CN117250039B - Inside sewage pH valve of concrete mixer truck detects sampling device - Google Patents
Inside sewage pH valve of concrete mixer truck detects sampling device Download PDFInfo
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- CN117250039B CN117250039B CN202310902271.5A CN202310902271A CN117250039B CN 117250039 B CN117250039 B CN 117250039B CN 202310902271 A CN202310902271 A CN 202310902271A CN 117250039 B CN117250039 B CN 117250039B
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- 238000005070 sampling Methods 0.000 title claims abstract description 97
- 239000010865 sewage Substances 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims description 64
- 238000001514 detection method Methods 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 15
- 235000017491 Bambusa tulda Nutrition 0.000 description 15
- 241001330002 Bambuseae Species 0.000 description 15
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 15
- 239000011425 bamboo Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a device for detecting and sampling the pH value of sewage in a concrete mixer truck, which comprises a fixed disc, wherein the fixed disc is provided with a disc-shaped structure and a driving motor arranged on the fixed disc, one side of the fixed disc, which is close to the driving motor, is fixedly connected with a telescopic rod, one end of the telescopic rod is provided with a handheld rod, the sampling device is used for sampling the sewage in the mixer truck and comprises a sampling sleeve and a water inlet, the sewage is sampled through the water inlet on the sampling sleeve, the outer side of the driving motor is fixedly connected with the top of the fixed disc, and one end of the telescopic rod, which is far away from the fixed disc, is fixedly connected with the handheld rod. This inside sewage pH valve of concrete mixer truck detects sampling device can carry out multiunit simultaneous sampling to the sewage of same degree of depth, and accessible multiunit sample carries out the contrast and references for testing result is more accurate.
Description
Technical Field
The invention relates to the technical field of detection sampling, in particular to a device for detecting and sampling the pH value of sewage in a concrete mixer truck.
Background
The concrete stirring is an operation method for uniformly stirring cement, lime, water and other materials after mixing. Concrete mixing is divided into two types: manually stirring and mechanically stirring the water. The concrete mixing plant is widely applied to construction projects such as industries, agriculture, traffic, national defense, water conservancy and municipal administration in China, the demand is continuously increased, concrete is usually manufactured by using a concrete mixer, when the mixer enters the plant, the mixer needs to be cleaned, when the mixer is cleaned, the mixer is generally cleaned, the residues in the mixer are generally cleaned by a certain proportion of sewage and clear water, the cleaned sewage can be stored, the sewage is accumulated for a long time, the alkalinity of the sewage is increased, and finally, the mixer is cleaned again by mixing the sewage and clear water to reach a proper acid-base ratio. It is usually necessary to mix sewage with clear water by a certain alkalinity, detect the ph of the mixed liquid, and finally clean the stirring mechanism by using the mixed water.
The existing device cannot sample multiple groups of sewage at the same depth, cannot utilize multiple groups of samples for comparison and reference, cannot enable detection results to be more accurate, and cannot complete preliminary detection of the pH value of the sewage at the same time in the sampling process.
Disclosure of Invention
In order to solve the technical problems, the invention provides: the utility model provides a concrete mixer truck inside sewage pH valve detects sampling device, includes the fixed disk, and this fixed disk has disk structure, and the driving motor who sets up on the fixed disk, one side that the fixed disk is close to driving motor fixedly connected with telescopic link, the one end of telescopic link is provided with handheld pole;
Sampling device, this sampling device is used for taking a sample to the inside sewage of trucd mixer, sampling device includes sampling sleeve, water inlet, takes a sample to sewage through the water inlet on the sampling sleeve.
Preferably, the outside of driving motor and the top fixed connection of fixed disk, the one end and the handheld pole fixed connection of fixed disk are kept away from to the telescopic link, the handheld pole is rubber antiskid material.
Preferably, the water inlet is provided with a plurality of groups and is uniformly distributed on the sampling sleeve, and the sampling device is arranged right below the fixed disc.
Preferably, the sampling device still includes the detection section of thick bamboo, the outside fixedly connected with limit bracket of detection section of thick bamboo, one side fixedly connected with pH valve detector of limit bracket, the inboard bottom fixedly connected with dead lever of sampling sleeve, the outside fixedly connected with baffle of dead lever, sealing device is installed in the outside of dead lever, the inner wall of detection section of thick bamboo installs the closing plate, holds handheld pole and puts into the sewage that needs to detect with sampling device inside to through adjusting the telescopic link with sampling device subside to appointed degree of depth, after sampling device descends to appointed degree of depth, open driving motor and drive detection section of thick bamboo and sampling sleeve rotation, its inside sealing device receives centrifugal force effect to throw out from the water inlet when sampling sleeve is rotatory, and outside sewage gets into in the sampling sleeve from the water inlet, can accomplish the sample work, because water inlet and baffle all are provided with the multiunit, the space evenly separates into multiunit storage area with detecting section of thick bamboo and sampling sleeve inside, can carry out multiunit sample simultaneously, and accessible multiunit sample compares for the testing result is more accurate.
