High-precision industrial metering equipment and working process

文档序号:1947077 发布日期:2021-12-10 浏览:18次 中文

阅读说明:本技术 一种高精度工业计量设备及工作流程 (High-precision industrial metering equipment and working process ) 是由 林渊辉 于 2021-09-10 设计创作,主要内容包括:本发明涉及工业计量领域,特别是指一种高精度工业计量设备及工作流程,该上料设备包括机架、料斗、称重模块、加料机、上料传送带、控制机和计量模块。机架上设有料斗和称重模块,料斗的连接架设于称重模块上方,称重模块和用于控制料斗底面排料阀的控制机电连接。料斗下方设有上料传送带。与称重模块电连接的计量模块用于记录每次使用煤粉的量,计量模块与控制机内的数据库电连接,加料机与控制机内的加料模块电连接,加料模块用于控制加料机向料斗补充煤粉。在料斗内煤粉排出的过程中,称重模块可实时称取料斗内的煤粉量,当称重模块两次称取到的重量的差值达到所设定的排料值时,通过控制机及时关闭排料阀,准确实现料斗内煤粉的定量排料。(The invention relates to the field of industrial metering, in particular to high-precision industrial metering equipment and a working process. The machine frame is provided with a hopper and a weighing module, the connecting frame of the hopper is arranged above the weighing module, and the weighing module is electrically connected with a control machine for controlling a discharge valve on the bottom surface of the hopper. A feeding conveyor belt is arranged below the hopper. The metering module electrically connected with the weighing module is used for recording the amount of the pulverized coal used each time, the metering module is electrically connected with a database in the controller, the feeder is electrically connected with the feeding module in the controller, and the feeding module is used for controlling the feeder to supplement the pulverized coal to the hopper. In the process of discharging the pulverized coal in the hopper, the weighing module can weigh the amount of the pulverized coal in the hopper in real time, and when the difference value of the weights weighed twice by the weighing module reaches a set discharging value, the discharging valve is closed in time by the control machine, so that the quantitative discharging of the pulverized coal in the hopper is accurately realized.)

1. A high accuracy industry measuring equipment which characterized in that, including:

a frame;

the control machine is internally provided with a feeding module and a database;

the hopper is arranged above the rack and can move up and down relative to the rack, the hopper is used for storing coal powder, a discharge valve is arranged on the bottom surface of the hopper, the opening and closing of the discharge valve are controlled by the control machine to realize the quantitative discharge of the coal powder, and a connecting frame is nested on the outer side of the hopper;

the weighing modules are symmetrically arranged at the top of the rack, the connecting frame covers the weighing modules, the weighing modules are used for weighing the weight of the pulverized coal in the hopper, and the weighing modules are electrically connected with the control machine;

the metering module is electrically connected with the weighing module, is used for recording and superposing the amount of the pulverized coal used each time, is electrically connected with the database, and is used for storing the usage amount of the pulverized coal used each time;

the feeding conveyor belt is arranged on the rack, is positioned below the hopper and is used for conveying the pulverized coal discharged from the discharge valve;

the charging machine is electrically connected with the charging module, the charging machine supplies the pulverized coal to the hopper through the charging opening, and the charging module is used for controlling the supply amount of the charging machine for supplying the pulverized coal to the hopper.

2. A high precision industrial metrology device as described in claim 1 wherein: the feeding conveyor belt is rotatably arranged on the mounting frame, the mounting frame is connected to the rack, the feeding conveyor belt is driven by a motor fixed to the mounting frame, baffles are arranged on two sides of the feeding conveyor belt and connected to the mounting frame through connecting rods.

3. A workflow of a high precision industrial metrology device as described in any one of claims 1 to 2, wherein the following steps are performed:

firstly, opening a discharge valve through a control machine, so that the pulverized coal in a hopper passes through the discharge valve and falls onto a feeding conveyor belt;

secondly, starting a motor to drive a feeding conveyor belt to rotate, conveying the coal powder falling from a discharge valve into a drying tower combustion furnace for burning and baking the ceramic raw materials;

thirdly, in the process of discharging the pulverized coal in the hopper from the discharge valve, the weight of the pulverized coal in the hopper can be weighed in real time through the weighing module;

