling from top to bottom in the left side of the vertical bulk cement storage tank 6 is completed, and the air discharged from the cloth bag 541 enters the shell 3 through the opening at the lower end of the supporting cylinder 542. The electromagnetic valves DC3 and DC9 are powered on to work, after 3 seconds, the electromagnetic valves DC3 and DC9 are powered off and do not work, the inner valve cores are closed, then, the electromagnetic valve DC4 which is positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom and the electromagnetic valve DC10 of the sampling mechanism are powered on to work for 3 seconds, and the inner valve cores are opened, so that air flow blown out by the electric blower M is blown out through the transverse pipe 9, the discharge pipe 91 at the upper end of the electromagnetic valve DC10 and the cloth bag 541 at the lower end of the electromagnetic valve DC 10; in the process, the flowing air flow can generate negative pressure in the vertical pipe 12, so that negative pressure can be formed in the fourth sampling pipe 7 positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the negative pressure acts on the fourth layer of cement samples positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the fourth layer of cement samples positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom enter a fourth 541 cloth bag at the lower end of the electromagnetic valve DC10 from the left side of the vertical bulk cement storage tank 6 from top to the fourth sampling pipe 7, the electromagnetic valve DC4 with the opened valve core, the vertical pipe 12 and the electromagnetic valve DC10 with the opened valve core, because the cloth bag only passes through the air and can not pass through the cement sample, the cement sample can be remained in the cloth bag 541, the fourth layer of cement sample sampling from top to bottom in the left side of the vertical bulk cement storage tank 6 is completed, and the air exhausted from the cloth bag 541 enters the shell 3 through the opening at the lower end of the supporting cylinder 542. The electromagnetic valves DC4 and DC10 are powered on to work, after 3 seconds, the electromagnetic valves DC4 and DC10 are powered off and do not work, the inner valve cores of the electromagnetic valves DC5 and the electromagnetic valve DC11 of the sampling mechanism are powered on to work for 3 seconds, and then the inner valve cores of the electromagnetic valves DC5 and the electromagnetic valve DC11 are powered on to work, so that air flow blown out by the electric blower M is blown out through the transverse pipe 9, the discharge pipe 91 at the upper end of the electromagnetic valve DC11 and the cloth bag 541 at the lower end of the electromagnetic valve DC 11; in the process, the flowing air flow can generate negative pressure in the vertical pipe 12, so that negative pressure can be formed in the fifth sampling pipe 7 positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the negative pressure acts on the fifth cement sample positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom, the fifth cement sample part positioned at the left side of the vertical bulk cement storage tank 6 from top to bottom enters the fifth 541 cloth bag at the lower end of the electromagnetic valve DC11 from the left side of the vertical bulk cement storage tank 6 from top to the fifth sampling pipe 7, the electromagnetic valve DC5 with the opened valve core, the vertical pipe 12 and the electromagnetic valve DC11 with the opened valve core, because the cloth bag only passes through the air and cannot pass through the cement sample, the cement sample is retained in the cloth bag 541, fifth-layer cement sample sampling from top to bottom in the left side of the vertical bulk cement storage tank 6 is completed, and the air exhausted from the cloth bag 541 enters the shell 3 through the opening at the lower end of the supporting cylinder 542. The electromagnetic valves DC5 and DC11 are powered on to work, after 3 seconds, the electromagnetic valves DC5 and DC11 are powered off and do not work, the inner valve cores are closed, then, the sixth electromagnetic valve DC6 at the lowest end of the left side of the vertical bulk cement storage tank 6 and the electromagnetic valve DC12 of the sampling mechanism are powered on to work for 3 seconds, and the inner valve cores are opened, so that air flow blown out by the electric blower M is blown out through the transverse pipe 9, the discharge pipe 91 at the upper end of the electromagnetic valve DC12 and the cloth bag 541 at the lower end of the electromagnetic valve DC 12; in the process, the flowing air flow can generate negative pressure in the vertical pipe 12, so that negative pressure can be formed in the sixth electromagnetic valve DC6 positioned at the lowest end of the left side of the vertical bulk cement storage tank 6, the negative pressure acts on the cement sample positioned at the lowest end of the left side of the vertical bulk cement storage tank 6, thus, the lowest cement sample part in the left side of the vertical bulk cement storage tank 6 can enter the sixth cloth bag 541 at the lower end of the electromagnetic valve DC12 from the sixth sampling pipe 7, the electromagnetic valve DC6 with the opened valve core, the vertical pipe 12 and the electromagnetic valve DC12 with the opened valve core from the left side of the vertical bulk cement storage tank 6 from top to bottom, because the cloth bag only passes through the air and cannot pass through the cement sample, the cement sample is retained in the cloth bag 541, sampling of the cement sample at the lowest end inside the left side of the vertical bulk cement storage tank 6 is completed, and the air exhausted from the cloth bag 541 enters the shell 3 through the opening at the lower end of the supporting cylinder 542. Through the method, cement samples with different heights in the vertical bulk cement storage tank can be sampled at intervals of a certain time within the time set by a sampling person; in practical application, a plurality of sets of the invention can be arranged around the vertical bulk cement storage tank, so that the automatic sampling process of cement samples in different heights and different circumferential positions in the vertical bulk cement storage tank can be completed, and the application is more convenient. In the present invention, the first solenoid valve DC1 and the seventh solenoid valve DC7 are powered for 6 seconds, and the other solenoid valves are powered for 3 seconds, because the air is in the standpipe 12 in the initial state, and the air is not yet formed to a certain negative pressure, and the air is required to be exhausted to a certain negative pressure after about 3 seconds of additional work. In the subsequent electromagnetic valve, because the air in the vertical pipe 12 forms a certain