CN210071063U - Powder explosion-proof ultrasonic material level detection system - Google Patents
Powder explosion-proof ultrasonic material level detection system Download PDFInfo
- Publication number
- CN210071063U CN210071063U CN201920816101.4U CN201920816101U CN210071063U CN 210071063 U CN210071063 U CN 210071063U CN 201920816101 U CN201920816101 U CN 201920816101U CN 210071063 U CN210071063 U CN 210071063U
- Authority
- CN
- China
- Prior art keywords
- powder
- ultrasonic
- collecting cylinder
- powder collecting
- plc control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Crushing And Pulverization Processes (AREA)
Abstract
The utility model relates to a powder explosion-proof ultrasonic material level detection system, which comprises a big cyclone recovery device, wherein the big cyclone recovery device comprises a powder collecting cylinder, the top of the powder collecting cylinder is provided with an inlet, and the bottom of the powder collecting cylinder is communicated with a powder conveying pipe; a plurality of ultrasonic detection components are arranged on the powder collecting cylinder; a plurality of crushing assemblies are arranged at the bottom end of the powder collecting cylinder; the alarm component is arranged outside the powder collecting cylinder; PLC control system and ultrasonic detection subassembly, crushing unit and warning subassembly link to each other, and PLC control system and with the warning subassembly between still be equipped with the time delay controller, the utility model discloses utilize the principle that the propagation velocity is inconsistent in different media of ultrasonic wave, the dust content in the accurate detection collection powder section of thick bamboo, send corresponding information for PLC control system by ultrasonic detection subassembly, and PLC control crushing unit, humidity transducer and warning subassembly make corresponding operation, guarantee that the bottom of collection powder section of thick bamboo can not accumulate too much dust, whole detecting system's precision is high, has promoted whirlwind recovery unit's long-term stability.
Description
Technical Field
The utility model belongs to the technical field of dust material level automatic detection, especially, relate to an explosion-proof ultrasonic wave material level detecting system of powder.
Background
According to the requirements of 'safety technical specification of dust removal system for dust explosion hazardous places' (AQ 4273-2016), a powder conveying pipeline in a barrel needs to be separated from a barrel body structure, and the bottom of the first-stage recovery cyclone recovery system for powder spraying adopts a semi-closed structure of a double-layer pinch valve, so that system isolation in any time period is ensured, and hidden dangers of fire and explosion are reduced.
Under the condition, if the powder suction amount of the previous way is too large, part of powder accumulation (storage) space is bound to be arranged at the bottom of the primary recovery cyclone equipment, and the powder accumulation is possibly too much under certain specific conditions, so that the potential safety hazard of large explosion exists, even the operation of the cyclone is influenced, the high-frequency shaking of the barrel body is caused, and the equipment is in failure. The reasons for these possible powder deposits are mainly the following:
(1) failure of the powder conveying system at the lower part of the cyclone;
(2) the powder quality is poor, and the phenomena of conglobation and lumpiness exist to block the hopper;
(3) the weather is too humid, resulting in powder sticking to the bottom and clogging;
(4) the powder conveying system at the bottom is blocked by the absorbed micro foreign matters;
(5) therefore, a material level measuring device is required to be arranged at the bottom of the big cyclone to ensure that the powder accumulated at the bottom is controlled within a reasonable range.
Dust collecting equipment on the existing market mostly does not detect the bottom of the big cyclone, and the main reasons are as follows: 1, the safety consciousness is weak, and a large cyclone system is not treated as a component of powder dust removal; 2. the existing detection means has larger error in the detection treatment of the plastic powder, and a large number of false alarms and other conditions occur, so that a dust material level detector which can meet the requirements is urgently needed to be designed, the detection requirement of bottom dust of the large cyclone recovery equipment is met, and the long-term use stability of the large cyclone recovery equipment is ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art not enough and provide one kind can automated inspection album dust of powder bobbin base portion and whether accumulate too much to carry out corresponding processing and warning through PLC control system, ensured the explosion-proof ultrasonic wave material level detecting system of powder that big whirlwind recovery plant stability is good.