Preferably, the bottom of detecting the section of thick bamboo and sampling sleeve's top intercommunication, driving motor's output and the top fixed connection of detecting the section of thick bamboo, driving motor's output runs through the fixed disk and rotates with the fixed disk through the bearing and be connected.
Preferably, the detection head of pH valve detector runs through and extends to the inside of detecting the section of thick bamboo, opens pH valve detector and carries out timely preliminary detection to the sewage that gets into in the detection section of thick bamboo, can accomplish the preliminary detection of sewage pH valve simultaneously in the sample process to reduce sewage sample and detect the too big problem that leads to sample sewage light exposure time overlength of time difference, in time detect the problem that can reduce sample time and influence follow-up detected value accuracy for too long in advance to sewage, spacing support and baffle all are provided with the multiunit, spacing support and baffle staggered distribution.
Preferably, one side of the sealing plate far away from the inner wall of the detection cylinder is fixedly connected with the outer side of the fixing rod, the top of the fixing rod extends into the detection cylinder and is fixedly connected with the inner wall of the detection cylinder, and the bottom of the sealing plate is fixedly connected with the top of the partition plate.
Preferably, the sealing device comprises a reset spring, one end fixedly connected with sealing inclined block of reset spring, one side fixedly connected with joint strip that reset spring was kept away from to sealing inclined block, agitating unit is installed to one side that sealing inclined block was kept away from to the joint strip, open driving motor back, sealing inclined block receives centrifugal force effect and stretches out reset spring, sealing inclined block drives joint strip and rolls out from the water inlet, the water inlet no longer is plugged up by joint strip this moment, outside sewage can get into in the sampling sleeve from the gap between sealing inclined block and the water inlet, after the sample is accomplished, can finish driving motor, sealing inclined block receives centrifugal force and reduces, sealing inclined block draws back sealing inclined block to in the sampling sleeve and drives joint strip to plug up the water inlet owing to self resilience force, can seal the sample of taking out, also conveniently sample simultaneously, the simple operation.
Preferably, one end of the reset spring, which is far away from the sealing inclined block, is fixedly connected with the outer side of the fixing rod, the sealing device and the partition plate are distributed in a staggered mode, and one side, which is close to the sealing rubber strip, of the sealing inclined block penetrates through the water inlet and extends to the outer part of the sampling sleeve.
Preferably, the stirring device comprises a limit post, the outside of limit post is connected with rotatory cover through the bearing rotation, the both ends of limit post all pass through support and joint strip fixed connection, the arc mouth has been seted up in the outside of rotatory cover, the arc backup pad is installed in the outside of limit post, the arc mouth is run through to the arc backup pad, arc spring fixedly connected with arc stirring frame is passed through to one side of arc backup pad, the extension board is evenly installed to one side that arc stirring frame kept away from the arc backup pad, receives centrifugal force effect tensile return spring and slip along with sealed sloping block, and the arc stirring frame receives centrifugal force effect round limit post deflection, and arc spring is pulled out and is expanded around the limit post to the arc stirring frame that expands drives the extension board rotation, can mix the stirring to outside sewage, makes the sample composition in the entering sampling sleeve more even.
The invention provides a device for detecting and sampling the pH value of sewage in a concrete mixer truck. The device comprises the following
The beneficial effects are that:
1. This inside sewage pH valve of concrete mixer truck detects sampling device, through sampling device's installation, hold the handheld pole with sampling device and put into the sewage that needs to detect inside, and sink sampling device to appointed degree of depth through adjusting the telescopic link, after sampling device descends to appointed degree of depth, open driving motor and drive detection section of thick bamboo and sampling sleeve rotate, its inside sealing device is thrown away from the water inlet by centrifugal force effect when the sampling sleeve is rotatory, outside sewage gets into in the sampling sleeve from the water inlet, can accomplish the sample work, because water inlet and baffle all are provided with the multiunit, the baffle will detect the inside space of section of thick bamboo and sampling sleeve evenly separates into multiunit storage area, can carry out multiunit simultaneous sampling to the sewage of same degree of depth, the accessible multiunit sample carries out the contrast and consults, make the testing result more accurate.