fourthly, when the difference value of the weights weighed twice on the weighing module reaches the weight of quantitative discharge set by the control machine, the weighing module feeds back a signal to the control machine, and the control machine closes the discharge valve in time to realize quantitative discharge of the pulverized coal in the hopper;

fifthly, when the difference value of the weights weighed by the weighing module twice reaches the weight of quantitative discharging set by the control machine, the control machine closes the discharging valve, the weighing module transmits the difference value to the metering module for recording, the difference value is the usage amount of the coal powder, and then when the control machine closes the discharging valve, the weighing module transmits the difference value of the coal powder weight to the metering module for recording so as to record the coal powder usage amount each time;

sixthly, the metering module transmits the recorded coal powder usage amount to a database for storage, and the stored data is accompanied by usage time;

seventhly, when the usage amount of the pulverized coal at a certain time, a certain day or a certain period of time needs to be inquired, the required data can be obtained by quickly screening, inquiring and overlapping the database;

eighthly, coal powder inventory data obtained by subtracting the total amount of the used coal powder from the total amount of the coal powder put in storage is also arranged in the database, and when the inventory is lower than a set value in the database, a control machine can remind workers to enter goods in time;

and ninthly, deducting the used coal powder amount of the drying tower combustion furnace according to the total coal powder amount required in the drying tower combustion furnace to obtain the coal powder amount required by the drying tower combustion furnace, supplementing the coal powder amount by using a feeder, and stopping the feeder when the coal powder amount in the hopper reaches the coal powder amount required by the drying tower combustion furnace, so that all the coal powder in the hopper can be used when the drying tower combustion furnace is used every time.

Technical Field

The invention relates to the field of industrial metering, in particular to high-precision industrial metering equipment and a working process.

Background

During the production of ceramic tiles, it is often necessary to dry the milled slurry to form a powder particle. The existing equipment for drying the slurry in the production of ceramics is a spray drying tower, the slurry is sprayed upwards from the bottom of the spray drying tower through a nozzle, then hot air is introduced into the spray drying tower, the hot air with high temperature is contacted with the slurry, thereby drying the slurry into powder particles, and the hot air source in the drying tower is prepared by burning pulverized coal, but the method has serious defects: the heat supply is unstable, the pulverized coal burns incompletely, cause carbon granule and dust that contain in the hot-air to get into the quality that influences the product in the drying tower, and the pulverized coal volume in the burning furnace that must guarantee to add the drying tower at every turn in order to control the combustion degree of temperature and pulverized coal is unanimous, but traditional pulverized coal charging equipment is all accurate inadequately to the pay-off volume of pulverized coal, the temperature that leads to the hot-air that introduces in the drying tower takes place great change, influence product quality, and all need the manual work to weigh to the use amount of pulverized coal (day) every time, and just can obtain data after carrying out multinomial calculation, workman's amount of labour has increased.

Disclosure of Invention

In view of the above-mentioned shortcomings of the background art, the present invention provides a high-precision industrial metering device.

The invention adopts the following technical scheme that:

a frame;

the control machine is internally provided with a feeding module and a database;

the hopper is arranged above the rack and can move up and down relative to the rack, the hopper is used for storing coal powder, a discharge valve is arranged on the bottom surface of the hopper, the opening and closing of the discharge valve are controlled by the control machine to realize the quantitative discharge of the coal powder, and a connecting frame is nested on the outer side of the hopper;

the weighing modules are symmetrically arranged at the top of the rack, the connecting frame covers the weighing modules, the weighing modules are used for weighing the weight of the pulverized coal in the hopper, and the weighing modules are electrically connected with the control machine;

the metering module is electrically connected with the weighing module, is used for recording and superposing the amount of the pulverized coal used each time, is electrically connected with the database, and is used for storing the usage amount of the pulverized coal used each time;

the feeding conveyor belt is arranged on the rack, is positioned below the hopper and is used for conveying the pulverized coal discharged from the discharge valve;

the charging machine is electrically connected with the charging module, the charging machine supplies the pulverized coal to the hopper through the charging opening, and the charging module is used for controlling the supply amount of the charging machine for supplying the pulverized coal to the hopper.

As a further improvement, the feeding conveyor belt is rotatably arranged on a mounting frame, the mounting frame is connected to the rack, the feeding conveyor belt is driven by a motor fixed to the mounting frame, baffles are arranged on two sides of the feeding conveyor belt and connected to the mounting frame through connecting rods.