In order to achieve the above purpose, the utility model adopts the technical scheme that: an explosion-proof ultrasonic powder material level detection system comprises a large cyclone recovery device, wherein the large cyclone recovery device comprises a powder collecting cylinder, the top of the powder collecting cylinder is provided with an inlet, and the bottom of the powder collecting cylinder is communicated with a powder conveying pipe; the ultrasonic wave crushing machine also comprises an ultrasonic detection component, a crushing component, an alarm component, a PLC control system and a time delay controller; the powder collecting cylinder is provided with a plurality of ultrasonic detection assemblies for detecting the height of dust at the bottom of the powder collecting cylinder and sending corresponding information to the PLC control system; the bottom end of the powder collecting cylinder is provided with a plurality of crushing assemblies for crushing the blocky powder at the bottom in the powder collecting cylinder; the alarm assembly is arranged outside the powder collecting cylinder; the PLC control system is connected with the large cyclone recovery device, the ultrasonic detection assembly, the crushing assembly and the alarm assembly, and a delay controller is further arranged between the PLC control system and the alarm assembly.
Further, at least two ultrasonic detection assemblies are arranged at the top of the powder collecting cylinder; the ultrasonic detection assembly consists of an ultrasonic sensor and a wave guide rod which are connected; ultrasonic sensor sets up the upper end at a collection powder section of thick bamboo, and the guided wave pole inserts in a collection powder section of thick bamboo, and rotatable the linking to each other between guided wave pole and the ultrasonic sensor.
Further, the wave guide rod is of a telescopic structure.
Furthermore, a plurality of cleaning components are arranged on two sides of the inner wall of the powder collecting cylinder; the cleaning component comprises an electromagnetic valve obliquely arranged on the inner wall of the powder collecting cylinder, and the electromagnetic valve is connected with the PLC control system; the front end of the electromagnetic valve is provided with a spray head; the other end of the electromagnetic valve is communicated with an external air outlet device.
Further, at least two ultrasonic detection assemblies are included; the ultrasonic detection component is an ultrasonic sensor module, and an ultrasonic transmitting module and an ultrasonic receiving module are arranged in the ultrasonic sensor module; a plurality of symmetrical emission holes are respectively formed in two ends of the powder collecting cylinder; the powder collecting device is characterized in that a clamping piece is arranged on the outer portion of the transmitting hole, an ultrasonic detection assembly is clamped on the clamping piece, and the front end of the ultrasonic detection assembly penetrates through the bottom of the transmitting hole and points to the powder collecting barrel.
Further, the crushing assembly comprises a small motor and a rotating rod; the small-sized motor is arranged at the bottom outside the powder collecting barrel, the rotating rods are connected with the rotating shaft of the small-sized motor, and the rotating rods are arranged at the bottom inside the powder collecting barrel.
Further, the alarm assembly comprises an alarm and a flashing light; and the alarm and the flashing lamp are connected with the PLC control system.
Further, a humidity sensor is also included; a humidity sensor is embedded in the inner wall of the powder collecting cylinder; the humidity sensor is connected with the PLC control system and used for sensing the humidity in the powder collecting cylinder and displaying real-time data on a display screen on the PLC control system through the PLC control system.
Furthermore, a transparent observation window is also arranged on the powder collecting cylinder.