2. This inside sewage pH valve of concrete mixer truck detects sampling device, through the setting of detecting section of thick bamboo and pH valve detector, open pH valve detector and in time detect in advance to getting into the sewage that detects in the section of thick bamboo, can accomplish the preliminary detection of sewage pH valve simultaneously in the sample process to reduce sewage sample and detect the too big problem that leads to sample sewage light exposure time overlength of time difference, in time detect in advance the sewage and can reduce the sample time and too long and influence the problem of follow-up detected value accuracy.
3. This inside sewage pH valve of concrete mixer truck detects sampling device, through sealing device's installation, after opening driving motor, sealed sloping block receives centrifugal force effect and stretches out reset spring, sealed sloping block drives joint strip and rolls out from the water inlet, the water inlet no longer is plugged up by joint strip this moment, outside sewage can be from sealed sloping block and the gap between the water inlet get into in the sample sleeve, after the sample is accomplished, can finish driving motor, sealed sloping block receives centrifugal force and reduces, reset spring is because self resilience force pulls back sealed sloping block to the sample sleeve in and drives joint strip and plug up the water inlet, can seal the sample of taking out and preserve, also convenient sample simultaneously, the simple operation.
4. This inside sewage pH valve of concrete mixer truck detects sampling device, through agitating unit's installation, along with sealed sloping block receives centrifugal force effect extension play reset spring and slides, and arc stirring frame receives centrifugal force effect round spacing post deflection, and arc stirring frame draws out arc spring and expandes around spacing post, and the arc stirring frame that expands drives the extension board rotation, can mix the stirring to outside sewage, makes the sample composition that gets into in the sampling sleeve more even.
Drawings
FIG. 1 is a schematic diagram of a device for detecting and sampling the pH value of sewage in a concrete mixer truck;
FIG. 2 is a schematic diagram of a sampling device according to the present invention;
FIG. 3 is a schematic view of the internal structure of the sampling sleeve according to the present invention;
FIG. 4 is a schematic view showing the internal structure of the cartridge according to the present invention;
FIG. 5 is a schematic view of the seal arrangement of the present invention;
FIG. 6 is a schematic view of the sealing bevel block of the present invention;
FIG. 7 is a schematic structural view of a stirring device according to the present invention;
fig. 8 is a schematic structural view of an arc stirring frame of the present invention.
In the figure: 1. a fixed plate; 2. a driving motor; 3. a telescopic rod; 4.a hand-held lever; 5. a sampling device; 51. a sampling sleeve; 52. a water inlet; 53. a detection cylinder; 54. a limit bracket; 55. a pH value detector; 56. a fixed rod; 57. a partition plate; 58. a sealing device; 581. a return spring; 582. sealing the inclined block; 583. a sealing rubber strip; 584. a stirring device; 5841. a limit column; 5842. a rotating sleeve; 5843. an arc-shaped opening; 5844. an arc-shaped supporting plate; 5845. an arc spring; 5846. an arc stirring frame; 5847. an extension plate; 59. and (5) sealing the plate.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a concrete mixer truck inside sewage pH valve detects sampling device, includes fixed disk 1, and this fixed disk 1 has disk structure to and set up driving motor 2 on fixed disk 1, one side that fixed disk 1 is close to driving motor 2 fixedly connected with telescopic link 3, and one end of telescopic link 3 is provided with handheld pole 4;
Sampling device 5, this sampling device 5 is used for taking a sample to the inside sewage of trucd mixer, and sampling device 5 includes sampling sleeve 51, water inlet 52, takes a sample to sewage through the water inlet 52 on the sampling sleeve 51.
The outside of driving motor 2 and the top fixed connection of fixed disk 1, the one end and the handheld pole 4 fixed connection of fixed disk 1 are kept away from to telescopic link 3, and handheld pole 4 is rubber antiskid material.
The water inlet 52 is provided with a plurality of groups which are uniformly distributed on the sampling sleeve 51, and the sampling device 5 is arranged under the fixed disc 1.
The sampling device 5 further comprises a detection barrel 53, a limit bracket 54 is fixedly connected to the outer side of the detection barrel 53, a PH value detector 55 is fixedly connected to one side of the limit bracket 54, a fixing rod 56 is fixedly connected to the bottom of the inner side of the sampling sleeve 51, a partition 57 is fixedly connected to the outer side of the fixing rod 56, a sealing device 58 is arranged on the outer side of the fixing rod 56, and a sealing plate 59 is arranged on the inner wall of the detection barrel 53.