negative pressure, the relative working time is short, and the electric blower blows out a certain amount of air, so that the cement sample in the vertical bulk cement storage tank can be discharged, and the actual requirement is met. In the present invention, the air escaping from the cloth bag 541 enters the water tank 53 through the exhaust pipe 11, and since water is contained in the water tank 53, cement dust contained in the air is effectively adsorbed by the water. The influence of the cement dust directly discharged into the atmosphere on the environment is prevented. When the vertical bulk cement storage tank is used, under the action of a time control switch, the electric blower and the control circuit can be powered on to work in a required time period, air with higher air flow speed can be discharged from the air outlet pipe of the electric blower after the electric blower is powered on to work, and is discharged through the six electromagnetic valves of the sampling mechanism and the cloth bag of the sampling bag device, and negative pressure suction force can be generated in the sampling pipe due to the rapid flow of air flow, so that cement samples with different heights in the vertical bulk cement storage tank can respectively enter the cloth bag of the corresponding sampling bag device through the six electromagnetic valves on the left side of the sampling pipe to finish cement sampling; the air flowing out of the cloth bag can enter the water tank, and cement dust in the air is effectively absorbed by water in the water tank, so that the dust is prevented from causing environmental pollution. After sampling is finished, the six sampling bag devices 54 are respectively taken down from the plurality of upper plates 102, then samples in the cloth bags are poured into sampling bottles and the like to enter a laboratory for testing, and after the samples are poured out, the sampling bag devices 54 are attracted under the upper magnets 103 at the lower ends of the upper plates through the lower magnets 544 again to prepare for next sampling. The invention does not need artificial ascending sampling, is convenient to use and safer, ensures the data after the subsequent laboratory test, represents the property data of all the cement in the tank body as comprehensively as possible, ensures the delivery quality of the cement as possible, and achieves the aim of intelligent operation. Relays K1, K2, K3, K4, K5, K6 are DC12V relays. The electromagnetic valves DC1, DC2, DC3, DC4, DC5, DC6, DC7, DC8, DC9, DC10, DC11 and DC12 are 12V direct current electromagnetic valves with normally closed internal valve cores, and have power of 2W. The electric blower M has the working voltage of 220V and the power of 300W.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A sampling device for cement production comprises a switching power supply, a time control switch and a shell, and is characterized by also comprising a control circuit and a sampling mechanism; a plurality of sampling pipes are arranged at the side end of the vertical bulk cement storage tank at intervals from top to bottom, one side of each sampling pipe is provided with an electromagnetic valve, and exhaust pipes of the electromagnetic valves are connected with a plurality of side pipes which are distributed vertically in a vertical pipe; the shell is arranged on a lower support frame of the vertical bulk cement storage tank; the lower end of the shell is provided with a placing station isolated from the inner space of the shell; the sampling mechanism comprises electric blowers, electromagnetic valves, a water tank and sampling bag devices, the sampling bag devices are the same, the electric blowers are arranged in the shell, and transverse pipes are arranged on air outlet pipes of the electric blowers; the lower end of the transverse pipe is provided with a plurality of discharging pipes at intervals, the lower end of each discharging pipe is provided with an electromagnetic valve, and the lower end of each electromagnetic valve is provided with a lower discharging pipe, an upper plate and an upper permanent magnet; an exhaust pipe is arranged in the middle of the upper end of a movable cover of the shell, the other end of the exhaust pipe is positioned at the upper end of the placing station, and the water tank is positioned at the lower end of the exhaust pipe; each sampling bag device comprises a cloth bag and a supporting cylinder, the lower end of the supporting cylinder is of an open structure, the cloth bag is arranged in the supporting cylinder, and the upper end of the supporting cylinder is provided with a lower plate and a lower permanent magnet; each sampling bag device is sucked under the upper plates; the switching power supply, the time control switch and the control circuit are arranged in the element box; the time control switch, the electric blower, the switching power supply, the plurality of electromagnetic valves on the sampling tube side and the plurality of electromagnetic valves of the sampling mechanism are electrically connected.
2. The sampling apparatus for cement production according to claim 1, wherein the number of the solenoid valves on the sampling tube side and the number of the solenoid valves on the sampling mechanism are the same, and the number of the sampling bag devices is the same.
3. The sampling apparatus for cement manufacture according to claim 1, wherein the sampling tube communicates with the interior space of the vertical bulk cement storage tank.
4. The sampling apparatus for cement production according to claim 1, wherein the polarity of the lower end of the upper magnet is opposite to the polarity of the upper end of the lower magnet.
5. The sampling device for cement production according to claim 1, wherein the switching power supply is an ac to dc switching power supply module.
6. A sampling device for cement production according to claim 1 wherein the time controlled switch is a microcomputer time controlled switch.
7. The sampling device for cement production according to claim 1, wherein the control circuit comprises a single chip microcomputer module with a main control chip STM32F103C8T6 and relays, and the multi-path power output end of the single chip microcomputer module and the two ends of the power input ends of the relays are respectively connected.
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| CN202010014244.0A CN111175083A (en) | 2020-01-07 | 2020-01-07 | Sampling equipment for cement production |
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| CN202010014244.0A CN111175083A (en) | 2020-01-07 | 2020-01-07 | Sampling equipment for cement production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405857A (en) * | 2021-06-29 | 2021-09-17 | 陈伟鑫 | Online sampling device of masterbatch |
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