Furthermore, the powder conveying pipe is in threaded connection with the powder collecting cylinder, a control valve is arranged on the powder conveying pipe, and the control valve is connected with the PLC control system.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
①, detecting the dust accumulation at the bottom of the powder collecting barrel in real time by using an ultrasonic detection component, ensuring that the dust accumulation is set within a controllable range, and alarming by an alarm component if the dust accumulation is not within the controllable range;
② when the dust at the bottom of the powder collecting cylinder is not in the controllable range, the PLC control system automatically controls the crushing assembly to open, the crushing assembly crushes the block powder in the powder collecting cylinder, and the excessive accumulation of dust at the bottom of the powder collecting cylinder is avoided;
③, sensing the humidity in the powder collecting cylinder in real time through a humidity sensor, displaying the humidity data in real time through a display screen, and facilitating the observation of a user;
④ when the powder conveying pipe is blocked, the powder conveying pipe can be directly detached from the bottom of the powder collecting barrel for cleaning, which is convenient and fast.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
fig. 1 is a schematic perspective view of a first embodiment of the present invention;
fig. 2 is a schematic diagram of the internal structure of the first embodiment of the present invention, without the PLC control system and the delay controller;
FIG. 3 is an enlarged fragmentary view of FIG. 2;
fig. 4 is a schematic diagram of the internal structure of the second embodiment of the present invention after omitting the PLC control system and the delay controller;
FIG. 5 is an enlarged fragmentary view of FIG. 4;
wherein: the device comprises a cyclone recovery device 1, an ultrasonic detection component 2, a clamping piece 3, a PLC control system 5, a time delay controller 6, a powder collecting cylinder 10, an inlet 11, a powder conveying pipe 12, a transparent observation window 13, an ultrasonic sensor 20, a wave guide rod 21, a small motor 30, a rotating rod 31, an alarm 40, a flashing lamp 41, a display screen 70, a humidity sensor 71, an electromagnetic valve 100 and a spray nozzle 101.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-3, an explosion-proof ultrasonic powder level detecting system according to a first embodiment of the present invention includes a cyclone recovering device 1, which includes a powder collecting cylinder 10, an inlet 11 is opened at the top of the powder collecting cylinder 10, and a powder conveying pipe 12 is connected to the bottom of the powder collecting cylinder; the ultrasonic wave crushing machine also comprises an ultrasonic detection component 2, a crushing component, an alarm component, a PLC control system 5 and a delay controller 6; the powder collecting cylinder 10 is provided with a plurality of ultrasonic detection assemblies 2 for detecting the height of dust at the bottom of the powder collecting cylinder 10 and sending corresponding information to the PLC control system 5; the bottom end of the powder collecting cylinder 10 is provided with a plurality of crushing assemblies for crushing blocky powder at the bottom in the powder collecting cylinder 10; the alarm assembly 4 is arranged outside the powder collecting cylinder 10; the PLC control system 5 is connected with the large cyclone recovery device 1, the ultrasonic detection assembly 2, the crushing assembly and the alarm assembly, and a delay controller 6 is further arranged between the PLC control system 5 and the alarm assembly.
Specifically, in the present embodiment, two ultrasonic detection assemblies 2 are disposed at the top of the powder collecting cylinder 10, and the two ultrasonic detection assemblies 2 are respectively located at two sides of the inlet 11; the ultrasonic detection assembly 2 is composed of an ultrasonic sensor 20 and a waveguide rod 21 which are connected; ultrasonic sensor 20 sets up in the upper end of an album powder section of thick bamboo 10, and guided wave pole 21 inserts in album powder section of thick bamboo 10, and rotatable linking to each other between guided wave pole 21 and the ultrasonic sensor 20, also can adjust the angle of guided wave pole 21 like this for satisfy different environment's user demand, in this embodiment, be vertical continuous between guided wave pole 21 and the ultrasonic sensor 20.
Wherein, guided wave pole 21 is the telescopic structure, can adjust guided wave pole 21's length like this to satisfy the user demand of different length.
The crushing assembly comprises a small motor 30 and a rotating rod 31; the small-sized motor 30 is arranged at the bottom outside the powder collecting barrel 10, the rotating rods 31 are connected with the rotating shaft of the small-sized motor 30, the rotating rods 31 are arranged at the bottom inside the powder collecting barrel 10, the outer surfaces of the rotating rods 31 are fish scales, the crushing efficiency of the blocky dust can be effectively improved, and the number of the crushing assemblies is four in the embodiment.
The alarm assembly comprises an alarm 40 and a flashing light 41; the alarm 40 and the flashing lamp 41 are connected with the PLC control system 5.
At specific during operation, ultrasonic testing subassembly 2 highly detects the dust in a powder section of thick bamboo 10 that gathers, ultrasonic sensor 20 sends the ultrasonic wave, and carry out vertical direction transmission through guided wave pole 21, thereby can be better highly detect the dust in a powder section of thick bamboo 10 that gathers, 2 ultrasonic testing subassemblies have been set up in this embodiment, and two ultrasonic testing subassemblies are located both sides, in the time of can avoiding only an ultrasonic testing subassembly like this, the dust of accumulation is high on one side, on one side low and reduce the detection precision, ultrasonic testing subassembly detection precision has been improved.