The bottom of detecting section of thick bamboo 53 communicates with the top of sampling sleeve 51, and driving motor 2's output and the top fixed connection of detecting section of thick bamboo 53, driving motor 2's output runs through fixed disk 1 and rotates with fixed disk 1 through the bearing and be connected.
The detection head of the PH value detector 55 penetrates through and extends to the inside of the detection barrel 53, a plurality of groups of limiting brackets 54 and baffle plates 57 are arranged, and the limiting brackets 54 and the baffle plates 57 are distributed in a staggered mode.
One side of the sealing plate 59 far away from the inner wall of the detection barrel 53 is fixedly connected with the outer side of the fixing rod 56, the top of the fixing rod 56 extends into the detection barrel 53 and is fixedly connected with the inner wall of the detection barrel 53, and the bottom of the sealing plate 59 is fixedly connected with the top of the partition plate 57.
The sealing device 58 comprises a return spring 581, one end of the return spring 581 is fixedly connected with a sealing inclined block 582, one side of the sealing inclined block 582, which is far away from the return spring 581, is fixedly connected with a sealing rubber strip 583, and one side of the sealing rubber strip 583, which is far away from the sealing inclined block 582, is provided with a stirring device 584.
One end of the return spring 581, which is far away from the sealing inclined block 582, is fixedly connected with the outer side of the fixed rod 56, the sealing device 58 and the partition plate 57 are distributed in a staggered manner, and one side of the sealing inclined block 582, which is close to the sealing rubber strip 583, penetrates through the water inlet 52 and extends to the outside of the sampling sleeve 51.
When the device is used, the hand-held rod 4 is held by hand to put the sampling device 5 into the sewage to be detected, the sampling device 5 is sunk to the designated depth through the adjusting telescopic rod 3, after the sampling device 5 is lowered to the designated depth, the driving motor 2 is started to drive the detection cylinder 53 and the sampling sleeve 51 to rotate, the sealing device 58 in the sampling sleeve 51 is thrown out from the water inlet 52 under the action of centrifugal force when the sampling sleeve 51 rotates, external sewage enters the sampling sleeve 51 from the water inlet 52, the sampling work can be completed, and the water inlet 52 and the partition 57 are provided with a plurality of groups, the partition 57 uniformly separates the space inside the detection cylinder 53 and the sampling sleeve 51 into a plurality of groups of storage areas, so that the sewage with the same depth can be sampled simultaneously, and the plurality of groups of samples can be compared and referenced, so that the detection result is more accurate.
The pH value detector 55 is started to timely detect the sewage entering the detection barrel 53 in advance, so that the preliminary detection of the pH value of the sewage can be completed simultaneously in the sampling process, the problem that the sampling sewage light exposure time is overlong due to overlarge sewage sampling and detection time difference is solved, and the problem that the accuracy of a subsequent detection value is influenced due to the fact that the sampling time is overlong can be reduced by timely detecting the sewage in advance.
After the driving motor 2 is started, the sealing inclined block 582 stretches out the reset spring 581 under the action of centrifugal force, the sealing inclined block 582 drives the sealing rubber strip 583 to slide out of the water inlet 52, at the moment, the water inlet 52 is not blocked by the sealing rubber strip 583 any more, external sewage can enter the sampling sleeve 51 from a gap between the sealing inclined block 582 and the water inlet 52, after the sampling is completed, the driving motor 2 can be completed, the sealing inclined block 582 is reduced by the centrifugal force, and the reset spring 581 pulls back the sealing inclined block 582 into the sampling sleeve 51 due to self resilience force and drives the sealing rubber strip 583 to block the water inlet 52, so that the taken sample can be sealed and stored, meanwhile, the sampling is convenient, and the operation is convenient.
Referring to fig. 1-8, the present invention provides a technical solution: on the basis of the first embodiment, the stirring device 584 comprises a limit column 5841, the outer side of the limit column 5841 is rotationally connected with a rotary sleeve 5842 through a bearing, two ends of the limit column 5841 are fixedly connected with a sealing rubber strip 583 through a support, an arc-shaped opening 5843 is formed in the outer side of the rotary sleeve 5842, an arc-shaped supporting plate 5844 is mounted in the outer side of the limit column 5841, the arc-shaped supporting plate 5844 penetrates through the arc-shaped opening 5843, one side of the arc-shaped supporting plate 5844 is fixedly connected with an arc-shaped stirring frame 5846 through an arc-shaped spring 5845, and an extension plate 5847 is uniformly mounted on one side, far away from the arc-shaped supporting plate 5844, of the arc-shaped stirring frame 5846.