The work flow of the high-precision industrial metering equipment is characterized by comprising the following steps of:

firstly, opening a discharge valve through a control machine, so that the pulverized coal in a hopper passes through the discharge valve and falls onto a feeding conveyor belt; secondly, starting a motor to drive a feeding conveyor belt to rotate, conveying the coal powder falling from a discharge valve into a drying tower combustion furnace for burning and baking the ceramic raw materials; thirdly, in the process of discharging the pulverized coal in the hopper from the discharge valve, the weight of the pulverized coal in the hopper can be weighed in real time through the weighing module; fourthly, when the difference value of the weights weighed twice on the weighing module reaches the weight of quantitative discharge set by the control machine, the weighing module feeds back a signal to the control machine, and the control machine closes the discharge valve in time to realize quantitative discharge of the pulverized coal in the hopper; fifthly, when the difference value of the weights weighed by the weighing module twice reaches the weight of quantitative discharging set by the control machine, the control machine closes the discharging valve, the weighing module transmits the difference value to the metering module for recording, the difference value is the usage amount of the coal powder, and then when the control machine closes the discharging valve, the weighing module transmits the difference value of the coal powder weight to the metering module for recording so as to record the coal powder usage amount each time; sixthly, the metering module transmits the recorded coal powder usage amount to a database for storage, and the stored data is accompanied by usage time; seventhly, when the usage amount of the pulverized coal at a certain time, a certain day or a certain period of time needs to be inquired, the required data can be obtained by quickly screening, inquiring and overlapping the database; eighthly, coal powder inventory data obtained by subtracting the total amount of the used coal powder from the total amount of the coal powder put in storage is also arranged in the database, and when the inventory is lower than a set value in the database, a control machine can remind workers to enter goods in time; and ninthly, deducting the used coal powder amount of the drying tower combustion furnace according to the total coal powder amount required in the drying tower combustion furnace to obtain the coal powder amount required by the drying tower combustion furnace, supplementing the coal powder amount by using a feeder, and stopping the feeder when the coal powder amount in the hopper reaches the coal powder amount required by the drying tower combustion furnace, so that all the coal powder in the hopper can be used when the drying tower combustion furnace is used every time.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: the feeding equipment comprises a rack, a hopper, a weighing module, a feeder, a feeding conveyor belt, a controller and a metering module. The machine frame is provided with a hopper and a weighing module, the connecting frame of the hopper is arranged above the weighing module, and the weighing module is electrically connected with a control machine for controlling a discharge valve on the bottom surface of the hopper. A feeding conveyor belt is arranged below the hopper. The metering module electrically connected with the weighing module is used for recording the amount of the pulverized coal used each time, the metering module is electrically connected with a database in the controller, the feeder is electrically connected with the feeding module in the controller, and the feeding module is used for controlling the feeder to supplement the pulverized coal to the hopper. In the process of discharging the pulverized coal in the hopper, the weighing module can weigh the amount of the pulverized coal in the hopper in real time, when the difference value of the weights weighed by the weighing module twice reaches the set discharge value, the discharge valve is closed in time through the control machine, and the quantitative discharge of the pulverized coal in the hopper is accurately realized, so that the accuracy of the pulverized coal feeding amount in the combustion furnace of the drying tower is realized, and the drying rate of ceramic raw materials is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of a connection structure of the frame and the weighing module.

Fig. 3 is a schematic perspective view of the hopper.

Fig. 4 is a schematic structural diagram of the feeding conveyor belt.

FIG. 5 is a circuit diagram of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in the attached figure 1, the high-precision industrial metering equipment comprises a rack 1, a hopper 2, a weighing module 3, a feeder 4, a feeding conveyor belt 5, a controller 6 and a metering module 7.