A dust height value is set in a PLC control system in advance, after the PLC control system receives a signal sent by an ultrasonic detection assembly after detection, the detected dust height is higher than the value, the PLC control system controls a crushing assembly to work first, at the moment, the dust accumulation is too high due to the fact that blocky powder exists at the bottom of a powder collection barrel, at the moment, a small motor starts to work, a rotating shaft of the small motor drives a plurality of rotating rods to rotate, so that the blocky powder at the bottom is crushed, and normal transmission between the powder collection barrel and a powder conveying pipe is guaranteed; meanwhile, the PLC control system sends an alarm signal to the alarm assembly through the delay controller, and when the PLC control system receives a signal sent by the ultrasonic detection assembly in the delay time, the height of dust is found to be returned within a set range, the PLC control system sends the signal to the delay controller again, the delay controller does not send the alarm signal to the alarm assembly any more, direct alarm is guaranteed to be avoided as soon as a problem occurs, and the automatic adjustment capability is achieved.
After the alarm 40 and the flashing lamp 41 receive the signals sent by the delay controller, the alarm 40 gives out sound alarm, and the flashing lamp 41 flashes at the same time, so that the personnel can find the signals in time.
Wherein, a plurality of cleaning components are further arranged on both sides of the inner wall of the powder collecting cylinder 10, in this embodiment, two cleaning components are not respectively arranged on both sides and are respectively positioned on the upper part and the lower part of the wave guide rod 21; the cleaning component comprises an electromagnetic valve 100 obliquely arranged on the inner wall of the powder collecting cylinder 10; the front end of the electromagnetic valve 100 is provided with a spray head 101; the other end of the electromagnetic valve 100 is communicated with an external air outlet device (not shown in the figure); like this when because long-time back of using, there is remaining dust on the guided wave pole for ultrasonic testing subassembly measuring data is inaccurate, perhaps produces the mistake and touches, opens the solenoid valve through PLC control system this moment, makes the gas in the gas outlet means spout from the shower nozzle, cleans the surface of guided wave pole.
As a further preferred embodiment, a humidity sensor 71; a humidity sensor 71 is embedded in the inner wall of the powder collecting cylinder 10; the humidity sensor 71 is connected with the PLC control system 5, the humidity sensor 71 is used for sensing the humidity in the powder collecting cylinder 10, and real-time data are displayed on the display screen 70 on the PLC control system 5 through the PLC control system 5.
Specifically, in order to prevent the dust from caking and condensing in a humid environment, the humidity state in the powder collecting cylinder needs to be known in time, so that a humidity sensor 71 is arranged on the inner wall of the powder collecting cylinder, is always in an open state, monitors the humidity in the powder collecting cylinder in real time, and reflects a humidity value to a display screen, so that a user can observe the humidity in the powder collecting cylinder at any time; also set up the highest value of a humidity in PLC control system simultaneously, when the scope of the humidity that humidity transducer 71 sent exceeded the highest value of humidity, PLC control system automatic control big whirlwind recovery unit stop work, avoided inside dust to wet the caking and block up in collection powder barrel bottom and lead to the unable work of big rotatory recovery unit.
As a further preferred embodiment, the powder collecting cylinder 10 is further provided with a transparent observation window 13, which is specifically located at the lower half portion of the powder collecting cylinder 10, so that whether the bottom of the powder collecting cylinder 10 is excessively accumulated with dust can be observed in real time, and thus precautionary measures can be taken in advance.
As a further preferred embodiment, the powder conveying pipe 12 is in threaded connection with the powder collecting cylinder 10, and the powder conveying pipe 12 is provided with a control valve 120, so that when the powder conveying pipe 12 is blocked, the control valve 120 is closed by using a PLC control system, and then the powder conveying tank and the powder collecting cylinder are removed to clean the powder conveying tank and the powder collecting cylinder.