When the device is used, the reset spring 581 is pulled out and slides along with the action of centrifugal force of the sealing inclined block 582, the arc stirring frame 5846 is deflected around the limit column 5841 under the action of centrifugal force, the arc stirring frame 5846 pulls out the arc spring 5845 and expands around the limit column 5841, the expanded arc stirring frame 5846 drives the extension plate 5847 to rotate, and external sewage can be mixed and stirred, so that components of a sample entering the sampling sleeve 51 are more uniform.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (2)
1. The utility model provides a inside sewage pH valve of concrete mixer truck detects sampling device, includes fixed disk (1), its characterized in that:
The fixed disc (1) is provided with a disc-shaped structure and a driving motor (2) arranged on the fixed disc (1), one side, close to the driving motor (2), of the fixed disc (1) is fixedly connected with a telescopic rod (3), and one end of the telescopic rod (3) is provided with a handheld rod (4);
The sampling device (5) is used for sampling sewage in the mixer truck, the sampling device (5) comprises a sampling sleeve (51) and a water inlet (52), and the sewage is sampled through the water inlet (52) on the sampling sleeve (51);
the water inlets (52) are provided with a plurality of groups and are uniformly distributed on the sampling sleeve (51), and the sampling device (5) is arranged right below the fixed disc (1);
The sampling device (5) further comprises a detection cylinder (53), a limit bracket (54) is fixedly connected to the outer side of the detection cylinder (53), a PH value detector (55) is fixedly connected to one side of the limit bracket (54), a fixing rod (56) is fixedly connected to the bottom of the inner side of the sampling sleeve (51), a partition plate (57) is fixedly connected to the outer side of the fixing rod (56), a sealing device (58) is arranged on the outer side of the fixing rod (56), and a sealing plate (59) is arranged on the inner wall of the detection cylinder (53);
The bottom of the detection cylinder (53) is communicated with the top of the sampling sleeve (51), the output end of the driving motor (2) is fixedly connected with the top of the detection cylinder (53), and the output end of the driving motor (2) penetrates through the fixed disc (1) and is rotationally connected with the fixed disc (1) through a bearing;
The detection head of the pH value detector (55) penetrates through and extends to the inside of the detection cylinder (53), a plurality of groups of limiting brackets (54) and partition plates (57) are arranged, and the limiting brackets (54) and the partition plates (57) are distributed in a staggered mode;
one side of the sealing plate (59) far away from the inner wall of the detection cylinder (53) is fixedly connected with the outer side of the fixed rod (56), the top of the fixed rod (56) extends into the detection cylinder (53) and is fixedly connected with the inner wall of the detection cylinder (53), and the bottom of the sealing plate (59) is fixedly connected with the top of the partition plate (57);
The sealing device (58) comprises a return spring (581), one end of the return spring (581) is fixedly connected with a sealing inclined block (582), one side, far away from the return spring (581), of the sealing inclined block (582) is fixedly connected with a sealing rubber strip (583), and one side, far away from the sealing inclined block (582), of the sealing rubber strip (583) is provided with a stirring device (584);
one end of the return spring (581) far away from the sealing inclined block (582) is fixedly connected with the outer side of the fixed rod (56), the sealing device (58) and the partition plate (57) are distributed in a staggered mode, and one side, close to the sealing rubber strip (583), of the sealing inclined block (582) penetrates through the water inlet (52) and extends to the outer portion of the sampling sleeve (51).
2. The device for detecting and sampling the pH value of sewage in a concrete mixer truck according to claim 1, wherein the device is characterized in that: the outside of driving motor (2) and the top fixed connection of fixed disk (1), the one end and the handheld pole (4) fixed connection of fixed disk (1) are kept away from to telescopic link (3), handheld pole (4) are rubber antiskid material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310902271.5A CN117250039B (en) | 2023-07-21 | 2023-07-21 | Inside sewage pH valve of concrete mixer truck detects sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310902271.5A CN117250039B (en) | 2023-07-21 | 2023-07-21 | Inside sewage pH valve of concrete mixer truck detects sampling device |
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| CN117250039A CN117250039A (en) | 2023-12-19 |
| CN117250039B true CN117250039B (en) | 2024-05-14 |
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