As shown in attached figures 1, 2 and 3, the hopper 2 is arranged above the frame 1, and the hopper 2 can move up and down relatively to the frame 1, the hopper 2 is used for storing coal powder, and the bottom surface of the hopper 2 is provided with a discharge valve 21, through the control machine 6 controls the opening and closing of the discharge valve 21 to realize the quantitative discharge of the coal powder, concretely, the weighing module 3 is provided with a plurality of weighing modules 3 symmetrically arranged at the top of the frame 1, the outside nested connection frame 22 of the hopper 2 covers above the weighing module 3, the weighing module 3 is used for weighing the weight of the coal powder in the hopper 2, and the weighing module 3 is electrically connected with the control machine 6, the weighing module 3 is preferably a digital weighing sensor, the digital weighing sensor is a force-electricity conversion device capable of converting gravity into electric signals, and mainly is an integrated electronic amplifier, the novel sensor of the analog-digital conversion technology and the microprocessor has the advantages of simple and convenient debugging and strong field adaptability, when in operation, the discharge valve 21 is opened, the weight of the coal dust in the hopper 2 is weighed by the weighing module 3 in real time in the process that the coal dust in the hopper 2 is discharged from the discharge valve 21, when the difference value of the weights weighed twice on the weighing module 3 reaches the weight of the quantitative discharge set by the control machine 6, the weighing module 3 feeds back a signal to the control machine 6, the discharge valve 21 is closed in time by the control machine 6, the quantitative discharge of the coal dust in the hopper 2 is realized, and because the hopper 2 has no feeding operation during the discharge, the difference value of the weights weighed twice by the weighing module 3 is the weight of the coal dust discharged from the hopper 2 once, thereby improving the accuracy and the scientificity of the weighing on the weighing module 3 and realizing the high-precision quantitative discharge, so as to realize high-precision quantitative feeding of the drying tower combustion furnace subsequently.

As shown in fig. 5, the metering module 7 is electrically connected to the weighing module 3, the metering module 7 is used for recording and overlapping the amount of coal dust used each time, the metering module 7 is electrically connected to a database 8 in the control machine 6, the database 8 is used for storing the amount of coal dust used each time, when the difference between the weights weighed twice on the weighing module 3 reaches the weight of the quantitative discharging set by the control machine 6, the weighing module 3 feeds back a signal to the control machine 6, the weighing module 3 sends the difference to the metering module 7 for recording when the control machine 6 closes the discharging valve 21, the difference is the amount of coal dust used this time, then when the control machine 6 closes the discharging valve 21, the weighing module 3 sends the difference of coal dust weight to the metering module 7 for recording so as to record the amount of coal dust used each time, and the metering module 7 transmits the recorded amount of coal dust to the database 8 for storage, and the stored data is also accompanied by using time, when the coal dust usage amount of a certain time, a certain day or a certain period of time needs to be inquired, the database 8 can be used for quickly screening, inquiring and overlapping so as to quickly and accurately obtain the required data and know the coal dust usage amount without the need of multiple calculations of workers, the labor amount of workers is reduced, the database 8 is also provided with coal dust inventory data obtained by accurately subtracting the used coal dust total amount from the total amount of the coal dust put in storage, and when the inventory is lower than a set value in the database 8, the controller 6 can remind the workers to ensure that the workers can timely enter the goods and the ceramic processing progress is prevented from being influenced by the shortage of the coal dust.

As shown in fig. 1 and 4, the feeding conveyor belt 5 is disposed on the frame 1, the feeding conveyor belt 5 is disposed below the hopper 2, the feeding conveyor belt 5 is used for conveying pulverized coal discharged from the discharge valve 21, specifically, the feeding conveyor belt 5 is rotatably disposed on a mounting frame 51, the mounting frame 51 is connected to the frame 1, the feeding conveyor belt 5 is driven by a motor 55 fixed to the mounting frame 51, baffles 53 are disposed on both sides of the feeding conveyor belt 5, the baffles 53 are connected to the mounting frame 51 by a connecting rod 54, in operation, the motor 55 is started to drive the feeding conveyor belt 5 to rotate, and the pulverized coal dropped from the discharge valve 21 is conveyed into a drying tower combustion furnace for burning and baking ceramic raw materials, wherein the baffles 53 are disposed to prevent the pulverized coal from sliding down to the ground from both sides of the feeding conveyor belt 5 during the conveying process, the waste and the lack of the pulverized coal are caused, so that the amount of the pulverized coal entering the combustion furnace of the drying tower is ensured, and high-precision feeding is realized.

As shown in fig. 1 and 5, the feeder 4 is electrically connected to a feeding module 61 in the controller 6, the feeder 4 supplies pulverized coal to the hopper 2 through a feeding port 41, and the feeding module 61 is used for controlling the amount of pulverized coal supplied from the feeder 4 to the hopper 2, when in operation, the amount of pulverized coal used by the drying tower combustion furnace can be deducted according to the total amount of pulverized coal required in the drying tower combustion furnace to obtain the amount of pulverized coal still required by the drying tower combustion furnace, when the feeder 4 supplies pulverized coal to the hopper 2 through the feeding port 41, the weight of the pulverized coal in the hopper 2 is weighed in real time by the weighing module 3, when the amount of pulverized coal in the hopper 2 reaches the amount of pulverized coal still required by the drying tower combustion furnace, the weighing module 3 feeds back a signal to the controller 6, and the controller 6 stops supplying pulverized coal to the hopper 2 through the feeding module 61 by the feeder 4, so that when the drying tower combustion furnace is used each time, all the coal powder in the hopper 2 can be used up, so that the coal powder is prevented from being retained in the hopper 2 for a long time, the coal powder is prevented from being wet and softened, the using effect of the coal powder is prevented from being influenced, and the using cost of the coal powder is saved.

During operation, the control machine 6 opens the discharge valve 21 to enable coal powder in the hopper 2 to pass through the discharge valve 21 and fall onto the feeding conveyor belt 5, and simultaneously the motor 55 is started to drive the feeding conveyor belt 5 to rotate, so that the coal powder falling from the discharge valve 21 is conveyed into the drying tower combustion furnace for burning and baking ceramic raw materials, wherein the baffle plate 53 is arranged to prevent the coal powder from sliding down to the ground from two sides of the feeding conveyor belt 5 in the conveying process to cause waste and lack of the coal powder, thereby ensuring the amount of the coal powder entering the drying tower combustion furnace and realizing high-precision feeding, the weighing module 3 can weigh the weight of the coal powder in the hopper 2 in real time in the discharging process of the coal powder from the discharge valve 21 in the hopper 2, when the difference value of the weights weighed twice on the weighing module 3 reaches the weight of quantitative discharging set by the control machine 6, the weighing module 3 feeds back a signal to the control machine 6, close the blow-off valve 21 in time through controller 6, realize the quantitative row of buggy in hopper 2 and arrange the material, and because hopper 2 does not have the feeding operation when arranging the material, make the difference of the weight of weighing module 3 two times of weighing, be the weight of the single discharge buggy in hopper 2, thereby improve accuracy and the scientificity of weighing on the weighing module 3, realize the ration of high accuracy and arrange the material, so that follow-up high accuracy ration pay-off that realizes the drying tower combustion furnace, thereby realize the accuracy of buggy pay-off in the drying tower combustion furnace, improve ceramic raw materials's drying rate. And the difference value of the weight obtained by the weighing module 3 twice reaches the weight of the quantitative discharging set by the control machine 6, so that the control machine 6 closes the discharging valve 21, the weighing module 3 transmits the difference value to the metering module 7 for recording, the difference value is the usage amount of the coal dust at this time, then when the control machine 6 closes the discharging valve 21, the weighing module 3 transmits the difference value of the coal dust weight to the metering module 7 for recording so as to record the coal dust amount used each time, the metering module 7 transmits the recorded coal dust usage amount to the database 8 for storage, the stored data is additionally provided with usage time, when the coal dust usage amount at a certain time, a certain day or a certain period of time needs to be inquired, the database 8 can be used for fast screening, inquiring and overlapping so as to obtain the required data fast and accurately and know the usage amount of the coal dust, the labor amount of workers is reduced without multiple calculations of the workers, the database 8 is also provided with coal powder inventory data obtained by subtracting the total amount of the used coal powder from the total amount of the coal powder put in storage, and when the inventory is lower than a set value in the database 8, the controller 6 can remind the workers to enable the workers to timely enter the goods, so that the ceramic processing progress is prevented from being influenced by the lack of the goods of the coal powder.

In addition, the metering device is applied to ceramic production, and can also be applied to coal burning equipment in various industries such as bleaching and dyeing industry, food industry and the like, so that the accurate and quantitative discharge and use of the pulverized coal are realized, and the processing effect and progress are ensured.

The work flow of the high-precision industrial metering equipment is characterized by comprising the following steps of:

firstly, opening a discharge valve 21 through a control machine 6, so that the pulverized coal in a hopper 2 passes through the discharge valve 21 and falls onto a feeding conveyor belt 5;

secondly, starting a motor 55 to drive a feeding conveyor belt 5 to rotate, conveying the pulverized coal falling from a discharge valve 21 into a drying tower combustion furnace for burning and baking ceramic raw materials, wherein the arrangement of a baffle plate 53 can avoid the pulverized coal from sliding down to the ground from two sides of the feeding conveyor belt 5 in the conveying process to cause waste and lack of the pulverized coal, thereby ensuring the amount of the pulverized coal entering the drying tower combustion furnace and realizing high-precision feeding;

thirdly, in the process of discharging the coal dust in the hopper 2 from the discharge valve 21, the weight of the coal dust in the hopper 2 can be weighed in real time through the weighing module 3;

fourthly, when the difference value of the weights weighed twice on the weighing module 3 reaches the weight of the quantitative discharge set by the control machine 6, the weighing module 3 feeds back a signal to the control machine 6, the discharge valve 21 is closed in time through the control machine 6, the quantitative discharge of the pulverized coal in the hopper 2 is realized, and the difference value of the weights weighed twice by the weighing module 3 is the weight of the pulverized coal discharged from the hopper 2 once because the hopper 2 has no feeding operation during the discharge, so that the weighing accuracy and the weighing scientificity on the weighing module 3 are improved, the high-precision quantitative discharge is realized, the high-precision quantitative feed of a drying tower combustion furnace is realized subsequently, the accuracy of the pulverized coal feed quantity in the drying tower combustion furnace is realized, and the drying rate of the ceramic raw material is improved;

fifthly, when the difference value of the weights weighed by the weighing module 3 twice reaches the weight of quantitative discharging set by the control machine 6, the control machine 6 closes the discharging valve 21, the weighing module 3 transmits the difference value to the metering module 7 for recording, the difference value is the usage amount of the pulverized coal at this time, and then when the control machine 6 closes the discharging valve 21, the weighing module 3 transmits the difference value of the pulverized coal weights to the metering module 7 for recording so as to record the pulverized coal amount used each time;

sixthly, the metering module 7 transmits the recorded coal powder usage amount to the database 8 for storage, and the stored data is accompanied by the usage time;

seventhly, when the usage amount of the pulverized coal at a certain time, a certain day or a certain period of time needs to be inquired, the database 8 can be used for quickly screening, inquiring and overlapping so as to quickly and accurately obtain the required data, know the usage amount of the pulverized coal, and reduce the labor amount of workers without the need of multiple calculations of the workers;

eighthly, coal powder inventory data obtained by subtracting the total amount of the used coal powder from the total amount of the coal powder put in storage is also arranged in the database 8, and when the inventory is lower than a set value in the database 8, a controller 6 can remind workers, so that the workers can timely enter goods, and the ceramic processing progress is prevented from being influenced by the shortage of the coal powder;

ninth, the amount of the coal powder used by the drying tower combustion furnace can be deducted according to the total coal powder amount needed by the drying tower combustion furnace, the coal powder amount needed by the drying tower combustion furnace is supplemented by a charging machine 4, when the charging machine 4 supplies the pulverized coal into the hopper 2 through the charging opening 41, the weighing module 3 is used for weighing the weight of the pulverized coal in the hopper 2 in real time, when the amount of the coal powder in the hopper 2 reaches the amount of the coal powder needed by the combustion furnace of the drying tower, the weighing module 3 feeds back a signal to the control machine 6, the control machine 6 stops the feeding machine 4 from supplementing the coal powder to the hopper 2 through the feeding module 61, therefore, when the drying tower combustion furnace is used at every time, all the pulverized coal in the hopper 2 can be used, the pulverized coal is prevented from being detained in the hopper 2 for a long time, the pulverized coal is prevented from being wet and softened, the using effect of the pulverized coal is prevented from being influenced, and the using cost of the pulverized coal is saved.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

12页详细技术资料下载
上一篇:一种医用注射器针头装配设备
下一篇:一种家具生产用辅助堆放木板板材装置

网友询问留言

已有0条留言

还没有人留言评论。精彩留言会获得点赞!

精彩留言,会给你点赞!