In addition, referring to fig. 4-5, the present invention further discloses a second specific embodiment, which includes at least two ultrasonic detection assemblies 2, and in this embodiment, includes two ultrasonic detection assemblies 2; two ends of the upper part of the powder collecting cylinder 10 are respectively provided with symmetrical emission holes; a clamping piece 3 is arranged outside the emission hole, an ultrasonic detection component 2 is clamped on the clamping piece 3, and the front end of the ultrasonic detection component 2 passes through the emission hole and points to the bottom of the powder collection cylinder 10; the ultrasonic detection component 2 is an ultrasonic sensor module, and an ultrasonic transmitting module and an ultrasonic receiving module are arranged in the ultrasonic sensor module.
Ultrasonic wave to collection powder bobbin base portion can be directly launched by the ultrasonic emission module among the ultrasonic detection subassembly here, recycles ultrasonic receiving module and sends and carry out corresponding control for PLC control system after receiving relevant information, and the ultrasonic detection subassembly of here is comparatively close to collection powder bobbin base portion, and the distance between ultrasonic detection subassembly and the collection powder bobbin base portion is short, so does not need the guided wave pole, and the precision that its detected is also higher.
The utility model discloses an explosion-proof ultrasonic wave material level detection system of powder, it is used in big whirlwind recovery unit, utilize the inconsistent principle of propagation velocity of ultrasonic wave in different media, the accurate dust content that detects in the powder collection section of thick bamboo, specifically be through ultrasonic detection subassembly detection dust content, and give PLC control system with corresponding information transmission, and PLC control system automatic control crushing unit, corresponding operation is made to humidity transducer and alarm component, guarantee that the bottom of a powder collection section of thick bamboo can not accumulate too much dust, whole detecting system's precision is high, big whirlwind recovery unit's stability in use has been promoted, has better spreading value.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (10)
1. An explosion-proof ultrasonic powder material level detection system comprises a large cyclone recovery device, wherein the large cyclone recovery device comprises a powder collecting cylinder, the top of the powder collecting cylinder is provided with an inlet, and the bottom of the powder collecting cylinder is communicated with a powder conveying pipe; the method is characterized in that: the ultrasonic wave crushing machine also comprises an ultrasonic detection component, a crushing component, an alarm component, a PLC control system and a time delay controller; the powder collecting cylinder is provided with a plurality of ultrasonic detection assemblies for detecting the height of dust at the bottom of the powder collecting cylinder and sending corresponding information to the PLC control system; the bottom end of the powder collecting cylinder is provided with a plurality of crushing assemblies for crushing the blocky powder at the bottom in the powder collecting cylinder; the alarm assembly is arranged outside the powder collecting cylinder; the PLC control system is connected with the large cyclone recovery device, the ultrasonic detection assembly, the crushing assembly and the alarm assembly, and a delay controller is further arranged between the PLC control system and the alarm assembly.
2. The powder explosion-proof ultrasonic material level detection system of claim 1, wherein: the ultrasonic detection components are arranged at the top of the powder collecting cylinder; the ultrasonic detection assembly consists of an ultrasonic sensor and a wave guide rod which are connected; ultrasonic sensor sets up the upper end at a collection powder section of thick bamboo, and the guided wave pole inserts in a collection powder section of thick bamboo, and rotatable the linking to each other between guided wave pole and the ultrasonic sensor.
3. The powder explosion-proof ultrasonic material level detection system of claim 2, wherein: the wave guide rod is of a telescopic structure.
4. The powder explosion-proof ultrasonic material level detection system of claim 2, wherein: a plurality of cleaning components are arranged on two sides of the inner wall of the powder collecting cylinder; the cleaning component comprises an electromagnetic valve obliquely arranged on the inner wall of the powder collecting cylinder, and the electromagnetic valve is connected with the PLC control system; the front end of the electromagnetic valve is provided with a spray head; the other end of the electromagnetic valve is communicated with an external air outlet device.
5. The powder explosion-proof ultrasonic material level detection system of claim 1, wherein: comprises at least two ultrasonic detection assemblies; the ultrasonic detection component is an ultrasonic sensor module, and an ultrasonic transmitting module and an ultrasonic receiving module are arranged in the ultrasonic sensor module; a plurality of symmetrical emission holes are respectively formed in two ends of the powder collecting cylinder; the powder collecting device is characterized in that a clamping piece is arranged on the outer portion of the transmitting hole, an ultrasonic detection assembly is clamped on the clamping piece, and the front end of the ultrasonic detection assembly penetrates through the bottom of the transmitting hole and points to the powder collecting barrel.
6. The powder explosion-proof ultrasonic material level detection system of claim 1, wherein: the crushing assembly comprises a small motor and a rotating rod; the small-sized motor is arranged at the bottom outside the powder collecting barrel, the rotating rods are connected with the rotating shaft of the small-sized motor, and the rotating rods are arranged at the bottom inside the powder collecting barrel.
7. The powder explosion-proof ultrasonic material level detection system of claim 1, wherein: the alarm assembly comprises an alarm and a flashing light; and the alarm and the flashing lamp are connected with the PLC control system.
8. The powder explosion-proof ultrasonic material level detection system according to claim 1, wherein; also includes a humidity sensor; a humidity sensor is embedded in the inner wall of the powder collecting cylinder; the humidity sensor is connected with the PLC control system and used for sensing the humidity in the powder collecting cylinder and displaying real-time data on a display screen on the PLC control system through the PLC control system.
9. The powder explosion-proof ultrasonic material level detection system of claim 1, wherein: and the powder collecting cylinder is also provided with a transparent observation window.
10. The powder explosion-proof ultrasonic material level detection system according to claim 1, wherein; the powder conveying pipe is in threaded connection with the powder collecting cylinder, a control valve is arranged on the powder conveying pipe, and the control valve is connected with the PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920816101.4U CN210071063U (en) | 2019-06-01 | 2019-06-01 | Powder explosion-proof ultrasonic material level detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920816101.4U CN210071063U (en) | 2019-06-01 | 2019-06-01 | Powder explosion-proof ultrasonic material level detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210071063U true CN210071063U (en) | 2020-02-14 |
Family
ID=69455863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920816101.4U Active CN210071063U (en) | 2019-06-01 | 2019-06-01 | Powder explosion-proof ultrasonic material level detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210071063U (en) |
-
2019
- 2019-06-01 CN CN201920816101.4U patent/CN210071063U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110879279A (en) | Air quality detection device for chemical plant | |
| CN112013927A (en) | Powder explosion-proof ultrasonic material level detection system | |
| CN210071063U (en) | Powder explosion-proof ultrasonic material level detection system | |
| CN113359529A (en) | Coal processing dust suppression system device based on big data and dust suppression method thereof | |
| CN208999393U (en) | A kind of gas detection case with remote alarming function | |
| CN202518476U (en) | Imaging detection and rejecting device for cigarettes in cigarette hopper | |
| CN114013956A (en) | Conveying belt anti-tearing device for conveyor | |
| CN203324247U (en) | Automatic monitoring system of radioactive aerosol | |
| CN112946198A (en) | System and device for monitoring sensing of people in building | |
| CN213398254U (en) | Test room and detect mirror with superfine position pipeline | |
| CN202028302U (en) | Monitoring device of primary air system filter screen of outdoor machine room | |
| CN209752774U (en) | Novel high-speed vortex slurrying system | |
| CN208365060U (en) | A kind of pipe explosion purging detection device | |
| CN108554801B (en) | Sieve plate falling monitoring device for medium removing sieve | |
| CN208334138U (en) | A kind of cleaning alarm set of urethane raw filter | |
| CN208205916U (en) | Glueballs quantity on-line monitoring and automatic tip-in device based on ultrasonic sensing technology | |
| CN209504626U (en) | Twin-screw extruder pelletizer comprehensive detection system | |
| CN211132826U (en) | Pressure measuring device for fire-fighting equipment detection | |
| CN208653885U (en) | A kind of air sampling warning device | |
| CN203133034U (en) | Device for controlling deposition during process of carrying out online ultrasonic detection on seamless steel tube | |
| CN219200920U (en) | Powder catching and sampling device for upper shell of steel slag vertical mill | |
| CN206990113U (en) | A kind of novel feeding pipeline spark detection device | |
| CN205643378U (en) | Cleaning tube velocity of medium detection device | |
| CN207601048U (en) | A kind of indusrial toxic harmful gas safety detection system | |
| CN209475793U (en) | A kind of dust removal and filtration element function detection device of the automatic feed back of energy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |